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 | ||
854b8506 CM |
163 | /* ARC ELF linker hash entry. */ |
164 | struct elf_arc_link_hash_entry | |
165 | { | |
166 | struct elf_link_hash_entry root; | |
167 | ||
168 | /* Track dynamic relocs copied for this symbol. */ | |
169 | struct elf_dyn_relocs *dyn_relocs; | |
170 | ||
171 | struct got_entry *got_ents; | |
172 | }; | |
173 | ||
174 | ||
08759e0f | 175 | /* Should be included at this location due to static declarations |
68d20676 | 176 | defined before this point. */ |
08759e0f CM |
177 | #include "arc-got.h" |
178 | ||
886a2506 NC |
179 | #define arc_bfd_get_8(A,B,C) bfd_get_8(A,B) |
180 | #define arc_bfd_get_16(A,B,C) bfd_get_16(A,B) | |
72f3b6aa | 181 | #define arc_bfd_get_32(A,B,C) bfd_get_32(A,B) |
886a2506 NC |
182 | #define arc_bfd_put_8(A,B,C,D) bfd_put_8(A,B,C) |
183 | #define arc_bfd_put_16(A,B,C,D) bfd_put_16(A,B,C) | |
72f3b6aa | 184 | #define arc_bfd_put_32(A,B,C,D) bfd_put_32(A,B,C) |
886a2506 | 185 | |
252b5132 | 186 | |
47b0e7ad | 187 | static bfd_reloc_status_type |
886a2506 NC |
188 | arc_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
189 | arelent *reloc_entry, | |
190 | asymbol *symbol_in, | |
191 | void *data ATTRIBUTE_UNUSED, | |
192 | asection *input_section, | |
193 | bfd *output_bfd, | |
194 | char ** error_message ATTRIBUTE_UNUSED) | |
195 | { | |
196 | if (output_bfd != NULL) | |
197 | { | |
198 | reloc_entry->address += input_section->output_offset; | |
199 | ||
200 | /* In case of relocateable link and if the reloc is against a | |
201 | section symbol, the addend needs to be adjusted according to | |
202 | where the section symbol winds up in the output section. */ | |
203 | if ((symbol_in->flags & BSF_SECTION_SYM) && symbol_in->section) | |
204 | reloc_entry->addend += symbol_in->section->output_offset; | |
205 | ||
206 | return bfd_reloc_ok; | |
207 | } | |
208 | ||
209 | return bfd_reloc_continue; | |
210 | } | |
211 | ||
212 | ||
213 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
214 | TYPE = VALUE, | |
68d20676 | 215 | |
886a2506 NC |
216 | enum howto_list |
217 | { | |
218 | #include "elf/arc-reloc.def" | |
219 | HOWTO_LIST_LAST | |
220 | }; | |
68d20676 | 221 | |
886a2506 NC |
222 | #undef ARC_RELOC_HOWTO |
223 | ||
224 | #define ARC_RELOC_HOWTO(TYPE, VALUE, RSIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
f7e8b360 NC |
225 | [TYPE] = HOWTO (R_##TYPE, 0, RSIZE, BITSIZE, FALSE, 0, \ |
226 | complain_overflow_##OVERFLOW, arc_elf_reloc, \ | |
227 | "R_" #TYPE, FALSE, 0, 0, FALSE), | |
886a2506 NC |
228 | |
229 | static struct reloc_howto_struct elf_arc_howto_table[] = | |
230 | { | |
231 | #include "elf/arc-reloc.def" | |
34e967a5 MC |
232 | /* Example of what is generated by the preprocessor. Currently kept as an |
233 | example. | |
886a2506 NC |
234 | HOWTO (R_ARC_NONE, // Type. |
235 | 0, // Rightshift. | |
236 | 2, // Size (0 = byte, 1 = short, 2 = long). | |
237 | 32, // Bitsize. | |
238 | FALSE, // PC_relative. | |
239 | 0, // Bitpos. | |
240 | complain_overflow_bitfield, // Complain_on_overflow. | |
241 | bfd_elf_generic_reloc, // Special_function. | |
242 | "R_ARC_NONE", // Name. | |
243 | TRUE, // Partial_inplace. | |
244 | 0, // Src_mask. | |
245 | 0, // Dst_mask. | |
246 | FALSE), // PCrel_offset. | |
247 | */ | |
248 | }; | |
249 | #undef ARC_RELOC_HOWTO | |
250 | ||
68d20676 NC |
251 | static void |
252 | arc_elf_howto_init (void) | |
886a2506 NC |
253 | { |
254 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
68d20676 | 255 | elf_arc_howto_table[TYPE].pc_relative = \ |
0a5ff21b | 256 | (strstr (#FORMULA, " P ") != NULL || strstr (#FORMULA, " PDATA ") != NULL); \ |
68d20676 NC |
257 | elf_arc_howto_table[TYPE].dst_mask = RELOC_FUNCTION(0, ~0); \ |
258 | /* Only 32 bit data relocations should be marked as ME. */ \ | |
259 | if (strstr (#FORMULA, " ME ") != NULL) \ | |
260 | { \ | |
261 | BFD_ASSERT (SIZE == 2); \ | |
72f3b6aa | 262 | } |
886a2506 | 263 | |
34e967a5 | 264 | #include "elf/arc-reloc.def" |
72f3b6aa | 265 | |
47b0e7ad | 266 | } |
886a2506 | 267 | #undef ARC_RELOC_HOWTO |
47b0e7ad | 268 | |
886a2506 NC |
269 | |
270 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
271 | [TYPE] = VALUE, | |
68d20676 | 272 | |
886a2506 NC |
273 | const int howto_table_lookup[] = |
274 | { | |
34e967a5 | 275 | #include "elf/arc-reloc.def" |
252b5132 | 276 | }; |
68d20676 | 277 | |
886a2506 NC |
278 | #undef ARC_RELOC_HOWTO |
279 | ||
f26dd308 AM |
280 | static reloc_howto_type * |
281 | arc_elf_howto (unsigned int r_type) | |
282 | { | |
283 | if (elf_arc_howto_table[R_ARC_32].dst_mask == 0) | |
284 | arc_elf_howto_init (); | |
285 | return &elf_arc_howto_table[r_type]; | |
286 | } | |
252b5132 RH |
287 | |
288 | /* Map BFD reloc types to ARC ELF reloc types. */ | |
289 | ||
290 | struct arc_reloc_map | |
291 | { | |
34e967a5 | 292 | bfd_reloc_code_real_type bfd_reloc_val; |
08759e0f | 293 | unsigned char elf_reloc_val; |
252b5132 RH |
294 | }; |
295 | ||
8a36df4d CM |
296 | /* ARC ELF linker hash table. */ |
297 | struct elf_arc_link_hash_table | |
298 | { | |
299 | struct elf_link_hash_table elf; | |
8a36df4d CM |
300 | }; |
301 | ||
302 | static struct bfd_hash_entry * | |
303 | elf_arc_link_hash_newfunc (struct bfd_hash_entry *entry, | |
304 | struct bfd_hash_table *table, | |
305 | const char *string) | |
306 | { | |
854b8506 CM |
307 | struct elf_arc_link_hash_entry * ret = |
308 | (struct elf_arc_link_hash_entry *) entry; | |
309 | ||
8a36df4d CM |
310 | /* Allocate the structure if it has not already been allocated by a |
311 | subclass. */ | |
854b8506 CM |
312 | if (ret == NULL) |
313 | ret = (struct elf_arc_link_hash_entry *) | |
314 | bfd_hash_allocate (table, sizeof (struct elf_arc_link_hash_entry)); | |
315 | if (ret == NULL) | |
316 | return (struct bfd_hash_entry *) ret; | |
8a36df4d CM |
317 | |
318 | /* Call the allocation method of the superclass. */ | |
854b8506 CM |
319 | ret = ((struct elf_arc_link_hash_entry *) |
320 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
321 | table, string)); | |
322 | if (ret != NULL) | |
8a36df4d | 323 | { |
854b8506 CM |
324 | ret->dyn_relocs = NULL; |
325 | ret->got_ents = NULL; | |
8a36df4d CM |
326 | } |
327 | ||
854b8506 | 328 | return (struct bfd_hash_entry *) ret; |
8a36df4d CM |
329 | } |
330 | ||
331 | /* Destroy an ARC ELF linker hash table. */ | |
332 | static void | |
333 | elf_arc_link_hash_table_free (bfd *obfd) | |
334 | { | |
335 | _bfd_elf_link_hash_table_free (obfd); | |
336 | } | |
337 | ||
338 | /* Create an ARC ELF linker hash table. */ | |
339 | ||
340 | static struct bfd_link_hash_table * | |
341 | arc_elf_link_hash_table_create (bfd *abfd) | |
342 | { | |
343 | struct elf_arc_link_hash_table *ret; | |
344 | ||
345 | ret = (struct elf_arc_link_hash_table *) bfd_zmalloc (sizeof (*ret)); | |
346 | if (ret == NULL) | |
347 | return NULL; | |
348 | ||
349 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, | |
350 | elf_arc_link_hash_newfunc, | |
351 | sizeof (struct elf_arc_link_hash_entry), | |
352 | ARC_ELF_DATA)) | |
353 | { | |
354 | free (ret); | |
355 | return NULL; | |
356 | } | |
357 | ||
8a36df4d CM |
358 | ret->elf.root.hash_table_free = elf_arc_link_hash_table_free; |
359 | ||
360 | return &ret->elf.root; | |
361 | } | |
362 | ||
886a2506 NC |
363 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
364 | { BFD_RELOC_##TYPE, R_##TYPE }, | |
68d20676 | 365 | |
252b5132 RH |
366 | static const struct arc_reloc_map arc_reloc_map[] = |
367 | { | |
34e967a5 MC |
368 | #include "elf/arc-reloc.def" |
369 | ||
886a2506 NC |
370 | {BFD_RELOC_NONE, R_ARC_NONE}, |
371 | {BFD_RELOC_8, R_ARC_8}, | |
372 | {BFD_RELOC_16, R_ARC_16}, | |
373 | {BFD_RELOC_24, R_ARC_24}, | |
374 | {BFD_RELOC_32, R_ARC_32}, | |
252b5132 | 375 | }; |
68d20676 | 376 | |
886a2506 | 377 | #undef ARC_RELOC_HOWTO |
252b5132 | 378 | |
094fb063 CZ |
379 | typedef ATTRIBUTE_UNUSED bfd_vma (*replace_func) (unsigned, int ATTRIBUTE_UNUSED); |
380 | ||
381 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
382 | case TYPE: \ | |
383 | func = (void *) RELOC_FUNCTION; \ | |
384 | break; | |
68d20676 | 385 | |
094fb063 CZ |
386 | static replace_func |
387 | get_replace_function (bfd *abfd, unsigned int r_type) | |
388 | { | |
389 | void *func = NULL; | |
390 | ||
391 | switch (r_type) | |
392 | { | |
393 | #include "elf/arc-reloc.def" | |
394 | } | |
395 | ||
396 | if (func == replace_bits24 && bfd_big_endian (abfd)) | |
68d20676 | 397 | func = replace_bits24_be; |
094fb063 CZ |
398 | |
399 | return (replace_func) func; | |
400 | } | |
401 | #undef ARC_RELOC_HOWTO | |
402 | ||
252b5132 | 403 | static reloc_howto_type * |
34e967a5 | 404 | arc_elf32_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
47b0e7ad | 405 | bfd_reloc_code_real_type code) |
252b5132 RH |
406 | { |
407 | unsigned int i; | |
408 | ||
ea04a8f6 | 409 | for (i = ARRAY_SIZE (arc_reloc_map); i--;) |
886a2506 NC |
410 | { |
411 | if (arc_reloc_map[i].bfd_reloc_val == code) | |
f26dd308 | 412 | return arc_elf_howto (arc_reloc_map[i].elf_reloc_val); |
886a2506 | 413 | } |
ea04a8f6 | 414 | |
252b5132 RH |
415 | return NULL; |
416 | } | |
417 | ||
34e967a5 MC |
418 | /* Function to set the ELF flag bits. */ |
419 | static bfd_boolean | |
420 | arc_elf_set_private_flags (bfd *abfd, flagword flags) | |
421 | { | |
422 | elf_elfheader (abfd)->e_flags = flags; | |
423 | elf_flags_init (abfd) = TRUE; | |
424 | return TRUE; | |
425 | } | |
426 | ||
427 | /* Print private flags. */ | |
428 | static bfd_boolean | |
429 | arc_elf_print_private_bfd_data (bfd *abfd, void * ptr) | |
430 | { | |
431 | FILE *file = (FILE *) ptr; | |
432 | flagword flags; | |
433 | ||
434 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
435 | ||
436 | /* Print normal ELF private data. */ | |
437 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
438 | ||
439 | flags = elf_elfheader (abfd)->e_flags; | |
440 | fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); | |
441 | ||
442 | switch (flags & EF_ARC_MACH_MSK) | |
443 | { | |
34e967a5 MC |
444 | case EF_ARC_CPU_ARCV2HS : fprintf (file, " -mcpu=ARCv2HS"); break; |
445 | case EF_ARC_CPU_ARCV2EM : fprintf (file, " -mcpu=ARCv2EM"); break; | |
446 | case E_ARC_MACH_ARC600 : fprintf (file, " -mcpu=ARC600"); break; | |
447 | case E_ARC_MACH_ARC601 : fprintf (file, " -mcpu=ARC601"); break; | |
448 | case E_ARC_MACH_ARC700 : fprintf (file, " -mcpu=ARC700"); break; | |
449 | default: | |
450 | fprintf (file, "-mcpu=unknown"); | |
451 | break; | |
452 | } | |
453 | ||
454 | switch (flags & EF_ARC_OSABI_MSK) | |
455 | { | |
456 | case E_ARC_OSABI_ORIG : fprintf (file, " (ABI:legacy)"); break; | |
457 | case E_ARC_OSABI_V2 : fprintf (file, " (ABI:v2)"); break; | |
458 | case E_ARC_OSABI_V3 : fprintf (file, " (ABI:v3)"); break; | |
53a346d8 | 459 | case E_ARC_OSABI_V4 : fprintf (file, " (ABI:v4)"); break; |
34e967a5 | 460 | default: |
53a346d8 | 461 | fprintf (file, " (ABI:unknown)"); |
34e967a5 MC |
462 | break; |
463 | } | |
464 | ||
465 | fputc ('\n', file); | |
466 | return TRUE; | |
467 | } | |
468 | ||
469 | /* Copy backend specific data from one object module to another. */ | |
470 | ||
471 | static bfd_boolean | |
472 | arc_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
473 | { | |
474 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
475 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
476 | return TRUE; | |
477 | ||
478 | BFD_ASSERT (!elf_flags_init (obfd) | |
479 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
480 | ||
481 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
482 | elf_flags_init (obfd) = TRUE; | |
483 | ||
484 | /* Copy object attributes. */ | |
485 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
486 | ||
487 | return _bfd_elf_copy_private_bfd_data (ibfd, obfd); | |
488 | } | |
489 | ||
157090f7 | 490 | static reloc_howto_type * |
34e967a5 MC |
491 | bfd_elf32_bfd_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
492 | const char *r_name) | |
157090f7 AM |
493 | { |
494 | unsigned int i; | |
495 | ||
886a2506 | 496 | for (i = 0; i < ARRAY_SIZE (elf_arc_howto_table); i++) |
157090f7 AM |
497 | if (elf_arc_howto_table[i].name != NULL |
498 | && strcasecmp (elf_arc_howto_table[i].name, r_name) == 0) | |
f26dd308 | 499 | return arc_elf_howto (i); |
157090f7 AM |
500 | |
501 | return NULL; | |
502 | } | |
503 | ||
886a2506 | 504 | /* Set the howto pointer for an ARC ELF reloc. */ |
34e967a5 | 505 | |
f3185997 NC |
506 | static bfd_boolean |
507 | arc_info_to_howto_rel (bfd * abfd, | |
886a2506 NC |
508 | arelent * cache_ptr, |
509 | Elf_Internal_Rela * dst) | |
252b5132 RH |
510 | { |
511 | unsigned int r_type; | |
512 | ||
513 | r_type = ELF32_R_TYPE (dst->r_info); | |
f3185997 NC |
514 | if (r_type >= (unsigned int) R_ARC_max) |
515 | { | |
516 | /* xgettext:c-format */ | |
517 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
518 | abfd, r_type); | |
519 | bfd_set_error (bfd_error_bad_value); | |
520 | return FALSE; | |
521 | } | |
522 | ||
f26dd308 | 523 | cache_ptr->howto = arc_elf_howto (r_type); |
f3185997 | 524 | return TRUE; |
252b5132 RH |
525 | } |
526 | ||
53a346d8 CZ |
527 | /* Extract CPU features from an NTBS. */ |
528 | ||
529 | static unsigned | |
530 | arc_extract_features (const char *p) | |
531 | { | |
532 | unsigned i, r = 0; | |
533 | ||
534 | if (!p) | |
535 | return 0; | |
536 | ||
537 | for (i = 0; i < ARRAY_SIZE (bfd_feature_list); i++) | |
538 | { | |
539 | char *t = strstr (p, bfd_feature_list[i].attr); | |
540 | unsigned l = strlen (bfd_feature_list[i].attr); | |
541 | if ((t != NULL) | |
542 | && (t[l] == ',' | |
543 | || t[l] == '\0')) | |
544 | r |= bfd_feature_list[i].feature; | |
545 | } | |
546 | ||
547 | return r; | |
548 | } | |
549 | ||
550 | /* Concatenate two strings. s1 can be NULL but not | |
551 | s2. */ | |
552 | ||
553 | static char * | |
554 | arc_stralloc (char * s1, const char * s2) | |
555 | { | |
556 | char *p; | |
557 | ||
558 | /* Only s1 can be null. */ | |
559 | BFD_ASSERT (s2); | |
560 | ||
561 | p = s1 ? concat (s1, ",", s2, NULL) : (char *)s2; | |
562 | ||
563 | return p; | |
564 | } | |
565 | ||
566 | /* Merge ARC object attributes from IBFD into OBFD. Raise an error if | |
567 | there are conflicting attributes. */ | |
568 | ||
569 | static bfd_boolean | |
570 | arc_elf_merge_attributes (bfd *ibfd, struct bfd_link_info *info) | |
571 | { | |
572 | bfd *obfd = info->output_bfd; | |
573 | obj_attribute *in_attr; | |
574 | obj_attribute *out_attr; | |
575 | int i; | |
576 | bfd_boolean result = TRUE; | |
577 | const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; | |
578 | char *tagname = NULL; | |
579 | ||
580 | /* Skip the linker stubs file. This preserves previous behavior | |
581 | of accepting unknown attributes in the first input file - but | |
582 | is that a bug? */ | |
583 | if (ibfd->flags & BFD_LINKER_CREATED) | |
584 | return TRUE; | |
585 | ||
586 | /* Skip any input that hasn't attribute section. | |
587 | This enables to link object files without attribute section with | |
588 | any others. */ | |
589 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL) | |
590 | return TRUE; | |
591 | ||
592 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
593 | { | |
594 | /* This is the first object. Copy the attributes. */ | |
595 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
596 | ||
597 | out_attr = elf_known_obj_attributes_proc (obfd); | |
598 | ||
599 | /* Use the Tag_null value to indicate the attributes have been | |
600 | initialized. */ | |
601 | out_attr[0].i = 1; | |
602 | ||
603 | return TRUE; | |
604 | } | |
605 | ||
606 | in_attr = elf_known_obj_attributes_proc (ibfd); | |
607 | out_attr = elf_known_obj_attributes_proc (obfd); | |
608 | ||
609 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) | |
610 | { | |
611 | /* Merge this attribute with existing attributes. */ | |
612 | switch (i) | |
613 | { | |
614 | case Tag_ARC_PCS_config: | |
615 | if (out_attr[i].i == 0) | |
616 | out_attr[i].i = in_attr[i].i; | |
617 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i) | |
618 | { | |
619 | const char *tagval[] = { "Absent", "Bare-metal/mwdt", | |
620 | "Bare-metal/newlib", "Linux/uclibc", | |
621 | "Linux/glibc" }; | |
622 | BFD_ASSERT (in_attr[i].i < 5); | |
623 | BFD_ASSERT (out_attr[i].i < 5); | |
624 | /* It's sometimes ok to mix different configs, so this is only | |
625 | a warning. */ | |
626 | _bfd_error_handler | |
38f14ab8 AM |
627 | (_("warning: %pB: conflicting platform configuration " |
628 | "%s with %s"), ibfd, | |
53a346d8 CZ |
629 | tagval[in_attr[i].i], |
630 | tagval[out_attr[i].i]); | |
631 | } | |
632 | break; | |
633 | ||
634 | case Tag_ARC_CPU_base: | |
635 | if (out_attr[i].i == 0) | |
636 | out_attr[i].i = in_attr[i].i; | |
637 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i | |
638 | && ((out_attr[i].i + in_attr[i].i) < 6)) | |
639 | { | |
640 | const char *tagval[] = { "Absent", "ARC6xx", "ARC7xx", | |
641 | "ARCEM", "ARCHS" }; | |
642 | BFD_ASSERT (in_attr[i].i < 5); | |
643 | BFD_ASSERT (out_attr[i].i < 5); | |
644 | /* We cannot mix code for different CPUs. */ | |
645 | _bfd_error_handler | |
871b3ab2 | 646 | (_("error: %pB: unable to merge CPU base attributes " |
38f14ab8 | 647 | "%s with %s"), |
53a346d8 CZ |
648 | obfd, |
649 | tagval[in_attr[i].i], | |
650 | tagval[out_attr[i].i]); | |
651 | result = FALSE; | |
652 | break; | |
653 | } | |
654 | else | |
655 | { | |
656 | /* The CPUs may be different, check if we can still mix | |
657 | the objects against the output choosen CPU. */ | |
658 | unsigned in_feature = 0; | |
659 | unsigned out_feature = 0; | |
660 | char *p1 = in_attr[Tag_ARC_ISA_config].s; | |
661 | char *p2 = out_attr[Tag_ARC_ISA_config].s; | |
662 | unsigned j; | |
663 | unsigned cpu_out; | |
664 | unsigned opcode_map[] = {0, ARC_OPCODE_ARC600, ARC_OPCODE_ARC700, | |
665 | ARC_OPCODE_ARCv2EM, ARC_OPCODE_ARCv2HS}; | |
666 | ||
667 | BFD_ASSERT (in_attr[i].i < (sizeof (opcode_map) | |
668 | / sizeof (unsigned))); | |
669 | BFD_ASSERT (out_attr[i].i < (sizeof (opcode_map) | |
670 | / sizeof (unsigned))); | |
671 | cpu_out = opcode_map[out_attr[i].i]; | |
672 | ||
673 | in_feature = arc_extract_features (p1); | |
674 | out_feature = arc_extract_features (p2); | |
675 | ||
676 | /* First, check if a feature is compatible with the | |
677 | output object chosen CPU. */ | |
678 | for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++) | |
679 | if (((in_feature | out_feature) & bfd_feature_list[j].feature) | |
680 | && (!(cpu_out & bfd_feature_list[j].cpus))) | |
681 | { | |
682 | _bfd_error_handler | |
871b3ab2 | 683 | (_("error: %pB: unable to merge ISA extension attributes " |
38f14ab8 | 684 | "%s"), |
53a346d8 CZ |
685 | obfd, bfd_feature_list[j].name); |
686 | result = FALSE; | |
687 | break; | |
688 | } | |
689 | /* Second, if we have compatible features with the | |
690 | chosen CPU, check if they are compatible among | |
691 | them. */ | |
692 | for (j = 0; j < ARRAY_SIZE (bfd_conflict_list); j++) | |
693 | if (((in_feature | out_feature) & bfd_conflict_list[j]) | |
694 | == bfd_conflict_list[j]) | |
695 | { | |
696 | unsigned k; | |
697 | for (k = 0; k < ARRAY_SIZE (bfd_feature_list); k++) | |
698 | { | |
699 | if (in_feature & bfd_feature_list[k].feature | |
700 | & bfd_conflict_list[j]) | |
701 | p1 = (char *) bfd_feature_list[k].name; | |
702 | if (out_feature & bfd_feature_list[k].feature | |
703 | & bfd_conflict_list[j]) | |
704 | p2 = (char *) bfd_feature_list[k].name; | |
705 | } | |
706 | _bfd_error_handler | |
871b3ab2 | 707 | (_("error: %pB: conflicting ISA extension attributes " |
38f14ab8 | 708 | "%s with %s"), |
53a346d8 CZ |
709 | obfd, p1, p2); |
710 | result = FALSE; | |
711 | break; | |
712 | } | |
713 | /* Everithing is alright. */ | |
714 | out_feature |= in_feature; | |
715 | p1 = NULL; | |
716 | for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++) | |
717 | if (out_feature & bfd_feature_list[j].feature) | |
718 | p1 = arc_stralloc (p1, bfd_feature_list[j].attr); | |
719 | if (p1) | |
720 | out_attr[Tag_ARC_ISA_config].s = | |
721 | _bfd_elf_attr_strdup (obfd, p1); | |
722 | } | |
723 | /* Fall through. */ | |
724 | case Tag_ARC_CPU_variation: | |
725 | case Tag_ARC_ISA_mpy_option: | |
726 | case Tag_ARC_ABI_osver: | |
727 | /* Use the largest value specified. */ | |
728 | if (in_attr[i].i > out_attr[i].i) | |
729 | out_attr[i].i = in_attr[i].i; | |
730 | break; | |
731 | ||
2fd43d78 | 732 | /* The CPU name is given by the vendor, just choose an |
733 | existing one if missing or different. There are no fail | |
734 | criteria if they different or both missing. */ | |
53a346d8 | 735 | case Tag_ARC_CPU_name: |
2fd43d78 | 736 | if (!out_attr[i].s && in_attr[i].s) |
737 | out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s); | |
53a346d8 CZ |
738 | break; |
739 | ||
740 | case Tag_ARC_ABI_rf16: | |
741 | if (out_attr[i].i == 0) | |
742 | out_attr[i].i = in_attr[i].i; | |
743 | else if (out_attr[i].i != in_attr[i].i) | |
744 | { | |
745 | /* We cannot mix code with rf16 and without. */ | |
746 | _bfd_error_handler | |
38f14ab8 | 747 | (_("error: %pB: cannot mix rf16 with full register set %pB"), |
53a346d8 CZ |
748 | obfd, ibfd); |
749 | result = FALSE; | |
750 | } | |
751 | break; | |
752 | ||
753 | case Tag_ARC_ABI_pic: | |
754 | tagname = "PIC"; | |
8e7f04f1 | 755 | /* fall through */ |
53a346d8 CZ |
756 | case Tag_ARC_ABI_sda: |
757 | if (!tagname) | |
758 | tagname = "SDA"; | |
8e7f04f1 | 759 | /* fall through */ |
53a346d8 CZ |
760 | case Tag_ARC_ABI_tls: |
761 | { | |
762 | const char *tagval[] = { "Absent", "MWDT", "GNU" }; | |
763 | ||
764 | if (!tagname) | |
765 | tagname = "TLS"; | |
766 | ||
767 | BFD_ASSERT (in_attr[i].i < 3); | |
768 | BFD_ASSERT (out_attr[i].i < 3); | |
2fd43d78 | 769 | if (out_attr[i].i == 0) |
770 | out_attr[i].i = in_attr[i].i; | |
771 | else if (out_attr[i].i != 0 && in_attr[i].i != 0 | |
53a346d8 CZ |
772 | && out_attr[i].i != in_attr[i].i) |
773 | { | |
774 | _bfd_error_handler | |
38f14ab8 | 775 | (_("error: %pB: conflicting attributes %s: %s with %s"), |
53a346d8 CZ |
776 | obfd, tagname, |
777 | tagval[in_attr[i].i], | |
778 | tagval[out_attr[i].i]); | |
779 | result = FALSE; | |
780 | } | |
781 | tagname = NULL; | |
782 | break; | |
783 | } | |
784 | ||
785 | case Tag_ARC_ABI_double_size: | |
786 | tagname = "Double size"; | |
8e7f04f1 | 787 | /* fall through */ |
53a346d8 CZ |
788 | case Tag_ARC_ABI_enumsize: |
789 | if (!tagname) | |
790 | tagname = "Enum size"; | |
8e7f04f1 | 791 | /* fall through */ |
53a346d8 CZ |
792 | case Tag_ARC_ABI_exceptions: |
793 | if (!tagname) | |
794 | tagname = "ABI exceptions"; | |
795 | ||
2fd43d78 | 796 | if (out_attr[i].i == 0) |
797 | out_attr[i].i = in_attr[i].i; | |
798 | else if (out_attr[i].i != 0 && in_attr[i].i != 0 | |
53a346d8 CZ |
799 | && out_attr[i].i != in_attr[i].i) |
800 | { | |
801 | _bfd_error_handler | |
38f14ab8 | 802 | (_("error: %pB: conflicting attributes %s"), |
53a346d8 CZ |
803 | obfd, tagname); |
804 | result = FALSE; | |
805 | } | |
806 | break; | |
807 | ||
808 | case Tag_ARC_ISA_apex: | |
809 | break; /* Do nothing for APEX attributes. */ | |
810 | ||
811 | case Tag_ARC_ISA_config: | |
812 | /* It is handled in Tag_ARC_CPU_base. */ | |
813 | break; | |
814 | ||
db1e1b45 | 815 | case Tag_ARC_ATR_version: |
816 | if (out_attr[i].i == 0) | |
817 | out_attr[i].i = in_attr[i].i; | |
818 | break; | |
819 | ||
53a346d8 CZ |
820 | default: |
821 | result | |
822 | = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); | |
823 | } | |
824 | ||
825 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
826 | if (in_attr[i].type && !out_attr[i].type) | |
827 | out_attr[i].type = in_attr[i].type; | |
828 | } | |
829 | ||
830 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
831 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) | |
832 | return FALSE; | |
833 | ||
834 | /* Check for any attributes not known on ARC. */ | |
835 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); | |
836 | ||
837 | return result; | |
838 | } | |
839 | ||
34e967a5 MC |
840 | /* Merge backend specific data from an object file to the output |
841 | object file when linking. */ | |
842 | ||
843 | static bfd_boolean | |
50e03d47 | 844 | arc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
34e967a5 | 845 | { |
50e03d47 | 846 | bfd *obfd = info->output_bfd; |
34e967a5 MC |
847 | unsigned short mach_ibfd; |
848 | static unsigned short mach_obfd = EM_NONE; | |
849 | flagword out_flags; | |
850 | flagword in_flags; | |
851 | asection *sec; | |
852 | ||
853 | /* Check if we have the same endianess. */ | |
50e03d47 | 854 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
1047201f | 855 | return FALSE; |
34e967a5 | 856 | |
53a346d8 CZ |
857 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
858 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
859 | return TRUE; | |
860 | ||
34e967a5 MC |
861 | /* Collect ELF flags. */ |
862 | in_flags = elf_elfheader (ibfd)->e_flags & EF_ARC_MACH_MSK; | |
863 | out_flags = elf_elfheader (obfd)->e_flags & EF_ARC_MACH_MSK; | |
864 | ||
865 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
866 | { | |
867 | elf_flags_init (obfd) = TRUE; | |
868 | out_flags = in_flags; | |
869 | } | |
870 | ||
53a346d8 CZ |
871 | if (!arc_elf_merge_attributes (ibfd, info)) |
872 | return FALSE; | |
34e967a5 MC |
873 | |
874 | /* Check to see if the input BFD actually contains any sections. Do | |
875 | not short-circuit dynamic objects; their section list may be | |
876 | emptied by elf_link_add_object_symbols. */ | |
877 | if (!(ibfd->flags & DYNAMIC)) | |
878 | { | |
879 | bfd_boolean null_input_bfd = TRUE; | |
880 | bfd_boolean only_data_sections = TRUE; | |
881 | ||
882 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
883 | { | |
884 | if ((bfd_get_section_flags (ibfd, sec) | |
885 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
886 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
887 | only_data_sections = FALSE; | |
888 | ||
889 | null_input_bfd = FALSE; | |
890 | } | |
891 | ||
892 | if (null_input_bfd || only_data_sections) | |
893 | return TRUE; | |
894 | } | |
895 | ||
896 | /* Complain about various flag/architecture mismatches. */ | |
897 | mach_ibfd = elf_elfheader (ibfd)->e_machine; | |
898 | if (mach_obfd == EM_NONE) | |
899 | { | |
900 | mach_obfd = mach_ibfd; | |
901 | } | |
902 | else | |
903 | { | |
904 | if (mach_ibfd != mach_obfd) | |
905 | { | |
695344c0 | 906 | /* xgettext:c-format */ |
38f14ab8 | 907 | _bfd_error_handler (_("error: attempting to link %pB " |
871b3ab2 | 908 | "with a binary %pB of different architecture"), |
dae82561 | 909 | ibfd, obfd); |
34e967a5 MC |
910 | return FALSE; |
911 | } | |
53a346d8 CZ |
912 | else if ((in_flags != out_flags) |
913 | /* If we have object attributes, then we already | |
914 | checked the objects compatibility, skip it. */ | |
915 | && !bfd_elf_get_obj_attr_int (ibfd, OBJ_ATTR_PROC, | |
916 | Tag_ARC_CPU_base)) | |
34e967a5 | 917 | { |
34e967a5 | 918 | if (in_flags && out_flags) |
6af04484 CZ |
919 | { |
920 | /* Warn if different flags. */ | |
921 | _bfd_error_handler | |
922 | /* xgettext:c-format */ | |
923 | (_("%pB: uses different e_flags (%#x) fields than " | |
924 | "previous modules (%#x)"), | |
925 | ibfd, in_flags, out_flags); | |
926 | return FALSE; | |
927 | } | |
34e967a5 MC |
928 | /* MWDT doesnt set the eflags hence make sure we choose the |
929 | eflags set by gcc. */ | |
930 | in_flags = in_flags > out_flags ? in_flags : out_flags; | |
931 | } | |
53a346d8 CZ |
932 | else |
933 | { | |
934 | /* Everything is correct; don't change the output flags. */ | |
935 | in_flags = out_flags; | |
936 | } | |
34e967a5 MC |
937 | } |
938 | ||
939 | /* Update the flags. */ | |
940 | elf_elfheader (obfd)->e_flags = in_flags; | |
941 | ||
942 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
943 | { | |
944 | return bfd_set_arch_mach (obfd, bfd_arch_arc, bfd_get_mach (ibfd)); | |
945 | } | |
946 | ||
947 | return TRUE; | |
948 | } | |
949 | ||
53a346d8 CZ |
950 | /* Return a best guess for the machine number based on the attributes. */ |
951 | ||
952 | static unsigned int | |
953 | bfd_arc_get_mach_from_attributes (bfd * abfd) | |
954 | { | |
955 | int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ARC_CPU_base); | |
956 | unsigned e_machine = elf_elfheader (abfd)->e_machine; | |
957 | ||
958 | switch (arch) | |
959 | { | |
960 | case TAG_CPU_ARC6xx: | |
961 | return bfd_mach_arc_arc600; | |
962 | case TAG_CPU_ARC7xx: | |
963 | return bfd_mach_arc_arc700; | |
964 | case TAG_CPU_ARCEM: | |
965 | case TAG_CPU_ARCHS: | |
966 | return bfd_mach_arc_arcv2; | |
967 | default: | |
968 | break; | |
969 | } | |
970 | return (e_machine == EM_ARC_COMPACT) | |
971 | ? bfd_mach_arc_arc700 : bfd_mach_arc_arcv2; | |
972 | } | |
973 | ||
252b5132 | 974 | /* Set the right machine number for an ARC ELF file. */ |
b34976b6 | 975 | static bfd_boolean |
886a2506 | 976 | arc_elf_object_p (bfd * abfd) |
252b5132 | 977 | { |
886a2506 NC |
978 | /* Make sure this is initialised, or you'll have the potential of passing |
979 | garbage---or misleading values---into the call to | |
980 | bfd_default_set_arch_mach (). */ | |
53a346d8 | 981 | unsigned int mach = bfd_mach_arc_arc700; |
886a2506 NC |
982 | unsigned long arch = elf_elfheader (abfd)->e_flags & EF_ARC_MACH_MSK; |
983 | unsigned e_machine = elf_elfheader (abfd)->e_machine; | |
252b5132 | 984 | |
886a2506 | 985 | if (e_machine == EM_ARC_COMPACT || e_machine == EM_ARC_COMPACT2) |
252b5132 | 986 | { |
0d2bcfaf NC |
987 | switch (arch) |
988 | { | |
886a2506 NC |
989 | case E_ARC_MACH_ARC600: |
990 | mach = bfd_mach_arc_arc600; | |
991 | break; | |
992 | case E_ARC_MACH_ARC601: | |
993 | mach = bfd_mach_arc_arc601; | |
994 | break; | |
995 | case E_ARC_MACH_ARC700: | |
996 | mach = bfd_mach_arc_arc700; | |
997 | break; | |
998 | case EF_ARC_CPU_ARCV2HS: | |
999 | case EF_ARC_CPU_ARCV2EM: | |
1000 | mach = bfd_mach_arc_arcv2; | |
1001 | break; | |
1002 | default: | |
53a346d8 | 1003 | mach = bfd_arc_get_mach_from_attributes (abfd); |
886a2506 NC |
1004 | break; |
1005 | } | |
1006 | } | |
1007 | else | |
1008 | { | |
1009 | if (e_machine == EM_ARC) | |
1010 | { | |
4eca0228 | 1011 | _bfd_error_handler |
38f14ab8 | 1012 | (_("error: the ARC4 architecture is no longer supported")); |
886a2506 NC |
1013 | return FALSE; |
1014 | } | |
1015 | else | |
1016 | { | |
4eca0228 | 1017 | _bfd_error_handler |
38f14ab8 AM |
1018 | (_("warning: unset or old architecture flags; " |
1019 | "use default machine")); | |
0d2bcfaf | 1020 | } |
252b5132 | 1021 | } |
886a2506 | 1022 | |
0d2bcfaf | 1023 | return bfd_default_set_arch_mach (abfd, bfd_arch_arc, mach); |
252b5132 RH |
1024 | } |
1025 | ||
1026 | /* The final processing done just before writing out an ARC ELF object file. | |
1027 | This gets the ARC architecture right based on the machine number. */ | |
1028 | ||
1029 | static void | |
34e967a5 MC |
1030 | arc_elf_final_write_processing (bfd * abfd, |
1031 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 | 1032 | { |
886a2506 | 1033 | unsigned long emf; |
53a346d8 CZ |
1034 | int osver = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, |
1035 | Tag_ARC_ABI_osver); | |
1036 | flagword e_flags = elf_elfheader (abfd)->e_flags & ~EF_ARC_OSABI_MSK; | |
252b5132 | 1037 | |
0d2bcfaf | 1038 | switch (bfd_get_mach (abfd)) |
252b5132 | 1039 | { |
886a2506 | 1040 | case bfd_mach_arc_arc600: |
886a2506 | 1041 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1042 | break; |
886a2506 | 1043 | case bfd_mach_arc_arc601: |
886a2506 | 1044 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1045 | break; |
886a2506 | 1046 | case bfd_mach_arc_arc700: |
886a2506 | 1047 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1048 | break; |
886a2506 | 1049 | case bfd_mach_arc_arcv2: |
886a2506 | 1050 | emf = EM_ARC_COMPACT2; |
0d2bcfaf | 1051 | break; |
886a2506 | 1052 | default: |
53a346d8 | 1053 | return; |
252b5132 | 1054 | } |
34e967a5 | 1055 | |
886a2506 | 1056 | elf_elfheader (abfd)->e_machine = emf; |
7e458899 | 1057 | |
886a2506 | 1058 | /* Record whatever is the current syscall ABI version. */ |
53a346d8 CZ |
1059 | if (osver) |
1060 | e_flags |= ((osver & 0x0f) << 8); | |
1061 | else | |
1062 | e_flags |= E_ARC_OSABI_V3; | |
3c8adaca | 1063 | |
53a346d8 | 1064 | elf_elfheader (abfd)->e_flags |= e_flags; |
252b5132 RH |
1065 | } |
1066 | ||
f7e8b360 NC |
1067 | #ifdef ARC_ENABLE_DEBUG |
1068 | #define DEBUG_ARC_RELOC(A) debug_arc_reloc (A) | |
886a2506 NC |
1069 | |
1070 | static void | |
1071 | debug_arc_reloc (struct arc_relocation_data reloc_data) | |
1072 | { | |
f7e8b360 NC |
1073 | ARC_DEBUG ("Reloc type=%s, should_relocate = %s\n", |
1074 | reloc_data.howto->name, | |
1075 | reloc_data.should_relocate ? "true" : "false"); | |
1076 | ARC_DEBUG (" offset = 0x%x, addend = 0x%x\n", | |
1077 | (unsigned int) reloc_data.reloc_offset, | |
1078 | (unsigned int) reloc_data.reloc_addend); | |
1079 | ARC_DEBUG (" Symbol:\n"); | |
1080 | ARC_DEBUG (" value = 0x%08x\n", | |
1081 | (unsigned int) reloc_data.sym_value); | |
886a2506 NC |
1082 | if (reloc_data.sym_section != NULL) |
1083 | { | |
f7e8b360 NC |
1084 | ARC_DEBUG (" Symbol Section:\n"); |
1085 | ARC_DEBUG (" section name = %s, output_offset 0x%08x", | |
1086 | reloc_data.sym_section->name, | |
1087 | (unsigned int) reloc_data.sym_section->output_offset); | |
34e967a5 | 1088 | if (reloc_data.sym_section->output_section != NULL) |
f7e8b360 | 1089 | ARC_DEBUG (", output_section->vma = 0x%08x", |
34e967a5 | 1090 | ((unsigned int) reloc_data.sym_section->output_section->vma)); |
f7e8b360 NC |
1091 | ARC_DEBUG ("\n"); |
1092 | if (reloc_data.sym_section->owner && reloc_data.sym_section->owner->filename) | |
1093 | ARC_DEBUG (" file: %s\n", reloc_data.sym_section->owner->filename); | |
886a2506 NC |
1094 | } |
1095 | else | |
34e967a5 | 1096 | { |
f7e8b360 | 1097 | ARC_DEBUG (" symbol section is NULL\n"); |
34e967a5 | 1098 | } |
886a2506 | 1099 | |
f7e8b360 | 1100 | ARC_DEBUG (" Input_section:\n"); |
886a2506 NC |
1101 | if (reloc_data.input_section != NULL) |
1102 | { | |
f7e8b360 NC |
1103 | ARC_DEBUG (" section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n", |
1104 | reloc_data.input_section->name, | |
1105 | (unsigned int) reloc_data.input_section->output_offset, | |
1106 | (unsigned int) reloc_data.input_section->output_section->vma); | |
1107 | ARC_DEBUG (" changed_address = 0x%08x\n", | |
1108 | (unsigned int) (reloc_data.input_section->output_section->vma | |
1109 | + reloc_data.input_section->output_offset | |
1110 | + reloc_data.reloc_offset)); | |
1111 | ARC_DEBUG (" file: %s\n", reloc_data.input_section->owner->filename); | |
886a2506 NC |
1112 | } |
1113 | else | |
34e967a5 | 1114 | { |
f7e8b360 | 1115 | ARC_DEBUG (" input section is NULL\n"); |
34e967a5 | 1116 | } |
886a2506 | 1117 | } |
f7e8b360 NC |
1118 | #else |
1119 | #define DEBUG_ARC_RELOC(A) | |
1120 | #endif /* ARC_ENABLE_DEBUG */ | |
886a2506 | 1121 | |
72f3b6aa CZ |
1122 | static bfd_vma |
1123 | middle_endian_convert (bfd_vma insn, bfd_boolean do_it) | |
6f4b1afc | 1124 | { |
72f3b6aa CZ |
1125 | if (do_it) |
1126 | { | |
08759e0f CM |
1127 | insn |
1128 | = ((insn & 0xffff0000) >> 16) | |
1129 | | ((insn & 0xffff) << 16); | |
72f3b6aa CZ |
1130 | } |
1131 | return insn; | |
6f4b1afc CM |
1132 | } |
1133 | ||
4b0c052e AB |
1134 | /* This function is called for relocations that are otherwise marked as NOT |
1135 | requiring overflow checks. In here we perform non-standard checks of | |
1136 | the relocation value. */ | |
1137 | ||
1138 | static inline bfd_reloc_status_type | |
1139 | arc_special_overflow_checks (const struct arc_relocation_data reloc_data, | |
08759e0f | 1140 | bfd_signed_vma relocation, |
4b0c052e AB |
1141 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
1142 | { | |
1143 | switch (reloc_data.howto->type) | |
1144 | { | |
1145 | case R_ARC_NPS_CMEM16: | |
1146 | if (((relocation >> 16) & 0xffff) != NPS_CMEM_HIGH_VALUE) | |
08759e0f CM |
1147 | { |
1148 | if (reloc_data.reloc_addend == 0) | |
4eca0228 | 1149 | _bfd_error_handler |
695344c0 | 1150 | /* xgettext:c-format */ |
2dcf00ce AM |
1151 | (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s' is invalid, " |
1152 | "16 MSB should be %#x (value is %#" PRIx64 ")"), | |
08759e0f CM |
1153 | reloc_data.input_section->owner, |
1154 | reloc_data.input_section, | |
2dcf00ce | 1155 | (uint64_t) reloc_data.reloc_offset, |
08759e0f CM |
1156 | reloc_data.symbol_name, |
1157 | NPS_CMEM_HIGH_VALUE, | |
2dcf00ce | 1158 | (uint64_t) relocation); |
08759e0f | 1159 | else |
4eca0228 | 1160 | _bfd_error_handler |
695344c0 | 1161 | /* xgettext:c-format */ |
2dcf00ce AM |
1162 | (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s+%#" PRIx64 |
1163 | "' is invalid, 16 MSB should be %#x (value is %#" PRIx64 ")"), | |
08759e0f CM |
1164 | reloc_data.input_section->owner, |
1165 | reloc_data.input_section, | |
2dcf00ce | 1166 | (uint64_t) reloc_data.reloc_offset, |
08759e0f | 1167 | reloc_data.symbol_name, |
2dcf00ce | 1168 | (uint64_t) reloc_data.reloc_addend, |
08759e0f | 1169 | NPS_CMEM_HIGH_VALUE, |
2dcf00ce | 1170 | (uint64_t) relocation); |
08759e0f CM |
1171 | return bfd_reloc_overflow; |
1172 | } | |
4b0c052e AB |
1173 | break; |
1174 | ||
1175 | default: | |
1176 | break; | |
1177 | } | |
1178 | ||
1179 | return bfd_reloc_ok; | |
1180 | } | |
1181 | ||
72f3b6aa CZ |
1182 | #define ME(reloc) (reloc) |
1183 | ||
1184 | #define IS_ME(FORMULA,BFD) ((strstr (FORMULA, "ME") != NULL) \ | |
1185 | && (!bfd_big_endian (BFD))) | |
1186 | ||
094fb063 | 1187 | #define S ((bfd_signed_vma) (reloc_data.sym_value \ |
34e967a5 MC |
1188 | + (reloc_data.sym_section->output_section != NULL ? \ |
1189 | (reloc_data.sym_section->output_offset \ | |
094fb063 CZ |
1190 | + reloc_data.sym_section->output_section->vma) : 0))) |
1191 | #define L ((bfd_signed_vma) (reloc_data.sym_value \ | |
34e967a5 MC |
1192 | + (reloc_data.sym_section->output_section != NULL ? \ |
1193 | (reloc_data.sym_section->output_offset \ | |
094fb063 | 1194 | + reloc_data.sym_section->output_section->vma) : 0))) |
886a2506 NC |
1195 | #define A (reloc_data.reloc_addend) |
1196 | #define B (0) | |
1197 | #define G (reloc_data.got_offset_value) | |
34e967a5 MC |
1198 | #define GOT (reloc_data.got_symbol_vma) |
1199 | #define GOT_BEGIN (htab->sgot->output_section->vma) | |
1200 | ||
886a2506 | 1201 | #define MES (0) |
34e967a5 MC |
1202 | /* P: relative offset to PCL The offset should be to the |
1203 | current location aligned to 32 bits. */ | |
094fb063 | 1204 | #define P ((bfd_signed_vma) ( \ |
34e967a5 MC |
1205 | ( \ |
1206 | (reloc_data.input_section->output_section != NULL ? \ | |
1207 | reloc_data.input_section->output_section->vma : 0) \ | |
1208 | + reloc_data.input_section->output_offset \ | |
094fb063 CZ |
1209 | + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0))) \ |
1210 | & ~0x3)) | |
1211 | #define PDATA ((bfd_signed_vma) ( \ | |
6f4b1afc CM |
1212 | (reloc_data.input_section->output_section->vma \ |
1213 | + reloc_data.input_section->output_offset \ | |
094fb063 | 1214 | + (reloc_data.reloc_offset)))) |
2ab2f40d CM |
1215 | #define SECTSTART (bfd_signed_vma) (reloc_data.sym_section->output_section->vma \ |
1216 | + reloc_data.sym_section->output_offset) | |
714e9a95 CM |
1217 | #define FINAL_SECTSTART \ |
1218 | (bfd_signed_vma) (reloc_data.sym_section->output_section->vma) | |
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) | |
0411fca5 CM |
1223 | #define TLS_TBSS (align_power(TCB_SIZE, \ |
1224 | reloc_data.sym_section->alignment_power)) | |
34e967a5 | 1225 | |
886a2506 NC |
1226 | #define none (0) |
1227 | ||
f7e8b360 NC |
1228 | #ifdef ARC_ENABLE_DEBUG |
1229 | #define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA, TYPE) \ | |
1230 | do \ | |
1231 | { \ | |
1232 | asection *sym_section = reloc_data.sym_section; \ | |
1233 | asection *input_section = reloc_data.input_section; \ | |
1234 | ARC_DEBUG ("RELOC_TYPE = " TYPE "\n"); \ | |
1235 | ARC_DEBUG ("FORMULA = " FORMULA "\n"); \ | |
1236 | ARC_DEBUG ("S = %#lx\n", S); \ | |
1237 | ARC_DEBUG ("A = %#lx\n", A); \ | |
1238 | ARC_DEBUG ("L = %lx\n", L); \ | |
1239 | if (sym_section->output_section != NULL) \ | |
1240 | ARC_DEBUG ("symbol_section->vma = %#lx\n", \ | |
1241 | sym_section->output_section->vma \ | |
1242 | + sym_section->output_offset); \ | |
1243 | else \ | |
1244 | ARC_DEBUG ("symbol_section->vma = NULL\n"); \ | |
1245 | if (input_section->output_section != NULL) \ | |
1246 | ARC_DEBUG ("symbol_section->vma = %#lx\n", \ | |
1247 | input_section->output_section->vma \ | |
1248 | + input_section->output_offset); \ | |
1249 | else \ | |
1250 | ARC_DEBUG ("symbol_section->vma = NULL\n"); \ | |
1251 | ARC_DEBUG ("PCL = %#lx\n", P); \ | |
1252 | ARC_DEBUG ("P = %#lx\n", P); \ | |
1253 | ARC_DEBUG ("G = %#lx\n", G); \ | |
1254 | ARC_DEBUG ("SDA_OFFSET = %#lx\n", _SDA_BASE_); \ | |
34e967a5 | 1255 | ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \ |
f7e8b360 NC |
1256 | ARC_DEBUG ("GOT_OFFSET = %#lx\n", GOT); \ |
1257 | ARC_DEBUG ("relocation = %#08lx\n", relocation); \ | |
1258 | ARC_DEBUG ("before = %#08x\n", (unsigned) insn); \ | |
1259 | ARC_DEBUG ("data = %08x (%u) (%d)\n", (unsigned) relocation, \ | |
1260 | (unsigned) relocation, (int) relocation); \ | |
1261 | } \ | |
1262 | while (0) | |
1263 | ||
1264 | #define PRINT_DEBUG_RELOC_INFO_AFTER \ | |
1265 | do \ | |
1266 | { \ | |
1267 | ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \ | |
1268 | } \ | |
1269 | while (0) | |
34e967a5 | 1270 | |
f7e8b360 NC |
1271 | #else |
1272 | ||
1273 | #define PRINT_DEBUG_RELOC_INFO_BEFORE(...) | |
07d6d2b8 | 1274 | #define PRINT_DEBUG_RELOC_INFO_AFTER |
f7e8b360 NC |
1275 | |
1276 | #endif /* ARC_ENABLE_DEBUG */ | |
34e967a5 | 1277 | |
886a2506 | 1278 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
f7e8b360 NC |
1279 | case R_##TYPE: \ |
1280 | { \ | |
1281 | bfd_signed_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \ | |
1282 | relocation = FORMULA ; \ | |
1283 | PRINT_DEBUG_RELOC_INFO_BEFORE (#FORMULA, #TYPE); \ | |
1284 | insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \ | |
1285 | insn = (* get_replace_function (abfd, TYPE)) (insn, relocation); \ | |
1286 | insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \ | |
1287 | PRINT_DEBUG_RELOC_INFO_AFTER; \ | |
1288 | } \ | |
886a2506 NC |
1289 | break; |
1290 | ||
1291 | static bfd_reloc_status_type | |
34e967a5 MC |
1292 | arc_do_relocation (bfd_byte * contents, |
1293 | struct arc_relocation_data reloc_data, | |
1294 | struct bfd_link_info *info) | |
886a2506 | 1295 | { |
094fb063 | 1296 | bfd_signed_vma relocation = 0; |
886a2506 NC |
1297 | bfd_vma insn; |
1298 | bfd_vma orig_insn ATTRIBUTE_UNUSED; | |
72f3b6aa | 1299 | bfd * abfd = reloc_data.input_section->owner; |
34e967a5 | 1300 | struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info); |
4b0c052e | 1301 | bfd_reloc_status_type flag; |
886a2506 | 1302 | |
535b785f | 1303 | if (!reloc_data.should_relocate) |
34e967a5 | 1304 | return bfd_reloc_ok; |
886a2506 NC |
1305 | |
1306 | switch (reloc_data.howto->size) | |
1307 | { | |
1308 | case 2: | |
72f3b6aa | 1309 | insn = arc_bfd_get_32 (abfd, |
886a2506 NC |
1310 | contents + reloc_data.reloc_offset, |
1311 | reloc_data.input_section); | |
1312 | break; | |
1313 | case 1: | |
72f3b6aa CZ |
1314 | insn = arc_bfd_get_16 (abfd, |
1315 | contents + reloc_data.reloc_offset, | |
1316 | reloc_data.input_section); | |
1317 | break; | |
886a2506 | 1318 | case 0: |
72f3b6aa | 1319 | insn = arc_bfd_get_8 (abfd, |
886a2506 NC |
1320 | contents + reloc_data.reloc_offset, |
1321 | reloc_data.input_section); | |
1322 | break; | |
1323 | default: | |
1324 | insn = 0; | |
1325 | BFD_ASSERT (0); | |
1326 | break; | |
1327 | } | |
1328 | ||
1329 | orig_insn = insn; | |
1330 | ||
1331 | switch (reloc_data.howto->type) | |
1332 | { | |
34e967a5 | 1333 | #include "elf/arc-reloc.def" |
886a2506 NC |
1334 | |
1335 | default: | |
1336 | BFD_ASSERT (0); | |
1337 | break; | |
1338 | } | |
1339 | ||
1340 | /* Check for relocation overflow. */ | |
1341 | if (reloc_data.howto->complain_on_overflow != complain_overflow_dont) | |
4b0c052e | 1342 | flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow, |
08759e0f CM |
1343 | reloc_data.howto->bitsize, |
1344 | reloc_data.howto->rightshift, | |
1345 | bfd_arch_bits_per_address (abfd), | |
1346 | relocation); | |
4b0c052e AB |
1347 | else |
1348 | flag = arc_special_overflow_checks (reloc_data, relocation, info); | |
886a2506 | 1349 | |
4b0c052e AB |
1350 | if (flag != bfd_reloc_ok) |
1351 | { | |
f7e8b360 | 1352 | ARC_DEBUG ("Relocation overflows !\n"); |
4b0c052e | 1353 | DEBUG_ARC_RELOC (reloc_data); |
f7e8b360 NC |
1354 | ARC_DEBUG ("Relocation value = signed -> %d, unsigned -> %u" |
1355 | ", hex -> (0x%08x)\n", | |
1356 | (int) relocation, (unsigned) relocation, (int) relocation); | |
886a2506 | 1357 | |
4b0c052e | 1358 | return flag; |
886a2506 | 1359 | } |
886a2506 | 1360 | |
4b0c052e | 1361 | /* Write updated instruction back to memory. */ |
886a2506 NC |
1362 | switch (reloc_data.howto->size) |
1363 | { | |
1364 | case 2: | |
72f3b6aa | 1365 | arc_bfd_put_32 (abfd, insn, |
886a2506 NC |
1366 | contents + reloc_data.reloc_offset, |
1367 | reloc_data.input_section); | |
1368 | break; | |
1369 | case 1: | |
72f3b6aa CZ |
1370 | arc_bfd_put_16 (abfd, insn, |
1371 | contents + reloc_data.reloc_offset, | |
1372 | reloc_data.input_section); | |
1373 | break; | |
886a2506 | 1374 | case 0: |
72f3b6aa | 1375 | arc_bfd_put_8 (abfd, insn, |
886a2506 NC |
1376 | contents + reloc_data.reloc_offset, |
1377 | reloc_data.input_section); | |
1378 | break; | |
1379 | default: | |
1380 | ARC_DEBUG ("size = %d\n", reloc_data.howto->size); | |
1381 | BFD_ASSERT (0); | |
1382 | break; | |
1383 | } | |
1384 | ||
1385 | return bfd_reloc_ok; | |
1386 | } | |
1387 | #undef S | |
1388 | #undef A | |
1389 | #undef B | |
1390 | #undef G | |
1391 | #undef GOT | |
1392 | #undef L | |
1393 | #undef MES | |
1394 | #undef P | |
1395 | #undef SECTSTAR | |
1396 | #undef SECTSTART | |
684d5a10 | 1397 | #undef JLI |
886a2506 NC |
1398 | #undef _SDA_BASE_ |
1399 | #undef none | |
1400 | ||
1401 | #undef ARC_RELOC_HOWTO | |
1402 | ||
886a2506 | 1403 | |
886a2506 NC |
1404 | /* Relocate an arc ELF section. |
1405 | Function : elf_arc_relocate_section | |
1406 | Brief : Relocate an arc section, by handling all the relocations | |
34e967a5 | 1407 | appearing in that section. |
886a2506 | 1408 | Args : output_bfd : The bfd being written to. |
34e967a5 MC |
1409 | info : Link information. |
1410 | input_bfd : The input bfd. | |
1411 | input_section : The section being relocated. | |
1412 | contents : contents of the section being relocated. | |
1413 | relocs : List of relocations in the section. | |
1414 | local_syms : is a pointer to the swapped in local symbols. | |
1415 | local_section : is an array giving the section in the input file | |
1416 | corresponding to the st_shndx field of each | |
1417 | local symbol. */ | |
886a2506 | 1418 | static bfd_boolean |
07d6d2b8 | 1419 | elf_arc_relocate_section (bfd * output_bfd, |
886a2506 | 1420 | struct bfd_link_info * info, |
07d6d2b8 AM |
1421 | bfd * input_bfd, |
1422 | asection * input_section, | |
1423 | bfd_byte * contents, | |
886a2506 NC |
1424 | Elf_Internal_Rela * relocs, |
1425 | Elf_Internal_Sym * local_syms, | |
07d6d2b8 | 1426 | asection ** local_sections) |
886a2506 | 1427 | { |
07d6d2b8 | 1428 | Elf_Internal_Shdr * symtab_hdr; |
f7e8b360 | 1429 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
1430 | Elf_Internal_Rela * rel; |
1431 | Elf_Internal_Rela * wrel; | |
1432 | Elf_Internal_Rela * relend; | |
f7e8b360 | 1433 | struct elf_link_hash_table * htab = elf_hash_table (info); |
886a2506 NC |
1434 | |
1435 | symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr); | |
1436 | sym_hashes = elf_sym_hashes (input_bfd); | |
1437 | ||
3c8adaca | 1438 | rel = wrel = relocs; |
886a2506 | 1439 | relend = relocs + input_section->reloc_count; |
3c8adaca | 1440 | for (; rel < relend; wrel++, rel++) |
886a2506 | 1441 | { |
07d6d2b8 | 1442 | enum elf_arc_reloc_type r_type; |
34e967a5 | 1443 | reloc_howto_type * howto; |
f7e8b360 | 1444 | unsigned long r_symndx; |
886a2506 | 1445 | struct elf_link_hash_entry * h; |
34e967a5 MC |
1446 | Elf_Internal_Sym * sym; |
1447 | asection * sec; | |
f7e8b360 | 1448 | struct elf_link_hash_entry * h2; |
07d6d2b8 | 1449 | const char * msg; |
f4e6805f | 1450 | bfd_boolean unresolved_reloc = FALSE; |
886a2506 NC |
1451 | |
1452 | struct arc_relocation_data reloc_data = | |
1453 | { | |
34e967a5 MC |
1454 | .reloc_offset = 0, |
1455 | .reloc_addend = 0, | |
1456 | .got_offset_value = 0, | |
07d6d2b8 | 1457 | .sym_value = 0, |
34e967a5 MC |
1458 | .sym_section = NULL, |
1459 | .howto = NULL, | |
1460 | .input_section = NULL, | |
1461 | .sdata_begin_symbol_vma = 0, | |
1462 | .sdata_begin_symbol_vma_set = FALSE, | |
1463 | .got_symbol_vma = 0, | |
1464 | .should_relocate = FALSE | |
886a2506 NC |
1465 | }; |
1466 | ||
34e967a5 MC |
1467 | r_type = ELF32_R_TYPE (rel->r_info); |
1468 | ||
1469 | if (r_type >= (int) R_ARC_max) | |
1470 | { | |
1471 | bfd_set_error (bfd_error_bad_value); | |
1472 | return FALSE; | |
1473 | } | |
3c8adaca | 1474 | howto = arc_elf_howto (r_type); |
34e967a5 MC |
1475 | |
1476 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1477 | ||
1478 | /* If we are generating another .o file and the symbol in not | |
1479 | local, skip this relocation. */ | |
1480 | if (bfd_link_relocatable (info)) | |
1481 | { | |
1482 | /* This is a relocateable link. We don't have to change | |
1483 | anything, unless the reloc is against a section symbol, | |
1484 | in which case we have to adjust according to where the | |
1485 | section symbol winds up in the output section. */ | |
1486 | ||
1487 | /* Checks if this is a local symbol and thus the reloc | |
1488 | might (will??) be against a section symbol. */ | |
1489 | if (r_symndx < symtab_hdr->sh_info) | |
1490 | { | |
1491 | sym = local_syms + r_symndx; | |
1492 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1493 | { | |
1494 | sec = local_sections[r_symndx]; | |
1495 | ||
f7e8b360 | 1496 | /* For RELA relocs. Just adjust the addend |
34e967a5 MC |
1497 | value in the relocation entry. */ |
1498 | rel->r_addend += sec->output_offset + sym->st_value; | |
1499 | ||
f7e8b360 NC |
1500 | ARC_DEBUG ("local symbols reloc (section=%d %s) seen in %s\n", |
1501 | (int) r_symndx, local_sections[r_symndx]->name, | |
1502 | __PRETTY_FUNCTION__); | |
34e967a5 MC |
1503 | } |
1504 | } | |
34e967a5 | 1505 | } |
886a2506 NC |
1506 | |
1507 | h2 = elf_link_hash_lookup (elf_hash_table (info), "__SDATA_BEGIN__", | |
1508 | FALSE, FALSE, TRUE); | |
1509 | ||
535b785f AM |
1510 | if (!reloc_data.sdata_begin_symbol_vma_set |
1511 | && h2 != NULL && h2->root.type != bfd_link_hash_undefined | |
1512 | && h2->root.u.def.section->output_section != NULL) | |
34e967a5 | 1513 | /* TODO: Verify this condition. */ |
886a2506 NC |
1514 | { |
1515 | reloc_data.sdata_begin_symbol_vma = | |
08759e0f CM |
1516 | (h2->root.u.def.value |
1517 | + h2->root.u.def.section->output_section->vma); | |
886a2506 NC |
1518 | reloc_data.sdata_begin_symbol_vma_set = TRUE; |
1519 | } | |
1520 | ||
886a2506 NC |
1521 | reloc_data.input_section = input_section; |
1522 | reloc_data.howto = howto; | |
1523 | reloc_data.reloc_offset = rel->r_offset; | |
1524 | reloc_data.reloc_addend = rel->r_addend; | |
1525 | ||
886a2506 NC |
1526 | /* This is a final link. */ |
1527 | h = NULL; | |
1528 | sym = NULL; | |
1529 | sec = NULL; | |
1530 | ||
1531 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
1532 | { | |
1533 | sym = local_syms + r_symndx; | |
1534 | sec = local_sections[r_symndx]; | |
3c8adaca CZ |
1535 | } |
1536 | else | |
1537 | { | |
f4e6805f CM |
1538 | bfd_boolean warned, ignored; |
1539 | bfd_vma relocation ATTRIBUTE_UNUSED; | |
1540 | ||
1541 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
1542 | r_symndx, symtab_hdr, sym_hashes, | |
1543 | h, sec, relocation, | |
1544 | unresolved_reloc, warned, ignored); | |
1545 | ||
3c8adaca CZ |
1546 | /* TODO: This code is repeated from below. We should |
1547 | clean it and remove duplications. | |
1548 | Sec is used check for discarded sections. | |
1549 | Need to redesign code below. */ | |
1550 | ||
1551 | /* Get the symbol's entry in the symtab. */ | |
1552 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1553 | ||
1554 | while (h->root.type == bfd_link_hash_indirect | |
1555 | || h->root.type == bfd_link_hash_warning) | |
1556 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1557 | ||
1558 | /* If we have encountered a definition for this symbol. */ | |
1559 | if (h->root.type == bfd_link_hash_defined | |
1560 | || h->root.type == bfd_link_hash_defweak) | |
1561 | { | |
1562 | reloc_data.sym_value = h->root.u.def.value; | |
1563 | sec = h->root.u.def.section; | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | /* Clean relocs for symbols in discarded sections. */ | |
1568 | if (sec != NULL && discarded_section (sec)) | |
1569 | { | |
1570 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 1571 | contents, rel->r_offset); |
3c8adaca CZ |
1572 | rel->r_info = 0; |
1573 | rel->r_addend = 0; | |
1574 | ||
1575 | /* For ld -r, remove relocations in debug sections against | |
1576 | sections defined in discarded sections. Not done for | |
1577 | eh_frame editing code expects to be present. */ | |
1578 | if (bfd_link_relocatable (info) | |
1579 | && (input_section->flags & SEC_DEBUGGING)) | |
1580 | wrel--; | |
1581 | ||
1582 | continue; | |
1583 | } | |
1584 | ||
1585 | if (bfd_link_relocatable (info)) | |
1586 | { | |
1587 | if (wrel != rel) | |
1588 | *wrel = *rel; | |
1589 | continue; | |
1590 | } | |
1591 | ||
1592 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
1593 | { | |
886a2506 NC |
1594 | reloc_data.sym_value = sym->st_value; |
1595 | reloc_data.sym_section = sec; | |
4b0c052e | 1596 | reloc_data.symbol_name = |
3c8adaca CZ |
1597 | bfd_elf_string_from_elf_section (input_bfd, |
1598 | symtab_hdr->sh_link, | |
1599 | sym->st_name); | |
886a2506 | 1600 | |
841fdfcd CZ |
1601 | /* Mergeable section handling. */ |
1602 | if ((sec->flags & SEC_MERGE) | |
1603 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1604 | { | |
1605 | asection *msec; | |
1606 | msec = sec; | |
1607 | rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym, | |
1608 | &msec, rel->r_addend); | |
1609 | rel->r_addend -= (sec->output_section->vma | |
1610 | + sec->output_offset | |
1611 | + sym->st_value); | |
1612 | rel->r_addend += msec->output_section->vma + msec->output_offset; | |
1613 | ||
1614 | reloc_data.reloc_addend = rel->r_addend; | |
1615 | } | |
1616 | ||
34e967a5 MC |
1617 | BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto)); |
1618 | if (htab->sgot != NULL) | |
1619 | reloc_data.got_symbol_vma = htab->sgot->output_section->vma | |
1620 | + htab->sgot->output_offset; | |
886a2506 NC |
1621 | |
1622 | reloc_data.should_relocate = TRUE; | |
1623 | } | |
1624 | else /* Global symbol. */ | |
1625 | { | |
f7e8b360 NC |
1626 | /* FIXME: We should use the RELOC_FOR_GLOBAL_SYMBOL macro |
1627 | (defined in elf-bfd.h) here. */ | |
1628 | ||
886a2506 NC |
1629 | /* Get the symbol's entry in the symtab. */ |
1630 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1631 | ||
1632 | while (h->root.type == bfd_link_hash_indirect | |
1633 | || h->root.type == bfd_link_hash_warning) | |
cc89d0b3 | 1634 | { |
854b8506 CM |
1635 | struct elf_arc_link_hash_entry *ah_old = |
1636 | (struct elf_arc_link_hash_entry *) h; | |
886a2506 | 1637 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
854b8506 CM |
1638 | struct elf_arc_link_hash_entry *ah = |
1639 | (struct elf_arc_link_hash_entry *) h; | |
1640 | ||
1641 | if (ah->got_ents == 0 && ah_old->got_ents != ah->got_ents) | |
1642 | ah->got_ents = ah_old->got_ents; | |
cc89d0b3 | 1643 | } |
886a2506 | 1644 | |
3c8adaca CZ |
1645 | /* TODO: Need to validate what was the intention. */ |
1646 | /* BFD_ASSERT ((h->dynindx == -1) || (h->forced_local != 0)); */ | |
4b0c052e | 1647 | reloc_data.symbol_name = h->root.root.string; |
3c8adaca | 1648 | |
886a2506 NC |
1649 | /* If we have encountered a definition for this symbol. */ |
1650 | if (h->root.type == bfd_link_hash_defined | |
1651 | || h->root.type == bfd_link_hash_defweak) | |
1652 | { | |
1653 | reloc_data.sym_value = h->root.u.def.value; | |
1654 | reloc_data.sym_section = h->root.u.def.section; | |
1655 | ||
1656 | reloc_data.should_relocate = TRUE; | |
1657 | ||
34e967a5 | 1658 | if (is_reloc_for_GOT (howto) && !bfd_link_pic (info)) |
886a2506 | 1659 | { |
854b8506 CM |
1660 | struct elf_arc_link_hash_entry *ah = |
1661 | (struct elf_arc_link_hash_entry *) h; | |
34e967a5 MC |
1662 | /* TODO: Change it to use arc_do_relocation with |
1663 | ARC_32 reloc. Try to use ADD_RELA macro. */ | |
886a2506 NC |
1664 | bfd_vma relocation = |
1665 | reloc_data.sym_value + reloc_data.reloc_addend | |
34e967a5 MC |
1666 | + (reloc_data.sym_section->output_section != NULL ? |
1667 | (reloc_data.sym_section->output_offset | |
1668 | + reloc_data.sym_section->output_section->vma) | |
1669 | : 0); | |
1670 | ||
854b8506 CM |
1671 | BFD_ASSERT (ah->got_ents); |
1672 | bfd_vma got_offset = ah->got_ents->offset; | |
34e967a5 MC |
1673 | bfd_put_32 (output_bfd, relocation, |
1674 | htab->sgot->contents + got_offset); | |
1675 | } | |
1676 | if (is_reloc_for_PLT (howto) && h->plt.offset != (bfd_vma) -1) | |
1677 | { | |
1678 | /* TODO: This is repeated up here. */ | |
1679 | reloc_data.sym_value = h->plt.offset; | |
1680 | reloc_data.sym_section = htab->splt; | |
886a2506 NC |
1681 | } |
1682 | } | |
1683 | else if (h->root.type == bfd_link_hash_undefweak) | |
1684 | { | |
1685 | /* Is weak symbol and has no definition. */ | |
34e967a5 MC |
1686 | if (is_reloc_for_GOT (howto)) |
1687 | { | |
1688 | reloc_data.sym_value = h->root.u.def.value; | |
1689 | reloc_data.sym_section = htab->sgot; | |
1690 | reloc_data.should_relocate = TRUE; | |
1691 | } | |
1692 | else if (is_reloc_for_PLT (howto) | |
1693 | && h->plt.offset != (bfd_vma) -1) | |
1694 | { | |
1695 | /* TODO: This is repeated up here. */ | |
1696 | reloc_data.sym_value = h->plt.offset; | |
1697 | reloc_data.sym_section = htab->splt; | |
1698 | reloc_data.should_relocate = TRUE; | |
1699 | } | |
1700 | else | |
1701 | continue; | |
886a2506 NC |
1702 | } |
1703 | else | |
1704 | { | |
1705 | if (is_reloc_for_GOT (howto)) | |
1706 | { | |
886a2506 | 1707 | reloc_data.sym_value = h->root.u.def.value; |
34e967a5 | 1708 | reloc_data.sym_section = htab->sgot; |
886a2506 NC |
1709 | |
1710 | reloc_data.should_relocate = TRUE; | |
1711 | } | |
1712 | else if (is_reloc_for_PLT (howto)) | |
1713 | { | |
7e458899 CZ |
1714 | /* Fail if it is linking for PIE and the symbol is |
1715 | undefined. */ | |
1a72702b AM |
1716 | if (bfd_link_executable (info)) |
1717 | (*info->callbacks->undefined_symbol) | |
1718 | (info, h->root.root.string, input_bfd, input_section, | |
1719 | rel->r_offset, TRUE); | |
886a2506 | 1720 | reloc_data.sym_value = h->plt.offset; |
34e967a5 | 1721 | reloc_data.sym_section = htab->splt; |
886a2506 NC |
1722 | |
1723 | reloc_data.should_relocate = TRUE; | |
1724 | } | |
8a36df4d | 1725 | else if (!bfd_link_pic (info) || bfd_link_executable (info)) |
1a72702b AM |
1726 | (*info->callbacks->undefined_symbol) |
1727 | (info, h->root.root.string, input_bfd, input_section, | |
1728 | rel->r_offset, TRUE); | |
886a2506 NC |
1729 | } |
1730 | ||
34e967a5 MC |
1731 | BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto)); |
1732 | if (htab->sgot != NULL) | |
1733 | reloc_data.got_symbol_vma = htab->sgot->output_section->vma | |
1734 | + htab->sgot->output_offset; | |
886a2506 NC |
1735 | } |
1736 | ||
08759e0f CM |
1737 | if ((is_reloc_for_GOT (howto) |
1738 | || is_reloc_for_TLS (howto))) | |
1739 | { | |
980aa3e6 CM |
1740 | reloc_data.should_relocate = TRUE; |
1741 | ||
08759e0f | 1742 | struct got_entry **list |
0f206410 | 1743 | = get_got_entry_list_for_symbol (input_bfd, r_symndx, h); |
08759e0f CM |
1744 | |
1745 | reloc_data.got_offset_value | |
1746 | = relocate_fix_got_relocs_for_got_info (list, | |
1747 | tls_type_for_reloc (howto), | |
1748 | info, | |
1749 | output_bfd, | |
1750 | r_symndx, | |
1751 | local_syms, | |
1752 | local_sections, | |
1753 | h, | |
1754 | &reloc_data); | |
1755 | ||
1756 | if (h == NULL) | |
1757 | { | |
1758 | create_got_dynrelocs_for_single_entry ( | |
1759 | got_entry_for_type (list, | |
07d6d2b8 | 1760 | arc_got_entry_type_for_reloc (howto)), |
08759e0f CM |
1761 | output_bfd, info, NULL); |
1762 | } | |
1763 | } | |
f7e8b360 | 1764 | |
cd640291 CM |
1765 | |
1766 | #define IS_ARC_PCREL_TYPE(TYPE) \ | |
1767 | ( (TYPE == R_ARC_PC32) \ | |
1768 | || (TYPE == R_ARC_32_PCREL)) | |
1769 | ||
34e967a5 MC |
1770 | switch (r_type) |
1771 | { | |
1772 | case R_ARC_32: | |
1773 | case R_ARC_32_ME: | |
1774 | case R_ARC_PC32: | |
1775 | case R_ARC_32_PCREL: | |
cd640291 CM |
1776 | if (bfd_link_pic (info) |
1777 | && (!IS_ARC_PCREL_TYPE (r_type) | |
34e967a5 MC |
1778 | || (h != NULL |
1779 | && h->dynindx != -1 | |
cd640291 | 1780 | && !h->def_regular |
34e967a5 MC |
1781 | && (!info->symbolic || !h->def_regular)))) |
1782 | { | |
1783 | Elf_Internal_Rela outrel; | |
1784 | bfd_byte *loc; | |
1785 | bfd_boolean skip = FALSE; | |
1786 | bfd_boolean relocate = FALSE; | |
1787 | asection *sreloc = _bfd_elf_get_dynamic_reloc_section | |
1788 | (input_bfd, input_section, | |
1789 | /*RELA*/ TRUE); | |
1790 | ||
1791 | BFD_ASSERT (sreloc != NULL); | |
1792 | ||
1793 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
1794 | info, | |
1795 | input_section, | |
1796 | rel->r_offset); | |
cd640291 | 1797 | |
34e967a5 MC |
1798 | if (outrel.r_offset == (bfd_vma) -1) |
1799 | skip = TRUE; | |
1800 | ||
1801 | outrel.r_addend = rel->r_addend; | |
1802 | outrel.r_offset += (input_section->output_section->vma | |
1803 | + input_section->output_offset); | |
1804 | ||
1805 | if (skip) | |
1806 | { | |
1807 | memset (&outrel, 0, sizeof outrel); | |
1808 | relocate = FALSE; | |
1809 | } | |
3c8adaca CZ |
1810 | else if (h != NULL |
1811 | && h->dynindx != -1 | |
cd640291 CM |
1812 | && (IS_ARC_PCREL_TYPE (r_type) |
1813 | || !(bfd_link_executable (info) | |
1814 | || SYMBOLIC_BIND (info, h)) | |
1815 | || ! h->def_regular)) | |
34e967a5 | 1816 | { |
94e5c971 | 1817 | BFD_ASSERT (h != NULL); |
34e967a5 MC |
1818 | if ((input_section->flags & SEC_ALLOC) != 0) |
1819 | relocate = FALSE; | |
1820 | else | |
1821 | relocate = TRUE; | |
94e5c971 CZ |
1822 | |
1823 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
1824 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1825 | } | |
1826 | else | |
1827 | { | |
1828 | /* Handle local symbols, they either do not have a | |
1829 | global hash table entry (h == NULL), or are | |
1830 | forced local due to a version script | |
1831 | (h->forced_local), or the third condition is | |
1832 | legacy, it appears to say something like, for | |
1833 | links where we are pre-binding the symbols, or | |
1834 | there's not an entry for this symbol in the | |
1835 | dynamic symbol table, and it's a regular symbol | |
1836 | not defined in a shared object, then treat the | |
1837 | symbol as local, resolve it now. */ | |
3c8adaca CZ |
1838 | relocate = TRUE; |
1839 | /* outrel.r_addend = 0; */ | |
1840 | outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE); | |
34e967a5 MC |
1841 | } |
1842 | ||
1843 | BFD_ASSERT (sreloc->contents != 0); | |
1844 | ||
1845 | loc = sreloc->contents; | |
1846 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); | |
1847 | sreloc->reloc_count += 1; | |
1848 | ||
1849 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1850 | ||
535b785f | 1851 | if (!relocate) |
34e967a5 MC |
1852 | continue; |
1853 | } | |
1854 | break; | |
1855 | default: | |
1856 | break; | |
1857 | } | |
1858 | ||
1859 | if (is_reloc_SDA_relative (howto) | |
535b785f | 1860 | && !reloc_data.sdata_begin_symbol_vma_set) |
886a2506 | 1861 | { |
4eca0228 | 1862 | _bfd_error_handler |
38f14ab8 | 1863 | ("error: linker symbol __SDATA_BEGIN__ not found"); |
886a2506 NC |
1864 | bfd_set_error (bfd_error_bad_value); |
1865 | return FALSE; | |
1866 | } | |
1867 | ||
1868 | DEBUG_ARC_RELOC (reloc_data); | |
34e967a5 | 1869 | |
2ab2f40d | 1870 | /* Make sure we have with a dynamic linker. In case of GOT and PLT |
08759e0f | 1871 | the sym_section should point to .got or .plt respectively. */ |
815dc1bc CZ |
1872 | if ((is_reloc_for_GOT (howto) || is_reloc_for_PLT (howto)) |
1873 | && reloc_data.sym_section == NULL) | |
2ab2f40d | 1874 | { |
4eca0228 | 1875 | _bfd_error_handler |
38f14ab8 | 1876 | (_("GOT and PLT relocations cannot be fixed with a non dynamic linker")); |
2ab2f40d CM |
1877 | bfd_set_error (bfd_error_bad_value); |
1878 | return FALSE; | |
1879 | } | |
1880 | ||
f7e8b360 NC |
1881 | msg = NULL; |
1882 | switch (arc_do_relocation (contents, reloc_data, info)) | |
1883 | { | |
1884 | case bfd_reloc_ok: | |
1885 | continue; /* The reloc processing loop. */ | |
1886 | ||
1887 | case bfd_reloc_overflow: | |
1888 | (*info->callbacks->reloc_overflow) | |
1889 | (info, (h ? &h->root : NULL), reloc_data.symbol_name, howto->name, (bfd_vma) 0, | |
1890 | input_bfd, input_section, rel->r_offset); | |
1891 | break; | |
1892 | ||
1893 | case bfd_reloc_undefined: | |
1894 | (*info->callbacks->undefined_symbol) | |
1895 | (info, reloc_data.symbol_name, input_bfd, input_section, rel->r_offset, TRUE); | |
1896 | break; | |
1897 | ||
1898 | case bfd_reloc_other: | |
695344c0 | 1899 | /* xgettext:c-format */ |
871b3ab2 | 1900 | msg = _("%pB(%pA): warning: unaligned access to symbol '%s' in the small data area"); |
f7e8b360 NC |
1901 | break; |
1902 | ||
1903 | case bfd_reloc_outofrange: | |
695344c0 | 1904 | /* xgettext:c-format */ |
871b3ab2 | 1905 | msg = _("%pB(%pA): internal error: out of range error"); |
f7e8b360 NC |
1906 | break; |
1907 | ||
1908 | case bfd_reloc_notsupported: | |
695344c0 | 1909 | /* xgettext:c-format */ |
871b3ab2 | 1910 | msg = _("%pB(%pA): internal error: unsupported relocation error"); |
f7e8b360 NC |
1911 | break; |
1912 | ||
1913 | case bfd_reloc_dangerous: | |
695344c0 | 1914 | /* xgettext:c-format */ |
871b3ab2 | 1915 | msg = _("%pB(%pA): internal error: dangerous relocation"); |
f7e8b360 NC |
1916 | break; |
1917 | ||
1918 | default: | |
695344c0 | 1919 | /* xgettext:c-format */ |
871b3ab2 | 1920 | msg = _("%pB(%pA): internal error: unknown error"); |
f7e8b360 NC |
1921 | break; |
1922 | } | |
1923 | ||
1924 | if (msg) | |
1925 | _bfd_error_handler (msg, input_bfd, input_section, reloc_data.symbol_name); | |
1926 | return FALSE; | |
886a2506 NC |
1927 | } |
1928 | ||
1929 | return TRUE; | |
1930 | } | |
1931 | ||
8a36df4d CM |
1932 | #define elf_arc_hash_table(p) \ |
1933 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
1934 | == ARC_ELF_DATA ? ((struct elf_arc_link_hash_table *) ((p)->hash)) : NULL) | |
1935 | ||
886a2506 | 1936 | static bfd_boolean |
08759e0f | 1937 | elf_arc_check_relocs (bfd * abfd, |
886a2506 | 1938 | struct bfd_link_info * info, |
34e967a5 | 1939 | asection * sec, |
886a2506 NC |
1940 | const Elf_Internal_Rela * relocs) |
1941 | { | |
34e967a5 MC |
1942 | Elf_Internal_Shdr * symtab_hdr; |
1943 | struct elf_link_hash_entry ** sym_hashes; | |
34e967a5 MC |
1944 | const Elf_Internal_Rela * rel; |
1945 | const Elf_Internal_Rela * rel_end; | |
1946 | bfd * dynobj; | |
1947 | asection * sreloc = NULL; | |
e3d1d408 | 1948 | struct elf_link_hash_table * htab = elf_hash_table (info); |
34e967a5 MC |
1949 | |
1950 | if (bfd_link_relocatable (info)) | |
1951 | return TRUE; | |
886a2506 | 1952 | |
e3d1d408 CM |
1953 | if (htab->dynobj == NULL) |
1954 | htab->dynobj = abfd; | |
1955 | ||
886a2506 NC |
1956 | dynobj = (elf_hash_table (info))->dynobj; |
1957 | symtab_hdr = &((elf_tdata (abfd))->symtab_hdr); | |
1958 | sym_hashes = elf_sym_hashes (abfd); | |
886a2506 NC |
1959 | |
1960 | rel_end = relocs + sec->reloc_count; | |
1961 | for (rel = relocs; rel < rel_end; rel++) | |
1962 | { | |
1963 | enum elf_arc_reloc_type r_type; | |
1964 | reloc_howto_type *howto; | |
1965 | unsigned long r_symndx; | |
1966 | struct elf_link_hash_entry *h; | |
1967 | ||
1968 | r_type = ELF32_R_TYPE (rel->r_info); | |
1969 | ||
1970 | if (r_type >= (int) R_ARC_max) | |
1971 | { | |
1972 | bfd_set_error (bfd_error_bad_value); | |
1973 | return FALSE; | |
1974 | } | |
3c8adaca | 1975 | howto = arc_elf_howto (r_type); |
34e967a5 | 1976 | |
886a2506 NC |
1977 | /* Load symbol information. */ |
1978 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1979 | if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */ | |
1980 | h = NULL; | |
1981 | else /* Global one. */ | |
2936af90 CM |
1982 | { |
1983 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1984 | while (h->root.type == bfd_link_hash_indirect | |
1985 | || h->root.type == bfd_link_hash_warning) | |
1986 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1987 | } | |
886a2506 | 1988 | |
854b8506 | 1989 | |
34e967a5 MC |
1990 | switch (r_type) |
1991 | { | |
d07b621f CM |
1992 | case R_ARC_32: |
1993 | case R_ARC_32_ME: | |
1994 | /* During shared library creation, these relocs should not | |
1995 | appear in a shared library (as memory will be read only | |
1996 | and the dynamic linker can not resolve these. However | |
1997 | the error should not occur for e.g. debugging or | |
1998 | non-readonly sections. */ | |
1999 | if (h != NULL | |
2000 | && (bfd_link_dll (info) && !bfd_link_pie (info)) | |
2001 | && (sec->flags & SEC_ALLOC) != 0 | |
2002 | && (sec->flags & SEC_READONLY) != 0 | |
2003 | && ((sec->flags & SEC_CODE) != 0 | |
2004 | || (sec->flags & SEC_DEBUGGING) != 0)) | |
2005 | { | |
2006 | const char *name; | |
2007 | if (h) | |
2008 | name = h->root.root.string; | |
2009 | else | |
2010 | name = "UNKNOWN"; | |
2011 | _bfd_error_handler | |
2012 | /* xgettext:c-format */ | |
2013 | (_("%pB: relocation %s against `%s' can not be used" | |
2014 | " when making a shared object; recompile with -fPIC"), | |
2015 | abfd, | |
2016 | arc_elf_howto (r_type)->name, | |
2017 | name); | |
2018 | bfd_set_error (bfd_error_bad_value); | |
2019 | return FALSE; | |
2020 | } | |
34e967a5 MC |
2021 | |
2022 | /* In some cases we are not setting the 'non_got_ref' | |
2023 | flag, even though the relocations don't require a GOT | |
2024 | access. We should extend the testing in this area to | |
2025 | ensure that no significant cases are being missed. */ | |
2026 | if (h) | |
2027 | h->non_got_ref = 1; | |
2028 | /* FALLTHROUGH */ | |
2029 | case R_ARC_PC32: | |
2030 | case R_ARC_32_PCREL: | |
8a36df4d | 2031 | if ((bfd_link_pic (info)) |
34e967a5 MC |
2032 | && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL) |
2033 | || (h != NULL | |
34e967a5 MC |
2034 | && (!info->symbolic || !h->def_regular)))) |
2035 | { | |
2036 | if (sreloc == NULL) | |
2037 | { | |
e3d1d408 CM |
2038 | if (info->dynamic |
2039 | && ! htab->dynamic_sections_created | |
2040 | && ! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
2041 | return FALSE; | |
34e967a5 MC |
2042 | sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj, |
2043 | 2, abfd, | |
2044 | /*rela*/ | |
2045 | TRUE); | |
2046 | ||
2047 | if (sreloc == NULL) | |
2048 | return FALSE; | |
2049 | } | |
2050 | sreloc->size += sizeof (Elf32_External_Rela); | |
2051 | ||
2052 | } | |
2053 | default: | |
2054 | break; | |
2055 | } | |
2056 | ||
535b785f | 2057 | if (is_reloc_for_PLT (howto)) |
886a2506 NC |
2058 | { |
2059 | if (h == NULL) | |
2060 | continue; | |
2061 | else | |
ab16fcd7 CM |
2062 | if (h->forced_local == 0) |
2063 | h->needs_plt = 1; | |
886a2506 NC |
2064 | } |
2065 | ||
08759e0f | 2066 | /* Add info to the symbol got_entry_list. */ |
535b785f AM |
2067 | if (is_reloc_for_GOT (howto) |
2068 | || is_reloc_for_TLS (howto)) | |
34e967a5 | 2069 | { |
d07b621f CM |
2070 | if (bfd_link_dll (info) && !bfd_link_pie (info) |
2071 | && (r_type == R_ARC_TLS_LE_32 || r_type == R_ARC_TLS_LE_S9)) | |
2072 | { | |
2073 | const char *name; | |
2074 | if (h) | |
2075 | name = h->root.root.string; | |
2076 | else | |
2077 | /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */ | |
2078 | name = "UNKNOWN"; | |
2079 | _bfd_error_handler | |
2080 | /* xgettext:c-format */ | |
2081 | (_("%pB: relocation %s against `%s' can not be used" | |
2082 | " when making a shared object; recompile with -fPIC"), | |
2083 | abfd, | |
2084 | arc_elf_howto (r_type)->name, | |
2085 | name); | |
2086 | bfd_set_error (bfd_error_bad_value); | |
2087 | return FALSE; | |
2088 | } | |
e3d1d408 CM |
2089 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2090 | return FALSE; | |
2091 | ||
08759e0f CM |
2092 | arc_fill_got_info_for_reloc ( |
2093 | arc_got_entry_type_for_reloc (howto), | |
2094 | get_got_entry_list_for_symbol (abfd, r_symndx, h), | |
2095 | info, | |
2096 | h); | |
34e967a5 MC |
2097 | } |
2098 | } | |
886a2506 | 2099 | |
34e967a5 MC |
2100 | return TRUE; |
2101 | } | |
886a2506 | 2102 | |
34e967a5 | 2103 | #define ELF_DYNAMIC_INTERPRETER "/sbin/ld-uClibc.so" |
886a2506 | 2104 | |
34e967a5 MC |
2105 | static struct plt_version_t * |
2106 | arc_get_plt_version (struct bfd_link_info *info) | |
886a2506 | 2107 | { |
34e967a5 | 2108 | int i; |
886a2506 | 2109 | |
34e967a5 MC |
2110 | for (i = 0; i < 1; i++) |
2111 | { | |
2112 | ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i, | |
f7e8b360 NC |
2113 | (int) plt_versions[i].entry_size, |
2114 | (int) plt_versions[i].elem_size); | |
34e967a5 | 2115 | } |
886a2506 | 2116 | |
34e967a5 | 2117 | if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2) |
886a2506 | 2118 | { |
34e967a5 MC |
2119 | if (bfd_link_pic (info)) |
2120 | return &(plt_versions[ELF_ARCV2_PIC]); | |
2121 | else | |
2122 | return &(plt_versions[ELF_ARCV2_ABS]); | |
2123 | } | |
2124 | else | |
886a2506 | 2125 | { |
34e967a5 MC |
2126 | if (bfd_link_pic (info)) |
2127 | return &(plt_versions[ELF_ARC_PIC]); | |
2128 | else | |
2129 | return &(plt_versions[ELF_ARC_ABS]); | |
886a2506 | 2130 | } |
886a2506 NC |
2131 | } |
2132 | ||
2133 | static bfd_vma | |
2134 | add_symbol_to_plt (struct bfd_link_info *info) | |
2135 | { | |
34e967a5 | 2136 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 NC |
2137 | bfd_vma ret; |
2138 | ||
34e967a5 | 2139 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
886a2506 | 2140 | |
34e967a5 MC |
2141 | /* If this is the first .plt entry, make room for the special first |
2142 | entry. */ | |
2143 | if (htab->splt->size == 0) | |
2144 | htab->splt->size += plt_data->entry_size; | |
886a2506 | 2145 | |
34e967a5 MC |
2146 | ret = htab->splt->size; |
2147 | ||
2148 | htab->splt->size += plt_data->elem_size; | |
f7e8b360 | 2149 | ARC_DEBUG ("PLT_SIZE = %d\n", (int) htab->splt->size); |
34e967a5 MC |
2150 | |
2151 | htab->sgotplt->size += 4; | |
2152 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
886a2506 NC |
2153 | |
2154 | return ret; | |
2155 | } | |
2156 | ||
34e967a5 MC |
2157 | #define PLT_DO_RELOCS_FOR_ENTRY(ABFD, DS, RELOCS) \ |
2158 | plt_do_relocs_for_symbol (ABFD, DS, RELOCS, 0, 0) | |
886a2506 NC |
2159 | |
2160 | static void | |
34e967a5 MC |
2161 | plt_do_relocs_for_symbol (bfd *abfd, |
2162 | struct elf_link_hash_table *htab, | |
2163 | const struct plt_reloc *reloc, | |
886a2506 NC |
2164 | bfd_vma plt_offset, |
2165 | bfd_vma symbol_got_offset) | |
2166 | { | |
2167 | while (SYM_ONLY (reloc->symbol) != LAST_RELOC) | |
2168 | { | |
2169 | bfd_vma relocation = 0; | |
2170 | ||
2171 | switch (SYM_ONLY (reloc->symbol)) | |
2172 | { | |
2173 | case SGOT: | |
08759e0f CM |
2174 | relocation |
2175 | = htab->sgotplt->output_section->vma | |
2176 | + htab->sgotplt->output_offset + symbol_got_offset; | |
886a2506 NC |
2177 | break; |
2178 | } | |
2179 | relocation += reloc->addend; | |
2180 | ||
34e967a5 MC |
2181 | if (IS_RELATIVE (reloc->symbol)) |
2182 | { | |
2183 | bfd_vma reloc_offset = reloc->offset; | |
2184 | reloc_offset -= (IS_INSN_32 (reloc->symbol)) ? 4 : 0; | |
2185 | reloc_offset -= (IS_INSN_24 (reloc->symbol)) ? 2 : 0; | |
886a2506 | 2186 | |
34e967a5 MC |
2187 | relocation -= htab->splt->output_section->vma |
2188 | + htab->splt->output_offset | |
2189 | + plt_offset + reloc_offset; | |
2190 | } | |
2191 | ||
2192 | /* TODO: being ME is not a property of the relocation but of the | |
2193 | section of which is applying the relocation. */ | |
1e5885b7 | 2194 | if (IS_MIDDLE_ENDIAN (reloc->symbol) && !bfd_big_endian (abfd)) |
886a2506 | 2195 | { |
08759e0f CM |
2196 | relocation |
2197 | = ((relocation & 0xffff0000) >> 16) | |
2198 | | ((relocation & 0xffff) << 16); | |
886a2506 NC |
2199 | } |
2200 | ||
2201 | switch (reloc->size) | |
2202 | { | |
2203 | case 32: | |
34e967a5 | 2204 | bfd_put_32 (htab->splt->output_section->owner, |
886a2506 | 2205 | relocation, |
34e967a5 | 2206 | htab->splt->contents + plt_offset + reloc->offset); |
886a2506 NC |
2207 | break; |
2208 | } | |
2209 | ||
34e967a5 | 2210 | reloc = &(reloc[1]); /* Jump to next relocation. */ |
886a2506 NC |
2211 | } |
2212 | } | |
2213 | ||
2214 | static void | |
34e967a5 MC |
2215 | relocate_plt_for_symbol (bfd *output_bfd, |
2216 | struct bfd_link_info *info, | |
886a2506 NC |
2217 | struct elf_link_hash_entry *h) |
2218 | { | |
34e967a5 MC |
2219 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
2220 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
886a2506 | 2221 | |
34e967a5 MC |
2222 | bfd_vma plt_index = (h->plt.offset - plt_data->entry_size) |
2223 | / plt_data->elem_size; | |
886a2506 NC |
2224 | bfd_vma got_offset = (plt_index + 3) * 4; |
2225 | ||
f7e8b360 NC |
2226 | ARC_DEBUG ("arc_info: PLT_OFFSET = %#lx, PLT_ENTRY_VMA = %#lx, \ |
2227 | GOT_ENTRY_OFFSET = %#lx, GOT_ENTRY_VMA = %#lx, for symbol %s\n", | |
2228 | (long) h->plt.offset, | |
2229 | (long) (htab->splt->output_section->vma | |
2230 | + htab->splt->output_offset | |
2231 | + h->plt.offset), | |
2232 | (long) got_offset, | |
2233 | (long) (htab->sgotplt->output_section->vma | |
2234 | + htab->sgotplt->output_offset | |
2235 | + got_offset), | |
34e967a5 MC |
2236 | h->root.root.string); |
2237 | ||
1e5885b7 CZ |
2238 | { |
2239 | bfd_vma i = 0; | |
2240 | uint16_t *ptr = (uint16_t *) plt_data->elem; | |
f7e8b360 | 2241 | |
1e5885b7 CZ |
2242 | for (i = 0; i < plt_data->elem_size/2; i++) |
2243 | { | |
2244 | uint16_t data = ptr[i]; | |
2245 | bfd_put_16 (output_bfd, | |
2246 | (bfd_vma) data, | |
2247 | htab->splt->contents + h->plt.offset + (i*2)); | |
2248 | } | |
2249 | } | |
2250 | ||
34e967a5 MC |
2251 | plt_do_relocs_for_symbol (output_bfd, htab, |
2252 | plt_data->elem_relocs, | |
2253 | h->plt.offset, | |
886a2506 | 2254 | got_offset); |
34e967a5 MC |
2255 | |
2256 | /* Fill in the entry in the global offset table. */ | |
2257 | bfd_put_32 (output_bfd, | |
2258 | (bfd_vma) (htab->splt->output_section->vma | |
2259 | + htab->splt->output_offset), | |
2260 | htab->sgotplt->contents + got_offset); | |
2261 | ||
2262 | /* TODO: Fill in the entry in the .rela.plt section. */ | |
2263 | { | |
2264 | Elf_Internal_Rela rel; | |
2265 | bfd_byte *loc; | |
2266 | ||
2267 | rel.r_offset = (htab->sgotplt->output_section->vma | |
2268 | + htab->sgotplt->output_offset | |
2269 | + got_offset); | |
2270 | rel.r_addend = 0; | |
94e5c971 CZ |
2271 | |
2272 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
2273 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT); |
2274 | ||
2275 | loc = htab->srelplt->contents; | |
2276 | loc += plt_index * sizeof (Elf32_External_Rela); /* relA */ | |
2277 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
2278 | } | |
886a2506 NC |
2279 | } |
2280 | ||
2281 | static void | |
34e967a5 MC |
2282 | relocate_plt_for_entry (bfd *abfd, |
2283 | struct bfd_link_info *info) | |
886a2506 | 2284 | { |
34e967a5 MC |
2285 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
2286 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
886a2506 | 2287 | |
1e5885b7 CZ |
2288 | { |
2289 | bfd_vma i = 0; | |
2290 | uint16_t *ptr = (uint16_t *) plt_data->entry; | |
2291 | for (i = 0; i < plt_data->entry_size/2; i++) | |
2292 | { | |
2293 | uint16_t data = ptr[i]; | |
2294 | bfd_put_16 (abfd, | |
2295 | (bfd_vma) data, | |
2296 | htab->splt->contents + (i*2)); | |
2297 | } | |
2298 | } | |
34e967a5 | 2299 | PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs); |
886a2506 NC |
2300 | } |
2301 | ||
34e967a5 MC |
2302 | /* Desc : Adjust a symbol defined by a dynamic object and referenced |
2303 | by a regular object. The current definition is in some section of | |
2304 | the dynamic object, but we're not including those sections. We | |
2305 | have to change the definition to something the rest of the link can | |
886a2506 NC |
2306 | understand. */ |
2307 | ||
2308 | static bfd_boolean | |
2309 | elf_arc_adjust_dynamic_symbol (struct bfd_link_info *info, | |
2310 | struct elf_link_hash_entry *h) | |
2311 | { | |
34e967a5 | 2312 | asection *s; |
886a2506 | 2313 | bfd *dynobj = (elf_hash_table (info))->dynobj; |
34e967a5 | 2314 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2315 | |
34e967a5 MC |
2316 | if (h->type == STT_FUNC |
2317 | || h->type == STT_GNU_IFUNC | |
2318 | || h->needs_plt == 1) | |
886a2506 NC |
2319 | { |
2320 | if (!bfd_link_pic (info) && !h->def_dynamic && !h->ref_dynamic) | |
2321 | { | |
2322 | /* This case can occur if we saw a PLT32 reloc in an input | |
2323 | file, but the symbol was never referred to by a dynamic | |
2324 | object. In such a case, we don't actually need to build | |
2325 | a procedure linkage table, and we can just do a PC32 | |
2326 | reloc instead. */ | |
2327 | BFD_ASSERT (h->needs_plt); | |
2328 | return TRUE; | |
2329 | } | |
2330 | ||
2331 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2332 | if (h->dynindx == -1 && !h->forced_local | |
2333 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
2334 | return FALSE; | |
2335 | ||
34e967a5 MC |
2336 | if (bfd_link_pic (info) |
2337 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
886a2506 NC |
2338 | { |
2339 | bfd_vma loc = add_symbol_to_plt (info); | |
2340 | ||
08759e0f | 2341 | if (bfd_link_executable (info) && !h->def_regular) |
886a2506 | 2342 | { |
34e967a5 | 2343 | h->root.u.def.section = htab->splt; |
886a2506 NC |
2344 | h->root.u.def.value = loc; |
2345 | } | |
2346 | h->plt.offset = loc; | |
2347 | } | |
34e967a5 MC |
2348 | else |
2349 | { | |
2350 | h->plt.offset = (bfd_vma) -1; | |
2351 | h->needs_plt = 0; | |
2352 | } | |
2353 | return TRUE; | |
886a2506 | 2354 | } |
34e967a5 MC |
2355 | |
2356 | /* If this is a weak symbol, and there is a real definition, the | |
2357 | processor independent code will have arranged for us to see the | |
2358 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2359 | if (h->is_weakalias) |
886a2506 | 2360 | { |
60d67dc8 AM |
2361 | struct elf_link_hash_entry *def = weakdef (h); |
2362 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2363 | h->root.u.def.section = def->root.u.def.section; | |
2364 | h->root.u.def.value = def->root.u.def.value; | |
34e967a5 | 2365 | return TRUE; |
886a2506 NC |
2366 | } |
2367 | ||
34e967a5 MC |
2368 | /* This is a reference to a symbol defined by a dynamic object which |
2369 | is not a function. */ | |
2370 | ||
2371 | /* If we are creating a shared library, we must presume that the | |
2372 | only references to the symbol are via the global offset table. | |
2373 | For such cases we need not do anything here; the relocations will | |
2374 | be handled correctly by relocate_section. */ | |
3c8adaca CZ |
2375 | if (!bfd_link_executable (info)) |
2376 | return TRUE; | |
2377 | ||
2378 | /* If there are no non-GOT references, we do not need a copy | |
2379 | relocation. */ | |
2380 | if (!h->non_got_ref) | |
34e967a5 MC |
2381 | return TRUE; |
2382 | ||
3c8adaca CZ |
2383 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2384 | if (info->nocopyreloc) | |
2385 | { | |
2386 | h->non_got_ref = 0; | |
2387 | return TRUE; | |
2388 | } | |
2389 | ||
34e967a5 MC |
2390 | /* We must allocate the symbol in our .dynbss section, which will |
2391 | become part of the .bss section of the executable. There will be | |
2392 | an entry for this symbol in the .dynsym section. The dynamic | |
2393 | object will contain position independent code, so all references | |
2394 | from the dynamic object to this symbol will go through the global | |
2395 | offset table. The dynamic linker will use the .dynsym entry to | |
2396 | determine the address it must put in the global offset table, so | |
2397 | both the dynamic object and the regular object will refer to the | |
2398 | same memory location for the variable. */ | |
2399 | ||
3c8adaca CZ |
2400 | if (htab == NULL) |
2401 | return FALSE; | |
34e967a5 MC |
2402 | |
2403 | /* We must generate a R_ARC_COPY reloc to tell the dynamic linker to | |
2404 | copy the initial value out of the dynamic object and into the | |
2405 | runtime process image. We need to remember the offset into the | |
2406 | .rela.bss section we are going to use. */ | |
2407 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2408 | { | |
8a36df4d | 2409 | struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info); |
34e967a5 | 2410 | |
9d19e4fd AM |
2411 | BFD_ASSERT (arc_htab->elf.srelbss != NULL); |
2412 | arc_htab->elf.srelbss->size += sizeof (Elf32_External_Rela); | |
34e967a5 MC |
2413 | h->needs_copy = 1; |
2414 | } | |
2415 | ||
8a36df4d | 2416 | /* TODO: Move this also to arc_hash_table. */ |
3c8adaca CZ |
2417 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
2418 | BFD_ASSERT (s != NULL); | |
34e967a5 | 2419 | |
3c8adaca | 2420 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
886a2506 NC |
2421 | } |
2422 | ||
2423 | /* Function : elf_arc_finish_dynamic_symbol | |
2424 | Brief : Finish up dynamic symbol handling. We set the | |
34e967a5 | 2425 | contents of various dynamic sections here. |
886a2506 | 2426 | Args : output_bfd : |
34e967a5 MC |
2427 | info : |
2428 | h : | |
2429 | sym : | |
886a2506 | 2430 | Returns : True/False as the return status. */ |
34e967a5 | 2431 | |
886a2506 NC |
2432 | static bfd_boolean |
2433 | elf_arc_finish_dynamic_symbol (bfd * output_bfd, | |
2434 | struct bfd_link_info *info, | |
2435 | struct elf_link_hash_entry *h, | |
2436 | Elf_Internal_Sym * sym) | |
2437 | { | |
34e967a5 | 2438 | if (h->plt.offset != (bfd_vma) -1) |
886a2506 | 2439 | { |
34e967a5 MC |
2440 | relocate_plt_for_symbol (output_bfd, info, h); |
2441 | ||
2442 | if (!h->def_regular) | |
886a2506 | 2443 | { |
34e967a5 MC |
2444 | /* Mark the symbol as undefined, rather than as defined in |
2445 | the .plt section. Leave the value alone. */ | |
2446 | sym->st_shndx = SHN_UNDEF; | |
886a2506 | 2447 | } |
34e967a5 MC |
2448 | } |
2449 | ||
34e967a5 | 2450 | |
08759e0f CM |
2451 | /* This function traverses list of GOT entries and |
2452 | create respective dynamic relocs. */ | |
2453 | /* TODO: Make function to get list and not access the list directly. */ | |
2454 | /* TODO: Move function to relocate_section create this relocs eagerly. */ | |
854b8506 CM |
2455 | struct elf_arc_link_hash_entry *ah = |
2456 | (struct elf_arc_link_hash_entry *) h; | |
2457 | create_got_dynrelocs_for_got_info (&ah->got_ents, | |
08759e0f CM |
2458 | output_bfd, |
2459 | info, | |
2460 | h); | |
34e967a5 MC |
2461 | |
2462 | if (h->needs_copy) | |
2463 | { | |
8a36df4d CM |
2464 | struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info); |
2465 | ||
c834917f CM |
2466 | if (arc_htab == NULL) |
2467 | return FALSE; | |
2468 | ||
8a36df4d CM |
2469 | if (h->dynindx == -1 |
2470 | || (h->root.type != bfd_link_hash_defined | |
2471 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 2472 | || arc_htab->elf.srelbss == NULL) |
8a36df4d CM |
2473 | abort (); |
2474 | ||
34e967a5 MC |
2475 | bfd_vma rel_offset = (h->root.u.def.value |
2476 | + h->root.u.def.section->output_section->vma | |
2477 | + h->root.u.def.section->output_offset); | |
2478 | ||
9d19e4fd AM |
2479 | bfd_byte * loc = arc_htab->elf.srelbss->contents |
2480 | + (arc_htab->elf.srelbss->reloc_count * sizeof (Elf32_External_Rela)); | |
2481 | arc_htab->elf.srelbss->reloc_count++; | |
34e967a5 MC |
2482 | |
2483 | Elf_Internal_Rela rel; | |
2484 | rel.r_addend = 0; | |
2485 | rel.r_offset = rel_offset; | |
94e5c971 CZ |
2486 | |
2487 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
2488 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY); |
2489 | ||
23a42089 | 2490 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
886a2506 NC |
2491 | } |
2492 | ||
2493 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2494 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2495 | || strcmp (h->root.root.string, "__DYNAMIC") == 0 | |
2496 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2497 | sym->st_shndx = SHN_ABS; | |
2498 | ||
2499 | return TRUE; | |
2500 | } | |
2501 | ||
4ade44b7 | 2502 | #define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION) \ |
34e967a5 MC |
2503 | case TAG: \ |
2504 | if (SYMBOL != NULL) \ | |
4ade44b7 AM |
2505 | h = elf_link_hash_lookup (elf_hash_table (info), \ |
2506 | SYMBOL, FALSE, FALSE, TRUE); \ | |
34e967a5 | 2507 | else if (SECTION != NULL) \ |
4ade44b7 | 2508 | s = bfd_get_linker_section (dynobj, SECTION); \ |
34e967a5 | 2509 | break; |
886a2506 | 2510 | |
d07b621f CM |
2511 | |
2512 | struct obfd_info_group { | |
2513 | bfd *output_bfd; | |
2514 | struct bfd_link_info *info; | |
2515 | }; | |
2516 | ||
2517 | static bfd_boolean | |
2518 | arc_create_forced_local_got_entries_for_tls (struct bfd_hash_entry *bh, | |
2519 | void *data) | |
2520 | { | |
2521 | struct elf_arc_link_hash_entry * h = | |
2522 | (struct elf_arc_link_hash_entry *) bh; | |
2523 | struct obfd_info_group *tmp = (struct obfd_info_group *) data; | |
2524 | ||
2525 | if (h->got_ents != NULL) | |
2526 | { | |
2527 | BFD_ASSERT (h); | |
2528 | ||
2529 | struct got_entry *list = h->got_ents; | |
2530 | ||
2531 | while (list != NULL) | |
2532 | { | |
2533 | create_got_dynrelocs_for_single_entry (list, tmp->output_bfd, | |
20b233dc CM |
2534 | tmp->info, |
2535 | (struct elf_link_hash_entry *) h); | |
d07b621f CM |
2536 | list = list->next; |
2537 | } | |
2538 | } | |
2539 | ||
2540 | return TRUE; | |
2541 | } | |
2542 | ||
2543 | ||
886a2506 NC |
2544 | /* Function : elf_arc_finish_dynamic_sections |
2545 | Brief : Finish up the dynamic sections handling. | |
2546 | Args : output_bfd : | |
34e967a5 MC |
2547 | info : |
2548 | h : | |
2549 | sym : | |
886a2506 | 2550 | Returns : True/False as the return status. */ |
34e967a5 | 2551 | |
886a2506 | 2552 | static bfd_boolean |
34e967a5 MC |
2553 | elf_arc_finish_dynamic_sections (bfd * output_bfd, |
2554 | struct bfd_link_info *info) | |
886a2506 | 2555 | { |
34e967a5 | 2556 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2557 | bfd *dynobj = (elf_hash_table (info))->dynobj; |
034fed0b | 2558 | asection *sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
886a2506 | 2559 | |
034fed0b | 2560 | if (sdyn) |
886a2506 NC |
2561 | { |
2562 | Elf32_External_Dyn *dyncon, *dynconend; | |
2563 | ||
034fed0b | 2564 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
08759e0f | 2565 | dynconend |
034fed0b | 2566 | = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
886a2506 NC |
2567 | for (; dyncon < dynconend; dyncon++) |
2568 | { | |
2569 | Elf_Internal_Dyn internal_dyn; | |
2570 | bfd_boolean do_it = FALSE; | |
2571 | ||
2572 | struct elf_link_hash_entry *h = NULL; | |
2573 | asection *s = NULL; | |
2574 | ||
2575 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &internal_dyn); | |
2576 | ||
2577 | switch (internal_dyn.d_tag) | |
2578 | { | |
65b94e90 CM |
2579 | GET_SYMBOL_OR_SECTION (DT_INIT, info->init_function, NULL) |
2580 | GET_SYMBOL_OR_SECTION (DT_FINI, info->fini_function, NULL) | |
4ade44b7 AM |
2581 | GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt") |
2582 | GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt") | |
2583 | GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt") | |
4ade44b7 AM |
2584 | GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version") |
2585 | GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d") | |
2586 | GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r") | |
886a2506 NC |
2587 | default: |
2588 | break; | |
2589 | } | |
2590 | ||
34e967a5 | 2591 | /* In case the dynamic symbols should be updated with a symbol. */ |
886a2506 NC |
2592 | if (h != NULL |
2593 | && (h->root.type == bfd_link_hash_defined | |
34e967a5 | 2594 | || h->root.type == bfd_link_hash_defweak)) |
886a2506 NC |
2595 | { |
2596 | asection *asec_ptr; | |
2597 | ||
2598 | internal_dyn.d_un.d_val = h->root.u.def.value; | |
2599 | asec_ptr = h->root.u.def.section; | |
2600 | if (asec_ptr->output_section != NULL) | |
2601 | { | |
2602 | internal_dyn.d_un.d_val += | |
08759e0f CM |
2603 | (asec_ptr->output_section->vma |
2604 | + asec_ptr->output_offset); | |
886a2506 NC |
2605 | } |
2606 | else | |
2607 | { | |
34e967a5 MC |
2608 | /* The symbol is imported from another shared |
2609 | library and does not apply to this one. */ | |
886a2506 NC |
2610 | internal_dyn.d_un.d_val = 0; |
2611 | } | |
2612 | do_it = TRUE; | |
2613 | } | |
2614 | else if (s != NULL) /* With a section information. */ | |
2615 | { | |
2616 | switch (internal_dyn.d_tag) | |
2617 | { | |
2618 | case DT_PLTGOT: | |
2619 | case DT_JMPREL: | |
34e967a5 MC |
2620 | case DT_VERSYM: |
2621 | case DT_VERDEF: | |
2622 | case DT_VERNEED: | |
4ade44b7 AM |
2623 | internal_dyn.d_un.d_ptr = (s->output_section->vma |
2624 | + s->output_offset); | |
886a2506 NC |
2625 | do_it = TRUE; |
2626 | break; | |
2627 | ||
2628 | case DT_PLTRELSZ: | |
2629 | internal_dyn.d_un.d_val = s->size; | |
2630 | do_it = TRUE; | |
2631 | break; | |
2632 | ||
886a2506 NC |
2633 | default: |
2634 | break; | |
2635 | } | |
2636 | } | |
2637 | ||
4ade44b7 | 2638 | if (do_it) |
886a2506 NC |
2639 | bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon); |
2640 | } | |
2641 | ||
34e967a5 | 2642 | if (htab->splt->size > 0) |
886a2506 | 2643 | { |
34e967a5 | 2644 | relocate_plt_for_entry (output_bfd, info); |
886a2506 NC |
2645 | } |
2646 | ||
34e967a5 | 2647 | /* TODO: Validate this. */ |
034fed0b AM |
2648 | if (htab->srelplt->output_section != bfd_abs_section_ptr) |
2649 | elf_section_data (htab->srelplt->output_section) | |
2650 | ->this_hdr.sh_entsize = 12; | |
886a2506 NC |
2651 | } |
2652 | ||
2653 | /* Fill in the first three entries in the global offset table. */ | |
34e967a5 | 2654 | if (htab->sgot) |
886a2506 | 2655 | { |
3b63d2ce CM |
2656 | struct elf_link_hash_entry *h; |
2657 | h = elf_link_hash_lookup (elf_hash_table (info), "_GLOBAL_OFFSET_TABLE_", | |
2658 | FALSE, FALSE, TRUE); | |
2659 | ||
2660 | if (h != NULL && h->root.type != bfd_link_hash_undefined | |
2661 | && h->root.u.def.section != NULL) | |
886a2506 | 2662 | { |
3b63d2ce CM |
2663 | asection *sec = h->root.u.def.section; |
2664 | ||
034fed0b | 2665 | if (sdyn == NULL) |
886a2506 | 2666 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3b63d2ce | 2667 | sec->contents); |
886a2506 NC |
2668 | else |
2669 | bfd_put_32 (output_bfd, | |
034fed0b | 2670 | sdyn->output_section->vma + sdyn->output_offset, |
3b63d2ce CM |
2671 | sec->contents); |
2672 | bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 4); | |
2673 | bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 8); | |
886a2506 NC |
2674 | } |
2675 | } | |
2676 | ||
d07b621f CM |
2677 | struct obfd_info_group group; |
2678 | group.output_bfd = output_bfd; | |
2679 | group.info = info; | |
2680 | bfd_hash_traverse (&info->hash->table, | |
2681 | arc_create_forced_local_got_entries_for_tls, &group); | |
2682 | ||
886a2506 NC |
2683 | return TRUE; |
2684 | } | |
2685 | ||
34e967a5 MC |
2686 | #define ADD_DYNAMIC_SYMBOL(NAME, TAG) \ |
2687 | h = elf_link_hash_lookup (elf_hash_table (info), \ | |
2688 | NAME, FALSE, FALSE, FALSE); \ | |
2689 | if ((h != NULL && (h->ref_regular || h->def_regular))) \ | |
2690 | if (! _bfd_elf_add_dynamic_entry (info, TAG, 0)) \ | |
886a2506 NC |
2691 | return FALSE; |
2692 | ||
2693 | /* Set the sizes of the dynamic sections. */ | |
2694 | static bfd_boolean | |
034fed0b | 2695 | elf_arc_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
34e967a5 | 2696 | struct bfd_link_info *info) |
886a2506 | 2697 | { |
034fed0b AM |
2698 | bfd *dynobj; |
2699 | asection *s; | |
2700 | bfd_boolean relocs_exist = FALSE; | |
2701 | bfd_boolean reltext_exist = FALSE; | |
34e967a5 | 2702 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2703 | |
034fed0b | 2704 | dynobj = htab->dynobj; |
886a2506 NC |
2705 | BFD_ASSERT (dynobj != NULL); |
2706 | ||
034fed0b | 2707 | if (htab->dynamic_sections_created) |
886a2506 NC |
2708 | { |
2709 | struct elf_link_hash_entry *h; | |
2710 | ||
34e967a5 MC |
2711 | /* Set the contents of the .interp section to the |
2712 | interpreter. */ | |
034fed0b | 2713 | if (bfd_link_executable (info) && !info->nointerp) |
886a2506 NC |
2714 | { |
2715 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2716 | BFD_ASSERT (s != NULL); | |
34e967a5 | 2717 | s->size = sizeof (ELF_DYNAMIC_INTERPRETER); |
886a2506 NC |
2718 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2719 | } | |
2720 | ||
34e967a5 MC |
2721 | /* Add some entries to the .dynamic section. We fill in some of |
2722 | the values later, in elf_bfd_final_link, but we must add the | |
2723 | entries now so that we know the final size of the .dynamic | |
2724 | section. Checking if the .init section is present. We also | |
2725 | create DT_INIT and DT_FINI entries if the init_str has been | |
2726 | changed by the user. */ | |
65b94e90 CM |
2727 | ADD_DYNAMIC_SYMBOL (info->init_function, DT_INIT); |
2728 | ADD_DYNAMIC_SYMBOL (info->fini_function, DT_FINI); | |
886a2506 NC |
2729 | } |
2730 | else | |
2731 | { | |
34e967a5 MC |
2732 | /* We may have created entries in the .rela.got section. |
2733 | However, if we are not creating the dynamic sections, we will | |
2734 | not actually use these entries. Reset the size of .rela.got, | |
2735 | which will cause it to get stripped from the output file | |
2736 | below. */ | |
2737 | if (htab->srelgot != NULL) | |
2738 | htab->srelgot->size = 0; | |
886a2506 NC |
2739 | } |
2740 | ||
2741 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2742 | { | |
34e967a5 | 2743 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
886a2506 NC |
2744 | continue; |
2745 | ||
034fed0b AM |
2746 | if (s == htab->splt |
2747 | || s == htab->sgot | |
2748 | || s == htab->sgotplt | |
2749 | || s == htab->sdynbss) | |
886a2506 | 2750 | { |
034fed0b AM |
2751 | /* Strip this section if we don't need it. */ |
2752 | } | |
2753 | else if (strncmp (s->name, ".rela", 5) == 0) | |
2754 | { | |
2755 | if (s->size != 0 && s != htab->srelplt) | |
34e967a5 | 2756 | { |
034fed0b | 2757 | if (!reltext_exist) |
34e967a5 | 2758 | { |
034fed0b AM |
2759 | const char *name = s->name + 5; |
2760 | bfd *ibfd; | |
2761 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) | |
64aa8e03 CM |
2762 | if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour |
2763 | && ibfd->flags & DYNAMIC) | |
034fed0b AM |
2764 | { |
2765 | asection *target = bfd_get_section_by_name (ibfd, name); | |
2766 | if (target != NULL | |
2767 | && elf_section_data (target)->sreloc == s | |
2768 | && ((target->output_section->flags | |
2769 | & (SEC_READONLY | SEC_ALLOC)) | |
2770 | == (SEC_READONLY | SEC_ALLOC))) | |
2771 | { | |
2772 | reltext_exist = TRUE; | |
2773 | break; | |
2774 | } | |
2775 | } | |
34e967a5 | 2776 | } |
034fed0b | 2777 | relocs_exist = TRUE; |
34e967a5 | 2778 | } |
886a2506 | 2779 | |
34e967a5 MC |
2780 | /* We use the reloc_count field as a counter if we need to |
2781 | copy relocs into the output file. */ | |
2782 | s->reloc_count = 0; | |
886a2506 | 2783 | } |
034fed0b AM |
2784 | else |
2785 | { | |
2786 | /* It's not one of our sections, so don't allocate space. */ | |
2787 | continue; | |
2788 | } | |
34e967a5 | 2789 | |
034fed0b AM |
2790 | if (s->size == 0) |
2791 | { | |
2792 | s->flags |= SEC_EXCLUDE; | |
2793 | continue; | |
2794 | } | |
34e967a5 | 2795 | |
034fed0b AM |
2796 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2797 | continue; | |
34e967a5 | 2798 | |
034fed0b AM |
2799 | /* Allocate memory for the section contents. */ |
2800 | s->contents = bfd_zalloc (dynobj, s->size); | |
2801 | if (s->contents == NULL) | |
34e967a5 | 2802 | return FALSE; |
886a2506 NC |
2803 | } |
2804 | ||
034fed0b | 2805 | if (htab->dynamic_sections_created) |
886a2506 | 2806 | { |
34e967a5 MC |
2807 | /* TODO: Check if this is needed. */ |
2808 | if (!bfd_link_pic (info)) | |
2809 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2810 | return FALSE; | |
2811 | ||
2812 | if (htab->splt && (htab->splt->flags & SEC_EXCLUDE) == 0) | |
886a2506 NC |
2813 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
2814 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2815 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
034fed0b | 2816 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) |
886a2506 NC |
2817 | return FALSE; |
2818 | ||
034fed0b | 2819 | if (relocs_exist) |
886a2506 NC |
2820 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
2821 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
2ab2f40d | 2822 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, |
034fed0b | 2823 | sizeof (Elf32_External_Rela))) |
886a2506 NC |
2824 | return FALSE; |
2825 | ||
034fed0b | 2826 | if (reltext_exist) |
886a2506 NC |
2827 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
2828 | return FALSE; | |
2829 | } | |
2830 | ||
2831 | return TRUE; | |
2832 | } | |
2833 | ||
0f7f3789 CM |
2834 | |
2835 | /* Classify dynamic relocs such that -z combreloc can reorder and combine | |
2836 | them. */ | |
2837 | static enum elf_reloc_type_class | |
2838 | elf32_arc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2839 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2840 | const Elf_Internal_Rela *rela) | |
2841 | { | |
2842 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2843 | { | |
2844 | case R_ARC_RELATIVE: | |
2845 | return reloc_class_relative; | |
2846 | case R_ARC_JMP_SLOT: | |
2847 | return reloc_class_plt; | |
2848 | case R_ARC_COPY: | |
2849 | return reloc_class_copy; | |
2850 | /* TODO: Needed in future to support ifunc. */ | |
2851 | /* | |
2852 | case R_ARC_IRELATIVE: | |
2853 | return reloc_class_ifunc; | |
2854 | */ | |
2855 | default: | |
2856 | return reloc_class_normal; | |
2857 | } | |
2858 | } | |
2859 | ||
34e967a5 MC |
2860 | const struct elf_size_info arc_elf32_size_info = |
2861 | { | |
2862 | sizeof (Elf32_External_Ehdr), | |
2863 | sizeof (Elf32_External_Phdr), | |
2864 | sizeof (Elf32_External_Shdr), | |
2865 | sizeof (Elf32_External_Rel), | |
2866 | sizeof (Elf32_External_Rela), | |
2867 | sizeof (Elf32_External_Sym), | |
2868 | sizeof (Elf32_External_Dyn), | |
2869 | sizeof (Elf_External_Note), | |
2870 | 4, | |
2871 | 1, | |
2872 | 32, 2, | |
2873 | ELFCLASS32, EV_CURRENT, | |
2874 | bfd_elf32_write_out_phdrs, | |
2875 | bfd_elf32_write_shdrs_and_ehdr, | |
2876 | bfd_elf32_checksum_contents, | |
2877 | bfd_elf32_write_relocs, | |
2878 | bfd_elf32_swap_symbol_in, | |
2879 | bfd_elf32_swap_symbol_out, | |
2880 | bfd_elf32_slurp_reloc_table, | |
2881 | bfd_elf32_slurp_symbol_table, | |
2882 | bfd_elf32_swap_dyn_in, | |
2883 | bfd_elf32_swap_dyn_out, | |
2884 | bfd_elf32_swap_reloc_in, | |
2885 | bfd_elf32_swap_reloc_out, | |
2886 | bfd_elf32_swap_reloca_in, | |
2887 | bfd_elf32_swap_reloca_out | |
2888 | }; | |
2889 | ||
2890 | #define elf_backend_size_info arc_elf32_size_info | |
2891 | ||
47f7f636 AK |
2892 | /* GDB expects general purpose registers to be in section .reg. However Linux |
2893 | kernel doesn't create this section and instead writes registers to NOTE | |
2894 | section. It is up to the binutils to create a pseudo-section .reg from the | |
2895 | contents of NOTE. Also BFD will read pid and signal number from NOTE. This | |
2896 | function relies on offsets inside elf_prstatus structure in Linux to be | |
2897 | stable. */ | |
2898 | ||
2899 | static bfd_boolean | |
2900 | elf32_arc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2901 | { | |
2902 | int offset; | |
2903 | size_t size; | |
2904 | ||
2905 | switch (note->descsz) | |
2906 | { | |
2907 | default: | |
2908 | return FALSE; | |
2909 | ||
2910 | case 236: /* sizeof (struct elf_prstatus) on Linux/arc. */ | |
2911 | /* pr_cursig */ | |
2912 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
2913 | /* pr_pid */ | |
2914 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
2915 | /* pr_regs */ | |
2916 | offset = 72; | |
2917 | size = (40 * 4); /* There are 40 registers in user_regs_struct. */ | |
2918 | break; | |
2919 | } | |
2920 | /* Make a ".reg/999" section. */ | |
2921 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, | |
2922 | note->descpos + offset); | |
2923 | } | |
2924 | ||
53a346d8 CZ |
2925 | /* Determine whether an object attribute tag takes an integer, a |
2926 | string or both. */ | |
2927 | ||
2928 | static int | |
2929 | elf32_arc_obj_attrs_arg_type (int tag) | |
2930 | { | |
2931 | if (tag == Tag_ARC_CPU_name | |
2932 | || tag == Tag_ARC_ISA_config | |
2933 | || tag == Tag_ARC_ISA_apex) | |
2934 | return ATTR_TYPE_FLAG_STR_VAL; | |
2935 | else if (tag < (Tag_ARC_ISA_mpy_option + 1)) | |
2936 | return ATTR_TYPE_FLAG_INT_VAL; | |
2937 | else | |
2938 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; | |
2939 | } | |
2940 | ||
2941 | /* Attribute numbers >=14 can be safely ignored. */ | |
2942 | ||
2943 | static bfd_boolean | |
2944 | elf32_arc_obj_attrs_handle_unknown (bfd *abfd, int tag) | |
2945 | { | |
2946 | if ((tag & 127) < (Tag_ARC_ISA_mpy_option + 1)) | |
2947 | { | |
2948 | _bfd_error_handler | |
38f14ab8 | 2949 | (_("%pB: unknown mandatory ARC object attribute %d"), |
53a346d8 CZ |
2950 | abfd, tag); |
2951 | bfd_set_error (bfd_error_bad_value); | |
2952 | return FALSE; | |
2953 | } | |
2954 | else | |
2955 | { | |
2956 | _bfd_error_handler | |
38f14ab8 | 2957 | (_("warning: %pB: unknown ARC object attribute %d"), |
53a346d8 CZ |
2958 | abfd, tag); |
2959 | return TRUE; | |
2960 | } | |
2961 | } | |
2962 | ||
2963 | /* Handle an ARC specific section when reading an object file. This is | |
2964 | called when bfd_section_from_shdr finds a section with an unknown | |
2965 | type. */ | |
2966 | ||
2967 | static bfd_boolean | |
2968 | elf32_arc_section_from_shdr (bfd *abfd, | |
2969 | Elf_Internal_Shdr * hdr, | |
2970 | const char *name, | |
2971 | int shindex) | |
2972 | { | |
2973 | switch (hdr->sh_type) | |
2974 | { | |
6af04484 | 2975 | case 0x0c: /* MWDT specific section, don't complain about it. */ |
53a346d8 CZ |
2976 | case SHT_ARC_ATTRIBUTES: |
2977 | break; | |
2978 | ||
2979 | default: | |
2980 | return FALSE; | |
2981 | } | |
2982 | ||
2983 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
2984 | return FALSE; | |
2985 | ||
2986 | return TRUE; | |
2987 | } | |
2988 | ||
6d00b590 | 2989 | #define TARGET_LITTLE_SYM arc_elf32_le_vec |
47b0e7ad | 2990 | #define TARGET_LITTLE_NAME "elf32-littlearc" |
886a2506 NC |
2991 | #define TARGET_BIG_SYM arc_elf32_be_vec |
2992 | #define TARGET_BIG_NAME "elf32-bigarc" | |
2993 | #define ELF_ARCH bfd_arch_arc | |
8a36df4d | 2994 | #define ELF_TARGET_ID ARC_ELF_DATA |
886a2506 NC |
2995 | #define ELF_MACHINE_CODE EM_ARC_COMPACT |
2996 | #define ELF_MACHINE_ALT1 EM_ARC_COMPACT2 | |
2997 | #define ELF_MAXPAGESIZE 0x2000 | |
2998 | ||
34e967a5 MC |
2999 | #define bfd_elf32_bfd_link_hash_table_create arc_elf_link_hash_table_create |
3000 | ||
3001 | #define bfd_elf32_bfd_merge_private_bfd_data arc_elf_merge_private_bfd_data | |
3002 | #define bfd_elf32_bfd_reloc_type_lookup arc_elf32_bfd_reloc_type_lookup | |
3003 | #define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags | |
3004 | #define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data | |
3005 | #define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data | |
3006 | ||
886a2506 NC |
3007 | #define elf_info_to_howto_rel arc_info_to_howto_rel |
3008 | #define elf_backend_object_p arc_elf_object_p | |
3009 | #define elf_backend_final_write_processing arc_elf_final_write_processing | |
3010 | ||
3011 | #define elf_backend_relocate_section elf_arc_relocate_section | |
3012 | #define elf_backend_check_relocs elf_arc_check_relocs | |
9d19e4fd | 3013 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
886a2506 | 3014 | |
0f7f3789 CM |
3015 | #define elf_backend_reloc_type_class elf32_arc_reloc_type_class |
3016 | ||
886a2506 NC |
3017 | #define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol |
3018 | #define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol | |
3019 | ||
3020 | #define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections | |
3021 | #define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections | |
3022 | ||
3023 | #define elf_backend_can_gc_sections 1 | |
3024 | #define elf_backend_want_got_plt 1 | |
3025 | #define elf_backend_plt_readonly 1 | |
34e967a5 | 3026 | #define elf_backend_rela_plts_and_copies_p 1 |
886a2506 NC |
3027 | #define elf_backend_want_plt_sym 0 |
3028 | #define elf_backend_got_header_size 12 | |
64f52338 | 3029 | #define elf_backend_dtrel_excludes_plt 1 |
886a2506 NC |
3030 | |
3031 | #define elf_backend_may_use_rel_p 0 | |
3032 | #define elf_backend_may_use_rela_p 1 | |
3033 | #define elf_backend_default_use_rela_p 1 | |
252b5132 | 3034 | |
47f7f636 AK |
3035 | #define elf_backend_grok_prstatus elf32_arc_grok_prstatus |
3036 | ||
3c8adaca CZ |
3037 | #define elf_backend_default_execstack 0 |
3038 | ||
53a346d8 CZ |
3039 | #undef elf_backend_obj_attrs_vendor |
3040 | #define elf_backend_obj_attrs_vendor "ARC" | |
3041 | #undef elf_backend_obj_attrs_section | |
3042 | #define elf_backend_obj_attrs_section ".ARC.attributes" | |
3043 | #undef elf_backend_obj_attrs_arg_type | |
3044 | #define elf_backend_obj_attrs_arg_type elf32_arc_obj_attrs_arg_type | |
3045 | #undef elf_backend_obj_attrs_section_type | |
3046 | #define elf_backend_obj_attrs_section_type SHT_ARC_ATTRIBUTES | |
07d6d2b8 | 3047 | #define elf_backend_obj_attrs_handle_unknown elf32_arc_obj_attrs_handle_unknown |
53a346d8 | 3048 | |
07d6d2b8 | 3049 | #define elf_backend_section_from_shdr elf32_arc_section_from_shdr |
53a346d8 | 3050 | |
252b5132 | 3051 | #include "elf32-target.h" |