1 /* POWER/PowerPC XCOFF linker support.
2 Copyright 1995, 1996 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 #include "coff/internal.h"
28 /* This file holds the XCOFF linker code. */
30 #define STRING_SIZE_SIZE (4)
32 /* In order to support linking different object file formats into an
33 XCOFF format, we need to be able to determine whether a particular
34 bfd_target is an XCOFF vector. FIXME: We need to rethink this
36 #define XCOFF_XVECP(xv) \
37 (strcmp ((xv)->name, "aixcoff-rs6000") == 0 \
38 || strcmp ((xv)->name, "xcoff-powermac") == 0)
40 /* Get the XCOFF hash table entries for a BFD. */
41 #define obj_xcoff_sym_hashes(bfd) \
42 ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd))
44 /* XCOFF relocation types. These probably belong in a header file
45 somewhere. The relocations are described in the function
46 _bfd_ppc_xcoff_relocate_section in this file. */
62 #define R_RRTBI (0x14)
63 #define R_RRTBA (0x15)
71 /* The first word of global linkage code. This must be modified by
72 filling in the correct TOC offset. */
74 #define XCOFF_GLINK_FIRST (0x81820000) /* lwz r12,0(r2) */
76 /* The remaining words of global linkage code. */
78 static unsigned long xcoff_glink_code
[] =
80 0x90410014, /* stw r2,20(r1) */
81 0x800c0000, /* lwz r0,0(r12) */
82 0x804c0004, /* lwz r2,4(r12) */
83 0x7c0903a6, /* mtctr r0 */
84 0x4e800420, /* bctr */
85 0x0, /* start of traceback table */
86 0x000c8000, /* traceback table */
87 0x0 /* traceback table */
90 #define XCOFF_GLINK_SIZE \
91 (((sizeof xcoff_glink_code / sizeof xcoff_glink_code[0]) * 4) + 4)
93 /* We reuse the SEC_ROM flag as a mark flag for garbage collection.
94 This flag will only be used on input sections. */
96 #define SEC_MARK (SEC_ROM)
98 /* The ldhdr structure. This appears at the start of the .loader
101 struct internal_ldhdr
103 /* The version number: currently always 1. */
104 unsigned long l_version
;
105 /* The number of symbol table entries. */
106 bfd_size_type l_nsyms
;
107 /* The number of relocation table entries. */
108 bfd_size_type l_nreloc
;
109 /* The length of the import file string table. */
110 bfd_size_type l_istlen
;
111 /* The number of import files. */
112 bfd_size_type l_nimpid
;
113 /* The offset from the start of the .loader section to the first
114 entry in the import file table. */
115 bfd_size_type l_impoff
;
116 /* The length of the string table. */
117 bfd_size_type l_stlen
;
118 /* The offset from the start of the .loader section to the first
119 entry in the string table. */
120 bfd_size_type l_stoff
;
123 struct external_ldhdr
125 bfd_byte l_version
[4];
127 bfd_byte l_nreloc
[4];
128 bfd_byte l_istlen
[4];
129 bfd_byte l_nimpid
[4];
130 bfd_byte l_impoff
[4];
135 #define LDHDRSZ (8 * 4)
137 /* The ldsym structure. This is used to represent a symbol in the
140 struct internal_ldsym
144 /* The symbol name if <= SYMNMLEN characters. */
145 char _l_name
[SYMNMLEN
];
148 /* Zero if the symbol name is more than SYMNMLEN characters. */
150 /* The offset in the string table if the symbol name is more
151 than SYMNMLEN characters. */
155 /* The symbol value. */
157 /* The symbol section number. */
159 /* The symbol type and flags. */
161 /* The symbol storage class. */
163 /* The import file ID. */
164 bfd_size_type l_ifile
;
165 /* Offset to the parameter type check string. */
166 bfd_size_type l_parm
;
169 struct external_ldsym
173 bfd_byte _l_name
[SYMNMLEN
];
176 bfd_byte _l_zeroes
[4];
177 bfd_byte _l_offset
[4];
182 bfd_byte l_smtype
[1];
183 bfd_byte l_smclas
[1];
188 #define LDSYMSZ (8 + 3 * 4 + 2 + 2)
190 /* These flags are for the l_smtype field (the lower three bits are an
193 /* Imported symbol. */
194 #define L_IMPORT (0x40)
196 #define L_ENTRY (0x20)
197 /* Exported symbol. */
198 #define L_EXPORT (0x10)
200 /* The ldrel structure. This is used to represent a reloc in the
203 struct internal_ldrel
205 /* The reloc address. */
207 /* The symbol table index in the .loader section symbol table. */
208 bfd_size_type l_symndx
;
209 /* The relocation type and size. */
211 /* The section number this relocation applies to. */
215 struct external_ldrel
218 bfd_byte l_symndx
[4];
220 bfd_byte l_rsecnm
[2];
223 #define LDRELSZ (2 * 4 + 2 * 2)
225 /* The list of import files. */
227 struct xcoff_import_file
229 /* The next entry in the list. */
230 struct xcoff_import_file
*next
;
235 /* The member name. */
239 /* An entry in the XCOFF linker hash table. */
241 struct xcoff_link_hash_entry
243 struct bfd_link_hash_entry root
;
245 /* Symbol index in output file. Set to -1 initially. Set to -2 if
246 there is a reloc against this symbol. */
249 /* If we have created a TOC entry for this symbol, this is the .tc
250 section which holds it. */
251 asection
*toc_section
;
255 /* If we have created a TOC entry (the XCOFF_SET_TOC flag is
256 set), this is the offset in toc_section. */
258 /* If the TOC entry comes from an input file, this is set to the
259 symbo lindex of the C_HIDEXT XMC_TC symbol. */
263 /* If this symbol is a function entry point which is called, this
264 field holds a pointer to the function descriptor. If this symbol
265 is a function descriptor, this field holds a pointer to the
266 function entry point. */
267 struct xcoff_link_hash_entry
*descriptor
;
269 /* The .loader symbol table entry, if there is one. */
270 struct internal_ldsym
*ldsym
;
272 /* The .loader symbol table index. */
275 /* Some linker flags. */
276 unsigned short flags
;
277 /* Symbol is referenced by a regular object. */
278 #define XCOFF_REF_REGULAR (01)
279 /* Symbol is defined by a regular object. */
280 #define XCOFF_DEF_REGULAR (02)
281 /* Symbol is defined by a dynamic object. */
282 #define XCOFF_DEF_DYNAMIC (04)
283 /* Symbol is used in a reloc being copied into the .loader section. */
284 #define XCOFF_LDREL (010)
285 /* Symbol is the entry point. */
286 #define XCOFF_ENTRY (020)
287 /* Symbol is called; this is, it appears in a R_BR reloc. */
288 #define XCOFF_CALLED (040)
289 /* Symbol needs the TOC entry filled in. */
290 #define XCOFF_SET_TOC (0100)
291 /* Symbol is explicitly imported. */
292 #define XCOFF_IMPORT (0200)
293 /* Symbol is explicitly exported. */
294 #define XCOFF_EXPORT (0400)
295 /* Symbol has been processed by xcoff_build_ldsyms. */
296 #define XCOFF_BUILT_LDSYM (01000)
297 /* Symbol is mentioned by a section which was not garbage collected. */
298 #define XCOFF_MARK (02000)
299 /* Symbol size is recorded in size_list list from hash table. */
300 #define XCOFF_HAS_SIZE (04000)
301 /* Symbol is a function descriptor. */
302 #define XCOFF_DESCRIPTOR (010000)
304 /* The storage mapping class. */
305 unsigned char smclas
;
308 /* The XCOFF linker hash table. */
310 struct xcoff_link_hash_table
312 struct bfd_link_hash_table root
;
314 /* The .debug string hash table. We need to compute this while
315 reading the input files, so that we know how large the .debug
316 section will be before we assign section positions. */
317 struct bfd_strtab_hash
*debug_strtab
;
319 /* The .debug section we will use for the final output. */
320 asection
*debug_section
;
322 /* The .loader section we will use for the final output. */
323 asection
*loader_section
;
325 /* A count of non TOC relative relocs which will need to be
326 allocated in the .loader section. */
329 /* The .loader section header. */
330 struct internal_ldhdr ldhdr
;
332 /* The .gl section we use to hold global linkage code. */
333 asection
*linkage_section
;
335 /* The .tc section we use to hold toc entries we build for global
337 asection
*toc_section
;
339 /* The .ds section we use to hold function descriptors which we
340 create for exported symbols. */
341 asection
*descriptor_section
;
343 /* The list of import files. */
344 struct xcoff_import_file
*imports
;
346 /* Required alignment of sections within the output file. */
347 unsigned long file_align
;
349 /* Whether the .text section must be read-only. */
352 /* Whether garbage collection was done. */
355 /* A linked list of symbols for which we have size information. */
356 struct xcoff_link_size_list
358 struct xcoff_link_size_list
*next
;
359 struct xcoff_link_hash_entry
*h
;
363 /* Magic sections: _text, _etext, _data, _edata, _end, end. */
364 asection
*special_sections
[6];
367 /* Information we keep for each section in the output file during the
370 struct xcoff_link_section_info
372 /* The relocs to be output. */
373 struct internal_reloc
*relocs
;
374 /* For each reloc against a global symbol whose index was not known
375 when the reloc was handled, the global hash table entry. */
376 struct xcoff_link_hash_entry
**rel_hashes
;
377 /* If there is a TOC relative reloc against a global symbol, and the
378 index of the TOC symbol is not known when the reloc was handled,
379 an entry is added to this linked list. This is not an array,
380 like rel_hashes, because this case is quite uncommon. */
381 struct xcoff_toc_rel_hash
383 struct xcoff_toc_rel_hash
*next
;
384 struct xcoff_link_hash_entry
*h
;
385 struct internal_reloc
*rel
;
389 /* Information that we pass around while doing the final link step. */
391 struct xcoff_final_link_info
393 /* General link information. */
394 struct bfd_link_info
*info
;
397 /* Hash table for long symbol names. */
398 struct bfd_strtab_hash
*strtab
;
399 /* Array of information kept for each output section, indexed by the
400 target_index field. */
401 struct xcoff_link_section_info
*section_info
;
402 /* Symbol index of last C_FILE symbol (-1 if none). */
403 long last_file_index
;
404 /* Contents of last C_FILE symbol. */
405 struct internal_syment last_file
;
406 /* Symbol index of TOC symbol. */
408 /* Start of .loader symbols. */
409 struct external_ldsym
*ldsym
;
410 /* Next .loader reloc to swap out. */
411 struct external_ldrel
*ldrel
;
412 /* File position of start of line numbers. */
413 file_ptr line_filepos
;
414 /* Buffer large enough to hold swapped symbols of any input file. */
415 struct internal_syment
*internal_syms
;
416 /* Buffer large enough to hold output indices of symbols of any
419 /* Buffer large enough to hold output symbols for any input file. */
421 /* Buffer large enough to hold external line numbers for any input
424 /* Buffer large enough to hold any input section. */
426 /* Buffer large enough to hold external relocs of any input section. */
427 bfd_byte
*external_relocs
;
430 static void xcoff_swap_ldhdr_in
431 PARAMS ((bfd
*, const struct external_ldhdr
*, struct internal_ldhdr
*));
432 static void xcoff_swap_ldhdr_out
433 PARAMS ((bfd
*, const struct internal_ldhdr
*, struct external_ldhdr
*));
434 static void xcoff_swap_ldsym_in
435 PARAMS ((bfd
*, const struct external_ldsym
*, struct internal_ldsym
*));
436 static void xcoff_swap_ldsym_out
437 PARAMS ((bfd
*, const struct internal_ldsym
*, struct external_ldsym
*));
438 static void xcoff_swap_ldrel_in
439 PARAMS ((bfd
*, const struct external_ldrel
*, struct internal_ldrel
*));
440 static void xcoff_swap_ldrel_out
441 PARAMS ((bfd
*, const struct internal_ldrel
*, struct external_ldrel
*));
442 static struct bfd_hash_entry
*xcoff_link_hash_newfunc
443 PARAMS ((struct bfd_hash_entry
*, struct bfd_hash_table
*, const char *));
444 static struct internal_reloc
*xcoff_read_internal_relocs
445 PARAMS ((bfd
*, asection
*, boolean
, bfd_byte
*, boolean
,
446 struct internal_reloc
*));
447 static boolean xcoff_link_add_object_symbols
448 PARAMS ((bfd
*, struct bfd_link_info
*));
449 static boolean xcoff_link_check_archive_element
450 PARAMS ((bfd
*, struct bfd_link_info
*, boolean
*));
451 static boolean xcoff_link_check_ar_symbols
452 PARAMS ((bfd
*, struct bfd_link_info
*, boolean
*));
453 static boolean xcoff_link_check_dynamic_ar_symbols
454 PARAMS ((bfd
*, struct bfd_link_info
*, boolean
*));
455 static bfd_size_type xcoff_find_reloc
456 PARAMS ((struct internal_reloc
*, bfd_size_type
, bfd_vma
));
457 static boolean xcoff_link_add_symbols
PARAMS ((bfd
*, struct bfd_link_info
*));
458 static boolean xcoff_link_add_dynamic_symbols
459 PARAMS ((bfd
*, struct bfd_link_info
*));
460 static boolean xcoff_mark
PARAMS ((struct bfd_link_info
*, asection
*));
461 static void xcoff_sweep
PARAMS ((struct bfd_link_info
*));
462 static boolean xcoff_build_ldsyms
463 PARAMS ((struct xcoff_link_hash_entry
*, PTR
));
464 static boolean xcoff_link_input_bfd
465 PARAMS ((struct xcoff_final_link_info
*, bfd
*));
466 static boolean xcoff_write_global_symbol
467 PARAMS ((struct xcoff_link_hash_entry
*, PTR
));
468 static boolean xcoff_reloc_link_order
469 PARAMS ((bfd
*, struct xcoff_final_link_info
*, asection
*,
470 struct bfd_link_order
*));
471 static int xcoff_sort_relocs
PARAMS ((const PTR
, const PTR
));
473 /* Routines to swap information in the XCOFF .loader section. If we
474 ever need to write an XCOFF loader, this stuff will need to be
475 moved to another file shared by the linker (which XCOFF calls the
476 ``binder'') and the loader. */
478 /* Swap in the ldhdr structure. */
481 xcoff_swap_ldhdr_in (abfd
, src
, dst
)
483 const struct external_ldhdr
*src
;
484 struct internal_ldhdr
*dst
;
486 dst
->l_version
= bfd_get_32 (abfd
, src
->l_version
);
487 dst
->l_nsyms
= bfd_get_32 (abfd
, src
->l_nsyms
);
488 dst
->l_nreloc
= bfd_get_32 (abfd
, src
->l_nreloc
);
489 dst
->l_istlen
= bfd_get_32 (abfd
, src
->l_istlen
);
490 dst
->l_nimpid
= bfd_get_32 (abfd
, src
->l_nimpid
);
491 dst
->l_impoff
= bfd_get_32 (abfd
, src
->l_impoff
);
492 dst
->l_stlen
= bfd_get_32 (abfd
, src
->l_stlen
);
493 dst
->l_stoff
= bfd_get_32 (abfd
, src
->l_stoff
);
496 /* Swap out the ldhdr structure. */
499 xcoff_swap_ldhdr_out (abfd
, src
, dst
)
501 const struct internal_ldhdr
*src
;
502 struct external_ldhdr
*dst
;
504 bfd_put_32 (abfd
, src
->l_version
, dst
->l_version
);
505 bfd_put_32 (abfd
, src
->l_nsyms
, dst
->l_nsyms
);
506 bfd_put_32 (abfd
, src
->l_nreloc
, dst
->l_nreloc
);
507 bfd_put_32 (abfd
, src
->l_istlen
, dst
->l_istlen
);
508 bfd_put_32 (abfd
, src
->l_nimpid
, dst
->l_nimpid
);
509 bfd_put_32 (abfd
, src
->l_impoff
, dst
->l_impoff
);
510 bfd_put_32 (abfd
, src
->l_stlen
, dst
->l_stlen
);
511 bfd_put_32 (abfd
, src
->l_stoff
, dst
->l_stoff
);
514 /* Swap in the ldsym structure. */
517 xcoff_swap_ldsym_in (abfd
, src
, dst
)
519 const struct external_ldsym
*src
;
520 struct internal_ldsym
*dst
;
522 if (bfd_get_32 (abfd
, src
->_l
._l_l
._l_zeroes
) != 0)
523 memcpy (dst
->_l
._l_name
, src
->_l
._l_name
, SYMNMLEN
);
526 dst
->_l
._l_l
._l_zeroes
= 0;
527 dst
->_l
._l_l
._l_offset
= bfd_get_32 (abfd
, src
->_l
._l_l
._l_offset
);
529 dst
->l_value
= bfd_get_32 (abfd
, src
->l_value
);
530 dst
->l_scnum
= bfd_get_16 (abfd
, src
->l_scnum
);
531 dst
->l_smtype
= bfd_get_8 (abfd
, src
->l_smtype
);
532 dst
->l_smclas
= bfd_get_8 (abfd
, src
->l_smclas
);
533 dst
->l_ifile
= bfd_get_32 (abfd
, src
->l_ifile
);
534 dst
->l_parm
= bfd_get_32 (abfd
, src
->l_parm
);
537 /* Swap out the ldsym structure. */
540 xcoff_swap_ldsym_out (abfd
, src
, dst
)
542 const struct internal_ldsym
*src
;
543 struct external_ldsym
*dst
;
545 if (src
->_l
._l_l
._l_zeroes
!= 0)
546 memcpy (dst
->_l
._l_name
, src
->_l
._l_name
, SYMNMLEN
);
549 bfd_put_32 (abfd
, 0, dst
->_l
._l_l
._l_zeroes
);
550 bfd_put_32 (abfd
, src
->_l
._l_l
._l_offset
, dst
->_l
._l_l
._l_offset
);
552 bfd_put_32 (abfd
, src
->l_value
, dst
->l_value
);
553 bfd_put_16 (abfd
, src
->l_scnum
, dst
->l_scnum
);
554 bfd_put_8 (abfd
, src
->l_smtype
, dst
->l_smtype
);
555 bfd_put_8 (abfd
, src
->l_smclas
, dst
->l_smclas
);
556 bfd_put_32 (abfd
, src
->l_ifile
, dst
->l_ifile
);
557 bfd_put_32 (abfd
, src
->l_parm
, dst
->l_parm
);
560 /* Swap in the ldrel structure. */
563 xcoff_swap_ldrel_in (abfd
, src
, dst
)
565 const struct external_ldrel
*src
;
566 struct internal_ldrel
*dst
;
568 dst
->l_vaddr
= bfd_get_32 (abfd
, src
->l_vaddr
);
569 dst
->l_symndx
= bfd_get_32 (abfd
, src
->l_symndx
);
570 dst
->l_rtype
= bfd_get_16 (abfd
, src
->l_rtype
);
571 dst
->l_rsecnm
= bfd_get_16 (abfd
, src
->l_rsecnm
);
574 /* Swap out the ldrel structure. */
577 xcoff_swap_ldrel_out (abfd
, src
, dst
)
579 const struct internal_ldrel
*src
;
580 struct external_ldrel
*dst
;
582 bfd_put_32 (abfd
, src
->l_vaddr
, dst
->l_vaddr
);
583 bfd_put_32 (abfd
, src
->l_symndx
, dst
->l_symndx
);
584 bfd_put_16 (abfd
, src
->l_rtype
, dst
->l_rtype
);
585 bfd_put_16 (abfd
, src
->l_rsecnm
, dst
->l_rsecnm
);
588 /* Routines to read XCOFF dynamic information. This don't really
589 belong here, but we already have the ldsym manipulation routines
592 /* Read the contents of a section. */
595 xcoff_get_section_contents (abfd
, sec
)
599 if (coff_section_data (abfd
, sec
) == NULL
)
601 sec
->used_by_bfd
= bfd_zalloc (abfd
,
602 sizeof (struct coff_section_tdata
));
603 if (sec
->used_by_bfd
== NULL
)
607 if (coff_section_data (abfd
, sec
)->contents
== NULL
)
609 coff_section_data (abfd
, sec
)->contents
= bfd_malloc (sec
->_raw_size
);
610 if (coff_section_data (abfd
, sec
)->contents
== NULL
)
613 if (! bfd_get_section_contents (abfd
, sec
,
614 coff_section_data (abfd
, sec
)->contents
,
615 (file_ptr
) 0, sec
->_raw_size
))
622 /* Get the size required to hold the dynamic symbols. */
625 _bfd_xcoff_get_dynamic_symtab_upper_bound (abfd
)
630 struct internal_ldhdr ldhdr
;
632 if ((abfd
->flags
& DYNAMIC
) == 0)
634 bfd_set_error (bfd_error_invalid_operation
);
638 lsec
= bfd_get_section_by_name (abfd
, ".loader");
641 bfd_set_error (bfd_error_no_symbols
);
645 if (! xcoff_get_section_contents (abfd
, lsec
))
647 contents
= coff_section_data (abfd
, lsec
)->contents
;
649 xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) contents
, &ldhdr
);
651 return (ldhdr
.l_nsyms
+ 1) * sizeof (asymbol
*);
654 /* Get the dynamic symbols. */
657 _bfd_xcoff_canonicalize_dynamic_symtab (abfd
, psyms
)
663 struct internal_ldhdr ldhdr
;
665 struct external_ldsym
*elsym
, *elsymend
;
666 coff_symbol_type
*symbuf
;
668 if ((abfd
->flags
& DYNAMIC
) == 0)
670 bfd_set_error (bfd_error_invalid_operation
);
674 lsec
= bfd_get_section_by_name (abfd
, ".loader");
677 bfd_set_error (bfd_error_no_symbols
);
681 if (! xcoff_get_section_contents (abfd
, lsec
))
683 contents
= coff_section_data (abfd
, lsec
)->contents
;
685 coff_section_data (abfd
, lsec
)->keep_contents
= true;
687 xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) contents
, &ldhdr
);
689 strings
= (char *) contents
+ ldhdr
.l_stoff
;
691 symbuf
= ((coff_symbol_type
*)
692 bfd_zalloc (abfd
, ldhdr
.l_nsyms
* sizeof (coff_symbol_type
)));
696 elsym
= (struct external_ldsym
*) (contents
+ LDHDRSZ
);
697 elsymend
= elsym
+ ldhdr
.l_nsyms
;
698 for (; elsym
< elsymend
; elsym
++, symbuf
++, psyms
++)
700 struct internal_ldsym ldsym
;
702 xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
704 symbuf
->symbol
.the_bfd
= abfd
;
706 if (ldsym
._l
._l_l
._l_zeroes
== 0)
707 symbuf
->symbol
.name
= strings
+ ldsym
._l
._l_l
._l_offset
;
712 for (i
= 0; i
< SYMNMLEN
; i
++)
713 if (ldsym
._l
._l_name
[i
] == '\0')
716 symbuf
->symbol
.name
= elsym
->_l
._l_name
;
721 c
= bfd_alloc (abfd
, SYMNMLEN
+ 1);
724 memcpy (c
, ldsym
._l
._l_name
, SYMNMLEN
);
726 symbuf
->symbol
.name
= c
;
730 if (ldsym
.l_smclas
== XMC_XO
)
731 symbuf
->symbol
.section
= bfd_abs_section_ptr
;
733 symbuf
->symbol
.section
= coff_section_from_bfd_index (abfd
,
735 symbuf
->symbol
.value
= ldsym
.l_value
- symbuf
->symbol
.section
->vma
;
737 symbuf
->symbol
.flags
= BSF_NO_FLAGS
;
738 if ((ldsym
.l_smtype
& L_EXPORT
) != 0)
739 symbuf
->symbol
.flags
|= BSF_GLOBAL
;
741 /* FIXME: We have no way to record the other information stored
742 with the loader symbol. */
744 *psyms
= (asymbol
*) symbuf
;
749 return ldhdr
.l_nsyms
;
752 /* Get the size required to hold the dynamic relocs. */
755 _bfd_xcoff_get_dynamic_reloc_upper_bound (abfd
)
760 struct internal_ldhdr ldhdr
;
762 if ((abfd
->flags
& DYNAMIC
) == 0)
764 bfd_set_error (bfd_error_invalid_operation
);
768 lsec
= bfd_get_section_by_name (abfd
, ".loader");
771 bfd_set_error (bfd_error_no_symbols
);
775 if (! xcoff_get_section_contents (abfd
, lsec
))
777 contents
= coff_section_data (abfd
, lsec
)->contents
;
779 xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) contents
, &ldhdr
);
781 return (ldhdr
.l_nreloc
+ 1) * sizeof (arelent
*);
784 /* The typical dynamic reloc. */
786 static reloc_howto_type xcoff_dynamic_reloc
=
789 2, /* size (0 = byte, 1 = short, 2 = long) */
791 false, /* pc_relative */
793 complain_overflow_bitfield
, /* complain_on_overflow */
794 0, /* special_function */
796 true, /* partial_inplace */
797 0xffffffff, /* src_mask */
798 0xffffffff, /* dst_mask */
799 false); /* pcrel_offset */
801 /* Get the dynamic relocs. */
804 _bfd_xcoff_canonicalize_dynamic_reloc (abfd
, prelocs
, syms
)
811 struct internal_ldhdr ldhdr
;
813 struct external_ldrel
*elrel
, *elrelend
;
815 if ((abfd
->flags
& DYNAMIC
) == 0)
817 bfd_set_error (bfd_error_invalid_operation
);
821 lsec
= bfd_get_section_by_name (abfd
, ".loader");
824 bfd_set_error (bfd_error_no_symbols
);
828 if (! xcoff_get_section_contents (abfd
, lsec
))
830 contents
= coff_section_data (abfd
, lsec
)->contents
;
832 xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) contents
, &ldhdr
);
834 relbuf
= (arelent
*) bfd_alloc (abfd
, ldhdr
.l_nreloc
* sizeof (arelent
));
838 elrel
= ((struct external_ldrel
*)
839 (contents
+ LDHDRSZ
+ ldhdr
.l_nsyms
* LDSYMSZ
));
840 elrelend
= elrel
+ ldhdr
.l_nreloc
;
841 for (; elrel
< elrelend
; elrel
++, relbuf
++, prelocs
++)
843 struct internal_ldrel ldrel
;
845 xcoff_swap_ldrel_in (abfd
, elrel
, &ldrel
);
847 if (ldrel
.l_symndx
>= 3)
848 relbuf
->sym_ptr_ptr
= syms
+ (ldrel
.l_symndx
- 3);
854 switch (ldrel
.l_symndx
)
870 sec
= bfd_get_section_by_name (abfd
, name
);
873 bfd_set_error (bfd_error_bad_value
);
877 relbuf
->sym_ptr_ptr
= sec
->symbol_ptr_ptr
;
880 relbuf
->address
= ldrel
.l_vaddr
;
883 /* Most dynamic relocs have the same type. FIXME: This is only
884 correct if ldrel.l_rtype == 0. In other cases, we should use
885 a different howto. */
886 relbuf
->howto
= &xcoff_dynamic_reloc
;
888 /* FIXME: We have no way to record the l_rsecnm field. */
895 return ldhdr
.l_nreloc
;
898 /* Routine to create an entry in an XCOFF link hash table. */
900 static struct bfd_hash_entry
*
901 xcoff_link_hash_newfunc (entry
, table
, string
)
902 struct bfd_hash_entry
*entry
;
903 struct bfd_hash_table
*table
;
906 struct xcoff_link_hash_entry
*ret
= (struct xcoff_link_hash_entry
*) entry
;
908 /* Allocate the structure if it has not already been allocated by a
910 if (ret
== (struct xcoff_link_hash_entry
*) NULL
)
911 ret
= ((struct xcoff_link_hash_entry
*)
912 bfd_hash_allocate (table
, sizeof (struct xcoff_link_hash_entry
)));
913 if (ret
== (struct xcoff_link_hash_entry
*) NULL
)
914 return (struct bfd_hash_entry
*) ret
;
916 /* Call the allocation method of the superclass. */
917 ret
= ((struct xcoff_link_hash_entry
*)
918 _bfd_link_hash_newfunc ((struct bfd_hash_entry
*) ret
,
922 /* Set local fields. */
924 ret
->toc_section
= NULL
;
925 ret
->u
.toc_indx
= -1;
926 ret
->descriptor
= NULL
;
930 ret
->smclas
= XMC_UA
;
933 return (struct bfd_hash_entry
*) ret
;
936 /* Create a XCOFF link hash table. */
938 struct bfd_link_hash_table
*
939 _bfd_xcoff_bfd_link_hash_table_create (abfd
)
942 struct xcoff_link_hash_table
*ret
;
944 ret
= ((struct xcoff_link_hash_table
*)
945 bfd_alloc (abfd
, sizeof (struct xcoff_link_hash_table
)));
946 if (ret
== (struct xcoff_link_hash_table
*) NULL
)
947 return (struct bfd_link_hash_table
*) NULL
;
948 if (! _bfd_link_hash_table_init (&ret
->root
, abfd
, xcoff_link_hash_newfunc
))
950 bfd_release (abfd
, ret
);
951 return (struct bfd_link_hash_table
*) NULL
;
954 ret
->debug_strtab
= _bfd_xcoff_stringtab_init ();
955 ret
->debug_section
= NULL
;
956 ret
->loader_section
= NULL
;
957 ret
->ldrel_count
= 0;
958 memset (&ret
->ldhdr
, 0, sizeof (struct internal_ldhdr
));
959 ret
->linkage_section
= NULL
;
960 ret
->toc_section
= NULL
;
961 ret
->descriptor_section
= NULL
;
966 memset (ret
->special_sections
, 0, sizeof ret
->special_sections
);
968 /* The linker will always generate a full a.out header. We need to
969 record that fact now, before the sizeof_headers routine could be
971 xcoff_data (abfd
)->full_aouthdr
= true;
976 /* Look up an entry in an XCOFF link hash table. */
978 #define xcoff_link_hash_lookup(table, string, create, copy, follow) \
979 ((struct xcoff_link_hash_entry *) \
980 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\
983 /* Traverse an XCOFF link hash table. */
985 #define xcoff_link_hash_traverse(table, func, info) \
986 (bfd_link_hash_traverse \
988 (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \
991 /* Get the XCOFF link hash table from the info structure. This is
994 #define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash))
996 /* Read internal relocs for an XCOFF csect. This is a wrapper around
997 _bfd_coff_read_internal_relocs which tries to take advantage of any
998 relocs which may have been cached for the enclosing section. */
1000 static struct internal_reloc
*
1001 xcoff_read_internal_relocs (abfd
, sec
, cache
, external_relocs
,
1002 require_internal
, internal_relocs
)
1006 bfd_byte
*external_relocs
;
1007 boolean require_internal
;
1008 struct internal_reloc
*internal_relocs
;
1010 if (coff_section_data (abfd
, sec
) != NULL
1011 && coff_section_data (abfd
, sec
)->relocs
== NULL
1012 && xcoff_section_data (abfd
, sec
) != NULL
)
1014 asection
*enclosing
;
1016 enclosing
= xcoff_section_data (abfd
, sec
)->enclosing
;
1018 if (enclosing
!= NULL
1019 && (coff_section_data (abfd
, enclosing
) == NULL
1020 || coff_section_data (abfd
, enclosing
)->relocs
== NULL
)
1022 && enclosing
->reloc_count
> 0)
1024 if (_bfd_coff_read_internal_relocs (abfd
, enclosing
, true,
1025 external_relocs
, false,
1026 (struct internal_reloc
*) NULL
)
1031 if (enclosing
!= NULL
1032 && coff_section_data (abfd
, enclosing
) != NULL
1033 && coff_section_data (abfd
, enclosing
)->relocs
!= NULL
)
1037 off
= ((sec
->rel_filepos
- enclosing
->rel_filepos
)
1038 / bfd_coff_relsz (abfd
));
1039 if (! require_internal
)
1040 return coff_section_data (abfd
, enclosing
)->relocs
+ off
;
1041 memcpy (internal_relocs
,
1042 coff_section_data (abfd
, enclosing
)->relocs
+ off
,
1043 sec
->reloc_count
* sizeof (struct internal_reloc
));
1044 return internal_relocs
;
1048 return _bfd_coff_read_internal_relocs (abfd
, sec
, cache
, external_relocs
,
1049 require_internal
, internal_relocs
);
1052 /* Given an XCOFF BFD, add symbols to the global hash table as
1056 _bfd_xcoff_bfd_link_add_symbols (abfd
, info
)
1058 struct bfd_link_info
*info
;
1060 switch (bfd_get_format (abfd
))
1063 return xcoff_link_add_object_symbols (abfd
, info
);
1065 /* We need to look through the archive for stripped dynamic
1066 objects, because they will not appear in the archive map even
1067 though they should, perhaps, be included. */
1071 member
= bfd_openr_next_archived_file (abfd
, (bfd
*) NULL
);
1072 while (member
!= NULL
)
1074 if (bfd_check_format (member
, bfd_object
)
1075 && (member
->flags
& DYNAMIC
) != 0
1076 && (member
->flags
& HAS_SYMS
) == 0)
1080 if (! xcoff_link_check_archive_element (member
, info
, &needed
))
1083 member
->archive_pass
= -1;
1085 member
= bfd_openr_next_archived_file (abfd
, member
);
1088 /* Now do the usual search. */
1089 return (_bfd_generic_link_add_archive_symbols
1090 (abfd
, info
, xcoff_link_check_archive_element
));
1094 bfd_set_error (bfd_error_wrong_format
);
1099 /* Add symbols from an XCOFF object file. */
1102 xcoff_link_add_object_symbols (abfd
, info
)
1104 struct bfd_link_info
*info
;
1106 if (! _bfd_coff_get_external_symbols (abfd
))
1108 if (! xcoff_link_add_symbols (abfd
, info
))
1110 if (! info
->keep_memory
)
1112 if (! _bfd_coff_free_symbols (abfd
))
1118 /* Check a single archive element to see if we need to include it in
1119 the link. *PNEEDED is set according to whether this element is
1120 needed in the link or not. This is called via
1121 _bfd_generic_link_add_archive_symbols. */
1124 xcoff_link_check_archive_element (abfd
, info
, pneeded
)
1126 struct bfd_link_info
*info
;
1129 if (! _bfd_coff_get_external_symbols (abfd
))
1132 if (! xcoff_link_check_ar_symbols (abfd
, info
, pneeded
))
1137 if (! xcoff_link_add_symbols (abfd
, info
))
1141 if (! info
->keep_memory
|| ! *pneeded
)
1143 if (! _bfd_coff_free_symbols (abfd
))
1150 /* Look through the symbols to see if this object file should be
1151 included in the link. */
1154 xcoff_link_check_ar_symbols (abfd
, info
, pneeded
)
1156 struct bfd_link_info
*info
;
1159 bfd_size_type symesz
;
1165 if ((abfd
->flags
& DYNAMIC
) != 0
1166 && ! info
->static_link
1167 && info
->hash
->creator
== abfd
->xvec
)
1168 return xcoff_link_check_dynamic_ar_symbols (abfd
, info
, pneeded
);
1170 symesz
= bfd_coff_symesz (abfd
);
1171 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
1172 esym_end
= esym
+ obj_raw_syment_count (abfd
) * symesz
;
1173 while (esym
< esym_end
)
1175 struct internal_syment sym
;
1177 bfd_coff_swap_sym_in (abfd
, (PTR
) esym
, (PTR
) &sym
);
1179 if (sym
.n_sclass
== C_EXT
&& sym
.n_scnum
!= N_UNDEF
)
1182 char buf
[SYMNMLEN
+ 1];
1183 struct bfd_link_hash_entry
*h
;
1185 /* This symbol is externally visible, and is defined by this
1188 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
1191 h
= bfd_link_hash_lookup (info
->hash
, name
, false, false, true);
1193 /* We are only interested in symbols that are currently
1194 undefined. If a symbol is currently known to be common,
1195 XCOFF linkers do not bring in an object file which
1196 defines it. We also don't bring in symbols to satisfy
1197 undefined references in shared objects. */
1198 if (h
!= (struct bfd_link_hash_entry
*) NULL
1199 && h
->type
== bfd_link_hash_undefined
)
1201 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
1208 esym
+= (sym
.n_numaux
+ 1) * symesz
;
1211 /* We do not need this object file. */
1215 /* Look through the loader symbols to see if this dynamic object
1216 should be included in the link. The native linker uses the loader
1217 symbols, not the normal symbol table, so we do too. */
1220 xcoff_link_check_dynamic_ar_symbols (abfd
, info
, pneeded
)
1222 struct bfd_link_info
*info
;
1227 struct internal_ldhdr ldhdr
;
1228 const char *strings
;
1229 struct external_ldsym
*elsym
, *elsymend
;
1233 lsec
= bfd_get_section_by_name (abfd
, ".loader");
1236 /* There are no symbols, so don't try to include it. */
1240 if (! xcoff_get_section_contents (abfd
, lsec
))
1242 buf
= coff_section_data (abfd
, lsec
)->contents
;
1244 xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) buf
, &ldhdr
);
1246 strings
= (char *) buf
+ ldhdr
.l_stoff
;
1248 elsym
= (struct external_ldsym
*) (buf
+ LDHDRSZ
);
1249 elsymend
= elsym
+ ldhdr
.l_nsyms
;
1250 for (; elsym
< elsymend
; elsym
++)
1252 struct internal_ldsym ldsym
;
1253 char nambuf
[SYMNMLEN
+ 1];
1255 struct bfd_link_hash_entry
*h
;
1257 xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
1259 /* We are only interested in exported symbols. */
1260 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
1263 if (ldsym
._l
._l_l
._l_zeroes
== 0)
1264 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
1267 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
1268 nambuf
[SYMNMLEN
] = '\0';
1272 h
= bfd_link_hash_lookup (info
->hash
, name
, false, false, true);
1274 /* We are only interested in symbols that are currently
1276 if (h
!= NULL
&& h
->type
== bfd_link_hash_undefined
)
1278 if (! (*info
->callbacks
->add_archive_element
) (info
, abfd
, name
))
1285 /* We do not need this shared object. */
1287 if (buf
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
1289 free (coff_section_data (abfd
, lsec
)->contents
);
1290 coff_section_data (abfd
, lsec
)->contents
= NULL
;
1296 /* Returns the index of reloc in RELOCS with the least address greater
1297 than or equal to ADDRESS. The relocs are sorted by address. */
1299 static bfd_size_type
1300 xcoff_find_reloc (relocs
, count
, address
)
1301 struct internal_reloc
*relocs
;
1302 bfd_size_type count
;
1305 bfd_size_type min
, max
, this;
1309 if (count
== 1 && relocs
[0].r_vaddr
< address
)
1318 /* Do a binary search over (min,max]. */
1319 while (min
+ 1 < max
)
1323 this = (max
+ min
) / 2;
1324 raddr
= relocs
[this].r_vaddr
;
1325 if (raddr
> address
)
1327 else if (raddr
< address
)
1336 if (relocs
[min
].r_vaddr
< address
)
1340 && relocs
[min
- 1].r_vaddr
== address
)
1346 /* Add all the symbols from an object file to the hash table.
1348 XCOFF is a weird format. A normal XCOFF .o files will have three
1349 COFF sections--.text, .data, and .bss--but each COFF section will
1350 contain many csects. These csects are described in the symbol
1351 table. From the linker's point of view, each csect must be
1352 considered a section in its own right. For example, a TOC entry is
1353 handled as a small XMC_TC csect. The linker must be able to merge
1354 different TOC entries together, which means that it must be able to
1355 extract the XMC_TC csects from the .data section of the input .o
1358 From the point of view of our linker, this is, of course, a hideous
1359 nightmare. We cope by actually creating sections for each csect,
1360 and discarding the original sections. We then have to handle the
1361 relocation entries carefully, since the only way to tell which
1362 csect they belong to is to examine the address. */
1365 xcoff_link_add_symbols (abfd
, info
)
1367 struct bfd_link_info
*info
;
1369 unsigned int n_tmask
;
1370 unsigned int n_btshft
;
1371 boolean default_copy
;
1372 bfd_size_type symcount
;
1373 struct xcoff_link_hash_entry
**sym_hash
;
1374 asection
**csect_cache
;
1375 bfd_size_type linesz
;
1377 asection
*last_real
;
1380 unsigned int csect_index
;
1381 asection
*first_csect
;
1382 bfd_size_type symesz
;
1385 struct reloc_info_struct
1387 struct internal_reloc
*relocs
;
1390 } *reloc_info
= NULL
;
1392 if ((abfd
->flags
& DYNAMIC
) != 0
1393 && ! info
->static_link
)
1395 if (! xcoff_link_add_dynamic_symbols (abfd
, info
))
1399 /* We need to build a .loader section, so we do it here. This won't
1400 work if we're producing an XCOFF output file with no XCOFF input
1402 if (xcoff_hash_table (info
)->loader_section
== NULL
)
1406 lsec
= bfd_make_section_anyway (abfd
, ".loader");
1409 xcoff_hash_table (info
)->loader_section
= lsec
;
1410 lsec
->flags
|= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1412 /* Likewise for the linkage section. */
1413 if (xcoff_hash_table (info
)->linkage_section
== NULL
)
1417 lsec
= bfd_make_section_anyway (abfd
, ".gl");
1420 xcoff_hash_table (info
)->linkage_section
= lsec
;
1421 lsec
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1422 lsec
->alignment_power
= 2;
1424 /* Likewise for the TOC section. */
1425 if (xcoff_hash_table (info
)->toc_section
== NULL
)
1429 tsec
= bfd_make_section_anyway (abfd
, ".tc");
1432 xcoff_hash_table (info
)->toc_section
= tsec
;
1433 tsec
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1434 tsec
->alignment_power
= 2;
1436 /* Likewise for the descriptor section. */
1437 if (xcoff_hash_table (info
)->descriptor_section
== NULL
)
1441 dsec
= bfd_make_section_anyway (abfd
, ".ds");
1444 xcoff_hash_table (info
)->descriptor_section
= dsec
;
1445 dsec
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1446 dsec
->alignment_power
= 2;
1448 /* Likewise for the .debug section. */
1449 if (xcoff_hash_table (info
)->debug_section
== NULL
)
1453 dsec
= bfd_make_section_anyway (abfd
, ".debug");
1456 xcoff_hash_table (info
)->debug_section
= dsec
;
1457 dsec
->flags
|= SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1460 if ((abfd
->flags
& DYNAMIC
) != 0
1461 && ! info
->static_link
)
1464 n_tmask
= coff_data (abfd
)->local_n_tmask
;
1465 n_btshft
= coff_data (abfd
)->local_n_btshft
;
1467 /* Define macros so that ISFCN, et. al., macros work correctly. */
1468 #define N_TMASK n_tmask
1469 #define N_BTSHFT n_btshft
1471 if (info
->keep_memory
)
1472 default_copy
= false;
1474 default_copy
= true;
1476 symcount
= obj_raw_syment_count (abfd
);
1478 /* We keep a list of the linker hash table entries that correspond
1479 to each external symbol. */
1480 sym_hash
= ((struct xcoff_link_hash_entry
**)
1483 * sizeof (struct xcoff_link_hash_entry
*))));
1484 if (sym_hash
== NULL
&& symcount
!= 0)
1486 coff_data (abfd
)->sym_hashes
= (struct coff_link_hash_entry
**) sym_hash
;
1487 memset (sym_hash
, 0,
1488 (size_t) symcount
* sizeof (struct xcoff_link_hash_entry
*));
1490 /* Because of the weird stuff we are doing with XCOFF csects, we can
1491 not easily determine which section a symbol is in, so we store
1492 the information in the tdata for the input file. */
1493 csect_cache
= ((asection
**)
1494 bfd_alloc (abfd
, symcount
* sizeof (asection
*)));
1495 if (csect_cache
== NULL
&& symcount
!= 0)
1497 xcoff_data (abfd
)->csects
= csect_cache
;
1498 memset (csect_cache
, 0, (size_t) symcount
* sizeof (asection
*));
1500 /* While splitting sections into csects, we need to assign the
1501 relocs correctly. The relocs and the csects must both be in
1502 order by VMA within a given section, so we handle this by
1503 scanning along the relocs as we process the csects. We index
1504 into reloc_info using the section target_index. */
1505 reloc_info
= ((struct reloc_info_struct
*)
1506 bfd_malloc ((abfd
->section_count
+ 1)
1507 * sizeof (struct reloc_info_struct
)));
1508 if (reloc_info
== NULL
)
1510 memset ((PTR
) reloc_info
, 0,
1511 (abfd
->section_count
+ 1) * sizeof (struct reloc_info_struct
));
1513 /* Read in the relocs and line numbers for each section. */
1514 linesz
= bfd_coff_linesz (abfd
);
1516 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
1519 if ((o
->flags
& SEC_RELOC
) != 0)
1521 reloc_info
[o
->target_index
].relocs
=
1522 xcoff_read_internal_relocs (abfd
, o
, true, (bfd_byte
*) NULL
,
1523 false, (struct internal_reloc
*) NULL
);
1524 reloc_info
[o
->target_index
].csects
=
1525 (asection
**) bfd_malloc (o
->reloc_count
* sizeof (asection
*));
1526 if (reloc_info
[o
->target_index
].csects
== NULL
)
1528 memset (reloc_info
[o
->target_index
].csects
, 0,
1529 o
->reloc_count
* sizeof (asection
*));
1532 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1533 && o
->lineno_count
> 0)
1537 linenos
= (bfd_byte
*) bfd_malloc (o
->lineno_count
* linesz
);
1538 if (linenos
== NULL
)
1540 reloc_info
[o
->target_index
].linenos
= linenos
;
1541 if (bfd_seek (abfd
, o
->line_filepos
, SEEK_SET
) != 0
1542 || (bfd_read (linenos
, linesz
, o
->lineno_count
, abfd
)
1543 != linesz
* o
->lineno_count
))
1548 /* Don't let the linker relocation routines discard the symbols. */
1549 keep_syms
= obj_coff_keep_syms (abfd
);
1550 obj_coff_keep_syms (abfd
) = true;
1556 symesz
= bfd_coff_symesz (abfd
);
1557 BFD_ASSERT (symesz
== bfd_coff_auxesz (abfd
));
1558 esym
= (bfd_byte
*) obj_coff_external_syms (abfd
);
1559 esym_end
= esym
+ symcount
* symesz
;
1560 while (esym
< esym_end
)
1562 struct internal_syment sym
;
1563 union internal_auxent aux
;
1565 char buf
[SYMNMLEN
+ 1];
1570 struct xcoff_link_hash_entry
*set_toc
;
1572 bfd_coff_swap_sym_in (abfd
, (PTR
) esym
, (PTR
) &sym
);
1574 /* In this pass we are only interested in symbols with csect
1576 if (sym
.n_sclass
!= C_EXT
&& sym
.n_sclass
!= C_HIDEXT
)
1578 if (sym
.n_sclass
== C_FILE
&& csect
!= NULL
)
1580 xcoff_section_data (abfd
, csect
)->last_symndx
=
1582 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1588 *csect_cache
= csect
;
1589 else if (first_csect
== NULL
|| sym
.n_sclass
== C_FILE
)
1590 *csect_cache
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1592 *csect_cache
= NULL
;
1593 esym
+= (sym
.n_numaux
+ 1) * symesz
;
1594 sym_hash
+= sym
.n_numaux
+ 1;
1595 csect_cache
+= sym
.n_numaux
+ 1;
1599 name
= _bfd_coff_internal_syment_name (abfd
, &sym
, buf
);
1603 /* If this symbol has line number information attached to it,
1604 and we're not stripping it, count the number of entries and
1605 add them to the count for this csect. In the final link pass
1606 we are going to attach line number information by symbol,
1607 rather than by section, in order to more easily handle
1608 garbage collection. */
1609 if ((info
->strip
== strip_none
|| info
->strip
== strip_some
)
1612 && ISFCN (sym
.n_type
))
1614 union internal_auxent auxlin
;
1616 bfd_coff_swap_aux_in (abfd
, (PTR
) (esym
+ symesz
),
1617 sym
.n_type
, sym
.n_sclass
,
1618 0, sym
.n_numaux
, (PTR
) &auxlin
);
1619 if (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
1621 asection
*enclosing
;
1622 bfd_size_type linoff
;
1624 enclosing
= xcoff_section_data (abfd
, csect
)->enclosing
;
1625 if (enclosing
== NULL
)
1627 (*_bfd_error_handler
)
1628 ("%s: `%s' has line numbers but no enclosing section",
1629 bfd_get_filename (abfd
), name
);
1630 bfd_set_error (bfd_error_bad_value
);
1633 linoff
= (auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
1634 - enclosing
->line_filepos
);
1635 if (linoff
< enclosing
->lineno_count
* linesz
)
1637 struct internal_lineno lin
;
1638 bfd_byte
*linpstart
;
1640 linpstart
= (reloc_info
[enclosing
->target_index
].linenos
1642 bfd_coff_swap_lineno_in (abfd
, (PTR
) linpstart
, (PTR
) &lin
);
1644 && ((bfd_size_type
) lin
.l_addr
.l_symndx
1646 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1649 bfd_byte
*linpend
, *linp
;
1651 linpend
= (reloc_info
[enclosing
->target_index
].linenos
1652 + enclosing
->lineno_count
* linesz
);
1653 for (linp
= linpstart
+ linesz
;
1657 bfd_coff_swap_lineno_in (abfd
, (PTR
) linp
,
1659 if (lin
.l_lnno
== 0)
1662 csect
->lineno_count
+= (linp
- linpstart
) / linesz
;
1663 /* The setting of line_filepos will only be
1664 useful if all the line number entries for a
1665 csect are contiguous; this only matters for
1667 if (csect
->line_filepos
== 0)
1668 csect
->line_filepos
=
1669 auxlin
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
;
1675 /* Pick up the csect auxiliary information. */
1677 if (sym
.n_numaux
== 0)
1679 (*_bfd_error_handler
)
1680 ("%s: class %d symbol `%s' has no aux entries",
1681 bfd_get_filename (abfd
), sym
.n_sclass
, name
);
1682 bfd_set_error (bfd_error_bad_value
);
1686 bfd_coff_swap_aux_in (abfd
,
1687 (PTR
) (esym
+ symesz
* sym
.n_numaux
),
1688 sym
.n_type
, sym
.n_sclass
,
1689 sym
.n_numaux
- 1, sym
.n_numaux
,
1692 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
1702 (*_bfd_error_handler
)
1703 ("%s: symbol `%s' has unrecognized csect type %d",
1704 bfd_get_filename (abfd
), name
, smtyp
);
1705 bfd_set_error (bfd_error_bad_value
);
1709 /* This is an external reference. */
1710 if (sym
.n_sclass
== C_HIDEXT
1711 || sym
.n_scnum
!= N_UNDEF
1712 || aux
.x_csect
.x_scnlen
.l
!= 0)
1714 (*_bfd_error_handler
)
1715 ("%s: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d",
1716 bfd_get_filename (abfd
), name
, sym
.n_sclass
, sym
.n_scnum
,
1717 aux
.x_csect
.x_scnlen
.l
);
1718 bfd_set_error (bfd_error_bad_value
);
1722 /* An XMC_XO external reference is actually a reference to
1723 an absolute location. */
1724 if (aux
.x_csect
.x_smclas
!= XMC_XO
)
1725 section
= bfd_und_section_ptr
;
1728 section
= bfd_abs_section_ptr
;
1729 value
= sym
.n_value
;
1734 /* This is a csect definition. */
1738 xcoff_section_data (abfd
, csect
)->last_symndx
=
1740 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1747 /* When we see a TOC anchor, we record the TOC value. */
1748 if (aux
.x_csect
.x_smclas
== XMC_TC0
)
1750 if (sym
.n_sclass
!= C_HIDEXT
1751 || aux
.x_csect
.x_scnlen
.l
!= 0)
1753 (*_bfd_error_handler
)
1754 ("%s: XMC_TC0 symbol `%s' is class %d scnlen %d",
1755 bfd_get_filename (abfd
), name
, sym
.n_sclass
,
1756 aux
.x_csect
.x_scnlen
.l
);
1757 bfd_set_error (bfd_error_bad_value
);
1760 xcoff_data (abfd
)->toc
= sym
.n_value
;
1763 /* We must merge TOC entries for the same symbol. We can
1764 merge two TOC entries if they are both C_HIDEXT, they
1765 both have the same name, they are both 4 bytes long, and
1766 they both have a relocation table entry for an external
1767 symbol with the same name. Unfortunately, this means
1768 that we must look through the relocations. Ick. */
1769 if (aux
.x_csect
.x_smclas
== XMC_TC
1770 && sym
.n_sclass
== C_HIDEXT
1771 && aux
.x_csect
.x_scnlen
.l
== 4
1772 && info
->hash
->creator
== abfd
->xvec
)
1774 asection
*enclosing
;
1775 struct internal_reloc
*relocs
;
1776 bfd_size_type relindx
;
1777 struct internal_reloc
*rel
;
1779 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1780 if (enclosing
== NULL
)
1783 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1784 relindx
= xcoff_find_reloc (relocs
, enclosing
->reloc_count
,
1786 rel
= relocs
+ relindx
;
1787 if (relindx
< enclosing
->reloc_count
1788 && rel
->r_vaddr
== (bfd_vma
) sym
.n_value
1789 && rel
->r_size
== 31
1790 && rel
->r_type
== R_POS
)
1793 struct internal_syment relsym
;
1795 erelsym
= ((bfd_byte
*) obj_coff_external_syms (abfd
)
1796 + rel
->r_symndx
* symesz
);
1797 bfd_coff_swap_sym_in (abfd
, (PTR
) erelsym
, (PTR
) &relsym
);
1798 if (relsym
.n_sclass
== C_EXT
)
1800 const char *relname
;
1801 char relbuf
[SYMNMLEN
+ 1];
1803 struct xcoff_link_hash_entry
*h
;
1805 /* At this point we know that the TOC entry is
1806 for an externally visible symbol. */
1807 relname
= _bfd_coff_internal_syment_name (abfd
, &relsym
,
1809 if (relname
== NULL
)
1812 /* We only merge TOC entries if the TC name is
1813 the same as the symbol name. This handles
1814 the normal case, but not common cases like
1815 SYM.P4 which gcc generates to store SYM + 4
1816 in the TOC. FIXME. */
1817 if (strcmp (name
, relname
) == 0)
1819 copy
= (! info
->keep_memory
1820 || relsym
._n
._n_n
._n_zeroes
!= 0
1821 || relsym
._n
._n_n
._n_offset
== 0);
1822 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
1823 relname
, true, copy
,
1828 /* At this point h->root.type could be
1829 bfd_link_hash_new. That should be OK,
1830 since we know for sure that we will come
1831 across this symbol as we step through the
1834 /* We store h in *sym_hash for the
1835 convenience of the relocate_section
1839 if (h
->toc_section
!= NULL
)
1841 asection
**rel_csects
;
1843 /* We already have a TOC entry for this
1844 symbol, so we can just ignore this
1847 reloc_info
[enclosing
->target_index
].csects
;
1848 rel_csects
[relindx
] = bfd_und_section_ptr
;
1852 /* We are about to create a TOC entry for
1860 /* We need to create a new section. We get the name from
1861 the csect storage mapping class, so that the linker can
1862 accumulate similar csects together. */
1864 static const char *csect_name_by_class
[] =
1866 ".pr", ".ro", ".db", ".tc", ".ua", ".rw", ".gl", ".xo",
1867 ".sv", ".bs", ".ds", ".uc", ".ti", ".tb", NULL
, ".tc0",
1870 const char *csect_name
;
1871 asection
*enclosing
;
1873 if ((aux
.x_csect
.x_smclas
>=
1874 sizeof csect_name_by_class
/ sizeof csect_name_by_class
[0])
1875 || csect_name_by_class
[aux
.x_csect
.x_smclas
] == NULL
)
1877 (*_bfd_error_handler
)
1878 ("%s: symbol `%s' has unrecognized smclas %d",
1879 bfd_get_filename (abfd
), name
, aux
.x_csect
.x_smclas
);
1880 bfd_set_error (bfd_error_bad_value
);
1884 csect_name
= csect_name_by_class
[aux
.x_csect
.x_smclas
];
1885 csect
= bfd_make_section_anyway (abfd
, csect_name
);
1888 enclosing
= coff_section_from_bfd_index (abfd
, sym
.n_scnum
);
1889 if (enclosing
== NULL
)
1891 if (! bfd_is_abs_section (enclosing
)
1892 && ((bfd_vma
) sym
.n_value
< enclosing
->vma
1893 || ((bfd_vma
) sym
.n_value
+ aux
.x_csect
.x_scnlen
.l
1894 > enclosing
->vma
+ enclosing
->_raw_size
)))
1896 (*_bfd_error_handler
)
1897 ("%s: csect `%s' not in enclosing section",
1898 bfd_get_filename (abfd
), name
);
1899 bfd_set_error (bfd_error_bad_value
);
1902 csect
->vma
= sym
.n_value
;
1903 csect
->filepos
= (enclosing
->filepos
1906 csect
->_raw_size
= aux
.x_csect
.x_scnlen
.l
;
1907 csect
->flags
|= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
;
1908 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
1910 /* Record the enclosing section in the tdata for this new
1912 csect
->used_by_bfd
=
1913 ((struct coff_section_tdata
*)
1914 bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
)));
1915 if (csect
->used_by_bfd
== NULL
)
1917 coff_section_data (abfd
, csect
)->tdata
=
1918 bfd_zalloc (abfd
, sizeof (struct xcoff_section_tdata
));
1919 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
1921 xcoff_section_data (abfd
, csect
)->enclosing
= enclosing
;
1922 xcoff_section_data (abfd
, csect
)->lineno_count
=
1923 enclosing
->lineno_count
;
1925 if (enclosing
->owner
== abfd
)
1927 struct internal_reloc
*relocs
;
1928 bfd_size_type relindx
;
1929 struct internal_reloc
*rel
;
1930 asection
**rel_csect
;
1932 relocs
= reloc_info
[enclosing
->target_index
].relocs
;
1933 relindx
= xcoff_find_reloc (relocs
, enclosing
->reloc_count
,
1935 rel
= relocs
+ relindx
;
1936 rel_csect
= (reloc_info
[enclosing
->target_index
].csects
1938 csect
->rel_filepos
= (enclosing
->rel_filepos
1939 + relindx
* bfd_coff_relsz (abfd
));
1940 while (relindx
< enclosing
->reloc_count
1941 && *rel_csect
== NULL
1942 && rel
->r_vaddr
< csect
->vma
+ csect
->_raw_size
)
1945 csect
->flags
|= SEC_RELOC
;
1946 ++csect
->reloc_count
;
1953 /* There are a number of other fields and section flags
1954 which we do not bother to set. */
1956 csect_index
= ((esym
1957 - (bfd_byte
*) obj_coff_external_syms (abfd
))
1960 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
1962 if (first_csect
== NULL
)
1963 first_csect
= csect
;
1965 /* If this symbol is C_EXT, we treat it as starting at the
1966 beginning of the newly created section. */
1967 if (sym
.n_sclass
== C_EXT
)
1973 /* If this is a TOC section for a symbol, record it. */
1974 if (set_toc
!= NULL
)
1975 set_toc
->toc_section
= csect
;
1980 /* This is a label definition. The x_scnlen field is the
1981 symbol index of the csect. I believe that this must
1982 always follow the appropriate XTY_SD symbol, so I will
1988 if (aux
.x_csect
.x_scnlen
.l
< 0
1989 || (aux
.x_csect
.x_scnlen
.l
1990 >= esym
- (bfd_byte
*) obj_coff_external_syms (abfd
)))
1994 section
= xcoff_data (abfd
)->csects
[aux
.x_csect
.x_scnlen
.l
];
1996 || (section
->flags
& SEC_HAS_CONTENTS
) == 0)
2001 (*_bfd_error_handler
)
2002 ("%s: misplaced XTY_LD `%s'",
2003 bfd_get_filename (abfd
), name
);
2004 bfd_set_error (bfd_error_bad_value
);
2008 value
= sym
.n_value
- csect
->vma
;
2013 /* This is an unitialized csect. We could base the name on
2014 the storage mapping class, but we don't bother. If this
2015 csect is externally visible, it is a common symbol. */
2019 xcoff_section_data (abfd
, csect
)->last_symndx
=
2021 - (bfd_byte
*) obj_coff_external_syms (abfd
))
2025 csect
= bfd_make_section_anyway (abfd
, ".bss");
2028 csect
->vma
= sym
.n_value
;
2029 csect
->_raw_size
= aux
.x_csect
.x_scnlen
.l
;
2030 csect
->flags
|= SEC_ALLOC
;
2031 csect
->alignment_power
= SMTYP_ALIGN (aux
.x_csect
.x_smtyp
);
2032 /* There are a number of other fields and section flags
2033 which we do not bother to set. */
2035 csect_index
= ((esym
2036 - (bfd_byte
*) obj_coff_external_syms (abfd
))
2039 csect
->used_by_bfd
=
2040 ((struct coff_section_tdata
*)
2041 bfd_zalloc (abfd
, sizeof (struct coff_section_tdata
)));
2042 if (csect
->used_by_bfd
== NULL
)
2044 coff_section_data (abfd
, csect
)->tdata
=
2045 bfd_zalloc (abfd
, sizeof (struct xcoff_section_tdata
));
2046 if (coff_section_data (abfd
, csect
)->tdata
== NULL
)
2048 xcoff_section_data (abfd
, csect
)->first_symndx
= csect_index
;
2050 if (first_csect
== NULL
)
2051 first_csect
= csect
;
2053 if (sym
.n_sclass
== C_EXT
)
2055 csect
->flags
|= SEC_IS_COMMON
;
2056 csect
->_raw_size
= 0;
2058 value
= aux
.x_csect
.x_scnlen
.l
;
2064 /* Check for magic symbol names. */
2065 if ((smtyp
== XTY_SD
|| smtyp
== XTY_CM
)
2066 && aux
.x_csect
.x_smclas
!= XMC_TC
)
2073 if (strcmp (name
, "_text") == 0)
2075 else if (strcmp (name
, "_etext") == 0)
2077 else if (strcmp (name
, "_data") == 0)
2079 else if (strcmp (name
, "_edata") == 0)
2081 else if (strcmp (name
, "_end") == 0)
2084 else if (name
[0] == 'e' && strcmp (name
, "end") == 0)
2088 xcoff_hash_table (info
)->special_sections
[i
] = csect
;
2091 /* Now we have enough information to add the symbol to the
2092 linker hash table. */
2094 if (sym
.n_sclass
== C_EXT
)
2098 BFD_ASSERT (section
!= NULL
);
2100 /* We must copy the name into memory if we got it from the
2101 syment itself, rather than the string table. */
2102 copy
= default_copy
;
2103 if (sym
._n
._n_n
._n_zeroes
!= 0
2104 || sym
._n
._n_n
._n_offset
== 0)
2107 if (info
->hash
->creator
== abfd
->xvec
)
2109 /* If we are statically linking a shared object, it is
2110 OK for symbol redefinitions to occur. I can't figure
2111 out just what the XCOFF linker is doing, but
2112 something like this is required for -bnso to work. */
2113 if (! bfd_is_und_section (section
))
2114 *sym_hash
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2115 name
, true, copy
, false);
2117 *sym_hash
= ((struct xcoff_link_hash_entry
*)
2118 bfd_wrapped_link_hash_lookup (abfd
, info
, name
,
2119 true, copy
, false));
2120 if (*sym_hash
== NULL
)
2122 if (((*sym_hash
)->root
.type
== bfd_link_hash_defined
2123 || (*sym_hash
)->root
.type
== bfd_link_hash_defweak
)
2124 && ! bfd_is_und_section (section
)
2125 && ! bfd_is_com_section (section
))
2127 if ((abfd
->flags
& DYNAMIC
) != 0)
2129 section
= bfd_und_section_ptr
;
2132 else if (((*sym_hash
)->root
.u
.def
.section
->owner
->flags
2135 (*sym_hash
)->root
.type
= bfd_link_hash_undefined
;
2136 (*sym_hash
)->root
.u
.undef
.abfd
=
2137 (*sym_hash
)->root
.u
.def
.section
->owner
;
2142 /* _bfd_generic_link_add_one_symbol may call the linker to
2143 generate an error message, and the linker may try to read
2144 the symbol table to give a good error. Right now, the
2145 line numbers are in an inconsistent state, since they are
2146 counted both in the real sections and in the new csects.
2147 We need to leave the count in the real sections so that
2148 the linker can report the line number of the error
2149 correctly, so temporarily clobber the link to the csects
2150 so that the linker will not try to read the line numbers
2151 a second time from the csects. */
2152 BFD_ASSERT (last_real
->next
== first_csect
);
2153 last_real
->next
= NULL
;
2154 if (! (_bfd_generic_link_add_one_symbol
2155 (info
, abfd
, name
, flags
, section
, value
,
2156 (const char *) NULL
, copy
, true,
2157 (struct bfd_link_hash_entry
**) sym_hash
)))
2159 last_real
->next
= first_csect
;
2161 if (smtyp
== XTY_CM
)
2163 if ((*sym_hash
)->root
.type
!= bfd_link_hash_common
2164 || (*sym_hash
)->root
.u
.c
.p
->section
!= csect
)
2166 /* We don't need the common csect we just created. */
2167 csect
->_raw_size
= 0;
2171 (*sym_hash
)->root
.u
.c
.p
->alignment_power
2172 = csect
->alignment_power
;
2176 if (info
->hash
->creator
== abfd
->xvec
)
2180 if (smtyp
== XTY_ER
|| smtyp
== XTY_CM
)
2181 flag
= XCOFF_REF_REGULAR
;
2183 flag
= XCOFF_DEF_REGULAR
;
2184 (*sym_hash
)->flags
|= flag
;
2186 if ((*sym_hash
)->smclas
== XMC_UA
2187 || flag
== XCOFF_DEF_REGULAR
)
2188 (*sym_hash
)->smclas
= aux
.x_csect
.x_smclas
;
2192 *csect_cache
= csect
;
2194 esym
+= (sym
.n_numaux
+ 1) * symesz
;
2195 sym_hash
+= sym
.n_numaux
+ 1;
2196 csect_cache
+= sym
.n_numaux
+ 1;
2199 BFD_ASSERT (last_real
== NULL
|| last_real
->next
== first_csect
);
2201 /* Make sure that we have seen all the relocs. */
2202 for (o
= abfd
->sections
; o
!= first_csect
; o
= o
->next
)
2204 /* Reset the section size and the line numebr count, since the
2205 data is now attached to the csects. Don't reset the size of
2206 the .debug section, since we need to read it below in
2207 bfd_xcoff_size_dynamic_sections. */
2208 if (strcmp (bfd_get_section_name (abfd
, o
), ".debug") != 0)
2210 o
->lineno_count
= 0;
2212 if ((o
->flags
& SEC_RELOC
) != 0)
2215 struct internal_reloc
*rel
;
2216 asection
**rel_csect
;
2218 rel
= reloc_info
[o
->target_index
].relocs
;
2219 rel_csect
= reloc_info
[o
->target_index
].csects
;
2220 for (i
= 0; i
< o
->reloc_count
; i
++, rel
++, rel_csect
++)
2222 if (*rel_csect
== NULL
)
2224 (*_bfd_error_handler
)
2225 ("%s: reloc %s:%d not in csect",
2226 bfd_get_filename (abfd
), o
->name
, i
);
2227 bfd_set_error (bfd_error_bad_value
);
2231 /* We identify all symbols which are called, so that we
2232 can create glue code for calls to functions imported
2233 from dynamic objects. */
2234 if (info
->hash
->creator
== abfd
->xvec
2235 && *rel_csect
!= bfd_und_section_ptr
2236 && (rel
->r_type
== R_BR
2237 || rel
->r_type
== R_RBR
)
2238 && obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
] != NULL
)
2240 struct xcoff_link_hash_entry
*h
;
2242 h
= obj_xcoff_sym_hashes (abfd
)[rel
->r_symndx
];
2243 h
->flags
|= XCOFF_CALLED
;
2244 /* If the symbol name starts with a period, it is
2245 the code of a function. If the symbol is
2246 currently undefined, then add an undefined symbol
2247 for the function descriptor. This should do no
2248 harm, because any regular object that defines the
2249 function should also define the function
2250 descriptor. It helps, because it means that we
2251 will identify the function descriptor with a
2252 dynamic object if a dynamic object defines it. */
2253 if (h
->root
.root
.string
[0] == '.'
2254 && h
->descriptor
== NULL
)
2256 struct xcoff_link_hash_entry
*hds
;
2258 hds
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2259 h
->root
.root
.string
+ 1,
2263 if (hds
->root
.type
== bfd_link_hash_new
)
2265 if (! (_bfd_generic_link_add_one_symbol
2266 (info
, abfd
, hds
->root
.root
.string
,
2267 (flagword
) 0, bfd_und_section_ptr
,
2268 (bfd_vma
) 0, (const char *) NULL
, false,
2270 (struct bfd_link_hash_entry
**) &hds
)))
2273 hds
->flags
|= XCOFF_DESCRIPTOR
;
2274 BFD_ASSERT ((hds
->flags
& XCOFF_CALLED
) == 0
2275 && (h
->flags
& XCOFF_DESCRIPTOR
) == 0);
2276 hds
->descriptor
= h
;
2277 h
->descriptor
= hds
;
2282 free (reloc_info
[o
->target_index
].csects
);
2283 reloc_info
[o
->target_index
].csects
= NULL
;
2285 /* Reset SEC_RELOC and the reloc_count, since the reloc
2286 information is now attached to the csects. */
2287 o
->flags
&=~ SEC_RELOC
;
2290 /* If we are not keeping memory, free the reloc information. */
2291 if (! info
->keep_memory
2292 && coff_section_data (abfd
, o
) != NULL
2293 && coff_section_data (abfd
, o
)->relocs
!= NULL
2294 && ! coff_section_data (abfd
, o
)->keep_relocs
)
2296 free (coff_section_data (abfd
, o
)->relocs
);
2297 coff_section_data (abfd
, o
)->relocs
= NULL
;
2301 /* Free up the line numbers. FIXME: We could cache these
2302 somewhere for the final link, to avoid reading them again. */
2303 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2305 free (reloc_info
[o
->target_index
].linenos
);
2306 reloc_info
[o
->target_index
].linenos
= NULL
;
2312 obj_coff_keep_syms (abfd
) = keep_syms
;
2317 if (reloc_info
!= NULL
)
2319 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
2321 if (reloc_info
[o
->target_index
].csects
!= NULL
)
2322 free (reloc_info
[o
->target_index
].csects
);
2323 if (reloc_info
[o
->target_index
].linenos
!= NULL
)
2324 free (reloc_info
[o
->target_index
].linenos
);
2328 obj_coff_keep_syms (abfd
) = keep_syms
;
2335 /* This function is used to add symbols from a dynamic object to the
2336 global symbol table. */
2339 xcoff_link_add_dynamic_symbols (abfd
, info
)
2341 struct bfd_link_info
*info
;
2345 struct internal_ldhdr ldhdr
;
2346 const char *strings
;
2347 struct external_ldsym
*elsym
, *elsymend
;
2348 struct xcoff_import_file
*n
;
2353 struct xcoff_import_file
**pp
;
2355 /* We can only handle a dynamic object if we are generating an XCOFF
2357 if (info
->hash
->creator
!= abfd
->xvec
)
2359 (*_bfd_error_handler
)
2360 ("%s: XCOFF shared object when not producing XCOFF output",
2361 bfd_get_filename (abfd
));
2362 bfd_set_error (bfd_error_invalid_operation
);
2366 /* The symbols we use from a dynamic object are not the symbols in
2367 the normal symbol table, but, rather, the symbols in the export
2368 table. If there is a global symbol in a dynamic object which is
2369 not in the export table, the loader will not be able to find it,
2370 so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
2371 libc.a has symbols in the export table which are not in the
2374 /* Read in the .loader section. FIXME: We should really use the
2375 o_snloader field in the a.out header, rather than grabbing the
2377 lsec
= bfd_get_section_by_name (abfd
, ".loader");
2380 (*_bfd_error_handler
)
2381 ("%s: dynamic object with no .loader section",
2382 bfd_get_filename (abfd
));
2383 bfd_set_error (bfd_error_no_symbols
);
2387 if (! xcoff_get_section_contents (abfd
, lsec
))
2389 buf
= coff_section_data (abfd
, lsec
)->contents
;
2391 /* Remove the sections from this object, so that they do not get
2392 included in the link. */
2393 abfd
->sections
= NULL
;
2395 xcoff_swap_ldhdr_in (abfd
, (struct external_ldhdr
*) buf
, &ldhdr
);
2397 strings
= (char *) buf
+ ldhdr
.l_stoff
;
2399 elsym
= (struct external_ldsym
*) (buf
+ LDHDRSZ
);
2400 elsymend
= elsym
+ ldhdr
.l_nsyms
;
2401 BFD_ASSERT (sizeof (struct external_ldsym
) == LDSYMSZ
);
2402 for (; elsym
< elsymend
; elsym
++)
2404 struct internal_ldsym ldsym
;
2405 char nambuf
[SYMNMLEN
+ 1];
2407 struct xcoff_link_hash_entry
*h
;
2409 xcoff_swap_ldsym_in (abfd
, elsym
, &ldsym
);
2411 /* We are only interested in exported symbols. */
2412 if ((ldsym
.l_smtype
& L_EXPORT
) == 0)
2415 if (ldsym
._l
._l_l
._l_zeroes
== 0)
2416 name
= strings
+ ldsym
._l
._l_l
._l_offset
;
2419 memcpy (nambuf
, ldsym
._l
._l_name
, SYMNMLEN
);
2420 nambuf
[SYMNMLEN
] = '\0';
2424 /* Normally we could not call xcoff_link_hash_lookup in an add
2425 symbols routine, since we might not be using an XCOFF hash
2426 table. However, we verified above that we are using an XCOFF
2429 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, true,
2434 h
->flags
|= XCOFF_DEF_DYNAMIC
;
2436 /* If the symbol is undefined, and the BFD it was found in is
2437 not a dynamic object, change the BFD to this dynamic object,
2438 so that we can get the correct import file ID. */
2439 if ((h
->root
.type
== bfd_link_hash_undefined
2440 || h
->root
.type
== bfd_link_hash_undefweak
)
2441 && (h
->root
.u
.undef
.abfd
== NULL
2442 || (h
->root
.u
.undef
.abfd
->flags
& DYNAMIC
) == 0))
2443 h
->root
.u
.undef
.abfd
= abfd
;
2445 if (h
->root
.type
== bfd_link_hash_new
)
2447 h
->root
.type
= bfd_link_hash_undefined
;
2448 h
->root
.u
.undef
.abfd
= abfd
;
2449 /* We do not want to add this to the undefined symbol list. */
2452 if (h
->smclas
== XMC_UA
2453 || h
->root
.type
== bfd_link_hash_undefined
2454 || h
->root
.type
== bfd_link_hash_undefweak
)
2455 h
->smclas
= ldsym
.l_smclas
;
2457 /* Unless this is an XMC_XO symbol, we don't bother to actually
2458 define it, since we don't have a section to put it in anyhow.
2459 Instead, the relocation routines handle the DEF_DYNAMIC flag
2462 if (h
->smclas
== XMC_XO
2463 && (h
->root
.type
== bfd_link_hash_undefined
2464 || h
->root
.type
== bfd_link_hash_undefweak
))
2466 /* This symbol has an absolute value. */
2467 h
->root
.type
= bfd_link_hash_defined
;
2468 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
2469 h
->root
.u
.def
.value
= ldsym
.l_value
;
2473 if (buf
!= NULL
&& ! coff_section_data (abfd
, lsec
)->keep_contents
)
2475 free (coff_section_data (abfd
, lsec
)->contents
);
2476 coff_section_data (abfd
, lsec
)->contents
= NULL
;
2479 /* Record this file in the import files. */
2481 n
= ((struct xcoff_import_file
*)
2482 bfd_alloc (abfd
, sizeof (struct xcoff_import_file
)));
2487 /* For some reason, the path entry in the import file list for a
2488 shared object appears to always be empty. The file name is the
2491 if (abfd
->my_archive
== NULL
)
2493 bname
= bfd_get_filename (abfd
);
2498 bname
= bfd_get_filename (abfd
->my_archive
);
2499 mname
= bfd_get_filename (abfd
);
2501 s
= strrchr (bname
, '/');
2507 /* We start c at 1 because the first import file number is reserved
2509 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
2511 pp
= &(*pp
)->next
, ++c
)
2515 xcoff_data (abfd
)->import_file_id
= c
;
2520 /* Routines that are called after all the input files have been
2521 handled, but before the sections are laid out in memory. */
2523 /* Mark a symbol as not being garbage, including the section in which
2526 static INLINE boolean
2527 xcoff_mark_symbol (info
, h
)
2528 struct bfd_link_info
*info
;
2529 struct xcoff_link_hash_entry
*h
;
2531 if ((h
->flags
& XCOFF_MARK
) != 0)
2534 h
->flags
|= XCOFF_MARK
;
2535 if (h
->root
.type
== bfd_link_hash_defined
2536 || h
->root
.type
== bfd_link_hash_defweak
)
2540 hsec
= h
->root
.u
.def
.section
;
2541 if ((hsec
->flags
& SEC_MARK
) == 0)
2543 if (! xcoff_mark (info
, hsec
))
2548 if (h
->toc_section
!= NULL
2549 && (h
->toc_section
->flags
& SEC_MARK
) == 0)
2551 if (! xcoff_mark (info
, h
->toc_section
))
2558 /* The mark phase of garbage collection. For a given section, mark
2559 it, and all the sections which define symbols to which it refers.
2560 Because this function needs to look at the relocs, we also count
2561 the number of relocs which need to be copied into the .loader
2565 xcoff_mark (info
, sec
)
2566 struct bfd_link_info
*info
;
2569 if ((sec
->flags
& SEC_MARK
) != 0)
2572 sec
->flags
|= SEC_MARK
;
2574 if (sec
->owner
->xvec
== info
->hash
->creator
2575 && coff_section_data (sec
->owner
, sec
) != NULL
2576 && xcoff_section_data (sec
->owner
, sec
) != NULL
)
2578 register struct xcoff_link_hash_entry
**hp
, **hpend
;
2579 struct internal_reloc
*rel
, *relend
;
2581 /* Mark all the symbols in this section. */
2583 hp
= (obj_xcoff_sym_hashes (sec
->owner
)
2584 + xcoff_section_data (sec
->owner
, sec
)->first_symndx
);
2585 hpend
= (obj_xcoff_sym_hashes (sec
->owner
)
2586 + xcoff_section_data (sec
->owner
, sec
)->last_symndx
);
2587 for (; hp
< hpend
; hp
++)
2589 register struct xcoff_link_hash_entry
*h
;
2593 && (h
->flags
& XCOFF_MARK
) == 0)
2595 if (! xcoff_mark_symbol (info
, h
))
2600 /* Look through the section relocs. */
2602 if ((sec
->flags
& SEC_RELOC
) != 0
2603 && sec
->reloc_count
> 0)
2605 rel
= xcoff_read_internal_relocs (sec
->owner
, sec
, true,
2606 (bfd_byte
*) NULL
, false,
2607 (struct internal_reloc
*) NULL
);
2610 relend
= rel
+ sec
->reloc_count
;
2611 for (; rel
< relend
; rel
++)
2614 struct xcoff_link_hash_entry
*h
;
2616 if ((unsigned int) rel
->r_symndx
2617 > obj_raw_syment_count (sec
->owner
))
2620 h
= obj_xcoff_sym_hashes (sec
->owner
)[rel
->r_symndx
];
2622 && (h
->flags
& XCOFF_MARK
) == 0)
2624 if (! xcoff_mark_symbol (info
, h
))
2628 rsec
= xcoff_data (sec
->owner
)->csects
[rel
->r_symndx
];
2630 && (rsec
->flags
& SEC_MARK
) == 0)
2632 if (! xcoff_mark (info
, rsec
))
2636 /* See if this reloc needs to be copied into the .loader
2638 switch (rel
->r_type
)
2642 || h
->root
.type
== bfd_link_hash_defined
2643 || h
->root
.type
== bfd_link_hash_defweak
2644 || h
->root
.type
== bfd_link_hash_common
2645 || ((h
->flags
& XCOFF_CALLED
) != 0
2646 && (h
->root
.type
== bfd_link_hash_undefined
2647 || h
->root
.type
== bfd_link_hash_undefweak
)
2648 && h
->root
.root
.string
[0] == '.'
2649 && h
->descriptor
!= NULL
2650 && ((h
->descriptor
->flags
& XCOFF_DEF_DYNAMIC
) != 0
2652 || ((h
->descriptor
->flags
& XCOFF_IMPORT
) != 0
2653 && (h
->descriptor
->flags
2654 & XCOFF_DEF_REGULAR
) == 0))))
2661 ++xcoff_hash_table (info
)->ldrel_count
;
2663 h
->flags
|= XCOFF_LDREL
;
2670 /* We should never need a .loader reloc for a TOC
2676 if (! info
->keep_memory
2677 && coff_section_data (sec
->owner
, sec
) != NULL
2678 && coff_section_data (sec
->owner
, sec
)->relocs
!= NULL
2679 && ! coff_section_data (sec
->owner
, sec
)->keep_relocs
)
2681 free (coff_section_data (sec
->owner
, sec
)->relocs
);
2682 coff_section_data (sec
->owner
, sec
)->relocs
= NULL
;
2690 /* The sweep phase of garbage collection. Remove all garbage
2695 struct bfd_link_info
*info
;
2699 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
2703 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
2705 if ((o
->flags
& SEC_MARK
) == 0)
2707 /* Keep all sections from non-XCOFF input files. Keep
2708 special sections. Keep .debug sections for the
2710 if (sub
->xvec
!= info
->hash
->creator
2711 || o
== xcoff_hash_table (info
)->debug_section
2712 || o
== xcoff_hash_table (info
)->loader_section
2713 || o
== xcoff_hash_table (info
)->linkage_section
2714 || o
== xcoff_hash_table (info
)->toc_section
2715 || o
== xcoff_hash_table (info
)->descriptor_section
2716 || strcmp (o
->name
, ".debug") == 0)
2717 o
->flags
|= SEC_MARK
;
2722 o
->lineno_count
= 0;
2729 /* Record the number of elements in a set. This is used to output the
2730 correct csect length. */
2733 bfd_xcoff_link_record_set (output_bfd
, info
, harg
, size
)
2735 struct bfd_link_info
*info
;
2736 struct bfd_link_hash_entry
*harg
;
2739 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
2740 struct xcoff_link_size_list
*n
;
2742 if (! XCOFF_XVECP (output_bfd
->xvec
))
2745 /* This will hardly ever be called. I don't want to burn four bytes
2746 per global symbol, so instead the size is kept on a linked list
2747 attached to the hash table. */
2749 n
= ((struct xcoff_link_size_list
*)
2750 bfd_alloc (output_bfd
, sizeof (struct xcoff_link_size_list
)));
2753 n
->next
= xcoff_hash_table (info
)->size_list
;
2756 xcoff_hash_table (info
)->size_list
= n
;
2758 h
->flags
|= XCOFF_HAS_SIZE
;
2763 /* Import a symbol. */
2766 bfd_xcoff_import_symbol (output_bfd
, info
, harg
, val
, imppath
, impfile
,
2769 struct bfd_link_info
*info
;
2770 struct bfd_link_hash_entry
*harg
;
2772 const char *imppath
;
2773 const char *impfile
;
2774 const char *impmember
;
2776 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
2778 if (! XCOFF_XVECP (output_bfd
->xvec
))
2781 h
->flags
|= XCOFF_IMPORT
;
2783 if (val
!= (bfd_vma
) -1)
2785 if (h
->root
.type
== bfd_link_hash_defined
2786 && (! bfd_is_abs_section (h
->root
.u
.def
.section
)
2787 || h
->root
.u
.def
.value
!= val
))
2789 if (! ((*info
->callbacks
->multiple_definition
)
2790 (info
, h
->root
.root
.string
, h
->root
.u
.def
.section
->owner
,
2791 h
->root
.u
.def
.section
, h
->root
.u
.def
.value
,
2792 output_bfd
, bfd_abs_section_ptr
, val
)))
2796 h
->root
.type
= bfd_link_hash_defined
;
2797 h
->root
.u
.def
.section
= bfd_abs_section_ptr
;
2798 h
->root
.u
.def
.value
= val
;
2801 if (h
->ldsym
== NULL
)
2803 h
->ldsym
= ((struct internal_ldsym
*)
2804 bfd_zalloc (output_bfd
, sizeof (struct internal_ldsym
)));
2805 if (h
->ldsym
== NULL
)
2809 if (imppath
== NULL
)
2810 h
->ldsym
->l_ifile
= (bfd_size_type
) -1;
2814 struct xcoff_import_file
**pp
;
2816 /* We start c at 1 because the first entry in the import list is
2817 reserved for the library search path. */
2818 for (pp
= &xcoff_hash_table (info
)->imports
, c
= 1;
2820 pp
= &(*pp
)->next
, ++c
)
2822 if (strcmp ((*pp
)->path
, imppath
) == 0
2823 && strcmp ((*pp
)->file
, impfile
) == 0
2824 && strcmp ((*pp
)->member
, impmember
) == 0)
2830 struct xcoff_import_file
*n
;
2832 n
= ((struct xcoff_import_file
*)
2833 bfd_alloc (output_bfd
, sizeof (struct xcoff_import_file
)));
2839 n
->member
= impmember
;
2843 h
->ldsym
->l_ifile
= c
;
2849 /* Export a symbol. */
2852 bfd_xcoff_export_symbol (output_bfd
, info
, harg
, syscall
)
2854 struct bfd_link_info
*info
;
2855 struct bfd_link_hash_entry
*harg
;
2858 struct xcoff_link_hash_entry
*h
= (struct xcoff_link_hash_entry
*) harg
;
2860 if (! XCOFF_XVECP (output_bfd
->xvec
))
2863 h
->flags
|= XCOFF_EXPORT
;
2865 /* FIXME: I'm not at all sure what syscall is supposed to mean, so
2866 I'm just going to ignore it until somebody explains it. */
2868 /* See if this is a function descriptor. It may be one even though
2869 it is not so marked. */
2870 if ((h
->flags
& XCOFF_DESCRIPTOR
) == 0
2871 && h
->root
.root
.string
[0] != '.')
2874 struct xcoff_link_hash_entry
*hfn
;
2876 fnname
= (char *) bfd_malloc (strlen (h
->root
.root
.string
) + 2);
2880 strcpy (fnname
+ 1, h
->root
.root
.string
);
2881 hfn
= xcoff_link_hash_lookup (xcoff_hash_table (info
),
2882 fnname
, false, false, true);
2885 && hfn
->smclas
== XMC_PR
2886 && (hfn
->root
.type
== bfd_link_hash_defined
2887 || hfn
->root
.type
== bfd_link_hash_defweak
))
2889 h
->flags
|= XCOFF_DESCRIPTOR
;
2890 h
->descriptor
= hfn
;
2891 hfn
->descriptor
= h
;
2895 /* Make sure we don't garbage collect this symbol. */
2896 if (! xcoff_mark_symbol (info
, h
))
2899 /* If this is a function descriptor, make sure we don't garbage
2900 collect the associated function code. We normally don't have to
2901 worry about this, because the descriptor will be attached to a
2902 section with relocs, but if we are creating the descriptor
2903 ourselves those relocs will not be visible to the mark code. */
2904 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0)
2906 if (! xcoff_mark_symbol (info
, h
->descriptor
))
2913 /* Count a reloc against a symbol. This is called for relocs
2914 generated by the linker script, typically for global constructors
2918 bfd_xcoff_link_count_reloc (output_bfd
, info
, name
)
2920 struct bfd_link_info
*info
;
2923 struct xcoff_link_hash_entry
*h
;
2925 if (! XCOFF_XVECP (output_bfd
->xvec
))
2928 h
= ((struct xcoff_link_hash_entry
*)
2929 bfd_wrapped_link_hash_lookup (output_bfd
, info
, name
, false, false,
2933 (*_bfd_error_handler
) ("%s: no such symbol", name
);
2934 bfd_set_error (bfd_error_no_symbols
);
2938 h
->flags
|= XCOFF_REF_REGULAR
| XCOFF_LDREL
;
2939 ++xcoff_hash_table (info
)->ldrel_count
;
2941 /* Mark the symbol to avoid garbage collection. */
2942 if (! xcoff_mark_symbol (info
, h
))
2948 /* This function is called for each symbol to which the linker script
2952 bfd_xcoff_record_link_assignment (output_bfd
, info
, name
)
2954 struct bfd_link_info
*info
;
2957 struct xcoff_link_hash_entry
*h
;
2959 if (! XCOFF_XVECP (output_bfd
->xvec
))
2962 h
= xcoff_link_hash_lookup (xcoff_hash_table (info
), name
, true, true,
2967 h
->flags
|= XCOFF_DEF_REGULAR
;
2972 /* This structure is used to pass information through
2973 xcoff_link_hash_traverse. */
2975 struct xcoff_loader_info
2977 /* Set if a problem occurred. */
2981 /* Link information structure. */
2982 struct bfd_link_info
*info
;
2983 /* Whether all defined symbols should be exported. */
2984 boolean export_defineds
;
2985 /* Number of ldsym structures. */
2987 /* Size of string table. */
2991 /* Allocated size of string table. */
2995 /* Build the .loader section. This is called by the XCOFF linker
2996 emulation before_allocation routine. We must set the size of the
2997 .loader section before the linker lays out the output file.
2998 LIBPATH is the library path to search for shared objects; this is
2999 normally built from the -L arguments passed to the linker. ENTRY
3000 is the name of the entry point symbol (the -e linker option).
3001 FILE_ALIGN is the alignment to use for sections within the file
3002 (the -H linker option). MAXSTACK is the maximum stack size (the
3003 -bmaxstack linker option). MAXDATA is the maximum data size (the
3004 -bmaxdata linker option). GC is whether to do garbage collection
3005 (the -bgc linker option). MODTYPE is the module type (the
3006 -bmodtype linker option). TEXTRO is whether the text section must
3007 be read only (the -btextro linker option). EXPORT_DEFINEDS is
3008 whether all defined symbols should be exported (the -unix linker
3009 option). SPECIAL_SECTIONS is set by this routine to csects with
3010 magic names like _end. */
3013 bfd_xcoff_size_dynamic_sections (output_bfd
, info
, libpath
, entry
,
3014 file_align
, maxstack
, maxdata
, gc
,
3015 modtype
, textro
, export_defineds
,
3018 struct bfd_link_info
*info
;
3019 const char *libpath
;
3021 unsigned long file_align
;
3022 unsigned long maxstack
;
3023 unsigned long maxdata
;
3027 boolean export_defineds
;
3028 asection
**special_sections
;
3030 struct xcoff_link_hash_entry
*hentry
;
3032 struct xcoff_loader_info ldinfo
;
3034 size_t impsize
, impcount
;
3035 struct xcoff_import_file
*fl
;
3036 struct internal_ldhdr
*ldhdr
;
3037 bfd_size_type stoff
;
3041 struct bfd_strtab_hash
*debug_strtab
;
3042 bfd_byte
*debug_contents
= NULL
;
3044 if (! XCOFF_XVECP (output_bfd
->xvec
))
3046 for (i
= 0; i
< 6; i
++)
3047 special_sections
[i
] = NULL
;
3051 ldinfo
.failed
= false;
3052 ldinfo
.output_bfd
= output_bfd
;
3054 ldinfo
.export_defineds
= export_defineds
;
3055 ldinfo
.ldsym_count
= 0;
3056 ldinfo
.string_size
= 0;
3057 ldinfo
.strings
= NULL
;
3058 ldinfo
.string_alc
= 0;
3060 xcoff_data (output_bfd
)->maxstack
= maxstack
;
3061 xcoff_data (output_bfd
)->maxdata
= maxdata
;
3062 xcoff_data (output_bfd
)->modtype
= modtype
;
3064 xcoff_hash_table (info
)->file_align
= file_align
;
3065 xcoff_hash_table (info
)->textro
= textro
;
3067 hentry
= xcoff_link_hash_lookup (xcoff_hash_table (info
), entry
,
3068 false, false, true);
3070 hentry
->flags
|= XCOFF_ENTRY
;
3072 /* Garbage collect unused sections. */
3073 if (info
->relocateable
3076 || (hentry
->root
.type
!= bfd_link_hash_defined
3077 && hentry
->root
.type
!= bfd_link_hash_defweak
))
3080 xcoff_hash_table (info
)->gc
= false;
3082 /* We still need to call xcoff_mark, in order to set ldrel_count
3084 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
3088 for (o
= sub
->sections
; o
!= NULL
; o
= o
->next
)
3090 if ((o
->flags
& SEC_MARK
) == 0)
3092 if (! xcoff_mark (info
, o
))
3100 if (! xcoff_mark (info
, hentry
->root
.u
.def
.section
))
3103 xcoff_hash_table (info
)->gc
= true;
3106 /* Return special sections to the caller. */
3107 for (i
= 0; i
< 6; i
++)
3111 sec
= xcoff_hash_table (info
)->special_sections
[i
];
3114 && (sec
->flags
& SEC_MARK
) == 0)
3116 special_sections
[i
] = sec
;
3119 if (info
->input_bfds
== NULL
)
3121 /* I'm not sure what to do in this bizarre case. */
3125 xcoff_link_hash_traverse (xcoff_hash_table (info
), xcoff_build_ldsyms
,
3130 /* Work out the size of the import file names. Each import file ID
3131 consists of three null terminated strings: the path, the file
3132 name, and the archive member name. The first entry in the list
3133 of names is the path to use to find objects, which the linker has
3134 passed in as the libpath argument. For some reason, the path
3135 entry in the other import file names appears to always be empty. */
3136 impsize
= strlen (libpath
) + 3;
3138 for (fl
= xcoff_hash_table (info
)->imports
; fl
!= NULL
; fl
= fl
->next
)
3141 impsize
+= (strlen (fl
->path
)
3143 + strlen (fl
->member
)
3147 /* Set up the .loader section header. */
3148 ldhdr
= &xcoff_hash_table (info
)->ldhdr
;
3149 ldhdr
->l_version
= 1;
3150 ldhdr
->l_nsyms
= ldinfo
.ldsym_count
;
3151 ldhdr
->l_nreloc
= xcoff_hash_table (info
)->ldrel_count
;
3152 ldhdr
->l_istlen
= impsize
;
3153 ldhdr
->l_nimpid
= impcount
;
3154 ldhdr
->l_impoff
= (LDHDRSZ
3155 + ldhdr
->l_nsyms
* LDSYMSZ
3156 + ldhdr
->l_nreloc
* LDRELSZ
);
3157 ldhdr
->l_stlen
= ldinfo
.string_size
;
3158 stoff
= ldhdr
->l_impoff
+ impsize
;
3159 if (ldinfo
.string_size
== 0)
3162 ldhdr
->l_stoff
= stoff
;
3164 /* We now know the final size of the .loader section. Allocate
3166 lsec
= xcoff_hash_table (info
)->loader_section
;
3167 lsec
->_raw_size
= stoff
+ ldhdr
->l_stlen
;
3168 lsec
->contents
= (bfd_byte
*) bfd_zalloc (output_bfd
, lsec
->_raw_size
);
3169 if (lsec
->contents
== NULL
)
3172 /* Set up the header. */
3173 xcoff_swap_ldhdr_out (output_bfd
, ldhdr
,
3174 (struct external_ldhdr
*) lsec
->contents
);
3176 /* Set up the import file names. */
3177 out
= (char *) lsec
->contents
+ ldhdr
->l_impoff
;
3178 strcpy (out
, libpath
);
3179 out
+= strlen (libpath
) + 1;
3182 for (fl
= xcoff_hash_table (info
)->imports
; fl
!= NULL
; fl
= fl
->next
)
3184 register const char *s
;
3187 while ((*out
++ = *s
++) != '\0')
3190 while ((*out
++ = *s
++) != '\0')
3193 while ((*out
++ = *s
++) != '\0')
3197 BFD_ASSERT ((bfd_size_type
) ((bfd_byte
*) out
- lsec
->contents
) == stoff
);
3199 /* Set up the symbol string table. */
3200 if (ldinfo
.string_size
> 0)
3202 memcpy (out
, ldinfo
.strings
, ldinfo
.string_size
);
3203 free (ldinfo
.strings
);
3204 ldinfo
.strings
= NULL
;
3207 /* We can't set up the symbol table or the relocs yet, because we
3208 don't yet know the final position of the various sections. The
3209 .loader symbols are written out when the corresponding normal
3210 symbols are written out in xcoff_link_input_bfd or
3211 xcoff_write_global_symbol. The .loader relocs are written out
3212 when the corresponding normal relocs are handled in
3213 xcoff_link_input_bfd. */
3215 /* Allocate space for the magic sections. */
3216 sec
= xcoff_hash_table (info
)->linkage_section
;
3217 if (sec
->_raw_size
> 0)
3219 sec
->contents
= (bfd_byte
*) bfd_zalloc (output_bfd
, sec
->_raw_size
);
3220 if (sec
->contents
== NULL
)
3223 sec
= xcoff_hash_table (info
)->toc_section
;
3224 if (sec
->_raw_size
> 0)
3226 sec
->contents
= (bfd_byte
*) bfd_zalloc (output_bfd
, sec
->_raw_size
);
3227 if (sec
->contents
== NULL
)
3230 sec
= xcoff_hash_table (info
)->descriptor_section
;
3231 if (sec
->_raw_size
> 0)
3233 sec
->contents
= (bfd_byte
*) bfd_zalloc (output_bfd
, sec
->_raw_size
);
3234 if (sec
->contents
== NULL
)
3238 /* Now that we've done garbage collection, figure out the contents
3239 of the .debug section. */
3240 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
3242 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
3245 bfd_size_type symcount
;
3246 unsigned long *debug_index
;
3248 bfd_byte
*esym
, *esymend
;
3249 bfd_size_type symesz
;
3251 if (sub
->xvec
!= info
->hash
->creator
)
3253 subdeb
= bfd_get_section_by_name (sub
, ".debug");
3254 if (subdeb
== NULL
|| subdeb
->_raw_size
== 0)
3257 if (info
->strip
== strip_all
3258 || info
->strip
== strip_debugger
3259 || info
->discard
== discard_all
)
3261 subdeb
->_raw_size
= 0;
3265 if (! _bfd_coff_get_external_symbols (sub
))
3268 symcount
= obj_raw_syment_count (sub
);
3269 debug_index
= ((unsigned long *)
3270 bfd_zalloc (sub
, symcount
* sizeof (unsigned long)));
3271 if (debug_index
== NULL
)
3273 xcoff_data (sub
)->debug_indices
= debug_index
;
3275 /* Grab the contents of the .debug section. We use malloc and
3276 copy the neams into the debug stringtab, rather than
3277 bfd_alloc, because I expect that, when linking many files
3278 together, many of the strings will be the same. Storing the
3279 strings in the hash table should save space in this case. */
3280 debug_contents
= (bfd_byte
*) bfd_malloc (subdeb
->_raw_size
);
3281 if (debug_contents
== NULL
)
3283 if (! bfd_get_section_contents (sub
, subdeb
, (PTR
) debug_contents
,
3284 (file_ptr
) 0, subdeb
->_raw_size
))
3287 csectpp
= xcoff_data (sub
)->csects
;
3289 symesz
= bfd_coff_symesz (sub
);
3290 esym
= (bfd_byte
*) obj_coff_external_syms (sub
);
3291 esymend
= esym
+ symcount
* symesz
;
3292 while (esym
< esymend
)
3294 struct internal_syment sym
;
3296 bfd_coff_swap_sym_in (sub
, (PTR
) esym
, (PTR
) &sym
);
3298 *debug_index
= (unsigned long) -1;
3300 if (sym
._n
._n_n
._n_zeroes
== 0
3303 || ((*csectpp
)->flags
& SEC_MARK
) != 0
3304 || *csectpp
== bfd_abs_section_ptr
)
3305 && bfd_coff_symname_in_debug (sub
, &sym
))
3310 name
= (char *) debug_contents
+ sym
._n
._n_n
._n_offset
;
3311 indx
= _bfd_stringtab_add (debug_strtab
, name
, true, true);
3312 if (indx
== (bfd_size_type
) -1)
3314 *debug_index
= indx
;
3317 esym
+= (sym
.n_numaux
+ 1) * symesz
;
3318 csectpp
+= sym
.n_numaux
+ 1;
3319 debug_index
+= sym
.n_numaux
+ 1;
3322 free (debug_contents
);
3323 debug_contents
= NULL
;
3325 /* Clear the size of subdeb, so that it is not included directly
3326 in the output file. */
3327 subdeb
->_raw_size
= 0;
3329 if (! info
->keep_memory
)
3331 if (! _bfd_coff_free_symbols (sub
))
3336 xcoff_hash_table (info
)->debug_section
->_raw_size
=
3337 _bfd_stringtab_size (debug_strtab
);
3342 if (ldinfo
.strings
!= NULL
)
3343 free (ldinfo
.strings
);
3344 if (debug_contents
!= NULL
)
3345 free (debug_contents
);
3349 /* Add a symbol to the .loader symbols, if necessary. */
3352 xcoff_build_ldsyms (h
, p
)
3353 struct xcoff_link_hash_entry
*h
;
3356 struct xcoff_loader_info
*ldinfo
= (struct xcoff_loader_info
*) p
;
3359 /* If all defined symbols should be exported, mark them now. */
3360 if (ldinfo
->export_defineds
3361 && (h
->flags
& XCOFF_DEF_REGULAR
) != 0)
3362 h
->flags
|= XCOFF_EXPORT
;
3364 /* We don't want to garbage collect symbols which are not defined in
3365 XCOFF files. This is a convenient place to mark them. */
3366 if (xcoff_hash_table (ldinfo
->info
)->gc
3367 && (h
->flags
& XCOFF_MARK
) == 0
3368 && (h
->root
.type
== bfd_link_hash_defined
3369 || h
->root
.type
== bfd_link_hash_defweak
)
3370 && (h
->root
.u
.def
.section
->owner
== NULL
3371 || (h
->root
.u
.def
.section
->owner
->xvec
3372 != ldinfo
->info
->hash
->creator
)))
3373 h
->flags
|= XCOFF_MARK
;
3375 /* If this symbol is called and defined in a dynamic object, or not
3376 defined at all when building a shared object, or imported, then
3377 we need to set up global linkage code for it. (Unless we did
3378 garbage collection and we didn't need this symbol.) */
3379 if ((h
->flags
& XCOFF_CALLED
) != 0
3380 && (h
->root
.type
== bfd_link_hash_undefined
3381 || h
->root
.type
== bfd_link_hash_undefweak
)
3382 && h
->root
.root
.string
[0] == '.'
3383 && h
->descriptor
!= NULL
3384 && ((h
->descriptor
->flags
& XCOFF_DEF_DYNAMIC
) != 0
3385 || ldinfo
->info
->shared
3386 || ((h
->descriptor
->flags
& XCOFF_IMPORT
) != 0
3387 && (h
->descriptor
->flags
& XCOFF_DEF_REGULAR
) == 0))
3388 && (! xcoff_hash_table (ldinfo
->info
)->gc
3389 || (h
->flags
& XCOFF_MARK
) != 0))
3392 struct xcoff_link_hash_entry
*hds
;
3394 sec
= xcoff_hash_table (ldinfo
->info
)->linkage_section
;
3395 h
->root
.type
= bfd_link_hash_defined
;
3396 h
->root
.u
.def
.section
= sec
;
3397 h
->root
.u
.def
.value
= sec
->_raw_size
;
3399 h
->flags
|= XCOFF_DEF_REGULAR
;
3400 sec
->_raw_size
+= XCOFF_GLINK_SIZE
;
3402 /* The global linkage code requires a TOC entry for the
3404 hds
= h
->descriptor
;
3405 BFD_ASSERT ((hds
->root
.type
== bfd_link_hash_undefined
3406 || hds
->root
.type
== bfd_link_hash_undefweak
)
3407 && (hds
->flags
& XCOFF_DEF_REGULAR
) == 0);
3408 hds
->flags
|= XCOFF_MARK
;
3409 if (hds
->toc_section
== NULL
)
3411 hds
->toc_section
= xcoff_hash_table (ldinfo
->info
)->toc_section
;
3412 hds
->u
.toc_offset
= hds
->toc_section
->_raw_size
;
3413 hds
->toc_section
->_raw_size
+= 4;
3414 ++xcoff_hash_table (ldinfo
->info
)->ldrel_count
;
3415 ++hds
->toc_section
->reloc_count
;
3417 hds
->flags
|= XCOFF_SET_TOC
| XCOFF_LDREL
;
3419 /* We need to call xcoff_build_ldsyms recursively here,
3420 because we may already have passed hds on the traversal. */
3421 xcoff_build_ldsyms (hds
, p
);
3425 /* If this symbol is exported, but not defined, we need to try to
3427 if ((h
->flags
& XCOFF_EXPORT
) != 0
3428 && (h
->flags
& XCOFF_IMPORT
) == 0
3429 && (h
->flags
& XCOFF_DEF_REGULAR
) == 0
3430 && (h
->flags
& XCOFF_DEF_DYNAMIC
) == 0
3431 && (h
->root
.type
== bfd_link_hash_undefined
3432 || h
->root
.type
== bfd_link_hash_undefweak
))
3434 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
3435 && (h
->descriptor
->root
.type
== bfd_link_hash_defined
3436 || h
->descriptor
->root
.type
== bfd_link_hash_defweak
))
3440 /* This is an undefined function descriptor associated with
3441 a defined entry point. We can build up a function
3442 descriptor ourselves. Believe it or not, the AIX linker
3443 actually does this, and there are cases where we need to
3445 sec
= xcoff_hash_table (ldinfo
->info
)->descriptor_section
;
3446 h
->root
.type
= bfd_link_hash_defined
;
3447 h
->root
.u
.def
.section
= sec
;
3448 h
->root
.u
.def
.value
= sec
->_raw_size
;
3450 h
->flags
|= XCOFF_DEF_REGULAR
;
3451 sec
->_raw_size
+= 12;
3453 /* A function descriptor uses two relocs: one for the
3454 associated code, and one for the TOC address. */
3455 xcoff_hash_table (ldinfo
->info
)->ldrel_count
+= 2;
3456 sec
->reloc_count
+= 2;
3458 /* We handle writing out the contents of the descriptor in
3459 xcoff_write_global_symbol. */
3463 (*_bfd_error_handler
)
3464 ("attempt to export undefined symbol `%s'",
3465 h
->root
.root
.string
);
3466 ldinfo
->failed
= true;
3467 bfd_set_error (bfd_error_invalid_operation
);
3472 /* If this is still a common symbol, and it wasn't garbage
3473 collected, we need to actually allocate space for it in the .bss
3475 if (h
->root
.type
== bfd_link_hash_common
3476 && (! xcoff_hash_table (ldinfo
->info
)->gc
3477 || (h
->flags
& XCOFF_MARK
) != 0)
3478 && h
->root
.u
.c
.p
->section
->_raw_size
== 0)
3480 BFD_ASSERT (bfd_is_com_section (h
->root
.u
.c
.p
->section
));
3481 h
->root
.u
.c
.p
->section
->_raw_size
= h
->root
.u
.c
.size
;
3484 /* We need to add a symbol to the .loader section if it is mentioned
3485 in a reloc which we are copying to the .loader section and it was
3486 not defined or common, or if it is the entry point, or if it is
3489 if (((h
->flags
& XCOFF_LDREL
) == 0
3490 || h
->root
.type
== bfd_link_hash_defined
3491 || h
->root
.type
== bfd_link_hash_defweak
3492 || h
->root
.type
== bfd_link_hash_common
)
3493 && (h
->flags
& XCOFF_ENTRY
) == 0
3494 && (h
->flags
& XCOFF_EXPORT
) == 0)
3500 /* We don't need to add this symbol if we did garbage collection and
3501 we did not mark this symbol. */
3502 if (xcoff_hash_table (ldinfo
->info
)->gc
3503 && (h
->flags
& XCOFF_MARK
) == 0)
3509 /* We may have already processed this symbol due to the recursive
3511 if ((h
->flags
& XCOFF_BUILT_LDSYM
) != 0)
3514 /* We need to add this symbol to the .loader symbols. */
3516 /* h->ldsym will already have been allocated for an explicitly
3518 if (h
->ldsym
== NULL
)
3520 h
->ldsym
= ((struct internal_ldsym
*)
3521 bfd_zalloc (ldinfo
->output_bfd
,
3522 sizeof (struct internal_ldsym
)));
3523 if (h
->ldsym
== NULL
)
3525 ldinfo
->failed
= true;
3530 /* The first 3 symbol table indices are reserved to indicate the
3532 h
->ldindx
= ldinfo
->ldsym_count
+ 3;
3534 ++ldinfo
->ldsym_count
;
3536 len
= strlen (h
->root
.root
.string
);
3537 if (len
<= SYMNMLEN
)
3538 strncpy (h
->ldsym
->_l
._l_name
, h
->root
.root
.string
, SYMNMLEN
);
3541 if (ldinfo
->string_size
+ len
+ 3 > ldinfo
->string_alc
)
3544 bfd_byte
*newstrings
;
3546 newalc
= ldinfo
->string_alc
* 2;
3549 while (ldinfo
->string_size
+ len
+ 3 > newalc
)
3552 newstrings
= ((bfd_byte
*)
3553 bfd_realloc ((PTR
) ldinfo
->strings
, newalc
));
3554 if (newstrings
== NULL
)
3556 ldinfo
->failed
= true;
3559 ldinfo
->string_alc
= newalc
;
3560 ldinfo
->strings
= newstrings
;
3563 bfd_put_16 (ldinfo
->output_bfd
, len
+ 1,
3564 ldinfo
->strings
+ ldinfo
->string_size
);
3565 strcpy (ldinfo
->strings
+ ldinfo
->string_size
+ 2, h
->root
.root
.string
);
3566 h
->ldsym
->_l
._l_l
._l_zeroes
= 0;
3567 h
->ldsym
->_l
._l_l
._l_offset
= ldinfo
->string_size
+ 2;
3568 ldinfo
->string_size
+= len
+ 3;
3571 h
->flags
|= XCOFF_BUILT_LDSYM
;
3576 /* Do the final link step. */
3579 _bfd_xcoff_bfd_final_link (abfd
, info
)
3581 struct bfd_link_info
*info
;
3583 bfd_size_type symesz
;
3584 struct xcoff_final_link_info finfo
;
3586 struct bfd_link_order
*p
;
3587 size_t max_contents_size
;
3588 size_t max_sym_count
;
3589 size_t max_lineno_count
;
3590 size_t max_reloc_count
;
3591 size_t max_output_reloc_count
;
3592 file_ptr rel_filepos
;
3594 file_ptr line_filepos
;
3595 unsigned int linesz
;
3597 bfd_byte
*external_relocs
= NULL
;
3598 char strbuf
[STRING_SIZE_SIZE
];
3601 abfd
->flags
|= DYNAMIC
;
3603 symesz
= bfd_coff_symesz (abfd
);
3606 finfo
.output_bfd
= abfd
;
3607 finfo
.strtab
= NULL
;
3608 finfo
.section_info
= NULL
;
3609 finfo
.last_file_index
= -1;
3610 finfo
.toc_symindx
= -1;
3611 finfo
.internal_syms
= NULL
;
3612 finfo
.sym_indices
= NULL
;
3613 finfo
.outsyms
= NULL
;
3614 finfo
.linenos
= NULL
;
3615 finfo
.contents
= NULL
;
3616 finfo
.external_relocs
= NULL
;
3618 finfo
.ldsym
= ((struct external_ldsym
*)
3619 (xcoff_hash_table (info
)->loader_section
->contents
3621 finfo
.ldrel
= ((struct external_ldrel
*)
3622 (xcoff_hash_table (info
)->loader_section
->contents
3624 + xcoff_hash_table (info
)->ldhdr
.l_nsyms
* LDSYMSZ
));
3626 xcoff_data (abfd
)->coff
.link_info
= info
;
3628 finfo
.strtab
= _bfd_stringtab_init ();
3629 if (finfo
.strtab
== NULL
)
3632 /* Count the line number and relocation entries required for the
3633 output file. Determine a few maximum sizes. */
3634 max_contents_size
= 0;
3635 max_lineno_count
= 0;
3636 max_reloc_count
= 0;
3637 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3640 o
->lineno_count
= 0;
3641 for (p
= o
->link_order_head
; p
!= NULL
; p
= p
->next
)
3643 if (p
->type
== bfd_indirect_link_order
)
3647 sec
= p
->u
.indirect
.section
;
3649 /* Mark all sections which are to be included in the
3650 link. This will normally be every section. We need
3651 to do this so that we can identify any sections which
3652 the linker has decided to not include. */
3653 sec
->linker_mark
= true;
3655 if (info
->strip
== strip_none
3656 || info
->strip
== strip_some
)
3657 o
->lineno_count
+= sec
->lineno_count
;
3659 o
->reloc_count
+= sec
->reloc_count
;
3661 if (sec
->_raw_size
> max_contents_size
)
3662 max_contents_size
= sec
->_raw_size
;
3663 if (sec
->lineno_count
> max_lineno_count
)
3664 max_lineno_count
= sec
->lineno_count
;
3665 if (coff_section_data (sec
->owner
, sec
) != NULL
3666 && xcoff_section_data (sec
->owner
, sec
) != NULL
3667 && (xcoff_section_data (sec
->owner
, sec
)->lineno_count
3668 > max_lineno_count
))
3670 xcoff_section_data (sec
->owner
, sec
)->lineno_count
;
3671 if (sec
->reloc_count
> max_reloc_count
)
3672 max_reloc_count
= sec
->reloc_count
;
3674 else if (p
->type
== bfd_section_reloc_link_order
3675 || p
->type
== bfd_symbol_reloc_link_order
)
3680 /* Compute the file positions for all the sections. */
3681 if (abfd
->output_has_begun
)
3683 if (xcoff_hash_table (info
)->file_align
!= 0)
3690 file_align
= xcoff_hash_table (info
)->file_align
;
3691 if (file_align
!= 0)
3693 boolean saw_contents
;
3698 /* Insert .pad sections before every section which has
3699 contents and is loaded, if it is preceded by some other
3700 section which has contents and is loaded. */
3701 saw_contents
= true;
3702 for (op
= &abfd
->sections
; *op
!= NULL
; op
= &(*op
)->next
)
3704 (*op
)->target_index
= indx
;
3705 if (strcmp ((*op
)->name
, ".pad") == 0)
3706 saw_contents
= false;
3707 else if (((*op
)->flags
& SEC_HAS_CONTENTS
) != 0
3708 && ((*op
)->flags
& SEC_LOAD
) != 0)
3711 saw_contents
= true;
3718 n
= bfd_make_section_anyway (abfd
, ".pad");
3719 BFD_ASSERT (*op
== n
);
3721 n
->flags
= SEC_HAS_CONTENTS
;
3722 n
->alignment_power
= 0;
3723 saw_contents
= false;
3728 /* Reset the section indices after inserting the new
3731 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3734 o
->target_index
= indx
;
3736 BFD_ASSERT ((unsigned int) indx
== abfd
->section_count
);
3738 /* Work out appropriate sizes for the .pad sections to force
3739 each section to land on a page boundary. This bit of
3740 code knows what compute_section_file_positions is going
3742 sofar
= bfd_coff_filhsz (abfd
);
3743 sofar
+= bfd_coff_aoutsz (abfd
);
3744 sofar
+= abfd
->section_count
* bfd_coff_scnhsz (abfd
);
3745 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3746 if (o
->reloc_count
>= 0xffff || o
->lineno_count
>= 0xffff)
3747 sofar
+= bfd_coff_scnhsz (abfd
);
3749 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3751 if (strcmp (o
->name
, ".pad") == 0)
3755 BFD_ASSERT (o
->_raw_size
== 0);
3756 pageoff
= sofar
& (file_align
- 1);
3759 o
->_raw_size
= file_align
- pageoff
;
3760 sofar
+= file_align
- pageoff
;
3761 o
->flags
|= SEC_HAS_CONTENTS
;
3766 if ((o
->flags
& SEC_HAS_CONTENTS
) != 0)
3767 sofar
+= BFD_ALIGN (o
->_raw_size
,
3768 1 << o
->alignment_power
);
3773 bfd_coff_compute_section_file_positions (abfd
);
3776 /* Allocate space for the pointers we need to keep for the relocs. */
3780 /* We use section_count + 1, rather than section_count, because
3781 the target_index fields are 1 based. */
3782 finfo
.section_info
=
3783 ((struct xcoff_link_section_info
*)
3784 bfd_malloc ((abfd
->section_count
+ 1)
3785 * sizeof (struct xcoff_link_section_info
)));
3786 if (finfo
.section_info
== NULL
)
3788 for (i
= 0; i
<= abfd
->section_count
; i
++)
3790 finfo
.section_info
[i
].relocs
= NULL
;
3791 finfo
.section_info
[i
].rel_hashes
= NULL
;
3792 finfo
.section_info
[i
].toc_rel_hashes
= NULL
;
3796 /* Set the file positions for the relocs. */
3797 rel_filepos
= obj_relocbase (abfd
);
3798 relsz
= bfd_coff_relsz (abfd
);
3799 max_output_reloc_count
= 0;
3800 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3802 if (o
->reloc_count
== 0)
3806 o
->flags
|= SEC_RELOC
;
3807 o
->rel_filepos
= rel_filepos
;
3808 rel_filepos
+= o
->reloc_count
* relsz
;
3810 /* We don't know the indices of global symbols until we have
3811 written out all the local symbols. For each section in
3812 the output file, we keep an array of pointers to hash
3813 table entries. Each entry in the array corresponds to a
3814 reloc. When we find a reloc against a global symbol, we
3815 set the corresponding entry in this array so that we can
3816 fix up the symbol index after we have written out all the
3819 Because of this problem, we also keep the relocs in
3820 memory until the end of the link. This wastes memory.
3821 We could backpatch the file later, I suppose, although it
3823 finfo
.section_info
[o
->target_index
].relocs
=
3824 ((struct internal_reloc
*)
3825 bfd_malloc (o
->reloc_count
* sizeof (struct internal_reloc
)));
3826 finfo
.section_info
[o
->target_index
].rel_hashes
=
3827 ((struct xcoff_link_hash_entry
**)
3828 bfd_malloc (o
->reloc_count
3829 * sizeof (struct xcoff_link_hash_entry
*)));
3830 if (finfo
.section_info
[o
->target_index
].relocs
== NULL
3831 || finfo
.section_info
[o
->target_index
].rel_hashes
== NULL
)
3834 if (o
->reloc_count
> max_output_reloc_count
)
3835 max_output_reloc_count
= o
->reloc_count
;
3839 /* We now know the size of the relocs, so we can determine the file
3840 positions of the line numbers. */
3841 line_filepos
= rel_filepos
;
3842 finfo
.line_filepos
= line_filepos
;
3843 linesz
= bfd_coff_linesz (abfd
);
3844 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3846 if (o
->lineno_count
== 0)
3847 o
->line_filepos
= 0;
3850 o
->line_filepos
= line_filepos
;
3851 line_filepos
+= o
->lineno_count
* linesz
;
3854 /* Reset the reloc and lineno counts, so that we can use them to
3855 count the number of entries we have output so far. */
3857 o
->lineno_count
= 0;
3860 obj_sym_filepos (abfd
) = line_filepos
;
3862 /* Figure out the largest number of symbols in an input BFD. Take
3863 the opportunity to clear the output_has_begun fields of all the
3864 input BFD's. We want at least 4 symbols, since that is the
3865 number which xcoff_write_global_symbol may need. */
3867 for (sub
= info
->input_bfds
; sub
!= NULL
; sub
= sub
->link_next
)
3871 sub
->output_has_begun
= false;
3872 sz
= obj_raw_syment_count (sub
);
3873 if (sz
> max_sym_count
)
3877 /* Allocate some buffers used while linking. */
3878 finfo
.internal_syms
= ((struct internal_syment
*)
3879 bfd_malloc (max_sym_count
3880 * sizeof (struct internal_syment
)));
3881 finfo
.sym_indices
= (long *) bfd_malloc (max_sym_count
* sizeof (long));
3882 finfo
.outsyms
= ((bfd_byte
*)
3883 bfd_malloc ((size_t) ((max_sym_count
+ 1) * symesz
)));
3884 finfo
.linenos
= (bfd_byte
*) bfd_malloc (max_lineno_count
3885 * bfd_coff_linesz (abfd
));
3886 finfo
.contents
= (bfd_byte
*) bfd_malloc (max_contents_size
);
3887 finfo
.external_relocs
= (bfd_byte
*) bfd_malloc (max_reloc_count
* relsz
);
3888 if ((finfo
.internal_syms
== NULL
&& max_sym_count
> 0)
3889 || (finfo
.sym_indices
== NULL
&& max_sym_count
> 0)
3890 || finfo
.outsyms
== NULL
3891 || (finfo
.linenos
== NULL
&& max_lineno_count
> 0)
3892 || (finfo
.contents
== NULL
&& max_contents_size
> 0)
3893 || (finfo
.external_relocs
== NULL
&& max_reloc_count
> 0))
3896 obj_raw_syment_count (abfd
) = 0;
3897 xcoff_data (abfd
)->toc
= (bfd_vma
) -1;
3899 /* We now know the position of everything in the file, except that
3900 we don't know the size of the symbol table and therefore we don't
3901 know where the string table starts. We just build the string
3902 table in memory as we go along. We process all the relocations
3903 for a single input file at once. */
3904 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
3906 for (p
= o
->link_order_head
; p
!= NULL
; p
= p
->next
)
3908 if (p
->type
== bfd_indirect_link_order
3909 && p
->u
.indirect
.section
->owner
->xvec
== abfd
->xvec
)
3911 sub
= p
->u
.indirect
.section
->owner
;
3912 if (! sub
->output_has_begun
)
3914 if (! xcoff_link_input_bfd (&finfo
, sub
))
3916 sub
->output_has_begun
= true;
3919 else if (p
->type
== bfd_section_reloc_link_order
3920 || p
->type
== bfd_symbol_reloc_link_order
)
3922 if (! xcoff_reloc_link_order (abfd
, &finfo
, o
, p
))
3927 if (! _bfd_default_link_order (abfd
, info
, o
, p
))
3933 /* Free up the buffers used by xcoff_link_input_bfd. */
3935 if (finfo
.internal_syms
!= NULL
)
3937 free (finfo
.internal_syms
);
3938 finfo
.internal_syms
= NULL
;
3940 if (finfo
.sym_indices
!= NULL
)
3942 free (finfo
.sym_indices
);
3943 finfo
.sym_indices
= NULL
;
3945 if (finfo
.linenos
!= NULL
)
3947 free (finfo
.linenos
);
3948 finfo
.linenos
= NULL
;
3950 if (finfo
.contents
!= NULL
)
3952 free (finfo
.contents
);
3953 finfo
.contents
= NULL
;
3955 if (finfo
.external_relocs
!= NULL
)
3957 free (finfo
.external_relocs
);
3958 finfo
.external_relocs
= NULL
;
3961 /* The value of the last C_FILE symbol is supposed to be -1. Write
3963 if (finfo
.last_file_index
!= -1)
3965 finfo
.last_file
.n_value
= -1;
3966 bfd_coff_swap_sym_out (abfd
, (PTR
) &finfo
.last_file
,
3967 (PTR
) finfo
.outsyms
);
3969 (obj_sym_filepos (abfd
)
3970 + finfo
.last_file_index
* symesz
),
3972 || bfd_write (finfo
.outsyms
, symesz
, 1, abfd
) != symesz
)
3976 /* Write out all the global symbols which do not come from XCOFF
3978 xcoff_link_hash_traverse (xcoff_hash_table (info
),
3979 xcoff_write_global_symbol
,
3982 if (finfo
.outsyms
!= NULL
)
3984 free (finfo
.outsyms
);
3985 finfo
.outsyms
= NULL
;
3988 /* Now that we have written out all the global symbols, we know the
3989 symbol indices to use for relocs against them, and we can finally
3990 write out the relocs. */
3991 external_relocs
= (bfd_byte
*) malloc (max_output_reloc_count
* relsz
);
3992 if (external_relocs
== NULL
&& max_output_reloc_count
!= 0)
3994 bfd_set_error (bfd_error_no_memory
);
3998 for (o
= abfd
->sections
; o
!= NULL
; o
= o
->next
)
4000 struct internal_reloc
*irel
;
4001 struct internal_reloc
*irelend
;
4002 struct xcoff_link_hash_entry
**rel_hash
;
4003 struct xcoff_toc_rel_hash
*toc_rel_hash
;
4006 if (o
->reloc_count
== 0)
4009 irel
= finfo
.section_info
[o
->target_index
].relocs
;
4010 irelend
= irel
+ o
->reloc_count
;
4011 rel_hash
= finfo
.section_info
[o
->target_index
].rel_hashes
;
4012 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
4014 if (*rel_hash
!= NULL
)
4016 if ((*rel_hash
)->indx
< 0)
4018 if (! ((*info
->callbacks
->unattached_reloc
)
4019 (info
, (*rel_hash
)->root
.root
.string
,
4020 (bfd
*) NULL
, o
, irel
->r_vaddr
)))
4022 (*rel_hash
)->indx
= 0;
4024 irel
->r_symndx
= (*rel_hash
)->indx
;
4028 for (toc_rel_hash
= finfo
.section_info
[o
->target_index
].toc_rel_hashes
;
4029 toc_rel_hash
!= NULL
;
4030 toc_rel_hash
= toc_rel_hash
->next
)
4032 if (toc_rel_hash
->h
->u
.toc_indx
< 0)
4034 if (! ((*info
->callbacks
->unattached_reloc
)
4035 (info
, toc_rel_hash
->h
->root
.root
.string
,
4036 (bfd
*) NULL
, o
, toc_rel_hash
->rel
->r_vaddr
)))
4038 toc_rel_hash
->h
->u
.toc_indx
= 0;
4040 toc_rel_hash
->rel
->r_symndx
= toc_rel_hash
->h
->u
.toc_indx
;
4043 /* XCOFF requires that the relocs be sorted by address. We tend
4044 to produce them in the order in which their containing csects
4045 appear in the symbol table, which is not necessarily by
4046 address. So we sort them here. There may be a better way to
4048 qsort ((PTR
) finfo
.section_info
[o
->target_index
].relocs
,
4049 o
->reloc_count
, sizeof (struct internal_reloc
),
4052 irel
= finfo
.section_info
[o
->target_index
].relocs
;
4053 irelend
= irel
+ o
->reloc_count
;
4054 erel
= external_relocs
;
4055 for (; irel
< irelend
; irel
++, rel_hash
++, erel
+= relsz
)
4056 bfd_coff_swap_reloc_out (abfd
, (PTR
) irel
, (PTR
) erel
);
4058 if (bfd_seek (abfd
, o
->rel_filepos
, SEEK_SET
) != 0
4059 || bfd_write ((PTR
) external_relocs
, relsz
, o
->reloc_count
,
4060 abfd
) != relsz
* o
->reloc_count
)
4064 if (external_relocs
!= NULL
)
4066 free (external_relocs
);
4067 external_relocs
= NULL
;
4070 /* Free up the section information. */
4071 if (finfo
.section_info
!= NULL
)
4075 for (i
= 0; i
< abfd
->section_count
; i
++)
4077 if (finfo
.section_info
[i
].relocs
!= NULL
)
4078 free (finfo
.section_info
[i
].relocs
);
4079 if (finfo
.section_info
[i
].rel_hashes
!= NULL
)
4080 free (finfo
.section_info
[i
].rel_hashes
);
4082 free (finfo
.section_info
);
4083 finfo
.section_info
= NULL
;
4086 /* Write out the loader section contents. */
4087 BFD_ASSERT ((bfd_byte
*) finfo
.ldrel
4088 == (xcoff_hash_table (info
)->loader_section
->contents
4089 + xcoff_hash_table (info
)->ldhdr
.l_impoff
));
4090 o
= xcoff_hash_table (info
)->loader_section
;
4091 if (! bfd_set_section_contents (abfd
, o
->output_section
,
4092 o
->contents
, o
->output_offset
,
4096 /* Write out the magic sections. */
4097 o
= xcoff_hash_table (info
)->linkage_section
;
4098 if (o
->_raw_size
> 0
4099 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
4100 o
->output_offset
, o
->_raw_size
))
4102 o
= xcoff_hash_table (info
)->toc_section
;
4103 if (o
->_raw_size
> 0
4104 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
4105 o
->output_offset
, o
->_raw_size
))
4107 o
= xcoff_hash_table (info
)->descriptor_section
;
4108 if (o
->_raw_size
> 0
4109 && ! bfd_set_section_contents (abfd
, o
->output_section
, o
->contents
,
4110 o
->output_offset
, o
->_raw_size
))
4113 /* Write out the string table. */
4115 (obj_sym_filepos (abfd
)
4116 + obj_raw_syment_count (abfd
) * symesz
),
4120 _bfd_stringtab_size (finfo
.strtab
) + STRING_SIZE_SIZE
,
4121 (bfd_byte
*) strbuf
);
4122 if (bfd_write (strbuf
, 1, STRING_SIZE_SIZE
, abfd
) != STRING_SIZE_SIZE
)
4124 if (! _bfd_stringtab_emit (abfd
, finfo
.strtab
))
4127 _bfd_stringtab_free (finfo
.strtab
);
4129 /* Write out the debugging string table. */
4130 o
= xcoff_hash_table (info
)->debug_section
;
4133 struct bfd_strtab_hash
*debug_strtab
;
4135 debug_strtab
= xcoff_hash_table (info
)->debug_strtab
;
4136 BFD_ASSERT (o
->output_section
->_raw_size
- o
->output_offset
4137 >= _bfd_stringtab_size (debug_strtab
));
4139 o
->output_section
->filepos
+ o
->output_offset
,
4142 if (! _bfd_stringtab_emit (abfd
, debug_strtab
))
4146 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
4147 not try to write out the symbols. */
4148 bfd_get_symcount (abfd
) = 0;
4153 if (finfo
.strtab
!= NULL
)
4154 _bfd_stringtab_free (finfo
.strtab
);
4155 if (finfo
.section_info
!= NULL
)
4159 for (i
= 0; i
< abfd
->section_count
; i
++)
4161 if (finfo
.section_info
[i
].relocs
!= NULL
)
4162 free (finfo
.section_info
[i
].relocs
);
4163 if (finfo
.section_info
[i
].rel_hashes
!= NULL
)
4164 free (finfo
.section_info
[i
].rel_hashes
);
4166 free (finfo
.section_info
);
4168 if (finfo
.internal_syms
!= NULL
)
4169 free (finfo
.internal_syms
);
4170 if (finfo
.sym_indices
!= NULL
)
4171 free (finfo
.sym_indices
);
4172 if (finfo
.outsyms
!= NULL
)
4173 free (finfo
.outsyms
);
4174 if (finfo
.linenos
!= NULL
)
4175 free (finfo
.linenos
);
4176 if (finfo
.contents
!= NULL
)
4177 free (finfo
.contents
);
4178 if (finfo
.external_relocs
!= NULL
)
4179 free (finfo
.external_relocs
);
4180 if (external_relocs
!= NULL
)
4181 free (external_relocs
);
4185 /* Link an input file into the linker output file. This function
4186 handles all the sections and relocations of the input file at once. */
4189 xcoff_link_input_bfd (finfo
, input_bfd
)
4190 struct xcoff_final_link_info
*finfo
;
4194 const char *strings
;
4195 bfd_size_type syment_base
;
4196 unsigned int n_tmask
;
4197 unsigned int n_btshft
;
4199 bfd_size_type isymesz
;
4200 bfd_size_type osymesz
;
4201 bfd_size_type linesz
;
4204 struct xcoff_link_hash_entry
**sym_hash
;
4205 struct internal_syment
*isymp
;
4207 unsigned long *debug_index
;
4209 unsigned long output_index
;
4216 /* We can just skip DYNAMIC files, unless this is a static link. */
4217 if ((input_bfd
->flags
& DYNAMIC
) != 0
4218 && ! finfo
->info
->static_link
)
4221 /* Move all the symbols to the output file. */
4223 output_bfd
= finfo
->output_bfd
;
4225 syment_base
= obj_raw_syment_count (output_bfd
);
4226 isymesz
= bfd_coff_symesz (input_bfd
);
4227 osymesz
= bfd_coff_symesz (output_bfd
);
4228 linesz
= bfd_coff_linesz (input_bfd
);
4229 BFD_ASSERT (linesz
== bfd_coff_linesz (output_bfd
));
4231 n_tmask
= coff_data (input_bfd
)->local_n_tmask
;
4232 n_btshft
= coff_data (input_bfd
)->local_n_btshft
;
4234 /* Define macros so that ISFCN, et. al., macros work correctly. */
4235 #define N_TMASK n_tmask
4236 #define N_BTSHFT n_btshft
4239 if (! finfo
->info
->keep_memory
)
4242 if ((output_bfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
4245 if (! _bfd_coff_get_external_symbols (input_bfd
))
4248 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4249 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4250 sym_hash
= obj_xcoff_sym_hashes (input_bfd
);
4251 csectpp
= xcoff_data (input_bfd
)->csects
;
4252 debug_index
= xcoff_data (input_bfd
)->debug_indices
;
4253 isymp
= finfo
->internal_syms
;
4254 indexp
= finfo
->sym_indices
;
4255 output_index
= syment_base
;
4256 outsym
= finfo
->outsyms
;
4260 while (esym
< esym_end
)
4262 struct internal_syment isym
;
4263 union internal_auxent aux
;
4269 bfd_coff_swap_sym_in (input_bfd
, (PTR
) esym
, (PTR
) isymp
);
4271 /* If this is a C_EXT or C_HIDEXT symbol, we need the csect
4273 if (isymp
->n_sclass
== C_EXT
|| isymp
->n_sclass
== C_HIDEXT
)
4275 BFD_ASSERT (isymp
->n_numaux
> 0);
4276 bfd_coff_swap_aux_in (input_bfd
,
4277 (PTR
) (esym
+ isymesz
* isymp
->n_numaux
),
4278 isymp
->n_type
, isymp
->n_sclass
,
4279 isymp
->n_numaux
- 1, isymp
->n_numaux
,
4281 smtyp
= SMTYP_SMTYP (aux
.x_csect
.x_smtyp
);
4284 /* Make a copy of *isymp so that the relocate_section function
4285 always sees the original values. This is more reliable than
4286 always recomputing the symbol value even if we are stripping
4290 /* If this symbol is in the .loader section, swap out the
4291 .loader symbol information. If this is an external symbol
4292 reference to a defined symbol, though, then wait until we get
4293 to the definition. */
4294 if (isym
.n_sclass
== C_EXT
4295 && *sym_hash
!= NULL
4296 && (*sym_hash
)->ldsym
!= NULL
4298 || (*sym_hash
)->root
.type
== bfd_link_hash_undefined
))
4300 struct xcoff_link_hash_entry
*h
;
4301 struct internal_ldsym
*ldsym
;
4305 if (isym
.n_scnum
> 0)
4307 ldsym
->l_scnum
= (*csectpp
)->output_section
->target_index
;
4308 ldsym
->l_value
= (isym
.n_value
4309 + (*csectpp
)->output_section
->vma
4310 + (*csectpp
)->output_offset
4315 ldsym
->l_scnum
= isym
.n_scnum
;
4316 ldsym
->l_value
= isym
.n_value
;
4319 ldsym
->l_smtype
= smtyp
;
4320 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
4321 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4322 || (h
->flags
& XCOFF_IMPORT
) != 0)
4323 ldsym
->l_smtype
|= L_IMPORT
;
4324 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
4325 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
4326 || (h
->flags
& XCOFF_EXPORT
) != 0)
4327 ldsym
->l_smtype
|= L_EXPORT
;
4328 if ((h
->flags
& XCOFF_ENTRY
) != 0)
4329 ldsym
->l_smtype
|= L_ENTRY
;
4331 ldsym
->l_smclas
= aux
.x_csect
.x_smclas
;
4333 if (ldsym
->l_ifile
== (bfd_size_type
) -1)
4335 else if (ldsym
->l_ifile
== 0)
4337 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
4343 if (h
->root
.type
== bfd_link_hash_defined
4344 || h
->root
.type
== bfd_link_hash_defweak
)
4345 impbfd
= h
->root
.u
.def
.section
->owner
;
4346 else if (h
->root
.type
== bfd_link_hash_undefined
4347 || h
->root
.type
== bfd_link_hash_undefweak
)
4348 impbfd
= h
->root
.u
.undef
.abfd
;
4356 BFD_ASSERT (impbfd
->xvec
== finfo
->output_bfd
->xvec
);
4357 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
4364 BFD_ASSERT (h
->ldindx
>= 0);
4365 BFD_ASSERT (LDSYMSZ
== sizeof (struct external_ldsym
));
4366 xcoff_swap_ldsym_out (finfo
->output_bfd
, ldsym
,
4367 finfo
->ldsym
+ h
->ldindx
- 3);
4370 /* Fill in snentry now that we know the target_index. */
4371 if ((h
->flags
& XCOFF_ENTRY
) != 0
4372 && (h
->root
.type
== bfd_link_hash_defined
4373 || h
->root
.type
== bfd_link_hash_defweak
))
4374 xcoff_data (output_bfd
)->snentry
=
4375 h
->root
.u
.def
.section
->output_section
->target_index
;
4382 add
= 1 + isym
.n_numaux
;
4384 /* If we are skipping this csect, we want to skip this symbol. */
4385 if (*csectpp
== NULL
)
4388 /* If we garbage collected this csect, we want to skip this
4391 && xcoff_hash_table (finfo
->info
)->gc
4392 && ((*csectpp
)->flags
& SEC_MARK
) == 0
4393 && *csectpp
!= bfd_abs_section_ptr
)
4396 /* An XCOFF linker always skips C_STAT symbols. */
4398 && isymp
->n_sclass
== C_STAT
)
4401 /* We skip all but the first TOC anchor. */
4403 && isymp
->n_sclass
== C_HIDEXT
4404 && aux
.x_csect
.x_smclas
== XMC_TC0
)
4406 if (finfo
->toc_symindx
!= -1)
4410 bfd_vma tocval
, tocend
;
4412 tocval
= ((*csectpp
)->output_section
->vma
4413 + (*csectpp
)->output_offset
4416 /* We want to find out if tocval is a good value to use
4417 as the TOC anchor--that is, whether we can access all
4418 of the TOC using a 16 bit offset from tocval. This
4419 test assumes that the TOC comes at the end of the
4420 output section, as it does in the default linker
4423 tocend
= ((*csectpp
)->output_section
->vma
4424 + (*csectpp
)->output_section
->_raw_size
);
4426 if (tocval
+ 0x10000 < tocend
)
4428 (*_bfd_error_handler
)
4429 ("TOC overflow: 0x%lx > 0x10000; try -mminimal-toc when compiling",
4430 (unsigned long) (tocend
- tocval
));
4431 bfd_set_error (bfd_error_file_too_big
);
4435 if (tocval
+ 0x8000 < tocend
)
4439 tocadd
= tocend
- (tocval
+ 0x8000);
4441 isym
.n_value
+= tocadd
;
4444 finfo
->toc_symindx
= output_index
;
4445 xcoff_data (finfo
->output_bfd
)->toc
= tocval
;
4446 xcoff_data (finfo
->output_bfd
)->sntoc
=
4447 (*csectpp
)->output_section
->target_index
;
4452 /* If we are stripping all symbols, we want to skip this one. */
4454 && finfo
->info
->strip
== strip_all
)
4457 /* We can skip resolved external references. */
4459 && isym
.n_sclass
== C_EXT
4461 && (*sym_hash
)->root
.type
!= bfd_link_hash_undefined
)
4464 /* We can skip common symbols if they got defined somewhere
4467 && isym
.n_sclass
== C_EXT
4469 && ((*sym_hash
)->root
.type
!= bfd_link_hash_common
4470 || (*sym_hash
)->root
.u
.c
.p
->section
!= *csectpp
)
4471 && ((*sym_hash
)->root
.type
!= bfd_link_hash_defined
4472 || (*sym_hash
)->root
.u
.def
.section
!= *csectpp
))
4475 /* Skip local symbols if we are discarding them. */
4477 && finfo
->info
->discard
== discard_all
4478 && isym
.n_sclass
!= C_EXT
4479 && (isym
.n_sclass
!= C_HIDEXT
4480 || smtyp
!= XTY_SD
))
4483 /* If we stripping debugging symbols, and this is a debugging
4484 symbol, then skip it. */
4486 && finfo
->info
->strip
== strip_debugger
4487 && isym
.n_scnum
== N_DEBUG
)
4490 /* If some symbols are stripped based on the name, work out the
4491 name and decide whether to skip this symbol. We don't handle
4492 this correctly for symbols whose names are in the .debug
4493 section; to get it right we would need a new bfd_strtab_hash
4494 function to return the string given the index. */
4496 && (finfo
->info
->strip
== strip_some
4497 || finfo
->info
->discard
== discard_l
)
4498 && (debug_index
== NULL
|| *debug_index
== (unsigned long) -1))
4501 char buf
[SYMNMLEN
+ 1];
4503 name
= _bfd_coff_internal_syment_name (input_bfd
, &isym
, buf
);
4507 if ((finfo
->info
->strip
== strip_some
4508 && (bfd_hash_lookup (finfo
->info
->keep_hash
, name
, false,
4510 || (finfo
->info
->discard
== discard_l
4511 && (isym
.n_sclass
!= C_EXT
4512 && (isym
.n_sclass
!= C_HIDEXT
4513 || smtyp
!= XTY_SD
))
4514 && strncmp (name
, finfo
->info
->lprefix
,
4515 finfo
->info
->lprefix_len
) == 0))
4519 /* We can not skip the first TOC anchor. */
4522 && finfo
->info
->strip
!= strip_all
)
4525 /* We now know whether we are to skip this symbol or not. */
4528 /* Adjust the symbol in order to output it. */
4530 if (isym
._n
._n_n
._n_zeroes
== 0
4531 && isym
._n
._n_n
._n_offset
!= 0)
4533 /* This symbol has a long name. Enter it in the string
4534 table we are building. If *debug_index != -1, the
4535 name has already been entered in the .debug section. */
4536 if (debug_index
!= NULL
&& *debug_index
!= (unsigned long) -1)
4537 isym
._n
._n_n
._n_offset
= *debug_index
;
4543 name
= _bfd_coff_internal_syment_name (input_bfd
, &isym
,
4547 indx
= _bfd_stringtab_add (finfo
->strtab
, name
, hash
, copy
);
4548 if (indx
== (bfd_size_type
) -1)
4550 isym
._n
._n_n
._n_offset
= STRING_SIZE_SIZE
+ indx
;
4554 if (isym
.n_sclass
!= C_BSTAT
4555 && isym
.n_sclass
!= C_ESTAT
4556 && isym
.n_sclass
!= C_DECL
4557 && isym
.n_scnum
> 0)
4559 isym
.n_scnum
= (*csectpp
)->output_section
->target_index
;
4560 isym
.n_value
+= ((*csectpp
)->output_section
->vma
4561 + (*csectpp
)->output_offset
4565 /* The value of a C_FILE symbol is the symbol index of the
4566 next C_FILE symbol. The value of the last C_FILE symbol
4567 is -1. We try to get this right, below, just before we
4568 write the symbols out, but in the general case we may
4569 have to write the symbol out twice. */
4570 if (isym
.n_sclass
== C_FILE
)
4572 if (finfo
->last_file_index
!= -1
4573 && finfo
->last_file
.n_value
!= (long) output_index
)
4575 /* We must correct the value of the last C_FILE entry. */
4576 finfo
->last_file
.n_value
= output_index
;
4577 if ((bfd_size_type
) finfo
->last_file_index
>= syment_base
)
4579 /* The last C_FILE symbol is in this input file. */
4580 bfd_coff_swap_sym_out (output_bfd
,
4581 (PTR
) &finfo
->last_file
,
4582 (PTR
) (finfo
->outsyms
4583 + ((finfo
->last_file_index
4589 /* We have already written out the last C_FILE
4590 symbol. We need to write it out again. We
4591 borrow *outsym temporarily. */
4592 bfd_coff_swap_sym_out (output_bfd
,
4593 (PTR
) &finfo
->last_file
,
4595 if (bfd_seek (output_bfd
,
4596 (obj_sym_filepos (output_bfd
)
4597 + finfo
->last_file_index
* osymesz
),
4599 || (bfd_write (outsym
, osymesz
, 1, output_bfd
)
4605 finfo
->last_file_index
= output_index
;
4606 finfo
->last_file
= isym
;
4609 /* The value of a C_BINCL or C_EINCL symbol is a file offset
4610 into the line numbers. We update the symbol values when
4611 we handle the line numbers. */
4612 if (isym
.n_sclass
== C_BINCL
4613 || isym
.n_sclass
== C_EINCL
)
4615 isym
.n_value
= finfo
->line_filepos
;
4619 /* Output the symbol. */
4621 bfd_coff_swap_sym_out (output_bfd
, (PTR
) &isym
, (PTR
) outsym
);
4623 *indexp
= output_index
;
4625 if (isym
.n_sclass
== C_EXT
)
4628 struct xcoff_link_hash_entry
*h
;
4630 indx
= ((esym
- (bfd_byte
*) obj_coff_external_syms (input_bfd
))
4632 h
= obj_xcoff_sym_hashes (input_bfd
)[indx
];
4633 BFD_ASSERT (h
!= NULL
);
4634 h
->indx
= output_index
;
4637 /* If this is a symbol in the TOC which we may have merged
4638 (class XMC_TC), remember the symbol index of the TOC
4640 if (isym
.n_sclass
== C_HIDEXT
4641 && aux
.x_csect
.x_smclas
== XMC_TC
4642 && *sym_hash
!= NULL
)
4644 BFD_ASSERT (((*sym_hash
)->flags
& XCOFF_SET_TOC
) == 0);
4645 BFD_ASSERT ((*sym_hash
)->toc_section
!= NULL
);
4646 (*sym_hash
)->u
.toc_indx
= output_index
;
4649 output_index
+= add
;
4650 outsym
+= add
* osymesz
;
4653 esym
+= add
* isymesz
;
4657 if (debug_index
!= NULL
)
4660 for (--add
; add
> 0; --add
)
4664 /* Fix up the aux entries and the C_BSTAT symbols. This must be
4665 done in a separate pass, because we don't know the correct symbol
4666 indices until we have already decided which symbols we are going
4669 esym
= (bfd_byte
*) obj_coff_external_syms (input_bfd
);
4670 esym_end
= esym
+ obj_raw_syment_count (input_bfd
) * isymesz
;
4671 isymp
= finfo
->internal_syms
;
4672 indexp
= finfo
->sym_indices
;
4673 csectpp
= xcoff_data (input_bfd
)->csects
;
4674 outsym
= finfo
->outsyms
;
4675 while (esym
< esym_end
)
4679 add
= 1 + isymp
->n_numaux
;
4682 esym
+= add
* isymesz
;
4687 if (isymp
->n_sclass
== C_BSTAT
)
4689 struct internal_syment isym
;
4692 /* The value of a C_BSTAT symbol is the symbol table
4693 index of the containing csect. */
4694 bfd_coff_swap_sym_in (output_bfd
, (PTR
) outsym
, (PTR
) &isym
);
4695 indx
= isym
.n_value
;
4696 if (indx
< obj_raw_syment_count (input_bfd
))
4700 symindx
= finfo
->sym_indices
[indx
];
4704 isym
.n_value
= symindx
;
4705 bfd_coff_swap_sym_out (output_bfd
, (PTR
) &isym
,
4713 for (i
= 0; i
< isymp
->n_numaux
&& esym
< esym_end
; i
++)
4715 union internal_auxent aux
;
4717 bfd_coff_swap_aux_in (input_bfd
, (PTR
) esym
, isymp
->n_type
,
4718 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4721 if (isymp
->n_sclass
== C_FILE
)
4723 /* This is the file name (or some comment put in by
4724 the compiler). If it is long, we must put it in
4725 the string table. */
4726 if (aux
.x_file
.x_n
.x_zeroes
== 0
4727 && aux
.x_file
.x_n
.x_offset
!= 0)
4729 const char *filename
;
4732 BFD_ASSERT (aux
.x_file
.x_n
.x_offset
4733 >= STRING_SIZE_SIZE
);
4734 if (strings
== NULL
)
4736 strings
= _bfd_coff_read_string_table (input_bfd
);
4737 if (strings
== NULL
)
4740 filename
= strings
+ aux
.x_file
.x_n
.x_offset
;
4741 indx
= _bfd_stringtab_add (finfo
->strtab
, filename
,
4743 if (indx
== (bfd_size_type
) -1)
4745 aux
.x_file
.x_n
.x_offset
= STRING_SIZE_SIZE
+ indx
;
4748 else if ((isymp
->n_sclass
== C_EXT
4749 || isymp
->n_sclass
== C_HIDEXT
)
4750 && i
+ 1 == isymp
->n_numaux
)
4752 /* We don't support type checking. I don't know if
4754 aux
.x_csect
.x_parmhash
= 0;
4755 /* I don't think anybody uses these fields, but we'd
4756 better clobber them just in case. */
4757 aux
.x_csect
.x_stab
= 0;
4758 aux
.x_csect
.x_snstab
= 0;
4759 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_LD
)
4763 indx
= aux
.x_csect
.x_scnlen
.l
;
4764 if (indx
< obj_raw_syment_count (input_bfd
))
4768 symindx
= finfo
->sym_indices
[indx
];
4770 aux
.x_sym
.x_tagndx
.l
= 0;
4772 aux
.x_sym
.x_tagndx
.l
= symindx
;
4776 else if (isymp
->n_sclass
!= C_STAT
|| isymp
->n_type
!= T_NULL
)
4780 if (ISFCN (isymp
->n_type
)
4781 || ISTAG (isymp
->n_sclass
)
4782 || isymp
->n_sclass
== C_BLOCK
4783 || isymp
->n_sclass
== C_FCN
)
4785 indx
= aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
;
4787 && indx
< obj_raw_syment_count (input_bfd
))
4789 /* We look forward through the symbol for
4790 the index of the next symbol we are going
4791 to include. I don't know if this is
4793 while (finfo
->sym_indices
[indx
] < 0
4794 && indx
< obj_raw_syment_count (input_bfd
))
4796 if (indx
>= obj_raw_syment_count (input_bfd
))
4797 indx
= output_index
;
4799 indx
= finfo
->sym_indices
[indx
];
4800 aux
.x_sym
.x_fcnary
.x_fcn
.x_endndx
.l
= indx
;
4804 indx
= aux
.x_sym
.x_tagndx
.l
;
4805 if (indx
> 0 && indx
< obj_raw_syment_count (input_bfd
))
4809 symindx
= finfo
->sym_indices
[indx
];
4811 aux
.x_sym
.x_tagndx
.l
= 0;
4813 aux
.x_sym
.x_tagndx
.l
= symindx
;
4817 /* Copy over the line numbers, unless we are stripping
4818 them. We do this on a symbol by symbol basis in
4819 order to more easily handle garbage collection. */
4820 if ((isymp
->n_sclass
== C_EXT
4821 || isymp
->n_sclass
== C_HIDEXT
)
4823 && isymp
->n_numaux
> 1
4824 && ISFCN (isymp
->n_type
)
4825 && aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
!= 0)
4827 if (finfo
->info
->strip
!= strip_none
4828 && finfo
->info
->strip
!= strip_some
)
4829 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= 0;
4832 asection
*enclosing
;
4833 unsigned int enc_count
;
4834 bfd_size_type linoff
;
4835 struct internal_lineno lin
;
4838 enclosing
= xcoff_section_data (abfd
, o
)->enclosing
;
4839 enc_count
= xcoff_section_data (abfd
, o
)->lineno_count
;
4840 if (oline
!= enclosing
)
4842 if (bfd_seek (input_bfd
,
4843 enclosing
->line_filepos
,
4845 || (bfd_read (finfo
->linenos
, linesz
,
4846 enc_count
, input_bfd
)
4847 != linesz
* enc_count
))
4852 linoff
= (aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
4853 - enclosing
->line_filepos
);
4855 bfd_coff_swap_lineno_in (input_bfd
,
4856 (PTR
) (finfo
->linenos
+ linoff
),
4859 || ((bfd_size_type
) lin
.l_addr
.l_symndx
4863 obj_coff_external_syms (input_bfd
)))
4865 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
= 0;
4868 bfd_byte
*linpend
, *linp
;
4870 bfd_size_type count
;
4872 lin
.l_addr
.l_symndx
= *indexp
;
4873 bfd_coff_swap_lineno_out (output_bfd
, (PTR
) &lin
,
4874 (PTR
) (finfo
->linenos
4877 linpend
= (finfo
->linenos
4878 + enc_count
* linesz
);
4879 offset
= (o
->output_section
->vma
4882 for (linp
= finfo
->linenos
+ linoff
+ linesz
;
4886 bfd_coff_swap_lineno_in (input_bfd
, (PTR
) linp
,
4888 if (lin
.l_lnno
== 0)
4890 lin
.l_addr
.l_paddr
+= offset
;
4891 bfd_coff_swap_lineno_out (output_bfd
,
4896 count
= (linp
- (finfo
->linenos
+ linoff
)) / linesz
;
4898 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
=
4899 (o
->output_section
->line_filepos
4900 + o
->output_section
->lineno_count
* linesz
);
4902 if (bfd_seek (output_bfd
,
4903 aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
,
4905 || (bfd_write (finfo
->linenos
+ linoff
,
4906 linesz
, count
, output_bfd
)
4910 o
->output_section
->lineno_count
+= count
;
4914 struct internal_syment
*iisp
, *iispend
;
4919 /* Update any C_BINCL or C_EINCL symbols
4920 that refer to a line number in the
4921 range we just output. */
4922 iisp
= finfo
->internal_syms
;
4924 + obj_raw_syment_count (input_bfd
));
4925 iindp
= finfo
->sym_indices
;
4926 oos
= finfo
->outsyms
;
4927 while (iisp
< iispend
)
4930 && (iisp
->n_sclass
== C_BINCL
4931 || iisp
->n_sclass
== C_EINCL
)
4932 && ((bfd_size_type
) iisp
->n_value
4933 >= enclosing
->line_filepos
+ linoff
)
4934 && ((bfd_size_type
) iisp
->n_value
4935 < (enclosing
->line_filepos
4936 + enc_count
* linesz
)))
4938 struct internal_syment iis
;
4940 bfd_coff_swap_sym_in (output_bfd
,
4945 - enclosing
->line_filepos
4947 + aux
.x_sym
.x_fcnary
.x_fcn
.x_lnnoptr
);
4948 bfd_coff_swap_sym_out (output_bfd
,
4954 iiadd
= 1 + iisp
->n_numaux
;
4956 oos
+= iiadd
* osymesz
;
4965 bfd_coff_swap_aux_out (output_bfd
, (PTR
) &aux
, isymp
->n_type
,
4966 isymp
->n_sclass
, i
, isymp
->n_numaux
,
4978 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
4979 symbol will be the first symbol in the next input file. In the
4980 normal case, this will save us from writing out the C_FILE symbol
4982 if (finfo
->last_file_index
!= -1
4983 && (bfd_size_type
) finfo
->last_file_index
>= syment_base
)
4985 finfo
->last_file
.n_value
= output_index
;
4986 bfd_coff_swap_sym_out (output_bfd
, (PTR
) &finfo
->last_file
,
4987 (PTR
) (finfo
->outsyms
4988 + ((finfo
->last_file_index
- syment_base
)
4992 /* Write the modified symbols to the output file. */
4993 if (outsym
> finfo
->outsyms
)
4995 if (bfd_seek (output_bfd
,
4996 obj_sym_filepos (output_bfd
) + syment_base
* osymesz
,
4998 || (bfd_write (finfo
->outsyms
, outsym
- finfo
->outsyms
, 1,
5000 != (bfd_size_type
) (outsym
- finfo
->outsyms
)))
5003 BFD_ASSERT ((obj_raw_syment_count (output_bfd
)
5004 + (outsym
- finfo
->outsyms
) / osymesz
)
5007 obj_raw_syment_count (output_bfd
) = output_index
;
5010 /* Don't let the linker relocation routines discard the symbols. */
5011 keep_syms
= obj_coff_keep_syms (input_bfd
);
5012 obj_coff_keep_syms (input_bfd
) = true;
5014 /* Relocate the contents of each section. */
5015 for (o
= input_bfd
->sections
; o
!= NULL
; o
= o
->next
)
5019 if (! o
->linker_mark
)
5021 /* This section was omitted from the link. */
5025 if ((o
->flags
& SEC_HAS_CONTENTS
) == 0
5026 || o
->_raw_size
== 0
5027 || (o
->flags
& SEC_IN_MEMORY
) != 0)
5030 /* We have set filepos correctly for the sections we created to
5031 represent csects, so bfd_get_section_contents should work. */
5032 if (coff_section_data (input_bfd
, o
) != NULL
5033 && coff_section_data (input_bfd
, o
)->contents
!= NULL
)
5034 contents
= coff_section_data (input_bfd
, o
)->contents
;
5037 if (! bfd_get_section_contents (input_bfd
, o
, finfo
->contents
,
5038 (file_ptr
) 0, o
->_raw_size
))
5040 contents
= finfo
->contents
;
5043 if ((o
->flags
& SEC_RELOC
) != 0)
5046 struct internal_reloc
*internal_relocs
;
5047 struct internal_reloc
*irel
;
5049 struct internal_reloc
*irelend
;
5050 struct xcoff_link_hash_entry
**rel_hash
;
5053 /* Read in the relocs. */
5054 target_index
= o
->output_section
->target_index
;
5055 internal_relocs
= (xcoff_read_internal_relocs
5056 (input_bfd
, o
, false, finfo
->external_relocs
,
5058 (finfo
->section_info
[target_index
].relocs
5059 + o
->output_section
->reloc_count
)));
5060 if (internal_relocs
== NULL
)
5063 /* Call processor specific code to relocate the section
5065 if (! bfd_coff_relocate_section (output_bfd
, finfo
->info
,
5069 finfo
->internal_syms
,
5070 xcoff_data (input_bfd
)->csects
))
5073 offset
= o
->output_section
->vma
+ o
->output_offset
- o
->vma
;
5074 irel
= internal_relocs
;
5075 irelend
= irel
+ o
->reloc_count
;
5076 rel_hash
= (finfo
->section_info
[target_index
].rel_hashes
5077 + o
->output_section
->reloc_count
);
5078 for (; irel
< irelend
; irel
++, rel_hash
++)
5080 struct xcoff_link_hash_entry
*h
= NULL
;
5081 struct internal_ldrel ldrel
;
5085 /* Adjust the reloc address and symbol index. */
5087 irel
->r_vaddr
+= offset
;
5089 r_symndx
= irel
->r_symndx
;
5093 h
= obj_xcoff_sym_hashes (input_bfd
)[r_symndx
];
5095 && (irel
->r_type
== R_TOC
5096 || irel
->r_type
== R_GL
5097 || irel
->r_type
== R_TCL
5098 || irel
->r_type
== R_TRL
5099 || irel
->r_type
== R_TRLA
))
5101 /* This is a TOC relative reloc with a symbol
5102 attached. The symbol should be the one which
5103 this reloc is for. We want to make this
5104 reloc against the TOC address of the symbol,
5105 not the symbol itself. */
5106 BFD_ASSERT (h
->toc_section
!= NULL
);
5107 BFD_ASSERT ((h
->flags
& XCOFF_SET_TOC
) == 0);
5108 if (h
->u
.toc_indx
!= -1)
5109 irel
->r_symndx
= h
->u
.toc_indx
;
5112 struct xcoff_toc_rel_hash
*n
;
5113 struct xcoff_link_section_info
*si
;
5115 n
= ((struct xcoff_toc_rel_hash
*)
5116 bfd_alloc (finfo
->output_bfd
,
5117 sizeof (struct xcoff_toc_rel_hash
)));
5120 si
= finfo
->section_info
+ target_index
;
5121 n
->next
= si
->toc_rel_hashes
;
5124 si
->toc_rel_hashes
= n
;
5129 /* This is a global symbol. */
5131 irel
->r_symndx
= h
->indx
;
5134 /* This symbol is being written at the end
5135 of the file, and we do not yet know the
5136 symbol index. We save the pointer to the
5137 hash table entry in the rel_hash list.
5138 We set the indx field to -2 to indicate
5139 that this symbol must not be stripped. */
5148 indx
= finfo
->sym_indices
[r_symndx
];
5152 struct internal_syment
*is
;
5154 /* Relocations against a TC0 TOC anchor are
5155 automatically transformed to be against
5156 the TOC anchor in the output file. */
5157 is
= finfo
->internal_syms
+ r_symndx
;
5158 if (is
->n_sclass
== C_HIDEXT
5159 && is
->n_numaux
> 0)
5162 union internal_auxent aux
;
5166 obj_coff_external_syms (input_bfd
))
5167 + ((r_symndx
+ is
->n_numaux
)
5169 bfd_coff_swap_aux_in (input_bfd
, auxptr
,
5170 is
->n_type
, is
->n_sclass
,
5174 if (SMTYP_SMTYP (aux
.x_csect
.x_smtyp
) == XTY_SD
5175 && aux
.x_csect
.x_smclas
== XMC_TC0
)
5176 indx
= finfo
->toc_symindx
;
5181 irel
->r_symndx
= indx
;
5184 struct internal_syment
*is
;
5186 char buf
[SYMNMLEN
+ 1];
5188 /* This reloc is against a symbol we are
5189 stripping. It would be possible to handle
5190 this case, but I don't think it's worth it. */
5191 is
= finfo
->internal_syms
+ r_symndx
;
5193 name
= (_bfd_coff_internal_syment_name
5194 (input_bfd
, is
, buf
));
5198 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
5199 (finfo
->info
, name
, input_bfd
, o
,
5206 switch (irel
->r_type
)
5210 || h
->root
.type
== bfd_link_hash_defined
5211 || h
->root
.type
== bfd_link_hash_defweak
5212 || h
->root
.type
== bfd_link_hash_common
)
5219 /* This reloc needs to be copied into the .loader
5221 ldrel
.l_vaddr
= irel
->r_vaddr
;
5223 ldrel
.l_symndx
= -1;
5225 || (h
->root
.type
== bfd_link_hash_defined
5226 || h
->root
.type
== bfd_link_hash_defweak
5227 || h
->root
.type
== bfd_link_hash_common
))
5232 sec
= xcoff_data (input_bfd
)->csects
[r_symndx
];
5233 else if (h
->root
.type
== bfd_link_hash_common
)
5234 sec
= h
->root
.u
.c
.p
->section
;
5236 sec
= h
->root
.u
.def
.section
;
5237 sec
= sec
->output_section
;
5239 if (strcmp (sec
->name
, ".text") == 0)
5241 else if (strcmp (sec
->name
, ".data") == 0)
5243 else if (strcmp (sec
->name
, ".bss") == 0)
5247 (*_bfd_error_handler
)
5248 ("%s: loader reloc in unrecognized section `%s'",
5249 bfd_get_filename (input_bfd
),
5251 bfd_set_error (bfd_error_nonrepresentable_section
);
5259 (*_bfd_error_handler
)
5260 ("%s: `%s' in loader reloc but not loader sym",
5261 bfd_get_filename (input_bfd
),
5262 h
->root
.root
.string
);
5263 bfd_set_error (bfd_error_bad_value
);
5266 ldrel
.l_symndx
= h
->ldindx
;
5268 ldrel
.l_rtype
= (irel
->r_size
<< 8) | irel
->r_type
;
5269 ldrel
.l_rsecnm
= o
->output_section
->target_index
;
5270 if (xcoff_hash_table (finfo
->info
)->textro
5271 && strcmp (o
->output_section
->name
, ".text") == 0)
5273 (*_bfd_error_handler
)
5274 ("%s: loader reloc in read-only section %s",
5275 bfd_get_filename (input_bfd
),
5276 bfd_get_section_name (finfo
->output_bfd
,
5277 o
->output_section
));
5278 bfd_set_error (bfd_error_invalid_operation
);
5281 xcoff_swap_ldrel_out (output_bfd
, &ldrel
,
5283 BFD_ASSERT (sizeof (struct external_ldrel
) == LDRELSZ
);
5292 /* We should never need a .loader reloc for a TOC
5298 o
->output_section
->reloc_count
+= o
->reloc_count
;
5301 /* Write out the modified section contents. */
5302 if (! bfd_set_section_contents (output_bfd
, o
->output_section
,
5303 contents
, o
->output_offset
,
5304 (o
->_cooked_size
!= 0
5310 obj_coff_keep_syms (input_bfd
) = keep_syms
;
5312 if (! finfo
->info
->keep_memory
)
5314 if (! _bfd_coff_free_symbols (input_bfd
))
5324 /* Write out a non-XCOFF global symbol. */
5327 xcoff_write_global_symbol (h
, p
)
5328 struct xcoff_link_hash_entry
*h
;
5331 struct xcoff_final_link_info
*finfo
= (struct xcoff_final_link_info
*) p
;
5334 struct internal_syment isym
;
5335 union internal_auxent aux
;
5337 output_bfd
= finfo
->output_bfd
;
5339 /* If this symbol was garbage collected, just skip it. */
5340 if (xcoff_hash_table (finfo
->info
)->gc
5341 && (h
->flags
& XCOFF_MARK
) == 0)
5344 /* If we need a .loader section entry, write it out. */
5345 if (h
->ldsym
!= NULL
)
5347 struct internal_ldsym
*ldsym
;
5352 if (h
->root
.type
== bfd_link_hash_undefined
5353 || h
->root
.type
== bfd_link_hash_undefweak
)
5356 ldsym
->l_scnum
= N_UNDEF
;
5357 ldsym
->l_smtype
= XTY_ER
;
5358 impbfd
= h
->root
.u
.undef
.abfd
;
5360 else if (h
->root
.type
== bfd_link_hash_defined
5361 || h
->root
.type
== bfd_link_hash_defweak
)
5365 sec
= h
->root
.u
.def
.section
;
5366 ldsym
->l_value
= (sec
->output_section
->vma
5367 + sec
->output_offset
5368 + h
->root
.u
.def
.value
);
5369 ldsym
->l_scnum
= sec
->output_section
->target_index
;
5370 ldsym
->l_smtype
= XTY_SD
;
5371 impbfd
= sec
->owner
;
5376 if (((h
->flags
& XCOFF_DEF_REGULAR
) == 0
5377 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5378 || (h
->flags
& XCOFF_IMPORT
) != 0)
5379 ldsym
->l_smtype
|= L_IMPORT
;
5380 if (((h
->flags
& XCOFF_DEF_REGULAR
) != 0
5381 && (h
->flags
& XCOFF_DEF_DYNAMIC
) != 0)
5382 || (h
->flags
& XCOFF_EXPORT
) != 0)
5383 ldsym
->l_smtype
|= L_EXPORT
;
5384 if ((h
->flags
& XCOFF_ENTRY
) != 0)
5385 ldsym
->l_smtype
|= L_ENTRY
;
5387 ldsym
->l_smclas
= h
->smclas
;
5389 if (ldsym
->l_ifile
== (bfd_size_type
) -1)
5391 else if (ldsym
->l_ifile
== 0)
5393 if ((ldsym
->l_smtype
& L_IMPORT
) == 0)
5395 else if (impbfd
== NULL
)
5399 BFD_ASSERT (impbfd
->xvec
== output_bfd
->xvec
);
5400 ldsym
->l_ifile
= xcoff_data (impbfd
)->import_file_id
;
5406 BFD_ASSERT (h
->ldindx
>= 0);
5407 BFD_ASSERT (LDSYMSZ
== sizeof (struct external_ldsym
));
5408 xcoff_swap_ldsym_out (output_bfd
, ldsym
, finfo
->ldsym
+ h
->ldindx
- 3);
5412 /* If this symbol needs global linkage code, write it out. */
5413 if (h
->root
.type
== bfd_link_hash_defined
5414 && (h
->root
.u
.def
.section
5415 == xcoff_hash_table (finfo
->info
)->linkage_section
))
5421 p
= h
->root
.u
.def
.section
->contents
+ h
->root
.u
.def
.value
;
5423 /* The first instruction in the global linkage code loads a
5424 specific TOC element. */
5425 tocoff
= (h
->descriptor
->toc_section
->output_section
->vma
5426 + h
->descriptor
->toc_section
->output_offset
5427 - xcoff_data (output_bfd
)->toc
);
5428 if ((h
->descriptor
->flags
& XCOFF_SET_TOC
) != 0)
5429 tocoff
+= h
->descriptor
->u
.toc_offset
;
5430 bfd_put_32 (output_bfd
, XCOFF_GLINK_FIRST
| (tocoff
& 0xffff), p
);
5432 i
< sizeof xcoff_glink_code
/ sizeof xcoff_glink_code
[0];
5434 bfd_put_32 (output_bfd
, xcoff_glink_code
[i
], p
);
5437 /* If we created a TOC entry for this symbol, write out the required
5439 if ((h
->flags
& XCOFF_SET_TOC
) != 0)
5444 struct internal_reloc
*irel
;
5445 struct internal_ldrel ldrel
;
5447 tocsec
= h
->toc_section
;
5448 osec
= tocsec
->output_section
;
5449 oindx
= osec
->target_index
;
5450 irel
= finfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5451 irel
->r_vaddr
= (osec
->vma
5452 + tocsec
->output_offset
5455 irel
->r_symndx
= h
->indx
;
5459 irel
->r_symndx
= obj_raw_syment_count (output_bfd
);
5461 irel
->r_type
= R_POS
;
5463 finfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5464 ++osec
->reloc_count
;
5466 BFD_ASSERT (h
->ldindx
>= 0);
5467 ldrel
.l_vaddr
= irel
->r_vaddr
;
5468 ldrel
.l_symndx
= h
->ldindx
;
5469 ldrel
.l_rtype
= (31 << 8) | R_POS
;
5470 ldrel
.l_rsecnm
= oindx
;
5471 xcoff_swap_ldrel_out (output_bfd
, &ldrel
, finfo
->ldrel
);
5475 /* If this symbol is a specially defined function descriptor, write
5476 it out. The first word is the address of the function code
5477 itself, the second word is the address of the TOC, and the third
5479 if ((h
->flags
& XCOFF_DESCRIPTOR
) != 0
5480 && h
->root
.type
== bfd_link_hash_defined
5481 && (h
->root
.u
.def
.section
5482 == xcoff_hash_table (finfo
->info
)->descriptor_section
))
5488 struct xcoff_link_hash_entry
*hentry
;
5490 struct internal_reloc
*irel
;
5491 struct internal_ldrel ldrel
;
5494 sec
= h
->root
.u
.def
.section
;
5495 osec
= sec
->output_section
;
5496 oindx
= osec
->target_index
;
5497 p
= sec
->contents
+ h
->root
.u
.def
.value
;
5499 hentry
= h
->descriptor
;
5500 BFD_ASSERT (hentry
!= NULL
5501 && (hentry
->root
.type
== bfd_link_hash_defined
5502 || hentry
->root
.type
== bfd_link_hash_defweak
));
5503 esec
= hentry
->root
.u
.def
.section
;
5504 bfd_put_32 (output_bfd
,
5505 (esec
->output_section
->vma
5506 + esec
->output_offset
5507 + hentry
->root
.u
.def
.value
),
5510 irel
= finfo
->section_info
[oindx
].relocs
+ osec
->reloc_count
;
5511 irel
->r_vaddr
= (osec
->vma
5512 + sec
->output_offset
5513 + h
->root
.u
.def
.value
);
5514 irel
->r_symndx
= esec
->output_section
->target_index
;
5515 irel
->r_type
= R_POS
;
5517 finfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5518 ++osec
->reloc_count
;
5520 ldrel
.l_vaddr
= irel
->r_vaddr
;
5521 if (strcmp (esec
->output_section
->name
, ".text") == 0)
5523 else if (strcmp (esec
->output_section
->name
, ".data") == 0)
5525 else if (strcmp (esec
->output_section
->name
, ".bss") == 0)
5529 (*_bfd_error_handler
)
5530 ("%s: loader reloc in unrecognized section `%s'",
5531 bfd_get_filename (output_bfd
),
5532 esec
->output_section
->name
);
5533 bfd_set_error (bfd_error_nonrepresentable_section
);
5536 ldrel
.l_rtype
= (31 << 8) | R_POS
;
5537 ldrel
.l_rsecnm
= oindx
;
5538 xcoff_swap_ldrel_out (output_bfd
, &ldrel
, finfo
->ldrel
);
5541 bfd_put_32 (output_bfd
, xcoff_data (output_bfd
)->toc
, p
+ 4);
5543 tsec
= coff_section_from_bfd_index (output_bfd
,
5544 xcoff_data (output_bfd
)->sntoc
);
5547 irel
->r_vaddr
= (osec
->vma
5548 + sec
->output_offset
5549 + h
->root
.u
.def
.value
5551 irel
->r_symndx
= tsec
->output_section
->target_index
;
5552 irel
->r_type
= R_POS
;
5554 finfo
->section_info
[oindx
].rel_hashes
[osec
->reloc_count
] = NULL
;
5555 ++osec
->reloc_count
;
5557 ldrel
.l_vaddr
= irel
->r_vaddr
;
5558 if (strcmp (tsec
->output_section
->name
, ".text") == 0)
5560 else if (strcmp (tsec
->output_section
->name
, ".data") == 0)
5562 else if (strcmp (tsec
->output_section
->name
, ".bss") == 0)
5566 (*_bfd_error_handler
)
5567 ("%s: loader reloc in unrecognized section `%s'",
5568 bfd_get_filename (output_bfd
),
5569 tsec
->output_section
->name
);
5570 bfd_set_error (bfd_error_nonrepresentable_section
);
5573 ldrel
.l_rtype
= (31 << 8) | R_POS
;
5574 ldrel
.l_rsecnm
= oindx
;
5575 xcoff_swap_ldrel_out (output_bfd
, &ldrel
, finfo
->ldrel
);
5583 && (finfo
->info
->strip
== strip_all
5584 || (finfo
->info
->strip
== strip_some
5585 && (bfd_hash_lookup (finfo
->info
->keep_hash
,
5586 h
->root
.root
.string
, false, false)
5591 && (h
->flags
& (XCOFF_REF_REGULAR
| XCOFF_DEF_REGULAR
)) == 0)
5594 outsym
= finfo
->outsyms
;
5596 memset (&aux
, 0, sizeof aux
);
5598 h
->indx
= obj_raw_syment_count (output_bfd
);
5600 if (strlen (h
->root
.root
.string
) <= SYMNMLEN
)
5601 strncpy (isym
._n
._n_name
, h
->root
.root
.string
, SYMNMLEN
);
5608 if ((output_bfd
->flags
& BFD_TRADITIONAL_FORMAT
) != 0)
5610 indx
= _bfd_stringtab_add (finfo
->strtab
, h
->root
.root
.string
, hash
,
5612 if (indx
== (bfd_size_type
) -1)
5614 isym
._n
._n_n
._n_zeroes
= 0;
5615 isym
._n
._n_n
._n_offset
= STRING_SIZE_SIZE
+ indx
;
5618 if (h
->root
.type
== bfd_link_hash_undefined
5619 || h
->root
.type
== bfd_link_hash_undefweak
)
5622 isym
.n_scnum
= N_UNDEF
;
5623 isym
.n_sclass
= C_EXT
;
5624 aux
.x_csect
.x_smtyp
= XTY_ER
;
5626 else if (h
->root
.type
== bfd_link_hash_defined
5627 || h
->root
.type
== bfd_link_hash_defweak
)
5629 struct xcoff_link_size_list
*l
;
5631 isym
.n_value
= (h
->root
.u
.def
.section
->output_section
->vma
5632 + h
->root
.u
.def
.section
->output_offset
5633 + h
->root
.u
.def
.value
);
5634 isym
.n_scnum
= h
->root
.u
.def
.section
->output_section
->target_index
;
5635 isym
.n_sclass
= C_HIDEXT
;
5636 aux
.x_csect
.x_smtyp
= XTY_SD
;
5638 if ((h
->flags
& XCOFF_HAS_SIZE
) != 0)
5640 for (l
= xcoff_hash_table (finfo
->info
)->size_list
;
5646 aux
.x_csect
.x_scnlen
.l
= l
->size
;
5652 else if (h
->root
.type
== bfd_link_hash_common
)
5654 isym
.n_value
= (h
->root
.u
.c
.p
->section
->output_section
->vma
5655 + h
->root
.u
.c
.p
->section
->output_offset
);
5656 isym
.n_scnum
= h
->root
.u
.c
.p
->section
->output_section
->target_index
;
5657 isym
.n_sclass
= C_EXT
;
5658 aux
.x_csect
.x_smtyp
= XTY_CM
;
5659 aux
.x_csect
.x_scnlen
.l
= h
->root
.u
.c
.size
;
5664 isym
.n_type
= T_NULL
;
5667 bfd_coff_swap_sym_out (output_bfd
, (PTR
) &isym
, (PTR
) outsym
);
5668 outsym
+= bfd_coff_symesz (output_bfd
);
5670 aux
.x_csect
.x_smclas
= h
->smclas
;
5672 bfd_coff_swap_aux_out (output_bfd
, (PTR
) &aux
, T_NULL
, isym
.n_sclass
, 0, 1,
5674 outsym
+= bfd_coff_auxesz (output_bfd
);
5676 if (h
->root
.type
== bfd_link_hash_defined
5677 || h
->root
.type
== bfd_link_hash_defweak
)
5679 /* We just output an SD symbol. Now output an LD symbol. */
5683 isym
.n_sclass
= C_EXT
;
5684 bfd_coff_swap_sym_out (output_bfd
, (PTR
) &isym
, (PTR
) outsym
);
5685 outsym
+= bfd_coff_symesz (output_bfd
);
5687 aux
.x_csect
.x_smtyp
= XTY_LD
;
5688 aux
.x_csect
.x_scnlen
.l
= obj_raw_syment_count (output_bfd
);
5690 bfd_coff_swap_aux_out (output_bfd
, (PTR
) &aux
, T_NULL
, C_EXT
, 0, 1,
5692 outsym
+= bfd_coff_auxesz (output_bfd
);
5695 if (bfd_seek (output_bfd
,
5696 (obj_sym_filepos (output_bfd
)
5697 + (obj_raw_syment_count (output_bfd
)
5698 * bfd_coff_symesz (output_bfd
))),
5700 || (bfd_write (finfo
->outsyms
, outsym
- finfo
->outsyms
, 1, output_bfd
)
5701 != (bfd_size_type
) (outsym
- finfo
->outsyms
)))
5703 obj_raw_syment_count (output_bfd
) +=
5704 (outsym
- finfo
->outsyms
) / bfd_coff_symesz (output_bfd
);
5709 /* Handle a link order which is supposed to generate a reloc. */
5712 xcoff_reloc_link_order (output_bfd
, finfo
, output_section
, link_order
)
5714 struct xcoff_final_link_info
*finfo
;
5715 asection
*output_section
;
5716 struct bfd_link_order
*link_order
;
5718 reloc_howto_type
*howto
;
5719 struct xcoff_link_hash_entry
*h
;
5723 struct internal_reloc
*irel
;
5724 struct xcoff_link_hash_entry
**rel_hash_ptr
;
5725 struct internal_ldrel ldrel
;
5727 if (link_order
->type
== bfd_section_reloc_link_order
)
5729 /* We need to somehow locate a symbol in the right section. The
5730 symbol must either have a value of zero, or we must adjust
5731 the addend by the value of the symbol. FIXME: Write this
5732 when we need it. The old linker couldn't handle this anyhow. */
5736 howto
= bfd_reloc_type_lookup (output_bfd
, link_order
->u
.reloc
.p
->reloc
);
5739 bfd_set_error (bfd_error_bad_value
);
5743 h
= ((struct xcoff_link_hash_entry
*)
5744 bfd_wrapped_link_hash_lookup (output_bfd
, finfo
->info
,
5745 link_order
->u
.reloc
.p
->u
.name
,
5746 false, false, true));
5749 if (! ((*finfo
->info
->callbacks
->unattached_reloc
)
5750 (finfo
->info
, link_order
->u
.reloc
.p
->u
.name
, (bfd
*) NULL
,
5751 (asection
*) NULL
, (bfd_vma
) 0)))
5756 if (h
->root
.type
== bfd_link_hash_common
)
5758 hsec
= h
->root
.u
.c
.p
->section
;
5761 else if (h
->root
.type
== bfd_link_hash_defined
5762 || h
->root
.type
== bfd_link_hash_defweak
)
5764 hsec
= h
->root
.u
.def
.section
;
5765 hval
= h
->root
.u
.def
.value
;
5773 addend
= link_order
->u
.reloc
.p
->addend
;
5775 addend
+= (hsec
->output_section
->vma
5776 + hsec
->output_offset
5783 bfd_reloc_status_type rstat
;
5786 size
= bfd_get_reloc_size (howto
);
5787 buf
= (bfd_byte
*) bfd_zmalloc (size
);
5791 rstat
= _bfd_relocate_contents (howto
, output_bfd
, addend
, buf
);
5797 case bfd_reloc_outofrange
:
5799 case bfd_reloc_overflow
:
5800 if (! ((*finfo
->info
->callbacks
->reloc_overflow
)
5801 (finfo
->info
, link_order
->u
.reloc
.p
->u
.name
,
5802 howto
->name
, addend
, (bfd
*) NULL
, (asection
*) NULL
,
5810 ok
= bfd_set_section_contents (output_bfd
, output_section
, (PTR
) buf
,
5811 (file_ptr
) link_order
->offset
, size
);
5817 /* Store the reloc information in the right place. It will get
5818 swapped and written out at the end of the final_link routine. */
5820 irel
= (finfo
->section_info
[output_section
->target_index
].relocs
5821 + output_section
->reloc_count
);
5822 rel_hash_ptr
= (finfo
->section_info
[output_section
->target_index
].rel_hashes
5823 + output_section
->reloc_count
);
5825 memset (irel
, 0, sizeof (struct internal_reloc
));
5826 *rel_hash_ptr
= NULL
;
5828 irel
->r_vaddr
= output_section
->vma
+ link_order
->offset
;
5831 irel
->r_symndx
= h
->indx
;
5834 /* Set the index to -2 to force this symbol to get written out. */
5840 irel
->r_type
= howto
->type
;
5841 irel
->r_size
= howto
->bitsize
- 1;
5842 if (howto
->complain_on_overflow
== complain_overflow_signed
)
5843 irel
->r_size
|= 0x80;
5845 ++output_section
->reloc_count
;
5847 /* Now output the reloc to the .loader section. */
5849 ldrel
.l_vaddr
= irel
->r_vaddr
;
5853 const char *secname
;
5855 secname
= hsec
->output_section
->name
;
5857 if (strcmp (secname
, ".text") == 0)
5859 else if (strcmp (secname
, ".data") == 0)
5861 else if (strcmp (secname
, ".bss") == 0)
5865 (*_bfd_error_handler
)
5866 ("%s: loader reloc in unrecognized section `%s'",
5867 bfd_get_filename (output_bfd
), secname
);
5868 bfd_set_error (bfd_error_nonrepresentable_section
);
5876 (*_bfd_error_handler
)
5877 ("%s: `%s' in loader reloc but not loader sym",
5878 bfd_get_filename (output_bfd
),
5879 h
->root
.root
.string
);
5880 bfd_set_error (bfd_error_bad_value
);
5883 ldrel
.l_symndx
= h
->ldindx
;
5886 ldrel
.l_rtype
= (irel
->r_size
<< 8) | irel
->r_type
;
5887 ldrel
.l_rsecnm
= output_section
->target_index
;
5888 xcoff_swap_ldrel_out (output_bfd
, &ldrel
, finfo
->ldrel
);
5894 /* Sort relocs by VMA. This is called via qsort. */
5897 xcoff_sort_relocs (p1
, p2
)
5901 const struct internal_reloc
*r1
= (const struct internal_reloc
*) p1
;
5902 const struct internal_reloc
*r2
= (const struct internal_reloc
*) p2
;
5904 if (r1
->r_vaddr
> r2
->r_vaddr
)
5906 else if (r1
->r_vaddr
< r2
->r_vaddr
)
5912 /* This is the relocation function for the RS/6000/POWER/PowerPC.
5913 This is currently the only processor which uses XCOFF; I hope that
5914 will never change. */
5917 _bfd_ppc_xcoff_relocate_section (output_bfd
, info
, input_bfd
,
5918 input_section
, contents
, relocs
, syms
,
5921 struct bfd_link_info
*info
;
5923 asection
*input_section
;
5925 struct internal_reloc
*relocs
;
5926 struct internal_syment
*syms
;
5927 asection
**sections
;
5929 struct internal_reloc
*rel
;
5930 struct internal_reloc
*relend
;
5933 relend
= rel
+ input_section
->reloc_count
;
5934 for (; rel
< relend
; rel
++)
5937 struct xcoff_link_hash_entry
*h
;
5938 struct internal_syment
*sym
;
5941 struct reloc_howto_struct howto
;
5942 bfd_reloc_status_type rstat
;
5944 /* Relocation type R_REF is a special relocation type which is
5945 merely used to prevent garbage collection from occurring for
5946 the csect including the symbol which it references. */
5947 if (rel
->r_type
== R_REF
)
5950 symndx
= rel
->r_symndx
;
5960 h
= obj_xcoff_sym_hashes (input_bfd
)[symndx
];
5961 sym
= syms
+ symndx
;
5962 addend
= - sym
->n_value
;
5965 /* We build the howto information on the fly. */
5967 howto
.type
= rel
->r_type
;
5968 howto
.rightshift
= 0;
5970 howto
.bitsize
= (rel
->r_size
& 0x1f) + 1;
5971 howto
.pc_relative
= false;
5973 if ((rel
->r_size
& 0x80) != 0)
5974 howto
.complain_on_overflow
= complain_overflow_signed
;
5976 howto
.complain_on_overflow
= complain_overflow_bitfield
;
5977 howto
.special_function
= NULL
;
5978 howto
.name
= "internal";
5979 howto
.partial_inplace
= true;
5980 if (howto
.bitsize
== 32)
5981 howto
.src_mask
= howto
.dst_mask
= 0xffffffff;
5984 howto
.src_mask
= howto
.dst_mask
= (1 << howto
.bitsize
) - 1;
5985 if (howto
.bitsize
== 16)
5988 howto
.pcrel_offset
= false;
5998 sec
= bfd_abs_section_ptr
;
6003 sec
= sections
[symndx
];
6004 /* Hack to make sure we use the right TOC anchor value
6005 if this reloc is against the TOC anchor. */
6006 if (sec
->name
[3] == '0'
6007 && strcmp (sec
->name
, ".tc0") == 0)
6008 val
= xcoff_data (output_bfd
)->toc
;
6010 val
= (sec
->output_section
->vma
6011 + sec
->output_offset
6018 if (h
->root
.type
== bfd_link_hash_defined
6019 || h
->root
.type
== bfd_link_hash_defweak
)
6023 sec
= h
->root
.u
.def
.section
;
6024 val
= (h
->root
.u
.def
.value
6025 + sec
->output_section
->vma
6026 + sec
->output_offset
);
6028 else if (h
->root
.type
== bfd_link_hash_common
)
6032 sec
= h
->root
.u
.c
.p
->section
;
6033 val
= (sec
->output_section
->vma
6034 + sec
->output_offset
);
6036 else if ((h
->flags
& XCOFF_DEF_DYNAMIC
) != 0
6037 || (h
->flags
& XCOFF_IMPORT
) != 0)
6039 /* Every symbol in a shared object is defined somewhere. */
6042 else if (! info
->relocateable
6045 if (! ((*info
->callbacks
->undefined_symbol
)
6046 (info
, h
->root
.root
.string
, input_bfd
, input_section
,
6047 rel
->r_vaddr
- input_section
->vma
)))
6052 /* I took the relocation type definitions from two documents:
6053 the PowerPC AIX Version 4 Application Binary Interface, First
6054 Edition (April 1992), and the PowerOpen ABI, Big-Endian
6055 32-Bit Hardware Implementation (June 30, 1994). Differences
6056 between the documents are noted below. */
6058 switch (rel
->r_type
)
6063 /* These relocs are defined by the PowerPC ABI to be
6064 relative branches which use half of the difference
6065 between the symbol and the program counter. I can't
6066 quite figure out when this is useful. These relocs are
6067 not defined by the PowerOpen ABI. */
6069 (*_bfd_error_handler
)
6070 ("%s: unsupported relocation type 0x%02x",
6071 bfd_get_filename (input_bfd
), (unsigned int) rel
->r_type
);
6072 bfd_set_error (bfd_error_bad_value
);
6075 /* Simple positive relocation. */
6078 /* Simple negative relocation. */
6082 /* Simple PC relative relocation. */
6083 howto
.pc_relative
= true;
6086 /* TOC relative relocation. The value in the instruction in
6087 the input file is the offset from the input file TOC to
6088 the desired location. We want the offset from the final
6089 TOC to the desired location. We have:
6094 so we must change insn by on - in.
6097 /* Global linkage relocation. The value of this relocation
6098 is the address of the entry in the TOC section. */
6100 /* Local object TOC address. I can't figure out the
6101 difference between this and case R_GL. */
6103 /* TOC relative relocation. A TOC relative load instruction
6104 which may be changed to a load address instruction.
6105 FIXME: We don't currently implement this optimization. */
6107 /* TOC relative relocation. This is a TOC relative load
6108 address instruction which may be changed to a load
6109 instruction. FIXME: I don't know if this is the correct
6111 if (h
!= NULL
&& h
->toc_section
== NULL
)
6113 (*_bfd_error_handler
)
6114 ("%s: TOC reloc at 0x%x to symbol `%s' with no TOC entry",
6115 bfd_get_filename (input_bfd
), rel
->r_vaddr
,
6116 h
->root
.root
.string
);
6117 bfd_set_error (bfd_error_bad_value
);
6122 BFD_ASSERT ((h
->flags
& XCOFF_SET_TOC
) == 0);
6123 val
= (h
->toc_section
->output_section
->vma
6124 + h
->toc_section
->output_offset
);
6126 val
= ((val
- xcoff_data (output_bfd
)->toc
)
6127 - (sym
->n_value
- xcoff_data (input_bfd
)->toc
));
6131 /* Absolute branch. We don't want to mess with the lower
6132 two bits of the instruction. */
6134 /* The PowerPC ABI defines this as an absolute call which
6135 may be modified to become a relative call. The PowerOpen
6136 ABI does not define this relocation type. */
6138 /* Absolute branch which may be modified to become a
6141 /* The PowerPC ABI defines this as an absolute branch to a
6142 fixed address which may be modified to an absolute branch
6143 to a symbol. The PowerOpen ABI does not define this
6146 /* The PowerPC ABI defines this as an absolute branch to a
6147 fixed address which may be modified to a relative branch.
6148 The PowerOpen ABI does not define this relocation type. */
6149 howto
.src_mask
&= ~3;
6150 howto
.dst_mask
= howto
.src_mask
;
6153 /* Relative branch. We don't want to mess with the lower
6154 two bits of the instruction. */
6156 /* The PowerPC ABI defines this as a relative call which may
6157 be modified to become an absolute call. The PowerOpen
6158 ABI does not define this relocation type. */
6160 /* A relative branch which may be modified to become an
6161 absolute branch. FIXME: We don't implement this,
6162 although we should for symbols of storage mapping class
6164 howto
.pc_relative
= true;
6165 howto
.src_mask
&= ~3;
6166 howto
.dst_mask
= howto
.src_mask
;
6169 /* The PowerPC AIX ABI describes this as a load which may be
6170 changed to a load address. The PowerOpen ABI says this
6171 is the same as case R_POS. */
6174 /* The PowerPC AIX ABI describes this as a load address
6175 which may be changed to a load. The PowerOpen ABI says
6176 this is the same as R_POS. */
6180 /* If we see an R_BR or R_RBR reloc which is jumping to global
6181 linkage code, and it is followed by an appropriate cror nop
6182 instruction, we replace the cror with lwz r2,20(r1). This
6183 restores the TOC after the glink code. Contrariwise, if the
6184 call is followed by a lwz r2,20(r1), but the call is not
6185 going to global linkage code, we can replace the load with a
6187 if ((rel
->r_type
== R_BR
|| rel
->r_type
== R_RBR
)
6189 && h
->root
.type
== bfd_link_hash_defined
6190 && (rel
->r_vaddr
- input_section
->vma
+ 8
6191 <= input_section
->_cooked_size
))
6196 pnext
= contents
+ (rel
->r_vaddr
- input_section
->vma
) + 4;
6197 next
= bfd_get_32 (input_bfd
, pnext
);
6198 if (h
->smclas
== XMC_GL
)
6200 if (next
== 0x4def7b82 /* cror 15,15,15 */
6201 || next
== 0x4ffffb82) /* cror 31,31,31 */
6202 bfd_put_32 (input_bfd
, 0x80410014, pnext
); /* lwz r1,20(r1) */
6206 if (next
== 0x80410014) /* lwz r1,20(r1) */
6207 bfd_put_32 (input_bfd
, 0x4ffffb82, pnext
); /* cror 31,31,31 */
6211 /* A PC relative reloc includes the section address. */
6212 if (howto
.pc_relative
)
6213 addend
+= input_section
->vma
;
6215 rstat
= _bfd_final_link_relocate (&howto
, input_bfd
, input_section
,
6217 rel
->r_vaddr
- input_section
->vma
,
6226 case bfd_reloc_overflow
:
6229 char buf
[SYMNMLEN
+ 1];
6230 char howto_name
[10];
6235 name
= h
->root
.root
.string
;
6238 name
= _bfd_coff_internal_syment_name (input_bfd
, sym
, buf
);
6242 sprintf (howto_name
, "0x%02x", rel
->r_type
);
6244 if (! ((*info
->callbacks
->reloc_overflow
)
6245 (info
, name
, howto_name
, (bfd_vma
) 0, input_bfd
,
6246 input_section
, rel
->r_vaddr
- input_section
->vma
)))