1 /* POWER/PowerPC XCOFF linker support.
2 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2006, 2007, 2008 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
27 #include "coff/internal.h"
28 #include "coff/xcoff.h"
31 #include "libiberty.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 bfd_size_type 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 /* Create a XCOFF link hash table. */
577 struct bfd_link_hash_table
*
578 _bfd_xcoff_bfd_link_hash_table_create (bfd
*abfd
)
580 struct xcoff_link_hash_table
*ret
;
581 bfd_size_type amt
= sizeof (* ret
);
583 ret
= bfd_malloc (amt
);
586 if (!_bfd_link_hash_table_init (&ret
->root
, abfd
, xcoff_link_hash_newfunc
,
587 sizeof (struct xcoff_link_hash_entry
)))
593 ret
->debug_strtab
= _bfd_xcoff_stringtab_init ();
594 ret
->debug_section
= NULL
;
595 ret
->loader_section
= NULL
;
596 ret
->ldrel_count
= 0;
597 memset (&ret
->ldhdr
, 0, sizeof (struct internal_ldhdr
));
598 ret
->linkage_section
= NULL
;
599 ret
->toc_section
= NULL
;
600 ret
->descriptor_section
= NULL
;
605 ret
->archive_info
= htab_create (37, xcoff_archive_info_hash
,
606 xcoff_archive_info_eq
, NULL
);
607 memset (ret
->special_sections
, 0, sizeof ret
->special_sections
);
609 /* The linker will always generate a full a.out header. We need to
610 record that fact now, before the sizeof_headers routine could be
612 xcoff_data (abfd
)->full_aouthdr
= TRUE
;
617 /* Free a XCOFF link hash table. */
620 _bfd_xcoff_bfd_link_hash_table_free (struct bfd_link_hash_table
*hash
)
622 struct xcoff_link_hash_table
*ret
= (struct xcoff_link_hash_table
*) hash
;
624 _bfd_stringtab_free (ret
->debug_strtab
);
625 bfd_hash_table_free (&ret
->root
.table
);
629 /* Read internal relocs for an XCOFF csect. This is a wrapper around
630 _bfd_coff_read_internal_relocs which tries to take advantage of any
631 relocs which may have been cached for the enclosing section. */
633 static struct internal_reloc
*
634 xcoff_read_internal_relocs (bfd
*abfd
,
637 bfd_byte
*external_relocs
,
638 bfd_boolean require_internal
,
639 struct internal_reloc
*internal_relocs
)
641 if (coff_section_data (abfd
, sec
) != NULL
642 && coff_section_data (abfd
, sec
)->relocs
== NULL
643 && xcoff_section_data (abfd
, sec
) != NULL
)
647 enclosing
= xcoff_section_data (abfd
, sec
)->enclosing
;
649 if (enclosing
!= NULL
650 && (coff_section_data (abfd
, enclosing
) == NULL
651 || coff_section_data (abfd
, enclosing
)->relocs
== NULL
)
653 && enclosing
->reloc_count
> 0)
655 if (_bfd_coff_read_internal_relocs (abfd
, enclosing
, TRUE
,
656 external_relocs
, FALSE
, NULL
)
661 if (enclosing
!= NULL
662 && coff_section_data (abfd
, enclosing
) != NULL
663 && coff_section_data (abfd
, enclosing
)->relocs
!= NULL
)
667 off
= ((sec
->rel_filepos
- enclosing
->rel_filepos
)
668 / bfd_coff_relsz (abfd
));
670 if (! require_internal
)
671 return coff_section_data (abfd
, enclosing
)->relocs
+ off
;
672 memcpy (internal_relocs
,
673 coff_section_data (abfd
, enclosing
)->relocs
+ off
,
674 sec
->reloc_count
* sizeof (struct internal_reloc
));
675 return internal_relocs
;
679 return _bfd_coff_read_internal_relocs (abfd
, sec
, cache
, external_relocs
,
680 require_internal
, internal_relocs
);
683 /* Split FILENAME into an import path and an import filename,
684 storing them in *IMPPATH and *IMPFILE respectively. */
687 bfd_xcoff_split_import_path (bfd
*abfd
, const char *filename
,
688 const char **imppath
, const char **impfile
)
690 const char *basename
;
694 basename
= lbasename (filename
);
695 length
= basename
- filename
;
697 /* The filename has no directory component, so use an empty path. */
699 else if (length
== 1)
700 /* The filename is in the root directory. */
704 /* Extract the (non-empty) directory part. Note that we don't
705 need to strip duplicate directory separators from any part
706 of the string; the native linker doesn't do that either. */
707 path
= bfd_alloc (abfd
, length
);
710 memcpy (path
, filename
, length
- 1);
711 path
[length
- 1] = 0;
718 /* Set ARCHIVE's import path as though its filename had been given
722 bfd_xcoff_set_archive_import_path (struct bfd_link_info
*info
,
723 bfd
*archive
, const char *filename
)
725 struct xcoff_archive_info
*archive_info
;
727 archive_info
= xcoff_get_archive_info (info
, archive
);
728 return (archive_info
!= NULL
729 && bfd_xcoff_split_import_path (archive
, filename
,
730 &archive_info
->imppath
,
731 &archive_info
->impfile
));
734 /* H is an imported symbol. Set the import module's path, file and member
735 to IMPATH, IMPFILE and IMPMEMBER respectively. All three are null if
736 no specific import module is specified. */
739 xcoff_set_import_path (struct bfd_link_info
*info
,
740 struct xcoff_link_hash_entry
*h
,
741 const char *imppath
, const char *impfile
,
742 const char *impmember
)
745 struct xcoff_import_file
**pp
;
747 /* We overload the ldindx field to hold the l_ifile value for this
749 BFD_ASSERT (h
->ldsym
== NULL
);
750 BFD_ASSERT ((h
->flags
& XCOFF_BUILT_LDSYM
) == 0);
755 /* We start c at 1 because the first entry in the import list is
756 reserved for the library search path. */
757 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
759 pp
= &(*pp
)->next
, ++c
)
761 if (strcmp ((*pp
)->path
, imppath
) == 0
762 && strcmp ((*pp
)->file
, impfile
) == 0
763 && strcmp ((*pp
)->member
, impmember
) == 0)
769 struct xcoff_import_file
*n
;
770 bfd_size_type amt
= sizeof (* n
);
772 n
= bfd_alloc (info
->output_bfd
, amt
);
778 n
->member
= impmember
;
786 /* H is the bfd symbol associated with exported .loader symbol LDSYM.
787 Return true if LDSYM defines H. */
790 xcoff_dynamic_definition_p (struct xcoff_link_hash_entry
*h
,
791 struct internal_ldsym
*ldsym
)
793 /* If we didn't know about H before processing LDSYM, LDSYM
794 definitely defines H. */
795 if (h
->root
.type
== bfd_link_hash_new
)
798 /* If H is currently a weak dynamic symbol, and if LDSYM is a strong
799 dynamic symbol, LDSYM trumps the current definition of H. */
800 if ((ldsym
->l_smtype
& L_WEAK
) == 0
801 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0
802 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
803 && (h
->root
.type
== bfd_link_hash_defweak
804 || h
->root
.type
== bfd_link_hash_undefweak
))
807 /* If H is currently undefined, LDSYM defines it. */
808 if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0
809 && (h
->root
.type
== bfd_link_hash_undefined
810 || h
->root
.type
== bfd_link_hash_undefweak
))
816 /* This function is used to add symbols from a dynamic object to the
817 global symbol table. */
820 xcoff_link_add_dynamic_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
824 struct internal_ldhdr ldhdr
;
826 bfd_byte
*elsym
, *elsymend
;
827 struct xcoff_import_file
*n
;
829 struct xcoff_import_file
**pp
;
831 /* We can only handle a dynamic object if we are generating an XCOFF
833 if (info
->output_bfd
->xvec
!= abfd
->xvec
)
835 (*_bfd_error_handler
)
836 (_("%s: XCOFF shared object when not producing XCOFF output"),
837 bfd_get_filename (abfd
));
838 bfd_set_error (bfd_error_invalid_operation
);
842 /* The symbols we use from a dynamic object are not the symbols in
843 the normal symbol table, but, rather, the symbols in the export
844 table. If there is a global symbol in a dynamic object which is
845 not in the export table, the loader will not be able to find it,
846 so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
847 libc.a has symbols in the export table which are not in the
850 /* Read in the .loader section. FIXME: We should really use the
851 o_snloader field in the a.out header, rather than grabbing the
853 lsec
= bfd_get_section_by_name (abfd
, ".loader");
856 (*_bfd_error_handler
)
857 (_("%s: dynamic object with no .loader section"),
858 bfd_get_filename (abfd
));
859 bfd_set_error (bfd_error_no_symbols
);
863 if (! xcoff_get_section_contents (abfd
, lsec
))
865 contents
= coff_section_data (abfd
, lsec
)->contents
;
867 /* Remove the sections from this object, so that they do not get
868 included in the link. */
869 bfd_section_list_clear (abfd
);
871 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
873 strings
= (char *) contents
+ ldhdr
.l_stoff
;
875 elsym
= contents
+ bfd_xcoff_loader_symbol_offset(abfd
, &ldhdr
);
877 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz(abfd
);
879 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz(abfd
))
881 struct internal_ldsym ldsym
;
882 char nambuf
[SYMNMLEN
+ 1];
884 struct xcoff_link_hash_entry
*h
;
886 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
888 /* We are only interested in exported symbols. */
889 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
892 if (ldsym
._l
._l_l
._l_zeroes
== 0)
893 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
896 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
897 nambuf
[SYMNMLEN
] = '\0';
901 /* Normally we could not call xcoff_link_hash_lookup in an add
902 symbols routine, since we might not be using an XCOFF hash
903 table. However, we verified above that we are using an XCOFF
906 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
,
911 if (!xcoff_dynamic_definition_p (h
, &ldsym
))
914 h
->flags
|= XCOFF_DEF_DYNAMIC
;
915 h
->smclas
= ldsym
.l_smclas
;
916 if (h
->smclas
== XMC_XO
)
918 /* This symbol has an absolute value. */
919 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
920 h
->root
.type
= bfd_link_hash_defweak
;
922 h
->root
.type
= bfd_link_hash_defined
;
923 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
924 h
->root
.u
.def
.value
= ldsym
.l_value
;
928 /* Otherwise, we don't bother to actually define the symbol,
929 since we don't have a section to put it in anyhow.
930 We assume instead that an undefined XCOFF_DEF_DYNAMIC symbol
931 should be imported from the symbol's undef.abfd. */
932 if ((ldsym
.l_smtype
& L_WEAK
) != 0)
933 h
->root
.type
= bfd_link_hash_undefweak
;
935 h
->root
.type
= bfd_link_hash_undefined
;
936 h
->root
.u
.undef
.abfd
= abfd
;
939 /* If this symbol defines a function descriptor, then it
940 implicitly defines the function code as well. */
941 if (h
->smclas
== XMC_DS
942 || (h
->smclas
== XMC_XO
&& name
[0] != '.'))
943 h
->flags
|= XCOFF_DESCRIPTOR
;
944 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
946 struct xcoff_link_hash_entry
*hds
;
953 dsnm
= bfd_malloc ((bfd_size_type
) strlen (name
) + 2);
957 strcpy (dsnm
+ 1, name
);
958 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
), dsnm
,
968 if (xcoff_dynamic_definition_p (hds
, &ldsym
))
970 hds
->root
.type
= h
->root
.type
;
971 hds
->flags
|= XCOFF_DEF_DYNAMIC
;
972 if (h
->smclas
== XMC_XO
)
974 /* An absolute symbol appears to actually define code, not a
975 function descriptor. This is how some math functions are
976 implemented on AIX 4.1. */
977 hds
->smclas
= XMC_XO
;
978 hds
->root
.u
.def
.section
= bfd_abs_section_ptr
;
979 hds
->root
.u
.def
.value
= ldsym
.l_value
;
983 hds
->smclas
= XMC_PR
;
984 hds
->root
.u
.undef
.abfd
= abfd
;
985 /* We do not want to add this to the undefined
992 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
994 free (coff_section_data (abfd
, lsec
)->contents
);
995 coff_section_data (abfd
, lsec
)->contents
= NULL
;
998 /* Record this file in the import files. */
999 n
= bfd_alloc (abfd
, (bfd_size_type
) sizeof (struct xcoff_import_file
));
1004 if (abfd
->my_archive
== NULL
)
1006 if (!bfd_xcoff_split_import_path (abfd
, abfd
->filename
,
1007 &n
->path
, &n
->file
))
1013 struct xcoff_archive_info
*archive_info
;
1015 archive_info
= xcoff_get_archive_info (info
, abfd
->my_archive
);
1016 if (!archive_info
->impfile
)
1018 if (!bfd_xcoff_split_import_path (archive_info
->archive
,
1019 archive_info
->archive
->filename
,
1020 &archive_info
->imppath
,
1021 &archive_info
->impfile
))
1024 n
->path
= archive_info
->imppath
;
1025 n
->file
= archive_info
->impfile
;
1026 n
->member
= bfd_get_filename (abfd
);
1029 /* We start c at 1 because the first import file number is reserved
1031 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
1033 pp
= &(*pp
)->next
, ++c
)
1037 xcoff_data (abfd
)->import_file_id
= c
;
1042 /* xcoff_link_create_extra_sections
1044 Takes care of creating the .loader, .gl, .ds, .debug and sections. */
1047 xcoff_link_create_extra_sections (bfd
* abfd
, struct bfd_link_info
*info
)
1049 bfd_boolean return_value
= FALSE
;
1051 if (info
->output_bfd
->xvec
== abfd
->xvec
)
1053 /* We need to build a .loader section, so we do it here. This
1054 won't work if we're producing an XCOFF output file with no
1055 XCOFF input files. FIXME. */
1057 if (!info
->relocatable
1058 && xcoff_hash_table (info
)->loader_section
== NULL
)
1061 flagword flags
= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1063 lsec
= bfd_make_section_anyway_with_flags (abfd
, ".loader", flags
);
1067 xcoff_hash_table (info
)->loader_section
= lsec
;
1070 /* Likewise for the linkage section. */
1071 if (xcoff_hash_table (info
)->linkage_section
== NULL
)
1074 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1077 lsec
= bfd_make_section_anyway_with_flags (abfd
, ".gl", flags
);
1081 xcoff_hash_table (info
)->linkage_section
= lsec
;
1082 lsec
->alignment_power
= 2;
1085 /* Likewise for the TOC section. */
1086 if (xcoff_hash_table (info
)->toc_section
== NULL
)
1089 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1092 tsec
= bfd_make_section_anyway_with_flags (abfd
, ".tc", flags
);
1096 xcoff_hash_table (info
)->toc_section
= tsec
;
1097 tsec
->alignment_power
= 2;
1100 /* Likewise for the descriptor section. */
1101 if (xcoff_hash_table (info
)->descriptor_section
== NULL
)
1104 flagword flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
1107 dsec
= bfd_make_section_anyway_with_flags (abfd
, ".ds", flags
);
1111 xcoff_hash_table (info
)->descriptor_section
= dsec
;
1112 dsec
->alignment_power
= 2;
1115 /* Likewise for the .debug section. */
1116 if (xcoff_hash_table (info
)->debug_section
== NULL
1117 && info
->strip
!= strip_all
)
1120 flagword flags
= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1122 dsec
= bfd_make_section_anyway_with_flags (abfd
, ".debug", flags
);
1126 xcoff_hash_table (info
)->debug_section
= dsec
;
1130 return_value
= TRUE
;
1134 return return_value
;
1137 /* Returns the index of reloc in RELOCS with the least address greater
1138 than or equal to ADDRESS. The relocs are sorted by address. */
1140 static bfd_size_type
1141 xcoff_find_reloc (struct internal_reloc
*relocs
,
1142 bfd_size_type count
,
1145 bfd_size_type min
, max
, this;
1149 if (count
== 1 && relocs
[0].r_vaddr
< address
)
1158 /* Do a binary search over (min,max]. */
1159 while (min
+ 1 < max
)
1163 this = (max
+ min
) / 2;
1164 raddr
= relocs
[this].r_vaddr
;
1165 if (raddr
> address
)
1167 else if (raddr
< address
)
1176 if (relocs
[min
].r_vaddr
< address
)
1180 && relocs
[min
- 1].r_vaddr
== address
)
1186 /* Add all the symbols from an object file to the hash table.
1188 XCOFF is a weird format. A normal XCOFF .o files will have three
1189 COFF sections--.text, .data, and .bss--but each COFF section will
1190 contain many csects. These csects are described in the symbol
1191 table. From the linker's point of view, each csect must be
1192 considered a section in its own right. For example, a TOC entry is
1193 handled as a small XMC_TC csect. The linker must be able to merge
1194 different TOC entries together, which means that it must be able to
1195 extract the XMC_TC csects from the .data section of the input .o
1198 From the point of view of our linker, this is, of course, a hideous
1199 nightmare. We cope by actually creating sections for each csect,
1200 and discarding the original sections. We then have to handle the
1201 relocation entries carefully, since the only way to tell which
1202 csect they belong to is to examine the address. */
1205 xcoff_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
1207 unsigned int n_tmask
;
1208 unsigned int n_btshft
;
1209 bfd_boolean default_copy
;
1210 bfd_size_type symcount
;
1211 struct xcoff_link_hash_entry
**sym_hash
;
1212 asection
**csect_cache
;
1213 unsigned int *lineno_counts
;
1214 bfd_size_type linesz
;
1216 asection
*last_real
;
1217 bfd_boolean keep_syms
;
1219 unsigned int csect_index
;
1220 asection
*first_csect
;
1221 bfd_size_type symesz
;
1224 struct reloc_info_struct
1226 struct internal_reloc
*relocs
;
1229 } *reloc_info
= NULL
;
1232 keep_syms
= obj_coff_keep_syms (abfd
);
1234 if ((abfd
->flags
& DYNAMIC
) != 0
1235 && ! info
->static_link
)
1237 if (! xcoff_link_add_dynamic_symbols (abfd
, info
))
1241 /* Create the loader, toc, gl, ds and debug sections, if needed. */
1242 if (! xcoff_link_create_extra_sections (abfd
, info
))
1245 if ((abfd
->flags
& DYNAMIC
) != 0
1246 && ! info
->static_link
)
1249 n_tmask
= coff_data (abfd
)->local_n_tmask
;
1250 n_btshft
= coff_data (abfd
)->local_n_btshft
;
1252 /* Define macros so that ISFCN, et. al., macros work correctly. */
1253 #define N_TMASK n_tmask
1254 #define N_BTSHFT n_btshft
1256 if (info
->keep_memory
)
1257 default_copy
= FALSE
;
1259 default_copy
= TRUE
;
1261 symcount
= obj_raw_syment_count (abfd
);
1263 /* We keep a list of the linker hash table entries that correspond
1264 to each external symbol. */
1265 amt
= symcount
* sizeof (struct xcoff_link_hash_entry
*);
1266 sym_hash
= bfd_zalloc (abfd
, amt
);
1267 if (sym_hash
== NULL
&& symcount
!= 0)
1269 coff_data (abfd
)->sym_hashes
= (struct coff_link_hash_entry
**) sym_hash
;
1271 /* Because of the weird stuff we are doing with XCOFF csects, we can
1272 not easily determine which section a symbol is in, so we store
1273 the information in the tdata for the input file. */
1274 amt
= symcount
* sizeof (asection
*);
1275 csect_cache
= bfd_zalloc (abfd
, amt
);
1276 if (csect_cache
== NULL
&& symcount
!= 0)
1278 xcoff_data (abfd
)->csects
= csect_cache
;
1280 /* We garbage-collect line-number information on a symbol-by-symbol
1281 basis, so we need to have quick access to the number of entries
1283 amt
= symcount
* sizeof (unsigned int);
1284 lineno_counts
= bfd_zalloc (abfd
, amt
);
1285 if (lineno_counts
== NULL
&& symcount
!= 0)
1287 xcoff_data (abfd
)->lineno_counts
= lineno_counts
;
1289 /* While splitting sections into csects, we need to assign the
1290 relocs correctly. The relocs and the csects must both be in
1291 order by VMA within a given section, so we handle this by
1292 scanning along the relocs as we process the csects. We index
1293 into reloc_info using the section target_index. */
1294 amt
= abfd
->section_count
+ 1;
1295 amt
*= sizeof (struct reloc_info_struct
);
1296 reloc_info
= bfd_zmalloc (amt
);
1297 if (reloc_info
== NULL
)
1300 /* Read in the relocs and line numbers for each section. */
1301 linesz
= bfd_coff_linesz (abfd
);
1303 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
1307 if ((o
->flags
& SEC_RELOC
) != 0)
1309 reloc_info
[o
->target_index
].relocs
=
1310 xcoff_read_internal_relocs (abfd
, o
, TRUE
, NULL
, FALSE
, NULL
);
1311 amt
= o
->reloc_count
;
1312 amt
*= sizeof (asection
*);
1313 reloc_info
[o
->target_index
].csects
= bfd_zmalloc (amt
);
1314 if (reloc_info
[o
->target_index
].csects
== NULL
)
1318 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1319 && o
->lineno_count
> 0)
1323 amt
= linesz
* o
->lineno_count
;
1324 linenos
= bfd_malloc (amt
);
1325 if (linenos
== NULL
)
1327 reloc_info
[o
->target_index
].linenos
= linenos
;
1328 if (bfd_seek (abfd
, o
->line_filepos
, SEEK_SET
) != 0
1329 || bfd_bread (linenos
, amt
, abfd
) != amt
)
1334 /* Don't let the linker relocation routines discard the symbols. */
1335 obj_coff_keep_syms (abfd
) = TRUE
;
1341 symesz
= bfd_coff_symesz (abfd
);
1342 BFD_ASSERT (symesz
== bfd_coff_auxesz (abfd
));
1343 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
1344 esym_end
= esym
+ symcount
* symesz
;
1346 while (esym
< esym_end
)
1348 struct internal_syment sym
;
1349 union internal_auxent aux
;
1351 char buf
[SYMNMLEN
+ 1];
1355 struct xcoff_link_hash_entry
*set_toc
;
1357 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
1359 /* In this pass we are only interested in symbols with csect
1361 if (!CSECT_SYM_P (sym
.n_sclass
))
1364 Normally csect is a .pr, .rw etc. created in the loop
1365 If C_FILE or first time, handle special
1367 Advance esym, sym_hash, csect_hash ptrs. */
1368 if (sym
.n_sclass
== C_FILE
)
1371 *csect_cache
= csect
;
1372 else if (first_csect
== NULL
|| sym
.n_sclass
== C_FILE
)
1373 *csect_cache
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1375 *csect_cache
= NULL
;
1376 esym
+= (sym
.n_numaux
+ 1) * symesz
;
1377 sym_hash
+= sym
.n_numaux
+ 1;
1378 csect_cache
+= sym
.n_numaux
+ 1;
1379 lineno_counts
+= sym
.n_numaux
+ 1;
1384 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
1389 /* If this symbol has line number information attached to it,
1390 and we're not stripping it, count the number of entries and
1391 add them to the count for this csect. In the final link pass
1392 we are going to attach line number information by symbol,
1393 rather than by section, in order to more easily handle
1394 garbage collection. */
1395 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1398 && ISFCN (sym
.n_type
))
1400 union internal_auxent auxlin
;
1402 bfd_coff_swap_aux_in (abfd
, (void *) (esym
+ symesz
),
1403 sym
.n_type
, sym
.n_sclass
,
1404 0, sym
.n_numaux
, (void *) &auxlin
);
1406 if (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
1408 asection
*enclosing
;
1409 bfd_signed_vma linoff
;
1411 enclosing
= xcoff_section_data (abfd
, csect
)->enclosing
;
1412 if (enclosing
== NULL
)
1414 (*_bfd_error_handler
)
1415 (_("%B: `%s' has line numbers but no enclosing section"),
1417 bfd_set_error (bfd_error_bad_value
);
1420 linoff
= (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
1421 - enclosing
->line_filepos
);
1422 /* Explicit cast to bfd_signed_vma for compiler. */
1423 if (linoff
< (bfd_signed_vma
) (enclosing
->lineno_count
* linesz
))
1425 struct internal_lineno lin
;
1426 bfd_byte
*linpstart
;
1428 linpstart
= (reloc_info
[enclosing
->target_index
].linenos
1430 bfd_coff_swap_lineno_in (abfd
, (void *) linpstart
, (void *) &lin
);
1432 && ((bfd_size_type
) lin
.l_addr
.l_symndx
1434 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1437 bfd_byte
*linpend
, *linp
;
1439 linpend
= (reloc_info
[enclosing
->target_index
].linenos
1440 + enclosing
->lineno_count
* linesz
);
1441 for (linp
= linpstart
+ linesz
;
1445 bfd_coff_swap_lineno_in (abfd
, (void *) linp
,
1447 if (lin
.l_lnno
== 0)
1450 *lineno_counts
= (linp
- linpstart
) / linesz
;
1451 /* The setting of line_filepos will only be
1452 useful if all the line number entries for a
1453 csect are contiguous; this only matters for
1455 if (csect
->line_filepos
== 0)
1456 csect
->line_filepos
=
1457 auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
;
1463 /* Pick up the csect auxiliary information. */
1464 if (sym
.n_numaux
== 0)
1466 (*_bfd_error_handler
)
1467 (_("%B: 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
);
1488 (*_bfd_error_handler
)
1489 (_("%B: symbol `%s' has unrecognized csect type %d"),
1491 bfd_set_error (bfd_error_bad_value
);
1495 /* This is an external reference. */
1496 if (sym
.n_sclass
== C_HIDEXT
1497 || sym
.n_scnum
!= N_UNDEF
1498 || aux
.x_csect
.x_scnlen
.l
!= 0)
1500 (*_bfd_error_handler
)
1501 (_("%B: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d"),
1502 abfd
, name
, sym
.n_sclass
, sym
.n_scnum
,
1503 aux
.x_csect
.x_scnlen
.l
);
1504 bfd_set_error (bfd_error_bad_value
);
1508 /* An XMC_XO external reference is actually a reference to
1509 an absolute location. */
1510 if (aux
.x_csect
.x_smclas
!= XMC_XO
)
1511 section
= bfd_und_section_ptr
;
1514 section
= bfd_abs_section_ptr
;
1515 value
= sym
.n_value
;
1521 csect_index
= -(unsigned) 1;
1523 /* When we see a TOC anchor, we record the TOC value. */
1524 if (aux
.x_csect
.x_smclas
== XMC_TC0
)
1526 if (sym
.n_sclass
!= C_HIDEXT
1527 || aux
.x_csect
.x_scnlen
.l
!= 0)
1529 (*_bfd_error_handler
)
1530 (_("%B: XMC_TC0 symbol `%s' is class %d scnlen %d"),
1531 abfd
, name
, sym
.n_sclass
, aux
.x_csect
.x_scnlen
.l
);
1532 bfd_set_error (bfd_error_bad_value
);
1535 xcoff_data (abfd
)->toc
= sym
.n_value
;
1538 /* We must merge TOC entries for the same symbol. We can
1539 merge two TOC entries if they are both C_HIDEXT, they
1540 both have the same name, they are both 4 or 8 bytes long, and
1541 they both have a relocation table entry for an external
1542 symbol with the same name. Unfortunately, this means
1543 that we must look through the relocations. Ick.
1545 Logic for 32 bit vs 64 bit.
1546 32 bit has a csect length of 4 for TOC
1547 64 bit has a csect length of 8 for TOC
1549 The conditions to get past the if-check are not that bad.
1550 They are what is used to create the TOC csects in the first
1552 if (aux
.x_csect
.x_smclas
== XMC_TC
1553 && sym
.n_sclass
== C_HIDEXT
1554 && info
->output_bfd
->xvec
== abfd
->xvec
1555 && ((bfd_xcoff_is_xcoff32 (abfd
)
1556 && aux
.x_csect
.x_scnlen
.l
== 4)
1557 || (bfd_xcoff_is_xcoff64 (abfd
)
1558 && aux
.x_csect
.x_scnlen
.l
== 8)))
1560 asection
*enclosing
;
1561 struct internal_reloc
*relocs
;
1562 bfd_size_type relindx
;
1563 struct internal_reloc
*rel
;
1565 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1566 if (enclosing
== NULL
)
1569 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1570 amt
= enclosing
->reloc_count
;
1571 relindx
= xcoff_find_reloc (relocs
, amt
, sym
.n_value
);
1572 rel
= relocs
+ relindx
;
1574 /* 32 bit R_POS r_size is 31
1575 64 bit R_POS r_size is 63 */
1576 if (relindx
< enclosing
->reloc_count
1577 && rel
->r_vaddr
== (bfd_vma
) sym
.n_value
1578 && rel
->r_type
== R_POS
1579 && ((bfd_xcoff_is_xcoff32 (abfd
)
1580 && rel
->r_size
== 31)
1581 || (bfd_xcoff_is_xcoff64 (abfd
)
1582 && rel
->r_size
== 63)))
1586 struct internal_syment relsym
;
1588 erelsym
= ((bfd_byte
*) obj_coff_external_syms (abfd
)
1589 + rel
->r_symndx
* symesz
);
1590 bfd_coff_swap_sym_in (abfd
, (void *) erelsym
, (void *) &relsym
);
1591 if (EXTERN_SYM_P (relsym
.n_sclass
))
1593 const char *relname
;
1594 char relbuf
[SYMNMLEN
+ 1];
1596 struct xcoff_link_hash_entry
*h
;
1598 /* At this point we know that the TOC entry is
1599 for an externally visible symbol. */
1600 relname
= _bfd_coff_internal_syment_name (abfd
, &relsym
,
1602 if (relname
== NULL
)
1605 /* We only merge TOC entries if the TC name is
1606 the same as the symbol name. This handles
1607 the normal case, but not common cases like
1608 SYM.P4 which gcc generates to store SYM + 4
1609 in the TOC. FIXME. */
1610 if (strcmp (name
, relname
) == 0)
1612 copy
= (! info
->keep_memory
1613 || relsym
._n
._n_n
._n_zeroes
!= 0
1614 || relsym
._n
._n_n
._n_offset
== 0);
1615 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1616 relname
, TRUE
, copy
,
1621 /* At this point h->root.type could be
1622 bfd_link_hash_new. That should be OK,
1623 since we know for sure that we will come
1624 across this symbol as we step through the
1627 /* We store h in *sym_hash for the
1628 convenience of the relocate_section
1632 if (h
->toc_section
!= NULL
)
1634 asection
**rel_csects
;
1636 /* We already have a TOC entry for this
1637 symbol, so we can just ignore this
1640 reloc_info
[enclosing
->target_index
].csects
;
1641 rel_csects
[relindx
] = bfd_und_section_ptr
;
1645 /* We are about to create a TOC entry for
1654 asection
*enclosing
;
1656 /* We need to create a new section. We get the name from
1657 the csect storage mapping class, so that the linker can
1658 accumulate similar csects together. */
1660 csect
= bfd_xcoff_create_csect_from_smclas(abfd
, &aux
, name
);
1664 /* The enclosing section is the main section : .data, .text
1665 or .bss that the csect is coming from. */
1666 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1667 if (enclosing
== NULL
)
1670 if (! bfd_is_abs_section (enclosing
)
1671 && ((bfd_vma
) sym
.n_value
< enclosing
->vma
1672 || ((bfd_vma
) sym
.n_value
+ aux
.x_csect
.x_scnlen
.l
1673 > enclosing
->vma
+ enclosing
->size
)))
1675 (*_bfd_error_handler
)
1676 (_("%B: csect `%s' not in enclosing section"),
1678 bfd_set_error (bfd_error_bad_value
);
1681 csect
->vma
= sym
.n_value
;
1682 csect
->filepos
= (enclosing
->filepos
1685 csect
->size
= aux
.x_csect
.x_scnlen
.l
;
1686 csect
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
1687 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1689 /* Record the enclosing section in the tdata for this new
1691 amt
= sizeof (struct coff_section_tdata
);
1692 csect
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1693 if (csect
->used_by_bfd
== NULL
)
1695 amt
= sizeof (struct xcoff_section_tdata
);
1696 coff_section_data (abfd
, csect
)->tdata
= bfd_zalloc (abfd
, amt
);
1697 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1699 xcoff_section_data (abfd
, csect
)->enclosing
= enclosing
;
1700 xcoff_section_data (abfd
, csect
)->lineno_count
=
1701 enclosing
->lineno_count
;
1703 if (enclosing
->owner
== abfd
)
1705 struct internal_reloc
*relocs
;
1706 bfd_size_type relindx
;
1707 struct internal_reloc
*rel
;
1708 asection
**rel_csect
;
1710 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1711 amt
= enclosing
->reloc_count
;
1712 relindx
= xcoff_find_reloc (relocs
, amt
, csect
->vma
);
1714 rel
= relocs
+ relindx
;
1715 rel_csect
= (reloc_info
[enclosing
->target_index
].csects
1718 csect
->rel_filepos
= (enclosing
->rel_filepos
1719 + relindx
* bfd_coff_relsz (abfd
));
1720 while (relindx
< enclosing
->reloc_count
1721 && *rel_csect
== NULL
1722 && rel
->r_vaddr
< csect
->vma
+ csect
->size
)
1726 csect
->flags
|= SEC_RELOC
;
1727 ++csect
->reloc_count
;
1734 /* There are a number of other fields and section flags
1735 which we do not bother to set. */
1737 csect_index
= ((esym
1738 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1741 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1743 if (first_csect
== NULL
)
1744 first_csect
= csect
;
1746 /* If this symbol is external, we treat it as starting at the
1747 beginning of the newly created section. */
1748 if (EXTERN_SYM_P (sym
.n_sclass
))
1754 /* If this is a TOC section for a symbol, record it. */
1755 if (set_toc
!= NULL
)
1756 set_toc
->toc_section
= csect
;
1761 /* This is a label definition. The x_scnlen field is the
1762 symbol index of the csect. Usually the XTY_LD symbol will
1763 follow its appropriate XTY_SD symbol. The .set pseudo op can
1764 cause the XTY_LD to not follow the XTY_SD symbol. */
1769 if (aux
.x_csect
.x_scnlen
.l
< 0
1770 || (aux
.x_csect
.x_scnlen
.l
1771 >= esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)))
1775 section
= xcoff_data (abfd
)->csects
[aux
.x_csect
.x_scnlen
.l
];
1777 || (section
->flags
& SEC_HAS_CONTENTS
) == 0)
1782 (*_bfd_error_handler
)
1783 (_("%B: misplaced XTY_LD `%s'"),
1785 bfd_set_error (bfd_error_bad_value
);
1789 value
= sym
.n_value
- csect
->vma
;
1794 /* This is an unitialized csect. We could base the name on
1795 the storage mapping class, but we don't bother except for
1796 an XMC_TD symbol. If this csect is externally visible,
1797 it is a common symbol. We put XMC_TD symbols in sections
1798 named .tocbss, and rely on the linker script to put that
1801 if (aux
.x_csect
.x_smclas
== XMC_TD
)
1803 /* The linker script puts the .td section in the data
1804 section after the .tc section. */
1805 csect
= bfd_make_section_anyway_with_flags (abfd
, ".td",
1809 csect
= bfd_make_section_anyway_with_flags (abfd
, ".bss",
1814 csect
->vma
= sym
.n_value
;
1815 csect
->size
= aux
.x_csect
.x_scnlen
.l
;
1816 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1817 /* There are a number of other fields and section flags
1818 which we do not bother to set. */
1820 csect_index
= ((esym
1821 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1824 amt
= sizeof (struct coff_section_tdata
);
1825 csect
->used_by_bfd
= bfd_zalloc (abfd
, amt
);
1826 if (csect
->used_by_bfd
== NULL
)
1828 amt
= sizeof (struct xcoff_section_tdata
);
1829 coff_section_data (abfd
, csect
)->tdata
= bfd_zalloc (abfd
, amt
);
1830 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1832 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1834 if (first_csect
== NULL
)
1835 first_csect
= csect
;
1837 if (EXTERN_SYM_P (sym
.n_sclass
))
1839 csect
->flags
|= SEC_IS_COMMON
;
1842 value
= aux
.x_csect
.x_scnlen
.l
;
1848 /* Check for magic symbol names. */
1849 if ((smtyp
== XTY_SD
|| smtyp
== XTY_CM
)
1850 && aux
.x_csect
.x_smclas
!= XMC_TC
1851 && aux
.x_csect
.x_smclas
!= XMC_TD
)
1857 if (strcmp (name
, "_text") == 0)
1858 i
= XCOFF_SPECIAL_SECTION_TEXT
;
1859 else if (strcmp (name
, "_etext") == 0)
1860 i
= XCOFF_SPECIAL_SECTION_ETEXT
;
1861 else if (strcmp (name
, "_data") == 0)
1862 i
= XCOFF_SPECIAL_SECTION_DATA
;
1863 else if (strcmp (name
, "_edata") == 0)
1864 i
= XCOFF_SPECIAL_SECTION_EDATA
;
1865 else if (strcmp (name
, "_end") == 0)
1866 i
= XCOFF_SPECIAL_SECTION_END
;
1868 else if (name
[0] == 'e' && strcmp (name
, "end") == 0)
1869 i
= XCOFF_SPECIAL_SECTION_END2
;
1872 xcoff_hash_table (info
)->special_sections
[i
] = csect
;
1875 /* Now we have enough information to add the symbol to the
1876 linker hash table. */
1878 if (EXTERN_SYM_P (sym
.n_sclass
))
1883 BFD_ASSERT (section
!= NULL
);
1885 /* We must copy the name into memory if we got it from the
1886 syment itself, rather than the string table. */
1887 copy
= default_copy
;
1888 if (sym
._n
._n_n
._n_zeroes
!= 0
1889 || sym
._n
._n_n
._n_offset
== 0)
1892 /* The AIX linker appears to only detect multiple symbol
1893 definitions when there is a reference to the symbol. If
1894 a symbol is defined multiple times, and the only
1895 references are from the same object file, the AIX linker
1896 appears to permit it. It does not merge the different
1897 definitions, but handles them independently. On the
1898 other hand, if there is a reference, the linker reports
1901 This matters because the AIX <net/net_globals.h> header
1902 file actually defines an initialized array, so we have to
1903 actually permit that to work.
1905 Just to make matters even more confusing, the AIX linker
1906 appears to permit multiple symbol definitions whenever
1907 the second definition is in an archive rather than an
1908 object file. This may be a consequence of the manner in
1909 which it handles archives: I think it may load the entire
1910 archive in as separate csects, and then let garbage
1911 collection discard symbols.
1913 We also have to handle the case of statically linking a
1914 shared object, which will cause symbol redefinitions,
1915 although this is an easier case to detect. */
1917 if (info
->output_bfd
->xvec
== abfd
->xvec
)
1919 if (! bfd_is_und_section (section
))
1920 *sym_hash
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1921 name
, TRUE
, copy
, FALSE
);
1923 /* Make a copy of the symbol name to prevent problems with
1925 *sym_hash
= ((struct xcoff_link_hash_entry
*)
1926 bfd_wrapped_link_hash_lookup (abfd
, info
, name
,
1927 TRUE
, TRUE
, FALSE
));
1929 if (*sym_hash
== NULL
)
1931 if (((*sym_hash
)->root
.type
== bfd_link_hash_defined
1932 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
1933 && ! bfd_is_und_section (section
)
1934 && ! bfd_is_com_section (section
))
1936 /* This is a second definition of a defined symbol. */
1937 if ((abfd
->flags
& DYNAMIC
) != 0
1938 && ((*sym_hash
)->smclas
!= XMC_GL
1939 || aux
.x_csect
.x_smclas
== XMC_GL
1940 || ((*sym_hash
)->root
.u
.def
.section
->owner
->flags
1943 /* The new symbol is from a shared library, and
1944 either the existing symbol is not global
1945 linkage code or this symbol is global linkage
1946 code. If the existing symbol is global
1947 linkage code and the new symbol is not, then
1948 we want to use the new symbol. */
1949 section
= bfd_und_section_ptr
;
1952 else if (((*sym_hash
)->flags
& XCOFF_DEF_REGULAR
) == 0
1953 && ((*sym_hash
)->flags
& XCOFF_DEF_DYNAMIC
) != 0)
1955 /* The existing symbol is from a shared library.
1957 (*sym_hash
)->root
.type
= bfd_link_hash_undefined
;
1958 (*sym_hash
)->root
.u
.undef
.abfd
=
1959 (*sym_hash
)->root
.u
.def
.section
->owner
;
1961 else if (abfd
->my_archive
!= NULL
)
1963 /* This is a redefinition in an object contained
1964 in an archive. Just ignore it. See the
1966 section
= bfd_und_section_ptr
;
1969 else if (sym
.n_sclass
== C_AIX_WEAKEXT
1970 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
1972 /* At least one of the definitions is weak.
1973 Allow the normal rules to take effect. */
1975 else if ((*sym_hash
)->root
.u
.undef
.next
!= NULL
1976 || info
->hash
->undefs_tail
== &(*sym_hash
)->root
)
1978 /* This symbol has been referenced. In this
1979 case, we just continue and permit the
1980 multiple definition error. See the comment
1981 above about the behaviour of the AIX linker. */
1983 else if ((*sym_hash
)->smclas
== aux
.x_csect
.x_smclas
)
1985 /* The symbols are both csects of the same
1986 class. There is at least a chance that this
1987 is a semi-legitimate redefinition. */
1988 section
= bfd_und_section_ptr
;
1990 (*sym_hash
)->flags
|= XCOFF_MULTIPLY_DEFINED
;
1993 else if (((*sym_hash
)->flags
& XCOFF_MULTIPLY_DEFINED
) != 0
1994 && (*sym_hash
)->root
.type
== bfd_link_hash_defined
1995 && (bfd_is_und_section (section
)
1996 || bfd_is_com_section (section
)))
1998 /* This is a reference to a multiply defined symbol.
1999 Report the error now. See the comment above
2000 about the behaviour of the AIX linker. We could
2001 also do this with warning symbols, but I'm not
2002 sure the XCOFF linker is wholly prepared to
2003 handle them, and that would only be a warning,
2005 if (! ((*info
->callbacks
->multiple_definition
)
2006 (info
, (*sym_hash
)->root
.root
.string
,
2007 NULL
, NULL
, (bfd_vma
) 0,
2008 (*sym_hash
)->root
.u
.def
.section
->owner
,
2009 (*sym_hash
)->root
.u
.def
.section
,
2010 (*sym_hash
)->root
.u
.def
.value
)))
2012 /* Try not to give this error too many times. */
2013 (*sym_hash
)->flags
&= ~XCOFF_MULTIPLY_DEFINED
;
2017 /* _bfd_generic_link_add_one_symbol may call the linker to
2018 generate an error message, and the linker may try to read
2019 the symbol table to give a good error. Right now, the
2020 line numbers are in an inconsistent state, since they are
2021 counted both in the real sections and in the new csects.
2022 We need to leave the count in the real sections so that
2023 the linker can report the line number of the error
2024 correctly, so temporarily clobber the link to the csects
2025 so that the linker will not try to read the line numbers
2026 a second time from the csects. */
2027 BFD_ASSERT (last_real
->next
== first_csect
);
2028 last_real
->next
= NULL
;
2029 flags
= (sym
.n_sclass
== C_EXT
? BSF_GLOBAL
: BSF_WEAK
);
2030 if (! (_bfd_generic_link_add_one_symbol
2031 (info
, abfd
, name
, flags
, section
, value
,
2033 (struct bfd_link_hash_entry
**) sym_hash
)))
2035 last_real
->next
= first_csect
;
2037 if (smtyp
== XTY_CM
)
2039 if ((*sym_hash
)->root
.type
!= bfd_link_hash_common
2040 || (*sym_hash
)->root
.u
.c
.p
->section
!= csect
)
2041 /* We don't need the common csect we just created. */
2044 (*sym_hash
)->root
.u
.c
.p
->alignment_power
2045 = csect
->alignment_power
;
2048 if (info
->output_bfd
->xvec
== abfd
->xvec
)
2052 if (smtyp
== XTY_ER
|| smtyp
== XTY_CM
)
2053 flag
= XCOFF_REF_REGULAR
;
2055 flag
= XCOFF_DEF_REGULAR
;
2056 (*sym_hash
)->flags
|= flag
;
2058 if ((*sym_hash
)->smclas
== XMC_UA
2059 || flag
== XCOFF_DEF_REGULAR
)
2060 (*sym_hash
)->smclas
= aux
.x_csect
.x_smclas
;
2064 if (smtyp
== XTY_ER
)
2065 *csect_cache
= section
;
2068 *csect_cache
= csect
;
2070 xcoff_section_data (abfd
, csect
)->last_symndx
2071 = (esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)) / symesz
;
2074 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2075 sym_hash
+= sym
.n_numaux
+ 1;
2076 csect_cache
+= sym
.n_numaux
+ 1;
2077 lineno_counts
+= sym
.n_numaux
+ 1;
2080 BFD_ASSERT (last_real
== NULL
|| last_real
->next
== first_csect
);
2082 /* Make sure that we have seen all the relocs. */
2083 for (o
= abfd
->sections
; o
!= first_csect
; o
= o
->next
)
2085 /* Reset the section size and the line number count, since the
2086 data is now attached to the csects. Don't reset the size of
2087 the .debug section, since we need to read it below in
2088 bfd_xcoff_size_dynamic_sections. */
2089 if (strcmp (bfd_get_section_name (abfd
, o
), ".debug") != 0)
2091 o
->lineno_count
= 0;
2093 if ((o
->flags
& SEC_RELOC
) != 0)
2096 struct internal_reloc
*rel
;
2097 asection
**rel_csect
;
2099 rel
= reloc_info
[o
->target_index
].relocs
;
2100 rel_csect
= reloc_info
[o
->target_index
].csects
;
2102 for (i
= 0; i
< o
->reloc_count
; i
++, rel
++, rel_csect
++)
2104 if (*rel_csect
== NULL
)
2106 (*_bfd_error_handler
)
2107 (_("%B: reloc %s:%d not in csect"),
2109 bfd_set_error (bfd_error_bad_value
);
2113 /* We identify all function symbols that are the target
2114 of a relocation, so that we can create glue code for
2115 functions imported from dynamic objects. */
2116 if (info
->output_bfd
->xvec
== abfd
->xvec
2117 && *rel_csect
!= bfd_und_section_ptr
2118 && obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
] != NULL
)
2120 struct xcoff_link_hash_entry
*h
;
2122 h
= obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
];
2123 /* If the symbol name starts with a period, it is
2124 the code of a function. If the symbol is
2125 currently undefined, then add an undefined symbol
2126 for the function descriptor. This should do no
2127 harm, because any regular object that defines the
2128 function should also define the function
2129 descriptor. It helps, because it means that we
2130 will identify the function descriptor with a
2131 dynamic object if a dynamic object defines it. */
2132 if (h
->root
.root
.string
[0] == '.'
2133 && h
->descriptor
== NULL
)
2135 struct xcoff_link_hash_entry
*hds
;
2136 struct bfd_link_hash_entry
*bh
;
2138 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2139 h
->root
.root
.string
+ 1,
2143 if (hds
->root
.type
== bfd_link_hash_new
)
2146 if (! (_bfd_generic_link_add_one_symbol
2147 (info
, abfd
, hds
->root
.root
.string
,
2148 (flagword
) 0, bfd_und_section_ptr
,
2149 (bfd_vma
) 0, NULL
, FALSE
,
2152 hds
= (struct xcoff_link_hash_entry
*) bh
;
2154 hds
->flags
|= XCOFF_DESCRIPTOR
;
2155 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
2156 hds
->descriptor
= h
;
2157 h
->descriptor
= hds
;
2159 if (h
->root
.root
.string
[0] == '.')
2160 h
->flags
|= XCOFF_CALLED
;
2164 free (reloc_info
[o
->target_index
].csects
);
2165 reloc_info
[o
->target_index
].csects
= NULL
;
2167 /* Reset SEC_RELOC and the reloc_count, since the reloc
2168 information is now attached to the csects. */
2169 o
->flags
&=~ SEC_RELOC
;
2172 /* If we are not keeping memory, free the reloc information. */
2173 if (! info
->keep_memory
2174 && coff_section_data (abfd
, o
) != NULL
2175 && coff_section_data (abfd
, o
)->relocs
!= NULL
2176 && ! coff_section_data (abfd
, o
)->keep_relocs
)
2178 free (coff_section_data (abfd
, o
)->relocs
);
2179 coff_section_data (abfd
, o
)->relocs
= NULL
;
2183 /* Free up the line numbers. FIXME: We could cache these
2184 somewhere for the final link, to avoid reading them again. */
2185 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2187 free (reloc_info
[o
->target_index
].linenos
);
2188 reloc_info
[o
->target_index
].linenos
= NULL
;
2194 obj_coff_keep_syms (abfd
) = keep_syms
;
2199 if (reloc_info
!= NULL
)
2201 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2203 if (reloc_info
[o
->target_index
].csects
!= NULL
)
2204 free (reloc_info
[o
->target_index
].csects
);
2205 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2206 free (reloc_info
[o
->target_index
].linenos
);
2210 obj_coff_keep_syms (abfd
) = keep_syms
;
2217 /* Add symbols from an XCOFF object file. */
2220 xcoff_link_add_object_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2222 if (! _bfd_coff_get_external_symbols (abfd
))
2224 if (! xcoff_link_add_symbols (abfd
, info
))
2226 if (! info
->keep_memory
)
2228 if (! _bfd_coff_free_symbols (abfd
))
2234 /* Look through the loader symbols to see if this dynamic object
2235 should be included in the link. The native linker uses the loader
2236 symbols, not the normal symbol table, so we do too. */
2239 xcoff_link_check_dynamic_ar_symbols (bfd
*abfd
,
2240 struct bfd_link_info
*info
,
2241 bfd_boolean
*pneeded
)
2245 struct internal_ldhdr ldhdr
;
2246 const char *strings
;
2247 bfd_byte
*elsym
, *elsymend
;
2251 lsec
= bfd_get_section_by_name (abfd
, ".loader");
2253 /* There are no symbols, so don't try to include it. */
2256 if (! xcoff_get_section_contents (abfd
, lsec
))
2258 contents
= coff_section_data (abfd
, lsec
)->contents
;
2260 bfd_xcoff_swap_ldhdr_in (abfd
, contents
, &ldhdr
);
2262 strings
= (char *) contents
+ ldhdr
.l_stoff
;
2264 elsym
= contents
+ bfd_xcoff_loader_symbol_offset (abfd
, &ldhdr
);
2266 elsymend
= elsym
+ ldhdr
.l_nsyms
* bfd_xcoff_ldsymsz (abfd
);
2267 for (; elsym
< elsymend
; elsym
+= bfd_xcoff_ldsymsz (abfd
))
2269 struct internal_ldsym ldsym
;
2270 char nambuf
[SYMNMLEN
+ 1];
2272 struct bfd_link_hash_entry
*h
;
2274 bfd_xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
2276 /* We are only interested in exported symbols. */
2277 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
2280 if (ldsym
._l
._l_l
._l_zeroes
== 0)
2281 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
2284 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
2285 nambuf
[SYMNMLEN
] = '\0';
2289 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2291 /* We are only interested in symbols that are currently
2292 undefined. At this point we know that we are using an XCOFF
2295 && h
->type
== bfd_link_hash_undefined
2296 && (((struct xcoff_link_hash_entry
*) h
)->flags
2297 & XCOFF_DEF_DYNAMIC
) == 0)
2299 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
2306 /* We do not need this shared object. */
2307 if (contents
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
2309 free (coff_section_data (abfd
, lsec
)->contents
);
2310 coff_section_data (abfd
, lsec
)->contents
= NULL
;
2316 /* Look through the symbols to see if this object file should be
2317 included in the link. */
2320 xcoff_link_check_ar_symbols (bfd
*abfd
,
2321 struct bfd_link_info
*info
,
2322 bfd_boolean
*pneeded
)
2324 bfd_size_type symesz
;
2330 if ((abfd
->flags
& DYNAMIC
) != 0
2331 && ! info
->static_link
2332 && info
->output_bfd
->xvec
== abfd
->xvec
)
2333 return xcoff_link_check_dynamic_ar_symbols (abfd
, info
, pneeded
);
2335 symesz
= bfd_coff_symesz (abfd
);
2336 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
2337 esym_end
= esym
+ obj_raw_syment_count (abfd
) * symesz
;
2338 while (esym
< esym_end
)
2340 struct internal_syment sym
;
2342 bfd_coff_swap_sym_in (abfd
, (void *) esym
, (void *) &sym
);
2344 if (EXTERN_SYM_P (sym
.n_sclass
) && sym
.n_scnum
!= N_UNDEF
)
2347 char buf
[SYMNMLEN
+ 1];
2348 struct bfd_link_hash_entry
*h
;
2350 /* This symbol is externally visible, and is defined by this
2352 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
2356 h
= bfd_link_hash_lookup (info
->hash
, name
, FALSE
, FALSE
, TRUE
);
2358 /* We are only interested in symbols that are currently
2359 undefined. If a symbol is currently known to be common,
2360 XCOFF linkers do not bring in an object file which
2361 defines it. We also don't bring in symbols to satisfy
2362 undefined references in shared objects. */
2364 && h
->type
== bfd_link_hash_undefined
2365 && (info
->output_bfd
->xvec
!= abfd
->xvec
2366 || (((struct xcoff_link_hash_entry
*) h
)->flags
2367 & XCOFF_DEF_DYNAMIC
) == 0))
2369 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
2376 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2379 /* We do not need this object file. */
2383 /* Check a single archive element to see if we need to include it in
2384 the link. *PNEEDED is set according to whether this element is
2385 needed in the link or not. This is called via
2386 _bfd_generic_link_add_archive_symbols. */
2389 xcoff_link_check_archive_element (bfd
*abfd
,
2390 struct bfd_link_info
*info
,
2391 bfd_boolean
*pneeded
)
2393 bfd_boolean keep_syms_p
;
2395 keep_syms_p
= (obj_coff_external_syms (abfd
) != NULL
);
2396 if (! _bfd_coff_get_external_symbols (abfd
))
2399 if (! xcoff_link_check_ar_symbols (abfd
, info
, pneeded
))
2404 if (! xcoff_link_add_symbols (abfd
, info
))
2406 if (info
->keep_memory
)
2412 if (! _bfd_coff_free_symbols (abfd
))
2419 /* Given an XCOFF BFD, add symbols to the global hash table as
2423 _bfd_xcoff_bfd_link_add_symbols (bfd
*abfd
, struct bfd_link_info
*info
)
2425 switch (bfd_get_format (abfd
))
2428 return xcoff_link_add_object_symbols (abfd
, info
);
2431 /* If the archive has a map, do the usual search. We then need
2432 to check the archive for dynamic objects, because they may not
2433 appear in the archive map even though they should, perhaps, be
2434 included. If the archive has no map, we just consider each object
2435 file in turn, since that apparently is what the AIX native linker
2437 if (bfd_has_map (abfd
))
2439 if (! (_bfd_generic_link_add_archive_symbols
2440 (abfd
, info
, xcoff_link_check_archive_element
)))
2447 member
= bfd_openr_next_archived_file (abfd
, NULL
);
2448 while (member
!= NULL
)
2450 if (bfd_check_format (member
, bfd_object
)
2451 && (info
->output_bfd
->xvec
== member
->xvec
)
2452 && (! bfd_has_map (abfd
) || (member
->flags
& DYNAMIC
) != 0))
2456 if (! xcoff_link_check_archive_element (member
, info
,
2460 member
->archive_pass
= -1;
2462 member
= bfd_openr_next_archived_file (abfd
, member
);
2469 bfd_set_error (bfd_error_wrong_format
);
2474 /* If symbol H has not been interpreted as a function descriptor,
2475 see whether it should be. Set up its descriptor information if so. */
2478 xcoff_find_function (struct bfd_link_info
*info
,
2479 struct xcoff_link_hash_entry
*h
)
2481 if ((h
->flags
& XCOFF_DESCRIPTOR
) == 0
2482 && h
->root
.root
.string
[0] != '.')
2485 struct xcoff_link_hash_entry
*hfn
;
2488 amt
= strlen (h
->root
.root
.string
) + 2;
2489 fnname
= bfd_malloc (amt
);
2493 strcpy (fnname
+ 1, h
->root
.root
.string
);
2494 hfn
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2495 fnname
, FALSE
, FALSE
, TRUE
);
2498 && hfn
->smclas
== XMC_PR
2499 && (hfn
->root
.type
== bfd_link_hash_defined
2500 || hfn
->root
.type
== bfd_link_hash_defweak
))
2502 h
->flags
|= XCOFF_DESCRIPTOR
;
2503 h
->descriptor
= hfn
;
2504 hfn
->descriptor
= h
;
2510 /* Return true if the given bfd contains at least one shared object. */
2513 xcoff_archive_contains_shared_object_p (struct bfd_link_info
*info
,
2516 struct xcoff_archive_info
*archive_info
;
2519 archive_info
= xcoff_get_archive_info (info
, archive
);
2520 if (!archive_info
->know_contains_shared_object_p
)
2522 member
= bfd_openr_next_archived_file (archive
, NULL
);
2523 while (member
!= NULL
&& (member
->flags
& DYNAMIC
) == 0)
2524 member
= bfd_openr_next_archived_file (archive
, member
);
2526 archive_info
->contains_shared_object_p
= (member
!= NULL
);
2527 archive_info
->know_contains_shared_object_p
= 1;
2529 return archive_info
->contains_shared_object_p
;
2532 /* Symbol H qualifies for export by -bexpfull. Return true if it also
2533 qualifies for export by -bexpall. */
2536 xcoff_covered_by_expall_p (struct xcoff_link_hash_entry
*h
)
2538 /* Exclude symbols beginning with '_'. */
2539 if (h
->root
.root
.string
[0] == '_')
2542 /* Exclude archive members that would otherwise be unreferenced. */
2543 if ((h
->flags
& XCOFF_MARK
) == 0
2544 && (h
->root
.type
== bfd_link_hash_defined
2545 || h
->root
.type
== bfd_link_hash_defweak
)
2546 && h
->root
.u
.def
.section
->owner
!= NULL
2547 && h
->root
.u
.def
.section
->owner
->my_archive
!= NULL
)
2553 /* Return true if symbol H qualifies for the forms of automatic export
2554 specified by AUTO_EXPORT_FLAGS. */
2557 xcoff_auto_export_p (struct bfd_link_info
*info
,
2558 struct xcoff_link_hash_entry
*h
,
2559 unsigned int auto_export_flags
)
2561 /* Don't automatically export things that were explicitly exported. */
2562 if ((h
->flags
& XCOFF_EXPORT
) != 0)
2565 /* Don't export things that we don't define. */
2566 if ((h
->flags
& XCOFF_DEF_REGULAR
) == 0)
2569 /* Don't export functions; export their descriptors instead. */
2570 if (h
->root
.root
.string
[0] == '.')
2573 /* We don't export a symbol which is being defined by an object
2574 included from an archive which contains a shared object. The
2575 rationale is that if an archive contains both an unshared and
2576 a shared object, then there must be some reason that the
2577 unshared object is unshared, and we don't want to start
2578 providing a shared version of it. In particular, this solves
2579 a bug involving the _savefNN set of functions. gcc will call
2580 those functions without providing a slot to restore the TOC,
2581 so it is essential that these functions be linked in directly
2582 and not from a shared object, which means that a shared
2583 object which also happens to link them in must not export
2584 them. This is confusing, but I haven't been able to think of
2585 a different approach. Note that the symbols can, of course,
2586 be exported explicitly. */
2587 if (h
->root
.type
== bfd_link_hash_defined
2588 || h
->root
.type
== bfd_link_hash_defweak
)
2592 owner
= h
->root
.u
.def
.section
->owner
;
2594 && owner
->my_archive
!= NULL
2595 && xcoff_archive_contains_shared_object_p (info
, owner
->my_archive
))
2599 /* Otherwise, all symbols are exported by -bexpfull. */
2600 if ((auto_export_flags
& XCOFF_EXPFULL
) != 0)
2603 /* Despite its name, -bexpall exports most but not all symbols. */
2604 if ((auto_export_flags
& XCOFF_EXPALL
) != 0
2605 && xcoff_covered_by_expall_p (h
))
2611 /* Return true if relocation REL needs to be copied to the .loader section.
2612 If REL is against a global symbol, H is that symbol, otherwise it
2616 xcoff_need_ldrel_p (struct bfd_link_info
*info
, struct internal_reloc
*rel
,
2617 struct xcoff_link_hash_entry
*h
)
2619 if (!xcoff_hash_table (info
)->loader_section
)
2622 switch (rel
->r_type
)
2629 /* We should never need a .loader reloc for a TOC-relative reloc. */
2633 /* In this case, relocations against defined symbols can be resolved
2636 || h
->root
.type
== bfd_link_hash_defined
2637 || h
->root
.type
== bfd_link_hash_defweak
2638 || h
->root
.type
== bfd_link_hash_common
)
2641 /* We will always provide a local definition of function symbols,
2642 even if we don't have one yet. */
2643 if ((h
->flags
& XCOFF_CALLED
) != 0)
2652 /* Absolute relocations against absolute symbols can be
2653 resolved statically. */
2655 && (h
->root
.type
== bfd_link_hash_defined
2656 || h
->root
.type
== bfd_link_hash_defweak
)
2657 && bfd_is_abs_section (h
->root
.u
.def
.section
))
2664 /* Mark a symbol as not being garbage, including the section in which
2667 static inline bfd_boolean
2668 xcoff_mark_symbol (struct bfd_link_info
*info
, struct xcoff_link_hash_entry
*h
)
2670 if ((h
->flags
& XCOFF_MARK
) != 0)
2673 h
->flags
|= XCOFF_MARK
;
2675 /* If we're marking an undefined symbol, try find some way of
2677 if (!info
->relocatable
2678 && (h
->flags
& XCOFF_IMPORT
) == 0
2679 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
2680 && (h
->root
.type
== bfd_link_hash_undefined
2681 || h
->root
.type
== bfd_link_hash_undefweak
))
2683 /* First check whether this symbol can be interpreted as an
2684 undefined function descriptor for a defined function symbol. */
2685 if (!xcoff_find_function (info
, h
))
2688 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
2689 && (h
->descriptor
->root
.type
== bfd_link_hash_defined
2690 || h
->descriptor
->root
.type
== bfd_link_hash_defweak
))
2692 /* This is a descriptor for a defined symbol, but the input
2693 objects have not defined the descriptor itself. Fill in
2694 the definition automatically.
2696 Note that we do this even if we found a dynamic definition
2697 of H. The local function definition logically overrides
2701 sec
= xcoff_hash_table (info
)->descriptor_section
;
2702 h
->root
.type
= bfd_link_hash_defined
;
2703 h
->root
.u
.def
.section
= sec
;
2704 h
->root
.u
.def
.value
= sec
->size
;
2706 h
->flags
|= XCOFF_DEF_REGULAR
;
2708 /* The size of the function descriptor depends on whether this
2709 is xcoff32 (12) or xcoff64 (24). */
2710 sec
->size
+= bfd_xcoff_function_descriptor_size (sec
->owner
);
2712 /* A function descriptor uses two relocs: one for the
2713 associated code, and one for the TOC address. */
2714 xcoff_hash_table (info
)->ldrel_count
+= 2;
2715 sec
->reloc_count
+= 2;
2717 /* Mark the function itself. */
2718 if (!xcoff_mark_symbol (info
, h
->descriptor
))
2721 /* Mark the TOC section, so that we get an anchor
2722 to relocate against. */
2723 if (!xcoff_mark (info
, xcoff_hash_table (info
)->toc_section
))
2726 /* We handle writing out the contents of the descriptor in
2727 xcoff_write_global_symbol. */
2729 else if ((h
->flags
& XCOFF_CALLED
) != 0)
2731 /* This is a function symbol for which we need to create
2734 struct xcoff_link_hash_entry
*hds
;
2736 /* Mark the descriptor (and its TOC section). */
2737 hds
= h
->descriptor
;
2738 BFD_ASSERT ((hds
->root
.type
== bfd_link_hash_undefined
2739 || hds
->root
.type
== bfd_link_hash_undefweak
)
2740 && (hds
->flags
& XCOFF_DEF_REGULAR
) == 0);
2741 if (!xcoff_mark_symbol (info
, hds
))
2744 /* Treat this symbol as undefined if the descriptor was. */
2745 if ((hds
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
2746 h
->flags
|= XCOFF_WAS_UNDEFINED
;
2748 /* Allocate room for the global linkage code itself. */
2749 sec
= xcoff_hash_table (info
)->linkage_section
;
2750 h
->root
.type
= bfd_link_hash_defined
;
2751 h
->root
.u
.def
.section
= sec
;
2752 h
->root
.u
.def
.value
= sec
->size
;
2754 h
->flags
|= XCOFF_DEF_REGULAR
;
2755 sec
->size
+= bfd_xcoff_glink_code_size (info
->output_bfd
);
2757 /* The global linkage code requires a TOC entry for the
2759 if (hds
->toc_section
== NULL
)
2764 xcoff32 uses 4 bytes in the toc.
2765 xcoff64 uses 8 bytes in the toc. */
2766 if (bfd_xcoff_is_xcoff64 (info
->output_bfd
))
2768 else if (bfd_xcoff_is_xcoff32 (info
->output_bfd
))
2773 /* Allocate room in the fallback TOC section. */
2774 hds
->toc_section
= xcoff_hash_table (info
)->toc_section
;
2775 hds
->u
.toc_offset
= hds
->toc_section
->size
;
2776 hds
->toc_section
->size
+= byte_size
;
2777 if (!xcoff_mark (info
, hds
->toc_section
))
2780 /* Allocate room for a static and dynamic R_TOC
2782 ++xcoff_hash_table (info
)->ldrel_count
;
2783 ++hds
->toc_section
->reloc_count
;
2785 /* Set the index to -2 to force this symbol to
2788 hds
->flags
|= XCOFF_SET_TOC
| XCOFF_LDREL
;
2791 else if ((h
->flags
& XCOFF_DEF_DYNAMIC
) == 0)
2793 /* Record that the symbol was undefined, then import it.
2794 -brtl links use a special fake import file. */
2795 h
->flags
|= XCOFF_WAS_UNDEFINED
| XCOFF_IMPORT
;
2796 if (xcoff_hash_table (info
)->rtld
)
2798 if (!xcoff_set_import_path (info
, h
, "", "..", ""))
2803 if (!xcoff_set_import_path (info
, h
, NULL
, NULL
, NULL
))
2809 if (h
->root
.type
== bfd_link_hash_defined
2810 || h
->root
.type
== bfd_link_hash_defweak
)
2814 hsec
= h
->root
.u
.def
.section
;
2815 if (! bfd_is_abs_section (hsec
)
2816 && (hsec
->flags
& SEC_MARK
) == 0)
2818 if (! xcoff_mark (info
, hsec
))
2823 if (h
->toc_section
!= NULL
2824 && (h
->toc_section
->flags
& SEC_MARK
) == 0)
2826 if (! xcoff_mark (info
, h
->toc_section
))
2833 /* Look for a symbol called NAME. If the symbol is defined, mark it.
2834 If the symbol exists, set FLAGS. */
2837 xcoff_mark_symbol_by_name (struct bfd_link_info
*info
,
2838 const char *name
, unsigned int flags
)
2840 struct xcoff_link_hash_entry
*h
;
2842 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
,
2843 FALSE
, FALSE
, TRUE
);
2847 if (h
->root
.type
== bfd_link_hash_defined
2848 || h
->root
.type
== bfd_link_hash_defweak
)
2850 if (!xcoff_mark (info
, h
->root
.u
.def
.section
))
2857 /* The mark phase of garbage collection. For a given section, mark
2858 it, and all the sections which define symbols to which it refers.
2859 Because this function needs to look at the relocs, we also count
2860 the number of relocs which need to be copied into the .loader
2864 xcoff_mark (struct bfd_link_info
*info
, asection
*sec
)
2866 if (bfd_is_abs_section (sec
)
2867 || (sec
->flags
& SEC_MARK
) != 0)
2870 sec
->flags
|= SEC_MARK
;
2872 if (sec
->owner
->xvec
== info
->output_bfd
->xvec
2873 && coff_section_data (sec
->owner
, sec
) != NULL
2874 && xcoff_section_data (sec
->owner
, sec
) != NULL
)
2876 struct xcoff_link_hash_entry
**syms
;
2877 struct internal_reloc
*rel
, *relend
;
2879 unsigned long i
, first
, last
;
2881 /* Mark all the symbols in this section. */
2882 syms
= obj_xcoff_sym_hashes (sec
->owner
);
2883 csects
= xcoff_data (sec
->owner
)->csects
;
2884 first
= xcoff_section_data (sec
->owner
, sec
)->first_symndx
;
2885 last
= xcoff_section_data (sec
->owner
, sec
)->last_symndx
;
2886 for (i
= first
; i
<= last
; i
++)
2887 if (csects
[i
] == sec
2889 && (syms
[i
]->flags
& XCOFF_MARK
) == 0)
2891 if (!xcoff_mark_symbol (info
, syms
[i
]))
2895 /* Look through the section relocs. */
2896 if ((sec
->flags
& SEC_RELOC
) != 0
2897 && sec
->reloc_count
> 0)
2899 rel
= xcoff_read_internal_relocs (sec
->owner
, sec
, TRUE
,
2903 relend
= rel
+ sec
->reloc_count
;
2904 for (; rel
< relend
; rel
++)
2906 struct xcoff_link_hash_entry
*h
;
2908 if ((unsigned int) rel
->r_symndx
2909 > obj_raw_syment_count (sec
->owner
))
2912 h
= obj_xcoff_sym_hashes (sec
->owner
)[rel
->r_symndx
];
2915 if ((h
->flags
& XCOFF_MARK
) == 0)
2917 if (!xcoff_mark_symbol (info
, h
))
2925 rsec
= xcoff_data (sec
->owner
)->csects
[rel
->r_symndx
];
2927 && (rsec
->flags
& SEC_MARK
) == 0)
2929 if (!xcoff_mark (info
, rsec
))
2934 /* See if this reloc needs to be copied into the .loader
2936 if (xcoff_need_ldrel_p (info
, rel
, h
))
2938 ++xcoff_hash_table (info
)->ldrel_count
;
2940 h
->flags
|= XCOFF_LDREL
;
2944 if (! info
->keep_memory
2945 && coff_section_data (sec
->owner
, sec
) != NULL
2946 && coff_section_data (sec
->owner
, sec
)->relocs
!= NULL
2947 && ! coff_section_data (sec
->owner
, sec
)->keep_relocs
)
2949 free (coff_section_data (sec
->owner
, sec
)->relocs
);
2950 coff_section_data (sec
->owner
, sec
)->relocs
= NULL
;
2958 /* Routines that are called after all the input files have been
2959 handled, but before the sections are laid out in memory. */
2961 /* The sweep phase of garbage collection. Remove all garbage
2965 xcoff_sweep (struct bfd_link_info
*info
)
2969 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
2973 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
2975 if ((o
->flags
& SEC_MARK
) == 0)
2977 /* Keep all sections from non-XCOFF input files. Keep
2978 special sections. Keep .debug sections for the
2980 if (sub
->xvec
!= info
->output_bfd
->xvec
2981 || o
== xcoff_hash_table (info
)->debug_section
2982 || o
== xcoff_hash_table (info
)->loader_section
2983 || o
== xcoff_hash_table (info
)->linkage_section
2984 || o
== xcoff_hash_table (info
)->descriptor_section
2985 || strcmp (o
->name
, ".debug") == 0)
2986 o
->flags
|= SEC_MARK
;
2997 /* Record the number of elements in a set. This is used to output the
2998 correct csect length. */
3001 bfd_xcoff_link_record_set (bfd
*output_bfd
,
3002 struct bfd_link_info
*info
,
3003 struct bfd_link_hash_entry
*harg
,
3006 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3007 struct xcoff_link_size_list
*n
;
3010 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3013 /* This will hardly ever be called. I don't want to burn four bytes
3014 per global symbol, so instead the size is kept on a linked list
3015 attached to the hash table. */
3017 n
= bfd_alloc (output_bfd
, amt
);
3020 n
->next
= xcoff_hash_table (info
)->size_list
;
3023 xcoff_hash_table (info
)->size_list
= n
;
3025 h
->flags
|= XCOFF_HAS_SIZE
;
3030 /* Import a symbol. */
3033 bfd_xcoff_import_symbol (bfd
*output_bfd
,
3034 struct bfd_link_info
*info
,
3035 struct bfd_link_hash_entry
*harg
,
3037 const char *imppath
,
3038 const char *impfile
,
3039 const char *impmember
,
3040 unsigned int syscall_flag
)
3042 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3044 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3047 /* A symbol name which starts with a period is the code for a
3048 function. If the symbol is undefined, then add an undefined
3049 symbol for the function descriptor, and import that instead. */
3050 if (h
->root
.root
.string
[0] == '.'
3051 && h
->root
.type
== bfd_link_hash_undefined
3052 && val
== (bfd_vma
) -1)
3054 struct xcoff_link_hash_entry
*hds
;
3056 hds
= h
->descriptor
;
3059 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3060 h
->root
.root
.string
+ 1,
3064 if (hds
->root
.type
== bfd_link_hash_new
)
3066 hds
->root
.type
= bfd_link_hash_undefined
;
3067 hds
->root
.u
.undef
.abfd
= h
->root
.u
.undef
.abfd
;
3069 hds
->flags
|= XCOFF_DESCRIPTOR
;
3070 BFD_ASSERT ((h
->flags
& XCOFF_DESCRIPTOR
) == 0);
3071 hds
->descriptor
= h
;
3072 h
->descriptor
= hds
;
3075 /* Now, if the descriptor is undefined, import the descriptor
3076 rather than the symbol we were told to import. FIXME: Is
3077 this correct in all cases? */
3078 if (hds
->root
.type
== bfd_link_hash_undefined
)
3082 h
->flags
|= (XCOFF_IMPORT
| syscall_flag
);
3084 if (val
!= (bfd_vma
) -1)
3086 if (h
->root
.type
== bfd_link_hash_defined
3087 && (! bfd_is_abs_section (h
->root
.u
.def
.section
)
3088 || h
->root
.u
.def
.value
!= val
))
3090 if (! ((*info
->callbacks
->multiple_definition
)
3091 (info
, h
->root
.root
.string
, h
->root
.u
.def
.section
->owner
,
3092 h
->root
.u
.def
.section
, h
->root
.u
.def
.value
,
3093 output_bfd
, bfd_abs_section_ptr
, val
)))
3097 h
->root
.type
= bfd_link_hash_defined
;
3098 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
3099 h
->root
.u
.def
.value
= val
;
3103 if (!xcoff_set_import_path (info
, h
, imppath
, impfile
, impmember
))
3109 /* Export a symbol. */
3112 bfd_xcoff_export_symbol (bfd
*output_bfd
,
3113 struct bfd_link_info
*info
,
3114 struct bfd_link_hash_entry
*harg
)
3116 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
3118 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3121 h
->flags
|= XCOFF_EXPORT
;
3123 /* FIXME: I'm not at all sure what syscall is supposed to mean, so
3124 I'm just going to ignore it until somebody explains it. */
3126 /* Make sure we don't garbage collect this symbol. */
3127 if (! xcoff_mark_symbol (info
, h
))
3130 /* If this is a function descriptor, make sure we don't garbage
3131 collect the associated function code. We normally don't have to
3132 worry about this, because the descriptor will be attached to a
3133 section with relocs, but if we are creating the descriptor
3134 ourselves those relocs will not be visible to the mark code. */
3135 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3137 if (! xcoff_mark_symbol (info
, h
->descriptor
))
3144 /* Count a reloc against a symbol. This is called for relocs
3145 generated by the linker script, typically for global constructors
3149 bfd_xcoff_link_count_reloc (bfd
*output_bfd
,
3150 struct bfd_link_info
*info
,
3153 struct xcoff_link_hash_entry
*h
;
3155 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3158 h
= ((struct xcoff_link_hash_entry
*)
3159 bfd_wrapped_link_hash_lookup (output_bfd
, info
, name
, FALSE
, FALSE
,
3163 (*_bfd_error_handler
) (_("%s: no such symbol"), name
);
3164 bfd_set_error (bfd_error_no_symbols
);
3168 h
->flags
|= XCOFF_REF_REGULAR
;
3169 if (xcoff_hash_table (info
)->loader_section
)
3171 h
->flags
|= XCOFF_LDREL
;
3172 ++xcoff_hash_table (info
)->ldrel_count
;
3175 /* Mark the symbol to avoid garbage collection. */
3176 if (! xcoff_mark_symbol (info
, h
))
3182 /* This function is called for each symbol to which the linker script
3186 bfd_xcoff_record_link_assignment (bfd
*output_bfd
,
3187 struct bfd_link_info
*info
,
3190 struct xcoff_link_hash_entry
*h
;
3192 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3195 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, TRUE
, TRUE
,
3200 h
->flags
|= XCOFF_DEF_REGULAR
;
3205 /* An xcoff_link_hash_traverse callback for which DATA points to an
3206 xcoff_loader_info. Mark all symbols that should be automatically
3210 xcoff_mark_auto_exports (struct xcoff_link_hash_entry
*h
, void *data
)
3212 struct xcoff_loader_info
*ldinfo
;
3214 ldinfo
= (struct xcoff_loader_info
*) data
;
3215 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3217 if (!xcoff_mark_symbol (ldinfo
->info
, h
))
3218 ldinfo
->failed
= TRUE
;
3223 /* Add a symbol to the .loader symbols, if necessary. */
3225 /* INPUT_BFD has an external symbol associated with hash table entry H
3226 and csect CSECT. Return true if INPUT_BFD defines H. */
3229 xcoff_final_definition_p (bfd
*input_bfd
, struct xcoff_link_hash_entry
*h
,
3232 switch (h
->root
.type
)
3234 case bfd_link_hash_defined
:
3235 case bfd_link_hash_defweak
:
3236 /* No input bfd owns absolute symbols. They are written by
3237 xcoff_write_global_symbol instead. */
3238 return (!bfd_is_abs_section (csect
)
3239 && h
->root
.u
.def
.section
== csect
);
3241 case bfd_link_hash_common
:
3242 return h
->root
.u
.c
.p
->section
->owner
== input_bfd
;
3244 case bfd_link_hash_undefined
:
3245 case bfd_link_hash_undefweak
:
3246 /* We can't treat undef.abfd as the owner because that bfd
3247 might be a dynamic object. Allow any bfd to claim it. */
3255 /* See if H should have a loader symbol associated with it. */
3258 xcoff_build_ldsym (struct xcoff_loader_info
*ldinfo
,
3259 struct xcoff_link_hash_entry
*h
)
3263 /* Warn if this symbol is exported but not defined. */
3264 if ((h
->flags
& XCOFF_EXPORT
) != 0
3265 && (h
->flags
& XCOFF_WAS_UNDEFINED
) != 0)
3267 (*_bfd_error_handler
)
3268 (_("warning: attempt to export undefined symbol `%s'"),
3269 h
->root
.root
.string
);
3273 /* We need to add a symbol to the .loader section if it is mentioned
3274 in a reloc which we are copying to the .loader section and it was
3275 not defined or common, or if it is the entry point, or if it is
3277 if (((h
->flags
& XCOFF_LDREL
) == 0
3278 || h
->root
.type
== bfd_link_hash_defined
3279 || h
->root
.type
== bfd_link_hash_defweak
3280 || h
->root
.type
== bfd_link_hash_common
)
3281 && (h
->flags
& XCOFF_ENTRY
) == 0
3282 && (h
->flags
& XCOFF_EXPORT
) == 0)
3285 /* We need to add this symbol to the .loader symbols. */
3287 BFD_ASSERT (h
->ldsym
== NULL
);
3288 amt
= sizeof (struct internal_ldsym
);
3289 h
->ldsym
= bfd_zalloc (ldinfo
->output_bfd
, amt
);
3290 if (h
->ldsym
== NULL
)
3292 ldinfo
->failed
= TRUE
;
3296 if ((h
->flags
& XCOFF_IMPORT
) != 0)
3298 /* Give imported descriptors class XMC_DS rather than XMC_UA. */
3299 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
3301 h
->ldsym
->l_ifile
= h
->ldindx
;
3304 /* The first 3 symbol table indices are reserved to indicate the
3305 data, text and bss sections. */
3306 h
->ldindx
= ldinfo
->ldsym_count
+ 3;
3308 ++ldinfo
->ldsym_count
;
3310 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
->output_bfd
, ldinfo
,
3311 h
->ldsym
, h
->root
.root
.string
))
3314 h
->flags
|= XCOFF_BUILT_LDSYM
;
3318 /* An xcoff_htab_traverse callback that is called for each symbol
3319 once garbage collection is complete. */
3322 xcoff_post_gc_symbol (struct xcoff_link_hash_entry
*h
, void * p
)
3324 struct xcoff_loader_info
*ldinfo
= (struct xcoff_loader_info
*) p
;
3326 if (h
->root
.type
== bfd_link_hash_warning
)
3327 h
= (struct xcoff_link_hash_entry
*) h
->root
.u
.i
.link
;
3329 /* __rtinit, this symbol has special handling. */
3330 if (h
->flags
& XCOFF_RTINIT
)
3333 /* If this is a final link, and the symbol was defined as a common
3334 symbol in a regular object file, and there was no definition in
3335 any dynamic object, then the linker will have allocated space for
3336 the symbol in a common section but the XCOFF_DEF_REGULAR flag
3337 will not have been set. */
3338 if (h
->root
.type
== bfd_link_hash_defined
3339 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
3340 && (h
->flags
& XCOFF_REF_REGULAR
) != 0
3341 && (h
->flags
& XCOFF_DEF_DYNAMIC
) == 0
3342 && (bfd_is_abs_section (h
->root
.u
.def
.section
)
3343 || (h
->root
.u
.def
.section
->owner
->flags
& DYNAMIC
) == 0))
3344 h
->flags
|= XCOFF_DEF_REGULAR
;
3346 /* We don't want to garbage collect symbols which are not defined in
3347 XCOFF files. This is a convenient place to mark them. */
3348 if (xcoff_hash_table (ldinfo
->info
)->gc
3349 && (h
->flags
& XCOFF_MARK
) == 0
3350 && (h
->root
.type
== bfd_link_hash_defined
3351 || h
->root
.type
== bfd_link_hash_defweak
)
3352 && (h
->root
.u
.def
.section
->owner
== NULL
3353 || (h
->root
.u
.def
.section
->owner
->xvec
3354 != ldinfo
->info
->output_bfd
->xvec
)))
3355 h
->flags
|= XCOFF_MARK
;
3357 /* Skip discarded symbols. */
3358 if (xcoff_hash_table (ldinfo
->info
)->gc
3359 && (h
->flags
& XCOFF_MARK
) == 0)
3362 /* If this is still a common symbol, and it wasn't garbage
3363 collected, we need to actually allocate space for it in the .bss
3365 if (h
->root
.type
== bfd_link_hash_common
3366 && h
->root
.u
.c
.p
->section
->size
== 0)
3368 BFD_ASSERT (bfd_is_com_section (h
->root
.u
.c
.p
->section
));
3369 h
->root
.u
.c
.p
->section
->size
= h
->root
.u
.c
.size
;
3372 if (xcoff_hash_table (ldinfo
->info
)->loader_section
)
3374 if (xcoff_auto_export_p (ldinfo
->info
, h
, ldinfo
->auto_export_flags
))
3375 h
->flags
|= XCOFF_EXPORT
;
3377 if (!xcoff_build_ldsym (ldinfo
, h
))
3384 /* INPUT_BFD includes XCOFF symbol ISYM, which is associated with linker
3385 hash table entry H and csect CSECT. AUX contains ISYM's auxillary
3386 csect information, if any. NAME is the function's name if the name
3387 is stored in the .debug section, otherwise it is null.
3389 Return 1 if we should include an appropriately-adjusted ISYM
3390 in the output file, 0 if we should discard ISYM, or -1 if an
3394 xcoff_keep_symbol_p (struct bfd_link_info
*info
, bfd
*input_bfd
,
3395 struct internal_syment
*isym
,
3396 union internal_auxent
*aux
,
3397 struct xcoff_link_hash_entry
*h
,
3398 asection
*csect
, const char *name
)
3402 /* If we are skipping this csect, we want to strip the symbol too. */
3406 /* Likewise if we garbage-collected the csect. */
3407 if (xcoff_hash_table (info
)->gc
3408 && !bfd_is_abs_section (csect
)
3409 && !bfd_is_und_section (csect
)
3410 && (csect
->flags
& SEC_MARK
) == 0)
3413 /* An XCOFF linker always removes C_STAT symbols. */
3414 if (isym
->n_sclass
== C_STAT
)
3417 /* We generate the TOC anchor separately. */
3418 if (isym
->n_sclass
== C_HIDEXT
3419 && aux
->x_csect
.x_smclas
== XMC_TC0
)
3422 /* If we are stripping all symbols, we want to discard this one. */
3423 if (info
->strip
== strip_all
)
3426 /* Discard symbols that are defined elsewhere. */
3427 if (EXTERN_SYM_P (isym
->n_sclass
))
3429 if ((h
->flags
& XCOFF_ALLOCATED
) != 0)
3431 if (!xcoff_final_definition_p (input_bfd
, h
, csect
))
3435 /* If we're discarding local symbols, check whether ISYM is local. */
3436 smtyp
= SMTYP_SMTYP (aux
->x_csect
.x_smtyp
);
3437 if (info
->discard
== discard_all
3438 && !EXTERN_SYM_P (isym
->n_sclass
)
3439 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
))
3442 /* If we're stripping debugging symbols, check whether ISYM is one. */
3443 if (info
->strip
== strip_debugger
3444 && isym
->n_scnum
== N_DEBUG
)
3447 /* If we are stripping symbols based on name, check how ISYM's
3448 name should be handled. */
3449 if (info
->strip
== strip_some
3450 || info
->discard
== discard_l
)
3452 char buf
[SYMNMLEN
+ 1];
3456 name
= _bfd_coff_internal_syment_name (input_bfd
, isym
, buf
);
3461 if (info
->strip
== strip_some
3462 && bfd_hash_lookup (info
->keep_hash
, name
, FALSE
, FALSE
) == NULL
)
3465 if (info
->discard
== discard_l
3466 && !EXTERN_SYM_P (isym
->n_sclass
)
3467 && (isym
->n_sclass
!= C_HIDEXT
|| smtyp
!= XTY_SD
)
3468 && bfd_is_local_label_name (input_bfd
, name
))
3475 /* Lay out the .loader section, filling in the header and the import paths.
3476 LIBPATH is as for bfd_xcoff_size_dynamic_sections. */
3479 xcoff_build_loader_section (struct xcoff_loader_info
*ldinfo
,
3480 const char *libpath
)
3483 struct xcoff_link_hash_table
*htab
;
3484 struct internal_ldhdr
*ldhdr
;
3485 struct xcoff_import_file
*fl
;
3486 bfd_size_type stoff
;
3487 size_t impsize
, impcount
;
3491 /* Work out the size of the import file names. Each import file ID
3492 consists of three null terminated strings: the path, the file
3493 name, and the archive member name. The first entry in the list
3494 of names is the path to use to find objects, which the linker has
3495 passed in as the libpath argument. For some reason, the path
3496 entry in the other import file names appears to always be empty. */
3497 output_bfd
= ldinfo
->output_bfd
;
3498 htab
= xcoff_hash_table (ldinfo
->info
);
3499 impsize
= strlen (libpath
) + 3;
3501 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3504 impsize
+= (strlen (fl
->path
)
3506 + strlen (fl
->member
)
3510 /* Set up the .loader section header. */
3511 ldhdr
= &htab
->ldhdr
;
3512 ldhdr
->l_version
= bfd_xcoff_ldhdr_version(output_bfd
);
3513 ldhdr
->l_nsyms
= ldinfo
->ldsym_count
;
3514 ldhdr
->l_nreloc
= htab
->ldrel_count
;
3515 ldhdr
->l_istlen
= impsize
;
3516 ldhdr
->l_nimpid
= impcount
;
3517 ldhdr
->l_impoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3518 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
)
3519 + ldhdr
->l_nreloc
* bfd_xcoff_ldrelsz (output_bfd
));
3520 ldhdr
->l_stlen
= ldinfo
->string_size
;
3521 stoff
= ldhdr
->l_impoff
+ impsize
;
3522 if (ldinfo
->string_size
== 0)
3525 ldhdr
->l_stoff
= stoff
;
3527 /* 64 bit elements to ldhdr
3528 The swap out routine for 32 bit will ignore them.
3529 Nothing fancy, symbols come after the header and relocs come
3531 ldhdr
->l_symoff
= bfd_xcoff_ldhdrsz (output_bfd
);
3532 ldhdr
->l_rldoff
= (bfd_xcoff_ldhdrsz (output_bfd
)
3533 + ldhdr
->l_nsyms
* bfd_xcoff_ldsymsz (output_bfd
));
3535 /* We now know the final size of the .loader section. Allocate
3537 lsec
= htab
->loader_section
;
3538 lsec
->size
= stoff
+ ldhdr
->l_stlen
;
3539 lsec
->contents
= bfd_zalloc (output_bfd
, lsec
->size
);
3540 if (lsec
->contents
== NULL
)
3543 /* Set up the header. */
3544 bfd_xcoff_swap_ldhdr_out (output_bfd
, ldhdr
, lsec
->contents
);
3546 /* Set up the import file names. */
3547 out
= (char *) lsec
->contents
+ ldhdr
->l_impoff
;
3548 strcpy (out
, libpath
);
3549 out
+= strlen (libpath
) + 1;
3552 for (fl
= htab
->imports
; fl
!= NULL
; fl
= fl
->next
)
3557 while ((*out
++ = *s
++) != '\0')
3560 while ((*out
++ = *s
++) != '\0')
3563 while ((*out
++ = *s
++) != '\0')
3567 BFD_ASSERT ((bfd_size_type
) ((bfd_byte
*) out
- lsec
->contents
) == stoff
);
3569 /* Set up the symbol string table. */
3570 if (ldinfo
->string_size
> 0)
3572 memcpy (out
, ldinfo
->strings
, ldinfo
->string_size
);
3573 free (ldinfo
->strings
);
3574 ldinfo
->strings
= NULL
;
3577 /* We can't set up the symbol table or the relocs yet, because we
3578 don't yet know the final position of the various sections. The
3579 .loader symbols are written out when the corresponding normal
3580 symbols are written out in xcoff_link_input_bfd or
3581 xcoff_write_global_symbol. The .loader relocs are written out
3582 when the corresponding normal relocs are handled in
3583 xcoff_link_input_bfd. */
3588 /* Build the .loader section. This is called by the XCOFF linker
3589 emulation before_allocation routine. We must set the size of the
3590 .loader section before the linker lays out the output file.
3591 LIBPATH is the library path to search for shared objects; this is
3592 normally built from the -L arguments passed to the linker. ENTRY
3593 is the name of the entry point symbol (the -e linker option).
3594 FILE_ALIGN is the alignment to use for sections within the file
3595 (the -H linker option). MAXSTACK is the maximum stack size (the
3596 -bmaxstack linker option). MAXDATA is the maximum data size (the
3597 -bmaxdata linker option). GC is whether to do garbage collection
3598 (the -bgc linker option). MODTYPE is the module type (the
3599 -bmodtype linker option). TEXTRO is whether the text section must
3600 be read only (the -btextro linker option). AUTO_EXPORT_FLAGS
3601 is a mask of XCOFF_EXPALL and XCOFF_EXPFULL. SPECIAL_SECTIONS
3602 is set by this routine to csects with magic names like _end. */
3605 bfd_xcoff_size_dynamic_sections (bfd
*output_bfd
,
3606 struct bfd_link_info
*info
,
3607 const char *libpath
,
3609 unsigned long file_align
,
3610 unsigned long maxstack
,
3611 unsigned long maxdata
,
3615 unsigned int auto_export_flags
,
3616 asection
**special_sections
,
3619 struct xcoff_loader_info ldinfo
;
3623 struct bfd_strtab_hash
*debug_strtab
;
3624 bfd_byte
*debug_contents
= NULL
;
3627 if (bfd_get_flavour (output_bfd
) != bfd_target_xcoff_flavour
)
3629 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3630 special_sections
[i
] = NULL
;
3634 ldinfo
.failed
= FALSE
;
3635 ldinfo
.output_bfd
= output_bfd
;
3637 ldinfo
.auto_export_flags
= auto_export_flags
;
3638 ldinfo
.ldsym_count
= 0;
3639 ldinfo
.string_size
= 0;
3640 ldinfo
.strings
= NULL
;
3641 ldinfo
.string_alc
= 0;
3643 xcoff_data (output_bfd
)->maxstack
= maxstack
;
3644 xcoff_data (output_bfd
)->maxdata
= maxdata
;
3645 xcoff_data (output_bfd
)->modtype
= modtype
;
3647 xcoff_hash_table (info
)->file_align
= file_align
;
3648 xcoff_hash_table (info
)->textro
= textro
;
3649 xcoff_hash_table (info
)->rtld
= rtld
;
3652 if (xcoff_hash_table (info
)->loader_section
3653 && (info
->init_function
|| info
->fini_function
|| rtld
))
3655 struct xcoff_link_hash_entry
*hsym
;
3656 struct internal_ldsym
*ldsym
;
3658 hsym
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
3659 "__rtinit", FALSE
, FALSE
, TRUE
);
3662 (*_bfd_error_handler
)
3663 (_("error: undefined symbol __rtinit"));
3667 xcoff_mark_symbol (info
, hsym
);
3668 hsym
->flags
|= (XCOFF_DEF_REGULAR
| XCOFF_RTINIT
);
3670 /* __rtinit initialized. */
3671 amt
= sizeof (* ldsym
);
3672 ldsym
= bfd_malloc (amt
);
3674 ldsym
->l_value
= 0; /* Will be filled in later. */
3675 ldsym
->l_scnum
= 2; /* Data section. */
3676 ldsym
->l_smtype
= XTY_SD
; /* Csect section definition. */
3677 ldsym
->l_smclas
= 5; /* .rw. */
3678 ldsym
->l_ifile
= 0; /* Special system loader symbol. */
3679 ldsym
->l_parm
= 0; /* NA. */
3681 /* Force __rtinit to be the first symbol in the loader symbol table
3682 See xcoff_build_ldsyms
3684 The first 3 symbol table indices are reserved to indicate the data,
3685 text and bss sections. */
3686 BFD_ASSERT (0 == ldinfo
.ldsym_count
);
3689 ldinfo
.ldsym_count
= 1;
3690 hsym
->ldsym
= ldsym
;
3692 if (! bfd_xcoff_put_ldsymbol_name (ldinfo
.output_bfd
, &ldinfo
,
3693 hsym
->ldsym
, hsym
->root
.root
.string
))
3696 /* This symbol is written out by xcoff_write_global_symbol
3697 Set stuff up so xcoff_write_global_symbol logic works. */
3698 hsym
->flags
|= XCOFF_DEF_REGULAR
| XCOFF_MARK
;
3699 hsym
->root
.type
= bfd_link_hash_defined
;
3700 hsym
->root
.u
.def
.value
= 0;
3703 /* Garbage collect unused sections. */
3704 if (info
->relocatable
|| !gc
)
3707 xcoff_hash_table (info
)->gc
= FALSE
;
3709 /* We still need to call xcoff_mark, in order to set ldrel_count
3711 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
3715 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3717 /* We shouldn't unconditionaly mark the TOC section.
3718 The output file should only have a TOC if either
3719 (a) one of the input files did or (b) we end up
3720 creating TOC references as part of the link process. */
3721 if (o
!= xcoff_hash_table (info
)->toc_section
3722 && (o
->flags
& SEC_MARK
) == 0)
3724 if (! xcoff_mark (info
, o
))
3733 && !xcoff_mark_symbol_by_name (info
, entry
, XCOFF_ENTRY
))
3735 if (info
->init_function
!= NULL
3736 && !xcoff_mark_symbol_by_name (info
, info
->init_function
, 0))
3738 if (info
->fini_function
!= NULL
3739 && !xcoff_mark_symbol_by_name (info
, info
->fini_function
, 0))
3741 if (auto_export_flags
!= 0)
3743 xcoff_link_hash_traverse (xcoff_hash_table (info
),
3744 xcoff_mark_auto_exports
, &ldinfo
);
3749 xcoff_hash_table (info
)->gc
= TRUE
;
3752 /* Return special sections to the caller. */
3753 for (i
= 0; i
< XCOFF_NUMBER_OF_SPECIAL_SECTIONS
; i
++)
3755 sec
= xcoff_hash_table (info
)->special_sections
[i
];
3759 && (sec
->flags
& SEC_MARK
) == 0)
3762 special_sections
[i
] = sec
;
3765 if (info
->input_bfds
== NULL
)
3766 /* I'm not sure what to do in this bizarre case. */
3769 xcoff_link_hash_traverse (xcoff_hash_table (info
), xcoff_post_gc_symbol
,
3774 if (xcoff_hash_table (info
)->loader_section
3775 && !xcoff_build_loader_section (&ldinfo
, libpath
))
3778 /* Allocate space for the magic sections. */
3779 sec
= xcoff_hash_table (info
)->linkage_section
;
3782 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3783 if (sec
->contents
== NULL
)
3786 sec
= xcoff_hash_table (info
)->toc_section
;
3789 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3790 if (sec
->contents
== NULL
)
3793 sec
= xcoff_hash_table (info
)->descriptor_section
;
3796 sec
->contents
= bfd_zalloc (output_bfd
, sec
->size
);
3797 if (sec
->contents
== NULL
)
3801 /* Now that we've done garbage collection, decide which symbols to keep,
3802 and figure out the contents of the .debug section. */
3803 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
3805 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
3808 bfd_size_type symcount
;
3811 unsigned int *lineno_counts
;
3812 struct xcoff_link_hash_entry
**sym_hash
;
3813 bfd_byte
*esym
, *esymend
;
3814 bfd_size_type symesz
;
3816 if (sub
->xvec
!= info
->output_bfd
->xvec
)
3819 if ((sub
->flags
& DYNAMIC
) != 0
3820 && !info
->static_link
)
3823 if (! _bfd_coff_get_external_symbols (sub
))
3826 symcount
= obj_raw_syment_count (sub
);
3827 debug_index
= bfd_zalloc (sub
, symcount
* sizeof (long));
3828 if (debug_index
== NULL
)
3830 xcoff_data (sub
)->debug_indices
= debug_index
;
3832 if (info
->strip
== strip_all
3833 || info
->strip
== strip_debugger
3834 || info
->discard
== discard_all
)
3835 /* We're stripping all debugging information, so there's no need
3836 to read SUB's .debug section. */
3840 /* Grab the contents of SUB's .debug section, if any. */
3841 subdeb
= bfd_get_section_by_name (sub
, ".debug");
3842 if (subdeb
!= NULL
&& subdeb
->size
> 0)
3844 /* We use malloc and copy the names into the debug
3845 stringtab, rather than bfd_alloc, because I expect
3846 that, when linking many files together, many of the
3847 strings will be the same. Storing the strings in the
3848 hash table should save space in this case. */
3849 if (!bfd_malloc_and_get_section (sub
, subdeb
, &debug_contents
))
3854 csectpp
= xcoff_data (sub
)->csects
;
3855 lineno_counts
= xcoff_data (sub
)->lineno_counts
;
3856 sym_hash
= obj_xcoff_sym_hashes (sub
);
3857 symesz
= bfd_coff_symesz (sub
);
3858 esym
= (bfd_byte
*) obj_coff_external_syms (sub
);
3859 esymend
= esym
+ symcount
* symesz
;
3861 while (esym
< esymend
)
3863 struct internal_syment sym
;
3864 union internal_auxent aux
;
3869 bfd_coff_swap_sym_in (sub
, esym
, &sym
);
3871 /* Read in the csect information, if any. */
3872 if (CSECT_SYM_P (sym
.n_sclass
))
3874 BFD_ASSERT (sym
.n_numaux
> 0);
3875 bfd_coff_swap_aux_in (sub
, esym
+ symesz
* sym
.n_numaux
,
3876 sym
.n_type
, sym
.n_sclass
,
3877 sym
.n_numaux
- 1, sym
.n_numaux
, &aux
);
3880 /* If this symbol's name is stored in the debug section,
3881 get a pointer to it. */
3882 if (debug_contents
!= NULL
3883 && sym
._n
._n_n
._n_zeroes
== 0
3884 && bfd_coff_symname_in_debug (sub
, &sym
))
3885 name
= (const char *) debug_contents
+ sym
._n
._n_n
._n_offset
;
3889 /* Decide whether to copy this symbol to the output file. */
3891 keep_p
= xcoff_keep_symbol_p (info
, sub
, &sym
, &aux
,
3892 *sym_hash
, csect
, name
);
3897 /* Use a debug_index of -2 to record that a symbol should
3902 /* See whether we should store the symbol name in the
3903 output .debug section. */
3908 indx
= _bfd_stringtab_add (debug_strtab
, name
, TRUE
, TRUE
);
3909 if (indx
== (bfd_size_type
) -1)
3911 *debug_index
= indx
;
3916 (*sym_hash
)->flags
|= XCOFF_ALLOCATED
;
3917 if (*lineno_counts
> 0)
3918 csect
->output_section
->lineno_count
+= *lineno_counts
;
3921 esym
+= (sym
.n_numaux
+ 1) * symesz
;
3922 csectpp
+= sym
.n_numaux
+ 1;
3923 sym_hash
+= sym
.n_numaux
+ 1;
3924 lineno_counts
+= sym
.n_numaux
+ 1;
3925 debug_index
+= sym
.n_numaux
+ 1;
3930 free (debug_contents
);
3931 debug_contents
= NULL
;
3933 /* Clear the size of subdeb, so that it is not included directly
3934 in the output file. */
3938 if (! info
->keep_memory
)
3940 if (! _bfd_coff_free_symbols (sub
))
3945 if (info
->strip
!= strip_all
)
3946 xcoff_hash_table (info
)->debug_section
->size
=
3947 _bfd_stringtab_size (debug_strtab
);
3952 if (ldinfo
.strings
!= NULL
)
3953 free (ldinfo
.strings
);
3954 if (debug_contents
!= NULL
)
3955 free (debug_contents
);
3960 bfd_xcoff_link_generate_rtinit (bfd
*abfd
,
3965 struct bfd_in_memory
*bim
;
3967 bim
= bfd_malloc ((bfd_size_type
) sizeof (* bim
));
3974 abfd
->link_next
= 0;
3975 abfd
->format
= bfd_object
;
3976 abfd
->iostream
= (void *) bim
;
3977 abfd
->flags
= BFD_IN_MEMORY
;
3978 abfd
->direction
= write_direction
;
3981 if (! bfd_xcoff_generate_rtinit (abfd
, init
, fini
, rtld
))
3984 /* need to reset to unknown or it will not be read back in correctly */
3985 abfd
->format
= bfd_unknown
;
3986 abfd
->direction
= read_direction
;
3992 /* Return the section that defines H. Return null if no section does. */
3995 xcoff_symbol_section (struct xcoff_link_hash_entry
*h
)
3997 switch (h
->root
.type
)
3999 case bfd_link_hash_defined
:
4000 case bfd_link_hash_defweak
:
4001 return h
->root
.u
.def
.section
;
4003 case bfd_link_hash_common
:
4004 return h
->root
.u
.c
.p
->section
;
4011 /* Add a .loader relocation for input relocation IREL. If the loader
4012 relocation should be against an output section, HSEC points to the
4013 input section that IREL is against, otherwise HSEC is null. H is the
4014 symbol that IREL is against, or null if it isn't against a global symbol.
4015 REFERENCE_BFD is the bfd to use in error messages about the relocation. */
4018 xcoff_create_ldrel (bfd
*output_bfd
, struct xcoff_final_link_info
*finfo
,
4019 asection
*output_section
, bfd
*reference_bfd
,
4020 struct internal_reloc
*irel
, asection
*hsec
,
4021 struct xcoff_link_hash_entry
*h
)
4023 struct internal_ldrel ldrel
;
4025 ldrel
.l_vaddr
= irel
->r_vaddr
;
4028 const char *secname
;
4030 secname
= hsec
->output_section
->name
;
4031 if (strcmp (secname
, ".text") == 0)
4033 else if (strcmp (secname
, ".data") == 0)
4035 else if (strcmp (secname
, ".bss") == 0)
4039 (*_bfd_error_handler
)
4040 (_("%B: loader reloc in unrecognized section `%s'"),
4041 reference_bfd
, secname
);
4042 bfd_set_error (bfd_error_nonrepresentable_section
);
4050 (*_bfd_error_handler
)
4051 (_("%B: `%s' in loader reloc but not loader sym"),
4052 reference_bfd
, h
->root
.root
.string
);
4053 bfd_set_error (bfd_error_bad_value
);
4056 ldrel
.l_symndx
= h
->ldindx
;
4059 ldrel
.l_symndx
= -(bfd_size_type
) 1;
4061 ldrel
.l_rtype
= (irel
->r_size
<< 8) | irel
->r_type
;
4062 ldrel
.l_rsecnm
= output_section
->target_index
;
4063 if (xcoff_hash_table (finfo
->info
)->textro
4064 && strcmp (output_section
->name
, ".text") == 0)
4066 (*_bfd_error_handler
)
4067 (_("%B: loader reloc in read-only section %A"),
4068 reference_bfd
, output_section
);
4069 bfd_set_error (bfd_error_invalid_operation
);
4072 bfd_xcoff_swap_ldrel_out (output_bfd
, &ldrel
, finfo
->ldrel
);
4073 finfo
->ldrel
+= bfd_xcoff_ldrelsz (output_bfd
);
4077 /* Link an input file into the linker output file. This function
4078 handles all the sections and relocations of the input file at once. */
4081 xcoff_link_input_bfd (struct xcoff_final_link_info
*finfo
,
4085 const char *strings
;
4086 bfd_size_type syment_base
;
4087 unsigned int n_tmask
;
4088 unsigned int n_btshft
;
4089 bfd_boolean copy
, hash
;
4090 bfd_size_type isymesz
;
4091 bfd_size_type osymesz
;
4092 bfd_size_type linesz
;
4095 struct xcoff_link_hash_entry
**sym_hash
;
4096 struct internal_syment
*isymp
;
4098 unsigned int *lineno_counts
;
4101 unsigned long output_index
;
4105 bfd_boolean keep_syms
;
4108 /* We can just skip DYNAMIC files, unless this is a static link. */
4109 if ((input_bfd
->flags
& DYNAMIC
) != 0
4110 && ! finfo
->info
->static_link
)
4113 /* Move all the symbols to the output file. */
4114 output_bfd
= finfo
->output_bfd
;
4116 syment_base
= obj_raw_syment_count (output_bfd
);
4117 isymesz
= bfd_coff_symesz (input_bfd
);
4118 osymesz
= bfd_coff_symesz (output_bfd
);
4119 linesz
= bfd_coff_linesz (input_bfd
);
4120 BFD_ASSERT (linesz
== bfd_coff_linesz (output_bfd
));
4122 n_tmask
= coff_data (input_bfd
)->local_n_tmask
;
4123 n_btshft
= coff_data (input_bfd
)->local_n_btshft
;
4125 /* Define macros so that ISFCN, et. al., macros work correctly. */
4126 #define N_TMASK n_tmask
4127 #define N_BTSHFT n_btshft
4130 if (! finfo
->info
->keep_memory
)
4133 if ((output_bfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
4136 if (! _bfd_coff_get_external_symbols (input_bfd
))
4139 /* Make one pass over the symbols and assign indices to symbols that
4140 we have decided to keep. Also use create .loader symbol information
4141 and update information in hash table entries. */
4142 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4143 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4144 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4145 csectpp
= xcoff_data (input_bfd
)->csects
;
4146 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4147 isymp
= finfo
->internal_syms
;
4148 indexp
= finfo
->sym_indices
;
4149 output_index
= syment_base
;
4150 while (esym
< esym_end
)
4152 union internal_auxent aux
;
4156 bfd_coff_swap_sym_in (input_bfd
, (void *) esym
, (void *) isymp
);
4158 /* Read in the csect information, if any. */
4159 if (CSECT_SYM_P (isymp
->n_sclass
))
4161 BFD_ASSERT (isymp
->n_numaux
> 0);
4162 bfd_coff_swap_aux_in (input_bfd
,
4163 (void *) (esym
+ isymesz
* isymp
->n_numaux
),
4164 isymp
->n_type
, isymp
->n_sclass
,
4165 isymp
->n_numaux
- 1, isymp
->n_numaux
,
4168 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
4171 /* If this symbol is in the .loader section, swap out the
4172 .loader symbol information. If this is an external symbol
4173 reference to a defined symbol, though, then wait until we get
4174 to the definition. */
4175 if (EXTERN_SYM_P (isymp
->n_sclass
)
4176 && *sym_hash
!= NULL
4177 && (*sym_hash
)->ldsym
!= NULL
4178 && xcoff_final_definition_p (input_bfd
, *sym_hash
, *csectpp
))
4180 struct xcoff_link_hash_entry
*h
;
4181 struct internal_ldsym
*ldsym
;
4185 if (isymp
->n_scnum
> 0)
4187 ldsym
->l_scnum
= (*csectpp
)->output_section
->target_index
;
4188 ldsym
->l_value
= (isymp
->n_value
4189 + (*csectpp
)->output_section
->vma
4190 + (*csectpp
)->output_offset
4195 ldsym
->l_scnum
= isymp
->n_scnum
;
4196 ldsym
->l_value
= isymp
->n_value
;
4199 ldsym
->l_smtype
= smtyp
;
4200 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
4201 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4202 || (h
->flags
& XCOFF_IMPORT
) != 0)
4203 ldsym
->l_smtype
|= L_IMPORT
;
4204 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
4205 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4206 || (h
->flags
& XCOFF_EXPORT
) != 0)
4207 ldsym
->l_smtype
|= L_EXPORT
;
4208 if ((h
->flags
& XCOFF_ENTRY
) != 0)
4209 ldsym
->l_smtype
|= L_ENTRY
;
4210 if (isymp
->n_sclass
== C_AIX_WEAKEXT
)
4211 ldsym
->l_smtype
|= L_WEAK
;
4213 ldsym
->l_smclas
= aux
.x_csect
.x_smclas
;
4215 if (ldsym
->l_ifile
== (bfd_size_type
) -1)
4217 else if (ldsym
->l_ifile
== 0)
4219 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
4225 if (h
->root
.type
== bfd_link_hash_defined
4226 || h
->root
.type
== bfd_link_hash_defweak
)
4227 impbfd
= h
->root
.u
.def
.section
->owner
;
4228 else if (h
->root
.type
== bfd_link_hash_undefined
4229 || h
->root
.type
== bfd_link_hash_undefweak
)
4230 impbfd
= h
->root
.u
.undef
.abfd
;
4238 BFD_ASSERT (impbfd
->xvec
== finfo
->output_bfd
->xvec
);
4239 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
4246 BFD_ASSERT (h
->ldindx
>= 0);
4247 bfd_xcoff_swap_ldsym_out (finfo
->output_bfd
, ldsym
,
4250 * bfd_xcoff_ldsymsz (finfo
->output_bfd
))));
4253 /* Fill in snentry now that we know the target_index. */
4254 if ((h
->flags
& XCOFF_ENTRY
) != 0
4255 && (h
->root
.type
== bfd_link_hash_defined
4256 || h
->root
.type
== bfd_link_hash_defweak
))
4258 xcoff_data (output_bfd
)->snentry
=
4259 h
->root
.u
.def
.section
->output_section
->target_index
;
4263 add
= 1 + isymp
->n_numaux
;
4265 if (*debug_index
== -2)
4266 /* We've decided to strip this symbol. */
4270 /* Assign the next unused index to this symbol. */
4271 *indexp
= output_index
;
4273 if (EXTERN_SYM_P (isymp
->n_sclass
))
4275 BFD_ASSERT (*sym_hash
!= NULL
);
4276 (*sym_hash
)->indx
= output_index
;
4279 /* If this is a symbol in the TOC which we may have merged
4280 (class XMC_TC), remember the symbol index of the TOC
4282 if (isymp
->n_sclass
== C_HIDEXT
4283 && aux
.x_csect
.x_smclas
== XMC_TC
4284 && *sym_hash
!= NULL
)
4286 BFD_ASSERT (((*sym_hash
)->flags
& XCOFF_SET_TOC
) == 0);
4287 BFD_ASSERT ((*sym_hash
)->toc_section
!= NULL
);
4288 (*sym_hash
)->u
.toc_indx
= output_index
;
4291 output_index
+= add
;
4294 esym
+= add
* isymesz
;
4300 for (--add
; add
> 0; --add
)
4304 /* Now write out the symbols that we decided to keep. */
4306 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4307 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4308 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4309 isymp
= finfo
->internal_syms
;
4310 indexp
= finfo
->sym_indices
;
4311 csectpp
= xcoff_data (input_bfd
)->csects
;
4312 lineno_counts
= xcoff_data (input_bfd
)->lineno_counts
;
4313 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4314 outsym
= finfo
->outsyms
;
4317 while (esym
< esym_end
)
4321 add
= 1 + isymp
->n_numaux
;
4324 esym
+= add
* isymesz
;
4327 struct internal_syment isym
;
4330 /* Adjust the symbol in order to output it. */
4332 if (isym
._n
._n_n
._n_zeroes
== 0
4333 && isym
._n
._n_n
._n_offset
!= 0)
4335 /* This symbol has a long name. Enter it in the string
4336 table we are building. If *debug_index != -1, the
4337 name has already been entered in the .debug section. */
4338 if (*debug_index
>= 0)
4339 isym
._n
._n_n
._n_offset
= *debug_index
;
4345 name
= _bfd_coff_internal_syment_name (input_bfd
, &isym
, NULL
);
4349 indx
= _bfd_stringtab_add (finfo
->strtab
, name
, hash
, copy
);
4350 if (indx
== (bfd_size_type
) -1)
4352 isym
._n
._n_n
._n_offset
= STRING_SIZE_SIZE
+ indx
;
4356 /* Make __rtinit C_HIDEXT rather than C_EXT. This avoids
4357 multiple definition problems when linking a shared object
4358 statically. (The native linker doesn't enter __rtinit into
4359 the normal table at all, but having a local symbol can make
4360 the objdump output easier to read.) */
4361 if (isym
.n_sclass
== C_EXT
4363 && ((*sym_hash
)->flags
& XCOFF_RTINIT
) != 0)
4364 isym
.n_sclass
= C_HIDEXT
;
4366 /* The value of a C_FILE symbol is the symbol index of the
4367 next C_FILE symbol. The value of the last C_FILE symbol
4368 is -1. We try to get this right, below, just before we
4369 write the symbols out, but in the general case we may
4370 have to write the symbol out twice. */
4371 if (isym
.n_sclass
== C_FILE
)
4373 if (finfo
->last_file_index
!= -1
4374 && finfo
->last_file
.n_value
!= (bfd_vma
) *indexp
)
4376 /* We must correct the value of the last C_FILE entry. */
4377 finfo
->last_file
.n_value
= *indexp
;
4378 if ((bfd_size_type
) finfo
->last_file_index
>= syment_base
)
4380 /* The last C_FILE symbol is in this input file. */
4381 bfd_coff_swap_sym_out (output_bfd
,
4382 (void *) &finfo
->last_file
,
4383 (void *) (finfo
->outsyms
4384 + ((finfo
->last_file_index
4390 /* We have already written out the last C_FILE
4391 symbol. We need to write it out again. We
4392 borrow *outsym temporarily. */
4395 bfd_coff_swap_sym_out (output_bfd
,
4396 (void *) &finfo
->last_file
,
4399 pos
= obj_sym_filepos (output_bfd
);
4400 pos
+= finfo
->last_file_index
* osymesz
;
4401 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4402 || (bfd_bwrite (outsym
, osymesz
, output_bfd
)
4408 finfo
->last_file_index
= *indexp
;
4409 finfo
->last_file
= isym
;
4412 /* The value of a C_BINCL or C_EINCL symbol is a file offset
4413 into the line numbers. We update the symbol values when
4414 we handle the line numbers. */
4415 if (isym
.n_sclass
== C_BINCL
4416 || isym
.n_sclass
== C_EINCL
)
4418 isym
.n_value
= finfo
->line_filepos
;
4421 /* The value of a C_BSTAT symbol is the symbol table
4422 index of the containing csect. */
4423 else if (isym
.n_sclass
== C_BSTAT
)
4427 indx
= isym
.n_value
;
4428 if (indx
< obj_raw_syment_count (input_bfd
))
4432 symindx
= finfo
->sym_indices
[indx
];
4436 isym
.n_value
= symindx
;
4439 else if (isym
.n_sclass
!= C_ESTAT
4440 && isym
.n_sclass
!= C_DECL
4441 && isym
.n_scnum
> 0)
4443 isym
.n_scnum
= (*csectpp
)->output_section
->target_index
;
4444 isym
.n_value
+= ((*csectpp
)->output_section
->vma
4445 + (*csectpp
)->output_offset
4449 /* Output the symbol. */
4450 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
4455 for (i
= 0; i
< isymp
->n_numaux
&& esym
< esym_end
; i
++)
4457 union internal_auxent aux
;
4459 bfd_coff_swap_aux_in (input_bfd
, (void *) esym
, isymp
->n_type
,
4460 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4463 if (isymp
->n_sclass
== C_FILE
)
4465 /* This is the file name (or some comment put in by
4466 the compiler). If it is long, we must put it in
4467 the string table. */
4468 if (aux
.x_file
.x_n
.x_zeroes
== 0
4469 && aux
.x_file
.x_n
.x_offset
!= 0)
4471 const char *filename
;
4474 BFD_ASSERT (aux
.x_file
.x_n
.x_offset
4475 >= STRING_SIZE_SIZE
);
4476 if (strings
== NULL
)
4478 strings
= _bfd_coff_read_string_table (input_bfd
);
4479 if (strings
== NULL
)
4482 filename
= strings
+ aux
.x_file
.x_n
.x_offset
;
4483 indx
= _bfd_stringtab_add (finfo
->strtab
, filename
,
4485 if (indx
== (bfd_size_type
) -1)
4487 aux
.x_file
.x_n
.x_offset
= STRING_SIZE_SIZE
+ indx
;
4490 else if (CSECT_SYM_P (isymp
->n_sclass
)
4491 && i
+ 1 == isymp
->n_numaux
)
4494 /* We don't support type checking. I don't know if
4496 aux
.x_csect
.x_parmhash
= 0;
4497 /* I don't think anybody uses these fields, but we'd
4498 better clobber them just in case. */
4499 aux
.x_csect
.x_stab
= 0;
4500 aux
.x_csect
.x_snstab
= 0;
4502 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_LD
)
4506 indx
= aux
.x_csect
.x_scnlen
.l
;
4507 if (indx
< obj_raw_syment_count (input_bfd
))
4511 symindx
= finfo
->sym_indices
[indx
];
4514 aux
.x_csect
.x_scnlen
.l
= 0;
4518 aux
.x_csect
.x_scnlen
.l
= symindx
;
4523 else if (isymp
->n_sclass
!= C_STAT
|| isymp
->n_type
!= T_NULL
)
4527 if (ISFCN (isymp
->n_type
)
4528 || ISTAG (isymp
->n_sclass
)
4529 || isymp
->n_sclass
== C_BLOCK
4530 || isymp
->n_sclass
== C_FCN
)
4532 indx
= aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
;
4534 && indx
< obj_raw_syment_count (input_bfd
))
4536 /* We look forward through the symbol for
4537 the index of the next symbol we are going
4538 to include. I don't know if this is
4540 while (finfo
->sym_indices
[indx
] < 0
4541 && indx
< obj_raw_syment_count (input_bfd
))
4543 if (indx
>= obj_raw_syment_count (input_bfd
))
4544 indx
= output_index
;
4546 indx
= finfo
->sym_indices
[indx
];
4547 aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= indx
;
4552 indx
= aux
.x_sym
.x_tagndx
.l
;
4553 if (indx
> 0 && indx
< obj_raw_syment_count (input_bfd
))
4557 symindx
= finfo
->sym_indices
[indx
];
4559 aux
.x_sym
.x_tagndx
.l
= 0;
4561 aux
.x_sym
.x_tagndx
.l
= symindx
;
4566 /* Copy over the line numbers, unless we are stripping
4567 them. We do this on a symbol by symbol basis in
4568 order to more easily handle garbage collection. */
4569 if (CSECT_SYM_P (isymp
->n_sclass
)
4571 && isymp
->n_numaux
> 1
4572 && ISFCN (isymp
->n_type
)
4573 && aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
4575 if (*lineno_counts
== 0)
4576 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= 0;
4579 asection
*enclosing
;
4580 unsigned int enc_count
;
4581 bfd_signed_vma linoff
;
4582 struct internal_lineno lin
;
4589 /* Read in the enclosing section's line-number
4590 information, if we haven't already. */
4592 enclosing
= xcoff_section_data (abfd
, o
)->enclosing
;
4593 enc_count
= xcoff_section_data (abfd
, o
)->lineno_count
;
4594 if (oline
!= enclosing
)
4596 pos
= enclosing
->line_filepos
;
4597 amt
= linesz
* enc_count
;
4598 if (bfd_seek (input_bfd
, pos
, SEEK_SET
) != 0
4599 || (bfd_bread (finfo
->linenos
, amt
, input_bfd
)
4605 /* Copy across the first entry, adjusting its
4607 linoff
= (aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
4608 - enclosing
->line_filepos
);
4609 linp
= finfo
->linenos
+ linoff
;
4610 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4611 lin
.l_addr
.l_symndx
= *indexp
;
4612 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4614 /* Copy the other entries, adjusting their addresses. */
4615 linpend
= linp
+ *lineno_counts
* linesz
;
4616 offset
= (o
->output_section
->vma
4619 for (linp
+= linesz
; linp
< linpend
; linp
+= linesz
)
4621 bfd_coff_swap_lineno_in (input_bfd
, linp
, &lin
);
4622 lin
.l_addr
.l_paddr
+= offset
;
4623 bfd_coff_swap_lineno_out (output_bfd
, &lin
, linp
);
4626 /* Write out the entries we've just processed. */
4627 pos
= (o
->output_section
->line_filepos
4628 + o
->output_section
->lineno_count
* linesz
);
4629 amt
= linesz
* *lineno_counts
;
4630 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4631 || bfd_bwrite (finfo
->linenos
+ linoff
,
4632 amt
, output_bfd
) != amt
)
4634 o
->output_section
->lineno_count
+= *lineno_counts
;
4636 /* Record the offset of the symbol's line numbers
4637 in the output file. */
4638 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= pos
;
4642 struct internal_syment
*iisp
, *iispend
;
4645 bfd_vma range_start
, range_end
;
4648 /* Update any C_BINCL or C_EINCL symbols
4649 that refer to a line number in the
4650 range we just output. */
4651 iisp
= finfo
->internal_syms
;
4652 iispend
= iisp
+ obj_raw_syment_count (input_bfd
);
4653 iindp
= finfo
->sym_indices
;
4654 oos
= finfo
->outsyms
;
4655 range_start
= enclosing
->line_filepos
+ linoff
;
4656 range_end
= range_start
+ *lineno_counts
* linesz
;
4657 while (iisp
< iispend
)
4660 && (iisp
->n_sclass
== C_BINCL
4661 || iisp
->n_sclass
== C_EINCL
)
4662 && iisp
->n_value
>= range_start
4663 && iisp
->n_value
< range_end
)
4665 struct internal_syment iis
;
4667 bfd_coff_swap_sym_in (output_bfd
, oos
, &iis
);
4668 iis
.n_value
= (iisp
->n_value
4671 bfd_coff_swap_sym_out (output_bfd
,
4676 iiadd
= 1 + iisp
->n_numaux
;
4678 oos
+= iiadd
* osymesz
;
4686 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, isymp
->n_type
,
4687 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4698 lineno_counts
+= add
;
4702 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
4703 symbol will be the first symbol in the next input file. In the
4704 normal case, this will save us from writing out the C_FILE symbol
4706 if (finfo
->last_file_index
!= -1
4707 && (bfd_size_type
) finfo
->last_file_index
>= syment_base
)
4709 finfo
->last_file
.n_value
= output_index
;
4710 bfd_coff_swap_sym_out (output_bfd
, (void *) &finfo
->last_file
,
4711 (void *) (finfo
->outsyms
4712 + ((finfo
->last_file_index
- syment_base
)
4716 /* Write the modified symbols to the output file. */
4717 if (outsym
> finfo
->outsyms
)
4719 file_ptr pos
= obj_sym_filepos (output_bfd
) + syment_base
* osymesz
;
4720 bfd_size_type amt
= outsym
- finfo
->outsyms
;
4721 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
4722 || bfd_bwrite (finfo
->outsyms
, amt
, output_bfd
) != amt
)
4725 BFD_ASSERT ((obj_raw_syment_count (output_bfd
)
4726 + (outsym
- finfo
->outsyms
) / osymesz
)
4729 obj_raw_syment_count (output_bfd
) = output_index
;
4732 /* Don't let the linker relocation routines discard the symbols. */
4733 keep_syms
= obj_coff_keep_syms (input_bfd
);
4734 obj_coff_keep_syms (input_bfd
) = TRUE
;
4736 /* Relocate the contents of each section. */
4737 for (o
= input_bfd
->sections
; o
!= NULL
; o
= o
->next
)
4741 if (! o
->linker_mark
)
4742 /* This section was omitted from the link. */
4745 if ((o
->flags
& SEC_HAS_CONTENTS
) == 0
4747 || (o
->flags
& SEC_IN_MEMORY
) != 0)
4750 /* We have set filepos correctly for the sections we created to
4751 represent csects, so bfd_get_section_contents should work. */
4752 if (coff_section_data (input_bfd
, o
) != NULL
4753 && coff_section_data (input_bfd
, o
)->contents
!= NULL
)
4754 contents
= coff_section_data (input_bfd
, o
)->contents
;
4757 bfd_size_type sz
= o
->rawsize
? o
->rawsize
: o
->size
;
4758 if (!bfd_get_section_contents (input_bfd
, o
, finfo
->contents
, 0, sz
))
4760 contents
= finfo
->contents
;
4763 if ((o
->flags
& SEC_RELOC
) != 0)
4766 struct internal_reloc
*internal_relocs
;
4767 struct internal_reloc
*irel
;
4769 struct internal_reloc
*irelend
;
4770 struct xcoff_link_hash_entry
**rel_hash
;
4773 /* Read in the relocs. */
4774 target_index
= o
->output_section
->target_index
;
4775 internal_relocs
= (xcoff_read_internal_relocs
4776 (input_bfd
, o
, FALSE
, finfo
->external_relocs
,
4778 (finfo
->section_info
[target_index
].relocs
4779 + o
->output_section
->reloc_count
)));
4780 if (internal_relocs
== NULL
)
4783 /* Call processor specific code to relocate the section
4785 if (! bfd_coff_relocate_section (output_bfd
, finfo
->info
,
4789 finfo
->internal_syms
,
4790 xcoff_data (input_bfd
)->csects
))
4793 offset
= o
->output_section
->vma
+ o
->output_offset
- o
->vma
;
4794 irel
= internal_relocs
;
4795 irelend
= irel
+ o
->reloc_count
;
4796 rel_hash
= (finfo
->section_info
[target_index
].rel_hashes
4797 + o
->output_section
->reloc_count
);
4798 for (; irel
< irelend
; irel
++, rel_hash
++)
4800 struct xcoff_link_hash_entry
*h
= NULL
;
4804 /* Adjust the reloc address and symbol index. */
4806 irel
->r_vaddr
+= offset
;
4808 r_symndx
= irel
->r_symndx
;
4813 h
= obj_xcoff_sym_hashes (input_bfd
)[r_symndx
];
4815 if (r_symndx
!= -1 && finfo
->info
->strip
!= strip_all
)
4818 && h
->smclas
!= XMC_TD
4819 && (irel
->r_type
== R_TOC
4820 || irel
->r_type
== R_GL
4821 || irel
->r_type
== R_TCL
4822 || irel
->r_type
== R_TRL
4823 || irel
->r_type
== R_TRLA
))
4825 /* This is a TOC relative reloc with a symbol
4826 attached. The symbol should be the one which
4827 this reloc is for. We want to make this
4828 reloc against the TOC address of the symbol,
4829 not the symbol itself. */
4830 BFD_ASSERT (h
->toc_section
!= NULL
);
4831 BFD_ASSERT ((h
->flags
& XCOFF_SET_TOC
) == 0);
4832 if (h
->u
.toc_indx
!= -1)
4833 irel
->r_symndx
= h
->u
.toc_indx
;
4836 struct xcoff_toc_rel_hash
*n
;
4837 struct xcoff_link_section_info
*si
;
4841 n
= bfd_alloc (finfo
->output_bfd
, amt
);
4844 si
= finfo
->section_info
+ target_index
;
4845 n
->next
= si
->toc_rel_hashes
;
4848 si
->toc_rel_hashes
= n
;
4853 /* This is a global symbol. */
4855 irel
->r_symndx
= h
->indx
;
4858 /* This symbol is being written at the end
4859 of the file, and we do not yet know the
4860 symbol index. We save the pointer to the
4861 hash table entry in the rel_hash list.
4862 We set the indx field to -2 to indicate
4863 that this symbol must not be stripped. */
4872 indx
= finfo
->sym_indices
[r_symndx
];
4876 struct internal_syment
*is
;
4878 /* Relocations against a TC0 TOC anchor are
4879 automatically transformed to be against
4880 the TOC anchor in the output file. */
4881 is
= finfo
->internal_syms
+ r_symndx
;
4882 if (is
->n_sclass
== C_HIDEXT
4883 && is
->n_numaux
> 0)
4886 union internal_auxent aux
;
4890 obj_coff_external_syms (input_bfd
))
4891 + ((r_symndx
+ is
->n_numaux
)
4893 bfd_coff_swap_aux_in (input_bfd
, auxptr
,
4894 is
->n_type
, is
->n_sclass
,
4898 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_SD
4899 && aux
.x_csect
.x_smclas
== XMC_TC0
)
4900 indx
= finfo
->toc_symindx
;
4905 irel
->r_symndx
= indx
;
4909 struct internal_syment
*is
;
4912 char buf
[SYMNMLEN
+ 1];
4914 /* This reloc is against a symbol we are
4915 stripping. It would be possible to handle
4916 this case, but I don't think it's worth it. */
4917 is
= finfo
->internal_syms
+ r_symndx
;
4919 name
= (_bfd_coff_internal_syment_name
4920 (input_bfd
, is
, buf
));
4925 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
4926 (finfo
->info
, name
, input_bfd
, o
,
4933 if (xcoff_need_ldrel_p (finfo
->info
, irel
, h
))
4940 sec
= xcoff_data (input_bfd
)->csects
[r_symndx
];
4942 sec
= xcoff_symbol_section (h
);
4943 if (!xcoff_create_ldrel (output_bfd
, finfo
,
4944 o
->output_section
, input_bfd
,
4950 o
->output_section
->reloc_count
+= o
->reloc_count
;
4953 /* Write out the modified section contents. */
4954 if (! bfd_set_section_contents (output_bfd
, o
->output_section
,
4955 contents
, (file_ptr
) o
->output_offset
,
4960 obj_coff_keep_syms (input_bfd
) = keep_syms
;
4962 if (! finfo
->info
->keep_memory
)
4964 if (! _bfd_coff_free_symbols (input_bfd
))
4974 /* Sort relocs by VMA. This is called via qsort. */
4977 xcoff_sort_relocs (const void * p1
, const void * p2
)
4979 const struct internal_reloc
*r1
= (const struct internal_reloc
*) p1
;
4980 const struct internal_reloc
*r2
= (const struct internal_reloc
*) p2
;
4982 if (r1
->r_vaddr
> r2
->r_vaddr
)
4984 else if (r1
->r_vaddr
< r2
->r_vaddr
)
4990 /* Return true if section SEC is a TOC section. */
4992 static inline bfd_boolean
4993 xcoff_toc_section_p (asection
*sec
)
4998 if (name
[0] == '.' && name
[1] == 't')
5002 if (name
[3] == '0' && name
[4] == 0)
5007 if (name
[2] == 'd' && name
[3] == 0)
5013 /* See if the link requires a TOC (it usually does!). If so, find a
5014 good place to put the TOC anchor csect, and write out the associated
5018 xcoff_find_tc0 (bfd
*output_bfd
, struct xcoff_final_link_info
*finfo
)
5020 bfd_vma toc_start
, toc_end
, start
, end
, best_address
;
5024 struct internal_syment irsym
;
5025 union internal_auxent iraux
;
5029 /* Set [TOC_START, TOC_END) to the range of the TOC. Record the
5030 index of a csect at the beginning of the TOC. */
5031 toc_start
= ~(bfd_vma
) 0;
5034 for (input_bfd
= finfo
->info
->input_bfds
;
5036 input_bfd
= input_bfd
->link_next
)
5037 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5038 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5040 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5041 if (toc_start
> start
)
5044 section_index
= sec
->output_section
->target_index
;
5047 end
= start
+ sec
->size
;
5052 /* There's no need for a TC0 symbol if we don't have a TOC. */
5053 if (toc_end
< toc_start
)
5055 xcoff_data (output_bfd
)->toc
= toc_start
;
5059 if (toc_end
- toc_start
< 0x8000)
5060 /* Every TOC csect can be accessed from TOC_START. */
5061 best_address
= toc_start
;
5064 /* Find the lowest TOC csect that is still within range of TOC_END. */
5065 best_address
= toc_end
;
5066 for (input_bfd
= finfo
->info
->input_bfds
;
5068 input_bfd
= input_bfd
->link_next
)
5069 for (sec
= input_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5070 if ((sec
->flags
& SEC_MARK
) != 0 && xcoff_toc_section_p (sec
))
5072 start
= sec
->output_section
->vma
+ sec
->output_offset
;
5073 if (start
< best_address
5074 && start
+ 0x8000 >= toc_end
)
5076 best_address
= start
;
5077 section_index
= sec
->output_section
->target_index
;
5081 /* Make sure that the start of the TOC is also within range. */
5082 if (best_address
> toc_start
+ 0x8000)
5084 (*_bfd_error_handler
)
5085 (_("TOC overflow: 0x%lx > 0x10000; try -mminimal-toc "
5087 (unsigned long) (toc_end
- toc_start
));
5088 bfd_set_error (bfd_error_file_too_big
);
5093 /* Record the chosen TOC value. */
5094 finfo
->toc_symindx
= obj_raw_syment_count (output_bfd
);
5095 xcoff_data (output_bfd
)->toc
= best_address
;
5096 xcoff_data (output_bfd
)->sntoc
= section_index
;
5098 /* Fill out the TC0 symbol. */
5099 if (!bfd_xcoff_put_symbol_name (output_bfd
, finfo
->strtab
, &irsym
, "TOC"))
5101 irsym
.n_value
= best_address
;
5102 irsym
.n_scnum
= section_index
;
5103 irsym
.n_sclass
= C_HIDEXT
;
5104 irsym
.n_type
= T_NULL
;
5106 bfd_coff_swap_sym_out (output_bfd
, &irsym
, finfo
->outsyms
);
5108 /* Fill out the auxillary csect information. */
5109 memset (&iraux
, 0, sizeof iraux
);
5110 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5111 iraux
.x_csect
.x_smclas
= XMC_TC0
;
5112 iraux
.x_csect
.x_scnlen
.l
= 0;
5113 bfd_coff_swap_aux_out (output_bfd
, &iraux
, T_NULL
, C_HIDEXT
, 0, 1,
5114 finfo
->outsyms
+ bfd_coff_symesz (output_bfd
));
5116 /* Write the contents to the file. */
5117 pos
= obj_sym_filepos (output_bfd
);
5118 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5119 size
= 2 * bfd_coff_symesz (output_bfd
);
5120 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5121 || bfd_bwrite (finfo
->outsyms
, size
, output_bfd
) != size
)
5123 obj_raw_syment_count (output_bfd
) += 2;
5128 /* Write out a non-XCOFF global symbol. */
5131 xcoff_write_global_symbol (struct xcoff_link_hash_entry
*h
, void * inf
)
5133 struct xcoff_final_link_info
*finfo
= (struct xcoff_final_link_info
*) inf
;
5136 struct internal_syment isym
;
5137 union internal_auxent aux
;
5142 output_bfd
= finfo
->output_bfd
;
5143 outsym
= finfo
->outsyms
;
5145 if (h
->root
.type
== bfd_link_hash_warning
)
5147 h
= (struct xcoff_link_hash_entry
*) h
->root
.u
.i
.link
;
5148 if (h
->root
.type
== bfd_link_hash_new
)
5152 /* If this symbol was garbage collected, just skip it. */
5153 if (xcoff_hash_table (finfo
->info
)->gc
5154 && (h
->flags
& XCOFF_MARK
) == 0)
5157 /* If we need a .loader section entry, write it out. */
5158 if (h
->ldsym
!= NULL
)
5160 struct internal_ldsym
*ldsym
;
5165 if (h
->root
.type
== bfd_link_hash_undefined
5166 || h
->root
.type
== bfd_link_hash_undefweak
)
5170 ldsym
->l_scnum
= N_UNDEF
;
5171 ldsym
->l_smtype
= XTY_ER
;
5172 impbfd
= h
->root
.u
.undef
.abfd
;
5175 else if (h
->root
.type
== bfd_link_hash_defined
5176 || h
->root
.type
== bfd_link_hash_defweak
)
5180 sec
= h
->root
.u
.def
.section
;
5181 ldsym
->l_value
= (sec
->output_section
->vma
5182 + sec
->output_offset
5183 + h
->root
.u
.def
.value
);
5184 ldsym
->l_scnum
= sec
->output_section
->target_index
;
5185 ldsym
->l_smtype
= XTY_SD
;
5186 impbfd
= sec
->owner
;
5192 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
5193 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5194 || (h
->flags
& XCOFF_IMPORT
) != 0)
5196 Import symbols are defined so the check above will make
5197 the l_smtype XTY_SD. But this is not correct, it should
5199 ldsym
->l_smtype
|= L_IMPORT
;
5201 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
5202 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5203 || (h
->flags
& XCOFF_EXPORT
) != 0)
5204 ldsym
->l_smtype
|= L_EXPORT
;
5206 if ((h
->flags
& XCOFF_ENTRY
) != 0)
5207 ldsym
->l_smtype
|= L_ENTRY
;
5209 if ((h
->flags
& XCOFF_RTINIT
) != 0)
5210 ldsym
->l_smtype
= XTY_SD
;
5212 ldsym
->l_smclas
= h
->smclas
;
5214 if (ldsym
->l_smtype
& L_IMPORT
)
5216 if ((h
->root
.type
== bfd_link_hash_defined
5217 || h
->root
.type
== bfd_link_hash_defweak
)
5218 && (h
->root
.u
.def
.value
!= 0))
5219 ldsym
->l_smclas
= XMC_XO
;
5221 else if ((h
->flags
& (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
)) ==
5222 (XCOFF_SYSCALL32
| XCOFF_SYSCALL64
))
5223 ldsym
->l_smclas
= XMC_SV3264
;
5225 else if (h
->flags
& XCOFF_SYSCALL32
)
5226 ldsym
->l_smclas
= XMC_SV
;
5228 else if (h
->flags
& XCOFF_SYSCALL64
)
5229 ldsym
->l_smclas
= XMC_SV64
;
5232 if (ldsym
->l_ifile
== -(bfd_size_type
) 1)
5236 else if (ldsym
->l_ifile
== 0)
5238 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
5240 else if (impbfd
== NULL
)
5244 BFD_ASSERT (impbfd
->xvec
== output_bfd
->xvec
);
5245 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
5251 BFD_ASSERT (h
->ldindx
>= 0);
5253 bfd_xcoff_swap_ldsym_out (output_bfd
, ldsym
,
5256 * bfd_xcoff_ldsymsz(finfo
->output_bfd
)));
5260 /* If this symbol needs global linkage code, write it out. */
5261 if (h
->root
.type
== bfd_link_hash_defined
5262 && (h
->root
.u
.def
.section
5263 == xcoff_hash_table (finfo
->info
)->linkage_section
))
5269 p
= h
->root
.u
.def
.section
->contents
+ h
->root
.u
.def
.value
;
5271 /* The first instruction in the global linkage code loads a
5272 specific TOC element. */
5273 tocoff
= (h
->descriptor
->toc_section
->output_section
->vma
5274 + h
->descriptor
->toc_section
->output_offset
5275 - xcoff_data (output_bfd
)->toc
);
5277 if ((h
->descriptor
->flags
& XCOFF_SET_TOC
) != 0)
5278 tocoff
+= h
->descriptor
->u
.toc_offset
;
5280 /* The first instruction in the glink code needs to be
5281 cooked to to hold the correct offset in the toc. The
5282 rest are just output raw. */
5283 bfd_put_32 (output_bfd
,
5284 bfd_xcoff_glink_code(output_bfd
, 0) | (tocoff
& 0xffff), p
);
5286 /* Start with i == 1 to get past the first instruction done above
5287 The /4 is because the glink code is in bytes and we are going
5289 for (i
= 1; i
< bfd_xcoff_glink_code_size(output_bfd
) / 4; i
++)
5290 bfd_put_32 (output_bfd
,
5291 (bfd_vma
) bfd_xcoff_glink_code(output_bfd
, i
),
5295 /* If we created a TOC entry for this symbol, write out the required
5297 if ((h
->flags
& XCOFF_SET_TOC
) != 0)
5302 struct internal_reloc
*irel
;
5303 struct internal_syment irsym
;
5304 union internal_auxent iraux
;
5306 tocsec
= h
->toc_section
;
5307 osec
= tocsec
->output_section
;
5308 oindx
= osec
->target_index
;
5309 irel
= finfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5310 irel
->r_vaddr
= (osec
->vma
5311 + tocsec
->output_offset
5315 irel
->r_symndx
= h
->indx
;
5319 irel
->r_symndx
= obj_raw_syment_count (output_bfd
);
5322 BFD_ASSERT (h
->ldindx
>= 0);
5324 /* Initialize the aux union here instead of closer to when it is
5325 written out below because the length of the csect depends on
5326 whether the output is 32 or 64 bit. */
5327 memset (&iraux
, 0, sizeof iraux
);
5328 iraux
.x_csect
.x_smtyp
= XTY_SD
;
5329 /* iraux.x_csect.x_scnlen.l = 4 or 8, see below. */
5330 iraux
.x_csect
.x_smclas
= XMC_TC
;
5332 /* 32 bit uses a 32 bit R_POS to do the relocations
5333 64 bit uses a 64 bit R_POS to do the relocations
5335 Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit
5337 Which one is determined by the backend. */
5338 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5341 iraux
.x_csect
.x_scnlen
.l
= 8;
5343 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5346 iraux
.x_csect
.x_scnlen
.l
= 4;
5351 irel
->r_type
= R_POS
;
5352 finfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5353 ++osec
->reloc_count
;
5355 if (!xcoff_create_ldrel (output_bfd
, finfo
, osec
,
5356 output_bfd
, irel
, NULL
, h
))
5359 /* We need to emit a symbol to define a csect which holds
5361 if (finfo
->info
->strip
!= strip_all
)
5363 result
= bfd_xcoff_put_symbol_name (output_bfd
, finfo
->strtab
,
5364 &irsym
, h
->root
.root
.string
);
5368 irsym
.n_value
= irel
->r_vaddr
;
5369 irsym
.n_scnum
= osec
->target_index
;
5370 irsym
.n_sclass
= C_HIDEXT
;
5371 irsym
.n_type
= T_NULL
;
5374 bfd_coff_swap_sym_out (output_bfd
, (void *) &irsym
, (void *) outsym
);
5375 outsym
+= bfd_coff_symesz (output_bfd
);
5377 /* Note : iraux is initialized above. */
5378 bfd_coff_swap_aux_out (output_bfd
, (void *) &iraux
, T_NULL
, C_HIDEXT
,
5379 0, 1, (void *) outsym
);
5380 outsym
+= bfd_coff_auxesz (output_bfd
);
5384 /* We aren't going to write out the symbols below, so we
5385 need to write them out now. */
5386 pos
= obj_sym_filepos (output_bfd
);
5387 pos
+= (obj_raw_syment_count (output_bfd
)
5388 * bfd_coff_symesz (output_bfd
));
5389 amt
= outsym
- finfo
->outsyms
;
5390 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5391 || bfd_bwrite (finfo
->outsyms
, amt
, output_bfd
) != amt
)
5393 obj_raw_syment_count (output_bfd
) +=
5394 (outsym
- finfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5396 outsym
= finfo
->outsyms
;
5401 /* If this symbol is a specially defined function descriptor, write
5402 it out. The first word is the address of the function code
5403 itself, the second word is the address of the TOC, and the third
5407 The addresses for the 32 bit will take 4 bytes and the addresses
5408 for 64 bit will take 8 bytes. Similar for the relocs. This type
5409 of logic was also done above to create a TOC entry in
5410 xcoff_write_global_symbol. */
5411 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
5412 && h
->root
.type
== bfd_link_hash_defined
5413 && (h
->root
.u
.def
.section
5414 == xcoff_hash_table (finfo
->info
)->descriptor_section
))
5420 struct xcoff_link_hash_entry
*hentry
;
5422 struct internal_reloc
*irel
;
5424 unsigned int reloc_size
, byte_size
;
5426 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5431 else if (bfd_xcoff_is_xcoff32 (output_bfd
))
5439 sec
= h
->root
.u
.def
.section
;
5440 osec
= sec
->output_section
;
5441 oindx
= osec
->target_index
;
5442 p
= sec
->contents
+ h
->root
.u
.def
.value
;
5444 hentry
= h
->descriptor
;
5445 BFD_ASSERT (hentry
!= NULL
5446 && (hentry
->root
.type
== bfd_link_hash_defined
5447 || hentry
->root
.type
== bfd_link_hash_defweak
));
5448 esec
= hentry
->root
.u
.def
.section
;
5450 irel
= finfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5451 irel
->r_vaddr
= (osec
->vma
5452 + sec
->output_offset
5453 + h
->root
.u
.def
.value
);
5454 irel
->r_symndx
= esec
->output_section
->target_index
;
5455 irel
->r_type
= R_POS
;
5456 irel
->r_size
= reloc_size
;
5457 finfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5458 ++osec
->reloc_count
;
5460 if (!xcoff_create_ldrel (output_bfd
, finfo
, osec
,
5461 output_bfd
, irel
, esec
, NULL
))
5464 /* There are three items to write out,
5465 the address of the code
5466 the address of the toc anchor
5467 the environment pointer.
5468 We are ignoring the environment pointer. So set it to zero. */
5469 if (bfd_xcoff_is_xcoff64 (output_bfd
))
5471 bfd_put_64 (output_bfd
,
5472 (esec
->output_section
->vma
+ esec
->output_offset
5473 + hentry
->root
.u
.def
.value
),
5475 bfd_put_64 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 8);
5476 bfd_put_64 (output_bfd
, (bfd_vma
) 0, p
+ 16);
5481 This logic was already called above so the error case where
5482 the backend is neither has already been checked. */
5483 bfd_put_32 (output_bfd
,
5484 (esec
->output_section
->vma
+ esec
->output_offset
5485 + hentry
->root
.u
.def
.value
),
5487 bfd_put_32 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 4);
5488 bfd_put_32 (output_bfd
, (bfd_vma
) 0, p
+ 8);
5491 tsec
= coff_section_from_bfd_index (output_bfd
,
5492 xcoff_data (output_bfd
)->sntoc
);
5495 irel
->r_vaddr
= (osec
->vma
5496 + sec
->output_offset
5497 + h
->root
.u
.def
.value
5499 irel
->r_symndx
= tsec
->output_section
->target_index
;
5500 irel
->r_type
= R_POS
;
5501 irel
->r_size
= reloc_size
;
5502 finfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5503 ++osec
->reloc_count
;
5505 if (!xcoff_create_ldrel (output_bfd
, finfo
, osec
,
5506 output_bfd
, irel
, tsec
, NULL
))
5510 if (h
->indx
>= 0 || finfo
->info
->strip
== strip_all
)
5512 BFD_ASSERT (outsym
== finfo
->outsyms
);
5517 && (finfo
->info
->strip
== strip_all
5518 || (finfo
->info
->strip
== strip_some
5519 && bfd_hash_lookup (finfo
->info
->keep_hash
, h
->root
.root
.string
,
5520 FALSE
, FALSE
) == NULL
)))
5522 BFD_ASSERT (outsym
== finfo
->outsyms
);
5527 && (h
->flags
& (XCOFF_REF_REGULAR
| XCOFF_DEF_REGULAR
)) == 0)
5529 BFD_ASSERT (outsym
== finfo
->outsyms
);
5533 memset (&aux
, 0, sizeof aux
);
5535 h
->indx
= obj_raw_syment_count (output_bfd
);
5537 result
= bfd_xcoff_put_symbol_name (output_bfd
, finfo
->strtab
, &isym
,
5538 h
->root
.root
.string
);
5542 if (h
->root
.type
== bfd_link_hash_undefined
5543 || h
->root
.type
== bfd_link_hash_undefweak
)
5546 isym
.n_scnum
= N_UNDEF
;
5547 if (h
->root
.type
== bfd_link_hash_undefweak
5548 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5549 isym
.n_sclass
= C_WEAKEXT
;
5551 isym
.n_sclass
= C_EXT
;
5552 aux
.x_csect
.x_smtyp
= XTY_ER
;
5554 else if ((h
->root
.type
== bfd_link_hash_defined
5555 || h
->root
.type
== bfd_link_hash_defweak
)
5556 && h
->smclas
== XMC_XO
)
5558 BFD_ASSERT (bfd_is_abs_section (h
->root
.u
.def
.section
));
5559 isym
.n_value
= h
->root
.u
.def
.value
;
5560 isym
.n_scnum
= N_UNDEF
;
5561 if (h
->root
.type
== bfd_link_hash_undefweak
5562 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5563 isym
.n_sclass
= C_WEAKEXT
;
5565 isym
.n_sclass
= C_EXT
;
5566 aux
.x_csect
.x_smtyp
= XTY_ER
;
5568 else if (h
->root
.type
== bfd_link_hash_defined
5569 || h
->root
.type
== bfd_link_hash_defweak
)
5571 struct xcoff_link_size_list
*l
;
5573 isym
.n_value
= (h
->root
.u
.def
.section
->output_section
->vma
5574 + h
->root
.u
.def
.section
->output_offset
5575 + h
->root
.u
.def
.value
);
5576 if (bfd_is_abs_section (h
->root
.u
.def
.section
->output_section
))
5577 isym
.n_scnum
= N_ABS
;
5579 isym
.n_scnum
= h
->root
.u
.def
.section
->output_section
->target_index
;
5580 isym
.n_sclass
= C_HIDEXT
;
5581 aux
.x_csect
.x_smtyp
= XTY_SD
;
5583 if ((h
->flags
& XCOFF_HAS_SIZE
) != 0)
5585 for (l
= xcoff_hash_table (finfo
->info
)->size_list
;
5591 aux
.x_csect
.x_scnlen
.l
= l
->size
;
5597 else if (h
->root
.type
== bfd_link_hash_common
)
5599 isym
.n_value
= (h
->root
.u
.c
.p
->section
->output_section
->vma
5600 + h
->root
.u
.c
.p
->section
->output_offset
);
5601 isym
.n_scnum
= h
->root
.u
.c
.p
->section
->output_section
->target_index
;
5602 isym
.n_sclass
= C_EXT
;
5603 aux
.x_csect
.x_smtyp
= XTY_CM
;
5604 aux
.x_csect
.x_scnlen
.l
= h
->root
.u
.c
.size
;
5609 isym
.n_type
= T_NULL
;
5612 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5613 outsym
+= bfd_coff_symesz (output_bfd
);
5615 aux
.x_csect
.x_smclas
= h
->smclas
;
5616 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, isym
.n_sclass
, 0, 1,
5618 outsym
+= bfd_coff_auxesz (output_bfd
);
5620 if ((h
->root
.type
== bfd_link_hash_defined
5621 || h
->root
.type
== bfd_link_hash_defweak
)
5622 && h
->smclas
!= XMC_XO
)
5624 /* We just output an SD symbol. Now output an LD symbol. */
5627 if (h
->root
.type
== bfd_link_hash_undefweak
5628 && C_WEAKEXT
== C_AIX_WEAKEXT
)
5629 isym
.n_sclass
= C_WEAKEXT
;
5631 isym
.n_sclass
= C_EXT
;
5632 bfd_coff_swap_sym_out (output_bfd
, (void *) &isym
, (void *) outsym
);
5633 outsym
+= bfd_coff_symesz (output_bfd
);
5635 aux
.x_csect
.x_smtyp
= XTY_LD
;
5636 aux
.x_csect
.x_scnlen
.l
= obj_raw_syment_count (output_bfd
);
5637 bfd_coff_swap_aux_out (output_bfd
, (void *) &aux
, T_NULL
, C_EXT
, 0, 1,
5639 outsym
+= bfd_coff_auxesz (output_bfd
);
5642 pos
= obj_sym_filepos (output_bfd
);
5643 pos
+= obj_raw_syment_count (output_bfd
) * bfd_coff_symesz (output_bfd
);
5644 amt
= outsym
- finfo
->outsyms
;
5645 if (bfd_seek (output_bfd
, pos
, SEEK_SET
) != 0
5646 || bfd_bwrite (finfo
->outsyms
, amt
, output_bfd
) != amt
)
5648 obj_raw_syment_count (output_bfd
) +=
5649 (outsym
- finfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5654 /* Handle a link order which is supposed to generate a reloc. */
5657 xcoff_reloc_link_order (bfd
*output_bfd
,
5658 struct xcoff_final_link_info
*finfo
,
5659 asection
*output_section
,
5660 struct bfd_link_order
*link_order
)
5662 reloc_howto_type
*howto
;
5663 struct xcoff_link_hash_entry
*h
;
5667 struct internal_reloc
*irel
;
5668 struct xcoff_link_hash_entry
**rel_hash_ptr
;
5670 if (link_order
->type
== bfd_section_reloc_link_order
)
5671 /* We need to somehow locate a symbol in the right section. The
5672 symbol must either have a value of zero, or we must adjust
5673 the addend by the value of the symbol. FIXME: Write this
5674 when we need it. The old linker couldn't handle this anyhow. */
5677 howto
= bfd_reloc_type_lookup (output_bfd
, link_order
->u
.reloc
.p
->reloc
);
5680 bfd_set_error (bfd_error_bad_value
);
5684 h
= ((struct xcoff_link_hash_entry
*)
5685 bfd_wrapped_link_hash_lookup (output_bfd
, finfo
->info
,
5686 link_order
->u
.reloc
.p
->u
.name
,
5687 FALSE
, FALSE
, TRUE
));
5690 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
5691 (finfo
->info
, link_order
->u
.reloc
.p
->u
.name
, NULL
, NULL
, (bfd_vma
) 0)))
5696 hsec
= xcoff_symbol_section (h
);
5697 if (h
->root
.type
== bfd_link_hash_defined
5698 || h
->root
.type
== bfd_link_hash_defweak
)
5699 hval
= h
->root
.u
.def
.value
;
5703 addend
= link_order
->u
.reloc
.p
->addend
;
5705 addend
+= (hsec
->output_section
->vma
5706 + hsec
->output_offset
5713 bfd_reloc_status_type rstat
;
5716 size
= bfd_get_reloc_size (howto
);
5717 buf
= bfd_zmalloc (size
);
5721 rstat
= _bfd_relocate_contents (howto
, output_bfd
, addend
, buf
);
5727 case bfd_reloc_outofrange
:
5729 case bfd_reloc_overflow
:
5730 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
5731 (finfo
->info
, NULL
, link_order
->u
.reloc
.p
->u
.name
,
5732 howto
->name
, addend
, NULL
, NULL
, (bfd_vma
) 0)))
5739 ok
= bfd_set_section_contents (output_bfd
, output_section
, (void *) buf
,
5740 (file_ptr
) link_order
->offset
, size
);
5746 /* Store the reloc information in the right place. It will get
5747 swapped and written out at the end of the final_link routine. */
5748 irel
= (finfo
->section_info
[output_section
->target_index
].relocs
5749 + output_section
->reloc_count
);
5750 rel_hash_ptr
= (finfo
->section_info
[output_section
->target_index
].rel_hashes
5751 + output_section
->reloc_count
);
5753 memset (irel
, 0, sizeof (struct internal_reloc
));
5754 *rel_hash_ptr
= NULL
;
5756 irel
->r_vaddr
= output_section
->vma
+ link_order
->offset
;
5759 irel
->r_symndx
= h
->indx
;
5762 /* Set the index to -2 to force this symbol to get written out. */
5768 irel
->r_type
= howto
->type
;
5769 irel
->r_size
= howto
->bitsize
- 1;
5770 if (howto
->complain_on_overflow
== complain_overflow_signed
)
5771 irel
->r_size
|= 0x80;
5773 ++output_section
->reloc_count
;
5775 /* Now output the reloc to the .loader section. */
5776 if (xcoff_hash_table (finfo
->info
)->loader_section
)
5778 if (!xcoff_create_ldrel (output_bfd
, finfo
, output_section
,
5779 output_bfd
, irel
, hsec
, h
))
5786 /* Do the final link step. */
5789 _bfd_xcoff_bfd_final_link (bfd
*abfd
, struct bfd_link_info
*info
)
5791 bfd_size_type symesz
;
5792 struct xcoff_final_link_info finfo
;
5794 struct bfd_link_order
*p
;
5795 bfd_size_type max_contents_size
;
5796 bfd_size_type max_sym_count
;
5797 bfd_size_type max_lineno_count
;
5798 bfd_size_type max_reloc_count
;
5799 bfd_size_type max_output_reloc_count
;
5800 file_ptr rel_filepos
;
5802 file_ptr line_filepos
;
5803 unsigned int linesz
;
5805 bfd_byte
*external_relocs
= NULL
;
5806 char strbuf
[STRING_SIZE_SIZE
];
5811 abfd
->flags
|= DYNAMIC
;
5813 symesz
= bfd_coff_symesz (abfd
);
5816 finfo
.output_bfd
= abfd
;
5817 finfo
.strtab
= NULL
;
5818 finfo
.section_info
= NULL
;
5819 finfo
.last_file_index
= -1;
5820 finfo
.toc_symindx
= -1;
5821 finfo
.internal_syms
= NULL
;
5822 finfo
.sym_indices
= NULL
;
5823 finfo
.outsyms
= NULL
;
5824 finfo
.linenos
= NULL
;
5825 finfo
.contents
= NULL
;
5826 finfo
.external_relocs
= NULL
;
5828 if (xcoff_hash_table (info
)->loader_section
)
5830 finfo
.ldsym
= (xcoff_hash_table (info
)->loader_section
->contents
5831 + bfd_xcoff_ldhdrsz (abfd
));
5832 finfo
.ldrel
= (xcoff_hash_table (info
)->loader_section
->contents
5833 + bfd_xcoff_ldhdrsz (abfd
)
5834 + (xcoff_hash_table (info
)->ldhdr
.l_nsyms
5835 * bfd_xcoff_ldsymsz (abfd
)));
5843 xcoff_data (abfd
)->coff
.link_info
= info
;
5845 finfo
.strtab
= _bfd_stringtab_init ();
5846 if (finfo
.strtab
== NULL
)
5849 /* Count the relocation entries required for the output file.
5850 (We've already counted the line numbers.) Determine a few
5852 max_contents_size
= 0;
5853 max_lineno_count
= 0;
5854 max_reloc_count
= 0;
5855 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5858 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
5860 if (p
->type
== bfd_indirect_link_order
)
5864 sec
= p
->u
.indirect
.section
;
5866 /* Mark all sections which are to be included in the
5867 link. This will normally be every section. We need
5868 to do this so that we can identify any sections which
5869 the linker has decided to not include. */
5870 sec
->linker_mark
= TRUE
;
5872 o
->reloc_count
+= sec
->reloc_count
;
5874 if (sec
->rawsize
> max_contents_size
)
5875 max_contents_size
= sec
->rawsize
;
5876 if (sec
->size
> max_contents_size
)
5877 max_contents_size
= sec
->size
;
5878 if (coff_section_data (sec
->owner
, sec
) != NULL
5879 && xcoff_section_data (sec
->owner
, sec
) != NULL
5880 && (xcoff_section_data (sec
->owner
, sec
)->lineno_count
5881 > max_lineno_count
))
5883 xcoff_section_data (sec
->owner
, sec
)->lineno_count
;
5884 if (sec
->reloc_count
> max_reloc_count
)
5885 max_reloc_count
= sec
->reloc_count
;
5887 else if (p
->type
== bfd_section_reloc_link_order
5888 || p
->type
== bfd_symbol_reloc_link_order
)
5893 /* Compute the file positions for all the sections. */
5894 if (abfd
->output_has_begun
)
5896 if (xcoff_hash_table (info
)->file_align
!= 0)
5903 file_align
= xcoff_hash_table (info
)->file_align
;
5904 if (file_align
!= 0)
5906 bfd_boolean saw_contents
;
5910 /* Insert .pad sections before every section which has
5911 contents and is loaded, if it is preceded by some other
5912 section which has contents and is loaded. */
5913 saw_contents
= TRUE
;
5914 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5916 if (strcmp (o
->name
, ".pad") == 0)
5917 saw_contents
= FALSE
;
5918 else if ((o
->flags
& SEC_HAS_CONTENTS
) != 0
5919 && (o
->flags
& SEC_LOAD
) != 0)
5922 saw_contents
= TRUE
;
5927 /* Create a pad section and place it before the section
5928 that needs padding. This requires unlinking and
5929 relinking the bfd's section list. */
5931 n
= bfd_make_section_anyway_with_flags (abfd
, ".pad",
5933 n
->alignment_power
= 0;
5935 bfd_section_list_remove (abfd
, n
);
5936 bfd_section_list_insert_before (abfd
, o
, n
);
5937 saw_contents
= FALSE
;
5942 /* Reset the section indices after inserting the new
5945 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5948 o
->target_index
= indx
;
5950 BFD_ASSERT ((unsigned int) indx
== abfd
->section_count
);
5952 /* Work out appropriate sizes for the .pad sections to force
5953 each section to land on a page boundary. This bit of
5954 code knows what compute_section_file_positions is going
5956 sofar
= bfd_coff_filhsz (abfd
);
5957 sofar
+= bfd_coff_aoutsz (abfd
);
5958 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
5959 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5960 if ((bfd_xcoff_is_reloc_count_overflow
5961 (abfd
, (bfd_vma
) o
->reloc_count
))
5962 || (bfd_xcoff_is_lineno_count_overflow
5963 (abfd
, (bfd_vma
) o
->lineno_count
)))
5964 /* 64 does not overflow, need to check if 32 does */
5965 sofar
+= bfd_coff_scnhsz (abfd
);
5967 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
5969 if (strcmp (o
->name
, ".pad") == 0)
5973 BFD_ASSERT (o
->size
== 0);
5974 pageoff
= sofar
& (file_align
- 1);
5977 o
->size
= file_align
- pageoff
;
5978 sofar
+= file_align
- pageoff
;
5979 o
->flags
|= SEC_HAS_CONTENTS
;
5984 if ((o
->flags
& SEC_HAS_CONTENTS
) != 0)
5985 sofar
+= BFD_ALIGN (o
->size
,
5986 1 << o
->alignment_power
);
5991 if (! bfd_coff_compute_section_file_positions (abfd
))
5995 /* Allocate space for the pointers we need to keep for the relocs. */
5999 /* We use section_count + 1, rather than section_count, because
6000 the target_index fields are 1 based. */
6001 amt
= abfd
->section_count
+ 1;
6002 amt
*= sizeof (struct xcoff_link_section_info
);
6003 finfo
.section_info
= bfd_malloc (amt
);
6004 if (finfo
.section_info
== NULL
)
6006 for (i
= 0; i
<= abfd
->section_count
; i
++)
6008 finfo
.section_info
[i
].relocs
= NULL
;
6009 finfo
.section_info
[i
].rel_hashes
= NULL
;
6010 finfo
.section_info
[i
].toc_rel_hashes
= NULL
;
6014 /* Set the file positions for the relocs. */
6015 rel_filepos
= obj_relocbase (abfd
);
6016 relsz
= bfd_coff_relsz (abfd
);
6017 max_output_reloc_count
= 0;
6018 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6020 if (o
->reloc_count
== 0)
6024 /* A stripped file has no relocs. However, we still
6025 allocate the buffers, so that later code doesn't have to
6026 worry about whether we are stripping or not. */
6027 if (info
->strip
== strip_all
)
6031 o
->flags
|= SEC_RELOC
;
6032 o
->rel_filepos
= rel_filepos
;
6033 rel_filepos
+= o
->reloc_count
* relsz
;
6036 /* We don't know the indices of global symbols until we have
6037 written out all the local symbols. For each section in
6038 the output file, we keep an array of pointers to hash
6039 table entries. Each entry in the array corresponds to a
6040 reloc. When we find a reloc against a global symbol, we
6041 set the corresponding entry in this array so that we can
6042 fix up the symbol index after we have written out all the
6045 Because of this problem, we also keep the relocs in
6046 memory until the end of the link. This wastes memory.
6047 We could backpatch the file later, I suppose, although it
6049 amt
= o
->reloc_count
;
6050 amt
*= sizeof (struct internal_reloc
);
6051 finfo
.section_info
[o
->target_index
].relocs
= bfd_malloc (amt
);
6053 amt
= o
->reloc_count
;
6054 amt
*= sizeof (struct xcoff_link_hash_entry
*);
6055 finfo
.section_info
[o
->target_index
].rel_hashes
= bfd_malloc (amt
);
6057 if (finfo
.section_info
[o
->target_index
].relocs
== NULL
6058 || finfo
.section_info
[o
->target_index
].rel_hashes
== NULL
)
6061 if (o
->reloc_count
> max_output_reloc_count
)
6062 max_output_reloc_count
= o
->reloc_count
;
6066 /* We now know the size of the relocs, so we can determine the file
6067 positions of the line numbers. */
6068 line_filepos
= rel_filepos
;
6069 finfo
.line_filepos
= line_filepos
;
6070 linesz
= bfd_coff_linesz (abfd
);
6071 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6073 if (o
->lineno_count
== 0)
6074 o
->line_filepos
= 0;
6077 o
->line_filepos
= line_filepos
;
6078 line_filepos
+= o
->lineno_count
* linesz
;
6081 /* Reset the reloc and lineno counts, so that we can use them to
6082 count the number of entries we have output so far. */
6084 o
->lineno_count
= 0;
6087 obj_sym_filepos (abfd
) = line_filepos
;
6089 /* Figure out the largest number of symbols in an input BFD. Take
6090 the opportunity to clear the output_has_begun fields of all the
6091 input BFD's. We want at least 6 symbols, since that is the
6092 number which xcoff_write_global_symbol may need. */
6094 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
6098 sub
->output_has_begun
= FALSE
;
6099 sz
= obj_raw_syment_count (sub
);
6100 if (sz
> max_sym_count
)
6104 /* Allocate some buffers used while linking. */
6105 amt
= max_sym_count
* sizeof (struct internal_syment
);
6106 finfo
.internal_syms
= bfd_malloc (amt
);
6108 amt
= max_sym_count
* sizeof (long);
6109 finfo
.sym_indices
= bfd_malloc (amt
);
6111 amt
= (max_sym_count
+ 1) * symesz
;
6112 finfo
.outsyms
= bfd_malloc (amt
);
6114 amt
= max_lineno_count
* bfd_coff_linesz (abfd
);
6115 finfo
.linenos
= bfd_malloc (amt
);
6117 amt
= max_contents_size
;
6118 finfo
.contents
= bfd_malloc (amt
);
6120 amt
= max_reloc_count
* relsz
;
6121 finfo
.external_relocs
= bfd_malloc (amt
);
6123 if ((finfo
.internal_syms
== NULL
&& max_sym_count
> 0)
6124 || (finfo
.sym_indices
== NULL
&& max_sym_count
> 0)
6125 || finfo
.outsyms
== NULL
6126 || (finfo
.linenos
== NULL
&& max_lineno_count
> 0)
6127 || (finfo
.contents
== NULL
&& max_contents_size
> 0)
6128 || (finfo
.external_relocs
== NULL
&& max_reloc_count
> 0))
6131 obj_raw_syment_count (abfd
) = 0;
6133 /* Find a TOC symbol, if we need one. */
6134 if (!xcoff_find_tc0 (abfd
, &finfo
))
6137 /* We now know the position of everything in the file, except that
6138 we don't know the size of the symbol table and therefore we don't
6139 know where the string table starts. We just build the string
6140 table in memory as we go along. We process all the relocations
6141 for a single input file at once. */
6142 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6144 for (p
= o
->map_head
.link_order
; p
!= NULL
; p
= p
->next
)
6146 if (p
->type
== bfd_indirect_link_order
6147 && p
->u
.indirect
.section
->owner
->xvec
== abfd
->xvec
)
6149 sub
= p
->u
.indirect
.section
->owner
;
6150 if (! sub
->output_has_begun
)
6152 if (! xcoff_link_input_bfd (&finfo
, sub
))
6154 sub
->output_has_begun
= TRUE
;
6157 else if (p
->type
== bfd_section_reloc_link_order
6158 || p
->type
== bfd_symbol_reloc_link_order
)
6160 if (! xcoff_reloc_link_order (abfd
, &finfo
, o
, p
))
6165 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
6171 /* Free up the buffers used by xcoff_link_input_bfd. */
6172 if (finfo
.internal_syms
!= NULL
)
6174 free (finfo
.internal_syms
);
6175 finfo
.internal_syms
= NULL
;
6177 if (finfo
.sym_indices
!= NULL
)
6179 free (finfo
.sym_indices
);
6180 finfo
.sym_indices
= NULL
;
6182 if (finfo
.linenos
!= NULL
)
6184 free (finfo
.linenos
);
6185 finfo
.linenos
= NULL
;
6187 if (finfo
.contents
!= NULL
)
6189 free (finfo
.contents
);
6190 finfo
.contents
= NULL
;
6192 if (finfo
.external_relocs
!= NULL
)
6194 free (finfo
.external_relocs
);
6195 finfo
.external_relocs
= NULL
;
6198 /* The value of the last C_FILE symbol is supposed to be -1. Write
6200 if (finfo
.last_file_index
!= -1)
6202 finfo
.last_file
.n_value
= -(bfd_vma
) 1;
6203 bfd_coff_swap_sym_out (abfd
, (void *) &finfo
.last_file
,
6204 (void *) finfo
.outsyms
);
6205 pos
= obj_sym_filepos (abfd
) + finfo
.last_file_index
* symesz
;
6206 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0
6207 || bfd_bwrite (finfo
.outsyms
, symesz
, abfd
) != symesz
)
6211 /* Write out all the global symbols which do not come from XCOFF
6213 xcoff_link_hash_traverse (xcoff_hash_table (info
),
6214 xcoff_write_global_symbol
,
6217 if (finfo
.outsyms
!= NULL
)
6219 free (finfo
.outsyms
);
6220 finfo
.outsyms
= NULL
;
6223 /* Now that we have written out all the global symbols, we know the
6224 symbol indices to use for relocs against them, and we can finally
6225 write out the relocs. */
6226 amt
= max_output_reloc_count
* relsz
;
6227 external_relocs
= bfd_malloc (amt
);
6228 if (external_relocs
== NULL
&& max_output_reloc_count
!= 0)
6231 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
6233 struct internal_reloc
*irel
;
6234 struct internal_reloc
*irelend
;
6235 struct xcoff_link_hash_entry
**rel_hash
;
6236 struct xcoff_toc_rel_hash
*toc_rel_hash
;
6238 bfd_size_type rel_size
;
6240 /* A stripped file has no relocs. */
6241 if (info
->strip
== strip_all
)
6247 if (o
->reloc_count
== 0)
6250 irel
= finfo
.section_info
[o
->target_index
].relocs
;
6251 irelend
= irel
+ o
->reloc_count
;
6252 rel_hash
= finfo
.section_info
[o
->target_index
].rel_hashes
;
6253 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
6255 if (*rel_hash
!= NULL
)
6257 if ((*rel_hash
)->indx
< 0)
6259 if (! ((*info
->callbacks
->unattached_reloc
)
6260 (info
, (*rel_hash
)->root
.root
.string
,
6261 NULL
, o
, irel
->r_vaddr
)))
6263 (*rel_hash
)->indx
= 0;
6265 irel
->r_symndx
= (*rel_hash
)->indx
;
6269 for (toc_rel_hash
= finfo
.section_info
[o
->target_index
].toc_rel_hashes
;
6270 toc_rel_hash
!= NULL
;
6271 toc_rel_hash
= toc_rel_hash
->next
)
6273 if (toc_rel_hash
->h
->u
.toc_indx
< 0)
6275 if (! ((*info
->callbacks
->unattached_reloc
)
6276 (info
, toc_rel_hash
->h
->root
.root
.string
,
6277 NULL
, o
, toc_rel_hash
->rel
->r_vaddr
)))
6279 toc_rel_hash
->h
->u
.toc_indx
= 0;
6281 toc_rel_hash
->rel
->r_symndx
= toc_rel_hash
->h
->u
.toc_indx
;
6284 /* XCOFF requires that the relocs be sorted by address. We tend
6285 to produce them in the order in which their containing csects
6286 appear in the symbol table, which is not necessarily by
6287 address. So we sort them here. There may be a better way to
6289 qsort ((void *) finfo
.section_info
[o
->target_index
].relocs
,
6290 o
->reloc_count
, sizeof (struct internal_reloc
),
6293 irel
= finfo
.section_info
[o
->target_index
].relocs
;
6294 irelend
= irel
+ o
->reloc_count
;
6295 erel
= external_relocs
;
6296 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
6297 bfd_coff_swap_reloc_out (abfd
, (void *) irel
, (void *) erel
);
6299 rel_size
= relsz
* o
->reloc_count
;
6300 if (bfd_seek (abfd
, o
->rel_filepos
, SEEK_SET
) != 0
6301 || bfd_bwrite ((void *) external_relocs
, rel_size
, abfd
) != rel_size
)
6305 if (external_relocs
!= NULL
)
6307 free (external_relocs
);
6308 external_relocs
= NULL
;
6311 /* Free up the section information. */
6312 if (finfo
.section_info
!= NULL
)
6316 for (i
= 0; i
< abfd
->section_count
; i
++)
6318 if (finfo
.section_info
[i
].relocs
!= NULL
)
6319 free (finfo
.section_info
[i
].relocs
);
6320 if (finfo
.section_info
[i
].rel_hashes
!= NULL
)
6321 free (finfo
.section_info
[i
].rel_hashes
);
6323 free (finfo
.section_info
);
6324 finfo
.section_info
= NULL
;
6327 /* Write out the loader section contents. */
6328 o
= xcoff_hash_table (info
)->loader_section
;
6331 BFD_ASSERT ((bfd_byte
*) finfo
.ldrel
6332 == (xcoff_hash_table (info
)->loader_section
->contents
6333 + xcoff_hash_table (info
)->ldhdr
.l_impoff
));
6334 if (!bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6335 (file_ptr
) o
->output_offset
, o
->size
))
6339 /* Write out the magic sections. */
6340 o
= xcoff_hash_table (info
)->linkage_section
;
6342 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6343 (file_ptr
) o
->output_offset
,
6346 o
= xcoff_hash_table (info
)->toc_section
;
6348 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6349 (file_ptr
) o
->output_offset
,
6352 o
= xcoff_hash_table (info
)->descriptor_section
;
6354 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
6355 (file_ptr
) o
->output_offset
,
6359 /* Write out the string table. */
6360 pos
= obj_sym_filepos (abfd
) + obj_raw_syment_count (abfd
) * symesz
;
6361 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6364 _bfd_stringtab_size (finfo
.strtab
) + STRING_SIZE_SIZE
,
6366 amt
= STRING_SIZE_SIZE
;
6367 if (bfd_bwrite (strbuf
, amt
, abfd
) != amt
)
6369 if (! _bfd_stringtab_emit (abfd
, finfo
.strtab
))
6372 _bfd_stringtab_free (finfo
.strtab
);
6374 /* Write out the debugging string table. */
6375 o
= xcoff_hash_table (info
)->debug_section
;
6378 struct bfd_strtab_hash
*debug_strtab
;
6380 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
6381 BFD_ASSERT (o
->output_section
->size
- o
->output_offset
6382 >= _bfd_stringtab_size (debug_strtab
));
6383 pos
= o
->output_section
->filepos
+ o
->output_offset
;
6384 if (bfd_seek (abfd
, pos
, SEEK_SET
) != 0)
6386 if (! _bfd_stringtab_emit (abfd
, debug_strtab
))
6390 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
6391 not try to write out the symbols. */
6392 bfd_get_symcount (abfd
) = 0;
6397 if (finfo
.strtab
!= NULL
)
6398 _bfd_stringtab_free (finfo
.strtab
);
6400 if (finfo
.section_info
!= NULL
)
6404 for (i
= 0; i
< abfd
->section_count
; i
++)
6406 if (finfo
.section_info
[i
].relocs
!= NULL
)
6407 free (finfo
.section_info
[i
].relocs
);
6408 if (finfo
.section_info
[i
].rel_hashes
!= NULL
)
6409 free (finfo
.section_info
[i
].rel_hashes
);
6411 free (finfo
.section_info
);
6414 if (finfo
.internal_syms
!= NULL
)
6415 free (finfo
.internal_syms
);
6416 if (finfo
.sym_indices
!= NULL
)
6417 free (finfo
.sym_indices
);
6418 if (finfo
.outsyms
!= NULL
)
6419 free (finfo
.outsyms
);
6420 if (finfo
.linenos
!= NULL
)
6421 free (finfo
.linenos
);
6422 if (finfo
.contents
!= NULL
)
6423 free (finfo
.contents
);
6424 if (finfo
.external_relocs
!= NULL
)
6425 free (finfo
.external_relocs
);
6426 if (external_relocs
!= NULL
)
6427 free (external_relocs
);