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[deliverable/binutils-gdb.git] / bfd / xcofflink.c
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252b5132 1/* POWER/PowerPC XCOFF linker support.
1049f94e 2 Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
7898deda 3 Free Software Foundation, Inc.
252b5132
RH		 4 Written by Ian Lance Taylor <ian@cygnus.com>, Cygnus Support.
5
eb1e0e80 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
eb1e0e80
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
252b5132 12
eb1e0e80
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
eb1e0e80
NC		 18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
252b5132
RH		 21
22#include "bfd.h"
23#include "sysdep.h"
24#include "bfdlink.h"
25#include "libbfd.h"
26#include "coff/internal.h"
beb1bf64 27#include "coff/xcoff.h"
252b5132 28#include "libcoff.h"
beb1bf64 29#include "libxcoff.h"
252b5132
RH		 30
31/* This file holds the XCOFF linker code. */
32
33#define STRING_SIZE_SIZE (4)
34
252b5132
RH		 35/* We reuse the SEC_ROM flag as a mark flag for garbage collection.
36 This flag will only be used on input sections. */
37
38#define SEC_MARK (SEC_ROM)
39
252b5132
RH		 40/* The list of import files. */
41
dc810e39
AM		 42struct xcoff_import_file
43{
252b5132
RH		 44 /* The next entry in the list. */
45 struct xcoff_import_file *next;
46 /* The path. */
47 const char *path;
48 /* The file name. */
49 const char *file;
50 /* The member name. */
51 const char *member;
52};
53
252b5132
RH		 54/* Information we keep for each section in the output file during the
55 final link phase. */
56
dc810e39
AM		 57struct xcoff_link_section_info
58{
252b5132
RH		 59 /* The relocs to be output. */
60 struct internal_reloc *relocs;
61 /* For each reloc against a global symbol whose index was not known
62 when the reloc was handled, the global hash table entry. */
63 struct xcoff_link_hash_entry **rel_hashes;
64 /* If there is a TOC relative reloc against a global symbol, and the
65 index of the TOC symbol is not known when the reloc was handled,
66 an entry is added to this linked list. This is not an array,
67 like rel_hashes, because this case is quite uncommon. */
fbc4fff4
KH		 68 struct xcoff_toc_rel_hash {
69 struct xcoff_toc_rel_hash *next;
70 struct xcoff_link_hash_entry *h;
71 struct internal_reloc *rel;
72 } *toc_rel_hashes;
252b5132
RH		 73};
74
75/* Information that we pass around while doing the final link step. */
76
dc810e39
AM		 77struct xcoff_final_link_info
78{
252b5132
RH		 79 /* General link information. */
80 struct bfd_link_info *info;
81 /* Output BFD. */
82 bfd *output_bfd;
83 /* Hash table for long symbol names. */
84 struct bfd_strtab_hash *strtab;
85 /* Array of information kept for each output section, indexed by the
86 target_index field. */
87 struct xcoff_link_section_info *section_info;
88 /* Symbol index of last C_FILE symbol (-1 if none). */
89 long last_file_index;
90 /* Contents of last C_FILE symbol. */
91 struct internal_syment last_file;
92 /* Symbol index of TOC symbol. */
93 long toc_symindx;
94 /* Start of .loader symbols. */
beb1bf64 95 bfd_byte *ldsym;
252b5132 96 /* Next .loader reloc to swap out. */
beb1bf64 97 bfd_byte *ldrel;
252b5132
RH		 98 /* File position of start of line numbers. */
99 file_ptr line_filepos;
100 /* Buffer large enough to hold swapped symbols of any input file. */
101 struct internal_syment *internal_syms;
102 /* Buffer large enough to hold output indices of symbols of any
103 input file. */
104 long *sym_indices;
105 /* Buffer large enough to hold output symbols for any input file. */
106 bfd_byte *outsyms;
107 /* Buffer large enough to hold external line numbers for any input
108 section. */
109 bfd_byte *linenos;
110 /* Buffer large enough to hold any input section. */
111 bfd_byte *contents;
112 /* Buffer large enough to hold external relocs of any input section. */
113 bfd_byte *external_relocs;
114};
115
252b5132
RH		 116static struct bfd_hash_entry *xcoff_link_hash_newfunc
117 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
b34976b6 118static bfd_boolean xcoff_get_section_contents PARAMS ((bfd *, asection *));
252b5132 119static struct internal_reloc *xcoff_read_internal_relocs
b34976b6 120 PARAMS ((bfd *, asection *, bfd_boolean, bfd_byte *, bfd_boolean,
252b5132 121 struct internal_reloc *));
b34976b6 122static bfd_boolean xcoff_link_add_object_symbols
252b5132 123 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6
AM		 124static bfd_boolean xcoff_link_check_archive_element
125 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
126static bfd_boolean xcoff_link_check_ar_symbols
127 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
128static bfd_boolean xcoff_link_check_dynamic_ar_symbols
129 PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *));
252b5132
RH		 130static bfd_size_type xcoff_find_reloc
131 PARAMS ((struct internal_reloc *, bfd_size_type, bfd_vma));
b34976b6 132static bfd_boolean xcoff_link_add_symbols
252b5132 133 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6
AM		 134static bfd_boolean xcoff_link_add_dynamic_symbols
135 PARAMS ((bfd *, struct bfd_link_info *));
136static bfd_boolean xcoff_mark_symbol
252b5132 137 PARAMS ((struct bfd_link_info *, struct xcoff_link_hash_entry *));
b34976b6 138static bfd_boolean xcoff_mark PARAMS ((struct bfd_link_info *, asection *));
252b5132 139static void xcoff_sweep PARAMS ((struct bfd_link_info *));
b34976b6 140static bfd_boolean xcoff_build_ldsyms
252b5132 141 PARAMS ((struct xcoff_link_hash_entry *, PTR));
b34976b6 142static bfd_boolean xcoff_link_input_bfd
252b5132 143 PARAMS ((struct xcoff_final_link_info *, bfd *));
b34976b6 144static bfd_boolean xcoff_write_global_symbol
252b5132 145 PARAMS ((struct xcoff_link_hash_entry *, PTR));
b34976b6 146static bfd_boolean xcoff_reloc_link_order
252b5132
RH		 147 PARAMS ((bfd *, struct xcoff_final_link_info *, asection *,
148 struct bfd_link_order *));
149static int xcoff_sort_relocs PARAMS ((const PTR, const PTR));
150\f
252b5132 151
252b5132
RH		 152/* Routines to read XCOFF dynamic information. This don't really
153 belong here, but we already have the ldsym manipulation routines
154 here. */
155
156/* Read the contents of a section. */
157
b34976b6 158static bfd_boolean
252b5132
RH		 159xcoff_get_section_contents (abfd, sec)
160 bfd *abfd;
161 asection *sec;
162{
beb1bf64 163
252b5132
RH		 164 if (coff_section_data (abfd, sec) == NULL)
165 {
dc810e39
AM		 166 bfd_size_type amt = sizeof (struct coff_section_tdata);
167 sec->used_by_bfd = bfd_zalloc (abfd, amt);
252b5132 168 if (sec->used_by_bfd == NULL)
b34976b6 169 return FALSE;
252b5132
RH		 170 }
171
172 if (coff_section_data (abfd, sec)->contents == NULL)
173 {
dc810e39
AM		 174 coff_section_data (abfd, sec)->contents = ((bfd_byte *)
175 bfd_malloc (sec->_raw_size));
252b5132 176 if (coff_section_data (abfd, sec)->contents == NULL)
b34976b6 177 return FALSE;
252b5132
RH		 178
179 if (! bfd_get_section_contents (abfd, sec,
180 coff_section_data (abfd, sec)->contents,
181 (file_ptr) 0, sec->_raw_size))
b34976b6 182 return FALSE;
252b5132
RH		 183 }
184
b34976b6 185 return TRUE;
252b5132
RH		 186}
187
188/* Get the size required to hold the dynamic symbols. */
189
190long
191_bfd_xcoff_get_dynamic_symtab_upper_bound (abfd)
192 bfd *abfd;
193{
194 asection *lsec;
195 bfd_byte *contents;
196 struct internal_ldhdr ldhdr;
197
198 if ((abfd->flags & DYNAMIC) == 0)
199 {
200 bfd_set_error (bfd_error_invalid_operation);
201 return -1;
202 }
203
204 lsec = bfd_get_section_by_name (abfd, ".loader");
205 if (lsec == NULL)
206 {
207 bfd_set_error (bfd_error_no_symbols);
208 return -1;
209 }
210
211 if (! xcoff_get_section_contents (abfd, lsec))
212 return -1;
213 contents = coff_section_data (abfd, lsec)->contents;
214
beb1bf64 215 bfd_xcoff_swap_ldhdr_in (abfd, (PTR) contents, &ldhdr);
252b5132
RH		 216
217 return (ldhdr.l_nsyms + 1) * sizeof (asymbol *);
218}
219
220/* Get the dynamic symbols. */
221
222long
223_bfd_xcoff_canonicalize_dynamic_symtab (abfd, psyms)
224 bfd *abfd;
225 asymbol **psyms;
226{
227 asection *lsec;
228 bfd_byte *contents;
229 struct internal_ldhdr ldhdr;
230 const char *strings;
beb1bf64 231 bfd_byte *elsym, *elsymend;
252b5132
RH		 232 coff_symbol_type *symbuf;
233
234 if ((abfd->flags & DYNAMIC) == 0)
235 {
236 bfd_set_error (bfd_error_invalid_operation);
237 return -1;
238 }
239
240 lsec = bfd_get_section_by_name (abfd, ".loader");
241 if (lsec == NULL)
242 {
243 bfd_set_error (bfd_error_no_symbols);
244 return -1;
245 }
246
247 if (! xcoff_get_section_contents (abfd, lsec))
248 return -1;
249 contents = coff_section_data (abfd, lsec)->contents;
250
b34976b6 251 coff_section_data (abfd, lsec)->keep_contents = TRUE;
252b5132 252
beb1bf64 253 bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
252b5132
RH		 254
255 strings = (char *) contents + ldhdr.l_stoff;
256
257 symbuf = ((coff_symbol_type *)
258 bfd_zalloc (abfd, ldhdr.l_nsyms * sizeof (coff_symbol_type)));
259 if (symbuf == NULL)
260 return -1;
261
beb1bf64
TR		 262 elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr);
263
264 elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd);
265 for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd), symbuf++, psyms++)
252b5132
RH		 266 {
267 struct internal_ldsym ldsym;
268
beb1bf64 269 bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
252b5132
RH		 270
271 symbuf->symbol.the_bfd = abfd;
272
273 if (ldsym._l._l_l._l_zeroes == 0)
274 symbuf->symbol.name = strings + ldsym._l._l_l._l_offset;
275 else
276 {
beb1bf64
TR		 277 char *c;
278
dc810e39 279 c = bfd_alloc (abfd, (bfd_size_type) SYMNMLEN + 1);
beb1bf64
TR		 280 if (c == NULL)
281 return -1;
282 memcpy (c, ldsym._l._l_name, SYMNMLEN);
283 c[SYMNMLEN] = '\0';
284 symbuf->symbol.name = c;
252b5132
RH		 285 }
286
287 if (ldsym.l_smclas == XMC_XO)
288 symbuf->symbol.section = bfd_abs_section_ptr;
289 else
290 symbuf->symbol.section = coff_section_from_bfd_index (abfd,
291 ldsym.l_scnum);
292 symbuf->symbol.value = ldsym.l_value - symbuf->symbol.section->vma;
293
294 symbuf->symbol.flags = BSF_NO_FLAGS;
295 if ((ldsym.l_smtype & L_EXPORT) != 0)
296 symbuf->symbol.flags |= BSF_GLOBAL;
297
298 /* FIXME: We have no way to record the other information stored
b34976b6 299 with the loader symbol. */
252b5132
RH		 300
301 *psyms = (asymbol *) symbuf;
302 }
303
304 *psyms = NULL;
305
306 return ldhdr.l_nsyms;
307}
308
309/* Get the size required to hold the dynamic relocs. */
310
311long
312_bfd_xcoff_get_dynamic_reloc_upper_bound (abfd)
313 bfd *abfd;
314{
315 asection *lsec;
316 bfd_byte *contents;
317 struct internal_ldhdr ldhdr;
318
319 if ((abfd->flags & DYNAMIC) == 0)
320 {
321 bfd_set_error (bfd_error_invalid_operation);
322 return -1;
323 }
324
325 lsec = bfd_get_section_by_name (abfd, ".loader");
326 if (lsec == NULL)
327 {
328 bfd_set_error (bfd_error_no_symbols);
329 return -1;
330 }
331
332 if (! xcoff_get_section_contents (abfd, lsec))
333 return -1;
334 contents = coff_section_data (abfd, lsec)->contents;
335
beb1bf64 336 bfd_xcoff_swap_ldhdr_in (abfd, (struct external_ldhdr *) contents, &ldhdr);
252b5132
RH		 337
338 return (ldhdr.l_nreloc + 1) * sizeof (arelent *);
339}
340
252b5132
RH		 341/* Get the dynamic relocs. */
342
343long
344_bfd_xcoff_canonicalize_dynamic_reloc (abfd, prelocs, syms)
345 bfd *abfd;
346 arelent **prelocs;
347 asymbol **syms;
348{
349 asection *lsec;
350 bfd_byte *contents;
351 struct internal_ldhdr ldhdr;
352 arelent *relbuf;
beb1bf64 353 bfd_byte *elrel, *elrelend;
252b5132
RH		 354
355 if ((abfd->flags & DYNAMIC) == 0)
356 {
357 bfd_set_error (bfd_error_invalid_operation);
358 return -1;
359 }
360
361 lsec = bfd_get_section_by_name (abfd, ".loader");
362 if (lsec == NULL)
363 {
364 bfd_set_error (bfd_error_no_symbols);
365 return -1;
366 }
367
368 if (! xcoff_get_section_contents (abfd, lsec))
369 return -1;
370 contents = coff_section_data (abfd, lsec)->contents;
371
beb1bf64 372 bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
252b5132
RH		 373
374 relbuf = (arelent *) bfd_alloc (abfd, ldhdr.l_nreloc * sizeof (arelent));
375 if (relbuf == NULL)
376 return -1;
377
beb1bf64
TR		 378 elrel = contents + bfd_xcoff_loader_reloc_offset(abfd, &ldhdr);
379
380 elrelend = elrel + ldhdr.l_nreloc * bfd_xcoff_ldrelsz(abfd);
dc810e39
AM		 381 for (; elrel < elrelend; elrel += bfd_xcoff_ldrelsz(abfd), relbuf++,
382 prelocs++)
252b5132
RH		 383 {
384 struct internal_ldrel ldrel;
385
beb1bf64 386 bfd_xcoff_swap_ldrel_in (abfd, elrel, &ldrel);
252b5132
RH		 387
388 if (ldrel.l_symndx >= 3)
389 relbuf->sym_ptr_ptr = syms + (ldrel.l_symndx - 3);
390 else
391 {
392 const char *name;
393 asection *sec;
394
395 switch (ldrel.l_symndx)
396 {
397 case 0:
398 name = ".text";
399 break;
400 case 1:
401 name = ".data";
402 break;
403 case 2:
404 name = ".bss";
405 break;
406 default:
407 abort ();
408 break;
409 }
410
411 sec = bfd_get_section_by_name (abfd, name);
412 if (sec == NULL)
413 {
414 bfd_set_error (bfd_error_bad_value);
415 return -1;
416 }
417
418 relbuf->sym_ptr_ptr = sec->symbol_ptr_ptr;
419 }
420
421 relbuf->address = ldrel.l_vaddr;
422 relbuf->addend = 0;
423
424 /* Most dynamic relocs have the same type. FIXME: This is only
b34976b6
AM		 425 correct if ldrel.l_rtype == 0. In other cases, we should use
426 a different howto. */
beb1bf64 427 relbuf->howto = bfd_xcoff_dynamic_reloc_howto(abfd);
252b5132
RH		 428
429 /* FIXME: We have no way to record the l_rsecnm field. */
430
431 *prelocs = relbuf;
432 }
433
434 *prelocs = NULL;
435
436 return ldhdr.l_nreloc;
437}
438\f
439/* Routine to create an entry in an XCOFF link hash table. */
440
441static struct bfd_hash_entry *
442xcoff_link_hash_newfunc (entry, table, string)
443 struct bfd_hash_entry *entry;
444 struct bfd_hash_table *table;
445 const char *string;
446{
447 struct xcoff_link_hash_entry *ret = (struct xcoff_link_hash_entry *) entry;
448
449 /* Allocate the structure if it has not already been allocated by a
450 subclass. */
451 if (ret == (struct xcoff_link_hash_entry *) NULL)
452 ret = ((struct xcoff_link_hash_entry *)
453 bfd_hash_allocate (table, sizeof (struct xcoff_link_hash_entry)));
454 if (ret == (struct xcoff_link_hash_entry *) NULL)
455 return (struct bfd_hash_entry *) ret;
456
457 /* Call the allocation method of the superclass. */
458 ret = ((struct xcoff_link_hash_entry *)
459 _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
460 table, string));
461 if (ret != NULL)
462 {
463 /* Set local fields. */
464 ret->indx = -1;
465 ret->toc_section = NULL;
466 ret->u.toc_indx = -1;
467 ret->descriptor = NULL;
468 ret->ldsym = NULL;
469 ret->ldindx = -1;
470 ret->flags = 0;
471 ret->smclas = XMC_UA;
472 }
473
474 return (struct bfd_hash_entry *) ret;
475}
476
477/* Create a XCOFF link hash table. */
478
479struct bfd_link_hash_table *
480_bfd_xcoff_bfd_link_hash_table_create (abfd)
481 bfd *abfd;
482{
483 struct xcoff_link_hash_table *ret;
dc810e39 484 bfd_size_type amt = sizeof (struct xcoff_link_hash_table);
252b5132 485
e2d34d7d 486 ret = (struct xcoff_link_hash_table *) bfd_malloc (amt);
252b5132
RH		 487 if (ret == (struct xcoff_link_hash_table *) NULL)
488 return (struct bfd_link_hash_table *) NULL;
489 if (! _bfd_link_hash_table_init (&ret->root, abfd, xcoff_link_hash_newfunc))
490 {
e2d34d7d 491 free (ret);
252b5132
RH		 492 return (struct bfd_link_hash_table *) NULL;
493 }
494
495 ret->debug_strtab = _bfd_xcoff_stringtab_init ();
496 ret->debug_section = NULL;
497 ret->loader_section = NULL;
498 ret->ldrel_count = 0;
499 memset (&ret->ldhdr, 0, sizeof (struct internal_ldhdr));
500 ret->linkage_section = NULL;
501 ret->toc_section = NULL;
502 ret->descriptor_section = NULL;
503 ret->imports = NULL;
504 ret->file_align = 0;
b34976b6
AM		 505 ret->textro = FALSE;
506 ret->gc = FALSE;
252b5132
RH		 507 memset (ret->special_sections, 0, sizeof ret->special_sections);
508
509 /* The linker will always generate a full a.out header. We need to
510 record that fact now, before the sizeof_headers routine could be
511 called. */
b34976b6 512 xcoff_data (abfd)->full_aouthdr = TRUE;
252b5132
RH		 513
514 return &ret->root;
515}
516
e2d34d7d
DJ		 517/* Free a XCOFF link hash table. */
518
519void
520_bfd_xcoff_bfd_link_hash_table_free (hash)
521 struct bfd_link_hash_table *hash;
522{
523 struct xcoff_link_hash_table *ret = (struct xcoff_link_hash_table *) hash;
524
525 _bfd_stringtab_free (ret->debug_strtab);
526 bfd_hash_table_free (&ret->root.table);
527 free (ret);
528}
252b5132
RH		 529\f
530/* Read internal relocs for an XCOFF csect. This is a wrapper around
531 _bfd_coff_read_internal_relocs which tries to take advantage of any
532 relocs which may have been cached for the enclosing section. */
533
534static struct internal_reloc *
535xcoff_read_internal_relocs (abfd, sec, cache, external_relocs,
536 require_internal, internal_relocs)
537 bfd *abfd;
538 asection *sec;
b34976b6 539 bfd_boolean cache;
252b5132 540 bfd_byte *external_relocs;
b34976b6 541 bfd_boolean require_internal;
252b5132
RH		 542 struct internal_reloc *internal_relocs;
543{
beb1bf64 544
252b5132
RH		 545 if (coff_section_data (abfd, sec) != NULL
546 && coff_section_data (abfd, sec)->relocs == NULL
547 && xcoff_section_data (abfd, sec) != NULL)
548 {
549 asection *enclosing;
550
551 enclosing = xcoff_section_data (abfd, sec)->enclosing;
552
553 if (enclosing != NULL
554 && (coff_section_data (abfd, enclosing) == NULL
555 || coff_section_data (abfd, enclosing)->relocs == NULL)
556 && cache
557 && enclosing->reloc_count > 0)
558 {
b34976b6
AM		 559 if (_bfd_coff_read_internal_relocs (abfd, enclosing, TRUE,
560 external_relocs, FALSE,
252b5132
RH		 561 (struct internal_reloc *) NULL)
562 == NULL)
563 return NULL;
564 }
565
566 if (enclosing != NULL
567 && coff_section_data (abfd, enclosing) != NULL
568 && coff_section_data (abfd, enclosing)->relocs != NULL)
569 {
570 size_t off;
571
572 off = ((sec->rel_filepos - enclosing->rel_filepos)
573 / bfd_coff_relsz (abfd));
beb1bf64 574
252b5132
RH		 575 if (! require_internal)
576 return coff_section_data (abfd, enclosing)->relocs + off;
577 memcpy (internal_relocs,
578 coff_section_data (abfd, enclosing)->relocs + off,
579 sec->reloc_count * sizeof (struct internal_reloc));
580 return internal_relocs;
581 }
582 }
583
584 return _bfd_coff_read_internal_relocs (abfd, sec, cache, external_relocs,
585 require_internal, internal_relocs);
586}
587\f
588/* Given an XCOFF BFD, add symbols to the global hash table as
589 appropriate. */
590
b34976b6 591bfd_boolean
252b5132
RH		 592_bfd_xcoff_bfd_link_add_symbols (abfd, info)
593 bfd *abfd;
594 struct bfd_link_info *info;
595{
beb1bf64 596
252b5132
RH		 597 switch (bfd_get_format (abfd))
598 {
599 case bfd_object:
600 return xcoff_link_add_object_symbols (abfd, info);
601
602 case bfd_archive:
603 /* If the archive has a map, do the usual search. We then need
b34976b6
AM		 604 to check the archive for dynamic objects, because they may not
605 appear in the archive map even though they should, perhaps, be
606 included. If the archive has no map, we just consider each object
607 file in turn, since that apparently is what the AIX native linker
789c90aa 608 does. */
252b5132
RH		 609 if (bfd_has_map (abfd))
610 {
611 if (! (_bfd_generic_link_add_archive_symbols
612 (abfd, info, xcoff_link_check_archive_element)))
b34976b6 613 return FALSE;
252b5132
RH		 614 }
615
616 {
617 bfd *member;
b34976b6 618
252b5132
RH		 619 member = bfd_openr_next_archived_file (abfd, (bfd *) NULL);
620 while (member != NULL)
621 {
622 if (bfd_check_format (member, bfd_object)
789c90aa
TR		 623 && (info->hash->creator == member->xvec)
624 && (! bfd_has_map (abfd) || (member->flags & DYNAMIC) != 0))
252b5132 625 {
b34976b6
AM		 626 bfd_boolean needed;
627
628 if (! xcoff_link_check_archive_element (member, info,
789c90aa 629 &needed))
b34976b6 630 return FALSE;
252b5132
RH		 631 if (needed)
632 member->archive_pass = -1;
633 }
634 member = bfd_openr_next_archived_file (abfd, member);
635 }
636 }
637
b34976b6 638 return TRUE;
252b5132
RH		 639
640 default:
641 bfd_set_error (bfd_error_wrong_format);
b34976b6 642 return FALSE;
252b5132
RH		 643 }
644}
645
646/* Add symbols from an XCOFF object file. */
647
b34976b6 648static bfd_boolean
252b5132
RH		 649xcoff_link_add_object_symbols (abfd, info)
650 bfd *abfd;
651 struct bfd_link_info *info;
652{
beb1bf64 653
252b5132 654 if (! _bfd_coff_get_external_symbols (abfd))
b34976b6 655 return FALSE;
252b5132 656 if (! xcoff_link_add_symbols (abfd, info))
b34976b6 657 return FALSE;
252b5132
RH		 658 if (! info->keep_memory)
659 {
660 if (! _bfd_coff_free_symbols (abfd))
b34976b6 661 return FALSE;
252b5132 662 }
b34976b6 663 return TRUE;
252b5132
RH		 664}
665
666/* Check a single archive element to see if we need to include it in
667 the link. *PNEEDED is set according to whether this element is
668 needed in the link or not. This is called via
669 _bfd_generic_link_add_archive_symbols. */
670
b34976b6 671static bfd_boolean
252b5132
RH		 672xcoff_link_check_archive_element (abfd, info, pneeded)
673 bfd *abfd;
674 struct bfd_link_info *info;
b34976b6 675 bfd_boolean *pneeded;
252b5132 676{
beb1bf64 677
252b5132 678 if (! _bfd_coff_get_external_symbols (abfd))
b34976b6 679 return FALSE;
252b5132
RH		 680
681 if (! xcoff_link_check_ar_symbols (abfd, info, pneeded))
b34976b6 682 return FALSE;
252b5132
RH		 683
684 if (*pneeded)
685 {
686 if (! xcoff_link_add_symbols (abfd, info))
b34976b6 687 return FALSE;
252b5132
RH		 688 }
689
690 if (! info->keep_memory || ! *pneeded)
691 {
692 if (! _bfd_coff_free_symbols (abfd))
b34976b6 693 return FALSE;
252b5132
RH		 694 }
695
b34976b6 696 return TRUE;
252b5132
RH		 697}
698
699/* Look through the symbols to see if this object file should be
700 included in the link. */
701
b34976b6 702static bfd_boolean
252b5132
RH		 703xcoff_link_check_ar_symbols (abfd, info, pneeded)
704 bfd *abfd;
705 struct bfd_link_info *info;
b34976b6 706 bfd_boolean *pneeded;
252b5132
RH		 707{
708 bfd_size_type symesz;
709 bfd_byte *esym;
710 bfd_byte *esym_end;
711
b34976b6 712 *pneeded = FALSE;
252b5132
RH		 713
714 if ((abfd->flags & DYNAMIC) != 0
715 && ! info->static_link
716 && info->hash->creator == abfd->xvec)
717 return xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded);
718
719 symesz = bfd_coff_symesz (abfd);
720 esym = (bfd_byte *) obj_coff_external_syms (abfd);
721 esym_end = esym + obj_raw_syment_count (abfd) * symesz;
722 while (esym < esym_end)
723 {
724 struct internal_syment sym;
725
726 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
727
728 if (sym.n_sclass == C_EXT && sym.n_scnum != N_UNDEF)
729 {
730 const char *name;
731 char buf[SYMNMLEN + 1];
732 struct bfd_link_hash_entry *h;
733
734 /* This symbol is externally visible, and is defined by this
b34976b6 735 object file. */
252b5132
RH		 736
737 name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
beb1bf64 738
252b5132 739 if (name == NULL)
b34976b6
AM		 740 return FALSE;
741 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
252b5132
RH		 742
743 /* We are only interested in symbols that are currently
744 undefined. If a symbol is currently known to be common,
745 XCOFF linkers do not bring in an object file which
746 defines it. We also don't bring in symbols to satisfy
747 undefined references in shared objects. */
748 if (h != (struct bfd_link_hash_entry *) NULL
749 && h->type == bfd_link_hash_undefined
dc810e39 750 && (info->hash->creator != abfd->xvec
252b5132
RH		 751 || (((struct xcoff_link_hash_entry *) h)->flags
752 & XCOFF_DEF_DYNAMIC) == 0))
753 {
754 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
b34976b6
AM		 755 return FALSE;
756 *pneeded = TRUE;
757 return TRUE;
252b5132
RH		 758 }
759 }
760
761 esym += (sym.n_numaux + 1) * symesz;
762 }
763
764 /* We do not need this object file. */
b34976b6 765 return TRUE;
252b5132
RH		 766}
767
768/* Look through the loader symbols to see if this dynamic object
769 should be included in the link. The native linker uses the loader
770 symbols, not the normal symbol table, so we do too. */
771
b34976b6 772static bfd_boolean
252b5132
RH		 773xcoff_link_check_dynamic_ar_symbols (abfd, info, pneeded)
774 bfd *abfd;
775 struct bfd_link_info *info;
b34976b6 776 bfd_boolean *pneeded;
252b5132
RH		 777{
778 asection *lsec;
beb1bf64 779 bfd_byte *contents;
252b5132
RH		 780 struct internal_ldhdr ldhdr;
781 const char *strings;
beb1bf64 782 bfd_byte *elsym, *elsymend;
252b5132 783
b34976b6 784 *pneeded = FALSE;
252b5132
RH		 785
786 lsec = bfd_get_section_by_name (abfd, ".loader");
787 if (lsec == NULL)
788 {
789 /* There are no symbols, so don't try to include it. */
b34976b6 790 return TRUE;
252b5132
RH		 791 }
792
793 if (! xcoff_get_section_contents (abfd, lsec))
b34976b6 794 return FALSE;
beb1bf64
TR		 795 contents = coff_section_data (abfd, lsec)->contents;
796
797 bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
252b5132 798
beb1bf64 799 strings = (char *) contents + ldhdr.l_stoff;
252b5132 800
beb1bf64 801 elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr);
252b5132 802
beb1bf64
TR		 803 elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd);
804 for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd))
252b5132
RH		 805 {
806 struct internal_ldsym ldsym;
807 char nambuf[SYMNMLEN + 1];
808 const char *name;
809 struct bfd_link_hash_entry *h;
810
beb1bf64 811 bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
252b5132
RH		 812
813 /* We are only interested in exported symbols. */
814 if ((ldsym.l_smtype & L_EXPORT) == 0)
815 continue;
816
817 if (ldsym._l._l_l._l_zeroes == 0)
818 name = strings + ldsym._l._l_l._l_offset;
819 else
820 {
821 memcpy (nambuf, ldsym._l._l_name, SYMNMLEN);
822 nambuf[SYMNMLEN] = '\0';
823 name = nambuf;
824 }
825
b34976b6 826 h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE);
252b5132
RH		 827
828 /* We are only interested in symbols that are currently
b34976b6
AM		 829 undefined. At this point we know that we are using an XCOFF
830 hash table. */
252b5132
RH		 831 if (h != NULL
832 && h->type == bfd_link_hash_undefined
833 && (((struct xcoff_link_hash_entry *) h)->flags
834 & XCOFF_DEF_DYNAMIC) == 0)
835 {
836 if (! (*info->callbacks->add_archive_element) (info, abfd, name))
b34976b6
AM		 837 return FALSE;
838 *pneeded = TRUE;
839 return TRUE;
252b5132
RH		 840 }
841 }
842
843 /* We do not need this shared object. */
844
beb1bf64 845 if (contents != NULL && ! coff_section_data (abfd, lsec)->keep_contents)
252b5132
RH		 846 {
847 free (coff_section_data (abfd, lsec)->contents);
848 coff_section_data (abfd, lsec)->contents = NULL;
849 }
850
b34976b6 851 return TRUE;
252b5132
RH		 852}
853
854/* Returns the index of reloc in RELOCS with the least address greater
855 than or equal to ADDRESS. The relocs are sorted by address. */
856
857static bfd_size_type
858xcoff_find_reloc (relocs, count, address)
859 struct internal_reloc *relocs;
860 bfd_size_type count;
861 bfd_vma address;
862{
863 bfd_size_type min, max, this;
864
865 if (count < 2)
866 {
867 if (count == 1 && relocs[0].r_vaddr < address)
868 return 1;
869 else
870 return 0;
871 }
872
873 min = 0;
874 max = count;
875
876 /* Do a binary search over (min,max]. */
877 while (min + 1 < max)
878 {
879 bfd_vma raddr;
880
881 this = (max + min) / 2;
882 raddr = relocs[this].r_vaddr;
883 if (raddr > address)
884 max = this;
885 else if (raddr < address)
886 min = this;
887 else
888 {
889 min = this;
890 break;
891 }
892 }
893
894 if (relocs[min].r_vaddr < address)
895 return min + 1;
896
897 while (min > 0
898 && relocs[min - 1].r_vaddr == address)
899 --min;
900
901 return min;
902}
903
beb1bf64 904
dc810e39
AM		 905/* xcoff_link_create_extra_sections
906
907 Takes care of creating the .loader, .gl, .ds, .debug and sections. */
908
b34976b6 909static bfd_boolean
dc810e39
AM		 910xcoff_link_create_extra_sections(bfd * abfd, struct bfd_link_info *info)
911{
beb1bf64 912
b34976b6 913 bfd_boolean return_value = FALSE;
beb1bf64 914
dc810e39
AM		 915 if (info->hash->creator == abfd->xvec)
916 {
beb1bf64
TR		 917
918 /* We need to build a .loader section, so we do it here. This
919 won't work if we're producing an XCOFF output file with no
920 XCOFF input files. FIXME. */
921
dc810e39
AM		 922 if (xcoff_hash_table (info)->loader_section == NULL)
923 {
924 asection *lsec;
925
926 lsec = bfd_make_section_anyway (abfd, ".loader");
927 if (lsec == NULL)
928 {
929 goto end_return;
930 }
931 xcoff_hash_table (info)->loader_section = lsec;
932 lsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
beb1bf64 933 }
beb1bf64
TR		 934
935 /* Likewise for the linkage section. */
dc810e39
AM		 936 if (xcoff_hash_table (info)->linkage_section == NULL)
937 {
938 asection *lsec;
beb1bf64 939
dc810e39
AM		 940 lsec = bfd_make_section_anyway (abfd, ".gl");
941 if (lsec == NULL)
942 {
943 goto end_return;
944 }
beb1bf64 945
dc810e39
AM		 946 xcoff_hash_table (info)->linkage_section = lsec;
947 lsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
948 | SEC_IN_MEMORY);
949 lsec->alignment_power = 2;
950 }
beb1bf64
TR		 951
952 /* Likewise for the TOC section. */
dc810e39
AM		 953 if (xcoff_hash_table (info)->toc_section == NULL)
954 {
955 asection *tsec;
beb1bf64 956
dc810e39
AM		 957 tsec = bfd_make_section_anyway (abfd, ".tc");
958 if (tsec == NULL)
959 {
960 goto end_return;
961 }
beb1bf64 962
dc810e39
AM		 963 xcoff_hash_table (info)->toc_section = tsec;
964 tsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
965 | SEC_IN_MEMORY);
966 tsec->alignment_power = 2;
beb1bf64
TR		 967 }
968
dc810e39
AM		 969 /* Likewise for the descriptor section. */
970 if (xcoff_hash_table (info)->descriptor_section == NULL)
971 {
972 asection *dsec;
973
974 dsec = bfd_make_section_anyway (abfd, ".ds");
975 if (dsec == NULL)
976 {
977 goto end_return;
978 }
979
980 xcoff_hash_table (info)->descriptor_section = dsec;
981 dsec->flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
982 | SEC_IN_MEMORY);
983 dsec->alignment_power = 2;
984 }
beb1bf64
TR		 985
986 /* Likewise for the .debug section. */
987 if (xcoff_hash_table (info)->debug_section == NULL
dc810e39
AM		 988 && info->strip != strip_all)
989 {
990 asection *dsec;
beb1bf64 991
dc810e39
AM		 992 dsec = bfd_make_section_anyway (abfd, ".debug");
993 if (dsec == NULL)
994 {
995 goto end_return;
996 }
997 xcoff_hash_table (info)->debug_section = dsec;
998 dsec->flags |= SEC_HAS_CONTENTS | SEC_IN_MEMORY;
beb1bf64 999 }
dc810e39
AM		 1000 }
1001
b34976b6 1002 return_value = TRUE;
beb1bf64
TR		 1003
1004 end_return:
1005
1006 return return_value;
1007}
1008
252b5132
RH		 1009/* Add all the symbols from an object file to the hash table.
1010
1011 XCOFF is a weird format. A normal XCOFF .o files will have three
1012 COFF sections--.text, .data, and .bss--but each COFF section will
1013 contain many csects. These csects are described in the symbol
1014 table. From the linker's point of view, each csect must be
1015 considered a section in its own right. For example, a TOC entry is
1016 handled as a small XMC_TC csect. The linker must be able to merge
1017 different TOC entries together, which means that it must be able to
1018 extract the XMC_TC csects from the .data section of the input .o
1019 file.
1020
1021 From the point of view of our linker, this is, of course, a hideous
1022 nightmare. We cope by actually creating sections for each csect,
1023 and discarding the original sections. We then have to handle the
1024 relocation entries carefully, since the only way to tell which
1025 csect they belong to is to examine the address. */
1026
b34976b6 1027static bfd_boolean
252b5132
RH		 1028xcoff_link_add_symbols (abfd, info)
1029 bfd *abfd;
1030 struct bfd_link_info *info;
1031{
1032 unsigned int n_tmask;
1033 unsigned int n_btshft;
b34976b6 1034 bfd_boolean default_copy;
252b5132
RH		 1035 bfd_size_type symcount;
1036 struct xcoff_link_hash_entry **sym_hash;
1037 asection **csect_cache;
1038 bfd_size_type linesz;
1039 asection *o;
1040 asection *last_real;
b34976b6 1041 bfd_boolean keep_syms;
252b5132
RH		 1042 asection *csect;
1043 unsigned int csect_index;
1044 asection *first_csect;
1045 bfd_size_type symesz;
1046 bfd_byte *esym;
1047 bfd_byte *esym_end;
dc810e39 1048 struct reloc_info_struct
beb1bf64
TR		 1049 {
1050 struct internal_reloc *relocs;
1051 asection **csects;
1052 bfd_byte *linenos;
1053 } *reloc_info = NULL;
dc810e39 1054 bfd_size_type amt;
252b5132
RH		 1055
1056 keep_syms = obj_coff_keep_syms (abfd);
1057
1058 if ((abfd->flags & DYNAMIC) != 0
dc810e39
AM		 1059 && ! info->static_link)
1060 {
1061 if (! xcoff_link_add_dynamic_symbols (abfd, info))
b34976b6 1062 return FALSE;
252b5132
RH		 1063 }
1064
beb1bf64 1065 /* create the loader, toc, gl, ds and debug sections, if needed */
b34976b6 1066 if (! xcoff_link_create_extra_sections (abfd, info))
69f284c7 1067 goto error_return;
252b5132
RH		 1068
1069 if ((abfd->flags & DYNAMIC) != 0
1070 && ! info->static_link)
b34976b6 1071 return TRUE;
252b5132
RH		 1072
1073 n_tmask = coff_data (abfd)->local_n_tmask;
1074 n_btshft = coff_data (abfd)->local_n_btshft;
1075
1076 /* Define macros so that ISFCN, et. al., macros work correctly. */
1077#define N_TMASK n_tmask
1078#define N_BTSHFT n_btshft
1079
1080 if (info->keep_memory)
b34976b6 1081 default_copy = FALSE;
252b5132 1082 else
b34976b6 1083 default_copy = TRUE;
252b5132 1084
dc810e39 1085 symcount = obj_raw_syment_count (abfd);
252b5132
RH		 1086
1087 /* We keep a list of the linker hash table entries that correspond
1088 to each external symbol. */
dc810e39 1089 amt = symcount * sizeof (struct xcoff_link_hash_entry *);
9bab7074 1090 sym_hash = (struct xcoff_link_hash_entry **) bfd_zalloc (abfd, amt);
252b5132
RH		 1091 if (sym_hash == NULL && symcount != 0)
1092 goto error_return;
1093 coff_data (abfd)->sym_hashes = (struct coff_link_hash_entry **) sym_hash;
252b5132
RH		 1094
1095 /* Because of the weird stuff we are doing with XCOFF csects, we can
1096 not easily determine which section a symbol is in, so we store
1097 the information in the tdata for the input file. */
dc810e39 1098 amt = symcount * sizeof (asection *);
9bab7074 1099 csect_cache = (asection **) bfd_zalloc (abfd, amt);
252b5132
RH		 1100 if (csect_cache == NULL && symcount != 0)
1101 goto error_return;
1102 xcoff_data (abfd)->csects = csect_cache;
252b5132
RH		 1103
1104 /* While splitting sections into csects, we need to assign the
1105 relocs correctly. The relocs and the csects must both be in
1106 order by VMA within a given section, so we handle this by
1107 scanning along the relocs as we process the csects. We index
1108 into reloc_info using the section target_index. */
dc810e39
AM		 1109 amt = abfd->section_count + 1;
1110 amt *= sizeof (struct reloc_info_struct);
9bab7074 1111 reloc_info = (struct reloc_info_struct *) bfd_zmalloc (amt);
252b5132
RH		 1112 if (reloc_info == NULL)
1113 goto error_return;
252b5132
RH		 1114
1115 /* Read in the relocs and line numbers for each section. */
1116 linesz = bfd_coff_linesz (abfd);
1117 last_real = NULL;
dc810e39
AM		 1118 for (o = abfd->sections; o != NULL; o = o->next)
1119 {
252b5132 1120
dc810e39
AM		 1121 last_real = o;
1122 if ((o->flags & SEC_RELOC) != 0)
1123 {
252b5132 1124
dc810e39 1125 reloc_info[o->target_index].relocs =
b34976b6
AM		 1126 xcoff_read_internal_relocs (abfd, o, TRUE, (bfd_byte *) NULL,
1127 FALSE, (struct internal_reloc *) NULL);
dc810e39
AM		 1128 amt = o->reloc_count;
1129 amt *= sizeof (asection *);
9bab7074 1130 reloc_info[o->target_index].csects = (asection **) bfd_zmalloc (amt);
dc810e39
AM		 1131 if (reloc_info[o->target_index].csects == NULL)
1132 goto error_return;
dc810e39 1133 }
beb1bf64 1134
dc810e39
AM		 1135 if ((info->strip == strip_none || info->strip == strip_some)
1136 && o->lineno_count > 0)
1137 {
beb1bf64 1138
dc810e39
AM		 1139 bfd_byte *linenos;
1140
1141 amt = linesz * o->lineno_count;
1142 linenos = (bfd_byte *) bfd_malloc (amt);
1143 if (linenos == NULL)
1144 goto error_return;
1145 reloc_info[o->target_index].linenos = linenos;
1146 if (bfd_seek (abfd, o->line_filepos, SEEK_SET) != 0
1147 || bfd_bread (linenos, amt, abfd) != amt)
1148 goto error_return;
1149
1150 }
252b5132 1151 }
beb1bf64 1152
252b5132 1153 /* Don't let the linker relocation routines discard the symbols. */
b34976b6 1154 obj_coff_keep_syms (abfd) = TRUE;
252b5132
RH		 1155
1156 csect = NULL;
1157 csect_index = 0;
1158 first_csect = NULL;
1159
1160 symesz = bfd_coff_symesz (abfd);
1161 BFD_ASSERT (symesz == bfd_coff_auxesz (abfd));
1162 esym = (bfd_byte *) obj_coff_external_syms (abfd);
1163 esym_end = esym + symcount * symesz;
252b5132 1164
dc810e39
AM		 1165 while (esym < esym_end)
1166 {
1167 struct internal_syment sym;
1168 union internal_auxent aux;
1169 const char *name;
1170 char buf[SYMNMLEN + 1];
1171 int smtyp;
1172 flagword flags;
1173 asection *section;
1174 bfd_vma value;
1175 struct xcoff_link_hash_entry *set_toc;
252b5132 1176
dc810e39
AM		 1177 bfd_coff_swap_sym_in (abfd, (PTR) esym, (PTR) &sym);
1178
1179 /* In this pass we are only interested in symbols with csect
1180 information. */
1181 if (sym.n_sclass != C_EXT && sym.n_sclass != C_HIDEXT)
1182 {
252b5132 1183
dc810e39
AM		 1184 /* Set csect_cache,
1185 Normally csect is a .pr, .rw etc. created in the loop
1186 If C_FILE or first time, handle special
252b5132 1187
dc810e39
AM		 1188 Advance esym, sym_hash, csect_hash ptr's
1189 Keep track of the last_symndx for the current file. */
1190 if (sym.n_sclass == C_FILE && csect != NULL)
1191 {
1192 xcoff_section_data (abfd, csect)->last_symndx =
1193 ((esym
1194 - (bfd_byte *) obj_coff_external_syms (abfd))
1195 / symesz);
1196 csect = NULL;
1197 }
1198
1199 if (csect != NULL)
1200 *csect_cache = csect;
1201 else if (first_csect == NULL || sym.n_sclass == C_FILE)
1202 *csect_cache = coff_section_from_bfd_index (abfd, sym.n_scnum);
1203 else
1204 *csect_cache = NULL;
1205 esym += (sym.n_numaux + 1) * symesz;
1206 sym_hash += sym.n_numaux + 1;
1207 csect_cache += sym.n_numaux + 1;
1208
1209 continue;
1210 }
1211
1212 name = _bfd_coff_internal_syment_name (abfd, &sym, buf);
1213
1214 if (name == NULL)
1215 goto error_return;
252b5132
RH		 1216
1217 /* If this symbol has line number information attached to it,
b34976b6
AM		 1218 and we're not stripping it, count the number of entries and
1219 add them to the count for this csect. In the final link pass
1220 we are going to attach line number information by symbol,
1221 rather than by section, in order to more easily handle
1222 garbage collection. */
dc810e39
AM		 1223 if ((info->strip == strip_none || info->strip == strip_some)
1224 && sym.n_numaux > 1
1225 && csect != NULL
1226 && ISFCN (sym.n_type))
1227 {
252b5132 1228
dc810e39 1229 union internal_auxent auxlin;
252b5132 1230
dc810e39
AM		 1231 bfd_coff_swap_aux_in (abfd, (PTR) (esym + symesz),
1232 sym.n_type, sym.n_sclass,
1233 0, sym.n_numaux, (PTR) &auxlin);
1234
1235 if (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0)
1236 {
1237 asection *enclosing;
1238 bfd_signed_vma linoff;
1239
1240 enclosing = xcoff_section_data (abfd, csect)->enclosing;
1241 if (enclosing == NULL)
1242 {
1243 (*_bfd_error_handler)
1244 (_("%s: `%s' has line numbers but no enclosing section"),
8f615d07 1245 bfd_archive_filename (abfd), name);
dc810e39
AM		 1246 bfd_set_error (bfd_error_bad_value);
1247 goto error_return;
1248 }
1249 linoff = (auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr
1250 - enclosing->line_filepos);
7dee875e 1251 /* explicit cast to bfd_signed_vma for compiler */
dc810e39
AM		 1252 if (linoff < (bfd_signed_vma) (enclosing->lineno_count * linesz))
1253 {
1254 struct internal_lineno lin;
1255 bfd_byte *linpstart;
1256
1257 linpstart = (reloc_info[enclosing->target_index].linenos
1258 + linoff);
1259 bfd_coff_swap_lineno_in (abfd, (PTR) linpstart, (PTR) &lin);
1260 if (lin.l_lnno == 0
1261 && ((bfd_size_type) lin.l_addr.l_symndx
1262 == ((esym
1263 - (bfd_byte *) obj_coff_external_syms (abfd))
1264 / symesz)))
1265 {
1266 bfd_byte *linpend, *linp;
1267
1268 linpend = (reloc_info[enclosing->target_index].linenos
1269 + enclosing->lineno_count * linesz);
1270 for (linp = linpstart + linesz;
1271 linp < linpend;
1272 linp += linesz)
1273 {
1274 bfd_coff_swap_lineno_in (abfd, (PTR) linp,
1275 (PTR) &lin);
1276 if (lin.l_lnno == 0)
1277 break;
1278 }
1279 csect->lineno_count += (linp - linpstart) / linesz;
1280 /* The setting of line_filepos will only be
1281 useful if all the line number entries for a
1282 csect are contiguous; this only matters for
1283 error reporting. */
1284 if (csect->line_filepos == 0)
1285 csect->line_filepos =
1286 auxlin.x_sym.x_fcnary.x_fcn.x_lnnoptr;
1287 }
1288 }
beb1bf64 1289 }
beb1bf64 1290 }
252b5132 1291
dc810e39 1292 /* Pick up the csect auxiliary information. */
beb1bf64 1293
dc810e39
AM		 1294 if (sym.n_numaux == 0)
1295 {
1296 (*_bfd_error_handler)
1297 (_("%s: class %d symbol `%s' has no aux entries"),
8f615d07 1298 bfd_archive_filename (abfd), sym.n_sclass, name);
dc810e39
AM		 1299 bfd_set_error (bfd_error_bad_value);
1300 goto error_return;
1301 }
beb1bf64 1302
dc810e39
AM		 1303 bfd_coff_swap_aux_in (abfd,
1304 (PTR) (esym + symesz * sym.n_numaux),
1305 sym.n_type, sym.n_sclass,
252b5132
RH		 1306 sym.n_numaux - 1, sym.n_numaux,
1307 (PTR) &aux);
1308
1309 smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp);
1310
1311 flags = BSF_GLOBAL;
1312 section = NULL;
1313 value = 0;
1314 set_toc = NULL;
1315
1316 switch (smtyp)
1317 {
1318 default:
1319 (*_bfd_error_handler)
1320 (_("%s: symbol `%s' has unrecognized csect type %d"),
8f615d07 1321 bfd_archive_filename (abfd), name, smtyp);
252b5132
RH		 1322 bfd_set_error (bfd_error_bad_value);
1323 goto error_return;
1324
1325 case XTY_ER:
1326 /* This is an external reference. */
1327 if (sym.n_sclass == C_HIDEXT
1328 || sym.n_scnum != N_UNDEF
1329 || aux.x_csect.x_scnlen.l != 0)
1330 {
1331 (*_bfd_error_handler)
1332 (_("%s: bad XTY_ER symbol `%s': class %d scnum %d scnlen %d"),
8f615d07 1333 bfd_archive_filename (abfd), name, sym.n_sclass, sym.n_scnum,
252b5132
RH		 1334 aux.x_csect.x_scnlen.l);
1335 bfd_set_error (bfd_error_bad_value);
1336 goto error_return;
1337 }
1338
1339 /* An XMC_XO external reference is actually a reference to
b34976b6 1340 an absolute location. */
252b5132
RH		 1341 if (aux.x_csect.x_smclas != XMC_XO)
1342 section = bfd_und_section_ptr;
1343 else
1344 {
1345 section = bfd_abs_section_ptr;
1346 value = sym.n_value;
1347 }
1348 break;
1349
1350 case XTY_SD:
1351 /* This is a csect definition. */
252b5132
RH		 1352 if (csect != NULL)
1353 {
1354 xcoff_section_data (abfd, csect)->last_symndx =
dc810e39 1355 ((esym - (bfd_byte *) obj_coff_external_syms (abfd)) / symesz);
252b5132
RH		 1356 }
1357
1358 csect = NULL;
dc810e39 1359 csect_index = -(unsigned) 1;
252b5132
RH		 1360
1361 /* When we see a TOC anchor, we record the TOC value. */
1362 if (aux.x_csect.x_smclas == XMC_TC0)
1363 {
1364 if (sym.n_sclass != C_HIDEXT
1365 || aux.x_csect.x_scnlen.l != 0)
1366 {
1367 (*_bfd_error_handler)
1368 (_("%s: XMC_TC0 symbol `%s' is class %d scnlen %d"),
8f615d07 1369 bfd_archive_filename (abfd), name, sym.n_sclass,
252b5132
RH		 1370 aux.x_csect.x_scnlen.l);
1371 bfd_set_error (bfd_error_bad_value);
1372 goto error_return;
1373 }
1374 xcoff_data (abfd)->toc = sym.n_value;
1375 }
1376
dc810e39
AM		 1377 /* We must merge TOC entries for the same symbol. We can
1378 merge two TOC entries if they are both C_HIDEXT, they
1379 both have the same name, they are both 4 or 8 bytes long, and
1380 they both have a relocation table entry for an external
1381 symbol with the same name. Unfortunately, this means
1382 that we must look through the relocations. Ick.
1383
1384 Logic for 32 bit vs 64 bit.
1385 32 bit has a csect length of 4 for TOC
1386 64 bit has a csect length of 8 for TOC
1387
1388 The conditions to get past the if-check are not that bad.
1389 They are what is used to create the TOC csects in the first
1390 place. */
1391 if (aux.x_csect.x_smclas == XMC_TC
1392 && sym.n_sclass == C_HIDEXT
1393 && info->hash->creator == abfd->xvec
1394 && ((bfd_xcoff_is_xcoff32 (abfd)
1395 && aux.x_csect.x_scnlen.l == 4)
1396 || (bfd_xcoff_is_xcoff64 (abfd)
1397 && aux.x_csect.x_scnlen.l == 8)))
1398 {
1399 asection *enclosing;
1400 struct internal_reloc *relocs;
1401 bfd_size_type relindx;
1402 struct internal_reloc *rel;
252b5132 1403
dc810e39
AM		 1404 enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum);
1405 if (enclosing == NULL)
1406 goto error_return;
252b5132 1407
dc810e39
AM		 1408 relocs = reloc_info[enclosing->target_index].relocs;
1409 amt = enclosing->reloc_count;
1410 relindx = xcoff_find_reloc (relocs, amt, sym.n_value);
1411 rel = relocs + relindx;
252b5132 1412
dc810e39
AM		 1413 /* 32 bit R_POS r_size is 31
1414 64 bit R_POS r_size is 63 */
1415 if (relindx < enclosing->reloc_count
1416 && rel->r_vaddr == (bfd_vma) sym.n_value
1417 && rel->r_type == R_POS
1418 && ((bfd_xcoff_is_xcoff32 (abfd)
1419 && rel->r_size == 31)
1420 || (bfd_xcoff_is_xcoff64 (abfd)
1421 && rel->r_size == 63)))
1422 {
1423 bfd_byte *erelsym;
1424
1425 struct internal_syment relsym;
1426
1427 erelsym = ((bfd_byte *) obj_coff_external_syms (abfd)
1428 + rel->r_symndx * symesz);
1429 bfd_coff_swap_sym_in (abfd, (PTR) erelsym, (PTR) &relsym);
1430 if (relsym.n_sclass == C_EXT)
1431 {
1432 const char *relname;
1433 char relbuf[SYMNMLEN + 1];
b34976b6 1434 bfd_boolean copy;
dc810e39
AM		 1435 struct xcoff_link_hash_entry *h;
1436
1437 /* At this point we know that the TOC entry is
1438 for an externally visible symbol. */
1439
1440 relname = _bfd_coff_internal_syment_name (abfd, &relsym,
1441 relbuf);
1442 if (relname == NULL)
1443 goto error_return;
1444
1445 /* We only merge TOC entries if the TC name is
1446 the same as the symbol name. This handles
1447 the normal case, but not common cases like
1448 SYM.P4 which gcc generates to store SYM + 4
1449 in the TOC. FIXME. */
1450
1451 if (strcmp (name, relname) == 0)
1452 {
1453 copy = (! info->keep_memory
1454 || relsym._n._n_n._n_zeroes != 0
1455 || relsym._n._n_n._n_offset == 0);
1456 h = xcoff_link_hash_lookup (xcoff_hash_table (info),
b34976b6
AM		 1457 relname, TRUE, copy,
1458 FALSE);
dc810e39
AM		 1459 if (h == NULL)
1460 goto error_return;
1461
1462 /* At this point h->root.type could be
1463 bfd_link_hash_new. That should be OK,
1464 since we know for sure that we will come
1465 across this symbol as we step through the
1466 file. */
1467
1468 /* We store h in *sym_hash for the
1469 convenience of the relocate_section
1470 function. */
1471 *sym_hash = h;
1472
1473 if (h->toc_section != NULL)
1474 {
1475 asection **rel_csects;
1476
1477 /* We already have a TOC entry for this
1478 symbol, so we can just ignore this
1479 one. */
1480 rel_csects =
1481 reloc_info[enclosing->target_index].csects;
1482 rel_csects[relindx] = bfd_und_section_ptr;
1483 break;
1484 }
1485
1486 /* We are about to create a TOC entry for
1487 this symbol. */
1488 set_toc = h;
1489 } /* merge toc reloc */
1490 } /* c_ext */
1491 } /* reloc */
1492 } /* merge toc */
252b5132 1493
252b5132 1494 {
beb1bf64 1495
252b5132
RH		 1496 asection *enclosing;
1497
beb1bf64
TR		 1498 /* We need to create a new section. We get the name from
1499 the csect storage mapping class, so that the linker can
1500 accumulate similar csects together. */
252b5132 1501
beb1bf64 1502 csect = bfd_xcoff_create_csect_from_smclas(abfd, &aux, name);
dc810e39
AM		 1503 if (NULL == csect)
1504 {
1505 goto error_return;
1506 }
beb1bf64 1507
dc810e39
AM		 1508 /* The enclosing section is the main section : .data, .text
1509 or .bss that the csect is coming from. */
252b5132
RH		 1510 enclosing = coff_section_from_bfd_index (abfd, sym.n_scnum);
1511 if (enclosing == NULL)
1512 goto error_return;
beb1bf64 1513
dc810e39
AM		 1514 if (! bfd_is_abs_section (enclosing)
1515 && ((bfd_vma) sym.n_value < enclosing->vma
1516 || ((bfd_vma) sym.n_value + aux.x_csect.x_scnlen.l
1517 > enclosing->vma + enclosing->_raw_size)))
1518 {
1519 (*_bfd_error_handler)
1520 (_("%s: csect `%s' not in enclosing section"),
8f615d07 1521 bfd_archive_filename (abfd), name);
dc810e39
AM		 1522 bfd_set_error (bfd_error_bad_value);
1523 goto error_return;
1524 }
252b5132
RH		 1525 csect->vma = sym.n_value;
1526 csect->filepos = (enclosing->filepos
1527 + sym.n_value
1528 - enclosing->vma);
1529 csect->_raw_size = aux.x_csect.x_scnlen.l;
1530 csect->flags |= SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS;
1531 csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp);
1532
1533 /* Record the enclosing section in the tdata for this new
1534 section. */
dc810e39
AM		 1535 amt = sizeof (struct coff_section_tdata);
1536 csect->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
252b5132
RH		 1537 if (csect->used_by_bfd == NULL)
1538 goto error_return;
dc810e39
AM		 1539 amt = sizeof (struct xcoff_section_tdata);
1540 coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt);
252b5132
RH		 1541 if (coff_section_data (abfd, csect)->tdata == NULL)
1542 goto error_return;
1543 xcoff_section_data (abfd, csect)->enclosing = enclosing;
1544 xcoff_section_data (abfd, csect)->lineno_count =
1545 enclosing->lineno_count;
1546
dc810e39
AM		 1547 if (enclosing->owner == abfd)
1548 {
1549 struct internal_reloc *relocs;
1550 bfd_size_type relindx;
1551 struct internal_reloc *rel;
1552 asection **rel_csect;
1553
1554 relocs = reloc_info[enclosing->target_index].relocs;
1555 amt = enclosing->reloc_count;
1556 relindx = xcoff_find_reloc (relocs, amt, csect->vma);
1557
1558 rel = relocs + relindx;
1559 rel_csect = (reloc_info[enclosing->target_index].csects
1560 + relindx);
1561
1562 csect->rel_filepos = (enclosing->rel_filepos
1563 + relindx * bfd_coff_relsz (abfd));
1564 while (relindx < enclosing->reloc_count
1565 && *rel_csect == NULL
1566 && rel->r_vaddr < csect->vma + csect->_raw_size)
1567 {
beb1bf64 1568
dc810e39
AM		 1569 *rel_csect = csect;
1570 csect->flags |= SEC_RELOC;
1571 ++csect->reloc_count;
1572 ++relindx;
1573 ++rel;
1574 ++rel_csect;
1575 }
252b5132
RH		 1576 }
1577
1578 /* There are a number of other fields and section flags
1579 which we do not bother to set. */
1580
1581 csect_index = ((esym
1582 - (bfd_byte *) obj_coff_external_syms (abfd))
1583 / symesz);
1584
1585 xcoff_section_data (abfd, csect)->first_symndx = csect_index;
1586
1587 if (first_csect == NULL)
1588 first_csect = csect;
1589
1590 /* If this symbol is C_EXT, we treat it as starting at the
1591 beginning of the newly created section. */
1592 if (sym.n_sclass == C_EXT)
1593 {
1594 section = csect;
1595 value = 0;
1596 }
1597
1598 /* If this is a TOC section for a symbol, record it. */
1599 if (set_toc != NULL)
1600 set_toc->toc_section = csect;
1601 }
1602 break;
1603
1604 case XTY_LD:
1605 /* This is a label definition. The x_scnlen field is the
dc810e39 1606 symbol index of the csect. Usually the XTY_LD symbol will
8df8c619
TR		 1607 follow its appropriate XTY_SD symbol. The .set pseudo op can
1608 cause the XTY_LD to not follow the XTY_SD symbol. */
252b5132 1609 {
b34976b6 1610 bfd_boolean bad;
252b5132 1611
b34976b6 1612 bad = FALSE;
252b5132
RH		 1613 if (aux.x_csect.x_scnlen.l < 0
1614 || (aux.x_csect.x_scnlen.l
1615 >= esym - (bfd_byte *) obj_coff_external_syms (abfd)))
b34976b6 1616 bad = TRUE;
252b5132
RH		 1617 if (! bad)
1618 {
1619 section = xcoff_data (abfd)->csects[aux.x_csect.x_scnlen.l];
1620 if (section == NULL
1621 || (section->flags & SEC_HAS_CONTENTS) == 0)
b34976b6 1622 bad = TRUE;
252b5132
RH		 1623 }
1624 if (bad)
1625 {
1626 (*_bfd_error_handler)
1627 (_("%s: misplaced XTY_LD `%s'"),
8f615d07 1628 bfd_archive_filename (abfd), name);
252b5132
RH		 1629 bfd_set_error (bfd_error_bad_value);
1630 goto error_return;
1631 }
8df8c619 1632 csect = section;
252b5132
RH		 1633 value = sym.n_value - csect->vma;
1634 }
1635 break;
1636
1637 case XTY_CM:
1638 /* This is an unitialized csect. We could base the name on
b34976b6
AM		 1639 the storage mapping class, but we don't bother except for
1640 an XMC_TD symbol. If this csect is externally visible,
1641 it is a common symbol. We put XMC_TD symbols in sections
1642 named .tocbss, and rely on the linker script to put that
1643 in the TOC area. */
252b5132
RH		 1644
1645 if (csect != NULL)
1646 {
1647 xcoff_section_data (abfd, csect)->last_symndx =
1648 ((esym
1649 - (bfd_byte *) obj_coff_external_syms (abfd))
1650 / symesz);
1651 }
1652
dc810e39
AM		 1653 if (aux.x_csect.x_smclas == XMC_TD)
1654 {
1655 /* The linker script puts the .td section in the data
1656 section after the .tc section. */
1657 csect = bfd_make_section_anyway (abfd, ".td");
beb1bf64 1658
dc810e39
AM		 1659 }
1660 else
1661 {
1662 csect = bfd_make_section_anyway (abfd, ".bss");
1663 }
252b5132
RH		 1664 if (csect == NULL)
1665 goto error_return;
1666 csect->vma = sym.n_value;
1667 csect->_raw_size = aux.x_csect.x_scnlen.l;
1668 csect->flags |= SEC_ALLOC;
1669 csect->alignment_power = SMTYP_ALIGN (aux.x_csect.x_smtyp);
1670 /* There are a number of other fields and section flags
1671 which we do not bother to set. */
1672
1673 csect_index = ((esym
1674 - (bfd_byte *) obj_coff_external_syms (abfd))
1675 / symesz);
1676
dc810e39
AM		 1677 amt = sizeof (struct coff_section_tdata);
1678 csect->used_by_bfd = (PTR) bfd_zalloc (abfd, amt);
252b5132
RH		 1679 if (csect->used_by_bfd == NULL)
1680 goto error_return;
dc810e39
AM		 1681 amt = sizeof (struct xcoff_section_tdata);
1682 coff_section_data (abfd, csect)->tdata = bfd_zalloc (abfd, amt);
252b5132
RH		 1683 if (coff_section_data (abfd, csect)->tdata == NULL)
1684 goto error_return;
1685 xcoff_section_data (abfd, csect)->first_symndx = csect_index;
1686
1687 if (first_csect == NULL)
1688 first_csect = csect;
1689
1690 if (sym.n_sclass == C_EXT)
1691 {
1692 csect->flags |= SEC_IS_COMMON;
1693 csect->_raw_size = 0;
1694 section = csect;
1695 value = aux.x_csect.x_scnlen.l;
1696 }
1697
1698 break;
1699 }
1700
1701 /* Check for magic symbol names. */
dc810e39
AM		 1702 if ((smtyp == XTY_SD || smtyp == XTY_CM)
1703 && aux.x_csect.x_smclas != XMC_TC
1704 && aux.x_csect.x_smclas != XMC_TD)
1705 {
1706
1707 int i = -1;
1708
1709 if (name[0] == '_')
1710 {
1711 if (strcmp (name, "_text") == 0)
1712 i = XCOFF_SPECIAL_SECTION_TEXT;
1713 else if (strcmp (name, "_etext") == 0)
1714 i = XCOFF_SPECIAL_SECTION_ETEXT;
1715 else if (strcmp (name, "_data") == 0)
1716 i = XCOFF_SPECIAL_SECTION_DATA;
1717 else if (strcmp (name, "_edata") == 0)
1718 i = XCOFF_SPECIAL_SECTION_EDATA;
1719 else if (strcmp (name, "_end") == 0)
1720 i = XCOFF_SPECIAL_SECTION_END;
1721 }
1722 else if (name[0] == 'e' && strcmp (name, "end") == 0)
1723 {
1724 i = XCOFF_SPECIAL_SECTION_END2;
1725 }
1726
1727 if (i != -1)
1728 {
1729 xcoff_hash_table (info)->special_sections[i] = csect;
1730 }
1731 }
252b5132
RH		 1732
1733 /* Now we have enough information to add the symbol to the
b34976b6 1734 linker hash table. */
252b5132
RH		 1735
1736 if (sym.n_sclass == C_EXT)
1737 {
b34976b6 1738 bfd_boolean copy;
252b5132
RH		 1739
1740 BFD_ASSERT (section != NULL);
1741
1742 /* We must copy the name into memory if we got it from the
b34976b6 1743 syment itself, rather than the string table. */
252b5132
RH		 1744 copy = default_copy;
1745 if (sym._n._n_n._n_zeroes != 0
1746 || sym._n._n_n._n_offset == 0)
b34976b6 1747 copy = TRUE;
252b5132
RH		 1748
1749 /* The AIX linker appears to only detect multiple symbol
1750 definitions when there is a reference to the symbol. If
1751 a symbol is defined multiple times, and the only
1752 references are from the same object file, the AIX linker
1753 appears to permit it. It does not merge the different
1754 definitions, but handles them independently. On the
1755 other hand, if there is a reference, the linker reports
1756 an error.
1757
1758 This matters because the AIX <net/net_globals.h> header
1759 file actually defines an initialized array, so we have to
1760 actually permit that to work.
1761
1762 Just to make matters even more confusing, the AIX linker
1763 appears to permit multiple symbol definitions whenever
1764 the second definition is in an archive rather than an
1765 object file. This may be a consequence of the manner in
1766 which it handles archives: I think it may load the entire
1767 archive in as separate csects, and then let garbage
1768 collection discard symbols.
1769
1770 We also have to handle the case of statically linking a
1771 shared object, which will cause symbol redefinitions,
1772 although this is an easier case to detect. */
1773
dc810e39 1774 if (info->hash->creator == abfd->xvec)
252b5132
RH		 1775 {
1776 if (! bfd_is_und_section (section))
07b678c0
TR		 1777 {
1778 *sym_hash = xcoff_link_hash_lookup (xcoff_hash_table (info),
b34976b6 1779 name, TRUE, copy, FALSE);
07b678c0 1780 }
252b5132 1781 else
07b678c0
TR		 1782 {
1783 /* Make a copy of the symbol name to prevent problems with
1784 merging symbols. */
1785 *sym_hash = ((struct xcoff_link_hash_entry *)
1786 bfd_wrapped_link_hash_lookup (abfd, info, name,
b34976b6
AM		 1787 TRUE, TRUE,
1788 FALSE));
07b678c0 1789 }
252b5132
RH		 1790 if (*sym_hash == NULL)
1791 goto error_return;
1792 if (((*sym_hash)->root.type == bfd_link_hash_defined
1793 || (*sym_hash)->root.type == bfd_link_hash_defweak)
1794 && ! bfd_is_und_section (section)
1795 && ! bfd_is_com_section (section))
1796 {
1797 /* This is a second definition of a defined symbol. */
1798 if ((abfd->flags & DYNAMIC) != 0
1799 && ((*sym_hash)->smclas != XMC_GL
1800 || aux.x_csect.x_smclas == XMC_GL
1801 || ((*sym_hash)->root.u.def.section->owner->flags
1802 & DYNAMIC) == 0))
1803 {
1804 /* The new symbol is from a shared library, and
b34976b6
AM		 1805 either the existing symbol is not global
1806 linkage code or this symbol is global linkage
1807 code. If the existing symbol is global
1808 linkage code and the new symbol is not, then
1809 we want to use the new symbol. */
252b5132
RH		 1810 section = bfd_und_section_ptr;
1811 value = 0;
1812 }
1813 else if (((*sym_hash)->root.u.def.section->owner->flags
1814 & DYNAMIC) != 0)
1815 {
1816 /* The existing symbol is from a shared library.
b34976b6 1817 Replace it. */
252b5132
RH		 1818 (*sym_hash)->root.type = bfd_link_hash_undefined;
1819 (*sym_hash)->root.u.undef.abfd =
1820 (*sym_hash)->root.u.def.section->owner;
1821 }
1822 else if (abfd->my_archive != NULL)
1823 {
1824 /* This is a redefinition in an object contained
b34976b6
AM		 1825 in an archive. Just ignore it. See the
1826 comment above. */
252b5132
RH		 1827 section = bfd_und_section_ptr;
1828 value = 0;
1829 }
6ad841a1 1830 else if ((*sym_hash)->root.und_next != NULL
252b5132
RH		 1831 || info->hash->undefs_tail == &(*sym_hash)->root)
1832 {
1833 /* This symbol has been referenced. In this
b34976b6
AM		 1834 case, we just continue and permit the
1835 multiple definition error. See the comment
1836 above about the behaviour of the AIX linker. */
252b5132
RH		 1837 }
1838 else if ((*sym_hash)->smclas == aux.x_csect.x_smclas)
1839 {
1840 /* The symbols are both csects of the same
b34976b6
AM		 1841 class. There is at least a chance that this
1842 is a semi-legitimate redefinition. */
252b5132
RH		 1843 section = bfd_und_section_ptr;
1844 value = 0;
1845 (*sym_hash)->flags |= XCOFF_MULTIPLY_DEFINED;
1846 }
1847 }
1848 else if (((*sym_hash)->flags & XCOFF_MULTIPLY_DEFINED) != 0
1849 && ((*sym_hash)->root.type == bfd_link_hash_defined
1850 || (*sym_hash)->root.type == bfd_link_hash_defweak)
1851 && (bfd_is_und_section (section)
1852 || bfd_is_com_section (section)))
1853 {
1854 /* This is a reference to a multiply defined symbol.
1855 Report the error now. See the comment above
1856 about the behaviour of the AIX linker. We could
1857 also do this with warning symbols, but I'm not
1858 sure the XCOFF linker is wholly prepared to
1859 handle them, and that would only be a warning,
1860 not an error. */
1861 if (! ((*info->callbacks->multiple_definition)
1862 (info, (*sym_hash)->root.root.string,
dc810e39 1863 (bfd *) NULL, (asection *) NULL, (bfd_vma) 0,
252b5132
RH		 1864 (*sym_hash)->root.u.def.section->owner,
1865 (*sym_hash)->root.u.def.section,
1866 (*sym_hash)->root.u.def.value)))
1867 goto error_return;
1868 /* Try not to give this error too many times. */
1869 (*sym_hash)->flags &= ~XCOFF_MULTIPLY_DEFINED;
1870 }
1871 }
1872
1873 /* _bfd_generic_link_add_one_symbol may call the linker to
1874 generate an error message, and the linker may try to read
1875 the symbol table to give a good error. Right now, the
1876 line numbers are in an inconsistent state, since they are
1877 counted both in the real sections and in the new csects.
1878 We need to leave the count in the real sections so that
1879 the linker can report the line number of the error
1880 correctly, so temporarily clobber the link to the csects
1881 so that the linker will not try to read the line numbers
1882 a second time from the csects. */
1883 BFD_ASSERT (last_real->next == first_csect);
1884 last_real->next = NULL;
1885 if (! (_bfd_generic_link_add_one_symbol
1886 (info, abfd, name, flags, section, value,
b34976b6 1887 (const char *) NULL, copy, TRUE,
252b5132
RH		 1888 (struct bfd_link_hash_entry **) sym_hash)))
1889 goto error_return;
1890 last_real->next = first_csect;
1891
1892 if (smtyp == XTY_CM)
1893 {
1894 if ((*sym_hash)->root.type != bfd_link_hash_common
1895 || (*sym_hash)->root.u.c.p->section != csect)
1896 {
1897 /* We don't need the common csect we just created. */
1898 csect->_raw_size = 0;
1899 }
1900 else
1901 {
1902 (*sym_hash)->root.u.c.p->alignment_power
dc810e39 1903 = csect->alignment_power;
252b5132
RH		 1904 }
1905 }
1906
dc810e39 1907 if (info->hash->creator == abfd->xvec)
252b5132
RH		 1908 {
1909 int flag;
1910
1911 if (smtyp == XTY_ER || smtyp == XTY_CM)
1912 flag = XCOFF_REF_REGULAR;
1913 else
1914 flag = XCOFF_DEF_REGULAR;
1915 (*sym_hash)->flags |= flag;
1916
1917 if ((*sym_hash)->smclas == XMC_UA
1918 || flag == XCOFF_DEF_REGULAR)
1919 (*sym_hash)->smclas = aux.x_csect.x_smclas;
1920 }
1921 }
1922
1923 *csect_cache = csect;
1924
1925 esym += (sym.n_numaux + 1) * symesz;
1926 sym_hash += sym.n_numaux + 1;
1927 csect_cache += sym.n_numaux + 1;
1928 }
1929
1930 BFD_ASSERT (last_real == NULL || last_real->next == first_csect);
1931
1932 /* Make sure that we have seen all the relocs. */
1933 for (o = abfd->sections; o != first_csect; o = o->next)
1934 {
1935 /* Reset the section size and the line number count, since the
1936 data is now attached to the csects. Don't reset the size of
1937 the .debug section, since we need to read it below in
1938 bfd_xcoff_size_dynamic_sections. */
1939 if (strcmp (bfd_get_section_name (abfd, o), ".debug") != 0)
1940 o->_raw_size = 0;
1941 o->lineno_count = 0;
1942
1943 if ((o->flags & SEC_RELOC) != 0)
1944 {
1945 bfd_size_type i;
1946 struct internal_reloc *rel;
1947 asection **rel_csect;
1948
1949 rel = reloc_info[o->target_index].relocs;
1950 rel_csect = reloc_info[o->target_index].csects;
beb1bf64 1951
252b5132
RH		 1952 for (i = 0; i < o->reloc_count; i++, rel++, rel_csect++)
1953 {
beb1bf64 1954
252b5132
RH		 1955 if (*rel_csect == NULL)
1956 {
1957 (*_bfd_error_handler)
1958 (_("%s: reloc %s:%d not in csect"),
8f615d07 1959 bfd_archive_filename (abfd), o->name, i);
252b5132
RH		 1960 bfd_set_error (bfd_error_bad_value);
1961 goto error_return;
1962 }
1963
1964 /* We identify all symbols which are called, so that we
1965 can create glue code for calls to functions imported
1966 from dynamic objects. */
dc810e39 1967 if (info->hash->creator == abfd->xvec
252b5132
RH		 1968 && *rel_csect != bfd_und_section_ptr
1969 && (rel->r_type == R_BR
1970 || rel->r_type == R_RBR)
1971 && obj_xcoff_sym_hashes (abfd)[rel->r_symndx] != NULL)
1972 {
1973 struct xcoff_link_hash_entry *h;
1974
1975 h = obj_xcoff_sym_hashes (abfd)[rel->r_symndx];
1976 h->flags |= XCOFF_CALLED;
1977 /* If the symbol name starts with a period, it is
b34976b6
AM		 1978 the code of a function. If the symbol is
1979 currently undefined, then add an undefined symbol
1980 for the function descriptor. This should do no
1981 harm, because any regular object that defines the
1982 function should also define the function
1983 descriptor. It helps, because it means that we
1984 will identify the function descriptor with a
1985 dynamic object if a dynamic object defines it. */
252b5132
RH		 1986 if (h->root.root.string[0] == '.'
1987 && h->descriptor == NULL)
1988 {
1989 struct xcoff_link_hash_entry *hds;
14a793b2 1990 struct bfd_link_hash_entry *bh;
252b5132
RH		 1991
1992 hds = xcoff_link_hash_lookup (xcoff_hash_table (info),
1993 h->root.root.string + 1,
b34976b6 1994 TRUE, FALSE, TRUE);
252b5132
RH		 1995 if (hds == NULL)
1996 goto error_return;
1997 if (hds->root.type == bfd_link_hash_new)
1998 {
14a793b2 1999 bh = &hds->root;
252b5132
RH		 2000 if (! (_bfd_generic_link_add_one_symbol
2001 (info, abfd, hds->root.root.string,
2002 (flagword) 0, bfd_und_section_ptr,
b34976b6
AM		 2003 (bfd_vma) 0, (const char *) NULL, FALSE,
2004 TRUE, &bh)))
252b5132 2005 goto error_return;
14a793b2 2006 hds = (struct xcoff_link_hash_entry *) bh;
252b5132
RH		 2007 }
2008 hds->flags |= XCOFF_DESCRIPTOR;
2009 BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0
2010 && (h->flags & XCOFF_DESCRIPTOR) == 0);
2011 hds->descriptor = h;
2012 h->descriptor = hds;
2013 }
2014 }
2015 }
2016
2017 free (reloc_info[o->target_index].csects);
2018 reloc_info[o->target_index].csects = NULL;
2019
2020 /* Reset SEC_RELOC and the reloc_count, since the reloc
2021 information is now attached to the csects. */
beb1bf64 2022 o->flags &=~ SEC_RELOC;
252b5132
RH		 2023 o->reloc_count = 0;
2024
2025 /* If we are not keeping memory, free the reloc information. */
2026 if (! info->keep_memory
2027 && coff_section_data (abfd, o) != NULL
2028 && coff_section_data (abfd, o)->relocs != NULL
2029 && ! coff_section_data (abfd, o)->keep_relocs)
2030 {
2031 free (coff_section_data (abfd, o)->relocs);
2032 coff_section_data (abfd, o)->relocs = NULL;
2033 }
2034 }
2035
2036 /* Free up the line numbers. FIXME: We could cache these
b34976b6 2037 somewhere for the final link, to avoid reading them again. */
252b5132
RH		 2038 if (reloc_info[o->target_index].linenos != NULL)
2039 {
2040 free (reloc_info[o->target_index].linenos);
2041 reloc_info[o->target_index].linenos = NULL;
2042 }
2043 }
2044
2045 free (reloc_info);
2046
2047 obj_coff_keep_syms (abfd) = keep_syms;
2048
b34976b6 2049 return TRUE;
252b5132
RH		 2050
2051 error_return:
2052 if (reloc_info != NULL)
2053 {
2054 for (o = abfd->sections; o != NULL; o = o->next)
2055 {
2056 if (reloc_info[o->target_index].csects != NULL)
2057 free (reloc_info[o->target_index].csects);
2058 if (reloc_info[o->target_index].linenos != NULL)
2059 free (reloc_info[o->target_index].linenos);
2060 }
dc810e39 2061 free (reloc_info);
252b5132
RH		 2062 }
2063 obj_coff_keep_syms (abfd) = keep_syms;
b34976b6 2064 return FALSE;
252b5132
RH		 2065}
2066
2067#undef N_TMASK
2068#undef N_BTSHFT
2069
2070/* This function is used to add symbols from a dynamic object to the
2071 global symbol table. */
2072
b34976b6 2073static bfd_boolean
252b5132
RH		 2074xcoff_link_add_dynamic_symbols (abfd, info)
2075 bfd *abfd;
2076 struct bfd_link_info *info;
2077{
2078 asection *lsec;
beb1bf64 2079 bfd_byte *contents;
252b5132
RH		 2080 struct internal_ldhdr ldhdr;
2081 const char *strings;
beb1bf64 2082 bfd_byte *elsym, *elsymend;
252b5132
RH		 2083 struct xcoff_import_file *n;
2084 const char *bname;
2085 const char *mname;
2086 const char *s;
2087 unsigned int c;
2088 struct xcoff_import_file **pp;
2089
2090 /* We can only handle a dynamic object if we are generating an XCOFF
2091 output file. */
dc810e39 2092 if (info->hash->creator != abfd->xvec)
252b5132
RH		 2093 {
2094 (*_bfd_error_handler)
2095 (_("%s: XCOFF shared object when not producing XCOFF output"),
2096 bfd_get_filename (abfd));
dc810e39 2097 bfd_set_error (bfd_error_invalid_operation);
b34976b6 2098 return FALSE;
252b5132 2099 }
dc810e39 2100
252b5132
RH		 2101 /* The symbols we use from a dynamic object are not the symbols in
2102 the normal symbol table, but, rather, the symbols in the export
2103 table. If there is a global symbol in a dynamic object which is
2104 not in the export table, the loader will not be able to find it,
2105 so we don't want to find it either. Also, on AIX 4.1.3, shr.o in
2106 libc.a has symbols in the export table which are not in the
2107 symbol table. */
2108
2109 /* Read in the .loader section. FIXME: We should really use the
2110 o_snloader field in the a.out header, rather than grabbing the
2111 section by name. */
2112 lsec = bfd_get_section_by_name (abfd, ".loader");
2113 if (lsec == NULL)
2114 {
2115 (*_bfd_error_handler)
2116 (_("%s: dynamic object with no .loader section"),
2117 bfd_get_filename (abfd));
2118 bfd_set_error (bfd_error_no_symbols);
b34976b6 2119 return FALSE;
252b5132
RH		 2120 }
2121
beb1bf64 2122
252b5132 2123 if (! xcoff_get_section_contents (abfd, lsec))
b34976b6 2124 return FALSE;
beb1bf64 2125 contents = coff_section_data (abfd, lsec)->contents;
252b5132
RH		 2126
2127 /* Remove the sections from this object, so that they do not get
2128 included in the link. */
e54fdaa5 2129 bfd_section_list_clear (abfd);
252b5132 2130
beb1bf64
TR		 2131 bfd_xcoff_swap_ldhdr_in (abfd, contents, &ldhdr);
2132
2133 strings = (char *) contents + ldhdr.l_stoff;
2134
2135 elsym = contents + bfd_xcoff_loader_symbol_offset(abfd, &ldhdr);
252b5132 2136
beb1bf64 2137 elsymend = elsym + ldhdr.l_nsyms * bfd_xcoff_ldsymsz(abfd);
252b5132 2138
beb1bf64 2139 for (; elsym < elsymend; elsym += bfd_xcoff_ldsymsz(abfd))
252b5132
RH		 2140 {
2141 struct internal_ldsym ldsym;
2142 char nambuf[SYMNMLEN + 1];
2143 const char *name;
2144 struct xcoff_link_hash_entry *h;
2145
beb1bf64 2146 bfd_xcoff_swap_ldsym_in (abfd, elsym, &ldsym);
252b5132
RH		 2147
2148 /* We are only interested in exported symbols. */
2149 if ((ldsym.l_smtype & L_EXPORT) == 0)
2150 continue;
2151
2152 if (ldsym._l._l_l._l_zeroes == 0)
2153 name = strings + ldsym._l._l_l._l_offset;
2154 else
2155 {
2156 memcpy (nambuf, ldsym._l._l_name, SYMNMLEN);
2157 nambuf[SYMNMLEN] = '\0';
2158 name = nambuf;
2159 }
2160
2161 /* Normally we could not call xcoff_link_hash_lookup in an add
2162 symbols routine, since we might not be using an XCOFF hash
2163 table. However, we verified above that we are using an XCOFF
2164 hash table. */
2165
b34976b6
AM		 2166 h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE,
2167 TRUE, TRUE);
252b5132 2168 if (h == NULL)
b34976b6 2169 return FALSE;
252b5132
RH		 2170
2171 h->flags |= XCOFF_DEF_DYNAMIC;
2172
2173 /* If the symbol is undefined, and the BFD it was found in is
2174 not a dynamic object, change the BFD to this dynamic object,
2175 so that we can get the correct import file ID. */
2176 if ((h->root.type == bfd_link_hash_undefined
2177 || h->root.type == bfd_link_hash_undefweak)
2178 && (h->root.u.undef.abfd == NULL
2179 || (h->root.u.undef.abfd->flags & DYNAMIC) == 0))
2180 h->root.u.undef.abfd = abfd;
2181
2182 if (h->root.type == bfd_link_hash_new)
2183 {
2184 h->root.type = bfd_link_hash_undefined;
2185 h->root.u.undef.abfd = abfd;
2186 /* We do not want to add this to the undefined symbol list. */
2187 }
2188
2189 if (h->smclas == XMC_UA
2190 || h->root.type == bfd_link_hash_undefined
2191 || h->root.type == bfd_link_hash_undefweak)
2192 h->smclas = ldsym.l_smclas;
2193
2194 /* Unless this is an XMC_XO symbol, we don't bother to actually
b34976b6
AM		 2195 define it, since we don't have a section to put it in anyhow.
2196 Instead, the relocation routines handle the DEF_DYNAMIC flag
2197 correctly. */
252b5132
RH		 2198
2199 if (h->smclas == XMC_XO
2200 && (h->root.type == bfd_link_hash_undefined
2201 || h->root.type == bfd_link_hash_undefweak))
2202 {
2203 /* This symbol has an absolute value. */
2204 h->root.type = bfd_link_hash_defined;
2205 h->root.u.def.section = bfd_abs_section_ptr;
2206 h->root.u.def.value = ldsym.l_value;
2207 }
2208
2209 /* If this symbol defines a function descriptor, then it
2210 implicitly defines the function code as well. */
2211 if (h->smclas == XMC_DS
2212 || (h->smclas == XMC_XO && name[0] != '.'))
2213 h->flags |= XCOFF_DESCRIPTOR;
2214 if ((h->flags & XCOFF_DESCRIPTOR) != 0)
2215 {
2216 struct xcoff_link_hash_entry *hds;
2217
2218 hds = h->descriptor;
2219 if (hds == NULL)
2220 {
2221 char *dsnm;
2222
dc810e39 2223 dsnm = bfd_malloc ((bfd_size_type) strlen (name) + 2);
252b5132 2224 if (dsnm == NULL)
b34976b6 2225 return FALSE;
252b5132
RH		 2226 dsnm[0] = '.';
2227 strcpy (dsnm + 1, name);
2228 hds = xcoff_link_hash_lookup (xcoff_hash_table (info), dsnm,
b34976b6 2229 TRUE, TRUE, TRUE);
252b5132
RH		 2230 free (dsnm);
2231 if (hds == NULL)
b34976b6 2232 return FALSE;
252b5132
RH		 2233
2234 if (hds->root.type == bfd_link_hash_new)
2235 {
2236 hds->root.type = bfd_link_hash_undefined;
2237 hds->root.u.undef.abfd = abfd;
2238 /* We do not want to add this to the undefined
b34976b6 2239 symbol list. */
252b5132
RH		 2240 }
2241
2242 hds->descriptor = h;
2243 h->descriptor = hds;
2244 }
2245
2246 hds->flags |= XCOFF_DEF_DYNAMIC;
2247 if (hds->smclas == XMC_UA)
2248 hds->smclas = XMC_PR;
2249
2250 /* An absolute symbol appears to actually define code, not a
2251 function descriptor. This is how some math functions are
2252 implemented on AIX 4.1. */
2253 if (h->smclas == XMC_XO
2254 && (hds->root.type == bfd_link_hash_undefined
2255 || hds->root.type == bfd_link_hash_undefweak))
2256 {
2257 hds->smclas = XMC_XO;
2258 hds->root.type = bfd_link_hash_defined;
2259 hds->root.u.def.section = bfd_abs_section_ptr;
2260 hds->root.u.def.value = ldsym.l_value;
2261 }
2262 }
2263 }
2264
beb1bf64 2265 if (contents != NULL && ! coff_section_data (abfd, lsec)->keep_contents)
252b5132
RH		 2266 {
2267 free (coff_section_data (abfd, lsec)->contents);
2268 coff_section_data (abfd, lsec)->contents = NULL;
2269 }
2270
2271 /* Record this file in the import files. */
2272
2273 n = ((struct xcoff_import_file *)
dc810e39 2274 bfd_alloc (abfd, (bfd_size_type) sizeof (struct xcoff_import_file)));
252b5132 2275 if (n == NULL)
b34976b6 2276 return FALSE;
252b5132
RH		 2277 n->next = NULL;
2278
2279 /* For some reason, the path entry in the import file list for a
2280 shared object appears to always be empty. The file name is the
2281 base name. */
2282 n->path = "";
2283 if (abfd->my_archive == NULL)
2284 {
2285 bname = bfd_get_filename (abfd);
2286 mname = "";
2287 }
2288 else
2289 {
2290 bname = bfd_get_filename (abfd->my_archive);
2291 mname = bfd_get_filename (abfd);
2292 }
2293 s = strrchr (bname, '/');
2294 if (s != NULL)
2295 bname = s + 1;
2296 n->file = bname;
2297 n->member = mname;
2298
2299 /* We start c at 1 because the first import file number is reserved
2300 for LIBPATH. */
2301 for (pp = &xcoff_hash_table (info)->imports, c = 1;
2302 *pp != NULL;
2303 pp = &(*pp)->next, ++c)
2304 ;
2305 *pp = n;
2306
2307 xcoff_data (abfd)->import_file_id = c;
2308
b34976b6 2309 return TRUE;
252b5132
RH		 2310}
2311\f
2312/* Routines that are called after all the input files have been
2313 handled, but before the sections are laid out in memory. */
2314
2315/* Mark a symbol as not being garbage, including the section in which
2316 it is defined. */
2317
b34976b6 2318static INLINE bfd_boolean
252b5132
RH		 2319xcoff_mark_symbol (info, h)
2320 struct bfd_link_info *info;
2321 struct xcoff_link_hash_entry *h;
2322{
beb1bf64 2323
252b5132 2324 if ((h->flags & XCOFF_MARK) != 0)
b34976b6 2325 return TRUE;
252b5132
RH		 2326
2327 h->flags |= XCOFF_MARK;
2328 if (h->root.type == bfd_link_hash_defined
2329 || h->root.type == bfd_link_hash_defweak)
2330 {
2331 asection *hsec;
2332
2333 hsec = h->root.u.def.section;
2334 if (! bfd_is_abs_section (hsec)
2335 && (hsec->flags & SEC_MARK) == 0)
2336 {
2337 if (! xcoff_mark (info, hsec))
b34976b6 2338 return FALSE;
252b5132
RH		 2339 }
2340 }
2341
2342 if (h->toc_section != NULL
2343 && (h->toc_section->flags & SEC_MARK) == 0)
2344 {
2345 if (! xcoff_mark (info, h->toc_section))
b34976b6 2346 return FALSE;
252b5132
RH		 2347 }
2348
b34976b6 2349 return TRUE;
252b5132
RH		 2350}
2351
2352/* The mark phase of garbage collection. For a given section, mark
2353 it, and all the sections which define symbols to which it refers.
2354 Because this function needs to look at the relocs, we also count
2355 the number of relocs which need to be copied into the .loader
2356 section. */
2357
b34976b6 2358static bfd_boolean
252b5132
RH		 2359xcoff_mark (info, sec)
2360 struct bfd_link_info *info;
2361 asection *sec;
2362{
2363 if (bfd_is_abs_section (sec)
2364 || (sec->flags & SEC_MARK) != 0)
b34976b6 2365 return TRUE;
252b5132
RH		 2366
2367 sec->flags |= SEC_MARK;
2368
2369 if (sec->owner->xvec == info->hash->creator
2370 && coff_section_data (sec->owner, sec) != NULL
2371 && xcoff_section_data (sec->owner, sec) != NULL)
2372 {
2373 register struct xcoff_link_hash_entry **hp, **hpend;
2374 struct internal_reloc *rel, *relend;
2375
2376 /* Mark all the symbols in this section. */
2377
2378 hp = (obj_xcoff_sym_hashes (sec->owner)
2379 + xcoff_section_data (sec->owner, sec)->first_symndx);
2380 hpend = (obj_xcoff_sym_hashes (sec->owner)
2381 + xcoff_section_data (sec->owner, sec)->last_symndx);
2382 for (; hp < hpend; hp++)
2383 {
2384 register struct xcoff_link_hash_entry *h;
2385
2386 h = *hp;
2387 if (h != NULL
2388 && (h->flags & XCOFF_MARK) == 0)
2389 {
2390 if (! xcoff_mark_symbol (info, h))
b34976b6 2391 return FALSE;
252b5132
RH		 2392 }
2393 }
2394
2395 /* Look through the section relocs. */
2396
2397 if ((sec->flags & SEC_RELOC) != 0
2398 && sec->reloc_count > 0)
2399 {
b34976b6
AM		 2400 rel = xcoff_read_internal_relocs (sec->owner, sec, TRUE,
2401 (bfd_byte *) NULL, FALSE,
252b5132
RH		 2402 (struct internal_reloc *) NULL);
2403 if (rel == NULL)
b34976b6 2404 return FALSE;
252b5132
RH		 2405 relend = rel + sec->reloc_count;
2406 for (; rel < relend; rel++)
2407 {
2408 asection *rsec;
2409 struct xcoff_link_hash_entry *h;
2410
2411 if ((unsigned int) rel->r_symndx
2412 > obj_raw_syment_count (sec->owner))
2413 continue;
2414
2415 h = obj_xcoff_sym_hashes (sec->owner)[rel->r_symndx];
2416 if (h != NULL
2417 && (h->flags & XCOFF_MARK) == 0)
2418 {
2419 if (! xcoff_mark_symbol (info, h))
b34976b6 2420 return FALSE;
252b5132
RH		 2421 }
2422
2423 rsec = xcoff_data (sec->owner)->csects[rel->r_symndx];
2424 if (rsec != NULL
2425 && (rsec->flags & SEC_MARK) == 0)
2426 {
2427 if (! xcoff_mark (info, rsec))
b34976b6 2428 return FALSE;
252b5132
RH		 2429 }
2430
2431 /* See if this reloc needs to be copied into the .loader
b34976b6 2432 section. */
252b5132
RH		 2433 switch (rel->r_type)
2434 {
2435 default:
2436 if (h == NULL
2437 || h->root.type == bfd_link_hash_defined
2438 || h->root.type == bfd_link_hash_defweak
2439 || h->root.type == bfd_link_hash_common
2440 || ((h->flags & XCOFF_CALLED) != 0
2441 && (h->root.type == bfd_link_hash_undefined
2442 || h->root.type == bfd_link_hash_undefweak)
2443 && h->root.root.string[0] == '.'
2444 && h->descriptor != NULL
2445 && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0
2446 || ((h->descriptor->flags & XCOFF_IMPORT) != 0
2447 && (h->descriptor->flags
2448 & XCOFF_DEF_REGULAR) == 0))))
2449 break;
2450 /* Fall through. */
2451 case R_POS:
2452 case R_NEG:
2453 case R_RL:
2454 case R_RLA:
2455 ++xcoff_hash_table (info)->ldrel_count;
2456 if (h != NULL)
2457 h->flags |= XCOFF_LDREL;
2458 break;
2459 case R_TOC:
2460 case R_GL:
2461 case R_TCL:
2462 case R_TRL:
2463 case R_TRLA:
2464 /* We should never need a .loader reloc for a TOC
2465 relative reloc. */
2466 break;
2467 }
2468 }
2469
2470 if (! info->keep_memory
2471 && coff_section_data (sec->owner, sec) != NULL
2472 && coff_section_data (sec->owner, sec)->relocs != NULL
2473 && ! coff_section_data (sec->owner, sec)->keep_relocs)
2474 {
2475 free (coff_section_data (sec->owner, sec)->relocs);
2476 coff_section_data (sec->owner, sec)->relocs = NULL;
2477 }
2478 }
2479 }
2480
b34976b6 2481 return TRUE;
252b5132
RH		 2482}
2483
2484/* The sweep phase of garbage collection. Remove all garbage
2485 sections. */
2486
2487static void
2488xcoff_sweep (info)
2489 struct bfd_link_info *info;
2490{
2491 bfd *sub;
2492
2493 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
2494 {
2495 asection *o;
2496
2497 for (o = sub->sections; o != NULL; o = o->next)
2498 {
2499 if ((o->flags & SEC_MARK) == 0)
2500 {
2501 /* Keep all sections from non-XCOFF input files. Keep
b34976b6
AM		 2502 special sections. Keep .debug sections for the
2503 moment. */
252b5132
RH		 2504 if (sub->xvec != info->hash->creator
2505 || o == xcoff_hash_table (info)->debug_section
2506 || o == xcoff_hash_table (info)->loader_section
2507 || o == xcoff_hash_table (info)->linkage_section
2508 || o == xcoff_hash_table (info)->toc_section
2509 || o == xcoff_hash_table (info)->descriptor_section
2510 || strcmp (o->name, ".debug") == 0)
2511 o->flags |= SEC_MARK;
2512 else
2513 {
2514 o->_raw_size = 0;
2515 o->reloc_count = 0;
2516 o->lineno_count = 0;
2517 }
2518 }
2519 }
2520 }
2521}
2522
2523/* Record the number of elements in a set. This is used to output the
2524 correct csect length. */
2525
b34976b6 2526bfd_boolean
252b5132
RH		 2527bfd_xcoff_link_record_set (output_bfd, info, harg, size)
2528 bfd *output_bfd;
2529 struct bfd_link_info *info;
2530 struct bfd_link_hash_entry *harg;
2531 bfd_size_type size;
2532{
2533 struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
2534 struct xcoff_link_size_list *n;
dc810e39 2535 bfd_size_type amt;
252b5132 2536
9bd09e22 2537 if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
b34976b6 2538 return TRUE;
252b5132
RH		 2539
2540 /* This will hardly ever be called. I don't want to burn four bytes
2541 per global symbol, so instead the size is kept on a linked list
2542 attached to the hash table. */
2543
dc810e39
AM		 2544 amt = sizeof (struct xcoff_link_size_list);
2545 n = (struct xcoff_link_size_list *) bfd_alloc (output_bfd, amt);
252b5132 2546 if (n == NULL)
b34976b6 2547 return FALSE;
252b5132
RH		 2548 n->next = xcoff_hash_table (info)->size_list;
2549 n->h = h;
2550 n->size = size;
2551 xcoff_hash_table (info)->size_list = n;
2552
2553 h->flags |= XCOFF_HAS_SIZE;
2554
b34976b6 2555 return TRUE;
252b5132
RH		 2556}
2557
2558/* Import a symbol. */
2559
b34976b6 2560bfd_boolean
252b5132 2561bfd_xcoff_import_symbol (output_bfd, info, harg, val, imppath, impfile,
1fdf0249 2562 impmember, syscall_flag)
252b5132
RH		 2563 bfd *output_bfd;
2564 struct bfd_link_info *info;
2565 struct bfd_link_hash_entry *harg;
2566 bfd_vma val;
2567 const char *imppath;
2568 const char *impfile;
2569 const char *impmember;
1fdf0249 2570 unsigned int syscall_flag;
252b5132
RH		 2571{
2572 struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
2573
9bd09e22 2574 if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
b34976b6 2575 return TRUE;
252b5132
RH		 2576
2577 /* A symbol name which starts with a period is the code for a
2578 function. If the symbol is undefined, then add an undefined
2579 symbol for the function descriptor, and import that instead. */
2580 if (h->root.root.string[0] == '.'
2581 && h->root.type == bfd_link_hash_undefined
2582 && val == (bfd_vma) -1)
2583 {
2584 struct xcoff_link_hash_entry *hds;
2585
2586 hds = h->descriptor;
2587 if (hds == NULL)
2588 {
2589 hds = xcoff_link_hash_lookup (xcoff_hash_table (info),
2590 h->root.root.string + 1,
b34976b6 2591 TRUE, FALSE, TRUE);
252b5132 2592 if (hds == NULL)
b34976b6 2593 return FALSE;
252b5132
RH		 2594 if (hds->root.type == bfd_link_hash_new)
2595 {
2596 hds->root.type = bfd_link_hash_undefined;
2597 hds->root.u.undef.abfd = h->root.u.undef.abfd;
2598 }
2599 hds->flags |= XCOFF_DESCRIPTOR;
2600 BFD_ASSERT ((hds->flags & XCOFF_CALLED) == 0
2601 && (h->flags & XCOFF_DESCRIPTOR) == 0);
2602 hds->descriptor = h;
2603 h->descriptor = hds;
2604 }
2605
2606 /* Now, if the descriptor is undefined, import the descriptor
b34976b6
AM		 2607 rather than the symbol we were told to import. FIXME: Is
2608 this correct in all cases? */
252b5132
RH		 2609 if (hds->root.type == bfd_link_hash_undefined)
2610 h = hds;
2611 }
2612
1fdf0249 2613 h->flags |= (XCOFF_IMPORT | syscall_flag);
252b5132
RH		 2614
2615 if (val != (bfd_vma) -1)
2616 {
2617 if (h->root.type == bfd_link_hash_defined
2618 && (! bfd_is_abs_section (h->root.u.def.section)
2619 || h->root.u.def.value != val))
2620 {
2621 if (! ((*info->callbacks->multiple_definition)
2622 (info, h->root.root.string, h->root.u.def.section->owner,
2623 h->root.u.def.section, h->root.u.def.value,
2624 output_bfd, bfd_abs_section_ptr, val)))
b34976b6 2625 return FALSE;
252b5132
RH		 2626 }
2627
2628 h->root.type = bfd_link_hash_defined;
2629 h->root.u.def.section = bfd_abs_section_ptr;
2630 h->root.u.def.value = val;
2631 }
2632
2633 /* We overload the ldindx field to hold the l_ifile value for this
2634 symbol. */
2635 BFD_ASSERT (h->ldsym == NULL);
2636 BFD_ASSERT ((h->flags & XCOFF_BUILT_LDSYM) == 0);
2637 if (imppath == NULL)
2638 h->ldindx = -1;
2639 else
2640 {
2641 unsigned int c;
2642 struct xcoff_import_file **pp;
2643
2644 /* We start c at 1 because the first entry in the import list is
b34976b6 2645 reserved for the library search path. */
252b5132
RH		 2646 for (pp = &xcoff_hash_table (info)->imports, c = 1;
2647 *pp != NULL;
2648 pp = &(*pp)->next, ++c)
2649 {
2650 if (strcmp ((*pp)->path, imppath) == 0
2651 && strcmp ((*pp)->file, impfile) == 0
2652 && strcmp ((*pp)->member, impmember) == 0)
2653 break;
2654 }
2655
2656 if (*pp == NULL)
2657 {
2658 struct xcoff_import_file *n;
dc810e39 2659 bfd_size_type amt = sizeof (struct xcoff_import_file);
252b5132 2660
dc810e39 2661 n = (struct xcoff_import_file *) bfd_alloc (output_bfd, amt);
252b5132 2662 if (n == NULL)
b34976b6 2663 return FALSE;
252b5132
RH		 2664 n->next = NULL;
2665 n->path = imppath;
2666 n->file = impfile;
2667 n->member = impmember;
2668 *pp = n;
2669 }
2670
2671 h->ldindx = c;
2672 }
2673
b34976b6 2674 return TRUE;
252b5132
RH		 2675}
2676
2677/* Export a symbol. */
2678
b34976b6 2679bfd_boolean
1fdf0249 2680bfd_xcoff_export_symbol (output_bfd, info, harg)
252b5132
RH		 2681 bfd *output_bfd;
2682 struct bfd_link_info *info;
2683 struct bfd_link_hash_entry *harg;
252b5132
RH		 2684{
2685 struct xcoff_link_hash_entry *h = (struct xcoff_link_hash_entry *) harg;
2686
9bd09e22 2687 if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
b34976b6 2688 return TRUE;
252b5132
RH		 2689
2690 h->flags |= XCOFF_EXPORT;
2691
2692 /* FIXME: I'm not at all sure what syscall is supposed to mean, so
2693 I'm just going to ignore it until somebody explains it. */
2694
2695 /* See if this is a function descriptor. It may be one even though
2696 it is not so marked. */
2697 if ((h->flags & XCOFF_DESCRIPTOR) == 0
2698 && h->root.root.string[0] != '.')
2699 {
2700 char *fnname;
2701 struct xcoff_link_hash_entry *hfn;
dc810e39 2702 bfd_size_type amt = strlen (h->root.root.string) + 2;
252b5132 2703
dc810e39 2704 fnname = (char *) bfd_malloc (amt);
252b5132 2705 if (fnname == NULL)
b34976b6 2706 return FALSE;
252b5132
RH		 2707 fnname[0] = '.';
2708 strcpy (fnname + 1, h->root.root.string);
2709 hfn = xcoff_link_hash_lookup (xcoff_hash_table (info),
b34976b6 2710 fnname, FALSE, FALSE, TRUE);
252b5132
RH		 2711 free (fnname);
2712 if (hfn != NULL
2713 && hfn->smclas == XMC_PR
2714 && (hfn->root.type == bfd_link_hash_defined
2715 || hfn->root.type == bfd_link_hash_defweak))
2716 {
2717 h->flags |= XCOFF_DESCRIPTOR;
2718 h->descriptor = hfn;
2719 hfn->descriptor = h;
2720 }
2721 }
2722
2723 /* Make sure we don't garbage collect this symbol. */
2724 if (! xcoff_mark_symbol (info, h))
b34976b6 2725 return FALSE;
252b5132
RH		 2726
2727 /* If this is a function descriptor, make sure we don't garbage
2728 collect the associated function code. We normally don't have to
2729 worry about this, because the descriptor will be attached to a
2730 section with relocs, but if we are creating the descriptor
2731 ourselves those relocs will not be visible to the mark code. */
2732 if ((h->flags & XCOFF_DESCRIPTOR) != 0)
2733 {
2734 if (! xcoff_mark_symbol (info, h->descriptor))
b34976b6 2735 return FALSE;
252b5132
RH		 2736 }
2737
b34976b6 2738 return TRUE;
252b5132
RH		 2739}
2740
2741/* Count a reloc against a symbol. This is called for relocs
2742 generated by the linker script, typically for global constructors
2743 and destructors. */
2744
b34976b6 2745bfd_boolean
252b5132
RH		 2746bfd_xcoff_link_count_reloc (output_bfd, info, name)
2747 bfd *output_bfd;
2748 struct bfd_link_info *info;
2749 const char *name;
2750{
2751 struct xcoff_link_hash_entry *h;
2752
9bd09e22 2753 if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
b34976b6 2754 return TRUE;
252b5132
RH		 2755
2756 h = ((struct xcoff_link_hash_entry *)
b34976b6
AM		 2757 bfd_wrapped_link_hash_lookup (output_bfd, info, name, FALSE, FALSE,
2758 FALSE));
252b5132
RH		 2759 if (h == NULL)
2760 {
2761 (*_bfd_error_handler) (_("%s: no such symbol"), name);
2762 bfd_set_error (bfd_error_no_symbols);
b34976b6 2763 return FALSE;
252b5132
RH		 2764 }
2765
2766 h->flags |= XCOFF_REF_REGULAR | XCOFF_LDREL;
2767 ++xcoff_hash_table (info)->ldrel_count;
fbc4fff4 2768
252b5132
RH		 2769 /* Mark the symbol to avoid garbage collection. */
2770 if (! xcoff_mark_symbol (info, h))
b34976b6 2771 return FALSE;
252b5132 2772
b34976b6 2773 return TRUE;
252b5132
RH		 2774}
2775
2776/* This function is called for each symbol to which the linker script
2777 assigns a value. */
2778
b34976b6 2779bfd_boolean
252b5132
RH		 2780bfd_xcoff_record_link_assignment (output_bfd, info, name)
2781 bfd *output_bfd;
2782 struct bfd_link_info *info;
2783 const char *name;
2784{
2785 struct xcoff_link_hash_entry *h;
2786
9bd09e22 2787 if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
b34976b6 2788 return TRUE;
252b5132 2789
b34976b6
AM		 2790 h = xcoff_link_hash_lookup (xcoff_hash_table (info), name, TRUE, TRUE,
2791 FALSE);
252b5132 2792 if (h == NULL)
b34976b6 2793 return FALSE;
252b5132
RH		 2794
2795 h->flags |= XCOFF_DEF_REGULAR;
2796
b34976b6 2797 return TRUE;
252b5132
RH		 2798}
2799
252b5132
RH		 2800/* Build the .loader section. This is called by the XCOFF linker
2801 emulation before_allocation routine. We must set the size of the
2802 .loader section before the linker lays out the output file.
2803 LIBPATH is the library path to search for shared objects; this is
2804 normally built from the -L arguments passed to the linker. ENTRY
2805 is the name of the entry point symbol (the -e linker option).
2806 FILE_ALIGN is the alignment to use for sections within the file
2807 (the -H linker option). MAXSTACK is the maximum stack size (the
2808 -bmaxstack linker option). MAXDATA is the maximum data size (the
2809 -bmaxdata linker option). GC is whether to do garbage collection
2810 (the -bgc linker option). MODTYPE is the module type (the
2811 -bmodtype linker option). TEXTRO is whether the text section must
2812 be read only (the -btextro linker option). EXPORT_DEFINEDS is
2813 whether all defined symbols should be exported (the -unix linker
2814 option). SPECIAL_SECTIONS is set by this routine to csects with
2815 magic names like _end. */
2816
b34976b6 2817bfd_boolean
252b5132
RH		 2818bfd_xcoff_size_dynamic_sections (output_bfd, info, libpath, entry,
2819 file_align, maxstack, maxdata, gc,
2820 modtype, textro, export_defineds,
69f284c7 2821 special_sections, rtld)
252b5132
RH		 2822 bfd *output_bfd;
2823 struct bfd_link_info *info;
2824 const char *libpath;
2825 const char *entry;
2826 unsigned long file_align;
2827 unsigned long maxstack;
2828 unsigned long maxdata;
b34976b6 2829 bfd_boolean gc;
252b5132 2830 int modtype;
b34976b6
AM		 2831 bfd_boolean textro;
2832 bfd_boolean export_defineds;
252b5132 2833 asection **special_sections;
b34976b6 2834 bfd_boolean rtld;
252b5132
RH		 2835{
2836 struct xcoff_link_hash_entry *hentry;
2837 asection *lsec;
2838 struct xcoff_loader_info ldinfo;
2839 int i;
2840 size_t impsize, impcount;
2841 struct xcoff_import_file *fl;
2842 struct internal_ldhdr *ldhdr;
2843 bfd_size_type stoff;
2844 register char *out;
2845 asection *sec;
2846 bfd *sub;
2847 struct bfd_strtab_hash *debug_strtab;
2848 bfd_byte *debug_contents = NULL;
dc810e39 2849 bfd_size_type amt;
252b5132 2850
dc810e39
AM		 2851 if (bfd_get_flavour (output_bfd) != bfd_target_xcoff_flavour)
2852 {
dc810e39
AM		 2853 for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++)
2854 special_sections[i] = NULL;
b34976b6 2855 return TRUE;
dc810e39 2856 }
252b5132 2857
b34976b6 2858 ldinfo.failed = FALSE;
252b5132
RH		 2859 ldinfo.output_bfd = output_bfd;
2860 ldinfo.info = info;
2861 ldinfo.export_defineds = export_defineds;
2862 ldinfo.ldsym_count = 0;
2863 ldinfo.string_size = 0;
2864 ldinfo.strings = NULL;
2865 ldinfo.string_alc = 0;
2866
2867 xcoff_data (output_bfd)->maxstack = maxstack;
2868 xcoff_data (output_bfd)->maxdata = maxdata;
2869 xcoff_data (output_bfd)->modtype = modtype;
2870
2871 xcoff_hash_table (info)->file_align = file_align;
2872 xcoff_hash_table (info)->textro = textro;
2873
69f284c7
TR		 2874 hentry = NULL;
2875 if (entry != NULL)
dc810e39
AM		 2876 {
2877 hentry = xcoff_link_hash_lookup (xcoff_hash_table (info), entry,
b34976b6 2878 FALSE, FALSE, TRUE);
dc810e39
AM		 2879 if (hentry != NULL)
2880 hentry->flags |= XCOFF_ENTRY;
2881 }
beb1bf64
TR		 2882
2883 /* __rtinit */
b34976b6 2884 if (info->init_function || info->fini_function || rtld)
69f284c7
TR		 2885 {
2886 struct xcoff_link_hash_entry *hsym;
2887 struct internal_ldsym *ldsym;
b34976b6 2888
69f284c7 2889 hsym = xcoff_link_hash_lookup (xcoff_hash_table (info),
b34976b6 2890 "__rtinit", FALSE, FALSE, TRUE);
69f284c7
TR		 2891 if (hsym == NULL)
2892 {
2893 (*_bfd_error_handler)
2894 (_("error: undefined symbol __rtinit"));
b34976b6 2895 return FALSE;
69f284c7 2896 }
b34976b6 2897
69f284c7
TR		 2898 xcoff_mark_symbol (info, hsym);
2899 hsym->flags |= (XCOFF_DEF_REGULAR | XCOFF_RTINIT);
2900
7dee875e 2901 /* __rtinit initialized */
69f284c7
TR		 2902 amt = sizeof (struct internal_ldsym);
2903 ldsym = (struct internal_ldsym *) bfd_malloc (amt);
b34976b6
AM		 2904
2905 ldsym->l_value = 0; /* will be filled in later */
2906 ldsym->l_scnum = 2; /* data section */
2907 ldsym->l_smtype = XTY_SD; /* csect section definition */
2908 ldsym->l_smclas = 5; /* .rw */
2909 ldsym->l_ifile = 0; /* special system loader symbol */
2910 ldsym->l_parm = 0; /* NA */
2911
69f284c7
TR		 2912 /* Force __rtinit to be the first symbol in the loader symbol table
2913 See xcoff_build_ldsyms
b34976b6 2914
69f284c7
TR		 2915 The first 3 symbol table indices are reserved to indicate the data,
2916 text and bss sections. */
2917 BFD_ASSERT (0 == ldinfo.ldsym_count);
b34976b6 2918
69f284c7
TR		 2919 hsym->ldindx = 3;
2920 ldinfo.ldsym_count = 1;
2921 hsym->ldsym = ldsym;
b34976b6
AM		 2922
2923 if (! bfd_xcoff_put_ldsymbol_name (ldinfo.output_bfd, &ldinfo,
2924 hsym->ldsym, hsym->root.root.string))
2925 return FALSE;
2926
69f284c7
TR		 2927 /* This symbol is written out by xcoff_write_global_symbol
2928 Set stuff up so xcoff_write_global_symbol logic works. */
2929 hsym->flags |= XCOFF_DEF_REGULAR | XCOFF_MARK;
2930 hsym->root.type = bfd_link_hash_defined;
2931 hsym->root.u.def.value = 0;
2932 }
beb1bf64 2933
252b5132 2934 /* Garbage collect unused sections. */
1049f94e 2935 if (info->relocatable
252b5132
RH		 2936 || ! gc
2937 || hentry == NULL
2938 || (hentry->root.type != bfd_link_hash_defined
2939 && hentry->root.type != bfd_link_hash_defweak))
2940 {
b34976b6
AM		 2941 gc = FALSE;
2942 xcoff_hash_table (info)->gc = FALSE;
252b5132
RH		 2943
2944 /* We still need to call xcoff_mark, in order to set ldrel_count
b34976b6 2945 correctly. */
252b5132
RH		 2946 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
2947 {
2948 asection *o;
2949
2950 for (o = sub->sections; o != NULL; o = o->next)
2951 {
2952 if ((o->flags & SEC_MARK) == 0)
2953 {
2954 if (! xcoff_mark (info, o))
2955 goto error_return;
2956 }
2957 }
2958 }
2959 }
2960 else
2961 {
2962 if (! xcoff_mark (info, hentry->root.u.def.section))
2963 goto error_return;
2964 xcoff_sweep (info);
b34976b6 2965 xcoff_hash_table (info)->gc = TRUE;
252b5132
RH		 2966 }
2967
2968 /* Return special sections to the caller. */
dc810e39
AM		 2969 for (i = 0; i < XCOFF_NUMBER_OF_SPECIAL_SECTIONS; i++)
2970 {
2971 sec = xcoff_hash_table (info)->special_sections[i];
2972
2973 if (sec != NULL
2974 && gc
2975 && (sec->flags & SEC_MARK) == 0)
2976 {
2977 sec = NULL;
2978 }
2979 special_sections[i] = sec;
252b5132
RH		 2980 }
2981
dc810e39
AM		 2982 if (info->input_bfds == NULL)
2983 {
2984 /* I'm not sure what to do in this bizarre case. */
b34976b6 2985 return TRUE;
dc810e39 2986 }
252b5132
RH		 2987
2988 xcoff_link_hash_traverse (xcoff_hash_table (info), xcoff_build_ldsyms,
2989 (PTR) &ldinfo);
2990 if (ldinfo.failed)
2991 goto error_return;
2992
2993 /* Work out the size of the import file names. Each import file ID
2994 consists of three null terminated strings: the path, the file
2995 name, and the archive member name. The first entry in the list
2996 of names is the path to use to find objects, which the linker has
2997 passed in as the libpath argument. For some reason, the path
2998 entry in the other import file names appears to always be empty. */
2999 impsize = strlen (libpath) + 3;
3000 impcount = 1;
3001 for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next)
3002 {
3003 ++impcount;
3004 impsize += (strlen (fl->path)
3005 + strlen (fl->file)
3006 + strlen (fl->member)
3007 + 3);
3008 }
3009
3010 /* Set up the .loader section header. */
3011 ldhdr = &xcoff_hash_table (info)->ldhdr;
beb1bf64 3012 ldhdr->l_version = bfd_xcoff_ldhdr_version(output_bfd);
252b5132
RH		 3013 ldhdr->l_nsyms = ldinfo.ldsym_count;
3014 ldhdr->l_nreloc = xcoff_hash_table (info)->ldrel_count;
3015 ldhdr->l_istlen = impsize;
3016 ldhdr->l_nimpid = impcount;
beb1bf64
TR		 3017 ldhdr->l_impoff = (bfd_xcoff_ldhdrsz(output_bfd)
3018 + ldhdr->l_nsyms * bfd_xcoff_ldsymsz(output_bfd)
3019 + ldhdr->l_nreloc * bfd_xcoff_ldrelsz(output_bfd));
252b5132
RH		 3020 ldhdr->l_stlen = ldinfo.string_size;
3021 stoff = ldhdr->l_impoff + impsize;
3022 if (ldinfo.string_size == 0)
3023 ldhdr->l_stoff = 0;
3024 else
3025 ldhdr->l_stoff = stoff;
3026
dc810e39
AM		 3027 /* 64 bit elements to ldhdr
3028 The swap out routine for 32 bit will ignore them.
3029 Nothing fancy, symbols come after the header and relocs come
3030 after symbols. */
3031 ldhdr->l_symoff = bfd_xcoff_ldhdrsz (output_bfd);
3032 ldhdr->l_rldoff = (bfd_xcoff_ldhdrsz (output_bfd)
3033 + ldhdr->l_nsyms * bfd_xcoff_ldsymsz (output_bfd));
beb1bf64 3034
252b5132
RH		 3035 /* We now know the final size of the .loader section. Allocate
3036 space for it. */
3037 lsec = xcoff_hash_table (info)->loader_section;
3038 lsec->_raw_size = stoff + ldhdr->l_stlen;
3039 lsec->contents = (bfd_byte *) bfd_zalloc (output_bfd, lsec->_raw_size);
3040 if (lsec->contents == NULL)
3041 goto error_return;
3042
3043 /* Set up the header. */
beb1bf64 3044 bfd_xcoff_swap_ldhdr_out (output_bfd, ldhdr, lsec->contents);
252b5132
RH		 3045
3046 /* Set up the import file names. */
3047 out = (char *) lsec->contents + ldhdr->l_impoff;
3048 strcpy (out, libpath);
3049 out += strlen (libpath) + 1;
3050 *out++ = '\0';
3051 *out++ = '\0';
3052 for (fl = xcoff_hash_table (info)->imports; fl != NULL; fl = fl->next)
3053 {
3054 register const char *s;
3055
3056 s = fl->path;
3057 while ((*out++ = *s++) != '\0')
3058 ;
3059 s = fl->file;
3060 while ((*out++ = *s++) != '\0')
3061 ;
3062 s = fl->member;
3063 while ((*out++ = *s++) != '\0')
3064 ;
3065 }
3066
3067 BFD_ASSERT ((bfd_size_type) ((bfd_byte *) out - lsec->contents) == stoff);
3068
3069 /* Set up the symbol string table. */
3070 if (ldinfo.string_size > 0)
3071 {
3072 memcpy (out, ldinfo.strings, ldinfo.string_size);
3073 free (ldinfo.strings);
3074 ldinfo.strings = NULL;
3075 }
3076
3077 /* We can't set up the symbol table or the relocs yet, because we
3078 don't yet know the final position of the various sections. The
3079 .loader symbols are written out when the corresponding normal
3080 symbols are written out in xcoff_link_input_bfd or
3081 xcoff_write_global_symbol. The .loader relocs are written out
3082 when the corresponding normal relocs are handled in
dc810e39 3083 xcoff_link_input_bfd.
beb1bf64 3084 */
252b5132
RH		 3085
3086 /* Allocate space for the magic sections. */
3087 sec = xcoff_hash_table (info)->linkage_section;
3088 if (sec->_raw_size > 0)
3089 {
3090 sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
3091 if (sec->contents == NULL)
3092 goto error_return;
3093 }
3094 sec = xcoff_hash_table (info)->toc_section;
3095 if (sec->_raw_size > 0)
3096 {
3097 sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
3098 if (sec->contents == NULL)
3099 goto error_return;
3100 }
3101 sec = xcoff_hash_table (info)->descriptor_section;
3102 if (sec->_raw_size > 0)
3103 {
3104 sec->contents = (bfd_byte *) bfd_zalloc (output_bfd, sec->_raw_size);
3105 if (sec->contents == NULL)
3106 goto error_return;
3107 }
3108
3109 /* Now that we've done garbage collection, figure out the contents
3110 of the .debug section. */
3111 debug_strtab = xcoff_hash_table (info)->debug_strtab;
3112
3113 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
3114 {
3115 asection *subdeb;
3116 bfd_size_type symcount;
3117 unsigned long *debug_index;
3118 asection **csectpp;
3119 bfd_byte *esym, *esymend;
3120 bfd_size_type symesz;
3121
3122 if (sub->xvec != info->hash->creator)
3123 continue;
3124 subdeb = bfd_get_section_by_name (sub, ".debug");
3125 if (subdeb == NULL || subdeb->_raw_size == 0)
3126 continue;
3127
3128 if (info->strip == strip_all
3129 || info->strip == strip_debugger
3130 || info->discard == discard_all)
3131 {
3132 subdeb->_raw_size = 0;
3133 continue;
3134 }
3135
3136 if (! _bfd_coff_get_external_symbols (sub))
3137 goto error_return;
3138
3139 symcount = obj_raw_syment_count (sub);
3140 debug_index = ((unsigned long *)
3141 bfd_zalloc (sub, symcount * sizeof (unsigned long)));
3142 if (debug_index == NULL)
3143 goto error_return;
3144 xcoff_data (sub)->debug_indices = debug_index;
3145
3146 /* Grab the contents of the .debug section. We use malloc and
3147 copy the names into the debug stringtab, rather than
3148 bfd_alloc, because I expect that, when linking many files
3149 together, many of the strings will be the same. Storing the
3150 strings in the hash table should save space in this case. */
3151 debug_contents = (bfd_byte *) bfd_malloc (subdeb->_raw_size);
3152 if (debug_contents == NULL)
3153 goto error_return;
3154 if (! bfd_get_section_contents (sub, subdeb, (PTR) debug_contents,
3155 (file_ptr) 0, subdeb->_raw_size))
3156 goto error_return;
3157
3158 csectpp = xcoff_data (sub)->csects;
3159
eb1e0e80 3160 /* Dynamic object do not have csectpp's. */
b34976b6 3161 if (NULL != csectpp)
252b5132 3162 {
eb1e0e80
NC		 3163 symesz = bfd_coff_symesz (sub);
3164 esym = (bfd_byte *) obj_coff_external_syms (sub);
3165 esymend = esym + symcount * symesz;
252b5132 3166
eb1e0e80
NC		 3167 while (esym < esymend)
3168 {
3169 struct internal_syment sym;
252b5132 3170
eb1e0e80 3171 bfd_coff_swap_sym_in (sub, (PTR) esym, (PTR) &sym);
252b5132 3172
eb1e0e80 3173 *debug_index = (unsigned long) -1;
252b5132 3174
eb1e0e80
NC		 3175 if (sym._n._n_n._n_zeroes == 0
3176 && *csectpp != NULL
3177 && (! gc
3178 || ((*csectpp)->flags & SEC_MARK) != 0
3179 || *csectpp == bfd_abs_section_ptr)
3180 && bfd_coff_symname_in_debug (sub, &sym))
3181 {
3182 char *name;
3183 bfd_size_type indx;
252b5132 3184
eb1e0e80 3185 name = (char *) debug_contents + sym._n._n_n._n_offset;
b34976b6 3186 indx = _bfd_stringtab_add (debug_strtab, name, TRUE, TRUE);
eb1e0e80
NC		 3187 if (indx == (bfd_size_type) -1)
3188 goto error_return;
3189 *debug_index = indx;
3190 }
3191
3192 esym += (sym.n_numaux + 1) * symesz;
3193 csectpp += sym.n_numaux + 1;
3194 debug_index += sym.n_numaux + 1;
3195 }
252b5132
RH		 3196 }
3197
3198 free (debug_contents);
3199 debug_contents = NULL;
3200
3201 /* Clear the size of subdeb, so that it is not included directly
3202 in the output file. */
3203 subdeb->_raw_size = 0;
3204
3205 if (! info->keep_memory)
3206 {
3207 if (! _bfd_coff_free_symbols (sub))
3208 goto error_return;
3209 }
3210 }
3211
3212 if (info->strip != strip_all)
3213 xcoff_hash_table (info)->debug_section->_raw_size =
3214 _bfd_stringtab_size (debug_strtab);
3215
b34976b6 3216 return TRUE;
252b5132
RH		 3217
3218 error_return:
3219 if (ldinfo.strings != NULL)
3220 free (ldinfo.strings);
3221 if (debug_contents != NULL)
3222 free (debug_contents);
b34976b6 3223 return FALSE;
252b5132
RH		 3224}
3225
b34976b6 3226bfd_boolean
69f284c7 3227bfd_xcoff_link_generate_rtinit (abfd, init, fini, rtld)
9a4c7f16
TR		 3228 bfd *abfd;
3229 const char *init;
3230 const char *fini;
b34976b6 3231 bfd_boolean rtld;
9a4c7f16
TR		 3232{
3233 struct bfd_in_memory *bim;
b34976b6 3234
9a4c7f16
TR		 3235 bim = ((struct bfd_in_memory *)
3236 bfd_malloc ((bfd_size_type) sizeof (struct bfd_in_memory)));
3237 if (bim == NULL)
b34976b6 3238 return FALSE;
9a4c7f16
TR		 3239
3240 bim->size = 0;
3241 bim->buffer = 0;
3242
3243 abfd->link_next = 0;
3244 abfd->format = bfd_object;
3245 abfd->iostream = (PTR) bim;
3246 abfd->flags = BFD_IN_MEMORY;
3247 abfd->direction = write_direction;
3248 abfd->where = 0;
3249
b34976b6
AM		 3250 if (! bfd_xcoff_generate_rtinit (abfd, init, fini, rtld))
3251 return FALSE;
9a4c7f16
TR		 3252
3253 /* need to reset to unknown or it will not be read back in correctly */
3254 abfd->format = bfd_unknown;
3255 abfd->direction = read_direction;
3256 abfd->where = 0;
3257
b34976b6 3258 return TRUE;
9a4c7f16
TR		 3259}
3260
3261
252b5132
RH		 3262/* Add a symbol to the .loader symbols, if necessary. */
3263
b34976b6 3264static bfd_boolean
252b5132
RH		 3265xcoff_build_ldsyms (h, p)
3266 struct xcoff_link_hash_entry *h;
3267 PTR p;
3268{
3269 struct xcoff_loader_info *ldinfo = (struct xcoff_loader_info *) p;
dc810e39 3270 bfd_size_type amt;
252b5132 3271
e92d460e
AM		 3272 if (h->root.type == bfd_link_hash_warning)
3273 h = (struct xcoff_link_hash_entry *) h->root.u.i.link;
3274
69f284c7 3275 /* __rtinit, this symbol has special handling. */
dc810e39 3276 if (h->flags & XCOFF_RTINIT)
b34976b6 3277 return TRUE;
dc810e39
AM		 3278
3279 /* If this is a final link, and the symbol was defined as a common
252b5132
RH		 3280 symbol in a regular object file, and there was no definition in
3281 any dynamic object, then the linker will have allocated space for
3282 the symbol in a common section but the XCOFF_DEF_REGULAR flag
3283 will not have been set. */
3284 if (h->root.type == bfd_link_hash_defined
3285 && (h->flags & XCOFF_DEF_REGULAR) == 0
3286 && (h->flags & XCOFF_REF_REGULAR) != 0
3287 && (h->flags & XCOFF_DEF_DYNAMIC) == 0
3288 && (bfd_is_abs_section (h->root.u.def.section)
3289 || (h->root.u.def.section->owner->flags & DYNAMIC) == 0))
3290 h->flags |= XCOFF_DEF_REGULAR;
3291
3292 /* If all defined symbols should be exported, mark them now. We
3293 don't want to export the actual functions, just the function
3294 descriptors. */
3295 if (ldinfo->export_defineds
3296 && (h->flags & XCOFF_DEF_REGULAR) != 0
3297 && h->root.root.string[0] != '.')
3298 {
b34976b6 3299 bfd_boolean export;
252b5132
RH		 3300
3301 /* We don't export a symbol which is being defined by an object
3302 included from an archive which contains a shared object. The
3303 rationale is that if an archive contains both an unshared and
3304 a shared object, then there must be some reason that the
3305 unshared object is unshared, and we don't want to start
3306 providing a shared version of it. In particular, this solves
3307 a bug involving the _savefNN set of functions. gcc will call
3308 those functions without providing a slot to restore the TOC,
3309 so it is essential that these functions be linked in directly
3310 and not from a shared object, which means that a shared
3311 object which also happens to link them in must not export
3312 them. This is confusing, but I haven't been able to think of
3313 a different approach. Note that the symbols can, of course,
3314 be exported explicitly. */
b34976b6 3315 export = TRUE;
252b5132
RH		 3316 if ((h->root.type == bfd_link_hash_defined
3317 || h->root.type == bfd_link_hash_defweak)
3318 && h->root.u.def.section->owner != NULL
3319 && h->root.u.def.section->owner->my_archive != NULL)
3320 {
3321 bfd *arbfd, *member;
3322
3323 arbfd = h->root.u.def.section->owner->my_archive;
3324 member = bfd_openr_next_archived_file (arbfd, (bfd *) NULL);
3325 while (member != NULL)
3326 {
3327 if ((member->flags & DYNAMIC) != 0)
3328 {
b34976b6 3329 export = FALSE;
252b5132
RH		 3330 break;
3331 }
3332 member = bfd_openr_next_archived_file (arbfd, member);
3333 }
3334 }
3335
3336 if (export)
3337 h->flags |= XCOFF_EXPORT;
3338 }
3339
3340 /* We don't want to garbage collect symbols which are not defined in
3341 XCOFF files. This is a convenient place to mark them. */
3342 if (xcoff_hash_table (ldinfo->info)->gc
3343 && (h->flags & XCOFF_MARK) == 0
3344 && (h->root.type == bfd_link_hash_defined
3345 || h->root.type == bfd_link_hash_defweak)
3346 && (h->root.u.def.section->owner == NULL
3347 || (h->root.u.def.section->owner->xvec
3348 != ldinfo->info->hash->creator)))
3349 h->flags |= XCOFF_MARK;
3350
3351 /* If this symbol is called and defined in a dynamic object, or it
3352 is imported, then we need to set up global linkage code for it.
3353 (Unless we did garbage collection and we didn't need this
3354 symbol.) */
3355 if ((h->flags & XCOFF_CALLED) != 0
3356 && (h->root.type == bfd_link_hash_undefined
3357 || h->root.type == bfd_link_hash_undefweak)
3358 && h->root.root.string[0] == '.'
3359 && h->descriptor != NULL
3360 && ((h->descriptor->flags & XCOFF_DEF_DYNAMIC) != 0
3361 || ((h->descriptor->flags & XCOFF_IMPORT) != 0
3362 && (h->descriptor->flags & XCOFF_DEF_REGULAR) == 0))
3363 && (! xcoff_hash_table (ldinfo->info)->gc
3364 || (h->flags & XCOFF_MARK) != 0))
3365 {
3366 asection *sec;
3367 struct xcoff_link_hash_entry *hds;
3368
3369 sec = xcoff_hash_table (ldinfo->info)->linkage_section;
3370 h->root.type = bfd_link_hash_defined;
3371 h->root.u.def.section = sec;
3372 h->root.u.def.value = sec->_raw_size;
3373 h->smclas = XMC_GL;
3374 h->flags |= XCOFF_DEF_REGULAR;
beb1bf64 3375 sec->_raw_size += bfd_xcoff_glink_code_size(ldinfo->output_bfd);
252b5132
RH		 3376
3377 /* The global linkage code requires a TOC entry for the
b34976b6 3378 descriptor. */
252b5132
RH		 3379 hds = h->descriptor;
3380 BFD_ASSERT ((hds->root.type == bfd_link_hash_undefined
3381 || hds->root.type == bfd_link_hash_undefweak)
3382 && (hds->flags & XCOFF_DEF_REGULAR) == 0);
3383 hds->flags |= XCOFF_MARK;
dc810e39
AM		 3384 if (hds->toc_section == NULL)
3385 {
3386 int byte_size;
beb1bf64 3387
dc810e39
AM		 3388 /* 32 vs 64
3389 xcoff32 uses 4 bytes in the toc.
3390 xcoff64 uses 8 bytes in the toc. */
3391 if (bfd_xcoff_is_xcoff64 (ldinfo->output_bfd))
69f284c7 3392 byte_size = 8;
dc810e39 3393 else if (bfd_xcoff_is_xcoff32 (ldinfo->output_bfd))
69f284c7 3394 byte_size = 4;
dc810e39 3395 else
b34976b6 3396 return FALSE;
dc810e39
AM		 3397
3398 hds->toc_section = xcoff_hash_table (ldinfo->info)->toc_section;
3399 hds->u.toc_offset = hds->toc_section->_raw_size;
3400 hds->toc_section->_raw_size += byte_size;
3401 ++xcoff_hash_table (ldinfo->info)->ldrel_count;
3402 ++hds->toc_section->reloc_count;
3403 hds->indx = -2;
3404 hds->flags |= XCOFF_SET_TOC | XCOFF_LDREL;
3405
3406 /* We need to call xcoff_build_ldsyms recursively here,
3407 because we may already have passed hds on the traversal. */
3408 xcoff_build_ldsyms (hds, p);
3409 }
252b5132
RH		 3410 }
3411
3412 /* If this symbol is exported, but not defined, we need to try to
3413 define it. */
3414 if ((h->flags & XCOFF_EXPORT) != 0
3415 && (h->flags & XCOFF_IMPORT) == 0
3416 && (h->flags & XCOFF_DEF_REGULAR) == 0
3417 && (h->flags & XCOFF_DEF_DYNAMIC) == 0
3418 && (h->root.type == bfd_link_hash_undefined
3419 || h->root.type == bfd_link_hash_undefweak))
3420 {
3421 if ((h->flags & XCOFF_DESCRIPTOR) != 0
3422 && (h->descriptor->root.type == bfd_link_hash_defined
3423 || h->descriptor->root.type == bfd_link_hash_defweak))
3424 {
3425 asection *sec;
3426
3427 /* This is an undefined function descriptor associated with
b34976b6
AM		 3428 a defined entry point. We can build up a function
3429 descriptor ourselves. Believe it or not, the AIX linker
3430 actually does this, and there are cases where we need to
3431 do it as well. */
252b5132
RH		 3432 sec = xcoff_hash_table (ldinfo->info)->descriptor_section;
3433 h->root.type = bfd_link_hash_defined;
3434 h->root.u.def.section = sec;
3435 h->root.u.def.value = sec->_raw_size;
3436 h->smclas = XMC_DS;
3437 h->flags |= XCOFF_DEF_REGULAR;
252b5132 3438
dc810e39
AM		 3439 /* The size of the function descriptor depends if this is an
3440 xcoff32 (12) or xcoff64 (24). */
3441 sec->_raw_size +=
beb1bf64
TR		 3442 bfd_xcoff_function_descriptor_size(ldinfo->output_bfd);
3443
dc810e39
AM		 3444 /* A function descriptor uses two relocs: one for the
3445 associated code, and one for the TOC address. */
252b5132
RH		 3446 xcoff_hash_table (ldinfo->info)->ldrel_count += 2;
3447 sec->reloc_count += 2;
3448
dc810e39
AM		 3449 /* We handle writing out the contents of the descriptor in
3450 xcoff_write_global_symbol. */
252b5132
RH		 3451 }
3452 else
3453 {
3454 (*_bfd_error_handler)
3455 (_("warning: attempt to export undefined symbol `%s'"),
3456 h->root.root.string);
3457 h->ldsym = NULL;
b34976b6 3458 return TRUE;
252b5132
RH		 3459 }
3460 }
3461
3462 /* If this is still a common symbol, and it wasn't garbage
3463 collected, we need to actually allocate space for it in the .bss
3464 section. */
3465 if (h->root.type == bfd_link_hash_common
3466 && (! xcoff_hash_table (ldinfo->info)->gc
3467 || (h->flags & XCOFF_MARK) != 0)
3468 && h->root.u.c.p->section->_raw_size == 0)
3469 {
3470 BFD_ASSERT (bfd_is_com_section (h->root.u.c.p->section));
3471 h->root.u.c.p->section->_raw_size = h->root.u.c.size;
3472 }
3473
3474 /* We need to add a symbol to the .loader section if it is mentioned
3475 in a reloc which we are copying to the .loader section and it was
3476 not defined or common, or if it is the entry point, or if it is
3477 being exported. */
3478
3479 if (((h->flags & XCOFF_LDREL) == 0
3480 || h->root.type == bfd_link_hash_defined
3481 || h->root.type == bfd_link_hash_defweak
3482 || h->root.type == bfd_link_hash_common)
3483 && (h->flags & XCOFF_ENTRY) == 0
3484 && (h->flags & XCOFF_EXPORT) == 0)
3485 {
3486 h->ldsym = NULL;
b34976b6 3487 return TRUE;
252b5132
RH		 3488 }
3489
3490 /* We don't need to add this symbol if we did garbage collection and
3491 we did not mark this symbol. */
3492 if (xcoff_hash_table (ldinfo->info)->gc
3493 && (h->flags & XCOFF_MARK) == 0)
3494 {
3495 h->ldsym = NULL;
b34976b6 3496 return TRUE;
252b5132
RH		 3497 }
3498
3499 /* We may have already processed this symbol due to the recursive
3500 call above. */
3501 if ((h->flags & XCOFF_BUILT_LDSYM) != 0)
b34976b6 3502 return TRUE;
252b5132
RH		 3503
3504 /* We need to add this symbol to the .loader symbols. */
3505
3506 BFD_ASSERT (h->ldsym == NULL);
dc810e39
AM		 3507 amt = sizeof (struct internal_ldsym);
3508 h->ldsym = (struct internal_ldsym *) bfd_zalloc (ldinfo->output_bfd, amt);
252b5132
RH		 3509 if (h->ldsym == NULL)
3510 {
b34976b6
AM		 3511 ldinfo->failed = TRUE;
3512 return FALSE;
252b5132
RH		 3513 }
3514
3515 if ((h->flags & XCOFF_IMPORT) != 0)
3516 h->ldsym->l_ifile = h->ldindx;
3517
dc810e39
AM		 3518 /* The first 3 symbol table indices are reserved to indicate the
3519 data, text and bss sections. */
252b5132
RH		 3520 h->ldindx = ldinfo->ldsym_count + 3;
3521
3522 ++ldinfo->ldsym_count;
3523
b34976b6
AM		 3524 if (! bfd_xcoff_put_ldsymbol_name (ldinfo->output_bfd, ldinfo,
3525 h->ldsym, h->root.root.string))
dc810e39 3526 {
b34976b6 3527 return FALSE;
dc810e39 3528 }
252b5132
RH		 3529
3530 h->flags |= XCOFF_BUILT_LDSYM;
3531
b34976b6 3532 return TRUE;
252b5132
RH		 3533}
3534\f
3535/* Do the final link step. */
3536
b34976b6 3537bfd_boolean
252b5132
RH		 3538_bfd_xcoff_bfd_final_link (abfd, info)
3539 bfd *abfd;
3540 struct bfd_link_info *info;
3541{
3542 bfd_size_type symesz;
3543 struct xcoff_final_link_info finfo;
3544 asection *o;
3545 struct bfd_link_order *p;
dc810e39
AM		 3546 bfd_size_type max_contents_size;
3547 bfd_size_type max_sym_count;
3548 bfd_size_type max_lineno_count;
3549 bfd_size_type max_reloc_count;
3550 bfd_size_type max_output_reloc_count;
252b5132
RH		 3551 file_ptr rel_filepos;
3552 unsigned int relsz;
3553 file_ptr line_filepos;
3554 unsigned int linesz;
3555 bfd *sub;
3556 bfd_byte *external_relocs = NULL;
3557 char strbuf[STRING_SIZE_SIZE];
dc810e39
AM		 3558 file_ptr pos;
3559 bfd_size_type amt;
252b5132
RH		 3560
3561 if (info->shared)
3562 abfd->flags |= DYNAMIC;
3563
3564 symesz = bfd_coff_symesz (abfd);
3565
3566 finfo.info = info;
3567 finfo.output_bfd = abfd;
3568 finfo.strtab = NULL;
3569 finfo.section_info = NULL;
3570 finfo.last_file_index = -1;
3571 finfo.toc_symindx = -1;
3572 finfo.internal_syms = NULL;
3573 finfo.sym_indices = NULL;
3574 finfo.outsyms = NULL;
3575 finfo.linenos = NULL;
3576 finfo.contents = NULL;
3577 finfo.external_relocs = NULL;
3578
dc810e39
AM		 3579 finfo.ldsym = (xcoff_hash_table (info)->loader_section->contents
3580 + bfd_xcoff_ldhdrsz (abfd));
3581 finfo.ldrel = (xcoff_hash_table (info)->loader_section->contents
3582 + bfd_xcoff_ldhdrsz(abfd)
3583 + (xcoff_hash_table (info)->ldhdr.l_nsyms
3584 * bfd_xcoff_ldsymsz(abfd)));
252b5132
RH		 3585
3586 xcoff_data (abfd)->coff.link_info = info;
3587
3588 finfo.strtab = _bfd_stringtab_init ();
3589 if (finfo.strtab == NULL)
3590 goto error_return;
3591
3592 /* Count the line number and relocation entries required for the
3593 output file. Determine a few maximum sizes. */
3594 max_contents_size = 0;
3595 max_lineno_count = 0;
3596 max_reloc_count = 0;
3597 for (o = abfd->sections; o != NULL; o = o->next)
3598 {
3599 o->reloc_count = 0;
3600 o->lineno_count = 0;
3601 for (p = o->link_order_head; p != NULL; p = p->next)
3602 {
3603 if (p->type == bfd_indirect_link_order)
3604 {
3605 asection *sec;
3606
3607 sec = p->u.indirect.section;
3608
3609 /* Mark all sections which are to be included in the
3610 link. This will normally be every section. We need
3611 to do this so that we can identify any sections which
3612 the linker has decided to not include. */
b34976b6 3613 sec->linker_mark = TRUE;
252b5132
RH		 3614
3615 if (info->strip == strip_none
3616 || info->strip == strip_some)
3617 o->lineno_count += sec->lineno_count;
3618
3619 o->reloc_count += sec->reloc_count;
3620
3621 if (sec->_raw_size > max_contents_size)
3622 max_contents_size = sec->_raw_size;
3623 if (sec->lineno_count > max_lineno_count)
3624 max_lineno_count = sec->lineno_count;
3625 if (coff_section_data (sec->owner, sec) != NULL
3626 && xcoff_section_data (sec->owner, sec) != NULL
3627 && (xcoff_section_data (sec->owner, sec)->lineno_count
3628 > max_lineno_count))
3629 max_lineno_count =
3630 xcoff_section_data (sec->owner, sec)->lineno_count;
3631 if (sec->reloc_count > max_reloc_count)
3632 max_reloc_count = sec->reloc_count;
3633 }
3634 else if (p->type == bfd_section_reloc_link_order
3635 || p->type == bfd_symbol_reloc_link_order)
3636 ++o->reloc_count;
3637 }
3638 }
3639
3640 /* Compute the file positions for all the sections. */
3641 if (abfd->output_has_begun)
3642 {
3643 if (xcoff_hash_table (info)->file_align != 0)
3644 abort ();
3645 }
3646 else
3647 {
3648 bfd_vma file_align;
3649
3650 file_align = xcoff_hash_table (info)->file_align;
3651 if (file_align != 0)
3652 {
b34976b6 3653 bfd_boolean saw_contents;
252b5132 3654 int indx;
9e7b37b3 3655 asection **op;
252b5132 3656 file_ptr sofar;
b34976b6 3657
252b5132 3658 /* Insert .pad sections before every section which has
b34976b6
AM		 3659 contents and is loaded, if it is preceded by some other
3660 section which has contents and is loaded. */
3661 saw_contents = TRUE;
9e7b37b3 3662 for (op = &abfd->sections; *op != NULL; op = &(*op)->next)
252b5132
RH		 3663 {
3664 if (strcmp ((*op)->name, ".pad") == 0)
b34976b6 3665 saw_contents = FALSE;
252b5132
RH		 3666 else if (((*op)->flags & SEC_HAS_CONTENTS) != 0
3667 && ((*op)->flags & SEC_LOAD) != 0)
3668 {
3669 if (! saw_contents)
b34976b6 3670 saw_contents = TRUE;
252b5132
RH		 3671 else
3672 {
9e7b37b3 3673 asection *n, **st;
b34976b6 3674
04b5af89 3675 /* Create a pad section and place it before the section
b34976b6 3676 that needs padding. This requires unlinking and
9e7b37b3 3677 relinking the bfd's section list. */
b34976b6 3678
04b5af89 3679 st = abfd->section_tail;
252b5132 3680 n = bfd_make_section_anyway (abfd, ".pad");
252b5132 3681 n->flags = SEC_HAS_CONTENTS;
b34976b6 3682 n->alignment_power = 0;
04b5af89 3683
9e7b37b3
AM		 3684 BFD_ASSERT (*st == n);
3685 bfd_section_list_remove (abfd, st);
3686 bfd_section_list_insert (abfd, op, n);
3687
3688 op = &n->next;
b34976b6 3689 saw_contents = FALSE;
252b5132
RH		 3690 }
3691 }
3692 }
b34976b6 3693
252b5132 3694 /* Reset the section indices after inserting the new
b34976b6 3695 sections. */
252b5132
RH		 3696 indx = 0;
3697 for (o = abfd->sections; o != NULL; o = o->next)
3698 {
3699 ++indx;
3700 o->target_index = indx;
3701 }
3702 BFD_ASSERT ((unsigned int) indx == abfd->section_count);
3703
3704 /* Work out appropriate sizes for the .pad sections to force
b34976b6
AM		 3705 each section to land on a page boundary. This bit of
3706 code knows what compute_section_file_positions is going
3707 to do. */
252b5132
RH		 3708 sofar = bfd_coff_filhsz (abfd);
3709 sofar += bfd_coff_aoutsz (abfd);
3710 sofar += abfd->section_count * bfd_coff_scnhsz (abfd);
dc810e39
AM		 3711 for (o = abfd->sections; o != NULL; o = o->next)
3712 if ((bfd_xcoff_is_reloc_count_overflow
3713 (abfd, (bfd_vma) o->reloc_count))
3714 || (bfd_xcoff_is_lineno_count_overflow
3715 (abfd, (bfd_vma) o->lineno_count)))
beb1bf64
TR		 3716 /* 64 does not overflow, need to check if 32 does */
3717 sofar += bfd_coff_scnhsz (abfd);
dc810e39 3718
252b5132
RH		 3719 for (o = abfd->sections; o != NULL; o = o->next)
3720 {
3721 if (strcmp (o->name, ".pad") == 0)
3722 {
3723 bfd_vma pageoff;
3724
3725 BFD_ASSERT (o->_raw_size == 0);
3726 pageoff = sofar & (file_align - 1);
3727 if (pageoff != 0)
3728 {
3729 o->_raw_size = file_align - pageoff;
3730 sofar += file_align - pageoff;
3731 o->flags |= SEC_HAS_CONTENTS;
3732 }
3733 }
3734 else
3735 {
3736 if ((o->flags & SEC_HAS_CONTENTS) != 0)
3737 sofar += BFD_ALIGN (o->_raw_size,
3738 1 << o->alignment_power);
3739 }
3740 }
3741 }
3742
3743 if (! bfd_coff_compute_section_file_positions (abfd))
3744 goto error_return;
3745 }
3746
3747 /* Allocate space for the pointers we need to keep for the relocs. */
3748 {
3749 unsigned int i;
3750
3751 /* We use section_count + 1, rather than section_count, because
3752 the target_index fields are 1 based. */
dc810e39
AM		 3753 amt = abfd->section_count + 1;
3754 amt *= sizeof (struct xcoff_link_section_info);
3755 finfo.section_info = (struct xcoff_link_section_info *) bfd_malloc (amt);
252b5132
RH		 3756 if (finfo.section_info == NULL)
3757 goto error_return;
3758 for (i = 0; i <= abfd->section_count; i++)
3759 {
3760 finfo.section_info[i].relocs = NULL;
3761 finfo.section_info[i].rel_hashes = NULL;
3762 finfo.section_info[i].toc_rel_hashes = NULL;
3763 }
3764 }
3765
3766 /* Set the file positions for the relocs. */
3767 rel_filepos = obj_relocbase (abfd);
3768 relsz = bfd_coff_relsz (abfd);
3769 max_output_reloc_count = 0;
3770 for (o = abfd->sections; o != NULL; o = o->next)
3771 {
3772 if (o->reloc_count == 0)
3773 o->rel_filepos = 0;
3774 else
3775 {
3776 /* A stripped file has no relocs. However, we still
b34976b6
AM		 3777 allocate the buffers, so that later code doesn't have to
3778 worry about whether we are stripping or not. */
252b5132
RH		 3779 if (info->strip == strip_all)
3780 o->rel_filepos = 0;
3781 else
3782 {
3783 o->flags |= SEC_RELOC;
3784 o->rel_filepos = rel_filepos;
3785 rel_filepos += o->reloc_count * relsz;
3786 }
3787
3788 /* We don't know the indices of global symbols until we have
b34976b6
AM		 3789 written out all the local symbols. For each section in
3790 the output file, we keep an array of pointers to hash
3791 table entries. Each entry in the array corresponds to a
3792 reloc. When we find a reloc against a global symbol, we
3793 set the corresponding entry in this array so that we can
3794 fix up the symbol index after we have written out all the
3795 local symbols.
252b5132
RH		 3796
3797 Because of this problem, we also keep the relocs in
3798 memory until the end of the link. This wastes memory.
3799 We could backpatch the file later, I suppose, although it
3800 would be slow. */
dc810e39
AM		 3801 amt = o->reloc_count;
3802 amt *= sizeof (struct internal_reloc);
252b5132 3803 finfo.section_info[o->target_index].relocs =
dc810e39
AM		 3804 (struct internal_reloc *) bfd_malloc (amt);
3805
3806 amt = o->reloc_count;
3807 amt *= sizeof (struct xcoff_link_hash_entry *);
252b5132 3808 finfo.section_info[o->target_index].rel_hashes =
dc810e39
AM		 3809 (struct xcoff_link_hash_entry **) bfd_malloc (amt);
3810
252b5132
RH		 3811 if (finfo.section_info[o->target_index].relocs == NULL
3812 || finfo.section_info[o->target_index].rel_hashes == NULL)
3813 goto error_return;
3814
3815 if (o->reloc_count > max_output_reloc_count)
3816 max_output_reloc_count = o->reloc_count;
3817 }
3818 }
3819
3820 /* We now know the size of the relocs, so we can determine the file
3821 positions of the line numbers. */
3822 line_filepos = rel_filepos;
3823 finfo.line_filepos = line_filepos;
3824 linesz = bfd_coff_linesz (abfd);
3825 for (o = abfd->sections; o != NULL; o = o->next)
3826 {
3827 if (o->lineno_count == 0)
3828 o->line_filepos = 0;
3829 else
3830 {
3831 o->line_filepos = line_filepos;
3832 line_filepos += o->lineno_count * linesz;
3833 }
3834
3835 /* Reset the reloc and lineno counts, so that we can use them to
3836 count the number of entries we have output so far. */
3837 o->reloc_count = 0;
3838 o->lineno_count = 0;
3839 }
3840
3841 obj_sym_filepos (abfd) = line_filepos;
3842
3843 /* Figure out the largest number of symbols in an input BFD. Take
3844 the opportunity to clear the output_has_begun fields of all the
3845 input BFD's. We want at least 6 symbols, since that is the
3846 number which xcoff_write_global_symbol may need. */
3847 max_sym_count = 6;
3848 for (sub = info->input_bfds; sub != NULL; sub = sub->link_next)
3849 {
dc810e39 3850 bfd_size_type sz;
252b5132 3851
b34976b6 3852 sub->output_has_begun = FALSE;
252b5132
RH		 3853 sz = obj_raw_syment_count (sub);
3854 if (sz > max_sym_count)
3855 max_sym_count = sz;
3856 }
3857
3858 /* Allocate some buffers used while linking. */
dc810e39
AM		 3859 amt = max_sym_count * sizeof (struct internal_syment);
3860 finfo.internal_syms = (struct internal_syment *) bfd_malloc (amt);
3861
3862 amt = max_sym_count * sizeof (long);
3863 finfo.sym_indices = (long *) bfd_malloc (amt);
3864
3865 amt = (max_sym_count + 1) * symesz;
3866 finfo.outsyms = (bfd_byte *) bfd_malloc (amt);
3867
3868 amt = max_lineno_count * bfd_coff_linesz (abfd);
3869 finfo.linenos = (bfd_byte *) bfd_malloc (amt);
3870
3871 amt = max_contents_size;
3872 finfo.contents = (bfd_byte *) bfd_malloc (amt);
3873
3874 amt = max_reloc_count * relsz;
3875 finfo.external_relocs = (bfd_byte *) bfd_malloc (amt);
3876
252b5132
RH		 3877 if ((finfo.internal_syms == NULL && max_sym_count > 0)
3878 || (finfo.sym_indices == NULL && max_sym_count > 0)
3879 || finfo.outsyms == NULL
3880 || (finfo.linenos == NULL && max_lineno_count > 0)
3881 || (finfo.contents == NULL && max_contents_size > 0)
3882 || (finfo.external_relocs == NULL && max_reloc_count > 0))
3883 goto error_return;
3884
3885 obj_raw_syment_count (abfd) = 0;
3886 xcoff_data (abfd)->toc = (bfd_vma) -1;
3887
3888 /* We now know the position of everything in the file, except that
3889 we don't know the size of the symbol table and therefore we don't
3890 know where the string table starts. We just build the string
3891 table in memory as we go along. We process all the relocations
3892 for a single input file at once. */
3893 for (o = abfd->sections; o != NULL; o = o->next)
3894 {
3895 for (p = o->link_order_head; p != NULL; p = p->next)
3896 {
3897 if (p->type == bfd_indirect_link_order
3898 && p->u.indirect.section->owner->xvec == abfd->xvec)
3899 {
3900 sub = p->u.indirect.section->owner;
3901 if (! sub->output_has_begun)
3902 {
3903 if (! xcoff_link_input_bfd (&finfo, sub))
3904 goto error_return;
b34976b6 3905 sub->output_has_begun = TRUE;
252b5132
RH		 3906 }
3907 }
3908 else if (p->type == bfd_section_reloc_link_order
3909 || p->type == bfd_symbol_reloc_link_order)
3910 {
3911 if (! xcoff_reloc_link_order (abfd, &finfo, o, p))
3912 goto error_return;
3913 }
3914 else
3915 {
3916 if (! _bfd_default_link_order (abfd, info, o, p))
3917 goto error_return;
3918 }
3919 }
3920 }
3921
beb1bf64 3922
252b5132
RH		 3923 /* Free up the buffers used by xcoff_link_input_bfd. */
3924
dc810e39
AM		 3925 if (finfo.internal_syms != NULL)
3926 {
3927 free (finfo.internal_syms);
3928 finfo.internal_syms = NULL;
3929 }
3930 if (finfo.sym_indices != NULL)
3931 {
3932 free (finfo.sym_indices);
3933 finfo.sym_indices = NULL;
3934 }
3935 if (finfo.linenos != NULL)
3936 {
3937 free (finfo.linenos);
3938 finfo.linenos = NULL;
3939 }
3940 if (finfo.contents != NULL)
3941 {
3942 free (finfo.contents);
3943 finfo.contents = NULL;
3944 }
3945 if (finfo.external_relocs != NULL)
3946 {
3947 free (finfo.external_relocs);
3948 finfo.external_relocs = NULL;
3949 }
252b5132
RH		 3950
3951 /* The value of the last C_FILE symbol is supposed to be -1. Write
3952 it out again. */
dc810e39
AM		 3953 if (finfo.last_file_index != -1)
3954 {
3955 finfo.last_file.n_value = -(bfd_vma) 1;
3956 bfd_coff_swap_sym_out (abfd, (PTR) &finfo.last_file,
3957 (PTR) finfo.outsyms);
3958 pos = obj_sym_filepos (abfd) + finfo.last_file_index * symesz;
3959 if (bfd_seek (abfd, pos, SEEK_SET) != 0
3960 || bfd_bwrite (finfo.outsyms, symesz, abfd) != symesz)
3961 goto error_return;
3962 }
beb1bf64 3963
252b5132
RH		 3964 /* Write out all the global symbols which do not come from XCOFF
3965 input files. */
3966 xcoff_link_hash_traverse (xcoff_hash_table (info),
3967 xcoff_write_global_symbol,
3968 (PTR) &finfo);
3969
3970 if (finfo.outsyms != NULL)
3971 {
3972 free (finfo.outsyms);
3973 finfo.outsyms = NULL;
3974 }
3975
3976 /* Now that we have written out all the global symbols, we know the
3977 symbol indices to use for relocs against them, and we can finally
3978 write out the relocs. */
dc810e39
AM		 3979 amt = max_output_reloc_count * relsz;
3980 external_relocs = (bfd_byte *) bfd_malloc (amt);
252b5132
RH		 3981 if (external_relocs == NULL && max_output_reloc_count != 0)
3982 goto error_return;
3983
dc810e39
AM		 3984 for (o = abfd->sections; o != NULL; o = o->next)
3985 {
3986 struct internal_reloc *irel;
3987 struct internal_reloc *irelend;
3988 struct xcoff_link_hash_entry **rel_hash;
3989 struct xcoff_toc_rel_hash *toc_rel_hash;
3990 bfd_byte *erel;
3991 bfd_size_type rel_size;
3992
3993 /* A stripped file has no relocs. */
3994 if (info->strip == strip_all)
3995 {
3996 o->reloc_count = 0;
3997 continue;
252b5132 3998 }
252b5132 3999
dc810e39
AM		 4000 if (o->reloc_count == 0)
4001 continue;
252b5132 4002
dc810e39
AM		 4003 irel = finfo.section_info[o->target_index].relocs;
4004 irelend = irel + o->reloc_count;
4005 rel_hash = finfo.section_info[o->target_index].rel_hashes;
4006 for (; irel < irelend; irel++, rel_hash++, erel += relsz)
4007 {
4008 if (*rel_hash != NULL)
4009 {
4010 if ((*rel_hash)->indx < 0)
4011 {
4012 if (! ((*info->callbacks->unattached_reloc)
4013 (info, (*rel_hash)->root.root.string,
4014 (bfd *) NULL, o, irel->r_vaddr)))
4015 goto error_return;
4016 (*rel_hash)->indx = 0;
4017 }
4018 irel->r_symndx = (*rel_hash)->indx;
4019 }
4020 }
beb1bf64 4021
dc810e39
AM		 4022 for (toc_rel_hash = finfo.section_info[o->target_index].toc_rel_hashes;
4023 toc_rel_hash != NULL;
4024 toc_rel_hash = toc_rel_hash->next)
4025 {
4026 if (toc_rel_hash->h->u.toc_indx < 0)
4027 {
4028 if (! ((*info->callbacks->unattached_reloc)
4029 (info, toc_rel_hash->h->root.root.string,
4030 (bfd *) NULL, o, toc_rel_hash->rel->r_vaddr)))
4031 goto error_return;
4032 toc_rel_hash->h->u.toc_indx = 0;
4033 }
4034 toc_rel_hash->rel->r_symndx = toc_rel_hash->h->u.toc_indx;
4035 }
4036
4037 /* XCOFF requires that the relocs be sorted by address. We tend
4038 to produce them in the order in which their containing csects
4039 appear in the symbol table, which is not necessarily by
4040 address. So we sort them here. There may be a better way to
4041 do this. */
4042 qsort ((PTR) finfo.section_info[o->target_index].relocs,
4043 o->reloc_count, sizeof (struct internal_reloc),
4044 xcoff_sort_relocs);
4045
4046 irel = finfo.section_info[o->target_index].relocs;
4047 irelend = irel + o->reloc_count;
4048 erel = external_relocs;
4049 for (; irel < irelend; irel++, rel_hash++, erel += relsz)
4050 bfd_coff_swap_reloc_out (abfd, (PTR) irel, (PTR) erel);
4051
4052 rel_size = relsz * o->reloc_count;
4053 if (bfd_seek (abfd, o->rel_filepos, SEEK_SET) != 0
4054 || bfd_bwrite ((PTR) external_relocs, rel_size, abfd) != rel_size)
4055 goto error_return;
4056 }
4057
4058 if (external_relocs != NULL)
4059 {
4060 free (external_relocs);
4061 external_relocs = NULL;
4062 }
beb1bf64 4063
252b5132 4064 /* Free up the section information. */
dc810e39
AM		 4065 if (finfo.section_info != NULL)
4066 {
4067 unsigned int i;
252b5132 4068
dc810e39
AM		 4069 for (i = 0; i < abfd->section_count; i++)
4070 {
4071 if (finfo.section_info[i].relocs != NULL)
4072 free (finfo.section_info[i].relocs);
4073 if (finfo.section_info[i].rel_hashes != NULL)
4074 free (finfo.section_info[i].rel_hashes);
4075 }
4076 free (finfo.section_info);
4077 finfo.section_info = NULL;
252b5132
RH		 4078 }
4079
4080 /* Write out the loader section contents. */
4081 BFD_ASSERT ((bfd_byte *) finfo.ldrel
4082 == (xcoff_hash_table (info)->loader_section->contents
4083 + xcoff_hash_table (info)->ldhdr.l_impoff));
4084 o = xcoff_hash_table (info)->loader_section;
dc810e39
AM		 4085 if (! bfd_set_section_contents (abfd, o->output_section, o->contents,
4086 (file_ptr) o->output_offset, o->_raw_size))
252b5132
RH		 4087 goto error_return;
4088
4089 /* Write out the magic sections. */
4090 o = xcoff_hash_table (info)->linkage_section;
4091 if (o->_raw_size > 0
4092 && ! bfd_set_section_contents (abfd, o->output_section, o->contents,
dc810e39
AM		 4093 (file_ptr) o->output_offset,
4094 o->_raw_size))
252b5132
RH		 4095 goto error_return;
4096 o = xcoff_hash_table (info)->toc_section;
4097 if (o->_raw_size > 0
4098 && ! bfd_set_section_contents (abfd, o->output_section, o->contents,
dc810e39
AM		 4099 (file_ptr) o->output_offset,
4100 o->_raw_size))
252b5132
RH		 4101 goto error_return;
4102 o = xcoff_hash_table (info)->descriptor_section;
4103 if (o->_raw_size > 0
4104 && ! bfd_set_section_contents (abfd, o->output_section, o->contents,
dc810e39
AM		 4105 (file_ptr) o->output_offset,
4106 o->_raw_size))
252b5132
RH		 4107 goto error_return;
4108
4109 /* Write out the string table. */
dc810e39
AM		 4110 pos = obj_sym_filepos (abfd) + obj_raw_syment_count (abfd) * symesz;
4111 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
252b5132 4112 goto error_return;
dc810e39
AM		 4113 H_PUT_32 (abfd,
4114 _bfd_stringtab_size (finfo.strtab) + STRING_SIZE_SIZE,
4115 strbuf);
4116 amt = STRING_SIZE_SIZE;
4117 if (bfd_bwrite (strbuf, amt, abfd) != amt)
252b5132
RH		 4118 goto error_return;
4119 if (! _bfd_stringtab_emit (abfd, finfo.strtab))
4120 goto error_return;
4121
4122 _bfd_stringtab_free (finfo.strtab);
4123
4124 /* Write out the debugging string table. */
4125 o = xcoff_hash_table (info)->debug_section;
dc810e39
AM		 4126 if (o != NULL)
4127 {
4128 struct bfd_strtab_hash *debug_strtab;
4129
4130 debug_strtab = xcoff_hash_table (info)->debug_strtab;
4131 BFD_ASSERT (o->output_section->_raw_size - o->output_offset
4132 >= _bfd_stringtab_size (debug_strtab));
4133 pos = o->output_section->filepos + o->output_offset;
4134 if (bfd_seek (abfd, pos, SEEK_SET) != 0)
4135 goto error_return;
4136 if (! _bfd_stringtab_emit (abfd, debug_strtab))
4137 goto error_return;
4138 }
4139
252b5132
RH		 4140 /* Setting bfd_get_symcount to 0 will cause write_object_contents to
4141 not try to write out the symbols. */
4142 bfd_get_symcount (abfd) = 0;
dc810e39 4143
b34976b6 4144 return TRUE;
252b5132
RH		 4145
4146 error_return:
4147 if (finfo.strtab != NULL)
4148 _bfd_stringtab_free (finfo.strtab);
dc810e39
AM		 4149
4150 if (finfo.section_info != NULL)
4151 {
4152 unsigned int i;
4153
4154 for (i = 0; i < abfd->section_count; i++)
4155 {
4156 if (finfo.section_info[i].relocs != NULL)
4157 free (finfo.section_info[i].relocs);
4158 if (finfo.section_info[i].rel_hashes != NULL)
4159 free (finfo.section_info[i].rel_hashes);
4160 }
4161 free (finfo.section_info);
252b5132 4162 }
dc810e39 4163
252b5132
RH		 4164 if (finfo.internal_syms != NULL)
4165 free (finfo.internal_syms);
4166 if (finfo.sym_indices != NULL)
4167 free (finfo.sym_indices);
4168 if (finfo.outsyms != NULL)
4169 free (finfo.outsyms);
4170 if (finfo.linenos != NULL)
4171 free (finfo.linenos);
4172 if (finfo.contents != NULL)
4173 free (finfo.contents);
4174 if (finfo.external_relocs != NULL)
4175 free (finfo.external_relocs);
4176 if (external_relocs != NULL)
4177 free (external_relocs);
b34976b6 4178 return FALSE;
252b5132
RH		 4179}
4180
4181/* Link an input file into the linker output file. This function
4182 handles all the sections and relocations of the input file at once. */
4183
b34976b6 4184static bfd_boolean
252b5132
RH		 4185xcoff_link_input_bfd (finfo, input_bfd)
4186 struct xcoff_final_link_info *finfo;
4187 bfd *input_bfd;
4188{
4189 bfd *output_bfd;
4190 const char *strings;
4191 bfd_size_type syment_base;
4192 unsigned int n_tmask;
4193 unsigned int n_btshft;
b34976b6 4194 bfd_boolean copy, hash;
252b5132
RH		 4195 bfd_size_type isymesz;
4196 bfd_size_type osymesz;
4197 bfd_size_type linesz;
4198 bfd_byte *esym;
4199 bfd_byte *esym_end;
4200 struct xcoff_link_hash_entry **sym_hash;
4201 struct internal_syment *isymp;
4202 asection **csectpp;
4203 unsigned long *debug_index;
4204 long *indexp;
4205 unsigned long output_index;
4206 bfd_byte *outsym;
4207 unsigned int incls;
4208 asection *oline;
b34976b6 4209 bfd_boolean keep_syms;
252b5132
RH		 4210 asection *o;
4211
4212 /* We can just skip DYNAMIC files, unless this is a static link. */
4213 if ((input_bfd->flags & DYNAMIC) != 0
4214 && ! finfo->info->static_link)
b34976b6 4215 return TRUE;
252b5132
RH		 4216
4217 /* Move all the symbols to the output file. */
4218
4219 output_bfd = finfo->output_bfd;
4220 strings = NULL;
4221 syment_base = obj_raw_syment_count (output_bfd);
4222 isymesz = bfd_coff_symesz (input_bfd);
4223 osymesz = bfd_coff_symesz (output_bfd);
4224 linesz = bfd_coff_linesz (input_bfd);
4225 BFD_ASSERT (linesz == bfd_coff_linesz (output_bfd));
4226
4227 n_tmask = coff_data (input_bfd)->local_n_tmask;
4228 n_btshft = coff_data (input_bfd)->local_n_btshft;
4229
4230 /* Define macros so that ISFCN, et. al., macros work correctly. */
4231#define N_TMASK n_tmask
4232#define N_BTSHFT n_btshft
4233
b34976b6 4234 copy = FALSE;
252b5132 4235 if (! finfo->info->keep_memory)
b34976b6
AM		 4236 copy = TRUE;
4237 hash = TRUE;
252b5132 4238 if ((output_bfd->flags & BFD_TRADITIONAL_FORMAT) != 0)
b34976b6 4239 hash = FALSE;
252b5132
RH		 4240
4241 if (! _bfd_coff_get_external_symbols (input_bfd))
b34976b6 4242 return FALSE;
252b5132
RH		 4243
4244 esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
4245 esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
4246 sym_hash = obj_xcoff_sym_hashes (input_bfd);
4247 csectpp = xcoff_data (input_bfd)->csects;
4248 debug_index = xcoff_data (input_bfd)->debug_indices;
4249 isymp = finfo->internal_syms;
4250 indexp = finfo->sym_indices;
4251 output_index = syment_base;
4252 outsym = finfo->outsyms;
4253 incls = 0;
4254 oline = NULL;
4255
4256 while (esym < esym_end)
4257 {
beb1bf64 4258
252b5132
RH		 4259 struct internal_syment isym;
4260 union internal_auxent aux;
4261 int smtyp = 0;
b34976b6
AM		 4262 bfd_boolean skip;
4263 bfd_boolean require;
252b5132
RH		 4264 int add;
4265
4266 bfd_coff_swap_sym_in (input_bfd, (PTR) esym, (PTR) isymp);
4267
4268 /* If this is a C_EXT or C_HIDEXT symbol, we need the csect
b34976b6 4269 information. */
252b5132
RH		 4270 if (isymp->n_sclass == C_EXT || isymp->n_sclass == C_HIDEXT)
4271 {
4272 BFD_ASSERT (isymp->n_numaux > 0);
4273 bfd_coff_swap_aux_in (input_bfd,
4274 (PTR) (esym + isymesz * isymp->n_numaux),
4275 isymp->n_type, isymp->n_sclass,
4276 isymp->n_numaux - 1, isymp->n_numaux,
4277 (PTR) &aux);
beb1bf64 4278
252b5132
RH		 4279 smtyp = SMTYP_SMTYP (aux.x_csect.x_smtyp);
4280 }
4281
4282 /* Make a copy of *isymp so that the relocate_section function
4283 always sees the original values. This is more reliable than
4284 always recomputing the symbol value even if we are stripping
4285 the symbol. */
4286 isym = *isymp;
4287
4288 /* If this symbol is in the .loader section, swap out the
b34976b6
AM		 4289 .loader symbol information. If this is an external symbol
4290 reference to a defined symbol, though, then wait until we get
4291 to the definition. */
252b5132
RH		 4292 if (isym.n_sclass == C_EXT
4293 && *sym_hash != NULL
4294 && (*sym_hash)->ldsym != NULL
4295 && (smtyp != XTY_ER
4296 || (*sym_hash)->root.type == bfd_link_hash_undefined))
4297 {
4298 struct xcoff_link_hash_entry *h;
4299 struct internal_ldsym *ldsym;
4300
4301 h = *sym_hash;
4302 ldsym = h->ldsym;
4303 if (isym.n_scnum > 0)
4304 {
4305 ldsym->l_scnum = (*csectpp)->output_section->target_index;
4306 ldsym->l_value = (isym.n_value
4307 + (*csectpp)->output_section->vma
4308 + (*csectpp)->output_offset
4309 - (*csectpp)->vma);
4310 }
4311 else
4312 {
4313 ldsym->l_scnum = isym.n_scnum;
4314 ldsym->l_value = isym.n_value;
4315 }
4316
4317 ldsym->l_smtype = smtyp;
4318 if (((h->flags & XCOFF_DEF_REGULAR) == 0
4319 && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
4320 || (h->flags & XCOFF_IMPORT) != 0)
4321 ldsym->l_smtype |= L_IMPORT;
4322 if (((h->flags & XCOFF_DEF_REGULAR) != 0
4323 && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
4324 || (h->flags & XCOFF_EXPORT) != 0)
4325 ldsym->l_smtype |= L_EXPORT;
4326 if ((h->flags & XCOFF_ENTRY) != 0)
4327 ldsym->l_smtype |= L_ENTRY;
4328
4329 ldsym->l_smclas = aux.x_csect.x_smclas;
4330
4331 if (ldsym->l_ifile == (bfd_size_type) -1)
4332 ldsym->l_ifile = 0;
4333 else if (ldsym->l_ifile == 0)
4334 {
4335 if ((ldsym->l_smtype & L_IMPORT) == 0)
4336 ldsym->l_ifile = 0;
4337 else
4338 {
4339 bfd *impbfd;
4340
4341 if (h->root.type == bfd_link_hash_defined
4342 || h->root.type == bfd_link_hash_defweak)
4343 impbfd = h->root.u.def.section->owner;
4344 else if (h->root.type == bfd_link_hash_undefined
4345 || h->root.type == bfd_link_hash_undefweak)
4346 impbfd = h->root.u.undef.abfd;
4347 else
4348 impbfd = NULL;
4349
4350 if (impbfd == NULL)
4351 ldsym->l_ifile = 0;
4352 else
4353 {
4354 BFD_ASSERT (impbfd->xvec == finfo->output_bfd->xvec);
4355 ldsym->l_ifile = xcoff_data (impbfd)->import_file_id;
4356 }
4357 }
4358 }
4359
4360 ldsym->l_parm = 0;
4361
4362 BFD_ASSERT (h->ldindx >= 0);
beb1bf64 4363 bfd_xcoff_swap_ldsym_out (finfo->output_bfd, ldsym,
dc810e39
AM		 4364 (finfo->ldsym
4365 + ((h->ldindx - 3)
4366 * bfd_xcoff_ldsymsz (finfo->output_bfd))));
252b5132
RH		 4367 h->ldsym = NULL;
4368
4369 /* Fill in snentry now that we know the target_index. */
dc810e39
AM		 4370 if ((h->flags & XCOFF_ENTRY) != 0
4371 && (h->root.type == bfd_link_hash_defined
4372 || h->root.type == bfd_link_hash_defweak))
4373 {
4374 xcoff_data (output_bfd)->snentry =
4375 h->root.u.def.section->output_section->target_index;
4376 }
252b5132
RH		 4377 }
4378
4379 *indexp = -1;
4380
b34976b6
AM		 4381 skip = FALSE;
4382 require = FALSE;
252b5132
RH		 4383 add = 1 + isym.n_numaux;
4384
4385 /* If we are skipping this csect, we want to skip this symbol. */
4386 if (*csectpp == NULL)
b34976b6 4387 skip = TRUE;
252b5132
RH		 4388
4389 /* If we garbage collected this csect, we want to skip this
b34976b6 4390 symbol. */
252b5132
RH		 4391 if (! skip
4392 && xcoff_hash_table (finfo->info)->gc
4393 && ((*csectpp)->flags & SEC_MARK) == 0
4394 && *csectpp != bfd_abs_section_ptr)
b34976b6 4395 skip = TRUE;
252b5132
RH		 4396
4397 /* An XCOFF linker always skips C_STAT symbols. */
4398 if (! skip
4399 && isymp->n_sclass == C_STAT)
b34976b6 4400 skip = TRUE;
252b5132
RH		 4401
4402 /* We skip all but the first TOC anchor. */
4403 if (! skip
4404 && isymp->n_sclass == C_HIDEXT
4405 && aux.x_csect.x_smclas == XMC_TC0)
4406 {
4407 if (finfo->toc_symindx != -1)
b34976b6 4408 skip = TRUE;
252b5132
RH		 4409 else
4410 {
4411 bfd_vma tocval, tocend;
492055e6 4412 bfd *inp;
252b5132
RH		 4413
4414 tocval = ((*csectpp)->output_section->vma
4415 + (*csectpp)->output_offset
4416 + isym.n_value
4417 - (*csectpp)->vma);
492055e6 4418
252b5132 4419 /* We want to find out if tocval is a good value to use
b34976b6
AM		 4420 as the TOC anchor--that is, whether we can access all
4421 of the TOC using a 16 bit offset from tocval. This
4422 test assumes that the TOC comes at the end of the
4423 output section, as it does in the default linker
4424 script. */
252b5132
RH		 4425 tocend = ((*csectpp)->output_section->vma
4426 + (*csectpp)->output_section->_raw_size);
fbc4fff4
KH		 4427 for (inp = finfo->info->input_bfds;
4428 inp != NULL;
492055e6
GK		 4429 inp = inp->link_next)
4430 {
fbc4fff4 4431
492055e6
GK		 4432 for (o = inp->sections; o != NULL; o = o->next)
4433 if (strcmp (o->name, ".tocbss") == 0)
4434 {
4435 bfd_vma new_toc_end;
4436 new_toc_end = (o->output_section->vma
4437 + o->output_offset
4438 + o->_cooked_size);
4439 if (new_toc_end > tocend)
4440 tocend = new_toc_end;
4441 }
fbc4fff4 4442
492055e6 4443 }
fbc4fff4 4444
252b5132
RH		 4445 if (tocval + 0x10000 < tocend)
4446 {
4447 (*_bfd_error_handler)
4448 (_("TOC overflow: 0x%lx > 0x10000; try -mminimal-toc when compiling"),
4449 (unsigned long) (tocend - tocval));
4450 bfd_set_error (bfd_error_file_too_big);
b34976b6 4451 return FALSE;
252b5132
RH		 4452 }
4453
4454 if (tocval + 0x8000 < tocend)
4455 {
4456 bfd_vma tocadd;
4457
4458 tocadd = tocend - (tocval + 0x8000);
4459 tocval += tocadd;
4460 isym.n_value += tocadd;
4461 }
4462
4463 finfo->toc_symindx = output_index;
4464 xcoff_data (finfo->output_bfd)->toc = tocval;
4465 xcoff_data (finfo->output_bfd)->sntoc =
4466 (*csectpp)->output_section->target_index;
b34976b6 4467 require = TRUE;
dc810e39 4468
252b5132
RH		 4469 }
4470 }
4471
4472 /* If we are stripping all symbols, we want to skip this one. */
4473 if (! skip
4474 && finfo->info->strip == strip_all)
b34976b6 4475 skip = TRUE;
252b5132
RH		 4476
4477 /* We can skip resolved external references. */
4478 if (! skip
4479 && isym.n_sclass == C_EXT
4480 && smtyp == XTY_ER
4481 && (*sym_hash)->root.type != bfd_link_hash_undefined)
b34976b6 4482 skip = TRUE;
252b5132
RH		 4483
4484 /* We can skip common symbols if they got defined somewhere
b34976b6 4485 else. */
252b5132
RH		 4486 if (! skip
4487 && isym.n_sclass == C_EXT
4488 && smtyp == XTY_CM
4489 && ((*sym_hash)->root.type != bfd_link_hash_common
4490 || (*sym_hash)->root.u.c.p->section != *csectpp)
4491 && ((*sym_hash)->root.type != bfd_link_hash_defined
4492 || (*sym_hash)->root.u.def.section != *csectpp))
b34976b6 4493 skip = TRUE;
252b5132
RH		 4494
4495 /* Skip local symbols if we are discarding them. */
4496 if (! skip
4497 && finfo->info->discard == discard_all
4498 && isym.n_sclass != C_EXT
4499 && (isym.n_sclass != C_HIDEXT
4500 || smtyp != XTY_SD))
b34976b6 4501 skip = TRUE;
252b5132
RH		 4502
4503 /* If we stripping debugging symbols, and this is a debugging
b34976b6 4504 symbol, then skip it. */
252b5132
RH		 4505 if (! skip
4506 && finfo->info->strip == strip_debugger
4507 && isym.n_scnum == N_DEBUG)
b34976b6 4508 skip = TRUE;
252b5132
RH		 4509
4510 /* If some symbols are stripped based on the name, work out the
4511 name and decide whether to skip this symbol. We don't handle
4512 this correctly for symbols whose names are in the .debug
4513 section; to get it right we would need a new bfd_strtab_hash
4514 function to return the string given the index. */
4515 if (! skip
4516 && (finfo->info->strip == strip_some
4517 || finfo->info->discard == discard_l)
4518 && (debug_index == NULL || *debug_index == (unsigned long) -1))
4519 {
4520 const char *name;
4521 char buf[SYMNMLEN + 1];
4522
4523 name = _bfd_coff_internal_syment_name (input_bfd, &isym, buf);
beb1bf64 4524
252b5132 4525 if (name == NULL)
b34976b6 4526 return FALSE;
252b5132
RH		 4527
4528 if ((finfo->info->strip == strip_some
b34976b6
AM		 4529 && (bfd_hash_lookup (finfo->info->keep_hash, name, FALSE,
4530 FALSE) == NULL))
252b5132
RH		 4531 || (finfo->info->discard == discard_l
4532 && (isym.n_sclass != C_EXT
4533 && (isym.n_sclass != C_HIDEXT
4534 || smtyp != XTY_SD))
4535 && bfd_is_local_label_name (input_bfd, name)))
b34976b6 4536 skip = TRUE;
252b5132
RH		 4537 }
4538
4539 /* We can not skip the first TOC anchor. */
4540 if (skip
4541 && require
4542 && finfo->info->strip != strip_all)
b34976b6 4543 skip = FALSE;
252b5132
RH		 4544
4545 /* We now know whether we are to skip this symbol or not. */
4546 if (! skip)
4547 {
4548 /* Adjust the symbol in order to output it. */
4549
4550 if (isym._n._n_n._n_zeroes == 0
4551 && isym._n._n_n._n_offset != 0)
4552 {
4553 /* This symbol has a long name. Enter it in the string
4554 table we are building. If *debug_index != -1, the
4555 name has already been entered in the .debug section. */
4556 if (debug_index != NULL && *debug_index != (unsigned long) -1)
4557 isym._n._n_n._n_offset = *debug_index;
4558 else
4559 {
4560 const char *name;
4561 bfd_size_type indx;
4562
4563 name = _bfd_coff_internal_syment_name (input_bfd, &isym,
4564 (char *) NULL);
beb1bf64 4565
252b5132 4566 if (name == NULL)
b34976b6 4567 return FALSE;
252b5132
RH		 4568 indx = _bfd_stringtab_add (finfo->strtab, name, hash, copy);
4569 if (indx == (bfd_size_type) -1)
b34976b6 4570 return FALSE;
252b5132
RH		 4571 isym._n._n_n._n_offset = STRING_SIZE_SIZE + indx;
4572 }
4573 }
4574
4575 if (isym.n_sclass != C_BSTAT
4576 && isym.n_sclass != C_ESTAT
4577 && isym.n_sclass != C_DECL
4578 && isym.n_scnum > 0)
4579 {
4580 isym.n_scnum = (*csectpp)->output_section->target_index;
4581 isym.n_value += ((*csectpp)->output_section->vma
4582 + (*csectpp)->output_offset
4583 - (*csectpp)->vma);
4584 }
4585
4586 /* The value of a C_FILE symbol is the symbol index of the
4587 next C_FILE symbol. The value of the last C_FILE symbol
4588 is -1. We try to get this right, below, just before we
4589 write the symbols out, but in the general case we may
4590 have to write the symbol out twice. */
4591 if (isym.n_sclass == C_FILE)
4592 {
4593 if (finfo->last_file_index != -1
beb1bf64 4594 && finfo->last_file.n_value != (bfd_vma) output_index)
252b5132
RH		 4595 {
4596 /* We must correct the value of the last C_FILE entry. */
4597 finfo->last_file.n_value = output_index;
4598 if ((bfd_size_type) finfo->last_file_index >= syment_base)
4599 {
4600 /* The last C_FILE symbol is in this input file. */
4601 bfd_coff_swap_sym_out (output_bfd,
4602 (PTR) &finfo->last_file,
4603 (PTR) (finfo->outsyms
4604 + ((finfo->last_file_index
4605 - syment_base)
4606 * osymesz)));
4607 }
4608 else
4609 {
4610 /* We have already written out the last C_FILE
4611 symbol. We need to write it out again. We
4612 borrow *outsym temporarily. */
dc810e39
AM		 4613 file_ptr pos;
4614
252b5132
RH		 4615 bfd_coff_swap_sym_out (output_bfd,
4616 (PTR) &finfo->last_file,
4617 (PTR) outsym);
dc810e39
AM		 4618
4619 pos = obj_sym_filepos (output_bfd);
4620 pos += finfo->last_file_index * osymesz;
4621 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
4622 || (bfd_bwrite (outsym, osymesz, output_bfd)
252b5132 4623 != osymesz))
b34976b6 4624 return FALSE;
252b5132
RH		 4625 }
4626 }
4627
4628 finfo->last_file_index = output_index;
4629 finfo->last_file = isym;
4630 }
4631
4632 /* The value of a C_BINCL or C_EINCL symbol is a file offset
b34976b6
AM		 4633 into the line numbers. We update the symbol values when
4634 we handle the line numbers. */
252b5132
RH		 4635 if (isym.n_sclass == C_BINCL
4636 || isym.n_sclass == C_EINCL)
4637 {
4638 isym.n_value = finfo->line_filepos;
4639 ++incls;
4640 }
4641
4642 /* Output the symbol. */
4643
4644 bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym);
4645
4646 *indexp = output_index;
4647
4648 if (isym.n_sclass == C_EXT)
4649 {
4650 long indx;
4651 struct xcoff_link_hash_entry *h;
4652
4653 indx = ((esym - (bfd_byte *) obj_coff_external_syms (input_bfd))
4654 / isymesz);
4655 h = obj_xcoff_sym_hashes (input_bfd)[indx];
4656 BFD_ASSERT (h != NULL);
4657 h->indx = output_index;
4658 }
4659
4660 /* If this is a symbol in the TOC which we may have merged
b34976b6
AM		 4661 (class XMC_TC), remember the symbol index of the TOC
4662 symbol. */
252b5132
RH		 4663 if (isym.n_sclass == C_HIDEXT
4664 && aux.x_csect.x_smclas == XMC_TC
4665 && *sym_hash != NULL)
4666 {
4667 BFD_ASSERT (((*sym_hash)->flags & XCOFF_SET_TOC) == 0);
4668 BFD_ASSERT ((*sym_hash)->toc_section != NULL);
4669 (*sym_hash)->u.toc_indx = output_index;
4670 }
4671
4672 output_index += add;
4673 outsym += add * osymesz;
4674 }
4675
4676 esym += add * isymesz;
4677 isymp += add;
4678 csectpp += add;
4679 sym_hash += add;
4680 if (debug_index != NULL)
4681 debug_index += add;
4682 ++indexp;
4683 for (--add; add > 0; --add)
4684 *indexp++ = -1;
4685 }
4686
4687 /* Fix up the aux entries and the C_BSTAT symbols. This must be
4688 done in a separate pass, because we don't know the correct symbol
4689 indices until we have already decided which symbols we are going
4690 to keep. */
4691
4692 esym = (bfd_byte *) obj_coff_external_syms (input_bfd);
4693 esym_end = esym + obj_raw_syment_count (input_bfd) * isymesz;
4694 isymp = finfo->internal_syms;
4695 indexp = finfo->sym_indices;
4696 csectpp = xcoff_data (input_bfd)->csects;
4697 outsym = finfo->outsyms;
4698 while (esym < esym_end)
4699 {
4700 int add;
4701
4702 add = 1 + isymp->n_numaux;
4703
4704 if (*indexp < 0)
4705 esym += add * isymesz;
4706 else
4707 {
4708 int i;
4709
4710 if (isymp->n_sclass == C_BSTAT)
4711 {
4712 struct internal_syment isym;
beb1bf64
TR		 4713
4714 bfd_vma indx;
252b5132
RH		 4715
4716 /* The value of a C_BSTAT symbol is the symbol table
b34976b6 4717 index of the containing csect. */
252b5132
RH		 4718 bfd_coff_swap_sym_in (output_bfd, (PTR) outsym, (PTR) &isym);
4719 indx = isym.n_value;
4720 if (indx < obj_raw_syment_count (input_bfd))
4721 {
4722 long symindx;
4723
4724 symindx = finfo->sym_indices[indx];
4725 if (symindx < 0)
4726 isym.n_value = 0;
4727 else
4728 isym.n_value = symindx;
4729 bfd_coff_swap_sym_out (output_bfd, (PTR) &isym,
4730 (PTR) outsym);
4731 }
4732 }
4733
4734 esym += isymesz;
4735 outsym += osymesz;
4736
4737 for (i = 0; i < isymp->n_numaux && esym < esym_end; i++)
4738 {
4739 union internal_auxent aux;
4740
4741 bfd_coff_swap_aux_in (input_bfd, (PTR) esym, isymp->n_type,
4742 isymp->n_sclass, i, isymp->n_numaux,
4743 (PTR) &aux);
4744
4745 if (isymp->n_sclass == C_FILE)
4746 {
4747 /* This is the file name (or some comment put in by
4748 the compiler). If it is long, we must put it in
4749 the string table. */
4750 if (aux.x_file.x_n.x_zeroes == 0
4751 && aux.x_file.x_n.x_offset != 0)
4752 {
4753 const char *filename;
4754 bfd_size_type indx;
4755
4756 BFD_ASSERT (aux.x_file.x_n.x_offset
4757 >= STRING_SIZE_SIZE);
4758 if (strings == NULL)
4759 {
4760 strings = _bfd_coff_read_string_table (input_bfd);
4761 if (strings == NULL)
b34976b6 4762 return FALSE;
252b5132
RH		 4763 }
4764 filename = strings + aux.x_file.x_n.x_offset;
4765 indx = _bfd_stringtab_add (finfo->strtab, filename,
4766 hash, copy);
4767 if (indx == (bfd_size_type) -1)
b34976b6 4768 return FALSE;
252b5132
RH		 4769 aux.x_file.x_n.x_offset = STRING_SIZE_SIZE + indx;
4770 }
4771 }
4772 else if ((isymp->n_sclass == C_EXT
4773 || isymp->n_sclass == C_HIDEXT)
4774 && i + 1 == isymp->n_numaux)
4775 {
beb1bf64 4776
252b5132 4777 /* We don't support type checking. I don't know if
b34976b6 4778 anybody does. */
252b5132
RH		 4779 aux.x_csect.x_parmhash = 0;
4780 /* I don't think anybody uses these fields, but we'd
b34976b6 4781 better clobber them just in case. */
252b5132
RH		 4782 aux.x_csect.x_stab = 0;
4783 aux.x_csect.x_snstab = 0;
beb1bf64 4784
252b5132
RH		 4785 if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_LD)
4786 {
dc810e39 4787 unsigned long indx;
252b5132 4788
dc810e39 4789 indx = aux.x_csect.x_scnlen.l;
252b5132
RH		 4790 if (indx < obj_raw_syment_count (input_bfd))
4791 {
4792 long symindx;
4793
4794 symindx = finfo->sym_indices[indx];
dc810e39
AM		 4795 if (symindx < 0)
4796 {
4797 aux.x_csect.x_scnlen.l = 0;
4798 }
4799 else
4800 {
4801 aux.x_csect.x_scnlen.l = symindx;
4802 }
252b5132
RH		 4803 }
4804 }
4805 }
4806 else if (isymp->n_sclass != C_STAT || isymp->n_type != T_NULL)
4807 {
4808 unsigned long indx;
4809
4810 if (ISFCN (isymp->n_type)
4811 || ISTAG (isymp->n_sclass)
4812 || isymp->n_sclass == C_BLOCK
4813 || isymp->n_sclass == C_FCN)
4814 {
4815 indx = aux.x_sym.x_fcnary.x_fcn.x_endndx.l;
4816 if (indx > 0
4817 && indx < obj_raw_syment_count (input_bfd))
4818 {
4819 /* We look forward through the symbol for
b34976b6
AM		 4820 the index of the next symbol we are going
4821 to include. I don't know if this is
4822 entirely right. */
252b5132
RH		 4823 while (finfo->sym_indices[indx] < 0
4824 && indx < obj_raw_syment_count (input_bfd))
4825 ++indx;
4826 if (indx >= obj_raw_syment_count (input_bfd))
4827 indx = output_index;
4828 else
4829 indx = finfo->sym_indices[indx];
4830 aux.x_sym.x_fcnary.x_fcn.x_endndx.l = indx;
beb1bf64 4831
252b5132
RH		 4832 }
4833 }
4834
4835 indx = aux.x_sym.x_tagndx.l;
4836 if (indx > 0 && indx < obj_raw_syment_count (input_bfd))
4837 {
4838 long symindx;
4839
4840 symindx = finfo->sym_indices[indx];
4841 if (symindx < 0)
4842 aux.x_sym.x_tagndx.l = 0;
4843 else
4844 aux.x_sym.x_tagndx.l = symindx;
4845 }
beb1bf64 4846
252b5132
RH		 4847 }
4848
4849 /* Copy over the line numbers, unless we are stripping
4850 them. We do this on a symbol by symbol basis in
4851 order to more easily handle garbage collection. */
4852 if ((isymp->n_sclass == C_EXT
4853 || isymp->n_sclass == C_HIDEXT)
4854 && i == 0
4855 && isymp->n_numaux > 1
4856 && ISFCN (isymp->n_type)
4857 && aux.x_sym.x_fcnary.x_fcn.x_lnnoptr != 0)
4858 {
4859 if (finfo->info->strip != strip_none
4860 && finfo->info->strip != strip_some)
4861 aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0;
4862 else
4863 {
4864 asection *enclosing;
4865 unsigned int enc_count;
beb1bf64 4866 bfd_signed_vma linoff;
252b5132
RH		 4867 struct internal_lineno lin;
4868
4869 o = *csectpp;
4870 enclosing = xcoff_section_data (abfd, o)->enclosing;
4871 enc_count = xcoff_section_data (abfd, o)->lineno_count;
4872 if (oline != enclosing)
4873 {
dc810e39
AM		 4874 file_ptr pos = enclosing->line_filepos;
4875 bfd_size_type amt = linesz * enc_count;
4876 if (bfd_seek (input_bfd, pos, SEEK_SET) != 0
4877 || (bfd_bread (finfo->linenos, amt, input_bfd)
4878 != amt))
b34976b6 4879 return FALSE;
252b5132
RH		 4880 oline = enclosing;
4881 }
4882
4883 linoff = (aux.x_sym.x_fcnary.x_fcn.x_lnnoptr
4884 - enclosing->line_filepos);
4885
4886 bfd_coff_swap_lineno_in (input_bfd,
4887 (PTR) (finfo->linenos + linoff),
4888 (PTR) &lin);
4889 if (lin.l_lnno != 0
4890 || ((bfd_size_type) lin.l_addr.l_symndx
4891 != ((esym
4892 - isymesz
4893 - ((bfd_byte *)
4894 obj_coff_external_syms (input_bfd)))
4895 / isymesz)))
4896 aux.x_sym.x_fcnary.x_fcn.x_lnnoptr = 0;
4897 else
4898 {
4899 bfd_byte *linpend, *linp;
4900 bfd_vma offset;
4901 bfd_size_type count;
4902
4903 lin.l_addr.l_symndx = *indexp;
4904 bfd_coff_swap_lineno_out (output_bfd, (PTR) &lin,
4905 (PTR) (finfo->linenos
4906 + linoff));
4907
4908 linpend = (finfo->linenos
4909 + enc_count * linesz);
4910 offset = (o->output_section->vma
4911 + o->output_offset
4912 - o->vma);
4913 for (linp = finfo->linenos + linoff + linesz;
4914 linp < linpend;
4915 linp += linesz)
4916 {
4917 bfd_coff_swap_lineno_in (input_bfd, (PTR) linp,
4918 (PTR) &lin);
4919 if (lin.l_lnno == 0)
4920 break;
4921 lin.l_addr.l_paddr += offset;
4922 bfd_coff_swap_lineno_out (output_bfd,
4923 (PTR) &lin,
4924 (PTR) linp);
4925 }
4926
4927 count = (linp - (finfo->linenos + linoff)) / linesz;
4928
4929 aux.x_sym.x_fcnary.x_fcn.x_lnnoptr =
4930 (o->output_section->line_filepos
4931 + o->output_section->lineno_count * linesz);
4932
4933 if (bfd_seek (output_bfd,
4934 aux.x_sym.x_fcnary.x_fcn.x_lnnoptr,
4935 SEEK_SET) != 0
dc810e39
AM		 4936 || (bfd_bwrite (finfo->linenos + linoff,
4937 linesz * count, output_bfd)
252b5132 4938 != linesz * count))
b34976b6 4939 return FALSE;
252b5132
RH		 4940
4941 o->output_section->lineno_count += count;
4942
4943 if (incls > 0)
4944 {
4945 struct internal_syment *iisp, *iispend;
4946 long *iindp;
4947 bfd_byte *oos;
4948 int iiadd;
4949
4950 /* Update any C_BINCL or C_EINCL symbols
b34976b6
AM		 4951 that refer to a line number in the
4952 range we just output. */
252b5132
RH		 4953 iisp = finfo->internal_syms;
4954 iispend = (iisp
4955 + obj_raw_syment_count (input_bfd));
4956 iindp = finfo->sym_indices;
4957 oos = finfo->outsyms;
4958 while (iisp < iispend)
4959 {
4960 if (*iindp >= 0
4961 && (iisp->n_sclass == C_BINCL
4962 || iisp->n_sclass == C_EINCL)
4963 && ((bfd_size_type) iisp->n_value
beb1bf64 4964 >= (bfd_size_type)(enclosing->line_filepos + linoff))
252b5132
RH		 4965 && ((bfd_size_type) iisp->n_value
4966 < (enclosing->line_filepos
4967 + enc_count * linesz)))
4968 {
4969 struct internal_syment iis;
4970
4971 bfd_coff_swap_sym_in (output_bfd,
4972 (PTR) oos,
4973 (PTR) &iis);
4974 iis.n_value =
4975 (iisp->n_value
4976 - enclosing->line_filepos
4977 - linoff
4978 + aux.x_sym.x_fcnary.x_fcn.x_lnnoptr);
4979 bfd_coff_swap_sym_out (output_bfd,
4980 (PTR) &iis,
4981 (PTR) oos);
4982 --incls;
4983 }
4984
4985 iiadd = 1 + iisp->n_numaux;
4986 if (*iindp >= 0)
4987 oos += iiadd * osymesz;
4988 iisp += iiadd;
4989 iindp += iiadd;
4990 }
4991 }
4992 }
4993 }
4994 }
4995
4996 bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, isymp->n_type,
4997 isymp->n_sclass, i, isymp->n_numaux,
4998 (PTR) outsym);
4999 outsym += osymesz;
5000 esym += isymesz;
5001 }
5002 }
5003
5004 indexp += add;
5005 isymp += add;
5006 csectpp += add;
5007 }
5008
5009 /* If we swapped out a C_FILE symbol, guess that the next C_FILE
5010 symbol will be the first symbol in the next input file. In the
5011 normal case, this will save us from writing out the C_FILE symbol
5012 again. */
5013 if (finfo->last_file_index != -1
5014 && (bfd_size_type) finfo->last_file_index >= syment_base)
5015 {
5016 finfo->last_file.n_value = output_index;
5017 bfd_coff_swap_sym_out (output_bfd, (PTR) &finfo->last_file,
5018 (PTR) (finfo->outsyms
5019 + ((finfo->last_file_index - syment_base)
5020 * osymesz)));
5021 }
5022
5023 /* Write the modified symbols to the output file. */
5024 if (outsym > finfo->outsyms)
5025 {
dc810e39
AM		 5026 file_ptr pos = obj_sym_filepos (output_bfd) + syment_base * osymesz;
5027 bfd_size_type amt = outsym - finfo->outsyms;
5028 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
5029 || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
b34976b6 5030 return FALSE;
252b5132
RH		 5031
5032 BFD_ASSERT ((obj_raw_syment_count (output_bfd)
5033 + (outsym - finfo->outsyms) / osymesz)
5034 == output_index);
5035
5036 obj_raw_syment_count (output_bfd) = output_index;
5037 }
5038
5039 /* Don't let the linker relocation routines discard the symbols. */
5040 keep_syms = obj_coff_keep_syms (input_bfd);
b34976b6 5041 obj_coff_keep_syms (input_bfd) = TRUE;
252b5132
RH		 5042
5043 /* Relocate the contents of each section. */
dc810e39
AM		 5044 for (o = input_bfd->sections; o != NULL; o = o->next)
5045 {
252b5132 5046
dc810e39 5047 bfd_byte *contents;
252b5132 5048
dc810e39
AM		 5049 if (! o->linker_mark)
5050 {
5051 /* This section was omitted from the link. */
5052 continue;
5053 }
252b5132 5054
dc810e39
AM		 5055 if ((o->flags & SEC_HAS_CONTENTS) == 0
5056 || o->_raw_size == 0
5057 || (o->flags & SEC_IN_MEMORY) != 0)
5058 continue;
252b5132 5059
dc810e39
AM		 5060 /* We have set filepos correctly for the sections we created to
5061 represent csects, so bfd_get_section_contents should work. */
5062 if (coff_section_data (input_bfd, o) != NULL
5063 && coff_section_data (input_bfd, o)->contents != NULL)
5064 contents = coff_section_data (input_bfd, o)->contents;
5065 else {
5066 if (! bfd_get_section_contents (input_bfd, o, finfo->contents,
5067 (file_ptr) 0, o->_raw_size))
b34976b6 5068 return FALSE;
dc810e39
AM		 5069 contents = finfo->contents;
5070 }
252b5132 5071
dc810e39
AM		 5072 if ((o->flags & SEC_RELOC) != 0)
5073 {
5074 int target_index;
5075 struct internal_reloc *internal_relocs;
5076 struct internal_reloc *irel;
5077 bfd_vma offset;
5078 struct internal_reloc *irelend;
5079 struct xcoff_link_hash_entry **rel_hash;
5080 long r_symndx;
5081
5082 /* Read in the relocs. */
5083 target_index = o->output_section->target_index;
5084 internal_relocs = (xcoff_read_internal_relocs
b34976b6
AM		 5085 (input_bfd, o, FALSE, finfo->external_relocs,
5086 TRUE,
dc810e39
AM		 5087 (finfo->section_info[target_index].relocs
5088 + o->output_section->reloc_count)));
5089 if (internal_relocs == NULL)
b34976b6 5090 return FALSE;
252b5132 5091
dc810e39
AM		 5092 /* Call processor specific code to relocate the section
5093 contents. */
5094 if (! bfd_coff_relocate_section (output_bfd, finfo->info,
5095 input_bfd, o,
5096 contents,
5097 internal_relocs,
5098 finfo->internal_syms,
5099 xcoff_data (input_bfd)->csects))
b34976b6 5100 return FALSE;
252b5132 5101
dc810e39
AM		 5102 offset = o->output_section->vma + o->output_offset - o->vma;
5103 irel = internal_relocs;
5104 irelend = irel + o->reloc_count;
5105 rel_hash = (finfo->section_info[target_index].rel_hashes
5106 + o->output_section->reloc_count);
5107 for (; irel < irelend; irel++, rel_hash++)
5108 {
5109 struct xcoff_link_hash_entry *h = NULL;
5110 struct internal_ldrel ldrel;
b34976b6 5111 bfd_boolean quiet;
252b5132 5112
dc810e39 5113 *rel_hash = NULL;
252b5132 5114
dc810e39 5115 /* Adjust the reloc address and symbol index. */
252b5132 5116
dc810e39 5117 irel->r_vaddr += offset;
252b5132 5118
dc810e39 5119 r_symndx = irel->r_symndx;
252b5132 5120
dc810e39
AM		 5121 if (r_symndx == -1)
5122 h = NULL;
5123 else
5124 h = obj_xcoff_sym_hashes (input_bfd)[r_symndx];
252b5132 5125
dc810e39
AM		 5126 if (r_symndx != -1 && finfo->info->strip != strip_all)
5127 {
5128 if (h != NULL
5129 && h->smclas != XMC_TD
5130 && (irel->r_type == R_TOC
5131 || irel->r_type == R_GL
5132 || irel->r_type == R_TCL
5133 || irel->r_type == R_TRL
5134 || irel->r_type == R_TRLA))
5135 {
5136 /* This is a TOC relative reloc with a symbol
5137 attached. The symbol should be the one which
5138 this reloc is for. We want to make this
5139 reloc against the TOC address of the symbol,
5140 not the symbol itself. */
5141 BFD_ASSERT (h->toc_section != NULL);
5142 BFD_ASSERT ((h->flags & XCOFF_SET_TOC) == 0);
5143 if (h->u.toc_indx != -1)
5144 irel->r_symndx = h->u.toc_indx;
5145 else
5146 {
5147 struct xcoff_toc_rel_hash *n;
5148 struct xcoff_link_section_info *si;
5149 bfd_size_type amt;
5150
5151 amt = sizeof (struct xcoff_toc_rel_hash);
5152 n = ((struct xcoff_toc_rel_hash *)
5153 bfd_alloc (finfo->output_bfd, amt));
5154 if (n == NULL)
b34976b6 5155 return FALSE;
dc810e39
AM		 5156 si = finfo->section_info + target_index;
5157 n->next = si->toc_rel_hashes;
5158 n->h = h;
5159 n->rel = irel;
5160 si->toc_rel_hashes = n;
5161 }
5162 }
5163 else if (h != NULL)
5164 {
5165 /* This is a global symbol. */
5166 if (h->indx >= 0)
5167 irel->r_symndx = h->indx;
5168 else
5169 {
5170 /* This symbol is being written at the end
5171 of the file, and we do not yet know the
5172 symbol index. We save the pointer to the
5173 hash table entry in the rel_hash list.
5174 We set the indx field to -2 to indicate
5175 that this symbol must not be stripped. */
5176 *rel_hash = h;
5177 h->indx = -2;
5178 }
5179 }
5180 else
5181 {
5182 long indx;
252b5132 5183
dc810e39 5184 indx = finfo->sym_indices[r_symndx];
252b5132 5185
dc810e39
AM		 5186 if (indx == -1)
5187 {
5188 struct internal_syment *is;
5189
5190 /* Relocations against a TC0 TOC anchor are
5191 automatically transformed to be against
5192 the TOC anchor in the output file. */
5193 is = finfo->internal_syms + r_symndx;
5194 if (is->n_sclass == C_HIDEXT
5195 && is->n_numaux > 0)
5196 {
5197 PTR auxptr;
5198 union internal_auxent aux;
5199
5200 auxptr = ((PTR)
5201 (((bfd_byte *)
5202 obj_coff_external_syms (input_bfd))
5203 + ((r_symndx + is->n_numaux)
5204 * isymesz)));
5205 bfd_coff_swap_aux_in (input_bfd, auxptr,
5206 is->n_type, is->n_sclass,
5207 is->n_numaux - 1,
5208 is->n_numaux,
5209 (PTR) &aux);
5210 if (SMTYP_SMTYP (aux.x_csect.x_smtyp) == XTY_SD
5211 && aux.x_csect.x_smclas == XMC_TC0)
5212 indx = finfo->toc_symindx;
5213 }
5214 }
252b5132 5215
dc810e39
AM		 5216 if (indx != -1)
5217 irel->r_symndx = indx;
5218 else
5219 {
252b5132 5220
dc810e39 5221 struct internal_syment *is;
252b5132 5222
dc810e39
AM		 5223 const char *name;
5224 char buf[SYMNMLEN + 1];
252b5132 5225
dc810e39
AM		 5226 /* This reloc is against a symbol we are
5227 stripping. It would be possible to handle
5228 this case, but I don't think it's worth it. */
5229 is = finfo->internal_syms + r_symndx;
beb1bf64 5230
dc810e39
AM		 5231 name = (_bfd_coff_internal_syment_name
5232 (input_bfd, is, buf));
5233
5234 if (name == NULL)
b34976b6 5235 return FALSE;
dc810e39
AM		 5236
5237 if (! ((*finfo->info->callbacks->unattached_reloc)
5238 (finfo->info, name, input_bfd, o,
5239 irel->r_vaddr)))
b34976b6 5240 return FALSE;
dc810e39
AM		 5241 }
5242 }
5243 }
252b5132 5244
b34976b6 5245 quiet = FALSE;
dc810e39
AM		 5246 switch (irel->r_type)
5247 {
5248 default:
5249 if (h == NULL
5250 || h->root.type == bfd_link_hash_defined
5251 || h->root.type == bfd_link_hash_defweak
5252 || h->root.type == bfd_link_hash_common)
5253 break;
5254 /* Fall through. */
5255 case R_POS:
5256 case R_NEG:
5257 case R_RL:
5258 case R_RLA:
5259 /* This reloc needs to be copied into the .loader
5260 section. */
5261 ldrel.l_vaddr = irel->r_vaddr;
5262 if (r_symndx == -1)
5263 ldrel.l_symndx = -(bfd_size_type ) 1;
5264 else if (h == NULL
5265 || (h->root.type == bfd_link_hash_defined
5266 || h->root.type == bfd_link_hash_defweak
5267 || h->root.type == bfd_link_hash_common))
5268 {
5269 asection *sec;
5270
5271 if (h == NULL)
5272 sec = xcoff_data (input_bfd)->csects[r_symndx];
5273 else if (h->root.type == bfd_link_hash_common)
5274 sec = h->root.u.c.p->section;
5275 else
5276 sec = h->root.u.def.section;
5277 sec = sec->output_section;
5278
5279 if (strcmp (sec->name, ".text") == 0)
5280 ldrel.l_symndx = 0;
5281 else if (strcmp (sec->name, ".data") == 0)
5282 ldrel.l_symndx = 1;
5283 else if (strcmp (sec->name, ".bss") == 0)
5284 ldrel.l_symndx = 2;
5285 else
5286 {
5287 (*_bfd_error_handler)
5288 (_("%s: loader reloc in unrecognized section `%s'"),
8f615d07 5289 bfd_archive_filename (input_bfd),
dc810e39
AM		 5290 sec->name);
5291 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 5292 return FALSE;
dc810e39
AM		 5293 }
5294 }
5295 else
5296 {
1049f94e 5297 if (! finfo->info->relocatable
dc810e39
AM		 5298 && (h->flags & XCOFF_DEF_DYNAMIC) == 0
5299 && (h->flags & XCOFF_IMPORT) == 0)
5300 {
5301 /* We already called the undefined_symbol
5302 callback for this relocation, in
5303 _bfd_ppc_xcoff_relocate_section. Don't
5304 issue any more warnings. */
b34976b6 5305 quiet = TRUE;
dc810e39
AM		 5306 }
5307 if (h->ldindx < 0 && ! quiet)
5308 {
5309 (*_bfd_error_handler)
5310 (_("%s: `%s' in loader reloc but not loader sym"),
8f615d07 5311 bfd_archive_filename (input_bfd),
dc810e39
AM		 5312 h->root.root.string);
5313 bfd_set_error (bfd_error_bad_value);
b34976b6 5314 return FALSE;
dc810e39
AM		 5315 }
5316 ldrel.l_symndx = h->ldindx;
5317 }
5318 ldrel.l_rtype = (irel->r_size << 8) | irel->r_type;
5319 ldrel.l_rsecnm = o->output_section->target_index;
5320 if (xcoff_hash_table (finfo->info)->textro
5321 && strcmp (o->output_section->name, ".text") == 0
5322 && ! quiet)
5323 {
5324 (*_bfd_error_handler)
5325 (_("%s: loader reloc in read-only section %s"),
8f615d07 5326 bfd_archive_filename (input_bfd),
dc810e39
AM		 5327 bfd_get_section_name (finfo->output_bfd,
5328 o->output_section));
5329 bfd_set_error (bfd_error_invalid_operation);
b34976b6 5330 return FALSE;
dc810e39
AM		 5331 }
5332 bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel,
5333 finfo->ldrel);
252b5132 5334
dc810e39
AM		 5335 finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
5336 break;
252b5132 5337
dc810e39
AM		 5338 case R_TOC:
5339 case R_GL:
5340 case R_TCL:
5341 case R_TRL:
5342 case R_TRLA:
5343 /* We should never need a .loader reloc for a TOC
5344 relative reloc. */
5345 break;
5346 }
5347 }
beb1bf64 5348
dc810e39
AM		 5349 o->output_section->reloc_count += o->reloc_count;
5350 }
beb1bf64 5351
dc810e39
AM		 5352 /* Write out the modified section contents. */
5353 if (! bfd_set_section_contents (output_bfd, o->output_section,
5354 contents, (file_ptr) o->output_offset,
5355 (o->_cooked_size != 0
5356 ? o->_cooked_size
5357 : o->_raw_size)))
b34976b6 5358 return FALSE;
252b5132
RH		 5359 }
5360
5361 obj_coff_keep_syms (input_bfd) = keep_syms;
5362
5363 if (! finfo->info->keep_memory)
5364 {
5365 if (! _bfd_coff_free_symbols (input_bfd))
b34976b6 5366 return FALSE;
252b5132
RH		 5367 }
5368
b34976b6 5369 return TRUE;
252b5132
RH		 5370}
5371
5372#undef N_TMASK
5373#undef N_BTSHFT
5374
5375/* Write out a non-XCOFF global symbol. */
5376
beb1bf64 5377
b34976b6 5378static bfd_boolean
dc810e39 5379xcoff_write_global_symbol (h, inf)
252b5132 5380 struct xcoff_link_hash_entry *h;
dc810e39 5381 PTR inf;
252b5132 5382{
dc810e39 5383 struct xcoff_final_link_info *finfo = (struct xcoff_final_link_info *) inf;
252b5132
RH		 5384 bfd *output_bfd;
5385 bfd_byte *outsym;
5386 struct internal_syment isym;
5387 union internal_auxent aux;
b34976b6 5388 bfd_boolean result;
dc810e39
AM		 5389 file_ptr pos;
5390 bfd_size_type amt;
252b5132
RH		 5391
5392 output_bfd = finfo->output_bfd;
5393 outsym = finfo->outsyms;
5394
e92d460e
AM		 5395 if (h->root.type == bfd_link_hash_warning)
5396 {
5397 h = (struct xcoff_link_hash_entry *) h->root.u.i.link;
5398 if (h->root.type == bfd_link_hash_new)
b34976b6 5399 return TRUE;
e92d460e
AM		 5400 }
5401
252b5132
RH		 5402 /* If this symbol was garbage collected, just skip it. */
5403 if (xcoff_hash_table (finfo->info)->gc
5404 && (h->flags & XCOFF_MARK) == 0)
b34976b6 5405 return TRUE;
252b5132
RH		 5406
5407 /* If we need a .loader section entry, write it out. */
dc810e39
AM		 5408 if (h->ldsym != NULL)
5409 {
5410 struct internal_ldsym *ldsym;
5411 bfd *impbfd;
252b5132 5412
dc810e39 5413 ldsym = h->ldsym;
252b5132 5414
dc810e39
AM		 5415 if (h->root.type == bfd_link_hash_undefined
5416 || h->root.type == bfd_link_hash_undefweak)
5417 {
252b5132 5418
dc810e39
AM		 5419 ldsym->l_value = 0;
5420 ldsym->l_scnum = N_UNDEF;
5421 ldsym->l_smtype = XTY_ER;
5422 impbfd = h->root.u.undef.abfd;
252b5132 5423
dc810e39
AM		 5424 }
5425 else if (h->root.type == bfd_link_hash_defined
5426 || h->root.type == bfd_link_hash_defweak)
5427 {
252b5132 5428
dc810e39 5429 asection *sec;
252b5132 5430
dc810e39
AM		 5431 sec = h->root.u.def.section;
5432 ldsym->l_value = (sec->output_section->vma
5433 + sec->output_offset
5434 + h->root.u.def.value);
5435 ldsym->l_scnum = sec->output_section->target_index;
5436 ldsym->l_smtype = XTY_SD;
5437 impbfd = sec->owner;
252b5132 5438
dc810e39
AM		 5439 }
5440 else
5441 abort ();
252b5132 5442
dc810e39
AM		 5443 if (((h->flags & XCOFF_DEF_REGULAR) == 0
5444 && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
5445 || (h->flags & XCOFF_IMPORT) != 0)
5446 {
5447 /* Clear l_smtype
5448 Import symbols are defined so the check above will make
5449 the l_smtype XTY_SD. But this is not correct, it should
5450 be cleared. */
5451 ldsym->l_smtype |= L_IMPORT;
5452 }
252b5132 5453
dc810e39
AM		 5454 if (((h->flags & XCOFF_DEF_REGULAR) != 0
5455 && (h->flags & XCOFF_DEF_DYNAMIC) != 0)
5456 || (h->flags & XCOFF_EXPORT) != 0)
5457 {
5458 ldsym->l_smtype |= L_EXPORT;
5459 }
beb1bf64 5460
dc810e39
AM		 5461 if ((h->flags & XCOFF_ENTRY) != 0)
5462 {
5463 ldsym->l_smtype |= L_ENTRY;
5464 }
5465
5466 if ((h->flags & XCOFF_RTINIT) != 0)
5467 {
5468 ldsym->l_smtype = XTY_SD;
5469 }
5470
5471 ldsym->l_smclas = h->smclas;
5472
5473 if (ldsym->l_smtype & L_IMPORT)
5474 {
5475 if ((h->root.type == bfd_link_hash_defined
5476 || h->root.type == bfd_link_hash_defweak)
5477 && (h->root.u.def.value != 0))
5478 {
5479 ldsym->l_smclas = XMC_XO;
5480 }
5481 else if ((h->flags & (XCOFF_SYSCALL32 | XCOFF_SYSCALL64)) ==
5482 (XCOFF_SYSCALL32 | XCOFF_SYSCALL64))
5483 {
5484 ldsym->l_smclas = XMC_SV3264;
5485 }
5486 else if (h->flags & XCOFF_SYSCALL32)
5487 {
5488 ldsym->l_smclas = XMC_SV;
5489 }
5490 else if (h->flags & XCOFF_SYSCALL64)
5491 {
5492 ldsym->l_smclas = XMC_SV64;
5493 }
5494 }
5495
5496 if (ldsym->l_ifile == -(bfd_size_type) 1)
5497 {
5498 ldsym->l_ifile = 0;
5499 }
5500 else if (ldsym->l_ifile == 0)
5501 {
5502 if ((ldsym->l_smtype & L_IMPORT) == 0)
5503 {
5504 ldsym->l_ifile = 0;
5505 }
5506 else if (impbfd == NULL)
5507 {
5508 ldsym->l_ifile = 0;
5509 }
5510 else
5511 {
5512 BFD_ASSERT (impbfd->xvec == output_bfd->xvec);
5513 ldsym->l_ifile = xcoff_data (impbfd)->import_file_id;
5514 }
5515 }
5516
5517 ldsym->l_parm = 0;
5518
5519 BFD_ASSERT (h->ldindx >= 0);
5520
5521 bfd_xcoff_swap_ldsym_out (output_bfd, ldsym,
5522 (finfo->ldsym +
5523 (h->ldindx - 3)
5524 * bfd_xcoff_ldsymsz(finfo->output_bfd)));
5525 h->ldsym = NULL;
beb1bf64 5526 }
dc810e39 5527
252b5132 5528 /* If this symbol needs global linkage code, write it out. */
dc810e39
AM		 5529 if (h->root.type == bfd_link_hash_defined
5530 && (h->root.u.def.section
5531 == xcoff_hash_table (finfo->info)->linkage_section))
5532 {
5533 bfd_byte *p;
5534 bfd_vma tocoff;
5535 unsigned int i;
beb1bf64 5536
dc810e39 5537 p = h->root.u.def.section->contents + h->root.u.def.value;
beb1bf64 5538
dc810e39
AM		 5539 /* The first instruction in the global linkage code loads a
5540 specific TOC element. */
5541 tocoff = (h->descriptor->toc_section->output_section->vma
5542 + h->descriptor->toc_section->output_offset
5543 - xcoff_data (output_bfd)->toc);
beb1bf64 5544
dc810e39
AM		 5545 if ((h->descriptor->flags & XCOFF_SET_TOC) != 0)
5546 {
5547 tocoff += h->descriptor->u.toc_offset;
5548 }
5549
5550
5551 /* The first instruction in the glink code needs to be
5552 cooked to to hold the correct offset in the toc. The
5553 rest are just output raw. */
5554 bfd_put_32 (output_bfd,
5555 bfd_xcoff_glink_code(output_bfd, 0) | (tocoff & 0xffff), p);
5556
5557 /* Start with i == 1 to get past the first instruction done above
5558 The /4 is because the glink code is in bytes and we are going
5559 4 at a pop. */
5560 for (i = 1; i < bfd_xcoff_glink_code_size(output_bfd) / 4; i++)
5561 {
5562 bfd_put_32 (output_bfd,
5563 (bfd_vma) bfd_xcoff_glink_code(output_bfd, i),
5564 &p[4 * i]);
5565 }
beb1bf64 5566 }
252b5132
RH		 5567
5568 /* If we created a TOC entry for this symbol, write out the required
5569 relocs. */
5570 if ((h->flags & XCOFF_SET_TOC) != 0)
5571 {
5572 asection *tocsec;
5573 asection *osec;
5574 int oindx;
5575 struct internal_reloc *irel;
5576 struct internal_ldrel ldrel;
5577 struct internal_syment irsym;
5578 union internal_auxent iraux;
5579
5580 tocsec = h->toc_section;
5581 osec = tocsec->output_section;
5582 oindx = osec->target_index;
5583 irel = finfo->section_info[oindx].relocs + osec->reloc_count;
5584 irel->r_vaddr = (osec->vma
5585 + tocsec->output_offset
5586 + h->u.toc_offset);
beb1bf64
TR		 5587
5588
dc810e39
AM		 5589 if (h->indx >= 0)
5590 {
5591 irel->r_symndx = h->indx;
5592 }
5593 else
5594 {
5595 h->indx = -2;
5596 irel->r_symndx = obj_raw_syment_count (output_bfd);
5597 }
5598
beb1bf64
TR		 5599 BFD_ASSERT (h->ldindx >= 0);
5600
dc810e39
AM		 5601 /* Initialize the aux union here instead of closer to when it is
5602 written out below because the length of the csect depends on
5603 whether the output is 32 or 64 bit. */
beb1bf64
TR		 5604 memset (&iraux, 0, sizeof iraux);
5605 iraux.x_csect.x_smtyp = XTY_SD;
5606 /* iraux.x_csect.x_scnlen.l = 4 or 8, see below */
5607 iraux.x_csect.x_smclas = XMC_TC;
5608
dc810e39
AM		 5609 /* 32 bit uses a 32 bit R_POS to do the relocations
5610 64 bit uses a 64 bit R_POS to do the relocations
beb1bf64 5611
dc810e39
AM		 5612 Also needs to change the csect size : 4 for 32 bit, 8 for 64 bit
5613
5614 Which one is determined by the backend. */
5615 if (bfd_xcoff_is_xcoff64 (output_bfd))
5616 {
5617 irel->r_size = 63;
5618 iraux.x_csect.x_scnlen.l = 8;
5619 }
5620 else if (bfd_xcoff_is_xcoff32 (output_bfd))
5621 {
5622 irel->r_size = 31;
5623 iraux.x_csect.x_scnlen.l = 4;
5624 }
5625 else
5626 {
b34976b6 5627 return FALSE;
dc810e39 5628 }
252b5132 5629 irel->r_type = R_POS;
252b5132
RH		 5630 finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
5631 ++osec->reloc_count;
5632
252b5132
RH		 5633 ldrel.l_vaddr = irel->r_vaddr;
5634 ldrel.l_symndx = h->ldindx;
beb1bf64 5635 ldrel.l_rtype = (irel->r_size << 8) | R_POS;
252b5132 5636 ldrel.l_rsecnm = oindx;
beb1bf64
TR		 5637 bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
5638 finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
252b5132 5639
dc810e39
AM		 5640 /* We need to emit a symbol to define a csect which holds
5641 the reloc. */
5642 if (finfo->info->strip != strip_all)
5643 {
252b5132 5644
dc810e39
AM		 5645 result = bfd_xcoff_put_symbol_name (output_bfd, finfo->strtab,
5646 &irsym, h->root.root.string);
b34976b6
AM		 5647 if (!result)
5648 return FALSE;
252b5132 5649
dc810e39
AM		 5650 irsym.n_value = irel->r_vaddr;
5651 irsym.n_scnum = osec->target_index;
5652 irsym.n_sclass = C_HIDEXT;
5653 irsym.n_type = T_NULL;
5654 irsym.n_numaux = 1;
252b5132 5655
dc810e39
AM		 5656 bfd_coff_swap_sym_out (output_bfd, (PTR) &irsym, (PTR) outsym);
5657 outsym += bfd_coff_symesz (output_bfd);
252b5132 5658
dc810e39
AM		 5659 /* note : iraux is initialized above */
5660 bfd_coff_swap_aux_out (output_bfd, (PTR) &iraux, T_NULL, C_HIDEXT,
5661 0, 1, (PTR) outsym);
5662 outsym += bfd_coff_auxesz (output_bfd);
252b5132 5663
dc810e39
AM		 5664 if (h->indx >= 0)
5665 {
5666 /* We aren't going to write out the symbols below, so we
252b5132 5667 need to write them out now. */
dc810e39
AM		 5668 pos = obj_sym_filepos (output_bfd);
5669 pos += (obj_raw_syment_count (output_bfd)
5670 * bfd_coff_symesz (output_bfd));
5671 amt = outsym - finfo->outsyms;
5672 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
5673 || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
b34976b6 5674 return FALSE;
252b5132
RH		 5675 obj_raw_syment_count (output_bfd) +=
5676 (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd);
5677
5678 outsym = finfo->outsyms;
5679 }
5680 }
5681 }
5682
dc810e39
AM		 5683 /* If this symbol is a specially defined function descriptor, write
5684 it out. The first word is the address of the function code
5685 itself, the second word is the address of the TOC, and the third
5686 word is zero.
5687
5688 32 bit vs 64 bit
5689 The addresses for the 32 bit will take 4 bytes and the addresses
5690 for 64 bit will take 8 bytes. Similar for the relocs. This type
5691 of logic was also done above to create a TOC entry in
5692 xcoff_write_global_symbol. */
252b5132
RH		 5693 if ((h->flags & XCOFF_DESCRIPTOR) != 0
5694 && h->root.type == bfd_link_hash_defined
5695 && (h->root.u.def.section
5696 == xcoff_hash_table (finfo->info)->descriptor_section))
5697 {
5698 asection *sec;
5699 asection *osec;
5700 int oindx;
5701 bfd_byte *p;
5702 struct xcoff_link_hash_entry *hentry;
5703 asection *esec;
5704 struct internal_reloc *irel;
5705 struct internal_ldrel ldrel;
5706 asection *tsec;
beb1bf64
TR		 5707 unsigned int reloc_size, byte_size;
5708
dc810e39
AM		 5709 if (bfd_xcoff_is_xcoff64 (output_bfd))
5710 {
5711 reloc_size = 63;
5712 byte_size = 8;
5713 }
5714 else if (bfd_xcoff_is_xcoff32 (output_bfd))
5715 {
5716 reloc_size = 31;
5717 byte_size = 4;
5718 }
5719 else
5720 {
b34976b6 5721 return FALSE;
dc810e39 5722 }
252b5132
RH		 5723
5724 sec = h->root.u.def.section;
5725 osec = sec->output_section;
5726 oindx = osec->target_index;
5727 p = sec->contents + h->root.u.def.value;
5728
5729 hentry = h->descriptor;
5730 BFD_ASSERT (hentry != NULL
5731 && (hentry->root.type == bfd_link_hash_defined
5732 || hentry->root.type == bfd_link_hash_defweak));
5733 esec = hentry->root.u.def.section;
252b5132
RH		 5734
5735 irel = finfo->section_info[oindx].relocs + osec->reloc_count;
5736 irel->r_vaddr = (osec->vma
5737 + sec->output_offset
5738 + h->root.u.def.value);
5739 irel->r_symndx = esec->output_section->target_index;
5740 irel->r_type = R_POS;
beb1bf64 5741 irel->r_size = reloc_size;
252b5132
RH		 5742 finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
5743 ++osec->reloc_count;
5744
5745 ldrel.l_vaddr = irel->r_vaddr;
5746 if (strcmp (esec->output_section->name, ".text") == 0)
5747 ldrel.l_symndx = 0;
5748 else if (strcmp (esec->output_section->name, ".data") == 0)
5749 ldrel.l_symndx = 1;
5750 else if (strcmp (esec->output_section->name, ".bss") == 0)
5751 ldrel.l_symndx = 2;
5752 else
5753 {
5754 (*_bfd_error_handler)
5755 (_("%s: loader reloc in unrecognized section `%s'"),
5756 bfd_get_filename (output_bfd),
5757 esec->output_section->name);
5758 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 5759 return FALSE;
252b5132 5760 }
beb1bf64 5761 ldrel.l_rtype = (reloc_size << 8) | R_POS;
252b5132 5762 ldrel.l_rsecnm = oindx;
beb1bf64
TR		 5763 bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
5764 finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
5765
dc810e39
AM		 5766 /* There are three items to write out,
5767 the address of the code
5768 the address of the toc anchor
5769 the environment pointer.
5770 We are ignoring the environment pointer. So set it to zero. */
5771 if (bfd_xcoff_is_xcoff64 (output_bfd))
5772 {
5773 bfd_put_64 (output_bfd,
5774 (esec->output_section->vma + esec->output_offset
5775 + hentry->root.u.def.value),
5776 p);
5777 bfd_put_64 (output_bfd, xcoff_data (output_bfd)->toc, p + 8);
5778 bfd_put_64 (output_bfd, (bfd_vma) 0, p + 16);
5779 }
5780 else
5781 {
5782 /* 32 bit backend
5783 This logic was already called above so the error case where
5784 the backend is neither has already been checked. */
5785 bfd_put_32 (output_bfd,
5786 (esec->output_section->vma + esec->output_offset
5787 + hentry->root.u.def.value),
5788 p);
5789 bfd_put_32 (output_bfd, xcoff_data (output_bfd)->toc, p + 4);
5790 bfd_put_32 (output_bfd, (bfd_vma) 0, p + 8);
5791 }
5792
252b5132
RH		 5793 tsec = coff_section_from_bfd_index (output_bfd,
5794 xcoff_data (output_bfd)->sntoc);
5795
5796 ++irel;
5797 irel->r_vaddr = (osec->vma
5798 + sec->output_offset
5799 + h->root.u.def.value
beb1bf64 5800 + byte_size);
252b5132
RH		 5801 irel->r_symndx = tsec->output_section->target_index;
5802 irel->r_type = R_POS;
beb1bf64 5803 irel->r_size = reloc_size;
252b5132
RH		 5804 finfo->section_info[oindx].rel_hashes[osec->reloc_count] = NULL;
5805 ++osec->reloc_count;
5806
5807 ldrel.l_vaddr = irel->r_vaddr;
5808 if (strcmp (tsec->output_section->name, ".text") == 0)
5809 ldrel.l_symndx = 0;
5810 else if (strcmp (tsec->output_section->name, ".data") == 0)
5811 ldrel.l_symndx = 1;
5812 else if (strcmp (tsec->output_section->name, ".bss") == 0)
5813 ldrel.l_symndx = 2;
5814 else
5815 {
5816 (*_bfd_error_handler)
5817 (_("%s: loader reloc in unrecognized section `%s'"),
5818 bfd_get_filename (output_bfd),
5819 tsec->output_section->name);
5820 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 5821 return FALSE;
252b5132 5822 }
beb1bf64 5823 ldrel.l_rtype = (reloc_size << 8) | R_POS;
252b5132 5824 ldrel.l_rsecnm = oindx;
beb1bf64
TR		 5825 bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
5826 finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
252b5132
RH		 5827 }
5828
5829 if (h->indx >= 0 || finfo->info->strip == strip_all)
5830 {
5831 BFD_ASSERT (outsym == finfo->outsyms);
b34976b6 5832 return TRUE;
252b5132
RH		 5833 }
5834
5835 if (h->indx != -2
5836 && (finfo->info->strip == strip_all
5837 || (finfo->info->strip == strip_some
dc810e39 5838 && bfd_hash_lookup (finfo->info->keep_hash, h->root.root.string,
b34976b6 5839 FALSE, FALSE) == NULL)))
252b5132
RH		 5840 {
5841 BFD_ASSERT (outsym == finfo->outsyms);
b34976b6 5842 return TRUE;
252b5132
RH		 5843 }
5844
5845 if (h->indx != -2
5846 && (h->flags & (XCOFF_REF_REGULAR | XCOFF_DEF_REGULAR)) == 0)
5847 {
5848 BFD_ASSERT (outsym == finfo->outsyms);
b34976b6 5849 return TRUE;
252b5132
RH		 5850 }
5851
5852 memset (&aux, 0, sizeof aux);
5853
5854 h->indx = obj_raw_syment_count (output_bfd);
5855
dc810e39 5856 result = bfd_xcoff_put_symbol_name (output_bfd, finfo->strtab, &isym,
beb1bf64 5857 h->root.root.string);
b34976b6
AM		 5858 if (!result)
5859 return FALSE;
252b5132
RH		 5860
5861 if (h->root.type == bfd_link_hash_undefined
5862 || h->root.type == bfd_link_hash_undefweak)
5863 {
5864 isym.n_value = 0;
5865 isym.n_scnum = N_UNDEF;
5866 isym.n_sclass = C_EXT;
5867 aux.x_csect.x_smtyp = XTY_ER;
5868 }
5869 else if ((h->root.type == bfd_link_hash_defined
5870 || h->root.type == bfd_link_hash_defweak)
5871 && h->smclas == XMC_XO)
5872 {
5873 BFD_ASSERT (bfd_is_abs_section (h->root.u.def.section));
5874 isym.n_value = h->root.u.def.value;
5875 isym.n_scnum = N_UNDEF;
5876 isym.n_sclass = C_EXT;
5877 aux.x_csect.x_smtyp = XTY_ER;
5878 }
5879 else if (h->root.type == bfd_link_hash_defined
5880 || h->root.type == bfd_link_hash_defweak)
5881 {
5882 struct xcoff_link_size_list *l;
5883
5884 isym.n_value = (h->root.u.def.section->output_section->vma
5885 + h->root.u.def.section->output_offset
5886 + h->root.u.def.value);
0121a3da
AM		 5887 if (bfd_is_abs_section (h->root.u.def.section->output_section))
5888 isym.n_scnum = N_ABS;
5889 else
5890 isym.n_scnum = h->root.u.def.section->output_section->target_index;
252b5132
RH		 5891 isym.n_sclass = C_HIDEXT;
5892 aux.x_csect.x_smtyp = XTY_SD;
5893
5894 if ((h->flags & XCOFF_HAS_SIZE) != 0)
5895 {
5896 for (l = xcoff_hash_table (finfo->info)->size_list;
5897 l != NULL;
5898 l = l->next)
5899 {
5900 if (l->h == h)
5901 {
5902 aux.x_csect.x_scnlen.l = l->size;
5903 break;
5904 }
5905 }
5906 }
5907 }
5908 else if (h->root.type == bfd_link_hash_common)
5909 {
5910 isym.n_value = (h->root.u.c.p->section->output_section->vma
5911 + h->root.u.c.p->section->output_offset);
5912 isym.n_scnum = h->root.u.c.p->section->output_section->target_index;
5913 isym.n_sclass = C_EXT;
5914 aux.x_csect.x_smtyp = XTY_CM;
5915 aux.x_csect.x_scnlen.l = h->root.u.c.size;
5916 }
5917 else
5918 abort ();
5919
5920 isym.n_type = T_NULL;
5921 isym.n_numaux = 1;
5922
5923 bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym);
5924 outsym += bfd_coff_symesz (output_bfd);
5925
5926 aux.x_csect.x_smclas = h->smclas;
252b5132
RH		 5927 bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, isym.n_sclass, 0, 1,
5928 (PTR) outsym);
5929 outsym += bfd_coff_auxesz (output_bfd);
5930
5931 if ((h->root.type == bfd_link_hash_defined
5932 || h->root.type == bfd_link_hash_defweak)
5933 && h->smclas != XMC_XO)
5934 {
5935 /* We just output an SD symbol. Now output an LD symbol. */
5936
5937 h->indx += 2;
5938
5939 isym.n_sclass = C_EXT;
5940 bfd_coff_swap_sym_out (output_bfd, (PTR) &isym, (PTR) outsym);
5941 outsym += bfd_coff_symesz (output_bfd);
5942
5943 aux.x_csect.x_smtyp = XTY_LD;
5944 aux.x_csect.x_scnlen.l = obj_raw_syment_count (output_bfd);
252b5132
RH		 5945 bfd_coff_swap_aux_out (output_bfd, (PTR) &aux, T_NULL, C_EXT, 0, 1,
5946 (PTR) outsym);
5947 outsym += bfd_coff_auxesz (output_bfd);
5948 }
5949
dc810e39
AM		 5950 pos = obj_sym_filepos (output_bfd);
5951 pos += obj_raw_syment_count (output_bfd) * bfd_coff_symesz (output_bfd);
5952 amt = outsym - finfo->outsyms;
5953 if (bfd_seek (output_bfd, pos, SEEK_SET) != 0
5954 || bfd_bwrite (finfo->outsyms, amt, output_bfd) != amt)
b34976b6 5955 return FALSE;
252b5132
RH		 5956 obj_raw_syment_count (output_bfd) +=
5957 (outsym - finfo->outsyms) / bfd_coff_symesz (output_bfd);
5958
b34976b6 5959 return TRUE;
252b5132
RH		 5960}
5961
5962/* Handle a link order which is supposed to generate a reloc. */
5963
b34976b6 5964static bfd_boolean
252b5132
RH		 5965xcoff_reloc_link_order (output_bfd, finfo, output_section, link_order)
5966 bfd *output_bfd;
5967 struct xcoff_final_link_info *finfo;
5968 asection *output_section;
5969 struct bfd_link_order *link_order;
5970{
5971 reloc_howto_type *howto;
5972 struct xcoff_link_hash_entry *h;
5973 asection *hsec;
5974 bfd_vma hval;
5975 bfd_vma addend;
5976 struct internal_reloc *irel;
5977 struct xcoff_link_hash_entry **rel_hash_ptr;
5978 struct internal_ldrel ldrel;
5979
5980 if (link_order->type == bfd_section_reloc_link_order)
5981 {
5982 /* We need to somehow locate a symbol in the right section. The
b34976b6
AM		 5983 symbol must either have a value of zero, or we must adjust
5984 the addend by the value of the symbol. FIXME: Write this
5985 when we need it. The old linker couldn't handle this anyhow. */
252b5132
RH		 5986 abort ();
5987 }
5988
5989 howto = bfd_reloc_type_lookup (output_bfd, link_order->u.reloc.p->reloc);
5990 if (howto == NULL)
5991 {
5992 bfd_set_error (bfd_error_bad_value);
b34976b6 5993 return FALSE;
252b5132
RH		 5994 }
5995
5996 h = ((struct xcoff_link_hash_entry *)
5997 bfd_wrapped_link_hash_lookup (output_bfd, finfo->info,
5998 link_order->u.reloc.p->u.name,
b34976b6 5999 FALSE, FALSE, TRUE));
252b5132
RH		 6000 if (h == NULL)
6001 {
6002 if (! ((*finfo->info->callbacks->unattached_reloc)
6003 (finfo->info, link_order->u.reloc.p->u.name, (bfd *) NULL,
6004 (asection *) NULL, (bfd_vma) 0)))
b34976b6
AM		 6005 return FALSE;
6006 return TRUE;
252b5132
RH		 6007 }
6008
6009 if (h->root.type == bfd_link_hash_common)
6010 {
6011 hsec = h->root.u.c.p->section;
6012 hval = 0;
6013 }
6014 else if (h->root.type == bfd_link_hash_defined
6015 || h->root.type == bfd_link_hash_defweak)
6016 {
6017 hsec = h->root.u.def.section;
6018 hval = h->root.u.def.value;
6019 }
6020 else
6021 {
6022 hsec = NULL;
6023 hval = 0;
6024 }
6025
6026 addend = link_order->u.reloc.p->addend;
6027 if (hsec != NULL)
6028 addend += (hsec->output_section->vma
6029 + hsec->output_offset
6030 + hval);
6031
6032 if (addend != 0)
6033 {
6034 bfd_size_type size;
6035 bfd_byte *buf;
6036 bfd_reloc_status_type rstat;
b34976b6 6037 bfd_boolean ok;
252b5132
RH		 6038
6039 size = bfd_get_reloc_size (howto);
6040 buf = (bfd_byte *) bfd_zmalloc (size);
6041 if (buf == NULL)
b34976b6 6042 return FALSE;
252b5132
RH		 6043
6044 rstat = _bfd_relocate_contents (howto, output_bfd, addend, buf);
6045 switch (rstat)
6046 {
6047 case bfd_reloc_ok:
6048 break;
6049 default:
6050 case bfd_reloc_outofrange:
6051 abort ();
6052 case bfd_reloc_overflow:
6053 if (! ((*finfo->info->callbacks->reloc_overflow)
6054 (finfo->info, link_order->u.reloc.p->u.name,
6055 howto->name, addend, (bfd *) NULL, (asection *) NULL,
6056 (bfd_vma) 0)))
6057 {
6058 free (buf);
b34976b6 6059 return FALSE;
252b5132
RH		 6060 }
6061 break;
6062 }
6063 ok = bfd_set_section_contents (output_bfd, output_section, (PTR) buf,
6064 (file_ptr) link_order->offset, size);
6065 free (buf);
6066 if (! ok)
b34976b6 6067 return FALSE;
252b5132
RH		 6068 }
6069
6070 /* Store the reloc information in the right place. It will get
6071 swapped and written out at the end of the final_link routine. */
6072
6073 irel = (finfo->section_info[output_section->target_index].relocs
6074 + output_section->reloc_count);
6075 rel_hash_ptr = (finfo->section_info[output_section->target_index].rel_hashes
6076 + output_section->reloc_count);
6077
6078 memset (irel, 0, sizeof (struct internal_reloc));
6079 *rel_hash_ptr = NULL;
6080
6081 irel->r_vaddr = output_section->vma + link_order->offset;
6082
6083 if (h->indx >= 0)
6084 irel->r_symndx = h->indx;
6085 else
6086 {
6087 /* Set the index to -2 to force this symbol to get written out. */
6088 h->indx = -2;
6089 *rel_hash_ptr = h;
6090 irel->r_symndx = 0;
6091 }
6092
6093 irel->r_type = howto->type;
6094 irel->r_size = howto->bitsize - 1;
6095 if (howto->complain_on_overflow == complain_overflow_signed)
6096 irel->r_size |= 0x80;
6097
6098 ++output_section->reloc_count;
6099
6100 /* Now output the reloc to the .loader section. */
6101
6102 ldrel.l_vaddr = irel->r_vaddr;
6103
6104 if (hsec != NULL)
6105 {
6106 const char *secname;
6107
6108 secname = hsec->output_section->name;
6109
6110 if (strcmp (secname, ".text") == 0)
6111 ldrel.l_symndx = 0;
6112 else if (strcmp (secname, ".data") == 0)
6113 ldrel.l_symndx = 1;
6114 else if (strcmp (secname, ".bss") == 0)
6115 ldrel.l_symndx = 2;
6116 else
6117 {
6118 (*_bfd_error_handler)
6119 (_("%s: loader reloc in unrecognized section `%s'"),
6120 bfd_get_filename (output_bfd), secname);
6121 bfd_set_error (bfd_error_nonrepresentable_section);
b34976b6 6122 return FALSE;
252b5132
RH		 6123 }
6124 }
6125 else
6126 {
6127 if (h->ldindx < 0)
6128 {
6129 (*_bfd_error_handler)
6130 (_("%s: `%s' in loader reloc but not loader sym"),
6131 bfd_get_filename (output_bfd),
6132 h->root.root.string);
6133 bfd_set_error (bfd_error_bad_value);
b34976b6 6134 return FALSE;
252b5132
RH		 6135 }
6136 ldrel.l_symndx = h->ldindx;
6137 }
6138
6139 ldrel.l_rtype = (irel->r_size << 8) | irel->r_type;
6140 ldrel.l_rsecnm = output_section->target_index;
beb1bf64
TR		 6141 bfd_xcoff_swap_ldrel_out (output_bfd, &ldrel, finfo->ldrel);
6142 finfo->ldrel += bfd_xcoff_ldrelsz(output_bfd);
252b5132 6143
b34976b6 6144 return TRUE;
252b5132
RH		 6145}
6146
6147/* Sort relocs by VMA. This is called via qsort. */
6148
6149static int
6150xcoff_sort_relocs (p1, p2)
6151 const PTR p1;
6152 const PTR p2;
6153{
6154 const struct internal_reloc *r1 = (const struct internal_reloc *) p1;
6155 const struct internal_reloc *r2 = (const struct internal_reloc *) p2;
6156
6157 if (r1->r_vaddr > r2->r_vaddr)
6158 return 1;
6159 else if (r1->r_vaddr < r2->r_vaddr)
6160 return -1;
6161 else
6162 return 0;
6163}
6164
252b5132 6165
252b5132 6166
252b5132 6167
GDB Binutils - Deliverables
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