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 amt
= linesz
* o
->lineno_count
;
1321 linenos
= bfd_malloc (amt
);
1322 if (linenos
== NULL
)
1324 reloc_info
[o
->target_index
].linenos
= linenos
;
1325 if (bfd_seek (abfd
, o
->line_filepos
, SEEK_SET
) != 0
1326 || bfd_bread (linenos
, amt
, abfd
) != amt
)
1331 /* Don't let the linker relocation routines discard the symbols. */
1332 obj_coff_keep_syms (abfd
) = TRUE
;
1338 symesz
= bfd_coff_symesz (abfd
);
1339 BFD_ASSERT (symesz
== bfd_coff_auxesz (abfd
));
1340 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
1341 esym_end
= esym
+ symcount
* symesz
;
1343 while (esym
< esym_end
)
1345 struct internal_syment sym
;
1346 union internal_auxent aux
;
1348 char buf
[SYMNMLEN
+ 1];
1352 struct xcoff_link_hash_entry
*set_toc
;
1354 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
1356 /* In this pass we are only interested in symbols with csect
1358 if (!CSECT_SYM_P (sym
.n_sclass
))
1361 Normally csect is a .pr, .rw etc. created in the loop
1362 If C_FILE or first time, handle special
1364 Advance esym, sym_hash, csect_hash ptrs. */
1365 if (sym
.n_sclass
== C_FILE
|| sym
.n_sclass
== C_DWARF
)
1368 *csect_cache
= csect
;
1369 else if (first_csect
== NULL
1370 || sym
.n_sclass
== C_FILE
|| sym
.n_sclass
== C_DWARF
)
1371 *csect_cache
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1373 *csect_cache
= NULL
;
1374 esym
+= (sym
.n_numaux
+ 1) * symesz
;
1375 sym_hash
+= sym
.n_numaux
+ 1;
1376 csect_cache
+= sym
.n_numaux
+ 1;
1377 lineno_counts
+= sym
.n_numaux
+ 1;
1382 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
1387 /* If this symbol has line number information attached to it,
1388 and we're not stripping it, count the number of entries and
1389 add them to the count for this csect. In the final link pass
1390 we are going to attach line number information by symbol,
1391 rather than by section, in order to more easily handle
1392 garbage collection. */
1393 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1396 && ISFCN (sym
.n_type
))
1398 union internal_auxent auxlin
;
1400 bfd_coff_swap_aux_in (abfd
, (void *) (esym
+ symesz
),
1401 sym
.n_type
, sym
.n_sclass
,
1402 0, sym
.n_numaux
, (void *) &auxlin
);
1404 if (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
1406 asection
*enclosing
;
1407 bfd_signed_vma linoff
;
1409 enclosing
= xcoff_section_data (abfd
, csect
)->enclosing
;
1410 if (enclosing
== NULL
)
1413 /* xgettext:c-format */
1414 (_("%pB: `%s' has line numbers but no enclosing section"),
1416 bfd_set_error (bfd_error_bad_value
);
1419 linoff
= (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
1420 - enclosing
->line_filepos
);
1421 /* Explicit cast to bfd_signed_vma for compiler. */
1422 if (linoff
< (bfd_signed_vma
) (enclosing
->lineno_count
* linesz
))
1424 struct internal_lineno lin
;
1425 bfd_byte
*linpstart
;
1427 linpstart
= (reloc_info
[enclosing
->target_index
].linenos
1429 bfd_coff_swap_lineno_in (abfd
, (void *) linpstart
, (void *) &lin
);
1431 && ((bfd_size_type
) lin
.l_addr
.l_symndx
1433 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1436 bfd_byte
*linpend
, *linp
;
1438 linpend
= (reloc_info
[enclosing
->target_index
].linenos
1439 + enclosing
->lineno_count
* linesz
);
1440 for (linp
= linpstart
+ linesz
;
1444 bfd_coff_swap_lineno_in (abfd
, (void *) linp
,
1446 if (lin
.l_lnno
== 0)
1449 *lineno_counts
= (linp
- linpstart
) / linesz
;
1450 /* The setting of line_filepos will only be
1451 useful if all the line number entries for a
1452 csect are contiguous; this only matters for
1454 if (csect
->line_filepos
== 0)
1455 csect
->line_filepos
=
1456 auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
;
1462 /* Pick up the csect auxiliary information. */
1463 if (sym
.n_numaux
== 0)
1466 /* xgettext:c-format */
1467 (_("%pB: class %d symbol `%s' has no aux entries"),
1468 abfd
, sym
.n_sclass
, name
);
1469 bfd_set_error (bfd_error_bad_value
);
1473 bfd_coff_swap_aux_in (abfd
,
1474 (void *) (esym
+ symesz
* sym
.n_numaux
),
1475 sym
.n_type
, sym
.n_sclass
,
1476 sym
.n_numaux
- 1, sym
.n_numaux
,
1479 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
1489 /* xgettext:c-format */
1490 (_("%pB: symbol `%s' has unrecognized csect type %d"),
1492 bfd_set_error (bfd_error_bad_value
);
1496 /* This is an external reference. */
1497 if (sym
.n_sclass
== C_HIDEXT
1498 || sym
.n_scnum
!= N_UNDEF
1499 || aux
.x_csect
.x_scnlen
.l
!= 0)
1502 /* xgettext:c-format */
1503 (_("%pB: bad XTY_ER symbol `%s': class %d scnum %d "
1505 abfd
, name
, sym
.n_sclass
, sym
.n_scnum
,
1506 (int64_t) aux
.x_csect
.x_scnlen
.l
);
1507 bfd_set_error (bfd_error_bad_value
);
1511 /* An XMC_XO external reference is actually a reference to
1512 an absolute location. */
1513 if (aux
.x_csect
.x_smclas
!= XMC_XO
)
1514 section
= bfd_und_section_ptr
;
1517 section
= bfd_abs_section_ptr
;
1518 value
= sym
.n_value
;
1524 csect_index
= -(unsigned) 1;
1526 /* When we see a TOC anchor, we record the TOC value. */
1527 if (aux
.x_csect
.x_smclas
== XMC_TC0
)
1529 if (sym
.n_sclass
!= C_HIDEXT
1530 || aux
.x_csect
.x_scnlen
.l
!= 0)
1533 /* xgettext:c-format */
1534 (_("%pB: XMC_TC0 symbol `%s' is class %d scnlen %" PRId64
),
1535 abfd
, name
, sym
.n_sclass
, (int64_t) aux
.x_csect
.x_scnlen
.l
);
1536 bfd_set_error (bfd_error_bad_value
);
1539 xcoff_data (abfd
)->toc
= sym
.n_value
;
1542 /* We must merge TOC entries for the same symbol. We can
1543 merge two TOC entries if they are both C_HIDEXT, they
1544 both have the same name, they are both 4 or 8 bytes long, and
1545 they both have a relocation table entry for an external
1546 symbol with the same name. Unfortunately, this means
1547 that we must look through the relocations. Ick.
1549 Logic for 32 bit vs 64 bit.
1550 32 bit has a csect length of 4 for TOC
1551 64 bit has a csect length of 8 for TOC
1553 The conditions to get past the if-check are not that bad.
1554 They are what is used to create the TOC csects in the first
1556 if (aux
.x_csect
.x_smclas
== XMC_TC
1557 && sym
.n_sclass
== C_HIDEXT
1558 && info
->output_bfd
->xvec
== abfd
->xvec
1559 && ((bfd_xcoff_is_xcoff32 (abfd
)
1560 && aux
.x_csect
.x_scnlen
.l
== 4)
1561 || (bfd_xcoff_is_xcoff64 (abfd
)
1562 && aux
.x_csect
.x_scnlen
.l
== 8)))
1564 asection
*enclosing
;
1565 struct internal_reloc
*relocs
;
1566 bfd_size_type relindx
;
1567 struct internal_reloc
*rel
;
1569 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1570 if (enclosing
== NULL
)
1573 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1574 amt
= enclosing
->reloc_count
;
1575 relindx
= xcoff_find_reloc (relocs
, amt
, sym
.n_value
);
1576 rel
= relocs
+ relindx
;
1578 /* 32 bit R_POS r_size is 31
1579 64 bit R_POS r_size is 63 */
1580 if (relindx
< enclosing
->reloc_count
1581 && rel
->r_vaddr
== (bfd_vma
) sym
.n_value
1582 && rel
->r_type
== R_POS
1583 && ((bfd_xcoff_is_xcoff32 (abfd
)
1584 && rel
->r_size
== 31)
1585 || (bfd_xcoff_is_xcoff64 (abfd
)
1586 && rel
->r_size
== 63)))
1590 struct internal_syment relsym
;
1592 erelsym
= ((bfd_byte
*) obj_coff_external_syms (abfd
)
1593 + rel
->r_symndx
* symesz
);
1594 bfd_coff_swap_sym_in (abfd
, (void *) erelsym
, (void *) &relsym
);
1595 if (EXTERN_SYM_P (relsym
.n_sclass
))
1597 const char *relname
;
1598 char relbuf
[SYMNMLEN
+ 1];
1600 struct xcoff_link_hash_entry
*h
;
1602 /* At this point we know that the TOC entry is
1603 for an externally visible symbol. */
1604 relname
= _bfd_coff_internal_syment_name (abfd
, &relsym
,
1606 if (relname
== NULL
)
1609 /* We only merge TOC entries if the TC name is
1610 the same as the symbol name. This handles
1611 the normal case, but not common cases like
1612 SYM.P4 which gcc generates to store SYM + 4
1613 in the TOC. FIXME. */
1614 if (strcmp (name
, relname
) == 0)
1616 copy
= (! info
->keep_memory
1617 || relsym
._n
._n_n
._n_zeroes
!= 0
1618 || relsym
._n
._n_n
._n_offset
== 0);
1619 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1620 relname
, TRUE
, copy
,
1625 /* At this point h->root.type could be
1626 bfd_link_hash_new. That should be OK,
1627 since we know for sure that we will come
1628 across this symbol as we step through the
1631 /* We store h in *sym_hash for the
1632 convenience of the relocate_section
1636 if (h
->toc_section
!= NULL
)
1638 asection
**rel_csects
;
1640 /* We already have a TOC entry for this
1641 symbol, so we can just ignore this
1644 reloc_info
[enclosing
->target_index
].csects
;
1645 rel_csects
[relindx
] = bfd_und_section_ptr
;
1649 /* We are about to create a TOC entry for
1658 asection
*enclosing
;
1660 /* We need to create a new section. We get the name from
1661 the csect storage mapping class, so that the linker can
1662 accumulate similar csects together. */
1664 csect
= bfd_xcoff_create_csect_from_smclas(abfd
, &aux
, name
);
1668 /* The enclosing section is the main section : .data, .text
1669 or .bss that the csect is coming from. */
1670 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1671 if (enclosing
== NULL
)
1674 if (! bfd_is_abs_section (enclosing
)
1675 && ((bfd_vma
) sym
.n_value
< enclosing
->vma
1676 || ((bfd_vma
) sym
.n_value
+ aux
.x_csect
.x_scnlen
.l
1677 > enclosing
->vma
+ enclosing
->size
)))
1680 /* xgettext:c-format */
1681 (_("%pB: csect `%s' not in enclosing section"),
1683 bfd_set_error (bfd_error_bad_value
);
1686 csect
->vma
= sym
.n_value
;
1687 csect
->filepos
= (enclosing
->filepos
1690 csect
->size
= aux
.x_csect
.x_scnlen
.l
;
1691 csect
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
1692 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1694 /* Record the enclosing section in the tdata for this new
1696 amt
= sizeof (struct coff_section_tdata
);
1697 csect
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1698 if (csect
->used_by_bfd
== NULL
)
1700 amt
= sizeof (struct xcoff_section_tdata
);
1701 coff_section_data (abfd
, csect
)->tdata
= bfd_zalloc (abfd
, amt
);
1702 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1704 xcoff_section_data (abfd
, csect
)->enclosing
= enclosing
;
1705 xcoff_section_data (abfd
, csect
)->lineno_count
=
1706 enclosing
->lineno_count
;
1708 if (enclosing
->owner
== abfd
)
1710 struct internal_reloc
*relocs
;
1711 bfd_size_type relindx
;
1712 struct internal_reloc
*rel
;
1713 asection
**rel_csect
;
1715 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1716 amt
= enclosing
->reloc_count
;
1717 relindx
= xcoff_find_reloc (relocs
, amt
, csect
->vma
);
1719 rel
= relocs
+ relindx
;
1720 rel_csect
= (reloc_info
[enclosing
->target_index
].csects
1723 csect
->rel_filepos
= (enclosing
->rel_filepos
1724 + relindx
* bfd_coff_relsz (abfd
));
1725 while (relindx
< enclosing
->reloc_count
1726 && *rel_csect
== NULL
1727 && rel
->r_vaddr
< csect
->vma
+ csect
->size
)
1731 csect
->flags
|= SEC_RELOC
;
1732 ++csect
->reloc_count
;
1739 /* There are a number of other fields and section flags
1740 which we do not bother to set. */
1742 csect_index
= ((esym
1743 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1746 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1748 if (first_csect
== NULL
)
1749 first_csect
= csect
;
1751 /* If this symbol is external, we treat it as starting at the
1752 beginning of the newly created section. */
1753 if (EXTERN_SYM_P (sym
.n_sclass
))
1759 /* If this is a TOC section for a symbol, record it. */
1760 if (set_toc
!= NULL
)
1761 set_toc
->toc_section
= csect
;
1766 /* This is a label definition. The x_scnlen field is the
1767 symbol index of the csect. Usually the XTY_LD symbol will
1768 follow its appropriate XTY_SD symbol. The .set pseudo op can
1769 cause the XTY_LD to not follow the XTY_SD symbol. */
1774 if (aux
.x_csect
.x_scnlen
.l
< 0
1775 || (aux
.x_csect
.x_scnlen
.l
1776 >= esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)))
1780 section
= xcoff_data (abfd
)->csects
[aux
.x_csect
.x_scnlen
.l
];
1782 || (section
->flags
& SEC_HAS_CONTENTS
) == 0)
1788 /* xgettext:c-format */
1789 (_("%pB: misplaced XTY_LD `%s'"),
1791 bfd_set_error (bfd_error_bad_value
);
1795 value
= sym
.n_value
- csect
->vma
;
1800 /* This is an unitialized csect. We could base the name on
1801 the storage mapping class, but we don't bother except for
1802 an XMC_TD symbol. If this csect is externally visible,
1803 it is a common symbol. We put XMC_TD symbols in sections
1804 named .tocbss, and rely on the linker script to put that
1807 if (aux
.x_csect
.x_smclas
== XMC_TD
)
1809 /* The linker script puts the .td section in the data
1810 section after the .tc section. */
1811 csect
= bfd_make_section_anyway_with_flags (abfd
, ".td",
1815 csect
= bfd_make_section_anyway_with_flags (abfd
, ".bss",
1820 csect
->vma
= sym
.n_value
;
1821 csect
->size
= aux
.x_csect
.x_scnlen
.l
;
1822 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1823 /* There are a number of other fields and section flags
1824 which we do not bother to set. */
1826 csect_index
= ((esym
1827 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1830 amt
= sizeof (struct coff_section_tdata
);
1831 csect
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1832 if (csect
->used_by_bfd
== NULL
)
1834 amt
= sizeof (struct xcoff_section_tdata
);
1835 coff_section_data (abfd
, csect
)->tdata
= bfd_zalloc (abfd
, amt
);
1836 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1838 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1840 if (first_csect
== NULL
)
1841 first_csect
= csect
;
1843 if (EXTERN_SYM_P (sym
.n_sclass
))
1845 csect
->flags
|= SEC_IS_COMMON
;
1848 value
= aux
.x_csect
.x_scnlen
.l
;
1854 /* Check for magic symbol names. */
1855 if ((smtyp
== XTY_SD
|| smtyp
== XTY_CM
)
1856 && aux
.x_csect
.x_smclas
!= XMC_TC
1857 && aux
.x_csect
.x_smclas
!= XMC_TD
)
1863 if (strcmp (name
, "_text") == 0)
1864 i
= XCOFF_SPECIAL_SECTION_TEXT
;
1865 else if (strcmp (name
, "_etext") == 0)
1866 i
= XCOFF_SPECIAL_SECTION_ETEXT
;
1867 else if (strcmp (name
, "_data") == 0)
1868 i
= XCOFF_SPECIAL_SECTION_DATA
;
1869 else if (strcmp (name
, "_edata") == 0)
1870 i
= XCOFF_SPECIAL_SECTION_EDATA
;
1871 else if (strcmp (name
, "_end") == 0)
1872 i
= XCOFF_SPECIAL_SECTION_END
;
1874 else if (name
[0] == 'e' && strcmp (name
, "end") == 0)
1875 i
= XCOFF_SPECIAL_SECTION_END2
;
1878 xcoff_hash_table (info
)->special_sections
[i
] = csect
;
1881 /* Now we have enough information to add the symbol to the
1882 linker hash table. */
1884 if (EXTERN_SYM_P (sym
.n_sclass
))
1886 bfd_boolean copy
, ok
;
1889 BFD_ASSERT (section
!= NULL
);
1891 /* We must copy the name into memory if we got it from the
1892 syment itself, rather than the string table. */
1893 copy
= default_copy
;
1894 if (sym
._n
._n_n
._n_zeroes
!= 0
1895 || sym
._n
._n_n
._n_offset
== 0)
1898 /* Ignore global linkage code when linking statically. */
1899 if (info
->static_link
1900 && (smtyp
== XTY_SD
|| smtyp
== XTY_LD
)
1901 && aux
.x_csect
.x_smclas
== XMC_GL
)
1903 section
= bfd_und_section_ptr
;
1907 /* The AIX linker appears to only detect multiple symbol
1908 definitions when there is a reference to the symbol. If
1909 a symbol is defined multiple times, and the only
1910 references are from the same object file, the AIX linker
1911 appears to permit it. It does not merge the different
1912 definitions, but handles them independently. On the
1913 other hand, if there is a reference, the linker reports
1916 This matters because the AIX <net/net_globals.h> header
1917 file actually defines an initialized array, so we have to
1918 actually permit that to work.
1920 Just to make matters even more confusing, the AIX linker
1921 appears to permit multiple symbol definitions whenever
1922 the second definition is in an archive rather than an
1923 object file. This may be a consequence of the manner in
1924 which it handles archives: I think it may load the entire
1925 archive in as separate csects, and then let garbage
1926 collection discard symbols.
1928 We also have to handle the case of statically linking a
1929 shared object, which will cause symbol redefinitions,
1930 although this is an easier case to detect. */
1931 else if (info
->output_bfd
->xvec
== abfd
->xvec
)
1933 if (! bfd_is_und_section (section
))
1934 *sym_hash
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1935 name
, TRUE
, copy
, FALSE
);
1937 /* Make a copy of the symbol name to prevent problems with
1939 *sym_hash
= ((struct xcoff_link_hash_entry
*)
1940 bfd_wrapped_link_hash_lookup (abfd
, info
, name
,
1941 TRUE
, TRUE
, FALSE
));
1943 if (*sym_hash
== NULL
)
1945 if (((*sym_hash
)->root
.type
== bfd_link_hash_defined
1946 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
1947 && ! bfd_is_und_section (section
)
1948 && ! bfd_is_com_section (section
))
1950 /* This is a second definition of a defined symbol. */
1951 if (((*sym_hash
)->flags
& XCOFF_DEF_REGULAR
) == 0
1952 && ((*sym_hash
)->flags
& XCOFF_DEF_DYNAMIC
) != 0)
1954 /* The existing symbol is from a shared library.
1956 (*sym_hash
)->root
.type
= bfd_link_hash_undefined
;
1957 (*sym_hash
)->root
.u
.undef
.abfd
=
1958 (*sym_hash
)->root
.u
.def
.section
->owner
;
1960 else if (abfd
->my_archive
!= NULL
)
1962 /* This is a redefinition in an object contained
1963 in an archive. Just ignore it. See the
1965 section
= bfd_und_section_ptr
;
1968 else if (sym
.n_sclass
== C_AIX_WEAKEXT
1969 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
1971 /* At least one of the definitions is weak.
1972 Allow the normal rules to take effect. */
1974 else if ((*sym_hash
)->root
.u
.undef
.next
!= NULL
1975 || info
->hash
->undefs_tail
== &(*sym_hash
)->root
)
1977 /* This symbol has been referenced. In this
1978 case, we just continue and permit the
1979 multiple definition error. See the comment
1980 above about the behaviour of the AIX linker. */
1982 else if ((*sym_hash
)->smclas
== aux
.x_csect
.x_smclas
)
1984 /* The symbols are both csects of the same
1985 class. There is at least a chance that this
1986 is a semi-legitimate redefinition. */
1987 section
= bfd_und_section_ptr
;
1989 (*sym_hash
)->flags
|= XCOFF_MULTIPLY_DEFINED
;
1992 else if (((*sym_hash
)->flags
& XCOFF_MULTIPLY_DEFINED
) != 0
1993 && (*sym_hash
)->root
.type
== bfd_link_hash_defined
1994 && (bfd_is_und_section (section
)
1995 || bfd_is_com_section (section
)))
1997 /* This is a reference to a multiply defined symbol.
1998 Report the error now. See the comment above
1999 about the behaviour of the AIX linker. We could
2000 also do this with warning symbols, but I'm not
2001 sure the XCOFF linker is wholly prepared to
2002 handle them, and that would only be a warning,
2004 (*info
->callbacks
->multiple_definition
) (info
,
2008 /* Try not to give this error too many times. */
2009 (*sym_hash
)->flags
&= ~XCOFF_MULTIPLY_DEFINED
;
2013 /* _bfd_generic_link_add_one_symbol may call the linker to
2014 generate an error message, and the linker may try to read
2015 the symbol table to give a good error. Right now, the
2016 line numbers are in an inconsistent state, since they are
2017 counted both in the real sections and in the new csects.
2018 We need to leave the count in the real sections so that
2019 the linker can report the line number of the error
2020 correctly, so temporarily clobber the link to the csects
2021 so that the linker will not try to read the line numbers
2022 a second time from the csects. */
2023 BFD_ASSERT (last_real
->next
== first_csect
);
2024 last_real
->next
= NULL
;
2025 flags
= (sym
.n_sclass
== C_EXT
? BSF_GLOBAL
: BSF_WEAK
);
2026 ok
= (_bfd_generic_link_add_one_symbol
2027 (info
, abfd
, name
, flags
, section
, value
, NULL
, copy
, TRUE
,
2028 (struct bfd_link_hash_entry
**) sym_hash
));
2029 last_real
->next
= first_csect
;
2033 if (smtyp
== XTY_CM
)
2035 if ((*sym_hash
)->root
.type
!= bfd_link_hash_common
2036 || (*sym_hash
)->root
.u
.c
.p
->section
!= csect
)
2037 /* We don't need the common csect we just created. */
2040 (*sym_hash
)->root
.u
.c
.p
->alignment_power
2041 = csect
->alignment_power
;
2044 if (info
->output_bfd
->xvec
== abfd
->xvec
)
2050 || section
== bfd_und_section_ptr
)
2051 flag
= XCOFF_REF_REGULAR
;
2053 flag
= XCOFF_DEF_REGULAR
;
2054 (*sym_hash
)->flags
|= flag
;
2056 if ((*sym_hash
)->smclas
== XMC_UA
2057 || flag
== XCOFF_DEF_REGULAR
)
2058 (*sym_hash
)->smclas
= aux
.x_csect
.x_smclas
;
2062 if (smtyp
== XTY_ER
)
2063 *csect_cache
= section
;
2066 *csect_cache
= csect
;
2068 xcoff_section_data (abfd
, csect
)->last_symndx
2069 = (esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)) / symesz
;
2072 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2073 sym_hash
+= sym
.n_numaux
+ 1;
2074 csect_cache
+= sym
.n_numaux
+ 1;
2075 lineno_counts
+= sym
.n_numaux
+ 1;
2078 BFD_ASSERT (last_real
== NULL
|| last_real
->next
== first_csect
);
2080 /* Make sure that we have seen all the relocs. */
2081 for (o
= abfd
->sections
; o
!= first_csect
; o
= o
->next
)
2083 /* Debugging sections have no csects. */
2084 if (bfd_section_flags (o
) & SEC_DEBUGGING
)
2087 /* Reset the section size and the line number count, since the
2088 data is now attached to the csects. Don't reset the size of
2089 the .debug section, since we need to read it below in
2090 bfd_xcoff_size_dynamic_sections. */
2091 if (strcmp (bfd_section_name (o
), ".debug") != 0)
2093 o
->lineno_count
= 0;
2095 if ((o
->flags
& SEC_RELOC
) != 0)
2098 struct internal_reloc
*rel
;
2099 asection
**rel_csect
;
2101 rel
= reloc_info
[o
->target_index
].relocs
;
2102 rel_csect
= reloc_info
[o
->target_index
].csects
;
2104 for (i
= 0; i
< o
->reloc_count
; i
++, rel
++, rel_csect
++)
2106 if (*rel_csect
== NULL
)
2109 /* xgettext:c-format */
2110 (_("%pB: reloc %s:%" PRId64
" not in csect"),
2111 abfd
, o
->name
, (int64_t) i
);
2112 bfd_set_error (bfd_error_bad_value
);
2116 /* We identify all function symbols that are the target
2117 of a relocation, so that we can create glue code for
2118 functions imported from dynamic objects. */
2119 if (info
->output_bfd
->xvec
== abfd
->xvec
2120 && *rel_csect
!= bfd_und_section_ptr
2121 && obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
] != NULL
)
2123 struct xcoff_link_hash_entry
*h
;
2125 h
= obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
];
2126 /* If the symbol name starts with a period, it is
2127 the code of a function. If the symbol is
2128 currently undefined, then add an undefined symbol
2129 for the function descriptor. This should do no
2130 harm, because any regular object that defines the
2131 function should also define the function
2132 descriptor. It helps, because it means that we
2133 will identify the function descriptor with a
2134 dynamic object if a dynamic object defines it. */
2135 if (h
->root
.root
.string
[0] == '.'
2136 && h
->descriptor
== NULL
)
2138 struct xcoff_link_hash_entry
*hds
;
2139 struct bfd_link_hash_entry
*bh
;
2141 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2142 h
->root
.root
.string
+ 1,
2146 if (hds
->root
.type
== bfd_link_hash_new
)
2149 if (! (_bfd_generic_link_add_one_symbol
2150 (info
, abfd
, hds
->root
.root
.string
,
2151 (flagword
) 0, bfd_und_section_ptr
,
2152 (bfd_vma
) 0, NULL
, FALSE
,
2155 hds
= (struct xcoff_link_hash_entry
*) bh
;
2157 hds
->flags
|= XCOFF_DESCRIPTOR
;
2158 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
2159 hds
->descriptor
= h
;
2160 h
->descriptor
= hds
;
2162 if (h
->root
.root
.string
[0] == '.')
2163 h
->flags
|= XCOFF_CALLED
;
2167 free (reloc_info
[o
->target_index
].csects
);
2168 reloc_info
[o
->target_index
].csects
= NULL
;
2170 /* Reset SEC_RELOC and the reloc_count, since the reloc
2171 information is now attached to the csects. */
2172 o
->flags
&=~ SEC_RELOC
;
2175 /* If we are not keeping memory, free the reloc information. */
2176 if (! info
->keep_memory
2177 && coff_section_data (abfd
, o
) != NULL
2178 && coff_section_data (abfd
, o
)->relocs
!= NULL
2179 && ! coff_section_data (abfd
, o
)->keep_relocs
)
2181 free (coff_section_data (abfd
, o
)->relocs
);
2182 coff_section_data (abfd
, o
)->relocs
= NULL
;
2186 /* Free up the line numbers. FIXME: We could cache these
2187 somewhere for the final link, to avoid reading them again. */
2188 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2190 free (reloc_info
[o
->target_index
].linenos
);
2191 reloc_info
[o
->target_index
].linenos
= NULL
;
2197 obj_coff_keep_syms (abfd
) = keep_syms
;
2202 if (reloc_info
!= NULL
)
2204 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2206 if (reloc_info
[o
->target_index
].csects
!= NULL
)
2207 free (reloc_info
[o
->target_index
].csects
);
2208 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2209 free (reloc_info
[o
->target_index
].linenos
);
2213 obj_coff_keep_syms (abfd
) = keep_syms
;
2220 /* Add symbols from an XCOFF object file. */
2223 xcoff_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2225 if (! _bfd_coff_get_external_symbols (abfd
))
2227 if (! xcoff_link_add_symbols (abfd
, info
))
2229 if (! info
->keep_memory
)
2231 if (! _bfd_coff_free_symbols (abfd
))
2237 /* Look through the loader symbols to see if this dynamic object
2238 should be included in the link. The native linker uses the loader
2239 symbols, not the normal symbol table, so we do too. */
2242 xcoff_link_check_dynamic_ar_symbols (bfd
*abfd
,
2243 struct bfd_link_info
*info
,
2244 bfd_boolean
*pneeded
,
2249 struct internal_ldhdr ldhdr
;
2250 const char *strings
;
2251 bfd_byte
*elsym
, *elsymend
;
2255 lsec
= bfd_get_section_by_name (abfd
, ".loader");
2257 /* There are no symbols, so don't try to include it. */
2260 if (! xcoff_get_section_contents (abfd
, lsec
))
2262 contents
= coff_section_data (abfd
, lsec
)->contents
;
2264 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
2266 strings
= (char *) contents
+ ldhdr
.l_stoff
;
2268 elsym
= contents
+ bfd_xcoff_loader_symbol_offset (abfd
, &ldhdr
);
2270 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz (abfd
);
2271 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz (abfd
))
2273 struct internal_ldsym ldsym
;
2274 char nambuf
[SYMNMLEN
+ 1];
2276 struct bfd_link_hash_entry
*h
;
2278 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
2280 /* We are only interested in exported symbols. */
2281 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
2284 if (ldsym
._l
._l_l
._l_zeroes
== 0)
2285 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
2288 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
2289 nambuf
[SYMNMLEN
] = '\0';
2293 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2295 /* We are only interested in symbols that are currently
2296 undefined. At this point we know that we are using an XCOFF
2299 && h
->type
== bfd_link_hash_undefined
2300 && (((struct xcoff_link_hash_entry
*) h
)->flags
2301 & XCOFF_DEF_DYNAMIC
) == 0)
2303 if (!(*info
->callbacks
2304 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2311 /* We do not need this shared object. */
2312 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
2314 free (coff_section_data (abfd
, lsec
)->contents
);
2315 coff_section_data (abfd
, lsec
)->contents
= NULL
;
2321 /* Look through the symbols to see if this object file should be
2322 included in the link. */
2325 xcoff_link_check_ar_symbols (bfd
*abfd
,
2326 struct bfd_link_info
*info
,
2327 bfd_boolean
*pneeded
,
2330 bfd_size_type symesz
;
2336 if ((abfd
->flags
& DYNAMIC
) != 0
2337 && ! info
->static_link
2338 && info
->output_bfd
->xvec
== abfd
->xvec
)
2339 return xcoff_link_check_dynamic_ar_symbols (abfd
, info
, pneeded
, subsbfd
);
2341 symesz
= bfd_coff_symesz (abfd
);
2342 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
2343 esym_end
= esym
+ obj_raw_syment_count (abfd
) * symesz
;
2344 while (esym
< esym_end
)
2346 struct internal_syment sym
;
2348 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
2350 if (EXTERN_SYM_P (sym
.n_sclass
) && sym
.n_scnum
!= N_UNDEF
)
2353 char buf
[SYMNMLEN
+ 1];
2354 struct bfd_link_hash_entry
*h
;
2356 /* This symbol is externally visible, and is defined by this
2358 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
2362 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2364 /* We are only interested in symbols that are currently
2365 undefined. If a symbol is currently known to be common,
2366 XCOFF linkers do not bring in an object file which
2367 defines it. We also don't bring in symbols to satisfy
2368 undefined references in shared objects. */
2370 && h
->type
== bfd_link_hash_undefined
2371 && (info
->output_bfd
->xvec
!= abfd
->xvec
2372 || (((struct xcoff_link_hash_entry
*) h
)->flags
2373 & XCOFF_DEF_DYNAMIC
) == 0))
2375 if (!(*info
->callbacks
2376 ->add_archive_element
) (info
, abfd
, name
, subsbfd
))
2383 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2386 /* We do not need this object file. */
2390 /* Check a single archive element to see if we need to include it in
2391 the link. *PNEEDED is set according to whether this element is
2392 needed in the link or not. This is called via
2393 _bfd_generic_link_add_archive_symbols. */
2396 xcoff_link_check_archive_element (bfd
*abfd
,
2397 struct bfd_link_info
*info
,
2398 struct bfd_link_hash_entry
*h ATTRIBUTE_UNUSED
,
2399 const char *name ATTRIBUTE_UNUSED
,
2400 bfd_boolean
*pneeded
)
2402 bfd_boolean keep_syms_p
;
2405 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2406 if (!_bfd_coff_get_external_symbols (abfd
))
2410 if (!xcoff_link_check_ar_symbols (abfd
, info
, pneeded
, &abfd
))
2415 /* Potentially, the add_archive_element hook may have set a
2416 substitute BFD for us. */
2420 && !_bfd_coff_free_symbols (oldbfd
))
2422 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2423 if (!_bfd_coff_get_external_symbols (abfd
))
2426 if (!xcoff_link_add_symbols (abfd
, info
))
2428 if (info
->keep_memory
)
2434 if (!_bfd_coff_free_symbols (abfd
))
2441 /* Given an XCOFF BFD, add symbols to the global hash table as
2445 _bfd_xcoff_bfd_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2447 switch (bfd_get_format (abfd
))
2450 return xcoff_link_add_object_symbols (abfd
, info
);
2453 /* If the archive has a map, do the usual search. We then need
2454 to check the archive for dynamic objects, because they may not
2455 appear in the archive map even though they should, perhaps, be
2456 included. If the archive has no map, we just consider each object
2457 file in turn, since that apparently is what the AIX native linker
2459 if (bfd_has_map (abfd
))
2461 if (! (_bfd_generic_link_add_archive_symbols
2462 (abfd
, info
, xcoff_link_check_archive_element
)))
2469 member
= bfd_openr_next_archived_file (abfd
, NULL
);
2470 while (member
!= NULL
)
2472 if (bfd_check_format (member
, bfd_object
)
2473 && (info
->output_bfd
->xvec
== member
->xvec
)
2474 && (! bfd_has_map (abfd
) || (member
->flags
& DYNAMIC
) != 0))
2478 if (! xcoff_link_check_archive_element (member
, info
,
2479 NULL
, NULL
, &needed
))
2482 member
->archive_pass
= -1;
2484 member
= bfd_openr_next_archived_file (abfd
, member
);
2491 bfd_set_error (bfd_error_wrong_format
);
2497 _bfd_xcoff_define_common_symbol (bfd
*output_bfd ATTRIBUTE_UNUSED
,
2498 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
2499 struct bfd_link_hash_entry
*harg
)
2501 struct xcoff_link_hash_entry
*h
;
2503 if (!bfd_generic_define_common_symbol (output_bfd
, info
, harg
))
2506 h
= (struct xcoff_link_hash_entry
*) harg
;
2507 h
->flags
|= XCOFF_DEF_REGULAR
;
2511 /* If symbol H has not been interpreted as a function descriptor,
2512 see whether it should be. Set up its descriptor information if so. */
2515 xcoff_find_function (struct bfd_link_info
*info
,
2516 struct xcoff_link_hash_entry
*h
)
2518 if ((h
->flags
& XCOFF_DESCRIPTOR
) == 0
2519 && h
->root
.root
.string
[0] != '.')
2522 struct xcoff_link_hash_entry
*hfn
;
2525 amt
= strlen (h
->root
.root
.string
) + 2;
2526 fnname
= bfd_malloc (amt
);
2530 strcpy (fnname
+ 1, h
->root
.root
.string
);
2531 hfn
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2532 fnname
, FALSE
, FALSE
, TRUE
);
2535 && hfn
->smclas
== XMC_PR
2536 && (hfn
->root
.type
== bfd_link_hash_defined
2537 || hfn
->root
.type
== bfd_link_hash_defweak
))
2539 h
->flags
|= XCOFF_DESCRIPTOR
;
2540 h
->descriptor
= hfn
;
2541 hfn
->descriptor
= h
;
2547 /* Return true if the given bfd contains at least one shared object. */
2550 xcoff_archive_contains_shared_object_p (struct bfd_link_info
*info
,
2553 struct xcoff_archive_info
*archive_info
;
2556 archive_info
= xcoff_get_archive_info (info
, archive
);
2557 if (!archive_info
->know_contains_shared_object_p
)
2559 member
= bfd_openr_next_archived_file (archive
, NULL
);
2560 while (member
!= NULL
&& (member
->flags
& DYNAMIC
) == 0)
2561 member
= bfd_openr_next_archived_file (archive
, member
);
2563 archive_info
->contains_shared_object_p
= (member
!= NULL
);
2564 archive_info
->know_contains_shared_object_p
= 1;
2566 return archive_info
->contains_shared_object_p
;
2569 /* Symbol H qualifies for export by -bexpfull. Return true if it also
2570 qualifies for export by -bexpall. */
2573 xcoff_covered_by_expall_p (struct xcoff_link_hash_entry
*h
)
2575 /* Exclude symbols beginning with '_'. */
2576 if (h
->root
.root
.string
[0] == '_')
2579 /* Exclude archive members that would otherwise be unreferenced. */
2580 if ((h
->flags
& XCOFF_MARK
) == 0
2581 && (h
->root
.type
== bfd_link_hash_defined
2582 || h
->root
.type
== bfd_link_hash_defweak
)
2583 && h
->root
.u
.def
.section
->owner
!= NULL
2584 && h
->root
.u
.def
.section
->owner
->my_archive
!= NULL
)
2590 /* Return true if symbol H qualifies for the forms of automatic export
2591 specified by AUTO_EXPORT_FLAGS. */
2594 xcoff_auto_export_p (struct bfd_link_info
*info
,
2595 struct xcoff_link_hash_entry
*h
,
2596 unsigned int auto_export_flags
)
2598 /* Don't automatically export things that were explicitly exported. */
2599 if ((h
->flags
& XCOFF_EXPORT
) != 0)
2602 /* Don't export things that we don't define. */
2603 if ((h
->flags
& XCOFF_DEF_REGULAR
) == 0)
2606 /* Don't export functions; export their descriptors instead. */
2607 if (h
->root
.root
.string
[0] == '.')
2610 /* We don't export a symbol which is being defined by an object
2611 included from an archive which contains a shared object. The
2612 rationale is that if an archive contains both an unshared and
2613 a shared object, then there must be some reason that the
2614 unshared object is unshared, and we don't want to start
2615 providing a shared version of it. In particular, this solves
2616 a bug involving the _savefNN set of functions. gcc will call
2617 those functions without providing a slot to restore the TOC,
2618 so it is essential that these functions be linked in directly
2619 and not from a shared object, which means that a shared
2620 object which also happens to link them in must not export
2621 them. This is confusing, but I haven't been able to think of
2622 a different approach. Note that the symbols can, of course,
2623 be exported explicitly. */
2624 if (h
->root
.type
== bfd_link_hash_defined
2625 || h
->root
.type
== bfd_link_hash_defweak
)
2629 owner
= h
->root
.u
.def
.section
->owner
;
2631 && owner
->my_archive
!= NULL
2632 && xcoff_archive_contains_shared_object_p (info
, owner
->my_archive
))
2636 /* Otherwise, all symbols are exported by -bexpfull. */
2637 if ((auto_export_flags
& XCOFF_EXPFULL
) != 0)
2640 /* Despite its name, -bexpall exports most but not all symbols. */
2641 if ((auto_export_flags
& XCOFF_EXPALL
) != 0
2642 && xcoff_covered_by_expall_p (h
))
2648 /* Return true if relocation REL needs to be copied to the .loader section.
2649 If REL is against a global symbol, H is that symbol, otherwise it
2653 xcoff_need_ldrel_p (struct bfd_link_info
*info
, struct internal_reloc
*rel
,
2654 struct xcoff_link_hash_entry
*h
)
2656 if (!xcoff_hash_table (info
)->loader_section
)
2659 switch (rel
->r_type
)
2666 /* We should never need a .loader reloc for a TOC-relative reloc. */
2670 /* In this case, relocations against defined symbols can be resolved
2673 || h
->root
.type
== bfd_link_hash_defined
2674 || h
->root
.type
== bfd_link_hash_defweak
2675 || h
->root
.type
== bfd_link_hash_common
)
2678 /* We will always provide a local definition of function symbols,
2679 even if we don't have one yet. */
2680 if ((h
->flags
& XCOFF_CALLED
) != 0)
2689 /* Absolute relocations against absolute symbols can be
2690 resolved statically. */
2691 if (h
!= NULL
&& bfd_is_abs_symbol (&h
->root
))
2698 /* Mark a symbol as not being garbage, including the section in which
2701 static inline bfd_boolean
2702 xcoff_mark_symbol (struct bfd_link_info
*info
, struct xcoff_link_hash_entry
*h
)
2704 if ((h
->flags
& XCOFF_MARK
) != 0)
2707 h
->flags
|= XCOFF_MARK
;
2709 /* If we're marking an undefined symbol, try find some way of
2711 if (!bfd_link_relocatable (info
)
2712 && (h
->flags
& XCOFF_IMPORT
) == 0
2713 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
2714 && (h
->root
.type
== bfd_link_hash_undefined
2715 || h
->root
.type
== bfd_link_hash_undefweak
))
2717 /* First check whether this symbol can be interpreted as an
2718 undefined function descriptor for a defined function symbol. */
2719 if (!xcoff_find_function (info
, h
))
2722 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
2723 && (h
->descriptor
->root
.type
== bfd_link_hash_defined
2724 || h
->descriptor
->root
.type
== bfd_link_hash_defweak
))
2726 /* This is a descriptor for a defined symbol, but the input
2727 objects have not defined the descriptor itself. Fill in
2728 the definition automatically.
2730 Note that we do this even if we found a dynamic definition
2731 of H. The local function definition logically overrides
2735 sec
= xcoff_hash_table (info
)->descriptor_section
;
2736 h
->root
.type
= bfd_link_hash_defined
;
2737 h
->root
.u
.def
.section
= sec
;
2738 h
->root
.u
.def
.value
= sec
->size
;
2740 h
->flags
|= XCOFF_DEF_REGULAR
;
2742 /* The size of the function descriptor depends on whether this
2743 is xcoff32 (12) or xcoff64 (24). */
2744 sec
->size
+= bfd_xcoff_function_descriptor_size (sec
->owner
);
2746 /* A function descriptor uses two relocs: one for the
2747 associated code, and one for the TOC address. */
2748 xcoff_hash_table (info
)->ldrel_count
+= 2;
2749 sec
->reloc_count
+= 2;
2751 /* Mark the function itself. */
2752 if (!xcoff_mark_symbol (info
, h
->descriptor
))
2755 /* Mark the TOC section, so that we get an anchor
2756 to relocate against. */
2757 if (!xcoff_mark (info
, xcoff_hash_table (info
)->toc_section
))
2760 /* We handle writing out the contents of the descriptor in
2761 xcoff_write_global_symbol. */
2763 else if (info
->static_link
)
2764 /* We can't get a symbol value dynamically, so just assume
2765 that it's undefined. */
2766 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2767 else if ((h
->flags
& XCOFF_CALLED
) != 0)
2769 /* This is a function symbol for which we need to create
2772 struct xcoff_link_hash_entry
*hds
;
2774 /* Mark the descriptor (and its TOC section). */
2775 hds
= h
->descriptor
;
2776 BFD_ASSERT ((hds
->root
.type
== bfd_link_hash_undefined
2777 || hds
->root
.type
== bfd_link_hash_undefweak
)
2778 && (hds
->flags
& XCOFF_DEF_REGULAR
) == 0);
2779 if (!xcoff_mark_symbol (info
, hds
))
2782 /* Treat this symbol as undefined if the descriptor was. */
2783 if ((hds
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
2784 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2786 /* Allocate room for the global linkage code itself. */
2787 sec
= xcoff_hash_table (info
)->linkage_section
;
2788 h
->root
.type
= bfd_link_hash_defined
;
2789 h
->root
.u
.def
.section
= sec
;
2790 h
->root
.u
.def
.value
= sec
->size
;
2792 h
->flags
|= XCOFF_DEF_REGULAR
;
2793 sec
->size
+= bfd_xcoff_glink_code_size (info
->output_bfd
);
2795 /* The global linkage code requires a TOC entry for the
2797 if (hds
->toc_section
== NULL
)
2802 xcoff32 uses 4 bytes in the toc.
2803 xcoff64 uses 8 bytes in the toc. */
2804 if (bfd_xcoff_is_xcoff64 (info
->output_bfd
))
2806 else if (bfd_xcoff_is_xcoff32 (info
->output_bfd
))
2811 /* Allocate room in the fallback TOC section. */
2812 hds
->toc_section
= xcoff_hash_table (info
)->toc_section
;
2813 hds
->u
.toc_offset
= hds
->toc_section
->size
;
2814 hds
->toc_section
->size
+= byte_size
;
2815 if (!xcoff_mark (info
, hds
->toc_section
))
2818 /* Allocate room for a static and dynamic R_TOC
2820 ++xcoff_hash_table (info
)->ldrel_count
;
2821 ++hds
->toc_section
->reloc_count
;
2823 /* Set the index to -2 to force this symbol to
2826 hds
->flags
|= XCOFF_SET_TOC
| XCOFF_LDREL
;
2829 else if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0)
2831 /* Record that the symbol was undefined, then import it.
2832 -brtl links use a special fake import file. */
2833 h
->flags
|= XCOFF_WAS_UNDEFINED
| XCOFF_IMPORT
;
2834 if (xcoff_hash_table (info
)->rtld
)
2836 if (!xcoff_set_import_path (info
, h
, "", "..", ""))
2841 if (!xcoff_set_import_path (info
, h
, NULL
, NULL
, NULL
))
2847 if (h
->root
.type
== bfd_link_hash_defined
2848 || h
->root
.type
== bfd_link_hash_defweak
)
2852 hsec
= h
->root
.u
.def
.section
;
2853 if (! bfd_is_abs_section (hsec
)
2854 && (hsec
->flags
& SEC_MARK
) == 0)
2856 if (! xcoff_mark (info
, hsec
))
2861 if (h
->toc_section
!= NULL
2862 && (h
->toc_section
->flags
& SEC_MARK
) == 0)
2864 if (! xcoff_mark (info
, h
->toc_section
))
2871 /* Look for a symbol called NAME. If the symbol is defined, mark it.
2872 If the symbol exists, set FLAGS. */
2875 xcoff_mark_symbol_by_name (struct bfd_link_info
*info
,
2876 const char *name
, unsigned int flags
)
2878 struct xcoff_link_hash_entry
*h
;
2880 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
,
2881 FALSE
, FALSE
, TRUE
);
2885 if (h
->root
.type
== bfd_link_hash_defined
2886 || h
->root
.type
== bfd_link_hash_defweak
)
2888 if (!xcoff_mark (info
, h
->root
.u
.def
.section
))
2895 /* The mark phase of garbage collection. For a given section, mark
2896 it, and all the sections which define symbols to which it refers.
2897 Because this function needs to look at the relocs, we also count
2898 the number of relocs which need to be copied into the .loader
2902 xcoff_mark (struct bfd_link_info
*info
, asection
*sec
)
2904 if (bfd_is_abs_section (sec
)
2905 || (sec
->flags
& SEC_MARK
) != 0)
2908 sec
->flags
|= SEC_MARK
;
2910 if (sec
->owner
->xvec
== info
->output_bfd
->xvec
2911 && coff_section_data (sec
->owner
, sec
) != NULL
2912 && xcoff_section_data (sec
->owner
, sec
) != NULL
)
2914 struct xcoff_link_hash_entry
**syms
;
2915 struct internal_reloc
*rel
, *relend
;
2917 unsigned long i
, first
, last
;
2919 /* Mark all the symbols in this section. */
2920 syms
= obj_xcoff_sym_hashes (sec
->owner
);
2921 csects
= xcoff_data (sec
->owner
)->csects
;
2922 first
= xcoff_section_data (sec
->owner
, sec
)->first_symndx
;
2923 last
= xcoff_section_data (sec
->owner
, sec
)->last_symndx
;
2924 for (i
= first
; i
<= last
; i
++)
2925 if (csects
[i
] == sec
2927 && (syms
[i
]->flags
& XCOFF_MARK
) == 0)
2929 if (!xcoff_mark_symbol (info
, syms
[i
]))
2933 /* Look through the section relocs. */
2934 if ((sec
->flags
& SEC_RELOC
) != 0
2935 && sec
->reloc_count
> 0)
2937 rel
= xcoff_read_internal_relocs (sec
->owner
, sec
, TRUE
,
2941 relend
= rel
+ sec
->reloc_count
;
2942 for (; rel
< relend
; rel
++)
2944 struct xcoff_link_hash_entry
*h
;
2946 if ((unsigned int) rel
->r_symndx
2947 > obj_raw_syment_count (sec
->owner
))
2950 h
= obj_xcoff_sym_hashes (sec
->owner
)[rel
->r_symndx
];
2953 if ((h
->flags
& XCOFF_MARK
) == 0)
2955 if (!xcoff_mark_symbol (info
, h
))
2963 rsec
= xcoff_data (sec
->owner
)->csects
[rel
->r_symndx
];
2965 && (rsec
->flags
& SEC_MARK
) == 0)
2967 if (!xcoff_mark (info
, rsec
))
2972 /* See if this reloc needs to be copied into the .loader
2974 if (xcoff_need_ldrel_p (info
, rel
, h
))
2976 ++xcoff_hash_table (info
)->ldrel_count
;
2978 h
->flags
|= XCOFF_LDREL
;
2982 if (! info
->keep_memory
2983 && coff_section_data (sec
->owner
, sec
) != NULL
2984 && coff_section_data (sec
->owner
, sec
)->relocs
!= NULL
2985 && ! coff_section_data (sec
->owner
, sec
)->keep_relocs
)
2987 free (coff_section_data (sec
->owner
, sec
)->relocs
);
2988 coff_section_data (sec
->owner
, sec
)->relocs
= NULL
;
2996 /* Routines that are called after all the input files have been
2997 handled, but before the sections are laid out in memory. */
2999 /* The sweep phase of garbage collection. Remove all garbage
3003 xcoff_sweep (struct bfd_link_info
*info
)
3007 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3011 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3013 if ((o
->flags
& SEC_MARK
) == 0)
3015 /* Keep all sections from non-XCOFF input files. Keep
3016 special sections. Keep .debug sections for the
3018 if (sub
->xvec
!= info
->output_bfd
->xvec
3019 || o
== xcoff_hash_table (info
)->debug_section
3020 || o
== xcoff_hash_table (info
)->loader_section
3021 || o
== xcoff_hash_table (info
)->linkage_section
3022 || o
== xcoff_hash_table (info
)->descriptor_section
3023 || (bfd_section_flags (o
) & SEC_DEBUGGING
)
3024 || strcmp (o
->name
, ".debug") == 0)
3025 o
->flags
|= SEC_MARK
;
3036 /* Record the number of elements in a set. This is used to output the
3037 correct csect length. */
3040 bfd_xcoff_link_record_set (bfd
*output_bfd
,
3041 struct bfd_link_info
*info
,
3042 struct bfd_link_hash_entry
*harg
,
3045 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3046 struct xcoff_link_size_list
*n
;
3049 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3052 /* This will hardly ever be called. I don't want to burn four bytes
3053 per global symbol, so instead the size is kept on a linked list
3054 attached to the hash table. */
3056 n
= bfd_alloc (output_bfd
, amt
);
3059 n
->next
= xcoff_hash_table (info
)->size_list
;
3062 xcoff_hash_table (info
)->size_list
= n
;
3064 h
->flags
|= XCOFF_HAS_SIZE
;
3069 /* Import a symbol. */
3072 bfd_xcoff_import_symbol (bfd
*output_bfd
,
3073 struct bfd_link_info
*info
,
3074 struct bfd_link_hash_entry
*harg
,
3076 const char *imppath
,
3077 const char *impfile
,
3078 const char *impmember
,
3079 unsigned int syscall_flag
)
3081 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3083 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3086 /* A symbol name which starts with a period is the code for a
3087 function. If the symbol is undefined, then add an undefined
3088 symbol for the function descriptor, and import that instead. */
3089 if (h
->root
.root
.string
[0] == '.'
3090 && h
->root
.type
== bfd_link_hash_undefined
3091 && val
== (bfd_vma
) -1)
3093 struct xcoff_link_hash_entry
*hds
;
3095 hds
= h
->descriptor
;
3098 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3099 h
->root
.root
.string
+ 1,
3103 if (hds
->root
.type
== bfd_link_hash_new
)
3105 hds
->root
.type
= bfd_link_hash_undefined
;
3106 hds
->root
.u
.undef
.abfd
= h
->root
.u
.undef
.abfd
;
3108 hds
->flags
|= XCOFF_DESCRIPTOR
;
3109 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
3110 hds
->descriptor
= h
;
3111 h
->descriptor
= hds
;
3114 /* Now, if the descriptor is undefined, import the descriptor
3115 rather than the symbol we were told to import. FIXME: Is
3116 this correct in all cases? */
3117 if (hds
->root
.type
== bfd_link_hash_undefined
)
3121 h
->flags
|= (XCOFF_IMPORT
| syscall_flag
);
3123 if (val
!= (bfd_vma
) -1)
3125 if (h
->root
.type
== bfd_link_hash_defined
3126 && (!bfd_is_abs_symbol (&h
->root
)
3127 || h
->root
.u
.def
.value
!= val
))
3128 (*info
->callbacks
->multiple_definition
) (info
, &h
->root
, output_bfd
,
3129 bfd_abs_section_ptr
, val
);
3131 h
->root
.type
= bfd_link_hash_defined
;
3132 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3133 h
->root
.u
.def
.value
= val
;
3137 if (!xcoff_set_import_path (info
, h
, imppath
, impfile
, impmember
))
3143 /* Export a symbol. */
3146 bfd_xcoff_export_symbol (bfd
*output_bfd
,
3147 struct bfd_link_info
*info
,
3148 struct bfd_link_hash_entry
*harg
)
3150 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3152 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3155 h
->flags
|= XCOFF_EXPORT
;
3157 /* FIXME: I'm not at all sure what syscall is supposed to mean, so
3158 I'm just going to ignore it until somebody explains it. */
3160 /* Make sure we don't garbage collect this symbol. */
3161 if (! xcoff_mark_symbol (info
, h
))
3164 /* If this is a function descriptor, make sure we don't garbage
3165 collect the associated function code. We normally don't have to
3166 worry about this, because the descriptor will be attached to a
3167 section with relocs, but if we are creating the descriptor
3168 ourselves those relocs will not be visible to the mark code. */
3169 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3171 if (! xcoff_mark_symbol (info
, h
->descriptor
))
3178 /* Count a reloc against a symbol. This is called for relocs
3179 generated by the linker script, typically for global constructors
3183 bfd_xcoff_link_count_reloc (bfd
*output_bfd
,
3184 struct bfd_link_info
*info
,
3187 struct xcoff_link_hash_entry
*h
;
3189 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3192 h
= ((struct xcoff_link_hash_entry
*)
3193 bfd_wrapped_link_hash_lookup (output_bfd
, info
, name
, FALSE
, FALSE
,
3197 _bfd_error_handler (_("%s: no such symbol"), name
);
3198 bfd_set_error (bfd_error_no_symbols
);
3202 h
->flags
|= XCOFF_REF_REGULAR
;
3203 if (xcoff_hash_table (info
)->loader_section
)
3205 h
->flags
|= XCOFF_LDREL
;
3206 ++xcoff_hash_table (info
)->ldrel_count
;
3209 /* Mark the symbol to avoid garbage collection. */
3210 if (! xcoff_mark_symbol (info
, h
))
3216 /* This function is called for each symbol to which the linker script
3220 bfd_xcoff_record_link_assignment (bfd
*output_bfd
,
3221 struct bfd_link_info
*info
,
3224 struct xcoff_link_hash_entry
*h
;
3226 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3229 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
, TRUE
,
3234 h
->flags
|= XCOFF_DEF_REGULAR
;
3239 /* An xcoff_link_hash_traverse callback for which DATA points to an
3240 xcoff_loader_info. Mark all symbols that should be automatically
3244 xcoff_mark_auto_exports (struct xcoff_link_hash_entry
*h
, void *data
)
3246 struct xcoff_loader_info
*ldinfo
;
3248 ldinfo
= (struct xcoff_loader_info
*) data
;
3249 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3251 if (!xcoff_mark_symbol (ldinfo
->info
, h
))
3252 ldinfo
->failed
= TRUE
;
3257 /* Add a symbol to the .loader symbols, if necessary. */
3259 /* INPUT_BFD has an external symbol associated with hash table entry H
3260 and csect CSECT. Return true if INPUT_BFD defines H. */
3263 xcoff_final_definition_p (bfd
*input_bfd
, struct xcoff_link_hash_entry
*h
,
3266 switch (h
->root
.type
)
3268 case bfd_link_hash_defined
:
3269 case bfd_link_hash_defweak
:
3270 /* No input bfd owns absolute symbols. They are written by
3271 xcoff_write_global_symbol instead. */
3272 return (!bfd_is_abs_section (csect
)
3273 && h
->root
.u
.def
.section
== csect
);
3275 case bfd_link_hash_common
:
3276 return h
->root
.u
.c
.p
->section
->owner
== input_bfd
;
3278 case bfd_link_hash_undefined
:
3279 case bfd_link_hash_undefweak
:
3280 /* We can't treat undef.abfd as the owner because that bfd
3281 might be a dynamic object. Allow any bfd to claim it. */
3289 /* See if H should have a loader symbol associated with it. */
3292 xcoff_build_ldsym (struct xcoff_loader_info
*ldinfo
,
3293 struct xcoff_link_hash_entry
*h
)
3297 /* Warn if this symbol is exported but not defined. */
3298 if ((h
->flags
& XCOFF_EXPORT
) != 0
3299 && (h
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
3302 (_("warning: attempt to export undefined symbol `%s'"),
3303 h
->root
.root
.string
);
3307 /* We need to add a symbol to the .loader section if it is mentioned
3308 in a reloc which we are copying to the .loader section and it was
3309 not defined or common, or if it is the entry point, or if it is
3311 if (((h
->flags
& XCOFF_LDREL
) == 0
3312 || h
->root
.type
== bfd_link_hash_defined
3313 || h
->root
.type
== bfd_link_hash_defweak
3314 || h
->root
.type
== bfd_link_hash_common
)
3315 && (h
->flags
& XCOFF_ENTRY
) == 0
3316 && (h
->flags
& XCOFF_EXPORT
) == 0)
3319 /* We need to add this symbol to the .loader symbols. */
3321 BFD_ASSERT (h
->ldsym
== NULL
);
3322 amt
= sizeof (struct internal_ldsym
);
3323 h
->ldsym
= bfd_zalloc (ldinfo
->output_bfd
, amt
);
3324 if (h
->ldsym
== NULL
)
3326 ldinfo
->failed
= TRUE
;
3330 if ((h
->flags
& XCOFF_IMPORT
) != 0)
3332 /* Give imported descriptors class XMC_DS rather than XMC_UA. */
3333 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3335 h
->ldsym
->l_ifile
= h
->ldindx
;
3338 /* The first 3 symbol table indices are reserved to indicate the
3339 data, text and bss sections. */
3340 h
->ldindx
= ldinfo
->ldsym_count
+ 3;
3342 ++ldinfo
->ldsym_count
;
3344 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
->output_bfd
, ldinfo
,
3345 h
->ldsym
, h
->root
.root
.string
))
3348 h
->flags
|= XCOFF_BUILT_LDSYM
;
3352 /* An xcoff_htab_traverse callback that is called for each symbol
3353 once garbage collection is complete. */
3356 xcoff_post_gc_symbol (struct xcoff_link_hash_entry
*h
, void * p
)
3358 struct xcoff_loader_info
*ldinfo
= (struct xcoff_loader_info
*) p
;
3360 /* __rtinit, this symbol has special handling. */
3361 if (h
->flags
& XCOFF_RTINIT
)
3364 /* We don't want to garbage collect symbols which are not defined in
3365 XCOFF files. This is a convenient place to mark them. */
3366 if (xcoff_hash_table (ldinfo
->info
)->gc
3367 && (h
->flags
& XCOFF_MARK
) == 0
3368 && (h
->root
.type
== bfd_link_hash_defined
3369 || h
->root
.type
== bfd_link_hash_defweak
)
3370 && (h
->root
.u
.def
.section
->owner
== NULL
3371 || (h
->root
.u
.def
.section
->owner
->xvec
3372 != ldinfo
->info
->output_bfd
->xvec
)))
3373 h
->flags
|= XCOFF_MARK
;
3375 /* Skip discarded symbols. */
3376 if (xcoff_hash_table (ldinfo
->info
)->gc
3377 && (h
->flags
& XCOFF_MARK
) == 0)
3380 /* If this is still a common symbol, and it wasn't garbage
3381 collected, we need to actually allocate space for it in the .bss
3383 if (h
->root
.type
== bfd_link_hash_common
3384 && h
->root
.u
.c
.p
->section
->size
== 0)
3386 BFD_ASSERT (bfd_is_com_section (h
->root
.u
.c
.p
->section
));
3387 h
->root
.u
.c
.p
->section
->size
= h
->root
.u
.c
.size
;
3390 if (xcoff_hash_table (ldinfo
->info
)->loader_section
)
3392 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3393 h
->flags
|= XCOFF_EXPORT
;
3395 if (!xcoff_build_ldsym (ldinfo
, h
))
3402 /* INPUT_BFD includes XCOFF symbol ISYM, which is associated with linker
3403 hash table entry H and csect CSECT. AUX contains ISYM's auxillary
3404 csect information, if any. NAME is the function's name if the name
3405 is stored in the .debug section, otherwise it is null.
3407 Return 1 if we should include an appropriately-adjusted ISYM
3408 in the output file, 0 if we should discard ISYM, or -1 if an
3412 xcoff_keep_symbol_p (struct bfd_link_info
*info
, bfd
*input_bfd
,
3413 struct internal_syment
*isym
,
3414 union internal_auxent
*aux
,
3415 struct xcoff_link_hash_entry
*h
,
3416 asection
*csect
, const char *name
)
3420 /* If we are skipping this csect, we want to strip the symbol too. */
3424 /* Likewise if we garbage-collected the csect. */
3425 if (xcoff_hash_table (info
)->gc
3426 && !bfd_is_abs_section (csect
)
3427 && !bfd_is_und_section (csect
)
3428 && (csect
->flags
& SEC_MARK
) == 0)
3431 /* An XCOFF linker always removes C_STAT symbols. */
3432 if (isym
->n_sclass
== C_STAT
)
3435 /* We generate the TOC anchor separately. */
3436 if (isym
->n_sclass
== C_HIDEXT
3437 && aux
->x_csect
.x_smclas
== XMC_TC0
)
3440 /* If we are stripping all symbols, we want to discard this one. */
3441 if (info
->strip
== strip_all
)
3444 /* Discard symbols that are defined elsewhere. */
3445 if (EXTERN_SYM_P (isym
->n_sclass
))
3447 if ((h
->flags
& XCOFF_ALLOCATED
) != 0)
3449 if (!xcoff_final_definition_p (input_bfd
, h
, csect
))
3453 /* If we're discarding local symbols, check whether ISYM is local. */
3454 smtyp
= SMTYP_SMTYP (aux
->x_csect
.x_smtyp
);
3455 if (info
->discard
== discard_all
3456 && !EXTERN_SYM_P (isym
->n_sclass
)
3457 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
))
3460 /* If we're stripping debugging symbols, check whether ISYM is one. */
3461 if (info
->strip
== strip_debugger
3462 && isym
->n_scnum
== N_DEBUG
)
3465 /* If we are stripping symbols based on name, check how ISYM's
3466 name should be handled. */
3467 if (info
->strip
== strip_some
3468 || info
->discard
== discard_l
)
3470 char buf
[SYMNMLEN
+ 1];
3474 name
= _bfd_coff_internal_syment_name (input_bfd
, isym
, buf
);
3479 if (info
->strip
== strip_some
3480 && bfd_hash_lookup (info
->keep_hash
, name
, FALSE
, FALSE
) == NULL
)
3483 if (info
->discard
== discard_l
3484 && !EXTERN_SYM_P (isym
->n_sclass
)
3485 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
)
3486 && bfd_is_local_label_name (input_bfd
, name
))
3493 /* Lay out the .loader section, filling in the header and the import paths.
3494 LIBPATH is as for bfd_xcoff_size_dynamic_sections. */
3497 xcoff_build_loader_section (struct xcoff_loader_info
*ldinfo
,
3498 const char *libpath
)
3501 struct xcoff_link_hash_table
*htab
;
3502 struct internal_ldhdr
*ldhdr
;
3503 struct xcoff_import_file
*fl
;
3504 bfd_size_type stoff
;
3505 size_t impsize
, impcount
;
3509 /* Work out the size of the import file names. Each import file ID
3510 consists of three null terminated strings: the path, the file
3511 name, and the archive member name. The first entry in the list
3512 of names is the path to use to find objects, which the linker has
3513 passed in as the libpath argument. For some reason, the path
3514 entry in the other import file names appears to always be empty. */
3515 output_bfd
= ldinfo
->output_bfd
;
3516 htab
= xcoff_hash_table (ldinfo
->info
);
3517 impsize
= strlen (libpath
) + 3;
3519 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3522 impsize
+= (strlen (fl
->path
)
3524 + strlen (fl
->member
)
3528 /* Set up the .loader section header. */
3529 ldhdr
= &htab
->ldhdr
;
3530 ldhdr
->l_version
= bfd_xcoff_ldhdr_version(output_bfd
);
3531 ldhdr
->l_nsyms
= ldinfo
->ldsym_count
;
3532 ldhdr
->l_nreloc
= htab
->ldrel_count
;
3533 ldhdr
->l_istlen
= impsize
;
3534 ldhdr
->l_nimpid
= impcount
;
3535 ldhdr
->l_impoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3536 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
)
3537 + ldhdr
->l_nreloc
* bfd_xcoff_ldrelsz (output_bfd
));
3538 ldhdr
->l_stlen
= ldinfo
->string_size
;
3539 stoff
= ldhdr
->l_impoff
+ impsize
;
3540 if (ldinfo
->string_size
== 0)
3543 ldhdr
->l_stoff
= stoff
;
3545 /* 64 bit elements to ldhdr
3546 The swap out routine for 32 bit will ignore them.
3547 Nothing fancy, symbols come after the header and relocs come
3549 ldhdr
->l_symoff
= bfd_xcoff_ldhdrsz (output_bfd
);
3550 ldhdr
->l_rldoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3551 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
));
3553 /* We now know the final size of the .loader section. Allocate
3555 lsec
= htab
->loader_section
;
3556 lsec
->size
= stoff
+ ldhdr
->l_stlen
;
3557 lsec
->contents
= bfd_zalloc (output_bfd
, lsec
->size
);
3558 if (lsec
->contents
== NULL
)
3561 /* Set up the header. */
3562 bfd_xcoff_swap_ldhdr_out (output_bfd
, ldhdr
, lsec
->contents
);
3564 /* Set up the import file names. */
3565 out
= (char *) lsec
->contents
+ ldhdr
->l_impoff
;
3566 strcpy (out
, libpath
);
3567 out
+= strlen (libpath
) + 1;
3570 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3575 while ((*out
++ = *s
++) != '\0')
3578 while ((*out
++ = *s
++) != '\0')
3581 while ((*out
++ = *s
++) != '\0')
3585 BFD_ASSERT ((bfd_size_type
) ((bfd_byte
*) out
- lsec
->contents
) == stoff
);
3587 /* Set up the symbol string table. */
3588 if (ldinfo
->string_size
> 0)
3590 memcpy (out
, ldinfo
->strings
, ldinfo
->string_size
);
3591 free (ldinfo
->strings
);
3592 ldinfo
->strings
= NULL
;
3595 /* We can't set up the symbol table or the relocs yet, because we
3596 don't yet know the final position of the various sections. The
3597 .loader symbols are written out when the corresponding normal
3598 symbols are written out in xcoff_link_input_bfd or
3599 xcoff_write_global_symbol. The .loader relocs are written out
3600 when the corresponding normal relocs are handled in
3601 xcoff_link_input_bfd. */
3606 /* Build the .loader section. This is called by the XCOFF linker
3607 emulation before_allocation routine. We must set the size of the
3608 .loader section before the linker lays out the output file.
3609 LIBPATH is the library path to search for shared objects; this is
3610 normally built from the -L arguments passed to the linker. ENTRY
3611 is the name of the entry point symbol (the -e linker option).
3612 FILE_ALIGN is the alignment to use for sections within the file
3613 (the -H linker option). MAXSTACK is the maximum stack size (the
3614 -bmaxstack linker option). MAXDATA is the maximum data size (the
3615 -bmaxdata linker option). GC is whether to do garbage collection
3616 (the -bgc linker option). MODTYPE is the module type (the
3617 -bmodtype linker option). TEXTRO is whether the text section must
3618 be read only (the -btextro linker option). AUTO_EXPORT_FLAGS
3619 is a mask of XCOFF_EXPALL and XCOFF_EXPFULL. SPECIAL_SECTIONS
3620 is set by this routine to csects with magic names like _end. */
3623 bfd_xcoff_size_dynamic_sections (bfd
*output_bfd
,
3624 struct bfd_link_info
*info
,
3625 const char *libpath
,
3627 unsigned long file_align
,
3628 unsigned long maxstack
,
3629 unsigned long maxdata
,
3633 unsigned int auto_export_flags
,
3634 asection
**special_sections
,
3637 struct xcoff_loader_info ldinfo
;
3641 struct bfd_strtab_hash
*debug_strtab
;
3642 bfd_byte
*debug_contents
= NULL
;
3645 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3647 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3648 special_sections
[i
] = NULL
;
3652 ldinfo
.failed
= FALSE
;
3653 ldinfo
.output_bfd
= output_bfd
;
3655 ldinfo
.auto_export_flags
= auto_export_flags
;
3656 ldinfo
.ldsym_count
= 0;
3657 ldinfo
.string_size
= 0;
3658 ldinfo
.strings
= NULL
;
3659 ldinfo
.string_alc
= 0;
3661 xcoff_data (output_bfd
)->maxstack
= maxstack
;
3662 xcoff_data (output_bfd
)->maxdata
= maxdata
;
3663 xcoff_data (output_bfd
)->modtype
= modtype
;
3665 xcoff_hash_table (info
)->file_align
= file_align
;
3666 xcoff_hash_table (info
)->textro
= textro
;
3667 xcoff_hash_table (info
)->rtld
= rtld
;
3670 if (xcoff_hash_table (info
)->loader_section
3671 && (info
->init_function
|| info
->fini_function
|| rtld
))
3673 struct xcoff_link_hash_entry
*hsym
;
3674 struct internal_ldsym
*ldsym
;
3676 hsym
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3677 "__rtinit", FALSE
, FALSE
, TRUE
);
3681 (_("error: undefined symbol __rtinit"));
3685 xcoff_mark_symbol (info
, hsym
);
3686 hsym
->flags
|= (XCOFF_DEF_REGULAR
| XCOFF_RTINIT
);
3688 /* __rtinit initialized. */
3689 amt
= sizeof (* ldsym
);
3690 ldsym
= bfd_malloc (amt
);
3692 ldsym
->l_value
= 0; /* Will be filled in later. */
3693 ldsym
->l_scnum
= 2; /* Data section. */
3694 ldsym
->l_smtype
= XTY_SD
; /* Csect section definition. */
3695 ldsym
->l_smclas
= 5; /* .rw. */
3696 ldsym
->l_ifile
= 0; /* Special system loader symbol. */
3697 ldsym
->l_parm
= 0; /* NA. */
3699 /* Force __rtinit to be the first symbol in the loader symbol table
3700 See xcoff_build_ldsyms
3702 The first 3 symbol table indices are reserved to indicate the data,
3703 text and bss sections. */
3704 BFD_ASSERT (0 == ldinfo
.ldsym_count
);
3707 ldinfo
.ldsym_count
= 1;
3708 hsym
->ldsym
= ldsym
;
3710 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
.output_bfd
, &ldinfo
,
3711 hsym
->ldsym
, hsym
->root
.root
.string
))
3714 /* This symbol is written out by xcoff_write_global_symbol
3715 Set stuff up so xcoff_write_global_symbol logic works. */
3716 hsym
->flags
|= XCOFF_DEF_REGULAR
| XCOFF_MARK
;
3717 hsym
->root
.type
= bfd_link_hash_defined
;
3718 hsym
->root
.u
.def
.value
= 0;
3721 /* Garbage collect unused sections. */
3722 if (bfd_link_relocatable (info
) || !gc
)
3725 xcoff_hash_table (info
)->gc
= FALSE
;
3727 /* We still need to call xcoff_mark, in order to set ldrel_count
3729 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3733 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3735 /* We shouldn't unconditionaly mark the TOC section.
3736 The output file should only have a TOC if either
3737 (a) one of the input files did or (b) we end up
3738 creating TOC references as part of the link process. */
3739 if (o
!= xcoff_hash_table (info
)->toc_section
3740 && (o
->flags
& SEC_MARK
) == 0)
3742 if (! xcoff_mark (info
, o
))
3751 && !xcoff_mark_symbol_by_name (info
, entry
, XCOFF_ENTRY
))
3753 if (info
->init_function
!= NULL
3754 && !xcoff_mark_symbol_by_name (info
, info
->init_function
, 0))
3756 if (info
->fini_function
!= NULL
3757 && !xcoff_mark_symbol_by_name (info
, info
->fini_function
, 0))
3759 if (auto_export_flags
!= 0)
3761 xcoff_link_hash_traverse (xcoff_hash_table (info
),
3762 xcoff_mark_auto_exports
, &ldinfo
);
3767 xcoff_hash_table (info
)->gc
= TRUE
;
3770 /* Return special sections to the caller. */
3771 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3773 sec
= xcoff_hash_table (info
)->special_sections
[i
];
3777 && (sec
->flags
& SEC_MARK
) == 0)
3780 special_sections
[i
] = sec
;
3783 if (info
->input_bfds
== NULL
)
3784 /* I'm not sure what to do in this bizarre case. */
3787 xcoff_link_hash_traverse (xcoff_hash_table (info
), xcoff_post_gc_symbol
,
3792 if (xcoff_hash_table (info
)->loader_section
3793 && !xcoff_build_loader_section (&ldinfo
, libpath
))
3796 /* Allocate space for the magic sections. */
3797 sec
= xcoff_hash_table (info
)->linkage_section
;
3800 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3801 if (sec
->contents
== NULL
)
3804 sec
= xcoff_hash_table (info
)->toc_section
;
3807 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3808 if (sec
->contents
== NULL
)
3811 sec
= xcoff_hash_table (info
)->descriptor_section
;
3814 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3815 if (sec
->contents
== NULL
)
3819 /* Now that we've done garbage collection, decide which symbols to keep,
3820 and figure out the contents of the .debug section. */
3821 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
3823 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
3826 bfd_size_type symcount
;
3829 unsigned int *lineno_counts
;
3830 struct xcoff_link_hash_entry
**sym_hash
;
3831 bfd_byte
*esym
, *esymend
;
3832 bfd_size_type symesz
;
3834 if (sub
->xvec
!= info
->output_bfd
->xvec
)
3837 if ((sub
->flags
& DYNAMIC
) != 0
3838 && !info
->static_link
)
3841 if (! _bfd_coff_get_external_symbols (sub
))
3844 symcount
= obj_raw_syment_count (sub
);
3845 debug_index
= bfd_zalloc (sub
, symcount
* sizeof (long));
3846 if (debug_index
== NULL
)
3848 xcoff_data (sub
)->debug_indices
= debug_index
;
3850 if (info
->strip
== strip_all
3851 || info
->strip
== strip_debugger
3852 || info
->discard
== discard_all
)
3853 /* We're stripping all debugging information, so there's no need
3854 to read SUB's .debug section. */
3858 /* Grab the contents of SUB's .debug section, if any. */
3859 subdeb
= bfd_get_section_by_name (sub
, ".debug");
3860 if (subdeb
!= NULL
&& subdeb
->size
> 0)
3862 /* We use malloc and copy the names into the debug
3863 stringtab, rather than bfd_alloc, because I expect
3864 that, when linking many files together, many of the
3865 strings will be the same. Storing the strings in the
3866 hash table should save space in this case. */
3867 if (!bfd_malloc_and_get_section (sub
, subdeb
, &debug_contents
))
3872 csectpp
= xcoff_data (sub
)->csects
;
3873 lineno_counts
= xcoff_data (sub
)->lineno_counts
;
3874 sym_hash
= obj_xcoff_sym_hashes (sub
);
3875 symesz
= bfd_coff_symesz (sub
);
3876 esym
= (bfd_byte
*) obj_coff_external_syms (sub
);
3877 esymend
= esym
+ symcount
* symesz
;
3879 while (esym
< esymend
)
3881 struct internal_syment sym
;
3882 union internal_auxent aux
;
3887 bfd_coff_swap_sym_in (sub
, esym
, &sym
);
3889 /* Read in the csect information, if any. */
3890 if (CSECT_SYM_P (sym
.n_sclass
))
3892 BFD_ASSERT (sym
.n_numaux
> 0);
3893 bfd_coff_swap_aux_in (sub
, esym
+ symesz
* sym
.n_numaux
,
3894 sym
.n_type
, sym
.n_sclass
,
3895 sym
.n_numaux
- 1, sym
.n_numaux
, &aux
);
3898 /* If this symbol's name is stored in the debug section,
3899 get a pointer to it. */
3900 if (debug_contents
!= NULL
3901 && sym
._n
._n_n
._n_zeroes
== 0
3902 && bfd_coff_symname_in_debug (sub
, &sym
))
3903 name
= (const char *) debug_contents
+ sym
._n
._n_n
._n_offset
;
3907 /* Decide whether to copy this symbol to the output file. */
3909 keep_p
= xcoff_keep_symbol_p (info
, sub
, &sym
, &aux
,
3910 *sym_hash
, csect
, name
);
3915 /* Use a debug_index of -2 to record that a symbol should
3920 /* See whether we should store the symbol name in the
3921 output .debug section. */
3926 indx
= _bfd_stringtab_add (debug_strtab
, name
, TRUE
, TRUE
);
3927 if (indx
== (bfd_size_type
) -1)
3929 *debug_index
= indx
;
3934 (*sym_hash
)->flags
|= XCOFF_ALLOCATED
;
3935 if (*lineno_counts
> 0)
3936 csect
->output_section
->lineno_count
+= *lineno_counts
;
3939 esym
+= (sym
.n_numaux
+ 1) * symesz
;
3940 csectpp
+= sym
.n_numaux
+ 1;
3941 sym_hash
+= sym
.n_numaux
+ 1;
3942 lineno_counts
+= sym
.n_numaux
+ 1;
3943 debug_index
+= sym
.n_numaux
+ 1;
3948 free (debug_contents
);
3949 debug_contents
= NULL
;
3951 /* Clear the size of subdeb, so that it is not included directly
3952 in the output file. */
3956 if (! info
->keep_memory
)
3958 if (! _bfd_coff_free_symbols (sub
))
3963 if (info
->strip
!= strip_all
)
3964 xcoff_hash_table (info
)->debug_section
->size
=
3965 _bfd_stringtab_size (debug_strtab
);
3970 if (ldinfo
.strings
!= NULL
)
3971 free (ldinfo
.strings
);
3972 if (debug_contents
!= NULL
)
3973 free (debug_contents
);
3978 bfd_xcoff_link_generate_rtinit (bfd
*abfd
,
3983 struct bfd_in_memory
*bim
;
3985 bim
= bfd_malloc ((bfd_size_type
) sizeof (* bim
));
3992 abfd
->link
.next
= 0;
3993 abfd
->format
= bfd_object
;
3994 abfd
->iostream
= (void *) bim
;
3995 abfd
->flags
= BFD_IN_MEMORY
;
3996 abfd
->iovec
= &_bfd_memory_iovec
;
3997 abfd
->direction
= write_direction
;
4001 if (! bfd_xcoff_generate_rtinit (abfd
, init
, fini
, rtld
))
4004 /* need to reset to unknown or it will not be read back in correctly */
4005 abfd
->format
= bfd_unknown
;
4006 abfd
->direction
= read_direction
;
4012 /* Return the section that defines H. Return null if no section does. */
4015 xcoff_symbol_section (struct xcoff_link_hash_entry
*h
)
4017 switch (h
->root
.type
)
4019 case bfd_link_hash_defined
:
4020 case bfd_link_hash_defweak
:
4021 return h
->root
.u
.def
.section
;
4023 case bfd_link_hash_common
:
4024 return h
->root
.u
.c
.p
->section
;
4031 /* Add a .loader relocation for input relocation IREL. If the loader
4032 relocation should be against an output section, HSEC points to the
4033 input section that IREL is against, otherwise HSEC is null. H is the
4034 symbol that IREL is against, or null if it isn't against a global symbol.
4035 REFERENCE_BFD is the bfd to use in error messages about the relocation. */
4038 xcoff_create_ldrel (bfd
*output_bfd
, struct xcoff_final_link_info
*flinfo
,
4039 asection
*output_section
, bfd
*reference_bfd
,
4040 struct internal_reloc
*irel
, asection
*hsec
,
4041 struct xcoff_link_hash_entry
*h
)
4043 struct internal_ldrel ldrel
;
4045 ldrel
.l_vaddr
= irel
->r_vaddr
;
4048 const char *secname
;
4050 secname
= hsec
->output_section
->name
;
4051 if (strcmp (secname
, ".text") == 0)
4053 else if (strcmp (secname
, ".data") == 0)
4055 else if (strcmp (secname
, ".bss") == 0)
4060 /* xgettext:c-format */
4061 (_("%pB: loader reloc in unrecognized section `%s'"),
4062 reference_bfd
, secname
);
4063 bfd_set_error (bfd_error_nonrepresentable_section
);
4072 /* xgettext:c-format */
4073 (_("%pB: `%s' in loader reloc but not loader sym"),
4074 reference_bfd
, h
->root
.root
.string
);
4075 bfd_set_error (bfd_error_bad_value
);
4078 ldrel
.l_symndx
= h
->ldindx
;
4081 ldrel
.l_symndx
= -(bfd_size_type
) 1;
4083 ldrel
.l_rtype
= (irel
->r_size
<< 8) | irel
->r_type
;
4084 ldrel
.l_rsecnm
= output_section
->target_index
;
4085 if (xcoff_hash_table (flinfo
->info
)->textro
4086 && strcmp (output_section
->name
, ".text") == 0)
4089 /* xgettext:c-format */
4090 (_("%pB: loader reloc in read-only section %pA"),
4091 reference_bfd
, output_section
);
4092 bfd_set_error (bfd_error_invalid_operation
);
4095 bfd_xcoff_swap_ldrel_out (output_bfd
, &ldrel
, flinfo
->ldrel
);
4096 flinfo
->ldrel
+= bfd_xcoff_ldrelsz (output_bfd
);
4100 /* Link an input file into the linker output file. This function
4101 handles all the sections and relocations of the input file at once. */
4104 xcoff_link_input_bfd (struct xcoff_final_link_info
*flinfo
,
4108 const char *strings
;
4109 bfd_size_type syment_base
;
4110 unsigned int n_tmask
;
4111 unsigned int n_btshft
;
4112 bfd_boolean copy
, hash
;
4113 bfd_size_type isymesz
;
4114 bfd_size_type osymesz
;
4115 bfd_size_type linesz
;
4118 struct xcoff_link_hash_entry
**sym_hash
;
4119 struct internal_syment
*isymp
;
4121 unsigned int *lineno_counts
;
4124 unsigned long output_index
;
4128 bfd_boolean keep_syms
;
4131 /* We can just skip DYNAMIC files, unless this is a static link. */
4132 if ((input_bfd
->flags
& DYNAMIC
) != 0
4133 && ! flinfo
->info
->static_link
)
4136 /* Move all the symbols to the output file. */
4137 output_bfd
= flinfo
->output_bfd
;
4139 syment_base
= obj_raw_syment_count (output_bfd
);
4140 isymesz
= bfd_coff_symesz (input_bfd
);
4141 osymesz
= bfd_coff_symesz (output_bfd
);
4142 linesz
= bfd_coff_linesz (input_bfd
);
4143 BFD_ASSERT (linesz
== bfd_coff_linesz (output_bfd
));
4145 n_tmask
= coff_data (input_bfd
)->local_n_tmask
;
4146 n_btshft
= coff_data (input_bfd
)->local_n_btshft
;
4148 /* Define macros so that ISFCN, et. al., macros work correctly. */
4149 #define N_TMASK n_tmask
4150 #define N_BTSHFT n_btshft
4153 if (! flinfo
->info
->keep_memory
)
4156 if (flinfo
->info
->traditional_format
)
4159 if (! _bfd_coff_get_external_symbols (input_bfd
))
4162 /* Make one pass over the symbols and assign indices to symbols that
4163 we have decided to keep. Also use create .loader symbol information
4164 and update information in hash table entries. */
4165 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4166 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4167 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4168 csectpp
= xcoff_data (input_bfd
)->csects
;
4169 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4170 isymp
= flinfo
->internal_syms
;
4171 indexp
= flinfo
->sym_indices
;
4172 output_index
= syment_base
;
4173 while (esym
< esym_end
)
4175 union internal_auxent aux
;
4179 bfd_coff_swap_sym_in (input_bfd
, (void *) esym
, (void *) isymp
);
4181 /* Read in the csect information, if any. */
4182 if (CSECT_SYM_P (isymp
->n_sclass
))
4184 BFD_ASSERT (isymp
->n_numaux
> 0);
4185 bfd_coff_swap_aux_in (input_bfd
,
4186 (void *) (esym
+ isymesz
* isymp
->n_numaux
),
4187 isymp
->n_type
, isymp
->n_sclass
,
4188 isymp
->n_numaux
- 1, isymp
->n_numaux
,
4191 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
4194 /* If this symbol is in the .loader section, swap out the
4195 .loader symbol information. If this is an external symbol
4196 reference to a defined symbol, though, then wait until we get
4197 to the definition. */
4198 if (EXTERN_SYM_P (isymp
->n_sclass
)
4199 && *sym_hash
!= NULL
4200 && (*sym_hash
)->ldsym
!= NULL
4201 && xcoff_final_definition_p (input_bfd
, *sym_hash
, *csectpp
))
4203 struct xcoff_link_hash_entry
*h
;
4204 struct internal_ldsym
*ldsym
;
4208 if (isymp
->n_scnum
> 0)
4210 ldsym
->l_scnum
= (*csectpp
)->output_section
->target_index
;
4211 ldsym
->l_value
= (isymp
->n_value
4212 + (*csectpp
)->output_section
->vma
4213 + (*csectpp
)->output_offset
4218 ldsym
->l_scnum
= isymp
->n_scnum
;
4219 ldsym
->l_value
= isymp
->n_value
;
4222 ldsym
->l_smtype
= smtyp
;
4223 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
4224 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4225 || (h
->flags
& XCOFF_IMPORT
) != 0)
4226 ldsym
->l_smtype
|= L_IMPORT
;
4227 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
4228 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4229 || (h
->flags
& XCOFF_EXPORT
) != 0)
4230 ldsym
->l_smtype
|= L_EXPORT
;
4231 if ((h
->flags
& XCOFF_ENTRY
) != 0)
4232 ldsym
->l_smtype
|= L_ENTRY
;
4233 if (isymp
->n_sclass
== C_AIX_WEAKEXT
)
4234 ldsym
->l_smtype
|= L_WEAK
;
4236 ldsym
->l_smclas
= aux
.x_csect
.x_smclas
;
4238 if (ldsym
->l_ifile
== (bfd_size_type
) -1)
4240 else if (ldsym
->l_ifile
== 0)
4242 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
4248 if (h
->root
.type
== bfd_link_hash_defined
4249 || h
->root
.type
== bfd_link_hash_defweak
)
4250 impbfd
= h
->root
.u
.def
.section
->owner
;
4251 else if (h
->root
.type
== bfd_link_hash_undefined
4252 || h
->root
.type
== bfd_link_hash_undefweak
)
4253 impbfd
= h
->root
.u
.undef
.abfd
;
4261 BFD_ASSERT (impbfd
->xvec
== flinfo
->output_bfd
->xvec
);
4262 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
4269 BFD_ASSERT (h
->ldindx
>= 0);
4270 bfd_xcoff_swap_ldsym_out (flinfo
->output_bfd
, ldsym
,
4273 * bfd_xcoff_ldsymsz (flinfo
->output_bfd
))));
4276 /* Fill in snentry now that we know the target_index. */
4277 if ((h
->flags
& XCOFF_ENTRY
) != 0
4278 && (h
->root
.type
== bfd_link_hash_defined
4279 || h
->root
.type
== bfd_link_hash_defweak
))
4281 xcoff_data (output_bfd
)->snentry
=
4282 h
->root
.u
.def
.section
->output_section
->target_index
;
4286 add
= 1 + isymp
->n_numaux
;
4288 if (*debug_index
== -2)
4289 /* We've decided to strip this symbol. */
4293 /* Assign the next unused index to this symbol. */
4294 *indexp
= output_index
;
4296 if (EXTERN_SYM_P (isymp
->n_sclass
))
4298 BFD_ASSERT (*sym_hash
!= NULL
);
4299 (*sym_hash
)->indx
= output_index
;
4302 /* If this is a symbol in the TOC which we may have merged
4303 (class XMC_TC), remember the symbol index of the TOC
4305 if (isymp
->n_sclass
== C_HIDEXT
4306 && aux
.x_csect
.x_smclas
== XMC_TC
4307 && *sym_hash
!= NULL
)
4309 BFD_ASSERT (((*sym_hash
)->flags
& XCOFF_SET_TOC
) == 0);
4310 BFD_ASSERT ((*sym_hash
)->toc_section
!= NULL
);
4311 (*sym_hash
)->u
.toc_indx
= output_index
;
4314 output_index
+= add
;
4317 esym
+= add
* isymesz
;
4323 for (--add
; add
> 0; --add
)
4327 /* Now write out the symbols that we decided to keep. */
4329 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4330 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4331 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4332 isymp
= flinfo
->internal_syms
;
4333 indexp
= flinfo
->sym_indices
;
4334 csectpp
= xcoff_data (input_bfd
)->csects
;
4335 lineno_counts
= xcoff_data (input_bfd
)->lineno_counts
;
4336 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4337 outsym
= flinfo
->outsyms
;
4340 while (esym
< esym_end
)
4344 add
= 1 + isymp
->n_numaux
;
4347 esym
+= add
* isymesz
;
4350 struct internal_syment isym
;
4353 /* Adjust the symbol in order to output it. */
4355 if (isym
._n
._n_n
._n_zeroes
== 0
4356 && isym
._n
._n_n
._n_offset
!= 0)
4358 /* This symbol has a long name. Enter it in the string
4359 table we are building. If *debug_index != -1, the
4360 name has already been entered in the .debug section. */
4361 if (*debug_index
>= 0)
4362 isym
._n
._n_n
._n_offset
= *debug_index
;
4368 name
= _bfd_coff_internal_syment_name (input_bfd
, &isym
, NULL
);
4372 indx
= _bfd_stringtab_add (flinfo
->strtab
, name
, hash
, copy
);
4373 if (indx
== (bfd_size_type
) -1)
4375 isym
._n
._n_n
._n_offset
= STRING_SIZE_SIZE
+ indx
;
4379 /* Make __rtinit C_HIDEXT rather than C_EXT. This avoids
4380 multiple definition problems when linking a shared object
4381 statically. (The native linker doesn't enter __rtinit into
4382 the normal table at all, but having a local symbol can make
4383 the objdump output easier to read.) */
4384 if (isym
.n_sclass
== C_EXT
4386 && ((*sym_hash
)->flags
& XCOFF_RTINIT
) != 0)
4387 isym
.n_sclass
= C_HIDEXT
;
4389 /* The value of a C_FILE symbol is the symbol index of the
4390 next C_FILE symbol. The value of the last C_FILE symbol
4391 is -1. We try to get this right, below, just before we
4392 write the symbols out, but in the general case we may
4393 have to write the symbol out twice. */
4394 if (isym
.n_sclass
== C_FILE
)
4396 if (flinfo
->last_file_index
!= -1
4397 && flinfo
->last_file
.n_value
!= (bfd_vma
) *indexp
)
4399 /* We must correct the value of the last C_FILE entry. */
4400 flinfo
->last_file
.n_value
= *indexp
;
4401 if ((bfd_size_type
) flinfo
->last_file_index
>= syment_base
)
4403 /* The last C_FILE symbol is in this input file. */
4404 bfd_coff_swap_sym_out (output_bfd
,
4405 (void *) &flinfo
->last_file
,
4406 (void *) (flinfo
->outsyms
4407 + ((flinfo
->last_file_index
4413 /* We have already written out the last C_FILE
4414 symbol. We need to write it out again. We
4415 borrow *outsym temporarily. */
4418 bfd_coff_swap_sym_out (output_bfd
,
4419 (void *) &flinfo
->last_file
,
4422 pos
= obj_sym_filepos (output_bfd
);
4423 pos
+= flinfo
->last_file_index
* osymesz
;
4424 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4425 || (bfd_bwrite (outsym
, osymesz
, output_bfd
)
4431 flinfo
->last_file_index
= *indexp
;
4432 flinfo
->last_file
= isym
;
4435 /* The value of a C_BINCL or C_EINCL symbol is a file offset
4436 into the line numbers. We update the symbol values when
4437 we handle the line numbers. */
4438 if (isym
.n_sclass
== C_BINCL
4439 || isym
.n_sclass
== C_EINCL
)
4441 isym
.n_value
= flinfo
->line_filepos
;
4444 /* The value of a C_BSTAT symbol is the symbol table
4445 index of the containing csect. */
4446 else if (isym
.n_sclass
== C_BSTAT
)
4450 indx
= isym
.n_value
;
4451 if (indx
< obj_raw_syment_count (input_bfd
))
4455 symindx
= flinfo
->sym_indices
[indx
];
4459 isym
.n_value
= symindx
;
4462 else if (isym
.n_sclass
!= C_ESTAT
4463 && isym
.n_sclass
!= C_DECL
4464 && isym
.n_scnum
> 0)
4466 isym
.n_scnum
= (*csectpp
)->output_section
->target_index
;
4467 isym
.n_value
+= ((*csectpp
)->output_section
->vma
4468 + (*csectpp
)->output_offset
4472 /* Output the symbol. */
4473 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
4478 for (i
= 0; i
< isymp
->n_numaux
&& esym
< esym_end
; i
++)
4480 union internal_auxent aux
;
4482 bfd_coff_swap_aux_in (input_bfd
, (void *) esym
, isymp
->n_type
,
4483 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4486 if (isymp
->n_sclass
== C_FILE
)
4488 /* This is the file name (or some comment put in by
4489 the compiler). If it is long, we must put it in
4490 the string table. */
4491 if (aux
.x_file
.x_n
.x_zeroes
== 0
4492 && aux
.x_file
.x_n
.x_offset
!= 0)
4494 const char *filename
;
4497 BFD_ASSERT (aux
.x_file
.x_n
.x_offset
4498 >= STRING_SIZE_SIZE
);
4499 if (strings
== NULL
)
4501 strings
= _bfd_coff_read_string_table (input_bfd
);
4502 if (strings
== NULL
)
4505 if ((bfd_size_type
) aux
.x_file
.x_n
.x_offset
>= obj_coff_strings_len (input_bfd
))
4506 filename
= _("<corrupt>");
4508 filename
= strings
+ aux
.x_file
.x_n
.x_offset
;
4509 indx
= _bfd_stringtab_add (flinfo
->strtab
, filename
,
4511 if (indx
== (bfd_size_type
) -1)
4513 aux
.x_file
.x_n
.x_offset
= STRING_SIZE_SIZE
+ indx
;
4516 else if (CSECT_SYM_P (isymp
->n_sclass
)
4517 && i
+ 1 == isymp
->n_numaux
)
4520 /* We don't support type checking. I don't know if
4522 aux
.x_csect
.x_parmhash
= 0;
4523 /* I don't think anybody uses these fields, but we'd
4524 better clobber them just in case. */
4525 aux
.x_csect
.x_stab
= 0;
4526 aux
.x_csect
.x_snstab
= 0;
4528 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_LD
)
4532 indx
= aux
.x_csect
.x_scnlen
.l
;
4533 if (indx
< obj_raw_syment_count (input_bfd
))
4537 symindx
= flinfo
->sym_indices
[indx
];
4540 aux
.x_csect
.x_scnlen
.l
= 0;
4544 aux
.x_csect
.x_scnlen
.l
= symindx
;
4549 else if (isymp
->n_sclass
!= C_STAT
|| isymp
->n_type
!= T_NULL
)
4553 if (ISFCN (isymp
->n_type
)
4554 || ISTAG (isymp
->n_sclass
)
4555 || isymp
->n_sclass
== C_BLOCK
4556 || isymp
->n_sclass
== C_FCN
)
4558 indx
= aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
;
4560 && indx
< obj_raw_syment_count (input_bfd
))
4562 /* We look forward through the symbol for
4563 the index of the next symbol we are going
4564 to include. I don't know if this is
4566 while (flinfo
->sym_indices
[indx
] < 0
4567 && indx
< obj_raw_syment_count (input_bfd
))
4569 if (indx
>= obj_raw_syment_count (input_bfd
))
4570 indx
= output_index
;
4572 indx
= flinfo
->sym_indices
[indx
];
4573 aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= indx
;
4578 indx
= aux
.x_sym
.x_tagndx
.l
;
4579 if (indx
> 0 && indx
< obj_raw_syment_count (input_bfd
))
4583 symindx
= flinfo
->sym_indices
[indx
];
4585 aux
.x_sym
.x_tagndx
.l
= 0;
4587 aux
.x_sym
.x_tagndx
.l
= symindx
;
4592 /* Copy over the line numbers, unless we are stripping
4593 them. We do this on a symbol by symbol basis in
4594 order to more easily handle garbage collection. */
4595 if (CSECT_SYM_P (isymp
->n_sclass
)
4597 && isymp
->n_numaux
> 1
4598 && ISFCN (isymp
->n_type
)
4599 && aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
4601 if (*lineno_counts
== 0)
4602 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= 0;
4605 asection
*enclosing
;
4606 unsigned int enc_count
;
4607 bfd_signed_vma linoff
;
4608 struct internal_lineno lin
;
4615 /* Read in the enclosing section's line-number
4616 information, if we haven't already. */
4618 enclosing
= xcoff_section_data (abfd
, o
)->enclosing
;
4619 enc_count
= xcoff_section_data (abfd
, o
)->lineno_count
;
4620 if (oline
!= enclosing
)
4622 pos
= enclosing
->line_filepos
;
4623 amt
= linesz
* enc_count
;
4624 if (bfd_seek (input_bfd
, pos
, SEEK_SET
) != 0
4625 || (bfd_bread (flinfo
->linenos
, amt
, input_bfd
)
4631 /* Copy across the first entry, adjusting its
4633 linoff
= (aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
4634 - enclosing
->line_filepos
);
4635 linp
= flinfo
->linenos
+ linoff
;
4636 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4637 lin
.l_addr
.l_symndx
= *indexp
;
4638 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4640 /* Copy the other entries, adjusting their addresses. */
4641 linpend
= linp
+ *lineno_counts
* linesz
;
4642 offset
= (o
->output_section
->vma
4645 for (linp
+= linesz
; linp
< linpend
; linp
+= linesz
)
4647 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4648 lin
.l_addr
.l_paddr
+= offset
;
4649 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4652 /* Write out the entries we've just processed. */
4653 pos
= (o
->output_section
->line_filepos
4654 + o
->output_section
->lineno_count
* linesz
);
4655 amt
= linesz
* *lineno_counts
;
4656 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4657 || bfd_bwrite (flinfo
->linenos
+ linoff
,
4658 amt
, output_bfd
) != amt
)
4660 o
->output_section
->lineno_count
+= *lineno_counts
;
4662 /* Record the offset of the symbol's line numbers
4663 in the output file. */
4664 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= pos
;
4668 struct internal_syment
*iisp
, *iispend
;
4671 bfd_vma range_start
, range_end
;
4674 /* Update any C_BINCL or C_EINCL symbols
4675 that refer to a line number in the
4676 range we just output. */
4677 iisp
= flinfo
->internal_syms
;
4678 iispend
= iisp
+ obj_raw_syment_count (input_bfd
);
4679 iindp
= flinfo
->sym_indices
;
4680 oos
= flinfo
->outsyms
;
4681 range_start
= enclosing
->line_filepos
+ linoff
;
4682 range_end
= range_start
+ *lineno_counts
* linesz
;
4683 while (iisp
< iispend
)
4686 && (iisp
->n_sclass
== C_BINCL
4687 || iisp
->n_sclass
== C_EINCL
)
4688 && iisp
->n_value
>= range_start
4689 && iisp
->n_value
< range_end
)
4691 struct internal_syment iis
;
4693 bfd_coff_swap_sym_in (output_bfd
, oos
, &iis
);
4694 iis
.n_value
= (iisp
->n_value
4697 bfd_coff_swap_sym_out (output_bfd
,
4702 iiadd
= 1 + iisp
->n_numaux
;
4704 oos
+= iiadd
* osymesz
;
4712 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, isymp
->n_type
,
4713 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4724 lineno_counts
+= add
;
4728 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
4729 symbol will be the first symbol in the next input file. In the
4730 normal case, this will save us from writing out the C_FILE symbol
4732 if (flinfo
->last_file_index
!= -1
4733 && (bfd_size_type
) flinfo
->last_file_index
>= syment_base
)
4735 flinfo
->last_file
.n_value
= output_index
;
4736 bfd_coff_swap_sym_out (output_bfd
, (void *) &flinfo
->last_file
,
4737 (void *) (flinfo
->outsyms
4738 + ((flinfo
->last_file_index
- syment_base
)
4742 /* Write the modified symbols to the output file. */
4743 if (outsym
> flinfo
->outsyms
)
4745 file_ptr pos
= obj_sym_filepos (output_bfd
) + syment_base
* osymesz
;
4746 bfd_size_type amt
= outsym
- flinfo
->outsyms
;
4747 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4748 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
4751 BFD_ASSERT ((obj_raw_syment_count (output_bfd
)
4752 + (outsym
- flinfo
->outsyms
) / osymesz
)
4755 obj_raw_syment_count (output_bfd
) = output_index
;
4758 /* Don't let the linker relocation routines discard the symbols. */
4759 keep_syms
= obj_coff_keep_syms (input_bfd
);
4760 obj_coff_keep_syms (input_bfd
) = TRUE
;
4762 /* Relocate the contents of each section. */
4763 for (o
= input_bfd
->sections
; o
!= NULL
; o
= o
->next
)
4767 if (! o
->linker_mark
)
4768 /* This section was omitted from the link. */
4771 if ((o
->flags
& SEC_HAS_CONTENTS
) == 0
4773 || (o
->flags
& SEC_IN_MEMORY
) != 0)
4776 /* We have set filepos correctly for the sections we created to
4777 represent csects, so bfd_get_section_contents should work. */
4778 if (coff_section_data (input_bfd
, o
) != NULL
4779 && coff_section_data (input_bfd
, o
)->contents
!= NULL
)
4780 contents
= coff_section_data (input_bfd
, o
)->contents
;
4783 bfd_size_type sz
= o
->rawsize
? o
->rawsize
: o
->size
;
4784 if (!bfd_get_section_contents (input_bfd
, o
, flinfo
->contents
, 0, sz
))
4786 contents
= flinfo
->contents
;
4789 if ((o
->flags
& SEC_RELOC
) != 0)
4792 struct internal_reloc
*internal_relocs
;
4793 struct internal_reloc
*irel
;
4795 struct internal_reloc
*irelend
;
4796 struct xcoff_link_hash_entry
**rel_hash
;
4799 /* Read in the relocs. */
4800 target_index
= o
->output_section
->target_index
;
4801 internal_relocs
= (xcoff_read_internal_relocs
4802 (input_bfd
, o
, FALSE
, flinfo
->external_relocs
,
4804 (flinfo
->section_info
[target_index
].relocs
4805 + o
->output_section
->reloc_count
)));
4806 if (internal_relocs
== NULL
)
4809 /* Call processor specific code to relocate the section
4811 if (! bfd_coff_relocate_section (output_bfd
, flinfo
->info
,
4815 flinfo
->internal_syms
,
4816 xcoff_data (input_bfd
)->csects
))
4819 offset
= o
->output_section
->vma
+ o
->output_offset
- o
->vma
;
4820 irel
= internal_relocs
;
4821 irelend
= irel
+ o
->reloc_count
;
4822 rel_hash
= (flinfo
->section_info
[target_index
].rel_hashes
4823 + o
->output_section
->reloc_count
);
4824 for (; irel
< irelend
; irel
++, rel_hash
++)
4826 struct xcoff_link_hash_entry
*h
= NULL
;
4830 /* Adjust the reloc address and symbol index. */
4832 irel
->r_vaddr
+= offset
;
4834 r_symndx
= irel
->r_symndx
;
4839 h
= obj_xcoff_sym_hashes (input_bfd
)[r_symndx
];
4841 if (r_symndx
!= -1 && flinfo
->info
->strip
!= strip_all
)
4844 && h
->smclas
!= XMC_TD
4845 && (irel
->r_type
== R_TOC
4846 || irel
->r_type
== R_GL
4847 || irel
->r_type
== R_TCL
4848 || irel
->r_type
== R_TRL
4849 || irel
->r_type
== R_TRLA
))
4851 /* This is a TOC relative reloc with a symbol
4852 attached. The symbol should be the one which
4853 this reloc is for. We want to make this
4854 reloc against the TOC address of the symbol,
4855 not the symbol itself. */
4856 BFD_ASSERT (h
->toc_section
!= NULL
);
4857 BFD_ASSERT ((h
->flags
& XCOFF_SET_TOC
) == 0);
4858 if (h
->u
.toc_indx
!= -1)
4859 irel
->r_symndx
= h
->u
.toc_indx
;
4862 struct xcoff_toc_rel_hash
*n
;
4863 struct xcoff_link_section_info
*si
;
4867 n
= bfd_alloc (flinfo
->output_bfd
, amt
);
4870 si
= flinfo
->section_info
+ target_index
;
4871 n
->next
= si
->toc_rel_hashes
;
4874 si
->toc_rel_hashes
= n
;
4879 /* This is a global symbol. */
4881 irel
->r_symndx
= h
->indx
;
4884 /* This symbol is being written at the end
4885 of the file, and we do not yet know the
4886 symbol index. We save the pointer to the
4887 hash table entry in the rel_hash list.
4888 We set the indx field to -2 to indicate
4889 that this symbol must not be stripped. */
4898 indx
= flinfo
->sym_indices
[r_symndx
];
4902 struct internal_syment
*is
;
4904 /* Relocations against a TC0 TOC anchor are
4905 automatically transformed to be against
4906 the TOC anchor in the output file. */
4907 is
= flinfo
->internal_syms
+ r_symndx
;
4908 if (is
->n_sclass
== C_HIDEXT
4909 && is
->n_numaux
> 0)
4912 union internal_auxent aux
;
4916 obj_coff_external_syms (input_bfd
))
4917 + ((r_symndx
+ is
->n_numaux
)
4919 bfd_coff_swap_aux_in (input_bfd
, auxptr
,
4920 is
->n_type
, is
->n_sclass
,
4924 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_SD
4925 && aux
.x_csect
.x_smclas
== XMC_TC0
)
4926 indx
= flinfo
->toc_symindx
;
4931 irel
->r_symndx
= indx
;
4935 struct internal_syment
*is
;
4938 char buf
[SYMNMLEN
+ 1];
4940 /* This reloc is against a symbol we are
4941 stripping. It would be possible to handle
4942 this case, but I don't think it's worth it. */
4943 is
= flinfo
->internal_syms
+ r_symndx
;
4945 if (is
->n_sclass
!= C_DWARF
)
4947 name
= (_bfd_coff_internal_syment_name
4948 (input_bfd
, is
, buf
));
4953 (*flinfo
->info
->callbacks
->unattached_reloc
)
4954 (flinfo
->info
, name
,
4955 input_bfd
, o
, irel
->r_vaddr
);
4961 if ((o
->flags
& SEC_DEBUGGING
) == 0
4962 && xcoff_need_ldrel_p (flinfo
->info
, irel
, h
))
4969 sec
= xcoff_data (input_bfd
)->csects
[r_symndx
];
4971 sec
= xcoff_symbol_section (h
);
4972 if (!xcoff_create_ldrel (output_bfd
, flinfo
,
4973 o
->output_section
, input_bfd
,
4979 o
->output_section
->reloc_count
+= o
->reloc_count
;
4982 /* Write out the modified section contents. */
4983 if (! bfd_set_section_contents (output_bfd
, o
->output_section
,
4984 contents
, (file_ptr
) o
->output_offset
,
4989 obj_coff_keep_syms (input_bfd
) = keep_syms
;
4991 if (! flinfo
->info
->keep_memory
)
4993 if (! _bfd_coff_free_symbols (input_bfd
))
5000 obj_coff_keep_syms (input_bfd
) = keep_syms
;
5007 /* Sort relocs by VMA. This is called via qsort. */
5010 xcoff_sort_relocs (const void * p1
, const void * p2
)
5012 const struct internal_reloc
*r1
= (const struct internal_reloc
*) p1
;
5013 const struct internal_reloc
*r2
= (const struct internal_reloc
*) p2
;
5015 if (r1
->r_vaddr
> r2
->r_vaddr
)
5017 else if (r1
->r_vaddr
< r2
->r_vaddr
)
5023 /* Return true if section SEC is a TOC section. */
5025 static inline bfd_boolean
5026 xcoff_toc_section_p (asection
*sec
)
5031 if (name
[0] == '.' && name
[1] == 't')
5035 if (name
[3] == '0' && name
[4] == 0)
5040 if (name
[2] == 'd' && name
[3] == 0)
5046 /* See if the link requires a TOC (it usually does!). If so, find a
5047 good place to put the TOC anchor csect, and write out the associated
5051 xcoff_find_tc0 (bfd
*output_bfd
, struct xcoff_final_link_info
*flinfo
)
5053 bfd_vma toc_start
, toc_end
, start
, end
, best_address
;
5057 struct internal_syment irsym
;
5058 union internal_auxent iraux
;
5062 /* Set [TOC_START, TOC_END) to the range of the TOC. Record the
5063 index of a csect at the beginning of the TOC. */
5064 toc_start
= ~(bfd_vma
) 0;
5067 for (input_bfd
= flinfo
->info
->input_bfds
;
5069 input_bfd
= input_bfd
->link
.next
)
5070 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5071 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5073 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5074 if (toc_start
> start
)
5077 section_index
= sec
->output_section
->target_index
;
5080 end
= start
+ sec
->size
;
5085 /* There's no need for a TC0 symbol if we don't have a TOC. */
5086 if (toc_end
< toc_start
)
5088 xcoff_data (output_bfd
)->toc
= toc_start
;
5092 if (toc_end
- toc_start
< 0x8000)
5093 /* Every TOC csect can be accessed from TOC_START. */
5094 best_address
= toc_start
;
5097 /* Find the lowest TOC csect that is still within range of TOC_END. */
5098 best_address
= toc_end
;
5099 for (input_bfd
= flinfo
->info
->input_bfds
;
5101 input_bfd
= input_bfd
->link
.next
)
5102 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5103 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5105 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5106 if (start
< best_address
5107 && start
+ 0x8000 >= toc_end
)
5109 best_address
= start
;
5110 section_index
= sec
->output_section
->target_index
;
5114 /* Make sure that the start of the TOC is also within range. */
5115 if (best_address
> toc_start
+ 0x8000)
5118 (_("TOC overflow: %#" PRIx64
" > 0x10000; try -mminimal-toc "
5120 (uint64_t) (toc_end
- toc_start
));
5121 bfd_set_error (bfd_error_file_too_big
);
5126 /* Record the chosen TOC value. */
5127 flinfo
->toc_symindx
= obj_raw_syment_count (output_bfd
);
5128 xcoff_data (output_bfd
)->toc
= best_address
;
5129 xcoff_data (output_bfd
)->sntoc
= section_index
;
5131 /* Fill out the TC0 symbol. */
5132 if (!bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
, flinfo
->strtab
,
5135 irsym
.n_value
= best_address
;
5136 irsym
.n_scnum
= section_index
;
5137 irsym
.n_sclass
= C_HIDEXT
;
5138 irsym
.n_type
= T_NULL
;
5140 bfd_coff_swap_sym_out (output_bfd
, &irsym
, flinfo
->outsyms
);
5142 /* Fill out the auxillary csect information. */
5143 memset (&iraux
, 0, sizeof iraux
);
5144 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5145 iraux
.x_csect
.x_smclas
= XMC_TC0
;
5146 iraux
.x_csect
.x_scnlen
.l
= 0;
5147 bfd_coff_swap_aux_out (output_bfd
, &iraux
, T_NULL
, C_HIDEXT
, 0, 1,
5148 flinfo
->outsyms
+ bfd_coff_symesz (output_bfd
));
5150 /* Write the contents to the file. */
5151 pos
= obj_sym_filepos (output_bfd
);
5152 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5153 size
= 2 * bfd_coff_symesz (output_bfd
);
5154 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5155 || bfd_bwrite (flinfo
->outsyms
, size
, output_bfd
) != size
)
5157 obj_raw_syment_count (output_bfd
) += 2;
5162 /* Write out a non-XCOFF global symbol. */
5165 xcoff_write_global_symbol (struct bfd_hash_entry
*bh
, void * inf
)
5167 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) bh
;
5168 struct xcoff_final_link_info
*flinfo
= (struct xcoff_final_link_info
*) inf
;
5171 struct internal_syment isym
;
5172 union internal_auxent aux
;
5177 output_bfd
= flinfo
->output_bfd
;
5178 outsym
= flinfo
->outsyms
;
5180 if (h
->root
.type
== bfd_link_hash_warning
)
5182 h
= (struct xcoff_link_hash_entry
*) h
->root
.u
.i
.link
;
5183 if (h
->root
.type
== bfd_link_hash_new
)
5187 /* If this symbol was garbage collected, just skip it. */
5188 if (xcoff_hash_table (flinfo
->info
)->gc
5189 && (h
->flags
& XCOFF_MARK
) == 0)
5192 /* If we need a .loader section entry, write it out. */
5193 if (h
->ldsym
!= NULL
)
5195 struct internal_ldsym
*ldsym
;
5200 if (h
->root
.type
== bfd_link_hash_undefined
5201 || h
->root
.type
== bfd_link_hash_undefweak
)
5205 ldsym
->l_scnum
= N_UNDEF
;
5206 ldsym
->l_smtype
= XTY_ER
;
5207 impbfd
= h
->root
.u
.undef
.abfd
;
5210 else if (h
->root
.type
== bfd_link_hash_defined
5211 || h
->root
.type
== bfd_link_hash_defweak
)
5215 sec
= h
->root
.u
.def
.section
;
5216 ldsym
->l_value
= (sec
->output_section
->vma
5217 + sec
->output_offset
5218 + h
->root
.u
.def
.value
);
5219 ldsym
->l_scnum
= sec
->output_section
->target_index
;
5220 ldsym
->l_smtype
= XTY_SD
;
5221 impbfd
= sec
->owner
;
5227 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
5228 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5229 || (h
->flags
& XCOFF_IMPORT
) != 0)
5231 Import symbols are defined so the check above will make
5232 the l_smtype XTY_SD. But this is not correct, it should
5234 ldsym
->l_smtype
|= L_IMPORT
;
5236 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
5237 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5238 || (h
->flags
& XCOFF_EXPORT
) != 0)
5239 ldsym
->l_smtype
|= L_EXPORT
;
5241 if ((h
->flags
& XCOFF_ENTRY
) != 0)
5242 ldsym
->l_smtype
|= L_ENTRY
;
5244 if ((h
->flags
& XCOFF_RTINIT
) != 0)
5245 ldsym
->l_smtype
= XTY_SD
;
5247 ldsym
->l_smclas
= h
->smclas
;
5249 if (ldsym
->l_smtype
& L_IMPORT
)
5251 if ((h
->root
.type
== bfd_link_hash_defined
5252 || h
->root
.type
== bfd_link_hash_defweak
)
5253 && (h
->root
.u
.def
.value
!= 0))
5254 ldsym
->l_smclas
= XMC_XO
;
5256 else if ((h
->flags
& (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
)) ==
5257 (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
))
5258 ldsym
->l_smclas
= XMC_SV3264
;
5260 else if (h
->flags
& XCOFF_SYSCALL32
)
5261 ldsym
->l_smclas
= XMC_SV
;
5263 else if (h
->flags
& XCOFF_SYSCALL64
)
5264 ldsym
->l_smclas
= XMC_SV64
;
5267 if (ldsym
->l_ifile
== -(bfd_size_type
) 1)
5271 else if (ldsym
->l_ifile
== 0)
5273 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
5275 else if (impbfd
== NULL
)
5279 BFD_ASSERT (impbfd
->xvec
== output_bfd
->xvec
);
5280 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
5286 BFD_ASSERT (h
->ldindx
>= 0);
5288 bfd_xcoff_swap_ldsym_out (output_bfd
, ldsym
,
5291 * bfd_xcoff_ldsymsz(flinfo
->output_bfd
)));
5295 /* If this symbol needs global linkage code, write it out. */
5296 if (h
->root
.type
== bfd_link_hash_defined
5297 && (h
->root
.u
.def
.section
5298 == xcoff_hash_table (flinfo
->info
)->linkage_section
))
5304 p
= h
->root
.u
.def
.section
->contents
+ h
->root
.u
.def
.value
;
5306 /* The first instruction in the global linkage code loads a
5307 specific TOC element. */
5308 tocoff
= (h
->descriptor
->toc_section
->output_section
->vma
5309 + h
->descriptor
->toc_section
->output_offset
5310 - xcoff_data (output_bfd
)->toc
);
5312 if ((h
->descriptor
->flags
& XCOFF_SET_TOC
) != 0)
5313 tocoff
+= h
->descriptor
->u
.toc_offset
;
5315 /* The first instruction in the glink code needs to be
5316 cooked to hold the correct offset in the toc. The
5317 rest are just output raw. */
5318 bfd_put_32 (output_bfd
,
5319 bfd_xcoff_glink_code(output_bfd
, 0) | (tocoff
& 0xffff), p
);
5321 /* Start with i == 1 to get past the first instruction done above
5322 The /4 is because the glink code is in bytes and we are going
5324 for (i
= 1; i
< bfd_xcoff_glink_code_size(output_bfd
) / 4; i
++)
5325 bfd_put_32 (output_bfd
,
5326 (bfd_vma
) bfd_xcoff_glink_code(output_bfd
, i
),
5330 /* If we created a TOC entry for this symbol, write out the required
5332 if ((h
->flags
& XCOFF_SET_TOC
) != 0)
5337 struct internal_reloc
*irel
;
5338 struct internal_syment irsym
;
5339 union internal_auxent iraux
;
5341 tocsec
= h
->toc_section
;
5342 osec
= tocsec
->output_section
;
5343 oindx
= osec
->target_index
;
5344 irel
= flinfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5345 irel
->r_vaddr
= (osec
->vma
5346 + tocsec
->output_offset
5350 irel
->r_symndx
= h
->indx
;
5354 irel
->r_symndx
= obj_raw_syment_count (output_bfd
);
5357 BFD_ASSERT (h
->ldindx
>= 0);
5359 /* Initialize the aux union here instead of closer to when it is
5360 written out below because the length of the csect depends on
5361 whether the output is 32 or 64 bit. */
5362 memset (&iraux
, 0, sizeof iraux
);
5363 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5364 /* iraux.x_csect.x_scnlen.l = 4 or 8, see below. */
5365 iraux
.x_csect
.x_smclas
= XMC_TC
;
5367 /* 32 bit uses a 32 bit R_POS to do the relocations
5368 64 bit uses a 64 bit R_POS to do the relocations
5370 Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit
5372 Which one is determined by the backend. */
5373 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5376 iraux
.x_csect
.x_scnlen
.l
= 8;
5378 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5381 iraux
.x_csect
.x_scnlen
.l
= 4;
5386 irel
->r_type
= R_POS
;
5387 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5388 ++osec
->reloc_count
;
5390 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5391 output_bfd
, irel
, NULL
, h
))
5394 /* We need to emit a symbol to define a csect which holds
5396 if (flinfo
->info
->strip
!= strip_all
)
5398 result
= bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
,
5400 &irsym
, h
->root
.root
.string
);
5404 irsym
.n_value
= irel
->r_vaddr
;
5405 irsym
.n_scnum
= osec
->target_index
;
5406 irsym
.n_sclass
= C_HIDEXT
;
5407 irsym
.n_type
= T_NULL
;
5410 bfd_coff_swap_sym_out (output_bfd
, (void *) &irsym
, (void *) outsym
);
5411 outsym
+= bfd_coff_symesz (output_bfd
);
5413 /* Note : iraux is initialized above. */
5414 bfd_coff_swap_aux_out (output_bfd
, (void *) &iraux
, T_NULL
, C_HIDEXT
,
5415 0, 1, (void *) outsym
);
5416 outsym
+= bfd_coff_auxesz (output_bfd
);
5420 /* We aren't going to write out the symbols below, so we
5421 need to write them out now. */
5422 pos
= obj_sym_filepos (output_bfd
);
5423 pos
+= (obj_raw_syment_count (output_bfd
)
5424 * bfd_coff_symesz (output_bfd
));
5425 amt
= outsym
- flinfo
->outsyms
;
5426 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5427 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
5429 obj_raw_syment_count (output_bfd
) +=
5430 (outsym
- flinfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5432 outsym
= flinfo
->outsyms
;
5437 /* If this symbol is a specially defined function descriptor, write
5438 it out. The first word is the address of the function code
5439 itself, the second word is the address of the TOC, and the third
5443 The addresses for the 32 bit will take 4 bytes and the addresses
5444 for 64 bit will take 8 bytes. Similar for the relocs. This type
5445 of logic was also done above to create a TOC entry in
5446 xcoff_write_global_symbol. */
5447 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
5448 && h
->root
.type
== bfd_link_hash_defined
5449 && (h
->root
.u
.def
.section
5450 == xcoff_hash_table (flinfo
->info
)->descriptor_section
))
5456 struct xcoff_link_hash_entry
*hentry
;
5458 struct internal_reloc
*irel
;
5460 unsigned int reloc_size
, byte_size
;
5462 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5467 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5475 sec
= h
->root
.u
.def
.section
;
5476 osec
= sec
->output_section
;
5477 oindx
= osec
->target_index
;
5478 p
= sec
->contents
+ h
->root
.u
.def
.value
;
5480 hentry
= h
->descriptor
;
5481 BFD_ASSERT (hentry
!= NULL
5482 && (hentry
->root
.type
== bfd_link_hash_defined
5483 || hentry
->root
.type
== bfd_link_hash_defweak
));
5484 esec
= hentry
->root
.u
.def
.section
;
5486 irel
= flinfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5487 irel
->r_vaddr
= (osec
->vma
5488 + sec
->output_offset
5489 + h
->root
.u
.def
.value
);
5490 irel
->r_symndx
= esec
->output_section
->target_index
;
5491 irel
->r_type
= R_POS
;
5492 irel
->r_size
= reloc_size
;
5493 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5494 ++osec
->reloc_count
;
5496 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5497 output_bfd
, irel
, esec
, NULL
))
5500 /* There are three items to write out,
5501 the address of the code
5502 the address of the toc anchor
5503 the environment pointer.
5504 We are ignoring the environment pointer. So set it to zero. */
5505 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5507 bfd_put_64 (output_bfd
,
5508 (esec
->output_section
->vma
+ esec
->output_offset
5509 + hentry
->root
.u
.def
.value
),
5511 bfd_put_64 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 8);
5512 bfd_put_64 (output_bfd
, (bfd_vma
) 0, p
+ 16);
5517 This logic was already called above so the error case where
5518 the backend is neither has already been checked. */
5519 bfd_put_32 (output_bfd
,
5520 (esec
->output_section
->vma
+ esec
->output_offset
5521 + hentry
->root
.u
.def
.value
),
5523 bfd_put_32 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 4);
5524 bfd_put_32 (output_bfd
, (bfd_vma
) 0, p
+ 8);
5527 tsec
= coff_section_from_bfd_index (output_bfd
,
5528 xcoff_data (output_bfd
)->sntoc
);
5531 irel
->r_vaddr
= (osec
->vma
5532 + sec
->output_offset
5533 + h
->root
.u
.def
.value
5535 irel
->r_symndx
= tsec
->output_section
->target_index
;
5536 irel
->r_type
= R_POS
;
5537 irel
->r_size
= reloc_size
;
5538 flinfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5539 ++osec
->reloc_count
;
5541 if (!xcoff_create_ldrel (output_bfd
, flinfo
, osec
,
5542 output_bfd
, irel
, tsec
, NULL
))
5546 if (h
->indx
>= 0 || flinfo
->info
->strip
== strip_all
)
5548 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5553 && (flinfo
->info
->strip
== strip_all
5554 || (flinfo
->info
->strip
== strip_some
5555 && bfd_hash_lookup (flinfo
->info
->keep_hash
, h
->root
.root
.string
,
5556 FALSE
, FALSE
) == NULL
)))
5558 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5563 && (h
->flags
& (XCOFF_REF_REGULAR
| XCOFF_DEF_REGULAR
)) == 0)
5565 BFD_ASSERT (outsym
== flinfo
->outsyms
);
5569 memset (&aux
, 0, sizeof aux
);
5571 h
->indx
= obj_raw_syment_count (output_bfd
);
5573 result
= bfd_xcoff_put_symbol_name (output_bfd
, flinfo
->info
, flinfo
->strtab
,
5574 &isym
, h
->root
.root
.string
);
5578 if (h
->root
.type
== bfd_link_hash_undefined
5579 || h
->root
.type
== bfd_link_hash_undefweak
)
5582 isym
.n_scnum
= N_UNDEF
;
5583 if (h
->root
.type
== bfd_link_hash_undefweak
5584 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5585 isym
.n_sclass
= C_WEAKEXT
;
5587 isym
.n_sclass
= C_EXT
;
5588 aux
.x_csect
.x_smtyp
= XTY_ER
;
5590 else if ((h
->root
.type
== bfd_link_hash_defined
5591 || h
->root
.type
== bfd_link_hash_defweak
)
5592 && h
->smclas
== XMC_XO
)
5594 BFD_ASSERT (bfd_is_abs_symbol (&h
->root
));
5595 isym
.n_value
= h
->root
.u
.def
.value
;
5596 isym
.n_scnum
= N_UNDEF
;
5597 if (h
->root
.type
== bfd_link_hash_defweak
5598 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5599 isym
.n_sclass
= C_WEAKEXT
;
5601 isym
.n_sclass
= C_EXT
;
5602 aux
.x_csect
.x_smtyp
= XTY_ER
;
5604 else if (h
->root
.type
== bfd_link_hash_defined
5605 || h
->root
.type
== bfd_link_hash_defweak
)
5607 struct xcoff_link_size_list
*l
;
5609 isym
.n_value
= (h
->root
.u
.def
.section
->output_section
->vma
5610 + h
->root
.u
.def
.section
->output_offset
5611 + h
->root
.u
.def
.value
);
5612 if (bfd_is_abs_section (h
->root
.u
.def
.section
->output_section
))
5613 isym
.n_scnum
= N_ABS
;
5615 isym
.n_scnum
= h
->root
.u
.def
.section
->output_section
->target_index
;
5616 isym
.n_sclass
= C_HIDEXT
;
5617 aux
.x_csect
.x_smtyp
= XTY_SD
;
5619 if ((h
->flags
& XCOFF_HAS_SIZE
) != 0)
5621 for (l
= xcoff_hash_table (flinfo
->info
)->size_list
;
5627 aux
.x_csect
.x_scnlen
.l
= l
->size
;
5633 else if (h
->root
.type
== bfd_link_hash_common
)
5635 isym
.n_value
= (h
->root
.u
.c
.p
->section
->output_section
->vma
5636 + h
->root
.u
.c
.p
->section
->output_offset
);
5637 isym
.n_scnum
= h
->root
.u
.c
.p
->section
->output_section
->target_index
;
5638 isym
.n_sclass
= C_EXT
;
5639 aux
.x_csect
.x_smtyp
= XTY_CM
;
5640 aux
.x_csect
.x_scnlen
.l
= h
->root
.u
.c
.size
;
5645 isym
.n_type
= T_NULL
;
5648 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5649 outsym
+= bfd_coff_symesz (output_bfd
);
5651 aux
.x_csect
.x_smclas
= h
->smclas
;
5652 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, isym
.n_sclass
, 0, 1,
5654 outsym
+= bfd_coff_auxesz (output_bfd
);
5656 if ((h
->root
.type
== bfd_link_hash_defined
5657 || h
->root
.type
== bfd_link_hash_defweak
)
5658 && h
->smclas
!= XMC_XO
)
5660 /* We just output an SD symbol. Now output an LD symbol. */
5663 if (h
->root
.type
== bfd_link_hash_defweak
5664 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5665 isym
.n_sclass
= C_WEAKEXT
;
5667 isym
.n_sclass
= C_EXT
;
5668 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5669 outsym
+= bfd_coff_symesz (output_bfd
);
5671 aux
.x_csect
.x_smtyp
= XTY_LD
;
5672 aux
.x_csect
.x_scnlen
.l
= obj_raw_syment_count (output_bfd
);
5673 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, C_EXT
, 0, 1,
5675 outsym
+= bfd_coff_auxesz (output_bfd
);
5678 pos
= obj_sym_filepos (output_bfd
);
5679 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5680 amt
= outsym
- flinfo
->outsyms
;
5681 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5682 || bfd_bwrite (flinfo
->outsyms
, amt
, output_bfd
) != amt
)
5684 obj_raw_syment_count (output_bfd
) +=
5685 (outsym
- flinfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5690 /* Handle a link order which is supposed to generate a reloc. */
5693 xcoff_reloc_link_order (bfd
*output_bfd
,
5694 struct xcoff_final_link_info
*flinfo
,
5695 asection
*output_section
,
5696 struct bfd_link_order
*link_order
)
5698 reloc_howto_type
*howto
;
5699 struct xcoff_link_hash_entry
*h
;
5703 struct internal_reloc
*irel
;
5704 struct xcoff_link_hash_entry
**rel_hash_ptr
;
5706 if (link_order
->type
== bfd_section_reloc_link_order
)
5707 /* We need to somehow locate a symbol in the right section. The
5708 symbol must either have a value of zero, or we must adjust
5709 the addend by the value of the symbol. FIXME: Write this
5710 when we need it. The old linker couldn't handle this anyhow. */
5713 howto
= bfd_reloc_type_lookup (output_bfd
, link_order
->u
.reloc
.p
->reloc
);
5716 bfd_set_error (bfd_error_bad_value
);
5720 h
= ((struct xcoff_link_hash_entry
*)
5721 bfd_wrapped_link_hash_lookup (output_bfd
, flinfo
->info
,
5722 link_order
->u
.reloc
.p
->u
.name
,
5723 FALSE
, FALSE
, TRUE
));
5726 (*flinfo
->info
->callbacks
->unattached_reloc
)
5727 (flinfo
->info
, link_order
->u
.reloc
.p
->u
.name
, NULL
, NULL
, (bfd_vma
) 0);
5731 hsec
= xcoff_symbol_section (h
);
5732 if (h
->root
.type
== bfd_link_hash_defined
5733 || h
->root
.type
== bfd_link_hash_defweak
)
5734 hval
= h
->root
.u
.def
.value
;
5738 addend
= link_order
->u
.reloc
.p
->addend
;
5740 addend
+= (hsec
->output_section
->vma
5741 + hsec
->output_offset
5748 bfd_reloc_status_type rstat
;
5751 size
= bfd_get_reloc_size (howto
);
5752 buf
= bfd_zmalloc (size
);
5753 if (buf
== NULL
&& size
!= 0)
5756 rstat
= _bfd_relocate_contents (howto
, output_bfd
, addend
, buf
);
5762 case bfd_reloc_outofrange
:
5764 case bfd_reloc_overflow
:
5765 (*flinfo
->info
->callbacks
->reloc_overflow
)
5766 (flinfo
->info
, NULL
, link_order
->u
.reloc
.p
->u
.name
,
5767 howto
->name
, addend
, NULL
, NULL
, (bfd_vma
) 0);
5770 ok
= bfd_set_section_contents (output_bfd
, output_section
, (void *) buf
,
5771 (file_ptr
) link_order
->offset
, size
);
5777 /* Store the reloc information in the right place. It will get
5778 swapped and written out at the end of the final_link routine. */
5779 irel
= (flinfo
->section_info
[output_section
->target_index
].relocs
5780 + output_section
->reloc_count
);
5781 rel_hash_ptr
= (flinfo
->section_info
[output_section
->target_index
].rel_hashes
5782 + output_section
->reloc_count
);
5784 memset (irel
, 0, sizeof (struct internal_reloc
));
5785 *rel_hash_ptr
= NULL
;
5787 irel
->r_vaddr
= output_section
->vma
+ link_order
->offset
;
5790 irel
->r_symndx
= h
->indx
;
5793 /* Set the index to -2 to force this symbol to get written out. */
5799 irel
->r_type
= howto
->type
;
5800 irel
->r_size
= howto
->bitsize
- 1;
5801 if (howto
->complain_on_overflow
== complain_overflow_signed
)
5802 irel
->r_size
|= 0x80;
5804 ++output_section
->reloc_count
;
5806 /* Now output the reloc to the .loader section. */
5807 if (xcoff_hash_table (flinfo
->info
)->loader_section
)
5809 if (!xcoff_create_ldrel (output_bfd
, flinfo
, output_section
,
5810 output_bfd
, irel
, hsec
, h
))
5817 /* Do the final link step. */
5820 _bfd_xcoff_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5822 bfd_size_type symesz
;
5823 struct xcoff_final_link_info flinfo
;
5825 struct bfd_link_order
*p
;
5826 bfd_size_type max_contents_size
;
5827 bfd_size_type max_sym_count
;
5828 bfd_size_type max_lineno_count
;
5829 bfd_size_type max_reloc_count
;
5830 bfd_size_type max_output_reloc_count
;
5831 file_ptr rel_filepos
;
5833 file_ptr line_filepos
;
5834 unsigned int linesz
;
5836 bfd_byte
*external_relocs
= NULL
;
5837 char strbuf
[STRING_SIZE_SIZE
];
5841 if (bfd_link_pic (info
))
5842 abfd
->flags
|= DYNAMIC
;
5844 symesz
= bfd_coff_symesz (abfd
);
5847 flinfo
.output_bfd
= abfd
;
5848 flinfo
.strtab
= NULL
;
5849 flinfo
.section_info
= NULL
;
5850 flinfo
.last_file_index
= -1;
5851 flinfo
.toc_symindx
= -1;
5852 flinfo
.internal_syms
= NULL
;
5853 flinfo
.sym_indices
= NULL
;
5854 flinfo
.outsyms
= NULL
;
5855 flinfo
.linenos
= NULL
;
5856 flinfo
.contents
= NULL
;
5857 flinfo
.external_relocs
= NULL
;
5859 if (xcoff_hash_table (info
)->loader_section
)
5861 flinfo
.ldsym
= (xcoff_hash_table (info
)->loader_section
->contents
5862 + bfd_xcoff_ldhdrsz (abfd
));
5863 flinfo
.ldrel
= (xcoff_hash_table (info
)->loader_section
->contents
5864 + bfd_xcoff_ldhdrsz (abfd
)
5865 + (xcoff_hash_table (info
)->ldhdr
.l_nsyms
5866 * bfd_xcoff_ldsymsz (abfd
)));
5870 flinfo
.ldsym
= NULL
;
5871 flinfo
.ldrel
= NULL
;
5874 xcoff_data (abfd
)->coff
.link_info
= info
;
5876 flinfo
.strtab
= _bfd_stringtab_init ();
5877 if (flinfo
.strtab
== NULL
)
5880 /* Count the relocation entries required for the output file.
5881 (We've already counted the line numbers.) Determine a few
5883 max_contents_size
= 0;
5884 max_lineno_count
= 0;
5885 max_reloc_count
= 0;
5886 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5889 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5891 if (p
->type
== bfd_indirect_link_order
)
5895 sec
= p
->u
.indirect
.section
;
5897 /* Mark all sections which are to be included in the
5898 link. This will normally be every section. We need
5899 to do this so that we can identify any sections which
5900 the linker has decided to not include. */
5901 sec
->linker_mark
= TRUE
;
5903 o
->reloc_count
+= sec
->reloc_count
;
5905 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
5907 if (sec
->rawsize
> max_contents_size
)
5908 max_contents_size
= sec
->rawsize
;
5909 if (sec
->size
> max_contents_size
)
5910 max_contents_size
= sec
->size
;
5912 if (coff_section_data (sec
->owner
, sec
) != NULL
5913 && xcoff_section_data (sec
->owner
, sec
) != NULL
5914 && (xcoff_section_data (sec
->owner
, sec
)->lineno_count
5915 > max_lineno_count
))
5917 xcoff_section_data (sec
->owner
, sec
)->lineno_count
;
5918 if (sec
->reloc_count
> max_reloc_count
)
5919 max_reloc_count
= sec
->reloc_count
;
5921 else if (p
->type
== bfd_section_reloc_link_order
5922 || p
->type
== bfd_symbol_reloc_link_order
)
5927 /* Compute the file positions for all the sections. */
5928 if (abfd
->output_has_begun
)
5930 if (xcoff_hash_table (info
)->file_align
!= 0)
5937 file_align
= xcoff_hash_table (info
)->file_align
;
5938 if (file_align
!= 0)
5940 bfd_boolean saw_contents
;
5944 /* Insert .pad sections before every section which has
5945 contents and is loaded, if it is preceded by some other
5946 section which has contents and is loaded. */
5947 saw_contents
= TRUE
;
5948 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5950 if (strcmp (o
->name
, ".pad") == 0)
5951 saw_contents
= FALSE
;
5952 else if ((o
->flags
& SEC_HAS_CONTENTS
) != 0
5953 && (o
->flags
& SEC_LOAD
) != 0)
5956 saw_contents
= TRUE
;
5961 /* Create a pad section and place it before the section
5962 that needs padding. This requires unlinking and
5963 relinking the bfd's section list. */
5965 n
= bfd_make_section_anyway_with_flags (abfd
, ".pad",
5967 n
->alignment_power
= 0;
5969 bfd_section_list_remove (abfd
, n
);
5970 bfd_section_list_insert_before (abfd
, o
, n
);
5971 saw_contents
= FALSE
;
5976 /* Reset the section indices after inserting the new
5979 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5982 o
->target_index
= indx
;
5984 BFD_ASSERT ((unsigned int) indx
== abfd
->section_count
);
5986 /* Work out appropriate sizes for the .pad sections to force
5987 each section to land on a page boundary. This bit of
5988 code knows what compute_section_file_positions is going
5990 sofar
= bfd_coff_filhsz (abfd
);
5991 sofar
+= bfd_coff_aoutsz (abfd
);
5992 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
5993 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5994 if ((bfd_xcoff_is_reloc_count_overflow
5995 (abfd
, (bfd_vma
) o
->reloc_count
))
5996 || (bfd_xcoff_is_lineno_count_overflow
5997 (abfd
, (bfd_vma
) o
->lineno_count
)))
5998 /* 64 does not overflow, need to check if 32 does */
5999 sofar
+= bfd_coff_scnhsz (abfd
);
6001 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6003 if (strcmp (o
->name
, ".pad") == 0)
6007 BFD_ASSERT (o
->size
== 0);
6008 pageoff
= sofar
& (file_align
- 1);
6011 o
->size
= file_align
- pageoff
;
6012 sofar
+= file_align
- pageoff
;
6013 o
->flags
|= SEC_HAS_CONTENTS
;
6018 if ((o
->flags
& SEC_HAS_CONTENTS
) != 0)
6019 sofar
+= BFD_ALIGN (o
->size
,
6020 1 << o
->alignment_power
);
6025 if (! bfd_coff_compute_section_file_positions (abfd
))
6029 /* Allocate space for the pointers we need to keep for the relocs. */
6033 /* We use section_count + 1, rather than section_count, because
6034 the target_index fields are 1 based. */
6035 amt
= abfd
->section_count
+ 1;
6036 amt
*= sizeof (struct xcoff_link_section_info
);
6037 flinfo
.section_info
= bfd_malloc (amt
);
6038 if (flinfo
.section_info
== NULL
)
6040 for (i
= 0; i
<= abfd
->section_count
; i
++)
6042 flinfo
.section_info
[i
].relocs
= NULL
;
6043 flinfo
.section_info
[i
].rel_hashes
= NULL
;
6044 flinfo
.section_info
[i
].toc_rel_hashes
= NULL
;
6048 /* Set the file positions for the relocs. */
6049 rel_filepos
= obj_relocbase (abfd
);
6050 relsz
= bfd_coff_relsz (abfd
);
6051 max_output_reloc_count
= 0;
6052 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6054 if (o
->reloc_count
== 0)
6058 /* A stripped file has no relocs. However, we still
6059 allocate the buffers, so that later code doesn't have to
6060 worry about whether we are stripping or not. */
6061 if (info
->strip
== strip_all
)
6065 o
->flags
|= SEC_RELOC
;
6066 o
->rel_filepos
= rel_filepos
;
6067 rel_filepos
+= o
->reloc_count
* relsz
;
6070 /* We don't know the indices of global symbols until we have
6071 written out all the local symbols. For each section in
6072 the output file, we keep an array of pointers to hash
6073 table entries. Each entry in the array corresponds to a
6074 reloc. When we find a reloc against a global symbol, we
6075 set the corresponding entry in this array so that we can
6076 fix up the symbol index after we have written out all the
6079 Because of this problem, we also keep the relocs in
6080 memory until the end of the link. This wastes memory.
6081 We could backpatch the file later, I suppose, although it
6083 amt
= o
->reloc_count
;
6084 amt
*= sizeof (struct internal_reloc
);
6085 flinfo
.section_info
[o
->target_index
].relocs
= bfd_malloc (amt
);
6087 amt
= o
->reloc_count
;
6088 amt
*= sizeof (struct xcoff_link_hash_entry
*);
6089 flinfo
.section_info
[o
->target_index
].rel_hashes
= bfd_malloc (amt
);
6091 if (flinfo
.section_info
[o
->target_index
].relocs
== NULL
6092 || flinfo
.section_info
[o
->target_index
].rel_hashes
== NULL
)
6095 if (o
->reloc_count
> max_output_reloc_count
)
6096 max_output_reloc_count
= o
->reloc_count
;
6100 /* We now know the size of the relocs, so we can determine the file
6101 positions of the line numbers. */
6102 line_filepos
= rel_filepos
;
6103 flinfo
.line_filepos
= line_filepos
;
6104 linesz
= bfd_coff_linesz (abfd
);
6105 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6107 if (o
->lineno_count
== 0)
6108 o
->line_filepos
= 0;
6111 o
->line_filepos
= line_filepos
;
6112 line_filepos
+= o
->lineno_count
* linesz
;
6115 /* Reset the reloc and lineno counts, so that we can use them to
6116 count the number of entries we have output so far. */
6118 o
->lineno_count
= 0;
6121 obj_sym_filepos (abfd
) = line_filepos
;
6123 /* Figure out the largest number of symbols in an input BFD. Take
6124 the opportunity to clear the output_has_begun fields of all the
6125 input BFD's. We want at least 6 symbols, since that is the
6126 number which xcoff_write_global_symbol may need. */
6128 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link
.next
)
6132 sub
->output_has_begun
= FALSE
;
6133 sz
= obj_raw_syment_count (sub
);
6134 if (sz
> max_sym_count
)
6138 /* Allocate some buffers used while linking. */
6139 amt
= max_sym_count
* sizeof (struct internal_syment
);
6140 flinfo
.internal_syms
= bfd_malloc (amt
);
6142 amt
= max_sym_count
* sizeof (long);
6143 flinfo
.sym_indices
= bfd_malloc (amt
);
6145 amt
= (max_sym_count
+ 1) * symesz
;
6146 flinfo
.outsyms
= bfd_malloc (amt
);
6148 amt
= max_lineno_count
* bfd_coff_linesz (abfd
);
6149 flinfo
.linenos
= bfd_malloc (amt
);
6151 amt
= max_contents_size
;
6152 flinfo
.contents
= bfd_malloc (amt
);
6154 amt
= max_reloc_count
* relsz
;
6155 flinfo
.external_relocs
= bfd_malloc (amt
);
6157 if ((flinfo
.internal_syms
== NULL
&& max_sym_count
> 0)
6158 || (flinfo
.sym_indices
== NULL
&& max_sym_count
> 0)
6159 || flinfo
.outsyms
== NULL
6160 || (flinfo
.linenos
== NULL
&& max_lineno_count
> 0)
6161 || (flinfo
.contents
== NULL
&& max_contents_size
> 0)
6162 || (flinfo
.external_relocs
== NULL
&& max_reloc_count
> 0))
6165 obj_raw_syment_count (abfd
) = 0;
6167 /* Find a TOC symbol, if we need one. */
6168 if (!xcoff_find_tc0 (abfd
, &flinfo
))
6171 /* We now know the position of everything in the file, except that
6172 we don't know the size of the symbol table and therefore we don't
6173 know where the string table starts. We just build the string
6174 table in memory as we go along. We process all the relocations
6175 for a single input file at once. */
6176 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6178 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
6180 if (p
->type
== bfd_indirect_link_order
6181 && p
->u
.indirect
.section
->owner
->xvec
== abfd
->xvec
)
6183 sub
= p
->u
.indirect
.section
->owner
;
6184 if (! sub
->output_has_begun
)
6186 if (! xcoff_link_input_bfd (&flinfo
, sub
))
6188 sub
->output_has_begun
= TRUE
;
6191 else if (p
->type
== bfd_section_reloc_link_order
6192 || p
->type
== bfd_symbol_reloc_link_order
)
6194 if (! xcoff_reloc_link_order (abfd
, &flinfo
, o
, p
))
6199 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
6205 /* Free up the buffers used by xcoff_link_input_bfd. */
6206 if (flinfo
.internal_syms
!= NULL
)
6208 free (flinfo
.internal_syms
);
6209 flinfo
.internal_syms
= NULL
;
6211 if (flinfo
.sym_indices
!= NULL
)
6213 free (flinfo
.sym_indices
);
6214 flinfo
.sym_indices
= NULL
;
6216 if (flinfo
.linenos
!= NULL
)
6218 free (flinfo
.linenos
);
6219 flinfo
.linenos
= NULL
;
6221 if (flinfo
.contents
!= NULL
)
6223 free (flinfo
.contents
);
6224 flinfo
.contents
= NULL
;
6226 if (flinfo
.external_relocs
!= NULL
)
6228 free (flinfo
.external_relocs
);
6229 flinfo
.external_relocs
= NULL
;
6232 /* The value of the last C_FILE symbol is supposed to be -1. Write
6234 if (flinfo
.last_file_index
!= -1)
6236 flinfo
.last_file
.n_value
= -(bfd_vma
) 1;
6237 bfd_coff_swap_sym_out (abfd
, (void *) &flinfo
.last_file
,
6238 (void *) flinfo
.outsyms
);
6239 pos
= obj_sym_filepos (abfd
) + flinfo
.last_file_index
* symesz
;
6240 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
6241 || bfd_bwrite (flinfo
.outsyms
, symesz
, abfd
) != symesz
)
6245 /* Write out all the global symbols which do not come from XCOFF
6247 bfd_hash_traverse (&info
->hash
->table
, xcoff_write_global_symbol
, &flinfo
);
6249 if (flinfo
.outsyms
!= NULL
)
6251 free (flinfo
.outsyms
);
6252 flinfo
.outsyms
= NULL
;
6255 /* Now that we have written out all the global symbols, we know the
6256 symbol indices to use for relocs against them, and we can finally
6257 write out the relocs. */
6258 amt
= max_output_reloc_count
* relsz
;
6259 external_relocs
= bfd_malloc (amt
);
6260 if (external_relocs
== NULL
&& max_output_reloc_count
!= 0)
6263 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6265 struct internal_reloc
*irel
;
6266 struct internal_reloc
*irelend
;
6267 struct xcoff_link_hash_entry
**rel_hash
;
6268 struct xcoff_toc_rel_hash
*toc_rel_hash
;
6270 bfd_size_type rel_size
;
6272 /* A stripped file has no relocs. */
6273 if (info
->strip
== strip_all
)
6279 if (o
->reloc_count
== 0)
6282 irel
= flinfo
.section_info
[o
->target_index
].relocs
;
6283 irelend
= irel
+ o
->reloc_count
;
6284 rel_hash
= flinfo
.section_info
[o
->target_index
].rel_hashes
;
6285 for (; irel
< irelend
; irel
++, rel_hash
++)
6287 if (*rel_hash
!= NULL
)
6289 if ((*rel_hash
)->indx
< 0)
6291 (*info
->callbacks
->unattached_reloc
)
6292 (info
, (*rel_hash
)->root
.root
.string
,
6293 NULL
, o
, irel
->r_vaddr
);
6294 (*rel_hash
)->indx
= 0;
6296 irel
->r_symndx
= (*rel_hash
)->indx
;
6300 for (toc_rel_hash
= flinfo
.section_info
[o
->target_index
].toc_rel_hashes
;
6301 toc_rel_hash
!= NULL
;
6302 toc_rel_hash
= toc_rel_hash
->next
)
6304 if (toc_rel_hash
->h
->u
.toc_indx
< 0)
6306 (*info
->callbacks
->unattached_reloc
)
6307 (info
, toc_rel_hash
->h
->root
.root
.string
,
6308 NULL
, o
, toc_rel_hash
->rel
->r_vaddr
);
6309 toc_rel_hash
->h
->u
.toc_indx
= 0;
6311 toc_rel_hash
->rel
->r_symndx
= toc_rel_hash
->h
->u
.toc_indx
;
6314 /* XCOFF requires that the relocs be sorted by address. We tend
6315 to produce them in the order in which their containing csects
6316 appear in the symbol table, which is not necessarily by
6317 address. So we sort them here. There may be a better way to
6319 qsort ((void *) flinfo
.section_info
[o
->target_index
].relocs
,
6320 o
->reloc_count
, sizeof (struct internal_reloc
),
6323 irel
= flinfo
.section_info
[o
->target_index
].relocs
;
6324 irelend
= irel
+ o
->reloc_count
;
6325 erel
= external_relocs
;
6326 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
6327 bfd_coff_swap_reloc_out (abfd
, (void *) irel
, (void *) erel
);
6329 rel_size
= relsz
* o
->reloc_count
;
6330 if (bfd_seek (abfd
, o
->rel_filepos
, SEEK_SET
) != 0
6331 || bfd_bwrite ((void *) external_relocs
, rel_size
, abfd
) != rel_size
)
6335 if (external_relocs
!= NULL
)
6337 free (external_relocs
);
6338 external_relocs
= NULL
;
6341 /* Free up the section information. */
6342 if (flinfo
.section_info
!= NULL
)
6346 for (i
= 0; i
< abfd
->section_count
; i
++)
6348 if (flinfo
.section_info
[i
].relocs
!= NULL
)
6349 free (flinfo
.section_info
[i
].relocs
);
6350 if (flinfo
.section_info
[i
].rel_hashes
!= NULL
)
6351 free (flinfo
.section_info
[i
].rel_hashes
);
6353 free (flinfo
.section_info
);
6354 flinfo
.section_info
= NULL
;
6357 /* Write out the loader section contents. */
6358 o
= xcoff_hash_table (info
)->loader_section
;
6361 BFD_ASSERT ((bfd_byte
*) flinfo
.ldrel
6362 == (xcoff_hash_table (info
)->loader_section
->contents
6363 + xcoff_hash_table (info
)->ldhdr
.l_impoff
));
6364 if (!bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6365 (file_ptr
) o
->output_offset
, o
->size
))
6369 /* Write out the magic sections. */
6370 o
= xcoff_hash_table (info
)->linkage_section
;
6372 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6373 (file_ptr
) o
->output_offset
,
6376 o
= xcoff_hash_table (info
)->toc_section
;
6378 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6379 (file_ptr
) o
->output_offset
,
6382 o
= xcoff_hash_table (info
)->descriptor_section
;
6384 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6385 (file_ptr
) o
->output_offset
,
6389 /* Write out the string table. */
6390 pos
= obj_sym_filepos (abfd
) + obj_raw_syment_count (abfd
) * symesz
;
6391 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6394 _bfd_stringtab_size (flinfo
.strtab
) + STRING_SIZE_SIZE
,
6396 amt
= STRING_SIZE_SIZE
;
6397 if (bfd_bwrite (strbuf
, amt
, abfd
) != amt
)
6399 if (! _bfd_stringtab_emit (abfd
, flinfo
.strtab
))
6402 _bfd_stringtab_free (flinfo
.strtab
);
6404 /* Write out the debugging string table. */
6405 o
= xcoff_hash_table (info
)->debug_section
;
6408 struct bfd_strtab_hash
*debug_strtab
;
6410 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
6411 BFD_ASSERT (o
->output_section
->size
- o
->output_offset
6412 >= _bfd_stringtab_size (debug_strtab
));
6413 pos
= o
->output_section
->filepos
+ o
->output_offset
;
6414 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6416 if (! _bfd_stringtab_emit (abfd
, debug_strtab
))
6420 /* Setting symcount to 0 will cause write_object_contents to
6421 not try to write out the symbols. */
6427 if (flinfo
.strtab
!= NULL
)
6428 _bfd_stringtab_free (flinfo
.strtab
);
6430 if (flinfo
.section_info
!= NULL
)
6434 for (i
= 0; i
< abfd
->section_count
; i
++)
6436 if (flinfo
.section_info
[i
].relocs
!= NULL
)
6437 free (flinfo
.section_info
[i
].relocs
);
6438 if (flinfo
.section_info
[i
].rel_hashes
!= NULL
)
6439 free (flinfo
.section_info
[i
].rel_hashes
);
6441 free (flinfo
.section_info
);
6444 if (flinfo
.internal_syms
!= NULL
)
6445 free (flinfo
.internal_syms
);
6446 if (flinfo
.sym_indices
!= NULL
)
6447 free (flinfo
.sym_indices
);
6448 if (flinfo
.outsyms
!= NULL
)
6449 free (flinfo
.outsyms
);
6450 if (flinfo
.linenos
!= NULL
)
6451 free (flinfo
.linenos
);
6452 if (flinfo
.contents
!= NULL
)
6453 free (flinfo
.contents
);
6454 if (flinfo
.external_relocs
!= NULL
)
6455 free (flinfo
.external_relocs
);
6456 if (external_relocs
!= NULL
)
6457 free (external_relocs
);