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[ARC] Disable warning on absolute relocs when symbol is local.
[deliverable/binutils-gdb.git] / bfd / elf32-arc.c
CommitLineData
252b5132 1/* ARC-specific support for 32-bit ELF
2571583a 2 Copyright (C) 1994-2017 Free Software Foundation, Inc.
886a2506 3 Contributed by Cupertino Miranda (cmiranda@synopsys.com).
252b5132 4
0d2bcfaf 5 This file is part of BFD, the Binary File Descriptor library.
252b5132 6
0d2bcfaf
NC		 7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
cd123cb7 9 the Free Software Foundation; either version 3 of the License, or
0d2bcfaf 10 (at your option) any later version.
252b5132 11
0d2bcfaf
NC		 12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
252b5132 16
0d2bcfaf
NC		 17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
47b0e7ad
NC		 19 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
20 MA 02110-1301, USA. */
252b5132 21
252b5132 22#include "sysdep.h"
3db64b00 23#include "bfd.h"
252b5132
RH		 24#include "libbfd.h"
25#include "elf-bfd.h"
26#include "elf/arc.h"
ea04a8f6 27#include "libiberty.h"
886a2506 28#include "opcode/arc-func.h"
4b0c052e 29#include "opcode/arc.h"
34e967a5 30#include "arc-plt.h"
886a2506 31
53a346d8
CZ		 32#define FEATURE_LIST_NAME bfd_feature_list
33#define CONFLICT_LIST bfd_conflict_list
34#include "opcode/arc-attrs.h"
35
08759e0f 36/* #define ARC_ENABLE_DEBUG 1 */
f7e8b360
NC		 37#ifdef ARC_ENABLE_DEBUG
38static const char *
34e967a5
MC		 39name_for_global_symbol (struct elf_link_hash_entry *h)
40{
41 static char *local_str = "(local)";
42 if (h == NULL)
43 return local_str;
f7e8b360 44 return h->root.root.string;
34e967a5 45}
f7e8b360
NC		 46#define ARC_DEBUG(fmt, args...) fprintf (stderr, fmt, ##args)
47#else
48#define ARC_DEBUG(...)
34e967a5
MC		 49#endif
50
51
52#define ADD_RELA(BFD, SECTION, OFFSET, SYM_IDX, TYPE, ADDEND) \
53 { \
54 struct elf_link_hash_table *_htab = elf_hash_table (info); \
55 Elf_Internal_Rela _rel; \
23a42089 56 bfd_byte * _loc; \
34e967a5 57 \
be9e3704
CM		 58 if (_htab->dynamic_sections_created == TRUE) \
59 { \
60 BFD_ASSERT (_htab->srel##SECTION &&_htab->srel##SECTION->contents); \
61 _loc = _htab->srel##SECTION->contents \
62 + ((_htab->srel##SECTION->reloc_count) \
63 * sizeof (Elf32_External_Rela)); \
64 _htab->srel##SECTION->reloc_count++; \
65 _rel.r_addend = ADDEND; \
66 _rel.r_offset = (_htab->s##SECTION)->output_section->vma \
67 + (_htab->s##SECTION)->output_offset + OFFSET; \
68 BFD_ASSERT ((long) SYM_IDX != -1); \
69 _rel.r_info = ELF32_R_INFO (SYM_IDX, TYPE); \
70 bfd_elf32_swap_reloca_out (BFD, &_rel, _loc); \
71 } \
34e967a5 72 }
886a2506 73
34e967a5 74
886a2506
NC		 75/* The default symbols representing the init and fini dyn values.
76 TODO: Check what is the relation of those strings with arclinux.em
77 and DT_INIT. */
78#define INIT_SYM_STRING "_init"
79#define FINI_SYM_STRING "_fini"
80
81char * init_str = INIT_SYM_STRING;
82char * fini_str = FINI_SYM_STRING;
83
886a2506
NC		 84#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
85 case VALUE: \
b05a65d0 86 return "R_" #TYPE; \
886a2506
NC		 87 break;
88
89static ATTRIBUTE_UNUSED const char *
90reloc_type_to_name (unsigned int type)
91{
92 switch (type)
93 {
94 #include "elf/arc-reloc.def"
95
96 default:
97 return "UNKNOWN";
98 break;
99 }
100}
101#undef ARC_RELOC_HOWTO
252b5132 102
252b5132
RH		 103/* Try to minimize the amount of space occupied by relocation tables
104 on the ROM (not that the ROM won't be swamped by other ELF overhead). */
0d2bcfaf 105
886a2506
NC		 106#define USE_REL 1
107
108static ATTRIBUTE_UNUSED bfd_boolean
109is_reloc_PC_relative (reloc_howto_type *howto)
110{
111 return (strstr (howto->name, "PC") != NULL) ? TRUE : FALSE;
112}
113
114static bfd_boolean
115is_reloc_SDA_relative (reloc_howto_type *howto)
116{
117 return (strstr (howto->name, "SDA") != NULL) ? TRUE : FALSE;
118}
119
120static bfd_boolean
121is_reloc_for_GOT (reloc_howto_type * howto)
122{
34e967a5
MC		 123 if (strstr (howto->name, "TLS") != NULL)
124 return FALSE;
886a2506
NC		 125 return (strstr (howto->name, "GOT") != NULL) ? TRUE : FALSE;
126}
127
128static bfd_boolean
129is_reloc_for_PLT (reloc_howto_type * howto)
130{
131 return (strstr (howto->name, "PLT") != NULL) ? TRUE : FALSE;
132}
133
34e967a5
MC		 134static bfd_boolean
135is_reloc_for_TLS (reloc_howto_type *howto)
136{
137 return (strstr (howto->name, "TLS") != NULL) ? TRUE : FALSE;
138}
139
08759e0f
CM		 140struct arc_relocation_data
141{
142 bfd_signed_vma reloc_offset;
143 bfd_signed_vma reloc_addend;
144 bfd_signed_vma got_offset_value;
145
146 bfd_signed_vma sym_value;
147 asection * sym_section;
148
149 reloc_howto_type *howto;
150
151 asection * input_section;
152
153 bfd_signed_vma sdata_begin_symbol_vma;
154 bfd_boolean sdata_begin_symbol_vma_set;
155 bfd_signed_vma got_symbol_vma;
156
157 bfd_boolean should_relocate;
158
159 const char * symbol_name;
160};
161
162/* Should be included at this location due to static declarations
163 * defined before this point. */
164#include "arc-got.h"
165
886a2506
NC		 166#define arc_bfd_get_8(A,B,C) bfd_get_8(A,B)
167#define arc_bfd_get_16(A,B,C) bfd_get_16(A,B)
72f3b6aa 168#define arc_bfd_get_32(A,B,C) bfd_get_32(A,B)
886a2506
NC		 169#define arc_bfd_put_8(A,B,C,D) bfd_put_8(A,B,C)
170#define arc_bfd_put_16(A,B,C,D) bfd_put_16(A,B,C)
72f3b6aa 171#define arc_bfd_put_32(A,B,C,D) bfd_put_32(A,B,C)
886a2506 172
252b5132 173
47b0e7ad 174static bfd_reloc_status_type
886a2506
NC		 175arc_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED,
176 arelent *reloc_entry,
177 asymbol *symbol_in,
178 void *data ATTRIBUTE_UNUSED,
179 asection *input_section,
180 bfd *output_bfd,
181 char ** error_message ATTRIBUTE_UNUSED)
182{
183 if (output_bfd != NULL)
184 {
185 reloc_entry->address += input_section->output_offset;
186
187 /* In case of relocateable link and if the reloc is against a
188 section symbol, the addend needs to be adjusted according to
189 where the section symbol winds up in the output section. */
190 if ((symbol_in->flags & BSF_SECTION_SYM) && symbol_in->section)
191 reloc_entry->addend += symbol_in->section->output_offset;
192
193 return bfd_reloc_ok;
194 }
195
196 return bfd_reloc_continue;
197}
198
199
200#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
201 TYPE = VALUE,
202enum howto_list
203{
204#include "elf/arc-reloc.def"
205 HOWTO_LIST_LAST
206};
207#undef ARC_RELOC_HOWTO
208
209#define ARC_RELOC_HOWTO(TYPE, VALUE, RSIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
f7e8b360
NC		 210 [TYPE] = HOWTO (R_##TYPE, 0, RSIZE, BITSIZE, FALSE, 0, \
211 complain_overflow_##OVERFLOW, arc_elf_reloc, \
212 "R_" #TYPE, FALSE, 0, 0, FALSE),
886a2506
NC		 213
214static struct reloc_howto_struct elf_arc_howto_table[] =
215{
216#include "elf/arc-reloc.def"
34e967a5
MC		 217/* Example of what is generated by the preprocessor. Currently kept as an
218 example.
886a2506
NC		 219 HOWTO (R_ARC_NONE, // Type.
220 0, // Rightshift.
221 2, // Size (0 = byte, 1 = short, 2 = long).
222 32, // Bitsize.
223 FALSE, // PC_relative.
224 0, // Bitpos.
225 complain_overflow_bitfield, // Complain_on_overflow.
226 bfd_elf_generic_reloc, // Special_function.
227 "R_ARC_NONE", // Name.
228 TRUE, // Partial_inplace.
229 0, // Src_mask.
230 0, // Dst_mask.
231 FALSE), // PCrel_offset.
232*/
233};
234#undef ARC_RELOC_HOWTO
235
236static void arc_elf_howto_init (void)
237{
238#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
6f4b1afc 239 elf_arc_howto_table[TYPE].pc_relative = \
0a5ff21b 240 (strstr (#FORMULA, " P ") != NULL || strstr (#FORMULA, " PDATA ") != NULL); \
72f3b6aa
CZ		 241 elf_arc_howto_table[TYPE].dst_mask = RELOC_FUNCTION(0, ~0); \
242 /* Only 32 bit data relocations should be marked as ME. */ \
243 if (strstr (#FORMULA, " ME ") != NULL) \
244 { \
245 BFD_ASSERT (SIZE == 2); \
246 }
886a2506 247
34e967a5 248#include "elf/arc-reloc.def"
72f3b6aa 249
47b0e7ad 250}
886a2506 251#undef ARC_RELOC_HOWTO
47b0e7ad 252
886a2506
NC		 253
254#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
255 [TYPE] = VALUE,
256const int howto_table_lookup[] =
257{
34e967a5 258#include "elf/arc-reloc.def"
252b5132 259};
886a2506
NC		 260#undef ARC_RELOC_HOWTO
261
f26dd308
AM		 262static reloc_howto_type *
263arc_elf_howto (unsigned int r_type)
264{
265 if (elf_arc_howto_table[R_ARC_32].dst_mask == 0)
266 arc_elf_howto_init ();
267 return &elf_arc_howto_table[r_type];
268}
252b5132
RH		 269
270/* Map BFD reloc types to ARC ELF reloc types. */
271
272struct arc_reloc_map
273{
34e967a5 274 bfd_reloc_code_real_type bfd_reloc_val;
08759e0f 275 unsigned char elf_reloc_val;
252b5132
RH		 276};
277
8a36df4d
CM		 278/* ARC ELF linker hash entry. */
279struct elf_arc_link_hash_entry
280{
281 struct elf_link_hash_entry root;
282
283 /* Track dynamic relocs copied for this symbol. */
284 struct elf_dyn_relocs *dyn_relocs;
285};
286
287/* ARC ELF linker hash table. */
288struct elf_arc_link_hash_table
289{
290 struct elf_link_hash_table elf;
8a36df4d
CM		 291};
292
293static struct bfd_hash_entry *
294elf_arc_link_hash_newfunc (struct bfd_hash_entry *entry,
295 struct bfd_hash_table *table,
296 const char *string)
297{
298 /* Allocate the structure if it has not already been allocated by a
299 subclass. */
300 if (entry == NULL)
301 {
302 entry = (struct bfd_hash_entry *)
303 bfd_hash_allocate (table,
304 sizeof (struct elf_arc_link_hash_entry));
305 if (entry == NULL)
306 return entry;
307 }
308
309 /* Call the allocation method of the superclass. */
310 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
311 if (entry != NULL)
312 {
313 struct elf_arc_link_hash_entry *eh;
314
315 eh = (struct elf_arc_link_hash_entry *) entry;
316 eh->dyn_relocs = NULL;
317 }
318
319 return entry;
320}
321
322/* Destroy an ARC ELF linker hash table. */
323static void
324elf_arc_link_hash_table_free (bfd *obfd)
325{
326 _bfd_elf_link_hash_table_free (obfd);
327}
328
329/* Create an ARC ELF linker hash table. */
330
331static struct bfd_link_hash_table *
332arc_elf_link_hash_table_create (bfd *abfd)
333{
334 struct elf_arc_link_hash_table *ret;
335
336 ret = (struct elf_arc_link_hash_table *) bfd_zmalloc (sizeof (*ret));
337 if (ret == NULL)
338 return NULL;
339
340 if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
341 elf_arc_link_hash_newfunc,
342 sizeof (struct elf_arc_link_hash_entry),
343 ARC_ELF_DATA))
344 {
345 free (ret);
346 return NULL;
347 }
348
8a36df4d
CM		 349 ret->elf.init_got_refcount.refcount = 0;
350 ret->elf.init_got_refcount.glist = NULL;
351 ret->elf.init_got_offset.offset = 0;
352 ret->elf.init_got_offset.glist = NULL;
353
354 ret->elf.root.hash_table_free = elf_arc_link_hash_table_free;
355
356 return &ret->elf.root;
357}
358
886a2506
NC		 359#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
360 { BFD_RELOC_##TYPE, R_##TYPE },
252b5132
RH		 361static const struct arc_reloc_map arc_reloc_map[] =
362{
34e967a5
MC		 363#include "elf/arc-reloc.def"
364
886a2506
NC		 365 {BFD_RELOC_NONE, R_ARC_NONE},
366 {BFD_RELOC_8, R_ARC_8},
367 {BFD_RELOC_16, R_ARC_16},
368 {BFD_RELOC_24, R_ARC_24},
369 {BFD_RELOC_32, R_ARC_32},
252b5132 370};
886a2506 371#undef ARC_RELOC_HOWTO
252b5132 372
094fb063
CZ		 373typedef ATTRIBUTE_UNUSED bfd_vma (*replace_func) (unsigned, int ATTRIBUTE_UNUSED);
374
375#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
376 case TYPE: \
377 func = (void *) RELOC_FUNCTION; \
378 break;
379static replace_func
380get_replace_function (bfd *abfd, unsigned int r_type)
381{
382 void *func = NULL;
383
384 switch (r_type)
385 {
386 #include "elf/arc-reloc.def"
387 }
388
389 if (func == replace_bits24 && bfd_big_endian (abfd))
390 return (replace_func) replace_bits24_be;
391
392 return (replace_func) func;
393}
394#undef ARC_RELOC_HOWTO
395
252b5132 396static reloc_howto_type *
34e967a5 397arc_elf32_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
47b0e7ad 398 bfd_reloc_code_real_type code)
252b5132
RH		 399{
400 unsigned int i;
401
ea04a8f6 402 for (i = ARRAY_SIZE (arc_reloc_map); i--;)
886a2506
NC		 403 {
404 if (arc_reloc_map[i].bfd_reloc_val == code)
f26dd308 405 return arc_elf_howto (arc_reloc_map[i].elf_reloc_val);
886a2506 406 }
ea04a8f6 407
252b5132
RH		 408 return NULL;
409}
410
34e967a5
MC		 411/* Function to set the ELF flag bits. */
412static bfd_boolean
413arc_elf_set_private_flags (bfd *abfd, flagword flags)
414{
415 elf_elfheader (abfd)->e_flags = flags;
416 elf_flags_init (abfd) = TRUE;
417 return TRUE;
418}
419
420/* Print private flags. */
421static bfd_boolean
422arc_elf_print_private_bfd_data (bfd *abfd, void * ptr)
423{
424 FILE *file = (FILE *) ptr;
425 flagword flags;
426
427 BFD_ASSERT (abfd != NULL && ptr != NULL);
428
429 /* Print normal ELF private data. */
430 _bfd_elf_print_private_bfd_data (abfd, ptr);
431
432 flags = elf_elfheader (abfd)->e_flags;
433 fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);
434
435 switch (flags & EF_ARC_MACH_MSK)
436 {
34e967a5
MC		 437 case EF_ARC_CPU_ARCV2HS : fprintf (file, " -mcpu=ARCv2HS"); break;
438 case EF_ARC_CPU_ARCV2EM : fprintf (file, " -mcpu=ARCv2EM"); break;
439 case E_ARC_MACH_ARC600 : fprintf (file, " -mcpu=ARC600"); break;
440 case E_ARC_MACH_ARC601 : fprintf (file, " -mcpu=ARC601"); break;
441 case E_ARC_MACH_ARC700 : fprintf (file, " -mcpu=ARC700"); break;
442 default:
443 fprintf (file, "-mcpu=unknown");
444 break;
445 }
446
447 switch (flags & EF_ARC_OSABI_MSK)
448 {
449 case E_ARC_OSABI_ORIG : fprintf (file, " (ABI:legacy)"); break;
450 case E_ARC_OSABI_V2 : fprintf (file, " (ABI:v2)"); break;
451 case E_ARC_OSABI_V3 : fprintf (file, " (ABI:v3)"); break;
53a346d8 452 case E_ARC_OSABI_V4 : fprintf (file, " (ABI:v4)"); break;
34e967a5 453 default:
53a346d8 454 fprintf (file, " (ABI:unknown)");
34e967a5
MC		 455 break;
456 }
457
458 fputc ('\n', file);
459 return TRUE;
460}
461
462/* Copy backend specific data from one object module to another. */
463
464static bfd_boolean
465arc_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
466{
467 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
468 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
469 return TRUE;
470
471 BFD_ASSERT (!elf_flags_init (obfd)
472 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
473
474 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
475 elf_flags_init (obfd) = TRUE;
476
477 /* Copy object attributes. */
478 _bfd_elf_copy_obj_attributes (ibfd, obfd);
479
480 return _bfd_elf_copy_private_bfd_data (ibfd, obfd);
481}
482
157090f7 483static reloc_howto_type *
34e967a5
MC		 484bfd_elf32_bfd_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED,
485 const char *r_name)
157090f7
AM		 486{
487 unsigned int i;
488
886a2506 489 for (i = 0; i < ARRAY_SIZE (elf_arc_howto_table); i++)
157090f7
AM		 490 if (elf_arc_howto_table[i].name != NULL
491 && strcasecmp (elf_arc_howto_table[i].name, r_name) == 0)
f26dd308 492 return arc_elf_howto (i);
157090f7
AM		 493
494 return NULL;
495}
496
886a2506 497/* Set the howto pointer for an ARC ELF reloc. */
34e967a5 498
252b5132 499static void
886a2506
NC		 500arc_info_to_howto_rel (bfd * abfd ATTRIBUTE_UNUSED,
501 arelent * cache_ptr,
502 Elf_Internal_Rela * dst)
252b5132
RH		 503{
504 unsigned int r_type;
505
506 r_type = ELF32_R_TYPE (dst->r_info);
886a2506 507 BFD_ASSERT (r_type < (unsigned int) R_ARC_max);
f26dd308 508 cache_ptr->howto = arc_elf_howto (r_type);
252b5132
RH		 509}
510
53a346d8
CZ		 511/* Extract CPU features from an NTBS. */
512
513static unsigned
514arc_extract_features (const char *p)
515{
516 unsigned i, r = 0;
517
518 if (!p)
519 return 0;
520
521 for (i = 0; i < ARRAY_SIZE (bfd_feature_list); i++)
522 {
523 char *t = strstr (p, bfd_feature_list[i].attr);
524 unsigned l = strlen (bfd_feature_list[i].attr);
525 if ((t != NULL)
526 && (t[l] == ','
527 || t[l] == '\0'))
528 r |= bfd_feature_list[i].feature;
529 }
530
531 return r;
532}
533
534/* Concatenate two strings. s1 can be NULL but not
535 s2. */
536
537static char *
538arc_stralloc (char * s1, const char * s2)
539{
540 char *p;
541
542 /* Only s1 can be null. */
543 BFD_ASSERT (s2);
544
545 p = s1 ? concat (s1, ",", s2, NULL) : (char *)s2;
546
547 return p;
548}
549
550/* Merge ARC object attributes from IBFD into OBFD. Raise an error if
551 there are conflicting attributes. */
552
553static bfd_boolean
554arc_elf_merge_attributes (bfd *ibfd, struct bfd_link_info *info)
555{
556 bfd *obfd = info->output_bfd;
557 obj_attribute *in_attr;
558 obj_attribute *out_attr;
559 int i;
560 bfd_boolean result = TRUE;
561 const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section;
562 char *tagname = NULL;
563
564 /* Skip the linker stubs file. This preserves previous behavior
565 of accepting unknown attributes in the first input file - but
566 is that a bug? */
567 if (ibfd->flags & BFD_LINKER_CREATED)
568 return TRUE;
569
570 /* Skip any input that hasn't attribute section.
571 This enables to link object files without attribute section with
572 any others. */
573 if (bfd_get_section_by_name (ibfd, sec_name) == NULL)
574 return TRUE;
575
576 if (!elf_known_obj_attributes_proc (obfd)[0].i)
577 {
578 /* This is the first object. Copy the attributes. */
579 _bfd_elf_copy_obj_attributes (ibfd, obfd);
580
581 out_attr = elf_known_obj_attributes_proc (obfd);
582
583 /* Use the Tag_null value to indicate the attributes have been
584 initialized. */
585 out_attr[0].i = 1;
586
587 return TRUE;
588 }
589
590 in_attr = elf_known_obj_attributes_proc (ibfd);
591 out_attr = elf_known_obj_attributes_proc (obfd);
592
593 for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
594 {
595 /* Merge this attribute with existing attributes. */
596 switch (i)
597 {
598 case Tag_ARC_PCS_config:
599 if (out_attr[i].i == 0)
600 out_attr[i].i = in_attr[i].i;
601 else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i)
602 {
603 const char *tagval[] = { "Absent", "Bare-metal/mwdt",
604 "Bare-metal/newlib", "Linux/uclibc",
605 "Linux/glibc" };
606 BFD_ASSERT (in_attr[i].i < 5);
607 BFD_ASSERT (out_attr[i].i < 5);
608 /* It's sometimes ok to mix different configs, so this is only
609 a warning. */
610 _bfd_error_handler
611 (_("Warning: %B: Conflicting platform configuration "
612 "%s with %s.\n"), ibfd,
613 tagval[in_attr[i].i],
614 tagval[out_attr[i].i]);
615 }
616 break;
617
618 case Tag_ARC_CPU_base:
619 if (out_attr[i].i == 0)
620 out_attr[i].i = in_attr[i].i;
621 else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i
622 && ((out_attr[i].i + in_attr[i].i) < 6))
623 {
624 const char *tagval[] = { "Absent", "ARC6xx", "ARC7xx",
625 "ARCEM", "ARCHS" };
626 BFD_ASSERT (in_attr[i].i < 5);
627 BFD_ASSERT (out_attr[i].i < 5);
628 /* We cannot mix code for different CPUs. */
629 _bfd_error_handler
630 (_("error: %B: unable to merge CPU base attributes "
631 "%s with %s.\n"),
632 obfd,
633 tagval[in_attr[i].i],
634 tagval[out_attr[i].i]);
635 result = FALSE;
636 break;
637 }
638 else
639 {
640 /* The CPUs may be different, check if we can still mix
641 the objects against the output choosen CPU. */
642 unsigned in_feature = 0;
643 unsigned out_feature = 0;
644 char *p1 = in_attr[Tag_ARC_ISA_config].s;
645 char *p2 = out_attr[Tag_ARC_ISA_config].s;
646 unsigned j;
647 unsigned cpu_out;
648 unsigned opcode_map[] = {0, ARC_OPCODE_ARC600, ARC_OPCODE_ARC700,
649 ARC_OPCODE_ARCv2EM, ARC_OPCODE_ARCv2HS};
650
651 BFD_ASSERT (in_attr[i].i < (sizeof (opcode_map)
652 / sizeof (unsigned)));
653 BFD_ASSERT (out_attr[i].i < (sizeof (opcode_map)
654 / sizeof (unsigned)));
655 cpu_out = opcode_map[out_attr[i].i];
656
657 in_feature = arc_extract_features (p1);
658 out_feature = arc_extract_features (p2);
659
660 /* First, check if a feature is compatible with the
661 output object chosen CPU. */
662 for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++)
663 if (((in_feature | out_feature) & bfd_feature_list[j].feature)
664 && (!(cpu_out & bfd_feature_list[j].cpus)))
665 {
666 _bfd_error_handler
667 (_("error: %B: unable to merge ISA extension attributes "
668 "%s.\n"),
669 obfd, bfd_feature_list[j].name);
670 result = FALSE;
671 break;
672 }
673 /* Second, if we have compatible features with the
674 chosen CPU, check if they are compatible among
675 them. */
676 for (j = 0; j < ARRAY_SIZE (bfd_conflict_list); j++)
677 if (((in_feature | out_feature) & bfd_conflict_list[j])
678 == bfd_conflict_list[j])
679 {
680 unsigned k;
681 for (k = 0; k < ARRAY_SIZE (bfd_feature_list); k++)
682 {
683 if (in_feature & bfd_feature_list[k].feature
684 & bfd_conflict_list[j])
685 p1 = (char *) bfd_feature_list[k].name;
686 if (out_feature & bfd_feature_list[k].feature
687 & bfd_conflict_list[j])
688 p2 = (char *) bfd_feature_list[k].name;
689 }
690 _bfd_error_handler
691 (_("error: %B: conflicting ISA extension attributes "
692 "%s with %s.\n"),
693 obfd, p1, p2);
694 result = FALSE;
695 break;
696 }
697 /* Everithing is alright. */
698 out_feature |= in_feature;
699 p1 = NULL;
700 for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++)
701 if (out_feature & bfd_feature_list[j].feature)
702 p1 = arc_stralloc (p1, bfd_feature_list[j].attr);
703 if (p1)
704 out_attr[Tag_ARC_ISA_config].s =
705 _bfd_elf_attr_strdup (obfd, p1);
706 }
707 /* Fall through. */
708 case Tag_ARC_CPU_variation:
709 case Tag_ARC_ISA_mpy_option:
710 case Tag_ARC_ABI_osver:
711 /* Use the largest value specified. */
712 if (in_attr[i].i > out_attr[i].i)
713 out_attr[i].i = in_attr[i].i;
714 break;
715
716 case Tag_ARC_CPU_name:
717 break;
718
719 case Tag_ARC_ABI_rf16:
720 if (out_attr[i].i == 0)
721 out_attr[i].i = in_attr[i].i;
722 else if (out_attr[i].i != in_attr[i].i)
723 {
724 /* We cannot mix code with rf16 and without. */
725 _bfd_error_handler
726 (_("error: %B: cannot mix rf16 with full register set %B.\n"),
727 obfd, ibfd);
728 result = FALSE;
729 }
730 break;
731
732 case Tag_ARC_ABI_pic:
733 tagname = "PIC";
8e7f04f1 734 /* fall through */
53a346d8
CZ		 735 case Tag_ARC_ABI_sda:
736 if (!tagname)
737 tagname = "SDA";
8e7f04f1 738 /* fall through */
53a346d8
CZ		 739 case Tag_ARC_ABI_tls:
740 {
741 const char *tagval[] = { "Absent", "MWDT", "GNU" };
742
743 if (!tagname)
744 tagname = "TLS";
745
746 BFD_ASSERT (in_attr[i].i < 3);
747 BFD_ASSERT (out_attr[i].i < 3);
748 if (out_attr[i].i != 0 && in_attr[i].i != 0
749 && out_attr[i].i != in_attr[i].i)
750 {
751 _bfd_error_handler
752 (_("error: %B: conflicting attributes %s: %s with %s.\n"),
753 obfd, tagname,
754 tagval[in_attr[i].i],
755 tagval[out_attr[i].i]);
756 result = FALSE;
757 }
758 tagname = NULL;
759 break;
760 }
761
762 case Tag_ARC_ABI_double_size:
763 tagname = "Double size";
8e7f04f1 764 /* fall through */
53a346d8
CZ		 765 case Tag_ARC_ABI_enumsize:
766 if (!tagname)
767 tagname = "Enum size";
8e7f04f1 768 /* fall through */
53a346d8
CZ		 769 case Tag_ARC_ABI_exceptions:
770 if (!tagname)
771 tagname = "ABI exceptions";
772
773 if (out_attr[i].i != 0 && in_attr[i].i != 0
774 && out_attr[i].i != in_attr[i].i)
775 {
776 _bfd_error_handler
777 (_("error: %B: conflicting attributes %s.\n"),
778 obfd, tagname);
779 result = FALSE;
780 }
781 break;
782
783 case Tag_ARC_ISA_apex:
784 break; /* Do nothing for APEX attributes. */
785
786 case Tag_ARC_ISA_config:
787 /* It is handled in Tag_ARC_CPU_base. */
788 break;
789
790 default:
791 result
792 = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
793 }
794
795 /* If out_attr was copied from in_attr then it won't have a type yet. */
796 if (in_attr[i].type && !out_attr[i].type)
797 out_attr[i].type = in_attr[i].type;
798 }
799
800 /* Merge Tag_compatibility attributes and any common GNU ones. */
801 if (!_bfd_elf_merge_object_attributes (ibfd, info))
802 return FALSE;
803
804 /* Check for any attributes not known on ARC. */
805 result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
806
807 return result;
808}
809
34e967a5
MC		 810/* Merge backend specific data from an object file to the output
811 object file when linking. */
812
813static bfd_boolean
50e03d47 814arc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
34e967a5 815{
50e03d47 816 bfd *obfd = info->output_bfd;
34e967a5
MC		 817 unsigned short mach_ibfd;
818 static unsigned short mach_obfd = EM_NONE;
819 flagword out_flags;
820 flagword in_flags;
821 asection *sec;
822
823 /* Check if we have the same endianess. */
50e03d47 824 if (! _bfd_generic_verify_endian_match (ibfd, info))
1047201f 825 return FALSE;
34e967a5 826
53a346d8
CZ		 827 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
828 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
829 return TRUE;
830
34e967a5
MC		 831 /* Collect ELF flags. */
832 in_flags = elf_elfheader (ibfd)->e_flags & EF_ARC_MACH_MSK;
833 out_flags = elf_elfheader (obfd)->e_flags & EF_ARC_MACH_MSK;
834
835 if (!elf_flags_init (obfd)) /* First call, no flags set. */
836 {
837 elf_flags_init (obfd) = TRUE;
838 out_flags = in_flags;
839 }
840
53a346d8
CZ		 841 if (!arc_elf_merge_attributes (ibfd, info))
842 return FALSE;
34e967a5
MC		 843
844 /* Check to see if the input BFD actually contains any sections. Do
845 not short-circuit dynamic objects; their section list may be
846 emptied by elf_link_add_object_symbols. */
847 if (!(ibfd->flags & DYNAMIC))
848 {
849 bfd_boolean null_input_bfd = TRUE;
850 bfd_boolean only_data_sections = TRUE;
851
852 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
853 {
854 if ((bfd_get_section_flags (ibfd, sec)
855 & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
856 == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
857 only_data_sections = FALSE;
858
859 null_input_bfd = FALSE;
860 }
861
862 if (null_input_bfd || only_data_sections)
863 return TRUE;
864 }
865
866 /* Complain about various flag/architecture mismatches. */
867 mach_ibfd = elf_elfheader (ibfd)->e_machine;
868 if (mach_obfd == EM_NONE)
869 {
870 mach_obfd = mach_ibfd;
871 }
872 else
873 {
874 if (mach_ibfd != mach_obfd)
875 {
695344c0 876 /* xgettext:c-format */
34e967a5 877 _bfd_error_handler (_("ERROR: Attempting to link %B "
dae82561
AM		 878 "with a binary %B of different architecture"),
879 ibfd, obfd);
34e967a5
MC		 880 return FALSE;
881 }
53a346d8
CZ		 882 else if ((in_flags != out_flags)
883 /* If we have object attributes, then we already
884 checked the objects compatibility, skip it. */
885 && !bfd_elf_get_obj_attr_int (ibfd, OBJ_ATTR_PROC,
886 Tag_ARC_CPU_base))
34e967a5
MC		 887 {
888 /* Warn if different flags. */
4eca0228 889 _bfd_error_handler
695344c0 890 /* xgettext:c-format */
dae82561 891 (_("%B: uses different e_flags (0x%lx) fields than "
34e967a5 892 "previous modules (0x%lx)"),
dae82561 893 ibfd, (long) in_flags, (long) out_flags);
34e967a5
MC		 894 if (in_flags && out_flags)
895 return FALSE;
896 /* MWDT doesnt set the eflags hence make sure we choose the
897 eflags set by gcc. */
898 in_flags = in_flags > out_flags ? in_flags : out_flags;
899 }
53a346d8
CZ		 900 else
901 {
902 /* Everything is correct; don't change the output flags. */
903 in_flags = out_flags;
904 }
34e967a5
MC		 905 }
906
907 /* Update the flags. */
908 elf_elfheader (obfd)->e_flags = in_flags;
909
910 if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
911 {
912 return bfd_set_arch_mach (obfd, bfd_arch_arc, bfd_get_mach (ibfd));
913 }
914
915 return TRUE;
916}
917
53a346d8
CZ		 918/* Return a best guess for the machine number based on the attributes. */
919
920static unsigned int
921bfd_arc_get_mach_from_attributes (bfd * abfd)
922{
923 int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ARC_CPU_base);
924 unsigned e_machine = elf_elfheader (abfd)->e_machine;
925
926 switch (arch)
927 {
928 case TAG_CPU_ARC6xx:
929 return bfd_mach_arc_arc600;
930 case TAG_CPU_ARC7xx:
931 return bfd_mach_arc_arc700;
932 case TAG_CPU_ARCEM:
933 case TAG_CPU_ARCHS:
934 return bfd_mach_arc_arcv2;
935 default:
936 break;
937 }
938 return (e_machine == EM_ARC_COMPACT)
939 ? bfd_mach_arc_arc700 : bfd_mach_arc_arcv2;
940}
941
252b5132 942/* Set the right machine number for an ARC ELF file. */
b34976b6 943static bfd_boolean
886a2506 944arc_elf_object_p (bfd * abfd)
252b5132 945{
886a2506
NC		 946 /* Make sure this is initialised, or you'll have the potential of passing
947 garbage---or misleading values---into the call to
948 bfd_default_set_arch_mach (). */
53a346d8 949 unsigned int mach = bfd_mach_arc_arc700;
886a2506
NC		 950 unsigned long arch = elf_elfheader (abfd)->e_flags & EF_ARC_MACH_MSK;
951 unsigned e_machine = elf_elfheader (abfd)->e_machine;
252b5132 952
886a2506 953 if (e_machine == EM_ARC_COMPACT || e_machine == EM_ARC_COMPACT2)
252b5132 954 {
0d2bcfaf
NC		 955 switch (arch)
956 {
886a2506
NC		 957 case E_ARC_MACH_ARC600:
958 mach = bfd_mach_arc_arc600;
959 break;
960 case E_ARC_MACH_ARC601:
961 mach = bfd_mach_arc_arc601;
962 break;
963 case E_ARC_MACH_ARC700:
964 mach = bfd_mach_arc_arc700;
965 break;
966 case EF_ARC_CPU_ARCV2HS:
967 case EF_ARC_CPU_ARCV2EM:
968 mach = bfd_mach_arc_arcv2;
969 break;
970 default:
53a346d8 971 mach = bfd_arc_get_mach_from_attributes (abfd);
886a2506
NC		 972 break;
973 }
974 }
975 else
976 {
977 if (e_machine == EM_ARC)
978 {
4eca0228 979 _bfd_error_handler
886a2506
NC		 980 (_("Error: The ARC4 architecture is no longer supported.\n"));
981 return FALSE;
982 }
983 else
984 {
4eca0228 985 _bfd_error_handler
886a2506
NC		 986 (_("Warning: unset or old architecture flags. \n"
987 " Use default machine.\n"));
0d2bcfaf 988 }
252b5132 989 }
886a2506 990
0d2bcfaf 991 return bfd_default_set_arch_mach (abfd, bfd_arch_arc, mach);
252b5132
RH		 992}
993
994/* The final processing done just before writing out an ARC ELF object file.
995 This gets the ARC architecture right based on the machine number. */
996
997static void
34e967a5
MC		 998arc_elf_final_write_processing (bfd * abfd,
999 bfd_boolean linker ATTRIBUTE_UNUSED)
252b5132 1000{
886a2506 1001 unsigned long emf;
53a346d8
CZ		 1002 int osver = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC,
1003 Tag_ARC_ABI_osver);
1004 flagword e_flags = elf_elfheader (abfd)->e_flags & ~EF_ARC_OSABI_MSK;
252b5132 1005
0d2bcfaf 1006 switch (bfd_get_mach (abfd))
252b5132 1007 {
886a2506 1008 case bfd_mach_arc_arc600:
886a2506 1009 emf = EM_ARC_COMPACT;
0d2bcfaf 1010 break;
886a2506 1011 case bfd_mach_arc_arc601:
886a2506 1012 emf = EM_ARC_COMPACT;
0d2bcfaf 1013 break;
886a2506 1014 case bfd_mach_arc_arc700:
886a2506 1015 emf = EM_ARC_COMPACT;
0d2bcfaf 1016 break;
886a2506 1017 case bfd_mach_arc_arcv2:
886a2506 1018 emf = EM_ARC_COMPACT2;
0d2bcfaf 1019 break;
886a2506 1020 default:
53a346d8 1021 return;
252b5132 1022 }
34e967a5 1023
886a2506 1024 elf_elfheader (abfd)->e_machine = emf;
7e458899 1025
886a2506 1026 /* Record whatever is the current syscall ABI version. */
53a346d8
CZ		 1027 if (osver)
1028 e_flags |= ((osver & 0x0f) << 8);
1029 else
1030 e_flags |= E_ARC_OSABI_V3;
3c8adaca 1031
53a346d8 1032 elf_elfheader (abfd)->e_flags |= e_flags;
252b5132
RH		 1033}
1034
f7e8b360
NC		 1035#ifdef ARC_ENABLE_DEBUG
1036#define DEBUG_ARC_RELOC(A) debug_arc_reloc (A)
886a2506
NC		 1037
1038static void
1039debug_arc_reloc (struct arc_relocation_data reloc_data)
1040{
f7e8b360
NC		 1041 ARC_DEBUG ("Reloc type=%s, should_relocate = %s\n",
1042 reloc_data.howto->name,
1043 reloc_data.should_relocate ? "true" : "false");
1044 ARC_DEBUG (" offset = 0x%x, addend = 0x%x\n",
1045 (unsigned int) reloc_data.reloc_offset,
1046 (unsigned int) reloc_data.reloc_addend);
1047 ARC_DEBUG (" Symbol:\n");
1048 ARC_DEBUG (" value = 0x%08x\n",
1049 (unsigned int) reloc_data.sym_value);
886a2506
NC		 1050 if (reloc_data.sym_section != NULL)
1051 {
f7e8b360
NC		 1052 ARC_DEBUG (" Symbol Section:\n");
1053 ARC_DEBUG (" section name = %s, output_offset 0x%08x",
1054 reloc_data.sym_section->name,
1055 (unsigned int) reloc_data.sym_section->output_offset);
34e967a5 1056 if (reloc_data.sym_section->output_section != NULL)
f7e8b360 1057 ARC_DEBUG (", output_section->vma = 0x%08x",
34e967a5 1058 ((unsigned int) reloc_data.sym_section->output_section->vma));
f7e8b360
NC		 1059 ARC_DEBUG ("\n");
1060 if (reloc_data.sym_section->owner && reloc_data.sym_section->owner->filename)
1061 ARC_DEBUG (" file: %s\n", reloc_data.sym_section->owner->filename);
886a2506
NC		 1062 }
1063 else
34e967a5 1064 {
f7e8b360 1065 ARC_DEBUG (" symbol section is NULL\n");
34e967a5 1066 }
886a2506 1067
f7e8b360 1068 ARC_DEBUG (" Input_section:\n");
886a2506
NC		 1069 if (reloc_data.input_section != NULL)
1070 {
f7e8b360
NC		 1071 ARC_DEBUG (" section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n",
1072 reloc_data.input_section->name,
1073 (unsigned int) reloc_data.input_section->output_offset,
1074 (unsigned int) reloc_data.input_section->output_section->vma);
1075 ARC_DEBUG (" changed_address = 0x%08x\n",
1076 (unsigned int) (reloc_data.input_section->output_section->vma
1077 + reloc_data.input_section->output_offset
1078 + reloc_data.reloc_offset));
1079 ARC_DEBUG (" file: %s\n", reloc_data.input_section->owner->filename);
886a2506
NC		 1080 }
1081 else
34e967a5 1082 {
f7e8b360 1083 ARC_DEBUG (" input section is NULL\n");
34e967a5 1084 }
886a2506 1085}
f7e8b360
NC		 1086#else
1087#define DEBUG_ARC_RELOC(A)
1088#endif /* ARC_ENABLE_DEBUG */
886a2506 1089
72f3b6aa
CZ		 1090static bfd_vma
1091middle_endian_convert (bfd_vma insn, bfd_boolean do_it)
6f4b1afc 1092{
72f3b6aa
CZ		 1093 if (do_it)
1094 {
08759e0f
CM		 1095 insn
1096 = ((insn & 0xffff0000) >> 16)
1097 | ((insn & 0xffff) << 16);
72f3b6aa
CZ		 1098 }
1099 return insn;
6f4b1afc
CM		 1100}
1101
4b0c052e
AB		 1102/* This function is called for relocations that are otherwise marked as NOT
1103 requiring overflow checks. In here we perform non-standard checks of
1104 the relocation value. */
1105
1106static inline bfd_reloc_status_type
1107arc_special_overflow_checks (const struct arc_relocation_data reloc_data,
08759e0f 1108 bfd_signed_vma relocation,
4b0c052e
AB		 1109 struct bfd_link_info *info ATTRIBUTE_UNUSED)
1110{
1111 switch (reloc_data.howto->type)
1112 {
1113 case R_ARC_NPS_CMEM16:
1114 if (((relocation >> 16) & 0xffff) != NPS_CMEM_HIGH_VALUE)
08759e0f
CM		 1115 {
1116 if (reloc_data.reloc_addend == 0)
4eca0228 1117 _bfd_error_handler
695344c0 1118 /* xgettext:c-format */
08759e0f
CM		 1119 (_("%B(%A+0x%lx): CMEM relocation to `%s' is invalid, "
1120 "16 MSB should be 0x%04x (value is 0x%lx)"),
1121 reloc_data.input_section->owner,
1122 reloc_data.input_section,
1123 reloc_data.reloc_offset,
1124 reloc_data.symbol_name,
1125 NPS_CMEM_HIGH_VALUE,
1126 (relocation));
1127 else
4eca0228 1128 _bfd_error_handler
695344c0 1129 /* xgettext:c-format */
08759e0f
CM		 1130 (_("%B(%A+0x%lx): CMEM relocation to `%s+0x%lx' is invalid, "
1131 "16 MSB should be 0x%04x (value is 0x%lx)"),
1132 reloc_data.input_section->owner,
1133 reloc_data.input_section,
1134 reloc_data.reloc_offset,
1135 reloc_data.symbol_name,
1136 reloc_data.reloc_addend,
1137 NPS_CMEM_HIGH_VALUE,
1138 (relocation));
1139 return bfd_reloc_overflow;
1140 }
4b0c052e
AB		 1141 break;
1142
1143 default:
1144 break;
1145 }
1146
1147 return bfd_reloc_ok;
1148}
1149
72f3b6aa
CZ		 1150#define ME(reloc) (reloc)
1151
1152#define IS_ME(FORMULA,BFD) ((strstr (FORMULA, "ME") != NULL) \
1153 && (!bfd_big_endian (BFD)))
1154
094fb063 1155#define S ((bfd_signed_vma) (reloc_data.sym_value \
34e967a5
MC		 1156 + (reloc_data.sym_section->output_section != NULL ? \
1157 (reloc_data.sym_section->output_offset \
094fb063
CZ		 1158 + reloc_data.sym_section->output_section->vma) : 0)))
1159#define L ((bfd_signed_vma) (reloc_data.sym_value \
34e967a5
MC		 1160 + (reloc_data.sym_section->output_section != NULL ? \
1161 (reloc_data.sym_section->output_offset \
094fb063 1162 + reloc_data.sym_section->output_section->vma) : 0)))
886a2506
NC		 1163#define A (reloc_data.reloc_addend)
1164#define B (0)
1165#define G (reloc_data.got_offset_value)
34e967a5
MC		 1166#define GOT (reloc_data.got_symbol_vma)
1167#define GOT_BEGIN (htab->sgot->output_section->vma)
1168
886a2506 1169#define MES (0)
34e967a5
MC		 1170 /* P: relative offset to PCL The offset should be to the
1171 current location aligned to 32 bits. */
094fb063 1172#define P ((bfd_signed_vma) ( \
34e967a5
MC		 1173 ( \
1174 (reloc_data.input_section->output_section != NULL ? \
1175 reloc_data.input_section->output_section->vma : 0) \
1176 + reloc_data.input_section->output_offset \
094fb063
CZ		 1177 + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0))) \
1178 & ~0x3))
1179#define PDATA ((bfd_signed_vma) ( \
6f4b1afc
CM		 1180 (reloc_data.input_section->output_section->vma \
1181 + reloc_data.input_section->output_offset \
094fb063 1182 + (reloc_data.reloc_offset))))
2ab2f40d
CM		 1183#define SECTSTART (bfd_signed_vma) (reloc_data.sym_section->output_section->vma \
1184 + reloc_data.sym_section->output_offset)
1185
094fb063
CZ		 1186#define _SDA_BASE_ (bfd_signed_vma) (reloc_data.sdata_begin_symbol_vma)
1187#define TLS_REL (bfd_signed_vma) \
1188 ((elf_hash_table (info))->tls_sec->output_section->vma)
34e967a5
MC		 1189#define TLS_TBSS (8)
1190#define TCB_SIZE (8)
1191
886a2506
NC		 1192#define none (0)
1193
f7e8b360
NC		 1194#ifdef ARC_ENABLE_DEBUG
1195#define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA, TYPE) \
1196 do \
1197 { \
1198 asection *sym_section = reloc_data.sym_section; \
1199 asection *input_section = reloc_data.input_section; \
1200 ARC_DEBUG ("RELOC_TYPE = " TYPE "\n"); \
1201 ARC_DEBUG ("FORMULA = " FORMULA "\n"); \
1202 ARC_DEBUG ("S = %#lx\n", S); \
1203 ARC_DEBUG ("A = %#lx\n", A); \
1204 ARC_DEBUG ("L = %lx\n", L); \
1205 if (sym_section->output_section != NULL) \
1206 ARC_DEBUG ("symbol_section->vma = %#lx\n", \
1207 sym_section->output_section->vma \
1208 + sym_section->output_offset); \
1209 else \
1210 ARC_DEBUG ("symbol_section->vma = NULL\n"); \
1211 if (input_section->output_section != NULL) \
1212 ARC_DEBUG ("symbol_section->vma = %#lx\n", \
1213 input_section->output_section->vma \
1214 + input_section->output_offset); \
1215 else \
1216 ARC_DEBUG ("symbol_section->vma = NULL\n"); \
1217 ARC_DEBUG ("PCL = %#lx\n", P); \
1218 ARC_DEBUG ("P = %#lx\n", P); \
1219 ARC_DEBUG ("G = %#lx\n", G); \
1220 ARC_DEBUG ("SDA_OFFSET = %#lx\n", _SDA_BASE_); \
34e967a5 1221 ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \
f7e8b360
NC		 1222 ARC_DEBUG ("GOT_OFFSET = %#lx\n", GOT); \
1223 ARC_DEBUG ("relocation = %#08lx\n", relocation); \
1224 ARC_DEBUG ("before = %#08x\n", (unsigned) insn); \
1225 ARC_DEBUG ("data = %08x (%u) (%d)\n", (unsigned) relocation, \
1226 (unsigned) relocation, (int) relocation); \
1227 } \
1228 while (0)
1229
1230#define PRINT_DEBUG_RELOC_INFO_AFTER \
1231 do \
1232 { \
1233 ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \
1234 } \
1235 while (0)
34e967a5 1236
f7e8b360
NC		 1237#else
1238
1239#define PRINT_DEBUG_RELOC_INFO_BEFORE(...)
1240#define PRINT_DEBUG_RELOC_INFO_AFTER
1241
1242#endif /* ARC_ENABLE_DEBUG */
34e967a5 1243
886a2506 1244#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
f7e8b360
NC		 1245 case R_##TYPE: \
1246 { \
1247 bfd_signed_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \
1248 relocation = FORMULA ; \
1249 PRINT_DEBUG_RELOC_INFO_BEFORE (#FORMULA, #TYPE); \
1250 insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \
1251 insn = (* get_replace_function (abfd, TYPE)) (insn, relocation); \
1252 insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \
1253 PRINT_DEBUG_RELOC_INFO_AFTER; \
1254 } \
886a2506
NC		 1255 break;
1256
1257static bfd_reloc_status_type
34e967a5
MC		 1258arc_do_relocation (bfd_byte * contents,
1259 struct arc_relocation_data reloc_data,
1260 struct bfd_link_info *info)
886a2506 1261{
094fb063 1262 bfd_signed_vma relocation = 0;
886a2506
NC		 1263 bfd_vma insn;
1264 bfd_vma orig_insn ATTRIBUTE_UNUSED;
72f3b6aa 1265 bfd * abfd = reloc_data.input_section->owner;
34e967a5 1266 struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info);
4b0c052e 1267 bfd_reloc_status_type flag;
886a2506 1268
535b785f 1269 if (!reloc_data.should_relocate)
34e967a5 1270 return bfd_reloc_ok;
886a2506
NC		 1271
1272 switch (reloc_data.howto->size)
1273 {
1274 case 2:
72f3b6aa 1275 insn = arc_bfd_get_32 (abfd,
886a2506
NC		 1276 contents + reloc_data.reloc_offset,
1277 reloc_data.input_section);
1278 break;
1279 case 1:
72f3b6aa
CZ		 1280 insn = arc_bfd_get_16 (abfd,
1281 contents + reloc_data.reloc_offset,
1282 reloc_data.input_section);
1283 break;
886a2506 1284 case 0:
72f3b6aa 1285 insn = arc_bfd_get_8 (abfd,
886a2506
NC		 1286 contents + reloc_data.reloc_offset,
1287 reloc_data.input_section);
1288 break;
1289 default:
1290 insn = 0;
1291 BFD_ASSERT (0);
1292 break;
1293 }
1294
1295 orig_insn = insn;
1296
1297 switch (reloc_data.howto->type)
1298 {
34e967a5 1299#include "elf/arc-reloc.def"
886a2506
NC		 1300
1301 default:
1302 BFD_ASSERT (0);
1303 break;
1304 }
1305
1306 /* Check for relocation overflow. */
1307 if (reloc_data.howto->complain_on_overflow != complain_overflow_dont)
4b0c052e 1308 flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow,
08759e0f
CM		 1309 reloc_data.howto->bitsize,
1310 reloc_data.howto->rightshift,
1311 bfd_arch_bits_per_address (abfd),
1312 relocation);
4b0c052e
AB		 1313 else
1314 flag = arc_special_overflow_checks (reloc_data, relocation, info);
886a2506 1315
4b0c052e
AB		 1316 if (flag != bfd_reloc_ok)
1317 {
f7e8b360 1318 ARC_DEBUG ("Relocation overflows !\n");
4b0c052e 1319 DEBUG_ARC_RELOC (reloc_data);
f7e8b360
NC		 1320 ARC_DEBUG ("Relocation value = signed -> %d, unsigned -> %u"
1321 ", hex -> (0x%08x)\n",
1322 (int) relocation, (unsigned) relocation, (int) relocation);
886a2506 1323
4b0c052e 1324 return flag;
886a2506 1325 }
886a2506 1326
4b0c052e 1327 /* Write updated instruction back to memory. */
886a2506
NC		 1328 switch (reloc_data.howto->size)
1329 {
1330 case 2:
72f3b6aa 1331 arc_bfd_put_32 (abfd, insn,
886a2506
NC		 1332 contents + reloc_data.reloc_offset,
1333 reloc_data.input_section);
1334 break;
1335 case 1:
72f3b6aa
CZ		 1336 arc_bfd_put_16 (abfd, insn,
1337 contents + reloc_data.reloc_offset,
1338 reloc_data.input_section);
1339 break;
886a2506 1340 case 0:
72f3b6aa 1341 arc_bfd_put_8 (abfd, insn,
886a2506
NC		 1342 contents + reloc_data.reloc_offset,
1343 reloc_data.input_section);
1344 break;
1345 default:
1346 ARC_DEBUG ("size = %d\n", reloc_data.howto->size);
1347 BFD_ASSERT (0);
1348 break;
1349 }
1350
1351 return bfd_reloc_ok;
1352}
1353#undef S
1354#undef A
1355#undef B
1356#undef G
1357#undef GOT
1358#undef L
1359#undef MES
1360#undef P
1361#undef SECTSTAR
1362#undef SECTSTART
1363#undef _SDA_BASE_
1364#undef none
1365
1366#undef ARC_RELOC_HOWTO
1367
886a2506 1368
886a2506
NC		 1369/* Relocate an arc ELF section.
1370 Function : elf_arc_relocate_section
1371 Brief : Relocate an arc section, by handling all the relocations
34e967a5 1372 appearing in that section.
886a2506 1373 Args : output_bfd : The bfd being written to.
34e967a5
MC		 1374 info : Link information.
1375 input_bfd : The input bfd.
1376 input_section : The section being relocated.
1377 contents : contents of the section being relocated.
1378 relocs : List of relocations in the section.
1379 local_syms : is a pointer to the swapped in local symbols.
1380 local_section : is an array giving the section in the input file
1381 corresponding to the st_shndx field of each
1382 local symbol. */
886a2506 1383static bfd_boolean
f7e8b360 1384elf_arc_relocate_section (bfd * output_bfd,
886a2506 1385 struct bfd_link_info * info,
f7e8b360
NC		 1386 bfd * input_bfd,
1387 asection * input_section,
1388 bfd_byte * contents,
886a2506
NC		 1389 Elf_Internal_Rela * relocs,
1390 Elf_Internal_Sym * local_syms,
f7e8b360 1391 asection ** local_sections)
886a2506 1392{
f7e8b360
NC		 1393 Elf_Internal_Shdr * symtab_hdr;
1394 struct elf_link_hash_entry ** sym_hashes;
1395 Elf_Internal_Rela * rel;
1396 Elf_Internal_Rela * wrel;
1397 Elf_Internal_Rela * relend;
1398 struct elf_link_hash_table * htab = elf_hash_table (info);
886a2506
NC		 1399
1400 symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr);
1401 sym_hashes = elf_sym_hashes (input_bfd);
1402
3c8adaca 1403 rel = wrel = relocs;
886a2506 1404 relend = relocs + input_section->reloc_count;
3c8adaca 1405 for (; rel < relend; wrel++, rel++)
886a2506
NC		 1406 {
1407 enum elf_arc_reloc_type r_type;
34e967a5 1408 reloc_howto_type * howto;
f7e8b360 1409 unsigned long r_symndx;
886a2506 1410 struct elf_link_hash_entry * h;
34e967a5
MC		 1411 Elf_Internal_Sym * sym;
1412 asection * sec;
f7e8b360
NC		 1413 struct elf_link_hash_entry * h2;
1414 const char * msg;
886a2506
NC		 1415
1416 struct arc_relocation_data reloc_data =
1417 {
34e967a5
MC		 1418 .reloc_offset = 0,
1419 .reloc_addend = 0,
1420 .got_offset_value = 0,
1421 .sym_value = 0,
1422 .sym_section = NULL,
1423 .howto = NULL,
1424 .input_section = NULL,
1425 .sdata_begin_symbol_vma = 0,
1426 .sdata_begin_symbol_vma_set = FALSE,
1427 .got_symbol_vma = 0,
1428 .should_relocate = FALSE
886a2506
NC		 1429 };
1430
34e967a5
MC		 1431 r_type = ELF32_R_TYPE (rel->r_info);
1432
1433 if (r_type >= (int) R_ARC_max)
1434 {
1435 bfd_set_error (bfd_error_bad_value);
1436 return FALSE;
1437 }
3c8adaca 1438 howto = arc_elf_howto (r_type);
34e967a5
MC		 1439
1440 r_symndx = ELF32_R_SYM (rel->r_info);
1441
1442 /* If we are generating another .o file and the symbol in not
1443 local, skip this relocation. */
1444 if (bfd_link_relocatable (info))
1445 {
1446 /* This is a relocateable link. We don't have to change
1447 anything, unless the reloc is against a section symbol,
1448 in which case we have to adjust according to where the
1449 section symbol winds up in the output section. */
1450
1451 /* Checks if this is a local symbol and thus the reloc
1452 might (will??) be against a section symbol. */
1453 if (r_symndx < symtab_hdr->sh_info)
1454 {
1455 sym = local_syms + r_symndx;
1456 if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1457 {
1458 sec = local_sections[r_symndx];
1459
f7e8b360 1460 /* For RELA relocs. Just adjust the addend
34e967a5
MC		 1461 value in the relocation entry. */
1462 rel->r_addend += sec->output_offset + sym->st_value;
1463
f7e8b360
NC		 1464 ARC_DEBUG ("local symbols reloc (section=%d %s) seen in %s\n",
1465 (int) r_symndx, local_sections[r_symndx]->name,
1466 __PRETTY_FUNCTION__);
34e967a5
MC		 1467 }
1468 }
34e967a5 1469 }
886a2506
NC		 1470
1471 h2 = elf_link_hash_lookup (elf_hash_table (info), "__SDATA_BEGIN__",
1472 FALSE, FALSE, TRUE);
1473
535b785f
AM		 1474 if (!reloc_data.sdata_begin_symbol_vma_set
1475 && h2 != NULL && h2->root.type != bfd_link_hash_undefined
1476 && h2->root.u.def.section->output_section != NULL)
34e967a5 1477 /* TODO: Verify this condition. */
886a2506
NC		 1478 {
1479 reloc_data.sdata_begin_symbol_vma =
08759e0f
CM		 1480 (h2->root.u.def.value
1481 + h2->root.u.def.section->output_section->vma);
886a2506
NC		 1482 reloc_data.sdata_begin_symbol_vma_set = TRUE;
1483 }
1484
886a2506
NC		 1485 reloc_data.input_section = input_section;
1486 reloc_data.howto = howto;
1487 reloc_data.reloc_offset = rel->r_offset;
1488 reloc_data.reloc_addend = rel->r_addend;
1489
886a2506
NC		 1490 /* This is a final link. */
1491 h = NULL;
1492 sym = NULL;
1493 sec = NULL;
1494
1495 if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */
1496 {
1497 sym = local_syms + r_symndx;
1498 sec = local_sections[r_symndx];
3c8adaca
CZ		 1499 }
1500 else
1501 {
1502 /* TODO: This code is repeated from below. We should
1503 clean it and remove duplications.
1504 Sec is used check for discarded sections.
1505 Need to redesign code below. */
1506
1507 /* Get the symbol's entry in the symtab. */
1508 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1509
1510 while (h->root.type == bfd_link_hash_indirect
1511 || h->root.type == bfd_link_hash_warning)
1512 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1513
1514 /* If we have encountered a definition for this symbol. */
1515 if (h->root.type == bfd_link_hash_defined
1516 || h->root.type == bfd_link_hash_defweak)
1517 {
1518 reloc_data.sym_value = h->root.u.def.value;
1519 sec = h->root.u.def.section;
1520 }
1521 }
1522
1523 /* Clean relocs for symbols in discarded sections. */
1524 if (sec != NULL && discarded_section (sec))
1525 {
1526 _bfd_clear_contents (howto, input_bfd, input_section,
1527 contents + rel->r_offset);
1528 rel->r_offset = rel->r_offset;
1529 rel->r_info = 0;
1530 rel->r_addend = 0;
1531
1532 /* For ld -r, remove relocations in debug sections against
1533 sections defined in discarded sections. Not done for
1534 eh_frame editing code expects to be present. */
1535 if (bfd_link_relocatable (info)
1536 && (input_section->flags & SEC_DEBUGGING))
1537 wrel--;
1538
1539 continue;
1540 }
1541
1542 if (bfd_link_relocatable (info))
1543 {
1544 if (wrel != rel)
1545 *wrel = *rel;
1546 continue;
1547 }
1548
1549 if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */
1550 {
886a2506
NC		 1551 reloc_data.sym_value = sym->st_value;
1552 reloc_data.sym_section = sec;
4b0c052e 1553 reloc_data.symbol_name =
3c8adaca
CZ		 1554 bfd_elf_string_from_elf_section (input_bfd,
1555 symtab_hdr->sh_link,
1556 sym->st_name);
886a2506 1557
841fdfcd
CZ		 1558 /* Mergeable section handling. */
1559 if ((sec->flags & SEC_MERGE)
1560 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1561 {
1562 asection *msec;
1563 msec = sec;
1564 rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym,
1565 &msec, rel->r_addend);
1566 rel->r_addend -= (sec->output_section->vma
1567 + sec->output_offset
1568 + sym->st_value);
1569 rel->r_addend += msec->output_section->vma + msec->output_offset;
1570
1571 reloc_data.reloc_addend = rel->r_addend;
1572 }
1573
34e967a5
MC		 1574 BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
1575 if (htab->sgot != NULL)
1576 reloc_data.got_symbol_vma = htab->sgot->output_section->vma
1577 + htab->sgot->output_offset;
886a2506
NC		 1578
1579 reloc_data.should_relocate = TRUE;
1580 }
1581 else /* Global symbol. */
1582 {
f7e8b360
NC		 1583 /* FIXME: We should use the RELOC_FOR_GLOBAL_SYMBOL macro
1584 (defined in elf-bfd.h) here. */
1585
886a2506
NC		 1586 /* Get the symbol's entry in the symtab. */
1587 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1588
1589 while (h->root.type == bfd_link_hash_indirect
1590 || h->root.type == bfd_link_hash_warning)
1591 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1592
3c8adaca
CZ		 1593 /* TODO: Need to validate what was the intention. */
1594 /* BFD_ASSERT ((h->dynindx == -1) || (h->forced_local != 0)); */
4b0c052e 1595 reloc_data.symbol_name = h->root.root.string;
3c8adaca 1596
886a2506
NC		 1597 /* If we have encountered a definition for this symbol. */
1598 if (h->root.type == bfd_link_hash_defined
1599 || h->root.type == bfd_link_hash_defweak)
1600 {
1601 reloc_data.sym_value = h->root.u.def.value;
1602 reloc_data.sym_section = h->root.u.def.section;
1603
1604 reloc_data.should_relocate = TRUE;
1605
34e967a5 1606 if (is_reloc_for_GOT (howto) && !bfd_link_pic (info))
886a2506 1607 {
34e967a5
MC		 1608 /* TODO: Change it to use arc_do_relocation with
1609 ARC_32 reloc. Try to use ADD_RELA macro. */
886a2506
NC		 1610 bfd_vma relocation =
1611 reloc_data.sym_value + reloc_data.reloc_addend
34e967a5
MC		 1612 + (reloc_data.sym_section->output_section != NULL ?
1613 (reloc_data.sym_section->output_offset
1614 + reloc_data.sym_section->output_section->vma)
1615 : 0);
1616
1617 BFD_ASSERT (h->got.glist);
1618 bfd_vma got_offset = h->got.glist->offset;
1619 bfd_put_32 (output_bfd, relocation,
1620 htab->sgot->contents + got_offset);
1621 }
1622 if (is_reloc_for_PLT (howto) && h->plt.offset != (bfd_vma) -1)
1623 {
1624 /* TODO: This is repeated up here. */
1625 reloc_data.sym_value = h->plt.offset;
1626 reloc_data.sym_section = htab->splt;
886a2506
NC		 1627 }
1628 }
1629 else if (h->root.type == bfd_link_hash_undefweak)
1630 {
1631 /* Is weak symbol and has no definition. */
34e967a5
MC		 1632 if (is_reloc_for_GOT (howto))
1633 {
1634 reloc_data.sym_value = h->root.u.def.value;
1635 reloc_data.sym_section = htab->sgot;
1636 reloc_data.should_relocate = TRUE;
1637 }
1638 else if (is_reloc_for_PLT (howto)
1639 && h->plt.offset != (bfd_vma) -1)
1640 {
1641 /* TODO: This is repeated up here. */
1642 reloc_data.sym_value = h->plt.offset;
1643 reloc_data.sym_section = htab->splt;
1644 reloc_data.should_relocate = TRUE;
1645 }
1646 else
1647 continue;
886a2506
NC		 1648 }
1649 else
1650 {
1651 if (is_reloc_for_GOT (howto))
1652 {
886a2506 1653 reloc_data.sym_value = h->root.u.def.value;
34e967a5 1654 reloc_data.sym_section = htab->sgot;
886a2506
NC		 1655
1656 reloc_data.should_relocate = TRUE;
1657 }
1658 else if (is_reloc_for_PLT (howto))
1659 {
7e458899
CZ		 1660 /* Fail if it is linking for PIE and the symbol is
1661 undefined. */
1a72702b
AM		 1662 if (bfd_link_executable (info))
1663 (*info->callbacks->undefined_symbol)
1664 (info, h->root.root.string, input_bfd, input_section,
1665 rel->r_offset, TRUE);
886a2506 1666 reloc_data.sym_value = h->plt.offset;
34e967a5 1667 reloc_data.sym_section = htab->splt;
886a2506
NC		 1668
1669 reloc_data.should_relocate = TRUE;
1670 }
8a36df4d 1671 else if (!bfd_link_pic (info) || bfd_link_executable (info))
1a72702b
AM		 1672 (*info->callbacks->undefined_symbol)
1673 (info, h->root.root.string, input_bfd, input_section,
1674 rel->r_offset, TRUE);
886a2506
NC		 1675 }
1676
34e967a5
MC		 1677 BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
1678 if (htab->sgot != NULL)
1679 reloc_data.got_symbol_vma = htab->sgot->output_section->vma
1680 + htab->sgot->output_offset;
886a2506
NC		 1681 }
1682
08759e0f
CM		 1683 if ((is_reloc_for_GOT (howto)
1684 || is_reloc_for_TLS (howto)))
1685 {
980aa3e6
CM		 1686 reloc_data.should_relocate = TRUE;
1687
08759e0f
CM		 1688 struct got_entry **list
1689 = get_got_entry_list_for_symbol (output_bfd, r_symndx, h);
1690
1691 reloc_data.got_offset_value
1692 = relocate_fix_got_relocs_for_got_info (list,
1693 tls_type_for_reloc (howto),
1694 info,
1695 output_bfd,
1696 r_symndx,
1697 local_syms,
1698 local_sections,
1699 h,
1700 &reloc_data);
1701
1702 if (h == NULL)
1703 {
1704 create_got_dynrelocs_for_single_entry (
1705 got_entry_for_type (list,
1706 arc_got_entry_type_for_reloc (howto)),
1707 output_bfd, info, NULL);
1708 }
1709 }
f7e8b360 1710
34e967a5
MC		 1711 switch (r_type)
1712 {
1713 case R_ARC_32:
1714 case R_ARC_32_ME:
1715 case R_ARC_PC32:
1716 case R_ARC_32_PCREL:
8a36df4d 1717 if ((bfd_link_pic (info))
34e967a5
MC		 1718 && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
1719 || (h != NULL
1720 && h->dynindx != -1
1721 && (!info->symbolic || !h->def_regular))))
1722 {
1723 Elf_Internal_Rela outrel;
1724 bfd_byte *loc;
1725 bfd_boolean skip = FALSE;
1726 bfd_boolean relocate = FALSE;
1727 asection *sreloc = _bfd_elf_get_dynamic_reloc_section
1728 (input_bfd, input_section,
1729 /*RELA*/ TRUE);
1730
1731 BFD_ASSERT (sreloc != NULL);
1732
1733 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1734 info,
1735 input_section,
1736 rel->r_offset);
1737 if (outrel.r_offset == (bfd_vma) -1)
1738 skip = TRUE;
1739
1740 outrel.r_addend = rel->r_addend;
1741 outrel.r_offset += (input_section->output_section->vma
1742 + input_section->output_offset);
1743
3c8adaca 1744#define IS_ARC_PCREL_TYPE(TYPE) \
f7e8b360 1745 ( (TYPE == R_ARC_PC32) \
3c8adaca 1746 || (TYPE == R_ARC_32_PCREL))
f7e8b360 1747
34e967a5
MC		 1748 if (skip)
1749 {
1750 memset (&outrel, 0, sizeof outrel);
1751 relocate = FALSE;
1752 }
3c8adaca
CZ		 1753 else if (h != NULL
1754 && h->dynindx != -1
1755 && ((IS_ARC_PCREL_TYPE (r_type))
1756 || !(bfd_link_executable (info)
1757 || SYMBOLIC_BIND (info, h))
1758 || ! h->def_regular))
34e967a5 1759 {
94e5c971 1760 BFD_ASSERT (h != NULL);
34e967a5
MC		 1761 if ((input_section->flags & SEC_ALLOC) != 0)
1762 relocate = FALSE;
1763 else
1764 relocate = TRUE;
94e5c971
CZ		 1765
1766 BFD_ASSERT (h->dynindx != -1);
34e967a5
MC		 1767 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1768 }
1769 else
1770 {
1771 /* Handle local symbols, they either do not have a
1772 global hash table entry (h == NULL), or are
1773 forced local due to a version script
1774 (h->forced_local), or the third condition is
1775 legacy, it appears to say something like, for
1776 links where we are pre-binding the symbols, or
1777 there's not an entry for this symbol in the
1778 dynamic symbol table, and it's a regular symbol
1779 not defined in a shared object, then treat the
1780 symbol as local, resolve it now. */
3c8adaca
CZ		 1781 relocate = TRUE;
1782 /* outrel.r_addend = 0; */
1783 outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE);
34e967a5
MC		 1784 }
1785
1786 BFD_ASSERT (sreloc->contents != 0);
1787
1788 loc = sreloc->contents;
1789 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
1790 sreloc->reloc_count += 1;
1791
1792 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1793
535b785f 1794 if (!relocate)
34e967a5
MC		 1795 continue;
1796 }
1797 break;
1798 default:
1799 break;
1800 }
1801
1802 if (is_reloc_SDA_relative (howto)
535b785f 1803 && !reloc_data.sdata_begin_symbol_vma_set)
886a2506 1804 {
4eca0228
AM		 1805 _bfd_error_handler
1806 ("Error: Linker symbol __SDATA_BEGIN__ not found");
886a2506
NC		 1807 bfd_set_error (bfd_error_bad_value);
1808 return FALSE;
1809 }
1810
1811 DEBUG_ARC_RELOC (reloc_data);
34e967a5 1812
2ab2f40d 1813 /* Make sure we have with a dynamic linker. In case of GOT and PLT
08759e0f 1814 the sym_section should point to .got or .plt respectively. */
815dc1bc
CZ		 1815 if ((is_reloc_for_GOT (howto) || is_reloc_for_PLT (howto))
1816 && reloc_data.sym_section == NULL)
2ab2f40d 1817 {
4eca0228 1818 _bfd_error_handler
2ab2f40d
CM		 1819 (_("GOT and PLT relocations cannot be fixed with a non dynamic linker."));
1820 bfd_set_error (bfd_error_bad_value);
1821 return FALSE;
1822 }
1823
f7e8b360
NC		 1824 msg = NULL;
1825 switch (arc_do_relocation (contents, reloc_data, info))
1826 {
1827 case bfd_reloc_ok:
1828 continue; /* The reloc processing loop. */
1829
1830 case bfd_reloc_overflow:
1831 (*info->callbacks->reloc_overflow)
1832 (info, (h ? &h->root : NULL), reloc_data.symbol_name, howto->name, (bfd_vma) 0,
1833 input_bfd, input_section, rel->r_offset);
1834 break;
1835
1836 case bfd_reloc_undefined:
1837 (*info->callbacks->undefined_symbol)
1838 (info, reloc_data.symbol_name, input_bfd, input_section, rel->r_offset, TRUE);
1839 break;
1840
1841 case bfd_reloc_other:
695344c0 1842 /* xgettext:c-format */
f7e8b360
NC		 1843 msg = _("%B(%A): warning: unaligned access to symbol '%s' in the small data area");
1844 break;
1845
1846 case bfd_reloc_outofrange:
695344c0 1847 /* xgettext:c-format */
f7e8b360
NC		 1848 msg = _("%B(%A): internal error: out of range error");
1849 break;
1850
1851 case bfd_reloc_notsupported:
695344c0 1852 /* xgettext:c-format */
f7e8b360
NC		 1853 msg = _("%B(%A): internal error: unsupported relocation error");
1854 break;
1855
1856 case bfd_reloc_dangerous:
695344c0 1857 /* xgettext:c-format */
f7e8b360
NC		 1858 msg = _("%B(%A): internal error: dangerous relocation");
1859 break;
1860
1861 default:
695344c0 1862 /* xgettext:c-format */
f7e8b360
NC		 1863 msg = _("%B(%A): internal error: unknown error");
1864 break;
1865 }
1866
1867 if (msg)
1868 _bfd_error_handler (msg, input_bfd, input_section, reloc_data.symbol_name);
1869 return FALSE;
886a2506
NC		 1870 }
1871
1872 return TRUE;
1873}
1874
8a36df4d
CM		 1875#define elf_arc_hash_table(p) \
1876 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1877 == ARC_ELF_DATA ? ((struct elf_arc_link_hash_table *) ((p)->hash)) : NULL)
1878
886a2506 1879static bfd_boolean
08759e0f 1880elf_arc_check_relocs (bfd * abfd,
886a2506 1881 struct bfd_link_info * info,
34e967a5 1882 asection * sec,
886a2506
NC		 1883 const Elf_Internal_Rela * relocs)
1884{
34e967a5
MC		 1885 Elf_Internal_Shdr * symtab_hdr;
1886 struct elf_link_hash_entry ** sym_hashes;
34e967a5
MC		 1887 const Elf_Internal_Rela * rel;
1888 const Elf_Internal_Rela * rel_end;
1889 bfd * dynobj;
1890 asection * sreloc = NULL;
34e967a5
MC		 1891
1892 if (bfd_link_relocatable (info))
1893 return TRUE;
886a2506
NC		 1894
1895 dynobj = (elf_hash_table (info))->dynobj;
1896 symtab_hdr = &((elf_tdata (abfd))->symtab_hdr);
1897 sym_hashes = elf_sym_hashes (abfd);
886a2506
NC		 1898
1899 rel_end = relocs + sec->reloc_count;
1900 for (rel = relocs; rel < rel_end; rel++)
1901 {
1902 enum elf_arc_reloc_type r_type;
1903 reloc_howto_type *howto;
1904 unsigned long r_symndx;
1905 struct elf_link_hash_entry *h;
1906
1907 r_type = ELF32_R_TYPE (rel->r_info);
1908
1909 if (r_type >= (int) R_ARC_max)
1910 {
1911 bfd_set_error (bfd_error_bad_value);
1912 return FALSE;
1913 }
3c8adaca 1914 howto = arc_elf_howto (r_type);
34e967a5
MC		 1915
1916 if (dynobj == NULL
535b785f
AM		 1917 && (is_reloc_for_GOT (howto)
1918 || is_reloc_for_TLS (howto)))
34e967a5
MC		 1919 {
1920 dynobj = elf_hash_table (info)->dynobj = abfd;
1921 if (! _bfd_elf_create_got_section (abfd, info))
1922 return FALSE;
1923 }
886a2506
NC		 1924
1925 /* Load symbol information. */
1926 r_symndx = ELF32_R_SYM (rel->r_info);
1927 if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */
1928 h = NULL;
1929 else /* Global one. */
1930 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1931
34e967a5
MC		 1932 switch (r_type)
1933 {
1934 case R_ARC_32:
1935 case R_ARC_32_ME:
1936 /* During shared library creation, these relocs should not
1937 appear in a shared library (as memory will be read only
1938 and the dynamic linker can not resolve these. However
1939 the error should not occur for e.g. debugging or
1940 non-readonly sections. */
9d5c718b
CM		 1941 if (h != NULL
1942 && (bfd_link_dll (info) && !bfd_link_pie (info))
34e967a5 1943 && (sec->flags & SEC_ALLOC) != 0
3c8adaca
CZ		 1944 && (sec->flags & SEC_READONLY) != 0
1945 && ((sec->flags & SEC_CODE) != 0
1946 || (sec->flags & SEC_DEBUGGING) != 0))
34e967a5
MC		 1947 {
1948 const char *name;
1949 if (h)
1950 name = h->root.root.string;
1951 else
1952 /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */
1953 name = "UNKNOWN";
4eca0228 1954 _bfd_error_handler
695344c0 1955 /* xgettext:c-format */
34e967a5
MC		 1956 (_("\
1957%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
1958 abfd,
1959 arc_elf_howto (r_type)->name,
1960 name);
1961 bfd_set_error (bfd_error_bad_value);
1962 return FALSE;
1963 }
1964
1965 /* In some cases we are not setting the 'non_got_ref'
1966 flag, even though the relocations don't require a GOT
1967 access. We should extend the testing in this area to
1968 ensure that no significant cases are being missed. */
1969 if (h)
1970 h->non_got_ref = 1;
1971 /* FALLTHROUGH */
1972 case R_ARC_PC32:
1973 case R_ARC_32_PCREL:
8a36df4d 1974 if ((bfd_link_pic (info))
34e967a5
MC		 1975 && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
1976 || (h != NULL
34e967a5
MC		 1977 && (!info->symbolic || !h->def_regular))))
1978 {
1979 if (sreloc == NULL)
1980 {
1981 sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
1982 2, abfd,
1983 /*rela*/
1984 TRUE);
1985
1986 if (sreloc == NULL)
1987 return FALSE;
1988 }
1989 sreloc->size += sizeof (Elf32_External_Rela);
1990
1991 }
1992 default:
1993 break;
1994 }
1995
535b785f 1996 if (is_reloc_for_PLT (howto))
886a2506
NC		 1997 {
1998 if (h == NULL)
1999 continue;
2000 else
2001 h->needs_plt = 1;
2002 }
2003
08759e0f 2004 /* Add info to the symbol got_entry_list. */
535b785f
AM		 2005 if (is_reloc_for_GOT (howto)
2006 || is_reloc_for_TLS (howto))
34e967a5 2007 {
08759e0f
CM		 2008 arc_fill_got_info_for_reloc (
2009 arc_got_entry_type_for_reloc (howto),
2010 get_got_entry_list_for_symbol (abfd, r_symndx, h),
2011 info,
2012 h);
34e967a5
MC		 2013 }
2014 }
886a2506 2015
34e967a5
MC		 2016 return TRUE;
2017}
886a2506 2018
34e967a5 2019#define ELF_DYNAMIC_INTERPRETER "/sbin/ld-uClibc.so"
886a2506 2020
34e967a5
MC		 2021static struct plt_version_t *
2022arc_get_plt_version (struct bfd_link_info *info)
886a2506 2023{
34e967a5 2024 int i;
886a2506 2025
34e967a5
MC		 2026 for (i = 0; i < 1; i++)
2027 {
2028 ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i,
f7e8b360
NC		 2029 (int) plt_versions[i].entry_size,
2030 (int) plt_versions[i].elem_size);
34e967a5 2031 }
886a2506 2032
34e967a5 2033 if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2)
886a2506 2034 {
34e967a5
MC		 2035 if (bfd_link_pic (info))
2036 return &(plt_versions[ELF_ARCV2_PIC]);
2037 else
2038 return &(plt_versions[ELF_ARCV2_ABS]);
2039 }
2040 else
886a2506 2041 {
34e967a5
MC		 2042 if (bfd_link_pic (info))
2043 return &(plt_versions[ELF_ARC_PIC]);
2044 else
2045 return &(plt_versions[ELF_ARC_ABS]);
886a2506 2046 }
886a2506
NC		 2047}
2048
2049static bfd_vma
2050add_symbol_to_plt (struct bfd_link_info *info)
2051{
34e967a5 2052 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506
NC		 2053 bfd_vma ret;
2054
34e967a5 2055 struct plt_version_t *plt_data = arc_get_plt_version (info);
886a2506 2056
34e967a5
MC		 2057 /* If this is the first .plt entry, make room for the special first
2058 entry. */
2059 if (htab->splt->size == 0)
2060 htab->splt->size += plt_data->entry_size;
886a2506 2061
34e967a5
MC		 2062 ret = htab->splt->size;
2063
2064 htab->splt->size += plt_data->elem_size;
f7e8b360 2065 ARC_DEBUG ("PLT_SIZE = %d\n", (int) htab->splt->size);
34e967a5
MC		 2066
2067 htab->sgotplt->size += 4;
2068 htab->srelplt->size += sizeof (Elf32_External_Rela);
886a2506
NC		 2069
2070 return ret;
2071}
2072
34e967a5
MC		 2073#define PLT_DO_RELOCS_FOR_ENTRY(ABFD, DS, RELOCS) \
2074 plt_do_relocs_for_symbol (ABFD, DS, RELOCS, 0, 0)
886a2506
NC		 2075
2076static void
34e967a5
MC		 2077plt_do_relocs_for_symbol (bfd *abfd,
2078 struct elf_link_hash_table *htab,
2079 const struct plt_reloc *reloc,
886a2506
NC		 2080 bfd_vma plt_offset,
2081 bfd_vma symbol_got_offset)
2082{
2083 while (SYM_ONLY (reloc->symbol) != LAST_RELOC)
2084 {
2085 bfd_vma relocation = 0;
2086
2087 switch (SYM_ONLY (reloc->symbol))
2088 {
2089 case SGOT:
08759e0f
CM		 2090 relocation
2091 = htab->sgotplt->output_section->vma
2092 + htab->sgotplt->output_offset + symbol_got_offset;
886a2506
NC		 2093 break;
2094 }
2095 relocation += reloc->addend;
2096
34e967a5
MC		 2097 if (IS_RELATIVE (reloc->symbol))
2098 {
2099 bfd_vma reloc_offset = reloc->offset;
2100 reloc_offset -= (IS_INSN_32 (reloc->symbol)) ? 4 : 0;
2101 reloc_offset -= (IS_INSN_24 (reloc->symbol)) ? 2 : 0;
886a2506 2102
34e967a5
MC		 2103 relocation -= htab->splt->output_section->vma
2104 + htab->splt->output_offset
2105 + plt_offset + reloc_offset;
2106 }
2107
2108 /* TODO: being ME is not a property of the relocation but of the
2109 section of which is applying the relocation. */
1e5885b7 2110 if (IS_MIDDLE_ENDIAN (reloc->symbol) && !bfd_big_endian (abfd))
886a2506 2111 {
08759e0f
CM		 2112 relocation
2113 = ((relocation & 0xffff0000) >> 16)
2114 | ((relocation & 0xffff) << 16);
886a2506
NC		 2115 }
2116
2117 switch (reloc->size)
2118 {
2119 case 32:
34e967a5 2120 bfd_put_32 (htab->splt->output_section->owner,
886a2506 2121 relocation,
34e967a5 2122 htab->splt->contents + plt_offset + reloc->offset);
886a2506
NC		 2123 break;
2124 }
2125
34e967a5 2126 reloc = &(reloc[1]); /* Jump to next relocation. */
886a2506
NC		 2127 }
2128}
2129
2130static void
34e967a5
MC		 2131relocate_plt_for_symbol (bfd *output_bfd,
2132 struct bfd_link_info *info,
886a2506
NC		 2133 struct elf_link_hash_entry *h)
2134{
34e967a5
MC		 2135 struct plt_version_t *plt_data = arc_get_plt_version (info);
2136 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2137
34e967a5
MC		 2138 bfd_vma plt_index = (h->plt.offset - plt_data->entry_size)
2139 / plt_data->elem_size;
886a2506
NC		 2140 bfd_vma got_offset = (plt_index + 3) * 4;
2141
f7e8b360
NC		 2142 ARC_DEBUG ("arc_info: PLT_OFFSET = %#lx, PLT_ENTRY_VMA = %#lx, \
2143GOT_ENTRY_OFFSET = %#lx, GOT_ENTRY_VMA = %#lx, for symbol %s\n",
2144 (long) h->plt.offset,
2145 (long) (htab->splt->output_section->vma
2146 + htab->splt->output_offset
2147 + h->plt.offset),
2148 (long) got_offset,
2149 (long) (htab->sgotplt->output_section->vma
2150 + htab->sgotplt->output_offset
2151 + got_offset),
34e967a5
MC		 2152 h->root.root.string);
2153
1e5885b7
CZ		 2154 {
2155 bfd_vma i = 0;
2156 uint16_t *ptr = (uint16_t *) plt_data->elem;
f7e8b360 2157
1e5885b7
CZ		 2158 for (i = 0; i < plt_data->elem_size/2; i++)
2159 {
2160 uint16_t data = ptr[i];
2161 bfd_put_16 (output_bfd,
2162 (bfd_vma) data,
2163 htab->splt->contents + h->plt.offset + (i*2));
2164 }
2165 }
2166
34e967a5
MC		 2167 plt_do_relocs_for_symbol (output_bfd, htab,
2168 plt_data->elem_relocs,
2169 h->plt.offset,
886a2506 2170 got_offset);
34e967a5
MC		 2171
2172 /* Fill in the entry in the global offset table. */
2173 bfd_put_32 (output_bfd,
2174 (bfd_vma) (htab->splt->output_section->vma
2175 + htab->splt->output_offset),
2176 htab->sgotplt->contents + got_offset);
2177
2178 /* TODO: Fill in the entry in the .rela.plt section. */
2179 {
2180 Elf_Internal_Rela rel;
2181 bfd_byte *loc;
2182
2183 rel.r_offset = (htab->sgotplt->output_section->vma
2184 + htab->sgotplt->output_offset
2185 + got_offset);
2186 rel.r_addend = 0;
94e5c971
CZ		 2187
2188 BFD_ASSERT (h->dynindx != -1);
34e967a5
MC		 2189 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT);
2190
2191 loc = htab->srelplt->contents;
2192 loc += plt_index * sizeof (Elf32_External_Rela); /* relA */
2193 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
2194 }
886a2506
NC		 2195}
2196
2197static void
34e967a5
MC		 2198relocate_plt_for_entry (bfd *abfd,
2199 struct bfd_link_info *info)
886a2506 2200{
34e967a5
MC		 2201 struct plt_version_t *plt_data = arc_get_plt_version (info);
2202 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2203
1e5885b7
CZ		 2204 {
2205 bfd_vma i = 0;
2206 uint16_t *ptr = (uint16_t *) plt_data->entry;
2207 for (i = 0; i < plt_data->entry_size/2; i++)
2208 {
2209 uint16_t data = ptr[i];
2210 bfd_put_16 (abfd,
2211 (bfd_vma) data,
2212 htab->splt->contents + (i*2));
2213 }
2214 }
34e967a5 2215 PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs);
886a2506
NC		 2216}
2217
34e967a5
MC		 2218/* Desc : Adjust a symbol defined by a dynamic object and referenced
2219 by a regular object. The current definition is in some section of
2220 the dynamic object, but we're not including those sections. We
2221 have to change the definition to something the rest of the link can
886a2506
NC		 2222 understand. */
2223
2224static bfd_boolean
2225elf_arc_adjust_dynamic_symbol (struct bfd_link_info *info,
2226 struct elf_link_hash_entry *h)
2227{
34e967a5 2228 asection *s;
886a2506 2229 bfd *dynobj = (elf_hash_table (info))->dynobj;
34e967a5 2230 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2231
34e967a5
MC		 2232 if (h->type == STT_FUNC
2233 || h->type == STT_GNU_IFUNC
2234 || h->needs_plt == 1)
886a2506
NC		 2235 {
2236 if (!bfd_link_pic (info) && !h->def_dynamic && !h->ref_dynamic)
2237 {
2238 /* This case can occur if we saw a PLT32 reloc in an input
2239 file, but the symbol was never referred to by a dynamic
2240 object. In such a case, we don't actually need to build
2241 a procedure linkage table, and we can just do a PC32
2242 reloc instead. */
2243 BFD_ASSERT (h->needs_plt);
2244 return TRUE;
2245 }
2246
2247 /* Make sure this symbol is output as a dynamic symbol. */
2248 if (h->dynindx == -1 && !h->forced_local
2249 && !bfd_elf_link_record_dynamic_symbol (info, h))
2250 return FALSE;
2251
34e967a5
MC		 2252 if (bfd_link_pic (info)
2253 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
886a2506
NC		 2254 {
2255 bfd_vma loc = add_symbol_to_plt (info);
2256
08759e0f 2257 if (bfd_link_executable (info) && !h->def_regular)
886a2506 2258 {
34e967a5 2259 h->root.u.def.section = htab->splt;
886a2506
NC		 2260 h->root.u.def.value = loc;
2261 }
2262 h->plt.offset = loc;
2263 }
34e967a5
MC		 2264 else
2265 {
2266 h->plt.offset = (bfd_vma) -1;
2267 h->needs_plt = 0;
2268 }
2269 return TRUE;
886a2506 2270 }
34e967a5
MC		 2271
2272 /* If this is a weak symbol, and there is a real definition, the
2273 processor independent code will have arranged for us to see the
2274 real definition first, and we can just use the same value. */
2275 if (h->u.weakdef != NULL)
886a2506 2276 {
34e967a5
MC		 2277 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2278 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2279 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2280 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2281 return TRUE;
886a2506
NC		 2282 }
2283
34e967a5
MC		 2284 /* This is a reference to a symbol defined by a dynamic object which
2285 is not a function. */
2286
2287 /* If we are creating a shared library, we must presume that the
2288 only references to the symbol are via the global offset table.
2289 For such cases we need not do anything here; the relocations will
2290 be handled correctly by relocate_section. */
3c8adaca
CZ		 2291 if (!bfd_link_executable (info))
2292 return TRUE;
2293
2294 /* If there are no non-GOT references, we do not need a copy
2295 relocation. */
2296 if (!h->non_got_ref)
34e967a5
MC		 2297 return TRUE;
2298
3c8adaca
CZ		 2299 /* If -z nocopyreloc was given, we won't generate them either. */
2300 if (info->nocopyreloc)
2301 {
2302 h->non_got_ref = 0;
2303 return TRUE;
2304 }
2305
34e967a5
MC		 2306 /* We must allocate the symbol in our .dynbss section, which will
2307 become part of the .bss section of the executable. There will be
2308 an entry for this symbol in the .dynsym section. The dynamic
2309 object will contain position independent code, so all references
2310 from the dynamic object to this symbol will go through the global
2311 offset table. The dynamic linker will use the .dynsym entry to
2312 determine the address it must put in the global offset table, so
2313 both the dynamic object and the regular object will refer to the
2314 same memory location for the variable. */
2315
3c8adaca
CZ		 2316 if (htab == NULL)
2317 return FALSE;
34e967a5
MC		 2318
2319 /* We must generate a R_ARC_COPY reloc to tell the dynamic linker to
2320 copy the initial value out of the dynamic object and into the
2321 runtime process image. We need to remember the offset into the
2322 .rela.bss section we are going to use. */
2323 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2324 {
8a36df4d 2325 struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
34e967a5 2326
9d19e4fd
AM		 2327 BFD_ASSERT (arc_htab->elf.srelbss != NULL);
2328 arc_htab->elf.srelbss->size += sizeof (Elf32_External_Rela);
34e967a5
MC		 2329 h->needs_copy = 1;
2330 }
2331
8a36df4d 2332 /* TODO: Move this also to arc_hash_table. */
3c8adaca
CZ		 2333 s = bfd_get_section_by_name (dynobj, ".dynbss");
2334 BFD_ASSERT (s != NULL);
34e967a5 2335
3c8adaca 2336 return _bfd_elf_adjust_dynamic_copy (info, h, s);
886a2506
NC		 2337}
2338
2339/* Function : elf_arc_finish_dynamic_symbol
2340 Brief : Finish up dynamic symbol handling. We set the
34e967a5 2341 contents of various dynamic sections here.
886a2506 2342 Args : output_bfd :
34e967a5
MC		 2343 info :
2344 h :
2345 sym :
886a2506 2346 Returns : True/False as the return status. */
34e967a5 2347
886a2506
NC		 2348static bfd_boolean
2349elf_arc_finish_dynamic_symbol (bfd * output_bfd,
2350 struct bfd_link_info *info,
2351 struct elf_link_hash_entry *h,
2352 Elf_Internal_Sym * sym)
2353{
34e967a5 2354 if (h->plt.offset != (bfd_vma) -1)
886a2506 2355 {
34e967a5
MC		 2356 relocate_plt_for_symbol (output_bfd, info, h);
2357
2358 if (!h->def_regular)
886a2506 2359 {
34e967a5
MC		 2360 /* Mark the symbol as undefined, rather than as defined in
2361 the .plt section. Leave the value alone. */
2362 sym->st_shndx = SHN_UNDEF;
886a2506 2363 }
34e967a5
MC		 2364 }
2365
34e967a5 2366
08759e0f
CM		 2367 /* This function traverses list of GOT entries and
2368 create respective dynamic relocs. */
2369 /* TODO: Make function to get list and not access the list directly. */
2370 /* TODO: Move function to relocate_section create this relocs eagerly. */
2371 create_got_dynrelocs_for_got_info (&h->got.glist,
2372 output_bfd,
2373 info,
2374 h);
34e967a5
MC		 2375
2376 if (h->needs_copy)
2377 {
8a36df4d
CM		 2378 struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
2379
2380 if (h->dynindx == -1
2381 || (h->root.type != bfd_link_hash_defined
2382 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 2383 || arc_htab->elf.srelbss == NULL)
8a36df4d
CM		 2384 abort ();
2385
34e967a5
MC		 2386 bfd_vma rel_offset = (h->root.u.def.value
2387 + h->root.u.def.section->output_section->vma
2388 + h->root.u.def.section->output_offset);
2389
9d19e4fd
AM		 2390 bfd_byte * loc = arc_htab->elf.srelbss->contents
2391 + (arc_htab->elf.srelbss->reloc_count * sizeof (Elf32_External_Rela));
2392 arc_htab->elf.srelbss->reloc_count++;
34e967a5
MC		 2393
2394 Elf_Internal_Rela rel;
2395 rel.r_addend = 0;
2396 rel.r_offset = rel_offset;
94e5c971
CZ		 2397
2398 BFD_ASSERT (h->dynindx != -1);
34e967a5
MC		 2399 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY);
2400
23a42089 2401 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
886a2506
NC		 2402 }
2403
2404 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2405 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2406 || strcmp (h->root.root.string, "__DYNAMIC") == 0
2407 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2408 sym->st_shndx = SHN_ABS;
2409
2410 return TRUE;
2411}
2412
4ade44b7 2413#define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION) \
34e967a5
MC		 2414 case TAG: \
2415 if (SYMBOL != NULL) \
4ade44b7
AM		 2416 h = elf_link_hash_lookup (elf_hash_table (info), \
2417 SYMBOL, FALSE, FALSE, TRUE); \
34e967a5 2418 else if (SECTION != NULL) \
4ade44b7 2419 s = bfd_get_linker_section (dynobj, SECTION); \
34e967a5 2420 break;
886a2506
NC		 2421
2422/* Function : elf_arc_finish_dynamic_sections
2423 Brief : Finish up the dynamic sections handling.
2424 Args : output_bfd :
34e967a5
MC		 2425 info :
2426 h :
2427 sym :
886a2506 2428 Returns : True/False as the return status. */
34e967a5 2429
886a2506 2430static bfd_boolean
34e967a5
MC		 2431elf_arc_finish_dynamic_sections (bfd * output_bfd,
2432 struct bfd_link_info *info)
886a2506 2433{
34e967a5 2434 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2435 bfd *dynobj = (elf_hash_table (info))->dynobj;
034fed0b 2436 asection *sdyn = bfd_get_linker_section (dynobj, ".dynamic");
886a2506 2437
034fed0b 2438 if (sdyn)
886a2506
NC		 2439 {
2440 Elf32_External_Dyn *dyncon, *dynconend;
2441
034fed0b 2442 dyncon = (Elf32_External_Dyn *) sdyn->contents;
08759e0f 2443 dynconend
034fed0b 2444 = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
886a2506
NC		 2445 for (; dyncon < dynconend; dyncon++)
2446 {
2447 Elf_Internal_Dyn internal_dyn;
2448 bfd_boolean do_it = FALSE;
2449
2450 struct elf_link_hash_entry *h = NULL;
2451 asection *s = NULL;
2452
2453 bfd_elf32_swap_dyn_in (dynobj, dyncon, &internal_dyn);
2454
2455 switch (internal_dyn.d_tag)
2456 {
65b94e90
CM		 2457 GET_SYMBOL_OR_SECTION (DT_INIT, info->init_function, NULL)
2458 GET_SYMBOL_OR_SECTION (DT_FINI, info->fini_function, NULL)
4ade44b7
AM		 2459 GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt")
2460 GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt")
2461 GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt")
4ade44b7
AM		 2462 GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version")
2463 GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d")
2464 GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r")
886a2506
NC		 2465 default:
2466 break;
2467 }
2468
34e967a5 2469 /* In case the dynamic symbols should be updated with a symbol. */
886a2506
NC		 2470 if (h != NULL
2471 && (h->root.type == bfd_link_hash_defined
34e967a5 2472 || h->root.type == bfd_link_hash_defweak))
886a2506
NC		 2473 {
2474 asection *asec_ptr;
2475
2476 internal_dyn.d_un.d_val = h->root.u.def.value;
2477 asec_ptr = h->root.u.def.section;
2478 if (asec_ptr->output_section != NULL)
2479 {
2480 internal_dyn.d_un.d_val +=
08759e0f
CM		 2481 (asec_ptr->output_section->vma
2482 + asec_ptr->output_offset);
886a2506
NC		 2483 }
2484 else
2485 {
34e967a5
MC		 2486 /* The symbol is imported from another shared
2487 library and does not apply to this one. */
886a2506
NC		 2488 internal_dyn.d_un.d_val = 0;
2489 }
2490 do_it = TRUE;
2491 }
2492 else if (s != NULL) /* With a section information. */
2493 {
2494 switch (internal_dyn.d_tag)
2495 {
2496 case DT_PLTGOT:
2497 case DT_JMPREL:
34e967a5
MC		 2498 case DT_VERSYM:
2499 case DT_VERDEF:
2500 case DT_VERNEED:
4ade44b7
AM		 2501 internal_dyn.d_un.d_ptr = (s->output_section->vma
2502 + s->output_offset);
886a2506
NC		 2503 do_it = TRUE;
2504 break;
2505
2506 case DT_PLTRELSZ:
2507 internal_dyn.d_un.d_val = s->size;
2508 do_it = TRUE;
2509 break;
2510
886a2506
NC		 2511 default:
2512 break;
2513 }
2514 }
2515
4ade44b7 2516 if (do_it)
886a2506
NC		 2517 bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon);
2518 }
2519
34e967a5 2520 if (htab->splt->size > 0)
886a2506 2521 {
34e967a5 2522 relocate_plt_for_entry (output_bfd, info);
886a2506
NC		 2523 }
2524
34e967a5 2525 /* TODO: Validate this. */
034fed0b
AM		 2526 if (htab->srelplt->output_section != bfd_abs_section_ptr)
2527 elf_section_data (htab->srelplt->output_section)
2528 ->this_hdr.sh_entsize = 12;
886a2506
NC		 2529 }
2530
2531 /* Fill in the first three entries in the global offset table. */
34e967a5 2532 if (htab->sgot)
886a2506 2533 {
3b63d2ce
CM		 2534 struct elf_link_hash_entry *h;
2535 h = elf_link_hash_lookup (elf_hash_table (info), "_GLOBAL_OFFSET_TABLE_",
2536 FALSE, FALSE, TRUE);
2537
2538 if (h != NULL && h->root.type != bfd_link_hash_undefined
2539 && h->root.u.def.section != NULL)
886a2506 2540 {
3b63d2ce
CM		 2541 asection *sec = h->root.u.def.section;
2542
034fed0b 2543 if (sdyn == NULL)
886a2506 2544 bfd_put_32 (output_bfd, (bfd_vma) 0,
3b63d2ce 2545 sec->contents);
886a2506
NC		 2546 else
2547 bfd_put_32 (output_bfd,
034fed0b 2548 sdyn->output_section->vma + sdyn->output_offset,
3b63d2ce
CM		 2549 sec->contents);
2550 bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 4);
2551 bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 8);
886a2506
NC		 2552 }
2553 }
2554
886a2506
NC		 2555 return TRUE;
2556}
2557
34e967a5
MC		 2558#define ADD_DYNAMIC_SYMBOL(NAME, TAG) \
2559 h = elf_link_hash_lookup (elf_hash_table (info), \
2560 NAME, FALSE, FALSE, FALSE); \
2561 if ((h != NULL && (h->ref_regular || h->def_regular))) \
2562 if (! _bfd_elf_add_dynamic_entry (info, TAG, 0)) \
886a2506
NC		 2563 return FALSE;
2564
2565/* Set the sizes of the dynamic sections. */
2566static bfd_boolean
034fed0b 2567elf_arc_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
34e967a5 2568 struct bfd_link_info *info)
886a2506 2569{
034fed0b
AM		 2570 bfd *dynobj;
2571 asection *s;
2572 bfd_boolean relocs_exist = FALSE;
2573 bfd_boolean reltext_exist = FALSE;
34e967a5 2574 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2575
034fed0b 2576 dynobj = htab->dynobj;
886a2506
NC		 2577 BFD_ASSERT (dynobj != NULL);
2578
034fed0b 2579 if (htab->dynamic_sections_created)
886a2506
NC		 2580 {
2581 struct elf_link_hash_entry *h;
2582
34e967a5
MC		 2583 /* Set the contents of the .interp section to the
2584 interpreter. */
034fed0b 2585 if (bfd_link_executable (info) && !info->nointerp)
886a2506
NC		 2586 {
2587 s = bfd_get_section_by_name (dynobj, ".interp");
2588 BFD_ASSERT (s != NULL);
34e967a5 2589 s->size = sizeof (ELF_DYNAMIC_INTERPRETER);
886a2506
NC		 2590 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2591 }
2592
34e967a5
MC		 2593 /* Add some entries to the .dynamic section. We fill in some of
2594 the values later, in elf_bfd_final_link, but we must add the
2595 entries now so that we know the final size of the .dynamic
2596 section. Checking if the .init section is present. We also
2597 create DT_INIT and DT_FINI entries if the init_str has been
2598 changed by the user. */
65b94e90
CM		 2599 ADD_DYNAMIC_SYMBOL (info->init_function, DT_INIT);
2600 ADD_DYNAMIC_SYMBOL (info->fini_function, DT_FINI);
886a2506
NC		 2601 }
2602 else
2603 {
34e967a5
MC		 2604 /* We may have created entries in the .rela.got section.
2605 However, if we are not creating the dynamic sections, we will
2606 not actually use these entries. Reset the size of .rela.got,
2607 which will cause it to get stripped from the output file
2608 below. */
2609 if (htab->srelgot != NULL)
2610 htab->srelgot->size = 0;
886a2506
NC		 2611 }
2612
2613 for (s = dynobj->sections; s != NULL; s = s->next)
2614 {
34e967a5 2615 if ((s->flags & SEC_LINKER_CREATED) == 0)
886a2506
NC		 2616 continue;
2617
034fed0b
AM		 2618 if (s == htab->splt
2619 || s == htab->sgot
2620 || s == htab->sgotplt
2621 || s == htab->sdynbss)
886a2506 2622 {
034fed0b
AM		 2623 /* Strip this section if we don't need it. */
2624 }
2625 else if (strncmp (s->name, ".rela", 5) == 0)
2626 {
2627 if (s->size != 0 && s != htab->srelplt)
34e967a5 2628 {
034fed0b 2629 if (!reltext_exist)
34e967a5 2630 {
034fed0b
AM		 2631 const char *name = s->name + 5;
2632 bfd *ibfd;
2633 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
2634 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour)
2635 {
2636 asection *target = bfd_get_section_by_name (ibfd, name);
2637 if (target != NULL
2638 && elf_section_data (target)->sreloc == s
2639 && ((target->output_section->flags
2640 & (SEC_READONLY | SEC_ALLOC))
2641 == (SEC_READONLY | SEC_ALLOC)))
2642 {
2643 reltext_exist = TRUE;
2644 break;
2645 }
2646 }
34e967a5 2647 }
034fed0b 2648 relocs_exist = TRUE;
34e967a5 2649 }
886a2506 2650
34e967a5
MC		 2651 /* We use the reloc_count field as a counter if we need to
2652 copy relocs into the output file. */
2653 s->reloc_count = 0;
886a2506 2654 }
034fed0b
AM		 2655 else
2656 {
2657 /* It's not one of our sections, so don't allocate space. */
2658 continue;
2659 }
34e967a5 2660
034fed0b
AM		 2661 if (s->size == 0)
2662 {
2663 s->flags |= SEC_EXCLUDE;
2664 continue;
2665 }
34e967a5 2666
034fed0b
AM		 2667 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2668 continue;
34e967a5 2669
034fed0b
AM		 2670 /* Allocate memory for the section contents. */
2671 s->contents = bfd_zalloc (dynobj, s->size);
2672 if (s->contents == NULL)
34e967a5 2673 return FALSE;
886a2506
NC		 2674 }
2675
034fed0b 2676 if (htab->dynamic_sections_created)
886a2506 2677 {
34e967a5
MC		 2678 /* TODO: Check if this is needed. */
2679 if (!bfd_link_pic (info))
2680 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
2681 return FALSE;
2682
2683 if (htab->splt && (htab->splt->flags & SEC_EXCLUDE) == 0)
886a2506
NC		 2684 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
2685 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
2686 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
034fed0b 2687 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
886a2506
NC		 2688 return FALSE;
2689
034fed0b 2690 if (relocs_exist)
886a2506
NC		 2691 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
2692 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
2ab2f40d 2693 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
034fed0b 2694 sizeof (Elf32_External_Rela)))
886a2506
NC		 2695 return FALSE;
2696
034fed0b 2697 if (reltext_exist)
886a2506
NC		 2698 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
2699 return FALSE;
2700 }
2701
2702 return TRUE;
2703}
2704
0f7f3789
CM		 2705
2706/* Classify dynamic relocs such that -z combreloc can reorder and combine
2707 them. */
2708static enum elf_reloc_type_class
2709elf32_arc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2710 const asection *rel_sec ATTRIBUTE_UNUSED,
2711 const Elf_Internal_Rela *rela)
2712{
2713 switch ((int) ELF32_R_TYPE (rela->r_info))
2714 {
2715 case R_ARC_RELATIVE:
2716 return reloc_class_relative;
2717 case R_ARC_JMP_SLOT:
2718 return reloc_class_plt;
2719 case R_ARC_COPY:
2720 return reloc_class_copy;
2721 /* TODO: Needed in future to support ifunc. */
2722 /*
2723 case R_ARC_IRELATIVE:
2724 return reloc_class_ifunc;
2725 */
2726 default:
2727 return reloc_class_normal;
2728 }
2729}
2730
34e967a5
MC		 2731const struct elf_size_info arc_elf32_size_info =
2732{
2733 sizeof (Elf32_External_Ehdr),
2734 sizeof (Elf32_External_Phdr),
2735 sizeof (Elf32_External_Shdr),
2736 sizeof (Elf32_External_Rel),
2737 sizeof (Elf32_External_Rela),
2738 sizeof (Elf32_External_Sym),
2739 sizeof (Elf32_External_Dyn),
2740 sizeof (Elf_External_Note),
2741 4,
2742 1,
2743 32, 2,
2744 ELFCLASS32, EV_CURRENT,
2745 bfd_elf32_write_out_phdrs,
2746 bfd_elf32_write_shdrs_and_ehdr,
2747 bfd_elf32_checksum_contents,
2748 bfd_elf32_write_relocs,
2749 bfd_elf32_swap_symbol_in,
2750 bfd_elf32_swap_symbol_out,
2751 bfd_elf32_slurp_reloc_table,
2752 bfd_elf32_slurp_symbol_table,
2753 bfd_elf32_swap_dyn_in,
2754 bfd_elf32_swap_dyn_out,
2755 bfd_elf32_swap_reloc_in,
2756 bfd_elf32_swap_reloc_out,
2757 bfd_elf32_swap_reloca_in,
2758 bfd_elf32_swap_reloca_out
2759};
2760
2761#define elf_backend_size_info arc_elf32_size_info
2762
34e967a5
MC		 2763/* Hook called by the linker routine which adds symbols from an object
2764 file. */
2765
2766static bfd_boolean
2767elf_arc_add_symbol_hook (bfd * abfd,
2768 struct bfd_link_info * info,
2769 Elf_Internal_Sym * sym,
2770 const char ** namep ATTRIBUTE_UNUSED,
2771 flagword * flagsp ATTRIBUTE_UNUSED,
2772 asection ** secp ATTRIBUTE_UNUSED,
2773 bfd_vma * valp ATTRIBUTE_UNUSED)
2774{
a43942db 2775 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
34e967a5
MC		 2776 && (abfd->flags & DYNAMIC) == 0
2777 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 2778 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
34e967a5
MC		 2779
2780 return TRUE;
2781}
886a2506 2782
47f7f636
AK		 2783/* GDB expects general purpose registers to be in section .reg. However Linux
2784 kernel doesn't create this section and instead writes registers to NOTE
2785 section. It is up to the binutils to create a pseudo-section .reg from the
2786 contents of NOTE. Also BFD will read pid and signal number from NOTE. This
2787 function relies on offsets inside elf_prstatus structure in Linux to be
2788 stable. */
2789
2790static bfd_boolean
2791elf32_arc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2792{
2793 int offset;
2794 size_t size;
2795
2796 switch (note->descsz)
2797 {
2798 default:
2799 return FALSE;
2800
2801 case 236: /* sizeof (struct elf_prstatus) on Linux/arc. */
2802 /* pr_cursig */
2803 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2804 /* pr_pid */
2805 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2806 /* pr_regs */
2807 offset = 72;
2808 size = (40 * 4); /* There are 40 registers in user_regs_struct. */
2809 break;
2810 }
2811 /* Make a ".reg/999" section. */
2812 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
2813 note->descpos + offset);
2814}
2815
53a346d8
CZ		 2816/* Determine whether an object attribute tag takes an integer, a
2817 string or both. */
2818
2819static int
2820elf32_arc_obj_attrs_arg_type (int tag)
2821{
2822 if (tag == Tag_ARC_CPU_name
2823 || tag == Tag_ARC_ISA_config
2824 || tag == Tag_ARC_ISA_apex)
2825 return ATTR_TYPE_FLAG_STR_VAL;
2826 else if (tag < (Tag_ARC_ISA_mpy_option + 1))
2827 return ATTR_TYPE_FLAG_INT_VAL;
2828 else
2829 return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
2830}
2831
2832/* Attribute numbers >=14 can be safely ignored. */
2833
2834static bfd_boolean
2835elf32_arc_obj_attrs_handle_unknown (bfd *abfd, int tag)
2836{
2837 if ((tag & 127) < (Tag_ARC_ISA_mpy_option + 1))
2838 {
2839 _bfd_error_handler
2840 (_("%B: Unknown mandatory ARC object attribute %d."),
2841 abfd, tag);
2842 bfd_set_error (bfd_error_bad_value);
2843 return FALSE;
2844 }
2845 else
2846 {
2847 _bfd_error_handler
2848 (_("Warning: %B: Unknown ARC object attribute %d."),
2849 abfd, tag);
2850 return TRUE;
2851 }
2852}
2853
2854/* Handle an ARC specific section when reading an object file. This is
2855 called when bfd_section_from_shdr finds a section with an unknown
2856 type. */
2857
2858static bfd_boolean
2859elf32_arc_section_from_shdr (bfd *abfd,
2860 Elf_Internal_Shdr * hdr,
2861 const char *name,
2862 int shindex)
2863{
2864 switch (hdr->sh_type)
2865 {
2866 case SHT_ARC_ATTRIBUTES:
2867 break;
2868
2869 default:
2870 return FALSE;
2871 }
2872
2873 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2874 return FALSE;
2875
2876 return TRUE;
2877}
2878
6d00b590 2879#define TARGET_LITTLE_SYM arc_elf32_le_vec
47b0e7ad 2880#define TARGET_LITTLE_NAME "elf32-littlearc"
886a2506
NC		 2881#define TARGET_BIG_SYM arc_elf32_be_vec
2882#define TARGET_BIG_NAME "elf32-bigarc"
2883#define ELF_ARCH bfd_arch_arc
8a36df4d 2884#define ELF_TARGET_ID ARC_ELF_DATA
886a2506
NC		 2885#define ELF_MACHINE_CODE EM_ARC_COMPACT
2886#define ELF_MACHINE_ALT1 EM_ARC_COMPACT2
2887#define ELF_MAXPAGESIZE 0x2000
2888
34e967a5
MC		 2889#define bfd_elf32_bfd_link_hash_table_create arc_elf_link_hash_table_create
2890
2891#define bfd_elf32_bfd_merge_private_bfd_data arc_elf_merge_private_bfd_data
2892#define bfd_elf32_bfd_reloc_type_lookup arc_elf32_bfd_reloc_type_lookup
2893#define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags
2894#define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data
2895#define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data
2896
886a2506
NC		 2897#define elf_info_to_howto_rel arc_info_to_howto_rel
2898#define elf_backend_object_p arc_elf_object_p
2899#define elf_backend_final_write_processing arc_elf_final_write_processing
2900
2901#define elf_backend_relocate_section elf_arc_relocate_section
2902#define elf_backend_check_relocs elf_arc_check_relocs
9d19e4fd 2903#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
886a2506 2904
0f7f3789
CM		 2905#define elf_backend_reloc_type_class elf32_arc_reloc_type_class
2906
886a2506
NC		 2907#define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol
2908#define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol
2909
2910#define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections
2911#define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections
08759e0f 2912#define elf_backend_add_symbol_hook elf_arc_add_symbol_hook
886a2506
NC		 2913
2914#define elf_backend_can_gc_sections 1
2915#define elf_backend_want_got_plt 1
2916#define elf_backend_plt_readonly 1
34e967a5 2917#define elf_backend_rela_plts_and_copies_p 1
886a2506
NC		 2918#define elf_backend_want_plt_sym 0
2919#define elf_backend_got_header_size 12
64f52338 2920#define elf_backend_dtrel_excludes_plt 1
886a2506
NC		 2921
2922#define elf_backend_may_use_rel_p 0
2923#define elf_backend_may_use_rela_p 1
2924#define elf_backend_default_use_rela_p 1
252b5132 2925
47f7f636
AK		 2926#define elf_backend_grok_prstatus elf32_arc_grok_prstatus
2927
3c8adaca
CZ		 2928#define elf_backend_default_execstack 0
2929
53a346d8
CZ		 2930#undef elf_backend_obj_attrs_vendor
2931#define elf_backend_obj_attrs_vendor "ARC"
2932#undef elf_backend_obj_attrs_section
2933#define elf_backend_obj_attrs_section ".ARC.attributes"
2934#undef elf_backend_obj_attrs_arg_type
2935#define elf_backend_obj_attrs_arg_type elf32_arc_obj_attrs_arg_type
2936#undef elf_backend_obj_attrs_section_type
2937#define elf_backend_obj_attrs_section_type SHT_ARC_ATTRIBUTES
2938#define elf_backend_obj_attrs_handle_unknown elf32_arc_obj_attrs_handle_unknown
2939
2940#define elf_backend_section_from_shdr elf32_arc_section_from_shdr
2941
252b5132 2942#include "elf32-target.h"
GDB Binutils - Deliverables
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