Commit | Line | Data |
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252b5132 | 1 | /* ARC-specific support for 32-bit ELF |
219d1afa | 2 | Copyright (C) 1994-2018 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 |
38 | static const char * | |
34e967a5 MC |
39 | name_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); \ | |
07d6d2b8 AM |
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); \ | |
be9e3704 | 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 | ||
81 | char * init_str = INIT_SYM_STRING; | |
82 | char * 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 | ||
89 | static ATTRIBUTE_UNUSED const char * | |
90 | reloc_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 | } | |
68d20676 | 101 | |
886a2506 | 102 | #undef ARC_RELOC_HOWTO |
252b5132 | 103 | |
252b5132 RH |
104 | /* Try to minimize the amount of space occupied by relocation tables |
105 | on the ROM (not that the ROM won't be swamped by other ELF overhead). */ | |
0d2bcfaf | 106 | |
886a2506 NC |
107 | #define USE_REL 1 |
108 | ||
109 | static ATTRIBUTE_UNUSED bfd_boolean | |
110 | is_reloc_PC_relative (reloc_howto_type *howto) | |
111 | { | |
112 | return (strstr (howto->name, "PC") != NULL) ? TRUE : FALSE; | |
113 | } | |
114 | ||
115 | static bfd_boolean | |
116 | is_reloc_SDA_relative (reloc_howto_type *howto) | |
117 | { | |
118 | return (strstr (howto->name, "SDA") != NULL) ? TRUE : FALSE; | |
119 | } | |
120 | ||
121 | static bfd_boolean | |
122 | is_reloc_for_GOT (reloc_howto_type * howto) | |
123 | { | |
34e967a5 MC |
124 | if (strstr (howto->name, "TLS") != NULL) |
125 | return FALSE; | |
886a2506 NC |
126 | return (strstr (howto->name, "GOT") != NULL) ? TRUE : FALSE; |
127 | } | |
128 | ||
129 | static bfd_boolean | |
130 | is_reloc_for_PLT (reloc_howto_type * howto) | |
131 | { | |
132 | return (strstr (howto->name, "PLT") != NULL) ? TRUE : FALSE; | |
133 | } | |
134 | ||
34e967a5 MC |
135 | static bfd_boolean |
136 | is_reloc_for_TLS (reloc_howto_type *howto) | |
137 | { | |
138 | return (strstr (howto->name, "TLS") != NULL) ? TRUE : FALSE; | |
139 | } | |
140 | ||
08759e0f CM |
141 | struct arc_relocation_data |
142 | { | |
143 | bfd_signed_vma reloc_offset; | |
144 | bfd_signed_vma reloc_addend; | |
145 | bfd_signed_vma got_offset_value; | |
146 | ||
147 | bfd_signed_vma sym_value; | |
148 | asection * sym_section; | |
149 | ||
150 | reloc_howto_type *howto; | |
151 | ||
152 | asection * input_section; | |
153 | ||
154 | bfd_signed_vma sdata_begin_symbol_vma; | |
155 | bfd_boolean sdata_begin_symbol_vma_set; | |
156 | bfd_signed_vma got_symbol_vma; | |
157 | ||
158 | bfd_boolean should_relocate; | |
159 | ||
160 | const char * symbol_name; | |
161 | }; | |
162 | ||
163 | /* Should be included at this location due to static declarations | |
68d20676 | 164 | defined before this point. */ |
08759e0f CM |
165 | #include "arc-got.h" |
166 | ||
886a2506 NC |
167 | #define arc_bfd_get_8(A,B,C) bfd_get_8(A,B) |
168 | #define arc_bfd_get_16(A,B,C) bfd_get_16(A,B) | |
72f3b6aa | 169 | #define arc_bfd_get_32(A,B,C) bfd_get_32(A,B) |
886a2506 NC |
170 | #define arc_bfd_put_8(A,B,C,D) bfd_put_8(A,B,C) |
171 | #define arc_bfd_put_16(A,B,C,D) bfd_put_16(A,B,C) | |
72f3b6aa | 172 | #define arc_bfd_put_32(A,B,C,D) bfd_put_32(A,B,C) |
886a2506 | 173 | |
252b5132 | 174 | |
47b0e7ad | 175 | static bfd_reloc_status_type |
886a2506 NC |
176 | arc_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
177 | arelent *reloc_entry, | |
178 | asymbol *symbol_in, | |
179 | void *data ATTRIBUTE_UNUSED, | |
180 | asection *input_section, | |
181 | bfd *output_bfd, | |
182 | char ** error_message ATTRIBUTE_UNUSED) | |
183 | { | |
184 | if (output_bfd != NULL) | |
185 | { | |
186 | reloc_entry->address += input_section->output_offset; | |
187 | ||
188 | /* In case of relocateable link and if the reloc is against a | |
189 | section symbol, the addend needs to be adjusted according to | |
190 | where the section symbol winds up in the output section. */ | |
191 | if ((symbol_in->flags & BSF_SECTION_SYM) && symbol_in->section) | |
192 | reloc_entry->addend += symbol_in->section->output_offset; | |
193 | ||
194 | return bfd_reloc_ok; | |
195 | } | |
196 | ||
197 | return bfd_reloc_continue; | |
198 | } | |
199 | ||
200 | ||
201 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
202 | TYPE = VALUE, | |
68d20676 | 203 | |
886a2506 NC |
204 | enum howto_list |
205 | { | |
206 | #include "elf/arc-reloc.def" | |
207 | HOWTO_LIST_LAST | |
208 | }; | |
68d20676 | 209 | |
886a2506 NC |
210 | #undef ARC_RELOC_HOWTO |
211 | ||
212 | #define ARC_RELOC_HOWTO(TYPE, VALUE, RSIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
f7e8b360 NC |
213 | [TYPE] = HOWTO (R_##TYPE, 0, RSIZE, BITSIZE, FALSE, 0, \ |
214 | complain_overflow_##OVERFLOW, arc_elf_reloc, \ | |
215 | "R_" #TYPE, FALSE, 0, 0, FALSE), | |
886a2506 NC |
216 | |
217 | static struct reloc_howto_struct elf_arc_howto_table[] = | |
218 | { | |
219 | #include "elf/arc-reloc.def" | |
34e967a5 MC |
220 | /* Example of what is generated by the preprocessor. Currently kept as an |
221 | example. | |
886a2506 NC |
222 | HOWTO (R_ARC_NONE, // Type. |
223 | 0, // Rightshift. | |
224 | 2, // Size (0 = byte, 1 = short, 2 = long). | |
225 | 32, // Bitsize. | |
226 | FALSE, // PC_relative. | |
227 | 0, // Bitpos. | |
228 | complain_overflow_bitfield, // Complain_on_overflow. | |
229 | bfd_elf_generic_reloc, // Special_function. | |
230 | "R_ARC_NONE", // Name. | |
231 | TRUE, // Partial_inplace. | |
232 | 0, // Src_mask. | |
233 | 0, // Dst_mask. | |
234 | FALSE), // PCrel_offset. | |
235 | */ | |
236 | }; | |
237 | #undef ARC_RELOC_HOWTO | |
238 | ||
68d20676 NC |
239 | static void |
240 | arc_elf_howto_init (void) | |
886a2506 NC |
241 | { |
242 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
68d20676 | 243 | elf_arc_howto_table[TYPE].pc_relative = \ |
0a5ff21b | 244 | (strstr (#FORMULA, " P ") != NULL || strstr (#FORMULA, " PDATA ") != NULL); \ |
68d20676 NC |
245 | elf_arc_howto_table[TYPE].dst_mask = RELOC_FUNCTION(0, ~0); \ |
246 | /* Only 32 bit data relocations should be marked as ME. */ \ | |
247 | if (strstr (#FORMULA, " ME ") != NULL) \ | |
248 | { \ | |
249 | BFD_ASSERT (SIZE == 2); \ | |
72f3b6aa | 250 | } |
886a2506 | 251 | |
34e967a5 | 252 | #include "elf/arc-reloc.def" |
72f3b6aa | 253 | |
47b0e7ad | 254 | } |
886a2506 | 255 | #undef ARC_RELOC_HOWTO |
47b0e7ad | 256 | |
886a2506 NC |
257 | |
258 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
259 | [TYPE] = VALUE, | |
68d20676 | 260 | |
886a2506 NC |
261 | const int howto_table_lookup[] = |
262 | { | |
34e967a5 | 263 | #include "elf/arc-reloc.def" |
252b5132 | 264 | }; |
68d20676 | 265 | |
886a2506 NC |
266 | #undef ARC_RELOC_HOWTO |
267 | ||
f26dd308 AM |
268 | static reloc_howto_type * |
269 | arc_elf_howto (unsigned int r_type) | |
270 | { | |
271 | if (elf_arc_howto_table[R_ARC_32].dst_mask == 0) | |
272 | arc_elf_howto_init (); | |
273 | return &elf_arc_howto_table[r_type]; | |
274 | } | |
252b5132 RH |
275 | |
276 | /* Map BFD reloc types to ARC ELF reloc types. */ | |
277 | ||
278 | struct arc_reloc_map | |
279 | { | |
34e967a5 | 280 | bfd_reloc_code_real_type bfd_reloc_val; |
08759e0f | 281 | unsigned char elf_reloc_val; |
252b5132 RH |
282 | }; |
283 | ||
8a36df4d CM |
284 | /* ARC ELF linker hash entry. */ |
285 | struct elf_arc_link_hash_entry | |
286 | { | |
287 | struct elf_link_hash_entry root; | |
288 | ||
289 | /* Track dynamic relocs copied for this symbol. */ | |
290 | struct elf_dyn_relocs *dyn_relocs; | |
291 | }; | |
292 | ||
293 | /* ARC ELF linker hash table. */ | |
294 | struct elf_arc_link_hash_table | |
295 | { | |
296 | struct elf_link_hash_table elf; | |
8a36df4d CM |
297 | }; |
298 | ||
299 | static struct bfd_hash_entry * | |
300 | elf_arc_link_hash_newfunc (struct bfd_hash_entry *entry, | |
301 | struct bfd_hash_table *table, | |
302 | const char *string) | |
303 | { | |
304 | /* Allocate the structure if it has not already been allocated by a | |
305 | subclass. */ | |
306 | if (entry == NULL) | |
307 | { | |
308 | entry = (struct bfd_hash_entry *) | |
309 | bfd_hash_allocate (table, | |
310 | sizeof (struct elf_arc_link_hash_entry)); | |
311 | if (entry == NULL) | |
312 | return entry; | |
313 | } | |
314 | ||
315 | /* Call the allocation method of the superclass. */ | |
316 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
317 | if (entry != NULL) | |
318 | { | |
319 | struct elf_arc_link_hash_entry *eh; | |
320 | ||
321 | eh = (struct elf_arc_link_hash_entry *) entry; | |
322 | eh->dyn_relocs = NULL; | |
323 | } | |
324 | ||
325 | return entry; | |
326 | } | |
327 | ||
328 | /* Destroy an ARC ELF linker hash table. */ | |
329 | static void | |
330 | elf_arc_link_hash_table_free (bfd *obfd) | |
331 | { | |
332 | _bfd_elf_link_hash_table_free (obfd); | |
333 | } | |
334 | ||
335 | /* Create an ARC ELF linker hash table. */ | |
336 | ||
337 | static struct bfd_link_hash_table * | |
338 | arc_elf_link_hash_table_create (bfd *abfd) | |
339 | { | |
340 | struct elf_arc_link_hash_table *ret; | |
341 | ||
342 | ret = (struct elf_arc_link_hash_table *) bfd_zmalloc (sizeof (*ret)); | |
343 | if (ret == NULL) | |
344 | return NULL; | |
345 | ||
346 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, | |
347 | elf_arc_link_hash_newfunc, | |
348 | sizeof (struct elf_arc_link_hash_entry), | |
349 | ARC_ELF_DATA)) | |
350 | { | |
351 | free (ret); | |
352 | return NULL; | |
353 | } | |
354 | ||
8a36df4d CM |
355 | ret->elf.init_got_refcount.refcount = 0; |
356 | ret->elf.init_got_refcount.glist = NULL; | |
357 | ret->elf.init_got_offset.offset = 0; | |
358 | ret->elf.init_got_offset.glist = NULL; | |
359 | ||
360 | ret->elf.root.hash_table_free = elf_arc_link_hash_table_free; | |
361 | ||
362 | return &ret->elf.root; | |
363 | } | |
364 | ||
886a2506 NC |
365 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
366 | { BFD_RELOC_##TYPE, R_##TYPE }, | |
68d20676 | 367 | |
252b5132 RH |
368 | static const struct arc_reloc_map arc_reloc_map[] = |
369 | { | |
34e967a5 MC |
370 | #include "elf/arc-reloc.def" |
371 | ||
886a2506 NC |
372 | {BFD_RELOC_NONE, R_ARC_NONE}, |
373 | {BFD_RELOC_8, R_ARC_8}, | |
374 | {BFD_RELOC_16, R_ARC_16}, | |
375 | {BFD_RELOC_24, R_ARC_24}, | |
376 | {BFD_RELOC_32, R_ARC_32}, | |
252b5132 | 377 | }; |
68d20676 | 378 | |
886a2506 | 379 | #undef ARC_RELOC_HOWTO |
252b5132 | 380 | |
094fb063 CZ |
381 | typedef ATTRIBUTE_UNUSED bfd_vma (*replace_func) (unsigned, int ATTRIBUTE_UNUSED); |
382 | ||
383 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
384 | case TYPE: \ | |
385 | func = (void *) RELOC_FUNCTION; \ | |
386 | break; | |
68d20676 | 387 | |
094fb063 CZ |
388 | static replace_func |
389 | get_replace_function (bfd *abfd, unsigned int r_type) | |
390 | { | |
391 | void *func = NULL; | |
392 | ||
393 | switch (r_type) | |
394 | { | |
395 | #include "elf/arc-reloc.def" | |
396 | } | |
397 | ||
398 | if (func == replace_bits24 && bfd_big_endian (abfd)) | |
68d20676 | 399 | func = replace_bits24_be; |
094fb063 CZ |
400 | |
401 | return (replace_func) func; | |
402 | } | |
403 | #undef ARC_RELOC_HOWTO | |
404 | ||
252b5132 | 405 | static reloc_howto_type * |
34e967a5 | 406 | arc_elf32_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
47b0e7ad | 407 | bfd_reloc_code_real_type code) |
252b5132 RH |
408 | { |
409 | unsigned int i; | |
410 | ||
ea04a8f6 | 411 | for (i = ARRAY_SIZE (arc_reloc_map); i--;) |
886a2506 NC |
412 | { |
413 | if (arc_reloc_map[i].bfd_reloc_val == code) | |
f26dd308 | 414 | return arc_elf_howto (arc_reloc_map[i].elf_reloc_val); |
886a2506 | 415 | } |
ea04a8f6 | 416 | |
252b5132 RH |
417 | return NULL; |
418 | } | |
419 | ||
34e967a5 MC |
420 | /* Function to set the ELF flag bits. */ |
421 | static bfd_boolean | |
422 | arc_elf_set_private_flags (bfd *abfd, flagword flags) | |
423 | { | |
424 | elf_elfheader (abfd)->e_flags = flags; | |
425 | elf_flags_init (abfd) = TRUE; | |
426 | return TRUE; | |
427 | } | |
428 | ||
429 | /* Print private flags. */ | |
430 | static bfd_boolean | |
431 | arc_elf_print_private_bfd_data (bfd *abfd, void * ptr) | |
432 | { | |
433 | FILE *file = (FILE *) ptr; | |
434 | flagword flags; | |
435 | ||
436 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
437 | ||
438 | /* Print normal ELF private data. */ | |
439 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
440 | ||
441 | flags = elf_elfheader (abfd)->e_flags; | |
442 | fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); | |
443 | ||
444 | switch (flags & EF_ARC_MACH_MSK) | |
445 | { | |
34e967a5 MC |
446 | case EF_ARC_CPU_ARCV2HS : fprintf (file, " -mcpu=ARCv2HS"); break; |
447 | case EF_ARC_CPU_ARCV2EM : fprintf (file, " -mcpu=ARCv2EM"); break; | |
448 | case E_ARC_MACH_ARC600 : fprintf (file, " -mcpu=ARC600"); break; | |
449 | case E_ARC_MACH_ARC601 : fprintf (file, " -mcpu=ARC601"); break; | |
450 | case E_ARC_MACH_ARC700 : fprintf (file, " -mcpu=ARC700"); break; | |
451 | default: | |
452 | fprintf (file, "-mcpu=unknown"); | |
453 | break; | |
454 | } | |
455 | ||
456 | switch (flags & EF_ARC_OSABI_MSK) | |
457 | { | |
458 | case E_ARC_OSABI_ORIG : fprintf (file, " (ABI:legacy)"); break; | |
459 | case E_ARC_OSABI_V2 : fprintf (file, " (ABI:v2)"); break; | |
460 | case E_ARC_OSABI_V3 : fprintf (file, " (ABI:v3)"); break; | |
53a346d8 | 461 | case E_ARC_OSABI_V4 : fprintf (file, " (ABI:v4)"); break; |
34e967a5 | 462 | default: |
53a346d8 | 463 | fprintf (file, " (ABI:unknown)"); |
34e967a5 MC |
464 | break; |
465 | } | |
466 | ||
467 | fputc ('\n', file); | |
468 | return TRUE; | |
469 | } | |
470 | ||
471 | /* Copy backend specific data from one object module to another. */ | |
472 | ||
473 | static bfd_boolean | |
474 | arc_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
475 | { | |
476 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
477 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
478 | return TRUE; | |
479 | ||
480 | BFD_ASSERT (!elf_flags_init (obfd) | |
481 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
482 | ||
483 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
484 | elf_flags_init (obfd) = TRUE; | |
485 | ||
486 | /* Copy object attributes. */ | |
487 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
488 | ||
489 | return _bfd_elf_copy_private_bfd_data (ibfd, obfd); | |
490 | } | |
491 | ||
157090f7 | 492 | static reloc_howto_type * |
34e967a5 MC |
493 | bfd_elf32_bfd_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
494 | const char *r_name) | |
157090f7 AM |
495 | { |
496 | unsigned int i; | |
497 | ||
886a2506 | 498 | for (i = 0; i < ARRAY_SIZE (elf_arc_howto_table); i++) |
157090f7 AM |
499 | if (elf_arc_howto_table[i].name != NULL |
500 | && strcasecmp (elf_arc_howto_table[i].name, r_name) == 0) | |
f26dd308 | 501 | return arc_elf_howto (i); |
157090f7 AM |
502 | |
503 | return NULL; | |
504 | } | |
505 | ||
886a2506 | 506 | /* Set the howto pointer for an ARC ELF reloc. */ |
34e967a5 | 507 | |
f3185997 NC |
508 | static bfd_boolean |
509 | arc_info_to_howto_rel (bfd * abfd, | |
886a2506 NC |
510 | arelent * cache_ptr, |
511 | Elf_Internal_Rela * dst) | |
252b5132 RH |
512 | { |
513 | unsigned int r_type; | |
514 | ||
515 | r_type = ELF32_R_TYPE (dst->r_info); | |
f3185997 NC |
516 | if (r_type >= (unsigned int) R_ARC_max) |
517 | { | |
518 | /* xgettext:c-format */ | |
519 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
520 | abfd, r_type); | |
521 | bfd_set_error (bfd_error_bad_value); | |
522 | return FALSE; | |
523 | } | |
524 | ||
f26dd308 | 525 | cache_ptr->howto = arc_elf_howto (r_type); |
f3185997 | 526 | return TRUE; |
252b5132 RH |
527 | } |
528 | ||
53a346d8 CZ |
529 | /* Extract CPU features from an NTBS. */ |
530 | ||
531 | static unsigned | |
532 | arc_extract_features (const char *p) | |
533 | { | |
534 | unsigned i, r = 0; | |
535 | ||
536 | if (!p) | |
537 | return 0; | |
538 | ||
539 | for (i = 0; i < ARRAY_SIZE (bfd_feature_list); i++) | |
540 | { | |
541 | char *t = strstr (p, bfd_feature_list[i].attr); | |
542 | unsigned l = strlen (bfd_feature_list[i].attr); | |
543 | if ((t != NULL) | |
544 | && (t[l] == ',' | |
545 | || t[l] == '\0')) | |
546 | r |= bfd_feature_list[i].feature; | |
547 | } | |
548 | ||
549 | return r; | |
550 | } | |
551 | ||
552 | /* Concatenate two strings. s1 can be NULL but not | |
553 | s2. */ | |
554 | ||
555 | static char * | |
556 | arc_stralloc (char * s1, const char * s2) | |
557 | { | |
558 | char *p; | |
559 | ||
560 | /* Only s1 can be null. */ | |
561 | BFD_ASSERT (s2); | |
562 | ||
563 | p = s1 ? concat (s1, ",", s2, NULL) : (char *)s2; | |
564 | ||
565 | return p; | |
566 | } | |
567 | ||
568 | /* Merge ARC object attributes from IBFD into OBFD. Raise an error if | |
569 | there are conflicting attributes. */ | |
570 | ||
571 | static bfd_boolean | |
572 | arc_elf_merge_attributes (bfd *ibfd, struct bfd_link_info *info) | |
573 | { | |
574 | bfd *obfd = info->output_bfd; | |
575 | obj_attribute *in_attr; | |
576 | obj_attribute *out_attr; | |
577 | int i; | |
578 | bfd_boolean result = TRUE; | |
579 | const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; | |
580 | char *tagname = NULL; | |
581 | ||
582 | /* Skip the linker stubs file. This preserves previous behavior | |
583 | of accepting unknown attributes in the first input file - but | |
584 | is that a bug? */ | |
585 | if (ibfd->flags & BFD_LINKER_CREATED) | |
586 | return TRUE; | |
587 | ||
588 | /* Skip any input that hasn't attribute section. | |
589 | This enables to link object files without attribute section with | |
590 | any others. */ | |
591 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL) | |
592 | return TRUE; | |
593 | ||
594 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
595 | { | |
596 | /* This is the first object. Copy the attributes. */ | |
597 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
598 | ||
599 | out_attr = elf_known_obj_attributes_proc (obfd); | |
600 | ||
601 | /* Use the Tag_null value to indicate the attributes have been | |
602 | initialized. */ | |
603 | out_attr[0].i = 1; | |
604 | ||
605 | return TRUE; | |
606 | } | |
607 | ||
608 | in_attr = elf_known_obj_attributes_proc (ibfd); | |
609 | out_attr = elf_known_obj_attributes_proc (obfd); | |
610 | ||
611 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) | |
612 | { | |
613 | /* Merge this attribute with existing attributes. */ | |
614 | switch (i) | |
615 | { | |
616 | case Tag_ARC_PCS_config: | |
617 | if (out_attr[i].i == 0) | |
618 | out_attr[i].i = in_attr[i].i; | |
619 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i) | |
620 | { | |
621 | const char *tagval[] = { "Absent", "Bare-metal/mwdt", | |
622 | "Bare-metal/newlib", "Linux/uclibc", | |
623 | "Linux/glibc" }; | |
624 | BFD_ASSERT (in_attr[i].i < 5); | |
625 | BFD_ASSERT (out_attr[i].i < 5); | |
626 | /* It's sometimes ok to mix different configs, so this is only | |
627 | a warning. */ | |
628 | _bfd_error_handler | |
38f14ab8 AM |
629 | (_("warning: %pB: conflicting platform configuration " |
630 | "%s with %s"), ibfd, | |
53a346d8 CZ |
631 | tagval[in_attr[i].i], |
632 | tagval[out_attr[i].i]); | |
633 | } | |
634 | break; | |
635 | ||
636 | case Tag_ARC_CPU_base: | |
637 | if (out_attr[i].i == 0) | |
638 | out_attr[i].i = in_attr[i].i; | |
639 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i | |
640 | && ((out_attr[i].i + in_attr[i].i) < 6)) | |
641 | { | |
642 | const char *tagval[] = { "Absent", "ARC6xx", "ARC7xx", | |
643 | "ARCEM", "ARCHS" }; | |
644 | BFD_ASSERT (in_attr[i].i < 5); | |
645 | BFD_ASSERT (out_attr[i].i < 5); | |
646 | /* We cannot mix code for different CPUs. */ | |
647 | _bfd_error_handler | |
871b3ab2 | 648 | (_("error: %pB: unable to merge CPU base attributes " |
38f14ab8 | 649 | "%s with %s"), |
53a346d8 CZ |
650 | obfd, |
651 | tagval[in_attr[i].i], | |
652 | tagval[out_attr[i].i]); | |
653 | result = FALSE; | |
654 | break; | |
655 | } | |
656 | else | |
657 | { | |
658 | /* The CPUs may be different, check if we can still mix | |
659 | the objects against the output choosen CPU. */ | |
660 | unsigned in_feature = 0; | |
661 | unsigned out_feature = 0; | |
662 | char *p1 = in_attr[Tag_ARC_ISA_config].s; | |
663 | char *p2 = out_attr[Tag_ARC_ISA_config].s; | |
664 | unsigned j; | |
665 | unsigned cpu_out; | |
666 | unsigned opcode_map[] = {0, ARC_OPCODE_ARC600, ARC_OPCODE_ARC700, | |
667 | ARC_OPCODE_ARCv2EM, ARC_OPCODE_ARCv2HS}; | |
668 | ||
669 | BFD_ASSERT (in_attr[i].i < (sizeof (opcode_map) | |
670 | / sizeof (unsigned))); | |
671 | BFD_ASSERT (out_attr[i].i < (sizeof (opcode_map) | |
672 | / sizeof (unsigned))); | |
673 | cpu_out = opcode_map[out_attr[i].i]; | |
674 | ||
675 | in_feature = arc_extract_features (p1); | |
676 | out_feature = arc_extract_features (p2); | |
677 | ||
678 | /* First, check if a feature is compatible with the | |
679 | output object chosen CPU. */ | |
680 | for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++) | |
681 | if (((in_feature | out_feature) & bfd_feature_list[j].feature) | |
682 | && (!(cpu_out & bfd_feature_list[j].cpus))) | |
683 | { | |
684 | _bfd_error_handler | |
871b3ab2 | 685 | (_("error: %pB: unable to merge ISA extension attributes " |
38f14ab8 | 686 | "%s"), |
53a346d8 CZ |
687 | obfd, bfd_feature_list[j].name); |
688 | result = FALSE; | |
689 | break; | |
690 | } | |
691 | /* Second, if we have compatible features with the | |
692 | chosen CPU, check if they are compatible among | |
693 | them. */ | |
694 | for (j = 0; j < ARRAY_SIZE (bfd_conflict_list); j++) | |
695 | if (((in_feature | out_feature) & bfd_conflict_list[j]) | |
696 | == bfd_conflict_list[j]) | |
697 | { | |
698 | unsigned k; | |
699 | for (k = 0; k < ARRAY_SIZE (bfd_feature_list); k++) | |
700 | { | |
701 | if (in_feature & bfd_feature_list[k].feature | |
702 | & bfd_conflict_list[j]) | |
703 | p1 = (char *) bfd_feature_list[k].name; | |
704 | if (out_feature & bfd_feature_list[k].feature | |
705 | & bfd_conflict_list[j]) | |
706 | p2 = (char *) bfd_feature_list[k].name; | |
707 | } | |
708 | _bfd_error_handler | |
871b3ab2 | 709 | (_("error: %pB: conflicting ISA extension attributes " |
38f14ab8 | 710 | "%s with %s"), |
53a346d8 CZ |
711 | obfd, p1, p2); |
712 | result = FALSE; | |
713 | break; | |
714 | } | |
715 | /* Everithing is alright. */ | |
716 | out_feature |= in_feature; | |
717 | p1 = NULL; | |
718 | for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++) | |
719 | if (out_feature & bfd_feature_list[j].feature) | |
720 | p1 = arc_stralloc (p1, bfd_feature_list[j].attr); | |
721 | if (p1) | |
722 | out_attr[Tag_ARC_ISA_config].s = | |
723 | _bfd_elf_attr_strdup (obfd, p1); | |
724 | } | |
725 | /* Fall through. */ | |
726 | case Tag_ARC_CPU_variation: | |
727 | case Tag_ARC_ISA_mpy_option: | |
728 | case Tag_ARC_ABI_osver: | |
729 | /* Use the largest value specified. */ | |
730 | if (in_attr[i].i > out_attr[i].i) | |
731 | out_attr[i].i = in_attr[i].i; | |
732 | break; | |
733 | ||
2fd43d78 | 734 | /* The CPU name is given by the vendor, just choose an |
735 | existing one if missing or different. There are no fail | |
736 | criteria if they different or both missing. */ | |
53a346d8 | 737 | case Tag_ARC_CPU_name: |
2fd43d78 | 738 | if (!out_attr[i].s && in_attr[i].s) |
739 | out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s); | |
53a346d8 CZ |
740 | break; |
741 | ||
742 | case Tag_ARC_ABI_rf16: | |
743 | if (out_attr[i].i == 0) | |
744 | out_attr[i].i = in_attr[i].i; | |
745 | else if (out_attr[i].i != in_attr[i].i) | |
746 | { | |
747 | /* We cannot mix code with rf16 and without. */ | |
748 | _bfd_error_handler | |
38f14ab8 | 749 | (_("error: %pB: cannot mix rf16 with full register set %pB"), |
53a346d8 CZ |
750 | obfd, ibfd); |
751 | result = FALSE; | |
752 | } | |
753 | break; | |
754 | ||
755 | case Tag_ARC_ABI_pic: | |
756 | tagname = "PIC"; | |
8e7f04f1 | 757 | /* fall through */ |
53a346d8 CZ |
758 | case Tag_ARC_ABI_sda: |
759 | if (!tagname) | |
760 | tagname = "SDA"; | |
8e7f04f1 | 761 | /* fall through */ |
53a346d8 CZ |
762 | case Tag_ARC_ABI_tls: |
763 | { | |
764 | const char *tagval[] = { "Absent", "MWDT", "GNU" }; | |
765 | ||
766 | if (!tagname) | |
767 | tagname = "TLS"; | |
768 | ||
769 | BFD_ASSERT (in_attr[i].i < 3); | |
770 | BFD_ASSERT (out_attr[i].i < 3); | |
2fd43d78 | 771 | if (out_attr[i].i == 0) |
772 | out_attr[i].i = in_attr[i].i; | |
773 | else if (out_attr[i].i != 0 && in_attr[i].i != 0 | |
53a346d8 CZ |
774 | && out_attr[i].i != in_attr[i].i) |
775 | { | |
776 | _bfd_error_handler | |
38f14ab8 | 777 | (_("error: %pB: conflicting attributes %s: %s with %s"), |
53a346d8 CZ |
778 | obfd, tagname, |
779 | tagval[in_attr[i].i], | |
780 | tagval[out_attr[i].i]); | |
781 | result = FALSE; | |
782 | } | |
783 | tagname = NULL; | |
784 | break; | |
785 | } | |
786 | ||
787 | case Tag_ARC_ABI_double_size: | |
788 | tagname = "Double size"; | |
8e7f04f1 | 789 | /* fall through */ |
53a346d8 CZ |
790 | case Tag_ARC_ABI_enumsize: |
791 | if (!tagname) | |
792 | tagname = "Enum size"; | |
8e7f04f1 | 793 | /* fall through */ |
53a346d8 CZ |
794 | case Tag_ARC_ABI_exceptions: |
795 | if (!tagname) | |
796 | tagname = "ABI exceptions"; | |
797 | ||
2fd43d78 | 798 | if (out_attr[i].i == 0) |
799 | out_attr[i].i = in_attr[i].i; | |
800 | else if (out_attr[i].i != 0 && in_attr[i].i != 0 | |
53a346d8 CZ |
801 | && out_attr[i].i != in_attr[i].i) |
802 | { | |
803 | _bfd_error_handler | |
38f14ab8 | 804 | (_("error: %pB: conflicting attributes %s"), |
53a346d8 CZ |
805 | obfd, tagname); |
806 | result = FALSE; | |
807 | } | |
808 | break; | |
809 | ||
810 | case Tag_ARC_ISA_apex: | |
811 | break; /* Do nothing for APEX attributes. */ | |
812 | ||
813 | case Tag_ARC_ISA_config: | |
814 | /* It is handled in Tag_ARC_CPU_base. */ | |
815 | break; | |
816 | ||
db1e1b45 | 817 | case Tag_ARC_ATR_version: |
818 | if (out_attr[i].i == 0) | |
819 | out_attr[i].i = in_attr[i].i; | |
820 | break; | |
821 | ||
53a346d8 CZ |
822 | default: |
823 | result | |
824 | = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); | |
825 | } | |
826 | ||
827 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
828 | if (in_attr[i].type && !out_attr[i].type) | |
829 | out_attr[i].type = in_attr[i].type; | |
830 | } | |
831 | ||
832 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
833 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) | |
834 | return FALSE; | |
835 | ||
836 | /* Check for any attributes not known on ARC. */ | |
837 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); | |
838 | ||
839 | return result; | |
840 | } | |
841 | ||
34e967a5 MC |
842 | /* Merge backend specific data from an object file to the output |
843 | object file when linking. */ | |
844 | ||
845 | static bfd_boolean | |
50e03d47 | 846 | arc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
34e967a5 | 847 | { |
50e03d47 | 848 | bfd *obfd = info->output_bfd; |
34e967a5 MC |
849 | unsigned short mach_ibfd; |
850 | static unsigned short mach_obfd = EM_NONE; | |
851 | flagword out_flags; | |
852 | flagword in_flags; | |
853 | asection *sec; | |
854 | ||
855 | /* Check if we have the same endianess. */ | |
50e03d47 | 856 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
1047201f | 857 | return FALSE; |
34e967a5 | 858 | |
53a346d8 CZ |
859 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
860 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
861 | return TRUE; | |
862 | ||
34e967a5 MC |
863 | /* Collect ELF flags. */ |
864 | in_flags = elf_elfheader (ibfd)->e_flags & EF_ARC_MACH_MSK; | |
865 | out_flags = elf_elfheader (obfd)->e_flags & EF_ARC_MACH_MSK; | |
866 | ||
867 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
868 | { | |
869 | elf_flags_init (obfd) = TRUE; | |
870 | out_flags = in_flags; | |
871 | } | |
872 | ||
53a346d8 CZ |
873 | if (!arc_elf_merge_attributes (ibfd, info)) |
874 | return FALSE; | |
34e967a5 MC |
875 | |
876 | /* Check to see if the input BFD actually contains any sections. Do | |
877 | not short-circuit dynamic objects; their section list may be | |
878 | emptied by elf_link_add_object_symbols. */ | |
879 | if (!(ibfd->flags & DYNAMIC)) | |
880 | { | |
881 | bfd_boolean null_input_bfd = TRUE; | |
882 | bfd_boolean only_data_sections = TRUE; | |
883 | ||
884 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
885 | { | |
886 | if ((bfd_get_section_flags (ibfd, sec) | |
887 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
888 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
889 | only_data_sections = FALSE; | |
890 | ||
891 | null_input_bfd = FALSE; | |
892 | } | |
893 | ||
894 | if (null_input_bfd || only_data_sections) | |
895 | return TRUE; | |
896 | } | |
897 | ||
898 | /* Complain about various flag/architecture mismatches. */ | |
899 | mach_ibfd = elf_elfheader (ibfd)->e_machine; | |
900 | if (mach_obfd == EM_NONE) | |
901 | { | |
902 | mach_obfd = mach_ibfd; | |
903 | } | |
904 | else | |
905 | { | |
906 | if (mach_ibfd != mach_obfd) | |
907 | { | |
695344c0 | 908 | /* xgettext:c-format */ |
38f14ab8 | 909 | _bfd_error_handler (_("error: attempting to link %pB " |
871b3ab2 | 910 | "with a binary %pB of different architecture"), |
dae82561 | 911 | ibfd, obfd); |
34e967a5 MC |
912 | return FALSE; |
913 | } | |
53a346d8 CZ |
914 | else if ((in_flags != out_flags) |
915 | /* If we have object attributes, then we already | |
916 | checked the objects compatibility, skip it. */ | |
917 | && !bfd_elf_get_obj_attr_int (ibfd, OBJ_ATTR_PROC, | |
918 | Tag_ARC_CPU_base)) | |
34e967a5 | 919 | { |
34e967a5 | 920 | if (in_flags && out_flags) |
6af04484 CZ |
921 | { |
922 | /* Warn if different flags. */ | |
923 | _bfd_error_handler | |
924 | /* xgettext:c-format */ | |
925 | (_("%pB: uses different e_flags (%#x) fields than " | |
926 | "previous modules (%#x)"), | |
927 | ibfd, in_flags, out_flags); | |
928 | return FALSE; | |
929 | } | |
34e967a5 MC |
930 | /* MWDT doesnt set the eflags hence make sure we choose the |
931 | eflags set by gcc. */ | |
932 | in_flags = in_flags > out_flags ? in_flags : out_flags; | |
933 | } | |
53a346d8 CZ |
934 | else |
935 | { | |
936 | /* Everything is correct; don't change the output flags. */ | |
937 | in_flags = out_flags; | |
938 | } | |
34e967a5 MC |
939 | } |
940 | ||
941 | /* Update the flags. */ | |
942 | elf_elfheader (obfd)->e_flags = in_flags; | |
943 | ||
944 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
945 | { | |
946 | return bfd_set_arch_mach (obfd, bfd_arch_arc, bfd_get_mach (ibfd)); | |
947 | } | |
948 | ||
949 | return TRUE; | |
950 | } | |
951 | ||
53a346d8 CZ |
952 | /* Return a best guess for the machine number based on the attributes. */ |
953 | ||
954 | static unsigned int | |
955 | bfd_arc_get_mach_from_attributes (bfd * abfd) | |
956 | { | |
957 | int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ARC_CPU_base); | |
958 | unsigned e_machine = elf_elfheader (abfd)->e_machine; | |
959 | ||
960 | switch (arch) | |
961 | { | |
962 | case TAG_CPU_ARC6xx: | |
963 | return bfd_mach_arc_arc600; | |
964 | case TAG_CPU_ARC7xx: | |
965 | return bfd_mach_arc_arc700; | |
966 | case TAG_CPU_ARCEM: | |
967 | case TAG_CPU_ARCHS: | |
968 | return bfd_mach_arc_arcv2; | |
969 | default: | |
970 | break; | |
971 | } | |
972 | return (e_machine == EM_ARC_COMPACT) | |
973 | ? bfd_mach_arc_arc700 : bfd_mach_arc_arcv2; | |
974 | } | |
975 | ||
252b5132 | 976 | /* Set the right machine number for an ARC ELF file. */ |
b34976b6 | 977 | static bfd_boolean |
886a2506 | 978 | arc_elf_object_p (bfd * abfd) |
252b5132 | 979 | { |
886a2506 NC |
980 | /* Make sure this is initialised, or you'll have the potential of passing |
981 | garbage---or misleading values---into the call to | |
982 | bfd_default_set_arch_mach (). */ | |
53a346d8 | 983 | unsigned int mach = bfd_mach_arc_arc700; |
886a2506 NC |
984 | unsigned long arch = elf_elfheader (abfd)->e_flags & EF_ARC_MACH_MSK; |
985 | unsigned e_machine = elf_elfheader (abfd)->e_machine; | |
252b5132 | 986 | |
886a2506 | 987 | if (e_machine == EM_ARC_COMPACT || e_machine == EM_ARC_COMPACT2) |
252b5132 | 988 | { |
0d2bcfaf NC |
989 | switch (arch) |
990 | { | |
886a2506 NC |
991 | case E_ARC_MACH_ARC600: |
992 | mach = bfd_mach_arc_arc600; | |
993 | break; | |
994 | case E_ARC_MACH_ARC601: | |
995 | mach = bfd_mach_arc_arc601; | |
996 | break; | |
997 | case E_ARC_MACH_ARC700: | |
998 | mach = bfd_mach_arc_arc700; | |
999 | break; | |
1000 | case EF_ARC_CPU_ARCV2HS: | |
1001 | case EF_ARC_CPU_ARCV2EM: | |
1002 | mach = bfd_mach_arc_arcv2; | |
1003 | break; | |
1004 | default: | |
53a346d8 | 1005 | mach = bfd_arc_get_mach_from_attributes (abfd); |
886a2506 NC |
1006 | break; |
1007 | } | |
1008 | } | |
1009 | else | |
1010 | { | |
1011 | if (e_machine == EM_ARC) | |
1012 | { | |
4eca0228 | 1013 | _bfd_error_handler |
38f14ab8 | 1014 | (_("error: the ARC4 architecture is no longer supported")); |
886a2506 NC |
1015 | return FALSE; |
1016 | } | |
1017 | else | |
1018 | { | |
4eca0228 | 1019 | _bfd_error_handler |
38f14ab8 AM |
1020 | (_("warning: unset or old architecture flags; " |
1021 | "use default machine")); | |
0d2bcfaf | 1022 | } |
252b5132 | 1023 | } |
886a2506 | 1024 | |
0d2bcfaf | 1025 | return bfd_default_set_arch_mach (abfd, bfd_arch_arc, mach); |
252b5132 RH |
1026 | } |
1027 | ||
1028 | /* The final processing done just before writing out an ARC ELF object file. | |
1029 | This gets the ARC architecture right based on the machine number. */ | |
1030 | ||
1031 | static void | |
34e967a5 MC |
1032 | arc_elf_final_write_processing (bfd * abfd, |
1033 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 | 1034 | { |
886a2506 | 1035 | unsigned long emf; |
53a346d8 CZ |
1036 | int osver = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, |
1037 | Tag_ARC_ABI_osver); | |
1038 | flagword e_flags = elf_elfheader (abfd)->e_flags & ~EF_ARC_OSABI_MSK; | |
252b5132 | 1039 | |
0d2bcfaf | 1040 | switch (bfd_get_mach (abfd)) |
252b5132 | 1041 | { |
886a2506 | 1042 | case bfd_mach_arc_arc600: |
886a2506 | 1043 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1044 | break; |
886a2506 | 1045 | case bfd_mach_arc_arc601: |
886a2506 | 1046 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1047 | break; |
886a2506 | 1048 | case bfd_mach_arc_arc700: |
886a2506 | 1049 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1050 | break; |
886a2506 | 1051 | case bfd_mach_arc_arcv2: |
886a2506 | 1052 | emf = EM_ARC_COMPACT2; |
0d2bcfaf | 1053 | break; |
886a2506 | 1054 | default: |
53a346d8 | 1055 | return; |
252b5132 | 1056 | } |
34e967a5 | 1057 | |
886a2506 | 1058 | elf_elfheader (abfd)->e_machine = emf; |
7e458899 | 1059 | |
886a2506 | 1060 | /* Record whatever is the current syscall ABI version. */ |
53a346d8 CZ |
1061 | if (osver) |
1062 | e_flags |= ((osver & 0x0f) << 8); | |
1063 | else | |
1064 | e_flags |= E_ARC_OSABI_V3; | |
3c8adaca | 1065 | |
53a346d8 | 1066 | elf_elfheader (abfd)->e_flags |= e_flags; |
252b5132 RH |
1067 | } |
1068 | ||
f7e8b360 NC |
1069 | #ifdef ARC_ENABLE_DEBUG |
1070 | #define DEBUG_ARC_RELOC(A) debug_arc_reloc (A) | |
886a2506 NC |
1071 | |
1072 | static void | |
1073 | debug_arc_reloc (struct arc_relocation_data reloc_data) | |
1074 | { | |
f7e8b360 NC |
1075 | ARC_DEBUG ("Reloc type=%s, should_relocate = %s\n", |
1076 | reloc_data.howto->name, | |
1077 | reloc_data.should_relocate ? "true" : "false"); | |
1078 | ARC_DEBUG (" offset = 0x%x, addend = 0x%x\n", | |
1079 | (unsigned int) reloc_data.reloc_offset, | |
1080 | (unsigned int) reloc_data.reloc_addend); | |
1081 | ARC_DEBUG (" Symbol:\n"); | |
1082 | ARC_DEBUG (" value = 0x%08x\n", | |
1083 | (unsigned int) reloc_data.sym_value); | |
886a2506 NC |
1084 | if (reloc_data.sym_section != NULL) |
1085 | { | |
f7e8b360 NC |
1086 | ARC_DEBUG (" Symbol Section:\n"); |
1087 | ARC_DEBUG (" section name = %s, output_offset 0x%08x", | |
1088 | reloc_data.sym_section->name, | |
1089 | (unsigned int) reloc_data.sym_section->output_offset); | |
34e967a5 | 1090 | if (reloc_data.sym_section->output_section != NULL) |
f7e8b360 | 1091 | ARC_DEBUG (", output_section->vma = 0x%08x", |
34e967a5 | 1092 | ((unsigned int) reloc_data.sym_section->output_section->vma)); |
f7e8b360 NC |
1093 | ARC_DEBUG ("\n"); |
1094 | if (reloc_data.sym_section->owner && reloc_data.sym_section->owner->filename) | |
1095 | ARC_DEBUG (" file: %s\n", reloc_data.sym_section->owner->filename); | |
886a2506 NC |
1096 | } |
1097 | else | |
34e967a5 | 1098 | { |
f7e8b360 | 1099 | ARC_DEBUG (" symbol section is NULL\n"); |
34e967a5 | 1100 | } |
886a2506 | 1101 | |
f7e8b360 | 1102 | ARC_DEBUG (" Input_section:\n"); |
886a2506 NC |
1103 | if (reloc_data.input_section != NULL) |
1104 | { | |
f7e8b360 NC |
1105 | ARC_DEBUG (" section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n", |
1106 | reloc_data.input_section->name, | |
1107 | (unsigned int) reloc_data.input_section->output_offset, | |
1108 | (unsigned int) reloc_data.input_section->output_section->vma); | |
1109 | ARC_DEBUG (" changed_address = 0x%08x\n", | |
1110 | (unsigned int) (reloc_data.input_section->output_section->vma | |
1111 | + reloc_data.input_section->output_offset | |
1112 | + reloc_data.reloc_offset)); | |
1113 | ARC_DEBUG (" file: %s\n", reloc_data.input_section->owner->filename); | |
886a2506 NC |
1114 | } |
1115 | else | |
34e967a5 | 1116 | { |
f7e8b360 | 1117 | ARC_DEBUG (" input section is NULL\n"); |
34e967a5 | 1118 | } |
886a2506 | 1119 | } |
f7e8b360 NC |
1120 | #else |
1121 | #define DEBUG_ARC_RELOC(A) | |
1122 | #endif /* ARC_ENABLE_DEBUG */ | |
886a2506 | 1123 | |
72f3b6aa CZ |
1124 | static bfd_vma |
1125 | middle_endian_convert (bfd_vma insn, bfd_boolean do_it) | |
6f4b1afc | 1126 | { |
72f3b6aa CZ |
1127 | if (do_it) |
1128 | { | |
08759e0f CM |
1129 | insn |
1130 | = ((insn & 0xffff0000) >> 16) | |
1131 | | ((insn & 0xffff) << 16); | |
72f3b6aa CZ |
1132 | } |
1133 | return insn; | |
6f4b1afc CM |
1134 | } |
1135 | ||
4b0c052e AB |
1136 | /* This function is called for relocations that are otherwise marked as NOT |
1137 | requiring overflow checks. In here we perform non-standard checks of | |
1138 | the relocation value. */ | |
1139 | ||
1140 | static inline bfd_reloc_status_type | |
1141 | arc_special_overflow_checks (const struct arc_relocation_data reloc_data, | |
08759e0f | 1142 | bfd_signed_vma relocation, |
4b0c052e AB |
1143 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
1144 | { | |
1145 | switch (reloc_data.howto->type) | |
1146 | { | |
1147 | case R_ARC_NPS_CMEM16: | |
1148 | if (((relocation >> 16) & 0xffff) != NPS_CMEM_HIGH_VALUE) | |
08759e0f CM |
1149 | { |
1150 | if (reloc_data.reloc_addend == 0) | |
4eca0228 | 1151 | _bfd_error_handler |
695344c0 | 1152 | /* xgettext:c-format */ |
2dcf00ce AM |
1153 | (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s' is invalid, " |
1154 | "16 MSB should be %#x (value is %#" PRIx64 ")"), | |
08759e0f CM |
1155 | reloc_data.input_section->owner, |
1156 | reloc_data.input_section, | |
2dcf00ce | 1157 | (uint64_t) reloc_data.reloc_offset, |
08759e0f CM |
1158 | reloc_data.symbol_name, |
1159 | NPS_CMEM_HIGH_VALUE, | |
2dcf00ce | 1160 | (uint64_t) relocation); |
08759e0f | 1161 | else |
4eca0228 | 1162 | _bfd_error_handler |
695344c0 | 1163 | /* xgettext:c-format */ |
2dcf00ce AM |
1164 | (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s+%#" PRIx64 |
1165 | "' is invalid, 16 MSB should be %#x (value is %#" PRIx64 ")"), | |
08759e0f CM |
1166 | reloc_data.input_section->owner, |
1167 | reloc_data.input_section, | |
2dcf00ce | 1168 | (uint64_t) reloc_data.reloc_offset, |
08759e0f | 1169 | reloc_data.symbol_name, |
2dcf00ce | 1170 | (uint64_t) reloc_data.reloc_addend, |
08759e0f | 1171 | NPS_CMEM_HIGH_VALUE, |
2dcf00ce | 1172 | (uint64_t) relocation); |
08759e0f CM |
1173 | return bfd_reloc_overflow; |
1174 | } | |
4b0c052e AB |
1175 | break; |
1176 | ||
1177 | default: | |
1178 | break; | |
1179 | } | |
1180 | ||
1181 | return bfd_reloc_ok; | |
1182 | } | |
1183 | ||
72f3b6aa CZ |
1184 | #define ME(reloc) (reloc) |
1185 | ||
1186 | #define IS_ME(FORMULA,BFD) ((strstr (FORMULA, "ME") != NULL) \ | |
1187 | && (!bfd_big_endian (BFD))) | |
1188 | ||
094fb063 | 1189 | #define S ((bfd_signed_vma) (reloc_data.sym_value \ |
34e967a5 MC |
1190 | + (reloc_data.sym_section->output_section != NULL ? \ |
1191 | (reloc_data.sym_section->output_offset \ | |
094fb063 CZ |
1192 | + reloc_data.sym_section->output_section->vma) : 0))) |
1193 | #define L ((bfd_signed_vma) (reloc_data.sym_value \ | |
34e967a5 MC |
1194 | + (reloc_data.sym_section->output_section != NULL ? \ |
1195 | (reloc_data.sym_section->output_offset \ | |
094fb063 | 1196 | + reloc_data.sym_section->output_section->vma) : 0))) |
886a2506 NC |
1197 | #define A (reloc_data.reloc_addend) |
1198 | #define B (0) | |
1199 | #define G (reloc_data.got_offset_value) | |
34e967a5 MC |
1200 | #define GOT (reloc_data.got_symbol_vma) |
1201 | #define GOT_BEGIN (htab->sgot->output_section->vma) | |
1202 | ||
886a2506 | 1203 | #define MES (0) |
34e967a5 MC |
1204 | /* P: relative offset to PCL The offset should be to the |
1205 | current location aligned to 32 bits. */ | |
094fb063 | 1206 | #define P ((bfd_signed_vma) ( \ |
34e967a5 MC |
1207 | ( \ |
1208 | (reloc_data.input_section->output_section != NULL ? \ | |
1209 | reloc_data.input_section->output_section->vma : 0) \ | |
1210 | + reloc_data.input_section->output_offset \ | |
094fb063 CZ |
1211 | + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0))) \ |
1212 | & ~0x3)) | |
1213 | #define PDATA ((bfd_signed_vma) ( \ | |
6f4b1afc CM |
1214 | (reloc_data.input_section->output_section->vma \ |
1215 | + reloc_data.input_section->output_offset \ | |
094fb063 | 1216 | + (reloc_data.reloc_offset)))) |
2ab2f40d CM |
1217 | #define SECTSTART (bfd_signed_vma) (reloc_data.sym_section->output_section->vma \ |
1218 | + reloc_data.sym_section->output_offset) | |
684d5a10 | 1219 | #define JLI (bfd_signed_vma) (reloc_data.sym_section->output_section->vma) |
094fb063 CZ |
1220 | #define _SDA_BASE_ (bfd_signed_vma) (reloc_data.sdata_begin_symbol_vma) |
1221 | #define TLS_REL (bfd_signed_vma) \ | |
1222 | ((elf_hash_table (info))->tls_sec->output_section->vma) | |
34e967a5 | 1223 | #define TLS_TBSS (8) |
34e967a5 | 1224 | |
886a2506 NC |
1225 | #define none (0) |
1226 | ||
f7e8b360 NC |
1227 | #ifdef ARC_ENABLE_DEBUG |
1228 | #define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA, TYPE) \ | |
1229 | do \ | |
1230 | { \ | |
1231 | asection *sym_section = reloc_data.sym_section; \ | |
1232 | asection *input_section = reloc_data.input_section; \ | |
1233 | ARC_DEBUG ("RELOC_TYPE = " TYPE "\n"); \ | |
1234 | ARC_DEBUG ("FORMULA = " FORMULA "\n"); \ | |
1235 | ARC_DEBUG ("S = %#lx\n", S); \ | |
1236 | ARC_DEBUG ("A = %#lx\n", A); \ | |
1237 | ARC_DEBUG ("L = %lx\n", L); \ | |
1238 | if (sym_section->output_section != NULL) \ | |
1239 | ARC_DEBUG ("symbol_section->vma = %#lx\n", \ | |
1240 | sym_section->output_section->vma \ | |
1241 | + sym_section->output_offset); \ | |
1242 | else \ | |
1243 | ARC_DEBUG ("symbol_section->vma = NULL\n"); \ | |
1244 | if (input_section->output_section != NULL) \ | |
1245 | ARC_DEBUG ("symbol_section->vma = %#lx\n", \ | |
1246 | input_section->output_section->vma \ | |
1247 | + input_section->output_offset); \ | |
1248 | else \ | |
1249 | ARC_DEBUG ("symbol_section->vma = NULL\n"); \ | |
1250 | ARC_DEBUG ("PCL = %#lx\n", P); \ | |
1251 | ARC_DEBUG ("P = %#lx\n", P); \ | |
1252 | ARC_DEBUG ("G = %#lx\n", G); \ | |
1253 | ARC_DEBUG ("SDA_OFFSET = %#lx\n", _SDA_BASE_); \ | |
34e967a5 | 1254 | ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \ |
f7e8b360 NC |
1255 | ARC_DEBUG ("GOT_OFFSET = %#lx\n", GOT); \ |
1256 | ARC_DEBUG ("relocation = %#08lx\n", relocation); \ | |
1257 | ARC_DEBUG ("before = %#08x\n", (unsigned) insn); \ | |
1258 | ARC_DEBUG ("data = %08x (%u) (%d)\n", (unsigned) relocation, \ | |
1259 | (unsigned) relocation, (int) relocation); \ | |
1260 | } \ | |
1261 | while (0) | |
1262 | ||
1263 | #define PRINT_DEBUG_RELOC_INFO_AFTER \ | |
1264 | do \ | |
1265 | { \ | |
1266 | ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \ | |
1267 | } \ | |
1268 | while (0) | |
34e967a5 | 1269 | |
f7e8b360 NC |
1270 | #else |
1271 | ||
1272 | #define PRINT_DEBUG_RELOC_INFO_BEFORE(...) | |
07d6d2b8 | 1273 | #define PRINT_DEBUG_RELOC_INFO_AFTER |
f7e8b360 NC |
1274 | |
1275 | #endif /* ARC_ENABLE_DEBUG */ | |
34e967a5 | 1276 | |
886a2506 | 1277 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
f7e8b360 NC |
1278 | case R_##TYPE: \ |
1279 | { \ | |
1280 | bfd_signed_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \ | |
1281 | relocation = FORMULA ; \ | |
1282 | PRINT_DEBUG_RELOC_INFO_BEFORE (#FORMULA, #TYPE); \ | |
1283 | insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \ | |
1284 | insn = (* get_replace_function (abfd, TYPE)) (insn, relocation); \ | |
1285 | insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \ | |
1286 | PRINT_DEBUG_RELOC_INFO_AFTER; \ | |
1287 | } \ | |
886a2506 NC |
1288 | break; |
1289 | ||
1290 | static bfd_reloc_status_type | |
34e967a5 MC |
1291 | arc_do_relocation (bfd_byte * contents, |
1292 | struct arc_relocation_data reloc_data, | |
1293 | struct bfd_link_info *info) | |
886a2506 | 1294 | { |
094fb063 | 1295 | bfd_signed_vma relocation = 0; |
886a2506 NC |
1296 | bfd_vma insn; |
1297 | bfd_vma orig_insn ATTRIBUTE_UNUSED; | |
72f3b6aa | 1298 | bfd * abfd = reloc_data.input_section->owner; |
34e967a5 | 1299 | struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info); |
4b0c052e | 1300 | bfd_reloc_status_type flag; |
886a2506 | 1301 | |
535b785f | 1302 | if (!reloc_data.should_relocate) |
34e967a5 | 1303 | return bfd_reloc_ok; |
886a2506 NC |
1304 | |
1305 | switch (reloc_data.howto->size) | |
1306 | { | |
1307 | case 2: | |
72f3b6aa | 1308 | insn = arc_bfd_get_32 (abfd, |
886a2506 NC |
1309 | contents + reloc_data.reloc_offset, |
1310 | reloc_data.input_section); | |
1311 | break; | |
1312 | case 1: | |
72f3b6aa CZ |
1313 | insn = arc_bfd_get_16 (abfd, |
1314 | contents + reloc_data.reloc_offset, | |
1315 | reloc_data.input_section); | |
1316 | break; | |
886a2506 | 1317 | case 0: |
72f3b6aa | 1318 | insn = arc_bfd_get_8 (abfd, |
886a2506 NC |
1319 | contents + reloc_data.reloc_offset, |
1320 | reloc_data.input_section); | |
1321 | break; | |
1322 | default: | |
1323 | insn = 0; | |
1324 | BFD_ASSERT (0); | |
1325 | break; | |
1326 | } | |
1327 | ||
1328 | orig_insn = insn; | |
1329 | ||
1330 | switch (reloc_data.howto->type) | |
1331 | { | |
34e967a5 | 1332 | #include "elf/arc-reloc.def" |
886a2506 NC |
1333 | |
1334 | default: | |
1335 | BFD_ASSERT (0); | |
1336 | break; | |
1337 | } | |
1338 | ||
1339 | /* Check for relocation overflow. */ | |
1340 | if (reloc_data.howto->complain_on_overflow != complain_overflow_dont) | |
4b0c052e | 1341 | flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow, |
08759e0f CM |
1342 | reloc_data.howto->bitsize, |
1343 | reloc_data.howto->rightshift, | |
1344 | bfd_arch_bits_per_address (abfd), | |
1345 | relocation); | |
4b0c052e AB |
1346 | else |
1347 | flag = arc_special_overflow_checks (reloc_data, relocation, info); | |
886a2506 | 1348 | |
4b0c052e AB |
1349 | if (flag != bfd_reloc_ok) |
1350 | { | |
f7e8b360 | 1351 | ARC_DEBUG ("Relocation overflows !\n"); |
4b0c052e | 1352 | DEBUG_ARC_RELOC (reloc_data); |
f7e8b360 NC |
1353 | ARC_DEBUG ("Relocation value = signed -> %d, unsigned -> %u" |
1354 | ", hex -> (0x%08x)\n", | |
1355 | (int) relocation, (unsigned) relocation, (int) relocation); | |
886a2506 | 1356 | |
4b0c052e | 1357 | return flag; |
886a2506 | 1358 | } |
886a2506 | 1359 | |
4b0c052e | 1360 | /* Write updated instruction back to memory. */ |
886a2506 NC |
1361 | switch (reloc_data.howto->size) |
1362 | { | |
1363 | case 2: | |
72f3b6aa | 1364 | arc_bfd_put_32 (abfd, insn, |
886a2506 NC |
1365 | contents + reloc_data.reloc_offset, |
1366 | reloc_data.input_section); | |
1367 | break; | |
1368 | case 1: | |
72f3b6aa CZ |
1369 | arc_bfd_put_16 (abfd, insn, |
1370 | contents + reloc_data.reloc_offset, | |
1371 | reloc_data.input_section); | |
1372 | break; | |
886a2506 | 1373 | case 0: |
72f3b6aa | 1374 | arc_bfd_put_8 (abfd, insn, |
886a2506 NC |
1375 | contents + reloc_data.reloc_offset, |
1376 | reloc_data.input_section); | |
1377 | break; | |
1378 | default: | |
1379 | ARC_DEBUG ("size = %d\n", reloc_data.howto->size); | |
1380 | BFD_ASSERT (0); | |
1381 | break; | |
1382 | } | |
1383 | ||
1384 | return bfd_reloc_ok; | |
1385 | } | |
1386 | #undef S | |
1387 | #undef A | |
1388 | #undef B | |
1389 | #undef G | |
1390 | #undef GOT | |
1391 | #undef L | |
1392 | #undef MES | |
1393 | #undef P | |
1394 | #undef SECTSTAR | |
1395 | #undef SECTSTART | |
684d5a10 | 1396 | #undef JLI |
886a2506 NC |
1397 | #undef _SDA_BASE_ |
1398 | #undef none | |
1399 | ||
1400 | #undef ARC_RELOC_HOWTO | |
1401 | ||
886a2506 | 1402 | |
886a2506 NC |
1403 | /* Relocate an arc ELF section. |
1404 | Function : elf_arc_relocate_section | |
1405 | Brief : Relocate an arc section, by handling all the relocations | |
34e967a5 | 1406 | appearing in that section. |
886a2506 | 1407 | Args : output_bfd : The bfd being written to. |
34e967a5 MC |
1408 | info : Link information. |
1409 | input_bfd : The input bfd. | |
1410 | input_section : The section being relocated. | |
1411 | contents : contents of the section being relocated. | |
1412 | relocs : List of relocations in the section. | |
1413 | local_syms : is a pointer to the swapped in local symbols. | |
1414 | local_section : is an array giving the section in the input file | |
1415 | corresponding to the st_shndx field of each | |
1416 | local symbol. */ | |
886a2506 | 1417 | static bfd_boolean |
07d6d2b8 | 1418 | elf_arc_relocate_section (bfd * output_bfd, |
886a2506 | 1419 | struct bfd_link_info * info, |
07d6d2b8 AM |
1420 | bfd * input_bfd, |
1421 | asection * input_section, | |
1422 | bfd_byte * contents, | |
886a2506 NC |
1423 | Elf_Internal_Rela * relocs, |
1424 | Elf_Internal_Sym * local_syms, | |
07d6d2b8 | 1425 | asection ** local_sections) |
886a2506 | 1426 | { |
07d6d2b8 | 1427 | Elf_Internal_Shdr * symtab_hdr; |
f7e8b360 | 1428 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
1429 | Elf_Internal_Rela * rel; |
1430 | Elf_Internal_Rela * wrel; | |
1431 | Elf_Internal_Rela * relend; | |
f7e8b360 | 1432 | struct elf_link_hash_table * htab = elf_hash_table (info); |
886a2506 NC |
1433 | |
1434 | symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr); | |
1435 | sym_hashes = elf_sym_hashes (input_bfd); | |
1436 | ||
3c8adaca | 1437 | rel = wrel = relocs; |
886a2506 | 1438 | relend = relocs + input_section->reloc_count; |
3c8adaca | 1439 | for (; rel < relend; wrel++, rel++) |
886a2506 | 1440 | { |
07d6d2b8 | 1441 | enum elf_arc_reloc_type r_type; |
34e967a5 | 1442 | reloc_howto_type * howto; |
f7e8b360 | 1443 | unsigned long r_symndx; |
886a2506 | 1444 | struct elf_link_hash_entry * h; |
34e967a5 MC |
1445 | Elf_Internal_Sym * sym; |
1446 | asection * sec; | |
f7e8b360 | 1447 | struct elf_link_hash_entry * h2; |
07d6d2b8 | 1448 | const char * msg; |
f4e6805f | 1449 | bfd_boolean unresolved_reloc = FALSE; |
886a2506 NC |
1450 | |
1451 | struct arc_relocation_data reloc_data = | |
1452 | { | |
34e967a5 MC |
1453 | .reloc_offset = 0, |
1454 | .reloc_addend = 0, | |
1455 | .got_offset_value = 0, | |
07d6d2b8 | 1456 | .sym_value = 0, |
34e967a5 MC |
1457 | .sym_section = NULL, |
1458 | .howto = NULL, | |
1459 | .input_section = NULL, | |
1460 | .sdata_begin_symbol_vma = 0, | |
1461 | .sdata_begin_symbol_vma_set = FALSE, | |
1462 | .got_symbol_vma = 0, | |
1463 | .should_relocate = FALSE | |
886a2506 NC |
1464 | }; |
1465 | ||
34e967a5 MC |
1466 | r_type = ELF32_R_TYPE (rel->r_info); |
1467 | ||
1468 | if (r_type >= (int) R_ARC_max) | |
1469 | { | |
1470 | bfd_set_error (bfd_error_bad_value); | |
1471 | return FALSE; | |
1472 | } | |
3c8adaca | 1473 | howto = arc_elf_howto (r_type); |
34e967a5 MC |
1474 | |
1475 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1476 | ||
1477 | /* If we are generating another .o file and the symbol in not | |
1478 | local, skip this relocation. */ | |
1479 | if (bfd_link_relocatable (info)) | |
1480 | { | |
1481 | /* This is a relocateable link. We don't have to change | |
1482 | anything, unless the reloc is against a section symbol, | |
1483 | in which case we have to adjust according to where the | |
1484 | section symbol winds up in the output section. */ | |
1485 | ||
1486 | /* Checks if this is a local symbol and thus the reloc | |
1487 | might (will??) be against a section symbol. */ | |
1488 | if (r_symndx < symtab_hdr->sh_info) | |
1489 | { | |
1490 | sym = local_syms + r_symndx; | |
1491 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1492 | { | |
1493 | sec = local_sections[r_symndx]; | |
1494 | ||
f7e8b360 | 1495 | /* For RELA relocs. Just adjust the addend |
34e967a5 MC |
1496 | value in the relocation entry. */ |
1497 | rel->r_addend += sec->output_offset + sym->st_value; | |
1498 | ||
f7e8b360 NC |
1499 | ARC_DEBUG ("local symbols reloc (section=%d %s) seen in %s\n", |
1500 | (int) r_symndx, local_sections[r_symndx]->name, | |
1501 | __PRETTY_FUNCTION__); | |
34e967a5 MC |
1502 | } |
1503 | } | |
34e967a5 | 1504 | } |
886a2506 NC |
1505 | |
1506 | h2 = elf_link_hash_lookup (elf_hash_table (info), "__SDATA_BEGIN__", | |
1507 | FALSE, FALSE, TRUE); | |
1508 | ||
535b785f AM |
1509 | if (!reloc_data.sdata_begin_symbol_vma_set |
1510 | && h2 != NULL && h2->root.type != bfd_link_hash_undefined | |
1511 | && h2->root.u.def.section->output_section != NULL) | |
34e967a5 | 1512 | /* TODO: Verify this condition. */ |
886a2506 NC |
1513 | { |
1514 | reloc_data.sdata_begin_symbol_vma = | |
08759e0f CM |
1515 | (h2->root.u.def.value |
1516 | + h2->root.u.def.section->output_section->vma); | |
886a2506 NC |
1517 | reloc_data.sdata_begin_symbol_vma_set = TRUE; |
1518 | } | |
1519 | ||
886a2506 NC |
1520 | reloc_data.input_section = input_section; |
1521 | reloc_data.howto = howto; | |
1522 | reloc_data.reloc_offset = rel->r_offset; | |
1523 | reloc_data.reloc_addend = rel->r_addend; | |
1524 | ||
886a2506 NC |
1525 | /* This is a final link. */ |
1526 | h = NULL; | |
1527 | sym = NULL; | |
1528 | sec = NULL; | |
1529 | ||
1530 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
1531 | { | |
1532 | sym = local_syms + r_symndx; | |
1533 | sec = local_sections[r_symndx]; | |
3c8adaca CZ |
1534 | } |
1535 | else | |
1536 | { | |
f4e6805f CM |
1537 | bfd_boolean warned, ignored; |
1538 | bfd_vma relocation ATTRIBUTE_UNUSED; | |
1539 | ||
1540 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
1541 | r_symndx, symtab_hdr, sym_hashes, | |
1542 | h, sec, relocation, | |
1543 | unresolved_reloc, warned, ignored); | |
1544 | ||
3c8adaca CZ |
1545 | /* TODO: This code is repeated from below. We should |
1546 | clean it and remove duplications. | |
1547 | Sec is used check for discarded sections. | |
1548 | Need to redesign code below. */ | |
1549 | ||
1550 | /* Get the symbol's entry in the symtab. */ | |
1551 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1552 | ||
1553 | while (h->root.type == bfd_link_hash_indirect | |
1554 | || h->root.type == bfd_link_hash_warning) | |
1555 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1556 | ||
1557 | /* If we have encountered a definition for this symbol. */ | |
1558 | if (h->root.type == bfd_link_hash_defined | |
1559 | || h->root.type == bfd_link_hash_defweak) | |
1560 | { | |
1561 | reloc_data.sym_value = h->root.u.def.value; | |
1562 | sec = h->root.u.def.section; | |
1563 | } | |
1564 | } | |
1565 | ||
1566 | /* Clean relocs for symbols in discarded sections. */ | |
1567 | if (sec != NULL && discarded_section (sec)) | |
1568 | { | |
1569 | _bfd_clear_contents (howto, input_bfd, input_section, | |
1570 | contents + rel->r_offset); | |
3c8adaca CZ |
1571 | rel->r_info = 0; |
1572 | rel->r_addend = 0; | |
1573 | ||
1574 | /* For ld -r, remove relocations in debug sections against | |
1575 | sections defined in discarded sections. Not done for | |
1576 | eh_frame editing code expects to be present. */ | |
1577 | if (bfd_link_relocatable (info) | |
1578 | && (input_section->flags & SEC_DEBUGGING)) | |
1579 | wrel--; | |
1580 | ||
1581 | continue; | |
1582 | } | |
1583 | ||
1584 | if (bfd_link_relocatable (info)) | |
1585 | { | |
1586 | if (wrel != rel) | |
1587 | *wrel = *rel; | |
1588 | continue; | |
1589 | } | |
1590 | ||
1591 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
1592 | { | |
886a2506 NC |
1593 | reloc_data.sym_value = sym->st_value; |
1594 | reloc_data.sym_section = sec; | |
4b0c052e | 1595 | reloc_data.symbol_name = |
3c8adaca CZ |
1596 | bfd_elf_string_from_elf_section (input_bfd, |
1597 | symtab_hdr->sh_link, | |
1598 | sym->st_name); | |
886a2506 | 1599 | |
841fdfcd CZ |
1600 | /* Mergeable section handling. */ |
1601 | if ((sec->flags & SEC_MERGE) | |
1602 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1603 | { | |
1604 | asection *msec; | |
1605 | msec = sec; | |
1606 | rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym, | |
1607 | &msec, rel->r_addend); | |
1608 | rel->r_addend -= (sec->output_section->vma | |
1609 | + sec->output_offset | |
1610 | + sym->st_value); | |
1611 | rel->r_addend += msec->output_section->vma + msec->output_offset; | |
1612 | ||
1613 | reloc_data.reloc_addend = rel->r_addend; | |
1614 | } | |
1615 | ||
34e967a5 MC |
1616 | BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto)); |
1617 | if (htab->sgot != NULL) | |
1618 | reloc_data.got_symbol_vma = htab->sgot->output_section->vma | |
1619 | + htab->sgot->output_offset; | |
886a2506 NC |
1620 | |
1621 | reloc_data.should_relocate = TRUE; | |
1622 | } | |
1623 | else /* Global symbol. */ | |
1624 | { | |
f7e8b360 NC |
1625 | /* FIXME: We should use the RELOC_FOR_GLOBAL_SYMBOL macro |
1626 | (defined in elf-bfd.h) here. */ | |
1627 | ||
886a2506 NC |
1628 | /* Get the symbol's entry in the symtab. */ |
1629 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1630 | ||
1631 | while (h->root.type == bfd_link_hash_indirect | |
1632 | || h->root.type == bfd_link_hash_warning) | |
cc89d0b3 CM |
1633 | { |
1634 | struct elf_link_hash_entry *h_old = h; | |
886a2506 | 1635 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
cc89d0b3 CM |
1636 | if (h->got.glist == 0 && h_old->got.glist != h->got.glist) |
1637 | h->got.glist = h_old->got.glist; | |
1638 | } | |
886a2506 | 1639 | |
3c8adaca CZ |
1640 | /* TODO: Need to validate what was the intention. */ |
1641 | /* BFD_ASSERT ((h->dynindx == -1) || (h->forced_local != 0)); */ | |
4b0c052e | 1642 | reloc_data.symbol_name = h->root.root.string; |
3c8adaca | 1643 | |
886a2506 NC |
1644 | /* If we have encountered a definition for this symbol. */ |
1645 | if (h->root.type == bfd_link_hash_defined | |
1646 | || h->root.type == bfd_link_hash_defweak) | |
1647 | { | |
1648 | reloc_data.sym_value = h->root.u.def.value; | |
1649 | reloc_data.sym_section = h->root.u.def.section; | |
1650 | ||
1651 | reloc_data.should_relocate = TRUE; | |
1652 | ||
34e967a5 | 1653 | if (is_reloc_for_GOT (howto) && !bfd_link_pic (info)) |
886a2506 | 1654 | { |
34e967a5 MC |
1655 | /* TODO: Change it to use arc_do_relocation with |
1656 | ARC_32 reloc. Try to use ADD_RELA macro. */ | |
886a2506 NC |
1657 | bfd_vma relocation = |
1658 | reloc_data.sym_value + reloc_data.reloc_addend | |
34e967a5 MC |
1659 | + (reloc_data.sym_section->output_section != NULL ? |
1660 | (reloc_data.sym_section->output_offset | |
1661 | + reloc_data.sym_section->output_section->vma) | |
1662 | : 0); | |
1663 | ||
1664 | BFD_ASSERT (h->got.glist); | |
1665 | bfd_vma got_offset = h->got.glist->offset; | |
1666 | bfd_put_32 (output_bfd, relocation, | |
1667 | htab->sgot->contents + got_offset); | |
1668 | } | |
1669 | if (is_reloc_for_PLT (howto) && h->plt.offset != (bfd_vma) -1) | |
1670 | { | |
1671 | /* TODO: This is repeated up here. */ | |
1672 | reloc_data.sym_value = h->plt.offset; | |
1673 | reloc_data.sym_section = htab->splt; | |
886a2506 NC |
1674 | } |
1675 | } | |
1676 | else if (h->root.type == bfd_link_hash_undefweak) | |
1677 | { | |
1678 | /* Is weak symbol and has no definition. */ | |
34e967a5 MC |
1679 | if (is_reloc_for_GOT (howto)) |
1680 | { | |
1681 | reloc_data.sym_value = h->root.u.def.value; | |
1682 | reloc_data.sym_section = htab->sgot; | |
1683 | reloc_data.should_relocate = TRUE; | |
1684 | } | |
1685 | else if (is_reloc_for_PLT (howto) | |
1686 | && h->plt.offset != (bfd_vma) -1) | |
1687 | { | |
1688 | /* TODO: This is repeated up here. */ | |
1689 | reloc_data.sym_value = h->plt.offset; | |
1690 | reloc_data.sym_section = htab->splt; | |
1691 | reloc_data.should_relocate = TRUE; | |
1692 | } | |
1693 | else | |
1694 | continue; | |
886a2506 NC |
1695 | } |
1696 | else | |
1697 | { | |
1698 | if (is_reloc_for_GOT (howto)) | |
1699 | { | |
886a2506 | 1700 | reloc_data.sym_value = h->root.u.def.value; |
34e967a5 | 1701 | reloc_data.sym_section = htab->sgot; |
886a2506 NC |
1702 | |
1703 | reloc_data.should_relocate = TRUE; | |
1704 | } | |
1705 | else if (is_reloc_for_PLT (howto)) | |
1706 | { | |
7e458899 CZ |
1707 | /* Fail if it is linking for PIE and the symbol is |
1708 | undefined. */ | |
1a72702b AM |
1709 | if (bfd_link_executable (info)) |
1710 | (*info->callbacks->undefined_symbol) | |
1711 | (info, h->root.root.string, input_bfd, input_section, | |
1712 | rel->r_offset, TRUE); | |
886a2506 | 1713 | reloc_data.sym_value = h->plt.offset; |
34e967a5 | 1714 | reloc_data.sym_section = htab->splt; |
886a2506 NC |
1715 | |
1716 | reloc_data.should_relocate = TRUE; | |
1717 | } | |
8a36df4d | 1718 | else if (!bfd_link_pic (info) || bfd_link_executable (info)) |
1a72702b AM |
1719 | (*info->callbacks->undefined_symbol) |
1720 | (info, h->root.root.string, input_bfd, input_section, | |
1721 | rel->r_offset, TRUE); | |
886a2506 NC |
1722 | } |
1723 | ||
34e967a5 MC |
1724 | BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto)); |
1725 | if (htab->sgot != NULL) | |
1726 | reloc_data.got_symbol_vma = htab->sgot->output_section->vma | |
1727 | + htab->sgot->output_offset; | |
886a2506 NC |
1728 | } |
1729 | ||
08759e0f CM |
1730 | if ((is_reloc_for_GOT (howto) |
1731 | || is_reloc_for_TLS (howto))) | |
1732 | { | |
980aa3e6 CM |
1733 | reloc_data.should_relocate = TRUE; |
1734 | ||
08759e0f CM |
1735 | struct got_entry **list |
1736 | = get_got_entry_list_for_symbol (output_bfd, r_symndx, h); | |
1737 | ||
1738 | reloc_data.got_offset_value | |
1739 | = relocate_fix_got_relocs_for_got_info (list, | |
1740 | tls_type_for_reloc (howto), | |
1741 | info, | |
1742 | output_bfd, | |
1743 | r_symndx, | |
1744 | local_syms, | |
1745 | local_sections, | |
1746 | h, | |
1747 | &reloc_data); | |
1748 | ||
1749 | if (h == NULL) | |
1750 | { | |
1751 | create_got_dynrelocs_for_single_entry ( | |
1752 | got_entry_for_type (list, | |
07d6d2b8 | 1753 | arc_got_entry_type_for_reloc (howto)), |
08759e0f CM |
1754 | output_bfd, info, NULL); |
1755 | } | |
1756 | } | |
f7e8b360 | 1757 | |
cd640291 CM |
1758 | |
1759 | #define IS_ARC_PCREL_TYPE(TYPE) \ | |
1760 | ( (TYPE == R_ARC_PC32) \ | |
1761 | || (TYPE == R_ARC_32_PCREL)) | |
1762 | ||
34e967a5 MC |
1763 | switch (r_type) |
1764 | { | |
1765 | case R_ARC_32: | |
1766 | case R_ARC_32_ME: | |
1767 | case R_ARC_PC32: | |
1768 | case R_ARC_32_PCREL: | |
cd640291 CM |
1769 | if (bfd_link_pic (info) |
1770 | && (!IS_ARC_PCREL_TYPE (r_type) | |
34e967a5 MC |
1771 | || (h != NULL |
1772 | && h->dynindx != -1 | |
cd640291 | 1773 | && !h->def_regular |
34e967a5 MC |
1774 | && (!info->symbolic || !h->def_regular)))) |
1775 | { | |
1776 | Elf_Internal_Rela outrel; | |
1777 | bfd_byte *loc; | |
1778 | bfd_boolean skip = FALSE; | |
1779 | bfd_boolean relocate = FALSE; | |
1780 | asection *sreloc = _bfd_elf_get_dynamic_reloc_section | |
1781 | (input_bfd, input_section, | |
1782 | /*RELA*/ TRUE); | |
1783 | ||
1784 | BFD_ASSERT (sreloc != NULL); | |
1785 | ||
1786 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
1787 | info, | |
1788 | input_section, | |
1789 | rel->r_offset); | |
cd640291 | 1790 | |
34e967a5 MC |
1791 | if (outrel.r_offset == (bfd_vma) -1) |
1792 | skip = TRUE; | |
1793 | ||
1794 | outrel.r_addend = rel->r_addend; | |
1795 | outrel.r_offset += (input_section->output_section->vma | |
1796 | + input_section->output_offset); | |
1797 | ||
1798 | if (skip) | |
1799 | { | |
1800 | memset (&outrel, 0, sizeof outrel); | |
1801 | relocate = FALSE; | |
1802 | } | |
3c8adaca CZ |
1803 | else if (h != NULL |
1804 | && h->dynindx != -1 | |
cd640291 CM |
1805 | && (IS_ARC_PCREL_TYPE (r_type) |
1806 | || !(bfd_link_executable (info) | |
1807 | || SYMBOLIC_BIND (info, h)) | |
1808 | || ! h->def_regular)) | |
34e967a5 | 1809 | { |
94e5c971 | 1810 | BFD_ASSERT (h != NULL); |
34e967a5 MC |
1811 | if ((input_section->flags & SEC_ALLOC) != 0) |
1812 | relocate = FALSE; | |
1813 | else | |
1814 | relocate = TRUE; | |
94e5c971 CZ |
1815 | |
1816 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
1817 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1818 | } | |
1819 | else | |
1820 | { | |
1821 | /* Handle local symbols, they either do not have a | |
1822 | global hash table entry (h == NULL), or are | |
1823 | forced local due to a version script | |
1824 | (h->forced_local), or the third condition is | |
1825 | legacy, it appears to say something like, for | |
1826 | links where we are pre-binding the symbols, or | |
1827 | there's not an entry for this symbol in the | |
1828 | dynamic symbol table, and it's a regular symbol | |
1829 | not defined in a shared object, then treat the | |
1830 | symbol as local, resolve it now. */ | |
3c8adaca CZ |
1831 | relocate = TRUE; |
1832 | /* outrel.r_addend = 0; */ | |
1833 | outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE); | |
34e967a5 MC |
1834 | } |
1835 | ||
1836 | BFD_ASSERT (sreloc->contents != 0); | |
1837 | ||
1838 | loc = sreloc->contents; | |
1839 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); | |
1840 | sreloc->reloc_count += 1; | |
1841 | ||
1842 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1843 | ||
535b785f | 1844 | if (!relocate) |
34e967a5 MC |
1845 | continue; |
1846 | } | |
1847 | break; | |
1848 | default: | |
1849 | break; | |
1850 | } | |
1851 | ||
1852 | if (is_reloc_SDA_relative (howto) | |
535b785f | 1853 | && !reloc_data.sdata_begin_symbol_vma_set) |
886a2506 | 1854 | { |
4eca0228 | 1855 | _bfd_error_handler |
38f14ab8 | 1856 | ("error: linker symbol __SDATA_BEGIN__ not found"); |
886a2506 NC |
1857 | bfd_set_error (bfd_error_bad_value); |
1858 | return FALSE; | |
1859 | } | |
1860 | ||
1861 | DEBUG_ARC_RELOC (reloc_data); | |
34e967a5 | 1862 | |
2ab2f40d | 1863 | /* Make sure we have with a dynamic linker. In case of GOT and PLT |
08759e0f | 1864 | the sym_section should point to .got or .plt respectively. */ |
815dc1bc CZ |
1865 | if ((is_reloc_for_GOT (howto) || is_reloc_for_PLT (howto)) |
1866 | && reloc_data.sym_section == NULL) | |
2ab2f40d | 1867 | { |
4eca0228 | 1868 | _bfd_error_handler |
38f14ab8 | 1869 | (_("GOT and PLT relocations cannot be fixed with a non dynamic linker")); |
2ab2f40d CM |
1870 | bfd_set_error (bfd_error_bad_value); |
1871 | return FALSE; | |
1872 | } | |
1873 | ||
f7e8b360 NC |
1874 | msg = NULL; |
1875 | switch (arc_do_relocation (contents, reloc_data, info)) | |
1876 | { | |
1877 | case bfd_reloc_ok: | |
1878 | continue; /* The reloc processing loop. */ | |
1879 | ||
1880 | case bfd_reloc_overflow: | |
1881 | (*info->callbacks->reloc_overflow) | |
1882 | (info, (h ? &h->root : NULL), reloc_data.symbol_name, howto->name, (bfd_vma) 0, | |
1883 | input_bfd, input_section, rel->r_offset); | |
1884 | break; | |
1885 | ||
1886 | case bfd_reloc_undefined: | |
1887 | (*info->callbacks->undefined_symbol) | |
1888 | (info, reloc_data.symbol_name, input_bfd, input_section, rel->r_offset, TRUE); | |
1889 | break; | |
1890 | ||
1891 | case bfd_reloc_other: | |
695344c0 | 1892 | /* xgettext:c-format */ |
871b3ab2 | 1893 | msg = _("%pB(%pA): warning: unaligned access to symbol '%s' in the small data area"); |
f7e8b360 NC |
1894 | break; |
1895 | ||
1896 | case bfd_reloc_outofrange: | |
695344c0 | 1897 | /* xgettext:c-format */ |
871b3ab2 | 1898 | msg = _("%pB(%pA): internal error: out of range error"); |
f7e8b360 NC |
1899 | break; |
1900 | ||
1901 | case bfd_reloc_notsupported: | |
695344c0 | 1902 | /* xgettext:c-format */ |
871b3ab2 | 1903 | msg = _("%pB(%pA): internal error: unsupported relocation error"); |
f7e8b360 NC |
1904 | break; |
1905 | ||
1906 | case bfd_reloc_dangerous: | |
695344c0 | 1907 | /* xgettext:c-format */ |
871b3ab2 | 1908 | msg = _("%pB(%pA): internal error: dangerous relocation"); |
f7e8b360 NC |
1909 | break; |
1910 | ||
1911 | default: | |
695344c0 | 1912 | /* xgettext:c-format */ |
871b3ab2 | 1913 | msg = _("%pB(%pA): internal error: unknown error"); |
f7e8b360 NC |
1914 | break; |
1915 | } | |
1916 | ||
1917 | if (msg) | |
1918 | _bfd_error_handler (msg, input_bfd, input_section, reloc_data.symbol_name); | |
1919 | return FALSE; | |
886a2506 NC |
1920 | } |
1921 | ||
1922 | return TRUE; | |
1923 | } | |
1924 | ||
8a36df4d CM |
1925 | #define elf_arc_hash_table(p) \ |
1926 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
1927 | == ARC_ELF_DATA ? ((struct elf_arc_link_hash_table *) ((p)->hash)) : NULL) | |
1928 | ||
886a2506 | 1929 | static bfd_boolean |
08759e0f | 1930 | elf_arc_check_relocs (bfd * abfd, |
886a2506 | 1931 | struct bfd_link_info * info, |
34e967a5 | 1932 | asection * sec, |
886a2506 NC |
1933 | const Elf_Internal_Rela * relocs) |
1934 | { | |
34e967a5 MC |
1935 | Elf_Internal_Shdr * symtab_hdr; |
1936 | struct elf_link_hash_entry ** sym_hashes; | |
34e967a5 MC |
1937 | const Elf_Internal_Rela * rel; |
1938 | const Elf_Internal_Rela * rel_end; | |
1939 | bfd * dynobj; | |
1940 | asection * sreloc = NULL; | |
e3d1d408 | 1941 | struct elf_link_hash_table * htab = elf_hash_table (info); |
34e967a5 MC |
1942 | |
1943 | if (bfd_link_relocatable (info)) | |
1944 | return TRUE; | |
886a2506 | 1945 | |
e3d1d408 CM |
1946 | if (htab->dynobj == NULL) |
1947 | htab->dynobj = abfd; | |
1948 | ||
886a2506 NC |
1949 | dynobj = (elf_hash_table (info))->dynobj; |
1950 | symtab_hdr = &((elf_tdata (abfd))->symtab_hdr); | |
1951 | sym_hashes = elf_sym_hashes (abfd); | |
886a2506 NC |
1952 | |
1953 | rel_end = relocs + sec->reloc_count; | |
1954 | for (rel = relocs; rel < rel_end; rel++) | |
1955 | { | |
1956 | enum elf_arc_reloc_type r_type; | |
1957 | reloc_howto_type *howto; | |
1958 | unsigned long r_symndx; | |
1959 | struct elf_link_hash_entry *h; | |
1960 | ||
1961 | r_type = ELF32_R_TYPE (rel->r_info); | |
1962 | ||
1963 | if (r_type >= (int) R_ARC_max) | |
1964 | { | |
1965 | bfd_set_error (bfd_error_bad_value); | |
1966 | return FALSE; | |
1967 | } | |
3c8adaca | 1968 | howto = arc_elf_howto (r_type); |
34e967a5 | 1969 | |
886a2506 NC |
1970 | /* Load symbol information. */ |
1971 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1972 | if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */ | |
1973 | h = NULL; | |
1974 | else /* Global one. */ | |
1975 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1976 | ||
34e967a5 MC |
1977 | switch (r_type) |
1978 | { | |
1979 | case R_ARC_32: | |
1980 | case R_ARC_32_ME: | |
1981 | /* During shared library creation, these relocs should not | |
1982 | appear in a shared library (as memory will be read only | |
1983 | and the dynamic linker can not resolve these. However | |
1984 | the error should not occur for e.g. debugging or | |
1985 | non-readonly sections. */ | |
9d5c718b CM |
1986 | if (h != NULL |
1987 | && (bfd_link_dll (info) && !bfd_link_pie (info)) | |
34e967a5 | 1988 | && (sec->flags & SEC_ALLOC) != 0 |
3c8adaca CZ |
1989 | && (sec->flags & SEC_READONLY) != 0 |
1990 | && ((sec->flags & SEC_CODE) != 0 | |
1991 | || (sec->flags & SEC_DEBUGGING) != 0)) | |
34e967a5 MC |
1992 | { |
1993 | const char *name; | |
1994 | if (h) | |
1995 | name = h->root.root.string; | |
1996 | else | |
1997 | /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */ | |
1998 | name = "UNKNOWN"; | |
4eca0228 | 1999 | _bfd_error_handler |
695344c0 | 2000 | /* xgettext:c-format */ |
38f14ab8 AM |
2001 | (_("%pB: relocation %s against `%s' can not be used" |
2002 | " when making a shared object; recompile with -fPIC"), | |
2003 | abfd, | |
2004 | arc_elf_howto (r_type)->name, | |
2005 | name); | |
34e967a5 MC |
2006 | bfd_set_error (bfd_error_bad_value); |
2007 | return FALSE; | |
2008 | } | |
2009 | ||
2010 | /* In some cases we are not setting the 'non_got_ref' | |
2011 | flag, even though the relocations don't require a GOT | |
2012 | access. We should extend the testing in this area to | |
2013 | ensure that no significant cases are being missed. */ | |
2014 | if (h) | |
2015 | h->non_got_ref = 1; | |
2016 | /* FALLTHROUGH */ | |
2017 | case R_ARC_PC32: | |
2018 | case R_ARC_32_PCREL: | |
8a36df4d | 2019 | if ((bfd_link_pic (info)) |
34e967a5 MC |
2020 | && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL) |
2021 | || (h != NULL | |
34e967a5 MC |
2022 | && (!info->symbolic || !h->def_regular)))) |
2023 | { | |
2024 | if (sreloc == NULL) | |
2025 | { | |
e3d1d408 CM |
2026 | if (info->dynamic |
2027 | && ! htab->dynamic_sections_created | |
2028 | && ! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
2029 | return FALSE; | |
34e967a5 MC |
2030 | sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj, |
2031 | 2, abfd, | |
2032 | /*rela*/ | |
2033 | TRUE); | |
2034 | ||
2035 | if (sreloc == NULL) | |
2036 | return FALSE; | |
2037 | } | |
2038 | sreloc->size += sizeof (Elf32_External_Rela); | |
2039 | ||
2040 | } | |
2041 | default: | |
2042 | break; | |
2043 | } | |
2044 | ||
535b785f | 2045 | if (is_reloc_for_PLT (howto)) |
886a2506 NC |
2046 | { |
2047 | if (h == NULL) | |
2048 | continue; | |
2049 | else | |
2050 | h->needs_plt = 1; | |
2051 | } | |
2052 | ||
08759e0f | 2053 | /* Add info to the symbol got_entry_list. */ |
535b785f AM |
2054 | if (is_reloc_for_GOT (howto) |
2055 | || is_reloc_for_TLS (howto)) | |
34e967a5 | 2056 | { |
e3d1d408 CM |
2057 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2058 | return FALSE; | |
2059 | ||
08759e0f CM |
2060 | arc_fill_got_info_for_reloc ( |
2061 | arc_got_entry_type_for_reloc (howto), | |
2062 | get_got_entry_list_for_symbol (abfd, r_symndx, h), | |
2063 | info, | |
2064 | h); | |
34e967a5 MC |
2065 | } |
2066 | } | |
886a2506 | 2067 | |
34e967a5 MC |
2068 | return TRUE; |
2069 | } | |
886a2506 | 2070 | |
34e967a5 | 2071 | #define ELF_DYNAMIC_INTERPRETER "/sbin/ld-uClibc.so" |
886a2506 | 2072 | |
34e967a5 MC |
2073 | static struct plt_version_t * |
2074 | arc_get_plt_version (struct bfd_link_info *info) | |
886a2506 | 2075 | { |
34e967a5 | 2076 | int i; |
886a2506 | 2077 | |
34e967a5 MC |
2078 | for (i = 0; i < 1; i++) |
2079 | { | |
2080 | ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i, | |
f7e8b360 NC |
2081 | (int) plt_versions[i].entry_size, |
2082 | (int) plt_versions[i].elem_size); | |
34e967a5 | 2083 | } |
886a2506 | 2084 | |
34e967a5 | 2085 | if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2) |
886a2506 | 2086 | { |
34e967a5 MC |
2087 | if (bfd_link_pic (info)) |
2088 | return &(plt_versions[ELF_ARCV2_PIC]); | |
2089 | else | |
2090 | return &(plt_versions[ELF_ARCV2_ABS]); | |
2091 | } | |
2092 | else | |
886a2506 | 2093 | { |
34e967a5 MC |
2094 | if (bfd_link_pic (info)) |
2095 | return &(plt_versions[ELF_ARC_PIC]); | |
2096 | else | |
2097 | return &(plt_versions[ELF_ARC_ABS]); | |
886a2506 | 2098 | } |
886a2506 NC |
2099 | } |
2100 | ||
2101 | static bfd_vma | |
2102 | add_symbol_to_plt (struct bfd_link_info *info) | |
2103 | { | |
34e967a5 | 2104 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 NC |
2105 | bfd_vma ret; |
2106 | ||
34e967a5 | 2107 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
886a2506 | 2108 | |
34e967a5 MC |
2109 | /* If this is the first .plt entry, make room for the special first |
2110 | entry. */ | |
2111 | if (htab->splt->size == 0) | |
2112 | htab->splt->size += plt_data->entry_size; | |
886a2506 | 2113 | |
34e967a5 MC |
2114 | ret = htab->splt->size; |
2115 | ||
2116 | htab->splt->size += plt_data->elem_size; | |
f7e8b360 | 2117 | ARC_DEBUG ("PLT_SIZE = %d\n", (int) htab->splt->size); |
34e967a5 MC |
2118 | |
2119 | htab->sgotplt->size += 4; | |
2120 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
886a2506 NC |
2121 | |
2122 | return ret; | |
2123 | } | |
2124 | ||
34e967a5 MC |
2125 | #define PLT_DO_RELOCS_FOR_ENTRY(ABFD, DS, RELOCS) \ |
2126 | plt_do_relocs_for_symbol (ABFD, DS, RELOCS, 0, 0) | |
886a2506 NC |
2127 | |
2128 | static void | |
34e967a5 MC |
2129 | plt_do_relocs_for_symbol (bfd *abfd, |
2130 | struct elf_link_hash_table *htab, | |
2131 | const struct plt_reloc *reloc, | |
886a2506 NC |
2132 | bfd_vma plt_offset, |
2133 | bfd_vma symbol_got_offset) | |
2134 | { | |
2135 | while (SYM_ONLY (reloc->symbol) != LAST_RELOC) | |
2136 | { | |
2137 | bfd_vma relocation = 0; | |
2138 | ||
2139 | switch (SYM_ONLY (reloc->symbol)) | |
2140 | { | |
2141 | case SGOT: | |
08759e0f CM |
2142 | relocation |
2143 | = htab->sgotplt->output_section->vma | |
2144 | + htab->sgotplt->output_offset + symbol_got_offset; | |
886a2506 NC |
2145 | break; |
2146 | } | |
2147 | relocation += reloc->addend; | |
2148 | ||
34e967a5 MC |
2149 | if (IS_RELATIVE (reloc->symbol)) |
2150 | { | |
2151 | bfd_vma reloc_offset = reloc->offset; | |
2152 | reloc_offset -= (IS_INSN_32 (reloc->symbol)) ? 4 : 0; | |
2153 | reloc_offset -= (IS_INSN_24 (reloc->symbol)) ? 2 : 0; | |
886a2506 | 2154 | |
34e967a5 MC |
2155 | relocation -= htab->splt->output_section->vma |
2156 | + htab->splt->output_offset | |
2157 | + plt_offset + reloc_offset; | |
2158 | } | |
2159 | ||
2160 | /* TODO: being ME is not a property of the relocation but of the | |
2161 | section of which is applying the relocation. */ | |
1e5885b7 | 2162 | if (IS_MIDDLE_ENDIAN (reloc->symbol) && !bfd_big_endian (abfd)) |
886a2506 | 2163 | { |
08759e0f CM |
2164 | relocation |
2165 | = ((relocation & 0xffff0000) >> 16) | |
2166 | | ((relocation & 0xffff) << 16); | |
886a2506 NC |
2167 | } |
2168 | ||
2169 | switch (reloc->size) | |
2170 | { | |
2171 | case 32: | |
34e967a5 | 2172 | bfd_put_32 (htab->splt->output_section->owner, |
886a2506 | 2173 | relocation, |
34e967a5 | 2174 | htab->splt->contents + plt_offset + reloc->offset); |
886a2506 NC |
2175 | break; |
2176 | } | |
2177 | ||
34e967a5 | 2178 | reloc = &(reloc[1]); /* Jump to next relocation. */ |
886a2506 NC |
2179 | } |
2180 | } | |
2181 | ||
2182 | static void | |
34e967a5 MC |
2183 | relocate_plt_for_symbol (bfd *output_bfd, |
2184 | struct bfd_link_info *info, | |
886a2506 NC |
2185 | struct elf_link_hash_entry *h) |
2186 | { | |
34e967a5 MC |
2187 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
2188 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
886a2506 | 2189 | |
34e967a5 MC |
2190 | bfd_vma plt_index = (h->plt.offset - plt_data->entry_size) |
2191 | / plt_data->elem_size; | |
886a2506 NC |
2192 | bfd_vma got_offset = (plt_index + 3) * 4; |
2193 | ||
f7e8b360 NC |
2194 | ARC_DEBUG ("arc_info: PLT_OFFSET = %#lx, PLT_ENTRY_VMA = %#lx, \ |
2195 | GOT_ENTRY_OFFSET = %#lx, GOT_ENTRY_VMA = %#lx, for symbol %s\n", | |
2196 | (long) h->plt.offset, | |
2197 | (long) (htab->splt->output_section->vma | |
2198 | + htab->splt->output_offset | |
2199 | + h->plt.offset), | |
2200 | (long) got_offset, | |
2201 | (long) (htab->sgotplt->output_section->vma | |
2202 | + htab->sgotplt->output_offset | |
2203 | + got_offset), | |
34e967a5 MC |
2204 | h->root.root.string); |
2205 | ||
1e5885b7 CZ |
2206 | { |
2207 | bfd_vma i = 0; | |
2208 | uint16_t *ptr = (uint16_t *) plt_data->elem; | |
f7e8b360 | 2209 | |
1e5885b7 CZ |
2210 | for (i = 0; i < plt_data->elem_size/2; i++) |
2211 | { | |
2212 | uint16_t data = ptr[i]; | |
2213 | bfd_put_16 (output_bfd, | |
2214 | (bfd_vma) data, | |
2215 | htab->splt->contents + h->plt.offset + (i*2)); | |
2216 | } | |
2217 | } | |
2218 | ||
34e967a5 MC |
2219 | plt_do_relocs_for_symbol (output_bfd, htab, |
2220 | plt_data->elem_relocs, | |
2221 | h->plt.offset, | |
886a2506 | 2222 | got_offset); |
34e967a5 MC |
2223 | |
2224 | /* Fill in the entry in the global offset table. */ | |
2225 | bfd_put_32 (output_bfd, | |
2226 | (bfd_vma) (htab->splt->output_section->vma | |
2227 | + htab->splt->output_offset), | |
2228 | htab->sgotplt->contents + got_offset); | |
2229 | ||
2230 | /* TODO: Fill in the entry in the .rela.plt section. */ | |
2231 | { | |
2232 | Elf_Internal_Rela rel; | |
2233 | bfd_byte *loc; | |
2234 | ||
2235 | rel.r_offset = (htab->sgotplt->output_section->vma | |
2236 | + htab->sgotplt->output_offset | |
2237 | + got_offset); | |
2238 | rel.r_addend = 0; | |
94e5c971 CZ |
2239 | |
2240 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
2241 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT); |
2242 | ||
2243 | loc = htab->srelplt->contents; | |
2244 | loc += plt_index * sizeof (Elf32_External_Rela); /* relA */ | |
2245 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
2246 | } | |
886a2506 NC |
2247 | } |
2248 | ||
2249 | static void | |
34e967a5 MC |
2250 | relocate_plt_for_entry (bfd *abfd, |
2251 | struct bfd_link_info *info) | |
886a2506 | 2252 | { |
34e967a5 MC |
2253 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
2254 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
886a2506 | 2255 | |
1e5885b7 CZ |
2256 | { |
2257 | bfd_vma i = 0; | |
2258 | uint16_t *ptr = (uint16_t *) plt_data->entry; | |
2259 | for (i = 0; i < plt_data->entry_size/2; i++) | |
2260 | { | |
2261 | uint16_t data = ptr[i]; | |
2262 | bfd_put_16 (abfd, | |
2263 | (bfd_vma) data, | |
2264 | htab->splt->contents + (i*2)); | |
2265 | } | |
2266 | } | |
34e967a5 | 2267 | PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs); |
886a2506 NC |
2268 | } |
2269 | ||
34e967a5 MC |
2270 | /* Desc : Adjust a symbol defined by a dynamic object and referenced |
2271 | by a regular object. The current definition is in some section of | |
2272 | the dynamic object, but we're not including those sections. We | |
2273 | have to change the definition to something the rest of the link can | |
886a2506 NC |
2274 | understand. */ |
2275 | ||
2276 | static bfd_boolean | |
2277 | elf_arc_adjust_dynamic_symbol (struct bfd_link_info *info, | |
2278 | struct elf_link_hash_entry *h) | |
2279 | { | |
34e967a5 | 2280 | asection *s; |
886a2506 | 2281 | bfd *dynobj = (elf_hash_table (info))->dynobj; |
34e967a5 | 2282 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2283 | |
34e967a5 MC |
2284 | if (h->type == STT_FUNC |
2285 | || h->type == STT_GNU_IFUNC | |
2286 | || h->needs_plt == 1) | |
886a2506 NC |
2287 | { |
2288 | if (!bfd_link_pic (info) && !h->def_dynamic && !h->ref_dynamic) | |
2289 | { | |
2290 | /* This case can occur if we saw a PLT32 reloc in an input | |
2291 | file, but the symbol was never referred to by a dynamic | |
2292 | object. In such a case, we don't actually need to build | |
2293 | a procedure linkage table, and we can just do a PC32 | |
2294 | reloc instead. */ | |
2295 | BFD_ASSERT (h->needs_plt); | |
2296 | return TRUE; | |
2297 | } | |
2298 | ||
2299 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2300 | if (h->dynindx == -1 && !h->forced_local | |
2301 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
2302 | return FALSE; | |
2303 | ||
34e967a5 MC |
2304 | if (bfd_link_pic (info) |
2305 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
886a2506 NC |
2306 | { |
2307 | bfd_vma loc = add_symbol_to_plt (info); | |
2308 | ||
08759e0f | 2309 | if (bfd_link_executable (info) && !h->def_regular) |
886a2506 | 2310 | { |
34e967a5 | 2311 | h->root.u.def.section = htab->splt; |
886a2506 NC |
2312 | h->root.u.def.value = loc; |
2313 | } | |
2314 | h->plt.offset = loc; | |
2315 | } | |
34e967a5 MC |
2316 | else |
2317 | { | |
2318 | h->plt.offset = (bfd_vma) -1; | |
2319 | h->needs_plt = 0; | |
2320 | } | |
2321 | return TRUE; | |
886a2506 | 2322 | } |
34e967a5 MC |
2323 | |
2324 | /* If this is a weak symbol, and there is a real definition, the | |
2325 | processor independent code will have arranged for us to see the | |
2326 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2327 | if (h->is_weakalias) |
886a2506 | 2328 | { |
60d67dc8 AM |
2329 | struct elf_link_hash_entry *def = weakdef (h); |
2330 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2331 | h->root.u.def.section = def->root.u.def.section; | |
2332 | h->root.u.def.value = def->root.u.def.value; | |
34e967a5 | 2333 | return TRUE; |
886a2506 NC |
2334 | } |
2335 | ||
34e967a5 MC |
2336 | /* This is a reference to a symbol defined by a dynamic object which |
2337 | is not a function. */ | |
2338 | ||
2339 | /* If we are creating a shared library, we must presume that the | |
2340 | only references to the symbol are via the global offset table. | |
2341 | For such cases we need not do anything here; the relocations will | |
2342 | be handled correctly by relocate_section. */ | |
3c8adaca CZ |
2343 | if (!bfd_link_executable (info)) |
2344 | return TRUE; | |
2345 | ||
2346 | /* If there are no non-GOT references, we do not need a copy | |
2347 | relocation. */ | |
2348 | if (!h->non_got_ref) | |
34e967a5 MC |
2349 | return TRUE; |
2350 | ||
3c8adaca CZ |
2351 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2352 | if (info->nocopyreloc) | |
2353 | { | |
2354 | h->non_got_ref = 0; | |
2355 | return TRUE; | |
2356 | } | |
2357 | ||
34e967a5 MC |
2358 | /* We must allocate the symbol in our .dynbss section, which will |
2359 | become part of the .bss section of the executable. There will be | |
2360 | an entry for this symbol in the .dynsym section. The dynamic | |
2361 | object will contain position independent code, so all references | |
2362 | from the dynamic object to this symbol will go through the global | |
2363 | offset table. The dynamic linker will use the .dynsym entry to | |
2364 | determine the address it must put in the global offset table, so | |
2365 | both the dynamic object and the regular object will refer to the | |
2366 | same memory location for the variable. */ | |
2367 | ||
3c8adaca CZ |
2368 | if (htab == NULL) |
2369 | return FALSE; | |
34e967a5 MC |
2370 | |
2371 | /* We must generate a R_ARC_COPY reloc to tell the dynamic linker to | |
2372 | copy the initial value out of the dynamic object and into the | |
2373 | runtime process image. We need to remember the offset into the | |
2374 | .rela.bss section we are going to use. */ | |
2375 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2376 | { | |
8a36df4d | 2377 | struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info); |
34e967a5 | 2378 | |
9d19e4fd AM |
2379 | BFD_ASSERT (arc_htab->elf.srelbss != NULL); |
2380 | arc_htab->elf.srelbss->size += sizeof (Elf32_External_Rela); | |
34e967a5 MC |
2381 | h->needs_copy = 1; |
2382 | } | |
2383 | ||
8a36df4d | 2384 | /* TODO: Move this also to arc_hash_table. */ |
3c8adaca CZ |
2385 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
2386 | BFD_ASSERT (s != NULL); | |
34e967a5 | 2387 | |
3c8adaca | 2388 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
886a2506 NC |
2389 | } |
2390 | ||
2391 | /* Function : elf_arc_finish_dynamic_symbol | |
2392 | Brief : Finish up dynamic symbol handling. We set the | |
34e967a5 | 2393 | contents of various dynamic sections here. |
886a2506 | 2394 | Args : output_bfd : |
34e967a5 MC |
2395 | info : |
2396 | h : | |
2397 | sym : | |
886a2506 | 2398 | Returns : True/False as the return status. */ |
34e967a5 | 2399 | |
886a2506 NC |
2400 | static bfd_boolean |
2401 | elf_arc_finish_dynamic_symbol (bfd * output_bfd, | |
2402 | struct bfd_link_info *info, | |
2403 | struct elf_link_hash_entry *h, | |
2404 | Elf_Internal_Sym * sym) | |
2405 | { | |
34e967a5 | 2406 | if (h->plt.offset != (bfd_vma) -1) |
886a2506 | 2407 | { |
34e967a5 MC |
2408 | relocate_plt_for_symbol (output_bfd, info, h); |
2409 | ||
2410 | if (!h->def_regular) | |
886a2506 | 2411 | { |
34e967a5 MC |
2412 | /* Mark the symbol as undefined, rather than as defined in |
2413 | the .plt section. Leave the value alone. */ | |
2414 | sym->st_shndx = SHN_UNDEF; | |
886a2506 | 2415 | } |
34e967a5 MC |
2416 | } |
2417 | ||
34e967a5 | 2418 | |
08759e0f CM |
2419 | /* This function traverses list of GOT entries and |
2420 | create respective dynamic relocs. */ | |
2421 | /* TODO: Make function to get list and not access the list directly. */ | |
2422 | /* TODO: Move function to relocate_section create this relocs eagerly. */ | |
2423 | create_got_dynrelocs_for_got_info (&h->got.glist, | |
2424 | output_bfd, | |
2425 | info, | |
2426 | h); | |
34e967a5 MC |
2427 | |
2428 | if (h->needs_copy) | |
2429 | { | |
8a36df4d CM |
2430 | struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info); |
2431 | ||
2432 | if (h->dynindx == -1 | |
2433 | || (h->root.type != bfd_link_hash_defined | |
2434 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 2435 | || arc_htab->elf.srelbss == NULL) |
8a36df4d CM |
2436 | abort (); |
2437 | ||
34e967a5 MC |
2438 | bfd_vma rel_offset = (h->root.u.def.value |
2439 | + h->root.u.def.section->output_section->vma | |
2440 | + h->root.u.def.section->output_offset); | |
2441 | ||
9d19e4fd AM |
2442 | bfd_byte * loc = arc_htab->elf.srelbss->contents |
2443 | + (arc_htab->elf.srelbss->reloc_count * sizeof (Elf32_External_Rela)); | |
2444 | arc_htab->elf.srelbss->reloc_count++; | |
34e967a5 MC |
2445 | |
2446 | Elf_Internal_Rela rel; | |
2447 | rel.r_addend = 0; | |
2448 | rel.r_offset = rel_offset; | |
94e5c971 CZ |
2449 | |
2450 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
2451 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY); |
2452 | ||
23a42089 | 2453 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
886a2506 NC |
2454 | } |
2455 | ||
2456 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2457 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2458 | || strcmp (h->root.root.string, "__DYNAMIC") == 0 | |
2459 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2460 | sym->st_shndx = SHN_ABS; | |
2461 | ||
2462 | return TRUE; | |
2463 | } | |
2464 | ||
4ade44b7 | 2465 | #define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION) \ |
34e967a5 MC |
2466 | case TAG: \ |
2467 | if (SYMBOL != NULL) \ | |
4ade44b7 AM |
2468 | h = elf_link_hash_lookup (elf_hash_table (info), \ |
2469 | SYMBOL, FALSE, FALSE, TRUE); \ | |
34e967a5 | 2470 | else if (SECTION != NULL) \ |
4ade44b7 | 2471 | s = bfd_get_linker_section (dynobj, SECTION); \ |
34e967a5 | 2472 | break; |
886a2506 NC |
2473 | |
2474 | /* Function : elf_arc_finish_dynamic_sections | |
2475 | Brief : Finish up the dynamic sections handling. | |
2476 | Args : output_bfd : | |
34e967a5 MC |
2477 | info : |
2478 | h : | |
2479 | sym : | |
886a2506 | 2480 | Returns : True/False as the return status. */ |
34e967a5 | 2481 | |
886a2506 | 2482 | static bfd_boolean |
34e967a5 MC |
2483 | elf_arc_finish_dynamic_sections (bfd * output_bfd, |
2484 | struct bfd_link_info *info) | |
886a2506 | 2485 | { |
34e967a5 | 2486 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2487 | bfd *dynobj = (elf_hash_table (info))->dynobj; |
034fed0b | 2488 | asection *sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
886a2506 | 2489 | |
034fed0b | 2490 | if (sdyn) |
886a2506 NC |
2491 | { |
2492 | Elf32_External_Dyn *dyncon, *dynconend; | |
2493 | ||
034fed0b | 2494 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
08759e0f | 2495 | dynconend |
034fed0b | 2496 | = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
886a2506 NC |
2497 | for (; dyncon < dynconend; dyncon++) |
2498 | { | |
2499 | Elf_Internal_Dyn internal_dyn; | |
2500 | bfd_boolean do_it = FALSE; | |
2501 | ||
2502 | struct elf_link_hash_entry *h = NULL; | |
2503 | asection *s = NULL; | |
2504 | ||
2505 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &internal_dyn); | |
2506 | ||
2507 | switch (internal_dyn.d_tag) | |
2508 | { | |
65b94e90 CM |
2509 | GET_SYMBOL_OR_SECTION (DT_INIT, info->init_function, NULL) |
2510 | GET_SYMBOL_OR_SECTION (DT_FINI, info->fini_function, NULL) | |
4ade44b7 AM |
2511 | GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt") |
2512 | GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt") | |
2513 | GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt") | |
4ade44b7 AM |
2514 | GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version") |
2515 | GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d") | |
2516 | GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r") | |
886a2506 NC |
2517 | default: |
2518 | break; | |
2519 | } | |
2520 | ||
34e967a5 | 2521 | /* In case the dynamic symbols should be updated with a symbol. */ |
886a2506 NC |
2522 | if (h != NULL |
2523 | && (h->root.type == bfd_link_hash_defined | |
34e967a5 | 2524 | || h->root.type == bfd_link_hash_defweak)) |
886a2506 NC |
2525 | { |
2526 | asection *asec_ptr; | |
2527 | ||
2528 | internal_dyn.d_un.d_val = h->root.u.def.value; | |
2529 | asec_ptr = h->root.u.def.section; | |
2530 | if (asec_ptr->output_section != NULL) | |
2531 | { | |
2532 | internal_dyn.d_un.d_val += | |
08759e0f CM |
2533 | (asec_ptr->output_section->vma |
2534 | + asec_ptr->output_offset); | |
886a2506 NC |
2535 | } |
2536 | else | |
2537 | { | |
34e967a5 MC |
2538 | /* The symbol is imported from another shared |
2539 | library and does not apply to this one. */ | |
886a2506 NC |
2540 | internal_dyn.d_un.d_val = 0; |
2541 | } | |
2542 | do_it = TRUE; | |
2543 | } | |
2544 | else if (s != NULL) /* With a section information. */ | |
2545 | { | |
2546 | switch (internal_dyn.d_tag) | |
2547 | { | |
2548 | case DT_PLTGOT: | |
2549 | case DT_JMPREL: | |
34e967a5 MC |
2550 | case DT_VERSYM: |
2551 | case DT_VERDEF: | |
2552 | case DT_VERNEED: | |
4ade44b7 AM |
2553 | internal_dyn.d_un.d_ptr = (s->output_section->vma |
2554 | + s->output_offset); | |
886a2506 NC |
2555 | do_it = TRUE; |
2556 | break; | |
2557 | ||
2558 | case DT_PLTRELSZ: | |
2559 | internal_dyn.d_un.d_val = s->size; | |
2560 | do_it = TRUE; | |
2561 | break; | |
2562 | ||
886a2506 NC |
2563 | default: |
2564 | break; | |
2565 | } | |
2566 | } | |
2567 | ||
4ade44b7 | 2568 | if (do_it) |
886a2506 NC |
2569 | bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon); |
2570 | } | |
2571 | ||
34e967a5 | 2572 | if (htab->splt->size > 0) |
886a2506 | 2573 | { |
34e967a5 | 2574 | relocate_plt_for_entry (output_bfd, info); |
886a2506 NC |
2575 | } |
2576 | ||
34e967a5 | 2577 | /* TODO: Validate this. */ |
034fed0b AM |
2578 | if (htab->srelplt->output_section != bfd_abs_section_ptr) |
2579 | elf_section_data (htab->srelplt->output_section) | |
2580 | ->this_hdr.sh_entsize = 12; | |
886a2506 NC |
2581 | } |
2582 | ||
2583 | /* Fill in the first three entries in the global offset table. */ | |
34e967a5 | 2584 | if (htab->sgot) |
886a2506 | 2585 | { |
3b63d2ce CM |
2586 | struct elf_link_hash_entry *h; |
2587 | h = elf_link_hash_lookup (elf_hash_table (info), "_GLOBAL_OFFSET_TABLE_", | |
2588 | FALSE, FALSE, TRUE); | |
2589 | ||
2590 | if (h != NULL && h->root.type != bfd_link_hash_undefined | |
2591 | && h->root.u.def.section != NULL) | |
886a2506 | 2592 | { |
3b63d2ce CM |
2593 | asection *sec = h->root.u.def.section; |
2594 | ||
034fed0b | 2595 | if (sdyn == NULL) |
886a2506 | 2596 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3b63d2ce | 2597 | sec->contents); |
886a2506 NC |
2598 | else |
2599 | bfd_put_32 (output_bfd, | |
034fed0b | 2600 | sdyn->output_section->vma + sdyn->output_offset, |
3b63d2ce CM |
2601 | sec->contents); |
2602 | bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 4); | |
2603 | bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 8); | |
886a2506 NC |
2604 | } |
2605 | } | |
2606 | ||
886a2506 NC |
2607 | return TRUE; |
2608 | } | |
2609 | ||
34e967a5 MC |
2610 | #define ADD_DYNAMIC_SYMBOL(NAME, TAG) \ |
2611 | h = elf_link_hash_lookup (elf_hash_table (info), \ | |
2612 | NAME, FALSE, FALSE, FALSE); \ | |
2613 | if ((h != NULL && (h->ref_regular || h->def_regular))) \ | |
2614 | if (! _bfd_elf_add_dynamic_entry (info, TAG, 0)) \ | |
886a2506 NC |
2615 | return FALSE; |
2616 | ||
2617 | /* Set the sizes of the dynamic sections. */ | |
2618 | static bfd_boolean | |
034fed0b | 2619 | elf_arc_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
34e967a5 | 2620 | struct bfd_link_info *info) |
886a2506 | 2621 | { |
034fed0b AM |
2622 | bfd *dynobj; |
2623 | asection *s; | |
2624 | bfd_boolean relocs_exist = FALSE; | |
2625 | bfd_boolean reltext_exist = FALSE; | |
34e967a5 | 2626 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2627 | |
034fed0b | 2628 | dynobj = htab->dynobj; |
886a2506 NC |
2629 | BFD_ASSERT (dynobj != NULL); |
2630 | ||
034fed0b | 2631 | if (htab->dynamic_sections_created) |
886a2506 NC |
2632 | { |
2633 | struct elf_link_hash_entry *h; | |
2634 | ||
34e967a5 MC |
2635 | /* Set the contents of the .interp section to the |
2636 | interpreter. */ | |
034fed0b | 2637 | if (bfd_link_executable (info) && !info->nointerp) |
886a2506 NC |
2638 | { |
2639 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2640 | BFD_ASSERT (s != NULL); | |
34e967a5 | 2641 | s->size = sizeof (ELF_DYNAMIC_INTERPRETER); |
886a2506 NC |
2642 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2643 | } | |
2644 | ||
34e967a5 MC |
2645 | /* Add some entries to the .dynamic section. We fill in some of |
2646 | the values later, in elf_bfd_final_link, but we must add the | |
2647 | entries now so that we know the final size of the .dynamic | |
2648 | section. Checking if the .init section is present. We also | |
2649 | create DT_INIT and DT_FINI entries if the init_str has been | |
2650 | changed by the user. */ | |
65b94e90 CM |
2651 | ADD_DYNAMIC_SYMBOL (info->init_function, DT_INIT); |
2652 | ADD_DYNAMIC_SYMBOL (info->fini_function, DT_FINI); | |
886a2506 NC |
2653 | } |
2654 | else | |
2655 | { | |
34e967a5 MC |
2656 | /* We may have created entries in the .rela.got section. |
2657 | However, if we are not creating the dynamic sections, we will | |
2658 | not actually use these entries. Reset the size of .rela.got, | |
2659 | which will cause it to get stripped from the output file | |
2660 | below. */ | |
2661 | if (htab->srelgot != NULL) | |
2662 | htab->srelgot->size = 0; | |
886a2506 NC |
2663 | } |
2664 | ||
2665 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2666 | { | |
34e967a5 | 2667 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
886a2506 NC |
2668 | continue; |
2669 | ||
034fed0b AM |
2670 | if (s == htab->splt |
2671 | || s == htab->sgot | |
2672 | || s == htab->sgotplt | |
2673 | || s == htab->sdynbss) | |
886a2506 | 2674 | { |
034fed0b AM |
2675 | /* Strip this section if we don't need it. */ |
2676 | } | |
2677 | else if (strncmp (s->name, ".rela", 5) == 0) | |
2678 | { | |
2679 | if (s->size != 0 && s != htab->srelplt) | |
34e967a5 | 2680 | { |
034fed0b | 2681 | if (!reltext_exist) |
34e967a5 | 2682 | { |
034fed0b AM |
2683 | const char *name = s->name + 5; |
2684 | bfd *ibfd; | |
2685 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) | |
64aa8e03 CM |
2686 | if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour |
2687 | && ibfd->flags & DYNAMIC) | |
034fed0b AM |
2688 | { |
2689 | asection *target = bfd_get_section_by_name (ibfd, name); | |
2690 | if (target != NULL | |
2691 | && elf_section_data (target)->sreloc == s | |
2692 | && ((target->output_section->flags | |
2693 | & (SEC_READONLY | SEC_ALLOC)) | |
2694 | == (SEC_READONLY | SEC_ALLOC))) | |
2695 | { | |
2696 | reltext_exist = TRUE; | |
2697 | break; | |
2698 | } | |
2699 | } | |
34e967a5 | 2700 | } |
034fed0b | 2701 | relocs_exist = TRUE; |
34e967a5 | 2702 | } |
886a2506 | 2703 | |
34e967a5 MC |
2704 | /* We use the reloc_count field as a counter if we need to |
2705 | copy relocs into the output file. */ | |
2706 | s->reloc_count = 0; | |
886a2506 | 2707 | } |
034fed0b AM |
2708 | else |
2709 | { | |
2710 | /* It's not one of our sections, so don't allocate space. */ | |
2711 | continue; | |
2712 | } | |
34e967a5 | 2713 | |
034fed0b AM |
2714 | if (s->size == 0) |
2715 | { | |
2716 | s->flags |= SEC_EXCLUDE; | |
2717 | continue; | |
2718 | } | |
34e967a5 | 2719 | |
034fed0b AM |
2720 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2721 | continue; | |
34e967a5 | 2722 | |
034fed0b AM |
2723 | /* Allocate memory for the section contents. */ |
2724 | s->contents = bfd_zalloc (dynobj, s->size); | |
2725 | if (s->contents == NULL) | |
34e967a5 | 2726 | return FALSE; |
886a2506 NC |
2727 | } |
2728 | ||
034fed0b | 2729 | if (htab->dynamic_sections_created) |
886a2506 | 2730 | { |
34e967a5 MC |
2731 | /* TODO: Check if this is needed. */ |
2732 | if (!bfd_link_pic (info)) | |
2733 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2734 | return FALSE; | |
2735 | ||
2736 | if (htab->splt && (htab->splt->flags & SEC_EXCLUDE) == 0) | |
886a2506 NC |
2737 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
2738 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2739 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
034fed0b | 2740 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) |
886a2506 NC |
2741 | return FALSE; |
2742 | ||
034fed0b | 2743 | if (relocs_exist) |
886a2506 NC |
2744 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
2745 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
2ab2f40d | 2746 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, |
034fed0b | 2747 | sizeof (Elf32_External_Rela))) |
886a2506 NC |
2748 | return FALSE; |
2749 | ||
034fed0b | 2750 | if (reltext_exist) |
886a2506 NC |
2751 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
2752 | return FALSE; | |
2753 | } | |
2754 | ||
2755 | return TRUE; | |
2756 | } | |
2757 | ||
0f7f3789 CM |
2758 | |
2759 | /* Classify dynamic relocs such that -z combreloc can reorder and combine | |
2760 | them. */ | |
2761 | static enum elf_reloc_type_class | |
2762 | elf32_arc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2763 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2764 | const Elf_Internal_Rela *rela) | |
2765 | { | |
2766 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2767 | { | |
2768 | case R_ARC_RELATIVE: | |
2769 | return reloc_class_relative; | |
2770 | case R_ARC_JMP_SLOT: | |
2771 | return reloc_class_plt; | |
2772 | case R_ARC_COPY: | |
2773 | return reloc_class_copy; | |
2774 | /* TODO: Needed in future to support ifunc. */ | |
2775 | /* | |
2776 | case R_ARC_IRELATIVE: | |
2777 | return reloc_class_ifunc; | |
2778 | */ | |
2779 | default: | |
2780 | return reloc_class_normal; | |
2781 | } | |
2782 | } | |
2783 | ||
34e967a5 MC |
2784 | const struct elf_size_info arc_elf32_size_info = |
2785 | { | |
2786 | sizeof (Elf32_External_Ehdr), | |
2787 | sizeof (Elf32_External_Phdr), | |
2788 | sizeof (Elf32_External_Shdr), | |
2789 | sizeof (Elf32_External_Rel), | |
2790 | sizeof (Elf32_External_Rela), | |
2791 | sizeof (Elf32_External_Sym), | |
2792 | sizeof (Elf32_External_Dyn), | |
2793 | sizeof (Elf_External_Note), | |
2794 | 4, | |
2795 | 1, | |
2796 | 32, 2, | |
2797 | ELFCLASS32, EV_CURRENT, | |
2798 | bfd_elf32_write_out_phdrs, | |
2799 | bfd_elf32_write_shdrs_and_ehdr, | |
2800 | bfd_elf32_checksum_contents, | |
2801 | bfd_elf32_write_relocs, | |
2802 | bfd_elf32_swap_symbol_in, | |
2803 | bfd_elf32_swap_symbol_out, | |
2804 | bfd_elf32_slurp_reloc_table, | |
2805 | bfd_elf32_slurp_symbol_table, | |
2806 | bfd_elf32_swap_dyn_in, | |
2807 | bfd_elf32_swap_dyn_out, | |
2808 | bfd_elf32_swap_reloc_in, | |
2809 | bfd_elf32_swap_reloc_out, | |
2810 | bfd_elf32_swap_reloca_in, | |
2811 | bfd_elf32_swap_reloca_out | |
2812 | }; | |
2813 | ||
2814 | #define elf_backend_size_info arc_elf32_size_info | |
2815 | ||
47f7f636 AK |
2816 | /* GDB expects general purpose registers to be in section .reg. However Linux |
2817 | kernel doesn't create this section and instead writes registers to NOTE | |
2818 | section. It is up to the binutils to create a pseudo-section .reg from the | |
2819 | contents of NOTE. Also BFD will read pid and signal number from NOTE. This | |
2820 | function relies on offsets inside elf_prstatus structure in Linux to be | |
2821 | stable. */ | |
2822 | ||
2823 | static bfd_boolean | |
2824 | elf32_arc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2825 | { | |
2826 | int offset; | |
2827 | size_t size; | |
2828 | ||
2829 | switch (note->descsz) | |
2830 | { | |
2831 | default: | |
2832 | return FALSE; | |
2833 | ||
2834 | case 236: /* sizeof (struct elf_prstatus) on Linux/arc. */ | |
2835 | /* pr_cursig */ | |
2836 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
2837 | /* pr_pid */ | |
2838 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
2839 | /* pr_regs */ | |
2840 | offset = 72; | |
2841 | size = (40 * 4); /* There are 40 registers in user_regs_struct. */ | |
2842 | break; | |
2843 | } | |
2844 | /* Make a ".reg/999" section. */ | |
2845 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, | |
2846 | note->descpos + offset); | |
2847 | } | |
2848 | ||
53a346d8 CZ |
2849 | /* Determine whether an object attribute tag takes an integer, a |
2850 | string or both. */ | |
2851 | ||
2852 | static int | |
2853 | elf32_arc_obj_attrs_arg_type (int tag) | |
2854 | { | |
2855 | if (tag == Tag_ARC_CPU_name | |
2856 | || tag == Tag_ARC_ISA_config | |
2857 | || tag == Tag_ARC_ISA_apex) | |
2858 | return ATTR_TYPE_FLAG_STR_VAL; | |
2859 | else if (tag < (Tag_ARC_ISA_mpy_option + 1)) | |
2860 | return ATTR_TYPE_FLAG_INT_VAL; | |
2861 | else | |
2862 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; | |
2863 | } | |
2864 | ||
2865 | /* Attribute numbers >=14 can be safely ignored. */ | |
2866 | ||
2867 | static bfd_boolean | |
2868 | elf32_arc_obj_attrs_handle_unknown (bfd *abfd, int tag) | |
2869 | { | |
2870 | if ((tag & 127) < (Tag_ARC_ISA_mpy_option + 1)) | |
2871 | { | |
2872 | _bfd_error_handler | |
38f14ab8 | 2873 | (_("%pB: unknown mandatory ARC object attribute %d"), |
53a346d8 CZ |
2874 | abfd, tag); |
2875 | bfd_set_error (bfd_error_bad_value); | |
2876 | return FALSE; | |
2877 | } | |
2878 | else | |
2879 | { | |
2880 | _bfd_error_handler | |
38f14ab8 | 2881 | (_("warning: %pB: unknown ARC object attribute %d"), |
53a346d8 CZ |
2882 | abfd, tag); |
2883 | return TRUE; | |
2884 | } | |
2885 | } | |
2886 | ||
2887 | /* Handle an ARC specific section when reading an object file. This is | |
2888 | called when bfd_section_from_shdr finds a section with an unknown | |
2889 | type. */ | |
2890 | ||
2891 | static bfd_boolean | |
2892 | elf32_arc_section_from_shdr (bfd *abfd, | |
2893 | Elf_Internal_Shdr * hdr, | |
2894 | const char *name, | |
2895 | int shindex) | |
2896 | { | |
2897 | switch (hdr->sh_type) | |
2898 | { | |
6af04484 | 2899 | case 0x0c: /* MWDT specific section, don't complain about it. */ |
53a346d8 CZ |
2900 | case SHT_ARC_ATTRIBUTES: |
2901 | break; | |
2902 | ||
2903 | default: | |
2904 | return FALSE; | |
2905 | } | |
2906 | ||
2907 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
2908 | return FALSE; | |
2909 | ||
2910 | return TRUE; | |
2911 | } | |
2912 | ||
6d00b590 | 2913 | #define TARGET_LITTLE_SYM arc_elf32_le_vec |
47b0e7ad | 2914 | #define TARGET_LITTLE_NAME "elf32-littlearc" |
886a2506 NC |
2915 | #define TARGET_BIG_SYM arc_elf32_be_vec |
2916 | #define TARGET_BIG_NAME "elf32-bigarc" | |
2917 | #define ELF_ARCH bfd_arch_arc | |
8a36df4d | 2918 | #define ELF_TARGET_ID ARC_ELF_DATA |
886a2506 NC |
2919 | #define ELF_MACHINE_CODE EM_ARC_COMPACT |
2920 | #define ELF_MACHINE_ALT1 EM_ARC_COMPACT2 | |
2921 | #define ELF_MAXPAGESIZE 0x2000 | |
2922 | ||
34e967a5 MC |
2923 | #define bfd_elf32_bfd_link_hash_table_create arc_elf_link_hash_table_create |
2924 | ||
2925 | #define bfd_elf32_bfd_merge_private_bfd_data arc_elf_merge_private_bfd_data | |
2926 | #define bfd_elf32_bfd_reloc_type_lookup arc_elf32_bfd_reloc_type_lookup | |
2927 | #define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags | |
2928 | #define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data | |
2929 | #define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data | |
2930 | ||
886a2506 NC |
2931 | #define elf_info_to_howto_rel arc_info_to_howto_rel |
2932 | #define elf_backend_object_p arc_elf_object_p | |
2933 | #define elf_backend_final_write_processing arc_elf_final_write_processing | |
2934 | ||
2935 | #define elf_backend_relocate_section elf_arc_relocate_section | |
2936 | #define elf_backend_check_relocs elf_arc_check_relocs | |
9d19e4fd | 2937 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
886a2506 | 2938 | |
0f7f3789 CM |
2939 | #define elf_backend_reloc_type_class elf32_arc_reloc_type_class |
2940 | ||
886a2506 NC |
2941 | #define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol |
2942 | #define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol | |
2943 | ||
2944 | #define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections | |
2945 | #define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections | |
2946 | ||
2947 | #define elf_backend_can_gc_sections 1 | |
2948 | #define elf_backend_want_got_plt 1 | |
2949 | #define elf_backend_plt_readonly 1 | |
34e967a5 | 2950 | #define elf_backend_rela_plts_and_copies_p 1 |
886a2506 NC |
2951 | #define elf_backend_want_plt_sym 0 |
2952 | #define elf_backend_got_header_size 12 | |
64f52338 | 2953 | #define elf_backend_dtrel_excludes_plt 1 |
886a2506 NC |
2954 | |
2955 | #define elf_backend_may_use_rel_p 0 | |
2956 | #define elf_backend_may_use_rela_p 1 | |
2957 | #define elf_backend_default_use_rela_p 1 | |
252b5132 | 2958 | |
47f7f636 AK |
2959 | #define elf_backend_grok_prstatus elf32_arc_grok_prstatus |
2960 | ||
3c8adaca CZ |
2961 | #define elf_backend_default_execstack 0 |
2962 | ||
53a346d8 CZ |
2963 | #undef elf_backend_obj_attrs_vendor |
2964 | #define elf_backend_obj_attrs_vendor "ARC" | |
2965 | #undef elf_backend_obj_attrs_section | |
2966 | #define elf_backend_obj_attrs_section ".ARC.attributes" | |
2967 | #undef elf_backend_obj_attrs_arg_type | |
2968 | #define elf_backend_obj_attrs_arg_type elf32_arc_obj_attrs_arg_type | |
2969 | #undef elf_backend_obj_attrs_section_type | |
2970 | #define elf_backend_obj_attrs_section_type SHT_ARC_ATTRIBUTES | |
07d6d2b8 | 2971 | #define elf_backend_obj_attrs_handle_unknown elf32_arc_obj_attrs_handle_unknown |
53a346d8 | 2972 | |
07d6d2b8 | 2973 | #define elf_backend_section_from_shdr elf32_arc_section_from_shdr |
53a346d8 | 2974 | |
252b5132 | 2975 | #include "elf32-target.h" |