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* config/tc-mips.c (support_64bit_objects): Define for OBJ_ELF only.
[deliverable/binutils-gdb.git] / bfd / elf32-arm.h
CommitLineData
252b5132 1/* 32-bit ELF support for ARM
7898deda 2 Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
252b5132
RH		 3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
252b5132
RH		 20typedef unsigned long int insn32;
21typedef unsigned short int insn16;
22
23static boolean elf32_arm_set_private_flags
24 PARAMS ((bfd *, flagword));
25static boolean elf32_arm_copy_private_bfd_data
26 PARAMS ((bfd *, bfd *));
27static boolean elf32_arm_merge_private_bfd_data
28 PARAMS ((bfd *, bfd *));
29static boolean elf32_arm_print_private_bfd_data
30 PARAMS ((bfd *, PTR));
f21f3fe0 31static int elf32_arm_get_symbol_type
252b5132
RH		 32 PARAMS (( Elf_Internal_Sym *, int));
33static struct bfd_link_hash_table *elf32_arm_link_hash_table_create
34 PARAMS ((bfd *));
35static bfd_reloc_status_type elf32_arm_final_link_relocate
780a67af
NC		 36 PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, bfd_byte *,
37 Elf_Internal_Rela *, bfd_vma, struct bfd_link_info *, asection *,
dc810e39 38 const char *, int, struct elf_link_hash_entry *));
252b5132
RH		 39static insn32 insert_thumb_branch
40 PARAMS ((insn32, int));
41static struct elf_link_hash_entry *find_thumb_glue
917583ad 42 PARAMS ((struct bfd_link_info *, const char *, bfd *));
252b5132 43static struct elf_link_hash_entry *find_arm_glue
917583ad 44 PARAMS ((struct bfd_link_info *, const char *, bfd *));
252b5132
RH		 45static void record_arm_to_thumb_glue
46 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
47static void record_thumb_to_arm_glue
48 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
ba96a88f
NC		 49static void elf32_arm_post_process_headers
50 PARAMS ((bfd *, struct bfd_link_info *));
bcbdc74c
NC		 51static int elf32_arm_to_thumb_stub
52 PARAMS ((struct bfd_link_info *, const char *, bfd *, bfd *, asection *,
53 bfd_byte *, asection *, bfd_vma, bfd_signed_vma, bfd_vma));
54static int elf32_thumb_to_arm_stub
55 PARAMS ((struct bfd_link_info *, const char *, bfd *, bfd *, asection *,
56 bfd_byte *, asection *, bfd_vma, bfd_signed_vma, bfd_vma));
917583ad
NC		 57static boolean elf32_arm_relocate_section
58 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
59 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
60static asection * elf32_arm_gc_mark_hook
61 PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
62 struct elf_link_hash_entry *, Elf_Internal_Sym *));
63static boolean elf32_arm_gc_sweep_hook
64 PARAMS ((bfd *, struct bfd_link_info *, asection *,
65 const Elf_Internal_Rela *));
66static boolean elf32_arm_check_relocs
67 PARAMS ((bfd *, struct bfd_link_info *, asection *,
68 const Elf_Internal_Rela *));
69static boolean elf32_arm_find_nearest_line
70 PARAMS ((bfd *, asection *, asymbol **, bfd_vma, const char **,
71 const char **, unsigned int *));
72static boolean elf32_arm_adjust_dynamic_symbol
73 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
74static boolean elf32_arm_size_dynamic_sections
75 PARAMS ((bfd *, struct bfd_link_info *));
76static boolean elf32_arm_finish_dynamic_symbol
77 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
78 Elf_Internal_Sym *));
79static boolean elf32_arm_finish_dynamic_sections
80 PARAMS ((bfd *, struct bfd_link_info *));
81static struct bfd_hash_entry * elf32_arm_link_hash_newfunc
82 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
83#ifdef USE_REL
84static void arm_add_to_rel
85 PARAMS ((bfd *, bfd_byte *, reloc_howto_type *, bfd_signed_vma));
86#endif
252b5132 87
917583ad
NC		 88boolean bfd_elf32_arm_allocate_interworking_sections
89 PARAMS ((struct bfd_link_info *));
90boolean bfd_elf32_arm_get_bfd_for_interworking
91 PARAMS ((bfd *, struct bfd_link_info *));
92boolean bfd_elf32_arm_process_before_allocation
93 PARAMS ((bfd *, struct bfd_link_info *, int));
99e4ae17 94static enum elf_reloc_type_class elf32_arm_reloc_type_class
f51e552e 95 PARAMS ((const Elf_Internal_Rela *));
99e4ae17 96
fd2ec330 97#define INTERWORK_FLAG(abfd) (elf_elfheader (abfd)->e_flags & EF_ARM_INTERWORK)
9b485d32 98
252b5132
RH		 99/* The linker script knows the section names for placement.
100 The entry_names are used to do simple name mangling on the stubs.
101 Given a function name, and its type, the stub can be found. The
9b485d32 102 name can be changed. The only requirement is the %s be present. */
252b5132
RH		 103#define THUMB2ARM_GLUE_SECTION_NAME ".glue_7t"
104#define THUMB2ARM_GLUE_ENTRY_NAME "__%s_from_thumb"
105
106#define ARM2THUMB_GLUE_SECTION_NAME ".glue_7"
107#define ARM2THUMB_GLUE_ENTRY_NAME "__%s_from_arm"
108
109/* The name of the dynamic interpreter. This is put in the .interp
110 section. */
111#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
112
113/* The size in bytes of an entry in the procedure linkage table. */
252b5132
RH		 114#define PLT_ENTRY_SIZE 16
115
116/* The first entry in a procedure linkage table looks like
117 this. It is set up so that any shared library function that is
59f2c4e7 118 called before the relocation has been set up calls the dynamic
9b485d32 119 linker first. */
dc810e39 120static const bfd_vma elf32_arm_plt0_entry [PLT_ENTRY_SIZE / 4] =
917583ad
NC		 121 {
122 0xe52de004, /* str lr, [sp, #-4]! */
123 0xe59fe010, /* ldr lr, [pc, #16] */
124 0xe08fe00e, /* add lr, pc, lr */
125 0xe5bef008 /* ldr pc, [lr, #8]! */
126 };
252b5132
RH		 127
128/* Subsequent entries in a procedure linkage table look like
129 this. */
dc810e39 130static const bfd_vma elf32_arm_plt_entry [PLT_ENTRY_SIZE / 4] =
99e4ae17 131 {
917583ad
NC		 132 0xe59fc004, /* ldr ip, [pc, #4] */
133 0xe08fc00c, /* add ip, pc, ip */
134 0xe59cf000, /* ldr pc, [ip] */
135 0x00000000 /* offset to symbol in got */
136 };
252b5132 137
252b5132
RH		 138/* The ARM linker needs to keep track of the number of relocs that it
139 decides to copy in check_relocs for each symbol. This is so that
140 it can discard PC relative relocs if it doesn't need them when
141 linking with -Bsymbolic. We store the information in a field
142 extending the regular ELF linker hash table. */
143
144/* This structure keeps track of the number of PC relative relocs we
145 have copied for a given symbol. */
252b5132 146struct elf32_arm_pcrel_relocs_copied
917583ad
NC		 147 {
148 /* Next section. */
149 struct elf32_arm_pcrel_relocs_copied * next;
150 /* A section in dynobj. */
151 asection * section;
152 /* Number of relocs copied in this section. */
153 bfd_size_type count;
154 };
252b5132 155
ba96a88f 156/* Arm ELF linker hash entry. */
252b5132 157struct elf32_arm_link_hash_entry
917583ad
NC		 158 {
159 struct elf_link_hash_entry root;
252b5132 160
917583ad
NC		 161 /* Number of PC relative relocs copied for this symbol. */
162 struct elf32_arm_pcrel_relocs_copied * pcrel_relocs_copied;
163 };
252b5132
RH		 164
165/* Declare this now that the above structures are defined. */
252b5132
RH		 166static boolean elf32_arm_discard_copies
167 PARAMS ((struct elf32_arm_link_hash_entry *, PTR));
168
169/* Traverse an arm ELF linker hash table. */
252b5132
RH		 170#define elf32_arm_link_hash_traverse(table, func, info) \
171 (elf_link_hash_traverse \
172 (&(table)->root, \
173 (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
174 (info)))
175
176/* Get the ARM elf linker hash table from a link_info structure. */
177#define elf32_arm_hash_table(info) \
178 ((struct elf32_arm_link_hash_table *) ((info)->hash))
179
9b485d32 180/* ARM ELF linker hash table. */
252b5132 181struct elf32_arm_link_hash_table
917583ad
NC		 182 {
183 /* The main hash table. */
184 struct elf_link_hash_table root;
252b5132 185
917583ad 186 /* The size in bytes of the section containg the Thumb-to-ARM glue. */
dc810e39 187 bfd_size_type thumb_glue_size;
252b5132 188
917583ad 189 /* The size in bytes of the section containg the ARM-to-Thumb glue. */
dc810e39 190 bfd_size_type arm_glue_size;
252b5132 191
917583ad
NC		 192 /* An arbitary input BFD chosen to hold the glue sections. */
193 bfd * bfd_of_glue_owner;
ba96a88f 194
917583ad
NC		 195 /* A boolean indicating whether knowledge of the ARM's pipeline
196 length should be applied by the linker. */
197 int no_pipeline_knowledge;
198 };
252b5132 199
780a67af
NC		 200/* Create an entry in an ARM ELF linker hash table. */
201
202static struct bfd_hash_entry *
203elf32_arm_link_hash_newfunc (entry, table, string)
204 struct bfd_hash_entry * entry;
205 struct bfd_hash_table * table;
206 const char * string;
207{
208 struct elf32_arm_link_hash_entry * ret =
209 (struct elf32_arm_link_hash_entry *) entry;
210
211 /* Allocate the structure if it has not already been allocated by a
212 subclass. */
213 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
214 ret = ((struct elf32_arm_link_hash_entry *)
215 bfd_hash_allocate (table,
216 sizeof (struct elf32_arm_link_hash_entry)));
217 if (ret == (struct elf32_arm_link_hash_entry *) NULL)
218 return (struct bfd_hash_entry *) ret;
219
220 /* Call the allocation method of the superclass. */
221 ret = ((struct elf32_arm_link_hash_entry *)
222 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
223 table, string));
224 if (ret != (struct elf32_arm_link_hash_entry *) NULL)
225 ret->pcrel_relocs_copied = NULL;
226
227 return (struct bfd_hash_entry *) ret;
228}
229
9b485d32 230/* Create an ARM elf linker hash table. */
252b5132
RH		 231
232static struct bfd_link_hash_table *
233elf32_arm_link_hash_table_create (abfd)
234 bfd *abfd;
235{
236 struct elf32_arm_link_hash_table *ret;
dc810e39 237 bfd_size_type amt = sizeof (struct elf32_arm_link_hash_table);
252b5132 238
dc810e39 239 ret = (struct elf32_arm_link_hash_table *) bfd_alloc (abfd, amt);
252b5132
RH		 240 if (ret == (struct elf32_arm_link_hash_table *) NULL)
241 return NULL;
242
243 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
780a67af 244 elf32_arm_link_hash_newfunc))
252b5132
RH		 245 {
246 bfd_release (abfd, ret);
247 return NULL;
248 }
249
250 ret->thumb_glue_size = 0;
251 ret->arm_glue_size = 0;
252 ret->bfd_of_glue_owner = NULL;
ba96a88f 253 ret->no_pipeline_knowledge = 0;
252b5132
RH		 254
255 return &ret->root.root;
256}
257
9b485d32
NC		 258/* Locate the Thumb encoded calling stub for NAME. */
259
252b5132
RH		 260static struct elf_link_hash_entry *
261find_thumb_glue (link_info, name, input_bfd)
262 struct bfd_link_info *link_info;
917583ad 263 const char *name;
252b5132
RH		 264 bfd *input_bfd;
265{
266 char *tmp_name;
267 struct elf_link_hash_entry *hash;
268 struct elf32_arm_link_hash_table *hash_table;
269
270 /* We need a pointer to the armelf specific hash table. */
271 hash_table = elf32_arm_hash_table (link_info);
272
dc810e39
AM		 273 tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
274 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 275
276 BFD_ASSERT (tmp_name);
277
278 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
279
280 hash = elf_link_hash_lookup
281 (&(hash_table)->root, tmp_name, false, false, true);
282
283 if (hash == NULL)
284 /* xgettext:c-format */
8f615d07
AM		 285 (*_bfd_error_handler) (_("%s: unable to find THUMB glue '%s' for `%s'"),
286 bfd_archive_filename (input_bfd), tmp_name, name);
252b5132
RH		 287
288 free (tmp_name);
289
290 return hash;
291}
292
9b485d32
NC		 293/* Locate the ARM encoded calling stub for NAME. */
294
252b5132
RH		 295static struct elf_link_hash_entry *
296find_arm_glue (link_info, name, input_bfd)
297 struct bfd_link_info *link_info;
917583ad 298 const char *name;
252b5132
RH		 299 bfd *input_bfd;
300{
301 char *tmp_name;
302 struct elf_link_hash_entry *myh;
303 struct elf32_arm_link_hash_table *hash_table;
304
305 /* We need a pointer to the elfarm specific hash table. */
306 hash_table = elf32_arm_hash_table (link_info);
307
dc810e39
AM		 308 tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
309 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 310
311 BFD_ASSERT (tmp_name);
312
313 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
314
315 myh = elf_link_hash_lookup
316 (&(hash_table)->root, tmp_name, false, false, true);
317
318 if (myh == NULL)
319 /* xgettext:c-format */
8f615d07
AM		 320 (*_bfd_error_handler) (_("%s: unable to find ARM glue '%s' for `%s'"),
321 bfd_archive_filename (input_bfd), tmp_name, name);
252b5132
RH		 322
323 free (tmp_name);
324
325 return myh;
326}
327
9b485d32 328/* ARM->Thumb glue:
252b5132
RH		 329
330 .arm
331 __func_from_arm:
332 ldr r12, __func_addr
333 bx r12
334 __func_addr:
9b485d32 335 .word func @ behave as if you saw a ARM_32 reloc. */
252b5132
RH		 336
337#define ARM2THUMB_GLUE_SIZE 12
338static const insn32 a2t1_ldr_insn = 0xe59fc000;
339static const insn32 a2t2_bx_r12_insn = 0xe12fff1c;
340static const insn32 a2t3_func_addr_insn = 0x00000001;
341
9b485d32 342/* Thumb->ARM: Thumb->(non-interworking aware) ARM
252b5132
RH		 343
344 .thumb .thumb
345 .align 2 .align 2
346 __func_from_thumb: __func_from_thumb:
347 bx pc push {r6, lr}
348 nop ldr r6, __func_addr
349 .arm mov lr, pc
350 __func_change_to_arm: bx r6
351 b func .arm
352 __func_back_to_thumb:
353 ldmia r13! {r6, lr}
354 bx lr
355 __func_addr:
9b485d32 356 .word func */
252b5132
RH		 357
358#define THUMB2ARM_GLUE_SIZE 8
359static const insn16 t2a1_bx_pc_insn = 0x4778;
360static const insn16 t2a2_noop_insn = 0x46c0;
361static const insn32 t2a3_b_insn = 0xea000000;
362
363static const insn16 t2a1_push_insn = 0xb540;
364static const insn16 t2a2_ldr_insn = 0x4e03;
365static const insn16 t2a3_mov_insn = 0x46fe;
366static const insn16 t2a4_bx_insn = 0x4730;
367static const insn32 t2a5_pop_insn = 0xe8bd4040;
368static const insn32 t2a6_bx_insn = 0xe12fff1e;
369
370boolean
371bfd_elf32_arm_allocate_interworking_sections (info)
372 struct bfd_link_info * info;
373{
374 asection * s;
375 bfd_byte * foo;
376 struct elf32_arm_link_hash_table * globals;
377
378 globals = elf32_arm_hash_table (info);
379
380 BFD_ASSERT (globals != NULL);
381
382 if (globals->arm_glue_size != 0)
383 {
384 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
385
dc810e39
AM		 386 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
387 ARM2THUMB_GLUE_SECTION_NAME);
252b5132
RH		 388
389 BFD_ASSERT (s != NULL);
390
dc810e39
AM		 391 foo = (bfd_byte *) bfd_alloc (globals->bfd_of_glue_owner,
392 globals->arm_glue_size);
252b5132
RH		 393
394 s->_raw_size = s->_cooked_size = globals->arm_glue_size;
395 s->contents = foo;
396 }
397
398 if (globals->thumb_glue_size != 0)
399 {
400 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
401
402 s = bfd_get_section_by_name
403 (globals->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
404
405 BFD_ASSERT (s != NULL);
406
dc810e39
AM		 407 foo = (bfd_byte *) bfd_alloc (globals->bfd_of_glue_owner,
408 globals->thumb_glue_size);
252b5132
RH		 409
410 s->_raw_size = s->_cooked_size = globals->thumb_glue_size;
411 s->contents = foo;
412 }
413
414 return true;
415}
416
417static void
418record_arm_to_thumb_glue (link_info, h)
419 struct bfd_link_info * link_info;
420 struct elf_link_hash_entry * h;
421{
422 const char * name = h->root.root.string;
63b0f745 423 asection * s;
252b5132
RH		 424 char * tmp_name;
425 struct elf_link_hash_entry * myh;
426 struct elf32_arm_link_hash_table * globals;
dc810e39 427 bfd_vma val;
252b5132
RH		 428
429 globals = elf32_arm_hash_table (link_info);
430
431 BFD_ASSERT (globals != NULL);
432 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
433
434 s = bfd_get_section_by_name
435 (globals->bfd_of_glue_owner, ARM2THUMB_GLUE_SECTION_NAME);
436
252b5132
RH		 437 BFD_ASSERT (s != NULL);
438
dc810e39
AM		 439 tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
440 + strlen (ARM2THUMB_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 441
442 BFD_ASSERT (tmp_name);
443
444 sprintf (tmp_name, ARM2THUMB_GLUE_ENTRY_NAME, name);
445
446 myh = elf_link_hash_lookup
447 (&(globals)->root, tmp_name, false, false, true);
448
449 if (myh != NULL)
450 {
9b485d32 451 /* We've already seen this guy. */
252b5132 452 free (tmp_name);
9b485d32 453 return;
252b5132
RH		 454 }
455
456 /* The only trick here is using hash_table->arm_glue_size as the value. Even
457 though the section isn't allocated yet, this is where we will be putting
458 it. */
dc810e39
AM		 459 val = globals->arm_glue_size + 1;
460 _bfd_generic_link_add_one_symbol (link_info, globals->bfd_of_glue_owner,
461 tmp_name, BSF_GLOBAL, s, val,
252b5132
RH		 462 NULL, true, false,
463 (struct bfd_link_hash_entry **) &myh);
464
465 free (tmp_name);
466
467 globals->arm_glue_size += ARM2THUMB_GLUE_SIZE;
468
469 return;
470}
471
472static void
473record_thumb_to_arm_glue (link_info, h)
474 struct bfd_link_info *link_info;
475 struct elf_link_hash_entry *h;
476{
477 const char *name = h->root.root.string;
63b0f745 478 asection *s;
252b5132
RH		 479 char *tmp_name;
480 struct elf_link_hash_entry *myh;
481 struct elf32_arm_link_hash_table *hash_table;
482 char bind;
dc810e39 483 bfd_vma val;
252b5132
RH		 484
485 hash_table = elf32_arm_hash_table (link_info);
486
487 BFD_ASSERT (hash_table != NULL);
488 BFD_ASSERT (hash_table->bfd_of_glue_owner != NULL);
489
490 s = bfd_get_section_by_name
491 (hash_table->bfd_of_glue_owner, THUMB2ARM_GLUE_SECTION_NAME);
492
493 BFD_ASSERT (s != NULL);
494
dc810e39
AM		 495 tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
496 + strlen (THUMB2ARM_GLUE_ENTRY_NAME) + 1);
252b5132
RH		 497
498 BFD_ASSERT (tmp_name);
499
500 sprintf (tmp_name, THUMB2ARM_GLUE_ENTRY_NAME, name);
501
502 myh = elf_link_hash_lookup
503 (&(hash_table)->root, tmp_name, false, false, true);
504
505 if (myh != NULL)
506 {
9b485d32 507 /* We've already seen this guy. */
252b5132 508 free (tmp_name);
9b485d32 509 return;
252b5132
RH		 510 }
511
dc810e39
AM		 512 val = hash_table->thumb_glue_size + 1;
513 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
514 tmp_name, BSF_GLOBAL, s, val,
252b5132
RH		 515 NULL, true, false,
516 (struct bfd_link_hash_entry **) &myh);
517
9b485d32 518 /* If we mark it 'Thumb', the disassembler will do a better job. */
252b5132
RH		 519 bind = ELF_ST_BIND (myh->type);
520 myh->type = ELF_ST_INFO (bind, STT_ARM_TFUNC);
521
522 free (tmp_name);
523
252b5132
RH		 524#define CHANGE_TO_ARM "__%s_change_to_arm"
525#define BACK_FROM_ARM "__%s_back_from_arm"
526
9b485d32 527 /* Allocate another symbol to mark where we switch to Arm mode. */
dc810e39
AM		 528 tmp_name = (char *) bfd_malloc ((bfd_size_type) strlen (name)
529 + strlen (CHANGE_TO_ARM) + 1);
252b5132
RH		 530
531 BFD_ASSERT (tmp_name);
532
533 sprintf (tmp_name, CHANGE_TO_ARM, name);
534
535 myh = NULL;
536
dc810e39
AM		 537 val = hash_table->thumb_glue_size + 4,
538 _bfd_generic_link_add_one_symbol (link_info, hash_table->bfd_of_glue_owner,
539 tmp_name, BSF_LOCAL, s, val,
252b5132
RH		 540 NULL, true, false,
541 (struct bfd_link_hash_entry **) &myh);
542
543 free (tmp_name);
544
545 hash_table->thumb_glue_size += THUMB2ARM_GLUE_SIZE;
546
547 return;
548}
549
550/* Select a BFD to be used to hold the sections used by the glue code.
551 This function is called from the linker scripts in ld/emultempl/
552 {armelf/pe}.em */
9b485d32 553
252b5132
RH		 554boolean
555bfd_elf32_arm_get_bfd_for_interworking (abfd, info)
556 bfd *abfd;
557 struct bfd_link_info *info;
558{
559 struct elf32_arm_link_hash_table *globals;
560 flagword flags;
561 asection *sec;
562
563 /* If we are only performing a partial link do not bother
564 getting a bfd to hold the glue. */
565 if (info->relocateable)
566 return true;
567
568 globals = elf32_arm_hash_table (info);
569
570 BFD_ASSERT (globals != NULL);
571
572 if (globals->bfd_of_glue_owner != NULL)
573 return true;
574
575 sec = bfd_get_section_by_name (abfd, ARM2THUMB_GLUE_SECTION_NAME);
576
577 if (sec == NULL)
578 {
57db232e
NC		 579 /* Note: we do not include the flag SEC_LINKER_CREATED, as this
580 will prevent elf_link_input_bfd() from processing the contents
581 of this section. */
811b4bf6 582 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY;
252b5132
RH		 583
584 sec = bfd_make_section (abfd, ARM2THUMB_GLUE_SECTION_NAME);
585
586 if (sec == NULL
587 || !bfd_set_section_flags (abfd, sec, flags)
588 || !bfd_set_section_alignment (abfd, sec, 2))
589 return false;
9a5aca8c 590
57db232e
NC		 591 /* Set the gc mark to prevent the section from being removed by garbage
592 collection, despite the fact that no relocs refer to this section. */
593 sec->gc_mark = 1;
252b5132
RH		 594 }
595
596 sec = bfd_get_section_by_name (abfd, THUMB2ARM_GLUE_SECTION_NAME);
597
598 if (sec == NULL)
599 {
811b4bf6 600 flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_CODE | SEC_READONLY;
252b5132
RH		 601
602 sec = bfd_make_section (abfd, THUMB2ARM_GLUE_SECTION_NAME);
603
604 if (sec == NULL
605 || !bfd_set_section_flags (abfd, sec, flags)
606 || !bfd_set_section_alignment (abfd, sec, 2))
607 return false;
9a5aca8c 608
57db232e 609 sec->gc_mark = 1;
252b5132
RH		 610 }
611
612 /* Save the bfd for later use. */
613 globals->bfd_of_glue_owner = abfd;
614
615 return true;
616}
617
618boolean
ba96a88f 619bfd_elf32_arm_process_before_allocation (abfd, link_info, no_pipeline_knowledge)
252b5132
RH		 620 bfd *abfd;
621 struct bfd_link_info *link_info;
ba96a88f 622 int no_pipeline_knowledge;
252b5132
RH		 623{
624 Elf_Internal_Shdr *symtab_hdr;
625 Elf_Internal_Rela *free_relocs = NULL;
626 Elf_Internal_Rela *irel, *irelend;
627 bfd_byte *contents = NULL;
628 bfd_byte *free_contents = NULL;
629 Elf32_External_Sym *extsyms = NULL;
630 Elf32_External_Sym *free_extsyms = NULL;
631
632 asection *sec;
633 struct elf32_arm_link_hash_table *globals;
634
635 /* If we are only performing a partial link do not bother
636 to construct any glue. */
637 if (link_info->relocateable)
638 return true;
639
640 /* Here we have a bfd that is to be included on the link. We have a hook
641 to do reloc rummaging, before section sizes are nailed down. */
252b5132
RH		 642 globals = elf32_arm_hash_table (link_info);
643
644 BFD_ASSERT (globals != NULL);
645 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
646
ba96a88f 647 globals->no_pipeline_knowledge = no_pipeline_knowledge;
f21f3fe0 648
252b5132
RH		 649 /* Rummage around all the relocs and map the glue vectors. */
650 sec = abfd->sections;
651
652 if (sec == NULL)
653 return true;
654
655 for (; sec != NULL; sec = sec->next)
656 {
657 if (sec->reloc_count == 0)
658 continue;
659
660 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
252b5132 661
9b485d32 662 /* Load the relocs. */
252b5132 663 irel = (_bfd_elf32_link_read_relocs (abfd, sec, (PTR) NULL,
dc810e39 664 (Elf_Internal_Rela *) NULL, false));
252b5132
RH		 665
666 BFD_ASSERT (irel != 0);
667
668 irelend = irel + sec->reloc_count;
669 for (; irel < irelend; irel++)
670 {
671 long r_type;
672 unsigned long r_index;
252b5132
RH		 673
674 struct elf_link_hash_entry *h;
675
676 r_type = ELF32_R_TYPE (irel->r_info);
677 r_index = ELF32_R_SYM (irel->r_info);
678
9b485d32 679 /* These are the only relocation types we care about. */
ba96a88f 680 if ( r_type != R_ARM_PC24
252b5132
RH		 681 && r_type != R_ARM_THM_PC22)
682 continue;
683
684 /* Get the section contents if we haven't done so already. */
685 if (contents == NULL)
686 {
687 /* Get cached copy if it exists. */
688 if (elf_section_data (sec)->this_hdr.contents != NULL)
689 contents = elf_section_data (sec)->this_hdr.contents;
690 else
691 {
692 /* Go get them off disk. */
693 contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
694 if (contents == NULL)
695 goto error_return;
9b485d32 696
252b5132
RH		 697 free_contents = contents;
698
699 if (!bfd_get_section_contents (abfd, sec, contents,
dc810e39 700 (file_ptr) 0, sec->_raw_size))
252b5132
RH		 701 goto error_return;
702 }
703 }
704
705 /* Read this BFD's symbols if we haven't done so already. */
706 if (extsyms == NULL)
707 {
708 /* Get cached copy if it exists. */
709 if (symtab_hdr->contents != NULL)
710 extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
711 else
712 {
713 /* Go get them off disk. */
714 extsyms = ((Elf32_External_Sym *)
715 bfd_malloc (symtab_hdr->sh_size));
716 if (extsyms == NULL)
717 goto error_return;
9b485d32 718
252b5132 719 free_extsyms = extsyms;
9b485d32 720
252b5132 721 if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
dc810e39 722 || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd)
252b5132
RH		 723 != symtab_hdr->sh_size))
724 goto error_return;
725 }
726 }
727
a7c10850 728 /* If the relocation is not against a symbol it cannot concern us. */
252b5132
RH		 729 h = NULL;
730
9b485d32 731 /* We don't care about local symbols. */
252b5132
RH		 732 if (r_index < symtab_hdr->sh_info)
733 continue;
734
9b485d32 735 /* This is an external symbol. */
252b5132
RH		 736 r_index -= symtab_hdr->sh_info;
737 h = (struct elf_link_hash_entry *)
738 elf_sym_hashes (abfd)[r_index];
739
740 /* If the relocation is against a static symbol it must be within
741 the current section and so cannot be a cross ARM/Thumb relocation. */
742 if (h == NULL)
743 continue;
744
745 switch (r_type)
746 {
747 case R_ARM_PC24:
748 /* This one is a call from arm code. We need to look up
2f0ca46a 749 the target of the call. If it is a thumb target, we
252b5132 750 insert glue. */
252b5132
RH		 751 if (ELF_ST_TYPE(h->type) == STT_ARM_TFUNC)
752 record_arm_to_thumb_glue (link_info, h);
753 break;
754
755 case R_ARM_THM_PC22:
f21f3fe0 756 /* This one is a call from thumb code. We look
2f0ca46a 757 up the target of the call. If it is not a thumb
bcbdc74c 758 target, we insert glue. */
252b5132
RH		 759 if (ELF_ST_TYPE (h->type) != STT_ARM_TFUNC)
760 record_thumb_to_arm_glue (link_info, h);
761 break;
762
763 default:
764 break;
765 }
766 }
767 }
768
769 return true;
9a5aca8c 770
252b5132
RH		 771error_return:
772 if (free_relocs != NULL)
773 free (free_relocs);
774 if (free_contents != NULL)
775 free (free_contents);
776 if (free_extsyms != NULL)
777 free (free_extsyms);
9a5aca8c 778
252b5132 779 return false;
252b5132
RH		 780}
781
782/* The thumb form of a long branch is a bit finicky, because the offset
783 encoding is split over two fields, each in it's own instruction. They
f21f3fe0 784 can occur in any order. So given a thumb form of long branch, and an
252b5132 785 offset, insert the offset into the thumb branch and return finished
f21f3fe0 786 instruction.
252b5132 787
f21f3fe0 788 It takes two thumb instructions to encode the target address. Each has
252b5132 789 11 bits to invest. The upper 11 bits are stored in one (identifed by
f21f3fe0
UD		 790 H-0.. see below), the lower 11 bits are stored in the other (identified
791 by H-1).
252b5132 792
f21f3fe0 793 Combine together and shifted left by 1 (it's a half word address) and
252b5132
RH		 794 there you have it.
795
796 Op: 1111 = F,
797 H-0, upper address-0 = 000
798 Op: 1111 = F,
799 H-1, lower address-0 = 800
800
f21f3fe0 801 They can be ordered either way, but the arm tools I've seen always put
252b5132
RH		 802 the lower one first. It probably doesn't matter. krk@cygnus.com
803
804 XXX: Actually the order does matter. The second instruction (H-1)
805 moves the computed address into the PC, so it must be the second one
806 in the sequence. The problem, however is that whilst little endian code
807 stores the instructions in HI then LOW order, big endian code does the
dfc5f959 808 reverse. nickc@cygnus.com. */
252b5132 809
dfc5f959
NC		 810#define LOW_HI_ORDER 0xF800F000
811#define HI_LOW_ORDER 0xF000F800
252b5132
RH		 812
813static insn32
814insert_thumb_branch (br_insn, rel_off)
815 insn32 br_insn;
816 int rel_off;
817{
818 unsigned int low_bits;
819 unsigned int high_bits;
820
252b5132
RH		 821 BFD_ASSERT ((rel_off & 1) != 1);
822
dfc5f959
NC		 823 rel_off >>= 1; /* Half word aligned address. */
824 low_bits = rel_off & 0x000007FF; /* The bottom 11 bits. */
825 high_bits = (rel_off >> 11) & 0x000007FF; /* The top 11 bits. */
252b5132
RH		 826
827 if ((br_insn & LOW_HI_ORDER) == LOW_HI_ORDER)
828 br_insn = LOW_HI_ORDER | (low_bits << 16) | high_bits;
829 else if ((br_insn & HI_LOW_ORDER) == HI_LOW_ORDER)
830 br_insn = HI_LOW_ORDER | (high_bits << 16) | low_bits;
831 else
9b485d32
NC		 832 /* FIXME: abort is probably not the right call. krk@cygnus.com */
833 abort (); /* error - not a valid branch instruction form. */
252b5132 834
252b5132
RH		 835 return br_insn;
836}
837
9b485d32
NC		 838/* Thumb code calling an ARM function. */
839
252b5132
RH		 840static int
841elf32_thumb_to_arm_stub (info, name, input_bfd, output_bfd, input_section,
842 hit_data, sym_sec, offset, addend, val)
bcbdc74c
NC		 843 struct bfd_link_info * info;
844 const char * name;
845 bfd * input_bfd;
846 bfd * output_bfd;
847 asection * input_section;
848 bfd_byte * hit_data;
849 asection * sym_sec;
850 bfd_vma offset;
851 bfd_signed_vma addend;
852 bfd_vma val;
252b5132 853{
bcbdc74c 854 asection * s = 0;
dc810e39 855 bfd_vma my_offset;
252b5132
RH		 856 unsigned long int tmp;
857 long int ret_offset;
bcbdc74c
NC		 858 struct elf_link_hash_entry * myh;
859 struct elf32_arm_link_hash_table * globals;
252b5132
RH		 860
861 myh = find_thumb_glue (info, name, input_bfd);
862 if (myh == NULL)
863 return false;
864
865 globals = elf32_arm_hash_table (info);
866
867 BFD_ASSERT (globals != NULL);
868 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
869
870 my_offset = myh->root.u.def.value;
871
872 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
873 THUMB2ARM_GLUE_SECTION_NAME);
874
875 BFD_ASSERT (s != NULL);
876 BFD_ASSERT (s->contents != NULL);
877 BFD_ASSERT (s->output_section != NULL);
878
879 if ((my_offset & 0x01) == 0x01)
880 {
881 if (sym_sec != NULL
882 && sym_sec->owner != NULL
883 && !INTERWORK_FLAG (sym_sec->owner))
884 {
8f615d07 885 (*_bfd_error_handler)
9b485d32 886 (_("%s(%s): warning: interworking not enabled."),
8f615d07
AM		 887 bfd_archive_filename (sym_sec->owner), name);
888 (*_bfd_error_handler)
9b485d32 889 (_(" first occurrence: %s: thumb call to arm"),
8f615d07 890 bfd_archive_filename (input_bfd));
252b5132
RH		 891
892 return false;
893 }
894
895 --my_offset;
896 myh->root.u.def.value = my_offset;
897
dc810e39 898 bfd_put_16 (output_bfd, (bfd_vma) t2a1_bx_pc_insn,
252b5132
RH		 899 s->contents + my_offset);
900
dc810e39 901 bfd_put_16 (output_bfd, (bfd_vma) t2a2_noop_insn,
252b5132
RH		 902 s->contents + my_offset + 2);
903
904 ret_offset =
9b485d32
NC		 905 /* Address of destination of the stub. */
906 ((bfd_signed_vma) val)
252b5132 907 - ((bfd_signed_vma)
9b485d32
NC		 908 /* Offset from the start of the current section to the start of the stubs. */
909 (s->output_offset
910 /* Offset of the start of this stub from the start of the stubs. */
911 + my_offset
912 /* Address of the start of the current section. */
913 + s->output_section->vma)
914 /* The branch instruction is 4 bytes into the stub. */
915 + 4
916 /* ARM branches work from the pc of the instruction + 8. */
917 + 8);
252b5132
RH		 918
919 bfd_put_32 (output_bfd,
dc810e39 920 (bfd_vma) t2a3_b_insn | ((ret_offset >> 2) & 0x00FFFFFF),
252b5132
RH		 921 s->contents + my_offset + 4);
922 }
923
924 BFD_ASSERT (my_offset <= globals->thumb_glue_size);
925
926 /* Now go back and fix up the original BL insn to point
927 to here. */
dc810e39
AM		 928 ret_offset = (s->output_offset
929 + my_offset
930 - (input_section->output_offset
931 + offset + addend)
932 - 8);
252b5132
RH		 933
934 tmp = bfd_get_32 (input_bfd, hit_data
935 - input_section->vma);
936
937 bfd_put_32 (output_bfd,
dc810e39 938 (bfd_vma) insert_thumb_branch (tmp, ret_offset),
252b5132
RH		 939 hit_data - input_section->vma);
940
941 return true;
942}
943
9b485d32
NC		 944/* Arm code calling a Thumb function. */
945
252b5132
RH		 946static int
947elf32_arm_to_thumb_stub (info, name, input_bfd, output_bfd, input_section,
948 hit_data, sym_sec, offset, addend, val)
bcbdc74c
NC		 949 struct bfd_link_info * info;
950 const char * name;
951 bfd * input_bfd;
952 bfd * output_bfd;
953 asection * input_section;
954 bfd_byte * hit_data;
955 asection * sym_sec;
956 bfd_vma offset;
957 bfd_signed_vma addend;
958 bfd_vma val;
252b5132
RH		 959{
960 unsigned long int tmp;
dc810e39 961 bfd_vma my_offset;
bcbdc74c 962 asection * s;
252b5132 963 long int ret_offset;
bcbdc74c
NC		 964 struct elf_link_hash_entry * myh;
965 struct elf32_arm_link_hash_table * globals;
252b5132
RH		 966
967 myh = find_arm_glue (info, name, input_bfd);
968 if (myh == NULL)
969 return false;
970
971 globals = elf32_arm_hash_table (info);
972
973 BFD_ASSERT (globals != NULL);
974 BFD_ASSERT (globals->bfd_of_glue_owner != NULL);
975
976 my_offset = myh->root.u.def.value;
977 s = bfd_get_section_by_name (globals->bfd_of_glue_owner,
978 ARM2THUMB_GLUE_SECTION_NAME);
979 BFD_ASSERT (s != NULL);
980 BFD_ASSERT (s->contents != NULL);
981 BFD_ASSERT (s->output_section != NULL);
982
983 if ((my_offset & 0x01) == 0x01)
984 {
985 if (sym_sec != NULL
986 && sym_sec->owner != NULL
987 && !INTERWORK_FLAG (sym_sec->owner))
988 {
8f615d07 989 (*_bfd_error_handler)
9b485d32 990 (_("%s(%s): warning: interworking not enabled."),
8f615d07
AM		 991 bfd_archive_filename (sym_sec->owner), name);
992 (*_bfd_error_handler)
9b485d32 993 (_(" first occurrence: %s: arm call to thumb"),
8f615d07 994 bfd_archive_filename (input_bfd));
252b5132 995 }
9b485d32 996
252b5132
RH		 997 --my_offset;
998 myh->root.u.def.value = my_offset;
999
dc810e39 1000 bfd_put_32 (output_bfd, (bfd_vma) a2t1_ldr_insn,
252b5132
RH		 1001 s->contents + my_offset);
1002
dc810e39 1003 bfd_put_32 (output_bfd, (bfd_vma) a2t2_bx_r12_insn,
252b5132
RH		 1004 s->contents + my_offset + 4);
1005
1006 /* It's a thumb address. Add the low order bit. */
1007 bfd_put_32 (output_bfd, val | a2t3_func_addr_insn,
1008 s->contents + my_offset + 8);
1009 }
1010
1011 BFD_ASSERT (my_offset <= globals->arm_glue_size);
1012
1013 tmp = bfd_get_32 (input_bfd, hit_data);
1014 tmp = tmp & 0xFF000000;
1015
9b485d32 1016 /* Somehow these are both 4 too far, so subtract 8. */
dc810e39
AM		 1017 ret_offset = (s->output_offset
1018 + my_offset
1019 + s->output_section->vma
1020 - (input_section->output_offset
1021 + input_section->output_section->vma
1022 + offset + addend)
1023 - 8);
9a5aca8c 1024
252b5132
RH		 1025 tmp = tmp | ((ret_offset >> 2) & 0x00FFFFFF);
1026
dc810e39 1027 bfd_put_32 (output_bfd, (bfd_vma) tmp, hit_data - input_section->vma);
252b5132 1028
252b5132
RH		 1029 return true;
1030}
1031
1032/* Perform a relocation as part of a final link. */
9b485d32 1033
252b5132
RH		 1034static bfd_reloc_status_type
1035elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
1036 input_section, contents, rel, value,
780a67af 1037 info, sym_sec, sym_name, sym_flags, h)
252b5132
RH		 1038 reloc_howto_type * howto;
1039 bfd * input_bfd;
1040 bfd * output_bfd;
1041 asection * input_section;
1042 bfd_byte * contents;
1043 Elf_Internal_Rela * rel;
1044 bfd_vma value;
1045 struct bfd_link_info * info;
1046 asection * sym_sec;
1047 const char * sym_name;
dc810e39 1048 int sym_flags;
780a67af 1049 struct elf_link_hash_entry * h;
252b5132
RH		 1050{
1051 unsigned long r_type = howto->type;
1052 unsigned long r_symndx;
1053 bfd_byte * hit_data = contents + rel->r_offset;
1054 bfd * dynobj = NULL;
1055 Elf_Internal_Shdr * symtab_hdr;
1056 struct elf_link_hash_entry ** sym_hashes;
1057 bfd_vma * local_got_offsets;
1058 asection * sgot = NULL;
1059 asection * splt = NULL;
1060 asection * sreloc = NULL;
252b5132 1061 bfd_vma addend;
ba96a88f
NC		 1062 bfd_signed_vma signed_addend;
1063 struct elf32_arm_link_hash_table * globals;
f21f3fe0 1064
cac15327
NC		 1065 /* If the start address has been set, then set the EF_ARM_HASENTRY
1066 flag. Setting this more than once is redundant, but the cost is
1067 not too high, and it keeps the code simple.
99e4ae17 1068
cac15327
NC		 1069 The test is done here, rather than somewhere else, because the
1070 start address is only set just before the final link commences.
1071
1072 Note - if the user deliberately sets a start address of 0, the
1073 flag will not be set. */
1074 if (bfd_get_start_address (output_bfd) != 0)
1075 elf_elfheader (output_bfd)->e_flags |= EF_ARM_HASENTRY;
99e4ae17 1076
ba96a88f 1077 globals = elf32_arm_hash_table (info);
f21f3fe0 1078
252b5132
RH		 1079 dynobj = elf_hash_table (info)->dynobj;
1080 if (dynobj)
1081 {
1082 sgot = bfd_get_section_by_name (dynobj, ".got");
1083 splt = bfd_get_section_by_name (dynobj, ".plt");
1084 }
1085 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1086 sym_hashes = elf_sym_hashes (input_bfd);
1087 local_got_offsets = elf_local_got_offsets (input_bfd);
1088 r_symndx = ELF32_R_SYM (rel->r_info);
1089
1090#ifdef USE_REL
ba96a88f
NC		 1091 addend = bfd_get_32 (input_bfd, hit_data) & howto->src_mask;
1092
1093 if (addend & ((howto->src_mask + 1) >> 1))
1094 {
1095 signed_addend = -1;
1096 signed_addend &= ~ howto->src_mask;
1097 signed_addend |= addend;
1098 }
1099 else
1100 signed_addend = addend;
252b5132 1101#else
ba96a88f 1102 addend = signed_addend = rel->r_addend;
252b5132 1103#endif
f21f3fe0 1104
252b5132
RH		 1105 switch (r_type)
1106 {
1107 case R_ARM_NONE:
1108 return bfd_reloc_ok;
1109
1110 case R_ARM_PC24:
1111 case R_ARM_ABS32:
1112 case R_ARM_REL32:
dfc5f959
NC		 1113#ifndef OLD_ARM_ABI
1114 case R_ARM_XPC25:
1115#endif
252b5132 1116 /* When generating a shared object, these relocations are copied
9b485d32 1117 into the output file to be resolved at run time. */
252b5132 1118 if (info->shared
ec338859 1119 && r_symndx != 0
252b5132 1120 && (r_type != R_ARM_PC24
99e4ae17 1121 || (h != NULL
252b5132
RH		 1122 && h->dynindx != -1
1123 && (! info->symbolic
1124 || (h->elf_link_hash_flags
1125 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
1126 {
1127 Elf_Internal_Rel outrel;
1128 boolean skip, relocate;
f21f3fe0 1129
252b5132
RH		 1130 if (sreloc == NULL)
1131 {
1132 const char * name;
f21f3fe0 1133
252b5132
RH		 1134 name = (bfd_elf_string_from_elf_section
1135 (input_bfd,
1136 elf_elfheader (input_bfd)->e_shstrndx,
1137 elf_section_data (input_section)->rel_hdr.sh_name));
1138 if (name == NULL)
1139 return bfd_reloc_notsupported;
f21f3fe0 1140
252b5132
RH		 1141 BFD_ASSERT (strncmp (name, ".rel", 4) == 0
1142 && strcmp (bfd_get_section_name (input_bfd,
1143 input_section),
1144 name + 4) == 0);
f21f3fe0 1145
252b5132
RH		 1146 sreloc = bfd_get_section_by_name (dynobj, name);
1147 BFD_ASSERT (sreloc != NULL);
1148 }
f21f3fe0 1149
252b5132 1150 skip = false;
f21f3fe0 1151
252b5132
RH		 1152 if (elf_section_data (input_section)->stab_info == NULL)
1153 outrel.r_offset = rel->r_offset;
1154 else
1155 {
1156 bfd_vma off;
f21f3fe0 1157
252b5132
RH		 1158 off = (_bfd_stab_section_offset
1159 (output_bfd, &elf_hash_table (info)->stab_info,
1160 input_section,
1161 & elf_section_data (input_section)->stab_info,
1162 rel->r_offset));
1163 if (off == (bfd_vma) -1)
1164 skip = true;
1165 outrel.r_offset = off;
1166 }
f21f3fe0 1167
252b5132
RH		 1168 outrel.r_offset += (input_section->output_section->vma
1169 + input_section->output_offset);
f21f3fe0 1170
252b5132
RH		 1171 if (skip)
1172 {
1173 memset (&outrel, 0, sizeof outrel);
1174 relocate = false;
1175 }
1176 else if (r_type == R_ARM_PC24)
1177 {
1178 BFD_ASSERT (h != NULL && h->dynindx != -1);
1179 if ((input_section->flags & SEC_ALLOC) != 0)
1180 relocate = false;
1181 else
1182 relocate = true;
1183 outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_PC24);
1184 }
1185 else
1186 {
1187 if (h == NULL
1188 || ((info->symbolic || h->dynindx == -1)
1189 && (h->elf_link_hash_flags
1190 & ELF_LINK_HASH_DEF_REGULAR) != 0))
1191 {
1192 relocate = true;
1193 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
1194 }
1195 else
1196 {
1197 BFD_ASSERT (h->dynindx != -1);
1198 if ((input_section->flags & SEC_ALLOC) != 0)
1199 relocate = false;
1200 else
1201 relocate = true;
1202 outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_ABS32);
1203 }
1204 }
f21f3fe0 1205
252b5132
RH		 1206 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
1207 (((Elf32_External_Rel *)
1208 sreloc->contents)
1209 + sreloc->reloc_count));
1210 ++sreloc->reloc_count;
9a5aca8c 1211
f21f3fe0 1212 /* If this reloc is against an external symbol, we do not want to
252b5132 1213 fiddle with the addend. Otherwise, we need to include the symbol
9b485d32 1214 value so that it becomes an addend for the dynamic reloc. */
252b5132
RH		 1215 if (! relocate)
1216 return bfd_reloc_ok;
9a5aca8c 1217
f21f3fe0 1218 return _bfd_final_link_relocate (howto, input_bfd, input_section,
252b5132
RH		 1219 contents, rel->r_offset, value,
1220 (bfd_vma) 0);
1221 }
1222 else switch (r_type)
1223 {
dfc5f959
NC		 1224#ifndef OLD_ARM_ABI
1225 case R_ARM_XPC25: /* Arm BLX instruction. */
1226#endif
1227 case R_ARM_PC24: /* Arm B/BL instruction */
1228#ifndef OLD_ARM_ABI
1229 if (r_type == R_ARM_XPC25)
252b5132 1230 {
dfc5f959
NC		 1231 /* Check for Arm calling Arm function. */
1232 /* FIXME: Should we translate the instruction into a BL
1233 instruction instead ? */
1234 if (sym_flags != STT_ARM_TFUNC)
8f615d07 1235 (*_bfd_error_handler) (_("\
dfc5f959 1236%s: Warning: Arm BLX instruction targets Arm function '%s'."),
8f615d07
AM		 1237 bfd_archive_filename (input_bfd),
1238 h ? h->root.root.string : "(local)");
dfc5f959
NC		 1239 }
1240 else
1241#endif
1242 {
1243 /* Check for Arm calling Thumb function. */
1244 if (sym_flags == STT_ARM_TFUNC)
1245 {
1246 elf32_arm_to_thumb_stub (info, sym_name, input_bfd, output_bfd,
1247 input_section, hit_data, sym_sec, rel->r_offset,
1248 signed_addend, value);
1249 return bfd_reloc_ok;
1250 }
252b5132 1251 }
ba96a88f
NC		 1252
1253 if ( strcmp (bfd_get_target (input_bfd), "elf32-littlearm-oabi") == 0
1254 || strcmp (bfd_get_target (input_bfd), "elf32-bigarm-oabi") == 0)
1255 {
1256 /* The old way of doing things. Trearing the addend as a
1257 byte sized field and adding in the pipeline offset. */
ba96a88f
NC		 1258 value -= (input_section->output_section->vma
1259 + input_section->output_offset);
1260 value -= rel->r_offset;
1261 value += addend;
f21f3fe0 1262
ba96a88f
NC		 1263 if (! globals->no_pipeline_knowledge)
1264 value -= 8;
1265 }
1266 else
1267 {
1268 /* The ARM ELF ABI says that this reloc is computed as: S - P + A
1269 where:
1270 S is the address of the symbol in the relocation.
1271 P is address of the instruction being relocated.
1272 A is the addend (extracted from the instruction) in bytes.
f21f3fe0 1273
ba96a88f
NC		 1274 S is held in 'value'.
1275 P is the base address of the section containing the instruction
1276 plus the offset of the reloc into that section, ie:
1277 (input_section->output_section->vma +
1278 input_section->output_offset +
1279 rel->r_offset).
1280 A is the addend, converted into bytes, ie:
1281 (signed_addend * 4)
1282
1283 Note: None of these operations have knowledge of the pipeline
1284 size of the processor, thus it is up to the assembler to encode
1285 this information into the addend. */
ba96a88f
NC		 1286 value -= (input_section->output_section->vma
1287 + input_section->output_offset);
1288 value -= rel->r_offset;
1289 value += (signed_addend << howto->size);
f21f3fe0 1290
ba96a88f
NC		 1291 /* Previous versions of this code also used to add in the pipeline
1292 offset here. This is wrong because the linker is not supposed
1293 to know about such things, and one day it might change. In order
1294 to support old binaries that need the old behaviour however, so
1295 we attempt to detect which ABI was used to create the reloc. */
1296 if (! globals->no_pipeline_knowledge)
f21f3fe0 1297 {
ba96a88f 1298 Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */
f21f3fe0 1299
ba96a88f 1300 i_ehdrp = elf_elfheader (input_bfd);
f21f3fe0 1301
ba96a88f
NC		 1302 if (i_ehdrp->e_ident[EI_OSABI] == 0)
1303 value -= 8;
1304 }
1305 }
23080146 1306
dcb5e6e6
NC		 1307 signed_addend = value;
1308 signed_addend >>= howto->rightshift;
9a5aca8c 1309
59f2c4e7
NC		 1310 /* It is not an error for an undefined weak reference to be
1311 out of range. Any program that branches to such a symbol
9a5aca8c
AM		 1312 is going to crash anyway, so there is no point worrying
1313 about getting the destination exactly right. */
59f2c4e7
NC		 1314 if (! h || h->root.type != bfd_link_hash_undefweak)
1315 {
9b485d32 1316 /* Perform a signed range check. */
dcb5e6e6 1317 if ( signed_addend > ((bfd_signed_vma) (howto->dst_mask >> 1))
59f2c4e7
NC		 1318 || signed_addend < - ((bfd_signed_vma) ((howto->dst_mask + 1) >> 1)))
1319 return bfd_reloc_overflow;
1320 }
9a5aca8c 1321
dcb5e6e6
NC		 1322#ifndef OLD_ARM_ABI
1323 /* If necessary set the H bit in the BLX instruction. */
1324 if (r_type == R_ARM_XPC25 && ((value & 2) == 2))
1325 value = (signed_addend & howto->dst_mask)
1326 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask))
1327 | (1 << 24);
1328 else
1329#endif
1330 value = (signed_addend & howto->dst_mask)
1331 | (bfd_get_32 (input_bfd, hit_data) & (~ howto->dst_mask));
252b5132 1332 break;
f21f3fe0 1333
252b5132
RH		 1334 case R_ARM_ABS32:
1335 value += addend;
1336 if (sym_flags == STT_ARM_TFUNC)
1337 value |= 1;
1338 break;
f21f3fe0 1339
252b5132
RH		 1340 case R_ARM_REL32:
1341 value -= (input_section->output_section->vma
62efb346 1342 + input_section->output_offset + rel->r_offset);
252b5132
RH		 1343 value += addend;
1344 break;
1345 }
f21f3fe0 1346
252b5132
RH		 1347 bfd_put_32 (input_bfd, value, hit_data);
1348 return bfd_reloc_ok;
1349
1350 case R_ARM_ABS8:
1351 value += addend;
1352 if ((long) value > 0x7f || (long) value < -0x80)
1353 return bfd_reloc_overflow;
1354
1355 bfd_put_8 (input_bfd, value, hit_data);
1356 return bfd_reloc_ok;
1357
1358 case R_ARM_ABS16:
1359 value += addend;
1360
1361 if ((long) value > 0x7fff || (long) value < -0x8000)
1362 return bfd_reloc_overflow;
1363
1364 bfd_put_16 (input_bfd, value, hit_data);
1365 return bfd_reloc_ok;
1366
1367 case R_ARM_ABS12:
1368 /* Support ldr and str instruction for the arm */
1369 /* Also thumb b (unconditional branch). ??? Really? */
1370 value += addend;
1371
1372 if ((long) value > 0x7ff || (long) value < -0x800)
1373 return bfd_reloc_overflow;
1374
1375 value |= (bfd_get_32 (input_bfd, hit_data) & 0xfffff000);
1376 bfd_put_32 (input_bfd, value, hit_data);
1377 return bfd_reloc_ok;
1378
1379 case R_ARM_THM_ABS5:
9b485d32 1380 /* Support ldr and str instructions for the thumb. */
252b5132
RH		 1381#ifdef USE_REL
1382 /* Need to refetch addend. */
1383 addend = bfd_get_16 (input_bfd, hit_data) & howto->src_mask;
1384 /* ??? Need to determine shift amount from operand size. */
1385 addend >>= howto->rightshift;
1386#endif
1387 value += addend;
1388
1389 /* ??? Isn't value unsigned? */
1390 if ((long) value > 0x1f || (long) value < -0x10)
1391 return bfd_reloc_overflow;
1392
1393 /* ??? Value needs to be properly shifted into place first. */
1394 value |= bfd_get_16 (input_bfd, hit_data) & 0xf83f;
1395 bfd_put_16 (input_bfd, value, hit_data);
1396 return bfd_reloc_ok;
1397
dfc5f959
NC		 1398#ifndef OLD_ARM_ABI
1399 case R_ARM_THM_XPC22:
1400#endif
252b5132 1401 case R_ARM_THM_PC22:
dfc5f959 1402 /* Thumb BL (branch long instruction). */
252b5132 1403 {
ba96a88f
NC		 1404 bfd_vma relocation;
1405 boolean overflow = false;
1406 bfd_vma upper_insn = bfd_get_16 (input_bfd, hit_data);
1407 bfd_vma lower_insn = bfd_get_16 (input_bfd, hit_data + 2);
252b5132 1408 bfd_signed_vma reloc_signed_max = (1 << (howto->bitsize - 1)) - 1;
ba96a88f
NC		 1409 bfd_signed_vma reloc_signed_min = ~ reloc_signed_max;
1410 bfd_vma check;
252b5132 1411 bfd_signed_vma signed_check;
252b5132
RH		 1412
1413#ifdef USE_REL
1414 /* Need to refetch the addend and squish the two 11 bit pieces
1415 together. */
1416 {
ba96a88f
NC		 1417 bfd_vma upper = upper_insn & 0x7ff;
1418 bfd_vma lower = lower_insn & 0x7ff;
9b485d32 1419 upper = (upper ^ 0x400) - 0x400; /* Sign extend. */
252b5132 1420 addend = (upper << 12) | (lower << 1);
ba96a88f 1421 signed_addend = addend;
252b5132
RH		 1422 }
1423#endif
dfc5f959
NC		 1424#ifndef OLD_ARM_ABI
1425 if (r_type == R_ARM_THM_XPC22)
1426 {
1427 /* Check for Thumb to Thumb call. */
1428 /* FIXME: Should we translate the instruction into a BL
1429 instruction instead ? */
1430 if (sym_flags == STT_ARM_TFUNC)
8f615d07 1431 (*_bfd_error_handler) (_("\
dfc5f959 1432%s: Warning: Thumb BLX instruction targets thumb function '%s'."),
8f615d07
AM		 1433 bfd_archive_filename (input_bfd),
1434 h ? h->root.root.string : "(local)");
dfc5f959
NC		 1435 }
1436 else
1437#endif
252b5132 1438 {
dfc5f959
NC		 1439 /* If it is not a call to Thumb, assume call to Arm.
1440 If it is a call relative to a section name, then it is not a
1441 function call at all, but rather a long jump. */
1442 if (sym_flags != STT_ARM_TFUNC && sym_flags != STT_SECTION)
1443 {
1444 if (elf32_thumb_to_arm_stub
1445 (info, sym_name, input_bfd, output_bfd, input_section,
1446 hit_data, sym_sec, rel->r_offset, signed_addend, value))
1447 return bfd_reloc_ok;
1448 else
1449 return bfd_reloc_dangerous;
1450 }
252b5132 1451 }
f21f3fe0 1452
ba96a88f 1453 relocation = value + signed_addend;
f21f3fe0 1454
252b5132 1455 relocation -= (input_section->output_section->vma
ba96a88f
NC		 1456 + input_section->output_offset
1457 + rel->r_offset);
9a5aca8c 1458
ba96a88f
NC		 1459 if (! globals->no_pipeline_knowledge)
1460 {
9b485d32 1461 Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form. */
9a5aca8c 1462
ba96a88f 1463 i_ehdrp = elf_elfheader (input_bfd);
f21f3fe0 1464
ba96a88f
NC		 1465 /* Previous versions of this code also used to add in the pipline
1466 offset here. This is wrong because the linker is not supposed
1467 to know about such things, and one day it might change. In order
1468 to support old binaries that need the old behaviour however, so
1469 we attempt to detect which ABI was used to create the reloc. */
1470 if ( strcmp (bfd_get_target (input_bfd), "elf32-littlearm-oabi") == 0
1471 || strcmp (bfd_get_target (input_bfd), "elf32-bigarm-oabi") == 0
1472 || i_ehdrp->e_ident[EI_OSABI] == 0)
1473 relocation += 4;
1474 }
f21f3fe0 1475
252b5132
RH		 1476 check = relocation >> howto->rightshift;
1477
1478 /* If this is a signed value, the rightshift just dropped
1479 leading 1 bits (assuming twos complement). */
1480 if ((bfd_signed_vma) relocation >= 0)
1481 signed_check = check;
1482 else
1483 signed_check = check | ~((bfd_vma) -1 >> howto->rightshift);
1484
252b5132 1485 /* Assumes two's complement. */
ba96a88f 1486 if (signed_check > reloc_signed_max || signed_check < reloc_signed_min)
252b5132
RH		 1487 overflow = true;
1488
1489 /* Put RELOCATION back into the insn. */
1490 upper_insn = (upper_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 12) & 0x7ff);
1491 lower_insn = (lower_insn & ~(bfd_vma) 0x7ff) | ((relocation >> 1) & 0x7ff);
1492
df425bc0 1493#ifndef OLD_ARM_ABI
4f3c3dbb
NC		 1494 if (r_type == R_ARM_THM_XPC22
1495 && ((lower_insn & 0x1800) == 0x0800))
1496 /* Remove bit zero of the adjusted offset. Bit zero can only be
1497 set if the upper insn is at a half-word boundary, since the
1498 destination address, an ARM instruction, must always be on a
1499 word boundary. The semantics of the BLX (1) instruction, however,
1500 are that bit zero in the offset must always be zero, and the
1501 corresponding bit one in the target address will be set from bit
1502 one of the source address. */
1503 lower_insn &= ~1;
99e4ae17 1504#endif
252b5132
RH		 1505 /* Put the relocated value back in the object file: */
1506 bfd_put_16 (input_bfd, upper_insn, hit_data);
1507 bfd_put_16 (input_bfd, lower_insn, hit_data + 2);
1508
1509 return (overflow ? bfd_reloc_overflow : bfd_reloc_ok);
1510 }
1511 break;
1512
1513 case R_ARM_GNU_VTINHERIT:
1514 case R_ARM_GNU_VTENTRY:
1515 return bfd_reloc_ok;
1516
1517 case R_ARM_COPY:
1518 return bfd_reloc_notsupported;
1519
1520 case R_ARM_GLOB_DAT:
1521 return bfd_reloc_notsupported;
1522
1523 case R_ARM_JUMP_SLOT:
1524 return bfd_reloc_notsupported;
1525
1526 case R_ARM_RELATIVE:
1527 return bfd_reloc_notsupported;
1528
1529 case R_ARM_GOTOFF:
1530 /* Relocation is relative to the start of the
1531 global offset table. */
1532
1533 BFD_ASSERT (sgot != NULL);
1534 if (sgot == NULL)
1535 return bfd_reloc_notsupported;
9a5aca8c 1536
252b5132
RH		 1537 /* Note that sgot->output_offset is not involved in this
1538 calculation. We always want the start of .got. If we
1539 define _GLOBAL_OFFSET_TABLE in a different way, as is
1540 permitted by the ABI, we might have to change this
9b485d32 1541 calculation. */
252b5132 1542 value -= sgot->output_section->vma;
f21f3fe0 1543 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 1544 contents, rel->r_offset, value,
1545 (bfd_vma) 0);
252b5132
RH		 1546
1547 case R_ARM_GOTPC:
a7c10850 1548 /* Use global offset table as symbol value. */
252b5132 1549 BFD_ASSERT (sgot != NULL);
f21f3fe0 1550
252b5132
RH		 1551 if (sgot == NULL)
1552 return bfd_reloc_notsupported;
1553
1554 value = sgot->output_section->vma;
f21f3fe0 1555 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 1556 contents, rel->r_offset, value,
1557 (bfd_vma) 0);
f21f3fe0 1558
252b5132
RH		 1559 case R_ARM_GOT32:
1560 /* Relocation is to the entry for this symbol in the
9b485d32 1561 global offset table. */
252b5132
RH		 1562 if (sgot == NULL)
1563 return bfd_reloc_notsupported;
f21f3fe0 1564
252b5132
RH		 1565 if (h != NULL)
1566 {
1567 bfd_vma off;
f21f3fe0 1568
252b5132
RH		 1569 off = h->got.offset;
1570 BFD_ASSERT (off != (bfd_vma) -1);
f21f3fe0 1571
252b5132
RH		 1572 if (!elf_hash_table (info)->dynamic_sections_created ||
1573 (info->shared && (info->symbolic || h->dynindx == -1)
1574 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
1575 {
1576 /* This is actually a static link, or it is a -Bsymbolic link
1577 and the symbol is defined locally. We must initialize this
1578 entry in the global offset table. Since the offset must
1579 always be a multiple of 4, we use the least significant bit
1580 to record whether we have initialized it already.
f21f3fe0 1581
252b5132 1582 When doing a dynamic link, we create a .rel.got relocation
f21f3fe0 1583 entry to initialize the value. This is done in the
9b485d32 1584 finish_dynamic_symbol routine. */
252b5132
RH		 1585 if ((off & 1) != 0)
1586 off &= ~1;
1587 else
1588 {
1589 bfd_put_32 (output_bfd, value, sgot->contents + off);
1590 h->got.offset |= 1;
1591 }
1592 }
f21f3fe0 1593
252b5132
RH		 1594 value = sgot->output_offset + off;
1595 }
1596 else
1597 {
1598 bfd_vma off;
f21f3fe0 1599
252b5132
RH		 1600 BFD_ASSERT (local_got_offsets != NULL &&
1601 local_got_offsets[r_symndx] != (bfd_vma) -1);
f21f3fe0 1602
252b5132 1603 off = local_got_offsets[r_symndx];
f21f3fe0 1604
252b5132
RH		 1605 /* The offset must always be a multiple of 4. We use the
1606 least significant bit to record whether we have already
9b485d32 1607 generated the necessary reloc. */
252b5132
RH		 1608 if ((off & 1) != 0)
1609 off &= ~1;
1610 else
1611 {
1612 bfd_put_32 (output_bfd, value, sgot->contents + off);
f21f3fe0 1613
252b5132
RH		 1614 if (info->shared)
1615 {
1616 asection * srelgot;
1617 Elf_Internal_Rel outrel;
f21f3fe0 1618
252b5132
RH		 1619 srelgot = bfd_get_section_by_name (dynobj, ".rel.got");
1620 BFD_ASSERT (srelgot != NULL);
f21f3fe0 1621
252b5132 1622 outrel.r_offset = (sgot->output_section->vma
f21f3fe0 1623 + sgot->output_offset
252b5132
RH		 1624 + off);
1625 outrel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
1626 bfd_elf32_swap_reloc_out (output_bfd, &outrel,
1627 (((Elf32_External_Rel *)
1628 srelgot->contents)
1629 + srelgot->reloc_count));
1630 ++srelgot->reloc_count;
1631 }
f21f3fe0 1632
252b5132
RH		 1633 local_got_offsets[r_symndx] |= 1;
1634 }
f21f3fe0 1635
252b5132
RH		 1636 value = sgot->output_offset + off;
1637 }
9a5aca8c 1638
f21f3fe0 1639 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 1640 contents, rel->r_offset, value,
1641 (bfd_vma) 0);
f21f3fe0 1642
252b5132
RH		 1643 case R_ARM_PLT32:
1644 /* Relocation is to the entry for this symbol in the
1645 procedure linkage table. */
1646
1647 /* Resolve a PLT32 reloc against a local symbol directly,
9b485d32 1648 without using the procedure linkage table. */
252b5132
RH		 1649 if (h == NULL)
1650 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 1651 contents, rel->r_offset, value,
1652 (bfd_vma) 0);
252b5132
RH		 1653
1654 if (h->plt.offset == (bfd_vma) -1)
1655 /* We didn't make a PLT entry for this symbol. This
1656 happens when statically linking PIC code, or when
1657 using -Bsymbolic. */
1658 return _bfd_final_link_relocate (howto, input_bfd, input_section,
1659 contents, rel->r_offset, value,
1660 (bfd_vma) 0);
1661
1662 BFD_ASSERT(splt != NULL);
1663 if (splt == NULL)
1664 return bfd_reloc_notsupported;
1665
1666 value = (splt->output_section->vma
1667 + splt->output_offset
1668 + h->plt.offset);
1669 return _bfd_final_link_relocate (howto, input_bfd, input_section,
99e4ae17
AJ		 1670 contents, rel->r_offset, value,
1671 (bfd_vma) 0);
f21f3fe0 1672
252b5132
RH		 1673 case R_ARM_SBREL32:
1674 return bfd_reloc_notsupported;
1675
1676 case R_ARM_AMP_VCALL9:
1677 return bfd_reloc_notsupported;
1678
1679 case R_ARM_RSBREL32:
1680 return bfd_reloc_notsupported;
1681
1682 case R_ARM_THM_RPC22:
1683 return bfd_reloc_notsupported;
1684
1685 case R_ARM_RREL32:
1686 return bfd_reloc_notsupported;
1687
1688 case R_ARM_RABS32:
1689 return bfd_reloc_notsupported;
1690
1691 case R_ARM_RPC24:
1692 return bfd_reloc_notsupported;
1693
1694 case R_ARM_RBASE:
1695 return bfd_reloc_notsupported;
1696
1697 default:
1698 return bfd_reloc_notsupported;
1699 }
1700}
1701
98c1d4aa
NC		 1702#ifdef USE_REL
1703/* Add INCREMENT to the reloc (of type HOWTO) at ADDRESS. */
1704static void
1705arm_add_to_rel (abfd, address, howto, increment)
1706 bfd * abfd;
59f2c4e7 1707 bfd_byte * address;
98c1d4aa
NC		 1708 reloc_howto_type * howto;
1709 bfd_signed_vma increment;
1710{
98c1d4aa
NC		 1711 bfd_signed_vma addend;
1712
9a5aca8c 1713 if (howto->type == R_ARM_THM_PC22)
98c1d4aa 1714 {
9a5aca8c
AM		 1715 int upper_insn, lower_insn;
1716 int upper, lower;
98c1d4aa 1717
9a5aca8c
AM		 1718 upper_insn = bfd_get_16 (abfd, address);
1719 lower_insn = bfd_get_16 (abfd, address + 2);
1720 upper = upper_insn & 0x7ff;
1721 lower = lower_insn & 0x7ff;
1722
1723 addend = (upper << 12) | (lower << 1);
ddda4409 1724 addend += increment;
9a5aca8c 1725 addend >>= 1;
98c1d4aa 1726
9a5aca8c
AM		 1727 upper_insn = (upper_insn & 0xf800) | ((addend >> 11) & 0x7ff);
1728 lower_insn = (lower_insn & 0xf800) | (addend & 0x7ff);
1729
dc810e39
AM		 1730 bfd_put_16 (abfd, (bfd_vma) upper_insn, address);
1731 bfd_put_16 (abfd, (bfd_vma) lower_insn, address + 2);
9a5aca8c
AM		 1732 }
1733 else
1734 {
1735 bfd_vma contents;
1736
1737 contents = bfd_get_32 (abfd, address);
1738
1739 /* Get the (signed) value from the instruction. */
1740 addend = contents & howto->src_mask;
1741 if (addend & ((howto->src_mask + 1) >> 1))
1742 {
1743 bfd_signed_vma mask;
1744
1745 mask = -1;
1746 mask &= ~ howto->src_mask;
1747 addend |= mask;
1748 }
1749
1750 /* Add in the increment, (which is a byte value). */
1751 switch (howto->type)
1752 {
1753 default:
1754 addend += increment;
1755 break;
1756
1757 case R_ARM_PC24:
1758 addend <<= howto->size;
dc810e39 1759 addend += increment;
9a5aca8c
AM		 1760
1761 /* Should we check for overflow here ? */
1762
1763 /* Drop any undesired bits. */
1764 addend >>= howto->rightshift;
1765 break;
1766 }
1767
1768 contents = (contents & ~ howto->dst_mask) | (addend & howto->dst_mask);
1769
1770 bfd_put_32 (abfd, contents, address);
ddda4409 1771 }
98c1d4aa
NC		 1772}
1773#endif /* USE_REL */
252b5132
RH		 1774
1775/* Relocate an ARM ELF section. */
1776static boolean
1777elf32_arm_relocate_section (output_bfd, info, input_bfd, input_section,
1778 contents, relocs, local_syms, local_sections)
1779 bfd * output_bfd;
1780 struct bfd_link_info * info;
1781 bfd * input_bfd;
1782 asection * input_section;
1783 bfd_byte * contents;
1784 Elf_Internal_Rela * relocs;
1785 Elf_Internal_Sym * local_syms;
1786 asection ** local_sections;
1787{
1788 Elf_Internal_Shdr * symtab_hdr;
1789 struct elf_link_hash_entry ** sym_hashes;
1790 Elf_Internal_Rela * rel;
1791 Elf_Internal_Rela * relend;
1792 const char * name;
1793
1794 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1795 sym_hashes = elf_sym_hashes (input_bfd);
1796
1797 rel = relocs;
1798 relend = relocs + input_section->reloc_count;
1799 for (; rel < relend; rel++)
1800 {
ba96a88f
NC		 1801 int r_type;
1802 reloc_howto_type * howto;
1803 unsigned long r_symndx;
1804 Elf_Internal_Sym * sym;
1805 asection * sec;
252b5132 1806 struct elf_link_hash_entry * h;
ba96a88f
NC		 1807 bfd_vma relocation;
1808 bfd_reloc_status_type r;
1809 arelent bfd_reloc;
f21f3fe0 1810
252b5132 1811 r_symndx = ELF32_R_SYM (rel->r_info);
ba96a88f 1812 r_type = ELF32_R_TYPE (rel->r_info);
252b5132 1813
ba96a88f
NC		 1814 if ( r_type == R_ARM_GNU_VTENTRY
1815 || r_type == R_ARM_GNU_VTINHERIT)
252b5132
RH		 1816 continue;
1817
dc810e39
AM		 1818#ifdef USE_REL
1819 elf32_arm_info_to_howto (input_bfd, & bfd_reloc,
1820 (Elf_Internal_Rel *) rel);
1821#else
1822 elf32_arm_info_to_howto (input_bfd, & bfd_reloc, rel);
1823#endif
ba96a88f 1824 howto = bfd_reloc.howto;
252b5132
RH		 1825
1826 if (info->relocateable)
1827 {
1828 /* This is a relocateable link. We don't have to change
1829 anything, unless the reloc is against a section symbol,
1830 in which case we have to adjust according to where the
1831 section symbol winds up in the output section. */
1832 if (r_symndx < symtab_hdr->sh_info)
1833 {
1834 sym = local_syms + r_symndx;
1835 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1836 {
1837 sec = local_sections[r_symndx];
1838#ifdef USE_REL
98c1d4aa 1839 arm_add_to_rel (input_bfd, contents + rel->r_offset,
dc810e39
AM		 1840 howto,
1841 (bfd_signed_vma) (sec->output_offset
1842 + sym->st_value));
252b5132 1843#else
5fb1c3f2 1844 rel->r_addend += (sec->output_offset + sym->st_value);
252b5132
RH		 1845#endif
1846 }
1847 }
1848
1849 continue;
1850 }
1851
1852 /* This is a final link. */
1853 h = NULL;
1854 sym = NULL;
1855 sec = NULL;
9b485d32 1856
252b5132
RH		 1857 if (r_symndx < symtab_hdr->sh_info)
1858 {
1859 sym = local_syms + r_symndx;
1860 sec = local_sections[r_symndx];
1861 relocation = (sec->output_section->vma
1862 + sec->output_offset
1863 + sym->st_value);
1864 }
1865 else
1866 {
1867 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9b485d32
NC		 1868
1869 while ( h->root.type == bfd_link_hash_indirect
252b5132
RH		 1870 || h->root.type == bfd_link_hash_warning)
1871 h = (struct elf_link_hash_entry *) h->root.u.i.link;
9b485d32
NC		 1872
1873 if ( h->root.type == bfd_link_hash_defined
252b5132
RH		 1874 || h->root.type == bfd_link_hash_defweak)
1875 {
780a67af 1876 int relocation_needed = 1;
f21f3fe0 1877
780a67af 1878 sec = h->root.u.def.section;
f21f3fe0 1879
252b5132 1880 /* In these cases, we don't need the relocation value.
f21f3fe0 1881 We check specially because in some obscure cases
9b485d32 1882 sec->output_section will be NULL. */
252b5132
RH		 1883 switch (r_type)
1884 {
1885 case R_ARM_PC24:
1886 case R_ARM_ABS32:
6a360bf4 1887 case R_ARM_THM_PC22:
252b5132
RH		 1888 if (info->shared
1889 && (
99e4ae17 1890 (!info->symbolic && h->dynindx != -1)
97eaf9de 1891 || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
252b5132 1892 )
05924f36
PB		 1893 && ((input_section->flags & SEC_ALLOC) != 0
1894 /* DWARF will emit R_ARM_ABS32 relocations in its
1895 sections against symbols defined externally
1896 in shared libraries. We can't do anything
1897 with them here. */
1898 || ((input_section->flags & SEC_DEBUGGING) != 0
1899 && (h->elf_link_hash_flags
1900 & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
252b5132 1901 )
780a67af 1902 relocation_needed = 0;
252b5132 1903 break;
f21f3fe0 1904
252b5132 1905 case R_ARM_GOTPC:
780a67af 1906 relocation_needed = 0;
252b5132 1907 break;
f21f3fe0 1908
252b5132
RH		 1909 case R_ARM_GOT32:
1910 if (elf_hash_table(info)->dynamic_sections_created
1911 && (!info->shared
1912 || (!info->symbolic && h->dynindx != -1)
1913 || (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0
1914 )
1915 )
780a67af 1916 relocation_needed = 0;
252b5132 1917 break;
f21f3fe0 1918
252b5132
RH		 1919 case R_ARM_PLT32:
1920 if (h->plt.offset != (bfd_vma)-1)
780a67af 1921 relocation_needed = 0;
252b5132 1922 break;
f21f3fe0 1923
252b5132
RH		 1924 default:
1925 if (sec->output_section == NULL)
1926 {
1927 (*_bfd_error_handler)
6a360bf4
NC		 1928 (_("%s: warning: unresolvable relocation %d against symbol `%s' from %s section"),
1929 bfd_archive_filename (input_bfd),
1930 r_type,
1931 h->root.root.string,
252b5132 1932 bfd_get_section_name (input_bfd, input_section));
780a67af 1933 relocation_needed = 0;
252b5132
RH		 1934 }
1935 }
780a67af
NC		 1936
1937 if (relocation_needed)
1938 relocation = h->root.u.def.value
1939 + sec->output_section->vma
1940 + sec->output_offset;
1941 else
1942 relocation = 0;
252b5132
RH		 1943 }
1944 else if (h->root.type == bfd_link_hash_undefweak)
1945 relocation = 0;
3a27a730
L		 1946 else if (info->shared && !info->symbolic
1947 && !info->no_undefined
1948 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
a72747a3 1949 relocation = 0;
252b5132
RH		 1950 else
1951 {
1952 if (!((*info->callbacks->undefined_symbol)
1953 (info, h->root.root.string, input_bfd,
5cc7c785 1954 input_section, rel->r_offset,
3a27a730
L		 1955 (!info->shared || info->no_undefined
1956 || ELF_ST_VISIBILITY (h->other)))))
252b5132
RH		 1957 return false;
1958 relocation = 0;
1959 }
1960 }
1961
1962 if (h != NULL)
1963 name = h->root.root.string;
1964 else
1965 {
1966 name = (bfd_elf_string_from_elf_section
1967 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1968 if (name == NULL || *name == '\0')
1969 name = bfd_section_name (input_bfd, sec);
1970 }
f21f3fe0 1971
252b5132
RH		 1972 r = elf32_arm_final_link_relocate (howto, input_bfd, output_bfd,
1973 input_section, contents, rel,
1974 relocation, info, sec, name,
1975 (h ? ELF_ST_TYPE (h->type) :
780a67af 1976 ELF_ST_TYPE (sym->st_info)), h);
252b5132
RH		 1977
1978 if (r != bfd_reloc_ok)
1979 {
1980 const char * msg = (const char *) 0;
1981
1982 switch (r)
1983 {
1984 case bfd_reloc_overflow:
cf919dfd
PB		 1985 /* If the overflowing reloc was to an undefined symbol,
1986 we have already printed one error message and there
1987 is no point complaining again. */
1988 if ((! h ||
1989 h->root.type != bfd_link_hash_undefined)
1990 && (!((*info->callbacks->reloc_overflow)
1991 (info, name, howto->name, (bfd_vma) 0,
1992 input_bfd, input_section, rel->r_offset))))
1993 return false;
252b5132
RH		 1994 break;
1995
1996 case bfd_reloc_undefined:
1997 if (!((*info->callbacks->undefined_symbol)
1998 (info, name, input_bfd, input_section,
5cc7c785 1999 rel->r_offset, true)))
252b5132
RH		 2000 return false;
2001 break;
2002
2003 case bfd_reloc_outofrange:
9b485d32 2004 msg = _("internal error: out of range error");
252b5132
RH		 2005 goto common_error;
2006
2007 case bfd_reloc_notsupported:
9b485d32 2008 msg = _("internal error: unsupported relocation error");
252b5132
RH		 2009 goto common_error;
2010
2011 case bfd_reloc_dangerous:
9b485d32 2012 msg = _("internal error: dangerous error");
252b5132
RH		 2013 goto common_error;
2014
2015 default:
9b485d32 2016 msg = _("internal error: unknown error");
252b5132
RH		 2017 /* fall through */
2018
2019 common_error:
2020 if (!((*info->callbacks->warning)
2021 (info, msg, name, input_bfd, input_section,
2022 rel->r_offset)))
2023 return false;
2024 break;
2025 }
2026 }
2027 }
2028
2029 return true;
2030}
2031
fc830a83 2032/* Function to keep ARM specific flags in the ELF header. */
252b5132
RH		 2033static boolean
2034elf32_arm_set_private_flags (abfd, flags)
2035 bfd *abfd;
2036 flagword flags;
2037{
2038 if (elf_flags_init (abfd)
2039 && elf_elfheader (abfd)->e_flags != flags)
2040 {
fc830a83
NC		 2041 if (EF_ARM_EABI_VERSION (flags) == EF_ARM_EABI_UNKNOWN)
2042 {
fd2ec330 2043 if (flags & EF_ARM_INTERWORK)
8f615d07 2044 (*_bfd_error_handler) (_("\
252b5132 2045Warning: Not setting interwork flag of %s since it has already been specified as non-interworking"),
8f615d07 2046 bfd_archive_filename (abfd));
fc830a83 2047 else
63b0f745 2048 _bfd_error_handler (_("\
252b5132 2049Warning: Clearing the interwork flag of %s due to outside request"),
63b0f745 2050 bfd_archive_filename (abfd));
fc830a83 2051 }
252b5132
RH		 2052 }
2053 else
2054 {
2055 elf_elfheader (abfd)->e_flags = flags;
2056 elf_flags_init (abfd) = true;
2057 }
2058
2059 return true;
2060}
2061
fc830a83 2062/* Copy backend specific data from one object module to another. */
9b485d32 2063
252b5132
RH		 2064static boolean
2065elf32_arm_copy_private_bfd_data (ibfd, obfd)
2066 bfd *ibfd;
2067 bfd *obfd;
2068{
2069 flagword in_flags;
2070 flagword out_flags;
2071
fc830a83 2072 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
252b5132
RH		 2073 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2074 return true;
2075
fc830a83 2076 in_flags = elf_elfheader (ibfd)->e_flags;
252b5132
RH		 2077 out_flags = elf_elfheader (obfd)->e_flags;
2078
fc830a83
NC		 2079 if (elf_flags_init (obfd)
2080 && EF_ARM_EABI_VERSION (out_flags) == EF_ARM_EABI_UNKNOWN
2081 && in_flags != out_flags)
252b5132 2082 {
252b5132 2083 /* Cannot mix APCS26 and APCS32 code. */
fd2ec330 2084 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
252b5132
RH		 2085 return false;
2086
2087 /* Cannot mix float APCS and non-float APCS code. */
fd2ec330 2088 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
252b5132
RH		 2089 return false;
2090
2091 /* If the src and dest have different interworking flags
2092 then turn off the interworking bit. */
fd2ec330 2093 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
252b5132 2094 {
fd2ec330 2095 if (out_flags & EF_ARM_INTERWORK)
63b0f745 2096 _bfd_error_handler (_("\
252b5132 2097Warning: Clearing the interwork flag in %s because non-interworking code in %s has been linked with it"),
06317a27 2098 bfd_get_filename (obfd),
63b0f745 2099 bfd_archive_filename (ibfd));
252b5132 2100
fd2ec330 2101 in_flags &= ~EF_ARM_INTERWORK;
252b5132 2102 }
1006ba19
PB		 2103
2104 /* Likewise for PIC, though don't warn for this case. */
fd2ec330
PB		 2105 if ((in_flags & EF_ARM_PIC) != (out_flags & EF_ARM_PIC))
2106 in_flags &= ~EF_ARM_PIC;
252b5132
RH		 2107 }
2108
2109 elf_elfheader (obfd)->e_flags = in_flags;
2110 elf_flags_init (obfd) = true;
2111
2112 return true;
2113}
2114
2115/* Merge backend specific data from an object file to the output
2116 object file when linking. */
9b485d32 2117
252b5132
RH		 2118static boolean
2119elf32_arm_merge_private_bfd_data (ibfd, obfd)
fc830a83
NC		 2120 bfd * ibfd;
2121 bfd * obfd;
252b5132
RH		 2122{
2123 flagword out_flags;
2124 flagword in_flags;
1006ba19 2125 boolean flags_compatible = true;
cf919dfd
PB		 2126 boolean null_input_bfd = true;
2127 asection *sec;
252b5132 2128
9b485d32 2129 /* Check if we have the same endianess. */
1fe494a5
NC		 2130 if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
2131 return false;
2132
252b5132
RH		 2133 if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
2134 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
2135 return true;
2136
252b5132
RH		 2137 /* The input BFD must have had its flags initialised. */
2138 /* The following seems bogus to me -- The flags are initialized in
2139 the assembler but I don't think an elf_flags_init field is
9b485d32 2140 written into the object. */
252b5132
RH		 2141 /* BFD_ASSERT (elf_flags_init (ibfd)); */
2142
2143 in_flags = elf_elfheader (ibfd)->e_flags;
2144 out_flags = elf_elfheader (obfd)->e_flags;
2145
2146 if (!elf_flags_init (obfd))
2147 {
fe077fa6
NC		 2148 /* If the input is the default architecture and had the default
2149 flags then do not bother setting the flags for the output
2150 architecture, instead allow future merges to do this. If no
2151 future merges ever set these flags then they will retain their
2152 uninitialised values, which surprise surprise, correspond
252b5132 2153 to the default values. */
fe077fa6
NC		 2154 if (bfd_get_arch_info (ibfd)->the_default
2155 && elf_elfheader (ibfd)->e_flags == 0)
252b5132
RH		 2156 return true;
2157
2158 elf_flags_init (obfd) = true;
2159 elf_elfheader (obfd)->e_flags = in_flags;
2160
2161 if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
2162 && bfd_get_arch_info (obfd)->the_default)
2163 return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), bfd_get_mach (ibfd));
2164
2165 return true;
2166 }
2167
1006ba19 2168 /* Identical flags must be compatible. */
252b5132
RH		 2169 if (in_flags == out_flags)
2170 return true;
2171
cf919dfd
PB		 2172 /* Check to see if the input BFD actually contains any sections.
2173 If not, its flags may not have been initialised either, but it cannot
2174 actually cause any incompatibility. */
2175 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
2176 {
2177 /* Ignore synthetic glue sections. */
2178 if (strcmp (sec->name, ".glue_7")
2179 && strcmp (sec->name, ".glue_7t"))
2180 {
2181 null_input_bfd = false;
2182 break;
2183 }
2184 }
2185 if (null_input_bfd)
2186 return true;
2187
252b5132 2188 /* Complain about various flag mismatches. */
fc830a83
NC		 2189 if (EF_ARM_EABI_VERSION (in_flags) != EF_ARM_EABI_VERSION (out_flags))
2190 {
63b0f745 2191 _bfd_error_handler (_("\
fc830a83 2192Error: %s compiled for EABI version %d, whereas %s is compiled for version %d"),
63b0f745
NC		 2193 bfd_archive_filename (ibfd),
2194 (in_flags & EF_ARM_EABIMASK) >> 24,
06317a27 2195 bfd_get_filename (obfd),
63b0f745 2196 (out_flags & EF_ARM_EABIMASK) >> 24);
1006ba19 2197 return false;
fc830a83 2198 }
252b5132 2199
1006ba19
PB		 2200 /* Not sure what needs to be checked for EABI versions >= 1. */
2201 if (EF_ARM_EABI_VERSION (in_flags) == EF_ARM_EABI_UNKNOWN)
2202 {
fd2ec330 2203 if ((in_flags & EF_ARM_APCS_26) != (out_flags & EF_ARM_APCS_26))
1006ba19 2204 {
63b0f745 2205 _bfd_error_handler (_("\
252b5132 2206Error: %s compiled for APCS-%d, whereas %s is compiled for APCS-%d"),
63b0f745
NC		 2207 bfd_archive_filename (ibfd),
2208 in_flags & EF_ARM_APCS_26 ? 26 : 32,
06317a27 2209 bfd_get_filename (obfd),
63b0f745 2210 out_flags & EF_ARM_APCS_26 ? 26 : 32);
1006ba19
PB		 2211 flags_compatible = false;
2212 }
252b5132 2213
fd2ec330 2214 if ((in_flags & EF_ARM_APCS_FLOAT) != (out_flags & EF_ARM_APCS_FLOAT))
1006ba19 2215 {
63b0f745
NC		 2216 char *s1 = in_flags & EF_ARM_APCS_FLOAT ? _("float") : _("integer");
2217 char *s2 = out_flags & EF_ARM_APCS_FLOAT ? _("float") : _("integer");
2218
2219 _bfd_error_handler (_("\
252b5132 2220Error: %s passes floats in %s registers, whereas %s passes them in %s registers"),
63b0f745 2221 bfd_archive_filename (ibfd), s1,
06317a27 2222 bfd_get_filename (obfd), s2);
1006ba19
PB		 2223 flags_compatible = false;
2224 }
252b5132 2225
fd2ec330
PB		 2226#ifdef EF_ARM_SOFT_FLOAT
2227 if ((in_flags & EF_ARM_SOFT_FLOAT) != (out_flags & EF_ARM_SOFT_FLOAT))
1006ba19 2228 {
63b0f745 2229 char *s1 = in_flags & EF_ARM_SOFT_FLOAT ? _("soft") : _("hard");
8f615d07 2230 char *s2 = out_flags & EF_ARM_SOFT_FLOAT ? _("soft") : _("hard");
63b0f745
NC		 2231
2232 _bfd_error_handler (_ ("\
1006ba19 2233Error: %s uses %s floating point, whereas %s uses %s floating point"),
63b0f745 2234 bfd_archive_filename (ibfd), s1,
06317a27 2235 bfd_get_filename (obfd), s2);
1006ba19
PB		 2236 flags_compatible = false;
2237 }
ee43f35e 2238#endif
252b5132 2239
1006ba19 2240 /* Interworking mismatch is only a warning. */
fd2ec330 2241 if ((in_flags & EF_ARM_INTERWORK) != (out_flags & EF_ARM_INTERWORK))
8f615d07
AM		 2242 {
2243 char *s1 = (in_flags & EF_ARM_INTERWORK
2244 ? _("supports") : _("does not support"));
2245 char *s2 = out_flags & EF_ARM_INTERWORK ? _("does") : _("does not");
63b0f745
NC		 2246
2247 _bfd_error_handler (_("\
252b5132 2248Warning: %s %s interworking, whereas %s %s"),
63b0f745 2249 bfd_archive_filename (ibfd), s1,
06317a27 2250 bfd_get_filename (obfd), s2);
8f615d07 2251 }
252b5132 2252 }
63b0f745 2253
1006ba19 2254 return flags_compatible;
252b5132
RH		 2255}
2256
9b485d32
NC		 2257/* Display the flags field. */
2258
252b5132
RH		 2259static boolean
2260elf32_arm_print_private_bfd_data (abfd, ptr)
2261 bfd *abfd;
2262 PTR ptr;
2263{
fc830a83
NC		 2264 FILE * file = (FILE *) ptr;
2265 unsigned long flags;
252b5132
RH		 2266
2267 BFD_ASSERT (abfd != NULL && ptr != NULL);
2268
2269 /* Print normal ELF private data. */
2270 _bfd_elf_print_private_bfd_data (abfd, ptr);
2271
fc830a83 2272 flags = elf_elfheader (abfd)->e_flags;
9b485d32
NC		 2273 /* Ignore init flag - it may not be set, despite the flags field
2274 containing valid data. */
252b5132
RH		 2275
2276 /* xgettext:c-format */
9b485d32 2277 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
252b5132 2278
fc830a83
NC		 2279 switch (EF_ARM_EABI_VERSION (flags))
2280 {
2281 case EF_ARM_EABI_UNKNOWN:
2282 /* The following flag bits are GNU extenstions and not part of the
2283 official ARM ELF extended ABI. Hence they are only decoded if
2284 the EABI version is not set. */
fd2ec330 2285 if (flags & EF_ARM_INTERWORK)
9b485d32 2286 fprintf (file, _(" [interworking enabled]"));
9a5aca8c 2287
fd2ec330 2288 if (flags & EF_ARM_APCS_26)
9b485d32 2289 fprintf (file, _(" [APCS-26]"));
fc830a83 2290 else
9b485d32 2291 fprintf (file, _(" [APCS-32]"));
9a5aca8c 2292
fd2ec330 2293 if (flags & EF_ARM_APCS_FLOAT)
9b485d32 2294 fprintf (file, _(" [floats passed in float registers]"));
9a5aca8c 2295
fd2ec330 2296 if (flags & EF_ARM_PIC)
9b485d32 2297 fprintf (file, _(" [position independent]"));
fc830a83 2298
fd2ec330 2299 if (flags & EF_ARM_NEW_ABI)
9b485d32 2300 fprintf (file, _(" [new ABI]"));
9a5aca8c 2301
fd2ec330 2302 if (flags & EF_ARM_OLD_ABI)
9b485d32 2303 fprintf (file, _(" [old ABI]"));
9a5aca8c 2304
fd2ec330 2305 if (flags & EF_ARM_SOFT_FLOAT)
9b485d32 2306 fprintf (file, _(" [software FP]"));
9a5aca8c 2307
fd2ec330
PB		 2308 flags &= ~(EF_ARM_INTERWORK | EF_ARM_APCS_26 | EF_ARM_APCS_FLOAT | EF_ARM_PIC
2309 | EF_ARM_NEW_ABI | EF_ARM_OLD_ABI | EF_ARM_SOFT_FLOAT);
fc830a83 2310 break;
9a5aca8c 2311
fc830a83 2312 case EF_ARM_EABI_VER1:
9b485d32 2313 fprintf (file, _(" [Version1 EABI]"));
9a5aca8c 2314
fc830a83 2315 if (flags & EF_ARM_SYMSARESORTED)
9b485d32 2316 fprintf (file, _(" [sorted symbol table]"));
fc830a83 2317 else
9b485d32 2318 fprintf (file, _(" [unsorted symbol table]"));
9a5aca8c 2319
fc830a83
NC		 2320 flags &= ~ EF_ARM_SYMSARESORTED;
2321 break;
9a5aca8c 2322
fd2ec330
PB		 2323 case EF_ARM_EABI_VER2:
2324 fprintf (file, _(" [Version2 EABI]"));
2325
2326 if (flags & EF_ARM_SYMSARESORTED)
2327 fprintf (file, _(" [sorted symbol table]"));
2328 else
2329 fprintf (file, _(" [unsorted symbol table]"));
2330
2331 if (flags & EF_ARM_DYNSYMSUSESEGIDX)
2332 fprintf (file, _(" [dynamic symbols use segment index]"));
2333
2334 if (flags & EF_ARM_MAPSYMSFIRST)
2335 fprintf (file, _(" [mapping symbols precede others]"));
2336
99e4ae17 2337 flags &= ~(EF_ARM_SYMSARESORTED | EF_ARM_DYNSYMSUSESEGIDX
fd2ec330
PB		 2338 | EF_ARM_MAPSYMSFIRST);
2339 break;
2340
fc830a83 2341 default:
9b485d32 2342 fprintf (file, _(" <EABI version unrecognised>"));
fc830a83
NC		 2343 break;
2344 }
252b5132 2345
fc830a83 2346 flags &= ~ EF_ARM_EABIMASK;
252b5132 2347
fc830a83 2348 if (flags & EF_ARM_RELEXEC)
9b485d32 2349 fprintf (file, _(" [relocatable executable]"));
252b5132 2350
fc830a83 2351 if (flags & EF_ARM_HASENTRY)
9b485d32 2352 fprintf (file, _(" [has entry point]"));
252b5132 2353
fc830a83
NC		 2354 flags &= ~ (EF_ARM_RELEXEC | EF_ARM_HASENTRY);
2355
2356 if (flags)
9b485d32 2357 fprintf (file, _("<Unrecognised flag bits set>"));
9a5aca8c 2358
252b5132
RH		 2359 fputc ('\n', file);
2360
2361 return true;
2362}
2363
2364static int
2365elf32_arm_get_symbol_type (elf_sym, type)
2366 Elf_Internal_Sym * elf_sym;
2367 int type;
2368{
2f0ca46a
NC		 2369 switch (ELF_ST_TYPE (elf_sym->st_info))
2370 {
2371 case STT_ARM_TFUNC:
2372 return ELF_ST_TYPE (elf_sym->st_info);
ce855c42 2373
2f0ca46a
NC		 2374 case STT_ARM_16BIT:
2375 /* If the symbol is not an object, return the STT_ARM_16BIT flag.
2376 This allows us to distinguish between data used by Thumb instructions
2377 and non-data (which is probably code) inside Thumb regions of an
2378 executable. */
2379 if (type != STT_OBJECT)
2380 return ELF_ST_TYPE (elf_sym->st_info);
2381 break;
9a5aca8c 2382
ce855c42
NC		 2383 default:
2384 break;
2f0ca46a
NC		 2385 }
2386
2387 return type;
252b5132 2388}
f21f3fe0 2389
252b5132
RH		 2390static asection *
2391elf32_arm_gc_mark_hook (abfd, info, rel, h, sym)
2392 bfd *abfd;
5f771d47 2393 struct bfd_link_info *info ATTRIBUTE_UNUSED;
252b5132
RH		 2394 Elf_Internal_Rela *rel;
2395 struct elf_link_hash_entry *h;
2396 Elf_Internal_Sym *sym;
2397{
2398 if (h != NULL)
2399 {
2400 switch (ELF32_R_TYPE (rel->r_info))
2401 {
2402 case R_ARM_GNU_VTINHERIT:
2403 case R_ARM_GNU_VTENTRY:
2404 break;
2405
2406 default:
2407 switch (h->root.type)
2408 {
2409 case bfd_link_hash_defined:
2410 case bfd_link_hash_defweak:
2411 return h->root.u.def.section;
2412
2413 case bfd_link_hash_common:
2414 return h->root.u.c.p->section;
e049a0de
ILT		 2415
2416 default:
2417 break;
252b5132
RH		 2418 }
2419 }
2420 }
2421 else
2422 {
2423 if (!(elf_bad_symtab (abfd)
2424 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
2425 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
2426 && sym->st_shndx != SHN_COMMON))
2427 {
2428 return bfd_section_from_elf_index (abfd, sym->st_shndx);
2429 }
2430 }
2431 return NULL;
2432}
2433
780a67af
NC		 2434/* Update the got entry reference counts for the section being removed. */
2435
252b5132
RH		 2436static boolean
2437elf32_arm_gc_sweep_hook (abfd, info, sec, relocs)
5f771d47
ILT		 2438 bfd *abfd ATTRIBUTE_UNUSED;
2439 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2440 asection *sec ATTRIBUTE_UNUSED;
2441 const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
252b5132 2442{
780a67af 2443 /* We don't support garbage collection of GOT and PLT relocs yet. */
252b5132
RH		 2444 return true;
2445}
2446
780a67af
NC		 2447/* Look through the relocs for a section during the first phase. */
2448
252b5132
RH		 2449static boolean
2450elf32_arm_check_relocs (abfd, info, sec, relocs)
2451 bfd * abfd;
2452 struct bfd_link_info * info;
2453 asection * sec;
2454 const Elf_Internal_Rela * relocs;
2455{
2456 Elf_Internal_Shdr * symtab_hdr;
2457 struct elf_link_hash_entry ** sym_hashes;
2458 struct elf_link_hash_entry ** sym_hashes_end;
2459 const Elf_Internal_Rela * rel;
2460 const Elf_Internal_Rela * rel_end;
2461 bfd * dynobj;
2462 asection * sgot, *srelgot, *sreloc;
2463 bfd_vma * local_got_offsets;
9a5aca8c 2464
252b5132
RH		 2465 if (info->relocateable)
2466 return true;
9a5aca8c 2467
252b5132 2468 sgot = srelgot = sreloc = NULL;
9a5aca8c 2469
252b5132
RH		 2470 dynobj = elf_hash_table (info)->dynobj;
2471 local_got_offsets = elf_local_got_offsets (abfd);
f21f3fe0 2472
252b5132
RH		 2473 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2474 sym_hashes = elf_sym_hashes (abfd);
9b485d32
NC		 2475 sym_hashes_end = sym_hashes
2476 + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
2477
252b5132
RH		 2478 if (!elf_bad_symtab (abfd))
2479 sym_hashes_end -= symtab_hdr->sh_info;
9b485d32 2480
252b5132
RH		 2481 rel_end = relocs + sec->reloc_count;
2482 for (rel = relocs; rel < rel_end; rel++)
2483 {
2484 struct elf_link_hash_entry *h;
2485 unsigned long r_symndx;
9a5aca8c 2486
252b5132
RH		 2487 r_symndx = ELF32_R_SYM (rel->r_info);
2488 if (r_symndx < symtab_hdr->sh_info)
2489 h = NULL;
2490 else
2491 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
9a5aca8c 2492
252b5132
RH		 2493 /* Some relocs require a global offset table. */
2494 if (dynobj == NULL)
2495 {
2496 switch (ELF32_R_TYPE (rel->r_info))
2497 {
2498 case R_ARM_GOT32:
2499 case R_ARM_GOTOFF:
2500 case R_ARM_GOTPC:
2501 elf_hash_table (info)->dynobj = dynobj = abfd;
2502 if (! _bfd_elf_create_got_section (dynobj, info))
2503 return false;
2504 break;
2505
2506 default:
2507 break;
2508 }
2509 }
2510
2511 switch (ELF32_R_TYPE (rel->r_info))
2512 {
2513 case R_ARM_GOT32:
2514 /* This symbol requires a global offset table entry. */
2515 if (sgot == NULL)
2516 {
2517 sgot = bfd_get_section_by_name (dynobj, ".got");
2518 BFD_ASSERT (sgot != NULL);
2519 }
2520
2521 /* Get the got relocation section if necessary. */
2522 if (srelgot == NULL
2523 && (h != NULL || info->shared))
2524 {
2525 srelgot = bfd_get_section_by_name (dynobj, ".rel.got");
9a5aca8c 2526
252b5132
RH		 2527 /* If no got relocation section, make one and initialize. */
2528 if (srelgot == NULL)
2529 {
2530 srelgot = bfd_make_section (dynobj, ".rel.got");
2531 if (srelgot == NULL
2532 || ! bfd_set_section_flags (dynobj, srelgot,
99e4ae17 2533 (SEC_ALLOC
252b5132
RH		 2534 | SEC_LOAD
2535 | SEC_HAS_CONTENTS
2536 | SEC_IN_MEMORY
2537 | SEC_LINKER_CREATED
2538 | SEC_READONLY))
2539 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2540 return false;
2541 }
2542 }
2543
2544 if (h != NULL)
2545 {
2546 if (h->got.offset != (bfd_vma) -1)
2547 /* We have already allocated space in the .got. */
2548 break;
f21f3fe0 2549
252b5132
RH		 2550 h->got.offset = sgot->_raw_size;
2551
2552 /* Make sure this symbol is output as a dynamic symbol. */
2553 if (h->dynindx == -1)
2554 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2555 return false;
2556
2557 srelgot->_raw_size += sizeof (Elf32_External_Rel);
2558 }
2559 else
2560 {
99e4ae17 2561 /* This is a global offset table entry for a local
252b5132
RH		 2562 symbol. */
2563 if (local_got_offsets == NULL)
2564 {
dc810e39 2565 bfd_size_type size;
63b0f745 2566 unsigned int i;
252b5132 2567
dc810e39
AM		 2568 size = symtab_hdr->sh_info;
2569 size *= sizeof (bfd_vma);
252b5132
RH		 2570 local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
2571 if (local_got_offsets == NULL)
2572 return false;
2573 elf_local_got_offsets (abfd) = local_got_offsets;
2574 for (i = 0; i < symtab_hdr->sh_info; i++)
2575 local_got_offsets[i] = (bfd_vma) -1;
2576 }
f21f3fe0 2577
252b5132
RH		 2578 if (local_got_offsets[r_symndx] != (bfd_vma) -1)
2579 /* We have already allocated space in the .got. */
2580 break;
2581
2582 local_got_offsets[r_symndx] = sgot->_raw_size;
2583
2584 if (info->shared)
2585 /* If we are generating a shared object, we need to
2586 output a R_ARM_RELATIVE reloc so that the dynamic
2587 linker can adjust this GOT entry. */
2588 srelgot->_raw_size += sizeof (Elf32_External_Rel);
2589 }
2590
2591 sgot->_raw_size += 4;
2592 break;
2593
99e4ae17 2594 case R_ARM_PLT32:
252b5132
RH		 2595 /* This symbol requires a procedure linkage table entry. We
2596 actually build the entry in adjust_dynamic_symbol,
2597 because this might be a case of linking PIC code which is
2598 never referenced by a dynamic object, in which case we
2599 don't need to generate a procedure linkage table entry
2600 after all. */
2601
2602 /* If this is a local symbol, we resolve it directly without
2603 creating a procedure linkage table entry. */
2604 if (h == NULL)
2605 continue;
2606
2607 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2608 break;
2609
2610 case R_ARM_ABS32:
2611 case R_ARM_REL32:
2612 case R_ARM_PC24:
2613 /* If we are creating a shared library, and this is a reloc
2614 against a global symbol, or a non PC relative reloc
2615 against a local symbol, then we need to copy the reloc
2616 into the shared library. However, if we are linking with
2617 -Bsymbolic, we do not need to copy a reloc against a
2618 global symbol which is defined in an object we are
2619 including in the link (i.e., DEF_REGULAR is set). At
2620 this point we have not seen all the input files, so it is
2621 possible that DEF_REGULAR is not set now but will be set
2622 later (it is never cleared). We account for that
2623 possibility below by storing information in the
2624 pcrel_relocs_copied field of the hash table entry. */
2625 if (info->shared
2626 && (ELF32_R_TYPE (rel->r_info) != R_ARM_PC24
2627 || (h != NULL
2628 && (! info->symbolic
2629 || (h->elf_link_hash_flags
2630 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2631 {
2632 /* When creating a shared object, we must copy these
2633 reloc types into the output file. We create a reloc
2634 section in dynobj and make room for this reloc. */
2635 if (sreloc == NULL)
2636 {
2637 const char * name;
2638
2639 name = (bfd_elf_string_from_elf_section
2640 (abfd,
2641 elf_elfheader (abfd)->e_shstrndx,
2642 elf_section_data (sec)->rel_hdr.sh_name));
2643 if (name == NULL)
2644 return false;
2645
2646 BFD_ASSERT (strncmp (name, ".rel", 4) == 0
99e4ae17 2647 && strcmp (bfd_get_section_name (abfd, sec),
252b5132
RH		 2648 name + 4) == 0);
2649
2650 sreloc = bfd_get_section_by_name (dynobj, name);
2651 if (sreloc == NULL)
2652 {
2653 flagword flags;
2654
2655 sreloc = bfd_make_section (dynobj, name);
2656 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2657 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2658 if ((sec->flags & SEC_ALLOC) != 0)
2659 flags |= SEC_ALLOC | SEC_LOAD;
2660 if (sreloc == NULL
2661 || ! bfd_set_section_flags (dynobj, sreloc, flags)
2662 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
2663 return false;
2664 }
99e4ae17
AJ		 2665 if (sec->flags & SEC_READONLY)
2666 info->flags |= DF_TEXTREL;
252b5132
RH		 2667 }
2668
2669 sreloc->_raw_size += sizeof (Elf32_External_Rel);
2670 /* If we are linking with -Bsymbolic, and this is a
2671 global symbol, we count the number of PC relative
2672 relocations we have entered for this symbol, so that
2673 we can discard them again if the symbol is later
2674 defined by a regular object. Note that this function
2675 is only called if we are using an elf_i386 linker
2676 hash table, which means that h is really a pointer to
2677 an elf_i386_link_hash_entry. */
2678 if (h != NULL && info->symbolic
2679 && ELF32_R_TYPE (rel->r_info) == R_ARM_PC24)
2680 {
2681 struct elf32_arm_link_hash_entry * eh;
2682 struct elf32_arm_pcrel_relocs_copied * p;
2683
2684 eh = (struct elf32_arm_link_hash_entry *) h;
2685
2686 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2687 if (p->section == sreloc)
2688 break;
2689
2690 if (p == NULL)
2691 {
2692 p = ((struct elf32_arm_pcrel_relocs_copied *)
dc810e39 2693 bfd_alloc (dynobj, (bfd_size_type) sizeof * p));
252b5132
RH		 2694 if (p == NULL)
2695 return false;
2696 p->next = eh->pcrel_relocs_copied;
2697 eh->pcrel_relocs_copied = p;
2698 p->section = sreloc;
2699 p->count = 0;
2700 }
2701
2702 ++p->count;
2703 }
2704 }
2705 break;
2706
2707 /* This relocation describes the C++ object vtable hierarchy.
2708 Reconstruct it for later use during GC. */
2709 case R_ARM_GNU_VTINHERIT:
2710 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2711 return false;
2712 break;
9a5aca8c 2713
252b5132
RH		 2714 /* This relocation describes which C++ vtable entries are actually
2715 used. Record for later use during GC. */
2716 case R_ARM_GNU_VTENTRY:
d512aa07 2717 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_offset))
252b5132
RH		 2718 return false;
2719 break;
2720 }
2721 }
f21f3fe0 2722
252b5132
RH		 2723 return true;
2724}
2725
252b5132
RH		 2726/* Find the nearest line to a particular section and offset, for error
2727 reporting. This code is a duplicate of the code in elf.c, except
9b485d32 2728 that it also accepts STT_ARM_TFUNC as a symbol that names a function. */
252b5132
RH		 2729
2730static boolean
2731elf32_arm_find_nearest_line
2732 (abfd, section, symbols, offset, filename_ptr, functionname_ptr, line_ptr)
2733 bfd * abfd;
2734 asection * section;
2735 asymbol ** symbols;
2736 bfd_vma offset;
917583ad
NC		 2737 const char ** filename_ptr;
2738 const char ** functionname_ptr;
252b5132
RH		 2739 unsigned int * line_ptr;
2740{
2741 boolean found;
2742 const char * filename;
2743 asymbol * func;
2744 bfd_vma low_func;
2745 asymbol ** p;
2746
2747 if (_bfd_dwarf2_find_nearest_line (abfd, section, symbols, offset,
f21f3fe0 2748 filename_ptr, functionname_ptr,
857ec808
NC		 2749 line_ptr, 0,
2750 &elf_tdata (abfd)->dwarf2_find_line_info))
252b5132
RH		 2751 return true;
2752
2753 if (! _bfd_stab_section_find_nearest_line (abfd, symbols, section, offset,
2754 &found, filename_ptr,
2755 functionname_ptr, line_ptr,
2756 &elf_tdata (abfd)->line_info))
2757 return false;
f21f3fe0 2758
252b5132
RH		 2759 if (found)
2760 return true;
2761
2762 if (symbols == NULL)
2763 return false;
2764
2765 filename = NULL;
2766 func = NULL;
2767 low_func = 0;
2768
2769 for (p = symbols; *p != NULL; p++)
2770 {
2771 elf_symbol_type *q;
2772
2773 q = (elf_symbol_type *) *p;
2774
2775 if (bfd_get_section (&q->symbol) != section)
2776 continue;
2777
2778 switch (ELF_ST_TYPE (q->internal_elf_sym.st_info))
2779 {
2780 default:
2781 break;
2782 case STT_FILE:
2783 filename = bfd_asymbol_name (&q->symbol);
2784 break;
2785 case STT_NOTYPE:
2786 case STT_FUNC:
2787 case STT_ARM_TFUNC:
2788 if (q->symbol.section == section
2789 && q->symbol.value >= low_func
2790 && q->symbol.value <= offset)
2791 {
2792 func = (asymbol *) q;
2793 low_func = q->symbol.value;
2794 }
2795 break;
2796 }
2797 }
2798
2799 if (func == NULL)
2800 return false;
2801
2802 *filename_ptr = filename;
2803 *functionname_ptr = bfd_asymbol_name (func);
2804 *line_ptr = 0;
f21f3fe0 2805
252b5132
RH		 2806 return true;
2807}
2808
2809/* Adjust a symbol defined by a dynamic object and referenced by a
2810 regular object. The current definition is in some section of the
2811 dynamic object, but we're not including those sections. We have to
2812 change the definition to something the rest of the link can
2813 understand. */
2814
2815static boolean
2816elf32_arm_adjust_dynamic_symbol (info, h)
2817 struct bfd_link_info * info;
2818 struct elf_link_hash_entry * h;
2819{
2820 bfd * dynobj;
2821 asection * s;
2822 unsigned int power_of_two;
2823
2824 dynobj = elf_hash_table (info)->dynobj;
2825
2826 /* Make sure we know what is going on here. */
2827 BFD_ASSERT (dynobj != NULL
2828 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
2829 || h->weakdef != NULL
2830 || ((h->elf_link_hash_flags
2831 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
2832 && (h->elf_link_hash_flags
2833 & ELF_LINK_HASH_REF_REGULAR) != 0
2834 && (h->elf_link_hash_flags
2835 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
2836
2837 /* If this is a function, put it in the procedure linkage table. We
2838 will fill in the contents of the procedure linkage table later,
2839 when we know the address of the .got section. */
2840 if (h->type == STT_FUNC
2841 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
2842 {
2843 if (! info->shared
2844 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
2845 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
2846 {
2847 /* This case can occur if we saw a PLT32 reloc in an input
2848 file, but the symbol was never referred to by a dynamic
2849 object. In such a case, we don't actually need to build
2850 a procedure linkage table, and we can just do a PC32
2851 reloc instead. */
2852 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
2853 return true;
2854 }
2855
2856 /* Make sure this symbol is output as a dynamic symbol. */
2857 if (h->dynindx == -1)
2858 {
2859 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2860 return false;
2861 }
2862
2863 s = bfd_get_section_by_name (dynobj, ".plt");
2864 BFD_ASSERT (s != NULL);
2865
2866 /* If this is the first .plt entry, make room for the special
2867 first entry. */
2868 if (s->_raw_size == 0)
2869 s->_raw_size += PLT_ENTRY_SIZE;
2870
2871 /* If this symbol is not defined in a regular file, and we are
2872 not generating a shared library, then set the symbol to this
2873 location in the .plt. This is required to make function
2874 pointers compare as equal between the normal executable and
2875 the shared library. */
2876 if (! info->shared
2877 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2878 {
2879 h->root.u.def.section = s;
2880 h->root.u.def.value = s->_raw_size;
2881 }
2882
2883 h->plt.offset = s->_raw_size;
2884
2885 /* Make room for this entry. */
2886 s->_raw_size += PLT_ENTRY_SIZE;
2887
2888 /* We also need to make an entry in the .got.plt section, which
2889 will be placed in the .got section by the linker script. */
252b5132
RH		 2890 s = bfd_get_section_by_name (dynobj, ".got.plt");
2891 BFD_ASSERT (s != NULL);
2892 s->_raw_size += 4;
2893
2894 /* We also need to make an entry in the .rel.plt section. */
2895
2896 s = bfd_get_section_by_name (dynobj, ".rel.plt");
2897 BFD_ASSERT (s != NULL);
2898 s->_raw_size += sizeof (Elf32_External_Rel);
2899
2900 return true;
2901 }
2902
2903 /* If this is a weak symbol, and there is a real definition, the
2904 processor independent code will have arranged for us to see the
2905 real definition first, and we can just use the same value. */
2906 if (h->weakdef != NULL)
2907 {
2908 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
2909 || h->weakdef->root.type == bfd_link_hash_defweak);
2910 h->root.u.def.section = h->weakdef->root.u.def.section;
2911 h->root.u.def.value = h->weakdef->root.u.def.value;
2912 return true;
2913 }
2914
2915 /* This is a reference to a symbol defined by a dynamic object which
2916 is not a function. */
2917
2918 /* If we are creating a shared library, we must presume that the
2919 only references to the symbol are via the global offset table.
2920 For such cases we need not do anything here; the relocations will
2921 be handled correctly by relocate_section. */
2922 if (info->shared)
2923 return true;
2924
2925 /* We must allocate the symbol in our .dynbss section, which will
2926 become part of the .bss section of the executable. There will be
2927 an entry for this symbol in the .dynsym section. The dynamic
2928 object will contain position independent code, so all references
2929 from the dynamic object to this symbol will go through the global
2930 offset table. The dynamic linker will use the .dynsym entry to
2931 determine the address it must put in the global offset table, so
2932 both the dynamic object and the regular object will refer to the
2933 same memory location for the variable. */
252b5132
RH		 2934 s = bfd_get_section_by_name (dynobj, ".dynbss");
2935 BFD_ASSERT (s != NULL);
2936
2937 /* We must generate a R_ARM_COPY reloc to tell the dynamic linker to
2938 copy the initial value out of the dynamic object and into the
2939 runtime process image. We need to remember the offset into the
2940 .rel.bss section we are going to use. */
2941 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2942 {
2943 asection *srel;
2944
2945 srel = bfd_get_section_by_name (dynobj, ".rel.bss");
2946 BFD_ASSERT (srel != NULL);
2947 srel->_raw_size += sizeof (Elf32_External_Rel);
2948 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
2949 }
2950
2951 /* We need to figure out the alignment required for this symbol. I
2952 have no idea how ELF linkers handle this. */
2953 power_of_two = bfd_log2 (h->size);
2954 if (power_of_two > 3)
2955 power_of_two = 3;
2956
2957 /* Apply the required alignment. */
2958 s->_raw_size = BFD_ALIGN (s->_raw_size,
2959 (bfd_size_type) (1 << power_of_two));
2960 if (power_of_two > bfd_get_section_alignment (dynobj, s))
2961 {
2962 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
2963 return false;
2964 }
2965
2966 /* Define the symbol as being at this point in the section. */
2967 h->root.u.def.section = s;
2968 h->root.u.def.value = s->_raw_size;
2969
2970 /* Increment the section size to make room for the symbol. */
2971 s->_raw_size += h->size;
2972
2973 return true;
2974}
2975
2976/* Set the sizes of the dynamic sections. */
2977
2978static boolean
2979elf32_arm_size_dynamic_sections (output_bfd, info)
99e4ae17 2980 bfd * output_bfd ATTRIBUTE_UNUSED;
252b5132
RH		 2981 struct bfd_link_info * info;
2982{
2983 bfd * dynobj;
2984 asection * s;
2985 boolean plt;
2986 boolean relocs;
252b5132
RH		 2987
2988 dynobj = elf_hash_table (info)->dynobj;
2989 BFD_ASSERT (dynobj != NULL);
2990
2991 if (elf_hash_table (info)->dynamic_sections_created)
2992 {
2993 /* Set the contents of the .interp section to the interpreter. */
2994 if (! info->shared)
2995 {
2996 s = bfd_get_section_by_name (dynobj, ".interp");
2997 BFD_ASSERT (s != NULL);
2998 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
2999 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3000 }
3001 }
3002 else
3003 {
3004 /* We may have created entries in the .rel.got section.
3005 However, if we are not creating the dynamic sections, we will
3006 not actually use these entries. Reset the size of .rel.got,
3007 which will cause it to get stripped from the output file
3008 below. */
3009 s = bfd_get_section_by_name (dynobj, ".rel.got");
3010 if (s != NULL)
3011 s->_raw_size = 0;
3012 }
3013
3014 /* If this is a -Bsymbolic shared link, then we need to discard all
3015 PC relative relocs against symbols defined in a regular object.
3016 We allocated space for them in the check_relocs routine, but we
3017 will not fill them in in the relocate_section routine. */
3018 if (info->shared && info->symbolic)
3019 elf32_arm_link_hash_traverse (elf32_arm_hash_table (info),
3020 elf32_arm_discard_copies,
3021 (PTR) NULL);
3022
3023 /* The check_relocs and adjust_dynamic_symbol entry points have
3024 determined the sizes of the various dynamic sections. Allocate
3025 memory for them. */
3026 plt = false;
3027 relocs = false;
252b5132
RH		 3028 for (s = dynobj->sections; s != NULL; s = s->next)
3029 {
3030 const char * name;
3031 boolean strip;
3032
3033 if ((s->flags & SEC_LINKER_CREATED) == 0)
3034 continue;
3035
3036 /* It's OK to base decisions on the section name, because none
3037 of the dynobj section names depend upon the input files. */
3038 name = bfd_get_section_name (dynobj, s);
3039
3040 strip = false;
3041
3042 if (strcmp (name, ".plt") == 0)
3043 {
3044 if (s->_raw_size == 0)
3045 {
3046 /* Strip this section if we don't need it; see the
3047 comment below. */
3048 strip = true;
3049 }
3050 else
3051 {
3052 /* Remember whether there is a PLT. */
3053 plt = true;
3054 }
3055 }
3056 else if (strncmp (name, ".rel", 4) == 0)
3057 {
3058 if (s->_raw_size == 0)
3059 {
3060 /* If we don't need this section, strip it from the
3061 output file. This is mostly to handle .rel.bss and
3062 .rel.plt. We must create both sections in
3063 create_dynamic_sections, because they must be created
3064 before the linker maps input sections to output
3065 sections. The linker does that before
3066 adjust_dynamic_symbol is called, and it is that
3067 function which decides whether anything needs to go
3068 into these sections. */
3069 strip = true;
3070 }
3071 else
3072 {
252b5132
RH		 3073 /* Remember whether there are any reloc sections other
3074 than .rel.plt. */
3075 if (strcmp (name, ".rel.plt") != 0)
99e4ae17 3076 relocs = true;
252b5132
RH		 3077
3078 /* We use the reloc_count field as a counter if we need
3079 to copy relocs into the output file. */
3080 s->reloc_count = 0;
3081 }
3082 }
3083 else if (strncmp (name, ".got", 4) != 0)
3084 {
3085 /* It's not one of our sections, so don't allocate space. */
3086 continue;
3087 }
3088
3089 if (strip)
3090 {
3091 asection ** spp;
3092
3093 for (spp = &s->output_section->owner->sections;
3094 *spp != s->output_section;
3095 spp = &(*spp)->next)
3096 ;
3097 *spp = s->output_section->next;
3098 --s->output_section->owner->section_count;
3099
3100 continue;
3101 }
3102
3103 /* Allocate memory for the section contents. */
3104 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
3105 if (s->contents == NULL && s->_raw_size != 0)
3106 return false;
3107 }
3108
3109 if (elf_hash_table (info)->dynamic_sections_created)
3110 {
3111 /* Add some entries to the .dynamic section. We fill in the
3112 values later, in elf32_arm_finish_dynamic_sections, but we
3113 must add the entries now so that we get the correct size for
3114 the .dynamic section. The DT_DEBUG entry is filled in by the
3115 dynamic linker and used by the debugger. */
dc810e39
AM		 3116#define add_dynamic_entry(TAG, VAL) \
3117 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
3118
3119 if (!info->shared)
252b5132 3120 {
dc810e39 3121 if (!add_dynamic_entry (DT_DEBUG, 0))
252b5132
RH		 3122 return false;
3123 }
3124
3125 if (plt)
3126 {
dc810e39
AM		 3127 if ( !add_dynamic_entry (DT_PLTGOT, 0)
3128 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3129 || !add_dynamic_entry (DT_PLTREL, DT_REL)
3130 || !add_dynamic_entry (DT_JMPREL, 0))
252b5132
RH		 3131 return false;
3132 }
3133
3134 if (relocs)
3135 {
dc810e39
AM		 3136 if ( !add_dynamic_entry (DT_REL, 0)
3137 || !add_dynamic_entry (DT_RELSZ, 0)
3138 || !add_dynamic_entry (DT_RELENT, sizeof (Elf32_External_Rel)))
252b5132
RH		 3139 return false;
3140 }
3141
99e4ae17 3142 if ((info->flags & DF_TEXTREL) != 0)
252b5132 3143 {
dc810e39 3144 if (!add_dynamic_entry (DT_TEXTREL, 0))
252b5132 3145 return false;
d6cf2879 3146 info->flags |= DF_TEXTREL;
252b5132
RH		 3147 }
3148 }
dc810e39 3149#undef add_synamic_entry
252b5132
RH		 3150
3151 return true;
3152}
3153
3154/* This function is called via elf32_arm_link_hash_traverse if we are
3155 creating a shared object with -Bsymbolic. It discards the space
3156 allocated to copy PC relative relocs against symbols which are
3157 defined in regular objects. We allocated space for them in the
3158 check_relocs routine, but we won't fill them in in the
3159 relocate_section routine. */
3160
3161static boolean
3162elf32_arm_discard_copies (h, ignore)
3163 struct elf32_arm_link_hash_entry * h;
5f771d47 3164 PTR ignore ATTRIBUTE_UNUSED;
252b5132
RH		 3165{
3166 struct elf32_arm_pcrel_relocs_copied * s;
3167
3168 /* We only discard relocs for symbols defined in a regular object. */
3169 if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3170 return true;
3171
3172 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3173 s->section->_raw_size -= s->count * sizeof (Elf32_External_Rel);
3174
3175 return true;
3176}
3177
3178/* Finish up dynamic symbol handling. We set the contents of various
3179 dynamic sections here. */
3180
3181static boolean
3182elf32_arm_finish_dynamic_symbol (output_bfd, info, h, sym)
3183 bfd * output_bfd;
3184 struct bfd_link_info * info;
3185 struct elf_link_hash_entry * h;
3186 Elf_Internal_Sym * sym;
3187{
3188 bfd * dynobj;
3189
3190 dynobj = elf_hash_table (info)->dynobj;
3191
3192 if (h->plt.offset != (bfd_vma) -1)
3193 {
3194 asection * splt;
3195 asection * sgot;
3196 asection * srel;
3197 bfd_vma plt_index;
3198 bfd_vma got_offset;
3199 Elf_Internal_Rel rel;
3200
3201 /* This symbol has an entry in the procedure linkage table. Set
3202 it up. */
3203
3204 BFD_ASSERT (h->dynindx != -1);
3205
3206 splt = bfd_get_section_by_name (dynobj, ".plt");
3207 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
3208 srel = bfd_get_section_by_name (dynobj, ".rel.plt");
3209 BFD_ASSERT (splt != NULL && sgot != NULL && srel != NULL);
3210
3211 /* Get the index in the procedure linkage table which
3212 corresponds to this symbol. This is the index of this symbol
3213 in all the symbols for which we are making plt entries. The
3214 first entry in the procedure linkage table is reserved. */
3215 plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1;
3216
3217 /* Get the offset into the .got table of the entry that
3218 corresponds to this function. Each .got entry is 4 bytes.
3219 The first three are reserved. */
3220 got_offset = (plt_index + 3) * 4;
3221
3222 /* Fill in the entry in the procedure linkage table. */
f7a74f8c
NC		 3223 bfd_put_32 (output_bfd, elf32_arm_plt_entry[0],
3224 splt->contents + h->plt.offset + 0);
3225 bfd_put_32 (output_bfd, elf32_arm_plt_entry[1],
3226 splt->contents + h->plt.offset + 4);
3227 bfd_put_32 (output_bfd, elf32_arm_plt_entry[2],
3228 splt->contents + h->plt.offset + 8);
252b5132
RH		 3229 bfd_put_32 (output_bfd,
3230 (sgot->output_section->vma
3231 + sgot->output_offset
f21f3fe0 3232 + got_offset
252b5132
RH		 3233 - splt->output_section->vma
3234 - splt->output_offset
3235 - h->plt.offset - 12),
3236 splt->contents + h->plt.offset + 12);
3237
3238 /* Fill in the entry in the global offset table. */
3239 bfd_put_32 (output_bfd,
3240 (splt->output_section->vma
3241 + splt->output_offset),
3242 sgot->contents + got_offset);
3243
3244 /* Fill in the entry in the .rel.plt section. */
3245 rel.r_offset = (sgot->output_section->vma
3246 + sgot->output_offset
3247 + got_offset);
3248 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_JUMP_SLOT);
3249 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3250 ((Elf32_External_Rel *) srel->contents
3251 + plt_index));
3252
3253 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3254 {
3255 /* Mark the symbol as undefined, rather than as defined in
3256 the .plt section. Leave the value alone. */
3257 sym->st_shndx = SHN_UNDEF;
d982ba73
PB		 3258 /* If the symbol is weak, we do need to clear the value.
3259 Otherwise, the PLT entry would provide a definition for
3260 the symbol even if the symbol wasn't defined anywhere,
3261 and so the symbol would never be NULL. */
3262 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
3263 == 0)
3264 sym->st_value = 0;
252b5132
RH		 3265 }
3266 }
3267
3268 if (h->got.offset != (bfd_vma) -1)
3269 {
3270 asection * sgot;
3271 asection * srel;
3272 Elf_Internal_Rel rel;
3273
3274 /* This symbol has an entry in the global offset table. Set it
3275 up. */
252b5132
RH		 3276 sgot = bfd_get_section_by_name (dynobj, ".got");
3277 srel = bfd_get_section_by_name (dynobj, ".rel.got");
3278 BFD_ASSERT (sgot != NULL && srel != NULL);
3279
3280 rel.r_offset = (sgot->output_section->vma
3281 + sgot->output_offset
dc810e39 3282 + (h->got.offset &~ (bfd_vma) 1));
252b5132
RH		 3283
3284 /* If this is a -Bsymbolic link, and the symbol is defined
3285 locally, we just want to emit a RELATIVE reloc. The entry in
3286 the global offset table will already have been initialized in
3287 the relocate_section function. */
3288 if (info->shared
3289 && (info->symbolic || h->dynindx == -1)
3290 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
3291 rel.r_info = ELF32_R_INFO (0, R_ARM_RELATIVE);
3292 else
3293 {
3294 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
3295 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_GLOB_DAT);
3296 }
3297
3298 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3299 ((Elf32_External_Rel *) srel->contents
3300 + srel->reloc_count));
3301 ++srel->reloc_count;
3302 }
3303
3304 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
3305 {
3306 asection * s;
3307 Elf_Internal_Rel rel;
3308
3309 /* This symbol needs a copy reloc. Set it up. */
252b5132
RH		 3310 BFD_ASSERT (h->dynindx != -1
3311 && (h->root.type == bfd_link_hash_defined
3312 || h->root.type == bfd_link_hash_defweak));
3313
3314 s = bfd_get_section_by_name (h->root.u.def.section->owner,
3315 ".rel.bss");
3316 BFD_ASSERT (s != NULL);
3317
3318 rel.r_offset = (h->root.u.def.value
3319 + h->root.u.def.section->output_section->vma
3320 + h->root.u.def.section->output_offset);
3321 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARM_COPY);
3322 bfd_elf32_swap_reloc_out (output_bfd, &rel,
3323 ((Elf32_External_Rel *) s->contents
3324 + s->reloc_count));
3325 ++s->reloc_count;
3326 }
3327
3328 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
3329 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
3330 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3331 sym->st_shndx = SHN_ABS;
3332
3333 return true;
3334}
3335
3336/* Finish up the dynamic sections. */
3337
3338static boolean
3339elf32_arm_finish_dynamic_sections (output_bfd, info)
3340 bfd * output_bfd;
3341 struct bfd_link_info * info;
3342{
3343 bfd * dynobj;
3344 asection * sgot;
3345 asection * sdyn;
3346
3347 dynobj = elf_hash_table (info)->dynobj;
3348
3349 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
3350 BFD_ASSERT (sgot != NULL);
3351 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
3352
3353 if (elf_hash_table (info)->dynamic_sections_created)
3354 {
3355 asection *splt;
3356 Elf32_External_Dyn *dyncon, *dynconend;
3357
3358 splt = bfd_get_section_by_name (dynobj, ".plt");
3359 BFD_ASSERT (splt != NULL && sdyn != NULL);
3360
3361 dyncon = (Elf32_External_Dyn *) sdyn->contents;
3362 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
9b485d32 3363
252b5132
RH		 3364 for (; dyncon < dynconend; dyncon++)
3365 {
3366 Elf_Internal_Dyn dyn;
3367 const char * name;
3368 asection * s;
3369
3370 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
3371
3372 switch (dyn.d_tag)
3373 {
3374 default:
3375 break;
3376
3377 case DT_PLTGOT:
3378 name = ".got";
3379 goto get_vma;
3380 case DT_JMPREL:
3381 name = ".rel.plt";
3382 get_vma:
3383 s = bfd_get_section_by_name (output_bfd, name);
3384 BFD_ASSERT (s != NULL);
3385 dyn.d_un.d_ptr = s->vma;
3386 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3387 break;
3388
3389 case DT_PLTRELSZ:
3390 s = bfd_get_section_by_name (output_bfd, ".rel.plt");
3391 BFD_ASSERT (s != NULL);
3392 if (s->_cooked_size != 0)
3393 dyn.d_un.d_val = s->_cooked_size;
3394 else
3395 dyn.d_un.d_val = s->_raw_size;
3396 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3397 break;
3398
3399 case DT_RELSZ:
3400 /* My reading of the SVR4 ABI indicates that the
3401 procedure linkage table relocs (DT_JMPREL) should be
3402 included in the overall relocs (DT_REL). This is
3403 what Solaris does. However, UnixWare can not handle
3404 that case. Therefore, we override the DT_RELSZ entry
3405 here to make it not include the JMPREL relocs. Since
3406 the linker script arranges for .rel.plt to follow all
3407 other relocation sections, we don't have to worry
3408 about changing the DT_REL entry. */
3409 s = bfd_get_section_by_name (output_bfd, ".rel.plt");
3410 if (s != NULL)
3411 {
3412 if (s->_cooked_size != 0)
3413 dyn.d_un.d_val -= s->_cooked_size;
3414 else
3415 dyn.d_un.d_val -= s->_raw_size;
3416 }
3417 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
3418 break;
3419 }
3420 }
3421
3422 /* Fill in the first entry in the procedure linkage table. */
3423 if (splt->_raw_size > 0)
f7a74f8c
NC		 3424 {
3425 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[0], splt->contents + 0);
3426 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[1], splt->contents + 4);
3427 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[2], splt->contents + 8);
3428 bfd_put_32 (output_bfd, elf32_arm_plt0_entry[3], splt->contents + 12);
3429 }
252b5132
RH		 3430
3431 /* UnixWare sets the entsize of .plt to 4, although that doesn't
3432 really seem like the right value. */
3433 elf_section_data (splt->output_section)->this_hdr.sh_entsize = 4;
3434 }
3435
3436 /* Fill in the first three entries in the global offset table. */
3437 if (sgot->_raw_size > 0)
3438 {
3439 if (sdyn == NULL)
3440 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
3441 else
3442 bfd_put_32 (output_bfd,
3443 sdyn->output_section->vma + sdyn->output_offset,
3444 sgot->contents);
3445 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
3446 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
3447 }
3448
3449 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
3450
3451 return true;
3452}
3453
ba96a88f
NC		 3454static void
3455elf32_arm_post_process_headers (abfd, link_info)
3456 bfd * abfd;
5f771d47 3457 struct bfd_link_info * link_info ATTRIBUTE_UNUSED;
ba96a88f 3458{
9b485d32 3459 Elf_Internal_Ehdr * i_ehdrp; /* ELF file header, internal form. */
ba96a88f
NC		 3460
3461 i_ehdrp = elf_elfheader (abfd);
3462
3463 i_ehdrp->e_ident[EI_OSABI] = ARM_ELF_OS_ABI_VERSION;
3464 i_ehdrp->e_ident[EI_ABIVERSION] = ARM_ELF_ABI_VERSION;
3465}
3466
99e4ae17 3467static enum elf_reloc_type_class
f51e552e
AM		 3468elf32_arm_reloc_type_class (rela)
3469 const Elf_Internal_Rela *rela;
99e4ae17 3470{
f51e552e 3471 switch ((int) ELF32_R_TYPE (rela->r_info))
99e4ae17
AJ		 3472 {
3473 case R_ARM_RELATIVE:
3474 return reloc_class_relative;
3475 case R_ARM_JUMP_SLOT:
3476 return reloc_class_plt;
3477 case R_ARM_COPY:
3478 return reloc_class_copy;
3479 default:
3480 return reloc_class_normal;
3481 }
3482}
3483
3484
252b5132
RH		 3485#define ELF_ARCH bfd_arch_arm
3486#define ELF_MACHINE_CODE EM_ARM
f21f3fe0 3487#define ELF_MAXPAGESIZE 0x8000
252b5132 3488
99e4ae17
AJ		 3489#define bfd_elf32_bfd_copy_private_bfd_data elf32_arm_copy_private_bfd_data
3490#define bfd_elf32_bfd_merge_private_bfd_data elf32_arm_merge_private_bfd_data
252b5132
RH		 3491#define bfd_elf32_bfd_set_private_flags elf32_arm_set_private_flags
3492#define bfd_elf32_bfd_print_private_bfd_data elf32_arm_print_private_bfd_data
3493#define bfd_elf32_bfd_link_hash_table_create elf32_arm_link_hash_table_create
dc810e39 3494#define bfd_elf32_bfd_reloc_type_lookup elf32_arm_reloc_type_lookup
252b5132
RH		 3495#define bfd_elf32_find_nearest_line elf32_arm_find_nearest_line
3496
3497#define elf_backend_get_symbol_type elf32_arm_get_symbol_type
3498#define elf_backend_gc_mark_hook elf32_arm_gc_mark_hook
3499#define elf_backend_gc_sweep_hook elf32_arm_gc_sweep_hook
3500#define elf_backend_check_relocs elf32_arm_check_relocs
dc810e39 3501#define elf_backend_relocate_section elf32_arm_relocate_section
252b5132
RH		 3502#define elf_backend_adjust_dynamic_symbol elf32_arm_adjust_dynamic_symbol
3503#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3504#define elf_backend_finish_dynamic_symbol elf32_arm_finish_dynamic_symbol
3505#define elf_backend_finish_dynamic_sections elf32_arm_finish_dynamic_sections
3506#define elf_backend_size_dynamic_sections elf32_arm_size_dynamic_sections
ba96a88f 3507#define elf_backend_post_process_headers elf32_arm_post_process_headers
99e4ae17 3508#define elf_backend_reloc_type_class elf32_arm_reloc_type_class
252b5132
RH		 3509
3510#define elf_backend_can_gc_sections 1
3511#define elf_backend_plt_readonly 1
3512#define elf_backend_want_got_plt 1
3513#define elf_backend_want_plt_sym 0
3514
04f7c78d
NC		 3515#define elf_backend_got_header_size 12
3516#define elf_backend_plt_header_size PLT_ENTRY_SIZE
3517
252b5132 3518#include "elf32-target.h"
GDB Binutils - Deliverables
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