1 /* POWER/PowerPC XCOFF linker support.
2 Copyright (C) 1995-2020 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
26 #include "coff/internal.h"
27 #include "coff/xcoff.h"
30 #include "libiberty.h"
31 #include "xcofflink.h"
33 /* This file holds the XCOFF linker code. */
35 #undef STRING_SIZE_SIZE
36 #define STRING_SIZE_SIZE 4
38 /* We reuse the SEC_ROM flag as a mark flag for garbage collection.
39 This flag will only be used on input sections. */
41 #define SEC_MARK (SEC_ROM)
43 /* The list of import files. */
45 struct xcoff_import_file
47 /* The next entry in the list. */
48 struct xcoff_import_file
*next
;
53 /* The member name. */
57 /* Information we keep for each section in the output file during the
60 struct xcoff_link_section_info
62 /* The relocs to be output. */
63 struct internal_reloc
*relocs
;
64 /* For each reloc against a global symbol whose index was not known
65 when the reloc was handled, the global hash table entry. */
66 struct xcoff_link_hash_entry
**rel_hashes
;
67 /* If there is a TOC relative reloc against a global symbol, and the
68 index of the TOC symbol is not known when the reloc was handled,
69 an entry is added to this linked list. This is not an array,
70 like rel_hashes, because this case is quite uncommon. */
71 struct xcoff_toc_rel_hash
73 struct xcoff_toc_rel_hash
*next
;
74 struct xcoff_link_hash_entry
*h
;
75 struct internal_reloc
*rel
;
79 /* Information that the XCOFF linker collects about an archive. */
80 struct xcoff_archive_info
82 /* The archive described by this entry. */
85 /* The import path and import filename to use when referring to
86 this archive in the .loader section. */
90 /* True if the archive contains a dynamic object. */
91 unsigned int contains_shared_object_p
: 1;
93 /* True if the previous field is valid. */
94 unsigned int know_contains_shared_object_p
: 1;
97 struct xcoff_link_hash_table
99 struct bfd_link_hash_table root
;
101 /* The .debug string hash table. We need to compute this while
102 reading the input files, so that we know how large the .debug
103 section will be before we assign section positions. */
104 struct bfd_strtab_hash
*debug_strtab
;
106 /* The .debug section we will use for the final output. */
107 asection
*debug_section
;
109 /* The .loader section we will use for the final output. */
110 asection
*loader_section
;
112 /* A count of non TOC relative relocs which will need to be
113 allocated in the .loader section. */
116 /* The .loader section header. */
117 struct internal_ldhdr ldhdr
;
119 /* The .gl section we use to hold global linkage code. */
120 asection
*linkage_section
;
122 /* The .tc section we use to hold toc entries we build for global
124 asection
*toc_section
;
126 /* The .ds section we use to hold function descriptors which we
127 create for exported symbols. */
128 asection
*descriptor_section
;
130 /* The list of import files. */
131 struct xcoff_import_file
*imports
;
133 /* Required alignment of sections within the output file. */
134 unsigned long file_align
;
136 /* Whether the .text section must be read-only. */
139 /* Whether -brtl was specified. */
142 /* Whether garbage collection was done. */
145 /* A linked list of symbols for which we have size information. */
146 struct xcoff_link_size_list
148 struct xcoff_link_size_list
*next
;
149 struct xcoff_link_hash_entry
*h
;
154 /* Information about archives. */
157 /* Magic sections: _text, _etext, _data, _edata, _end, end. */
158 asection
*special_sections
[XCOFF_NUMBER_OF_SPECIAL_SECTIONS
];
161 /* Information that we pass around while doing the final link step. */
163 struct xcoff_final_link_info
165 /* General link information. */
166 struct bfd_link_info
*info
;
169 /* Hash table for long symbol names. */
170 struct bfd_strtab_hash
*strtab
;
171 /* Array of information kept for each output section, indexed by the
172 target_index field. */
173 struct xcoff_link_section_info
*section_info
;
174 /* Symbol index of last C_FILE symbol (-1 if none). */
175 long last_file_index
;
176 /* Contents of last C_FILE symbol. */
177 struct internal_syment last_file
;
178 /* Symbol index of TOC symbol. */
180 /* Start of .loader symbols. */
182 /* Next .loader reloc to swap out. */
184 /* File position of start of line numbers. */
185 file_ptr line_filepos
;
186 /* Buffer large enough to hold swapped symbols of any input file. */
187 struct internal_syment
*internal_syms
;
188 /* Buffer large enough to hold output indices of symbols of any
191 /* Buffer large enough to hold output symbols for any input file. */
193 /* Buffer large enough to hold external line numbers for any input
196 /* Buffer large enough to hold any input section. */
198 /* Buffer large enough to hold external relocs of any input section. */
199 bfd_byte
*external_relocs
;
202 static bfd_boolean
xcoff_mark (struct bfd_link_info
*, asection
*);
206 /* Routines to read XCOFF dynamic information. This don't really
207 belong here, but we already have the ldsym manipulation routines
210 /* Read the contents of a section. */
213 xcoff_get_section_contents (bfd
*abfd
, asection
*sec
)
215 if (coff_section_data (abfd
, sec
) == NULL
)
217 size_t amt
= sizeof (struct coff_section_tdata
);
219 sec
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
220 if (sec
->used_by_bfd
== NULL
)
224 if (coff_section_data (abfd
, sec
)->contents
== NULL
)
228 if (! bfd_malloc_and_get_section (abfd
, sec
, &contents
))
233 coff_section_data (abfd
, sec
)->contents
= contents
;
239 /* Get the size required to hold the dynamic symbols. */
242 _bfd_xcoff_get_dynamic_symtab_upper_bound (bfd
*abfd
)
246 struct internal_ldhdr ldhdr
;
248 if ((abfd
->flags
& DYNAMIC
) == 0)
250 bfd_set_error (bfd_error_invalid_operation
);
254 lsec
= bfd_get_section_by_name (abfd
, ".loader");
257 bfd_set_error (bfd_error_no_symbols
);
261 if (! xcoff_get_section_contents (abfd
, lsec
))
263 contents
= coff_section_data (abfd
, lsec
)->contents
;
265 bfd_xcoff_swap_ldhdr_in (abfd
, (void *) contents
, &ldhdr
);
267 return (ldhdr
.l_nsyms
+ 1) * sizeof (asymbol
*);
270 /* Get the dynamic symbols. */
273 _bfd_xcoff_canonicalize_dynamic_symtab (bfd
*abfd
, asymbol
**psyms
)
277 struct internal_ldhdr ldhdr
;
279 bfd_byte
*elsym
, *elsymend
;
280 coff_symbol_type
*symbuf
;
282 if ((abfd
->flags
& DYNAMIC
) == 0)
284 bfd_set_error (bfd_error_invalid_operation
);
288 lsec
= bfd_get_section_by_name (abfd
, ".loader");
291 bfd_set_error (bfd_error_no_symbols
);
295 if (! xcoff_get_section_contents (abfd
, lsec
))
297 contents
= coff_section_data (abfd
, lsec
)->contents
;
299 coff_section_data (abfd
, lsec
)->keep_contents
= TRUE
;
301 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
303 strings
= (char *) contents
+ ldhdr
.l_stoff
;
305 symbuf
= bfd_zalloc (abfd
, ldhdr
.l_nsyms
* sizeof (* symbuf
));
309 elsym
= contents
+ bfd_xcoff_loader_symbol_offset(abfd
, &ldhdr
);
311 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz(abfd
);
312 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz(abfd
), symbuf
++, psyms
++)
314 struct internal_ldsym ldsym
;
316 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
318 symbuf
->symbol
.the_bfd
= abfd
;
320 if (ldsym
._l
._l_l
._l_zeroes
== 0)
321 symbuf
->symbol
.name
= strings
+ ldsym
._l
._l_l
._l_offset
;
326 c
= bfd_alloc (abfd
, (bfd_size_type
) SYMNMLEN
+ 1);
329 memcpy (c
, ldsym
._l
._l_name
, SYMNMLEN
);
331 symbuf
->symbol
.name
= c
;
334 if (ldsym
.l_smclas
== XMC_XO
)
335 symbuf
->symbol
.section
= bfd_abs_section_ptr
;
337 symbuf
->symbol
.section
= coff_section_from_bfd_index (abfd
,
339 symbuf
->symbol
.value
= ldsym
.l_value
- symbuf
->symbol
.section
->vma
;
341 symbuf
->symbol
.flags
= BSF_NO_FLAGS
;
342 if ((ldsym
.l_smtype
& L_EXPORT
) != 0)
344 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
345 symbuf
->symbol
.flags
|= BSF_WEAK
;
347 symbuf
->symbol
.flags
|= BSF_GLOBAL
;
350 /* FIXME: We have no way to record the other information stored
351 with the loader symbol. */
352 *psyms
= (asymbol
*) symbuf
;
357 return ldhdr
.l_nsyms
;
360 /* Get the size required to hold the dynamic relocs. */
363 _bfd_xcoff_get_dynamic_reloc_upper_bound (bfd
*abfd
)
367 struct internal_ldhdr ldhdr
;
369 if ((abfd
->flags
& DYNAMIC
) == 0)
371 bfd_set_error (bfd_error_invalid_operation
);
375 lsec
= bfd_get_section_by_name (abfd
, ".loader");
378 bfd_set_error (bfd_error_no_symbols
);
382 if (! xcoff_get_section_contents (abfd
, lsec
))
384 contents
= coff_section_data (abfd
, lsec
)->contents
;
386 bfd_xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) contents
, &ldhdr
);
388 return (ldhdr
.l_nreloc
+ 1) * sizeof (arelent
*);
391 /* Get the dynamic relocs. */
394 _bfd_xcoff_canonicalize_dynamic_reloc (bfd
*abfd
,
400 struct internal_ldhdr ldhdr
;
402 bfd_byte
*elrel
, *elrelend
;
404 if ((abfd
->flags
& DYNAMIC
) == 0)
406 bfd_set_error (bfd_error_invalid_operation
);
410 lsec
= bfd_get_section_by_name (abfd
, ".loader");
413 bfd_set_error (bfd_error_no_symbols
);
417 if (! xcoff_get_section_contents (abfd
, lsec
))
419 contents
= coff_section_data (abfd
, lsec
)->contents
;
421 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
423 relbuf
= bfd_alloc (abfd
, ldhdr
.l_nreloc
* sizeof (arelent
));
427 elrel
= contents
+ bfd_xcoff_loader_reloc_offset(abfd
, &ldhdr
);
429 elrelend
= elrel
+ ldhdr
.l_nreloc
* bfd_xcoff_ldrelsz(abfd
);
430 for (; elrel
< elrelend
; elrel
+= bfd_xcoff_ldrelsz(abfd
), relbuf
++,
433 struct internal_ldrel ldrel
;
435 bfd_xcoff_swap_ldrel_in (abfd
, elrel
, &ldrel
);
437 if (ldrel
.l_symndx
>= 3)
438 relbuf
->sym_ptr_ptr
= syms
+ (ldrel
.l_symndx
- 3);
444 switch (ldrel
.l_symndx
)
460 sec
= bfd_get_section_by_name (abfd
, name
);
463 bfd_set_error (bfd_error_bad_value
);
467 relbuf
->sym_ptr_ptr
= sec
->symbol_ptr_ptr
;
470 relbuf
->address
= ldrel
.l_vaddr
;
473 /* Most dynamic relocs have the same type. FIXME: This is only
474 correct if ldrel.l_rtype == 0. In other cases, we should use
475 a different howto. */
476 relbuf
->howto
= bfd_xcoff_dynamic_reloc_howto(abfd
);
478 /* FIXME: We have no way to record the l_rsecnm field. */
485 return ldhdr
.l_nreloc
;
488 /* Hash functions for xcoff_link_hash_table's archive_info. */
491 xcoff_archive_info_hash (const void *data
)
493 const struct xcoff_archive_info
*info
;
495 info
= (const struct xcoff_archive_info
*) data
;
496 return htab_hash_pointer (info
->archive
);
500 xcoff_archive_info_eq (const void *data1
, const void *data2
)
502 const struct xcoff_archive_info
*info1
;
503 const struct xcoff_archive_info
*info2
;
505 info1
= (const struct xcoff_archive_info
*) data1
;
506 info2
= (const struct xcoff_archive_info
*) data2
;
507 return info1
->archive
== info2
->archive
;
510 /* Return information about archive ARCHIVE. Return NULL on error. */
512 static struct xcoff_archive_info
*
513 xcoff_get_archive_info (struct bfd_link_info
*info
, bfd
*archive
)
515 struct xcoff_link_hash_table
*htab
;
516 struct xcoff_archive_info
*entryp
, entry
;
519 htab
= xcoff_hash_table (info
);
520 entry
.archive
= archive
;
521 slot
= htab_find_slot (htab
->archive_info
, &entry
, INSERT
);
528 entryp
= bfd_zalloc (archive
, sizeof (entry
));
532 entryp
->archive
= archive
;
538 /* Routine to create an entry in an XCOFF link hash table. */
540 static struct bfd_hash_entry
*
541 xcoff_link_hash_newfunc (struct bfd_hash_entry
*entry
,
542 struct bfd_hash_table
*table
,
545 struct xcoff_link_hash_entry
*ret
= (struct xcoff_link_hash_entry
*) entry
;
547 /* Allocate the structure if it has not already been allocated by a
550 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
554 /* Call the allocation method of the superclass. */
555 ret
= ((struct xcoff_link_hash_entry
*)
556 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
560 /* Set local fields. */
562 ret
->toc_section
= NULL
;
563 ret
->u
.toc_indx
= -1;
564 ret
->descriptor
= NULL
;
568 ret
->smclas
= XMC_UA
;
571 return (struct bfd_hash_entry
*) ret
;
574 /* Destroy an XCOFF link hash table. */
577 _bfd_xcoff_bfd_link_hash_table_free (bfd
*obfd
)
579 struct xcoff_link_hash_table
*ret
;
581 ret
= (struct xcoff_link_hash_table
*) obfd
->link
.hash
;
582 if (ret
->archive_info
)
583 htab_delete (ret
->archive_info
);
584 if (ret
->debug_strtab
)
585 _bfd_stringtab_free (ret
->debug_strtab
);
586 _bfd_generic_link_hash_table_free (obfd
);
589 /* Create an XCOFF link hash table. */
591 struct bfd_link_hash_table
*
592 _bfd_xcoff_bfd_link_hash_table_create (bfd
*abfd
)
594 struct xcoff_link_hash_table
*ret
;
595 size_t amt
= sizeof (* ret
);
597 ret
= bfd_zmalloc (amt
);
600 if (!_bfd_link_hash_table_init (&ret
->root
, abfd
, xcoff_link_hash_newfunc
,
601 sizeof (struct xcoff_link_hash_entry
)))
607 ret
->debug_strtab
= _bfd_xcoff_stringtab_init ();
608 ret
->archive_info
= htab_create (37, xcoff_archive_info_hash
,
609 xcoff_archive_info_eq
, NULL
);
610 if (!ret
->debug_strtab
|| !ret
->archive_info
)
612 _bfd_xcoff_bfd_link_hash_table_free (abfd
);
615 ret
->root
.hash_table_free
= _bfd_xcoff_bfd_link_hash_table_free
;
617 /* The linker will always generate a full a.out header. We need to
618 record that fact now, before the sizeof_headers routine could be
620 xcoff_data (abfd
)->full_aouthdr
= TRUE
;
625 /* Read internal relocs for an XCOFF csect. This is a wrapper around
626 _bfd_coff_read_internal_relocs which tries to take advantage of any
627 relocs which may have been cached for the enclosing section. */
629 static struct internal_reloc
*
630 xcoff_read_internal_relocs (bfd
*abfd
,
633 bfd_byte
*external_relocs
,
634 bfd_boolean require_internal
,
635 struct internal_reloc
*internal_relocs
)
637 if (coff_section_data (abfd
, sec
) != NULL
638 && coff_section_data (abfd
, sec
)->relocs
== NULL
639 && xcoff_section_data (abfd
, sec
) != NULL
)
643 enclosing
= xcoff_section_data (abfd
, sec
)->enclosing
;
645 if (enclosing
!= NULL
646 && (coff_section_data (abfd
, enclosing
) == NULL
647 || coff_section_data (abfd
, enclosing
)->relocs
== NULL
)
649 && enclosing
->reloc_count
> 0)
651 if (_bfd_coff_read_internal_relocs (abfd
, enclosing
, TRUE
,
652 external_relocs
, FALSE
, NULL
)
657 if (enclosing
!= NULL
658 && coff_section_data (abfd
, enclosing
) != NULL
659 && coff_section_data (abfd
, enclosing
)->relocs
!= NULL
)
663 off
= ((sec
->rel_filepos
- enclosing
->rel_filepos
)
664 / bfd_coff_relsz (abfd
));
666 if (! require_internal
)
667 return coff_section_data (abfd
, enclosing
)->relocs
+ off
;
668 memcpy (internal_relocs
,
669 coff_section_data (abfd
, enclosing
)->relocs
+ off
,
670 sec
->reloc_count
* sizeof (struct internal_reloc
));
671 return internal_relocs
;
675 return _bfd_coff_read_internal_relocs (abfd
, sec
, cache
, external_relocs
,
676 require_internal
, internal_relocs
);
679 /* Split FILENAME into an import path and an import filename,
680 storing them in *IMPPATH and *IMPFILE respectively. */
683 bfd_xcoff_split_import_path (bfd
*abfd
, const char *filename
,
684 const char **imppath
, const char **impfile
)
690 base
= lbasename (filename
);
691 length
= base
- filename
;
693 /* The filename has no directory component, so use an empty path. */
695 else if (length
== 1)
696 /* The filename is in the root directory. */
700 /* Extract the (non-empty) directory part. Note that we don't
701 need to strip duplicate directory separators from any part
702 of the string; the native linker doesn't do that either. */
703 path
= bfd_alloc (abfd
, length
);
706 memcpy (path
, filename
, length
- 1);
707 path
[length
- 1] = 0;
714 /* Set ARCHIVE's import path as though its filename had been given
718 bfd_xcoff_set_archive_import_path (struct bfd_link_info
*info
,
719 bfd
*archive
, const char *filename
)
721 struct xcoff_archive_info
*archive_info
;
723 archive_info
= xcoff_get_archive_info (info
, archive
);
724 return (archive_info
!= NULL
725 && bfd_xcoff_split_import_path (archive
, filename
,
726 &archive_info
->imppath
,
727 &archive_info
->impfile
));
730 /* H is an imported symbol. Set the import module's path, file and member
731 to IMPATH, IMPFILE and IMPMEMBER respectively. All three are null if
732 no specific import module is specified. */
735 xcoff_set_import_path (struct bfd_link_info
*info
,
736 struct xcoff_link_hash_entry
*h
,
737 const char *imppath
, const char *impfile
,
738 const char *impmember
)
741 struct xcoff_import_file
**pp
;
743 /* We overload the ldindx field to hold the l_ifile value for this
745 BFD_ASSERT (h
->ldsym
== NULL
);
746 BFD_ASSERT ((h
->flags
& XCOFF_BUILT_LDSYM
) == 0);
751 /* We start c at 1 because the first entry in the import list is
752 reserved for the library search path. */
753 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
755 pp
= &(*pp
)->next
, ++c
)
757 if (filename_cmp ((*pp
)->path
, imppath
) == 0
758 && filename_cmp ((*pp
)->file
, impfile
) == 0
759 && filename_cmp ((*pp
)->member
, impmember
) == 0)
765 struct xcoff_import_file
*n
;
766 size_t amt
= sizeof (*n
);
768 n
= bfd_alloc (info
->output_bfd
, amt
);
774 n
->member
= impmember
;
782 /* H is the bfd symbol associated with exported .loader symbol LDSYM.
783 Return true if LDSYM defines H. */
786 xcoff_dynamic_definition_p (struct xcoff_link_hash_entry
*h
,
787 struct internal_ldsym
*ldsym
)
789 /* If we didn't know about H before processing LDSYM, LDSYM
790 definitely defines H. */
791 if (h
->root
.type
== bfd_link_hash_new
)
794 /* If H is currently a weak dynamic symbol, and if LDSYM is a strong
795 dynamic symbol, LDSYM trumps the current definition of H. */
796 if ((ldsym
->l_smtype
& L_WEAK
) == 0
797 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0
798 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
799 && (h
->root
.type
== bfd_link_hash_defweak
800 || h
->root
.type
== bfd_link_hash_undefweak
))
803 /* If H is currently undefined, LDSYM defines it. */
804 if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0
805 && (h
->root
.type
== bfd_link_hash_undefined
806 || h
->root
.type
== bfd_link_hash_undefweak
))
812 /* This function is used to add symbols from a dynamic object to the
813 global symbol table. */
816 xcoff_link_add_dynamic_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
820 struct internal_ldhdr ldhdr
;
822 bfd_byte
*elsym
, *elsymend
;
823 struct xcoff_import_file
*n
;
825 struct xcoff_import_file
**pp
;
827 /* We can only handle a dynamic object if we are generating an XCOFF
829 if (info
->output_bfd
->xvec
!= abfd
->xvec
)
832 (_("%pB: XCOFF shared object when not producing XCOFF output"),
834 bfd_set_error (bfd_error_invalid_operation
);
838 /* The symbols we use from a dynamic object are not the symbols in
839 the normal symbol table, but, rather, the symbols in the export
840 table. If there is a global symbol in a dynamic object which is
841 not in the export table, the loader will not be able to find it,
842 so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
843 libc.a has symbols in the export table which are not in the
846 /* Read in the .loader section. FIXME: We should really use the
847 o_snloader field in the a.out header, rather than grabbing the
849 lsec
= bfd_get_section_by_name (abfd
, ".loader");
853 (_("%pB: dynamic object with no .loader section"),
855 bfd_set_error (bfd_error_no_symbols
);
859 if (! xcoff_get_section_contents (abfd
, lsec
))
861 contents
= coff_section_data (abfd
, lsec
)->contents
;
863 /* Remove the sections from this object, so that they do not get
864 included in the link. */
865 bfd_section_list_clear (abfd
);
867 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
869 strings
= (char *) contents
+ ldhdr
.l_stoff
;
871 elsym
= contents
+ bfd_xcoff_loader_symbol_offset(abfd
, &ldhdr
);
873 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz(abfd
);
875 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz(abfd
))
877 struct internal_ldsym ldsym
;
878 char nambuf
[SYMNMLEN
+ 1];
880 struct xcoff_link_hash_entry
*h
;
882 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
884 /* We are only interested in exported symbols. */
885 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
888 if (ldsym
._l
._l_l
._l_zeroes
== 0)
889 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
892 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
893 nambuf
[SYMNMLEN
] = '\0';
897 /* Normally we could not call xcoff_link_hash_lookup in an add
898 symbols routine, since we might not be using an XCOFF hash
899 table. However, we verified above that we are using an XCOFF
902 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
,
907 if (!xcoff_dynamic_definition_p (h
, &ldsym
))
910 h
->flags
|= XCOFF_DEF_DYNAMIC
;
911 h
->smclas
= ldsym
.l_smclas
;
912 if (h
->smclas
== XMC_XO
)
914 /* This symbol has an absolute value. */
915 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
916 h
->root
.type
= bfd_link_hash_defweak
;
918 h
->root
.type
= bfd_link_hash_defined
;
919 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
920 h
->root
.u
.def
.value
= ldsym
.l_value
;
924 /* Otherwise, we don't bother to actually define the symbol,
925 since we don't have a section to put it in anyhow.
926 We assume instead that an undefined XCOFF_DEF_DYNAMIC symbol
927 should be imported from the symbol's undef.abfd. */
928 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
929 h
->root
.type
= bfd_link_hash_undefweak
;
931 h
->root
.type
= bfd_link_hash_undefined
;
932 h
->root
.u
.undef
.abfd
= abfd
;
935 /* If this symbol defines a function descriptor, then it
936 implicitly defines the function code as well. */
937 if (h
->smclas
== XMC_DS
938 || (h
->smclas
== XMC_XO
&& name
[0] != '.'))
939 h
->flags
|= XCOFF_DESCRIPTOR
;
940 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
942 struct xcoff_link_hash_entry
*hds
;
949 dsnm
= bfd_malloc ((bfd_size_type
) strlen (name
) + 2);
953 strcpy (dsnm
+ 1, name
);
954 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
), dsnm
,
964 if (xcoff_dynamic_definition_p (hds
, &ldsym
))
966 hds
->root
.type
= h
->root
.type
;
967 hds
->flags
|= XCOFF_DEF_DYNAMIC
;
968 if (h
->smclas
== XMC_XO
)
970 /* An absolute symbol appears to actually define code, not a
971 function descriptor. This is how some math functions are
972 implemented on AIX 4.1. */
973 hds
->smclas
= XMC_XO
;
974 hds
->root
.u
.def
.section
= bfd_abs_section_ptr
;
975 hds
->root
.u
.def
.value
= ldsym
.l_value
;
979 hds
->smclas
= XMC_PR
;
980 hds
->root
.u
.undef
.abfd
= abfd
;
981 /* We do not want to add this to the undefined
988 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
990 free (coff_section_data (abfd
, lsec
)->contents
);
991 coff_section_data (abfd
, lsec
)->contents
= NULL
;
994 /* Record this file in the import files. */
995 n
= bfd_alloc (abfd
, (bfd_size_type
) sizeof (struct xcoff_import_file
));
1000 if (abfd
->my_archive
== NULL
|| bfd_is_thin_archive (abfd
->my_archive
))
1002 if (!bfd_xcoff_split_import_path (abfd
, bfd_get_filename (abfd
),
1003 &n
->path
, &n
->file
))
1009 struct xcoff_archive_info
*archive_info
;
1011 archive_info
= xcoff_get_archive_info (info
, abfd
->my_archive
);
1012 if (!archive_info
->impfile
)
1014 if (!bfd_xcoff_split_import_path (archive_info
->archive
,
1015 bfd_get_filename (archive_info
1017 &archive_info
->imppath
,
1018 &archive_info
->impfile
))
1021 n
->path
= archive_info
->imppath
;
1022 n
->file
= archive_info
->impfile
;
1023 n
->member
= bfd_get_filename (abfd
);
1026 /* We start c at 1 because the first import file number is reserved
1028 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
1030 pp
= &(*pp
)->next
, ++c
)
1034 xcoff_data (abfd
)->import_file_id
= c
;
1039 /* xcoff_link_create_extra_sections
1041 Takes care of creating the .loader, .gl, .ds, .debug and sections. */
1044 xcoff_link_create_extra_sections (bfd
* abfd
, struct bfd_link_info
*info
)
1046 bfd_boolean return_value
= FALSE
;
1048 if (info
->output_bfd
->xvec
== abfd
->xvec
)
1050 /* We need to build a .loader section, so we do it here. This
1051 won't work if we're producing an XCOFF output file with no
1052 XCOFF input files. FIXME. */
1054 if (!bfd_link_relocatable (info
)
1055 && xcoff_hash_table (info
)->loader_section
== NULL
)
1058 flagword flags
= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1060 lsec
= bfd_make_section_anyway_with_flags (abfd
, ".loader", flags
);
1064 xcoff_hash_table (info
)->loader_section
= lsec
;
1067 /* Likewise for the linkage section. */
1068 if (xcoff_hash_table (info
)->linkage_section
== NULL
)
1071 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1074 lsec
= bfd_make_section_anyway_with_flags (abfd
, ".gl", flags
);
1078 xcoff_hash_table (info
)->linkage_section
= lsec
;
1079 lsec
->alignment_power
= 2;
1082 /* Likewise for the TOC section. */
1083 if (xcoff_hash_table (info
)->toc_section
== NULL
)
1086 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1089 tsec
= bfd_make_section_anyway_with_flags (abfd
, ".tc", flags
);
1093 xcoff_hash_table (info
)->toc_section
= tsec
;
1094 tsec
->alignment_power
= 2;
1097 /* Likewise for the descriptor section. */
1098 if (xcoff_hash_table (info
)->descriptor_section
== NULL
)
1101 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1104 dsec
= bfd_make_section_anyway_with_flags (abfd
, ".ds", flags
);
1108 xcoff_hash_table (info
)->descriptor_section
= dsec
;
1109 dsec
->alignment_power
= 2;
1112 /* Likewise for the .debug section. */
1113 if (xcoff_hash_table (info
)->debug_section
== NULL
1114 && info
->strip
!= strip_all
)
1117 flagword flags
= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1119 dsec
= bfd_make_section_anyway_with_flags (abfd
, ".debug", flags
);
1123 xcoff_hash_table (info
)->debug_section
= dsec
;
1127 return_value
= TRUE
;
1131 return return_value
;
1134 /* Returns the index of reloc in RELOCS with the least address greater
1135 than or equal to ADDRESS. The relocs are sorted by address. */
1137 static bfd_size_type
1138 xcoff_find_reloc (struct internal_reloc
*relocs
,
1139 bfd_size_type count
,
1142 bfd_size_type min
, max
, this;
1146 if (count
== 1 && relocs
[0].r_vaddr
< address
)
1155 /* Do a binary search over (min,max]. */
1156 while (min
+ 1 < max
)
1160 this = (max
+ min
) / 2;
1161 raddr
= relocs
[this].r_vaddr
;
1162 if (raddr
> address
)
1164 else if (raddr
< address
)
1173 if (relocs
[min
].r_vaddr
< address
)
1177 && relocs
[min
- 1].r_vaddr
== address
)
1183 /* Add all the symbols from an object file to the hash table.
1185 XCOFF is a weird format. A normal XCOFF .o files will have three
1186 COFF sections--.text, .data, and .bss--but each COFF section will
1187 contain many csects. These csects are described in the symbol
1188 table. From the linker's point of view, each csect must be
1189 considered a section in its own right. For example, a TOC entry is
1190 handled as a small XMC_TC csect. The linker must be able to merge
1191 different TOC entries together, which means that it must be able to
1192 extract the XMC_TC csects from the .data section of the input .o
1195 From the point of view of our linker, this is, of course, a hideous
1196 nightmare. We cope by actually creating sections for each csect,
1197 and discarding the original sections. We then have to handle the
1198 relocation entries carefully, since the only way to tell which
1199 csect they belong to is to examine the address. */
1202 xcoff_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
1204 unsigned int n_tmask
;
1205 unsigned int n_btshft
;
1206 bfd_boolean default_copy
;
1207 bfd_size_type symcount
;
1208 struct xcoff_link_hash_entry
**sym_hash
;
1209 asection
**csect_cache
;
1210 unsigned int *lineno_counts
;
1211 bfd_size_type linesz
;
1213 asection
*last_real
;
1214 bfd_boolean keep_syms
;
1216 unsigned int csect_index
;
1217 asection
*first_csect
;
1218 bfd_size_type symesz
;
1221 struct reloc_info_struct
1223 struct internal_reloc
*relocs
;
1226 } *reloc_info
= NULL
;
1229 keep_syms
= obj_coff_keep_syms (abfd
);
1231 if ((abfd
->flags
& DYNAMIC
) != 0
1232 && ! info
->static_link
)
1234 if (! xcoff_link_add_dynamic_symbols (abfd
, info
))
1238 /* Create the loader, toc, gl, ds and debug sections, if needed. */
1239 if (! xcoff_link_create_extra_sections (abfd
, info
))
1242 if ((abfd
->flags
& DYNAMIC
) != 0
1243 && ! info
->static_link
)
1246 n_tmask
= coff_data (abfd
)->local_n_tmask
;
1247 n_btshft
= coff_data (abfd
)->local_n_btshft
;
1249 /* Define macros so that ISFCN, et. al., macros work correctly. */
1250 #define N_TMASK n_tmask
1251 #define N_BTSHFT n_btshft
1253 if (info
->keep_memory
)
1254 default_copy
= FALSE
;
1256 default_copy
= TRUE
;
1258 symcount
= obj_raw_syment_count (abfd
);
1260 /* We keep a list of the linker hash table entries that correspond
1261 to each external symbol. */
1262 amt
= symcount
* sizeof (struct xcoff_link_hash_entry
*);
1263 sym_hash
= bfd_zalloc (abfd
, amt
);
1264 if (sym_hash
== NULL
&& symcount
!= 0)
1266 coff_data (abfd
)->sym_hashes
= (struct coff_link_hash_entry
**) sym_hash
;
1268 /* Because of the weird stuff we are doing with XCOFF csects, we can
1269 not easily determine which section a symbol is in, so we store
1270 the information in the tdata for the input file. */
1271 amt
= symcount
* sizeof (asection
*);
1272 csect_cache
= bfd_zalloc (abfd
, amt
);
1273 if (csect_cache
== NULL
&& symcount
!= 0)
1275 xcoff_data (abfd
)->csects
= csect_cache
;
1277 /* We garbage-collect line-number information on a symbol-by-symbol
1278 basis, so we need to have quick access to the number of entries
1280 amt
= symcount
* sizeof (unsigned int);
1281 lineno_counts
= bfd_zalloc (abfd
, amt
);
1282 if (lineno_counts
== NULL
&& symcount
!= 0)
1284 xcoff_data (abfd
)->lineno_counts
= lineno_counts
;
1286 /* While splitting sections into csects, we need to assign the
1287 relocs correctly. The relocs and the csects must both be in
1288 order by VMA within a given section, so we handle this by
1289 scanning along the relocs as we process the csects. We index
1290 into reloc_info using the section target_index. */
1291 amt
= abfd
->section_count
+ 1;
1292 amt
*= sizeof (struct reloc_info_struct
);
1293 reloc_info
= bfd_zmalloc (amt
);
1294 if (reloc_info
== NULL
)
1297 /* Read in the relocs and line numbers for each section. */
1298 linesz
= bfd_coff_linesz (abfd
);
1300 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
1304 if ((o
->flags
& SEC_RELOC
) != 0)
1306 reloc_info
[o
->target_index
].relocs
=
1307 xcoff_read_internal_relocs (abfd
, o
, TRUE
, NULL
, FALSE
, NULL
);
1308 amt
= o
->reloc_count
;
1309 amt
*= sizeof (asection
*);
1310 reloc_info
[o
->target_index
].csects
= bfd_zmalloc (amt
);
1311 if (reloc_info
[o
->target_index
].csects
== NULL
)
1315 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1316 && o
->lineno_count
> 0)
1320 if (bfd_seek (abfd
, o
->line_filepos
, SEEK_SET
) != 0)
1322 if (_bfd_mul_overflow (linesz
, o
->lineno_count
, &amt
))
1324 bfd_set_error (bfd_error_file_too_big
);
1327 linenos
= _bfd_malloc_and_read (abfd
, amt
, amt
);
1328 if (linenos
== NULL
)
1330 reloc_info
[o
->target_index
].linenos
= linenos
;
1334 /* Don't let the linker relocation routines discard the symbols. */
1335 obj_coff_keep_syms (abfd
) = TRUE
;
1341 symesz
= bfd_coff_symesz (abfd
);
1342 BFD_ASSERT (symesz
== bfd_coff_auxesz (abfd
));
1343 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
1344 esym_end
= esym
+ symcount
* symesz
;
1346 while (esym
< esym_end
)
1348 struct internal_syment sym
;
1349 union internal_auxent aux
;
1351 char buf
[SYMNMLEN
+ 1];
1355 struct xcoff_link_hash_entry
*set_toc
;
1357 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
1359 /* In this pass we are only interested in symbols with csect
1361 if (!CSECT_SYM_P (sym
.n_sclass
))
1364 Normally csect is a .pr, .rw etc. created in the loop
1365 If C_FILE or first time, handle special
1367 Advance esym, sym_hash, csect_hash ptrs. */
1368 if (sym
.n_sclass
== C_FILE
|| sym
.n_sclass
== C_DWARF
)
1371 *csect_cache
= csect
;
1372 else if (first_csect
== NULL
1373 || sym
.n_sclass
== C_FILE
|| sym
.n_sclass
== C_DWARF
)
1374 *csect_cache
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1376 *csect_cache
= NULL
;
1377 esym
+= (sym
.n_numaux
+ 1) * symesz
;
1378 sym_hash
+= sym
.n_numaux
+ 1;
1379 csect_cache
+= sym
.n_numaux
+ 1;
1380 lineno_counts
+= sym
.n_numaux
+ 1;
1385 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
1390 /* If this symbol has line number information attached to it,
1391 and we're not stripping it, count the number of entries and
1392 add them to the count for this csect. In the final link pass
1393 we are going to attach line number information by symbol,
1394 rather than by section, in order to more easily handle
1395 garbage collection. */
1396 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1399 && ISFCN (sym
.n_type
))
1401 union internal_auxent auxlin
;
1403 bfd_coff_swap_aux_in (abfd
, (void *) (esym
+ symesz
),
1404 sym
.n_type
, sym
.n_sclass
,
1405 0, sym
.n_numaux
, (void *) &auxlin
);
1407 if (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
1409 asection
*enclosing
;
1410 bfd_signed_vma linoff
;
1412 enclosing
= xcoff_section_data (abfd
, csect
)->enclosing
;
1413 if (enclosing
== NULL
)
1416 /* xgettext:c-format */
1417 (_("%pB: `%s' has line numbers but no enclosing section"),
1419 bfd_set_error (bfd_error_bad_value
);
1422 linoff
= (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
1423 - enclosing
->line_filepos
);
1424 /* Explicit cast to bfd_signed_vma for compiler. */
1425 if (linoff
< (bfd_signed_vma
) (enclosing
->lineno_count
* linesz
))
1427 struct internal_lineno lin
;
1428 bfd_byte
*linpstart
;
1430 linpstart
= (reloc_info
[enclosing
->target_index
].linenos
1432 bfd_coff_swap_lineno_in (abfd
, (void *) linpstart
, (void *) &lin
);
1434 && ((bfd_size_type
) lin
.l_addr
.l_symndx
1436 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1439 bfd_byte
*linpend
, *linp
;
1441 linpend
= (reloc_info
[enclosing
->target_index
].linenos
1442 + enclosing
->lineno_count
* linesz
);
1443 for (linp
= linpstart
+ linesz
;
1447 bfd_coff_swap_lineno_in (abfd
, (void *) linp
,
1449 if (lin
.l_lnno
== 0)
1452 *lineno_counts
= (linp
- linpstart
) / linesz
;
1453 /* The setting of line_filepos will only be
1454 useful if all the line number entries for a
1455 csect are contiguous; this only matters for
1457 if (csect
->line_filepos
== 0)
1458 csect
->line_filepos
=
1459 auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
;
1465 /* Pick up the csect auxiliary information. */
1466 if (sym
.n_numaux
== 0)
1469 /* xgettext:c-format */
1470 (_("%pB: class %d symbol `%s' has no aux entries"),
1471 abfd
, sym
.n_sclass
, name
);
1472 bfd_set_error (bfd_error_bad_value
);
1476 bfd_coff_swap_aux_in (abfd
,
1477 (void *) (esym
+ symesz
* sym
.n_numaux
),
1478 sym
.n_type
, sym
.n_sclass
,
1479 sym
.n_numaux
- 1, sym
.n_numaux
,
1482 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
1492 /* xgettext:c-format */
1493 (_("%pB: symbol `%s' has unrecognized csect type %d"),
1495 bfd_set_error (bfd_error_bad_value
);
1499 /* This is an external reference. */
1500 if (sym
.n_sclass
== C_HIDEXT
1501 || sym
.n_scnum
!= N_UNDEF
1502 || aux
.x_csect
.x_scnlen
.l
!= 0)
1505 /* xgettext:c-format */
1506 (_("%pB: bad XTY_ER symbol `%s': class %d scnum %d "
1508 abfd
, name
, sym
.n_sclass
, sym
.n_scnum
,
1509 (int64_t) aux
.x_csect
.x_scnlen
.l
);
1510 bfd_set_error (bfd_error_bad_value
);
1514 /* An XMC_XO external reference is actually a reference to
1515 an absolute location. */
1516 if (aux
.x_csect
.x_smclas
!= XMC_XO
)
1517 section
= bfd_und_section_ptr
;
1520 section
= bfd_abs_section_ptr
;
1521 value
= sym
.n_value
;
1527 csect_index
= -(unsigned) 1;
1529 /* When we see a TOC anchor, we record the TOC value. */
1530 if (aux
.x_csect
.x_smclas
== XMC_TC0
)
1532 if (sym
.n_sclass
!= C_HIDEXT
1533 || aux
.x_csect
.x_scnlen
.l
!= 0)
1536 /* xgettext:c-format */
1537 (_("%pB: XMC_TC0 symbol `%s' is class %d scnlen %" PRId64
),
1538 abfd
, name
, sym
.n_sclass
, (int64_t) aux
.x_csect
.x_scnlen
.l
);
1539 bfd_set_error (bfd_error_bad_value
);
1542 xcoff_data (abfd
)->toc
= sym
.n_value
;
1545 /* We must merge TOC entries for the same symbol. We can
1546 merge two TOC entries if they are both C_HIDEXT, they
1547 both have the same name, they are both 4 or 8 bytes long, and
1548 they both have a relocation table entry for an external
1549 symbol with the same name. Unfortunately, this means
1550 that we must look through the relocations. Ick.
1552 Logic for 32 bit vs 64 bit.
1553 32 bit has a csect length of 4 for TOC
1554 64 bit has a csect length of 8 for TOC
1556 The conditions to get past the if-check are not that bad.
1557 They are what is used to create the TOC csects in the first
1559 if (aux
.x_csect
.x_smclas
== XMC_TC
1560 && sym
.n_sclass
== C_HIDEXT
1561 && info
->output_bfd
->xvec
== abfd
->xvec
1562 && ((bfd_xcoff_is_xcoff32 (abfd
)
1563 && aux
.x_csect
.x_scnlen
.l
== 4)
1564 || (bfd_xcoff_is_xcoff64 (abfd
)
1565 && aux
.x_csect
.x_scnlen
.l
== 8)))
1567 asection
*enclosing
;
1568 struct internal_reloc
*relocs
;
1569 bfd_size_type relindx
;
1570 struct internal_reloc
*rel
;
1572 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1573 if (enclosing
== NULL
)
1576 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1577 amt
= enclosing
->reloc_count
;
1578 relindx
= xcoff_find_reloc (relocs
, amt
, sym
.n_value
);
1579 rel
= relocs
+ relindx
;
1581 /* 32 bit R_POS r_size is 31
1582 64 bit R_POS r_size is 63 */
1583 if (relindx
< enclosing
->reloc_count
1584 && rel
->r_vaddr
== (bfd_vma
) sym
.n_value
1585 && rel
->r_type
== R_POS
1586 && ((bfd_xcoff_is_xcoff32 (abfd
)
1587 && rel
->r_size
== 31)
1588 || (bfd_xcoff_is_xcoff64 (abfd
)
1589 && rel
->r_size
== 63)))
1593 struct internal_syment relsym
;
1595 erelsym
= ((bfd_byte
*) obj_coff_external_syms (abfd
)
1596 + rel
->r_symndx
* symesz
);
1597 bfd_coff_swap_sym_in (abfd
, (void *) erelsym
, (void *) &relsym
);
1598 if (EXTERN_SYM_P (relsym
.n_sclass
))
1600 const char *relname
;
1601 char relbuf
[SYMNMLEN
+ 1];
1603 struct xcoff_link_hash_entry
*h
;
1605 /* At this point we know that the TOC entry is
1606 for an externally visible symbol. */
1607 relname
= _bfd_coff_internal_syment_name (abfd
, &relsym
,
1609 if (relname
== NULL
)
1612 /* We only merge TOC entries if the TC name is
1613 the same as the symbol name. This handles
1614 the normal case, but not common cases like
1615 SYM.P4 which gcc generates to store SYM + 4
1616 in the TOC. FIXME. */
1617 if (strcmp (name
, relname
) == 0)
1619 copy
= (! info
->keep_memory
1620 || relsym
._n
._n_n
._n_zeroes
!= 0
1621 || relsym
._n
._n_n
._n_offset
== 0);
1622 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1623 relname
, TRUE
, copy
,
1628 /* At this point h->root.type could be
1629 bfd_link_hash_new. That should be OK,
1630 since we know for sure that we will come
1631 across this symbol as we step through the
1634 /* We store h in *sym_hash for the
1635 convenience of the relocate_section
1639 if (h
->toc_section
!= NULL
)
1641 asection
**rel_csects
;
1643 /* We already have a TOC entry for this
1644 symbol, so we can just ignore this
1647 reloc_info
[enclosing
->target_index
].csects
;
1648 rel_csects
[relindx
] = bfd_und_section_ptr
;
1652 /* We are about to create a TOC entry for
1661 asection
*enclosing
;
1663 /* We need to create a new section. We get the name from
1664 the csect storage mapping class, so that the linker can
1665 accumulate similar csects together. */
1667 csect
= bfd_xcoff_create_csect_from_smclas(abfd
, &aux
, name
);
1671 /* The enclosing section is the main section : .data, .text
1672 or .bss that the csect is coming from. */
1673 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1674 if (enclosing
== NULL
)
1677 if (! bfd_is_abs_section (enclosing
)
1678 && ((bfd_vma
) sym
.n_value
< enclosing
->vma
1679 || ((bfd_vma
) sym
.n_value
+ aux
.x_csect
.x_scnlen
.l
1680 > enclosing
->vma
+ enclosing
->size
)))
1683 /* xgettext:c-format */
1684 (_("%pB: csect `%s' not in enclosing section"),
1686 bfd_set_error (bfd_error_bad_value
);
1689 csect
->vma
= sym
.n_value
;
1690 csect
->filepos
= (enclosing
->filepos
1693 csect
->size
= aux
.x_csect
.x_scnlen
.l
;
1694 csect
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
1695 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1697 /* Record the enclosing section in the tdata for this new
1699 amt
= sizeof (struct coff_section_tdata
);
1700 csect
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1701 if (csect
->used_by_bfd
== NULL
)
1703 amt
= sizeof (struct xcoff_section_tdata
);
1704 coff_section_data (abfd
, csect
)->tdata
= bfd_zalloc (abfd
, amt
);
1705 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1707 xcoff_section_data (abfd
, csect
)->enclosing
= enclosing
;
1708 xcoff_section_data (abfd
, csect
)->lineno_count
=
1709 enclosing
->lineno_count
;
1711 if (enclosing
->owner
== abfd
)
1713 struct internal_reloc
*relocs
;
1714 bfd_size_type relindx
;
1715 struct internal_reloc
*rel
;
1716 asection
**rel_csect
;
1718 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1719 amt
= enclosing
->reloc_count
;
1720 relindx
= xcoff_find_reloc (relocs
, amt
, csect
->vma
);
1722 rel
= relocs
+ relindx
;
1723 rel_csect
= (reloc_info
[enclosing
->target_index
].csects
1726 csect
->rel_filepos
= (enclosing
->rel_filepos
1727 + relindx
* bfd_coff_relsz (abfd
));
1728 while (relindx
< enclosing
->reloc_count
1729 && *rel_csect
== NULL
1730 && rel
->r_vaddr
< csect
->vma
+ csect
->size
)
1734 csect
->flags
|= SEC_RELOC
;
1735 ++csect
->reloc_count
;
1742 /* There are a number of other fields and section flags
1743 which we do not bother to set. */
1745 csect_index
= ((esym
1746 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1749 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1751 if (first_csect
== NULL
)
1752 first_csect
= csect
;
1754 /* If this symbol is external, we treat it as starting at the
1755 beginning of the newly created section. */
1756 if (EXTERN_SYM_P (sym
.n_sclass
))
1762 /* If this is a TOC section for a symbol, record it. */
1763 if (set_toc
!= NULL
)
1764 set_toc
->toc_section
= csect
;
1769 /* This is a label definition. The x_scnlen field is the
1770 symbol index of the csect. Usually the XTY_LD symbol will
1771 follow its appropriate XTY_SD symbol. The .set pseudo op can
1772 cause the XTY_LD to not follow the XTY_SD symbol. */
1777 if (aux
.x_csect
.x_scnlen
.l
< 0
1778 || (aux
.x_csect
.x_scnlen
.l
1779 >= esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)))
1783 section
= xcoff_data (abfd
)->csects
[aux
.x_csect
.x_scnlen
.l
];
1785 || (section
->flags
& SEC_HAS_CONTENTS
) == 0)
1791 /* xgettext:c-format */
1792 (_("%pB: misplaced XTY_LD `%s'"),
1794 bfd_set_error (bfd_error_bad_value
);
1798 value
= sym
.n_value
- csect
->vma
;
1803 /* This is an unitialized csect. We could base the name on
1804 the storage mapping class, but we don't bother except for
1805 an XMC_TD symbol. If this csect is externally visible,
1806 it is a common symbol. We put XMC_TD symbols in sections
1807 named .tocbss, and rely on the linker script to put that
1810 if (aux
.x_csect
.x_smclas
== XMC_TD
)
1812 /* The linker script puts the .td section in the data
1813 section after the .tc section. */
1814 csect
= bfd_make_section_anyway_with_flags (abfd
, ".td",
1818 csect
= bfd_make_section_anyway_with_flags (abfd
, ".bss",
1823 csect
->vma
= sym
.n_value
;
1824 csect
->size
= aux
.x_csect
.x_scnlen
.l
;
1825 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1826 /* There are a number of other fields and section flags
1827 which we do not bother to set. */
1829 csect_index
= ((esym
1830 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1833 amt
= sizeof (struct coff_section_tdata
);
1834 csect
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1835 if (csect
->used_by_bfd
== NULL
)
1837 amt
= sizeof (struct xcoff_section_tdata
);
1838 coff_section_data (abfd
, csect
)->tdata
= bfd_zalloc (abfd
, amt
);
1839 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1841 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1843 if (first_csect
== NULL
)
1844 first_csect
= csect
;
1846 if (EXTERN_SYM_P (sym
.n_sclass
))
1848 csect
->flags
|= SEC_IS_COMMON
;
1851 value
= aux
.x_csect
.x_scnlen
.l
;
1857 /* Check for magic symbol names. */
1858 if ((smtyp
== XTY_SD
|| smtyp
== XTY_CM
)
1859 && aux
.x_csect
.x_smclas
!= XMC_TC
1860 && aux
.x_csect
.x_smclas
!= XMC_TD
)
1866 if (strcmp (name
, "_text") == 0)
1867 i
= XCOFF_SPECIAL_SECTION_TEXT
;
1868 else if (strcmp (name
, "_etext") == 0)
1869 i
= XCOFF_SPECIAL_SECTION_ETEXT
;
1870 else if (strcmp (name
, "_data") == 0)
1871 i
= XCOFF_SPECIAL_SECTION_DATA
;
1872 else if (strcmp (name
, "_edata") == 0)
1873 i
= XCOFF_SPECIAL_SECTION_EDATA
;
1874 else if (strcmp (name
, "_end") == 0)
1875 i
= XCOFF_SPECIAL_SECTION_END
;
1877 else if (name
[0] == 'e' && strcmp (name
, "end") == 0)
1878 i
= XCOFF_SPECIAL_SECTION_END2
;
1881 xcoff_hash_table (info
)->special_sections
[i
] = csect
;
1884 /* Now we have enough information to add the symbol to the
1885 linker hash table. */
1887 if (EXTERN_SYM_P (sym
.n_sclass
))
1889 bfd_boolean copy
, ok
;
1892 BFD_ASSERT (section
!= NULL
);
1894 /* We must copy the name into memory if we got it from the
1895 syment itself, rather than the string table. */
1896 copy
= default_copy
;
1897 if (sym
._n
._n_n
._n_zeroes
!= 0
1898 || sym
._n
._n_n
._n_offset
== 0)
1901 /* Ignore global linkage code when linking statically. */
1902 if (info
->static_link
1903 && (smtyp
== XTY_SD
|| smtyp
== XTY_LD
)
1904 && aux
.x_csect
.x_smclas
== XMC_GL
)
1906 section
= bfd_und_section_ptr
;
1910 /* The AIX linker appears to only detect multiple symbol
1911 definitions when there is a reference to the symbol. If
1912 a symbol is defined multiple times, and the only
1913 references are from the same object file, the AIX linker
1914 appears to permit it. It does not merge the different
1915 definitions, but handles them independently. On the
1916 other hand, if there is a reference, the linker reports
1919 This matters because the AIX <net/net_globals.h> header
1920 file actually defines an initialized array, so we have to
1921 actually permit that to work.
1923 Just to make matters even more confusing, the AIX linker
1924 appears to permit multiple symbol definitions whenever
1925 the second definition is in an archive rather than an
1926 object file. This may be a consequence of the manner in
1927 which it handles archives: I think it may load the entire
1928 archive in as separate csects, and then let garbage
1929 collection discard symbols.
1931 We also have to handle the case of statically linking a
1932 shared object, which will cause symbol redefinitions,
1933 although this is an easier case to detect. */
1934 else if (info
->output_bfd
->xvec
== abfd
->xvec
)
1936 if (! bfd_is_und_section (section
))
1937 *sym_hash
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1938 name
, TRUE
, copy
, FALSE
);
1940 /* Make a copy of the symbol name to prevent problems with
1942 *sym_hash
= ((struct xcoff_link_hash_entry
*)
1943 bfd_wrapped_link_hash_lookup (abfd
, info
, name
,
1944 TRUE
, TRUE
, FALSE
));
1946 if (*sym_hash
== NULL
)
1948 if (((*sym_hash
)->root
.type
== bfd_link_hash_defined
1949 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
1950 && ! bfd_is_und_section (section
)
1951 && ! bfd_is_com_section (section
))
1953 /* This is a second definition of a defined symbol. */
1954 if (((*sym_hash
)->flags
& XCOFF_DEF_REGULAR
) == 0
1955 && ((*sym_hash
)->flags
& XCOFF_DEF_DYNAMIC
) != 0)
1957 /* The existing symbol is from a shared library.
1959 (*sym_hash
)->root
.type
= bfd_link_hash_undefined
;
1960 (*sym_hash
)->root
.u
.undef
.abfd
=
1961 (*sym_hash
)->root
.u
.def
.section
->owner
;
1963 else if (abfd
->my_archive
!= NULL
)
1965 /* This is a redefinition in an object contained
1966 in an archive. Just ignore it. See the
1968 section
= bfd_und_section_ptr
;
1971 else if (sym
.n_sclass
== C_AIX_WEAKEXT
1972 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
1974 /* At least one of the definitions is weak.
1975 Allow the normal rules to take effect. */
1977 else if ((*sym_hash
)->root
.u
.undef
.next
!= NULL
1978 || info
->hash
->undefs_tail
== &(*sym_hash
)->root
)
1980 /* This symbol has been referenced. In this
1981 case, we just continue and permit the
1982 multiple definition error. See the comment
1983 above about the behaviour of the AIX linker. */
1985 else if ((*sym_hash
)->smclas
== aux
.x_csect
.x_smclas
)
1987 /* The symbols are both csects of the same
1988 class. There is at least a chance that this
1989 is a semi-legitimate redefinition. */
1990 section
= bfd_und_section_ptr
;
1992 (*sym_hash
)->flags
|= XCOFF_MULTIPLY_DEFINED
;
1995 else if (((*sym_hash
)->flags
& XCOFF_MULTIPLY_DEFINED
) != 0
1996 && (*sym_hash
)->root
.type
== bfd_link_hash_defined
1997 && (bfd_is_und_section (section
)
1998 || bfd_is_com_section (section
)))
2000 /* This is a reference to a multiply defined symbol.
2001 Report the error now. See the comment above
2002 about the behaviour of the AIX linker. We could
2003 also do this with warning symbols, but I'm not
2004 sure the XCOFF linker is wholly prepared to
2005 handle them, and that would only be a warning,
2007 (*info
->callbacks
->multiple_definition
) (info
,
2011 /* Try not to give this error too many times. */
2012 (*sym_hash
)->flags
&= ~XCOFF_MULTIPLY_DEFINED
;
2016 /* _bfd_generic_link_add_one_symbol may call the linker to
2017 generate an error message, and the linker may try to read
2018 the symbol table to give a good error. Right now, the
2019 line numbers are in an inconsistent state, since they are
2020 counted both in the real sections and in the new csects.
2021 We need to leave the count in the real sections so that
2022 the linker can report the line number of the error
2023 correctly, so temporarily clobber the link to the csects
2024 so that the linker will not try to read the line numbers
2025 a second time from the csects. */
2026 BFD_ASSERT (last_real
->next
== first_csect
);
2027 last_real
->next
= NULL
;
2028 flags
= (sym
.n_sclass
== C_EXT
? BSF_GLOBAL
: BSF_WEAK
);
2029 ok
= (_bfd_generic_link_add_one_symbol
2030 (info
, abfd
, name
, flags
, section
, value
, NULL
, copy
, TRUE
,
2031 (struct bfd_link_hash_entry
**) sym_hash
));
2032 last_real
->next
= first_csect
;
2036 if (smtyp
== XTY_CM
)
2038 if ((*sym_hash
)->root
.type
!= bfd_link_hash_common
2039 || (*sym_hash
)->root
.u
.c
.p
->section
!= csect
)
2040 /* We don't need the common csect we just created. */
2043 (*sym_hash
)->root
.u
.c
.p
->alignment_power
2044 = csect
->alignment_power
;
2047 if (info
->output_bfd
->xvec
== abfd
->xvec
)
2053 || section
== bfd_und_section_ptr
)
2054 flag
= XCOFF_REF_REGULAR
;
2056 flag
= XCOFF_DEF_REGULAR
;
2057 (*sym_hash
)->flags
|= flag
;
2059 if ((*sym_hash
)->smclas
== XMC_UA
2060 || flag
== XCOFF_DEF_REGULAR
)
2061 (*sym_hash
)->smclas
= aux
.x_csect
.x_smclas
;
2065 if (smtyp
== XTY_ER
)
2066 *csect_cache
= section
;
2069 *csect_cache
= csect
;
2071 xcoff_section_data (abfd
, csect
)->last_symndx
2072 = (esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)) / symesz
;
2075 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2076 sym_hash
+= sym
.n_numaux
+ 1;
2077 csect_cache
+= sym
.n_numaux
+ 1;
2078 lineno_counts
+= sym
.n_numaux
+ 1;
2081 BFD_ASSERT (last_real
== NULL
|| last_real
->next
== first_csect
);
2083 /* Make sure that we have seen all the relocs. */
2084 for (o
= abfd
->sections
; o
!= first_csect
; o
= o
->next
)
2086 /* Debugging sections have no csects. */
2087 if (bfd_section_flags (o
) & SEC_DEBUGGING
)
2090 /* Reset the section size and the line number count, since the
2091 data is now attached to the csects. Don't reset the size of
2092 the .debug section, since we need to read it below in
2093 bfd_xcoff_size_dynamic_sections. */
2094 if (strcmp (bfd_section_name (o
), ".debug") != 0)
2096 o
->lineno_count
= 0;
2098 if ((o
->flags
& SEC_RELOC
) != 0)
2101 struct internal_reloc
*rel
;
2102 asection
**rel_csect
;
2104 rel
= reloc_info
[o
->target_index
].relocs
;
2105 rel_csect
= reloc_info
[o
->target_index
].csects
;
2107 for (i
= 0; i
< o
->reloc_count
; i
++, rel
++, rel_csect
++)
2109 if (*rel_csect
== NULL
)
2112 /* xgettext:c-format */
2113 (_("%pB: reloc %s:%" PRId64
" not in csect"),
2114 abfd
, o
->name
, (int64_t) i
);
2115 bfd_set_error (bfd_error_bad_value
);
2119 /* We identify all function symbols that are the target
2120 of a relocation, so that we can create glue code for
2121 functions imported from dynamic objects. */
2122 if (info
->output_bfd
->xvec
== abfd
->xvec
2123 && *rel_csect
!= bfd_und_section_ptr
2124 && obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
] != NULL
)
2126 struct xcoff_link_hash_entry
*h
;
2128 h
= obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
];
2129 /* If the symbol name starts with a period, it is
2130 the code of a function. If the symbol is
2131 currently undefined, then add an undefined symbol
2132 for the function descriptor. This should do no
2133 harm, because any regular object that defines the
2134 function should also define the function
2135 descriptor. It helps, because it means that we
2136 will identify the function descriptor with a
2137 dynamic object if a dynamic object defines it. */
2138 if (h
->root
.root
.string
[0] == '.'
2139 && h
->descriptor
== NULL
)
2141 struct xcoff_link_hash_entry
*hds
;
2142 struct bfd_link_hash_entry
*bh
;
2144 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2145 h
->root
.root
.string
+ 1,
2149 if (hds
->root
.type
== bfd_link_hash_new
)
2152 if (! (_bfd_generic_link_add_one_symbol
2153 (info
, abfd
, hds
->root
.root
.string
,
2154 (flagword
) 0, bfd_und_section_ptr
,
2155 (bfd_vma
) 0, NULL
, FALSE
,
2158 hds
= (struct xcoff_link_hash_entry
*) bh
;
2160 hds
->flags
|= XCOFF_DESCRIPTOR
;
2161 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
2162 hds
->descriptor
= h
;
2163 h
->descriptor
= hds
;
2165 if (h
->root
.root
.string
[0] == '.')
2166 h
->flags
|= XCOFF_CALLED
;
2170 free (reloc_info
[o
->target_index
].csects
);
2171 reloc_info
[o
->target_index
].csects
= NULL
;
2173 /* Reset SEC_RELOC and the reloc_count, since the reloc
2174 information is now attached to the csects. */
2175 o
->flags
&=~ SEC_RELOC
;
2178 /* If we are not keeping memory, free the reloc information. */
2179 if (! info
->keep_memory
2180 && coff_section_data (abfd
, o
) != NULL
2181 && ! coff_section_data (abfd
, o
)->keep_relocs
)
2183 free (coff_section_data (abfd
, o
)->relocs
);
2184 coff_section_data (abfd
, o
)->relocs
= NULL
;
2188 /* Free up the line numbers. FIXME: We could cache these
2189 somewhere for the final link, to avoid reading them again. */
2190 free (reloc_info
[o
->target_index
].linenos
);
2191 reloc_info
[o
->target_index
].linenos
= NULL
;
2196 obj_coff_keep_syms (abfd
) = keep_syms
;
2201 if (reloc_info
!= NULL
)
2203 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2205 free (reloc_info
[o
->target_index
].csects
);
2206 free (reloc_info
[o
->target_index
].linenos
);
2210 obj_coff_keep_syms (abfd
) = keep_syms
;
2217 /* Add symbols from an XCOFF object file. */
2220 xcoff_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2222 if (! _bfd_coff_get_external_symbols (abfd
))
2224 if (! xcoff_link_add_symbols (abfd
, info
))
2226 if (! info
->keep_memory
)
2228 if (! _bfd_coff_free_symbols (abfd
))
2234 /* Look through the loader symbols to see if this dynamic object
2235 should be included in the link. The native linker uses the loader
2236 symbols, not the normal symbol table, so we do too. */
2239 xcoff_link_check_dynamic_ar_symbols (bfd
*abfd
,
2240 struct bfd_link_info
*info
,
2241 bfd_boolean
*pneeded
,
2246 struct internal_ldhdr ldhdr
;
2247 const char *strings
;
2248 bfd_byte
*elsym
, *elsymend
;
2252 lsec
= bfd_get_section_by_name (abfd
, ".loader");
2254 /* There are no symbols, so don't try to include it. */
2257 if (! xcoff_get_section_contents (abfd
, lsec
))
2259 contents
= coff_section_data (abfd
, lsec
)->contents
;
2261 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
2263 strings
= (char *) contents
+ ldhdr
.l_stoff
;
2265 elsym
= contents
+ bfd_xcoff_loader_symbol_offset (abfd
, &ldhdr
);
2267 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz (abfd
);
2268 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz (abfd
))
2270 struct internal_ldsym ldsym
;
2271 char nambuf
[SYMNMLEN
+ 1];
2273 struct bfd_link_hash_entry
*h
;
2275 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
2277 /* We are only interested in exported symbols. */
2278 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
2281 if (ldsym
._l
._l_l
._l_zeroes
== 0)
2282 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
2285 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
2286 nambuf
[SYMNMLEN
] = '\0';
2290 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2292 /* We are only interested in symbols that are currently
2293 undefined. At this point we know that we are using an XCOFF
2296 && h
->type
== bfd_link_hash_undefined
2297 && (((struct xcoff_link_hash_entry
*) h
)->flags
2298 & XCOFF_DEF_DYNAMIC
) == 0)
2300 if (!(*info
->callbacks
2301 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2308 /* We do not need this shared object. */
2309 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
2311 free (coff_section_data (abfd
, lsec
)->contents
);
2312 coff_section_data (abfd
, lsec
)->contents
= NULL
;
2318 /* Look through the symbols to see if this object file should be
2319 included in the link. */
2322 xcoff_link_check_ar_symbols (bfd
*abfd
,
2323 struct bfd_link_info
*info
,
2324 bfd_boolean
*pneeded
,
2327 bfd_size_type symesz
;
2333 if ((abfd
->flags
& DYNAMIC
) != 0
2334 && ! info
->static_link
2335 && info
->output_bfd
->xvec
== abfd
->xvec
)
2336 return xcoff_link_check_dynamic_ar_symbols (abfd
, info
, pneeded
, subsbfd
);
2338 symesz
= bfd_coff_symesz (abfd
);
2339 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
2340 esym_end
= esym
+ obj_raw_syment_count (abfd
) * symesz
;
2341 while (esym
< esym_end
)
2343 struct internal_syment sym
;
2345 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
2347 if (EXTERN_SYM_P (sym
.n_sclass
) && sym
.n_scnum
!= N_UNDEF
)
2350 char buf
[SYMNMLEN
+ 1];
2351 struct bfd_link_hash_entry
*h
;
2353 /* This symbol is externally visible, and is defined by this
2355 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
2359 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2361 /* We are only interested in symbols that are currently
2362 undefined. If a symbol is currently known to be common,
2363 XCOFF linkers do not bring in an object file which
2364 defines it. We also don't bring in symbols to satisfy
2365 undefined references in shared objects. */
2367 && h
->type
== bfd_link_hash_undefined
2368 && (info
->output_bfd
->xvec
!= abfd
->xvec
2369 || (((struct xcoff_link_hash_entry
*) h
)->flags
2370 & XCOFF_DEF_DYNAMIC
) == 0))
2372 if (!(*info
->callbacks
2373 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2380 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2383 /* We do not need this object file. */
2387 /* Check a single archive element to see if we need to include it in
2388 the link. *PNEEDED is set according to whether this element is
2389 needed in the link or not. This is called via
2390 _bfd_generic_link_add_archive_symbols. */
2393 xcoff_link_check_archive_element (bfd
*abfd
,
2394 struct bfd_link_info
*info
,
2395 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
2396 const char *name ATTRIBUTE_UNUSED
,
2397 bfd_boolean
*pneeded
)
2399 bfd_boolean keep_syms_p
;
2402 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2403 if (!_bfd_coff_get_external_symbols (abfd
))
2407 if (!xcoff_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
2412 /* Potentially, the add_archive_element hook may have set a
2413 substitute BFD for us. */
2417 && !_bfd_coff_free_symbols (oldbfd
))
2419 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2420 if (!_bfd_coff_get_external_symbols (abfd
))
2423 if (!xcoff_link_add_symbols (abfd
, info
))
2425 if (info
->keep_memory
)
2431 if (!_bfd_coff_free_symbols (abfd
))
2438 /* Given an XCOFF BFD, add symbols to the global hash table as
2442 _bfd_xcoff_bfd_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2444 switch (bfd_get_format (abfd
))
2447 return xcoff_link_add_object_symbols (abfd
, info
);
2450 /* If the archive has a map, do the usual search. We then need
2451 to check the archive for dynamic objects, because they may not
2452 appear in the archive map even though they should, perhaps, be
2453 included. If the archive has no map, we just consider each object
2454 file in turn, since that apparently is what the AIX native linker
2456 if (bfd_has_map (abfd
))
2458 if (! (_bfd_generic_link_add_archive_symbols
2459 (abfd
, info
, xcoff_link_check_archive_element
)))
2466 member
= bfd_openr_next_archived_file (abfd
, NULL
);
2467 while (member
!= NULL
)
2469 if (bfd_check_format (member
, bfd_object
)
2470 && (info
->output_bfd
->xvec
== member
->xvec
)
2471 && (! bfd_has_map (abfd
) || (member
->flags
& DYNAMIC
) != 0))
2475 if (! xcoff_link_check_archive_element (member
, info
,
2476 NULL
, NULL
, &needed
))
2479 member
->archive_pass
= -1;
2481 member
= bfd_openr_next_archived_file (abfd
, member
);
2488 bfd_set_error (bfd_error_wrong_format
);
2494 _bfd_xcoff_define_common_symbol (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2495 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2496 struct bfd_link_hash_entry
*harg
)
2498 struct xcoff_link_hash_entry
*h
;
2500 if (!bfd_generic_define_common_symbol (output_bfd
, info
, harg
))
2503 h
= (struct xcoff_link_hash_entry
*) harg
;
2504 h
->flags
|= XCOFF_DEF_REGULAR
;
2508 /* If symbol H has not been interpreted as a function descriptor,
2509 see whether it should be. Set up its descriptor information if so. */
2512 xcoff_find_function (struct bfd_link_info
*info
,
2513 struct xcoff_link_hash_entry
*h
)
2515 if ((h
->flags
& XCOFF_DESCRIPTOR
) == 0
2516 && h
->root
.root
.string
[0] != '.')
2519 struct xcoff_link_hash_entry
*hfn
;
2522 amt
= strlen (h
->root
.root
.string
) + 2;
2523 fnname
= bfd_malloc (amt
);
2527 strcpy (fnname
+ 1, h
->root
.root
.string
);
2528 hfn
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2529 fnname
, FALSE
, FALSE
, TRUE
);
2532 && hfn
->smclas
== XMC_PR
2533 && (hfn
->root
.type
== bfd_link_hash_defined
2534 || hfn
->root
.type
== bfd_link_hash_defweak
))
2536 h
->flags
|= XCOFF_DESCRIPTOR
;
2537 h
->descriptor
= hfn
;
2538 hfn
->descriptor
= h
;
2544 /* Return true if the given bfd contains at least one shared object. */
2547 xcoff_archive_contains_shared_object_p (struct bfd_link_info
*info
,
2550 struct xcoff_archive_info
*archive_info
;
2553 archive_info
= xcoff_get_archive_info (info
, archive
);
2554 if (!archive_info
->know_contains_shared_object_p
)
2556 member
= bfd_openr_next_archived_file (archive
, NULL
);
2557 while (member
!= NULL
&& (member
->flags
& DYNAMIC
) == 0)
2558 member
= bfd_openr_next_archived_file (archive
, member
);
2560 archive_info
->contains_shared_object_p
= (member
!= NULL
);
2561 archive_info
->know_contains_shared_object_p
= 1;
2563 return archive_info
->contains_shared_object_p
;
2566 /* Symbol H qualifies for export by -bexpfull. Return true if it also
2567 qualifies for export by -bexpall. */
2570 xcoff_covered_by_expall_p (struct xcoff_link_hash_entry
*h
)
2572 /* Exclude symbols beginning with '_'. */
2573 if (h
->root
.root
.string
[0] == '_')
2576 /* Exclude archive members that would otherwise be unreferenced. */
2577 if ((h
->flags
& XCOFF_MARK
) == 0
2578 && (h
->root
.type
== bfd_link_hash_defined
2579 || h
->root
.type
== bfd_link_hash_defweak
)
2580 && h
->root
.u
.def
.section
->owner
!= NULL
2581 && h
->root
.u
.def
.section
->owner
->my_archive
!= NULL
)
2587 /* Return true if symbol H qualifies for the forms of automatic export
2588 specified by AUTO_EXPORT_FLAGS. */
2591 xcoff_auto_export_p (struct bfd_link_info
*info
,
2592 struct xcoff_link_hash_entry
*h
,
2593 unsigned int auto_export_flags
)
2595 /* Don't automatically export things that were explicitly exported. */
2596 if ((h
->flags
& XCOFF_EXPORT
) != 0)
2599 /* Don't export things that we don't define. */
2600 if ((h
->flags
& XCOFF_DEF_REGULAR
) == 0)
2603 /* Don't export functions; export their descriptors instead. */
2604 if (h
->root
.root
.string
[0] == '.')
2607 /* We don't export a symbol which is being defined by an object
2608 included from an archive which contains a shared object. The
2609 rationale is that if an archive contains both an unshared and
2610 a shared object, then there must be some reason that the
2611 unshared object is unshared, and we don't want to start
2612 providing a shared version of it. In particular, this solves
2613 a bug involving the _savefNN set of functions. gcc will call
2614 those functions without providing a slot to restore the TOC,
2615 so it is essential that these functions be linked in directly
2616 and not from a shared object, which means that a shared
2617 object which also happens to link them in must not export
2618 them. This is confusing, but I haven't been able to think of
2619 a different approach. Note that the symbols can, of course,
2620 be exported explicitly. */
2621 if (h
->root
.type
== bfd_link_hash_defined
2622 || h
->root
.type
== bfd_link_hash_defweak
)
2626 owner
= h
->root
.u
.def
.section
->owner
;
2628 && owner
->my_archive
!= NULL
2629 && xcoff_archive_contains_shared_object_p (info
, owner
->my_archive
))
2633 /* Otherwise, all symbols are exported by -bexpfull. */
2634 if ((auto_export_flags
& XCOFF_EXPFULL
) != 0)
2637 /* Despite its name, -bexpall exports most but not all symbols. */
2638 if ((auto_export_flags
& XCOFF_EXPALL
) != 0
2639 && xcoff_covered_by_expall_p (h
))
2645 /* Return true if relocation REL needs to be copied to the .loader section.
2646 If REL is against a global symbol, H is that symbol, otherwise it
2650 xcoff_need_ldrel_p (struct bfd_link_info
*info
, struct internal_reloc
*rel
,
2651 struct xcoff_link_hash_entry
*h
)
2653 if (!xcoff_hash_table (info
)->loader_section
)
2656 switch (rel
->r_type
)
2663 /* We should never need a .loader reloc for a TOC-relative reloc. */
2667 /* In this case, relocations against defined symbols can be resolved
2670 || h
->root
.type
== bfd_link_hash_defined
2671 || h
->root
.type
== bfd_link_hash_defweak
2672 || h
->root
.type
== bfd_link_hash_common
)
2675 /* We will always provide a local definition of function symbols,
2676 even if we don't have one yet. */
2677 if ((h
->flags
& XCOFF_CALLED
) != 0)
2686 /* Absolute relocations against absolute symbols can be
2687 resolved statically. */
2688 if (h
!= NULL
&& bfd_is_abs_symbol (&h
->root
))
2695 /* Mark a symbol as not being garbage, including the section in which
2698 static inline bfd_boolean
2699 xcoff_mark_symbol (struct bfd_link_info
*info
, struct xcoff_link_hash_entry
*h
)
2701 if ((h
->flags
& XCOFF_MARK
) != 0)
2704 h
->flags
|= XCOFF_MARK
;
2706 /* If we're marking an undefined symbol, try find some way of
2708 if (!bfd_link_relocatable (info
)
2709 && (h
->flags
& XCOFF_IMPORT
) == 0
2710 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
2711 && (h
->root
.type
== bfd_link_hash_undefined
2712 || h
->root
.type
== bfd_link_hash_undefweak
))
2714 /* First check whether this symbol can be interpreted as an
2715 undefined function descriptor for a defined function symbol. */
2716 if (!xcoff_find_function (info
, h
))
2719 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
2720 && (h
->descriptor
->root
.type
== bfd_link_hash_defined
2721 || h
->descriptor
->root
.type
== bfd_link_hash_defweak
))
2723 /* This is a descriptor for a defined symbol, but the input
2724 objects have not defined the descriptor itself. Fill in
2725 the definition automatically.
2727 Note that we do this even if we found a dynamic definition
2728 of H. The local function definition logically overrides
2732 sec
= xcoff_hash_table (info
)->descriptor_section
;
2733 h
->root
.type
= bfd_link_hash_defined
;
2734 h
->root
.u
.def
.section
= sec
;
2735 h
->root
.u
.def
.value
= sec
->size
;
2737 h
->flags
|= XCOFF_DEF_REGULAR
;
2739 /* The size of the function descriptor depends on whether this
2740 is xcoff32 (12) or xcoff64 (24). */
2741 sec
->size
+= bfd_xcoff_function_descriptor_size (sec
->owner
);
2743 /* A function descriptor uses two relocs: one for the
2744 associated code, and one for the TOC address. */
2745 xcoff_hash_table (info
)->ldrel_count
+= 2;
2746 sec
->reloc_count
+= 2;
2748 /* Mark the function itself. */
2749 if (!xcoff_mark_symbol (info
, h
->descriptor
))
2752 /* Mark the TOC section, so that we get an anchor
2753 to relocate against. */
2754 if (!xcoff_mark (info
, xcoff_hash_table (info
)->toc_section
))
2757 /* We handle writing out the contents of the descriptor in
2758 xcoff_write_global_symbol. */
2760 else if (info
->static_link
)
2761 /* We can't get a symbol value dynamically, so just assume
2762 that it's undefined. */
2763 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2764 else if ((h
->flags
& XCOFF_CALLED
) != 0)
2766 /* This is a function symbol for which we need to create
2769 struct xcoff_link_hash_entry
*hds
;
2771 /* Mark the descriptor (and its TOC section). */
2772 hds
= h
->descriptor
;
2773 BFD_ASSERT ((hds
->root
.type
== bfd_link_hash_undefined
2774 || hds
->root
.type
== bfd_link_hash_undefweak
)
2775 && (hds
->flags
& XCOFF_DEF_REGULAR
) == 0);
2776 if (!xcoff_mark_symbol (info
, hds
))
2779 /* Treat this symbol as undefined if the descriptor was. */
2780 if ((hds
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
2781 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2783 /* Allocate room for the global linkage code itself. */
2784 sec
= xcoff_hash_table (info
)->linkage_section
;
2785 h
->root
.type
= bfd_link_hash_defined
;
2786 h
->root
.u
.def
.section
= sec
;
2787 h
->root
.u
.def
.value
= sec
->size
;
2789 h
->flags
|= XCOFF_DEF_REGULAR
;
2790 sec
->size
+= bfd_xcoff_glink_code_size (info
->output_bfd
);
2792 /* The global linkage code requires a TOC entry for the
2794 if (hds
->toc_section
== NULL
)
2799 xcoff32 uses 4 bytes in the toc.
2800 xcoff64 uses 8 bytes in the toc. */
2801 if (bfd_xcoff_is_xcoff64 (info
->output_bfd
))
2803 else if (bfd_xcoff_is_xcoff32 (info
->output_bfd
))
2808 /* Allocate room in the fallback TOC section. */
2809 hds
->toc_section
= xcoff_hash_table (info
)->toc_section
;
2810 hds
->u
.toc_offset
= hds
->toc_section
->size
;
2811 hds
->toc_section
->size
+= byte_size
;
2812 if (!xcoff_mark (info
, hds
->toc_section
))
2815 /* Allocate room for a static and dynamic R_TOC
2817 ++xcoff_hash_table (info
)->ldrel_count
;
2818 ++hds
->toc_section
->reloc_count
;
2820 /* Set the index to -2 to force this symbol to
2823 hds
->flags
|= XCOFF_SET_TOC
| XCOFF_LDREL
;
2826 else if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0)
2828 /* Record that the symbol was undefined, then import it.
2829 -brtl links use a special fake import file. */
2830 h
->flags
|= XCOFF_WAS_UNDEFINED
| XCOFF_IMPORT
;
2831 if (xcoff_hash_table (info
)->rtld
)
2833 if (!xcoff_set_import_path (info
, h
, "", "..", ""))
2838 if (!xcoff_set_import_path (info
, h
, NULL
, NULL
, NULL
))
2844 if (h
->root
.type
== bfd_link_hash_defined
2845 || h
->root
.type
== bfd_link_hash_defweak
)
2849 hsec
= h
->root
.u
.def
.section
;
2850 if (! bfd_is_abs_section (hsec
)
2851 && (hsec
->flags
& SEC_MARK
) == 0)
2853 if (! xcoff_mark (info
, hsec
))
2858 if (h
->toc_section
!= NULL
2859 && (h
->toc_section
->flags
& SEC_MARK
) == 0)
2861 if (! xcoff_mark (info
, h
->toc_section
))
2868 /* Look for a symbol called NAME. If the symbol is defined, mark it.
2869 If the symbol exists, set FLAGS. */
2872 xcoff_mark_symbol_by_name (struct bfd_link_info
*info
,
2873 const char *name
, unsigned int flags
)
2875 struct xcoff_link_hash_entry
*h
;
2877 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
,
2878 FALSE
, FALSE
, TRUE
);
2882 if (h
->root
.type
== bfd_link_hash_defined
2883 || h
->root
.type
== bfd_link_hash_defweak
)
2885 if (!xcoff_mark (info
, h
->root
.u
.def
.section
))
2892 /* The mark phase of garbage collection. For a given section, mark
2893 it, and all the sections which define symbols to which it refers.
2894 Because this function needs to look at the relocs, we also count
2895 the number of relocs which need to be copied into the .loader
2899 xcoff_mark (struct bfd_link_info
*info
, asection
*sec
)
2901 if (bfd_is_const_section (sec
)
2902 || (sec
->flags
& SEC_MARK
) != 0)
2905 sec
->flags
|= SEC_MARK
;
2907 if (sec
->owner
->xvec
== info
->output_bfd
->xvec
2908 && coff_section_data (sec
->owner
, sec
) != NULL
2909 && xcoff_section_data (sec
->owner
, sec
) != NULL
)
2911 struct xcoff_link_hash_entry
**syms
;
2912 struct internal_reloc
*rel
, *relend
;
2914 unsigned long i
, first
, last
;
2916 /* Mark all the symbols in this section. */
2917 syms
= obj_xcoff_sym_hashes (sec
->owner
);
2918 csects
= xcoff_data (sec
->owner
)->csects
;
2919 first
= xcoff_section_data (sec
->owner
, sec
)->first_symndx
;
2920 last
= xcoff_section_data (sec
->owner
, sec
)->last_symndx
;
2921 for (i
= first
; i
<= last
; i
++)
2922 if (csects
[i
] == sec
2924 && (syms
[i
]->flags
& XCOFF_MARK
) == 0)
2926 if (!xcoff_mark_symbol (info
, syms
[i
]))
2930 /* Look through the section relocs. */
2931 if ((sec
->flags
& SEC_RELOC
) != 0
2932 && sec
->reloc_count
> 0)
2934 rel
= xcoff_read_internal_relocs (sec
->owner
, sec
, TRUE
,
2938 relend
= rel
+ sec
->reloc_count
;
2939 for (; rel
< relend
; rel
++)
2941 struct xcoff_link_hash_entry
*h
;
2943 if ((unsigned int) rel
->r_symndx
2944 > obj_raw_syment_count (sec
->owner
))
2947 h
= obj_xcoff_sym_hashes (sec
->owner
)[rel
->r_symndx
];
2950 if ((h
->flags
& XCOFF_MARK
) == 0)
2952 if (!xcoff_mark_symbol (info
, h
))
2960 rsec
= xcoff_data (sec
->owner
)->csects
[rel
->r_symndx
];
2962 && (rsec
->flags
& SEC_MARK
) == 0)
2964 if (!xcoff_mark (info
, rsec
))
2969 /* See if this reloc needs to be copied into the .loader
2971 if (xcoff_need_ldrel_p (info
, rel
, h
))
2973 ++xcoff_hash_table (info
)->ldrel_count
;
2975 h
->flags
|= XCOFF_LDREL
;
2979 if (! info
->keep_memory
2980 && coff_section_data (sec
->owner
, sec
) != NULL
2981 && ! coff_section_data (sec
->owner
, sec
)->keep_relocs
)
2983 free (coff_section_data (sec
->owner
, sec
)->relocs
);
2984 coff_section_data (sec
->owner
, sec
)->relocs
= NULL
;
2992 /* Routines that are called after all the input files have been
2993 handled, but before the sections are laid out in memory. */
2995 /* The sweep phase of garbage collection. Remove all garbage
2999 xcoff_sweep (struct bfd_link_info
*info
)
3003 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3007 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3009 if ((o
->flags
& SEC_MARK
) == 0)
3011 /* Keep all sections from non-XCOFF input files. Keep
3012 special sections. Keep .debug sections for the
3014 if (sub
->xvec
!= info
->output_bfd
->xvec
3015 || o
== xcoff_hash_table (info
)->debug_section
3016 || o
== xcoff_hash_table (info
)->loader_section
3017 || o
== xcoff_hash_table (info
)->linkage_section
3018 || o
== xcoff_hash_table (info
)->descriptor_section
3019 || (bfd_section_flags (o
) & SEC_DEBUGGING
)
3020 || strcmp (o
->name
, ".debug") == 0)
3021 o
->flags
|= SEC_MARK
;
3032 /* Record the number of elements in a set. This is used to output the
3033 correct csect length. */
3036 bfd_xcoff_link_record_set (bfd
*output_bfd
,
3037 struct bfd_link_info
*info
,
3038 struct bfd_link_hash_entry
*harg
,
3041 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3042 struct xcoff_link_size_list
*n
;
3045 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3048 /* This will hardly ever be called. I don't want to burn four bytes
3049 per global symbol, so instead the size is kept on a linked list
3050 attached to the hash table. */
3052 n
= bfd_alloc (output_bfd
, amt
);
3055 n
->next
= xcoff_hash_table (info
)->size_list
;
3058 xcoff_hash_table (info
)->size_list
= n
;
3060 h
->flags
|= XCOFF_HAS_SIZE
;
3065 /* Import a symbol. */
3068 bfd_xcoff_import_symbol (bfd
*output_bfd
,
3069 struct bfd_link_info
*info
,
3070 struct bfd_link_hash_entry
*harg
,
3072 const char *imppath
,
3073 const char *impfile
,
3074 const char *impmember
,
3075 unsigned int syscall_flag
)
3077 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3079 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3082 /* A symbol name which starts with a period is the code for a
3083 function. If the symbol is undefined, then add an undefined
3084 symbol for the function descriptor, and import that instead. */
3085 if (h
->root
.root
.string
[0] == '.'
3086 && h
->root
.type
== bfd_link_hash_undefined
3087 && val
== (bfd_vma
) -1)
3089 struct xcoff_link_hash_entry
*hds
;
3091 hds
= h
->descriptor
;
3094 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3095 h
->root
.root
.string
+ 1,
3099 if (hds
->root
.type
== bfd_link_hash_new
)
3101 hds
->root
.type
= bfd_link_hash_undefined
;
3102 hds
->root
.u
.undef
.abfd
= h
->root
.u
.undef
.abfd
;
3104 hds
->flags
|= XCOFF_DESCRIPTOR
;
3105 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
3106 hds
->descriptor
= h
;
3107 h
->descriptor
= hds
;
3110 /* Now, if the descriptor is undefined, import the descriptor
3111 rather than the symbol we were told to import. FIXME: Is
3112 this correct in all cases? */
3113 if (hds
->root
.type
== bfd_link_hash_undefined
)
3117 h
->flags
|= (XCOFF_IMPORT
| syscall_flag
);
3119 if (val
!= (bfd_vma
) -1)
3121 if (h
->root
.type
== bfd_link_hash_defined
3122 && (!bfd_is_abs_symbol (&h
->root
)
3123 || h
->root
.u
.def
.value
!= val
))
3124 (*info
->callbacks
->multiple_definition
) (info
, &h
->root
, output_bfd
,
3125 bfd_abs_section_ptr
, val
);
3127 h
->root
.type
= bfd_link_hash_defined
;
3128 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3129 h
->root
.u
.def
.value
= val
;
3133 if (!xcoff_set_import_path (info
, h
, imppath
, impfile
, impmember
))
3139 /* Export a symbol. */
3142 bfd_xcoff_export_symbol (bfd
*output_bfd
,
3143 struct bfd_link_info
*info
,
3144 struct bfd_link_hash_entry
*harg
)
3146 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3148 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3151 h
->flags
|= XCOFF_EXPORT
;
3153 /* FIXME: I'm not at all sure what syscall is supposed to mean, so
3154 I'm just going to ignore it until somebody explains it. */
3156 /* Make sure we don't garbage collect this symbol. */
3157 if (! xcoff_mark_symbol (info
, h
))
3160 /* If this is a function descriptor, make sure we don't garbage
3161 collect the associated function code. We normally don't have to
3162 worry about this, because the descriptor will be attached to a
3163 section with relocs, but if we are creating the descriptor
3164 ourselves those relocs will not be visible to the mark code. */
3165 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3167 if (! xcoff_mark_symbol (info
, h
->descriptor
))
3174 /* Count a reloc against a symbol. This is called for relocs
3175 generated by the linker script, typically for global constructors
3179 bfd_xcoff_link_count_reloc (bfd
*output_bfd
,
3180 struct bfd_link_info
*info
,
3183 struct xcoff_link_hash_entry
*h
;
3185 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3188 h
= ((struct xcoff_link_hash_entry
*)
3189 bfd_wrapped_link_hash_lookup (output_bfd
, info
, name
, FALSE
, FALSE
,
3193 _bfd_error_handler (_("%s: no such symbol"), name
);
3194 bfd_set_error (bfd_error_no_symbols
);
3198 h
->flags
|= XCOFF_REF_REGULAR
;
3199 if (xcoff_hash_table (info
)->loader_section
)
3201 h
->flags
|= XCOFF_LDREL
;
3202 ++xcoff_hash_table (info
)->ldrel_count
;
3205 /* Mark the symbol to avoid garbage collection. */
3206 if (! xcoff_mark_symbol (info
, h
))
3212 /* This function is called for each symbol to which the linker script
3214 FIXME: In cases like the linker test ld-scripts/defined5 where a
3215 symbol is defined both by an input object file and the script,
3216 the script definition doesn't override the object file definition
3217 as is usual for other targets. At least not when the symbol is
3218 output. Other uses of the symbol value by the linker do use the
3222 bfd_xcoff_record_link_assignment (bfd
*output_bfd
,
3223 struct bfd_link_info
*info
,
3226 struct xcoff_link_hash_entry
*h
;
3228 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3231 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
, TRUE
,
3236 h
->flags
|= XCOFF_DEF_REGULAR
;
3241 /* An xcoff_link_hash_traverse callback for which DATA points to an
3242 xcoff_loader_info. Mark all symbols that should be automatically
3246 xcoff_mark_auto_exports (struct xcoff_link_hash_entry
*h
, void *data
)
3248 struct xcoff_loader_info
*ldinfo
;
3250 ldinfo
= (struct xcoff_loader_info
*) data
;
3251 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3253 if (!xcoff_mark_symbol (ldinfo
->info
, h
))
3254 ldinfo
->failed
= TRUE
;
3259 /* Add a symbol to the .loader symbols, if necessary. */
3261 /* INPUT_BFD has an external symbol associated with hash table entry H
3262 and csect CSECT. Return true if INPUT_BFD defines H. */
3265 xcoff_final_definition_p (bfd
*input_bfd
, struct xcoff_link_hash_entry
*h
,
3268 switch (h
->root
.type
)
3270 case bfd_link_hash_defined
:
3271 case bfd_link_hash_defweak
:
3272 /* No input bfd owns absolute symbols. They are written by
3273 xcoff_write_global_symbol instead. */
3274 return (!bfd_is_abs_section (csect
)
3275 && h
->root
.u
.def
.section
== csect
);
3277 case bfd_link_hash_common
:
3278 return h
->root
.u
.c
.p
->section
->owner
== input_bfd
;
3280 case bfd_link_hash_undefined
:
3281 case bfd_link_hash_undefweak
:
3282 /* We can't treat undef.abfd as the owner because that bfd
3283 might be a dynamic object. Allow any bfd to claim it. */
3291 /* See if H should have a loader symbol associated with it. */
3294 xcoff_build_ldsym (struct xcoff_loader_info
*ldinfo
,
3295 struct xcoff_link_hash_entry
*h
)
3299 /* Warn if this symbol is exported but not defined. */
3300 if ((h
->flags
& XCOFF_EXPORT
) != 0
3301 && (h
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
3304 (_("warning: attempt to export undefined symbol `%s'"),
3305 h
->root
.root
.string
);
3309 /* We need to add a symbol to the .loader section if it is mentioned
3310 in a reloc which we are copying to the .loader section and it was
3311 not defined or common, or if it is the entry point, or if it is
3313 if (((h
->flags
& XCOFF_LDREL
) == 0
3314 || h
->root
.type
== bfd_link_hash_defined
3315 || h
->root
.type
== bfd_link_hash_defweak
3316 || h
->root
.type
== bfd_link_hash_common
)
3317 && (h
->flags
& XCOFF_ENTRY
) == 0
3318 && (h
->flags
& XCOFF_EXPORT
) == 0)
3321 /* We need to add this symbol to the .loader symbols. */
3323 BFD_ASSERT (h
->ldsym
== NULL
);
3324 amt
= sizeof (struct internal_ldsym
);
3325 h
->ldsym
= bfd_zalloc (ldinfo
->output_bfd
, amt
);
3326 if (h
->ldsym
== NULL
)
3328 ldinfo
->failed
= TRUE
;
3332 if ((h
->flags
& XCOFF_IMPORT
) != 0)
3334 /* Give imported descriptors class XMC_DS rather than XMC_UA. */
3335 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3337 h
->ldsym
->l_ifile
= h
->ldindx
;
3340 /* The first 3 symbol table indices are reserved to indicate the
3341 data, text and bss sections. */
3342 h
->ldindx
= ldinfo
->ldsym_count
+ 3;
3344 ++ldinfo
->ldsym_count
;
3346 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
->output_bfd
, ldinfo
,
3347 h
->ldsym
, h
->root
.root
.string
))
3350 h
->flags
|= XCOFF_BUILT_LDSYM
;
3354 /* An xcoff_htab_traverse callback that is called for each symbol
3355 once garbage collection is complete. */
3358 xcoff_post_gc_symbol (struct xcoff_link_hash_entry
*h
, void * p
)
3360 struct xcoff_loader_info
*ldinfo
= (struct xcoff_loader_info
*) p
;
3362 /* __rtinit, this symbol has special handling. */
3363 if (h
->flags
& XCOFF_RTINIT
)
3366 /* We don't want to garbage collect symbols which are not defined in
3367 XCOFF files. This is a convenient place to mark them. */
3368 if (xcoff_hash_table (ldinfo
->info
)->gc
3369 && (h
->flags
& XCOFF_MARK
) == 0
3370 && (h
->root
.type
== bfd_link_hash_defined
3371 || h
->root
.type
== bfd_link_hash_defweak
)
3372 && (h
->root
.u
.def
.section
->owner
== NULL
3373 || (h
->root
.u
.def
.section
->owner
->xvec
3374 != ldinfo
->info
->output_bfd
->xvec
)))
3375 h
->flags
|= XCOFF_MARK
;
3377 /* Skip discarded symbols. */
3378 if (xcoff_hash_table (ldinfo
->info
)->gc
3379 && (h
->flags
& XCOFF_MARK
) == 0)
3382 /* If this is still a common symbol, and it wasn't garbage
3383 collected, we need to actually allocate space for it in the .bss
3385 if (h
->root
.type
== bfd_link_hash_common
3386 && h
->root
.u
.c
.p
->section
->size
== 0)
3388 BFD_ASSERT (bfd_is_com_section (h
->root
.u
.c
.p
->section
));
3389 h
->root
.u
.c
.p
->section
->size
= h
->root
.u
.c
.size
;
3392 if (xcoff_hash_table (ldinfo
->info
)->loader_section
)
3394 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3395 h
->flags
|= XCOFF_EXPORT
;
3397 if (!xcoff_build_ldsym (ldinfo
, h
))
3404 /* INPUT_BFD includes XCOFF symbol ISYM, which is associated with linker
3405 hash table entry H and csect CSECT. AUX contains ISYM's auxillary
3406 csect information, if any. NAME is the function's name if the name
3407 is stored in the .debug section, otherwise it is null.
3409 Return 1 if we should include an appropriately-adjusted ISYM
3410 in the output file, 0 if we should discard ISYM, or -1 if an
3414 xcoff_keep_symbol_p (struct bfd_link_info
*info
, bfd
*input_bfd
,
3415 struct internal_syment
*isym
,
3416 union internal_auxent
*aux
,
3417 struct xcoff_link_hash_entry
*h
,
3418 asection
*csect
, const char *name
)
3422 /* If we are skipping this csect, we want to strip the symbol too. */
3426 /* Likewise if we garbage-collected the csect. */
3427 if (xcoff_hash_table (info
)->gc
3428 && !bfd_is_abs_section (csect
)
3429 && !bfd_is_und_section (csect
)
3430 && (csect
->flags
& SEC_MARK
) == 0)
3433 /* An XCOFF linker always removes C_STAT symbols. */
3434 if (isym
->n_sclass
== C_STAT
)
3437 /* We generate the TOC anchor separately. */
3438 if (isym
->n_sclass
== C_HIDEXT
3439 && aux
->x_csect
.x_smclas
== XMC_TC0
)
3442 /* If we are stripping all symbols, we want to discard this one. */
3443 if (info
->strip
== strip_all
)
3446 /* Discard symbols that are defined elsewhere. */
3447 if (EXTERN_SYM_P (isym
->n_sclass
))
3449 if ((h
->flags
& XCOFF_ALLOCATED
) != 0)
3451 if (!xcoff_final_definition_p (input_bfd
, h
, csect
))
3455 /* If we're discarding local symbols, check whether ISYM is local. */
3456 smtyp
= SMTYP_SMTYP (aux
->x_csect
.x_smtyp
);
3457 if (info
->discard
== discard_all
3458 && !EXTERN_SYM_P (isym
->n_sclass
)
3459 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
))
3462 /* If we're stripping debugging symbols, check whether ISYM is one. */
3463 if (info
->strip
== strip_debugger
3464 && isym
->n_scnum
== N_DEBUG
)
3467 /* If we are stripping symbols based on name, check how ISYM's
3468 name should be handled. */
3469 if (info
->strip
== strip_some
3470 || info
->discard
== discard_l
)
3472 char buf
[SYMNMLEN
+ 1];
3476 name
= _bfd_coff_internal_syment_name (input_bfd
, isym
, buf
);
3481 if (info
->strip
== strip_some
3482 && bfd_hash_lookup (info
->keep_hash
, name
, FALSE
, FALSE
) == NULL
)
3485 if (info
->discard
== discard_l
3486 && !EXTERN_SYM_P (isym
->n_sclass
)
3487 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
)
3488 && bfd_is_local_label_name (input_bfd
, name
))
3495 /* Lay out the .loader section, filling in the header and the import paths.
3496 LIBPATH is as for bfd_xcoff_size_dynamic_sections. */
3499 xcoff_build_loader_section (struct xcoff_loader_info
*ldinfo
,
3500 const char *libpath
)
3503 struct xcoff_link_hash_table
*htab
;
3504 struct internal_ldhdr
*ldhdr
;
3505 struct xcoff_import_file
*fl
;
3506 bfd_size_type stoff
;
3507 size_t impsize
, impcount
;
3511 /* Work out the size of the import file names. Each import file ID
3512 consists of three null terminated strings: the path, the file
3513 name, and the archive member name. The first entry in the list
3514 of names is the path to use to find objects, which the linker has
3515 passed in as the libpath argument. For some reason, the path
3516 entry in the other import file names appears to always be empty. */
3517 output_bfd
= ldinfo
->output_bfd
;
3518 htab
= xcoff_hash_table (ldinfo
->info
);
3519 impsize
= strlen (libpath
) + 3;
3521 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3524 impsize
+= (strlen (fl
->path
)
3526 + strlen (fl
->member
)
3530 /* Set up the .loader section header. */
3531 ldhdr
= &htab
->ldhdr
;
3532 ldhdr
->l_version
= bfd_xcoff_ldhdr_version(output_bfd
);
3533 ldhdr
->l_nsyms
= ldinfo
->ldsym_count
;
3534 ldhdr
->l_nreloc
= htab
->ldrel_count
;
3535 ldhdr
->l_istlen
= impsize
;
3536 ldhdr
->l_nimpid
= impcount
;
3537 ldhdr
->l_impoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3538 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
)
3539 + ldhdr
->l_nreloc
* bfd_xcoff_ldrelsz (output_bfd
));
3540 ldhdr
->l_stlen
= ldinfo
->string_size
;
3541 stoff
= ldhdr
->l_impoff
+ impsize
;
3542 if (ldinfo
->string_size
== 0)
3545 ldhdr
->l_stoff
= stoff
;
3547 /* 64 bit elements to ldhdr
3548 The swap out routine for 32 bit will ignore them.
3549 Nothing fancy, symbols come after the header and relocs come
3551 ldhdr
->l_symoff
= bfd_xcoff_ldhdrsz (output_bfd
);
3552 ldhdr
->l_rldoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3553 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
));
3555 /* We now know the final size of the .loader section. Allocate
3557 lsec
= htab
->loader_section
;
3558 lsec
->size
= stoff
+ ldhdr
->l_stlen
;
3559 lsec
->contents
= bfd_zalloc (output_bfd
, lsec
->size
);
3560 if (lsec
->contents
== NULL
)
3563 /* Set up the header. */
3564 bfd_xcoff_swap_ldhdr_out (output_bfd
, ldhdr
, lsec
->contents
);
3566 /* Set up the import file names. */
3567 out
= (char *) lsec
->contents
+ ldhdr
->l_impoff
;
3568 strcpy (out
, libpath
);
3569 out
+= strlen (libpath
) + 1;
3572 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3577 while ((*out
++ = *s
++) != '\0')
3580 while ((*out
++ = *s
++) != '\0')
3583 while ((*out
++ = *s
++) != '\0')
3587 BFD_ASSERT ((bfd_size_type
) ((bfd_byte
*) out
- lsec
->contents
) == stoff
);
3589 /* Set up the symbol string table. */
3590 if (ldinfo
->string_size
> 0)
3592 memcpy (out
, ldinfo
->strings
, ldinfo
->string_size
);
3593 free (ldinfo
->strings
);
3594 ldinfo
->strings
= NULL
;
3597 /* We can't set up the symbol table or the relocs yet, because we
3598 don't yet know the final position of the various sections. The
3599 .loader symbols are written out when the corresponding normal
3600 symbols are written out in xcoff_link_input_bfd or
3601 xcoff_write_global_symbol. The .loader relocs are written out
3602 when the corresponding normal relocs are handled in
3603 xcoff_link_input_bfd. */
3608 /* Build the .loader section. This is called by the XCOFF linker
3609 emulation before_allocation routine. We must set the size of the
3610 .loader section before the linker lays out the output file.
3611 LIBPATH is the library path to search for shared objects; this is
3612 normally built from the -L arguments passed to the linker. ENTRY
3613 is the name of the entry point symbol (the -e linker option).
3614 FILE_ALIGN is the alignment to use for sections within the file
3615 (the -H linker option). MAXSTACK is the maximum stack size (the
3616 -bmaxstack linker option). MAXDATA is the maximum data size (the
3617 -bmaxdata linker option). GC is whether to do garbage collection
3618 (the -bgc linker option). MODTYPE is the module type (the
3619 -bmodtype linker option). TEXTRO is whether the text section must
3620 be read only (the -btextro linker option). AUTO_EXPORT_FLAGS
3621 is a mask of XCOFF_EXPALL and XCOFF_EXPFULL. SPECIAL_SECTIONS
3622 is set by this routine to csects with magic names like _end. */
3625 bfd_xcoff_size_dynamic_sections (bfd
*output_bfd
,
3626 struct bfd_link_info
*info
,
3627 const char *libpath
,
3629 unsigned long file_align
,
3630 unsigned long maxstack
,
3631 unsigned long maxdata
,
3635 unsigned int auto_export_flags
,
3636 asection
**special_sections
,
3639 struct xcoff_loader_info ldinfo
;
3643 struct bfd_strtab_hash
*debug_strtab
;
3644 bfd_byte
*debug_contents
= NULL
;
3647 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3649 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3650 special_sections
[i
] = NULL
;
3654 ldinfo
.failed
= FALSE
;
3655 ldinfo
.output_bfd
= output_bfd
;
3657 ldinfo
.auto_export_flags
= auto_export_flags
;
3658 ldinfo
.ldsym_count
= 0;
3659 ldinfo
.string_size
= 0;
3660 ldinfo
.strings
= NULL
;
3661 ldinfo
.string_alc
= 0;
3663 xcoff_data (output_bfd
)->maxstack
= maxstack
;
3664 xcoff_data (output_bfd
)->maxdata
= maxdata
;
3665 xcoff_data (output_bfd
)->modtype
= modtype
;
3667 xcoff_hash_table (info
)->file_align
= file_align
;
3668 xcoff_hash_table (info
)->textro
= textro
;
3669 xcoff_hash_table (info
)->rtld
= rtld
;
3672 if (xcoff_hash_table (info
)->loader_section
3673 && (info
->init_function
|| info
->fini_function
|| rtld
))
3675 struct xcoff_link_hash_entry
*hsym
;
3676 struct internal_ldsym
*ldsym
;
3678 hsym
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3679 "__rtinit", FALSE
, FALSE
, TRUE
);
3683 (_("error: undefined symbol __rtinit"));
3687 xcoff_mark_symbol (info
, hsym
);
3688 hsym
->flags
|= (XCOFF_DEF_REGULAR
| XCOFF_RTINIT
);
3690 /* __rtinit initialized. */
3691 amt
= sizeof (* ldsym
);
3692 ldsym
= bfd_malloc (amt
);
3694 ldsym
->l_value
= 0; /* Will be filled in later. */
3695 ldsym
->l_scnum
= 2; /* Data section. */
3696 ldsym
->l_smtype
= XTY_SD
; /* Csect section definition. */
3697 ldsym
->l_smclas
= 5; /* .rw. */
3698 ldsym
->l_ifile
= 0; /* Special system loader symbol. */
3699 ldsym
->l_parm
= 0; /* NA. */
3701 /* Force __rtinit to be the first symbol in the loader symbol table
3702 See xcoff_build_ldsyms
3704 The first 3 symbol table indices are reserved to indicate the data,
3705 text and bss sections. */
3706 BFD_ASSERT (0 == ldinfo
.ldsym_count
);
3709 ldinfo
.ldsym_count
= 1;
3710 hsym
->ldsym
= ldsym
;
3712 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
.output_bfd
, &ldinfo
,
3713 hsym
->ldsym
, hsym
->root
.root
.string
))
3716 /* This symbol is written out by xcoff_write_global_symbol
3717 Set stuff up so xcoff_write_global_symbol logic works. */
3718 hsym
->flags
|= XCOFF_DEF_REGULAR
| XCOFF_MARK
;
3719 hsym
->root
.type
= bfd_link_hash_defined
;
3720 hsym
->root
.u
.def
.value
= 0;
3723 /* Garbage collect unused sections. */
3724 if (bfd_link_relocatable (info
) || !gc
)
3727 xcoff_hash_table (info
)->gc
= FALSE
;
3729 /* We still need to call xcoff_mark, in order to set ldrel_count
3731 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3735 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3737 /* We shouldn't unconditionaly mark the TOC section.
3738 The output file should only have a TOC if either
3739 (a) one of the input files did or (b) we end up
3740 creating TOC references as part of the link process. */
3741 if (o
!= xcoff_hash_table (info
)->toc_section
3742 && (o
->flags
& SEC_MARK
) == 0)
3744 if (! xcoff_mark (info
, o
))
3753 && !xcoff_mark_symbol_by_name (info
, entry
, XCOFF_ENTRY
))
3755 if (info
->init_function
!= NULL
3756 && !xcoff_mark_symbol_by_name (info
, info
->init_function
, 0))
3758 if (info
->fini_function
!= NULL
3759 && !xcoff_mark_symbol_by_name (info
, info
->fini_function
, 0))
3761 if (auto_export_flags
!= 0)
3763 xcoff_link_hash_traverse (xcoff_hash_table (info
),
3764 xcoff_mark_auto_exports
, &ldinfo
);
3769 xcoff_hash_table (info
)->gc
= TRUE
;
3772 /* Return special sections to the caller. */
3773 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3775 sec
= xcoff_hash_table (info
)->special_sections
[i
];
3779 && (sec
->flags
& SEC_MARK
) == 0)
3782 special_sections
[i
] = sec
;
3785 if (info
->input_bfds
== NULL
)
3786 /* I'm not sure what to do in this bizarre case. */
3789 xcoff_link_hash_traverse (xcoff_hash_table (info
), xcoff_post_gc_symbol
,
3794 if (xcoff_hash_table (info
)->loader_section
3795 && !xcoff_build_loader_section (&ldinfo
, libpath
))
3798 /* Allocate space for the magic sections. */
3799 sec
= xcoff_hash_table (info
)->linkage_section
;
3802 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3803 if (sec
->contents
== NULL
)
3806 sec
= xcoff_hash_table (info
)->toc_section
;
3809 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3810 if (sec
->contents
== NULL
)
3813 sec
= xcoff_hash_table (info
)->descriptor_section
;
3816 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3817 if (sec
->contents
== NULL
)
3821 /* Now that we've done garbage collection, decide which symbols to keep,
3822 and figure out the contents of the .debug section. */
3823 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
3825 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3828 bfd_size_type symcount
;
3831 unsigned int *lineno_counts
;
3832 struct xcoff_link_hash_entry
**sym_hash
;
3833 bfd_byte
*esym
, *esymend
;
3834 bfd_size_type symesz
;
3836 if (sub
->xvec
!= info
->output_bfd
->xvec
)
3839 if ((sub
->flags
& DYNAMIC
) != 0
3840 && !info
->static_link
)
3843 if (! _bfd_coff_get_external_symbols (sub
))
3846 symcount
= obj_raw_syment_count (sub
);
3847 debug_index
= bfd_zalloc (sub
, symcount
* sizeof (long));
3848 if (debug_index
== NULL
)
3850 xcoff_data (sub
)->debug_indices
= debug_index
;
3852 if (info
->strip
== strip_all
3853 || info
->strip
== strip_debugger
3854 || info
->discard
== discard_all
)
3855 /* We're stripping all debugging information, so there's no need
3856 to read SUB's .debug section. */
3860 /* Grab the contents of SUB's .debug section, if any. */
3861 subdeb
= bfd_get_section_by_name (sub
, ".debug");
3862 if (subdeb
!= NULL
&& subdeb
->size
> 0)
3864 /* We use malloc and copy the names into the debug
3865 stringtab, rather than bfd_alloc, because I expect
3866 that, when linking many files together, many of the
3867 strings will be the same. Storing the strings in the
3868 hash table should save space in this case. */
3869 if (!bfd_malloc_and_get_section (sub
, subdeb
, &debug_contents
))
3874 csectpp
= xcoff_data (sub
)->csects
;
3875 lineno_counts
= xcoff_data (sub
)->lineno_counts
;
3876 sym_hash
= obj_xcoff_sym_hashes (sub
);
3877 symesz
= bfd_coff_symesz (sub
);
3878 esym
= (bfd_byte
*) obj_coff_external_syms (sub
);
3879 esymend
= esym
+ symcount
* symesz
;
3881 while (esym
< esymend
)
3883 struct internal_syment sym
;
3884 union internal_auxent aux
;
3889 bfd_coff_swap_sym_in (sub
, esym
, &sym
);
3891 /* Read in the csect information, if any. */
3892 if (CSECT_SYM_P (sym
.n_sclass
))
3894 BFD_ASSERT (sym
.n_numaux
> 0);
3895 bfd_coff_swap_aux_in (sub
, esym
+ symesz
* sym
.n_numaux
,
3896 sym
.n_type
, sym
.n_sclass
,
3897 sym
.n_numaux
- 1, sym
.n_numaux
, &aux
);
3900 /* If this symbol's name is stored in the debug section,
3901 get a pointer to it. */
3902 if (debug_contents
!= NULL
3903 && sym
._n
._n_n
._n_zeroes
== 0
3904 && bfd_coff_symname_in_debug (sub
, &sym
))
3905 name
= (const char *) debug_contents
+ sym
._n
._n_n
._n_offset
;
3909 /* Decide whether to copy this symbol to the output file. */
3911 keep_p
= xcoff_keep_symbol_p (info
, sub
, &sym
, &aux
,
3912 *sym_hash
, csect
, name
);
3917 /* Use a debug_index of -2 to record that a symbol should
3922 /* See whether we should store the symbol name in the
3923 output .debug section. */
3928 indx
= _bfd_stringtab_add (debug_strtab
, name
, TRUE
, TRUE
);
3929 if (indx
== (bfd_size_type
) -1)
3931 *debug_index
= indx
;
3936 (*sym_hash
)->flags
|= XCOFF_ALLOCATED
;
3937 if (*lineno_counts
> 0)
3938 csect
->output_section
->lineno_count
+= *lineno_counts
;
3941 esym
+= (sym
.n_numaux
+ 1) * symesz
;
3942 csectpp
+= sym
.n_numaux
+ 1;
3943 sym_hash
+= sym
.n_numaux
+ 1;
3944 lineno_counts
+= sym
.n_numaux
+ 1;
3945 debug_index
+= sym
.n_numaux
+ 1;
3950 free (debug_contents
);
3951 debug_contents
= NULL
;
3953 /* Clear the size of subdeb, so that it is not included directly
3954 in the output file. */
3958 if (! info
->keep_memory
)
3960 if (! _bfd_coff_free_symbols (sub
))
3965 if (info
->strip
!= strip_all
)
3966 xcoff_hash_table (info
)->debug_section
->size
=
3967 _bfd_stringtab_size (debug_strtab
);
3972 free (ldinfo
.strings
);
3973 free (debug_contents
);
3978 bfd_xcoff_link_generate_rtinit (bfd
*abfd
,
3983 struct bfd_in_memory
*bim
;
3985 bim
= bfd_malloc ((bfd_size_type
) sizeof (* bim
));
3992 abfd
->link
.next
= 0;
3993 abfd
->format
= bfd_object
;
3994 abfd
->iostream
= (void *) bim
;
3995 abfd
->flags
= BFD_IN_MEMORY
;
3996 abfd
->iovec
= &_bfd_memory_iovec
;
3997 abfd
->direction
= write_direction
;
4001 if (! bfd_xcoff_generate_rtinit (abfd
, init
, fini
, rtld
))
4004 /* need to reset to unknown or it will not be read back in correctly */
4005 abfd
->format
= bfd_unknown
;
4006 abfd
->direction
= read_direction
;
4012 /* Return the section that defines H. Return null if no section does. */
4015 xcoff_symbol_section (struct xcoff_link_hash_entry
*h
)
4017 switch (h
->root
.type
)
4019 case bfd_link_hash_defined
:
4020 case bfd_link_hash_defweak
:
4021 return h
->root
.u
.def
.section
;
4023 case bfd_link_hash_common
:
4024 return h
->root
.u
.c
.p
->section
;
4031 /* Add a .loader relocation for input relocation IREL. If the loader
4032 relocation should be against an output section, HSEC points to the
4033 input section that IREL is against, otherwise HSEC is null. H is the
4034 symbol that IREL is against, or null if it isn't against a global symbol.
4035 REFERENCE_BFD is the bfd to use in error messages about the relocation. */
4038 xcoff_create_ldrel (bfd
*output_bfd
, struct xcoff_final_link_info
*flinfo
,
4039 asection
*output_section
, bfd
*reference_bfd
,
4040 struct internal_reloc
*irel
, asection
*hsec
,
4041 struct xcoff_link_hash_entry
*h
)
4043 struct internal_ldrel ldrel
;
4045 ldrel
.l_vaddr
= irel
->r_vaddr
;
4048 const char *secname
;
4050 secname
= hsec
->output_section
->name
;
4051 if (strcmp (secname
, ".text") == 0)
4053 else if (strcmp (secname
, ".data") == 0)
4055 else if (strcmp (secname
, ".bss") == 0)
4060 /* xgettext:c-format */
4061 (_("%pB: loader reloc in unrecognized section `%s'"),
4062 reference_bfd
, secname
);
4063 bfd_set_error (bfd_error_nonrepresentable_section
);
4072 /* xgettext:c-format */
4073 (_("%pB: `%s' in loader reloc but not loader sym"),
4074 reference_bfd
, h
->root
.root
.string
);
4075 bfd_set_error (bfd_error_bad_value
);
4078 ldrel
.l_symndx
= h
->ldindx
;
4081 ldrel
.l_symndx
= -(bfd_size_type
) 1;
4083 ldrel
.l_rtype
= (irel
->r_size
<< 8) | irel
->r_type
;
4084 ldrel
.l_rsecnm
= output_section
->target_index
;
4085 if (xcoff_hash_table (flinfo
->info
)->textro
4086 && strcmp (output_section
->name
, ".text") == 0)
4089 /* xgettext:c-format */
4090 (_("%pB: loader reloc in read-only section %pA"),
4091 reference_bfd
, output_section
);
4092 bfd_set_error (bfd_error_invalid_operation
);
4095 bfd_xcoff_swap_ldrel_out (output_bfd
, &ldrel
, flinfo
->ldrel
);
4096 flinfo
->ldrel
+= bfd_xcoff_ldrelsz (output_bfd
);
4100 /* Link an input file into the linker output file. This function
4101 handles all the sections and relocations of the input file at once. */
4104 xcoff_link_input_bfd (struct xcoff_final_link_info
*flinfo
,
4108 const char *strings
;
4109 bfd_size_type syment_base
;
4110 unsigned int n_tmask
;
4111 unsigned int n_btshft
;
4112 bfd_boolean copy
, hash
;
4113 bfd_size_type isymesz
;
4114 bfd_size_type osymesz
;
4115 bfd_size_type linesz
;
4118 struct xcoff_link_hash_entry
**sym_hash
;
4119 struct internal_syment
*isymp
;
4121 unsigned int *lineno_counts
;
4124 unsigned long output_index
;
4128 bfd_boolean keep_syms
;
4131 /* We can just skip DYNAMIC files, unless this is a static link. */
4132 if ((input_bfd
->flags
& DYNAMIC
) != 0
4133 && ! flinfo
->info
->static_link
)
4136 /* Move all the symbols to the output file. */
4137 output_bfd
= flinfo
->output_bfd
;
4139 syment_base
= obj_raw_syment_count (output_bfd
);
4140 isymesz
= bfd_coff_symesz (input_bfd
);
4141 osymesz
= bfd_coff_symesz (output_bfd
);
4142 linesz
= bfd_coff_linesz (input_bfd
);
4143 BFD_ASSERT (linesz
== bfd_coff_linesz (output_bfd
));
4145 n_tmask
= coff_data (input_bfd
)->local_n_tmask
;
4146 n_btshft
= coff_data (input_bfd
)->local_n_btshft
;
4148 /* Define macros so that ISFCN, et. al., macros work correctly. */
4149 #define N_TMASK n_tmask
4150 #define N_BTSHFT n_btshft
4153 if (! flinfo
->info
->keep_memory
)
4156 if (flinfo
->info
->traditional_format
)
4159 if (! _bfd_coff_get_external_symbols (input_bfd
))
4162 /* Make one pass over the symbols and assign indices to symbols that
4163 we have decided to keep. Also use create .loader symbol information
4164 and update information in hash table entries. */
4165 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4166 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4167 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4168 csectpp
= xcoff_data (input_bfd
)->csects
;
4169 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4170 isymp
= flinfo
->internal_syms
;
4171 indexp
= flinfo
->sym_indices
;
4172 output_index
= syment_base
;
4173 while (esym
< esym_end
)
4175 union internal_auxent aux
;
4179 bfd_coff_swap_sym_in (input_bfd
, (void *) esym
, (void *) isymp
);
4181 /* Read in the csect information, if any. */
4182 if (CSECT_SYM_P (isymp
->n_sclass
))
4184 BFD_ASSERT (isymp
->n_numaux
> 0);
4185 bfd_coff_swap_aux_in (input_bfd
,
4186 (void *) (esym
+ isymesz
* isymp
->n_numaux
),
4187 isymp
->n_type
, isymp
->n_sclass
,
4188 isymp
->n_numaux
- 1, isymp
->n_numaux
,
4191 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
4194 /* If this symbol is in the .loader section, swap out the
4195 .loader symbol information. If this is an external symbol
4196 reference to a defined symbol, though, then wait until we get
4197 to the definition. */
4198 if (EXTERN_SYM_P (isymp
->n_sclass
)
4199 && *sym_hash
!= NULL
4200 && (*sym_hash
)->ldsym
!= NULL
4201 && xcoff_final_definition_p (input_bfd
, *sym_hash
, *csectpp
))
4203 struct xcoff_link_hash_entry
*h
;
4204 struct internal_ldsym
*ldsym
;
4208 if (isymp
->n_scnum
> 0)
4210 ldsym
->l_scnum
= (*csectpp
)->output_section
->target_index
;
4211 ldsym
->l_value
= (isymp
->n_value
4212 + (*csectpp
)->output_section
->vma
4213 + (*csectpp
)->output_offset
4218 ldsym
->l_scnum
= isymp
->n_scnum
;
4219 ldsym
->l_value
= isymp
->n_value
;
4222 ldsym
->l_smtype
= smtyp
;
4223 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
4224 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4225 || (h
->flags
& XCOFF_IMPORT
) != 0)
4226 ldsym
->l_smtype
|= L_IMPORT
;
4227 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
4228 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4229 || (h
->flags
& XCOFF_EXPORT
) != 0)
4230 ldsym
->l_smtype
|= L_EXPORT
;
4231 if ((h
->flags
& XCOFF_ENTRY
) != 0)
4232 ldsym
->l_smtype
|= L_ENTRY
;
4233 if (isymp
->n_sclass
== C_AIX_WEAKEXT
)
4234 ldsym
->l_smtype
|= L_WEAK
;
4236 ldsym
->l_smclas
= aux
.x_csect
.x_smclas
;
4238 if (ldsym
->l_ifile
== (bfd_size_type
) -1)
4240 else if (ldsym
->l_ifile
== 0)
4242 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
4248 if (h
->root
.type
== bfd_link_hash_defined
4249 || h
->root
.type
== bfd_link_hash_defweak
)
4250 impbfd
= h
->root
.u
.def
.section
->owner
;
4251 else if (h
->root
.type
== bfd_link_hash_undefined
4252 || h
->root
.type
== bfd_link_hash_undefweak
)
4253 impbfd
= h
->root
.u
.undef
.abfd
;
4261 BFD_ASSERT (impbfd
->xvec
== flinfo
->output_bfd
->xvec
);
4262 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
4269 BFD_ASSERT (h
->ldindx
>= 0);
4270 bfd_xcoff_swap_ldsym_out (flinfo
->output_bfd
, ldsym
,
4273 * bfd_xcoff_ldsymsz (flinfo
->output_bfd
))));
4276 /* Fill in snentry now that we know the target_index. */
4277 if ((h
->flags
& XCOFF_ENTRY
) != 0
4278 && (h
->root
.type
== bfd_link_hash_defined
4279 || h
->root
.type
== bfd_link_hash_defweak
))
4281 xcoff_data (output_bfd
)->snentry
=
4282 h
->root
.u
.def
.section
->output_section
->target_index
;
4286 add
= 1 + isymp
->n_numaux
;
4288 if (*debug_index
== -2)
4289 /* We've decided to strip this symbol. */
4293 /* Assign the next unused index to this symbol. */
4294 *indexp
= output_index
;
4296 if (EXTERN_SYM_P (isymp
->n_sclass
))
4298 BFD_ASSERT (*sym_hash
!= NULL
);
4299 (*sym_hash
)->indx
= output_index
;
4302 /* If this is a symbol in the TOC which we may have merged
4303 (class XMC_TC), remember the symbol index of the TOC
4305 if (isymp
->n_sclass
== C_HIDEXT
4306 && aux
.x_csect
.x_smclas
== XMC_TC
4307 && *sym_hash
!= NULL
)
4309 BFD_ASSERT (((*sym_hash
)->flags
& XCOFF_SET_TOC
) == 0);
4310 BFD_ASSERT ((*sym_hash
)->toc_section
!= NULL
);
4311 (*sym_hash
)->u
.toc_indx
= output_index
;
4314 output_index
+= add
;
4317 esym
+= add
* isymesz
;
4323 for (--add
; add
> 0; --add
)
4327 /* Now write out the symbols that we decided to keep. */
4329 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4330 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4331 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4332 isymp
= flinfo
->internal_syms
;
4333 indexp
= flinfo
->sym_indices
;
4334 csectpp
= xcoff_data (input_bfd
)->csects
;
4335 lineno_counts
= xcoff_data (input_bfd
)->lineno_counts
;
4336 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4337 outsym
= flinfo
->outsyms
;
4340 while (esym
< esym_end
)
4344 add
= 1 + isymp
->n_numaux
;
4347 esym
+= add
* isymesz
;
4350 struct internal_syment isym
;
4353 /* Adjust the symbol in order to output it. */
4355 if (isym
._n
._n_n
._n_zeroes
== 0
4356 && isym
._n
._n_n
._n_offset
!= 0)
4358 /* This symbol has a long name. Enter it in the string
4359 table we are building. If *debug_index != -1, the
4360 name has already been entered in the .debug section. */
4361 if (*debug_index
>= 0)
4362 isym
._n
._n_n
._n_offset
= *debug_index
;
4368 name
= _bfd_coff_internal_syment_name (input_bfd
, &isym
, NULL
);
4372 indx
= _bfd_stringtab_add (flinfo
->strtab
, name
, hash
, copy
);
4373 if (indx
== (bfd_size_type
) -1)
4375 isym
._n
._n_n
._n_offset
= STRING_SIZE_SIZE
+ indx
;
4379 /* Make __rtinit C_HIDEXT rather than C_EXT. This avoids
4380 multiple definition problems when linking a shared object
4381 statically. (The native linker doesn't enter __rtinit into
4382 the normal table at all, but having a local symbol can make
4383 the objdump output easier to read.) */
4384 if (isym
.n_sclass
== C_EXT
4386 && ((*sym_hash
)->flags
& XCOFF_RTINIT
) != 0)
4387 isym
.n_sclass
= C_HIDEXT
;
4389 /* The value of a C_FILE symbol is the symbol index of the
4390 next C_FILE symbol. The value of the last C_FILE symbol
4391 is -1. We try to get this right, below, just before we
4392 write the symbols out, but in the general case we may
4393 have to write the symbol out twice. */
4394 if (isym
.n_sclass
== C_FILE
)
4396 if (flinfo
->last_file_index
!= -1
4397 && flinfo
->last_file
.n_value
!= (bfd_vma
) *indexp
)
4399 /* We must correct the value of the last C_FILE entry. */
4400 flinfo
->last_file
.n_value
= *indexp
;
4401 if ((bfd_size_type
) flinfo
->last_file_index
>= syment_base
)
4403 /* The last C_FILE symbol is in this input file. */
4404 bfd_coff_swap_sym_out (output_bfd
,
4405 (void *) &flinfo
->last_file
,
4406 (void *) (flinfo
->outsyms
4407 + ((flinfo
->last_file_index
4413 /* We have already written out the last C_FILE
4414 symbol. We need to write it out again. We
4415 borrow *outsym temporarily. */
4418 bfd_coff_swap_sym_out (output_bfd
,
4419 (void *) &flinfo
->last_file
,
4422 pos
= obj_sym_filepos (output_bfd
);
4423 pos
+= flinfo
->last_file_index
* osymesz
;
4424 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4425 || (bfd_bwrite (outsym
, osymesz
, output_bfd
)
4431 flinfo
->last_file_index
= *indexp
;
4432 flinfo
->last_file
= isym
;
4435 /* The value of a C_BINCL or C_EINCL symbol is a file offset
4436 into the line numbers. We update the symbol values when
4437 we handle the line numbers. */
4438 if (isym
.n_sclass
== C_BINCL
4439 || isym
.n_sclass
== C_EINCL
)
4441 isym
.n_value
= flinfo
->line_filepos
;
4444 /* The value of a C_BSTAT symbol is the symbol table
4445 index of the containing csect. */
4446 else if (isym
.n_sclass
== C_BSTAT
)
4450 indx
= isym
.n_value
;
4451 if (indx
< obj_raw_syment_count (input_bfd
))
4455 symindx
= flinfo
->sym_indices
[indx
];
4459 isym
.n_value
= symindx
;
4462 else if (isym
.n_sclass
!= C_ESTAT
4463 && isym
.n_sclass
!= C_DECL
4464 && isym
.n_scnum
> 0)
4466 isym
.n_scnum
= (*csectpp
)->output_section
->target_index
;
4467 isym
.n_value
+= ((*csectpp
)->output_section
->vma
4468 + (*csectpp
)->output_offset
4472 /* Output the symbol. */
4473 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
4478 for (i
= 0; i
< isymp
->n_numaux
&& esym
< esym_end
; i
++)
4480 union internal_auxent aux
;
4482 bfd_coff_swap_aux_in (input_bfd
, (void *) esym
, isymp
->n_type
,
4483 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4486 if (isymp
->n_sclass
== C_FILE
)
4488 /* This is the file name (or some comment put in by
4489 the compiler). If it is long, we must put it in
4490 the string table. */
4491 if (aux
.x_file
.x_n
.x_zeroes
== 0
4492 && aux
.x_file
.x_n
.x_offset
!= 0)
4494 const char *filename
;
4497 BFD_ASSERT (aux
.x_file
.x_n
.x_offset
4498 >= STRING_SIZE_SIZE
);
4499 if (strings
== NULL
)
4501 strings
= _bfd_coff_read_string_table (input_bfd
);
4502 if (strings
== NULL
)
4505 if ((bfd_size_type
) aux
.x_file
.x_n
.x_offset
>= obj_coff_strings_len (input_bfd
))
4506 filename
= _("<corrupt>");
4508 filename
= strings
+ aux
.x_file
.x_n
.x_offset
;
4509 indx
= _bfd_stringtab_add (flinfo
->strtab
, filename
,
4511 if (indx
== (bfd_size_type
) -1)
4513 aux
.x_file
.x_n
.x_offset
= STRING_SIZE_SIZE
+ indx
;
4516 else if (CSECT_SYM_P (isymp
->n_sclass
)
4517 && i
+ 1 == isymp
->n_numaux
)
4520 /* We don't support type checking. I don't know if
4522 aux
.x_csect
.x_parmhash
= 0;
4523 /* I don't think anybody uses these fields, but we'd
4524 better clobber them just in case. */
4525 aux
.x_csect
.x_stab
= 0;
4526 aux
.x_csect
.x_snstab
= 0;
4528 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_LD
)
4532 indx
= aux
.x_csect
.x_scnlen
.l
;
4533 if (indx
< obj_raw_syment_count (input_bfd
))
4537 symindx
= flinfo
->sym_indices
[indx
];
4540 aux
.x_csect
.x_scnlen
.l
= 0;
4544 aux
.x_csect
.x_scnlen
.l
= symindx
;
4549 else if (isymp
->n_sclass
!= C_STAT
|| isymp
->n_type
!= T_NULL
)
4553 if (ISFCN (isymp
->n_type
)
4554 || ISTAG (isymp
->n_sclass
)
4555 || isymp
->n_sclass
== C_BLOCK
4556 || isymp
->n_sclass
== C_FCN
)
4558 indx
= aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
;
4560 && indx
< obj_raw_syment_count (input_bfd
))
4562 /* We look forward through the symbol for
4563 the index of the next symbol we are going
4564 to include. I don't know if this is
4566 while (flinfo
->sym_indices
[indx
] < 0
4567 && indx
< obj_raw_syment_count (input_bfd
))
4569 if (indx
>= obj_raw_syment_count (input_bfd
))
4570 indx
= output_index
;
4572 indx
= flinfo
->sym_indices
[indx
];
4573 aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= indx
;
4578 indx
= aux
.x_sym
.x_tagndx
.l
;
4579 if (indx
> 0 && indx
< obj_raw_syment_count (input_bfd
))
4583 symindx
= flinfo
->sym_indices
[indx
];
4585 aux
.x_sym
.x_tagndx
.l
= 0;
4587 aux
.x_sym
.x_tagndx
.l
= symindx
;
4592 /* Copy over the line numbers, unless we are stripping
4593 them. We do this on a symbol by symbol basis in
4594 order to more easily handle garbage collection. */
4595 if (CSECT_SYM_P (isymp
->n_sclass
)
4597 && isymp
->n_numaux
> 1
4598 && ISFCN (isymp
->n_type
)
4599 && aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
4601 if (*lineno_counts
== 0)
4602 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= 0;
4605 asection
*enclosing
;
4606 unsigned int enc_count
;
4607 bfd_signed_vma linoff
;
4608 struct internal_lineno lin
;
4615 /* Read in the enclosing section's line-number
4616 information, if we haven't already. */
4618 enclosing
= xcoff_section_data (abfd
, o
)->enclosing
;
4619 enc_count
= xcoff_section_data (abfd
, o
)->lineno_count
;
4620 if (oline
!= enclosing
)
4622 pos
= enclosing
->line_filepos
;
4623 amt
= linesz
* enc_count
;
4624 if (bfd_seek (input_bfd
, pos
, SEEK_SET
) != 0
4625 || (bfd_bread (flinfo
->linenos
, amt
, input_bfd
)
4631 /* Copy across the first entry, adjusting its
4633 linoff
= (aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
4634 - enclosing
->line_filepos
);
4635 linp
= flinfo
->linenos
+ linoff
;
4636 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4637 lin
.l_addr
.l_symndx
= *indexp
;
4638 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4640 /* Copy the other entries, adjusting their addresses. */
4641 linpend
= linp
+ *lineno_counts
* linesz
;
4642 offset
= (o
->output_section
->vma
4645 for (linp
+= linesz
; linp
< linpend
; linp
+= linesz
)
4647 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4648 lin
.l_addr
.l_paddr
+= offset
;
4649 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4652 /* Write out the entries we've just processed. */
4653 pos
= (o
->output_section
->line_filepos
4654 + o
->output_section
->lineno_count
* linesz
);
4655 amt
= linesz
* *lineno_counts
;
4656 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4657 || bfd_bwrite (flinfo
->linenos
+ linoff
,
4658 amt
, output_bfd
) != amt
)
4660 o
->output_section
->lineno_count
+= *lineno_counts
;
4662 /* Record the offset of the symbol's line numbers
4663 in the output file. */
4664 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= pos
;
4668 struct internal_syment
*iisp
, *iispend
;
4671 bfd_vma range_start
, range_end
;
4674 /* Update any C_BINCL or C_EINCL symbols
4675 that refer to a line number in the
4676 range we just output. */
4677 iisp
= flinfo
->internal_syms
;
4678 iispend
= iisp
+ obj_raw_syment_count (input_bfd
);
4679 iindp
= flinfo
->sym_indices
;
4680 oos
= flinfo
->outsyms
;
4681 range_start
= enclosing
->line_filepos
+ linoff
;
4682 range_end
= range_start
+ *lineno_counts
* linesz
;
4683 while (iisp
< iispend
)
4686 && (iisp
->n_sclass
== C_BINCL
4687 || iisp
->n_sclass
== C_EINCL
)
4688 && iisp
->n_value
>= range_start
4689 && iisp
->n_value
< range_end
)
4691 struct internal_syment iis
;
4693 bfd_coff_swap_sym_in (output_bfd
, oos
, &iis
);
4694 iis
.n_value
= (iisp
->n_value
4697 bfd_coff_swap_sym_out (output_bfd
,
4702 iiadd
= 1 + iisp
->n_numaux
;
4704 oos
+= iiadd
* osymesz
;
4712 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, isymp
->n_type
,
4713 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4724 lineno_counts
+= add
;
4728 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
4729 symbol will be the first symbol in the next input file. In the
4730 normal case, this will save us from writing out the C_FILE symbol
4732 if (flinfo
->last_file_index
!= -1
4733 && (bfd_size_type
) flinfo
->last_file_index
>= syment_base
)
4735 flinfo
->last_file
.n_value
= output_index
;
4736 bfd_coff_swap_sym_out (output_bfd
, (void *) &flinfo
->last_file
,
4737 (void *) (flinfo
->outsyms
4738 + ((flinfo
->last_file_index
- syment_base
)
4742 /* Write the modified symbols to the output file. */
4743 if (outsym
> flinfo
->outsyms
)
4745 file_ptr pos
= obj_sym_filepos (output_bfd
) + syment_base
* osymesz
;
4746 bfd_size_type amt
= outsym
- flinfo
->outsyms
;
4747 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4748 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
4751 BFD_ASSERT ((obj_raw_syment_count (output_bfd
)
4752 + (outsym
- flinfo
->outsyms
) / osymesz
)
4755 obj_raw_syment_count (output_bfd
) = output_index
;
4758 /* Don't let the linker relocation routines discard the symbols. */
4759 keep_syms
= obj_coff_keep_syms (input_bfd
);
4760 obj_coff_keep_syms (input_bfd
) = TRUE
;
4762 /* Relocate the contents of each section. */
4763 for (o
= input_bfd
->sections
; o
!= NULL
; o
= o
->next
)
4767 if (! o
->linker_mark
)
4768 /* This section was omitted from the link. */
4771 if ((o
->flags
& SEC_HAS_CONTENTS
) == 0
4773 || (o
->flags
& SEC_IN_MEMORY
) != 0)
4776 /* We have set filepos correctly for the sections we created to
4777 represent csects, so bfd_get_section_contents should work. */
4778 if (coff_section_data (input_bfd
, o
) != NULL
4779 && coff_section_data (input_bfd
, o
)->contents
!= NULL
)
4780 contents
= coff_section_data (input_bfd
, o
)->contents
;
4783 bfd_size_type sz
= o
->rawsize
? o
->rawsize
: o
->size
;
4784 if (!bfd_get_section_contents (input_bfd
, o
, flinfo
->contents
, 0, sz
))
4786 contents
= flinfo
->contents
;
4789 if ((o
->flags
& SEC_RELOC
) != 0)
4792 struct internal_reloc
*internal_relocs
;
4793 struct internal_reloc
*irel
;
4795 struct internal_reloc
*irelend
;
4796 struct xcoff_link_hash_entry
**rel_hash
;
4799 /* Read in the relocs. */
4800 target_index
= o
->output_section
->target_index
;
4801 internal_relocs
= (xcoff_read_internal_relocs
4802 (input_bfd
, o
, FALSE
, flinfo
->external_relocs
,
4804 (flinfo
->section_info
[target_index
].relocs
4805 + o
->output_section
->reloc_count
)));
4806 if (internal_relocs
== NULL
)
4809 /* Call processor specific code to relocate the section
4811 if (! bfd_coff_relocate_section (output_bfd
, flinfo
->info
,
4815 flinfo
->internal_syms
,
4816 xcoff_data (input_bfd
)->csects
))
4819 offset
= o
->output_section
->vma
+ o
->output_offset
- o
->vma
;
4820 irel
= internal_relocs
;
4821 irelend
= irel
+ o
->reloc_count
;
4822 rel_hash
= (flinfo
->section_info
[target_index
].rel_hashes
4823 + o
->output_section
->reloc_count
);
4824 for (; irel
< irelend
; irel
++, rel_hash
++)
4826 struct xcoff_link_hash_entry
*h
= NULL
;
4830 /* Adjust the reloc address and symbol index. */
4832 irel
->r_vaddr
+= offset
;
4834 r_symndx
= irel
->r_symndx
;
4839 h
= obj_xcoff_sym_hashes (input_bfd
)[r_symndx
];
4841 if (r_symndx
!= -1 && flinfo
->info
->strip
!= strip_all
)
4844 && h
->smclas
!= XMC_TD
4845 && (irel
->r_type
== R_TOC
4846 || irel
->r_type
== R_GL
4847 || irel
->r_type
== R_TCL
4848 || irel
->r_type
== R_TRL
4849 || irel
->r_type
== R_TRLA
))
4851 /* This is a TOC relative reloc with a symbol
4852 attached. The symbol should be the one which
4853 this reloc is for. We want to make this
4854 reloc against the TOC address of the symbol,
4855 not the symbol itself. */
4856 BFD_ASSERT (h
->toc_section
!= NULL
);
4857 BFD_ASSERT ((h
->flags
& XCOFF_SET_TOC
) == 0);
4858 if (h
->u
.toc_indx
!= -1)
4859 irel
->r_symndx
= h
->u
.toc_indx
;
4862 struct xcoff_toc_rel_hash
*n
;
4863 struct xcoff_link_section_info
*si
;
4867 n
= bfd_alloc (flinfo
->output_bfd
, amt
);
4870 si
= flinfo
->section_info
+ target_index
;
4871 n
->next
= si
->toc_rel_hashes
;
4874 si
->toc_rel_hashes
= n
;
4879 /* This is a global symbol. */
4881 irel
->r_symndx
= h
->indx
;
4884 /* This symbol is being written at the end
4885 of the file, and we do not yet know the
4886 symbol index. We save the pointer to the
4887 hash table entry in the rel_hash list.
4888 We set the indx field to -2 to indicate
4889 that this symbol must not be stripped. */
4898 indx
= flinfo
->sym_indices
[r_symndx
];
4902 struct internal_syment
*is
;
4904 /* Relocations against a TC0 TOC anchor are
4905 automatically transformed to be against
4906 the TOC anchor in the output file. */
4907 is
= flinfo
->internal_syms
+ r_symndx
;
4908 if (is
->n_sclass
== C_HIDEXT
4909 && is
->n_numaux
> 0)
4912 union internal_auxent aux
;
4916 obj_coff_external_syms (input_bfd
))
4917 + ((r_symndx
+ is
->n_numaux
)
4919 bfd_coff_swap_aux_in (input_bfd
, auxptr
,
4920 is
->n_type
, is
->n_sclass
,
4924 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_SD
4925 && aux
.x_csect
.x_smclas
== XMC_TC0
)
4926 indx
= flinfo
->toc_symindx
;
4931 irel
->r_symndx
= indx
;
4935 struct internal_syment
*is
;
4938 char buf
[SYMNMLEN
+ 1];
4940 /* This reloc is against a symbol we are
4941 stripping. It would be possible to handle
4942 this case, but I don't think it's worth it. */
4943 is
= flinfo
->internal_syms
+ r_symndx
;
4945 if (is
->n_sclass
!= C_DWARF
)
4947 name
= (_bfd_coff_internal_syment_name
4948 (input_bfd
, is
, buf
));
4953 (*flinfo
->info
->callbacks
->unattached_reloc
)
4954 (flinfo
->info
, name
,
4955 input_bfd
, o
, irel
->r_vaddr
);
4961 if ((o
->flags
& SEC_DEBUGGING
) == 0
4962 && xcoff_need_ldrel_p (flinfo
->info
, irel
, h
))
4969 sec
= xcoff_data (input_bfd
)->csects
[r_symndx
];
4971 sec
= xcoff_symbol_section (h
);
4972 if (!xcoff_create_ldrel (output_bfd
, flinfo
,
4973 o
->output_section
, input_bfd
,
4979 o
->output_section
->reloc_count
+= o
->reloc_count
;
4982 /* Write out the modified section contents. */
4983 if (! bfd_set_section_contents (output_bfd
, o
->output_section
,
4984 contents
, (file_ptr
) o
->output_offset
,
4989 obj_coff_keep_syms (input_bfd
) = keep_syms
;
4991 if (! flinfo
->info
->keep_memory
)
4993 if (! _bfd_coff_free_symbols (input_bfd
))
5000 obj_coff_keep_syms (input_bfd
) = keep_syms
;
5007 /* Sort relocs by VMA. This is called via qsort. */
5010 xcoff_sort_relocs (const void * p1
, const void * p2
)
5012 const struct internal_reloc
*r1
= (const struct internal_reloc
*) p1
;
5013 const struct internal_reloc
*r2
= (const struct internal_reloc
*) p2
;
5015 if (r1
->r_vaddr
> r2
->r_vaddr
)
5017 else if (r1
->r_vaddr
< r2
->r_vaddr
)
5023 /* Return true if section SEC is a TOC section. */
5025 static inline bfd_boolean
5026 xcoff_toc_section_p (asection
*sec
)
5031 if (name
[0] == '.' && name
[1] == 't')
5035 if (name
[3] == '0' && name
[4] == 0)
5040 if (name
[2] == 'd' && name
[3] == 0)
5046 /* See if the link requires a TOC (it usually does!). If so, find a
5047 good place to put the TOC anchor csect, and write out the associated
5051 xcoff_find_tc0 (bfd
*output_bfd
, struct xcoff_final_link_info
*flinfo
)
5053 bfd_vma toc_start
, toc_end
, start
, end
, best_address
;
5057 struct internal_syment irsym
;
5058 union internal_auxent iraux
;
5062 /* Set [TOC_START, TOC_END) to the range of the TOC. Record the
5063 index of a csect at the beginning of the TOC. */
5064 toc_start
= ~(bfd_vma
) 0;
5067 for (input_bfd
= flinfo
->info
->input_bfds
;
5069 input_bfd
= input_bfd
->link
.next
)
5070 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5071 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5073 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5074 if (toc_start
> start
)
5077 section_index
= sec
->output_section
->target_index
;
5080 end
= start
+ sec
->size
;
5085 /* There's no need for a TC0 symbol if we don't have a TOC. */
5086 if (toc_end
< toc_start
)
5088 xcoff_data (output_bfd
)->toc
= toc_start
;
5092 if (toc_end
- toc_start
< 0x8000)
5093 /* Every TOC csect can be accessed from TOC_START. */
5094 best_address
= toc_start
;
5097 /* Find the lowest TOC csect that is still within range of TOC_END. */
5098 best_address
= toc_end
;
5099 for (input_bfd
= flinfo
->info
->input_bfds
;
5101 input_bfd
= input_bfd
->link
.next
)
5102 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5103 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5105 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5106 if (start
< best_address
5107 && start
+ 0x8000 >= toc_end
)
5109 best_address
= start
;
5110 section_index
= sec
->output_section
->target_index
;
5114 /* Make sure that the start of the TOC is also within range. */
5115 if (best_address
> toc_start
+ 0x8000)
5118 (_("TOC overflow: %#" PRIx64
" > 0x10000; try -mminimal-toc "
5120 (uint64_t) (toc_end
- toc_start
));
5121 bfd_set_error (bfd_error_file_too_big
);
5126 /* Record the chosen TOC value. */
5127 flinfo
->toc_symindx
= obj_raw_syment_count (output_bfd
);
5128 xcoff_data (output_bfd
)->toc
= best_address
;
5129 xcoff_data (output_bfd
)->sntoc
= section_index
;
5131 /* Fill out the TC0 symbol. */
5132 if (!bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
, flinfo
->strtab
,
5135 irsym
.n_value
= best_address
;
5136 irsym
.n_scnum
= section_index
;
5137 irsym
.n_sclass
= C_HIDEXT
;
5138 irsym
.n_type
= T_NULL
;
5140 bfd_coff_swap_sym_out (output_bfd
, &irsym
, flinfo
->outsyms
);
5142 /* Fill out the auxillary csect information. */
5143 memset (&iraux
, 0, sizeof iraux
);
5144 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5145 iraux
.x_csect
.x_smclas
= XMC_TC0
;
5146 iraux
.x_csect
.x_scnlen
.l
= 0;
5147 bfd_coff_swap_aux_out (output_bfd
, &iraux
, T_NULL
, C_HIDEXT
, 0, 1,
5148 flinfo
->outsyms
+ bfd_coff_symesz (output_bfd
));
5150 /* Write the contents to the file. */
5151 pos
= obj_sym_filepos (output_bfd
);
5152 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5153 size
= 2 * bfd_coff_symesz (output_bfd
);
5154 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5155 || bfd_bwrite (flinfo
->outsyms
, size
, output_bfd
) != size
)
5157 obj_raw_syment_count (output_bfd
) += 2;
5162 /* Write out a non-XCOFF global symbol. */
5165 xcoff_write_global_symbol (struct bfd_hash_entry
*bh
, void * inf
)
5167 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) bh
;
5168 struct xcoff_final_link_info
*flinfo
= (struct xcoff_final_link_info
*) inf
;
5171 struct internal_syment isym
;
5172 union internal_auxent aux
;
5177 output_bfd
= flinfo
->output_bfd
;
5178 outsym
= flinfo
->outsyms
;
5180 if (h
->root
.type
== bfd_link_hash_warning
)
5182 h
= (struct xcoff_link_hash_entry
*) h
->root
.u
.i
.link
;
5183 if (h
->root
.type
== bfd_link_hash_new
)
5187 /* If this symbol was garbage collected, just skip it. */
5188 if (xcoff_hash_table (flinfo
->info
)->gc
5189 && (h
->flags
& XCOFF_MARK
) == 0)
5192 /* If we need a .loader section entry, write it out. */
5193 if (h
->ldsym
!= NULL
)
5195 struct internal_ldsym
*ldsym
;
5200 if (h
->root
.type
== bfd_link_hash_undefined
5201 || h
->root
.type
== bfd_link_hash_undefweak
)
5205 ldsym
->l_scnum
= N_UNDEF
;
5206 ldsym
->l_smtype
= XTY_ER
;
5207 impbfd
= h
->root
.u
.undef
.abfd
;
5210 else if (h
->root
.type
== bfd_link_hash_defined
5211 || h
->root
.type
== bfd_link_hash_defweak
)
5215 sec
= h
->root
.u
.def
.section
;
5216 ldsym
->l_value
= (sec
->output_section
->vma
5217 + sec
->output_offset
5218 + h
->root
.u
.def
.value
);
5219 ldsym
->l_scnum
= sec
->output_section
->target_index
;
5220 ldsym
->l_smtype
= XTY_SD
;
5221 impbfd
= sec
->owner
;
5227 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
5228 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5229 || (h
->flags
& XCOFF_IMPORT
) != 0)
5231 Import symbols are defined so the check above will make
5232 the l_smtype XTY_SD. But this is not correct, it should
5234 ldsym
->l_smtype
|= L_IMPORT
;
5236 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
5237 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5238 || (h
->flags
& XCOFF_EXPORT
) != 0)
5239 ldsym
->l_smtype
|= L_EXPORT
;
5241 if ((h
->flags
& XCOFF_ENTRY
) != 0)
5242 ldsym
->l_smtype
|= L_ENTRY
;
5244 if ((h
->flags
& XCOFF_RTINIT
) != 0)
5245 ldsym
->l_smtype
= XTY_SD
;
5247 ldsym
->l_smclas
= h
->smclas
;
5249 if (ldsym
->l_smtype
& L_IMPORT
)
5251 if ((h
->root
.type
== bfd_link_hash_defined
5252 || h
->root
.type
== bfd_link_hash_defweak
)
5253 && (h
->root
.u
.def
.value
!= 0))
5254 ldsym
->l_smclas
= XMC_XO
;
5256 else if ((h
->flags
& (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
)) ==
5257 (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
))
5258 ldsym
->l_smclas
= XMC_SV3264
;
5260 else if (h
->flags
& XCOFF_SYSCALL32
)
5261 ldsym
->l_smclas
= XMC_SV
;
5263 else if (h
->flags
& XCOFF_SYSCALL64
)
5264 ldsym
->l_smclas
= XMC_SV64
;
5267 if (ldsym
->l_ifile
== -(bfd_size_type
) 1)
5271 else if (ldsym
->l_ifile
== 0)
5273 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
5275 else if (impbfd
== NULL
)
5279 BFD_ASSERT (impbfd
->xvec
== output_bfd
->xvec
);
5280 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
5286 BFD_ASSERT (h
->ldindx
>= 0);
5288 bfd_xcoff_swap_ldsym_out (output_bfd
, ldsym
,
5291 * bfd_xcoff_ldsymsz(flinfo
->output_bfd
)));
5295 /* If this symbol needs global linkage code, write it out. */
5296 if (h
->root
.type
== bfd_link_hash_defined
5297 && (h
->root
.u
.def
.section
5298 == xcoff_hash_table (flinfo
->info
)->linkage_section
))
5304 p
= h
->root
.u
.def
.section
->contents
+ h
->root
.u
.def
.value
;
5306 /* The first instruction in the global linkage code loads a
5307 specific TOC element. */
5308 tocoff
= (h
->descriptor
->toc_section
->output_section
->vma
5309 + h
->descriptor
->toc_section
->output_offset
5310 - xcoff_data (output_bfd
)->toc
);
5312 if ((h
->descriptor
->flags
& XCOFF_SET_TOC
) != 0)
5313 tocoff
+= h
->descriptor
->u
.toc_offset
;
5315 /* The first instruction in the glink code needs to be
5316 cooked to hold the correct offset in the toc. The
5317 rest are just output raw. */
5318 bfd_put_32 (output_bfd
,
5319 bfd_xcoff_glink_code(output_bfd
, 0) | (tocoff
& 0xffff), p
);
5321 /* Start with i == 1 to get past the first instruction done above
5322 The /4 is because the glink code is in bytes and we are going
5324 for (i
= 1; i
< bfd_xcoff_glink_code_size(output_bfd
) / 4; i
++)
5325 bfd_put_32 (output_bfd
,
5326 (bfd_vma
) bfd_xcoff_glink_code(output_bfd
, i
),
5330 /* If we created a TOC entry for this symbol, write out the required
5332 if ((h
->flags
& XCOFF_SET_TOC
) != 0)
5337 struct internal_reloc
*irel
;
5338 struct internal_syment irsym
;
5339 union internal_auxent iraux
;
5341 tocsec
= h
->toc_section
;
5342 osec
= tocsec
->output_section
;
5343 oindx
= osec
->target_index
;
5344 irel
= flinfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5345 irel
->r_vaddr
= (osec
->vma
5346 + tocsec
->output_offset
5350 irel
->r_symndx
= h
->indx
;
5354 irel
->r_symndx
= obj_raw_syment_count (output_bfd
);
5357 BFD_ASSERT (h
->ldindx
>= 0);
5359 /* Initialize the aux union here instead of closer to when it is
5360 written out below because the length of the csect depends on
5361 whether the output is 32 or 64 bit. */
5362 memset (&iraux
, 0, sizeof iraux
);
5363 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5364 /* iraux.x_csect.x_scnlen.l = 4 or 8, see below. */
5365 iraux
.x_csect
.x_smclas
= XMC_TC
;
5367 /* 32 bit uses a 32 bit R_POS to do the relocations
5368 64 bit uses a 64 bit R_POS to do the relocations
5370 Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit
5372 Which one is determined by the backend. */
5373 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5376 iraux
.x_csect
.x_scnlen
.l
= 8;
5378 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5381 iraux
.x_csect
.x_scnlen
.l
= 4;
5386 irel
->r_type
= R_POS
;
5387 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5388 ++osec
->reloc_count
;
5390 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5391 output_bfd
, irel
, NULL
, h
))
5394 /* We need to emit a symbol to define a csect which holds
5396 if (flinfo
->info
->strip
!= strip_all
)
5398 result
= bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
,
5400 &irsym
, h
->root
.root
.string
);
5404 irsym
.n_value
= irel
->r_vaddr
;
5405 irsym
.n_scnum
= osec
->target_index
;
5406 irsym
.n_sclass
= C_HIDEXT
;
5407 irsym
.n_type
= T_NULL
;
5410 bfd_coff_swap_sym_out (output_bfd
, (void *) &irsym
, (void *) outsym
);
5411 outsym
+= bfd_coff_symesz (output_bfd
);
5413 /* Note : iraux is initialized above. */
5414 bfd_coff_swap_aux_out (output_bfd
, (void *) &iraux
, T_NULL
, C_HIDEXT
,
5415 0, 1, (void *) outsym
);
5416 outsym
+= bfd_coff_auxesz (output_bfd
);
5420 /* We aren't going to write out the symbols below, so we
5421 need to write them out now. */
5422 pos
= obj_sym_filepos (output_bfd
);
5423 pos
+= (obj_raw_syment_count (output_bfd
)
5424 * bfd_coff_symesz (output_bfd
));
5425 amt
= outsym
- flinfo
->outsyms
;
5426 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5427 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
5429 obj_raw_syment_count (output_bfd
) +=
5430 (outsym
- flinfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5432 outsym
= flinfo
->outsyms
;
5437 /* If this symbol is a specially defined function descriptor, write
5438 it out. The first word is the address of the function code
5439 itself, the second word is the address of the TOC, and the third
5443 The addresses for the 32 bit will take 4 bytes and the addresses
5444 for 64 bit will take 8 bytes. Similar for the relocs. This type
5445 of logic was also done above to create a TOC entry in
5446 xcoff_write_global_symbol. */
5447 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
5448 && h
->root
.type
== bfd_link_hash_defined
5449 && (h
->root
.u
.def
.section
5450 == xcoff_hash_table (flinfo
->info
)->descriptor_section
))
5456 struct xcoff_link_hash_entry
*hentry
;
5458 struct internal_reloc
*irel
;
5460 unsigned int reloc_size
, byte_size
;
5462 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5467 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5475 sec
= h
->root
.u
.def
.section
;
5476 osec
= sec
->output_section
;
5477 oindx
= osec
->target_index
;
5478 p
= sec
->contents
+ h
->root
.u
.def
.value
;
5480 hentry
= h
->descriptor
;
5481 BFD_ASSERT (hentry
!= NULL
5482 && (hentry
->root
.type
== bfd_link_hash_defined
5483 || hentry
->root
.type
== bfd_link_hash_defweak
));
5484 esec
= hentry
->root
.u
.def
.section
;
5486 irel
= flinfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5487 irel
->r_vaddr
= (osec
->vma
5488 + sec
->output_offset
5489 + h
->root
.u
.def
.value
);
5490 irel
->r_symndx
= esec
->output_section
->target_index
;
5491 irel
->r_type
= R_POS
;
5492 irel
->r_size
= reloc_size
;
5493 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5494 ++osec
->reloc_count
;
5496 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5497 output_bfd
, irel
, esec
, NULL
))
5500 /* There are three items to write out,
5501 the address of the code
5502 the address of the toc anchor
5503 the environment pointer.
5504 We are ignoring the environment pointer. So set it to zero. */
5505 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5507 bfd_put_64 (output_bfd
,
5508 (esec
->output_section
->vma
+ esec
->output_offset
5509 + hentry
->root
.u
.def
.value
),
5511 bfd_put_64 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 8);
5512 bfd_put_64 (output_bfd
, (bfd_vma
) 0, p
+ 16);
5517 This logic was already called above so the error case where
5518 the backend is neither has already been checked. */
5519 bfd_put_32 (output_bfd
,
5520 (esec
->output_section
->vma
+ esec
->output_offset
5521 + hentry
->root
.u
.def
.value
),
5523 bfd_put_32 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 4);
5524 bfd_put_32 (output_bfd
, (bfd_vma
) 0, p
+ 8);
5527 tsec
= coff_section_from_bfd_index (output_bfd
,
5528 xcoff_data (output_bfd
)->sntoc
);
5531 irel
->r_vaddr
= (osec
->vma
5532 + sec
->output_offset
5533 + h
->root
.u
.def
.value
5535 irel
->r_symndx
= tsec
->output_section
->target_index
;
5536 irel
->r_type
= R_POS
;
5537 irel
->r_size
= reloc_size
;
5538 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5539 ++osec
->reloc_count
;
5541 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5542 output_bfd
, irel
, tsec
, NULL
))
5546 if (h
->indx
>= 0 || flinfo
->info
->strip
== strip_all
)
5548 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5553 && (flinfo
->info
->strip
== strip_all
5554 || (flinfo
->info
->strip
== strip_some
5555 && bfd_hash_lookup (flinfo
->info
->keep_hash
, h
->root
.root
.string
,
5556 FALSE
, FALSE
) == NULL
)))
5558 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5563 && (h
->flags
& (XCOFF_REF_REGULAR
| XCOFF_DEF_REGULAR
)) == 0)
5565 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5569 memset (&aux
, 0, sizeof aux
);
5571 h
->indx
= obj_raw_syment_count (output_bfd
);
5573 result
= bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
, flinfo
->strtab
,
5574 &isym
, h
->root
.root
.string
);
5578 if (h
->root
.type
== bfd_link_hash_undefined
5579 || h
->root
.type
== bfd_link_hash_undefweak
)
5582 isym
.n_scnum
= N_UNDEF
;
5583 if (h
->root
.type
== bfd_link_hash_undefweak
5584 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5585 isym
.n_sclass
= C_WEAKEXT
;
5587 isym
.n_sclass
= C_EXT
;
5588 aux
.x_csect
.x_smtyp
= XTY_ER
;
5590 else if ((h
->root
.type
== bfd_link_hash_defined
5591 || h
->root
.type
== bfd_link_hash_defweak
)
5592 && h
->smclas
== XMC_XO
)
5594 BFD_ASSERT (bfd_is_abs_symbol (&h
->root
));
5595 isym
.n_value
= h
->root
.u
.def
.value
;
5596 isym
.n_scnum
= N_UNDEF
;
5597 if (h
->root
.type
== bfd_link_hash_defweak
5598 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5599 isym
.n_sclass
= C_WEAKEXT
;
5601 isym
.n_sclass
= C_EXT
;
5602 aux
.x_csect
.x_smtyp
= XTY_ER
;
5604 else if (h
->root
.type
== bfd_link_hash_defined
5605 || h
->root
.type
== bfd_link_hash_defweak
)
5607 struct xcoff_link_size_list
*l
;
5609 isym
.n_value
= (h
->root
.u
.def
.section
->output_section
->vma
5610 + h
->root
.u
.def
.section
->output_offset
5611 + h
->root
.u
.def
.value
);
5612 if (bfd_is_abs_section (h
->root
.u
.def
.section
->output_section
))
5613 isym
.n_scnum
= N_ABS
;
5615 isym
.n_scnum
= h
->root
.u
.def
.section
->output_section
->target_index
;
5616 isym
.n_sclass
= C_HIDEXT
;
5617 aux
.x_csect
.x_smtyp
= XTY_SD
;
5619 if ((h
->flags
& XCOFF_HAS_SIZE
) != 0)
5621 for (l
= xcoff_hash_table (flinfo
->info
)->size_list
;
5627 aux
.x_csect
.x_scnlen
.l
= l
->size
;
5633 else if (h
->root
.type
== bfd_link_hash_common
)
5635 isym
.n_value
= (h
->root
.u
.c
.p
->section
->output_section
->vma
5636 + h
->root
.u
.c
.p
->section
->output_offset
);
5637 isym
.n_scnum
= h
->root
.u
.c
.p
->section
->output_section
->target_index
;
5638 isym
.n_sclass
= C_EXT
;
5639 aux
.x_csect
.x_smtyp
= XTY_CM
;
5640 aux
.x_csect
.x_scnlen
.l
= h
->root
.u
.c
.size
;
5645 isym
.n_type
= T_NULL
;
5648 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5649 outsym
+= bfd_coff_symesz (output_bfd
);
5651 aux
.x_csect
.x_smclas
= h
->smclas
;
5652 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, isym
.n_sclass
, 0, 1,
5654 outsym
+= bfd_coff_auxesz (output_bfd
);
5656 if ((h
->root
.type
== bfd_link_hash_defined
5657 || h
->root
.type
== bfd_link_hash_defweak
)
5658 && h
->smclas
!= XMC_XO
)
5660 /* We just output an SD symbol. Now output an LD symbol. */
5663 if (h
->root
.type
== bfd_link_hash_defweak
5664 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5665 isym
.n_sclass
= C_WEAKEXT
;
5667 isym
.n_sclass
= C_EXT
;
5668 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5669 outsym
+= bfd_coff_symesz (output_bfd
);
5671 aux
.x_csect
.x_smtyp
= XTY_LD
;
5672 aux
.x_csect
.x_scnlen
.l
= obj_raw_syment_count (output_bfd
);
5673 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, C_EXT
, 0, 1,
5675 outsym
+= bfd_coff_auxesz (output_bfd
);
5678 pos
= obj_sym_filepos (output_bfd
);
5679 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5680 amt
= outsym
- flinfo
->outsyms
;
5681 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5682 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
5684 obj_raw_syment_count (output_bfd
) +=
5685 (outsym
- flinfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5690 /* Handle a link order which is supposed to generate a reloc. */
5693 xcoff_reloc_link_order (bfd
*output_bfd
,
5694 struct xcoff_final_link_info
*flinfo
,
5695 asection
*output_section
,
5696 struct bfd_link_order
*link_order
)
5698 reloc_howto_type
*howto
;
5699 struct xcoff_link_hash_entry
*h
;
5703 struct internal_reloc
*irel
;
5704 struct xcoff_link_hash_entry
**rel_hash_ptr
;
5706 if (link_order
->type
== bfd_section_reloc_link_order
)
5707 /* We need to somehow locate a symbol in the right section. The
5708 symbol must either have a value of zero, or we must adjust
5709 the addend by the value of the symbol. FIXME: Write this
5710 when we need it. The old linker couldn't handle this anyhow. */
5713 howto
= bfd_reloc_type_lookup (output_bfd
, link_order
->u
.reloc
.p
->reloc
);
5716 bfd_set_error (bfd_error_bad_value
);
5720 h
= ((struct xcoff_link_hash_entry
*)
5721 bfd_wrapped_link_hash_lookup (output_bfd
, flinfo
->info
,
5722 link_order
->u
.reloc
.p
->u
.name
,
5723 FALSE
, FALSE
, TRUE
));
5726 (*flinfo
->info
->callbacks
->unattached_reloc
)
5727 (flinfo
->info
, link_order
->u
.reloc
.p
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
5731 hsec
= xcoff_symbol_section (h
);
5732 if (h
->root
.type
== bfd_link_hash_defined
5733 || h
->root
.type
== bfd_link_hash_defweak
)
5734 hval
= h
->root
.u
.def
.value
;
5738 addend
= link_order
->u
.reloc
.p
->addend
;
5740 addend
+= (hsec
->output_section
->vma
5741 + hsec
->output_offset
5748 bfd_reloc_status_type rstat
;
5751 size
= bfd_get_reloc_size (howto
);
5752 buf
= bfd_zmalloc (size
);
5753 if (buf
== NULL
&& size
!= 0)
5756 rstat
= _bfd_relocate_contents (howto
, output_bfd
, addend
, buf
);
5762 case bfd_reloc_outofrange
:
5764 case bfd_reloc_overflow
:
5765 (*flinfo
->info
->callbacks
->reloc_overflow
)
5766 (flinfo
->info
, NULL
, link_order
->u
.reloc
.p
->u
.name
,
5767 howto
->name
, addend
, NULL
, NULL
, (bfd_vma
) 0);
5770 ok
= bfd_set_section_contents (output_bfd
, output_section
, (void *) buf
,
5771 (file_ptr
) link_order
->offset
, size
);
5777 /* Store the reloc information in the right place. It will get
5778 swapped and written out at the end of the final_link routine. */
5779 irel
= (flinfo
->section_info
[output_section
->target_index
].relocs
5780 + output_section
->reloc_count
);
5781 rel_hash_ptr
= (flinfo
->section_info
[output_section
->target_index
].rel_hashes
5782 + output_section
->reloc_count
);
5784 memset (irel
, 0, sizeof (struct internal_reloc
));
5785 *rel_hash_ptr
= NULL
;
5787 irel
->r_vaddr
= output_section
->vma
+ link_order
->offset
;
5790 irel
->r_symndx
= h
->indx
;
5793 /* Set the index to -2 to force this symbol to get written out. */
5799 irel
->r_type
= howto
->type
;
5800 irel
->r_size
= howto
->bitsize
- 1;
5801 if (howto
->complain_on_overflow
== complain_overflow_signed
)
5802 irel
->r_size
|= 0x80;
5804 ++output_section
->reloc_count
;
5806 /* Now output the reloc to the .loader section. */
5807 if (xcoff_hash_table (flinfo
->info
)->loader_section
)
5809 if (!xcoff_create_ldrel (output_bfd
, flinfo
, output_section
,
5810 output_bfd
, irel
, hsec
, h
))
5817 /* Do the final link step. */
5820 _bfd_xcoff_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5822 bfd_size_type symesz
;
5823 struct xcoff_final_link_info flinfo
;
5825 struct bfd_link_order
*p
;
5826 bfd_size_type max_contents_size
;
5827 bfd_size_type max_sym_count
;
5828 bfd_size_type max_lineno_count
;
5829 bfd_size_type max_reloc_count
;
5830 bfd_size_type max_output_reloc_count
;
5831 file_ptr rel_filepos
;
5833 file_ptr line_filepos
;
5834 unsigned int linesz
;
5836 bfd_byte
*external_relocs
= NULL
;
5837 char strbuf
[STRING_SIZE_SIZE
];
5841 if (bfd_link_pic (info
))
5842 abfd
->flags
|= DYNAMIC
;
5844 symesz
= bfd_coff_symesz (abfd
);
5847 flinfo
.output_bfd
= abfd
;
5848 flinfo
.strtab
= NULL
;
5849 flinfo
.section_info
= NULL
;
5850 flinfo
.last_file_index
= -1;
5851 flinfo
.toc_symindx
= -1;
5852 flinfo
.internal_syms
= NULL
;
5853 flinfo
.sym_indices
= NULL
;
5854 flinfo
.outsyms
= NULL
;
5855 flinfo
.linenos
= NULL
;
5856 flinfo
.contents
= NULL
;
5857 flinfo
.external_relocs
= NULL
;
5859 if (xcoff_hash_table (info
)->loader_section
)
5861 flinfo
.ldsym
= (xcoff_hash_table (info
)->loader_section
->contents
5862 + bfd_xcoff_ldhdrsz (abfd
));
5863 flinfo
.ldrel
= (xcoff_hash_table (info
)->loader_section
->contents
5864 + bfd_xcoff_ldhdrsz (abfd
)
5865 + (xcoff_hash_table (info
)->ldhdr
.l_nsyms
5866 * bfd_xcoff_ldsymsz (abfd
)));
5870 flinfo
.ldsym
= NULL
;
5871 flinfo
.ldrel
= NULL
;
5874 xcoff_data (abfd
)->coff
.link_info
= info
;
5876 flinfo
.strtab
= _bfd_stringtab_init ();
5877 if (flinfo
.strtab
== NULL
)
5880 /* Count the relocation entries required for the output file.
5881 (We've already counted the line numbers.) Determine a few
5883 max_contents_size
= 0;
5884 max_lineno_count
= 0;
5885 max_reloc_count
= 0;
5886 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5889 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5891 if (p
->type
== bfd_indirect_link_order
)
5895 sec
= p
->u
.indirect
.section
;
5897 /* Mark all sections which are to be included in the
5898 link. This will normally be every section. We need
5899 to do this so that we can identify any sections which
5900 the linker has decided to not include. */
5901 sec
->linker_mark
= TRUE
;
5903 o
->reloc_count
+= sec
->reloc_count
;
5905 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
5907 if (sec
->rawsize
> max_contents_size
)
5908 max_contents_size
= sec
->rawsize
;
5909 if (sec
->size
> max_contents_size
)
5910 max_contents_size
= sec
->size
;
5912 if (coff_section_data (sec
->owner
, sec
) != NULL
5913 && xcoff_section_data (sec
->owner
, sec
) != NULL
5914 && (xcoff_section_data (sec
->owner
, sec
)->lineno_count
5915 > max_lineno_count
))
5917 xcoff_section_data (sec
->owner
, sec
)->lineno_count
;
5918 if (sec
->reloc_count
> max_reloc_count
)
5919 max_reloc_count
= sec
->reloc_count
;
5921 else if (p
->type
== bfd_section_reloc_link_order
5922 || p
->type
== bfd_symbol_reloc_link_order
)
5927 /* Compute the file positions for all the sections. */
5928 if (abfd
->output_has_begun
)
5930 if (xcoff_hash_table (info
)->file_align
!= 0)
5937 file_align
= xcoff_hash_table (info
)->file_align
;
5938 if (file_align
!= 0)
5940 bfd_boolean saw_contents
;
5944 /* Insert .pad sections before every section which has
5945 contents and is loaded, if it is preceded by some other
5946 section which has contents and is loaded. */
5947 saw_contents
= TRUE
;
5948 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5950 if (strcmp (o
->name
, ".pad") == 0)
5951 saw_contents
= FALSE
;
5952 else if ((o
->flags
& SEC_HAS_CONTENTS
) != 0
5953 && (o
->flags
& SEC_LOAD
) != 0)
5956 saw_contents
= TRUE
;
5961 /* Create a pad section and place it before the section
5962 that needs padding. This requires unlinking and
5963 relinking the bfd's section list. */
5965 n
= bfd_make_section_anyway_with_flags (abfd
, ".pad",
5967 n
->alignment_power
= 0;
5969 bfd_section_list_remove (abfd
, n
);
5970 bfd_section_list_insert_before (abfd
, o
, n
);
5971 saw_contents
= FALSE
;
5976 /* Reset the section indices after inserting the new
5979 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5982 o
->target_index
= indx
;
5984 BFD_ASSERT ((unsigned int) indx
== abfd
->section_count
);
5986 /* Work out appropriate sizes for the .pad sections to force
5987 each section to land on a page boundary. This bit of
5988 code knows what compute_section_file_positions is going
5990 sofar
= bfd_coff_filhsz (abfd
);
5991 sofar
+= bfd_coff_aoutsz (abfd
);
5992 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
5993 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5994 if ((bfd_xcoff_is_reloc_count_overflow
5995 (abfd
, (bfd_vma
) o
->reloc_count
))
5996 || (bfd_xcoff_is_lineno_count_overflow
5997 (abfd
, (bfd_vma
) o
->lineno_count
)))
5998 /* 64 does not overflow, need to check if 32 does */
5999 sofar
+= bfd_coff_scnhsz (abfd
);
6001 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6003 if (strcmp (o
->name
, ".pad") == 0)
6007 BFD_ASSERT (o
->size
== 0);
6008 pageoff
= sofar
& (file_align
- 1);
6011 o
->size
= file_align
- pageoff
;
6012 sofar
+= file_align
- pageoff
;
6013 o
->flags
|= SEC_HAS_CONTENTS
;
6018 if ((o
->flags
& SEC_HAS_CONTENTS
) != 0)
6019 sofar
+= BFD_ALIGN (o
->size
,
6020 1 << o
->alignment_power
);
6025 if (! bfd_coff_compute_section_file_positions (abfd
))
6029 /* Allocate space for the pointers we need to keep for the relocs. */
6033 /* We use section_count + 1, rather than section_count, because
6034 the target_index fields are 1 based. */
6035 amt
= abfd
->section_count
+ 1;
6036 amt
*= sizeof (struct xcoff_link_section_info
);
6037 flinfo
.section_info
= bfd_malloc (amt
);
6038 if (flinfo
.section_info
== NULL
)
6040 for (i
= 0; i
<= abfd
->section_count
; i
++)
6042 flinfo
.section_info
[i
].relocs
= NULL
;
6043 flinfo
.section_info
[i
].rel_hashes
= NULL
;
6044 flinfo
.section_info
[i
].toc_rel_hashes
= NULL
;
6048 /* Set the file positions for the relocs. */
6049 rel_filepos
= obj_relocbase (abfd
);
6050 relsz
= bfd_coff_relsz (abfd
);
6051 max_output_reloc_count
= 0;
6052 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6054 if (o
->reloc_count
== 0)
6058 /* A stripped file has no relocs. However, we still
6059 allocate the buffers, so that later code doesn't have to
6060 worry about whether we are stripping or not. */
6061 if (info
->strip
== strip_all
)
6065 o
->flags
|= SEC_RELOC
;
6066 o
->rel_filepos
= rel_filepos
;
6067 rel_filepos
+= o
->reloc_count
* relsz
;
6070 /* We don't know the indices of global symbols until we have
6071 written out all the local symbols. For each section in
6072 the output file, we keep an array of pointers to hash
6073 table entries. Each entry in the array corresponds to a
6074 reloc. When we find a reloc against a global symbol, we
6075 set the corresponding entry in this array so that we can
6076 fix up the symbol index after we have written out all the
6079 Because of this problem, we also keep the relocs in
6080 memory until the end of the link. This wastes memory.
6081 We could backpatch the file later, I suppose, although it
6083 amt
= o
->reloc_count
;
6084 amt
*= sizeof (struct internal_reloc
);
6085 flinfo
.section_info
[o
->target_index
].relocs
= bfd_malloc (amt
);
6087 amt
= o
->reloc_count
;
6088 amt
*= sizeof (struct xcoff_link_hash_entry
*);
6089 flinfo
.section_info
[o
->target_index
].rel_hashes
= bfd_malloc (amt
);
6091 if (flinfo
.section_info
[o
->target_index
].relocs
== NULL
6092 || flinfo
.section_info
[o
->target_index
].rel_hashes
== NULL
)
6095 if (o
->reloc_count
> max_output_reloc_count
)
6096 max_output_reloc_count
= o
->reloc_count
;
6100 /* We now know the size of the relocs, so we can determine the file
6101 positions of the line numbers. */
6102 line_filepos
= rel_filepos
;
6103 flinfo
.line_filepos
= line_filepos
;
6104 linesz
= bfd_coff_linesz (abfd
);
6105 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6107 if (o
->lineno_count
== 0)
6108 o
->line_filepos
= 0;
6111 o
->line_filepos
= line_filepos
;
6112 line_filepos
+= o
->lineno_count
* linesz
;
6115 /* Reset the reloc and lineno counts, so that we can use them to
6116 count the number of entries we have output so far. */
6118 o
->lineno_count
= 0;
6121 obj_sym_filepos (abfd
) = line_filepos
;
6123 /* Figure out the largest number of symbols in an input BFD. Take
6124 the opportunity to clear the output_has_begun fields of all the
6125 input BFD's. We want at least 6 symbols, since that is the
6126 number which xcoff_write_global_symbol may need. */
6128 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
6132 sub
->output_has_begun
= FALSE
;
6133 sz
= obj_raw_syment_count (sub
);
6134 if (sz
> max_sym_count
)
6138 /* Allocate some buffers used while linking. */
6139 amt
= max_sym_count
* sizeof (struct internal_syment
);
6140 flinfo
.internal_syms
= bfd_malloc (amt
);
6142 amt
= max_sym_count
* sizeof (long);
6143 flinfo
.sym_indices
= bfd_malloc (amt
);
6145 amt
= (max_sym_count
+ 1) * symesz
;
6146 flinfo
.outsyms
= bfd_malloc (amt
);
6148 amt
= max_lineno_count
* bfd_coff_linesz (abfd
);
6149 flinfo
.linenos
= bfd_malloc (amt
);
6151 amt
= max_contents_size
;
6152 flinfo
.contents
= bfd_malloc (amt
);
6154 amt
= max_reloc_count
* relsz
;
6155 flinfo
.external_relocs
= bfd_malloc (amt
);
6157 if ((flinfo
.internal_syms
== NULL
&& max_sym_count
> 0)
6158 || (flinfo
.sym_indices
== NULL
&& max_sym_count
> 0)
6159 || flinfo
.outsyms
== NULL
6160 || (flinfo
.linenos
== NULL
&& max_lineno_count
> 0)
6161 || (flinfo
.contents
== NULL
&& max_contents_size
> 0)
6162 || (flinfo
.external_relocs
== NULL
&& max_reloc_count
> 0))
6165 obj_raw_syment_count (abfd
) = 0;
6167 /* Find a TOC symbol, if we need one. */
6168 if (!xcoff_find_tc0 (abfd
, &flinfo
))
6171 /* We now know the position of everything in the file, except that
6172 we don't know the size of the symbol table and therefore we don't
6173 know where the string table starts. We just build the string
6174 table in memory as we go along. We process all the relocations
6175 for a single input file at once. */
6176 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6178 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
6180 if (p
->type
== bfd_indirect_link_order
6181 && p
->u
.indirect
.section
->owner
->xvec
== abfd
->xvec
)
6183 sub
= p
->u
.indirect
.section
->owner
;
6184 if (! sub
->output_has_begun
)
6186 if (! xcoff_link_input_bfd (&flinfo
, sub
))
6188 sub
->output_has_begun
= TRUE
;
6191 else if (p
->type
== bfd_section_reloc_link_order
6192 || p
->type
== bfd_symbol_reloc_link_order
)
6194 if (! xcoff_reloc_link_order (abfd
, &flinfo
, o
, p
))
6199 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
6205 /* Free up the buffers used by xcoff_link_input_bfd. */
6206 free (flinfo
.internal_syms
);
6207 flinfo
.internal_syms
= NULL
;
6208 free (flinfo
.sym_indices
);
6209 flinfo
.sym_indices
= NULL
;
6210 free (flinfo
.linenos
);
6211 flinfo
.linenos
= NULL
;
6212 free (flinfo
.contents
);
6213 flinfo
.contents
= NULL
;
6214 free (flinfo
.external_relocs
);
6215 flinfo
.external_relocs
= NULL
;
6217 /* The value of the last C_FILE symbol is supposed to be -1. Write
6219 if (flinfo
.last_file_index
!= -1)
6221 flinfo
.last_file
.n_value
= -(bfd_vma
) 1;
6222 bfd_coff_swap_sym_out (abfd
, (void *) &flinfo
.last_file
,
6223 (void *) flinfo
.outsyms
);
6224 pos
= obj_sym_filepos (abfd
) + flinfo
.last_file_index
* symesz
;
6225 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
6226 || bfd_bwrite (flinfo
.outsyms
, symesz
, abfd
) != symesz
)
6230 /* Write out all the global symbols which do not come from XCOFF
6232 bfd_hash_traverse (&info
->hash
->table
, xcoff_write_global_symbol
, &flinfo
);
6234 free (flinfo
.outsyms
);
6235 flinfo
.outsyms
= NULL
;
6237 /* Now that we have written out all the global symbols, we know the
6238 symbol indices to use for relocs against them, and we can finally
6239 write out the relocs. */
6240 amt
= max_output_reloc_count
* relsz
;
6241 external_relocs
= bfd_malloc (amt
);
6242 if (external_relocs
== NULL
&& max_output_reloc_count
!= 0)
6245 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6247 struct internal_reloc
*irel
;
6248 struct internal_reloc
*irelend
;
6249 struct xcoff_link_hash_entry
**rel_hash
;
6250 struct xcoff_toc_rel_hash
*toc_rel_hash
;
6252 bfd_size_type rel_size
;
6254 /* A stripped file has no relocs. */
6255 if (info
->strip
== strip_all
)
6261 if (o
->reloc_count
== 0)
6264 irel
= flinfo
.section_info
[o
->target_index
].relocs
;
6265 irelend
= irel
+ o
->reloc_count
;
6266 rel_hash
= flinfo
.section_info
[o
->target_index
].rel_hashes
;
6267 for (; irel
< irelend
; irel
++, rel_hash
++)
6269 if (*rel_hash
!= NULL
)
6271 if ((*rel_hash
)->indx
< 0)
6273 (*info
->callbacks
->unattached_reloc
)
6274 (info
, (*rel_hash
)->root
.root
.string
,
6275 NULL
, o
, irel
->r_vaddr
);
6276 (*rel_hash
)->indx
= 0;
6278 irel
->r_symndx
= (*rel_hash
)->indx
;
6282 for (toc_rel_hash
= flinfo
.section_info
[o
->target_index
].toc_rel_hashes
;
6283 toc_rel_hash
!= NULL
;
6284 toc_rel_hash
= toc_rel_hash
->next
)
6286 if (toc_rel_hash
->h
->u
.toc_indx
< 0)
6288 (*info
->callbacks
->unattached_reloc
)
6289 (info
, toc_rel_hash
->h
->root
.root
.string
,
6290 NULL
, o
, toc_rel_hash
->rel
->r_vaddr
);
6291 toc_rel_hash
->h
->u
.toc_indx
= 0;
6293 toc_rel_hash
->rel
->r_symndx
= toc_rel_hash
->h
->u
.toc_indx
;
6296 /* XCOFF requires that the relocs be sorted by address. We tend
6297 to produce them in the order in which their containing csects
6298 appear in the symbol table, which is not necessarily by
6299 address. So we sort them here. There may be a better way to
6301 qsort ((void *) flinfo
.section_info
[o
->target_index
].relocs
,
6302 o
->reloc_count
, sizeof (struct internal_reloc
),
6305 irel
= flinfo
.section_info
[o
->target_index
].relocs
;
6306 irelend
= irel
+ o
->reloc_count
;
6307 erel
= external_relocs
;
6308 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
6309 bfd_coff_swap_reloc_out (abfd
, (void *) irel
, (void *) erel
);
6311 rel_size
= relsz
* o
->reloc_count
;
6312 if (bfd_seek (abfd
, o
->rel_filepos
, SEEK_SET
) != 0
6313 || bfd_bwrite ((void *) external_relocs
, rel_size
, abfd
) != rel_size
)
6317 free (external_relocs
);
6318 external_relocs
= NULL
;
6320 /* Free up the section information. */
6321 if (flinfo
.section_info
!= NULL
)
6325 for (i
= 0; i
< abfd
->section_count
; i
++)
6327 free (flinfo
.section_info
[i
].relocs
);
6328 free (flinfo
.section_info
[i
].rel_hashes
);
6330 free (flinfo
.section_info
);
6331 flinfo
.section_info
= NULL
;
6334 /* Write out the loader section contents. */
6335 o
= xcoff_hash_table (info
)->loader_section
;
6338 && o
->output_section
!= bfd_abs_section_ptr
)
6340 BFD_ASSERT ((bfd_byte
*) flinfo
.ldrel
6341 == (xcoff_hash_table (info
)->loader_section
->contents
6342 + xcoff_hash_table (info
)->ldhdr
.l_impoff
));
6343 if (!bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6344 (file_ptr
) o
->output_offset
, o
->size
))
6348 /* Write out the magic sections. */
6349 o
= xcoff_hash_table (info
)->linkage_section
;
6352 && o
->output_section
!= bfd_abs_section_ptr
6353 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6354 (file_ptr
) o
->output_offset
,
6357 o
= xcoff_hash_table (info
)->toc_section
;
6360 && o
->output_section
!= bfd_abs_section_ptr
6361 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6362 (file_ptr
) o
->output_offset
,
6365 o
= xcoff_hash_table (info
)->descriptor_section
;
6368 && o
->output_section
!= bfd_abs_section_ptr
6369 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6370 (file_ptr
) o
->output_offset
,
6374 /* Write out the string table. */
6375 pos
= obj_sym_filepos (abfd
) + obj_raw_syment_count (abfd
) * symesz
;
6376 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6379 _bfd_stringtab_size (flinfo
.strtab
) + STRING_SIZE_SIZE
,
6381 amt
= STRING_SIZE_SIZE
;
6382 if (bfd_bwrite (strbuf
, amt
, abfd
) != amt
)
6384 if (! _bfd_stringtab_emit (abfd
, flinfo
.strtab
))
6387 _bfd_stringtab_free (flinfo
.strtab
);
6389 /* Write out the debugging string table. */
6390 o
= xcoff_hash_table (info
)->debug_section
;
6393 && o
->output_section
!= bfd_abs_section_ptr
)
6395 struct bfd_strtab_hash
*debug_strtab
;
6397 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
6398 BFD_ASSERT (o
->output_section
->size
- o
->output_offset
6399 >= _bfd_stringtab_size (debug_strtab
));
6400 pos
= o
->output_section
->filepos
+ o
->output_offset
;
6401 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6403 if (! _bfd_stringtab_emit (abfd
, debug_strtab
))
6407 /* Setting symcount to 0 will cause write_object_contents to
6408 not try to write out the symbols. */
6414 if (flinfo
.strtab
!= NULL
)
6415 _bfd_stringtab_free (flinfo
.strtab
);
6417 if (flinfo
.section_info
!= NULL
)
6421 for (i
= 0; i
< abfd
->section_count
; i
++)
6423 free (flinfo
.section_info
[i
].relocs
);
6424 free (flinfo
.section_info
[i
].rel_hashes
);
6426 free (flinfo
.section_info
);
6429 free (flinfo
.internal_syms
);
6430 free (flinfo
.sym_indices
);
6431 free (flinfo
.outsyms
);
6432 free (flinfo
.linenos
);
6433 free (flinfo
.contents
);
6434 free (flinfo
.external_relocs
);
6435 free (external_relocs
);