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
))
230 if (contents
!= NULL
)
234 coff_section_data (abfd
, sec
)->contents
= contents
;
240 /* Get the size required to hold the dynamic symbols. */
243 _bfd_xcoff_get_dynamic_symtab_upper_bound (bfd
*abfd
)
247 struct internal_ldhdr ldhdr
;
249 if ((abfd
->flags
& DYNAMIC
) == 0)
251 bfd_set_error (bfd_error_invalid_operation
);
255 lsec
= bfd_get_section_by_name (abfd
, ".loader");
258 bfd_set_error (bfd_error_no_symbols
);
262 if (! xcoff_get_section_contents (abfd
, lsec
))
264 contents
= coff_section_data (abfd
, lsec
)->contents
;
266 bfd_xcoff_swap_ldhdr_in (abfd
, (void *) contents
, &ldhdr
);
268 return (ldhdr
.l_nsyms
+ 1) * sizeof (asymbol
*);
271 /* Get the dynamic symbols. */
274 _bfd_xcoff_canonicalize_dynamic_symtab (bfd
*abfd
, asymbol
**psyms
)
278 struct internal_ldhdr ldhdr
;
280 bfd_byte
*elsym
, *elsymend
;
281 coff_symbol_type
*symbuf
;
283 if ((abfd
->flags
& DYNAMIC
) == 0)
285 bfd_set_error (bfd_error_invalid_operation
);
289 lsec
= bfd_get_section_by_name (abfd
, ".loader");
292 bfd_set_error (bfd_error_no_symbols
);
296 if (! xcoff_get_section_contents (abfd
, lsec
))
298 contents
= coff_section_data (abfd
, lsec
)->contents
;
300 coff_section_data (abfd
, lsec
)->keep_contents
= TRUE
;
302 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
304 strings
= (char *) contents
+ ldhdr
.l_stoff
;
306 symbuf
= bfd_zalloc (abfd
, ldhdr
.l_nsyms
* sizeof (* symbuf
));
310 elsym
= contents
+ bfd_xcoff_loader_symbol_offset(abfd
, &ldhdr
);
312 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz(abfd
);
313 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz(abfd
), symbuf
++, psyms
++)
315 struct internal_ldsym ldsym
;
317 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
319 symbuf
->symbol
.the_bfd
= abfd
;
321 if (ldsym
._l
._l_l
._l_zeroes
== 0)
322 symbuf
->symbol
.name
= strings
+ ldsym
._l
._l_l
._l_offset
;
327 c
= bfd_alloc (abfd
, (bfd_size_type
) SYMNMLEN
+ 1);
330 memcpy (c
, ldsym
._l
._l_name
, SYMNMLEN
);
332 symbuf
->symbol
.name
= c
;
335 if (ldsym
.l_smclas
== XMC_XO
)
336 symbuf
->symbol
.section
= bfd_abs_section_ptr
;
338 symbuf
->symbol
.section
= coff_section_from_bfd_index (abfd
,
340 symbuf
->symbol
.value
= ldsym
.l_value
- symbuf
->symbol
.section
->vma
;
342 symbuf
->symbol
.flags
= BSF_NO_FLAGS
;
343 if ((ldsym
.l_smtype
& L_EXPORT
) != 0)
345 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
346 symbuf
->symbol
.flags
|= BSF_WEAK
;
348 symbuf
->symbol
.flags
|= BSF_GLOBAL
;
351 /* FIXME: We have no way to record the other information stored
352 with the loader symbol. */
353 *psyms
= (asymbol
*) symbuf
;
358 return ldhdr
.l_nsyms
;
361 /* Get the size required to hold the dynamic relocs. */
364 _bfd_xcoff_get_dynamic_reloc_upper_bound (bfd
*abfd
)
368 struct internal_ldhdr ldhdr
;
370 if ((abfd
->flags
& DYNAMIC
) == 0)
372 bfd_set_error (bfd_error_invalid_operation
);
376 lsec
= bfd_get_section_by_name (abfd
, ".loader");
379 bfd_set_error (bfd_error_no_symbols
);
383 if (! xcoff_get_section_contents (abfd
, lsec
))
385 contents
= coff_section_data (abfd
, lsec
)->contents
;
387 bfd_xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) contents
, &ldhdr
);
389 return (ldhdr
.l_nreloc
+ 1) * sizeof (arelent
*);
392 /* Get the dynamic relocs. */
395 _bfd_xcoff_canonicalize_dynamic_reloc (bfd
*abfd
,
401 struct internal_ldhdr ldhdr
;
403 bfd_byte
*elrel
, *elrelend
;
405 if ((abfd
->flags
& DYNAMIC
) == 0)
407 bfd_set_error (bfd_error_invalid_operation
);
411 lsec
= bfd_get_section_by_name (abfd
, ".loader");
414 bfd_set_error (bfd_error_no_symbols
);
418 if (! xcoff_get_section_contents (abfd
, lsec
))
420 contents
= coff_section_data (abfd
, lsec
)->contents
;
422 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
424 relbuf
= bfd_alloc (abfd
, ldhdr
.l_nreloc
* sizeof (arelent
));
428 elrel
= contents
+ bfd_xcoff_loader_reloc_offset(abfd
, &ldhdr
);
430 elrelend
= elrel
+ ldhdr
.l_nreloc
* bfd_xcoff_ldrelsz(abfd
);
431 for (; elrel
< elrelend
; elrel
+= bfd_xcoff_ldrelsz(abfd
), relbuf
++,
434 struct internal_ldrel ldrel
;
436 bfd_xcoff_swap_ldrel_in (abfd
, elrel
, &ldrel
);
438 if (ldrel
.l_symndx
>= 3)
439 relbuf
->sym_ptr_ptr
= syms
+ (ldrel
.l_symndx
- 3);
445 switch (ldrel
.l_symndx
)
461 sec
= bfd_get_section_by_name (abfd
, name
);
464 bfd_set_error (bfd_error_bad_value
);
468 relbuf
->sym_ptr_ptr
= sec
->symbol_ptr_ptr
;
471 relbuf
->address
= ldrel
.l_vaddr
;
474 /* Most dynamic relocs have the same type. FIXME: This is only
475 correct if ldrel.l_rtype == 0. In other cases, we should use
476 a different howto. */
477 relbuf
->howto
= bfd_xcoff_dynamic_reloc_howto(abfd
);
479 /* FIXME: We have no way to record the l_rsecnm field. */
486 return ldhdr
.l_nreloc
;
489 /* Hash functions for xcoff_link_hash_table's archive_info. */
492 xcoff_archive_info_hash (const void *data
)
494 const struct xcoff_archive_info
*info
;
496 info
= (const struct xcoff_archive_info
*) data
;
497 return htab_hash_pointer (info
->archive
);
501 xcoff_archive_info_eq (const void *data1
, const void *data2
)
503 const struct xcoff_archive_info
*info1
;
504 const struct xcoff_archive_info
*info2
;
506 info1
= (const struct xcoff_archive_info
*) data1
;
507 info2
= (const struct xcoff_archive_info
*) data2
;
508 return info1
->archive
== info2
->archive
;
511 /* Return information about archive ARCHIVE. Return NULL on error. */
513 static struct xcoff_archive_info
*
514 xcoff_get_archive_info (struct bfd_link_info
*info
, bfd
*archive
)
516 struct xcoff_link_hash_table
*htab
;
517 struct xcoff_archive_info
*entryp
, entry
;
520 htab
= xcoff_hash_table (info
);
521 entry
.archive
= archive
;
522 slot
= htab_find_slot (htab
->archive_info
, &entry
, INSERT
);
529 entryp
= bfd_zalloc (archive
, sizeof (entry
));
533 entryp
->archive
= archive
;
539 /* Routine to create an entry in an XCOFF link hash table. */
541 static struct bfd_hash_entry
*
542 xcoff_link_hash_newfunc (struct bfd_hash_entry
*entry
,
543 struct bfd_hash_table
*table
,
546 struct xcoff_link_hash_entry
*ret
= (struct xcoff_link_hash_entry
*) entry
;
548 /* Allocate the structure if it has not already been allocated by a
551 ret
= bfd_hash_allocate (table
, sizeof (* ret
));
555 /* Call the allocation method of the superclass. */
556 ret
= ((struct xcoff_link_hash_entry
*)
557 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
561 /* Set local fields. */
563 ret
->toc_section
= NULL
;
564 ret
->u
.toc_indx
= -1;
565 ret
->descriptor
= NULL
;
569 ret
->smclas
= XMC_UA
;
572 return (struct bfd_hash_entry
*) ret
;
575 /* Destroy an XCOFF link hash table. */
578 _bfd_xcoff_bfd_link_hash_table_free (bfd
*obfd
)
580 struct xcoff_link_hash_table
*ret
;
582 ret
= (struct xcoff_link_hash_table
*) obfd
->link
.hash
;
583 if (ret
->archive_info
)
584 htab_delete (ret
->archive_info
);
585 if (ret
->debug_strtab
)
586 _bfd_stringtab_free (ret
->debug_strtab
);
587 _bfd_generic_link_hash_table_free (obfd
);
590 /* Create an XCOFF link hash table. */
592 struct bfd_link_hash_table
*
593 _bfd_xcoff_bfd_link_hash_table_create (bfd
*abfd
)
595 struct xcoff_link_hash_table
*ret
;
596 size_t amt
= sizeof (* ret
);
598 ret
= bfd_zmalloc (amt
);
601 if (!_bfd_link_hash_table_init (&ret
->root
, abfd
, xcoff_link_hash_newfunc
,
602 sizeof (struct xcoff_link_hash_entry
)))
608 ret
->debug_strtab
= _bfd_xcoff_stringtab_init ();
609 ret
->archive_info
= htab_create (37, xcoff_archive_info_hash
,
610 xcoff_archive_info_eq
, NULL
);
611 if (!ret
->debug_strtab
|| !ret
->archive_info
)
613 _bfd_xcoff_bfd_link_hash_table_free (abfd
);
616 ret
->root
.hash_table_free
= _bfd_xcoff_bfd_link_hash_table_free
;
618 /* The linker will always generate a full a.out header. We need to
619 record that fact now, before the sizeof_headers routine could be
621 xcoff_data (abfd
)->full_aouthdr
= TRUE
;
626 /* Read internal relocs for an XCOFF csect. This is a wrapper around
627 _bfd_coff_read_internal_relocs which tries to take advantage of any
628 relocs which may have been cached for the enclosing section. */
630 static struct internal_reloc
*
631 xcoff_read_internal_relocs (bfd
*abfd
,
634 bfd_byte
*external_relocs
,
635 bfd_boolean require_internal
,
636 struct internal_reloc
*internal_relocs
)
638 if (coff_section_data (abfd
, sec
) != NULL
639 && coff_section_data (abfd
, sec
)->relocs
== NULL
640 && xcoff_section_data (abfd
, sec
) != NULL
)
644 enclosing
= xcoff_section_data (abfd
, sec
)->enclosing
;
646 if (enclosing
!= NULL
647 && (coff_section_data (abfd
, enclosing
) == NULL
648 || coff_section_data (abfd
, enclosing
)->relocs
== NULL
)
650 && enclosing
->reloc_count
> 0)
652 if (_bfd_coff_read_internal_relocs (abfd
, enclosing
, TRUE
,
653 external_relocs
, FALSE
, NULL
)
658 if (enclosing
!= NULL
659 && coff_section_data (abfd
, enclosing
) != NULL
660 && coff_section_data (abfd
, enclosing
)->relocs
!= NULL
)
664 off
= ((sec
->rel_filepos
- enclosing
->rel_filepos
)
665 / bfd_coff_relsz (abfd
));
667 if (! require_internal
)
668 return coff_section_data (abfd
, enclosing
)->relocs
+ off
;
669 memcpy (internal_relocs
,
670 coff_section_data (abfd
, enclosing
)->relocs
+ off
,
671 sec
->reloc_count
* sizeof (struct internal_reloc
));
672 return internal_relocs
;
676 return _bfd_coff_read_internal_relocs (abfd
, sec
, cache
, external_relocs
,
677 require_internal
, internal_relocs
);
680 /* Split FILENAME into an import path and an import filename,
681 storing them in *IMPPATH and *IMPFILE respectively. */
684 bfd_xcoff_split_import_path (bfd
*abfd
, const char *filename
,
685 const char **imppath
, const char **impfile
)
691 base
= lbasename (filename
);
692 length
= base
- filename
;
694 /* The filename has no directory component, so use an empty path. */
696 else if (length
== 1)
697 /* The filename is in the root directory. */
701 /* Extract the (non-empty) directory part. Note that we don't
702 need to strip duplicate directory separators from any part
703 of the string; the native linker doesn't do that either. */
704 path
= bfd_alloc (abfd
, length
);
707 memcpy (path
, filename
, length
- 1);
708 path
[length
- 1] = 0;
715 /* Set ARCHIVE's import path as though its filename had been given
719 bfd_xcoff_set_archive_import_path (struct bfd_link_info
*info
,
720 bfd
*archive
, const char *filename
)
722 struct xcoff_archive_info
*archive_info
;
724 archive_info
= xcoff_get_archive_info (info
, archive
);
725 return (archive_info
!= NULL
726 && bfd_xcoff_split_import_path (archive
, filename
,
727 &archive_info
->imppath
,
728 &archive_info
->impfile
));
731 /* H is an imported symbol. Set the import module's path, file and member
732 to IMPATH, IMPFILE and IMPMEMBER respectively. All three are null if
733 no specific import module is specified. */
736 xcoff_set_import_path (struct bfd_link_info
*info
,
737 struct xcoff_link_hash_entry
*h
,
738 const char *imppath
, const char *impfile
,
739 const char *impmember
)
742 struct xcoff_import_file
**pp
;
744 /* We overload the ldindx field to hold the l_ifile value for this
746 BFD_ASSERT (h
->ldsym
== NULL
);
747 BFD_ASSERT ((h
->flags
& XCOFF_BUILT_LDSYM
) == 0);
752 /* We start c at 1 because the first entry in the import list is
753 reserved for the library search path. */
754 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
756 pp
= &(*pp
)->next
, ++c
)
758 if (filename_cmp ((*pp
)->path
, imppath
) == 0
759 && filename_cmp ((*pp
)->file
, impfile
) == 0
760 && filename_cmp ((*pp
)->member
, impmember
) == 0)
766 struct xcoff_import_file
*n
;
767 size_t amt
= sizeof (*n
);
769 n
= bfd_alloc (info
->output_bfd
, amt
);
775 n
->member
= impmember
;
783 /* H is the bfd symbol associated with exported .loader symbol LDSYM.
784 Return true if LDSYM defines H. */
787 xcoff_dynamic_definition_p (struct xcoff_link_hash_entry
*h
,
788 struct internal_ldsym
*ldsym
)
790 /* If we didn't know about H before processing LDSYM, LDSYM
791 definitely defines H. */
792 if (h
->root
.type
== bfd_link_hash_new
)
795 /* If H is currently a weak dynamic symbol, and if LDSYM is a strong
796 dynamic symbol, LDSYM trumps the current definition of H. */
797 if ((ldsym
->l_smtype
& L_WEAK
) == 0
798 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0
799 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
800 && (h
->root
.type
== bfd_link_hash_defweak
801 || h
->root
.type
== bfd_link_hash_undefweak
))
804 /* If H is currently undefined, LDSYM defines it. */
805 if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0
806 && (h
->root
.type
== bfd_link_hash_undefined
807 || h
->root
.type
== bfd_link_hash_undefweak
))
813 /* This function is used to add symbols from a dynamic object to the
814 global symbol table. */
817 xcoff_link_add_dynamic_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
821 struct internal_ldhdr ldhdr
;
823 bfd_byte
*elsym
, *elsymend
;
824 struct xcoff_import_file
*n
;
826 struct xcoff_import_file
**pp
;
828 /* We can only handle a dynamic object if we are generating an XCOFF
830 if (info
->output_bfd
->xvec
!= abfd
->xvec
)
833 (_("%pB: XCOFF shared object when not producing XCOFF output"),
835 bfd_set_error (bfd_error_invalid_operation
);
839 /* The symbols we use from a dynamic object are not the symbols in
840 the normal symbol table, but, rather, the symbols in the export
841 table. If there is a global symbol in a dynamic object which is
842 not in the export table, the loader will not be able to find it,
843 so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
844 libc.a has symbols in the export table which are not in the
847 /* Read in the .loader section. FIXME: We should really use the
848 o_snloader field in the a.out header, rather than grabbing the
850 lsec
= bfd_get_section_by_name (abfd
, ".loader");
854 (_("%pB: dynamic object with no .loader section"),
856 bfd_set_error (bfd_error_no_symbols
);
860 if (! xcoff_get_section_contents (abfd
, lsec
))
862 contents
= coff_section_data (abfd
, lsec
)->contents
;
864 /* Remove the sections from this object, so that they do not get
865 included in the link. */
866 bfd_section_list_clear (abfd
);
868 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
870 strings
= (char *) contents
+ ldhdr
.l_stoff
;
872 elsym
= contents
+ bfd_xcoff_loader_symbol_offset(abfd
, &ldhdr
);
874 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz(abfd
);
876 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz(abfd
))
878 struct internal_ldsym ldsym
;
879 char nambuf
[SYMNMLEN
+ 1];
881 struct xcoff_link_hash_entry
*h
;
883 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
885 /* We are only interested in exported symbols. */
886 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
889 if (ldsym
._l
._l_l
._l_zeroes
== 0)
890 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
893 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
894 nambuf
[SYMNMLEN
] = '\0';
898 /* Normally we could not call xcoff_link_hash_lookup in an add
899 symbols routine, since we might not be using an XCOFF hash
900 table. However, we verified above that we are using an XCOFF
903 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
,
908 if (!xcoff_dynamic_definition_p (h
, &ldsym
))
911 h
->flags
|= XCOFF_DEF_DYNAMIC
;
912 h
->smclas
= ldsym
.l_smclas
;
913 if (h
->smclas
== XMC_XO
)
915 /* This symbol has an absolute value. */
916 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
917 h
->root
.type
= bfd_link_hash_defweak
;
919 h
->root
.type
= bfd_link_hash_defined
;
920 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
921 h
->root
.u
.def
.value
= ldsym
.l_value
;
925 /* Otherwise, we don't bother to actually define the symbol,
926 since we don't have a section to put it in anyhow.
927 We assume instead that an undefined XCOFF_DEF_DYNAMIC symbol
928 should be imported from the symbol's undef.abfd. */
929 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
930 h
->root
.type
= bfd_link_hash_undefweak
;
932 h
->root
.type
= bfd_link_hash_undefined
;
933 h
->root
.u
.undef
.abfd
= abfd
;
936 /* If this symbol defines a function descriptor, then it
937 implicitly defines the function code as well. */
938 if (h
->smclas
== XMC_DS
939 || (h
->smclas
== XMC_XO
&& name
[0] != '.'))
940 h
->flags
|= XCOFF_DESCRIPTOR
;
941 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
943 struct xcoff_link_hash_entry
*hds
;
950 dsnm
= bfd_malloc ((bfd_size_type
) strlen (name
) + 2);
954 strcpy (dsnm
+ 1, name
);
955 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
), dsnm
,
965 if (xcoff_dynamic_definition_p (hds
, &ldsym
))
967 hds
->root
.type
= h
->root
.type
;
968 hds
->flags
|= XCOFF_DEF_DYNAMIC
;
969 if (h
->smclas
== XMC_XO
)
971 /* An absolute symbol appears to actually define code, not a
972 function descriptor. This is how some math functions are
973 implemented on AIX 4.1. */
974 hds
->smclas
= XMC_XO
;
975 hds
->root
.u
.def
.section
= bfd_abs_section_ptr
;
976 hds
->root
.u
.def
.value
= ldsym
.l_value
;
980 hds
->smclas
= XMC_PR
;
981 hds
->root
.u
.undef
.abfd
= abfd
;
982 /* We do not want to add this to the undefined
989 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
991 free (coff_section_data (abfd
, lsec
)->contents
);
992 coff_section_data (abfd
, lsec
)->contents
= NULL
;
995 /* Record this file in the import files. */
996 n
= bfd_alloc (abfd
, (bfd_size_type
) sizeof (struct xcoff_import_file
));
1001 if (abfd
->my_archive
== NULL
|| bfd_is_thin_archive (abfd
->my_archive
))
1003 if (!bfd_xcoff_split_import_path (abfd
, abfd
->filename
,
1004 &n
->path
, &n
->file
))
1010 struct xcoff_archive_info
*archive_info
;
1012 archive_info
= xcoff_get_archive_info (info
, abfd
->my_archive
);
1013 if (!archive_info
->impfile
)
1015 if (!bfd_xcoff_split_import_path (archive_info
->archive
,
1016 archive_info
->archive
->filename
,
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
)->relocs
!= NULL
2182 && ! coff_section_data (abfd
, o
)->keep_relocs
)
2184 free (coff_section_data (abfd
, o
)->relocs
);
2185 coff_section_data (abfd
, o
)->relocs
= NULL
;
2189 /* Free up the line numbers. FIXME: We could cache these
2190 somewhere for the final link, to avoid reading them again. */
2191 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2193 free (reloc_info
[o
->target_index
].linenos
);
2194 reloc_info
[o
->target_index
].linenos
= NULL
;
2200 obj_coff_keep_syms (abfd
) = keep_syms
;
2205 if (reloc_info
!= NULL
)
2207 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2209 if (reloc_info
[o
->target_index
].csects
!= NULL
)
2210 free (reloc_info
[o
->target_index
].csects
);
2211 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2212 free (reloc_info
[o
->target_index
].linenos
);
2216 obj_coff_keep_syms (abfd
) = keep_syms
;
2223 /* Add symbols from an XCOFF object file. */
2226 xcoff_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2228 if (! _bfd_coff_get_external_symbols (abfd
))
2230 if (! xcoff_link_add_symbols (abfd
, info
))
2232 if (! info
->keep_memory
)
2234 if (! _bfd_coff_free_symbols (abfd
))
2240 /* Look through the loader symbols to see if this dynamic object
2241 should be included in the link. The native linker uses the loader
2242 symbols, not the normal symbol table, so we do too. */
2245 xcoff_link_check_dynamic_ar_symbols (bfd
*abfd
,
2246 struct bfd_link_info
*info
,
2247 bfd_boolean
*pneeded
,
2252 struct internal_ldhdr ldhdr
;
2253 const char *strings
;
2254 bfd_byte
*elsym
, *elsymend
;
2258 lsec
= bfd_get_section_by_name (abfd
, ".loader");
2260 /* There are no symbols, so don't try to include it. */
2263 if (! xcoff_get_section_contents (abfd
, lsec
))
2265 contents
= coff_section_data (abfd
, lsec
)->contents
;
2267 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
2269 strings
= (char *) contents
+ ldhdr
.l_stoff
;
2271 elsym
= contents
+ bfd_xcoff_loader_symbol_offset (abfd
, &ldhdr
);
2273 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz (abfd
);
2274 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz (abfd
))
2276 struct internal_ldsym ldsym
;
2277 char nambuf
[SYMNMLEN
+ 1];
2279 struct bfd_link_hash_entry
*h
;
2281 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
2283 /* We are only interested in exported symbols. */
2284 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
2287 if (ldsym
._l
._l_l
._l_zeroes
== 0)
2288 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
2291 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
2292 nambuf
[SYMNMLEN
] = '\0';
2296 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2298 /* We are only interested in symbols that are currently
2299 undefined. At this point we know that we are using an XCOFF
2302 && h
->type
== bfd_link_hash_undefined
2303 && (((struct xcoff_link_hash_entry
*) h
)->flags
2304 & XCOFF_DEF_DYNAMIC
) == 0)
2306 if (!(*info
->callbacks
2307 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2314 /* We do not need this shared object. */
2315 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
2317 free (coff_section_data (abfd
, lsec
)->contents
);
2318 coff_section_data (abfd
, lsec
)->contents
= NULL
;
2324 /* Look through the symbols to see if this object file should be
2325 included in the link. */
2328 xcoff_link_check_ar_symbols (bfd
*abfd
,
2329 struct bfd_link_info
*info
,
2330 bfd_boolean
*pneeded
,
2333 bfd_size_type symesz
;
2339 if ((abfd
->flags
& DYNAMIC
) != 0
2340 && ! info
->static_link
2341 && info
->output_bfd
->xvec
== abfd
->xvec
)
2342 return xcoff_link_check_dynamic_ar_symbols (abfd
, info
, pneeded
, subsbfd
);
2344 symesz
= bfd_coff_symesz (abfd
);
2345 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
2346 esym_end
= esym
+ obj_raw_syment_count (abfd
) * symesz
;
2347 while (esym
< esym_end
)
2349 struct internal_syment sym
;
2351 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
2353 if (EXTERN_SYM_P (sym
.n_sclass
) && sym
.n_scnum
!= N_UNDEF
)
2356 char buf
[SYMNMLEN
+ 1];
2357 struct bfd_link_hash_entry
*h
;
2359 /* This symbol is externally visible, and is defined by this
2361 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
2365 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2367 /* We are only interested in symbols that are currently
2368 undefined. If a symbol is currently known to be common,
2369 XCOFF linkers do not bring in an object file which
2370 defines it. We also don't bring in symbols to satisfy
2371 undefined references in shared objects. */
2373 && h
->type
== bfd_link_hash_undefined
2374 && (info
->output_bfd
->xvec
!= abfd
->xvec
2375 || (((struct xcoff_link_hash_entry
*) h
)->flags
2376 & XCOFF_DEF_DYNAMIC
) == 0))
2378 if (!(*info
->callbacks
2379 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2386 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2389 /* We do not need this object file. */
2393 /* Check a single archive element to see if we need to include it in
2394 the link. *PNEEDED is set according to whether this element is
2395 needed in the link or not. This is called via
2396 _bfd_generic_link_add_archive_symbols. */
2399 xcoff_link_check_archive_element (bfd
*abfd
,
2400 struct bfd_link_info
*info
,
2401 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
2402 const char *name ATTRIBUTE_UNUSED
,
2403 bfd_boolean
*pneeded
)
2405 bfd_boolean keep_syms_p
;
2408 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2409 if (!_bfd_coff_get_external_symbols (abfd
))
2413 if (!xcoff_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
2418 /* Potentially, the add_archive_element hook may have set a
2419 substitute BFD for us. */
2423 && !_bfd_coff_free_symbols (oldbfd
))
2425 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2426 if (!_bfd_coff_get_external_symbols (abfd
))
2429 if (!xcoff_link_add_symbols (abfd
, info
))
2431 if (info
->keep_memory
)
2437 if (!_bfd_coff_free_symbols (abfd
))
2444 /* Given an XCOFF BFD, add symbols to the global hash table as
2448 _bfd_xcoff_bfd_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2450 switch (bfd_get_format (abfd
))
2453 return xcoff_link_add_object_symbols (abfd
, info
);
2456 /* If the archive has a map, do the usual search. We then need
2457 to check the archive for dynamic objects, because they may not
2458 appear in the archive map even though they should, perhaps, be
2459 included. If the archive has no map, we just consider each object
2460 file in turn, since that apparently is what the AIX native linker
2462 if (bfd_has_map (abfd
))
2464 if (! (_bfd_generic_link_add_archive_symbols
2465 (abfd
, info
, xcoff_link_check_archive_element
)))
2472 member
= bfd_openr_next_archived_file (abfd
, NULL
);
2473 while (member
!= NULL
)
2475 if (bfd_check_format (member
, bfd_object
)
2476 && (info
->output_bfd
->xvec
== member
->xvec
)
2477 && (! bfd_has_map (abfd
) || (member
->flags
& DYNAMIC
) != 0))
2481 if (! xcoff_link_check_archive_element (member
, info
,
2482 NULL
, NULL
, &needed
))
2485 member
->archive_pass
= -1;
2487 member
= bfd_openr_next_archived_file (abfd
, member
);
2494 bfd_set_error (bfd_error_wrong_format
);
2500 _bfd_xcoff_define_common_symbol (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2501 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2502 struct bfd_link_hash_entry
*harg
)
2504 struct xcoff_link_hash_entry
*h
;
2506 if (!bfd_generic_define_common_symbol (output_bfd
, info
, harg
))
2509 h
= (struct xcoff_link_hash_entry
*) harg
;
2510 h
->flags
|= XCOFF_DEF_REGULAR
;
2514 /* If symbol H has not been interpreted as a function descriptor,
2515 see whether it should be. Set up its descriptor information if so. */
2518 xcoff_find_function (struct bfd_link_info
*info
,
2519 struct xcoff_link_hash_entry
*h
)
2521 if ((h
->flags
& XCOFF_DESCRIPTOR
) == 0
2522 && h
->root
.root
.string
[0] != '.')
2525 struct xcoff_link_hash_entry
*hfn
;
2528 amt
= strlen (h
->root
.root
.string
) + 2;
2529 fnname
= bfd_malloc (amt
);
2533 strcpy (fnname
+ 1, h
->root
.root
.string
);
2534 hfn
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2535 fnname
, FALSE
, FALSE
, TRUE
);
2538 && hfn
->smclas
== XMC_PR
2539 && (hfn
->root
.type
== bfd_link_hash_defined
2540 || hfn
->root
.type
== bfd_link_hash_defweak
))
2542 h
->flags
|= XCOFF_DESCRIPTOR
;
2543 h
->descriptor
= hfn
;
2544 hfn
->descriptor
= h
;
2550 /* Return true if the given bfd contains at least one shared object. */
2553 xcoff_archive_contains_shared_object_p (struct bfd_link_info
*info
,
2556 struct xcoff_archive_info
*archive_info
;
2559 archive_info
= xcoff_get_archive_info (info
, archive
);
2560 if (!archive_info
->know_contains_shared_object_p
)
2562 member
= bfd_openr_next_archived_file (archive
, NULL
);
2563 while (member
!= NULL
&& (member
->flags
& DYNAMIC
) == 0)
2564 member
= bfd_openr_next_archived_file (archive
, member
);
2566 archive_info
->contains_shared_object_p
= (member
!= NULL
);
2567 archive_info
->know_contains_shared_object_p
= 1;
2569 return archive_info
->contains_shared_object_p
;
2572 /* Symbol H qualifies for export by -bexpfull. Return true if it also
2573 qualifies for export by -bexpall. */
2576 xcoff_covered_by_expall_p (struct xcoff_link_hash_entry
*h
)
2578 /* Exclude symbols beginning with '_'. */
2579 if (h
->root
.root
.string
[0] == '_')
2582 /* Exclude archive members that would otherwise be unreferenced. */
2583 if ((h
->flags
& XCOFF_MARK
) == 0
2584 && (h
->root
.type
== bfd_link_hash_defined
2585 || h
->root
.type
== bfd_link_hash_defweak
)
2586 && h
->root
.u
.def
.section
->owner
!= NULL
2587 && h
->root
.u
.def
.section
->owner
->my_archive
!= NULL
)
2593 /* Return true if symbol H qualifies for the forms of automatic export
2594 specified by AUTO_EXPORT_FLAGS. */
2597 xcoff_auto_export_p (struct bfd_link_info
*info
,
2598 struct xcoff_link_hash_entry
*h
,
2599 unsigned int auto_export_flags
)
2601 /* Don't automatically export things that were explicitly exported. */
2602 if ((h
->flags
& XCOFF_EXPORT
) != 0)
2605 /* Don't export things that we don't define. */
2606 if ((h
->flags
& XCOFF_DEF_REGULAR
) == 0)
2609 /* Don't export functions; export their descriptors instead. */
2610 if (h
->root
.root
.string
[0] == '.')
2613 /* We don't export a symbol which is being defined by an object
2614 included from an archive which contains a shared object. The
2615 rationale is that if an archive contains both an unshared and
2616 a shared object, then there must be some reason that the
2617 unshared object is unshared, and we don't want to start
2618 providing a shared version of it. In particular, this solves
2619 a bug involving the _savefNN set of functions. gcc will call
2620 those functions without providing a slot to restore the TOC,
2621 so it is essential that these functions be linked in directly
2622 and not from a shared object, which means that a shared
2623 object which also happens to link them in must not export
2624 them. This is confusing, but I haven't been able to think of
2625 a different approach. Note that the symbols can, of course,
2626 be exported explicitly. */
2627 if (h
->root
.type
== bfd_link_hash_defined
2628 || h
->root
.type
== bfd_link_hash_defweak
)
2632 owner
= h
->root
.u
.def
.section
->owner
;
2634 && owner
->my_archive
!= NULL
2635 && xcoff_archive_contains_shared_object_p (info
, owner
->my_archive
))
2639 /* Otherwise, all symbols are exported by -bexpfull. */
2640 if ((auto_export_flags
& XCOFF_EXPFULL
) != 0)
2643 /* Despite its name, -bexpall exports most but not all symbols. */
2644 if ((auto_export_flags
& XCOFF_EXPALL
) != 0
2645 && xcoff_covered_by_expall_p (h
))
2651 /* Return true if relocation REL needs to be copied to the .loader section.
2652 If REL is against a global symbol, H is that symbol, otherwise it
2656 xcoff_need_ldrel_p (struct bfd_link_info
*info
, struct internal_reloc
*rel
,
2657 struct xcoff_link_hash_entry
*h
)
2659 if (!xcoff_hash_table (info
)->loader_section
)
2662 switch (rel
->r_type
)
2669 /* We should never need a .loader reloc for a TOC-relative reloc. */
2673 /* In this case, relocations against defined symbols can be resolved
2676 || h
->root
.type
== bfd_link_hash_defined
2677 || h
->root
.type
== bfd_link_hash_defweak
2678 || h
->root
.type
== bfd_link_hash_common
)
2681 /* We will always provide a local definition of function symbols,
2682 even if we don't have one yet. */
2683 if ((h
->flags
& XCOFF_CALLED
) != 0)
2692 /* Absolute relocations against absolute symbols can be
2693 resolved statically. */
2694 if (h
!= NULL
&& bfd_is_abs_symbol (&h
->root
))
2701 /* Mark a symbol as not being garbage, including the section in which
2704 static inline bfd_boolean
2705 xcoff_mark_symbol (struct bfd_link_info
*info
, struct xcoff_link_hash_entry
*h
)
2707 if ((h
->flags
& XCOFF_MARK
) != 0)
2710 h
->flags
|= XCOFF_MARK
;
2712 /* If we're marking an undefined symbol, try find some way of
2714 if (!bfd_link_relocatable (info
)
2715 && (h
->flags
& XCOFF_IMPORT
) == 0
2716 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
2717 && (h
->root
.type
== bfd_link_hash_undefined
2718 || h
->root
.type
== bfd_link_hash_undefweak
))
2720 /* First check whether this symbol can be interpreted as an
2721 undefined function descriptor for a defined function symbol. */
2722 if (!xcoff_find_function (info
, h
))
2725 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
2726 && (h
->descriptor
->root
.type
== bfd_link_hash_defined
2727 || h
->descriptor
->root
.type
== bfd_link_hash_defweak
))
2729 /* This is a descriptor for a defined symbol, but the input
2730 objects have not defined the descriptor itself. Fill in
2731 the definition automatically.
2733 Note that we do this even if we found a dynamic definition
2734 of H. The local function definition logically overrides
2738 sec
= xcoff_hash_table (info
)->descriptor_section
;
2739 h
->root
.type
= bfd_link_hash_defined
;
2740 h
->root
.u
.def
.section
= sec
;
2741 h
->root
.u
.def
.value
= sec
->size
;
2743 h
->flags
|= XCOFF_DEF_REGULAR
;
2745 /* The size of the function descriptor depends on whether this
2746 is xcoff32 (12) or xcoff64 (24). */
2747 sec
->size
+= bfd_xcoff_function_descriptor_size (sec
->owner
);
2749 /* A function descriptor uses two relocs: one for the
2750 associated code, and one for the TOC address. */
2751 xcoff_hash_table (info
)->ldrel_count
+= 2;
2752 sec
->reloc_count
+= 2;
2754 /* Mark the function itself. */
2755 if (!xcoff_mark_symbol (info
, h
->descriptor
))
2758 /* Mark the TOC section, so that we get an anchor
2759 to relocate against. */
2760 if (!xcoff_mark (info
, xcoff_hash_table (info
)->toc_section
))
2763 /* We handle writing out the contents of the descriptor in
2764 xcoff_write_global_symbol. */
2766 else if (info
->static_link
)
2767 /* We can't get a symbol value dynamically, so just assume
2768 that it's undefined. */
2769 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2770 else if ((h
->flags
& XCOFF_CALLED
) != 0)
2772 /* This is a function symbol for which we need to create
2775 struct xcoff_link_hash_entry
*hds
;
2777 /* Mark the descriptor (and its TOC section). */
2778 hds
= h
->descriptor
;
2779 BFD_ASSERT ((hds
->root
.type
== bfd_link_hash_undefined
2780 || hds
->root
.type
== bfd_link_hash_undefweak
)
2781 && (hds
->flags
& XCOFF_DEF_REGULAR
) == 0);
2782 if (!xcoff_mark_symbol (info
, hds
))
2785 /* Treat this symbol as undefined if the descriptor was. */
2786 if ((hds
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
2787 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2789 /* Allocate room for the global linkage code itself. */
2790 sec
= xcoff_hash_table (info
)->linkage_section
;
2791 h
->root
.type
= bfd_link_hash_defined
;
2792 h
->root
.u
.def
.section
= sec
;
2793 h
->root
.u
.def
.value
= sec
->size
;
2795 h
->flags
|= XCOFF_DEF_REGULAR
;
2796 sec
->size
+= bfd_xcoff_glink_code_size (info
->output_bfd
);
2798 /* The global linkage code requires a TOC entry for the
2800 if (hds
->toc_section
== NULL
)
2805 xcoff32 uses 4 bytes in the toc.
2806 xcoff64 uses 8 bytes in the toc. */
2807 if (bfd_xcoff_is_xcoff64 (info
->output_bfd
))
2809 else if (bfd_xcoff_is_xcoff32 (info
->output_bfd
))
2814 /* Allocate room in the fallback TOC section. */
2815 hds
->toc_section
= xcoff_hash_table (info
)->toc_section
;
2816 hds
->u
.toc_offset
= hds
->toc_section
->size
;
2817 hds
->toc_section
->size
+= byte_size
;
2818 if (!xcoff_mark (info
, hds
->toc_section
))
2821 /* Allocate room for a static and dynamic R_TOC
2823 ++xcoff_hash_table (info
)->ldrel_count
;
2824 ++hds
->toc_section
->reloc_count
;
2826 /* Set the index to -2 to force this symbol to
2829 hds
->flags
|= XCOFF_SET_TOC
| XCOFF_LDREL
;
2832 else if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0)
2834 /* Record that the symbol was undefined, then import it.
2835 -brtl links use a special fake import file. */
2836 h
->flags
|= XCOFF_WAS_UNDEFINED
| XCOFF_IMPORT
;
2837 if (xcoff_hash_table (info
)->rtld
)
2839 if (!xcoff_set_import_path (info
, h
, "", "..", ""))
2844 if (!xcoff_set_import_path (info
, h
, NULL
, NULL
, NULL
))
2850 if (h
->root
.type
== bfd_link_hash_defined
2851 || h
->root
.type
== bfd_link_hash_defweak
)
2855 hsec
= h
->root
.u
.def
.section
;
2856 if (! bfd_is_abs_section (hsec
)
2857 && (hsec
->flags
& SEC_MARK
) == 0)
2859 if (! xcoff_mark (info
, hsec
))
2864 if (h
->toc_section
!= NULL
2865 && (h
->toc_section
->flags
& SEC_MARK
) == 0)
2867 if (! xcoff_mark (info
, h
->toc_section
))
2874 /* Look for a symbol called NAME. If the symbol is defined, mark it.
2875 If the symbol exists, set FLAGS. */
2878 xcoff_mark_symbol_by_name (struct bfd_link_info
*info
,
2879 const char *name
, unsigned int flags
)
2881 struct xcoff_link_hash_entry
*h
;
2883 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
,
2884 FALSE
, FALSE
, TRUE
);
2888 if (h
->root
.type
== bfd_link_hash_defined
2889 || h
->root
.type
== bfd_link_hash_defweak
)
2891 if (!xcoff_mark (info
, h
->root
.u
.def
.section
))
2898 /* The mark phase of garbage collection. For a given section, mark
2899 it, and all the sections which define symbols to which it refers.
2900 Because this function needs to look at the relocs, we also count
2901 the number of relocs which need to be copied into the .loader
2905 xcoff_mark (struct bfd_link_info
*info
, asection
*sec
)
2907 if (bfd_is_abs_section (sec
)
2908 || (sec
->flags
& SEC_MARK
) != 0)
2911 sec
->flags
|= SEC_MARK
;
2913 if (sec
->owner
->xvec
== info
->output_bfd
->xvec
2914 && coff_section_data (sec
->owner
, sec
) != NULL
2915 && xcoff_section_data (sec
->owner
, sec
) != NULL
)
2917 struct xcoff_link_hash_entry
**syms
;
2918 struct internal_reloc
*rel
, *relend
;
2920 unsigned long i
, first
, last
;
2922 /* Mark all the symbols in this section. */
2923 syms
= obj_xcoff_sym_hashes (sec
->owner
);
2924 csects
= xcoff_data (sec
->owner
)->csects
;
2925 first
= xcoff_section_data (sec
->owner
, sec
)->first_symndx
;
2926 last
= xcoff_section_data (sec
->owner
, sec
)->last_symndx
;
2927 for (i
= first
; i
<= last
; i
++)
2928 if (csects
[i
] == sec
2930 && (syms
[i
]->flags
& XCOFF_MARK
) == 0)
2932 if (!xcoff_mark_symbol (info
, syms
[i
]))
2936 /* Look through the section relocs. */
2937 if ((sec
->flags
& SEC_RELOC
) != 0
2938 && sec
->reloc_count
> 0)
2940 rel
= xcoff_read_internal_relocs (sec
->owner
, sec
, TRUE
,
2944 relend
= rel
+ sec
->reloc_count
;
2945 for (; rel
< relend
; rel
++)
2947 struct xcoff_link_hash_entry
*h
;
2949 if ((unsigned int) rel
->r_symndx
2950 > obj_raw_syment_count (sec
->owner
))
2953 h
= obj_xcoff_sym_hashes (sec
->owner
)[rel
->r_symndx
];
2956 if ((h
->flags
& XCOFF_MARK
) == 0)
2958 if (!xcoff_mark_symbol (info
, h
))
2966 rsec
= xcoff_data (sec
->owner
)->csects
[rel
->r_symndx
];
2968 && (rsec
->flags
& SEC_MARK
) == 0)
2970 if (!xcoff_mark (info
, rsec
))
2975 /* See if this reloc needs to be copied into the .loader
2977 if (xcoff_need_ldrel_p (info
, rel
, h
))
2979 ++xcoff_hash_table (info
)->ldrel_count
;
2981 h
->flags
|= XCOFF_LDREL
;
2985 if (! info
->keep_memory
2986 && coff_section_data (sec
->owner
, sec
) != NULL
2987 && coff_section_data (sec
->owner
, sec
)->relocs
!= NULL
2988 && ! coff_section_data (sec
->owner
, sec
)->keep_relocs
)
2990 free (coff_section_data (sec
->owner
, sec
)->relocs
);
2991 coff_section_data (sec
->owner
, sec
)->relocs
= NULL
;
2999 /* Routines that are called after all the input files have been
3000 handled, but before the sections are laid out in memory. */
3002 /* The sweep phase of garbage collection. Remove all garbage
3006 xcoff_sweep (struct bfd_link_info
*info
)
3010 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3014 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3016 if ((o
->flags
& SEC_MARK
) == 0)
3018 /* Keep all sections from non-XCOFF input files. Keep
3019 special sections. Keep .debug sections for the
3021 if (sub
->xvec
!= info
->output_bfd
->xvec
3022 || o
== xcoff_hash_table (info
)->debug_section
3023 || o
== xcoff_hash_table (info
)->loader_section
3024 || o
== xcoff_hash_table (info
)->linkage_section
3025 || o
== xcoff_hash_table (info
)->descriptor_section
3026 || (bfd_section_flags (o
) & SEC_DEBUGGING
)
3027 || strcmp (o
->name
, ".debug") == 0)
3028 o
->flags
|= SEC_MARK
;
3039 /* Record the number of elements in a set. This is used to output the
3040 correct csect length. */
3043 bfd_xcoff_link_record_set (bfd
*output_bfd
,
3044 struct bfd_link_info
*info
,
3045 struct bfd_link_hash_entry
*harg
,
3048 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3049 struct xcoff_link_size_list
*n
;
3052 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3055 /* This will hardly ever be called. I don't want to burn four bytes
3056 per global symbol, so instead the size is kept on a linked list
3057 attached to the hash table. */
3059 n
= bfd_alloc (output_bfd
, amt
);
3062 n
->next
= xcoff_hash_table (info
)->size_list
;
3065 xcoff_hash_table (info
)->size_list
= n
;
3067 h
->flags
|= XCOFF_HAS_SIZE
;
3072 /* Import a symbol. */
3075 bfd_xcoff_import_symbol (bfd
*output_bfd
,
3076 struct bfd_link_info
*info
,
3077 struct bfd_link_hash_entry
*harg
,
3079 const char *imppath
,
3080 const char *impfile
,
3081 const char *impmember
,
3082 unsigned int syscall_flag
)
3084 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3086 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3089 /* A symbol name which starts with a period is the code for a
3090 function. If the symbol is undefined, then add an undefined
3091 symbol for the function descriptor, and import that instead. */
3092 if (h
->root
.root
.string
[0] == '.'
3093 && h
->root
.type
== bfd_link_hash_undefined
3094 && val
== (bfd_vma
) -1)
3096 struct xcoff_link_hash_entry
*hds
;
3098 hds
= h
->descriptor
;
3101 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3102 h
->root
.root
.string
+ 1,
3106 if (hds
->root
.type
== bfd_link_hash_new
)
3108 hds
->root
.type
= bfd_link_hash_undefined
;
3109 hds
->root
.u
.undef
.abfd
= h
->root
.u
.undef
.abfd
;
3111 hds
->flags
|= XCOFF_DESCRIPTOR
;
3112 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
3113 hds
->descriptor
= h
;
3114 h
->descriptor
= hds
;
3117 /* Now, if the descriptor is undefined, import the descriptor
3118 rather than the symbol we were told to import. FIXME: Is
3119 this correct in all cases? */
3120 if (hds
->root
.type
== bfd_link_hash_undefined
)
3124 h
->flags
|= (XCOFF_IMPORT
| syscall_flag
);
3126 if (val
!= (bfd_vma
) -1)
3128 if (h
->root
.type
== bfd_link_hash_defined
3129 && (!bfd_is_abs_symbol (&h
->root
)
3130 || h
->root
.u
.def
.value
!= val
))
3131 (*info
->callbacks
->multiple_definition
) (info
, &h
->root
, output_bfd
,
3132 bfd_abs_section_ptr
, val
);
3134 h
->root
.type
= bfd_link_hash_defined
;
3135 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3136 h
->root
.u
.def
.value
= val
;
3140 if (!xcoff_set_import_path (info
, h
, imppath
, impfile
, impmember
))
3146 /* Export a symbol. */
3149 bfd_xcoff_export_symbol (bfd
*output_bfd
,
3150 struct bfd_link_info
*info
,
3151 struct bfd_link_hash_entry
*harg
)
3153 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3155 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3158 h
->flags
|= XCOFF_EXPORT
;
3160 /* FIXME: I'm not at all sure what syscall is supposed to mean, so
3161 I'm just going to ignore it until somebody explains it. */
3163 /* Make sure we don't garbage collect this symbol. */
3164 if (! xcoff_mark_symbol (info
, h
))
3167 /* If this is a function descriptor, make sure we don't garbage
3168 collect the associated function code. We normally don't have to
3169 worry about this, because the descriptor will be attached to a
3170 section with relocs, but if we are creating the descriptor
3171 ourselves those relocs will not be visible to the mark code. */
3172 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3174 if (! xcoff_mark_symbol (info
, h
->descriptor
))
3181 /* Count a reloc against a symbol. This is called for relocs
3182 generated by the linker script, typically for global constructors
3186 bfd_xcoff_link_count_reloc (bfd
*output_bfd
,
3187 struct bfd_link_info
*info
,
3190 struct xcoff_link_hash_entry
*h
;
3192 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3195 h
= ((struct xcoff_link_hash_entry
*)
3196 bfd_wrapped_link_hash_lookup (output_bfd
, info
, name
, FALSE
, FALSE
,
3200 _bfd_error_handler (_("%s: no such symbol"), name
);
3201 bfd_set_error (bfd_error_no_symbols
);
3205 h
->flags
|= XCOFF_REF_REGULAR
;
3206 if (xcoff_hash_table (info
)->loader_section
)
3208 h
->flags
|= XCOFF_LDREL
;
3209 ++xcoff_hash_table (info
)->ldrel_count
;
3212 /* Mark the symbol to avoid garbage collection. */
3213 if (! xcoff_mark_symbol (info
, h
))
3219 /* This function is called for each symbol to which the linker script
3223 bfd_xcoff_record_link_assignment (bfd
*output_bfd
,
3224 struct bfd_link_info
*info
,
3227 struct xcoff_link_hash_entry
*h
;
3229 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3232 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
, TRUE
,
3237 h
->flags
|= XCOFF_DEF_REGULAR
;
3242 /* An xcoff_link_hash_traverse callback for which DATA points to an
3243 xcoff_loader_info. Mark all symbols that should be automatically
3247 xcoff_mark_auto_exports (struct xcoff_link_hash_entry
*h
, void *data
)
3249 struct xcoff_loader_info
*ldinfo
;
3251 ldinfo
= (struct xcoff_loader_info
*) data
;
3252 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3254 if (!xcoff_mark_symbol (ldinfo
->info
, h
))
3255 ldinfo
->failed
= TRUE
;
3260 /* Add a symbol to the .loader symbols, if necessary. */
3262 /* INPUT_BFD has an external symbol associated with hash table entry H
3263 and csect CSECT. Return true if INPUT_BFD defines H. */
3266 xcoff_final_definition_p (bfd
*input_bfd
, struct xcoff_link_hash_entry
*h
,
3269 switch (h
->root
.type
)
3271 case bfd_link_hash_defined
:
3272 case bfd_link_hash_defweak
:
3273 /* No input bfd owns absolute symbols. They are written by
3274 xcoff_write_global_symbol instead. */
3275 return (!bfd_is_abs_section (csect
)
3276 && h
->root
.u
.def
.section
== csect
);
3278 case bfd_link_hash_common
:
3279 return h
->root
.u
.c
.p
->section
->owner
== input_bfd
;
3281 case bfd_link_hash_undefined
:
3282 case bfd_link_hash_undefweak
:
3283 /* We can't treat undef.abfd as the owner because that bfd
3284 might be a dynamic object. Allow any bfd to claim it. */
3292 /* See if H should have a loader symbol associated with it. */
3295 xcoff_build_ldsym (struct xcoff_loader_info
*ldinfo
,
3296 struct xcoff_link_hash_entry
*h
)
3300 /* Warn if this symbol is exported but not defined. */
3301 if ((h
->flags
& XCOFF_EXPORT
) != 0
3302 && (h
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
3305 (_("warning: attempt to export undefined symbol `%s'"),
3306 h
->root
.root
.string
);
3310 /* We need to add a symbol to the .loader section if it is mentioned
3311 in a reloc which we are copying to the .loader section and it was
3312 not defined or common, or if it is the entry point, or if it is
3314 if (((h
->flags
& XCOFF_LDREL
) == 0
3315 || h
->root
.type
== bfd_link_hash_defined
3316 || h
->root
.type
== bfd_link_hash_defweak
3317 || h
->root
.type
== bfd_link_hash_common
)
3318 && (h
->flags
& XCOFF_ENTRY
) == 0
3319 && (h
->flags
& XCOFF_EXPORT
) == 0)
3322 /* We need to add this symbol to the .loader symbols. */
3324 BFD_ASSERT (h
->ldsym
== NULL
);
3325 amt
= sizeof (struct internal_ldsym
);
3326 h
->ldsym
= bfd_zalloc (ldinfo
->output_bfd
, amt
);
3327 if (h
->ldsym
== NULL
)
3329 ldinfo
->failed
= TRUE
;
3333 if ((h
->flags
& XCOFF_IMPORT
) != 0)
3335 /* Give imported descriptors class XMC_DS rather than XMC_UA. */
3336 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3338 h
->ldsym
->l_ifile
= h
->ldindx
;
3341 /* The first 3 symbol table indices are reserved to indicate the
3342 data, text and bss sections. */
3343 h
->ldindx
= ldinfo
->ldsym_count
+ 3;
3345 ++ldinfo
->ldsym_count
;
3347 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
->output_bfd
, ldinfo
,
3348 h
->ldsym
, h
->root
.root
.string
))
3351 h
->flags
|= XCOFF_BUILT_LDSYM
;
3355 /* An xcoff_htab_traverse callback that is called for each symbol
3356 once garbage collection is complete. */
3359 xcoff_post_gc_symbol (struct xcoff_link_hash_entry
*h
, void * p
)
3361 struct xcoff_loader_info
*ldinfo
= (struct xcoff_loader_info
*) p
;
3363 /* __rtinit, this symbol has special handling. */
3364 if (h
->flags
& XCOFF_RTINIT
)
3367 /* We don't want to garbage collect symbols which are not defined in
3368 XCOFF files. This is a convenient place to mark them. */
3369 if (xcoff_hash_table (ldinfo
->info
)->gc
3370 && (h
->flags
& XCOFF_MARK
) == 0
3371 && (h
->root
.type
== bfd_link_hash_defined
3372 || h
->root
.type
== bfd_link_hash_defweak
)
3373 && (h
->root
.u
.def
.section
->owner
== NULL
3374 || (h
->root
.u
.def
.section
->owner
->xvec
3375 != ldinfo
->info
->output_bfd
->xvec
)))
3376 h
->flags
|= XCOFF_MARK
;
3378 /* Skip discarded symbols. */
3379 if (xcoff_hash_table (ldinfo
->info
)->gc
3380 && (h
->flags
& XCOFF_MARK
) == 0)
3383 /* If this is still a common symbol, and it wasn't garbage
3384 collected, we need to actually allocate space for it in the .bss
3386 if (h
->root
.type
== bfd_link_hash_common
3387 && h
->root
.u
.c
.p
->section
->size
== 0)
3389 BFD_ASSERT (bfd_is_com_section (h
->root
.u
.c
.p
->section
));
3390 h
->root
.u
.c
.p
->section
->size
= h
->root
.u
.c
.size
;
3393 if (xcoff_hash_table (ldinfo
->info
)->loader_section
)
3395 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3396 h
->flags
|= XCOFF_EXPORT
;
3398 if (!xcoff_build_ldsym (ldinfo
, h
))
3405 /* INPUT_BFD includes XCOFF symbol ISYM, which is associated with linker
3406 hash table entry H and csect CSECT. AUX contains ISYM's auxillary
3407 csect information, if any. NAME is the function's name if the name
3408 is stored in the .debug section, otherwise it is null.
3410 Return 1 if we should include an appropriately-adjusted ISYM
3411 in the output file, 0 if we should discard ISYM, or -1 if an
3415 xcoff_keep_symbol_p (struct bfd_link_info
*info
, bfd
*input_bfd
,
3416 struct internal_syment
*isym
,
3417 union internal_auxent
*aux
,
3418 struct xcoff_link_hash_entry
*h
,
3419 asection
*csect
, const char *name
)
3423 /* If we are skipping this csect, we want to strip the symbol too. */
3427 /* Likewise if we garbage-collected the csect. */
3428 if (xcoff_hash_table (info
)->gc
3429 && !bfd_is_abs_section (csect
)
3430 && !bfd_is_und_section (csect
)
3431 && (csect
->flags
& SEC_MARK
) == 0)
3434 /* An XCOFF linker always removes C_STAT symbols. */
3435 if (isym
->n_sclass
== C_STAT
)
3438 /* We generate the TOC anchor separately. */
3439 if (isym
->n_sclass
== C_HIDEXT
3440 && aux
->x_csect
.x_smclas
== XMC_TC0
)
3443 /* If we are stripping all symbols, we want to discard this one. */
3444 if (info
->strip
== strip_all
)
3447 /* Discard symbols that are defined elsewhere. */
3448 if (EXTERN_SYM_P (isym
->n_sclass
))
3450 if ((h
->flags
& XCOFF_ALLOCATED
) != 0)
3452 if (!xcoff_final_definition_p (input_bfd
, h
, csect
))
3456 /* If we're discarding local symbols, check whether ISYM is local. */
3457 smtyp
= SMTYP_SMTYP (aux
->x_csect
.x_smtyp
);
3458 if (info
->discard
== discard_all
3459 && !EXTERN_SYM_P (isym
->n_sclass
)
3460 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
))
3463 /* If we're stripping debugging symbols, check whether ISYM is one. */
3464 if (info
->strip
== strip_debugger
3465 && isym
->n_scnum
== N_DEBUG
)
3468 /* If we are stripping symbols based on name, check how ISYM's
3469 name should be handled. */
3470 if (info
->strip
== strip_some
3471 || info
->discard
== discard_l
)
3473 char buf
[SYMNMLEN
+ 1];
3477 name
= _bfd_coff_internal_syment_name (input_bfd
, isym
, buf
);
3482 if (info
->strip
== strip_some
3483 && bfd_hash_lookup (info
->keep_hash
, name
, FALSE
, FALSE
) == NULL
)
3486 if (info
->discard
== discard_l
3487 && !EXTERN_SYM_P (isym
->n_sclass
)
3488 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
)
3489 && bfd_is_local_label_name (input_bfd
, name
))
3496 /* Lay out the .loader section, filling in the header and the import paths.
3497 LIBPATH is as for bfd_xcoff_size_dynamic_sections. */
3500 xcoff_build_loader_section (struct xcoff_loader_info
*ldinfo
,
3501 const char *libpath
)
3504 struct xcoff_link_hash_table
*htab
;
3505 struct internal_ldhdr
*ldhdr
;
3506 struct xcoff_import_file
*fl
;
3507 bfd_size_type stoff
;
3508 size_t impsize
, impcount
;
3512 /* Work out the size of the import file names. Each import file ID
3513 consists of three null terminated strings: the path, the file
3514 name, and the archive member name. The first entry in the list
3515 of names is the path to use to find objects, which the linker has
3516 passed in as the libpath argument. For some reason, the path
3517 entry in the other import file names appears to always be empty. */
3518 output_bfd
= ldinfo
->output_bfd
;
3519 htab
= xcoff_hash_table (ldinfo
->info
);
3520 impsize
= strlen (libpath
) + 3;
3522 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3525 impsize
+= (strlen (fl
->path
)
3527 + strlen (fl
->member
)
3531 /* Set up the .loader section header. */
3532 ldhdr
= &htab
->ldhdr
;
3533 ldhdr
->l_version
= bfd_xcoff_ldhdr_version(output_bfd
);
3534 ldhdr
->l_nsyms
= ldinfo
->ldsym_count
;
3535 ldhdr
->l_nreloc
= htab
->ldrel_count
;
3536 ldhdr
->l_istlen
= impsize
;
3537 ldhdr
->l_nimpid
= impcount
;
3538 ldhdr
->l_impoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3539 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
)
3540 + ldhdr
->l_nreloc
* bfd_xcoff_ldrelsz (output_bfd
));
3541 ldhdr
->l_stlen
= ldinfo
->string_size
;
3542 stoff
= ldhdr
->l_impoff
+ impsize
;
3543 if (ldinfo
->string_size
== 0)
3546 ldhdr
->l_stoff
= stoff
;
3548 /* 64 bit elements to ldhdr
3549 The swap out routine for 32 bit will ignore them.
3550 Nothing fancy, symbols come after the header and relocs come
3552 ldhdr
->l_symoff
= bfd_xcoff_ldhdrsz (output_bfd
);
3553 ldhdr
->l_rldoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3554 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
));
3556 /* We now know the final size of the .loader section. Allocate
3558 lsec
= htab
->loader_section
;
3559 lsec
->size
= stoff
+ ldhdr
->l_stlen
;
3560 lsec
->contents
= bfd_zalloc (output_bfd
, lsec
->size
);
3561 if (lsec
->contents
== NULL
)
3564 /* Set up the header. */
3565 bfd_xcoff_swap_ldhdr_out (output_bfd
, ldhdr
, lsec
->contents
);
3567 /* Set up the import file names. */
3568 out
= (char *) lsec
->contents
+ ldhdr
->l_impoff
;
3569 strcpy (out
, libpath
);
3570 out
+= strlen (libpath
) + 1;
3573 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3578 while ((*out
++ = *s
++) != '\0')
3581 while ((*out
++ = *s
++) != '\0')
3584 while ((*out
++ = *s
++) != '\0')
3588 BFD_ASSERT ((bfd_size_type
) ((bfd_byte
*) out
- lsec
->contents
) == stoff
);
3590 /* Set up the symbol string table. */
3591 if (ldinfo
->string_size
> 0)
3593 memcpy (out
, ldinfo
->strings
, ldinfo
->string_size
);
3594 free (ldinfo
->strings
);
3595 ldinfo
->strings
= NULL
;
3598 /* We can't set up the symbol table or the relocs yet, because we
3599 don't yet know the final position of the various sections. The
3600 .loader symbols are written out when the corresponding normal
3601 symbols are written out in xcoff_link_input_bfd or
3602 xcoff_write_global_symbol. The .loader relocs are written out
3603 when the corresponding normal relocs are handled in
3604 xcoff_link_input_bfd. */
3609 /* Build the .loader section. This is called by the XCOFF linker
3610 emulation before_allocation routine. We must set the size of the
3611 .loader section before the linker lays out the output file.
3612 LIBPATH is the library path to search for shared objects; this is
3613 normally built from the -L arguments passed to the linker. ENTRY
3614 is the name of the entry point symbol (the -e linker option).
3615 FILE_ALIGN is the alignment to use for sections within the file
3616 (the -H linker option). MAXSTACK is the maximum stack size (the
3617 -bmaxstack linker option). MAXDATA is the maximum data size (the
3618 -bmaxdata linker option). GC is whether to do garbage collection
3619 (the -bgc linker option). MODTYPE is the module type (the
3620 -bmodtype linker option). TEXTRO is whether the text section must
3621 be read only (the -btextro linker option). AUTO_EXPORT_FLAGS
3622 is a mask of XCOFF_EXPALL and XCOFF_EXPFULL. SPECIAL_SECTIONS
3623 is set by this routine to csects with magic names like _end. */
3626 bfd_xcoff_size_dynamic_sections (bfd
*output_bfd
,
3627 struct bfd_link_info
*info
,
3628 const char *libpath
,
3630 unsigned long file_align
,
3631 unsigned long maxstack
,
3632 unsigned long maxdata
,
3636 unsigned int auto_export_flags
,
3637 asection
**special_sections
,
3640 struct xcoff_loader_info ldinfo
;
3644 struct bfd_strtab_hash
*debug_strtab
;
3645 bfd_byte
*debug_contents
= NULL
;
3648 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3650 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3651 special_sections
[i
] = NULL
;
3655 ldinfo
.failed
= FALSE
;
3656 ldinfo
.output_bfd
= output_bfd
;
3658 ldinfo
.auto_export_flags
= auto_export_flags
;
3659 ldinfo
.ldsym_count
= 0;
3660 ldinfo
.string_size
= 0;
3661 ldinfo
.strings
= NULL
;
3662 ldinfo
.string_alc
= 0;
3664 xcoff_data (output_bfd
)->maxstack
= maxstack
;
3665 xcoff_data (output_bfd
)->maxdata
= maxdata
;
3666 xcoff_data (output_bfd
)->modtype
= modtype
;
3668 xcoff_hash_table (info
)->file_align
= file_align
;
3669 xcoff_hash_table (info
)->textro
= textro
;
3670 xcoff_hash_table (info
)->rtld
= rtld
;
3673 if (xcoff_hash_table (info
)->loader_section
3674 && (info
->init_function
|| info
->fini_function
|| rtld
))
3676 struct xcoff_link_hash_entry
*hsym
;
3677 struct internal_ldsym
*ldsym
;
3679 hsym
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3680 "__rtinit", FALSE
, FALSE
, TRUE
);
3684 (_("error: undefined symbol __rtinit"));
3688 xcoff_mark_symbol (info
, hsym
);
3689 hsym
->flags
|= (XCOFF_DEF_REGULAR
| XCOFF_RTINIT
);
3691 /* __rtinit initialized. */
3692 amt
= sizeof (* ldsym
);
3693 ldsym
= bfd_malloc (amt
);
3695 ldsym
->l_value
= 0; /* Will be filled in later. */
3696 ldsym
->l_scnum
= 2; /* Data section. */
3697 ldsym
->l_smtype
= XTY_SD
; /* Csect section definition. */
3698 ldsym
->l_smclas
= 5; /* .rw. */
3699 ldsym
->l_ifile
= 0; /* Special system loader symbol. */
3700 ldsym
->l_parm
= 0; /* NA. */
3702 /* Force __rtinit to be the first symbol in the loader symbol table
3703 See xcoff_build_ldsyms
3705 The first 3 symbol table indices are reserved to indicate the data,
3706 text and bss sections. */
3707 BFD_ASSERT (0 == ldinfo
.ldsym_count
);
3710 ldinfo
.ldsym_count
= 1;
3711 hsym
->ldsym
= ldsym
;
3713 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
.output_bfd
, &ldinfo
,
3714 hsym
->ldsym
, hsym
->root
.root
.string
))
3717 /* This symbol is written out by xcoff_write_global_symbol
3718 Set stuff up so xcoff_write_global_symbol logic works. */
3719 hsym
->flags
|= XCOFF_DEF_REGULAR
| XCOFF_MARK
;
3720 hsym
->root
.type
= bfd_link_hash_defined
;
3721 hsym
->root
.u
.def
.value
= 0;
3724 /* Garbage collect unused sections. */
3725 if (bfd_link_relocatable (info
) || !gc
)
3728 xcoff_hash_table (info
)->gc
= FALSE
;
3730 /* We still need to call xcoff_mark, in order to set ldrel_count
3732 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3736 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3738 /* We shouldn't unconditionaly mark the TOC section.
3739 The output file should only have a TOC if either
3740 (a) one of the input files did or (b) we end up
3741 creating TOC references as part of the link process. */
3742 if (o
!= xcoff_hash_table (info
)->toc_section
3743 && (o
->flags
& SEC_MARK
) == 0)
3745 if (! xcoff_mark (info
, o
))
3754 && !xcoff_mark_symbol_by_name (info
, entry
, XCOFF_ENTRY
))
3756 if (info
->init_function
!= NULL
3757 && !xcoff_mark_symbol_by_name (info
, info
->init_function
, 0))
3759 if (info
->fini_function
!= NULL
3760 && !xcoff_mark_symbol_by_name (info
, info
->fini_function
, 0))
3762 if (auto_export_flags
!= 0)
3764 xcoff_link_hash_traverse (xcoff_hash_table (info
),
3765 xcoff_mark_auto_exports
, &ldinfo
);
3770 xcoff_hash_table (info
)->gc
= TRUE
;
3773 /* Return special sections to the caller. */
3774 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3776 sec
= xcoff_hash_table (info
)->special_sections
[i
];
3780 && (sec
->flags
& SEC_MARK
) == 0)
3783 special_sections
[i
] = sec
;
3786 if (info
->input_bfds
== NULL
)
3787 /* I'm not sure what to do in this bizarre case. */
3790 xcoff_link_hash_traverse (xcoff_hash_table (info
), xcoff_post_gc_symbol
,
3795 if (xcoff_hash_table (info
)->loader_section
3796 && !xcoff_build_loader_section (&ldinfo
, libpath
))
3799 /* Allocate space for the magic sections. */
3800 sec
= xcoff_hash_table (info
)->linkage_section
;
3803 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3804 if (sec
->contents
== NULL
)
3807 sec
= xcoff_hash_table (info
)->toc_section
;
3810 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3811 if (sec
->contents
== NULL
)
3814 sec
= xcoff_hash_table (info
)->descriptor_section
;
3817 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3818 if (sec
->contents
== NULL
)
3822 /* Now that we've done garbage collection, decide which symbols to keep,
3823 and figure out the contents of the .debug section. */
3824 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
3826 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3829 bfd_size_type symcount
;
3832 unsigned int *lineno_counts
;
3833 struct xcoff_link_hash_entry
**sym_hash
;
3834 bfd_byte
*esym
, *esymend
;
3835 bfd_size_type symesz
;
3837 if (sub
->xvec
!= info
->output_bfd
->xvec
)
3840 if ((sub
->flags
& DYNAMIC
) != 0
3841 && !info
->static_link
)
3844 if (! _bfd_coff_get_external_symbols (sub
))
3847 symcount
= obj_raw_syment_count (sub
);
3848 debug_index
= bfd_zalloc (sub
, symcount
* sizeof (long));
3849 if (debug_index
== NULL
)
3851 xcoff_data (sub
)->debug_indices
= debug_index
;
3853 if (info
->strip
== strip_all
3854 || info
->strip
== strip_debugger
3855 || info
->discard
== discard_all
)
3856 /* We're stripping all debugging information, so there's no need
3857 to read SUB's .debug section. */
3861 /* Grab the contents of SUB's .debug section, if any. */
3862 subdeb
= bfd_get_section_by_name (sub
, ".debug");
3863 if (subdeb
!= NULL
&& subdeb
->size
> 0)
3865 /* We use malloc and copy the names into the debug
3866 stringtab, rather than bfd_alloc, because I expect
3867 that, when linking many files together, many of the
3868 strings will be the same. Storing the strings in the
3869 hash table should save space in this case. */
3870 if (!bfd_malloc_and_get_section (sub
, subdeb
, &debug_contents
))
3875 csectpp
= xcoff_data (sub
)->csects
;
3876 lineno_counts
= xcoff_data (sub
)->lineno_counts
;
3877 sym_hash
= obj_xcoff_sym_hashes (sub
);
3878 symesz
= bfd_coff_symesz (sub
);
3879 esym
= (bfd_byte
*) obj_coff_external_syms (sub
);
3880 esymend
= esym
+ symcount
* symesz
;
3882 while (esym
< esymend
)
3884 struct internal_syment sym
;
3885 union internal_auxent aux
;
3890 bfd_coff_swap_sym_in (sub
, esym
, &sym
);
3892 /* Read in the csect information, if any. */
3893 if (CSECT_SYM_P (sym
.n_sclass
))
3895 BFD_ASSERT (sym
.n_numaux
> 0);
3896 bfd_coff_swap_aux_in (sub
, esym
+ symesz
* sym
.n_numaux
,
3897 sym
.n_type
, sym
.n_sclass
,
3898 sym
.n_numaux
- 1, sym
.n_numaux
, &aux
);
3901 /* If this symbol's name is stored in the debug section,
3902 get a pointer to it. */
3903 if (debug_contents
!= NULL
3904 && sym
._n
._n_n
._n_zeroes
== 0
3905 && bfd_coff_symname_in_debug (sub
, &sym
))
3906 name
= (const char *) debug_contents
+ sym
._n
._n_n
._n_offset
;
3910 /* Decide whether to copy this symbol to the output file. */
3912 keep_p
= xcoff_keep_symbol_p (info
, sub
, &sym
, &aux
,
3913 *sym_hash
, csect
, name
);
3918 /* Use a debug_index of -2 to record that a symbol should
3923 /* See whether we should store the symbol name in the
3924 output .debug section. */
3929 indx
= _bfd_stringtab_add (debug_strtab
, name
, TRUE
, TRUE
);
3930 if (indx
== (bfd_size_type
) -1)
3932 *debug_index
= indx
;
3937 (*sym_hash
)->flags
|= XCOFF_ALLOCATED
;
3938 if (*lineno_counts
> 0)
3939 csect
->output_section
->lineno_count
+= *lineno_counts
;
3942 esym
+= (sym
.n_numaux
+ 1) * symesz
;
3943 csectpp
+= sym
.n_numaux
+ 1;
3944 sym_hash
+= sym
.n_numaux
+ 1;
3945 lineno_counts
+= sym
.n_numaux
+ 1;
3946 debug_index
+= sym
.n_numaux
+ 1;
3951 free (debug_contents
);
3952 debug_contents
= NULL
;
3954 /* Clear the size of subdeb, so that it is not included directly
3955 in the output file. */
3959 if (! info
->keep_memory
)
3961 if (! _bfd_coff_free_symbols (sub
))
3966 if (info
->strip
!= strip_all
)
3967 xcoff_hash_table (info
)->debug_section
->size
=
3968 _bfd_stringtab_size (debug_strtab
);
3973 if (ldinfo
.strings
!= NULL
)
3974 free (ldinfo
.strings
);
3975 if (debug_contents
!= NULL
)
3976 free (debug_contents
);
3981 bfd_xcoff_link_generate_rtinit (bfd
*abfd
,
3986 struct bfd_in_memory
*bim
;
3988 bim
= bfd_malloc ((bfd_size_type
) sizeof (* bim
));
3995 abfd
->link
.next
= 0;
3996 abfd
->format
= bfd_object
;
3997 abfd
->iostream
= (void *) bim
;
3998 abfd
->flags
= BFD_IN_MEMORY
;
3999 abfd
->iovec
= &_bfd_memory_iovec
;
4000 abfd
->direction
= write_direction
;
4004 if (! bfd_xcoff_generate_rtinit (abfd
, init
, fini
, rtld
))
4007 /* need to reset to unknown or it will not be read back in correctly */
4008 abfd
->format
= bfd_unknown
;
4009 abfd
->direction
= read_direction
;
4015 /* Return the section that defines H. Return null if no section does. */
4018 xcoff_symbol_section (struct xcoff_link_hash_entry
*h
)
4020 switch (h
->root
.type
)
4022 case bfd_link_hash_defined
:
4023 case bfd_link_hash_defweak
:
4024 return h
->root
.u
.def
.section
;
4026 case bfd_link_hash_common
:
4027 return h
->root
.u
.c
.p
->section
;
4034 /* Add a .loader relocation for input relocation IREL. If the loader
4035 relocation should be against an output section, HSEC points to the
4036 input section that IREL is against, otherwise HSEC is null. H is the
4037 symbol that IREL is against, or null if it isn't against a global symbol.
4038 REFERENCE_BFD is the bfd to use in error messages about the relocation. */
4041 xcoff_create_ldrel (bfd
*output_bfd
, struct xcoff_final_link_info
*flinfo
,
4042 asection
*output_section
, bfd
*reference_bfd
,
4043 struct internal_reloc
*irel
, asection
*hsec
,
4044 struct xcoff_link_hash_entry
*h
)
4046 struct internal_ldrel ldrel
;
4048 ldrel
.l_vaddr
= irel
->r_vaddr
;
4051 const char *secname
;
4053 secname
= hsec
->output_section
->name
;
4054 if (strcmp (secname
, ".text") == 0)
4056 else if (strcmp (secname
, ".data") == 0)
4058 else if (strcmp (secname
, ".bss") == 0)
4063 /* xgettext:c-format */
4064 (_("%pB: loader reloc in unrecognized section `%s'"),
4065 reference_bfd
, secname
);
4066 bfd_set_error (bfd_error_nonrepresentable_section
);
4075 /* xgettext:c-format */
4076 (_("%pB: `%s' in loader reloc but not loader sym"),
4077 reference_bfd
, h
->root
.root
.string
);
4078 bfd_set_error (bfd_error_bad_value
);
4081 ldrel
.l_symndx
= h
->ldindx
;
4084 ldrel
.l_symndx
= -(bfd_size_type
) 1;
4086 ldrel
.l_rtype
= (irel
->r_size
<< 8) | irel
->r_type
;
4087 ldrel
.l_rsecnm
= output_section
->target_index
;
4088 if (xcoff_hash_table (flinfo
->info
)->textro
4089 && strcmp (output_section
->name
, ".text") == 0)
4092 /* xgettext:c-format */
4093 (_("%pB: loader reloc in read-only section %pA"),
4094 reference_bfd
, output_section
);
4095 bfd_set_error (bfd_error_invalid_operation
);
4098 bfd_xcoff_swap_ldrel_out (output_bfd
, &ldrel
, flinfo
->ldrel
);
4099 flinfo
->ldrel
+= bfd_xcoff_ldrelsz (output_bfd
);
4103 /* Link an input file into the linker output file. This function
4104 handles all the sections and relocations of the input file at once. */
4107 xcoff_link_input_bfd (struct xcoff_final_link_info
*flinfo
,
4111 const char *strings
;
4112 bfd_size_type syment_base
;
4113 unsigned int n_tmask
;
4114 unsigned int n_btshft
;
4115 bfd_boolean copy
, hash
;
4116 bfd_size_type isymesz
;
4117 bfd_size_type osymesz
;
4118 bfd_size_type linesz
;
4121 struct xcoff_link_hash_entry
**sym_hash
;
4122 struct internal_syment
*isymp
;
4124 unsigned int *lineno_counts
;
4127 unsigned long output_index
;
4131 bfd_boolean keep_syms
;
4134 /* We can just skip DYNAMIC files, unless this is a static link. */
4135 if ((input_bfd
->flags
& DYNAMIC
) != 0
4136 && ! flinfo
->info
->static_link
)
4139 /* Move all the symbols to the output file. */
4140 output_bfd
= flinfo
->output_bfd
;
4142 syment_base
= obj_raw_syment_count (output_bfd
);
4143 isymesz
= bfd_coff_symesz (input_bfd
);
4144 osymesz
= bfd_coff_symesz (output_bfd
);
4145 linesz
= bfd_coff_linesz (input_bfd
);
4146 BFD_ASSERT (linesz
== bfd_coff_linesz (output_bfd
));
4148 n_tmask
= coff_data (input_bfd
)->local_n_tmask
;
4149 n_btshft
= coff_data (input_bfd
)->local_n_btshft
;
4151 /* Define macros so that ISFCN, et. al., macros work correctly. */
4152 #define N_TMASK n_tmask
4153 #define N_BTSHFT n_btshft
4156 if (! flinfo
->info
->keep_memory
)
4159 if (flinfo
->info
->traditional_format
)
4162 if (! _bfd_coff_get_external_symbols (input_bfd
))
4165 /* Make one pass over the symbols and assign indices to symbols that
4166 we have decided to keep. Also use create .loader symbol information
4167 and update information in hash table entries. */
4168 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4169 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4170 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4171 csectpp
= xcoff_data (input_bfd
)->csects
;
4172 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4173 isymp
= flinfo
->internal_syms
;
4174 indexp
= flinfo
->sym_indices
;
4175 output_index
= syment_base
;
4176 while (esym
< esym_end
)
4178 union internal_auxent aux
;
4182 bfd_coff_swap_sym_in (input_bfd
, (void *) esym
, (void *) isymp
);
4184 /* Read in the csect information, if any. */
4185 if (CSECT_SYM_P (isymp
->n_sclass
))
4187 BFD_ASSERT (isymp
->n_numaux
> 0);
4188 bfd_coff_swap_aux_in (input_bfd
,
4189 (void *) (esym
+ isymesz
* isymp
->n_numaux
),
4190 isymp
->n_type
, isymp
->n_sclass
,
4191 isymp
->n_numaux
- 1, isymp
->n_numaux
,
4194 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
4197 /* If this symbol is in the .loader section, swap out the
4198 .loader symbol information. If this is an external symbol
4199 reference to a defined symbol, though, then wait until we get
4200 to the definition. */
4201 if (EXTERN_SYM_P (isymp
->n_sclass
)
4202 && *sym_hash
!= NULL
4203 && (*sym_hash
)->ldsym
!= NULL
4204 && xcoff_final_definition_p (input_bfd
, *sym_hash
, *csectpp
))
4206 struct xcoff_link_hash_entry
*h
;
4207 struct internal_ldsym
*ldsym
;
4211 if (isymp
->n_scnum
> 0)
4213 ldsym
->l_scnum
= (*csectpp
)->output_section
->target_index
;
4214 ldsym
->l_value
= (isymp
->n_value
4215 + (*csectpp
)->output_section
->vma
4216 + (*csectpp
)->output_offset
4221 ldsym
->l_scnum
= isymp
->n_scnum
;
4222 ldsym
->l_value
= isymp
->n_value
;
4225 ldsym
->l_smtype
= smtyp
;
4226 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
4227 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4228 || (h
->flags
& XCOFF_IMPORT
) != 0)
4229 ldsym
->l_smtype
|= L_IMPORT
;
4230 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
4231 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4232 || (h
->flags
& XCOFF_EXPORT
) != 0)
4233 ldsym
->l_smtype
|= L_EXPORT
;
4234 if ((h
->flags
& XCOFF_ENTRY
) != 0)
4235 ldsym
->l_smtype
|= L_ENTRY
;
4236 if (isymp
->n_sclass
== C_AIX_WEAKEXT
)
4237 ldsym
->l_smtype
|= L_WEAK
;
4239 ldsym
->l_smclas
= aux
.x_csect
.x_smclas
;
4241 if (ldsym
->l_ifile
== (bfd_size_type
) -1)
4243 else if (ldsym
->l_ifile
== 0)
4245 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
4251 if (h
->root
.type
== bfd_link_hash_defined
4252 || h
->root
.type
== bfd_link_hash_defweak
)
4253 impbfd
= h
->root
.u
.def
.section
->owner
;
4254 else if (h
->root
.type
== bfd_link_hash_undefined
4255 || h
->root
.type
== bfd_link_hash_undefweak
)
4256 impbfd
= h
->root
.u
.undef
.abfd
;
4264 BFD_ASSERT (impbfd
->xvec
== flinfo
->output_bfd
->xvec
);
4265 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
4272 BFD_ASSERT (h
->ldindx
>= 0);
4273 bfd_xcoff_swap_ldsym_out (flinfo
->output_bfd
, ldsym
,
4276 * bfd_xcoff_ldsymsz (flinfo
->output_bfd
))));
4279 /* Fill in snentry now that we know the target_index. */
4280 if ((h
->flags
& XCOFF_ENTRY
) != 0
4281 && (h
->root
.type
== bfd_link_hash_defined
4282 || h
->root
.type
== bfd_link_hash_defweak
))
4284 xcoff_data (output_bfd
)->snentry
=
4285 h
->root
.u
.def
.section
->output_section
->target_index
;
4289 add
= 1 + isymp
->n_numaux
;
4291 if (*debug_index
== -2)
4292 /* We've decided to strip this symbol. */
4296 /* Assign the next unused index to this symbol. */
4297 *indexp
= output_index
;
4299 if (EXTERN_SYM_P (isymp
->n_sclass
))
4301 BFD_ASSERT (*sym_hash
!= NULL
);
4302 (*sym_hash
)->indx
= output_index
;
4305 /* If this is a symbol in the TOC which we may have merged
4306 (class XMC_TC), remember the symbol index of the TOC
4308 if (isymp
->n_sclass
== C_HIDEXT
4309 && aux
.x_csect
.x_smclas
== XMC_TC
4310 && *sym_hash
!= NULL
)
4312 BFD_ASSERT (((*sym_hash
)->flags
& XCOFF_SET_TOC
) == 0);
4313 BFD_ASSERT ((*sym_hash
)->toc_section
!= NULL
);
4314 (*sym_hash
)->u
.toc_indx
= output_index
;
4317 output_index
+= add
;
4320 esym
+= add
* isymesz
;
4326 for (--add
; add
> 0; --add
)
4330 /* Now write out the symbols that we decided to keep. */
4332 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4333 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4334 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4335 isymp
= flinfo
->internal_syms
;
4336 indexp
= flinfo
->sym_indices
;
4337 csectpp
= xcoff_data (input_bfd
)->csects
;
4338 lineno_counts
= xcoff_data (input_bfd
)->lineno_counts
;
4339 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4340 outsym
= flinfo
->outsyms
;
4343 while (esym
< esym_end
)
4347 add
= 1 + isymp
->n_numaux
;
4350 esym
+= add
* isymesz
;
4353 struct internal_syment isym
;
4356 /* Adjust the symbol in order to output it. */
4358 if (isym
._n
._n_n
._n_zeroes
== 0
4359 && isym
._n
._n_n
._n_offset
!= 0)
4361 /* This symbol has a long name. Enter it in the string
4362 table we are building. If *debug_index != -1, the
4363 name has already been entered in the .debug section. */
4364 if (*debug_index
>= 0)
4365 isym
._n
._n_n
._n_offset
= *debug_index
;
4371 name
= _bfd_coff_internal_syment_name (input_bfd
, &isym
, NULL
);
4375 indx
= _bfd_stringtab_add (flinfo
->strtab
, name
, hash
, copy
);
4376 if (indx
== (bfd_size_type
) -1)
4378 isym
._n
._n_n
._n_offset
= STRING_SIZE_SIZE
+ indx
;
4382 /* Make __rtinit C_HIDEXT rather than C_EXT. This avoids
4383 multiple definition problems when linking a shared object
4384 statically. (The native linker doesn't enter __rtinit into
4385 the normal table at all, but having a local symbol can make
4386 the objdump output easier to read.) */
4387 if (isym
.n_sclass
== C_EXT
4389 && ((*sym_hash
)->flags
& XCOFF_RTINIT
) != 0)
4390 isym
.n_sclass
= C_HIDEXT
;
4392 /* The value of a C_FILE symbol is the symbol index of the
4393 next C_FILE symbol. The value of the last C_FILE symbol
4394 is -1. We try to get this right, below, just before we
4395 write the symbols out, but in the general case we may
4396 have to write the symbol out twice. */
4397 if (isym
.n_sclass
== C_FILE
)
4399 if (flinfo
->last_file_index
!= -1
4400 && flinfo
->last_file
.n_value
!= (bfd_vma
) *indexp
)
4402 /* We must correct the value of the last C_FILE entry. */
4403 flinfo
->last_file
.n_value
= *indexp
;
4404 if ((bfd_size_type
) flinfo
->last_file_index
>= syment_base
)
4406 /* The last C_FILE symbol is in this input file. */
4407 bfd_coff_swap_sym_out (output_bfd
,
4408 (void *) &flinfo
->last_file
,
4409 (void *) (flinfo
->outsyms
4410 + ((flinfo
->last_file_index
4416 /* We have already written out the last C_FILE
4417 symbol. We need to write it out again. We
4418 borrow *outsym temporarily. */
4421 bfd_coff_swap_sym_out (output_bfd
,
4422 (void *) &flinfo
->last_file
,
4425 pos
= obj_sym_filepos (output_bfd
);
4426 pos
+= flinfo
->last_file_index
* osymesz
;
4427 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4428 || (bfd_bwrite (outsym
, osymesz
, output_bfd
)
4434 flinfo
->last_file_index
= *indexp
;
4435 flinfo
->last_file
= isym
;
4438 /* The value of a C_BINCL or C_EINCL symbol is a file offset
4439 into the line numbers. We update the symbol values when
4440 we handle the line numbers. */
4441 if (isym
.n_sclass
== C_BINCL
4442 || isym
.n_sclass
== C_EINCL
)
4444 isym
.n_value
= flinfo
->line_filepos
;
4447 /* The value of a C_BSTAT symbol is the symbol table
4448 index of the containing csect. */
4449 else if (isym
.n_sclass
== C_BSTAT
)
4453 indx
= isym
.n_value
;
4454 if (indx
< obj_raw_syment_count (input_bfd
))
4458 symindx
= flinfo
->sym_indices
[indx
];
4462 isym
.n_value
= symindx
;
4465 else if (isym
.n_sclass
!= C_ESTAT
4466 && isym
.n_sclass
!= C_DECL
4467 && isym
.n_scnum
> 0)
4469 isym
.n_scnum
= (*csectpp
)->output_section
->target_index
;
4470 isym
.n_value
+= ((*csectpp
)->output_section
->vma
4471 + (*csectpp
)->output_offset
4475 /* Output the symbol. */
4476 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
4481 for (i
= 0; i
< isymp
->n_numaux
&& esym
< esym_end
; i
++)
4483 union internal_auxent aux
;
4485 bfd_coff_swap_aux_in (input_bfd
, (void *) esym
, isymp
->n_type
,
4486 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4489 if (isymp
->n_sclass
== C_FILE
)
4491 /* This is the file name (or some comment put in by
4492 the compiler). If it is long, we must put it in
4493 the string table. */
4494 if (aux
.x_file
.x_n
.x_zeroes
== 0
4495 && aux
.x_file
.x_n
.x_offset
!= 0)
4497 const char *filename
;
4500 BFD_ASSERT (aux
.x_file
.x_n
.x_offset
4501 >= STRING_SIZE_SIZE
);
4502 if (strings
== NULL
)
4504 strings
= _bfd_coff_read_string_table (input_bfd
);
4505 if (strings
== NULL
)
4508 if ((bfd_size_type
) aux
.x_file
.x_n
.x_offset
>= obj_coff_strings_len (input_bfd
))
4509 filename
= _("<corrupt>");
4511 filename
= strings
+ aux
.x_file
.x_n
.x_offset
;
4512 indx
= _bfd_stringtab_add (flinfo
->strtab
, filename
,
4514 if (indx
== (bfd_size_type
) -1)
4516 aux
.x_file
.x_n
.x_offset
= STRING_SIZE_SIZE
+ indx
;
4519 else if (CSECT_SYM_P (isymp
->n_sclass
)
4520 && i
+ 1 == isymp
->n_numaux
)
4523 /* We don't support type checking. I don't know if
4525 aux
.x_csect
.x_parmhash
= 0;
4526 /* I don't think anybody uses these fields, but we'd
4527 better clobber them just in case. */
4528 aux
.x_csect
.x_stab
= 0;
4529 aux
.x_csect
.x_snstab
= 0;
4531 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_LD
)
4535 indx
= aux
.x_csect
.x_scnlen
.l
;
4536 if (indx
< obj_raw_syment_count (input_bfd
))
4540 symindx
= flinfo
->sym_indices
[indx
];
4543 aux
.x_csect
.x_scnlen
.l
= 0;
4547 aux
.x_csect
.x_scnlen
.l
= symindx
;
4552 else if (isymp
->n_sclass
!= C_STAT
|| isymp
->n_type
!= T_NULL
)
4556 if (ISFCN (isymp
->n_type
)
4557 || ISTAG (isymp
->n_sclass
)
4558 || isymp
->n_sclass
== C_BLOCK
4559 || isymp
->n_sclass
== C_FCN
)
4561 indx
= aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
;
4563 && indx
< obj_raw_syment_count (input_bfd
))
4565 /* We look forward through the symbol for
4566 the index of the next symbol we are going
4567 to include. I don't know if this is
4569 while (flinfo
->sym_indices
[indx
] < 0
4570 && indx
< obj_raw_syment_count (input_bfd
))
4572 if (indx
>= obj_raw_syment_count (input_bfd
))
4573 indx
= output_index
;
4575 indx
= flinfo
->sym_indices
[indx
];
4576 aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= indx
;
4581 indx
= aux
.x_sym
.x_tagndx
.l
;
4582 if (indx
> 0 && indx
< obj_raw_syment_count (input_bfd
))
4586 symindx
= flinfo
->sym_indices
[indx
];
4588 aux
.x_sym
.x_tagndx
.l
= 0;
4590 aux
.x_sym
.x_tagndx
.l
= symindx
;
4595 /* Copy over the line numbers, unless we are stripping
4596 them. We do this on a symbol by symbol basis in
4597 order to more easily handle garbage collection. */
4598 if (CSECT_SYM_P (isymp
->n_sclass
)
4600 && isymp
->n_numaux
> 1
4601 && ISFCN (isymp
->n_type
)
4602 && aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
4604 if (*lineno_counts
== 0)
4605 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= 0;
4608 asection
*enclosing
;
4609 unsigned int enc_count
;
4610 bfd_signed_vma linoff
;
4611 struct internal_lineno lin
;
4618 /* Read in the enclosing section's line-number
4619 information, if we haven't already. */
4621 enclosing
= xcoff_section_data (abfd
, o
)->enclosing
;
4622 enc_count
= xcoff_section_data (abfd
, o
)->lineno_count
;
4623 if (oline
!= enclosing
)
4625 pos
= enclosing
->line_filepos
;
4626 amt
= linesz
* enc_count
;
4627 if (bfd_seek (input_bfd
, pos
, SEEK_SET
) != 0
4628 || (bfd_bread (flinfo
->linenos
, amt
, input_bfd
)
4634 /* Copy across the first entry, adjusting its
4636 linoff
= (aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
4637 - enclosing
->line_filepos
);
4638 linp
= flinfo
->linenos
+ linoff
;
4639 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4640 lin
.l_addr
.l_symndx
= *indexp
;
4641 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4643 /* Copy the other entries, adjusting their addresses. */
4644 linpend
= linp
+ *lineno_counts
* linesz
;
4645 offset
= (o
->output_section
->vma
4648 for (linp
+= linesz
; linp
< linpend
; linp
+= linesz
)
4650 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4651 lin
.l_addr
.l_paddr
+= offset
;
4652 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4655 /* Write out the entries we've just processed. */
4656 pos
= (o
->output_section
->line_filepos
4657 + o
->output_section
->lineno_count
* linesz
);
4658 amt
= linesz
* *lineno_counts
;
4659 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4660 || bfd_bwrite (flinfo
->linenos
+ linoff
,
4661 amt
, output_bfd
) != amt
)
4663 o
->output_section
->lineno_count
+= *lineno_counts
;
4665 /* Record the offset of the symbol's line numbers
4666 in the output file. */
4667 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= pos
;
4671 struct internal_syment
*iisp
, *iispend
;
4674 bfd_vma range_start
, range_end
;
4677 /* Update any C_BINCL or C_EINCL symbols
4678 that refer to a line number in the
4679 range we just output. */
4680 iisp
= flinfo
->internal_syms
;
4681 iispend
= iisp
+ obj_raw_syment_count (input_bfd
);
4682 iindp
= flinfo
->sym_indices
;
4683 oos
= flinfo
->outsyms
;
4684 range_start
= enclosing
->line_filepos
+ linoff
;
4685 range_end
= range_start
+ *lineno_counts
* linesz
;
4686 while (iisp
< iispend
)
4689 && (iisp
->n_sclass
== C_BINCL
4690 || iisp
->n_sclass
== C_EINCL
)
4691 && iisp
->n_value
>= range_start
4692 && iisp
->n_value
< range_end
)
4694 struct internal_syment iis
;
4696 bfd_coff_swap_sym_in (output_bfd
, oos
, &iis
);
4697 iis
.n_value
= (iisp
->n_value
4700 bfd_coff_swap_sym_out (output_bfd
,
4705 iiadd
= 1 + iisp
->n_numaux
;
4707 oos
+= iiadd
* osymesz
;
4715 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, isymp
->n_type
,
4716 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4727 lineno_counts
+= add
;
4731 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
4732 symbol will be the first symbol in the next input file. In the
4733 normal case, this will save us from writing out the C_FILE symbol
4735 if (flinfo
->last_file_index
!= -1
4736 && (bfd_size_type
) flinfo
->last_file_index
>= syment_base
)
4738 flinfo
->last_file
.n_value
= output_index
;
4739 bfd_coff_swap_sym_out (output_bfd
, (void *) &flinfo
->last_file
,
4740 (void *) (flinfo
->outsyms
4741 + ((flinfo
->last_file_index
- syment_base
)
4745 /* Write the modified symbols to the output file. */
4746 if (outsym
> flinfo
->outsyms
)
4748 file_ptr pos
= obj_sym_filepos (output_bfd
) + syment_base
* osymesz
;
4749 bfd_size_type amt
= outsym
- flinfo
->outsyms
;
4750 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4751 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
4754 BFD_ASSERT ((obj_raw_syment_count (output_bfd
)
4755 + (outsym
- flinfo
->outsyms
) / osymesz
)
4758 obj_raw_syment_count (output_bfd
) = output_index
;
4761 /* Don't let the linker relocation routines discard the symbols. */
4762 keep_syms
= obj_coff_keep_syms (input_bfd
);
4763 obj_coff_keep_syms (input_bfd
) = TRUE
;
4765 /* Relocate the contents of each section. */
4766 for (o
= input_bfd
->sections
; o
!= NULL
; o
= o
->next
)
4770 if (! o
->linker_mark
)
4771 /* This section was omitted from the link. */
4774 if ((o
->flags
& SEC_HAS_CONTENTS
) == 0
4776 || (o
->flags
& SEC_IN_MEMORY
) != 0)
4779 /* We have set filepos correctly for the sections we created to
4780 represent csects, so bfd_get_section_contents should work. */
4781 if (coff_section_data (input_bfd
, o
) != NULL
4782 && coff_section_data (input_bfd
, o
)->contents
!= NULL
)
4783 contents
= coff_section_data (input_bfd
, o
)->contents
;
4786 bfd_size_type sz
= o
->rawsize
? o
->rawsize
: o
->size
;
4787 if (!bfd_get_section_contents (input_bfd
, o
, flinfo
->contents
, 0, sz
))
4789 contents
= flinfo
->contents
;
4792 if ((o
->flags
& SEC_RELOC
) != 0)
4795 struct internal_reloc
*internal_relocs
;
4796 struct internal_reloc
*irel
;
4798 struct internal_reloc
*irelend
;
4799 struct xcoff_link_hash_entry
**rel_hash
;
4802 /* Read in the relocs. */
4803 target_index
= o
->output_section
->target_index
;
4804 internal_relocs
= (xcoff_read_internal_relocs
4805 (input_bfd
, o
, FALSE
, flinfo
->external_relocs
,
4807 (flinfo
->section_info
[target_index
].relocs
4808 + o
->output_section
->reloc_count
)));
4809 if (internal_relocs
== NULL
)
4812 /* Call processor specific code to relocate the section
4814 if (! bfd_coff_relocate_section (output_bfd
, flinfo
->info
,
4818 flinfo
->internal_syms
,
4819 xcoff_data (input_bfd
)->csects
))
4822 offset
= o
->output_section
->vma
+ o
->output_offset
- o
->vma
;
4823 irel
= internal_relocs
;
4824 irelend
= irel
+ o
->reloc_count
;
4825 rel_hash
= (flinfo
->section_info
[target_index
].rel_hashes
4826 + o
->output_section
->reloc_count
);
4827 for (; irel
< irelend
; irel
++, rel_hash
++)
4829 struct xcoff_link_hash_entry
*h
= NULL
;
4833 /* Adjust the reloc address and symbol index. */
4835 irel
->r_vaddr
+= offset
;
4837 r_symndx
= irel
->r_symndx
;
4842 h
= obj_xcoff_sym_hashes (input_bfd
)[r_symndx
];
4844 if (r_symndx
!= -1 && flinfo
->info
->strip
!= strip_all
)
4847 && h
->smclas
!= XMC_TD
4848 && (irel
->r_type
== R_TOC
4849 || irel
->r_type
== R_GL
4850 || irel
->r_type
== R_TCL
4851 || irel
->r_type
== R_TRL
4852 || irel
->r_type
== R_TRLA
))
4854 /* This is a TOC relative reloc with a symbol
4855 attached. The symbol should be the one which
4856 this reloc is for. We want to make this
4857 reloc against the TOC address of the symbol,
4858 not the symbol itself. */
4859 BFD_ASSERT (h
->toc_section
!= NULL
);
4860 BFD_ASSERT ((h
->flags
& XCOFF_SET_TOC
) == 0);
4861 if (h
->u
.toc_indx
!= -1)
4862 irel
->r_symndx
= h
->u
.toc_indx
;
4865 struct xcoff_toc_rel_hash
*n
;
4866 struct xcoff_link_section_info
*si
;
4870 n
= bfd_alloc (flinfo
->output_bfd
, amt
);
4873 si
= flinfo
->section_info
+ target_index
;
4874 n
->next
= si
->toc_rel_hashes
;
4877 si
->toc_rel_hashes
= n
;
4882 /* This is a global symbol. */
4884 irel
->r_symndx
= h
->indx
;
4887 /* This symbol is being written at the end
4888 of the file, and we do not yet know the
4889 symbol index. We save the pointer to the
4890 hash table entry in the rel_hash list.
4891 We set the indx field to -2 to indicate
4892 that this symbol must not be stripped. */
4901 indx
= flinfo
->sym_indices
[r_symndx
];
4905 struct internal_syment
*is
;
4907 /* Relocations against a TC0 TOC anchor are
4908 automatically transformed to be against
4909 the TOC anchor in the output file. */
4910 is
= flinfo
->internal_syms
+ r_symndx
;
4911 if (is
->n_sclass
== C_HIDEXT
4912 && is
->n_numaux
> 0)
4915 union internal_auxent aux
;
4919 obj_coff_external_syms (input_bfd
))
4920 + ((r_symndx
+ is
->n_numaux
)
4922 bfd_coff_swap_aux_in (input_bfd
, auxptr
,
4923 is
->n_type
, is
->n_sclass
,
4927 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_SD
4928 && aux
.x_csect
.x_smclas
== XMC_TC0
)
4929 indx
= flinfo
->toc_symindx
;
4934 irel
->r_symndx
= indx
;
4938 struct internal_syment
*is
;
4941 char buf
[SYMNMLEN
+ 1];
4943 /* This reloc is against a symbol we are
4944 stripping. It would be possible to handle
4945 this case, but I don't think it's worth it. */
4946 is
= flinfo
->internal_syms
+ r_symndx
;
4948 if (is
->n_sclass
!= C_DWARF
)
4950 name
= (_bfd_coff_internal_syment_name
4951 (input_bfd
, is
, buf
));
4956 (*flinfo
->info
->callbacks
->unattached_reloc
)
4957 (flinfo
->info
, name
,
4958 input_bfd
, o
, irel
->r_vaddr
);
4964 if ((o
->flags
& SEC_DEBUGGING
) == 0
4965 && xcoff_need_ldrel_p (flinfo
->info
, irel
, h
))
4972 sec
= xcoff_data (input_bfd
)->csects
[r_symndx
];
4974 sec
= xcoff_symbol_section (h
);
4975 if (!xcoff_create_ldrel (output_bfd
, flinfo
,
4976 o
->output_section
, input_bfd
,
4982 o
->output_section
->reloc_count
+= o
->reloc_count
;
4985 /* Write out the modified section contents. */
4986 if (! bfd_set_section_contents (output_bfd
, o
->output_section
,
4987 contents
, (file_ptr
) o
->output_offset
,
4992 obj_coff_keep_syms (input_bfd
) = keep_syms
;
4994 if (! flinfo
->info
->keep_memory
)
4996 if (! _bfd_coff_free_symbols (input_bfd
))
5003 obj_coff_keep_syms (input_bfd
) = keep_syms
;
5010 /* Sort relocs by VMA. This is called via qsort. */
5013 xcoff_sort_relocs (const void * p1
, const void * p2
)
5015 const struct internal_reloc
*r1
= (const struct internal_reloc
*) p1
;
5016 const struct internal_reloc
*r2
= (const struct internal_reloc
*) p2
;
5018 if (r1
->r_vaddr
> r2
->r_vaddr
)
5020 else if (r1
->r_vaddr
< r2
->r_vaddr
)
5026 /* Return true if section SEC is a TOC section. */
5028 static inline bfd_boolean
5029 xcoff_toc_section_p (asection
*sec
)
5034 if (name
[0] == '.' && name
[1] == 't')
5038 if (name
[3] == '0' && name
[4] == 0)
5043 if (name
[2] == 'd' && name
[3] == 0)
5049 /* See if the link requires a TOC (it usually does!). If so, find a
5050 good place to put the TOC anchor csect, and write out the associated
5054 xcoff_find_tc0 (bfd
*output_bfd
, struct xcoff_final_link_info
*flinfo
)
5056 bfd_vma toc_start
, toc_end
, start
, end
, best_address
;
5060 struct internal_syment irsym
;
5061 union internal_auxent iraux
;
5065 /* Set [TOC_START, TOC_END) to the range of the TOC. Record the
5066 index of a csect at the beginning of the TOC. */
5067 toc_start
= ~(bfd_vma
) 0;
5070 for (input_bfd
= flinfo
->info
->input_bfds
;
5072 input_bfd
= input_bfd
->link
.next
)
5073 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5074 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5076 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5077 if (toc_start
> start
)
5080 section_index
= sec
->output_section
->target_index
;
5083 end
= start
+ sec
->size
;
5088 /* There's no need for a TC0 symbol if we don't have a TOC. */
5089 if (toc_end
< toc_start
)
5091 xcoff_data (output_bfd
)->toc
= toc_start
;
5095 if (toc_end
- toc_start
< 0x8000)
5096 /* Every TOC csect can be accessed from TOC_START. */
5097 best_address
= toc_start
;
5100 /* Find the lowest TOC csect that is still within range of TOC_END. */
5101 best_address
= toc_end
;
5102 for (input_bfd
= flinfo
->info
->input_bfds
;
5104 input_bfd
= input_bfd
->link
.next
)
5105 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5106 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5108 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5109 if (start
< best_address
5110 && start
+ 0x8000 >= toc_end
)
5112 best_address
= start
;
5113 section_index
= sec
->output_section
->target_index
;
5117 /* Make sure that the start of the TOC is also within range. */
5118 if (best_address
> toc_start
+ 0x8000)
5121 (_("TOC overflow: %#" PRIx64
" > 0x10000; try -mminimal-toc "
5123 (uint64_t) (toc_end
- toc_start
));
5124 bfd_set_error (bfd_error_file_too_big
);
5129 /* Record the chosen TOC value. */
5130 flinfo
->toc_symindx
= obj_raw_syment_count (output_bfd
);
5131 xcoff_data (output_bfd
)->toc
= best_address
;
5132 xcoff_data (output_bfd
)->sntoc
= section_index
;
5134 /* Fill out the TC0 symbol. */
5135 if (!bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
, flinfo
->strtab
,
5138 irsym
.n_value
= best_address
;
5139 irsym
.n_scnum
= section_index
;
5140 irsym
.n_sclass
= C_HIDEXT
;
5141 irsym
.n_type
= T_NULL
;
5143 bfd_coff_swap_sym_out (output_bfd
, &irsym
, flinfo
->outsyms
);
5145 /* Fill out the auxillary csect information. */
5146 memset (&iraux
, 0, sizeof iraux
);
5147 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5148 iraux
.x_csect
.x_smclas
= XMC_TC0
;
5149 iraux
.x_csect
.x_scnlen
.l
= 0;
5150 bfd_coff_swap_aux_out (output_bfd
, &iraux
, T_NULL
, C_HIDEXT
, 0, 1,
5151 flinfo
->outsyms
+ bfd_coff_symesz (output_bfd
));
5153 /* Write the contents to the file. */
5154 pos
= obj_sym_filepos (output_bfd
);
5155 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5156 size
= 2 * bfd_coff_symesz (output_bfd
);
5157 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5158 || bfd_bwrite (flinfo
->outsyms
, size
, output_bfd
) != size
)
5160 obj_raw_syment_count (output_bfd
) += 2;
5165 /* Write out a non-XCOFF global symbol. */
5168 xcoff_write_global_symbol (struct bfd_hash_entry
*bh
, void * inf
)
5170 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) bh
;
5171 struct xcoff_final_link_info
*flinfo
= (struct xcoff_final_link_info
*) inf
;
5174 struct internal_syment isym
;
5175 union internal_auxent aux
;
5180 output_bfd
= flinfo
->output_bfd
;
5181 outsym
= flinfo
->outsyms
;
5183 if (h
->root
.type
== bfd_link_hash_warning
)
5185 h
= (struct xcoff_link_hash_entry
*) h
->root
.u
.i
.link
;
5186 if (h
->root
.type
== bfd_link_hash_new
)
5190 /* If this symbol was garbage collected, just skip it. */
5191 if (xcoff_hash_table (flinfo
->info
)->gc
5192 && (h
->flags
& XCOFF_MARK
) == 0)
5195 /* If we need a .loader section entry, write it out. */
5196 if (h
->ldsym
!= NULL
)
5198 struct internal_ldsym
*ldsym
;
5203 if (h
->root
.type
== bfd_link_hash_undefined
5204 || h
->root
.type
== bfd_link_hash_undefweak
)
5208 ldsym
->l_scnum
= N_UNDEF
;
5209 ldsym
->l_smtype
= XTY_ER
;
5210 impbfd
= h
->root
.u
.undef
.abfd
;
5213 else if (h
->root
.type
== bfd_link_hash_defined
5214 || h
->root
.type
== bfd_link_hash_defweak
)
5218 sec
= h
->root
.u
.def
.section
;
5219 ldsym
->l_value
= (sec
->output_section
->vma
5220 + sec
->output_offset
5221 + h
->root
.u
.def
.value
);
5222 ldsym
->l_scnum
= sec
->output_section
->target_index
;
5223 ldsym
->l_smtype
= XTY_SD
;
5224 impbfd
= sec
->owner
;
5230 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
5231 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5232 || (h
->flags
& XCOFF_IMPORT
) != 0)
5234 Import symbols are defined so the check above will make
5235 the l_smtype XTY_SD. But this is not correct, it should
5237 ldsym
->l_smtype
|= L_IMPORT
;
5239 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
5240 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5241 || (h
->flags
& XCOFF_EXPORT
) != 0)
5242 ldsym
->l_smtype
|= L_EXPORT
;
5244 if ((h
->flags
& XCOFF_ENTRY
) != 0)
5245 ldsym
->l_smtype
|= L_ENTRY
;
5247 if ((h
->flags
& XCOFF_RTINIT
) != 0)
5248 ldsym
->l_smtype
= XTY_SD
;
5250 ldsym
->l_smclas
= h
->smclas
;
5252 if (ldsym
->l_smtype
& L_IMPORT
)
5254 if ((h
->root
.type
== bfd_link_hash_defined
5255 || h
->root
.type
== bfd_link_hash_defweak
)
5256 && (h
->root
.u
.def
.value
!= 0))
5257 ldsym
->l_smclas
= XMC_XO
;
5259 else if ((h
->flags
& (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
)) ==
5260 (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
))
5261 ldsym
->l_smclas
= XMC_SV3264
;
5263 else if (h
->flags
& XCOFF_SYSCALL32
)
5264 ldsym
->l_smclas
= XMC_SV
;
5266 else if (h
->flags
& XCOFF_SYSCALL64
)
5267 ldsym
->l_smclas
= XMC_SV64
;
5270 if (ldsym
->l_ifile
== -(bfd_size_type
) 1)
5274 else if (ldsym
->l_ifile
== 0)
5276 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
5278 else if (impbfd
== NULL
)
5282 BFD_ASSERT (impbfd
->xvec
== output_bfd
->xvec
);
5283 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
5289 BFD_ASSERT (h
->ldindx
>= 0);
5291 bfd_xcoff_swap_ldsym_out (output_bfd
, ldsym
,
5294 * bfd_xcoff_ldsymsz(flinfo
->output_bfd
)));
5298 /* If this symbol needs global linkage code, write it out. */
5299 if (h
->root
.type
== bfd_link_hash_defined
5300 && (h
->root
.u
.def
.section
5301 == xcoff_hash_table (flinfo
->info
)->linkage_section
))
5307 p
= h
->root
.u
.def
.section
->contents
+ h
->root
.u
.def
.value
;
5309 /* The first instruction in the global linkage code loads a
5310 specific TOC element. */
5311 tocoff
= (h
->descriptor
->toc_section
->output_section
->vma
5312 + h
->descriptor
->toc_section
->output_offset
5313 - xcoff_data (output_bfd
)->toc
);
5315 if ((h
->descriptor
->flags
& XCOFF_SET_TOC
) != 0)
5316 tocoff
+= h
->descriptor
->u
.toc_offset
;
5318 /* The first instruction in the glink code needs to be
5319 cooked to hold the correct offset in the toc. The
5320 rest are just output raw. */
5321 bfd_put_32 (output_bfd
,
5322 bfd_xcoff_glink_code(output_bfd
, 0) | (tocoff
& 0xffff), p
);
5324 /* Start with i == 1 to get past the first instruction done above
5325 The /4 is because the glink code is in bytes and we are going
5327 for (i
= 1; i
< bfd_xcoff_glink_code_size(output_bfd
) / 4; i
++)
5328 bfd_put_32 (output_bfd
,
5329 (bfd_vma
) bfd_xcoff_glink_code(output_bfd
, i
),
5333 /* If we created a TOC entry for this symbol, write out the required
5335 if ((h
->flags
& XCOFF_SET_TOC
) != 0)
5340 struct internal_reloc
*irel
;
5341 struct internal_syment irsym
;
5342 union internal_auxent iraux
;
5344 tocsec
= h
->toc_section
;
5345 osec
= tocsec
->output_section
;
5346 oindx
= osec
->target_index
;
5347 irel
= flinfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5348 irel
->r_vaddr
= (osec
->vma
5349 + tocsec
->output_offset
5353 irel
->r_symndx
= h
->indx
;
5357 irel
->r_symndx
= obj_raw_syment_count (output_bfd
);
5360 BFD_ASSERT (h
->ldindx
>= 0);
5362 /* Initialize the aux union here instead of closer to when it is
5363 written out below because the length of the csect depends on
5364 whether the output is 32 or 64 bit. */
5365 memset (&iraux
, 0, sizeof iraux
);
5366 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5367 /* iraux.x_csect.x_scnlen.l = 4 or 8, see below. */
5368 iraux
.x_csect
.x_smclas
= XMC_TC
;
5370 /* 32 bit uses a 32 bit R_POS to do the relocations
5371 64 bit uses a 64 bit R_POS to do the relocations
5373 Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit
5375 Which one is determined by the backend. */
5376 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5379 iraux
.x_csect
.x_scnlen
.l
= 8;
5381 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5384 iraux
.x_csect
.x_scnlen
.l
= 4;
5389 irel
->r_type
= R_POS
;
5390 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5391 ++osec
->reloc_count
;
5393 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5394 output_bfd
, irel
, NULL
, h
))
5397 /* We need to emit a symbol to define a csect which holds
5399 if (flinfo
->info
->strip
!= strip_all
)
5401 result
= bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
,
5403 &irsym
, h
->root
.root
.string
);
5407 irsym
.n_value
= irel
->r_vaddr
;
5408 irsym
.n_scnum
= osec
->target_index
;
5409 irsym
.n_sclass
= C_HIDEXT
;
5410 irsym
.n_type
= T_NULL
;
5413 bfd_coff_swap_sym_out (output_bfd
, (void *) &irsym
, (void *) outsym
);
5414 outsym
+= bfd_coff_symesz (output_bfd
);
5416 /* Note : iraux is initialized above. */
5417 bfd_coff_swap_aux_out (output_bfd
, (void *) &iraux
, T_NULL
, C_HIDEXT
,
5418 0, 1, (void *) outsym
);
5419 outsym
+= bfd_coff_auxesz (output_bfd
);
5423 /* We aren't going to write out the symbols below, so we
5424 need to write them out now. */
5425 pos
= obj_sym_filepos (output_bfd
);
5426 pos
+= (obj_raw_syment_count (output_bfd
)
5427 * bfd_coff_symesz (output_bfd
));
5428 amt
= outsym
- flinfo
->outsyms
;
5429 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5430 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
5432 obj_raw_syment_count (output_bfd
) +=
5433 (outsym
- flinfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5435 outsym
= flinfo
->outsyms
;
5440 /* If this symbol is a specially defined function descriptor, write
5441 it out. The first word is the address of the function code
5442 itself, the second word is the address of the TOC, and the third
5446 The addresses for the 32 bit will take 4 bytes and the addresses
5447 for 64 bit will take 8 bytes. Similar for the relocs. This type
5448 of logic was also done above to create a TOC entry in
5449 xcoff_write_global_symbol. */
5450 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
5451 && h
->root
.type
== bfd_link_hash_defined
5452 && (h
->root
.u
.def
.section
5453 == xcoff_hash_table (flinfo
->info
)->descriptor_section
))
5459 struct xcoff_link_hash_entry
*hentry
;
5461 struct internal_reloc
*irel
;
5463 unsigned int reloc_size
, byte_size
;
5465 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5470 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5478 sec
= h
->root
.u
.def
.section
;
5479 osec
= sec
->output_section
;
5480 oindx
= osec
->target_index
;
5481 p
= sec
->contents
+ h
->root
.u
.def
.value
;
5483 hentry
= h
->descriptor
;
5484 BFD_ASSERT (hentry
!= NULL
5485 && (hentry
->root
.type
== bfd_link_hash_defined
5486 || hentry
->root
.type
== bfd_link_hash_defweak
));
5487 esec
= hentry
->root
.u
.def
.section
;
5489 irel
= flinfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5490 irel
->r_vaddr
= (osec
->vma
5491 + sec
->output_offset
5492 + h
->root
.u
.def
.value
);
5493 irel
->r_symndx
= esec
->output_section
->target_index
;
5494 irel
->r_type
= R_POS
;
5495 irel
->r_size
= reloc_size
;
5496 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5497 ++osec
->reloc_count
;
5499 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5500 output_bfd
, irel
, esec
, NULL
))
5503 /* There are three items to write out,
5504 the address of the code
5505 the address of the toc anchor
5506 the environment pointer.
5507 We are ignoring the environment pointer. So set it to zero. */
5508 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5510 bfd_put_64 (output_bfd
,
5511 (esec
->output_section
->vma
+ esec
->output_offset
5512 + hentry
->root
.u
.def
.value
),
5514 bfd_put_64 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 8);
5515 bfd_put_64 (output_bfd
, (bfd_vma
) 0, p
+ 16);
5520 This logic was already called above so the error case where
5521 the backend is neither has already been checked. */
5522 bfd_put_32 (output_bfd
,
5523 (esec
->output_section
->vma
+ esec
->output_offset
5524 + hentry
->root
.u
.def
.value
),
5526 bfd_put_32 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 4);
5527 bfd_put_32 (output_bfd
, (bfd_vma
) 0, p
+ 8);
5530 tsec
= coff_section_from_bfd_index (output_bfd
,
5531 xcoff_data (output_bfd
)->sntoc
);
5534 irel
->r_vaddr
= (osec
->vma
5535 + sec
->output_offset
5536 + h
->root
.u
.def
.value
5538 irel
->r_symndx
= tsec
->output_section
->target_index
;
5539 irel
->r_type
= R_POS
;
5540 irel
->r_size
= reloc_size
;
5541 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5542 ++osec
->reloc_count
;
5544 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5545 output_bfd
, irel
, tsec
, NULL
))
5549 if (h
->indx
>= 0 || flinfo
->info
->strip
== strip_all
)
5551 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5556 && (flinfo
->info
->strip
== strip_all
5557 || (flinfo
->info
->strip
== strip_some
5558 && bfd_hash_lookup (flinfo
->info
->keep_hash
, h
->root
.root
.string
,
5559 FALSE
, FALSE
) == NULL
)))
5561 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5566 && (h
->flags
& (XCOFF_REF_REGULAR
| XCOFF_DEF_REGULAR
)) == 0)
5568 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5572 memset (&aux
, 0, sizeof aux
);
5574 h
->indx
= obj_raw_syment_count (output_bfd
);
5576 result
= bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
, flinfo
->strtab
,
5577 &isym
, h
->root
.root
.string
);
5581 if (h
->root
.type
== bfd_link_hash_undefined
5582 || h
->root
.type
== bfd_link_hash_undefweak
)
5585 isym
.n_scnum
= N_UNDEF
;
5586 if (h
->root
.type
== bfd_link_hash_undefweak
5587 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5588 isym
.n_sclass
= C_WEAKEXT
;
5590 isym
.n_sclass
= C_EXT
;
5591 aux
.x_csect
.x_smtyp
= XTY_ER
;
5593 else if ((h
->root
.type
== bfd_link_hash_defined
5594 || h
->root
.type
== bfd_link_hash_defweak
)
5595 && h
->smclas
== XMC_XO
)
5597 BFD_ASSERT (bfd_is_abs_symbol (&h
->root
));
5598 isym
.n_value
= h
->root
.u
.def
.value
;
5599 isym
.n_scnum
= N_UNDEF
;
5600 if (h
->root
.type
== bfd_link_hash_defweak
5601 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5602 isym
.n_sclass
= C_WEAKEXT
;
5604 isym
.n_sclass
= C_EXT
;
5605 aux
.x_csect
.x_smtyp
= XTY_ER
;
5607 else if (h
->root
.type
== bfd_link_hash_defined
5608 || h
->root
.type
== bfd_link_hash_defweak
)
5610 struct xcoff_link_size_list
*l
;
5612 isym
.n_value
= (h
->root
.u
.def
.section
->output_section
->vma
5613 + h
->root
.u
.def
.section
->output_offset
5614 + h
->root
.u
.def
.value
);
5615 if (bfd_is_abs_section (h
->root
.u
.def
.section
->output_section
))
5616 isym
.n_scnum
= N_ABS
;
5618 isym
.n_scnum
= h
->root
.u
.def
.section
->output_section
->target_index
;
5619 isym
.n_sclass
= C_HIDEXT
;
5620 aux
.x_csect
.x_smtyp
= XTY_SD
;
5622 if ((h
->flags
& XCOFF_HAS_SIZE
) != 0)
5624 for (l
= xcoff_hash_table (flinfo
->info
)->size_list
;
5630 aux
.x_csect
.x_scnlen
.l
= l
->size
;
5636 else if (h
->root
.type
== bfd_link_hash_common
)
5638 isym
.n_value
= (h
->root
.u
.c
.p
->section
->output_section
->vma
5639 + h
->root
.u
.c
.p
->section
->output_offset
);
5640 isym
.n_scnum
= h
->root
.u
.c
.p
->section
->output_section
->target_index
;
5641 isym
.n_sclass
= C_EXT
;
5642 aux
.x_csect
.x_smtyp
= XTY_CM
;
5643 aux
.x_csect
.x_scnlen
.l
= h
->root
.u
.c
.size
;
5648 isym
.n_type
= T_NULL
;
5651 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5652 outsym
+= bfd_coff_symesz (output_bfd
);
5654 aux
.x_csect
.x_smclas
= h
->smclas
;
5655 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, isym
.n_sclass
, 0, 1,
5657 outsym
+= bfd_coff_auxesz (output_bfd
);
5659 if ((h
->root
.type
== bfd_link_hash_defined
5660 || h
->root
.type
== bfd_link_hash_defweak
)
5661 && h
->smclas
!= XMC_XO
)
5663 /* We just output an SD symbol. Now output an LD symbol. */
5666 if (h
->root
.type
== bfd_link_hash_defweak
5667 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5668 isym
.n_sclass
= C_WEAKEXT
;
5670 isym
.n_sclass
= C_EXT
;
5671 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5672 outsym
+= bfd_coff_symesz (output_bfd
);
5674 aux
.x_csect
.x_smtyp
= XTY_LD
;
5675 aux
.x_csect
.x_scnlen
.l
= obj_raw_syment_count (output_bfd
);
5676 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, C_EXT
, 0, 1,
5678 outsym
+= bfd_coff_auxesz (output_bfd
);
5681 pos
= obj_sym_filepos (output_bfd
);
5682 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5683 amt
= outsym
- flinfo
->outsyms
;
5684 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5685 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
5687 obj_raw_syment_count (output_bfd
) +=
5688 (outsym
- flinfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5693 /* Handle a link order which is supposed to generate a reloc. */
5696 xcoff_reloc_link_order (bfd
*output_bfd
,
5697 struct xcoff_final_link_info
*flinfo
,
5698 asection
*output_section
,
5699 struct bfd_link_order
*link_order
)
5701 reloc_howto_type
*howto
;
5702 struct xcoff_link_hash_entry
*h
;
5706 struct internal_reloc
*irel
;
5707 struct xcoff_link_hash_entry
**rel_hash_ptr
;
5709 if (link_order
->type
== bfd_section_reloc_link_order
)
5710 /* We need to somehow locate a symbol in the right section. The
5711 symbol must either have a value of zero, or we must adjust
5712 the addend by the value of the symbol. FIXME: Write this
5713 when we need it. The old linker couldn't handle this anyhow. */
5716 howto
= bfd_reloc_type_lookup (output_bfd
, link_order
->u
.reloc
.p
->reloc
);
5719 bfd_set_error (bfd_error_bad_value
);
5723 h
= ((struct xcoff_link_hash_entry
*)
5724 bfd_wrapped_link_hash_lookup (output_bfd
, flinfo
->info
,
5725 link_order
->u
.reloc
.p
->u
.name
,
5726 FALSE
, FALSE
, TRUE
));
5729 (*flinfo
->info
->callbacks
->unattached_reloc
)
5730 (flinfo
->info
, link_order
->u
.reloc
.p
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
5734 hsec
= xcoff_symbol_section (h
);
5735 if (h
->root
.type
== bfd_link_hash_defined
5736 || h
->root
.type
== bfd_link_hash_defweak
)
5737 hval
= h
->root
.u
.def
.value
;
5741 addend
= link_order
->u
.reloc
.p
->addend
;
5743 addend
+= (hsec
->output_section
->vma
5744 + hsec
->output_offset
5751 bfd_reloc_status_type rstat
;
5754 size
= bfd_get_reloc_size (howto
);
5755 buf
= bfd_zmalloc (size
);
5756 if (buf
== NULL
&& size
!= 0)
5759 rstat
= _bfd_relocate_contents (howto
, output_bfd
, addend
, buf
);
5765 case bfd_reloc_outofrange
:
5767 case bfd_reloc_overflow
:
5768 (*flinfo
->info
->callbacks
->reloc_overflow
)
5769 (flinfo
->info
, NULL
, link_order
->u
.reloc
.p
->u
.name
,
5770 howto
->name
, addend
, NULL
, NULL
, (bfd_vma
) 0);
5773 ok
= bfd_set_section_contents (output_bfd
, output_section
, (void *) buf
,
5774 (file_ptr
) link_order
->offset
, size
);
5780 /* Store the reloc information in the right place. It will get
5781 swapped and written out at the end of the final_link routine. */
5782 irel
= (flinfo
->section_info
[output_section
->target_index
].relocs
5783 + output_section
->reloc_count
);
5784 rel_hash_ptr
= (flinfo
->section_info
[output_section
->target_index
].rel_hashes
5785 + output_section
->reloc_count
);
5787 memset (irel
, 0, sizeof (struct internal_reloc
));
5788 *rel_hash_ptr
= NULL
;
5790 irel
->r_vaddr
= output_section
->vma
+ link_order
->offset
;
5793 irel
->r_symndx
= h
->indx
;
5796 /* Set the index to -2 to force this symbol to get written out. */
5802 irel
->r_type
= howto
->type
;
5803 irel
->r_size
= howto
->bitsize
- 1;
5804 if (howto
->complain_on_overflow
== complain_overflow_signed
)
5805 irel
->r_size
|= 0x80;
5807 ++output_section
->reloc_count
;
5809 /* Now output the reloc to the .loader section. */
5810 if (xcoff_hash_table (flinfo
->info
)->loader_section
)
5812 if (!xcoff_create_ldrel (output_bfd
, flinfo
, output_section
,
5813 output_bfd
, irel
, hsec
, h
))
5820 /* Do the final link step. */
5823 _bfd_xcoff_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5825 bfd_size_type symesz
;
5826 struct xcoff_final_link_info flinfo
;
5828 struct bfd_link_order
*p
;
5829 bfd_size_type max_contents_size
;
5830 bfd_size_type max_sym_count
;
5831 bfd_size_type max_lineno_count
;
5832 bfd_size_type max_reloc_count
;
5833 bfd_size_type max_output_reloc_count
;
5834 file_ptr rel_filepos
;
5836 file_ptr line_filepos
;
5837 unsigned int linesz
;
5839 bfd_byte
*external_relocs
= NULL
;
5840 char strbuf
[STRING_SIZE_SIZE
];
5844 if (bfd_link_pic (info
))
5845 abfd
->flags
|= DYNAMIC
;
5847 symesz
= bfd_coff_symesz (abfd
);
5850 flinfo
.output_bfd
= abfd
;
5851 flinfo
.strtab
= NULL
;
5852 flinfo
.section_info
= NULL
;
5853 flinfo
.last_file_index
= -1;
5854 flinfo
.toc_symindx
= -1;
5855 flinfo
.internal_syms
= NULL
;
5856 flinfo
.sym_indices
= NULL
;
5857 flinfo
.outsyms
= NULL
;
5858 flinfo
.linenos
= NULL
;
5859 flinfo
.contents
= NULL
;
5860 flinfo
.external_relocs
= NULL
;
5862 if (xcoff_hash_table (info
)->loader_section
)
5864 flinfo
.ldsym
= (xcoff_hash_table (info
)->loader_section
->contents
5865 + bfd_xcoff_ldhdrsz (abfd
));
5866 flinfo
.ldrel
= (xcoff_hash_table (info
)->loader_section
->contents
5867 + bfd_xcoff_ldhdrsz (abfd
)
5868 + (xcoff_hash_table (info
)->ldhdr
.l_nsyms
5869 * bfd_xcoff_ldsymsz (abfd
)));
5873 flinfo
.ldsym
= NULL
;
5874 flinfo
.ldrel
= NULL
;
5877 xcoff_data (abfd
)->coff
.link_info
= info
;
5879 flinfo
.strtab
= _bfd_stringtab_init ();
5880 if (flinfo
.strtab
== NULL
)
5883 /* Count the relocation entries required for the output file.
5884 (We've already counted the line numbers.) Determine a few
5886 max_contents_size
= 0;
5887 max_lineno_count
= 0;
5888 max_reloc_count
= 0;
5889 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5892 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5894 if (p
->type
== bfd_indirect_link_order
)
5898 sec
= p
->u
.indirect
.section
;
5900 /* Mark all sections which are to be included in the
5901 link. This will normally be every section. We need
5902 to do this so that we can identify any sections which
5903 the linker has decided to not include. */
5904 sec
->linker_mark
= TRUE
;
5906 o
->reloc_count
+= sec
->reloc_count
;
5908 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
5910 if (sec
->rawsize
> max_contents_size
)
5911 max_contents_size
= sec
->rawsize
;
5912 if (sec
->size
> max_contents_size
)
5913 max_contents_size
= sec
->size
;
5915 if (coff_section_data (sec
->owner
, sec
) != NULL
5916 && xcoff_section_data (sec
->owner
, sec
) != NULL
5917 && (xcoff_section_data (sec
->owner
, sec
)->lineno_count
5918 > max_lineno_count
))
5920 xcoff_section_data (sec
->owner
, sec
)->lineno_count
;
5921 if (sec
->reloc_count
> max_reloc_count
)
5922 max_reloc_count
= sec
->reloc_count
;
5924 else if (p
->type
== bfd_section_reloc_link_order
5925 || p
->type
== bfd_symbol_reloc_link_order
)
5930 /* Compute the file positions for all the sections. */
5931 if (abfd
->output_has_begun
)
5933 if (xcoff_hash_table (info
)->file_align
!= 0)
5940 file_align
= xcoff_hash_table (info
)->file_align
;
5941 if (file_align
!= 0)
5943 bfd_boolean saw_contents
;
5947 /* Insert .pad sections before every section which has
5948 contents and is loaded, if it is preceded by some other
5949 section which has contents and is loaded. */
5950 saw_contents
= TRUE
;
5951 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5953 if (strcmp (o
->name
, ".pad") == 0)
5954 saw_contents
= FALSE
;
5955 else if ((o
->flags
& SEC_HAS_CONTENTS
) != 0
5956 && (o
->flags
& SEC_LOAD
) != 0)
5959 saw_contents
= TRUE
;
5964 /* Create a pad section and place it before the section
5965 that needs padding. This requires unlinking and
5966 relinking the bfd's section list. */
5968 n
= bfd_make_section_anyway_with_flags (abfd
, ".pad",
5970 n
->alignment_power
= 0;
5972 bfd_section_list_remove (abfd
, n
);
5973 bfd_section_list_insert_before (abfd
, o
, n
);
5974 saw_contents
= FALSE
;
5979 /* Reset the section indices after inserting the new
5982 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5985 o
->target_index
= indx
;
5987 BFD_ASSERT ((unsigned int) indx
== abfd
->section_count
);
5989 /* Work out appropriate sizes for the .pad sections to force
5990 each section to land on a page boundary. This bit of
5991 code knows what compute_section_file_positions is going
5993 sofar
= bfd_coff_filhsz (abfd
);
5994 sofar
+= bfd_coff_aoutsz (abfd
);
5995 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
5996 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5997 if ((bfd_xcoff_is_reloc_count_overflow
5998 (abfd
, (bfd_vma
) o
->reloc_count
))
5999 || (bfd_xcoff_is_lineno_count_overflow
6000 (abfd
, (bfd_vma
) o
->lineno_count
)))
6001 /* 64 does not overflow, need to check if 32 does */
6002 sofar
+= bfd_coff_scnhsz (abfd
);
6004 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6006 if (strcmp (o
->name
, ".pad") == 0)
6010 BFD_ASSERT (o
->size
== 0);
6011 pageoff
= sofar
& (file_align
- 1);
6014 o
->size
= file_align
- pageoff
;
6015 sofar
+= file_align
- pageoff
;
6016 o
->flags
|= SEC_HAS_CONTENTS
;
6021 if ((o
->flags
& SEC_HAS_CONTENTS
) != 0)
6022 sofar
+= BFD_ALIGN (o
->size
,
6023 1 << o
->alignment_power
);
6028 if (! bfd_coff_compute_section_file_positions (abfd
))
6032 /* Allocate space for the pointers we need to keep for the relocs. */
6036 /* We use section_count + 1, rather than section_count, because
6037 the target_index fields are 1 based. */
6038 amt
= abfd
->section_count
+ 1;
6039 amt
*= sizeof (struct xcoff_link_section_info
);
6040 flinfo
.section_info
= bfd_malloc (amt
);
6041 if (flinfo
.section_info
== NULL
)
6043 for (i
= 0; i
<= abfd
->section_count
; i
++)
6045 flinfo
.section_info
[i
].relocs
= NULL
;
6046 flinfo
.section_info
[i
].rel_hashes
= NULL
;
6047 flinfo
.section_info
[i
].toc_rel_hashes
= NULL
;
6051 /* Set the file positions for the relocs. */
6052 rel_filepos
= obj_relocbase (abfd
);
6053 relsz
= bfd_coff_relsz (abfd
);
6054 max_output_reloc_count
= 0;
6055 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6057 if (o
->reloc_count
== 0)
6061 /* A stripped file has no relocs. However, we still
6062 allocate the buffers, so that later code doesn't have to
6063 worry about whether we are stripping or not. */
6064 if (info
->strip
== strip_all
)
6068 o
->flags
|= SEC_RELOC
;
6069 o
->rel_filepos
= rel_filepos
;
6070 rel_filepos
+= o
->reloc_count
* relsz
;
6073 /* We don't know the indices of global symbols until we have
6074 written out all the local symbols. For each section in
6075 the output file, we keep an array of pointers to hash
6076 table entries. Each entry in the array corresponds to a
6077 reloc. When we find a reloc against a global symbol, we
6078 set the corresponding entry in this array so that we can
6079 fix up the symbol index after we have written out all the
6082 Because of this problem, we also keep the relocs in
6083 memory until the end of the link. This wastes memory.
6084 We could backpatch the file later, I suppose, although it
6086 amt
= o
->reloc_count
;
6087 amt
*= sizeof (struct internal_reloc
);
6088 flinfo
.section_info
[o
->target_index
].relocs
= bfd_malloc (amt
);
6090 amt
= o
->reloc_count
;
6091 amt
*= sizeof (struct xcoff_link_hash_entry
*);
6092 flinfo
.section_info
[o
->target_index
].rel_hashes
= bfd_malloc (amt
);
6094 if (flinfo
.section_info
[o
->target_index
].relocs
== NULL
6095 || flinfo
.section_info
[o
->target_index
].rel_hashes
== NULL
)
6098 if (o
->reloc_count
> max_output_reloc_count
)
6099 max_output_reloc_count
= o
->reloc_count
;
6103 /* We now know the size of the relocs, so we can determine the file
6104 positions of the line numbers. */
6105 line_filepos
= rel_filepos
;
6106 flinfo
.line_filepos
= line_filepos
;
6107 linesz
= bfd_coff_linesz (abfd
);
6108 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6110 if (o
->lineno_count
== 0)
6111 o
->line_filepos
= 0;
6114 o
->line_filepos
= line_filepos
;
6115 line_filepos
+= o
->lineno_count
* linesz
;
6118 /* Reset the reloc and lineno counts, so that we can use them to
6119 count the number of entries we have output so far. */
6121 o
->lineno_count
= 0;
6124 obj_sym_filepos (abfd
) = line_filepos
;
6126 /* Figure out the largest number of symbols in an input BFD. Take
6127 the opportunity to clear the output_has_begun fields of all the
6128 input BFD's. We want at least 6 symbols, since that is the
6129 number which xcoff_write_global_symbol may need. */
6131 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
6135 sub
->output_has_begun
= FALSE
;
6136 sz
= obj_raw_syment_count (sub
);
6137 if (sz
> max_sym_count
)
6141 /* Allocate some buffers used while linking. */
6142 amt
= max_sym_count
* sizeof (struct internal_syment
);
6143 flinfo
.internal_syms
= bfd_malloc (amt
);
6145 amt
= max_sym_count
* sizeof (long);
6146 flinfo
.sym_indices
= bfd_malloc (amt
);
6148 amt
= (max_sym_count
+ 1) * symesz
;
6149 flinfo
.outsyms
= bfd_malloc (amt
);
6151 amt
= max_lineno_count
* bfd_coff_linesz (abfd
);
6152 flinfo
.linenos
= bfd_malloc (amt
);
6154 amt
= max_contents_size
;
6155 flinfo
.contents
= bfd_malloc (amt
);
6157 amt
= max_reloc_count
* relsz
;
6158 flinfo
.external_relocs
= bfd_malloc (amt
);
6160 if ((flinfo
.internal_syms
== NULL
&& max_sym_count
> 0)
6161 || (flinfo
.sym_indices
== NULL
&& max_sym_count
> 0)
6162 || flinfo
.outsyms
== NULL
6163 || (flinfo
.linenos
== NULL
&& max_lineno_count
> 0)
6164 || (flinfo
.contents
== NULL
&& max_contents_size
> 0)
6165 || (flinfo
.external_relocs
== NULL
&& max_reloc_count
> 0))
6168 obj_raw_syment_count (abfd
) = 0;
6170 /* Find a TOC symbol, if we need one. */
6171 if (!xcoff_find_tc0 (abfd
, &flinfo
))
6174 /* We now know the position of everything in the file, except that
6175 we don't know the size of the symbol table and therefore we don't
6176 know where the string table starts. We just build the string
6177 table in memory as we go along. We process all the relocations
6178 for a single input file at once. */
6179 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6181 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
6183 if (p
->type
== bfd_indirect_link_order
6184 && p
->u
.indirect
.section
->owner
->xvec
== abfd
->xvec
)
6186 sub
= p
->u
.indirect
.section
->owner
;
6187 if (! sub
->output_has_begun
)
6189 if (! xcoff_link_input_bfd (&flinfo
, sub
))
6191 sub
->output_has_begun
= TRUE
;
6194 else if (p
->type
== bfd_section_reloc_link_order
6195 || p
->type
== bfd_symbol_reloc_link_order
)
6197 if (! xcoff_reloc_link_order (abfd
, &flinfo
, o
, p
))
6202 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
6208 /* Free up the buffers used by xcoff_link_input_bfd. */
6209 if (flinfo
.internal_syms
!= NULL
)
6211 free (flinfo
.internal_syms
);
6212 flinfo
.internal_syms
= NULL
;
6214 if (flinfo
.sym_indices
!= NULL
)
6216 free (flinfo
.sym_indices
);
6217 flinfo
.sym_indices
= NULL
;
6219 if (flinfo
.linenos
!= NULL
)
6221 free (flinfo
.linenos
);
6222 flinfo
.linenos
= NULL
;
6224 if (flinfo
.contents
!= NULL
)
6226 free (flinfo
.contents
);
6227 flinfo
.contents
= NULL
;
6229 if (flinfo
.external_relocs
!= NULL
)
6231 free (flinfo
.external_relocs
);
6232 flinfo
.external_relocs
= NULL
;
6235 /* The value of the last C_FILE symbol is supposed to be -1. Write
6237 if (flinfo
.last_file_index
!= -1)
6239 flinfo
.last_file
.n_value
= -(bfd_vma
) 1;
6240 bfd_coff_swap_sym_out (abfd
, (void *) &flinfo
.last_file
,
6241 (void *) flinfo
.outsyms
);
6242 pos
= obj_sym_filepos (abfd
) + flinfo
.last_file_index
* symesz
;
6243 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
6244 || bfd_bwrite (flinfo
.outsyms
, symesz
, abfd
) != symesz
)
6248 /* Write out all the global symbols which do not come from XCOFF
6250 bfd_hash_traverse (&info
->hash
->table
, xcoff_write_global_symbol
, &flinfo
);
6252 if (flinfo
.outsyms
!= NULL
)
6254 free (flinfo
.outsyms
);
6255 flinfo
.outsyms
= NULL
;
6258 /* Now that we have written out all the global symbols, we know the
6259 symbol indices to use for relocs against them, and we can finally
6260 write out the relocs. */
6261 amt
= max_output_reloc_count
* relsz
;
6262 external_relocs
= bfd_malloc (amt
);
6263 if (external_relocs
== NULL
&& max_output_reloc_count
!= 0)
6266 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6268 struct internal_reloc
*irel
;
6269 struct internal_reloc
*irelend
;
6270 struct xcoff_link_hash_entry
**rel_hash
;
6271 struct xcoff_toc_rel_hash
*toc_rel_hash
;
6273 bfd_size_type rel_size
;
6275 /* A stripped file has no relocs. */
6276 if (info
->strip
== strip_all
)
6282 if (o
->reloc_count
== 0)
6285 irel
= flinfo
.section_info
[o
->target_index
].relocs
;
6286 irelend
= irel
+ o
->reloc_count
;
6287 rel_hash
= flinfo
.section_info
[o
->target_index
].rel_hashes
;
6288 for (; irel
< irelend
; irel
++, rel_hash
++)
6290 if (*rel_hash
!= NULL
)
6292 if ((*rel_hash
)->indx
< 0)
6294 (*info
->callbacks
->unattached_reloc
)
6295 (info
, (*rel_hash
)->root
.root
.string
,
6296 NULL
, o
, irel
->r_vaddr
);
6297 (*rel_hash
)->indx
= 0;
6299 irel
->r_symndx
= (*rel_hash
)->indx
;
6303 for (toc_rel_hash
= flinfo
.section_info
[o
->target_index
].toc_rel_hashes
;
6304 toc_rel_hash
!= NULL
;
6305 toc_rel_hash
= toc_rel_hash
->next
)
6307 if (toc_rel_hash
->h
->u
.toc_indx
< 0)
6309 (*info
->callbacks
->unattached_reloc
)
6310 (info
, toc_rel_hash
->h
->root
.root
.string
,
6311 NULL
, o
, toc_rel_hash
->rel
->r_vaddr
);
6312 toc_rel_hash
->h
->u
.toc_indx
= 0;
6314 toc_rel_hash
->rel
->r_symndx
= toc_rel_hash
->h
->u
.toc_indx
;
6317 /* XCOFF requires that the relocs be sorted by address. We tend
6318 to produce them in the order in which their containing csects
6319 appear in the symbol table, which is not necessarily by
6320 address. So we sort them here. There may be a better way to
6322 qsort ((void *) flinfo
.section_info
[o
->target_index
].relocs
,
6323 o
->reloc_count
, sizeof (struct internal_reloc
),
6326 irel
= flinfo
.section_info
[o
->target_index
].relocs
;
6327 irelend
= irel
+ o
->reloc_count
;
6328 erel
= external_relocs
;
6329 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
6330 bfd_coff_swap_reloc_out (abfd
, (void *) irel
, (void *) erel
);
6332 rel_size
= relsz
* o
->reloc_count
;
6333 if (bfd_seek (abfd
, o
->rel_filepos
, SEEK_SET
) != 0
6334 || bfd_bwrite ((void *) external_relocs
, rel_size
, abfd
) != rel_size
)
6338 if (external_relocs
!= NULL
)
6340 free (external_relocs
);
6341 external_relocs
= NULL
;
6344 /* Free up the section information. */
6345 if (flinfo
.section_info
!= NULL
)
6349 for (i
= 0; i
< abfd
->section_count
; i
++)
6351 if (flinfo
.section_info
[i
].relocs
!= NULL
)
6352 free (flinfo
.section_info
[i
].relocs
);
6353 if (flinfo
.section_info
[i
].rel_hashes
!= NULL
)
6354 free (flinfo
.section_info
[i
].rel_hashes
);
6356 free (flinfo
.section_info
);
6357 flinfo
.section_info
= NULL
;
6360 /* Write out the loader section contents. */
6361 o
= xcoff_hash_table (info
)->loader_section
;
6364 BFD_ASSERT ((bfd_byte
*) flinfo
.ldrel
6365 == (xcoff_hash_table (info
)->loader_section
->contents
6366 + xcoff_hash_table (info
)->ldhdr
.l_impoff
));
6367 if (!bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6368 (file_ptr
) o
->output_offset
, o
->size
))
6372 /* Write out the magic sections. */
6373 o
= xcoff_hash_table (info
)->linkage_section
;
6375 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6376 (file_ptr
) o
->output_offset
,
6379 o
= xcoff_hash_table (info
)->toc_section
;
6381 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6382 (file_ptr
) o
->output_offset
,
6385 o
= xcoff_hash_table (info
)->descriptor_section
;
6387 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6388 (file_ptr
) o
->output_offset
,
6392 /* Write out the string table. */
6393 pos
= obj_sym_filepos (abfd
) + obj_raw_syment_count (abfd
) * symesz
;
6394 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6397 _bfd_stringtab_size (flinfo
.strtab
) + STRING_SIZE_SIZE
,
6399 amt
= STRING_SIZE_SIZE
;
6400 if (bfd_bwrite (strbuf
, amt
, abfd
) != amt
)
6402 if (! _bfd_stringtab_emit (abfd
, flinfo
.strtab
))
6405 _bfd_stringtab_free (flinfo
.strtab
);
6407 /* Write out the debugging string table. */
6408 o
= xcoff_hash_table (info
)->debug_section
;
6411 struct bfd_strtab_hash
*debug_strtab
;
6413 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
6414 BFD_ASSERT (o
->output_section
->size
- o
->output_offset
6415 >= _bfd_stringtab_size (debug_strtab
));
6416 pos
= o
->output_section
->filepos
+ o
->output_offset
;
6417 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6419 if (! _bfd_stringtab_emit (abfd
, debug_strtab
))
6423 /* Setting symcount to 0 will cause write_object_contents to
6424 not try to write out the symbols. */
6430 if (flinfo
.strtab
!= NULL
)
6431 _bfd_stringtab_free (flinfo
.strtab
);
6433 if (flinfo
.section_info
!= NULL
)
6437 for (i
= 0; i
< abfd
->section_count
; i
++)
6439 if (flinfo
.section_info
[i
].relocs
!= NULL
)
6440 free (flinfo
.section_info
[i
].relocs
);
6441 if (flinfo
.section_info
[i
].rel_hashes
!= NULL
)
6442 free (flinfo
.section_info
[i
].rel_hashes
);
6444 free (flinfo
.section_info
);
6447 if (flinfo
.internal_syms
!= NULL
)
6448 free (flinfo
.internal_syms
);
6449 if (flinfo
.sym_indices
!= NULL
)
6450 free (flinfo
.sym_indices
);
6451 if (flinfo
.outsyms
!= NULL
)
6452 free (flinfo
.outsyms
);
6453 if (flinfo
.linenos
!= NULL
)
6454 free (flinfo
.linenos
);
6455 if (flinfo
.contents
!= NULL
)
6456 free (flinfo
.contents
);
6457 if (flinfo
.external_relocs
!= NULL
)
6458 free (flinfo
.external_relocs
);
6459 if (external_relocs
!= NULL
)
6460 free (external_relocs
);