* tc-hppa.c (pa_ip): Reject match for '#' immediate if not pa20.
[deliverable/binutils-gdb.git] / bfd / i386linux.c
CommitLineData
252b5132 1/* BFD back-end for linux flavored i386 a.out binaries.
9553c638
AM
2 Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1999, 2001, 2002, 2003,
3 2004 Free Software Foundation, Inc.
252b5132
RH
4
5This file is part of BFD, the Binary File Descriptor library.
6
7This program is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2 of the License, or
10(at your option) any later version.
11
12This program is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with this program; if not, write to the Free Software
3e110533 19Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH
20
21#define TARGET_PAGE_SIZE 4096
22#define ZMAGIC_DISK_BLOCK_SIZE 1024
23#define SEGMENT_SIZE TARGET_PAGE_SIZE
24#define TEXT_START_ADDR 0x0
25#define N_SHARED_LIB(x) 0
252b5132
RH
26
27#define MACHTYPE_OK(mtype) ((mtype) == M_386 || (mtype) == M_UNKNOWN)
28
29#include "bfd.h"
30#include "sysdep.h"
31#include "libbfd.h"
32#include "aout/aout64.h"
33#include "aout/stab_gnu.h"
34#include "aout/ar.h"
35#include "libaout.h" /* BFD a.out internal data structures */
36
37#define DEFAULT_ARCH bfd_arch_i386
e43d48cc
AM
38
39/* Do not "beautify" the CONCAT* macro args. Traditional C will not
40 remove whitespace added here, and thus will fail to concatenate
41 the tokens. */
42#define MY(OP) CONCAT2 (i386linux_,OP)
252b5132
RH
43#define TARGETNAME "a.out-i386-linux"
44
45extern const bfd_target MY(vec);
46
47/* We always generate QMAGIC files in preference to ZMAGIC files. It
48 would be possible to make this a linker option, if that ever
49 becomes important. */
50
51static void MY_final_link_callback
52 PARAMS ((bfd *, file_ptr *, file_ptr *, file_ptr *));
b34976b6 53static bfd_boolean i386linux_bfd_final_link
252b5132 54 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 55static bfd_boolean i386linux_write_object_contents PARAMS ((bfd *));
252b5132 56
b34976b6 57static bfd_boolean
252b5132
RH
58i386linux_bfd_final_link (abfd, info)
59 bfd *abfd;
60 struct bfd_link_info *info;
61{
62 obj_aout_subformat (abfd) = q_magic_format;
63 return NAME(aout,final_link) (abfd, info, MY_final_link_callback);
64}
65
66#define MY_bfd_final_link i386linux_bfd_final_link
67
68/* Set the machine type correctly. */
69
b34976b6 70static bfd_boolean
252b5132
RH
71i386linux_write_object_contents (abfd)
72 bfd *abfd;
73{
74 struct external_exec exec_bytes;
75 struct internal_exec *execp = exec_hdr (abfd);
76
77 N_SET_MACHTYPE (*execp, M_386);
78
79 obj_reloc_entry_size (abfd) = RELOC_STD_SIZE;
80
81 WRITE_HEADERS(abfd, execp);
82
b34976b6 83 return TRUE;
252b5132
RH
84}
85
86#define MY_write_object_contents i386linux_write_object_contents
87\f
88/* Code to link against Linux a.out shared libraries. */
89
90/* See if a symbol name is a reference to the global offset table. */
91
92#ifndef GOT_REF_PREFIX
93#define GOT_REF_PREFIX "__GOT_"
94#endif
95
96#define IS_GOT_SYM(name) \
97 (strncmp (name, GOT_REF_PREFIX, sizeof GOT_REF_PREFIX - 1) == 0)
98
99/* See if a symbol name is a reference to the procedure linkage table. */
100
101#ifndef PLT_REF_PREFIX
102#define PLT_REF_PREFIX "__PLT_"
103#endif
104
105#define IS_PLT_SYM(name) \
106 (strncmp (name, PLT_REF_PREFIX, sizeof PLT_REF_PREFIX - 1) == 0)
107
108/* This string is used to generate specialized error messages. */
109
110#ifndef NEEDS_SHRLIB
111#define NEEDS_SHRLIB "__NEEDS_SHRLIB_"
112#endif
113
114/* This special symbol is a set vector that contains a list of
7dee875e 115 pointers to fixup tables. It will be present in any dynamically
252b5132
RH
116 linked file. The linker generated fixup table should also be added
117 to the list, and it should always appear in the second slot (the
118 first one is a dummy with a magic number that is defined in
119 crt0.o). */
120
121#ifndef SHARABLE_CONFLICTS
122#define SHARABLE_CONFLICTS "__SHARABLE_CONFLICTS__"
123#endif
124
125/* We keep a list of fixups. The terminology is a bit strange, but
126 each fixup contains two 32 bit numbers. A regular fixup contains
127 an address and a pointer, and at runtime we should store the
128 address at the location pointed to by the pointer. A builtin fixup
129 contains two pointers, and we should read the address using one
130 pointer and store it at the location pointed to by the other
131 pointer. Builtin fixups come into play when we have duplicate
132 __GOT__ symbols for the same variable. The builtin fixup will copy
133 the GOT pointer from one over into the other. */
134
135struct fixup
136{
137 struct fixup *next;
138 struct linux_link_hash_entry *h;
139 bfd_vma value;
140
141 /* Nonzero if this is a jump instruction that needs to be fixed,
142 zero if this is just a pointer */
143 char jump;
144
145 char builtin;
146};
147
148/* We don't need a special hash table entry structure, but we do need
149 to keep some information between linker passes, so we use a special
150 hash table. */
151
152struct linux_link_hash_entry
153{
154 struct aout_link_hash_entry root;
155};
156
157struct linux_link_hash_table
158{
159 struct aout_link_hash_table root;
160
161 /* First dynamic object found in link. */
162 bfd *dynobj;
163
164 /* Number of fixups. */
165 size_t fixup_count;
166
167 /* Number of builtin fixups. */
168 size_t local_builtins;
169
170 /* List of fixups. */
171 struct fixup *fixup_list;
172};
173
174static struct bfd_hash_entry *linux_link_hash_newfunc
175 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
176static struct bfd_link_hash_table *linux_link_hash_table_create
177 PARAMS ((bfd *));
178static struct fixup *new_fixup
179 PARAMS ((struct bfd_link_info *, struct linux_link_hash_entry *,
180 bfd_vma, int));
b34976b6 181static bfd_boolean linux_link_create_dynamic_sections
252b5132 182 PARAMS ((bfd *, struct bfd_link_info *));
b34976b6 183static bfd_boolean linux_add_one_symbol
252b5132 184 PARAMS ((struct bfd_link_info *, bfd *, const char *, flagword, asection *,
b34976b6 185 bfd_vma, const char *, bfd_boolean, bfd_boolean,
252b5132 186 struct bfd_link_hash_entry **));
b34976b6 187static bfd_boolean linux_tally_symbols
252b5132 188 PARAMS ((struct linux_link_hash_entry *, PTR));
b34976b6 189static bfd_boolean linux_finish_dynamic_link
252b5132
RH
190 PARAMS ((bfd *, struct bfd_link_info *));
191
192/* Routine to create an entry in an Linux link hash table. */
193
194static struct bfd_hash_entry *
195linux_link_hash_newfunc (entry, table, string)
196 struct bfd_hash_entry *entry;
197 struct bfd_hash_table *table;
198 const char *string;
199{
200 struct linux_link_hash_entry *ret = (struct linux_link_hash_entry *) entry;
201
202 /* Allocate the structure if it has not already been allocated by a
203 subclass. */
204 if (ret == (struct linux_link_hash_entry *) NULL)
205 ret = ((struct linux_link_hash_entry *)
206 bfd_hash_allocate (table, sizeof (struct linux_link_hash_entry)));
207 if (ret == NULL)
208 return (struct bfd_hash_entry *) ret;
209
210 /* Call the allocation method of the superclass. */
211 ret = ((struct linux_link_hash_entry *)
212 NAME(aout,link_hash_newfunc) ((struct bfd_hash_entry *) ret,
213 table, string));
214 if (ret != NULL)
215 {
216 /* Set local fields; there aren't any. */
217 }
218
219 return (struct bfd_hash_entry *) ret;
220}
221
222/* Create a Linux link hash table. */
223
224static struct bfd_link_hash_table *
225linux_link_hash_table_create (abfd)
226 bfd *abfd;
227{
228 struct linux_link_hash_table *ret;
dc810e39 229 bfd_size_type amt = sizeof (struct linux_link_hash_table);
252b5132 230
dc810e39 231 ret = (struct linux_link_hash_table *) bfd_alloc (abfd, amt);
252b5132
RH
232 if (ret == (struct linux_link_hash_table *) NULL)
233 return (struct bfd_link_hash_table *) NULL;
234 if (! NAME(aout,link_hash_table_init) (&ret->root, abfd,
235 linux_link_hash_newfunc))
236 {
237 free (ret);
238 return (struct bfd_link_hash_table *) NULL;
239 }
240
241 ret->dynobj = NULL;
242 ret->fixup_count = 0;
243 ret->local_builtins = 0;
244 ret->fixup_list = NULL;
245
246 return &ret->root.root;
247}
248
249/* Look up an entry in a Linux link hash table. */
250
251#define linux_link_hash_lookup(table, string, create, copy, follow) \
252 ((struct linux_link_hash_entry *) \
253 aout_link_hash_lookup (&(table)->root, (string), (create), (copy),\
254 (follow)))
255
256/* Traverse a Linux link hash table. */
257
258#define linux_link_hash_traverse(table, func, info) \
259 (aout_link_hash_traverse \
260 (&(table)->root, \
b34976b6 261 (bfd_boolean (*) PARAMS ((struct aout_link_hash_entry *, PTR))) (func), \
252b5132
RH
262 (info)))
263
264/* Get the Linux link hash table from the info structure. This is
265 just a cast. */
266
267#define linux_hash_table(p) ((struct linux_link_hash_table *) ((p)->hash))
268
269/* Store the information for a new fixup. */
270
271static struct fixup *
272new_fixup (info, h, value, builtin)
273 struct bfd_link_info *info;
274 struct linux_link_hash_entry *h;
275 bfd_vma value;
276 int builtin;
277{
278 struct fixup *f;
279
280 f = (struct fixup *) bfd_hash_allocate (&info->hash->table,
281 sizeof (struct fixup));
282 if (f == NULL)
283 return f;
284 f->next = linux_hash_table (info)->fixup_list;
285 linux_hash_table (info)->fixup_list = f;
286 f->h = h;
287 f->value = value;
288 f->builtin = builtin;
289 f->jump = 0;
290 ++linux_hash_table (info)->fixup_count;
291 return f;
292}
293
294/* We come here once we realize that we are going to link to a shared
295 library. We need to create a special section that contains the
296 fixup table, and we ultimately need to add a pointer to this into
297 the set vector for SHARABLE_CONFLICTS. At this point we do not
298 know the size of the section, but that's OK - we just need to
299 create it for now. */
300
b34976b6 301static bfd_boolean
252b5132
RH
302linux_link_create_dynamic_sections (abfd, info)
303 bfd *abfd;
7442e600 304 struct bfd_link_info *info ATTRIBUTE_UNUSED;
252b5132
RH
305{
306 flagword flags;
307 register asection *s;
308
309 /* Note that we set the SEC_IN_MEMORY flag. */
310 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
311
312 /* We choose to use the name ".linux-dynamic" for the fixup table.
313 Why not? */
314 s = bfd_make_section (abfd, ".linux-dynamic");
315 if (s == NULL
316 || ! bfd_set_section_flags (abfd, s, flags)
317 || ! bfd_set_section_alignment (abfd, s, 2))
b34976b6 318 return FALSE;
eea6121a 319 s->size = 0;
252b5132
RH
320 s->contents = 0;
321
b34976b6 322 return TRUE;
252b5132
RH
323}
324
325/* Function to add a single symbol to the linker hash table. This is
326 a wrapper around _bfd_generic_link_add_one_symbol which handles the
327 tweaking needed for dynamic linking support. */
328
b34976b6 329static bfd_boolean
252b5132
RH
330linux_add_one_symbol (info, abfd, name, flags, section, value, string,
331 copy, collect, hashp)
332 struct bfd_link_info *info;
333 bfd *abfd;
334 const char *name;
335 flagword flags;
336 asection *section;
337 bfd_vma value;
338 const char *string;
b34976b6
AM
339 bfd_boolean copy;
340 bfd_boolean collect;
252b5132
RH
341 struct bfd_link_hash_entry **hashp;
342{
343 struct linux_link_hash_entry *h;
b34976b6 344 bfd_boolean insert;
252b5132
RH
345
346 /* Look up and see if we already have this symbol in the hash table.
347 If we do, and the defining entry is from a shared library, we
348 need to create the dynamic sections.
349
350 FIXME: What if abfd->xvec != info->hash->creator? We may want to
351 be able to link Linux a.out and ELF objects together, but serious
352 confusion is possible. */
353
b34976b6 354 insert = FALSE;
252b5132 355
1049f94e 356 if (! info->relocatable
252b5132
RH
357 && linux_hash_table (info)->dynobj == NULL
358 && strcmp (name, SHARABLE_CONFLICTS) == 0
359 && (flags & BSF_CONSTRUCTOR) != 0
360 && abfd->xvec == info->hash->creator)
361 {
362 if (! linux_link_create_dynamic_sections (abfd, info))
b34976b6 363 return FALSE;
252b5132 364 linux_hash_table (info)->dynobj = abfd;
b34976b6 365 insert = TRUE;
252b5132
RH
366 }
367
368 if (bfd_is_abs_section (section)
369 && abfd->xvec == info->hash->creator)
370 {
b34976b6
AM
371 h = linux_link_hash_lookup (linux_hash_table (info), name, FALSE,
372 FALSE, FALSE);
252b5132
RH
373 if (h != NULL
374 && (h->root.root.type == bfd_link_hash_defined
375 || h->root.root.type == bfd_link_hash_defweak))
376 {
377 struct fixup *f;
378
379 if (hashp != NULL)
380 *hashp = (struct bfd_link_hash_entry *) h;
381
382 f = new_fixup (info, h, value, ! IS_PLT_SYM (name));
383 if (f == NULL)
b34976b6 384 return FALSE;
252b5132
RH
385 f->jump = IS_PLT_SYM (name);
386
b34976b6 387 return TRUE;
252b5132
RH
388 }
389 }
390
391 /* Do the usual procedure for adding a symbol. */
392 if (! _bfd_generic_link_add_one_symbol (info, abfd, name, flags, section,
393 value, string, copy, collect,
394 hashp))
b34976b6 395 return FALSE;
252b5132
RH
396
397 /* Insert a pointer to our table in the set vector. The dynamic
398 linker requires this information */
399 if (insert)
400 {
401 asection *s;
402
403 /* Here we do our special thing to add the pointer to the
404 dynamic section in the SHARABLE_CONFLICTS set vector. */
405 s = bfd_get_section_by_name (linux_hash_table (info)->dynobj,
406 ".linux-dynamic");
407 BFD_ASSERT (s != NULL);
408
409 if (! (_bfd_generic_link_add_one_symbol
410 (info, linux_hash_table (info)->dynobj, SHARABLE_CONFLICTS,
dc810e39 411 BSF_GLOBAL | BSF_CONSTRUCTOR, s, (bfd_vma) 0, NULL,
b34976b6
AM
412 FALSE, FALSE, NULL)))
413 return FALSE;
252b5132
RH
414 }
415
b34976b6 416 return TRUE;
252b5132
RH
417}
418
419/* We will crawl the hash table and come here for every global symbol.
420 We will examine each entry and see if there are indications that we
421 need to add a fixup. There are two possible cases - one is where
422 you have duplicate definitions of PLT or GOT symbols - these will
423 have already been caught and added as "builtin" fixups. If we find
424 that the corresponding non PLT/GOT symbol is also present, we
425 convert it to a regular fixup instead.
426
427 This function is called via linux_link_hash_traverse. */
428
b34976b6 429static bfd_boolean
252b5132
RH
430linux_tally_symbols (h, data)
431 struct linux_link_hash_entry *h;
432 PTR data;
433{
434 struct bfd_link_info *info = (struct bfd_link_info *) data;
435 struct fixup *f, *f1;
436 int is_plt;
437 struct linux_link_hash_entry *h1, *h2;
b34976b6 438 bfd_boolean exists;
252b5132 439
e92d460e
AM
440 if (h->root.root.type == bfd_link_hash_warning)
441 h = (struct linux_link_hash_entry *) h->root.root.u.i.link;
442
252b5132
RH
443 if (h->root.root.type == bfd_link_hash_undefined
444 && strncmp (h->root.root.root.string, NEEDS_SHRLIB,
445 sizeof NEEDS_SHRLIB - 1) == 0)
446 {
447 const char *name;
448 char *p;
449 char *alloc = NULL;
450
451 name = h->root.root.root.string + sizeof NEEDS_SHRLIB - 1;
452 p = strrchr (name, '_');
453 if (p != NULL)
dc810e39 454 alloc = (char *) bfd_malloc ((bfd_size_type) strlen (name) + 1);
252b5132
RH
455
456 if (p == NULL || alloc == NULL)
457 (*_bfd_error_handler) (_("Output file requires shared library `%s'\n"),
458 name);
459 else
460 {
461 strcpy (alloc, name);
462 p = strrchr (alloc, '_');
463 *p++ = '\0';
464 (*_bfd_error_handler)
465 (_("Output file requires shared library `%s.so.%s'\n"),
466 alloc, p);
467 free (alloc);
468 }
469
470 abort ();
471 }
472
473 /* If this symbol is not a PLT/GOT, we do not even need to look at it */
474 is_plt = IS_PLT_SYM (h->root.root.root.string);
475
476 if (is_plt || IS_GOT_SYM (h->root.root.root.string))
477 {
478 /* Look up this symbol twice. Once just as a regular lookup,
479 and then again following all of the indirect links until we
480 reach a real symbol. */
481 h1 = linux_link_hash_lookup (linux_hash_table (info),
482 (h->root.root.root.string
483 + sizeof PLT_REF_PREFIX - 1),
b34976b6 484 FALSE, FALSE, TRUE);
252b5132 485 /* h2 does not follow indirect symbols. */
dc810e39 486 h2 = linux_link_hash_lookup (linux_hash_table (info),
252b5132
RH
487 (h->root.root.root.string
488 + sizeof PLT_REF_PREFIX - 1),
b34976b6 489 FALSE, FALSE, FALSE);
252b5132
RH
490
491 /* The real symbol must exist but if it is also an ABS symbol,
492 there is no need to have a fixup. This is because they both
493 came from the same library. If on the other hand, we had to
494 use an indirect symbol to get to the real symbol, we add the
495 fixup anyway, since there are cases where these symbols come
496 from different shared libraries */
497 if (h1 != NULL
498 && (((h1->root.root.type == bfd_link_hash_defined
499 || h1->root.root.type == bfd_link_hash_defweak)
500 && ! bfd_is_abs_section (h1->root.root.u.def.section))
501 || h2->root.root.type == bfd_link_hash_indirect))
502 {
503 /* See if there is a "builtin" fixup already present
504 involving this symbol. If so, convert it to a regular
505 fixup. In the end, this relaxes some of the requirements
506 about the order of performing fixups. */
b34976b6 507 exists = FALSE;
252b5132
RH
508 for (f1 = linux_hash_table (info)->fixup_list;
509 f1 != NULL;
510 f1 = f1->next)
511 {
512 if ((f1->h != h && f1->h != h1)
513 || (! f1->builtin && ! f1->jump))
514 continue;
515 if (f1->h == h1)
b34976b6 516 exists = TRUE;
252b5132
RH
517 if (! exists
518 && bfd_is_abs_section (h->root.root.u.def.section))
519 {
520 f = new_fixup (info, h1, f1->h->root.root.u.def.value, 0);
521 f->jump = is_plt;
522 }
523 f1->h = h1;
524 f1->jump = is_plt;
525 f1->builtin = 0;
b34976b6 526 exists = TRUE;
252b5132
RH
527 }
528 if (! exists
529 && bfd_is_abs_section (h->root.root.u.def.section))
530 {
531 f = new_fixup (info, h1, h->root.root.u.def.value, 0);
532 if (f == NULL)
533 {
534 /* FIXME: No way to return error. */
535 abort ();
536 }
537 f->jump = is_plt;
538 }
539 }
540
541 /* Quick and dirty way of stripping these symbols from the
542 symtab. */
543 if (bfd_is_abs_section (h->root.root.u.def.section))
b34976b6 544 h->root.written = TRUE;
252b5132
RH
545 }
546
b34976b6 547 return TRUE;
252b5132
RH
548}
549
550/* This is called to set the size of the .linux-dynamic section is.
551 It is called by the Linux linker emulation before_allocation
552 routine. We have finished reading all of the input files, and now
553 we just scan the hash tables to find out how many additional fixups
554 are required. */
555
b34976b6 556bfd_boolean
252b5132
RH
557bfd_i386linux_size_dynamic_sections (output_bfd, info)
558 bfd *output_bfd;
559 struct bfd_link_info *info;
560{
561 struct fixup *f;
562 asection *s;
563
564 if (output_bfd->xvec != &MY(vec))
b34976b6 565 return TRUE;
252b5132
RH
566
567 /* First find the fixups... */
568 linux_link_hash_traverse (linux_hash_table (info),
569 linux_tally_symbols,
570 (PTR) info);
571
572 /* If there are builtin fixups, leave room for a marker. This is
573 used by the dynamic linker so that it knows that all that follow
574 are builtin fixups instead of regular fixups. */
575 for (f = linux_hash_table (info)->fixup_list; f != NULL; f = f->next)
576 {
577 if (f->builtin)
578 {
579 ++linux_hash_table (info)->fixup_count;
580 ++linux_hash_table (info)->local_builtins;
581 break;
582 }
583 }
584
585 if (linux_hash_table (info)->dynobj == NULL)
586 {
587 if (linux_hash_table (info)->fixup_count > 0)
588 abort ();
b34976b6 589 return TRUE;
252b5132
RH
590 }
591
592 /* Allocate memory for our fixup table. We will fill it in later. */
593 s = bfd_get_section_by_name (linux_hash_table (info)->dynobj,
594 ".linux-dynamic");
595 if (s != NULL)
596 {
eea6121a
AM
597 s->size = linux_hash_table (info)->fixup_count + 1;
598 s->size *= 8;
599 s->contents = (bfd_byte *) bfd_zalloc (output_bfd, s->size);
252b5132 600 if (s->contents == NULL)
b34976b6 601 return FALSE;
252b5132
RH
602 }
603
b34976b6 604 return TRUE;
252b5132
RH
605}
606
607/* We come here once we are ready to actually write the fixup table to
608 the output file. Scan the fixup tables and so forth and generate
609 the stuff we need. */
610
b34976b6 611static bfd_boolean
252b5132
RH
612linux_finish_dynamic_link (output_bfd, info)
613 bfd *output_bfd;
614 struct bfd_link_info *info;
615{
616 asection *s, *os, *is;
617 bfd_byte *fixup_table;
618 struct linux_link_hash_entry *h;
619 struct fixup *f;
620 unsigned int new_addr;
621 int section_offset;
622 unsigned int fixups_written;
623
624 if (linux_hash_table (info)->dynobj == NULL)
b34976b6 625 return TRUE;
252b5132
RH
626
627 s = bfd_get_section_by_name (linux_hash_table (info)->dynobj,
628 ".linux-dynamic");
629 BFD_ASSERT (s != NULL);
630 os = s->output_section;
631 fixups_written = 0;
632
633#ifdef LINUX_LINK_DEBUG
dc810e39 634 printf ("Fixup table file offset: %x VMA: %x\n",
252b5132
RH
635 os->filepos + s->output_offset,
636 os->vma + s->output_offset);
637#endif
638
639 fixup_table = s->contents;
dc810e39
AM
640 bfd_put_32 (output_bfd,
641 (bfd_vma) linux_hash_table (info)->fixup_count, fixup_table);
252b5132
RH
642 fixup_table += 4;
643
644 /* Fill in fixup table. */
645 for (f = linux_hash_table (info)->fixup_list; f != NULL; f = f->next)
646 {
647 if (f->builtin)
648 continue;
649
650 if (f->h->root.root.type != bfd_link_hash_defined
651 && f->h->root.root.type != bfd_link_hash_defweak)
652 {
653 (*_bfd_error_handler)
654 (_("Symbol %s not defined for fixups\n"),
655 f->h->root.root.root.string);
656 continue;
657 }
658
659 is = f->h->root.root.u.def.section;
660 section_offset = is->output_section->vma + is->output_offset;
661 new_addr = f->h->root.root.u.def.value + section_offset;
662
663#ifdef LINUX_LINK_DEBUG
664 printf ("Fixup(%d) %s: %x %x\n",f->jump, f->h->root.root.string,
665 new_addr, f->value);
666#endif
667
668 if (f->jump)
669 {
670 /* Relative address */
dc810e39
AM
671 new_addr = new_addr - (f->value + 5);
672 bfd_put_32 (output_bfd, (bfd_vma) new_addr, fixup_table);
252b5132
RH
673 fixup_table += 4;
674 bfd_put_32 (output_bfd, f->value + 1, fixup_table);
675 fixup_table += 4;
676 }
677 else
678 {
dc810e39 679 bfd_put_32 (output_bfd, (bfd_vma) new_addr, fixup_table);
252b5132
RH
680 fixup_table += 4;
681 bfd_put_32 (output_bfd, f->value, fixup_table);
682 fixup_table += 4;
683 }
684 ++fixups_written;
685 }
686
687 if (linux_hash_table (info)->local_builtins != 0)
688 {
689 /* Special marker so we know to switch to the other type of fixup */
dc810e39 690 bfd_put_32 (output_bfd, (bfd_vma) 0, fixup_table);
252b5132 691 fixup_table += 4;
dc810e39 692 bfd_put_32 (output_bfd, (bfd_vma) 0, fixup_table);
252b5132
RH
693 fixup_table += 4;
694 ++fixups_written;
695 for (f = linux_hash_table (info)->fixup_list; f != NULL; f = f->next)
696 {
697 if (! f->builtin)
698 continue;
699
700 if (f->h->root.root.type != bfd_link_hash_defined
701 && f->h->root.root.type != bfd_link_hash_defweak)
702 {
703 (*_bfd_error_handler)
704 (_("Symbol %s not defined for fixups\n"),
705 f->h->root.root.root.string);
706 continue;
707 }
708
709 is = f->h->root.root.u.def.section;
710 section_offset = is->output_section->vma + is->output_offset;
711 new_addr = f->h->root.root.u.def.value + section_offset;
712
713#ifdef LINUX_LINK_DEBUG
714 printf ("Fixup(B) %s: %x %x\n", f->h->root.root.string,
715 new_addr, f->value);
716#endif
717
dc810e39 718 bfd_put_32 (output_bfd, (bfd_vma) new_addr, fixup_table);
252b5132
RH
719 fixup_table += 4;
720 bfd_put_32 (output_bfd, f->value, fixup_table);
721 fixup_table += 4;
722 ++fixups_written;
723 }
724 }
725
726 if (linux_hash_table (info)->fixup_count != fixups_written)
727 {
728 (*_bfd_error_handler) (_("Warning: fixup count mismatch\n"));
729 while (linux_hash_table (info)->fixup_count > fixups_written)
730 {
dc810e39 731 bfd_put_32 (output_bfd, (bfd_vma) 0, fixup_table);
252b5132 732 fixup_table += 4;
dc810e39 733 bfd_put_32 (output_bfd, (bfd_vma) 0, fixup_table);
252b5132
RH
734 fixup_table += 4;
735 ++fixups_written;
736 }
737 }
738
dc810e39 739 h = linux_link_hash_lookup (linux_hash_table (info),
252b5132 740 "__BUILTIN_FIXUPS__",
b34976b6 741 FALSE, FALSE, FALSE);
252b5132
RH
742
743 if (h != NULL
744 && (h->root.root.type == bfd_link_hash_defined
745 || h->root.root.type == bfd_link_hash_defweak))
746 {
747 is = h->root.root.u.def.section;
748 section_offset = is->output_section->vma + is->output_offset;
749 new_addr = h->root.root.u.def.value + section_offset;
750
751#ifdef LINUX_LINK_DEBUG
752 printf ("Builtin fixup table at %x\n", new_addr);
753#endif
754
dc810e39 755 bfd_put_32 (output_bfd, (bfd_vma) new_addr, fixup_table);
252b5132
RH
756 }
757 else
dc810e39 758 bfd_put_32 (output_bfd, (bfd_vma) 0, fixup_table);
252b5132 759
dc810e39
AM
760 if (bfd_seek (output_bfd, (file_ptr) (os->filepos + s->output_offset),
761 SEEK_SET) != 0)
b34976b6 762 return FALSE;
252b5132 763
eea6121a 764 if (bfd_bwrite ((PTR) s->contents, s->size, output_bfd) != s->size)
b34976b6 765 return FALSE;
252b5132 766
b34976b6 767 return TRUE;
252b5132
RH
768}
769
770#define MY_bfd_link_hash_table_create linux_link_hash_table_create
771#define MY_add_one_symbol linux_add_one_symbol
772#define MY_finish_dynamic_link linux_finish_dynamic_link
773
774#define MY_zmagic_contiguous 1
775
776#include "aout-target.h"
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