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[ARC] Fixed condition to generate TEXTREL.
[thirdparty/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 1189#define TLS_TBSS (8)
34e967a5 1190
886a2506
NC		 1191#define none (0)
1192
f7e8b360
NC		 1193#ifdef ARC_ENABLE_DEBUG
1194#define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA, TYPE) \
1195 do \
1196 { \
1197 asection *sym_section = reloc_data.sym_section; \
1198 asection *input_section = reloc_data.input_section; \
1199 ARC_DEBUG ("RELOC_TYPE = " TYPE "\n"); \
1200 ARC_DEBUG ("FORMULA = " FORMULA "\n"); \
1201 ARC_DEBUG ("S = %#lx\n", S); \
1202 ARC_DEBUG ("A = %#lx\n", A); \
1203 ARC_DEBUG ("L = %lx\n", L); \
1204 if (sym_section->output_section != NULL) \
1205 ARC_DEBUG ("symbol_section->vma = %#lx\n", \
1206 sym_section->output_section->vma \
1207 + sym_section->output_offset); \
1208 else \
1209 ARC_DEBUG ("symbol_section->vma = NULL\n"); \
1210 if (input_section->output_section != NULL) \
1211 ARC_DEBUG ("symbol_section->vma = %#lx\n", \
1212 input_section->output_section->vma \
1213 + input_section->output_offset); \
1214 else \
1215 ARC_DEBUG ("symbol_section->vma = NULL\n"); \
1216 ARC_DEBUG ("PCL = %#lx\n", P); \
1217 ARC_DEBUG ("P = %#lx\n", P); \
1218 ARC_DEBUG ("G = %#lx\n", G); \
1219 ARC_DEBUG ("SDA_OFFSET = %#lx\n", _SDA_BASE_); \
34e967a5 1220 ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \
f7e8b360
NC		 1221 ARC_DEBUG ("GOT_OFFSET = %#lx\n", GOT); \
1222 ARC_DEBUG ("relocation = %#08lx\n", relocation); \
1223 ARC_DEBUG ("before = %#08x\n", (unsigned) insn); \
1224 ARC_DEBUG ("data = %08x (%u) (%d)\n", (unsigned) relocation, \
1225 (unsigned) relocation, (int) relocation); \
1226 } \
1227 while (0)
1228
1229#define PRINT_DEBUG_RELOC_INFO_AFTER \
1230 do \
1231 { \
1232 ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \
1233 } \
1234 while (0)
34e967a5 1235
f7e8b360
NC		 1236#else
1237
1238#define PRINT_DEBUG_RELOC_INFO_BEFORE(...)
1239#define PRINT_DEBUG_RELOC_INFO_AFTER
1240
1241#endif /* ARC_ENABLE_DEBUG */
34e967a5 1242
886a2506 1243#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
f7e8b360
NC		 1244 case R_##TYPE: \
1245 { \
1246 bfd_signed_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \
1247 relocation = FORMULA ; \
1248 PRINT_DEBUG_RELOC_INFO_BEFORE (#FORMULA, #TYPE); \
1249 insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \
1250 insn = (* get_replace_function (abfd, TYPE)) (insn, relocation); \
1251 insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \
1252 PRINT_DEBUG_RELOC_INFO_AFTER; \
1253 } \
886a2506
NC		 1254 break;
1255
1256static bfd_reloc_status_type
34e967a5
MC		 1257arc_do_relocation (bfd_byte * contents,
1258 struct arc_relocation_data reloc_data,
1259 struct bfd_link_info *info)
886a2506 1260{
094fb063 1261 bfd_signed_vma relocation = 0;
886a2506
NC		 1262 bfd_vma insn;
1263 bfd_vma orig_insn ATTRIBUTE_UNUSED;
72f3b6aa 1264 bfd * abfd = reloc_data.input_section->owner;
34e967a5 1265 struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info);
4b0c052e 1266 bfd_reloc_status_type flag;
886a2506 1267
535b785f 1268 if (!reloc_data.should_relocate)
34e967a5 1269 return bfd_reloc_ok;
886a2506
NC		 1270
1271 switch (reloc_data.howto->size)
1272 {
1273 case 2:
72f3b6aa 1274 insn = arc_bfd_get_32 (abfd,
886a2506
NC		 1275 contents + reloc_data.reloc_offset,
1276 reloc_data.input_section);
1277 break;
1278 case 1:
72f3b6aa
CZ		 1279 insn = arc_bfd_get_16 (abfd,
1280 contents + reloc_data.reloc_offset,
1281 reloc_data.input_section);
1282 break;
886a2506 1283 case 0:
72f3b6aa 1284 insn = arc_bfd_get_8 (abfd,
886a2506
NC		 1285 contents + reloc_data.reloc_offset,
1286 reloc_data.input_section);
1287 break;
1288 default:
1289 insn = 0;
1290 BFD_ASSERT (0);
1291 break;
1292 }
1293
1294 orig_insn = insn;
1295
1296 switch (reloc_data.howto->type)
1297 {
34e967a5 1298#include "elf/arc-reloc.def"
886a2506
NC		 1299
1300 default:
1301 BFD_ASSERT (0);
1302 break;
1303 }
1304
1305 /* Check for relocation overflow. */
1306 if (reloc_data.howto->complain_on_overflow != complain_overflow_dont)
4b0c052e 1307 flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow,
08759e0f
CM		 1308 reloc_data.howto->bitsize,
1309 reloc_data.howto->rightshift,
1310 bfd_arch_bits_per_address (abfd),
1311 relocation);
4b0c052e
AB		 1312 else
1313 flag = arc_special_overflow_checks (reloc_data, relocation, info);
886a2506 1314
4b0c052e
AB		 1315 if (flag != bfd_reloc_ok)
1316 {
f7e8b360 1317 ARC_DEBUG ("Relocation overflows !\n");
4b0c052e 1318 DEBUG_ARC_RELOC (reloc_data);
f7e8b360
NC		 1319 ARC_DEBUG ("Relocation value = signed -> %d, unsigned -> %u"
1320 ", hex -> (0x%08x)\n",
1321 (int) relocation, (unsigned) relocation, (int) relocation);
886a2506 1322
4b0c052e 1323 return flag;
886a2506 1324 }
886a2506 1325
4b0c052e 1326 /* Write updated instruction back to memory. */
886a2506
NC		 1327 switch (reloc_data.howto->size)
1328 {
1329 case 2:
72f3b6aa 1330 arc_bfd_put_32 (abfd, insn,
886a2506
NC		 1331 contents + reloc_data.reloc_offset,
1332 reloc_data.input_section);
1333 break;
1334 case 1:
72f3b6aa
CZ		 1335 arc_bfd_put_16 (abfd, insn,
1336 contents + reloc_data.reloc_offset,
1337 reloc_data.input_section);
1338 break;
886a2506 1339 case 0:
72f3b6aa 1340 arc_bfd_put_8 (abfd, insn,
886a2506
NC		 1341 contents + reloc_data.reloc_offset,
1342 reloc_data.input_section);
1343 break;
1344 default:
1345 ARC_DEBUG ("size = %d\n", reloc_data.howto->size);
1346 BFD_ASSERT (0);
1347 break;
1348 }
1349
1350 return bfd_reloc_ok;
1351}
1352#undef S
1353#undef A
1354#undef B
1355#undef G
1356#undef GOT
1357#undef L
1358#undef MES
1359#undef P
1360#undef SECTSTAR
1361#undef SECTSTART
1362#undef _SDA_BASE_
1363#undef none
1364
1365#undef ARC_RELOC_HOWTO
1366
886a2506 1367
886a2506
NC		 1368/* Relocate an arc ELF section.
1369 Function : elf_arc_relocate_section
1370 Brief : Relocate an arc section, by handling all the relocations
34e967a5 1371 appearing in that section.
886a2506 1372 Args : output_bfd : The bfd being written to.
34e967a5
MC		 1373 info : Link information.
1374 input_bfd : The input bfd.
1375 input_section : The section being relocated.
1376 contents : contents of the section being relocated.
1377 relocs : List of relocations in the section.
1378 local_syms : is a pointer to the swapped in local symbols.
1379 local_section : is an array giving the section in the input file
1380 corresponding to the st_shndx field of each
1381 local symbol. */
886a2506 1382static bfd_boolean
f7e8b360 1383elf_arc_relocate_section (bfd * output_bfd,
886a2506 1384 struct bfd_link_info * info,
f7e8b360
NC		 1385 bfd * input_bfd,
1386 asection * input_section,
1387 bfd_byte * contents,
886a2506
NC		 1388 Elf_Internal_Rela * relocs,
1389 Elf_Internal_Sym * local_syms,
f7e8b360 1390 asection ** local_sections)
886a2506 1391{
f7e8b360
NC		 1392 Elf_Internal_Shdr * symtab_hdr;
1393 struct elf_link_hash_entry ** sym_hashes;
1394 Elf_Internal_Rela * rel;
1395 Elf_Internal_Rela * wrel;
1396 Elf_Internal_Rela * relend;
1397 struct elf_link_hash_table * htab = elf_hash_table (info);
886a2506
NC		 1398
1399 symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr);
1400 sym_hashes = elf_sym_hashes (input_bfd);
1401
3c8adaca 1402 rel = wrel = relocs;
886a2506 1403 relend = relocs + input_section->reloc_count;
3c8adaca 1404 for (; rel < relend; wrel++, rel++)
886a2506
NC		 1405 {
1406 enum elf_arc_reloc_type r_type;
34e967a5 1407 reloc_howto_type * howto;
f7e8b360 1408 unsigned long r_symndx;
886a2506 1409 struct elf_link_hash_entry * h;
34e967a5
MC		 1410 Elf_Internal_Sym * sym;
1411 asection * sec;
f7e8b360
NC		 1412 struct elf_link_hash_entry * h2;
1413 const char * msg;
f4e6805f 1414 bfd_boolean unresolved_reloc = FALSE;
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 {
f4e6805f
CM		 1502 bfd_boolean warned, ignored;
1503 bfd_vma relocation ATTRIBUTE_UNUSED;
1504
1505 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1506 r_symndx, symtab_hdr, sym_hashes,
1507 h, sec, relocation,
1508 unresolved_reloc, warned, ignored);
1509
3c8adaca
CZ		 1510 /* TODO: This code is repeated from below. We should
1511 clean it and remove duplications.
1512 Sec is used check for discarded sections.
1513 Need to redesign code below. */
1514
1515 /* Get the symbol's entry in the symtab. */
1516 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1517
1518 while (h->root.type == bfd_link_hash_indirect
1519 || h->root.type == bfd_link_hash_warning)
1520 h = (struct elf_link_hash_entry *) h->root.u.i.link;
1521
1522 /* If we have encountered a definition for this symbol. */
1523 if (h->root.type == bfd_link_hash_defined
1524 || h->root.type == bfd_link_hash_defweak)
1525 {
1526 reloc_data.sym_value = h->root.u.def.value;
1527 sec = h->root.u.def.section;
1528 }
1529 }
1530
1531 /* Clean relocs for symbols in discarded sections. */
1532 if (sec != NULL && discarded_section (sec))
1533 {
1534 _bfd_clear_contents (howto, input_bfd, input_section,
1535 contents + rel->r_offset);
1536 rel->r_offset = rel->r_offset;
1537 rel->r_info = 0;
1538 rel->r_addend = 0;
1539
1540 /* For ld -r, remove relocations in debug sections against
1541 sections defined in discarded sections. Not done for
1542 eh_frame editing code expects to be present. */
1543 if (bfd_link_relocatable (info)
1544 && (input_section->flags & SEC_DEBUGGING))
1545 wrel--;
1546
1547 continue;
1548 }
1549
1550 if (bfd_link_relocatable (info))
1551 {
1552 if (wrel != rel)
1553 *wrel = *rel;
1554 continue;
1555 }
1556
1557 if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */
1558 {
886a2506
NC		 1559 reloc_data.sym_value = sym->st_value;
1560 reloc_data.sym_section = sec;
4b0c052e 1561 reloc_data.symbol_name =
3c8adaca
CZ		 1562 bfd_elf_string_from_elf_section (input_bfd,
1563 symtab_hdr->sh_link,
1564 sym->st_name);
886a2506 1565
841fdfcd
CZ		 1566 /* Mergeable section handling. */
1567 if ((sec->flags & SEC_MERGE)
1568 && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
1569 {
1570 asection *msec;
1571 msec = sec;
1572 rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym,
1573 &msec, rel->r_addend);
1574 rel->r_addend -= (sec->output_section->vma
1575 + sec->output_offset
1576 + sym->st_value);
1577 rel->r_addend += msec->output_section->vma + msec->output_offset;
1578
1579 reloc_data.reloc_addend = rel->r_addend;
1580 }
1581
34e967a5
MC		 1582 BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
1583 if (htab->sgot != NULL)
1584 reloc_data.got_symbol_vma = htab->sgot->output_section->vma
1585 + htab->sgot->output_offset;
886a2506
NC		 1586
1587 reloc_data.should_relocate = TRUE;
1588 }
1589 else /* Global symbol. */
1590 {
f7e8b360
NC		 1591 /* FIXME: We should use the RELOC_FOR_GLOBAL_SYMBOL macro
1592 (defined in elf-bfd.h) here. */
1593
886a2506
NC		 1594 /* Get the symbol's entry in the symtab. */
1595 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1596
1597 while (h->root.type == bfd_link_hash_indirect
1598 || h->root.type == bfd_link_hash_warning)
cc89d0b3
CM		 1599 {
1600 struct elf_link_hash_entry *h_old = h;
886a2506 1601 h = (struct elf_link_hash_entry *) h->root.u.i.link;
cc89d0b3
CM		 1602 if (h->got.glist == 0 && h_old->got.glist != h->got.glist)
1603 h->got.glist = h_old->got.glist;
1604 }
886a2506 1605
3c8adaca
CZ		 1606 /* TODO: Need to validate what was the intention. */
1607 /* BFD_ASSERT ((h->dynindx == -1) || (h->forced_local != 0)); */
4b0c052e 1608 reloc_data.symbol_name = h->root.root.string;
3c8adaca 1609
886a2506
NC		 1610 /* If we have encountered a definition for this symbol. */
1611 if (h->root.type == bfd_link_hash_defined
1612 || h->root.type == bfd_link_hash_defweak)
1613 {
1614 reloc_data.sym_value = h->root.u.def.value;
1615 reloc_data.sym_section = h->root.u.def.section;
1616
1617 reloc_data.should_relocate = TRUE;
1618
34e967a5 1619 if (is_reloc_for_GOT (howto) && !bfd_link_pic (info))
886a2506 1620 {
34e967a5
MC		 1621 /* TODO: Change it to use arc_do_relocation with
1622 ARC_32 reloc. Try to use ADD_RELA macro. */
886a2506
NC		 1623 bfd_vma relocation =
1624 reloc_data.sym_value + reloc_data.reloc_addend
34e967a5
MC		 1625 + (reloc_data.sym_section->output_section != NULL ?
1626 (reloc_data.sym_section->output_offset
1627 + reloc_data.sym_section->output_section->vma)
1628 : 0);
1629
1630 BFD_ASSERT (h->got.glist);
1631 bfd_vma got_offset = h->got.glist->offset;
1632 bfd_put_32 (output_bfd, relocation,
1633 htab->sgot->contents + got_offset);
1634 }
1635 if (is_reloc_for_PLT (howto) && h->plt.offset != (bfd_vma) -1)
1636 {
1637 /* TODO: This is repeated up here. */
1638 reloc_data.sym_value = h->plt.offset;
1639 reloc_data.sym_section = htab->splt;
886a2506
NC		 1640 }
1641 }
1642 else if (h->root.type == bfd_link_hash_undefweak)
1643 {
1644 /* Is weak symbol and has no definition. */
34e967a5
MC		 1645 if (is_reloc_for_GOT (howto))
1646 {
1647 reloc_data.sym_value = h->root.u.def.value;
1648 reloc_data.sym_section = htab->sgot;
1649 reloc_data.should_relocate = TRUE;
1650 }
1651 else if (is_reloc_for_PLT (howto)
1652 && h->plt.offset != (bfd_vma) -1)
1653 {
1654 /* TODO: This is repeated up here. */
1655 reloc_data.sym_value = h->plt.offset;
1656 reloc_data.sym_section = htab->splt;
1657 reloc_data.should_relocate = TRUE;
1658 }
1659 else
1660 continue;
886a2506
NC		 1661 }
1662 else
1663 {
1664 if (is_reloc_for_GOT (howto))
1665 {
886a2506 1666 reloc_data.sym_value = h->root.u.def.value;
34e967a5 1667 reloc_data.sym_section = htab->sgot;
886a2506
NC		 1668
1669 reloc_data.should_relocate = TRUE;
1670 }
1671 else if (is_reloc_for_PLT (howto))
1672 {
7e458899
CZ		 1673 /* Fail if it is linking for PIE and the symbol is
1674 undefined. */
1a72702b
AM		 1675 if (bfd_link_executable (info))
1676 (*info->callbacks->undefined_symbol)
1677 (info, h->root.root.string, input_bfd, input_section,
1678 rel->r_offset, TRUE);
886a2506 1679 reloc_data.sym_value = h->plt.offset;
34e967a5 1680 reloc_data.sym_section = htab->splt;
886a2506
NC		 1681
1682 reloc_data.should_relocate = TRUE;
1683 }
8a36df4d 1684 else if (!bfd_link_pic (info) || bfd_link_executable (info))
1a72702b
AM		 1685 (*info->callbacks->undefined_symbol)
1686 (info, h->root.root.string, input_bfd, input_section,
1687 rel->r_offset, TRUE);
886a2506
NC		 1688 }
1689
34e967a5
MC		 1690 BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
1691 if (htab->sgot != NULL)
1692 reloc_data.got_symbol_vma = htab->sgot->output_section->vma
1693 + htab->sgot->output_offset;
886a2506
NC		 1694 }
1695
08759e0f
CM		 1696 if ((is_reloc_for_GOT (howto)
1697 || is_reloc_for_TLS (howto)))
1698 {
980aa3e6
CM		 1699 reloc_data.should_relocate = TRUE;
1700
08759e0f
CM		 1701 struct got_entry **list
1702 = get_got_entry_list_for_symbol (output_bfd, r_symndx, h);
1703
1704 reloc_data.got_offset_value
1705 = relocate_fix_got_relocs_for_got_info (list,
1706 tls_type_for_reloc (howto),
1707 info,
1708 output_bfd,
1709 r_symndx,
1710 local_syms,
1711 local_sections,
1712 h,
1713 &reloc_data);
1714
1715 if (h == NULL)
1716 {
1717 create_got_dynrelocs_for_single_entry (
1718 got_entry_for_type (list,
1719 arc_got_entry_type_for_reloc (howto)),
1720 output_bfd, info, NULL);
1721 }
1722 }
f7e8b360 1723
cd640291
CM		 1724
1725#define IS_ARC_PCREL_TYPE(TYPE) \
1726 ( (TYPE == R_ARC_PC32) \
1727 || (TYPE == R_ARC_32_PCREL))
1728
34e967a5
MC		 1729 switch (r_type)
1730 {
1731 case R_ARC_32:
1732 case R_ARC_32_ME:
1733 case R_ARC_PC32:
1734 case R_ARC_32_PCREL:
cd640291
CM		 1735 if (bfd_link_pic (info)
1736 && (!IS_ARC_PCREL_TYPE (r_type)
34e967a5
MC		 1737 || (h != NULL
1738 && h->dynindx != -1
cd640291 1739 && !h->def_regular
34e967a5
MC		 1740 && (!info->symbolic || !h->def_regular))))
1741 {
1742 Elf_Internal_Rela outrel;
1743 bfd_byte *loc;
1744 bfd_boolean skip = FALSE;
1745 bfd_boolean relocate = FALSE;
1746 asection *sreloc = _bfd_elf_get_dynamic_reloc_section
1747 (input_bfd, input_section,
1748 /*RELA*/ TRUE);
1749
1750 BFD_ASSERT (sreloc != NULL);
1751
1752 outrel.r_offset = _bfd_elf_section_offset (output_bfd,
1753 info,
1754 input_section,
1755 rel->r_offset);
cd640291 1756
34e967a5
MC		 1757 if (outrel.r_offset == (bfd_vma) -1)
1758 skip = TRUE;
1759
1760 outrel.r_addend = rel->r_addend;
1761 outrel.r_offset += (input_section->output_section->vma
1762 + input_section->output_offset);
1763
1764 if (skip)
1765 {
1766 memset (&outrel, 0, sizeof outrel);
1767 relocate = FALSE;
1768 }
3c8adaca
CZ		 1769 else if (h != NULL
1770 && h->dynindx != -1
cd640291
CM		 1771 && (IS_ARC_PCREL_TYPE (r_type)
1772 || !(bfd_link_executable (info)
1773 || SYMBOLIC_BIND (info, h))
1774 || ! h->def_regular))
34e967a5 1775 {
94e5c971 1776 BFD_ASSERT (h != NULL);
34e967a5
MC		 1777 if ((input_section->flags & SEC_ALLOC) != 0)
1778 relocate = FALSE;
1779 else
1780 relocate = TRUE;
94e5c971
CZ		 1781
1782 BFD_ASSERT (h->dynindx != -1);
34e967a5
MC		 1783 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1784 }
1785 else
1786 {
1787 /* Handle local symbols, they either do not have a
1788 global hash table entry (h == NULL), or are
1789 forced local due to a version script
1790 (h->forced_local), or the third condition is
1791 legacy, it appears to say something like, for
1792 links where we are pre-binding the symbols, or
1793 there's not an entry for this symbol in the
1794 dynamic symbol table, and it's a regular symbol
1795 not defined in a shared object, then treat the
1796 symbol as local, resolve it now. */
3c8adaca
CZ		 1797 relocate = TRUE;
1798 /* outrel.r_addend = 0; */
1799 outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE);
34e967a5
MC		 1800 }
1801
1802 BFD_ASSERT (sreloc->contents != 0);
1803
1804 loc = sreloc->contents;
1805 loc += sreloc->reloc_count * sizeof (Elf32_External_Rela);
1806 sreloc->reloc_count += 1;
1807
1808 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1809
535b785f 1810 if (!relocate)
34e967a5
MC		 1811 continue;
1812 }
1813 break;
1814 default:
1815 break;
1816 }
1817
1818 if (is_reloc_SDA_relative (howto)
535b785f 1819 && !reloc_data.sdata_begin_symbol_vma_set)
886a2506 1820 {
4eca0228
AM		 1821 _bfd_error_handler
1822 ("Error: Linker symbol __SDATA_BEGIN__ not found");
886a2506
NC		 1823 bfd_set_error (bfd_error_bad_value);
1824 return FALSE;
1825 }
1826
1827 DEBUG_ARC_RELOC (reloc_data);
34e967a5 1828
2ab2f40d 1829 /* Make sure we have with a dynamic linker. In case of GOT and PLT
08759e0f 1830 the sym_section should point to .got or .plt respectively. */
815dc1bc
CZ		 1831 if ((is_reloc_for_GOT (howto) || is_reloc_for_PLT (howto))
1832 && reloc_data.sym_section == NULL)
2ab2f40d 1833 {
4eca0228 1834 _bfd_error_handler
2ab2f40d
CM		 1835 (_("GOT and PLT relocations cannot be fixed with a non dynamic linker."));
1836 bfd_set_error (bfd_error_bad_value);
1837 return FALSE;
1838 }
1839
f7e8b360
NC		 1840 msg = NULL;
1841 switch (arc_do_relocation (contents, reloc_data, info))
1842 {
1843 case bfd_reloc_ok:
1844 continue; /* The reloc processing loop. */
1845
1846 case bfd_reloc_overflow:
1847 (*info->callbacks->reloc_overflow)
1848 (info, (h ? &h->root : NULL), reloc_data.symbol_name, howto->name, (bfd_vma) 0,
1849 input_bfd, input_section, rel->r_offset);
1850 break;
1851
1852 case bfd_reloc_undefined:
1853 (*info->callbacks->undefined_symbol)
1854 (info, reloc_data.symbol_name, input_bfd, input_section, rel->r_offset, TRUE);
1855 break;
1856
1857 case bfd_reloc_other:
695344c0 1858 /* xgettext:c-format */
f7e8b360
NC		 1859 msg = _("%B(%A): warning: unaligned access to symbol '%s' in the small data area");
1860 break;
1861
1862 case bfd_reloc_outofrange:
695344c0 1863 /* xgettext:c-format */
f7e8b360
NC		 1864 msg = _("%B(%A): internal error: out of range error");
1865 break;
1866
1867 case bfd_reloc_notsupported:
695344c0 1868 /* xgettext:c-format */
f7e8b360
NC		 1869 msg = _("%B(%A): internal error: unsupported relocation error");
1870 break;
1871
1872 case bfd_reloc_dangerous:
695344c0 1873 /* xgettext:c-format */
f7e8b360
NC		 1874 msg = _("%B(%A): internal error: dangerous relocation");
1875 break;
1876
1877 default:
695344c0 1878 /* xgettext:c-format */
f7e8b360
NC		 1879 msg = _("%B(%A): internal error: unknown error");
1880 break;
1881 }
1882
1883 if (msg)
1884 _bfd_error_handler (msg, input_bfd, input_section, reloc_data.symbol_name);
1885 return FALSE;
886a2506
NC		 1886 }
1887
1888 return TRUE;
1889}
1890
8a36df4d
CM		 1891#define elf_arc_hash_table(p) \
1892 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
1893 == ARC_ELF_DATA ? ((struct elf_arc_link_hash_table *) ((p)->hash)) : NULL)
1894
886a2506 1895static bfd_boolean
08759e0f 1896elf_arc_check_relocs (bfd * abfd,
886a2506 1897 struct bfd_link_info * info,
34e967a5 1898 asection * sec,
886a2506
NC		 1899 const Elf_Internal_Rela * relocs)
1900{
34e967a5
MC		 1901 Elf_Internal_Shdr * symtab_hdr;
1902 struct elf_link_hash_entry ** sym_hashes;
34e967a5
MC		 1903 const Elf_Internal_Rela * rel;
1904 const Elf_Internal_Rela * rel_end;
1905 bfd * dynobj;
1906 asection * sreloc = NULL;
34e967a5
MC		 1907
1908 if (bfd_link_relocatable (info))
1909 return TRUE;
886a2506
NC		 1910
1911 dynobj = (elf_hash_table (info))->dynobj;
1912 symtab_hdr = &((elf_tdata (abfd))->symtab_hdr);
1913 sym_hashes = elf_sym_hashes (abfd);
886a2506
NC		 1914
1915 rel_end = relocs + sec->reloc_count;
1916 for (rel = relocs; rel < rel_end; rel++)
1917 {
1918 enum elf_arc_reloc_type r_type;
1919 reloc_howto_type *howto;
1920 unsigned long r_symndx;
1921 struct elf_link_hash_entry *h;
1922
1923 r_type = ELF32_R_TYPE (rel->r_info);
1924
1925 if (r_type >= (int) R_ARC_max)
1926 {
1927 bfd_set_error (bfd_error_bad_value);
1928 return FALSE;
1929 }
3c8adaca 1930 howto = arc_elf_howto (r_type);
34e967a5
MC		 1931
1932 if (dynobj == NULL
535b785f
AM		 1933 && (is_reloc_for_GOT (howto)
1934 || is_reloc_for_TLS (howto)))
34e967a5
MC		 1935 {
1936 dynobj = elf_hash_table (info)->dynobj = abfd;
1937 if (! _bfd_elf_create_got_section (abfd, info))
1938 return FALSE;
1939 }
886a2506
NC		 1940
1941 /* Load symbol information. */
1942 r_symndx = ELF32_R_SYM (rel->r_info);
1943 if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */
1944 h = NULL;
1945 else /* Global one. */
1946 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1947
34e967a5
MC		 1948 switch (r_type)
1949 {
1950 case R_ARC_32:
1951 case R_ARC_32_ME:
1952 /* During shared library creation, these relocs should not
1953 appear in a shared library (as memory will be read only
1954 and the dynamic linker can not resolve these. However
1955 the error should not occur for e.g. debugging or
1956 non-readonly sections. */
9d5c718b
CM		 1957 if (h != NULL
1958 && (bfd_link_dll (info) && !bfd_link_pie (info))
34e967a5 1959 && (sec->flags & SEC_ALLOC) != 0
3c8adaca
CZ		 1960 && (sec->flags & SEC_READONLY) != 0
1961 && ((sec->flags & SEC_CODE) != 0
1962 || (sec->flags & SEC_DEBUGGING) != 0))
34e967a5
MC		 1963 {
1964 const char *name;
1965 if (h)
1966 name = h->root.root.string;
1967 else
1968 /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */
1969 name = "UNKNOWN";
4eca0228 1970 _bfd_error_handler
695344c0 1971 /* xgettext:c-format */
34e967a5
MC		 1972 (_("\
1973%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
1974 abfd,
1975 arc_elf_howto (r_type)->name,
1976 name);
1977 bfd_set_error (bfd_error_bad_value);
1978 return FALSE;
1979 }
1980
1981 /* In some cases we are not setting the 'non_got_ref'
1982 flag, even though the relocations don't require a GOT
1983 access. We should extend the testing in this area to
1984 ensure that no significant cases are being missed. */
1985 if (h)
1986 h->non_got_ref = 1;
1987 /* FALLTHROUGH */
1988 case R_ARC_PC32:
1989 case R_ARC_32_PCREL:
8a36df4d 1990 if ((bfd_link_pic (info))
34e967a5
MC		 1991 && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
1992 || (h != NULL
34e967a5
MC		 1993 && (!info->symbolic || !h->def_regular))))
1994 {
1995 if (sreloc == NULL)
1996 {
1997 sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
1998 2, abfd,
1999 /*rela*/
2000 TRUE);
2001
2002 if (sreloc == NULL)
2003 return FALSE;
2004 }
2005 sreloc->size += sizeof (Elf32_External_Rela);
2006
2007 }
2008 default:
2009 break;
2010 }
2011
535b785f 2012 if (is_reloc_for_PLT (howto))
886a2506
NC		 2013 {
2014 if (h == NULL)
2015 continue;
2016 else
2017 h->needs_plt = 1;
2018 }
2019
08759e0f 2020 /* Add info to the symbol got_entry_list. */
535b785f
AM		 2021 if (is_reloc_for_GOT (howto)
2022 || is_reloc_for_TLS (howto))
34e967a5 2023 {
08759e0f
CM		 2024 arc_fill_got_info_for_reloc (
2025 arc_got_entry_type_for_reloc (howto),
2026 get_got_entry_list_for_symbol (abfd, r_symndx, h),
2027 info,
2028 h);
34e967a5
MC		 2029 }
2030 }
886a2506 2031
34e967a5
MC		 2032 return TRUE;
2033}
886a2506 2034
34e967a5 2035#define ELF_DYNAMIC_INTERPRETER "/sbin/ld-uClibc.so"
886a2506 2036
34e967a5
MC		 2037static struct plt_version_t *
2038arc_get_plt_version (struct bfd_link_info *info)
886a2506 2039{
34e967a5 2040 int i;
886a2506 2041
34e967a5
MC		 2042 for (i = 0; i < 1; i++)
2043 {
2044 ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i,
f7e8b360
NC		 2045 (int) plt_versions[i].entry_size,
2046 (int) plt_versions[i].elem_size);
34e967a5 2047 }
886a2506 2048
34e967a5 2049 if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2)
886a2506 2050 {
34e967a5
MC		 2051 if (bfd_link_pic (info))
2052 return &(plt_versions[ELF_ARCV2_PIC]);
2053 else
2054 return &(plt_versions[ELF_ARCV2_ABS]);
2055 }
2056 else
886a2506 2057 {
34e967a5
MC		 2058 if (bfd_link_pic (info))
2059 return &(plt_versions[ELF_ARC_PIC]);
2060 else
2061 return &(plt_versions[ELF_ARC_ABS]);
886a2506 2062 }
886a2506
NC		 2063}
2064
2065static bfd_vma
2066add_symbol_to_plt (struct bfd_link_info *info)
2067{
34e967a5 2068 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506
NC		 2069 bfd_vma ret;
2070
34e967a5 2071 struct plt_version_t *plt_data = arc_get_plt_version (info);
886a2506 2072
34e967a5
MC		 2073 /* If this is the first .plt entry, make room for the special first
2074 entry. */
2075 if (htab->splt->size == 0)
2076 htab->splt->size += plt_data->entry_size;
886a2506 2077
34e967a5
MC		 2078 ret = htab->splt->size;
2079
2080 htab->splt->size += plt_data->elem_size;
f7e8b360 2081 ARC_DEBUG ("PLT_SIZE = %d\n", (int) htab->splt->size);
34e967a5
MC		 2082
2083 htab->sgotplt->size += 4;
2084 htab->srelplt->size += sizeof (Elf32_External_Rela);
886a2506
NC		 2085
2086 return ret;
2087}
2088
34e967a5
MC		 2089#define PLT_DO_RELOCS_FOR_ENTRY(ABFD, DS, RELOCS) \
2090 plt_do_relocs_for_symbol (ABFD, DS, RELOCS, 0, 0)
886a2506
NC		 2091
2092static void
34e967a5
MC		 2093plt_do_relocs_for_symbol (bfd *abfd,
2094 struct elf_link_hash_table *htab,
2095 const struct plt_reloc *reloc,
886a2506
NC		 2096 bfd_vma plt_offset,
2097 bfd_vma symbol_got_offset)
2098{
2099 while (SYM_ONLY (reloc->symbol) != LAST_RELOC)
2100 {
2101 bfd_vma relocation = 0;
2102
2103 switch (SYM_ONLY (reloc->symbol))
2104 {
2105 case SGOT:
08759e0f
CM		 2106 relocation
2107 = htab->sgotplt->output_section->vma
2108 + htab->sgotplt->output_offset + symbol_got_offset;
886a2506
NC		 2109 break;
2110 }
2111 relocation += reloc->addend;
2112
34e967a5
MC		 2113 if (IS_RELATIVE (reloc->symbol))
2114 {
2115 bfd_vma reloc_offset = reloc->offset;
2116 reloc_offset -= (IS_INSN_32 (reloc->symbol)) ? 4 : 0;
2117 reloc_offset -= (IS_INSN_24 (reloc->symbol)) ? 2 : 0;
886a2506 2118
34e967a5
MC		 2119 relocation -= htab->splt->output_section->vma
2120 + htab->splt->output_offset
2121 + plt_offset + reloc_offset;
2122 }
2123
2124 /* TODO: being ME is not a property of the relocation but of the
2125 section of which is applying the relocation. */
1e5885b7 2126 if (IS_MIDDLE_ENDIAN (reloc->symbol) && !bfd_big_endian (abfd))
886a2506 2127 {
08759e0f
CM		 2128 relocation
2129 = ((relocation & 0xffff0000) >> 16)
2130 | ((relocation & 0xffff) << 16);
886a2506
NC		 2131 }
2132
2133 switch (reloc->size)
2134 {
2135 case 32:
34e967a5 2136 bfd_put_32 (htab->splt->output_section->owner,
886a2506 2137 relocation,
34e967a5 2138 htab->splt->contents + plt_offset + reloc->offset);
886a2506
NC		 2139 break;
2140 }
2141
34e967a5 2142 reloc = &(reloc[1]); /* Jump to next relocation. */
886a2506
NC		 2143 }
2144}
2145
2146static void
34e967a5
MC		 2147relocate_plt_for_symbol (bfd *output_bfd,
2148 struct bfd_link_info *info,
886a2506
NC		 2149 struct elf_link_hash_entry *h)
2150{
34e967a5
MC		 2151 struct plt_version_t *plt_data = arc_get_plt_version (info);
2152 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2153
34e967a5
MC		 2154 bfd_vma plt_index = (h->plt.offset - plt_data->entry_size)
2155 / plt_data->elem_size;
886a2506
NC		 2156 bfd_vma got_offset = (plt_index + 3) * 4;
2157
f7e8b360
NC		 2158 ARC_DEBUG ("arc_info: PLT_OFFSET = %#lx, PLT_ENTRY_VMA = %#lx, \
2159GOT_ENTRY_OFFSET = %#lx, GOT_ENTRY_VMA = %#lx, for symbol %s\n",
2160 (long) h->plt.offset,
2161 (long) (htab->splt->output_section->vma
2162 + htab->splt->output_offset
2163 + h->plt.offset),
2164 (long) got_offset,
2165 (long) (htab->sgotplt->output_section->vma
2166 + htab->sgotplt->output_offset
2167 + got_offset),
34e967a5
MC		 2168 h->root.root.string);
2169
1e5885b7
CZ		 2170 {
2171 bfd_vma i = 0;
2172 uint16_t *ptr = (uint16_t *) plt_data->elem;
f7e8b360 2173
1e5885b7
CZ		 2174 for (i = 0; i < plt_data->elem_size/2; i++)
2175 {
2176 uint16_t data = ptr[i];
2177 bfd_put_16 (output_bfd,
2178 (bfd_vma) data,
2179 htab->splt->contents + h->plt.offset + (i*2));
2180 }
2181 }
2182
34e967a5
MC		 2183 plt_do_relocs_for_symbol (output_bfd, htab,
2184 plt_data->elem_relocs,
2185 h->plt.offset,
886a2506 2186 got_offset);
34e967a5
MC		 2187
2188 /* Fill in the entry in the global offset table. */
2189 bfd_put_32 (output_bfd,
2190 (bfd_vma) (htab->splt->output_section->vma
2191 + htab->splt->output_offset),
2192 htab->sgotplt->contents + got_offset);
2193
2194 /* TODO: Fill in the entry in the .rela.plt section. */
2195 {
2196 Elf_Internal_Rela rel;
2197 bfd_byte *loc;
2198
2199 rel.r_offset = (htab->sgotplt->output_section->vma
2200 + htab->sgotplt->output_offset
2201 + got_offset);
2202 rel.r_addend = 0;
94e5c971
CZ		 2203
2204 BFD_ASSERT (h->dynindx != -1);
34e967a5
MC		 2205 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT);
2206
2207 loc = htab->srelplt->contents;
2208 loc += plt_index * sizeof (Elf32_External_Rela); /* relA */
2209 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
2210 }
886a2506
NC		 2211}
2212
2213static void
34e967a5
MC		 2214relocate_plt_for_entry (bfd *abfd,
2215 struct bfd_link_info *info)
886a2506 2216{
34e967a5
MC		 2217 struct plt_version_t *plt_data = arc_get_plt_version (info);
2218 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2219
1e5885b7
CZ		 2220 {
2221 bfd_vma i = 0;
2222 uint16_t *ptr = (uint16_t *) plt_data->entry;
2223 for (i = 0; i < plt_data->entry_size/2; i++)
2224 {
2225 uint16_t data = ptr[i];
2226 bfd_put_16 (abfd,
2227 (bfd_vma) data,
2228 htab->splt->contents + (i*2));
2229 }
2230 }
34e967a5 2231 PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs);
886a2506
NC		 2232}
2233
34e967a5
MC		 2234/* Desc : Adjust a symbol defined by a dynamic object and referenced
2235 by a regular object. The current definition is in some section of
2236 the dynamic object, but we're not including those sections. We
2237 have to change the definition to something the rest of the link can
886a2506
NC		 2238 understand. */
2239
2240static bfd_boolean
2241elf_arc_adjust_dynamic_symbol (struct bfd_link_info *info,
2242 struct elf_link_hash_entry *h)
2243{
34e967a5 2244 asection *s;
886a2506 2245 bfd *dynobj = (elf_hash_table (info))->dynobj;
34e967a5 2246 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2247
34e967a5
MC		 2248 if (h->type == STT_FUNC
2249 || h->type == STT_GNU_IFUNC
2250 || h->needs_plt == 1)
886a2506
NC		 2251 {
2252 if (!bfd_link_pic (info) && !h->def_dynamic && !h->ref_dynamic)
2253 {
2254 /* This case can occur if we saw a PLT32 reloc in an input
2255 file, but the symbol was never referred to by a dynamic
2256 object. In such a case, we don't actually need to build
2257 a procedure linkage table, and we can just do a PC32
2258 reloc instead. */
2259 BFD_ASSERT (h->needs_plt);
2260 return TRUE;
2261 }
2262
2263 /* Make sure this symbol is output as a dynamic symbol. */
2264 if (h->dynindx == -1 && !h->forced_local
2265 && !bfd_elf_link_record_dynamic_symbol (info, h))
2266 return FALSE;
2267
34e967a5
MC		 2268 if (bfd_link_pic (info)
2269 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
886a2506
NC		 2270 {
2271 bfd_vma loc = add_symbol_to_plt (info);
2272
08759e0f 2273 if (bfd_link_executable (info) && !h->def_regular)
886a2506 2274 {
34e967a5 2275 h->root.u.def.section = htab->splt;
886a2506
NC		 2276 h->root.u.def.value = loc;
2277 }
2278 h->plt.offset = loc;
2279 }
34e967a5
MC		 2280 else
2281 {
2282 h->plt.offset = (bfd_vma) -1;
2283 h->needs_plt = 0;
2284 }
2285 return TRUE;
886a2506 2286 }
34e967a5
MC		 2287
2288 /* If this is a weak symbol, and there is a real definition, the
2289 processor independent code will have arranged for us to see the
2290 real definition first, and we can just use the same value. */
2291 if (h->u.weakdef != NULL)
886a2506 2292 {
34e967a5
MC		 2293 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2294 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2295 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2296 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2297 return TRUE;
886a2506
NC		 2298 }
2299
34e967a5
MC		 2300 /* This is a reference to a symbol defined by a dynamic object which
2301 is not a function. */
2302
2303 /* If we are creating a shared library, we must presume that the
2304 only references to the symbol are via the global offset table.
2305 For such cases we need not do anything here; the relocations will
2306 be handled correctly by relocate_section. */
3c8adaca
CZ		 2307 if (!bfd_link_executable (info))
2308 return TRUE;
2309
2310 /* If there are no non-GOT references, we do not need a copy
2311 relocation. */
2312 if (!h->non_got_ref)
34e967a5
MC		 2313 return TRUE;
2314
3c8adaca
CZ		 2315 /* If -z nocopyreloc was given, we won't generate them either. */
2316 if (info->nocopyreloc)
2317 {
2318 h->non_got_ref = 0;
2319 return TRUE;
2320 }
2321
34e967a5
MC		 2322 /* We must allocate the symbol in our .dynbss section, which will
2323 become part of the .bss section of the executable. There will be
2324 an entry for this symbol in the .dynsym section. The dynamic
2325 object will contain position independent code, so all references
2326 from the dynamic object to this symbol will go through the global
2327 offset table. The dynamic linker will use the .dynsym entry to
2328 determine the address it must put in the global offset table, so
2329 both the dynamic object and the regular object will refer to the
2330 same memory location for the variable. */
2331
3c8adaca
CZ		 2332 if (htab == NULL)
2333 return FALSE;
34e967a5
MC		 2334
2335 /* We must generate a R_ARC_COPY reloc to tell the dynamic linker to
2336 copy the initial value out of the dynamic object and into the
2337 runtime process image. We need to remember the offset into the
2338 .rela.bss section we are going to use. */
2339 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2340 {
8a36df4d 2341 struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
34e967a5 2342
9d19e4fd
AM		 2343 BFD_ASSERT (arc_htab->elf.srelbss != NULL);
2344 arc_htab->elf.srelbss->size += sizeof (Elf32_External_Rela);
34e967a5
MC		 2345 h->needs_copy = 1;
2346 }
2347
8a36df4d 2348 /* TODO: Move this also to arc_hash_table. */
3c8adaca
CZ		 2349 s = bfd_get_section_by_name (dynobj, ".dynbss");
2350 BFD_ASSERT (s != NULL);
34e967a5 2351
3c8adaca 2352 return _bfd_elf_adjust_dynamic_copy (info, h, s);
886a2506
NC		 2353}
2354
2355/* Function : elf_arc_finish_dynamic_symbol
2356 Brief : Finish up dynamic symbol handling. We set the
34e967a5 2357 contents of various dynamic sections here.
886a2506 2358 Args : output_bfd :
34e967a5
MC		 2359 info :
2360 h :
2361 sym :
886a2506 2362 Returns : True/False as the return status. */
34e967a5 2363
886a2506
NC		 2364static bfd_boolean
2365elf_arc_finish_dynamic_symbol (bfd * output_bfd,
2366 struct bfd_link_info *info,
2367 struct elf_link_hash_entry *h,
2368 Elf_Internal_Sym * sym)
2369{
34e967a5 2370 if (h->plt.offset != (bfd_vma) -1)
886a2506 2371 {
34e967a5
MC		 2372 relocate_plt_for_symbol (output_bfd, info, h);
2373
2374 if (!h->def_regular)
886a2506 2375 {
34e967a5
MC		 2376 /* Mark the symbol as undefined, rather than as defined in
2377 the .plt section. Leave the value alone. */
2378 sym->st_shndx = SHN_UNDEF;
886a2506 2379 }
34e967a5
MC		 2380 }
2381
34e967a5 2382
08759e0f
CM		 2383 /* This function traverses list of GOT entries and
2384 create respective dynamic relocs. */
2385 /* TODO: Make function to get list and not access the list directly. */
2386 /* TODO: Move function to relocate_section create this relocs eagerly. */
2387 create_got_dynrelocs_for_got_info (&h->got.glist,
2388 output_bfd,
2389 info,
2390 h);
34e967a5
MC		 2391
2392 if (h->needs_copy)
2393 {
8a36df4d
CM		 2394 struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
2395
2396 if (h->dynindx == -1
2397 || (h->root.type != bfd_link_hash_defined
2398 && h->root.type != bfd_link_hash_defweak)
9d19e4fd 2399 || arc_htab->elf.srelbss == NULL)
8a36df4d
CM		 2400 abort ();
2401
34e967a5
MC		 2402 bfd_vma rel_offset = (h->root.u.def.value
2403 + h->root.u.def.section->output_section->vma
2404 + h->root.u.def.section->output_offset);
2405
9d19e4fd
AM		 2406 bfd_byte * loc = arc_htab->elf.srelbss->contents
2407 + (arc_htab->elf.srelbss->reloc_count * sizeof (Elf32_External_Rela));
2408 arc_htab->elf.srelbss->reloc_count++;
34e967a5
MC		 2409
2410 Elf_Internal_Rela rel;
2411 rel.r_addend = 0;
2412 rel.r_offset = rel_offset;
94e5c971
CZ		 2413
2414 BFD_ASSERT (h->dynindx != -1);
34e967a5
MC		 2415 rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY);
2416
23a42089 2417 bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
886a2506
NC		 2418 }
2419
2420 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2421 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2422 || strcmp (h->root.root.string, "__DYNAMIC") == 0
2423 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2424 sym->st_shndx = SHN_ABS;
2425
2426 return TRUE;
2427}
2428
4ade44b7 2429#define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION) \
34e967a5
MC		 2430 case TAG: \
2431 if (SYMBOL != NULL) \
4ade44b7
AM		 2432 h = elf_link_hash_lookup (elf_hash_table (info), \
2433 SYMBOL, FALSE, FALSE, TRUE); \
34e967a5 2434 else if (SECTION != NULL) \
4ade44b7 2435 s = bfd_get_linker_section (dynobj, SECTION); \
34e967a5 2436 break;
886a2506
NC		 2437
2438/* Function : elf_arc_finish_dynamic_sections
2439 Brief : Finish up the dynamic sections handling.
2440 Args : output_bfd :
34e967a5
MC		 2441 info :
2442 h :
2443 sym :
886a2506 2444 Returns : True/False as the return status. */
34e967a5 2445
886a2506 2446static bfd_boolean
34e967a5
MC		 2447elf_arc_finish_dynamic_sections (bfd * output_bfd,
2448 struct bfd_link_info *info)
886a2506 2449{
34e967a5 2450 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2451 bfd *dynobj = (elf_hash_table (info))->dynobj;
034fed0b 2452 asection *sdyn = bfd_get_linker_section (dynobj, ".dynamic");
886a2506 2453
034fed0b 2454 if (sdyn)
886a2506
NC		 2455 {
2456 Elf32_External_Dyn *dyncon, *dynconend;
2457
034fed0b 2458 dyncon = (Elf32_External_Dyn *) sdyn->contents;
08759e0f 2459 dynconend
034fed0b 2460 = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
886a2506
NC		 2461 for (; dyncon < dynconend; dyncon++)
2462 {
2463 Elf_Internal_Dyn internal_dyn;
2464 bfd_boolean do_it = FALSE;
2465
2466 struct elf_link_hash_entry *h = NULL;
2467 asection *s = NULL;
2468
2469 bfd_elf32_swap_dyn_in (dynobj, dyncon, &internal_dyn);
2470
2471 switch (internal_dyn.d_tag)
2472 {
65b94e90
CM		 2473 GET_SYMBOL_OR_SECTION (DT_INIT, info->init_function, NULL)
2474 GET_SYMBOL_OR_SECTION (DT_FINI, info->fini_function, NULL)
4ade44b7
AM		 2475 GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt")
2476 GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt")
2477 GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt")
4ade44b7
AM		 2478 GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version")
2479 GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d")
2480 GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r")
886a2506
NC		 2481 default:
2482 break;
2483 }
2484
34e967a5 2485 /* In case the dynamic symbols should be updated with a symbol. */
886a2506
NC		 2486 if (h != NULL
2487 && (h->root.type == bfd_link_hash_defined
34e967a5 2488 || h->root.type == bfd_link_hash_defweak))
886a2506
NC		 2489 {
2490 asection *asec_ptr;
2491
2492 internal_dyn.d_un.d_val = h->root.u.def.value;
2493 asec_ptr = h->root.u.def.section;
2494 if (asec_ptr->output_section != NULL)
2495 {
2496 internal_dyn.d_un.d_val +=
08759e0f
CM		 2497 (asec_ptr->output_section->vma
2498 + asec_ptr->output_offset);
886a2506
NC		 2499 }
2500 else
2501 {
34e967a5
MC		 2502 /* The symbol is imported from another shared
2503 library and does not apply to this one. */
886a2506
NC		 2504 internal_dyn.d_un.d_val = 0;
2505 }
2506 do_it = TRUE;
2507 }
2508 else if (s != NULL) /* With a section information. */
2509 {
2510 switch (internal_dyn.d_tag)
2511 {
2512 case DT_PLTGOT:
2513 case DT_JMPREL:
34e967a5
MC		 2514 case DT_VERSYM:
2515 case DT_VERDEF:
2516 case DT_VERNEED:
4ade44b7
AM		 2517 internal_dyn.d_un.d_ptr = (s->output_section->vma
2518 + s->output_offset);
886a2506
NC		 2519 do_it = TRUE;
2520 break;
2521
2522 case DT_PLTRELSZ:
2523 internal_dyn.d_un.d_val = s->size;
2524 do_it = TRUE;
2525 break;
2526
886a2506
NC		 2527 default:
2528 break;
2529 }
2530 }
2531
4ade44b7 2532 if (do_it)
886a2506
NC		 2533 bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon);
2534 }
2535
34e967a5 2536 if (htab->splt->size > 0)
886a2506 2537 {
34e967a5 2538 relocate_plt_for_entry (output_bfd, info);
886a2506
NC		 2539 }
2540
34e967a5 2541 /* TODO: Validate this. */
034fed0b
AM		 2542 if (htab->srelplt->output_section != bfd_abs_section_ptr)
2543 elf_section_data (htab->srelplt->output_section)
2544 ->this_hdr.sh_entsize = 12;
886a2506
NC		 2545 }
2546
2547 /* Fill in the first three entries in the global offset table. */
34e967a5 2548 if (htab->sgot)
886a2506 2549 {
3b63d2ce
CM		 2550 struct elf_link_hash_entry *h;
2551 h = elf_link_hash_lookup (elf_hash_table (info), "_GLOBAL_OFFSET_TABLE_",
2552 FALSE, FALSE, TRUE);
2553
2554 if (h != NULL && h->root.type != bfd_link_hash_undefined
2555 && h->root.u.def.section != NULL)
886a2506 2556 {
3b63d2ce
CM		 2557 asection *sec = h->root.u.def.section;
2558
034fed0b 2559 if (sdyn == NULL)
886a2506 2560 bfd_put_32 (output_bfd, (bfd_vma) 0,
3b63d2ce 2561 sec->contents);
886a2506
NC		 2562 else
2563 bfd_put_32 (output_bfd,
034fed0b 2564 sdyn->output_section->vma + sdyn->output_offset,
3b63d2ce
CM		 2565 sec->contents);
2566 bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 4);
2567 bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 8);
886a2506
NC		 2568 }
2569 }
2570
886a2506
NC		 2571 return TRUE;
2572}
2573
34e967a5
MC		 2574#define ADD_DYNAMIC_SYMBOL(NAME, TAG) \
2575 h = elf_link_hash_lookup (elf_hash_table (info), \
2576 NAME, FALSE, FALSE, FALSE); \
2577 if ((h != NULL && (h->ref_regular || h->def_regular))) \
2578 if (! _bfd_elf_add_dynamic_entry (info, TAG, 0)) \
886a2506
NC		 2579 return FALSE;
2580
2581/* Set the sizes of the dynamic sections. */
2582static bfd_boolean
034fed0b 2583elf_arc_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
34e967a5 2584 struct bfd_link_info *info)
886a2506 2585{
034fed0b
AM		 2586 bfd *dynobj;
2587 asection *s;
2588 bfd_boolean relocs_exist = FALSE;
2589 bfd_boolean reltext_exist = FALSE;
34e967a5 2590 struct elf_link_hash_table *htab = elf_hash_table (info);
886a2506 2591
034fed0b 2592 dynobj = htab->dynobj;
886a2506
NC		 2593 BFD_ASSERT (dynobj != NULL);
2594
034fed0b 2595 if (htab->dynamic_sections_created)
886a2506
NC		 2596 {
2597 struct elf_link_hash_entry *h;
2598
34e967a5
MC		 2599 /* Set the contents of the .interp section to the
2600 interpreter. */
034fed0b 2601 if (bfd_link_executable (info) && !info->nointerp)
886a2506
NC		 2602 {
2603 s = bfd_get_section_by_name (dynobj, ".interp");
2604 BFD_ASSERT (s != NULL);
34e967a5 2605 s->size = sizeof (ELF_DYNAMIC_INTERPRETER);
886a2506
NC		 2606 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2607 }
2608
34e967a5
MC		 2609 /* Add some entries to the .dynamic section. We fill in some of
2610 the values later, in elf_bfd_final_link, but we must add the
2611 entries now so that we know the final size of the .dynamic
2612 section. Checking if the .init section is present. We also
2613 create DT_INIT and DT_FINI entries if the init_str has been
2614 changed by the user. */
65b94e90
CM		 2615 ADD_DYNAMIC_SYMBOL (info->init_function, DT_INIT);
2616 ADD_DYNAMIC_SYMBOL (info->fini_function, DT_FINI);
886a2506
NC		 2617 }
2618 else
2619 {
34e967a5
MC		 2620 /* We may have created entries in the .rela.got section.
2621 However, if we are not creating the dynamic sections, we will
2622 not actually use these entries. Reset the size of .rela.got,
2623 which will cause it to get stripped from the output file
2624 below. */
2625 if (htab->srelgot != NULL)
2626 htab->srelgot->size = 0;
886a2506
NC		 2627 }
2628
2629 for (s = dynobj->sections; s != NULL; s = s->next)
2630 {
34e967a5 2631 if ((s->flags & SEC_LINKER_CREATED) == 0)
886a2506
NC		 2632 continue;
2633
034fed0b
AM		 2634 if (s == htab->splt
2635 || s == htab->sgot
2636 || s == htab->sgotplt
2637 || s == htab->sdynbss)
886a2506 2638 {
034fed0b
AM		 2639 /* Strip this section if we don't need it. */
2640 }
2641 else if (strncmp (s->name, ".rela", 5) == 0)
2642 {
2643 if (s->size != 0 && s != htab->srelplt)
34e967a5 2644 {
034fed0b 2645 if (!reltext_exist)
34e967a5 2646 {
034fed0b
AM		 2647 const char *name = s->name + 5;
2648 bfd *ibfd;
2649 for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
64aa8e03
CM		 2650 if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour
2651 && ibfd->flags & DYNAMIC)
034fed0b
AM		 2652 {
2653 asection *target = bfd_get_section_by_name (ibfd, name);
2654 if (target != NULL
2655 && elf_section_data (target)->sreloc == s
2656 && ((target->output_section->flags
2657 & (SEC_READONLY | SEC_ALLOC))
2658 == (SEC_READONLY | SEC_ALLOC)))
2659 {
2660 reltext_exist = TRUE;
2661 break;
2662 }
2663 }
34e967a5 2664 }
034fed0b 2665 relocs_exist = TRUE;
34e967a5 2666 }
886a2506 2667
34e967a5
MC		 2668 /* We use the reloc_count field as a counter if we need to
2669 copy relocs into the output file. */
2670 s->reloc_count = 0;
886a2506 2671 }
034fed0b
AM		 2672 else
2673 {
2674 /* It's not one of our sections, so don't allocate space. */
2675 continue;
2676 }
34e967a5 2677
034fed0b
AM		 2678 if (s->size == 0)
2679 {
2680 s->flags |= SEC_EXCLUDE;
2681 continue;
2682 }
34e967a5 2683
034fed0b
AM		 2684 if ((s->flags & SEC_HAS_CONTENTS) == 0)
2685 continue;
34e967a5 2686
034fed0b
AM		 2687 /* Allocate memory for the section contents. */
2688 s->contents = bfd_zalloc (dynobj, s->size);
2689 if (s->contents == NULL)
34e967a5 2690 return FALSE;
886a2506
NC		 2691 }
2692
034fed0b 2693 if (htab->dynamic_sections_created)
886a2506 2694 {
34e967a5
MC		 2695 /* TODO: Check if this is needed. */
2696 if (!bfd_link_pic (info))
2697 if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0))
2698 return FALSE;
2699
2700 if (htab->splt && (htab->splt->flags & SEC_EXCLUDE) == 0)
886a2506
NC		 2701 if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
2702 || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
2703 || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
034fed0b 2704 || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
886a2506
NC		 2705 return FALSE;
2706
034fed0b 2707 if (relocs_exist)
886a2506
NC		 2708 if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
2709 || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
2ab2f40d 2710 || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
034fed0b 2711 sizeof (Elf32_External_Rela)))
886a2506
NC		 2712 return FALSE;
2713
034fed0b 2714 if (reltext_exist)
886a2506
NC		 2715 if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
2716 return FALSE;
2717 }
2718
2719 return TRUE;
2720}
2721
0f7f3789
CM		 2722
2723/* Classify dynamic relocs such that -z combreloc can reorder and combine
2724 them. */
2725static enum elf_reloc_type_class
2726elf32_arc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
2727 const asection *rel_sec ATTRIBUTE_UNUSED,
2728 const Elf_Internal_Rela *rela)
2729{
2730 switch ((int) ELF32_R_TYPE (rela->r_info))
2731 {
2732 case R_ARC_RELATIVE:
2733 return reloc_class_relative;
2734 case R_ARC_JMP_SLOT:
2735 return reloc_class_plt;
2736 case R_ARC_COPY:
2737 return reloc_class_copy;
2738 /* TODO: Needed in future to support ifunc. */
2739 /*
2740 case R_ARC_IRELATIVE:
2741 return reloc_class_ifunc;
2742 */
2743 default:
2744 return reloc_class_normal;
2745 }
2746}
2747
34e967a5
MC		 2748const struct elf_size_info arc_elf32_size_info =
2749{
2750 sizeof (Elf32_External_Ehdr),
2751 sizeof (Elf32_External_Phdr),
2752 sizeof (Elf32_External_Shdr),
2753 sizeof (Elf32_External_Rel),
2754 sizeof (Elf32_External_Rela),
2755 sizeof (Elf32_External_Sym),
2756 sizeof (Elf32_External_Dyn),
2757 sizeof (Elf_External_Note),
2758 4,
2759 1,
2760 32, 2,
2761 ELFCLASS32, EV_CURRENT,
2762 bfd_elf32_write_out_phdrs,
2763 bfd_elf32_write_shdrs_and_ehdr,
2764 bfd_elf32_checksum_contents,
2765 bfd_elf32_write_relocs,
2766 bfd_elf32_swap_symbol_in,
2767 bfd_elf32_swap_symbol_out,
2768 bfd_elf32_slurp_reloc_table,
2769 bfd_elf32_slurp_symbol_table,
2770 bfd_elf32_swap_dyn_in,
2771 bfd_elf32_swap_dyn_out,
2772 bfd_elf32_swap_reloc_in,
2773 bfd_elf32_swap_reloc_out,
2774 bfd_elf32_swap_reloca_in,
2775 bfd_elf32_swap_reloca_out
2776};
2777
2778#define elf_backend_size_info arc_elf32_size_info
2779
34e967a5
MC		 2780/* Hook called by the linker routine which adds symbols from an object
2781 file. */
2782
2783static bfd_boolean
2784elf_arc_add_symbol_hook (bfd * abfd,
2785 struct bfd_link_info * info,
2786 Elf_Internal_Sym * sym,
2787 const char ** namep ATTRIBUTE_UNUSED,
2788 flagword * flagsp ATTRIBUTE_UNUSED,
2789 asection ** secp ATTRIBUTE_UNUSED,
2790 bfd_vma * valp ATTRIBUTE_UNUSED)
2791{
a43942db 2792 if (ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
34e967a5
MC		 2793 && (abfd->flags & DYNAMIC) == 0
2794 && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
a43942db 2795 elf_tdata (info->output_bfd)->has_gnu_symbols |= elf_gnu_symbol_ifunc;
34e967a5
MC		 2796
2797 return TRUE;
2798}
886a2506 2799
47f7f636
AK		 2800/* GDB expects general purpose registers to be in section .reg. However Linux
2801 kernel doesn't create this section and instead writes registers to NOTE
2802 section. It is up to the binutils to create a pseudo-section .reg from the
2803 contents of NOTE. Also BFD will read pid and signal number from NOTE. This
2804 function relies on offsets inside elf_prstatus structure in Linux to be
2805 stable. */
2806
2807static bfd_boolean
2808elf32_arc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2809{
2810 int offset;
2811 size_t size;
2812
2813 switch (note->descsz)
2814 {
2815 default:
2816 return FALSE;
2817
2818 case 236: /* sizeof (struct elf_prstatus) on Linux/arc. */
2819 /* pr_cursig */
2820 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2821 /* pr_pid */
2822 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2823 /* pr_regs */
2824 offset = 72;
2825 size = (40 * 4); /* There are 40 registers in user_regs_struct. */
2826 break;
2827 }
2828 /* Make a ".reg/999" section. */
2829 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
2830 note->descpos + offset);
2831}
2832
53a346d8
CZ		 2833/* Determine whether an object attribute tag takes an integer, a
2834 string or both. */
2835
2836static int
2837elf32_arc_obj_attrs_arg_type (int tag)
2838{
2839 if (tag == Tag_ARC_CPU_name
2840 || tag == Tag_ARC_ISA_config
2841 || tag == Tag_ARC_ISA_apex)
2842 return ATTR_TYPE_FLAG_STR_VAL;
2843 else if (tag < (Tag_ARC_ISA_mpy_option + 1))
2844 return ATTR_TYPE_FLAG_INT_VAL;
2845 else
2846 return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
2847}
2848
2849/* Attribute numbers >=14 can be safely ignored. */
2850
2851static bfd_boolean
2852elf32_arc_obj_attrs_handle_unknown (bfd *abfd, int tag)
2853{
2854 if ((tag & 127) < (Tag_ARC_ISA_mpy_option + 1))
2855 {
2856 _bfd_error_handler
2857 (_("%B: Unknown mandatory ARC object attribute %d."),
2858 abfd, tag);
2859 bfd_set_error (bfd_error_bad_value);
2860 return FALSE;
2861 }
2862 else
2863 {
2864 _bfd_error_handler
2865 (_("Warning: %B: Unknown ARC object attribute %d."),
2866 abfd, tag);
2867 return TRUE;
2868 }
2869}
2870
2871/* Handle an ARC specific section when reading an object file. This is
2872 called when bfd_section_from_shdr finds a section with an unknown
2873 type. */
2874
2875static bfd_boolean
2876elf32_arc_section_from_shdr (bfd *abfd,
2877 Elf_Internal_Shdr * hdr,
2878 const char *name,
2879 int shindex)
2880{
2881 switch (hdr->sh_type)
2882 {
2883 case SHT_ARC_ATTRIBUTES:
2884 break;
2885
2886 default:
2887 return FALSE;
2888 }
2889
2890 if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
2891 return FALSE;
2892
2893 return TRUE;
2894}
2895
6d00b590 2896#define TARGET_LITTLE_SYM arc_elf32_le_vec
47b0e7ad 2897#define TARGET_LITTLE_NAME "elf32-littlearc"
886a2506
NC		 2898#define TARGET_BIG_SYM arc_elf32_be_vec
2899#define TARGET_BIG_NAME "elf32-bigarc"
2900#define ELF_ARCH bfd_arch_arc
8a36df4d 2901#define ELF_TARGET_ID ARC_ELF_DATA
886a2506
NC		 2902#define ELF_MACHINE_CODE EM_ARC_COMPACT
2903#define ELF_MACHINE_ALT1 EM_ARC_COMPACT2
2904#define ELF_MAXPAGESIZE 0x2000
2905
34e967a5
MC		 2906#define bfd_elf32_bfd_link_hash_table_create arc_elf_link_hash_table_create
2907
2908#define bfd_elf32_bfd_merge_private_bfd_data arc_elf_merge_private_bfd_data
2909#define bfd_elf32_bfd_reloc_type_lookup arc_elf32_bfd_reloc_type_lookup
2910#define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags
2911#define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data
2912#define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data
2913
886a2506
NC		 2914#define elf_info_to_howto_rel arc_info_to_howto_rel
2915#define elf_backend_object_p arc_elf_object_p
2916#define elf_backend_final_write_processing arc_elf_final_write_processing
2917
2918#define elf_backend_relocate_section elf_arc_relocate_section
2919#define elf_backend_check_relocs elf_arc_check_relocs
9d19e4fd 2920#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
886a2506 2921
0f7f3789
CM		 2922#define elf_backend_reloc_type_class elf32_arc_reloc_type_class
2923
886a2506
NC		 2924#define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol
2925#define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol
2926
2927#define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections
2928#define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections
08759e0f 2929#define elf_backend_add_symbol_hook elf_arc_add_symbol_hook
886a2506
NC		 2930
2931#define elf_backend_can_gc_sections 1
2932#define elf_backend_want_got_plt 1
2933#define elf_backend_plt_readonly 1
34e967a5 2934#define elf_backend_rela_plts_and_copies_p 1
886a2506
NC		 2935#define elf_backend_want_plt_sym 0
2936#define elf_backend_got_header_size 12
64f52338 2937#define elf_backend_dtrel_excludes_plt 1
886a2506
NC		 2938
2939#define elf_backend_may_use_rel_p 0
2940#define elf_backend_may_use_rela_p 1
2941#define elf_backend_default_use_rela_p 1
252b5132 2942
47f7f636
AK		 2943#define elf_backend_grok_prstatus elf32_arc_grok_prstatus
2944
3c8adaca
CZ		 2945#define elf_backend_default_execstack 0
2946
53a346d8
CZ		 2947#undef elf_backend_obj_attrs_vendor
2948#define elf_backend_obj_attrs_vendor "ARC"
2949#undef elf_backend_obj_attrs_section
2950#define elf_backend_obj_attrs_section ".ARC.attributes"
2951#undef elf_backend_obj_attrs_arg_type
2952#define elf_backend_obj_attrs_arg_type elf32_arc_obj_attrs_arg_type
2953#undef elf_backend_obj_attrs_section_type
2954#define elf_backend_obj_attrs_section_type SHT_ARC_ATTRIBUTES
2955#define elf_backend_obj_attrs_handle_unknown elf32_arc_obj_attrs_handle_unknown
2956
2957#define elf_backend_section_from_shdr elf32_arc_section_from_shdr
2958
252b5132 2959#include "elf32-target.h"
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