Commit | Line | Data |
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252b5132 | 1 | /* ARC-specific support for 32-bit ELF |
82704155 | 2 | Copyright (C) 1994-2019 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 | |
886a2506 NC |
74 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
75 | case VALUE: \ | |
b05a65d0 | 76 | return "R_" #TYPE; \ |
886a2506 NC |
77 | break; |
78 | ||
79 | static ATTRIBUTE_UNUSED const char * | |
80 | reloc_type_to_name (unsigned int type) | |
81 | { | |
82 | switch (type) | |
83 | { | |
84 | #include "elf/arc-reloc.def" | |
85 | ||
86 | default: | |
87 | return "UNKNOWN"; | |
88 | break; | |
89 | } | |
90 | } | |
68d20676 | 91 | |
886a2506 | 92 | #undef ARC_RELOC_HOWTO |
252b5132 | 93 | |
252b5132 RH |
94 | /* Try to minimize the amount of space occupied by relocation tables |
95 | on the ROM (not that the ROM won't be swamped by other ELF overhead). */ | |
0d2bcfaf | 96 | |
886a2506 NC |
97 | #define USE_REL 1 |
98 | ||
99 | static ATTRIBUTE_UNUSED bfd_boolean | |
100 | is_reloc_PC_relative (reloc_howto_type *howto) | |
101 | { | |
102 | return (strstr (howto->name, "PC") != NULL) ? TRUE : FALSE; | |
103 | } | |
104 | ||
105 | static bfd_boolean | |
106 | is_reloc_SDA_relative (reloc_howto_type *howto) | |
107 | { | |
108 | return (strstr (howto->name, "SDA") != NULL) ? TRUE : FALSE; | |
109 | } | |
110 | ||
111 | static bfd_boolean | |
112 | is_reloc_for_GOT (reloc_howto_type * howto) | |
113 | { | |
34e967a5 MC |
114 | if (strstr (howto->name, "TLS") != NULL) |
115 | return FALSE; | |
886a2506 NC |
116 | return (strstr (howto->name, "GOT") != NULL) ? TRUE : FALSE; |
117 | } | |
118 | ||
119 | static bfd_boolean | |
120 | is_reloc_for_PLT (reloc_howto_type * howto) | |
121 | { | |
122 | return (strstr (howto->name, "PLT") != NULL) ? TRUE : FALSE; | |
123 | } | |
124 | ||
34e967a5 MC |
125 | static bfd_boolean |
126 | is_reloc_for_TLS (reloc_howto_type *howto) | |
127 | { | |
128 | return (strstr (howto->name, "TLS") != NULL) ? TRUE : FALSE; | |
129 | } | |
130 | ||
08759e0f CM |
131 | struct arc_relocation_data |
132 | { | |
133 | bfd_signed_vma reloc_offset; | |
134 | bfd_signed_vma reloc_addend; | |
135 | bfd_signed_vma got_offset_value; | |
136 | ||
137 | bfd_signed_vma sym_value; | |
138 | asection * sym_section; | |
139 | ||
140 | reloc_howto_type *howto; | |
141 | ||
142 | asection * input_section; | |
143 | ||
144 | bfd_signed_vma sdata_begin_symbol_vma; | |
145 | bfd_boolean sdata_begin_symbol_vma_set; | |
146 | bfd_signed_vma got_symbol_vma; | |
147 | ||
148 | bfd_boolean should_relocate; | |
149 | ||
150 | const char * symbol_name; | |
151 | }; | |
152 | ||
854b8506 CM |
153 | /* ARC ELF linker hash entry. */ |
154 | struct elf_arc_link_hash_entry | |
155 | { | |
156 | struct elf_link_hash_entry root; | |
157 | ||
158 | /* Track dynamic relocs copied for this symbol. */ | |
159 | struct elf_dyn_relocs *dyn_relocs; | |
160 | ||
161 | struct got_entry *got_ents; | |
162 | }; | |
163 | ||
164 | ||
08759e0f | 165 | /* Should be included at this location due to static declarations |
68d20676 | 166 | defined before this point. */ |
08759e0f CM |
167 | #include "arc-got.h" |
168 | ||
886a2506 NC |
169 | #define arc_bfd_get_8(A,B,C) bfd_get_8(A,B) |
170 | #define arc_bfd_get_16(A,B,C) bfd_get_16(A,B) | |
72f3b6aa | 171 | #define arc_bfd_get_32(A,B,C) bfd_get_32(A,B) |
886a2506 NC |
172 | #define arc_bfd_put_8(A,B,C,D) bfd_put_8(A,B,C) |
173 | #define arc_bfd_put_16(A,B,C,D) bfd_put_16(A,B,C) | |
72f3b6aa | 174 | #define arc_bfd_put_32(A,B,C,D) bfd_put_32(A,B,C) |
886a2506 | 175 | |
252b5132 | 176 | |
47b0e7ad | 177 | static bfd_reloc_status_type |
886a2506 NC |
178 | arc_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
179 | arelent *reloc_entry, | |
180 | asymbol *symbol_in, | |
181 | void *data ATTRIBUTE_UNUSED, | |
182 | asection *input_section, | |
183 | bfd *output_bfd, | |
184 | char ** error_message ATTRIBUTE_UNUSED) | |
185 | { | |
186 | if (output_bfd != NULL) | |
187 | { | |
188 | reloc_entry->address += input_section->output_offset; | |
189 | ||
190 | /* In case of relocateable link and if the reloc is against a | |
191 | section symbol, the addend needs to be adjusted according to | |
192 | where the section symbol winds up in the output section. */ | |
193 | if ((symbol_in->flags & BSF_SECTION_SYM) && symbol_in->section) | |
194 | reloc_entry->addend += symbol_in->section->output_offset; | |
195 | ||
196 | return bfd_reloc_ok; | |
197 | } | |
198 | ||
199 | return bfd_reloc_continue; | |
200 | } | |
201 | ||
202 | ||
203 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
204 | TYPE = VALUE, | |
68d20676 | 205 | |
886a2506 NC |
206 | enum howto_list |
207 | { | |
208 | #include "elf/arc-reloc.def" | |
209 | HOWTO_LIST_LAST | |
210 | }; | |
68d20676 | 211 | |
886a2506 NC |
212 | #undef ARC_RELOC_HOWTO |
213 | ||
214 | #define ARC_RELOC_HOWTO(TYPE, VALUE, RSIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
f7e8b360 NC |
215 | [TYPE] = HOWTO (R_##TYPE, 0, RSIZE, BITSIZE, FALSE, 0, \ |
216 | complain_overflow_##OVERFLOW, arc_elf_reloc, \ | |
217 | "R_" #TYPE, FALSE, 0, 0, FALSE), | |
886a2506 NC |
218 | |
219 | static struct reloc_howto_struct elf_arc_howto_table[] = | |
220 | { | |
221 | #include "elf/arc-reloc.def" | |
34e967a5 MC |
222 | /* Example of what is generated by the preprocessor. Currently kept as an |
223 | example. | |
886a2506 NC |
224 | HOWTO (R_ARC_NONE, // Type. |
225 | 0, // Rightshift. | |
226 | 2, // Size (0 = byte, 1 = short, 2 = long). | |
227 | 32, // Bitsize. | |
228 | FALSE, // PC_relative. | |
229 | 0, // Bitpos. | |
230 | complain_overflow_bitfield, // Complain_on_overflow. | |
231 | bfd_elf_generic_reloc, // Special_function. | |
232 | "R_ARC_NONE", // Name. | |
233 | TRUE, // Partial_inplace. | |
234 | 0, // Src_mask. | |
235 | 0, // Dst_mask. | |
236 | FALSE), // PCrel_offset. | |
237 | */ | |
238 | }; | |
239 | #undef ARC_RELOC_HOWTO | |
240 | ||
68d20676 NC |
241 | static void |
242 | arc_elf_howto_init (void) | |
886a2506 NC |
243 | { |
244 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
68d20676 | 245 | elf_arc_howto_table[TYPE].pc_relative = \ |
0a5ff21b | 246 | (strstr (#FORMULA, " P ") != NULL || strstr (#FORMULA, " PDATA ") != NULL); \ |
68d20676 NC |
247 | elf_arc_howto_table[TYPE].dst_mask = RELOC_FUNCTION(0, ~0); \ |
248 | /* Only 32 bit data relocations should be marked as ME. */ \ | |
249 | if (strstr (#FORMULA, " ME ") != NULL) \ | |
250 | { \ | |
251 | BFD_ASSERT (SIZE == 2); \ | |
72f3b6aa | 252 | } |
886a2506 | 253 | |
34e967a5 | 254 | #include "elf/arc-reloc.def" |
72f3b6aa | 255 | |
47b0e7ad | 256 | } |
886a2506 | 257 | #undef ARC_RELOC_HOWTO |
47b0e7ad | 258 | |
886a2506 NC |
259 | |
260 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
261 | [TYPE] = VALUE, | |
68d20676 | 262 | |
886a2506 NC |
263 | const int howto_table_lookup[] = |
264 | { | |
34e967a5 | 265 | #include "elf/arc-reloc.def" |
252b5132 | 266 | }; |
68d20676 | 267 | |
886a2506 NC |
268 | #undef ARC_RELOC_HOWTO |
269 | ||
f26dd308 AM |
270 | static reloc_howto_type * |
271 | arc_elf_howto (unsigned int r_type) | |
272 | { | |
273 | if (elf_arc_howto_table[R_ARC_32].dst_mask == 0) | |
274 | arc_elf_howto_init (); | |
275 | return &elf_arc_howto_table[r_type]; | |
276 | } | |
252b5132 RH |
277 | |
278 | /* Map BFD reloc types to ARC ELF reloc types. */ | |
279 | ||
280 | struct arc_reloc_map | |
281 | { | |
34e967a5 | 282 | bfd_reloc_code_real_type bfd_reloc_val; |
08759e0f | 283 | unsigned char elf_reloc_val; |
252b5132 RH |
284 | }; |
285 | ||
8a36df4d CM |
286 | /* ARC ELF linker hash table. */ |
287 | struct elf_arc_link_hash_table | |
288 | { | |
289 | struct elf_link_hash_table elf; | |
8a36df4d CM |
290 | }; |
291 | ||
292 | static struct bfd_hash_entry * | |
293 | elf_arc_link_hash_newfunc (struct bfd_hash_entry *entry, | |
294 | struct bfd_hash_table *table, | |
295 | const char *string) | |
296 | { | |
854b8506 CM |
297 | struct elf_arc_link_hash_entry * ret = |
298 | (struct elf_arc_link_hash_entry *) entry; | |
299 | ||
8a36df4d CM |
300 | /* Allocate the structure if it has not already been allocated by a |
301 | subclass. */ | |
854b8506 CM |
302 | if (ret == NULL) |
303 | ret = (struct elf_arc_link_hash_entry *) | |
304 | bfd_hash_allocate (table, sizeof (struct elf_arc_link_hash_entry)); | |
305 | if (ret == NULL) | |
306 | return (struct bfd_hash_entry *) ret; | |
8a36df4d CM |
307 | |
308 | /* Call the allocation method of the superclass. */ | |
854b8506 CM |
309 | ret = ((struct elf_arc_link_hash_entry *) |
310 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
311 | table, string)); | |
312 | if (ret != NULL) | |
8a36df4d | 313 | { |
854b8506 CM |
314 | ret->dyn_relocs = NULL; |
315 | ret->got_ents = NULL; | |
8a36df4d CM |
316 | } |
317 | ||
854b8506 | 318 | return (struct bfd_hash_entry *) ret; |
8a36df4d CM |
319 | } |
320 | ||
321 | /* Destroy an ARC ELF linker hash table. */ | |
322 | static void | |
323 | elf_arc_link_hash_table_free (bfd *obfd) | |
324 | { | |
325 | _bfd_elf_link_hash_table_free (obfd); | |
326 | } | |
327 | ||
328 | /* Create an ARC ELF linker hash table. */ | |
329 | ||
330 | static struct bfd_link_hash_table * | |
331 | arc_elf_link_hash_table_create (bfd *abfd) | |
332 | { | |
333 | struct elf_arc_link_hash_table *ret; | |
334 | ||
335 | ret = (struct elf_arc_link_hash_table *) bfd_zmalloc (sizeof (*ret)); | |
336 | if (ret == NULL) | |
337 | return NULL; | |
338 | ||
339 | if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, | |
340 | elf_arc_link_hash_newfunc, | |
341 | sizeof (struct elf_arc_link_hash_entry), | |
342 | ARC_ELF_DATA)) | |
343 | { | |
344 | free (ret); | |
345 | return NULL; | |
346 | } | |
347 | ||
8a36df4d CM |
348 | ret->elf.root.hash_table_free = elf_arc_link_hash_table_free; |
349 | ||
350 | return &ret->elf.root; | |
351 | } | |
352 | ||
886a2506 NC |
353 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
354 | { BFD_RELOC_##TYPE, R_##TYPE }, | |
68d20676 | 355 | |
252b5132 RH |
356 | static const struct arc_reloc_map arc_reloc_map[] = |
357 | { | |
34e967a5 MC |
358 | #include "elf/arc-reloc.def" |
359 | ||
886a2506 NC |
360 | {BFD_RELOC_NONE, R_ARC_NONE}, |
361 | {BFD_RELOC_8, R_ARC_8}, | |
362 | {BFD_RELOC_16, R_ARC_16}, | |
363 | {BFD_RELOC_24, R_ARC_24}, | |
364 | {BFD_RELOC_32, R_ARC_32}, | |
252b5132 | 365 | }; |
68d20676 | 366 | |
886a2506 | 367 | #undef ARC_RELOC_HOWTO |
252b5132 | 368 | |
094fb063 CZ |
369 | typedef ATTRIBUTE_UNUSED bfd_vma (*replace_func) (unsigned, int ATTRIBUTE_UNUSED); |
370 | ||
371 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ | |
372 | case TYPE: \ | |
373 | func = (void *) RELOC_FUNCTION; \ | |
374 | break; | |
68d20676 | 375 | |
094fb063 CZ |
376 | static replace_func |
377 | get_replace_function (bfd *abfd, unsigned int r_type) | |
378 | { | |
379 | void *func = NULL; | |
380 | ||
381 | switch (r_type) | |
382 | { | |
383 | #include "elf/arc-reloc.def" | |
384 | } | |
385 | ||
386 | if (func == replace_bits24 && bfd_big_endian (abfd)) | |
68d20676 | 387 | func = replace_bits24_be; |
094fb063 CZ |
388 | |
389 | return (replace_func) func; | |
390 | } | |
391 | #undef ARC_RELOC_HOWTO | |
392 | ||
252b5132 | 393 | static reloc_howto_type * |
34e967a5 | 394 | arc_elf32_bfd_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
47b0e7ad | 395 | bfd_reloc_code_real_type code) |
252b5132 RH |
396 | { |
397 | unsigned int i; | |
398 | ||
ea04a8f6 | 399 | for (i = ARRAY_SIZE (arc_reloc_map); i--;) |
886a2506 NC |
400 | { |
401 | if (arc_reloc_map[i].bfd_reloc_val == code) | |
f26dd308 | 402 | return arc_elf_howto (arc_reloc_map[i].elf_reloc_val); |
886a2506 | 403 | } |
ea04a8f6 | 404 | |
252b5132 RH |
405 | return NULL; |
406 | } | |
407 | ||
34e967a5 MC |
408 | /* Function to set the ELF flag bits. */ |
409 | static bfd_boolean | |
410 | arc_elf_set_private_flags (bfd *abfd, flagword flags) | |
411 | { | |
412 | elf_elfheader (abfd)->e_flags = flags; | |
413 | elf_flags_init (abfd) = TRUE; | |
414 | return TRUE; | |
415 | } | |
416 | ||
417 | /* Print private flags. */ | |
418 | static bfd_boolean | |
419 | arc_elf_print_private_bfd_data (bfd *abfd, void * ptr) | |
420 | { | |
421 | FILE *file = (FILE *) ptr; | |
422 | flagword flags; | |
423 | ||
424 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
425 | ||
426 | /* Print normal ELF private data. */ | |
427 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
428 | ||
429 | flags = elf_elfheader (abfd)->e_flags; | |
430 | fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags); | |
431 | ||
432 | switch (flags & EF_ARC_MACH_MSK) | |
433 | { | |
34e967a5 MC |
434 | case EF_ARC_CPU_ARCV2HS : fprintf (file, " -mcpu=ARCv2HS"); break; |
435 | case EF_ARC_CPU_ARCV2EM : fprintf (file, " -mcpu=ARCv2EM"); break; | |
436 | case E_ARC_MACH_ARC600 : fprintf (file, " -mcpu=ARC600"); break; | |
437 | case E_ARC_MACH_ARC601 : fprintf (file, " -mcpu=ARC601"); break; | |
438 | case E_ARC_MACH_ARC700 : fprintf (file, " -mcpu=ARC700"); break; | |
439 | default: | |
440 | fprintf (file, "-mcpu=unknown"); | |
441 | break; | |
442 | } | |
443 | ||
444 | switch (flags & EF_ARC_OSABI_MSK) | |
445 | { | |
446 | case E_ARC_OSABI_ORIG : fprintf (file, " (ABI:legacy)"); break; | |
447 | case E_ARC_OSABI_V2 : fprintf (file, " (ABI:v2)"); break; | |
448 | case E_ARC_OSABI_V3 : fprintf (file, " (ABI:v3)"); break; | |
53a346d8 | 449 | case E_ARC_OSABI_V4 : fprintf (file, " (ABI:v4)"); break; |
34e967a5 | 450 | default: |
53a346d8 | 451 | fprintf (file, " (ABI:unknown)"); |
34e967a5 MC |
452 | break; |
453 | } | |
454 | ||
455 | fputc ('\n', file); | |
456 | return TRUE; | |
457 | } | |
458 | ||
459 | /* Copy backend specific data from one object module to another. */ | |
460 | ||
461 | static bfd_boolean | |
462 | arc_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
463 | { | |
464 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
465 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
466 | return TRUE; | |
467 | ||
468 | BFD_ASSERT (!elf_flags_init (obfd) | |
469 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
470 | ||
471 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
472 | elf_flags_init (obfd) = TRUE; | |
473 | ||
474 | /* Copy object attributes. */ | |
475 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
476 | ||
477 | return _bfd_elf_copy_private_bfd_data (ibfd, obfd); | |
478 | } | |
479 | ||
157090f7 | 480 | static reloc_howto_type * |
34e967a5 MC |
481 | bfd_elf32_bfd_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
482 | const char *r_name) | |
157090f7 AM |
483 | { |
484 | unsigned int i; | |
485 | ||
886a2506 | 486 | for (i = 0; i < ARRAY_SIZE (elf_arc_howto_table); i++) |
157090f7 AM |
487 | if (elf_arc_howto_table[i].name != NULL |
488 | && strcasecmp (elf_arc_howto_table[i].name, r_name) == 0) | |
f26dd308 | 489 | return arc_elf_howto (i); |
157090f7 AM |
490 | |
491 | return NULL; | |
492 | } | |
493 | ||
886a2506 | 494 | /* Set the howto pointer for an ARC ELF reloc. */ |
34e967a5 | 495 | |
f3185997 NC |
496 | static bfd_boolean |
497 | arc_info_to_howto_rel (bfd * abfd, | |
886a2506 NC |
498 | arelent * cache_ptr, |
499 | Elf_Internal_Rela * dst) | |
252b5132 RH |
500 | { |
501 | unsigned int r_type; | |
502 | ||
503 | r_type = ELF32_R_TYPE (dst->r_info); | |
f3185997 NC |
504 | if (r_type >= (unsigned int) R_ARC_max) |
505 | { | |
506 | /* xgettext:c-format */ | |
507 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), | |
508 | abfd, r_type); | |
509 | bfd_set_error (bfd_error_bad_value); | |
510 | return FALSE; | |
511 | } | |
512 | ||
f26dd308 | 513 | cache_ptr->howto = arc_elf_howto (r_type); |
f3185997 | 514 | return TRUE; |
252b5132 RH |
515 | } |
516 | ||
53a346d8 CZ |
517 | /* Extract CPU features from an NTBS. */ |
518 | ||
519 | static unsigned | |
520 | arc_extract_features (const char *p) | |
521 | { | |
522 | unsigned i, r = 0; | |
523 | ||
524 | if (!p) | |
525 | return 0; | |
526 | ||
527 | for (i = 0; i < ARRAY_SIZE (bfd_feature_list); i++) | |
528 | { | |
529 | char *t = strstr (p, bfd_feature_list[i].attr); | |
530 | unsigned l = strlen (bfd_feature_list[i].attr); | |
531 | if ((t != NULL) | |
532 | && (t[l] == ',' | |
533 | || t[l] == '\0')) | |
534 | r |= bfd_feature_list[i].feature; | |
535 | } | |
536 | ||
537 | return r; | |
538 | } | |
539 | ||
540 | /* Concatenate two strings. s1 can be NULL but not | |
541 | s2. */ | |
542 | ||
543 | static char * | |
544 | arc_stralloc (char * s1, const char * s2) | |
545 | { | |
546 | char *p; | |
547 | ||
548 | /* Only s1 can be null. */ | |
549 | BFD_ASSERT (s2); | |
550 | ||
551 | p = s1 ? concat (s1, ",", s2, NULL) : (char *)s2; | |
552 | ||
553 | return p; | |
554 | } | |
555 | ||
556 | /* Merge ARC object attributes from IBFD into OBFD. Raise an error if | |
557 | there are conflicting attributes. */ | |
558 | ||
559 | static bfd_boolean | |
560 | arc_elf_merge_attributes (bfd *ibfd, struct bfd_link_info *info) | |
561 | { | |
562 | bfd *obfd = info->output_bfd; | |
563 | obj_attribute *in_attr; | |
564 | obj_attribute *out_attr; | |
565 | int i; | |
566 | bfd_boolean result = TRUE; | |
567 | const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section; | |
568 | char *tagname = NULL; | |
569 | ||
570 | /* Skip the linker stubs file. This preserves previous behavior | |
571 | of accepting unknown attributes in the first input file - but | |
572 | is that a bug? */ | |
573 | if (ibfd->flags & BFD_LINKER_CREATED) | |
574 | return TRUE; | |
575 | ||
576 | /* Skip any input that hasn't attribute section. | |
577 | This enables to link object files without attribute section with | |
578 | any others. */ | |
579 | if (bfd_get_section_by_name (ibfd, sec_name) == NULL) | |
580 | return TRUE; | |
581 | ||
582 | if (!elf_known_obj_attributes_proc (obfd)[0].i) | |
583 | { | |
584 | /* This is the first object. Copy the attributes. */ | |
585 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
586 | ||
587 | out_attr = elf_known_obj_attributes_proc (obfd); | |
588 | ||
589 | /* Use the Tag_null value to indicate the attributes have been | |
590 | initialized. */ | |
591 | out_attr[0].i = 1; | |
592 | ||
593 | return TRUE; | |
594 | } | |
595 | ||
596 | in_attr = elf_known_obj_attributes_proc (ibfd); | |
597 | out_attr = elf_known_obj_attributes_proc (obfd); | |
598 | ||
599 | for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++) | |
600 | { | |
601 | /* Merge this attribute with existing attributes. */ | |
602 | switch (i) | |
603 | { | |
604 | case Tag_ARC_PCS_config: | |
605 | if (out_attr[i].i == 0) | |
606 | out_attr[i].i = in_attr[i].i; | |
607 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i) | |
608 | { | |
609 | const char *tagval[] = { "Absent", "Bare-metal/mwdt", | |
610 | "Bare-metal/newlib", "Linux/uclibc", | |
611 | "Linux/glibc" }; | |
612 | BFD_ASSERT (in_attr[i].i < 5); | |
613 | BFD_ASSERT (out_attr[i].i < 5); | |
614 | /* It's sometimes ok to mix different configs, so this is only | |
615 | a warning. */ | |
616 | _bfd_error_handler | |
38f14ab8 AM |
617 | (_("warning: %pB: conflicting platform configuration " |
618 | "%s with %s"), ibfd, | |
53a346d8 CZ |
619 | tagval[in_attr[i].i], |
620 | tagval[out_attr[i].i]); | |
621 | } | |
622 | break; | |
623 | ||
624 | case Tag_ARC_CPU_base: | |
625 | if (out_attr[i].i == 0) | |
626 | out_attr[i].i = in_attr[i].i; | |
627 | else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i | |
628 | && ((out_attr[i].i + in_attr[i].i) < 6)) | |
629 | { | |
630 | const char *tagval[] = { "Absent", "ARC6xx", "ARC7xx", | |
631 | "ARCEM", "ARCHS" }; | |
632 | BFD_ASSERT (in_attr[i].i < 5); | |
633 | BFD_ASSERT (out_attr[i].i < 5); | |
634 | /* We cannot mix code for different CPUs. */ | |
635 | _bfd_error_handler | |
871b3ab2 | 636 | (_("error: %pB: unable to merge CPU base attributes " |
38f14ab8 | 637 | "%s with %s"), |
53a346d8 CZ |
638 | obfd, |
639 | tagval[in_attr[i].i], | |
640 | tagval[out_attr[i].i]); | |
641 | result = FALSE; | |
642 | break; | |
643 | } | |
644 | else | |
645 | { | |
646 | /* The CPUs may be different, check if we can still mix | |
647 | the objects against the output choosen CPU. */ | |
648 | unsigned in_feature = 0; | |
649 | unsigned out_feature = 0; | |
650 | char *p1 = in_attr[Tag_ARC_ISA_config].s; | |
651 | char *p2 = out_attr[Tag_ARC_ISA_config].s; | |
652 | unsigned j; | |
653 | unsigned cpu_out; | |
654 | unsigned opcode_map[] = {0, ARC_OPCODE_ARC600, ARC_OPCODE_ARC700, | |
655 | ARC_OPCODE_ARCv2EM, ARC_OPCODE_ARCv2HS}; | |
656 | ||
657 | BFD_ASSERT (in_attr[i].i < (sizeof (opcode_map) | |
658 | / sizeof (unsigned))); | |
659 | BFD_ASSERT (out_attr[i].i < (sizeof (opcode_map) | |
660 | / sizeof (unsigned))); | |
661 | cpu_out = opcode_map[out_attr[i].i]; | |
662 | ||
663 | in_feature = arc_extract_features (p1); | |
664 | out_feature = arc_extract_features (p2); | |
665 | ||
666 | /* First, check if a feature is compatible with the | |
667 | output object chosen CPU. */ | |
668 | for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++) | |
669 | if (((in_feature | out_feature) & bfd_feature_list[j].feature) | |
670 | && (!(cpu_out & bfd_feature_list[j].cpus))) | |
671 | { | |
672 | _bfd_error_handler | |
871b3ab2 | 673 | (_("error: %pB: unable to merge ISA extension attributes " |
38f14ab8 | 674 | "%s"), |
53a346d8 CZ |
675 | obfd, bfd_feature_list[j].name); |
676 | result = FALSE; | |
677 | break; | |
678 | } | |
679 | /* Second, if we have compatible features with the | |
680 | chosen CPU, check if they are compatible among | |
681 | them. */ | |
682 | for (j = 0; j < ARRAY_SIZE (bfd_conflict_list); j++) | |
683 | if (((in_feature | out_feature) & bfd_conflict_list[j]) | |
684 | == bfd_conflict_list[j]) | |
685 | { | |
686 | unsigned k; | |
687 | for (k = 0; k < ARRAY_SIZE (bfd_feature_list); k++) | |
688 | { | |
689 | if (in_feature & bfd_feature_list[k].feature | |
690 | & bfd_conflict_list[j]) | |
691 | p1 = (char *) bfd_feature_list[k].name; | |
692 | if (out_feature & bfd_feature_list[k].feature | |
693 | & bfd_conflict_list[j]) | |
694 | p2 = (char *) bfd_feature_list[k].name; | |
695 | } | |
696 | _bfd_error_handler | |
871b3ab2 | 697 | (_("error: %pB: conflicting ISA extension attributes " |
38f14ab8 | 698 | "%s with %s"), |
53a346d8 CZ |
699 | obfd, p1, p2); |
700 | result = FALSE; | |
701 | break; | |
702 | } | |
703 | /* Everithing is alright. */ | |
704 | out_feature |= in_feature; | |
705 | p1 = NULL; | |
706 | for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++) | |
707 | if (out_feature & bfd_feature_list[j].feature) | |
708 | p1 = arc_stralloc (p1, bfd_feature_list[j].attr); | |
709 | if (p1) | |
710 | out_attr[Tag_ARC_ISA_config].s = | |
711 | _bfd_elf_attr_strdup (obfd, p1); | |
712 | } | |
713 | /* Fall through. */ | |
714 | case Tag_ARC_CPU_variation: | |
715 | case Tag_ARC_ISA_mpy_option: | |
716 | case Tag_ARC_ABI_osver: | |
717 | /* Use the largest value specified. */ | |
718 | if (in_attr[i].i > out_attr[i].i) | |
719 | out_attr[i].i = in_attr[i].i; | |
720 | break; | |
721 | ||
2fd43d78 | 722 | /* The CPU name is given by the vendor, just choose an |
723 | existing one if missing or different. There are no fail | |
724 | criteria if they different or both missing. */ | |
53a346d8 | 725 | case Tag_ARC_CPU_name: |
2fd43d78 | 726 | if (!out_attr[i].s && in_attr[i].s) |
727 | out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s); | |
53a346d8 CZ |
728 | break; |
729 | ||
730 | case Tag_ARC_ABI_rf16: | |
731 | if (out_attr[i].i == 0) | |
732 | out_attr[i].i = in_attr[i].i; | |
733 | else if (out_attr[i].i != in_attr[i].i) | |
734 | { | |
735 | /* We cannot mix code with rf16 and without. */ | |
736 | _bfd_error_handler | |
38f14ab8 | 737 | (_("error: %pB: cannot mix rf16 with full register set %pB"), |
53a346d8 CZ |
738 | obfd, ibfd); |
739 | result = FALSE; | |
740 | } | |
741 | break; | |
742 | ||
743 | case Tag_ARC_ABI_pic: | |
744 | tagname = "PIC"; | |
8e7f04f1 | 745 | /* fall through */ |
53a346d8 CZ |
746 | case Tag_ARC_ABI_sda: |
747 | if (!tagname) | |
748 | tagname = "SDA"; | |
8e7f04f1 | 749 | /* fall through */ |
53a346d8 CZ |
750 | case Tag_ARC_ABI_tls: |
751 | { | |
752 | const char *tagval[] = { "Absent", "MWDT", "GNU" }; | |
753 | ||
754 | if (!tagname) | |
755 | tagname = "TLS"; | |
756 | ||
757 | BFD_ASSERT (in_attr[i].i < 3); | |
758 | BFD_ASSERT (out_attr[i].i < 3); | |
2fd43d78 | 759 | if (out_attr[i].i == 0) |
760 | out_attr[i].i = in_attr[i].i; | |
761 | else if (out_attr[i].i != 0 && in_attr[i].i != 0 | |
53a346d8 CZ |
762 | && out_attr[i].i != in_attr[i].i) |
763 | { | |
764 | _bfd_error_handler | |
38f14ab8 | 765 | (_("error: %pB: conflicting attributes %s: %s with %s"), |
53a346d8 CZ |
766 | obfd, tagname, |
767 | tagval[in_attr[i].i], | |
768 | tagval[out_attr[i].i]); | |
769 | result = FALSE; | |
770 | } | |
771 | tagname = NULL; | |
772 | break; | |
773 | } | |
774 | ||
775 | case Tag_ARC_ABI_double_size: | |
776 | tagname = "Double size"; | |
8e7f04f1 | 777 | /* fall through */ |
53a346d8 CZ |
778 | case Tag_ARC_ABI_enumsize: |
779 | if (!tagname) | |
780 | tagname = "Enum size"; | |
8e7f04f1 | 781 | /* fall through */ |
53a346d8 CZ |
782 | case Tag_ARC_ABI_exceptions: |
783 | if (!tagname) | |
784 | tagname = "ABI exceptions"; | |
785 | ||
2fd43d78 | 786 | if (out_attr[i].i == 0) |
787 | out_attr[i].i = in_attr[i].i; | |
788 | else if (out_attr[i].i != 0 && in_attr[i].i != 0 | |
53a346d8 CZ |
789 | && out_attr[i].i != in_attr[i].i) |
790 | { | |
791 | _bfd_error_handler | |
38f14ab8 | 792 | (_("error: %pB: conflicting attributes %s"), |
53a346d8 CZ |
793 | obfd, tagname); |
794 | result = FALSE; | |
795 | } | |
796 | break; | |
797 | ||
798 | case Tag_ARC_ISA_apex: | |
799 | break; /* Do nothing for APEX attributes. */ | |
800 | ||
801 | case Tag_ARC_ISA_config: | |
802 | /* It is handled in Tag_ARC_CPU_base. */ | |
803 | break; | |
804 | ||
db1e1b45 | 805 | case Tag_ARC_ATR_version: |
806 | if (out_attr[i].i == 0) | |
807 | out_attr[i].i = in_attr[i].i; | |
808 | break; | |
809 | ||
53a346d8 CZ |
810 | default: |
811 | result | |
812 | = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i); | |
813 | } | |
814 | ||
815 | /* If out_attr was copied from in_attr then it won't have a type yet. */ | |
816 | if (in_attr[i].type && !out_attr[i].type) | |
817 | out_attr[i].type = in_attr[i].type; | |
818 | } | |
819 | ||
820 | /* Merge Tag_compatibility attributes and any common GNU ones. */ | |
821 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) | |
822 | return FALSE; | |
823 | ||
824 | /* Check for any attributes not known on ARC. */ | |
825 | result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd); | |
826 | ||
827 | return result; | |
828 | } | |
829 | ||
34e967a5 MC |
830 | /* Merge backend specific data from an object file to the output |
831 | object file when linking. */ | |
832 | ||
833 | static bfd_boolean | |
50e03d47 | 834 | arc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) |
34e967a5 | 835 | { |
50e03d47 | 836 | bfd *obfd = info->output_bfd; |
34e967a5 MC |
837 | unsigned short mach_ibfd; |
838 | static unsigned short mach_obfd = EM_NONE; | |
839 | flagword out_flags; | |
840 | flagword in_flags; | |
841 | asection *sec; | |
842 | ||
843 | /* Check if we have the same endianess. */ | |
50e03d47 | 844 | if (! _bfd_generic_verify_endian_match (ibfd, info)) |
1047201f | 845 | return FALSE; |
34e967a5 | 846 | |
53a346d8 CZ |
847 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
848 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
849 | return TRUE; | |
850 | ||
34e967a5 MC |
851 | /* Collect ELF flags. */ |
852 | in_flags = elf_elfheader (ibfd)->e_flags & EF_ARC_MACH_MSK; | |
853 | out_flags = elf_elfheader (obfd)->e_flags & EF_ARC_MACH_MSK; | |
854 | ||
855 | if (!elf_flags_init (obfd)) /* First call, no flags set. */ | |
856 | { | |
857 | elf_flags_init (obfd) = TRUE; | |
858 | out_flags = in_flags; | |
859 | } | |
860 | ||
53a346d8 CZ |
861 | if (!arc_elf_merge_attributes (ibfd, info)) |
862 | return FALSE; | |
34e967a5 MC |
863 | |
864 | /* Check to see if the input BFD actually contains any sections. Do | |
865 | not short-circuit dynamic objects; their section list may be | |
866 | emptied by elf_link_add_object_symbols. */ | |
867 | if (!(ibfd->flags & DYNAMIC)) | |
868 | { | |
869 | bfd_boolean null_input_bfd = TRUE; | |
870 | bfd_boolean only_data_sections = TRUE; | |
871 | ||
872 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
873 | { | |
874 | if ((bfd_get_section_flags (ibfd, sec) | |
875 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
876 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
877 | only_data_sections = FALSE; | |
878 | ||
879 | null_input_bfd = FALSE; | |
880 | } | |
881 | ||
882 | if (null_input_bfd || only_data_sections) | |
883 | return TRUE; | |
884 | } | |
885 | ||
886 | /* Complain about various flag/architecture mismatches. */ | |
887 | mach_ibfd = elf_elfheader (ibfd)->e_machine; | |
888 | if (mach_obfd == EM_NONE) | |
889 | { | |
890 | mach_obfd = mach_ibfd; | |
891 | } | |
892 | else | |
893 | { | |
894 | if (mach_ibfd != mach_obfd) | |
895 | { | |
695344c0 | 896 | /* xgettext:c-format */ |
38f14ab8 | 897 | _bfd_error_handler (_("error: attempting to link %pB " |
871b3ab2 | 898 | "with a binary %pB of different architecture"), |
dae82561 | 899 | ibfd, obfd); |
34e967a5 MC |
900 | return FALSE; |
901 | } | |
53a346d8 CZ |
902 | else if ((in_flags != out_flags) |
903 | /* If we have object attributes, then we already | |
904 | checked the objects compatibility, skip it. */ | |
905 | && !bfd_elf_get_obj_attr_int (ibfd, OBJ_ATTR_PROC, | |
906 | Tag_ARC_CPU_base)) | |
34e967a5 | 907 | { |
34e967a5 | 908 | if (in_flags && out_flags) |
6af04484 CZ |
909 | { |
910 | /* Warn if different flags. */ | |
911 | _bfd_error_handler | |
912 | /* xgettext:c-format */ | |
913 | (_("%pB: uses different e_flags (%#x) fields than " | |
914 | "previous modules (%#x)"), | |
915 | ibfd, in_flags, out_flags); | |
916 | return FALSE; | |
917 | } | |
34e967a5 MC |
918 | /* MWDT doesnt set the eflags hence make sure we choose the |
919 | eflags set by gcc. */ | |
920 | in_flags = in_flags > out_flags ? in_flags : out_flags; | |
921 | } | |
53a346d8 CZ |
922 | else |
923 | { | |
924 | /* Everything is correct; don't change the output flags. */ | |
925 | in_flags = out_flags; | |
926 | } | |
34e967a5 MC |
927 | } |
928 | ||
929 | /* Update the flags. */ | |
930 | elf_elfheader (obfd)->e_flags = in_flags; | |
931 | ||
932 | if (bfd_get_mach (obfd) < bfd_get_mach (ibfd)) | |
933 | { | |
934 | return bfd_set_arch_mach (obfd, bfd_arch_arc, bfd_get_mach (ibfd)); | |
935 | } | |
936 | ||
937 | return TRUE; | |
938 | } | |
939 | ||
53a346d8 CZ |
940 | /* Return a best guess for the machine number based on the attributes. */ |
941 | ||
942 | static unsigned int | |
943 | bfd_arc_get_mach_from_attributes (bfd * abfd) | |
944 | { | |
945 | int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ARC_CPU_base); | |
946 | unsigned e_machine = elf_elfheader (abfd)->e_machine; | |
947 | ||
948 | switch (arch) | |
949 | { | |
950 | case TAG_CPU_ARC6xx: | |
951 | return bfd_mach_arc_arc600; | |
952 | case TAG_CPU_ARC7xx: | |
953 | return bfd_mach_arc_arc700; | |
954 | case TAG_CPU_ARCEM: | |
955 | case TAG_CPU_ARCHS: | |
956 | return bfd_mach_arc_arcv2; | |
957 | default: | |
958 | break; | |
959 | } | |
960 | return (e_machine == EM_ARC_COMPACT) | |
961 | ? bfd_mach_arc_arc700 : bfd_mach_arc_arcv2; | |
962 | } | |
963 | ||
252b5132 | 964 | /* Set the right machine number for an ARC ELF file. */ |
b34976b6 | 965 | static bfd_boolean |
886a2506 | 966 | arc_elf_object_p (bfd * abfd) |
252b5132 | 967 | { |
886a2506 NC |
968 | /* Make sure this is initialised, or you'll have the potential of passing |
969 | garbage---or misleading values---into the call to | |
970 | bfd_default_set_arch_mach (). */ | |
53a346d8 | 971 | unsigned int mach = bfd_mach_arc_arc700; |
886a2506 NC |
972 | unsigned long arch = elf_elfheader (abfd)->e_flags & EF_ARC_MACH_MSK; |
973 | unsigned e_machine = elf_elfheader (abfd)->e_machine; | |
252b5132 | 974 | |
886a2506 | 975 | if (e_machine == EM_ARC_COMPACT || e_machine == EM_ARC_COMPACT2) |
252b5132 | 976 | { |
0d2bcfaf NC |
977 | switch (arch) |
978 | { | |
886a2506 NC |
979 | case E_ARC_MACH_ARC600: |
980 | mach = bfd_mach_arc_arc600; | |
981 | break; | |
982 | case E_ARC_MACH_ARC601: | |
983 | mach = bfd_mach_arc_arc601; | |
984 | break; | |
985 | case E_ARC_MACH_ARC700: | |
986 | mach = bfd_mach_arc_arc700; | |
987 | break; | |
988 | case EF_ARC_CPU_ARCV2HS: | |
989 | case EF_ARC_CPU_ARCV2EM: | |
990 | mach = bfd_mach_arc_arcv2; | |
991 | break; | |
992 | default: | |
53a346d8 | 993 | mach = bfd_arc_get_mach_from_attributes (abfd); |
886a2506 NC |
994 | break; |
995 | } | |
996 | } | |
997 | else | |
998 | { | |
999 | if (e_machine == EM_ARC) | |
1000 | { | |
4eca0228 | 1001 | _bfd_error_handler |
38f14ab8 | 1002 | (_("error: the ARC4 architecture is no longer supported")); |
886a2506 NC |
1003 | return FALSE; |
1004 | } | |
1005 | else | |
1006 | { | |
4eca0228 | 1007 | _bfd_error_handler |
38f14ab8 AM |
1008 | (_("warning: unset or old architecture flags; " |
1009 | "use default machine")); | |
0d2bcfaf | 1010 | } |
252b5132 | 1011 | } |
886a2506 | 1012 | |
0d2bcfaf | 1013 | return bfd_default_set_arch_mach (abfd, bfd_arch_arc, mach); |
252b5132 RH |
1014 | } |
1015 | ||
1016 | /* The final processing done just before writing out an ARC ELF object file. | |
1017 | This gets the ARC architecture right based on the machine number. */ | |
1018 | ||
1019 | static void | |
34e967a5 MC |
1020 | arc_elf_final_write_processing (bfd * abfd, |
1021 | bfd_boolean linker ATTRIBUTE_UNUSED) | |
252b5132 | 1022 | { |
886a2506 | 1023 | unsigned long emf; |
53a346d8 CZ |
1024 | int osver = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, |
1025 | Tag_ARC_ABI_osver); | |
1026 | flagword e_flags = elf_elfheader (abfd)->e_flags & ~EF_ARC_OSABI_MSK; | |
252b5132 | 1027 | |
0d2bcfaf | 1028 | switch (bfd_get_mach (abfd)) |
252b5132 | 1029 | { |
886a2506 | 1030 | case bfd_mach_arc_arc600: |
886a2506 | 1031 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1032 | break; |
886a2506 | 1033 | case bfd_mach_arc_arc601: |
886a2506 | 1034 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1035 | break; |
886a2506 | 1036 | case bfd_mach_arc_arc700: |
886a2506 | 1037 | emf = EM_ARC_COMPACT; |
0d2bcfaf | 1038 | break; |
886a2506 | 1039 | case bfd_mach_arc_arcv2: |
886a2506 | 1040 | emf = EM_ARC_COMPACT2; |
0d2bcfaf | 1041 | break; |
886a2506 | 1042 | default: |
53a346d8 | 1043 | return; |
252b5132 | 1044 | } |
34e967a5 | 1045 | |
886a2506 | 1046 | elf_elfheader (abfd)->e_machine = emf; |
7e458899 | 1047 | |
886a2506 | 1048 | /* Record whatever is the current syscall ABI version. */ |
53a346d8 CZ |
1049 | if (osver) |
1050 | e_flags |= ((osver & 0x0f) << 8); | |
1051 | else | |
1052 | e_flags |= E_ARC_OSABI_V3; | |
3c8adaca | 1053 | |
53a346d8 | 1054 | elf_elfheader (abfd)->e_flags |= e_flags; |
252b5132 RH |
1055 | } |
1056 | ||
f7e8b360 NC |
1057 | #ifdef ARC_ENABLE_DEBUG |
1058 | #define DEBUG_ARC_RELOC(A) debug_arc_reloc (A) | |
886a2506 NC |
1059 | |
1060 | static void | |
1061 | debug_arc_reloc (struct arc_relocation_data reloc_data) | |
1062 | { | |
f7e8b360 NC |
1063 | ARC_DEBUG ("Reloc type=%s, should_relocate = %s\n", |
1064 | reloc_data.howto->name, | |
1065 | reloc_data.should_relocate ? "true" : "false"); | |
1066 | ARC_DEBUG (" offset = 0x%x, addend = 0x%x\n", | |
1067 | (unsigned int) reloc_data.reloc_offset, | |
1068 | (unsigned int) reloc_data.reloc_addend); | |
1069 | ARC_DEBUG (" Symbol:\n"); | |
1070 | ARC_DEBUG (" value = 0x%08x\n", | |
1071 | (unsigned int) reloc_data.sym_value); | |
886a2506 NC |
1072 | if (reloc_data.sym_section != NULL) |
1073 | { | |
f7e8b360 NC |
1074 | ARC_DEBUG (" Symbol Section:\n"); |
1075 | ARC_DEBUG (" section name = %s, output_offset 0x%08x", | |
1076 | reloc_data.sym_section->name, | |
1077 | (unsigned int) reloc_data.sym_section->output_offset); | |
34e967a5 | 1078 | if (reloc_data.sym_section->output_section != NULL) |
f7e8b360 | 1079 | ARC_DEBUG (", output_section->vma = 0x%08x", |
34e967a5 | 1080 | ((unsigned int) reloc_data.sym_section->output_section->vma)); |
f7e8b360 NC |
1081 | ARC_DEBUG ("\n"); |
1082 | if (reloc_data.sym_section->owner && reloc_data.sym_section->owner->filename) | |
1083 | ARC_DEBUG (" file: %s\n", reloc_data.sym_section->owner->filename); | |
886a2506 NC |
1084 | } |
1085 | else | |
34e967a5 | 1086 | { |
f7e8b360 | 1087 | ARC_DEBUG (" symbol section is NULL\n"); |
34e967a5 | 1088 | } |
886a2506 | 1089 | |
f7e8b360 | 1090 | ARC_DEBUG (" Input_section:\n"); |
886a2506 NC |
1091 | if (reloc_data.input_section != NULL) |
1092 | { | |
f7e8b360 NC |
1093 | ARC_DEBUG (" section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n", |
1094 | reloc_data.input_section->name, | |
1095 | (unsigned int) reloc_data.input_section->output_offset, | |
1096 | (unsigned int) reloc_data.input_section->output_section->vma); | |
1097 | ARC_DEBUG (" changed_address = 0x%08x\n", | |
1098 | (unsigned int) (reloc_data.input_section->output_section->vma | |
1099 | + reloc_data.input_section->output_offset | |
1100 | + reloc_data.reloc_offset)); | |
1101 | ARC_DEBUG (" file: %s\n", reloc_data.input_section->owner->filename); | |
886a2506 NC |
1102 | } |
1103 | else | |
34e967a5 | 1104 | { |
f7e8b360 | 1105 | ARC_DEBUG (" input section is NULL\n"); |
34e967a5 | 1106 | } |
886a2506 | 1107 | } |
f7e8b360 NC |
1108 | #else |
1109 | #define DEBUG_ARC_RELOC(A) | |
1110 | #endif /* ARC_ENABLE_DEBUG */ | |
886a2506 | 1111 | |
72f3b6aa CZ |
1112 | static bfd_vma |
1113 | middle_endian_convert (bfd_vma insn, bfd_boolean do_it) | |
6f4b1afc | 1114 | { |
72f3b6aa CZ |
1115 | if (do_it) |
1116 | { | |
08759e0f CM |
1117 | insn |
1118 | = ((insn & 0xffff0000) >> 16) | |
1119 | | ((insn & 0xffff) << 16); | |
72f3b6aa CZ |
1120 | } |
1121 | return insn; | |
6f4b1afc CM |
1122 | } |
1123 | ||
4b0c052e AB |
1124 | /* This function is called for relocations that are otherwise marked as NOT |
1125 | requiring overflow checks. In here we perform non-standard checks of | |
1126 | the relocation value. */ | |
1127 | ||
1128 | static inline bfd_reloc_status_type | |
1129 | arc_special_overflow_checks (const struct arc_relocation_data reloc_data, | |
08759e0f | 1130 | bfd_signed_vma relocation, |
4b0c052e AB |
1131 | struct bfd_link_info *info ATTRIBUTE_UNUSED) |
1132 | { | |
1133 | switch (reloc_data.howto->type) | |
1134 | { | |
1135 | case R_ARC_NPS_CMEM16: | |
1136 | if (((relocation >> 16) & 0xffff) != NPS_CMEM_HIGH_VALUE) | |
08759e0f CM |
1137 | { |
1138 | if (reloc_data.reloc_addend == 0) | |
4eca0228 | 1139 | _bfd_error_handler |
695344c0 | 1140 | /* xgettext:c-format */ |
2dcf00ce AM |
1141 | (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s' is invalid, " |
1142 | "16 MSB should be %#x (value is %#" PRIx64 ")"), | |
08759e0f CM |
1143 | reloc_data.input_section->owner, |
1144 | reloc_data.input_section, | |
2dcf00ce | 1145 | (uint64_t) reloc_data.reloc_offset, |
08759e0f CM |
1146 | reloc_data.symbol_name, |
1147 | NPS_CMEM_HIGH_VALUE, | |
2dcf00ce | 1148 | (uint64_t) relocation); |
08759e0f | 1149 | else |
4eca0228 | 1150 | _bfd_error_handler |
695344c0 | 1151 | /* xgettext:c-format */ |
2dcf00ce AM |
1152 | (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s+%#" PRIx64 |
1153 | "' is invalid, 16 MSB should be %#x (value is %#" PRIx64 ")"), | |
08759e0f CM |
1154 | reloc_data.input_section->owner, |
1155 | reloc_data.input_section, | |
2dcf00ce | 1156 | (uint64_t) reloc_data.reloc_offset, |
08759e0f | 1157 | reloc_data.symbol_name, |
2dcf00ce | 1158 | (uint64_t) reloc_data.reloc_addend, |
08759e0f | 1159 | NPS_CMEM_HIGH_VALUE, |
2dcf00ce | 1160 | (uint64_t) relocation); |
08759e0f CM |
1161 | return bfd_reloc_overflow; |
1162 | } | |
4b0c052e AB |
1163 | break; |
1164 | ||
1165 | default: | |
1166 | break; | |
1167 | } | |
1168 | ||
1169 | return bfd_reloc_ok; | |
1170 | } | |
1171 | ||
72f3b6aa CZ |
1172 | #define ME(reloc) (reloc) |
1173 | ||
1174 | #define IS_ME(FORMULA,BFD) ((strstr (FORMULA, "ME") != NULL) \ | |
1175 | && (!bfd_big_endian (BFD))) | |
1176 | ||
094fb063 | 1177 | #define S ((bfd_signed_vma) (reloc_data.sym_value \ |
34e967a5 MC |
1178 | + (reloc_data.sym_section->output_section != NULL ? \ |
1179 | (reloc_data.sym_section->output_offset \ | |
094fb063 CZ |
1180 | + reloc_data.sym_section->output_section->vma) : 0))) |
1181 | #define L ((bfd_signed_vma) (reloc_data.sym_value \ | |
34e967a5 MC |
1182 | + (reloc_data.sym_section->output_section != NULL ? \ |
1183 | (reloc_data.sym_section->output_offset \ | |
094fb063 | 1184 | + reloc_data.sym_section->output_section->vma) : 0))) |
886a2506 NC |
1185 | #define A (reloc_data.reloc_addend) |
1186 | #define B (0) | |
1187 | #define G (reloc_data.got_offset_value) | |
34e967a5 MC |
1188 | #define GOT (reloc_data.got_symbol_vma) |
1189 | #define GOT_BEGIN (htab->sgot->output_section->vma) | |
1190 | ||
886a2506 | 1191 | #define MES (0) |
34e967a5 MC |
1192 | /* P: relative offset to PCL The offset should be to the |
1193 | current location aligned to 32 bits. */ | |
094fb063 | 1194 | #define P ((bfd_signed_vma) ( \ |
34e967a5 MC |
1195 | ( \ |
1196 | (reloc_data.input_section->output_section != NULL ? \ | |
1197 | reloc_data.input_section->output_section->vma : 0) \ | |
1198 | + reloc_data.input_section->output_offset \ | |
094fb063 CZ |
1199 | + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0))) \ |
1200 | & ~0x3)) | |
1201 | #define PDATA ((bfd_signed_vma) ( \ | |
6f4b1afc CM |
1202 | (reloc_data.input_section->output_section->vma \ |
1203 | + reloc_data.input_section->output_offset \ | |
094fb063 | 1204 | + (reloc_data.reloc_offset)))) |
2ab2f40d CM |
1205 | #define SECTSTART (bfd_signed_vma) (reloc_data.sym_section->output_section->vma \ |
1206 | + reloc_data.sym_section->output_offset) | |
714e9a95 CM |
1207 | #define FINAL_SECTSTART \ |
1208 | (bfd_signed_vma) (reloc_data.sym_section->output_section->vma) | |
684d5a10 | 1209 | #define JLI (bfd_signed_vma) (reloc_data.sym_section->output_section->vma) |
094fb063 CZ |
1210 | #define _SDA_BASE_ (bfd_signed_vma) (reloc_data.sdata_begin_symbol_vma) |
1211 | #define TLS_REL (bfd_signed_vma) \ | |
1212 | ((elf_hash_table (info))->tls_sec->output_section->vma) | |
0411fca5 CM |
1213 | #define TLS_TBSS (align_power(TCB_SIZE, \ |
1214 | reloc_data.sym_section->alignment_power)) | |
34e967a5 | 1215 | |
886a2506 NC |
1216 | #define none (0) |
1217 | ||
f7e8b360 NC |
1218 | #ifdef ARC_ENABLE_DEBUG |
1219 | #define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA, TYPE) \ | |
1220 | do \ | |
1221 | { \ | |
1222 | asection *sym_section = reloc_data.sym_section; \ | |
1223 | asection *input_section = reloc_data.input_section; \ | |
1224 | ARC_DEBUG ("RELOC_TYPE = " TYPE "\n"); \ | |
1225 | ARC_DEBUG ("FORMULA = " FORMULA "\n"); \ | |
1226 | ARC_DEBUG ("S = %#lx\n", S); \ | |
1227 | ARC_DEBUG ("A = %#lx\n", A); \ | |
1228 | ARC_DEBUG ("L = %lx\n", L); \ | |
1229 | if (sym_section->output_section != NULL) \ | |
1230 | ARC_DEBUG ("symbol_section->vma = %#lx\n", \ | |
1231 | sym_section->output_section->vma \ | |
1232 | + sym_section->output_offset); \ | |
1233 | else \ | |
1234 | ARC_DEBUG ("symbol_section->vma = NULL\n"); \ | |
1235 | if (input_section->output_section != NULL) \ | |
1236 | ARC_DEBUG ("symbol_section->vma = %#lx\n", \ | |
1237 | input_section->output_section->vma \ | |
1238 | + input_section->output_offset); \ | |
1239 | else \ | |
1240 | ARC_DEBUG ("symbol_section->vma = NULL\n"); \ | |
1241 | ARC_DEBUG ("PCL = %#lx\n", P); \ | |
1242 | ARC_DEBUG ("P = %#lx\n", P); \ | |
1243 | ARC_DEBUG ("G = %#lx\n", G); \ | |
1244 | ARC_DEBUG ("SDA_OFFSET = %#lx\n", _SDA_BASE_); \ | |
34e967a5 | 1245 | ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \ |
f7e8b360 NC |
1246 | ARC_DEBUG ("GOT_OFFSET = %#lx\n", GOT); \ |
1247 | ARC_DEBUG ("relocation = %#08lx\n", relocation); \ | |
1248 | ARC_DEBUG ("before = %#08x\n", (unsigned) insn); \ | |
1249 | ARC_DEBUG ("data = %08x (%u) (%d)\n", (unsigned) relocation, \ | |
1250 | (unsigned) relocation, (int) relocation); \ | |
1251 | } \ | |
1252 | while (0) | |
1253 | ||
1254 | #define PRINT_DEBUG_RELOC_INFO_AFTER \ | |
1255 | do \ | |
1256 | { \ | |
1257 | ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \ | |
1258 | } \ | |
1259 | while (0) | |
34e967a5 | 1260 | |
f7e8b360 NC |
1261 | #else |
1262 | ||
1263 | #define PRINT_DEBUG_RELOC_INFO_BEFORE(...) | |
07d6d2b8 | 1264 | #define PRINT_DEBUG_RELOC_INFO_AFTER |
f7e8b360 NC |
1265 | |
1266 | #endif /* ARC_ENABLE_DEBUG */ | |
34e967a5 | 1267 | |
886a2506 | 1268 | #define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \ |
f7e8b360 NC |
1269 | case R_##TYPE: \ |
1270 | { \ | |
1271 | bfd_signed_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \ | |
1272 | relocation = FORMULA ; \ | |
1273 | PRINT_DEBUG_RELOC_INFO_BEFORE (#FORMULA, #TYPE); \ | |
1274 | insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \ | |
1275 | insn = (* get_replace_function (abfd, TYPE)) (insn, relocation); \ | |
1276 | insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \ | |
1277 | PRINT_DEBUG_RELOC_INFO_AFTER; \ | |
1278 | } \ | |
886a2506 NC |
1279 | break; |
1280 | ||
1281 | static bfd_reloc_status_type | |
34e967a5 MC |
1282 | arc_do_relocation (bfd_byte * contents, |
1283 | struct arc_relocation_data reloc_data, | |
1284 | struct bfd_link_info *info) | |
886a2506 | 1285 | { |
094fb063 | 1286 | bfd_signed_vma relocation = 0; |
886a2506 NC |
1287 | bfd_vma insn; |
1288 | bfd_vma orig_insn ATTRIBUTE_UNUSED; | |
72f3b6aa | 1289 | bfd * abfd = reloc_data.input_section->owner; |
34e967a5 | 1290 | struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info); |
4b0c052e | 1291 | bfd_reloc_status_type flag; |
886a2506 | 1292 | |
535b785f | 1293 | if (!reloc_data.should_relocate) |
34e967a5 | 1294 | return bfd_reloc_ok; |
886a2506 NC |
1295 | |
1296 | switch (reloc_data.howto->size) | |
1297 | { | |
1298 | case 2: | |
72f3b6aa | 1299 | insn = arc_bfd_get_32 (abfd, |
886a2506 NC |
1300 | contents + reloc_data.reloc_offset, |
1301 | reloc_data.input_section); | |
1302 | break; | |
1303 | case 1: | |
72f3b6aa CZ |
1304 | insn = arc_bfd_get_16 (abfd, |
1305 | contents + reloc_data.reloc_offset, | |
1306 | reloc_data.input_section); | |
1307 | break; | |
886a2506 | 1308 | case 0: |
72f3b6aa | 1309 | insn = arc_bfd_get_8 (abfd, |
886a2506 NC |
1310 | contents + reloc_data.reloc_offset, |
1311 | reloc_data.input_section); | |
1312 | break; | |
1313 | default: | |
1314 | insn = 0; | |
1315 | BFD_ASSERT (0); | |
1316 | break; | |
1317 | } | |
1318 | ||
1319 | orig_insn = insn; | |
1320 | ||
1321 | switch (reloc_data.howto->type) | |
1322 | { | |
34e967a5 | 1323 | #include "elf/arc-reloc.def" |
886a2506 NC |
1324 | |
1325 | default: | |
1326 | BFD_ASSERT (0); | |
1327 | break; | |
1328 | } | |
1329 | ||
1330 | /* Check for relocation overflow. */ | |
1331 | if (reloc_data.howto->complain_on_overflow != complain_overflow_dont) | |
4b0c052e | 1332 | flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow, |
08759e0f CM |
1333 | reloc_data.howto->bitsize, |
1334 | reloc_data.howto->rightshift, | |
1335 | bfd_arch_bits_per_address (abfd), | |
1336 | relocation); | |
4b0c052e AB |
1337 | else |
1338 | flag = arc_special_overflow_checks (reloc_data, relocation, info); | |
886a2506 | 1339 | |
4b0c052e AB |
1340 | if (flag != bfd_reloc_ok) |
1341 | { | |
f7e8b360 | 1342 | ARC_DEBUG ("Relocation overflows !\n"); |
4b0c052e | 1343 | DEBUG_ARC_RELOC (reloc_data); |
f7e8b360 NC |
1344 | ARC_DEBUG ("Relocation value = signed -> %d, unsigned -> %u" |
1345 | ", hex -> (0x%08x)\n", | |
1346 | (int) relocation, (unsigned) relocation, (int) relocation); | |
886a2506 | 1347 | |
4b0c052e | 1348 | return flag; |
886a2506 | 1349 | } |
886a2506 | 1350 | |
4b0c052e | 1351 | /* Write updated instruction back to memory. */ |
886a2506 NC |
1352 | switch (reloc_data.howto->size) |
1353 | { | |
1354 | case 2: | |
72f3b6aa | 1355 | arc_bfd_put_32 (abfd, insn, |
886a2506 NC |
1356 | contents + reloc_data.reloc_offset, |
1357 | reloc_data.input_section); | |
1358 | break; | |
1359 | case 1: | |
72f3b6aa CZ |
1360 | arc_bfd_put_16 (abfd, insn, |
1361 | contents + reloc_data.reloc_offset, | |
1362 | reloc_data.input_section); | |
1363 | break; | |
886a2506 | 1364 | case 0: |
72f3b6aa | 1365 | arc_bfd_put_8 (abfd, insn, |
886a2506 NC |
1366 | contents + reloc_data.reloc_offset, |
1367 | reloc_data.input_section); | |
1368 | break; | |
1369 | default: | |
1370 | ARC_DEBUG ("size = %d\n", reloc_data.howto->size); | |
1371 | BFD_ASSERT (0); | |
1372 | break; | |
1373 | } | |
1374 | ||
1375 | return bfd_reloc_ok; | |
1376 | } | |
1377 | #undef S | |
1378 | #undef A | |
1379 | #undef B | |
1380 | #undef G | |
1381 | #undef GOT | |
1382 | #undef L | |
1383 | #undef MES | |
1384 | #undef P | |
1385 | #undef SECTSTAR | |
1386 | #undef SECTSTART | |
684d5a10 | 1387 | #undef JLI |
886a2506 NC |
1388 | #undef _SDA_BASE_ |
1389 | #undef none | |
1390 | ||
1391 | #undef ARC_RELOC_HOWTO | |
1392 | ||
886a2506 | 1393 | |
886a2506 NC |
1394 | /* Relocate an arc ELF section. |
1395 | Function : elf_arc_relocate_section | |
1396 | Brief : Relocate an arc section, by handling all the relocations | |
34e967a5 | 1397 | appearing in that section. |
886a2506 | 1398 | Args : output_bfd : The bfd being written to. |
34e967a5 MC |
1399 | info : Link information. |
1400 | input_bfd : The input bfd. | |
1401 | input_section : The section being relocated. | |
1402 | contents : contents of the section being relocated. | |
1403 | relocs : List of relocations in the section. | |
1404 | local_syms : is a pointer to the swapped in local symbols. | |
1405 | local_section : is an array giving the section in the input file | |
1406 | corresponding to the st_shndx field of each | |
1407 | local symbol. */ | |
886a2506 | 1408 | static bfd_boolean |
07d6d2b8 | 1409 | elf_arc_relocate_section (bfd * output_bfd, |
886a2506 | 1410 | struct bfd_link_info * info, |
07d6d2b8 AM |
1411 | bfd * input_bfd, |
1412 | asection * input_section, | |
1413 | bfd_byte * contents, | |
886a2506 NC |
1414 | Elf_Internal_Rela * relocs, |
1415 | Elf_Internal_Sym * local_syms, | |
07d6d2b8 | 1416 | asection ** local_sections) |
886a2506 | 1417 | { |
07d6d2b8 | 1418 | Elf_Internal_Shdr * symtab_hdr; |
f7e8b360 | 1419 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
1420 | Elf_Internal_Rela * rel; |
1421 | Elf_Internal_Rela * wrel; | |
1422 | Elf_Internal_Rela * relend; | |
f7e8b360 | 1423 | struct elf_link_hash_table * htab = elf_hash_table (info); |
886a2506 NC |
1424 | |
1425 | symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr); | |
1426 | sym_hashes = elf_sym_hashes (input_bfd); | |
1427 | ||
3c8adaca | 1428 | rel = wrel = relocs; |
886a2506 | 1429 | relend = relocs + input_section->reloc_count; |
3c8adaca | 1430 | for (; rel < relend; wrel++, rel++) |
886a2506 | 1431 | { |
07d6d2b8 | 1432 | enum elf_arc_reloc_type r_type; |
34e967a5 | 1433 | reloc_howto_type * howto; |
f7e8b360 | 1434 | unsigned long r_symndx; |
886a2506 | 1435 | struct elf_link_hash_entry * h; |
34e967a5 MC |
1436 | Elf_Internal_Sym * sym; |
1437 | asection * sec; | |
f7e8b360 | 1438 | struct elf_link_hash_entry * h2; |
07d6d2b8 | 1439 | const char * msg; |
f4e6805f | 1440 | bfd_boolean unresolved_reloc = FALSE; |
886a2506 NC |
1441 | |
1442 | struct arc_relocation_data reloc_data = | |
1443 | { | |
34e967a5 MC |
1444 | .reloc_offset = 0, |
1445 | .reloc_addend = 0, | |
1446 | .got_offset_value = 0, | |
07d6d2b8 | 1447 | .sym_value = 0, |
34e967a5 MC |
1448 | .sym_section = NULL, |
1449 | .howto = NULL, | |
1450 | .input_section = NULL, | |
1451 | .sdata_begin_symbol_vma = 0, | |
1452 | .sdata_begin_symbol_vma_set = FALSE, | |
1453 | .got_symbol_vma = 0, | |
1454 | .should_relocate = FALSE | |
886a2506 NC |
1455 | }; |
1456 | ||
34e967a5 MC |
1457 | r_type = ELF32_R_TYPE (rel->r_info); |
1458 | ||
1459 | if (r_type >= (int) R_ARC_max) | |
1460 | { | |
1461 | bfd_set_error (bfd_error_bad_value); | |
1462 | return FALSE; | |
1463 | } | |
3c8adaca | 1464 | howto = arc_elf_howto (r_type); |
34e967a5 MC |
1465 | |
1466 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1467 | ||
1468 | /* If we are generating another .o file and the symbol in not | |
1469 | local, skip this relocation. */ | |
1470 | if (bfd_link_relocatable (info)) | |
1471 | { | |
1472 | /* This is a relocateable link. We don't have to change | |
1473 | anything, unless the reloc is against a section symbol, | |
1474 | in which case we have to adjust according to where the | |
1475 | section symbol winds up in the output section. */ | |
1476 | ||
1477 | /* Checks if this is a local symbol and thus the reloc | |
1478 | might (will??) be against a section symbol. */ | |
1479 | if (r_symndx < symtab_hdr->sh_info) | |
1480 | { | |
1481 | sym = local_syms + r_symndx; | |
1482 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1483 | { | |
1484 | sec = local_sections[r_symndx]; | |
1485 | ||
f7e8b360 | 1486 | /* For RELA relocs. Just adjust the addend |
34e967a5 MC |
1487 | value in the relocation entry. */ |
1488 | rel->r_addend += sec->output_offset + sym->st_value; | |
1489 | ||
f7e8b360 NC |
1490 | ARC_DEBUG ("local symbols reloc (section=%d %s) seen in %s\n", |
1491 | (int) r_symndx, local_sections[r_symndx]->name, | |
1492 | __PRETTY_FUNCTION__); | |
34e967a5 MC |
1493 | } |
1494 | } | |
34e967a5 | 1495 | } |
886a2506 NC |
1496 | |
1497 | h2 = elf_link_hash_lookup (elf_hash_table (info), "__SDATA_BEGIN__", | |
1498 | FALSE, FALSE, TRUE); | |
1499 | ||
535b785f AM |
1500 | if (!reloc_data.sdata_begin_symbol_vma_set |
1501 | && h2 != NULL && h2->root.type != bfd_link_hash_undefined | |
1502 | && h2->root.u.def.section->output_section != NULL) | |
34e967a5 | 1503 | /* TODO: Verify this condition. */ |
886a2506 NC |
1504 | { |
1505 | reloc_data.sdata_begin_symbol_vma = | |
08759e0f CM |
1506 | (h2->root.u.def.value |
1507 | + h2->root.u.def.section->output_section->vma); | |
886a2506 NC |
1508 | reloc_data.sdata_begin_symbol_vma_set = TRUE; |
1509 | } | |
1510 | ||
886a2506 NC |
1511 | reloc_data.input_section = input_section; |
1512 | reloc_data.howto = howto; | |
1513 | reloc_data.reloc_offset = rel->r_offset; | |
1514 | reloc_data.reloc_addend = rel->r_addend; | |
1515 | ||
886a2506 NC |
1516 | /* This is a final link. */ |
1517 | h = NULL; | |
1518 | sym = NULL; | |
1519 | sec = NULL; | |
1520 | ||
1521 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
1522 | { | |
1523 | sym = local_syms + r_symndx; | |
1524 | sec = local_sections[r_symndx]; | |
3c8adaca CZ |
1525 | } |
1526 | else | |
1527 | { | |
f4e6805f CM |
1528 | bfd_boolean warned, ignored; |
1529 | bfd_vma relocation ATTRIBUTE_UNUSED; | |
1530 | ||
1531 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
1532 | r_symndx, symtab_hdr, sym_hashes, | |
1533 | h, sec, relocation, | |
1534 | unresolved_reloc, warned, ignored); | |
1535 | ||
3c8adaca CZ |
1536 | /* TODO: This code is repeated from below. We should |
1537 | clean it and remove duplications. | |
1538 | Sec is used check for discarded sections. | |
1539 | Need to redesign code below. */ | |
1540 | ||
1541 | /* Get the symbol's entry in the symtab. */ | |
1542 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1543 | ||
1544 | while (h->root.type == bfd_link_hash_indirect | |
1545 | || h->root.type == bfd_link_hash_warning) | |
1546 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1547 | ||
1548 | /* If we have encountered a definition for this symbol. */ | |
1549 | if (h->root.type == bfd_link_hash_defined | |
1550 | || h->root.type == bfd_link_hash_defweak) | |
1551 | { | |
1552 | reloc_data.sym_value = h->root.u.def.value; | |
1553 | sec = h->root.u.def.section; | |
1554 | } | |
1555 | } | |
1556 | ||
1557 | /* Clean relocs for symbols in discarded sections. */ | |
1558 | if (sec != NULL && discarded_section (sec)) | |
1559 | { | |
1560 | _bfd_clear_contents (howto, input_bfd, input_section, | |
0930cb30 | 1561 | contents, rel->r_offset); |
3c8adaca CZ |
1562 | rel->r_info = 0; |
1563 | rel->r_addend = 0; | |
1564 | ||
1565 | /* For ld -r, remove relocations in debug sections against | |
1566 | sections defined in discarded sections. Not done for | |
1567 | eh_frame editing code expects to be present. */ | |
1568 | if (bfd_link_relocatable (info) | |
1569 | && (input_section->flags & SEC_DEBUGGING)) | |
1570 | wrel--; | |
1571 | ||
1572 | continue; | |
1573 | } | |
1574 | ||
1575 | if (bfd_link_relocatable (info)) | |
1576 | { | |
1577 | if (wrel != rel) | |
1578 | *wrel = *rel; | |
1579 | continue; | |
1580 | } | |
1581 | ||
1582 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
1583 | { | |
886a2506 NC |
1584 | reloc_data.sym_value = sym->st_value; |
1585 | reloc_data.sym_section = sec; | |
4b0c052e | 1586 | reloc_data.symbol_name = |
3c8adaca CZ |
1587 | bfd_elf_string_from_elf_section (input_bfd, |
1588 | symtab_hdr->sh_link, | |
1589 | sym->st_name); | |
886a2506 | 1590 | |
841fdfcd CZ |
1591 | /* Mergeable section handling. */ |
1592 | if ((sec->flags & SEC_MERGE) | |
1593 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
1594 | { | |
1595 | asection *msec; | |
1596 | msec = sec; | |
1597 | rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym, | |
1598 | &msec, rel->r_addend); | |
1599 | rel->r_addend -= (sec->output_section->vma | |
1600 | + sec->output_offset | |
1601 | + sym->st_value); | |
1602 | rel->r_addend += msec->output_section->vma + msec->output_offset; | |
1603 | ||
1604 | reloc_data.reloc_addend = rel->r_addend; | |
1605 | } | |
1606 | ||
34e967a5 MC |
1607 | BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto)); |
1608 | if (htab->sgot != NULL) | |
1609 | reloc_data.got_symbol_vma = htab->sgot->output_section->vma | |
1610 | + htab->sgot->output_offset; | |
886a2506 NC |
1611 | |
1612 | reloc_data.should_relocate = TRUE; | |
1613 | } | |
1614 | else /* Global symbol. */ | |
1615 | { | |
f7e8b360 NC |
1616 | /* FIXME: We should use the RELOC_FOR_GLOBAL_SYMBOL macro |
1617 | (defined in elf-bfd.h) here. */ | |
1618 | ||
886a2506 NC |
1619 | /* Get the symbol's entry in the symtab. */ |
1620 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1621 | ||
1622 | while (h->root.type == bfd_link_hash_indirect | |
1623 | || h->root.type == bfd_link_hash_warning) | |
cc89d0b3 | 1624 | { |
854b8506 CM |
1625 | struct elf_arc_link_hash_entry *ah_old = |
1626 | (struct elf_arc_link_hash_entry *) h; | |
886a2506 | 1627 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
854b8506 CM |
1628 | struct elf_arc_link_hash_entry *ah = |
1629 | (struct elf_arc_link_hash_entry *) h; | |
1630 | ||
1631 | if (ah->got_ents == 0 && ah_old->got_ents != ah->got_ents) | |
1632 | ah->got_ents = ah_old->got_ents; | |
cc89d0b3 | 1633 | } |
886a2506 | 1634 | |
3c8adaca CZ |
1635 | /* TODO: Need to validate what was the intention. */ |
1636 | /* BFD_ASSERT ((h->dynindx == -1) || (h->forced_local != 0)); */ | |
4b0c052e | 1637 | reloc_data.symbol_name = h->root.root.string; |
3c8adaca | 1638 | |
886a2506 NC |
1639 | /* If we have encountered a definition for this symbol. */ |
1640 | if (h->root.type == bfd_link_hash_defined | |
1641 | || h->root.type == bfd_link_hash_defweak) | |
1642 | { | |
1643 | reloc_data.sym_value = h->root.u.def.value; | |
1644 | reloc_data.sym_section = h->root.u.def.section; | |
1645 | ||
1646 | reloc_data.should_relocate = TRUE; | |
1647 | ||
34e967a5 | 1648 | if (is_reloc_for_GOT (howto) && !bfd_link_pic (info)) |
886a2506 | 1649 | { |
854b8506 CM |
1650 | struct elf_arc_link_hash_entry *ah = |
1651 | (struct elf_arc_link_hash_entry *) h; | |
34e967a5 MC |
1652 | /* TODO: Change it to use arc_do_relocation with |
1653 | ARC_32 reloc. Try to use ADD_RELA macro. */ | |
886a2506 NC |
1654 | bfd_vma relocation = |
1655 | reloc_data.sym_value + reloc_data.reloc_addend | |
34e967a5 MC |
1656 | + (reloc_data.sym_section->output_section != NULL ? |
1657 | (reloc_data.sym_section->output_offset | |
1658 | + reloc_data.sym_section->output_section->vma) | |
1659 | : 0); | |
1660 | ||
854b8506 CM |
1661 | BFD_ASSERT (ah->got_ents); |
1662 | bfd_vma got_offset = ah->got_ents->offset; | |
34e967a5 MC |
1663 | bfd_put_32 (output_bfd, relocation, |
1664 | htab->sgot->contents + got_offset); | |
1665 | } | |
1666 | if (is_reloc_for_PLT (howto) && h->plt.offset != (bfd_vma) -1) | |
1667 | { | |
1668 | /* TODO: This is repeated up here. */ | |
1669 | reloc_data.sym_value = h->plt.offset; | |
1670 | reloc_data.sym_section = htab->splt; | |
886a2506 NC |
1671 | } |
1672 | } | |
1673 | else if (h->root.type == bfd_link_hash_undefweak) | |
1674 | { | |
1675 | /* Is weak symbol and has no definition. */ | |
34e967a5 MC |
1676 | if (is_reloc_for_GOT (howto)) |
1677 | { | |
1678 | reloc_data.sym_value = h->root.u.def.value; | |
1679 | reloc_data.sym_section = htab->sgot; | |
1680 | reloc_data.should_relocate = TRUE; | |
1681 | } | |
1682 | else if (is_reloc_for_PLT (howto) | |
1683 | && h->plt.offset != (bfd_vma) -1) | |
1684 | { | |
1685 | /* TODO: This is repeated up here. */ | |
1686 | reloc_data.sym_value = h->plt.offset; | |
1687 | reloc_data.sym_section = htab->splt; | |
1688 | reloc_data.should_relocate = TRUE; | |
1689 | } | |
1690 | else | |
1691 | continue; | |
886a2506 NC |
1692 | } |
1693 | else | |
1694 | { | |
1695 | if (is_reloc_for_GOT (howto)) | |
1696 | { | |
886a2506 | 1697 | reloc_data.sym_value = h->root.u.def.value; |
34e967a5 | 1698 | reloc_data.sym_section = htab->sgot; |
886a2506 NC |
1699 | |
1700 | reloc_data.should_relocate = TRUE; | |
1701 | } | |
1702 | else if (is_reloc_for_PLT (howto)) | |
1703 | { | |
7e458899 CZ |
1704 | /* Fail if it is linking for PIE and the symbol is |
1705 | undefined. */ | |
1a72702b AM |
1706 | if (bfd_link_executable (info)) |
1707 | (*info->callbacks->undefined_symbol) | |
1708 | (info, h->root.root.string, input_bfd, input_section, | |
1709 | rel->r_offset, TRUE); | |
886a2506 | 1710 | reloc_data.sym_value = h->plt.offset; |
34e967a5 | 1711 | reloc_data.sym_section = htab->splt; |
886a2506 NC |
1712 | |
1713 | reloc_data.should_relocate = TRUE; | |
1714 | } | |
8a36df4d | 1715 | else if (!bfd_link_pic (info) || bfd_link_executable (info)) |
1a72702b AM |
1716 | (*info->callbacks->undefined_symbol) |
1717 | (info, h->root.root.string, input_bfd, input_section, | |
1718 | rel->r_offset, TRUE); | |
886a2506 NC |
1719 | } |
1720 | ||
34e967a5 MC |
1721 | BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto)); |
1722 | if (htab->sgot != NULL) | |
1723 | reloc_data.got_symbol_vma = htab->sgot->output_section->vma | |
1724 | + htab->sgot->output_offset; | |
886a2506 NC |
1725 | } |
1726 | ||
08759e0f CM |
1727 | if ((is_reloc_for_GOT (howto) |
1728 | || is_reloc_for_TLS (howto))) | |
1729 | { | |
980aa3e6 CM |
1730 | reloc_data.should_relocate = TRUE; |
1731 | ||
08759e0f | 1732 | struct got_entry **list |
0f206410 | 1733 | = get_got_entry_list_for_symbol (input_bfd, r_symndx, h); |
08759e0f CM |
1734 | |
1735 | reloc_data.got_offset_value | |
1736 | = relocate_fix_got_relocs_for_got_info (list, | |
1737 | tls_type_for_reloc (howto), | |
1738 | info, | |
1739 | output_bfd, | |
1740 | r_symndx, | |
1741 | local_syms, | |
1742 | local_sections, | |
1743 | h, | |
1744 | &reloc_data); | |
1745 | ||
1746 | if (h == NULL) | |
1747 | { | |
1748 | create_got_dynrelocs_for_single_entry ( | |
1749 | got_entry_for_type (list, | |
07d6d2b8 | 1750 | arc_got_entry_type_for_reloc (howto)), |
08759e0f CM |
1751 | output_bfd, info, NULL); |
1752 | } | |
1753 | } | |
f7e8b360 | 1754 | |
cd640291 CM |
1755 | |
1756 | #define IS_ARC_PCREL_TYPE(TYPE) \ | |
1757 | ( (TYPE == R_ARC_PC32) \ | |
1758 | || (TYPE == R_ARC_32_PCREL)) | |
1759 | ||
34e967a5 MC |
1760 | switch (r_type) |
1761 | { | |
1762 | case R_ARC_32: | |
1763 | case R_ARC_32_ME: | |
1764 | case R_ARC_PC32: | |
1765 | case R_ARC_32_PCREL: | |
cd640291 CM |
1766 | if (bfd_link_pic (info) |
1767 | && (!IS_ARC_PCREL_TYPE (r_type) | |
34e967a5 MC |
1768 | || (h != NULL |
1769 | && h->dynindx != -1 | |
cd640291 | 1770 | && !h->def_regular |
34e967a5 MC |
1771 | && (!info->symbolic || !h->def_regular)))) |
1772 | { | |
1773 | Elf_Internal_Rela outrel; | |
1774 | bfd_byte *loc; | |
1775 | bfd_boolean skip = FALSE; | |
1776 | bfd_boolean relocate = FALSE; | |
1777 | asection *sreloc = _bfd_elf_get_dynamic_reloc_section | |
1778 | (input_bfd, input_section, | |
1779 | /*RELA*/ TRUE); | |
1780 | ||
1781 | BFD_ASSERT (sreloc != NULL); | |
1782 | ||
1783 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, | |
1784 | info, | |
1785 | input_section, | |
1786 | rel->r_offset); | |
cd640291 | 1787 | |
34e967a5 MC |
1788 | if (outrel.r_offset == (bfd_vma) -1) |
1789 | skip = TRUE; | |
1790 | ||
1791 | outrel.r_addend = rel->r_addend; | |
1792 | outrel.r_offset += (input_section->output_section->vma | |
1793 | + input_section->output_offset); | |
1794 | ||
1795 | if (skip) | |
1796 | { | |
1797 | memset (&outrel, 0, sizeof outrel); | |
1798 | relocate = FALSE; | |
1799 | } | |
3c8adaca CZ |
1800 | else if (h != NULL |
1801 | && h->dynindx != -1 | |
cd640291 CM |
1802 | && (IS_ARC_PCREL_TYPE (r_type) |
1803 | || !(bfd_link_executable (info) | |
1804 | || SYMBOLIC_BIND (info, h)) | |
1805 | || ! h->def_regular)) | |
34e967a5 | 1806 | { |
94e5c971 | 1807 | BFD_ASSERT (h != NULL); |
34e967a5 MC |
1808 | if ((input_section->flags & SEC_ALLOC) != 0) |
1809 | relocate = FALSE; | |
1810 | else | |
1811 | relocate = TRUE; | |
94e5c971 CZ |
1812 | |
1813 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
1814 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
1815 | } | |
1816 | else | |
1817 | { | |
1818 | /* Handle local symbols, they either do not have a | |
1819 | global hash table entry (h == NULL), or are | |
1820 | forced local due to a version script | |
1821 | (h->forced_local), or the third condition is | |
1822 | legacy, it appears to say something like, for | |
1823 | links where we are pre-binding the symbols, or | |
1824 | there's not an entry for this symbol in the | |
1825 | dynamic symbol table, and it's a regular symbol | |
1826 | not defined in a shared object, then treat the | |
1827 | symbol as local, resolve it now. */ | |
3c8adaca CZ |
1828 | relocate = TRUE; |
1829 | /* outrel.r_addend = 0; */ | |
1830 | outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE); | |
34e967a5 MC |
1831 | } |
1832 | ||
1833 | BFD_ASSERT (sreloc->contents != 0); | |
1834 | ||
1835 | loc = sreloc->contents; | |
1836 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); | |
1837 | sreloc->reloc_count += 1; | |
1838 | ||
1839 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); | |
1840 | ||
535b785f | 1841 | if (!relocate) |
34e967a5 MC |
1842 | continue; |
1843 | } | |
1844 | break; | |
1845 | default: | |
1846 | break; | |
1847 | } | |
1848 | ||
1849 | if (is_reloc_SDA_relative (howto) | |
535b785f | 1850 | && !reloc_data.sdata_begin_symbol_vma_set) |
886a2506 | 1851 | { |
4eca0228 | 1852 | _bfd_error_handler |
38f14ab8 | 1853 | ("error: linker symbol __SDATA_BEGIN__ not found"); |
886a2506 NC |
1854 | bfd_set_error (bfd_error_bad_value); |
1855 | return FALSE; | |
1856 | } | |
1857 | ||
1858 | DEBUG_ARC_RELOC (reloc_data); | |
34e967a5 | 1859 | |
2ab2f40d | 1860 | /* Make sure we have with a dynamic linker. In case of GOT and PLT |
08759e0f | 1861 | the sym_section should point to .got or .plt respectively. */ |
815dc1bc CZ |
1862 | if ((is_reloc_for_GOT (howto) || is_reloc_for_PLT (howto)) |
1863 | && reloc_data.sym_section == NULL) | |
2ab2f40d | 1864 | { |
4eca0228 | 1865 | _bfd_error_handler |
38f14ab8 | 1866 | (_("GOT and PLT relocations cannot be fixed with a non dynamic linker")); |
2ab2f40d CM |
1867 | bfd_set_error (bfd_error_bad_value); |
1868 | return FALSE; | |
1869 | } | |
1870 | ||
f7e8b360 NC |
1871 | msg = NULL; |
1872 | switch (arc_do_relocation (contents, reloc_data, info)) | |
1873 | { | |
1874 | case bfd_reloc_ok: | |
1875 | continue; /* The reloc processing loop. */ | |
1876 | ||
1877 | case bfd_reloc_overflow: | |
1878 | (*info->callbacks->reloc_overflow) | |
1879 | (info, (h ? &h->root : NULL), reloc_data.symbol_name, howto->name, (bfd_vma) 0, | |
1880 | input_bfd, input_section, rel->r_offset); | |
1881 | break; | |
1882 | ||
1883 | case bfd_reloc_undefined: | |
1884 | (*info->callbacks->undefined_symbol) | |
1885 | (info, reloc_data.symbol_name, input_bfd, input_section, rel->r_offset, TRUE); | |
1886 | break; | |
1887 | ||
1888 | case bfd_reloc_other: | |
695344c0 | 1889 | /* xgettext:c-format */ |
871b3ab2 | 1890 | msg = _("%pB(%pA): warning: unaligned access to symbol '%s' in the small data area"); |
f7e8b360 NC |
1891 | break; |
1892 | ||
1893 | case bfd_reloc_outofrange: | |
695344c0 | 1894 | /* xgettext:c-format */ |
871b3ab2 | 1895 | msg = _("%pB(%pA): internal error: out of range error"); |
f7e8b360 NC |
1896 | break; |
1897 | ||
1898 | case bfd_reloc_notsupported: | |
695344c0 | 1899 | /* xgettext:c-format */ |
871b3ab2 | 1900 | msg = _("%pB(%pA): internal error: unsupported relocation error"); |
f7e8b360 NC |
1901 | break; |
1902 | ||
1903 | case bfd_reloc_dangerous: | |
695344c0 | 1904 | /* xgettext:c-format */ |
871b3ab2 | 1905 | msg = _("%pB(%pA): internal error: dangerous relocation"); |
f7e8b360 NC |
1906 | break; |
1907 | ||
1908 | default: | |
695344c0 | 1909 | /* xgettext:c-format */ |
871b3ab2 | 1910 | msg = _("%pB(%pA): internal error: unknown error"); |
f7e8b360 NC |
1911 | break; |
1912 | } | |
1913 | ||
1914 | if (msg) | |
1915 | _bfd_error_handler (msg, input_bfd, input_section, reloc_data.symbol_name); | |
1916 | return FALSE; | |
886a2506 NC |
1917 | } |
1918 | ||
1919 | return TRUE; | |
1920 | } | |
1921 | ||
8a36df4d CM |
1922 | #define elf_arc_hash_table(p) \ |
1923 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ | |
1924 | == ARC_ELF_DATA ? ((struct elf_arc_link_hash_table *) ((p)->hash)) : NULL) | |
1925 | ||
886a2506 | 1926 | static bfd_boolean |
08759e0f | 1927 | elf_arc_check_relocs (bfd * abfd, |
886a2506 | 1928 | struct bfd_link_info * info, |
34e967a5 | 1929 | asection * sec, |
886a2506 NC |
1930 | const Elf_Internal_Rela * relocs) |
1931 | { | |
34e967a5 MC |
1932 | Elf_Internal_Shdr * symtab_hdr; |
1933 | struct elf_link_hash_entry ** sym_hashes; | |
34e967a5 MC |
1934 | const Elf_Internal_Rela * rel; |
1935 | const Elf_Internal_Rela * rel_end; | |
1936 | bfd * dynobj; | |
1937 | asection * sreloc = NULL; | |
e3d1d408 | 1938 | struct elf_link_hash_table * htab = elf_hash_table (info); |
34e967a5 MC |
1939 | |
1940 | if (bfd_link_relocatable (info)) | |
1941 | return TRUE; | |
886a2506 | 1942 | |
e3d1d408 CM |
1943 | if (htab->dynobj == NULL) |
1944 | htab->dynobj = abfd; | |
1945 | ||
886a2506 NC |
1946 | dynobj = (elf_hash_table (info))->dynobj; |
1947 | symtab_hdr = &((elf_tdata (abfd))->symtab_hdr); | |
1948 | sym_hashes = elf_sym_hashes (abfd); | |
886a2506 NC |
1949 | |
1950 | rel_end = relocs + sec->reloc_count; | |
1951 | for (rel = relocs; rel < rel_end; rel++) | |
1952 | { | |
1953 | enum elf_arc_reloc_type r_type; | |
1954 | reloc_howto_type *howto; | |
1955 | unsigned long r_symndx; | |
1956 | struct elf_link_hash_entry *h; | |
1957 | ||
1958 | r_type = ELF32_R_TYPE (rel->r_info); | |
1959 | ||
1960 | if (r_type >= (int) R_ARC_max) | |
1961 | { | |
1962 | bfd_set_error (bfd_error_bad_value); | |
1963 | return FALSE; | |
1964 | } | |
3c8adaca | 1965 | howto = arc_elf_howto (r_type); |
34e967a5 | 1966 | |
886a2506 NC |
1967 | /* Load symbol information. */ |
1968 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1969 | if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */ | |
1970 | h = NULL; | |
1971 | else /* Global one. */ | |
2936af90 CM |
1972 | { |
1973 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1974 | while (h->root.type == bfd_link_hash_indirect | |
1975 | || h->root.type == bfd_link_hash_warning) | |
1976 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1977 | } | |
886a2506 | 1978 | |
854b8506 | 1979 | |
34e967a5 MC |
1980 | switch (r_type) |
1981 | { | |
d07b621f CM |
1982 | case R_ARC_32: |
1983 | case R_ARC_32_ME: | |
1984 | /* During shared library creation, these relocs should not | |
1985 | appear in a shared library (as memory will be read only | |
1986 | and the dynamic linker can not resolve these. However | |
1987 | the error should not occur for e.g. debugging or | |
1988 | non-readonly sections. */ | |
1989 | if (h != NULL | |
1990 | && (bfd_link_dll (info) && !bfd_link_pie (info)) | |
1991 | && (sec->flags & SEC_ALLOC) != 0 | |
1992 | && (sec->flags & SEC_READONLY) != 0 | |
1993 | && ((sec->flags & SEC_CODE) != 0 | |
1994 | || (sec->flags & SEC_DEBUGGING) != 0)) | |
1995 | { | |
1996 | const char *name; | |
1997 | if (h) | |
1998 | name = h->root.root.string; | |
1999 | else | |
2000 | name = "UNKNOWN"; | |
2001 | _bfd_error_handler | |
2002 | /* xgettext:c-format */ | |
2003 | (_("%pB: relocation %s against `%s' can not be used" | |
2004 | " when making a shared object; recompile with -fPIC"), | |
2005 | abfd, | |
2006 | arc_elf_howto (r_type)->name, | |
2007 | name); | |
2008 | bfd_set_error (bfd_error_bad_value); | |
2009 | return FALSE; | |
2010 | } | |
34e967a5 MC |
2011 | |
2012 | /* In some cases we are not setting the 'non_got_ref' | |
2013 | flag, even though the relocations don't require a GOT | |
2014 | access. We should extend the testing in this area to | |
2015 | ensure that no significant cases are being missed. */ | |
2016 | if (h) | |
2017 | h->non_got_ref = 1; | |
2018 | /* FALLTHROUGH */ | |
2019 | case R_ARC_PC32: | |
2020 | case R_ARC_32_PCREL: | |
8a36df4d | 2021 | if ((bfd_link_pic (info)) |
34e967a5 MC |
2022 | && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL) |
2023 | || (h != NULL | |
34e967a5 MC |
2024 | && (!info->symbolic || !h->def_regular)))) |
2025 | { | |
2026 | if (sreloc == NULL) | |
2027 | { | |
e3d1d408 CM |
2028 | if (info->dynamic |
2029 | && ! htab->dynamic_sections_created | |
2030 | && ! _bfd_elf_link_create_dynamic_sections (abfd, info)) | |
2031 | return FALSE; | |
34e967a5 MC |
2032 | sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj, |
2033 | 2, abfd, | |
2034 | /*rela*/ | |
2035 | TRUE); | |
2036 | ||
2037 | if (sreloc == NULL) | |
2038 | return FALSE; | |
2039 | } | |
2040 | sreloc->size += sizeof (Elf32_External_Rela); | |
2041 | ||
2042 | } | |
2043 | default: | |
2044 | break; | |
2045 | } | |
2046 | ||
535b785f | 2047 | if (is_reloc_for_PLT (howto)) |
886a2506 NC |
2048 | { |
2049 | if (h == NULL) | |
2050 | continue; | |
2051 | else | |
ab16fcd7 CM |
2052 | if (h->forced_local == 0) |
2053 | h->needs_plt = 1; | |
886a2506 NC |
2054 | } |
2055 | ||
08759e0f | 2056 | /* Add info to the symbol got_entry_list. */ |
535b785f AM |
2057 | if (is_reloc_for_GOT (howto) |
2058 | || is_reloc_for_TLS (howto)) | |
34e967a5 | 2059 | { |
d07b621f CM |
2060 | if (bfd_link_dll (info) && !bfd_link_pie (info) |
2061 | && (r_type == R_ARC_TLS_LE_32 || r_type == R_ARC_TLS_LE_S9)) | |
2062 | { | |
2063 | const char *name; | |
2064 | if (h) | |
2065 | name = h->root.root.string; | |
2066 | else | |
2067 | /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */ | |
2068 | name = "UNKNOWN"; | |
2069 | _bfd_error_handler | |
2070 | /* xgettext:c-format */ | |
2071 | (_("%pB: relocation %s against `%s' can not be used" | |
2072 | " when making a shared object; recompile with -fPIC"), | |
2073 | abfd, | |
2074 | arc_elf_howto (r_type)->name, | |
2075 | name); | |
2076 | bfd_set_error (bfd_error_bad_value); | |
2077 | return FALSE; | |
2078 | } | |
e3d1d408 CM |
2079 | if (! _bfd_elf_create_got_section (dynobj, info)) |
2080 | return FALSE; | |
2081 | ||
08759e0f CM |
2082 | arc_fill_got_info_for_reloc ( |
2083 | arc_got_entry_type_for_reloc (howto), | |
2084 | get_got_entry_list_for_symbol (abfd, r_symndx, h), | |
2085 | info, | |
2086 | h); | |
34e967a5 MC |
2087 | } |
2088 | } | |
886a2506 | 2089 | |
34e967a5 MC |
2090 | return TRUE; |
2091 | } | |
886a2506 | 2092 | |
34e967a5 | 2093 | #define ELF_DYNAMIC_INTERPRETER "/sbin/ld-uClibc.so" |
886a2506 | 2094 | |
34e967a5 MC |
2095 | static struct plt_version_t * |
2096 | arc_get_plt_version (struct bfd_link_info *info) | |
886a2506 | 2097 | { |
34e967a5 | 2098 | int i; |
886a2506 | 2099 | |
34e967a5 MC |
2100 | for (i = 0; i < 1; i++) |
2101 | { | |
2102 | ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i, | |
f7e8b360 NC |
2103 | (int) plt_versions[i].entry_size, |
2104 | (int) plt_versions[i].elem_size); | |
34e967a5 | 2105 | } |
886a2506 | 2106 | |
34e967a5 | 2107 | if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2) |
886a2506 | 2108 | { |
34e967a5 MC |
2109 | if (bfd_link_pic (info)) |
2110 | return &(plt_versions[ELF_ARCV2_PIC]); | |
2111 | else | |
2112 | return &(plt_versions[ELF_ARCV2_ABS]); | |
2113 | } | |
2114 | else | |
886a2506 | 2115 | { |
34e967a5 MC |
2116 | if (bfd_link_pic (info)) |
2117 | return &(plt_versions[ELF_ARC_PIC]); | |
2118 | else | |
2119 | return &(plt_versions[ELF_ARC_ABS]); | |
886a2506 | 2120 | } |
886a2506 NC |
2121 | } |
2122 | ||
2123 | static bfd_vma | |
2124 | add_symbol_to_plt (struct bfd_link_info *info) | |
2125 | { | |
34e967a5 | 2126 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 NC |
2127 | bfd_vma ret; |
2128 | ||
34e967a5 | 2129 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
886a2506 | 2130 | |
34e967a5 MC |
2131 | /* If this is the first .plt entry, make room for the special first |
2132 | entry. */ | |
2133 | if (htab->splt->size == 0) | |
2134 | htab->splt->size += plt_data->entry_size; | |
886a2506 | 2135 | |
34e967a5 MC |
2136 | ret = htab->splt->size; |
2137 | ||
2138 | htab->splt->size += plt_data->elem_size; | |
f7e8b360 | 2139 | ARC_DEBUG ("PLT_SIZE = %d\n", (int) htab->splt->size); |
34e967a5 MC |
2140 | |
2141 | htab->sgotplt->size += 4; | |
2142 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
886a2506 NC |
2143 | |
2144 | return ret; | |
2145 | } | |
2146 | ||
34e967a5 MC |
2147 | #define PLT_DO_RELOCS_FOR_ENTRY(ABFD, DS, RELOCS) \ |
2148 | plt_do_relocs_for_symbol (ABFD, DS, RELOCS, 0, 0) | |
886a2506 NC |
2149 | |
2150 | static void | |
34e967a5 MC |
2151 | plt_do_relocs_for_symbol (bfd *abfd, |
2152 | struct elf_link_hash_table *htab, | |
2153 | const struct plt_reloc *reloc, | |
886a2506 NC |
2154 | bfd_vma plt_offset, |
2155 | bfd_vma symbol_got_offset) | |
2156 | { | |
2157 | while (SYM_ONLY (reloc->symbol) != LAST_RELOC) | |
2158 | { | |
2159 | bfd_vma relocation = 0; | |
2160 | ||
2161 | switch (SYM_ONLY (reloc->symbol)) | |
2162 | { | |
2163 | case SGOT: | |
08759e0f CM |
2164 | relocation |
2165 | = htab->sgotplt->output_section->vma | |
2166 | + htab->sgotplt->output_offset + symbol_got_offset; | |
886a2506 NC |
2167 | break; |
2168 | } | |
2169 | relocation += reloc->addend; | |
2170 | ||
34e967a5 MC |
2171 | if (IS_RELATIVE (reloc->symbol)) |
2172 | { | |
2173 | bfd_vma reloc_offset = reloc->offset; | |
2174 | reloc_offset -= (IS_INSN_32 (reloc->symbol)) ? 4 : 0; | |
2175 | reloc_offset -= (IS_INSN_24 (reloc->symbol)) ? 2 : 0; | |
886a2506 | 2176 | |
34e967a5 MC |
2177 | relocation -= htab->splt->output_section->vma |
2178 | + htab->splt->output_offset | |
2179 | + plt_offset + reloc_offset; | |
2180 | } | |
2181 | ||
2182 | /* TODO: being ME is not a property of the relocation but of the | |
2183 | section of which is applying the relocation. */ | |
1e5885b7 | 2184 | if (IS_MIDDLE_ENDIAN (reloc->symbol) && !bfd_big_endian (abfd)) |
886a2506 | 2185 | { |
08759e0f CM |
2186 | relocation |
2187 | = ((relocation & 0xffff0000) >> 16) | |
2188 | | ((relocation & 0xffff) << 16); | |
886a2506 NC |
2189 | } |
2190 | ||
2191 | switch (reloc->size) | |
2192 | { | |
2193 | case 32: | |
34e967a5 | 2194 | bfd_put_32 (htab->splt->output_section->owner, |
886a2506 | 2195 | relocation, |
34e967a5 | 2196 | htab->splt->contents + plt_offset + reloc->offset); |
886a2506 NC |
2197 | break; |
2198 | } | |
2199 | ||
34e967a5 | 2200 | reloc = &(reloc[1]); /* Jump to next relocation. */ |
886a2506 NC |
2201 | } |
2202 | } | |
2203 | ||
2204 | static void | |
34e967a5 MC |
2205 | relocate_plt_for_symbol (bfd *output_bfd, |
2206 | struct bfd_link_info *info, | |
886a2506 NC |
2207 | struct elf_link_hash_entry *h) |
2208 | { | |
34e967a5 MC |
2209 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
2210 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
886a2506 | 2211 | |
34e967a5 MC |
2212 | bfd_vma plt_index = (h->plt.offset - plt_data->entry_size) |
2213 | / plt_data->elem_size; | |
886a2506 NC |
2214 | bfd_vma got_offset = (plt_index + 3) * 4; |
2215 | ||
f7e8b360 NC |
2216 | ARC_DEBUG ("arc_info: PLT_OFFSET = %#lx, PLT_ENTRY_VMA = %#lx, \ |
2217 | GOT_ENTRY_OFFSET = %#lx, GOT_ENTRY_VMA = %#lx, for symbol %s\n", | |
2218 | (long) h->plt.offset, | |
2219 | (long) (htab->splt->output_section->vma | |
2220 | + htab->splt->output_offset | |
2221 | + h->plt.offset), | |
2222 | (long) got_offset, | |
2223 | (long) (htab->sgotplt->output_section->vma | |
2224 | + htab->sgotplt->output_offset | |
2225 | + got_offset), | |
34e967a5 MC |
2226 | h->root.root.string); |
2227 | ||
1e5885b7 CZ |
2228 | { |
2229 | bfd_vma i = 0; | |
2230 | uint16_t *ptr = (uint16_t *) plt_data->elem; | |
f7e8b360 | 2231 | |
1e5885b7 CZ |
2232 | for (i = 0; i < plt_data->elem_size/2; i++) |
2233 | { | |
2234 | uint16_t data = ptr[i]; | |
2235 | bfd_put_16 (output_bfd, | |
2236 | (bfd_vma) data, | |
2237 | htab->splt->contents + h->plt.offset + (i*2)); | |
2238 | } | |
2239 | } | |
2240 | ||
34e967a5 MC |
2241 | plt_do_relocs_for_symbol (output_bfd, htab, |
2242 | plt_data->elem_relocs, | |
2243 | h->plt.offset, | |
886a2506 | 2244 | got_offset); |
34e967a5 MC |
2245 | |
2246 | /* Fill in the entry in the global offset table. */ | |
2247 | bfd_put_32 (output_bfd, | |
2248 | (bfd_vma) (htab->splt->output_section->vma | |
2249 | + htab->splt->output_offset), | |
2250 | htab->sgotplt->contents + got_offset); | |
2251 | ||
2252 | /* TODO: Fill in the entry in the .rela.plt section. */ | |
2253 | { | |
2254 | Elf_Internal_Rela rel; | |
2255 | bfd_byte *loc; | |
2256 | ||
2257 | rel.r_offset = (htab->sgotplt->output_section->vma | |
2258 | + htab->sgotplt->output_offset | |
2259 | + got_offset); | |
2260 | rel.r_addend = 0; | |
94e5c971 CZ |
2261 | |
2262 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
2263 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT); |
2264 | ||
2265 | loc = htab->srelplt->contents; | |
2266 | loc += plt_index * sizeof (Elf32_External_Rela); /* relA */ | |
2267 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); | |
2268 | } | |
886a2506 NC |
2269 | } |
2270 | ||
2271 | static void | |
34e967a5 MC |
2272 | relocate_plt_for_entry (bfd *abfd, |
2273 | struct bfd_link_info *info) | |
886a2506 | 2274 | { |
34e967a5 MC |
2275 | struct plt_version_t *plt_data = arc_get_plt_version (info); |
2276 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
886a2506 | 2277 | |
1e5885b7 CZ |
2278 | { |
2279 | bfd_vma i = 0; | |
2280 | uint16_t *ptr = (uint16_t *) plt_data->entry; | |
2281 | for (i = 0; i < plt_data->entry_size/2; i++) | |
2282 | { | |
2283 | uint16_t data = ptr[i]; | |
2284 | bfd_put_16 (abfd, | |
2285 | (bfd_vma) data, | |
2286 | htab->splt->contents + (i*2)); | |
2287 | } | |
2288 | } | |
34e967a5 | 2289 | PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs); |
886a2506 NC |
2290 | } |
2291 | ||
34e967a5 MC |
2292 | /* Desc : Adjust a symbol defined by a dynamic object and referenced |
2293 | by a regular object. The current definition is in some section of | |
2294 | the dynamic object, but we're not including those sections. We | |
2295 | have to change the definition to something the rest of the link can | |
886a2506 NC |
2296 | understand. */ |
2297 | ||
2298 | static bfd_boolean | |
2299 | elf_arc_adjust_dynamic_symbol (struct bfd_link_info *info, | |
2300 | struct elf_link_hash_entry *h) | |
2301 | { | |
34e967a5 | 2302 | asection *s; |
886a2506 | 2303 | bfd *dynobj = (elf_hash_table (info))->dynobj; |
34e967a5 | 2304 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2305 | |
34e967a5 MC |
2306 | if (h->type == STT_FUNC |
2307 | || h->type == STT_GNU_IFUNC | |
2308 | || h->needs_plt == 1) | |
886a2506 NC |
2309 | { |
2310 | if (!bfd_link_pic (info) && !h->def_dynamic && !h->ref_dynamic) | |
2311 | { | |
2312 | /* This case can occur if we saw a PLT32 reloc in an input | |
2313 | file, but the symbol was never referred to by a dynamic | |
2314 | object. In such a case, we don't actually need to build | |
2315 | a procedure linkage table, and we can just do a PC32 | |
2316 | reloc instead. */ | |
2317 | BFD_ASSERT (h->needs_plt); | |
2318 | return TRUE; | |
2319 | } | |
2320 | ||
2321 | /* Make sure this symbol is output as a dynamic symbol. */ | |
2322 | if (h->dynindx == -1 && !h->forced_local | |
2323 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
2324 | return FALSE; | |
2325 | ||
34e967a5 MC |
2326 | if (bfd_link_pic (info) |
2327 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
886a2506 NC |
2328 | { |
2329 | bfd_vma loc = add_symbol_to_plt (info); | |
2330 | ||
08759e0f | 2331 | if (bfd_link_executable (info) && !h->def_regular) |
886a2506 | 2332 | { |
34e967a5 | 2333 | h->root.u.def.section = htab->splt; |
886a2506 NC |
2334 | h->root.u.def.value = loc; |
2335 | } | |
2336 | h->plt.offset = loc; | |
2337 | } | |
34e967a5 MC |
2338 | else |
2339 | { | |
2340 | h->plt.offset = (bfd_vma) -1; | |
2341 | h->needs_plt = 0; | |
2342 | } | |
2343 | return TRUE; | |
886a2506 | 2344 | } |
34e967a5 MC |
2345 | |
2346 | /* If this is a weak symbol, and there is a real definition, the | |
2347 | processor independent code will have arranged for us to see the | |
2348 | real definition first, and we can just use the same value. */ | |
60d67dc8 | 2349 | if (h->is_weakalias) |
886a2506 | 2350 | { |
60d67dc8 AM |
2351 | struct elf_link_hash_entry *def = weakdef (h); |
2352 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
2353 | h->root.u.def.section = def->root.u.def.section; | |
2354 | h->root.u.def.value = def->root.u.def.value; | |
34e967a5 | 2355 | return TRUE; |
886a2506 NC |
2356 | } |
2357 | ||
34e967a5 MC |
2358 | /* This is a reference to a symbol defined by a dynamic object which |
2359 | is not a function. */ | |
2360 | ||
2361 | /* If we are creating a shared library, we must presume that the | |
2362 | only references to the symbol are via the global offset table. | |
2363 | For such cases we need not do anything here; the relocations will | |
2364 | be handled correctly by relocate_section. */ | |
3c8adaca CZ |
2365 | if (!bfd_link_executable (info)) |
2366 | return TRUE; | |
2367 | ||
2368 | /* If there are no non-GOT references, we do not need a copy | |
2369 | relocation. */ | |
2370 | if (!h->non_got_ref) | |
34e967a5 MC |
2371 | return TRUE; |
2372 | ||
3c8adaca CZ |
2373 | /* If -z nocopyreloc was given, we won't generate them either. */ |
2374 | if (info->nocopyreloc) | |
2375 | { | |
2376 | h->non_got_ref = 0; | |
2377 | return TRUE; | |
2378 | } | |
2379 | ||
34e967a5 MC |
2380 | /* We must allocate the symbol in our .dynbss section, which will |
2381 | become part of the .bss section of the executable. There will be | |
2382 | an entry for this symbol in the .dynsym section. The dynamic | |
2383 | object will contain position independent code, so all references | |
2384 | from the dynamic object to this symbol will go through the global | |
2385 | offset table. The dynamic linker will use the .dynsym entry to | |
2386 | determine the address it must put in the global offset table, so | |
2387 | both the dynamic object and the regular object will refer to the | |
2388 | same memory location for the variable. */ | |
2389 | ||
3c8adaca CZ |
2390 | if (htab == NULL) |
2391 | return FALSE; | |
34e967a5 MC |
2392 | |
2393 | /* We must generate a R_ARC_COPY reloc to tell the dynamic linker to | |
2394 | copy the initial value out of the dynamic object and into the | |
2395 | runtime process image. We need to remember the offset into the | |
2396 | .rela.bss section we are going to use. */ | |
2397 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) | |
2398 | { | |
8a36df4d | 2399 | struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info); |
34e967a5 | 2400 | |
9d19e4fd AM |
2401 | BFD_ASSERT (arc_htab->elf.srelbss != NULL); |
2402 | arc_htab->elf.srelbss->size += sizeof (Elf32_External_Rela); | |
34e967a5 MC |
2403 | h->needs_copy = 1; |
2404 | } | |
2405 | ||
8a36df4d | 2406 | /* TODO: Move this also to arc_hash_table. */ |
3c8adaca CZ |
2407 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
2408 | BFD_ASSERT (s != NULL); | |
34e967a5 | 2409 | |
3c8adaca | 2410 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
886a2506 NC |
2411 | } |
2412 | ||
2413 | /* Function : elf_arc_finish_dynamic_symbol | |
2414 | Brief : Finish up dynamic symbol handling. We set the | |
34e967a5 | 2415 | contents of various dynamic sections here. |
886a2506 | 2416 | Args : output_bfd : |
34e967a5 MC |
2417 | info : |
2418 | h : | |
2419 | sym : | |
886a2506 | 2420 | Returns : True/False as the return status. */ |
34e967a5 | 2421 | |
886a2506 NC |
2422 | static bfd_boolean |
2423 | elf_arc_finish_dynamic_symbol (bfd * output_bfd, | |
2424 | struct bfd_link_info *info, | |
2425 | struct elf_link_hash_entry *h, | |
2426 | Elf_Internal_Sym * sym) | |
2427 | { | |
34e967a5 | 2428 | if (h->plt.offset != (bfd_vma) -1) |
886a2506 | 2429 | { |
34e967a5 MC |
2430 | relocate_plt_for_symbol (output_bfd, info, h); |
2431 | ||
2432 | if (!h->def_regular) | |
886a2506 | 2433 | { |
34e967a5 MC |
2434 | /* Mark the symbol as undefined, rather than as defined in |
2435 | the .plt section. Leave the value alone. */ | |
2436 | sym->st_shndx = SHN_UNDEF; | |
886a2506 | 2437 | } |
34e967a5 MC |
2438 | } |
2439 | ||
34e967a5 | 2440 | |
08759e0f CM |
2441 | /* This function traverses list of GOT entries and |
2442 | create respective dynamic relocs. */ | |
2443 | /* TODO: Make function to get list and not access the list directly. */ | |
2444 | /* TODO: Move function to relocate_section create this relocs eagerly. */ | |
854b8506 CM |
2445 | struct elf_arc_link_hash_entry *ah = |
2446 | (struct elf_arc_link_hash_entry *) h; | |
2447 | create_got_dynrelocs_for_got_info (&ah->got_ents, | |
08759e0f CM |
2448 | output_bfd, |
2449 | info, | |
2450 | h); | |
34e967a5 MC |
2451 | |
2452 | if (h->needs_copy) | |
2453 | { | |
8a36df4d CM |
2454 | struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info); |
2455 | ||
c834917f CM |
2456 | if (arc_htab == NULL) |
2457 | return FALSE; | |
2458 | ||
8a36df4d CM |
2459 | if (h->dynindx == -1 |
2460 | || (h->root.type != bfd_link_hash_defined | |
2461 | && h->root.type != bfd_link_hash_defweak) | |
9d19e4fd | 2462 | || arc_htab->elf.srelbss == NULL) |
8a36df4d CM |
2463 | abort (); |
2464 | ||
34e967a5 MC |
2465 | bfd_vma rel_offset = (h->root.u.def.value |
2466 | + h->root.u.def.section->output_section->vma | |
2467 | + h->root.u.def.section->output_offset); | |
2468 | ||
9d19e4fd AM |
2469 | bfd_byte * loc = arc_htab->elf.srelbss->contents |
2470 | + (arc_htab->elf.srelbss->reloc_count * sizeof (Elf32_External_Rela)); | |
2471 | arc_htab->elf.srelbss->reloc_count++; | |
34e967a5 MC |
2472 | |
2473 | Elf_Internal_Rela rel; | |
2474 | rel.r_addend = 0; | |
2475 | rel.r_offset = rel_offset; | |
94e5c971 CZ |
2476 | |
2477 | BFD_ASSERT (h->dynindx != -1); | |
34e967a5 MC |
2478 | rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY); |
2479 | ||
23a42089 | 2480 | bfd_elf32_swap_reloca_out (output_bfd, &rel, loc); |
886a2506 NC |
2481 | } |
2482 | ||
2483 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ | |
2484 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 | |
2485 | || strcmp (h->root.root.string, "__DYNAMIC") == 0 | |
2486 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) | |
2487 | sym->st_shndx = SHN_ABS; | |
2488 | ||
2489 | return TRUE; | |
2490 | } | |
2491 | ||
4ade44b7 | 2492 | #define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION) \ |
34e967a5 MC |
2493 | case TAG: \ |
2494 | if (SYMBOL != NULL) \ | |
4ade44b7 AM |
2495 | h = elf_link_hash_lookup (elf_hash_table (info), \ |
2496 | SYMBOL, FALSE, FALSE, TRUE); \ | |
34e967a5 | 2497 | else if (SECTION != NULL) \ |
4ade44b7 | 2498 | s = bfd_get_linker_section (dynobj, SECTION); \ |
34e967a5 | 2499 | break; |
886a2506 | 2500 | |
d07b621f CM |
2501 | |
2502 | struct obfd_info_group { | |
2503 | bfd *output_bfd; | |
2504 | struct bfd_link_info *info; | |
2505 | }; | |
2506 | ||
2507 | static bfd_boolean | |
2508 | arc_create_forced_local_got_entries_for_tls (struct bfd_hash_entry *bh, | |
2509 | void *data) | |
2510 | { | |
2511 | struct elf_arc_link_hash_entry * h = | |
2512 | (struct elf_arc_link_hash_entry *) bh; | |
2513 | struct obfd_info_group *tmp = (struct obfd_info_group *) data; | |
2514 | ||
2515 | if (h->got_ents != NULL) | |
2516 | { | |
2517 | BFD_ASSERT (h); | |
2518 | ||
2519 | struct got_entry *list = h->got_ents; | |
2520 | ||
2521 | while (list != NULL) | |
2522 | { | |
2523 | create_got_dynrelocs_for_single_entry (list, tmp->output_bfd, | |
20b233dc CM |
2524 | tmp->info, |
2525 | (struct elf_link_hash_entry *) h); | |
d07b621f CM |
2526 | list = list->next; |
2527 | } | |
2528 | } | |
2529 | ||
2530 | return TRUE; | |
2531 | } | |
2532 | ||
2533 | ||
886a2506 NC |
2534 | /* Function : elf_arc_finish_dynamic_sections |
2535 | Brief : Finish up the dynamic sections handling. | |
2536 | Args : output_bfd : | |
34e967a5 MC |
2537 | info : |
2538 | h : | |
2539 | sym : | |
886a2506 | 2540 | Returns : True/False as the return status. */ |
34e967a5 | 2541 | |
886a2506 | 2542 | static bfd_boolean |
34e967a5 MC |
2543 | elf_arc_finish_dynamic_sections (bfd * output_bfd, |
2544 | struct bfd_link_info *info) | |
886a2506 | 2545 | { |
34e967a5 | 2546 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2547 | bfd *dynobj = (elf_hash_table (info))->dynobj; |
034fed0b | 2548 | asection *sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
886a2506 | 2549 | |
034fed0b | 2550 | if (sdyn) |
886a2506 NC |
2551 | { |
2552 | Elf32_External_Dyn *dyncon, *dynconend; | |
2553 | ||
034fed0b | 2554 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
08759e0f | 2555 | dynconend |
034fed0b | 2556 | = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
886a2506 NC |
2557 | for (; dyncon < dynconend; dyncon++) |
2558 | { | |
2559 | Elf_Internal_Dyn internal_dyn; | |
2560 | bfd_boolean do_it = FALSE; | |
2561 | ||
2562 | struct elf_link_hash_entry *h = NULL; | |
2563 | asection *s = NULL; | |
2564 | ||
2565 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &internal_dyn); | |
2566 | ||
2567 | switch (internal_dyn.d_tag) | |
2568 | { | |
65b94e90 CM |
2569 | GET_SYMBOL_OR_SECTION (DT_INIT, info->init_function, NULL) |
2570 | GET_SYMBOL_OR_SECTION (DT_FINI, info->fini_function, NULL) | |
4ade44b7 AM |
2571 | GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt") |
2572 | GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt") | |
2573 | GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt") | |
4ade44b7 AM |
2574 | GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version") |
2575 | GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d") | |
2576 | GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r") | |
886a2506 NC |
2577 | default: |
2578 | break; | |
2579 | } | |
2580 | ||
34e967a5 | 2581 | /* In case the dynamic symbols should be updated with a symbol. */ |
886a2506 NC |
2582 | if (h != NULL |
2583 | && (h->root.type == bfd_link_hash_defined | |
34e967a5 | 2584 | || h->root.type == bfd_link_hash_defweak)) |
886a2506 NC |
2585 | { |
2586 | asection *asec_ptr; | |
2587 | ||
2588 | internal_dyn.d_un.d_val = h->root.u.def.value; | |
2589 | asec_ptr = h->root.u.def.section; | |
2590 | if (asec_ptr->output_section != NULL) | |
2591 | { | |
2592 | internal_dyn.d_un.d_val += | |
08759e0f CM |
2593 | (asec_ptr->output_section->vma |
2594 | + asec_ptr->output_offset); | |
886a2506 NC |
2595 | } |
2596 | else | |
2597 | { | |
34e967a5 MC |
2598 | /* The symbol is imported from another shared |
2599 | library and does not apply to this one. */ | |
886a2506 NC |
2600 | internal_dyn.d_un.d_val = 0; |
2601 | } | |
2602 | do_it = TRUE; | |
2603 | } | |
2604 | else if (s != NULL) /* With a section information. */ | |
2605 | { | |
2606 | switch (internal_dyn.d_tag) | |
2607 | { | |
2608 | case DT_PLTGOT: | |
2609 | case DT_JMPREL: | |
34e967a5 MC |
2610 | case DT_VERSYM: |
2611 | case DT_VERDEF: | |
2612 | case DT_VERNEED: | |
4ade44b7 AM |
2613 | internal_dyn.d_un.d_ptr = (s->output_section->vma |
2614 | + s->output_offset); | |
886a2506 NC |
2615 | do_it = TRUE; |
2616 | break; | |
2617 | ||
2618 | case DT_PLTRELSZ: | |
2619 | internal_dyn.d_un.d_val = s->size; | |
2620 | do_it = TRUE; | |
2621 | break; | |
2622 | ||
886a2506 NC |
2623 | default: |
2624 | break; | |
2625 | } | |
2626 | } | |
2627 | ||
4ade44b7 | 2628 | if (do_it) |
886a2506 NC |
2629 | bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon); |
2630 | } | |
2631 | ||
34e967a5 | 2632 | if (htab->splt->size > 0) |
886a2506 | 2633 | { |
34e967a5 | 2634 | relocate_plt_for_entry (output_bfd, info); |
886a2506 NC |
2635 | } |
2636 | ||
34e967a5 | 2637 | /* TODO: Validate this. */ |
034fed0b AM |
2638 | if (htab->srelplt->output_section != bfd_abs_section_ptr) |
2639 | elf_section_data (htab->srelplt->output_section) | |
2640 | ->this_hdr.sh_entsize = 12; | |
886a2506 NC |
2641 | } |
2642 | ||
2643 | /* Fill in the first three entries in the global offset table. */ | |
34e967a5 | 2644 | if (htab->sgot) |
886a2506 | 2645 | { |
3b63d2ce CM |
2646 | struct elf_link_hash_entry *h; |
2647 | h = elf_link_hash_lookup (elf_hash_table (info), "_GLOBAL_OFFSET_TABLE_", | |
2648 | FALSE, FALSE, TRUE); | |
2649 | ||
2650 | if (h != NULL && h->root.type != bfd_link_hash_undefined | |
2651 | && h->root.u.def.section != NULL) | |
886a2506 | 2652 | { |
3b63d2ce CM |
2653 | asection *sec = h->root.u.def.section; |
2654 | ||
034fed0b | 2655 | if (sdyn == NULL) |
886a2506 | 2656 | bfd_put_32 (output_bfd, (bfd_vma) 0, |
3b63d2ce | 2657 | sec->contents); |
886a2506 NC |
2658 | else |
2659 | bfd_put_32 (output_bfd, | |
034fed0b | 2660 | sdyn->output_section->vma + sdyn->output_offset, |
3b63d2ce CM |
2661 | sec->contents); |
2662 | bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 4); | |
2663 | bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 8); | |
886a2506 NC |
2664 | } |
2665 | } | |
2666 | ||
d07b621f CM |
2667 | struct obfd_info_group group; |
2668 | group.output_bfd = output_bfd; | |
2669 | group.info = info; | |
2670 | bfd_hash_traverse (&info->hash->table, | |
2671 | arc_create_forced_local_got_entries_for_tls, &group); | |
2672 | ||
886a2506 NC |
2673 | return TRUE; |
2674 | } | |
2675 | ||
34e967a5 MC |
2676 | #define ADD_DYNAMIC_SYMBOL(NAME, TAG) \ |
2677 | h = elf_link_hash_lookup (elf_hash_table (info), \ | |
2678 | NAME, FALSE, FALSE, FALSE); \ | |
2679 | if ((h != NULL && (h->ref_regular || h->def_regular))) \ | |
2680 | if (! _bfd_elf_add_dynamic_entry (info, TAG, 0)) \ | |
886a2506 NC |
2681 | return FALSE; |
2682 | ||
2683 | /* Set the sizes of the dynamic sections. */ | |
2684 | static bfd_boolean | |
034fed0b | 2685 | elf_arc_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
34e967a5 | 2686 | struct bfd_link_info *info) |
886a2506 | 2687 | { |
034fed0b AM |
2688 | bfd *dynobj; |
2689 | asection *s; | |
2690 | bfd_boolean relocs_exist = FALSE; | |
2691 | bfd_boolean reltext_exist = FALSE; | |
34e967a5 | 2692 | struct elf_link_hash_table *htab = elf_hash_table (info); |
886a2506 | 2693 | |
034fed0b | 2694 | dynobj = htab->dynobj; |
886a2506 NC |
2695 | BFD_ASSERT (dynobj != NULL); |
2696 | ||
034fed0b | 2697 | if (htab->dynamic_sections_created) |
886a2506 NC |
2698 | { |
2699 | struct elf_link_hash_entry *h; | |
2700 | ||
34e967a5 MC |
2701 | /* Set the contents of the .interp section to the |
2702 | interpreter. */ | |
034fed0b | 2703 | if (bfd_link_executable (info) && !info->nointerp) |
886a2506 NC |
2704 | { |
2705 | s = bfd_get_section_by_name (dynobj, ".interp"); | |
2706 | BFD_ASSERT (s != NULL); | |
34e967a5 | 2707 | s->size = sizeof (ELF_DYNAMIC_INTERPRETER); |
886a2506 NC |
2708 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
2709 | } | |
2710 | ||
34e967a5 MC |
2711 | /* Add some entries to the .dynamic section. We fill in some of |
2712 | the values later, in elf_bfd_final_link, but we must add the | |
2713 | entries now so that we know the final size of the .dynamic | |
2714 | section. Checking if the .init section is present. We also | |
2715 | create DT_INIT and DT_FINI entries if the init_str has been | |
2716 | changed by the user. */ | |
65b94e90 CM |
2717 | ADD_DYNAMIC_SYMBOL (info->init_function, DT_INIT); |
2718 | ADD_DYNAMIC_SYMBOL (info->fini_function, DT_FINI); | |
886a2506 NC |
2719 | } |
2720 | else | |
2721 | { | |
34e967a5 MC |
2722 | /* We may have created entries in the .rela.got section. |
2723 | However, if we are not creating the dynamic sections, we will | |
2724 | not actually use these entries. Reset the size of .rela.got, | |
2725 | which will cause it to get stripped from the output file | |
2726 | below. */ | |
2727 | if (htab->srelgot != NULL) | |
2728 | htab->srelgot->size = 0; | |
886a2506 NC |
2729 | } |
2730 | ||
2731 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2732 | { | |
34e967a5 | 2733 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
886a2506 NC |
2734 | continue; |
2735 | ||
034fed0b AM |
2736 | if (s == htab->splt |
2737 | || s == htab->sgot | |
2738 | || s == htab->sgotplt | |
2739 | || s == htab->sdynbss) | |
886a2506 | 2740 | { |
034fed0b AM |
2741 | /* Strip this section if we don't need it. */ |
2742 | } | |
2743 | else if (strncmp (s->name, ".rela", 5) == 0) | |
2744 | { | |
2745 | if (s->size != 0 && s != htab->srelplt) | |
34e967a5 | 2746 | { |
034fed0b | 2747 | if (!reltext_exist) |
34e967a5 | 2748 | { |
034fed0b AM |
2749 | const char *name = s->name + 5; |
2750 | bfd *ibfd; | |
2751 | for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next) | |
64aa8e03 CM |
2752 | if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour |
2753 | && ibfd->flags & DYNAMIC) | |
034fed0b AM |
2754 | { |
2755 | asection *target = bfd_get_section_by_name (ibfd, name); | |
2756 | if (target != NULL | |
2757 | && elf_section_data (target)->sreloc == s | |
2758 | && ((target->output_section->flags | |
2759 | & (SEC_READONLY | SEC_ALLOC)) | |
2760 | == (SEC_READONLY | SEC_ALLOC))) | |
2761 | { | |
2762 | reltext_exist = TRUE; | |
2763 | break; | |
2764 | } | |
2765 | } | |
34e967a5 | 2766 | } |
034fed0b | 2767 | relocs_exist = TRUE; |
34e967a5 | 2768 | } |
886a2506 | 2769 | |
34e967a5 MC |
2770 | /* We use the reloc_count field as a counter if we need to |
2771 | copy relocs into the output file. */ | |
2772 | s->reloc_count = 0; | |
886a2506 | 2773 | } |
034fed0b AM |
2774 | else |
2775 | { | |
2776 | /* It's not one of our sections, so don't allocate space. */ | |
2777 | continue; | |
2778 | } | |
34e967a5 | 2779 | |
034fed0b AM |
2780 | if (s->size == 0) |
2781 | { | |
2782 | s->flags |= SEC_EXCLUDE; | |
2783 | continue; | |
2784 | } | |
34e967a5 | 2785 | |
034fed0b AM |
2786 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
2787 | continue; | |
34e967a5 | 2788 | |
034fed0b AM |
2789 | /* Allocate memory for the section contents. */ |
2790 | s->contents = bfd_zalloc (dynobj, s->size); | |
2791 | if (s->contents == NULL) | |
34e967a5 | 2792 | return FALSE; |
886a2506 NC |
2793 | } |
2794 | ||
034fed0b | 2795 | if (htab->dynamic_sections_created) |
886a2506 | 2796 | { |
34e967a5 MC |
2797 | /* TODO: Check if this is needed. */ |
2798 | if (!bfd_link_pic (info)) | |
2799 | if (!_bfd_elf_add_dynamic_entry (info, DT_DEBUG, 0)) | |
2800 | return FALSE; | |
2801 | ||
2802 | if (htab->splt && (htab->splt->flags & SEC_EXCLUDE) == 0) | |
886a2506 NC |
2803 | if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0) |
2804 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0) | |
2805 | || !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA) | |
034fed0b | 2806 | || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)) |
886a2506 NC |
2807 | return FALSE; |
2808 | ||
034fed0b | 2809 | if (relocs_exist) |
886a2506 NC |
2810 | if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0) |
2811 | || !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0) | |
2ab2f40d | 2812 | || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT, |
034fed0b | 2813 | sizeof (Elf32_External_Rela))) |
886a2506 NC |
2814 | return FALSE; |
2815 | ||
034fed0b | 2816 | if (reltext_exist) |
886a2506 NC |
2817 | if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0)) |
2818 | return FALSE; | |
2819 | } | |
2820 | ||
2821 | return TRUE; | |
2822 | } | |
2823 | ||
0f7f3789 CM |
2824 | |
2825 | /* Classify dynamic relocs such that -z combreloc can reorder and combine | |
2826 | them. */ | |
2827 | static enum elf_reloc_type_class | |
2828 | elf32_arc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
2829 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
2830 | const Elf_Internal_Rela *rela) | |
2831 | { | |
2832 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
2833 | { | |
2834 | case R_ARC_RELATIVE: | |
2835 | return reloc_class_relative; | |
2836 | case R_ARC_JMP_SLOT: | |
2837 | return reloc_class_plt; | |
2838 | case R_ARC_COPY: | |
2839 | return reloc_class_copy; | |
2840 | /* TODO: Needed in future to support ifunc. */ | |
2841 | /* | |
2842 | case R_ARC_IRELATIVE: | |
2843 | return reloc_class_ifunc; | |
2844 | */ | |
2845 | default: | |
2846 | return reloc_class_normal; | |
2847 | } | |
2848 | } | |
2849 | ||
34e967a5 MC |
2850 | const struct elf_size_info arc_elf32_size_info = |
2851 | { | |
2852 | sizeof (Elf32_External_Ehdr), | |
2853 | sizeof (Elf32_External_Phdr), | |
2854 | sizeof (Elf32_External_Shdr), | |
2855 | sizeof (Elf32_External_Rel), | |
2856 | sizeof (Elf32_External_Rela), | |
2857 | sizeof (Elf32_External_Sym), | |
2858 | sizeof (Elf32_External_Dyn), | |
2859 | sizeof (Elf_External_Note), | |
2860 | 4, | |
2861 | 1, | |
2862 | 32, 2, | |
2863 | ELFCLASS32, EV_CURRENT, | |
2864 | bfd_elf32_write_out_phdrs, | |
2865 | bfd_elf32_write_shdrs_and_ehdr, | |
2866 | bfd_elf32_checksum_contents, | |
2867 | bfd_elf32_write_relocs, | |
2868 | bfd_elf32_swap_symbol_in, | |
2869 | bfd_elf32_swap_symbol_out, | |
2870 | bfd_elf32_slurp_reloc_table, | |
2871 | bfd_elf32_slurp_symbol_table, | |
2872 | bfd_elf32_swap_dyn_in, | |
2873 | bfd_elf32_swap_dyn_out, | |
2874 | bfd_elf32_swap_reloc_in, | |
2875 | bfd_elf32_swap_reloc_out, | |
2876 | bfd_elf32_swap_reloca_in, | |
2877 | bfd_elf32_swap_reloca_out | |
2878 | }; | |
2879 | ||
2880 | #define elf_backend_size_info arc_elf32_size_info | |
2881 | ||
47f7f636 AK |
2882 | /* GDB expects general purpose registers to be in section .reg. However Linux |
2883 | kernel doesn't create this section and instead writes registers to NOTE | |
2884 | section. It is up to the binutils to create a pseudo-section .reg from the | |
2885 | contents of NOTE. Also BFD will read pid and signal number from NOTE. This | |
2886 | function relies on offsets inside elf_prstatus structure in Linux to be | |
2887 | stable. */ | |
2888 | ||
2889 | static bfd_boolean | |
2890 | elf32_arc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
2891 | { | |
2892 | int offset; | |
2893 | size_t size; | |
2894 | ||
2895 | switch (note->descsz) | |
2896 | { | |
2897 | default: | |
2898 | return FALSE; | |
2899 | ||
2900 | case 236: /* sizeof (struct elf_prstatus) on Linux/arc. */ | |
2901 | /* pr_cursig */ | |
2902 | elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); | |
2903 | /* pr_pid */ | |
2904 | elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24); | |
2905 | /* pr_regs */ | |
2906 | offset = 72; | |
2907 | size = (40 * 4); /* There are 40 registers in user_regs_struct. */ | |
2908 | break; | |
2909 | } | |
2910 | /* Make a ".reg/999" section. */ | |
2911 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", size, | |
2912 | note->descpos + offset); | |
2913 | } | |
2914 | ||
53a346d8 CZ |
2915 | /* Determine whether an object attribute tag takes an integer, a |
2916 | string or both. */ | |
2917 | ||
2918 | static int | |
2919 | elf32_arc_obj_attrs_arg_type (int tag) | |
2920 | { | |
2921 | if (tag == Tag_ARC_CPU_name | |
2922 | || tag == Tag_ARC_ISA_config | |
2923 | || tag == Tag_ARC_ISA_apex) | |
2924 | return ATTR_TYPE_FLAG_STR_VAL; | |
2925 | else if (tag < (Tag_ARC_ISA_mpy_option + 1)) | |
2926 | return ATTR_TYPE_FLAG_INT_VAL; | |
2927 | else | |
2928 | return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL; | |
2929 | } | |
2930 | ||
2931 | /* Attribute numbers >=14 can be safely ignored. */ | |
2932 | ||
2933 | static bfd_boolean | |
2934 | elf32_arc_obj_attrs_handle_unknown (bfd *abfd, int tag) | |
2935 | { | |
2936 | if ((tag & 127) < (Tag_ARC_ISA_mpy_option + 1)) | |
2937 | { | |
2938 | _bfd_error_handler | |
38f14ab8 | 2939 | (_("%pB: unknown mandatory ARC object attribute %d"), |
53a346d8 CZ |
2940 | abfd, tag); |
2941 | bfd_set_error (bfd_error_bad_value); | |
2942 | return FALSE; | |
2943 | } | |
2944 | else | |
2945 | { | |
2946 | _bfd_error_handler | |
38f14ab8 | 2947 | (_("warning: %pB: unknown ARC object attribute %d"), |
53a346d8 CZ |
2948 | abfd, tag); |
2949 | return TRUE; | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | /* Handle an ARC specific section when reading an object file. This is | |
2954 | called when bfd_section_from_shdr finds a section with an unknown | |
2955 | type. */ | |
2956 | ||
2957 | static bfd_boolean | |
2958 | elf32_arc_section_from_shdr (bfd *abfd, | |
2959 | Elf_Internal_Shdr * hdr, | |
2960 | const char *name, | |
2961 | int shindex) | |
2962 | { | |
2963 | switch (hdr->sh_type) | |
2964 | { | |
6af04484 | 2965 | case 0x0c: /* MWDT specific section, don't complain about it. */ |
53a346d8 CZ |
2966 | case SHT_ARC_ATTRIBUTES: |
2967 | break; | |
2968 | ||
2969 | default: | |
2970 | return FALSE; | |
2971 | } | |
2972 | ||
2973 | if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex)) | |
2974 | return FALSE; | |
2975 | ||
2976 | return TRUE; | |
2977 | } | |
2978 | ||
6d00b590 | 2979 | #define TARGET_LITTLE_SYM arc_elf32_le_vec |
47b0e7ad | 2980 | #define TARGET_LITTLE_NAME "elf32-littlearc" |
886a2506 NC |
2981 | #define TARGET_BIG_SYM arc_elf32_be_vec |
2982 | #define TARGET_BIG_NAME "elf32-bigarc" | |
2983 | #define ELF_ARCH bfd_arch_arc | |
8a36df4d | 2984 | #define ELF_TARGET_ID ARC_ELF_DATA |
886a2506 NC |
2985 | #define ELF_MACHINE_CODE EM_ARC_COMPACT |
2986 | #define ELF_MACHINE_ALT1 EM_ARC_COMPACT2 | |
2987 | #define ELF_MAXPAGESIZE 0x2000 | |
2988 | ||
34e967a5 MC |
2989 | #define bfd_elf32_bfd_link_hash_table_create arc_elf_link_hash_table_create |
2990 | ||
2991 | #define bfd_elf32_bfd_merge_private_bfd_data arc_elf_merge_private_bfd_data | |
2992 | #define bfd_elf32_bfd_reloc_type_lookup arc_elf32_bfd_reloc_type_lookup | |
2993 | #define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags | |
2994 | #define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data | |
2995 | #define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data | |
2996 | ||
886a2506 NC |
2997 | #define elf_info_to_howto_rel arc_info_to_howto_rel |
2998 | #define elf_backend_object_p arc_elf_object_p | |
2999 | #define elf_backend_final_write_processing arc_elf_final_write_processing | |
3000 | ||
3001 | #define elf_backend_relocate_section elf_arc_relocate_section | |
3002 | #define elf_backend_check_relocs elf_arc_check_relocs | |
9d19e4fd | 3003 | #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections |
886a2506 | 3004 | |
0f7f3789 CM |
3005 | #define elf_backend_reloc_type_class elf32_arc_reloc_type_class |
3006 | ||
886a2506 NC |
3007 | #define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol |
3008 | #define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol | |
3009 | ||
3010 | #define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections | |
3011 | #define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections | |
3012 | ||
3013 | #define elf_backend_can_gc_sections 1 | |
3014 | #define elf_backend_want_got_plt 1 | |
3015 | #define elf_backend_plt_readonly 1 | |
34e967a5 | 3016 | #define elf_backend_rela_plts_and_copies_p 1 |
886a2506 NC |
3017 | #define elf_backend_want_plt_sym 0 |
3018 | #define elf_backend_got_header_size 12 | |
64f52338 | 3019 | #define elf_backend_dtrel_excludes_plt 1 |
886a2506 NC |
3020 | |
3021 | #define elf_backend_may_use_rel_p 0 | |
3022 | #define elf_backend_may_use_rela_p 1 | |
3023 | #define elf_backend_default_use_rela_p 1 | |
252b5132 | 3024 | |
47f7f636 AK |
3025 | #define elf_backend_grok_prstatus elf32_arc_grok_prstatus |
3026 | ||
3c8adaca CZ |
3027 | #define elf_backend_default_execstack 0 |
3028 | ||
53a346d8 CZ |
3029 | #undef elf_backend_obj_attrs_vendor |
3030 | #define elf_backend_obj_attrs_vendor "ARC" | |
3031 | #undef elf_backend_obj_attrs_section | |
3032 | #define elf_backend_obj_attrs_section ".ARC.attributes" | |
3033 | #undef elf_backend_obj_attrs_arg_type | |
3034 | #define elf_backend_obj_attrs_arg_type elf32_arc_obj_attrs_arg_type | |
3035 | #undef elf_backend_obj_attrs_section_type | |
3036 | #define elf_backend_obj_attrs_section_type SHT_ARC_ATTRIBUTES | |
07d6d2b8 | 3037 | #define elf_backend_obj_attrs_handle_unknown elf32_arc_obj_attrs_handle_unknown |
53a346d8 | 3038 | |
07d6d2b8 | 3039 | #define elf_backend_section_from_shdr elf32_arc_section_from_shdr |
53a346d8 | 3040 | |
252b5132 | 3041 | #include "elf32-target.h" |