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e214f8db | 1 | /* LoongArch-specific support for NN-bit ELF. |
d87bef3a | 2 | Copyright (C) 2021-2023 Free Software Foundation, Inc. |
e214f8db | 3 | Contributed by Loongson Ltd. |
4 | ||
5 | This file is part of BFD, the Binary File Descriptor library. | |
6 | ||
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 | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
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. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; see the file COPYING3. If not, | |
19 | see <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #include "ansidecl.h" | |
22 | #include "sysdep.h" | |
23 | #include "bfd.h" | |
24 | #include "libbfd.h" | |
25 | #define ARCH_SIZE NN | |
26 | #include "elf-bfd.h" | |
27 | #include "objalloc.h" | |
28 | #include "elf/loongarch.h" | |
29 | #include "elfxx-loongarch.h" | |
30 | ||
31 | static bool | |
32 | loongarch_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, | |
33 | Elf_Internal_Rela *dst) | |
34 | { | |
35 | cache_ptr->howto = loongarch_elf_rtype_to_howto (abfd, | |
36 | ELFNN_R_TYPE (dst->r_info)); | |
37 | return cache_ptr->howto != NULL; | |
38 | } | |
39 | ||
40 | /* LoongArch ELF linker hash entry. */ | |
41 | struct loongarch_elf_link_hash_entry | |
42 | { | |
43 | struct elf_link_hash_entry elf; | |
44 | ||
e214f8db | 45 | #define GOT_UNKNOWN 0 |
46 | #define GOT_NORMAL 1 | |
47 | #define GOT_TLS_GD 2 | |
48 | #define GOT_TLS_IE 4 | |
49 | #define GOT_TLS_LE 8 | |
50 | char tls_type; | |
51 | }; | |
52 | ||
53 | #define loongarch_elf_hash_entry(ent) \ | |
54 | ((struct loongarch_elf_link_hash_entry *) (ent)) | |
55 | ||
56 | struct _bfd_loongarch_elf_obj_tdata | |
57 | { | |
58 | struct elf_obj_tdata root; | |
59 | ||
60 | /* The tls_type for each local got entry. */ | |
61 | char *local_got_tls_type; | |
62 | }; | |
63 | ||
64 | #define _bfd_loongarch_elf_tdata(abfd) \ | |
65 | ((struct _bfd_loongarch_elf_obj_tdata *) (abfd)->tdata.any) | |
66 | ||
67 | #define _bfd_loongarch_elf_local_got_tls_type(abfd) \ | |
68 | (_bfd_loongarch_elf_tdata (abfd)->local_got_tls_type) | |
69 | ||
70 | #define _bfd_loongarch_elf_tls_type(abfd, h, symndx) \ | |
71 | (*((h) != NULL \ | |
72 | ? &loongarch_elf_hash_entry (h)->tls_type \ | |
73 | : &_bfd_loongarch_elf_local_got_tls_type (abfd)[symndx])) | |
74 | ||
75 | #define is_loongarch_elf(bfd) \ | |
76 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
77 | && elf_tdata (bfd) != NULL \ | |
78 | && elf_object_id (bfd) == LARCH_ELF_DATA) | |
79 | ||
80 | struct loongarch_elf_link_hash_table | |
81 | { | |
82 | struct elf_link_hash_table elf; | |
83 | ||
84 | /* Short-cuts to get to dynamic linker sections. */ | |
85 | asection *sdyntdata; | |
86 | ||
87 | /* Small local sym to section mapping cache. */ | |
88 | struct sym_cache sym_cache; | |
89 | ||
90 | /* Used by local STT_GNU_IFUNC symbols. */ | |
91 | htab_t loc_hash_table; | |
92 | void *loc_hash_memory; | |
93 | ||
94 | /* The max alignment of output sections. */ | |
95 | bfd_vma max_alignment; | |
96 | }; | |
97 | ||
98 | /* Get the LoongArch ELF linker hash table from a link_info structure. */ | |
99 | #define loongarch_elf_hash_table(p) \ | |
100 | (elf_hash_table_id (elf_hash_table (p)) == LARCH_ELF_DATA \ | |
101 | ? ((struct loongarch_elf_link_hash_table *) ((p)->hash)) \ | |
102 | : NULL) | |
103 | ||
104 | #define MINUS_ONE ((bfd_vma) 0 - 1) | |
105 | ||
106 | #define sec_addr(sec) ((sec)->output_section->vma + (sec)->output_offset) | |
107 | ||
108 | #define LARCH_ELF_LOG_WORD_BYTES (ARCH_SIZE == 32 ? 2 : 3) | |
109 | #define LARCH_ELF_WORD_BYTES (1 << LARCH_ELF_LOG_WORD_BYTES) | |
110 | ||
111 | #define PLT_HEADER_INSNS 8 | |
112 | #define PLT_HEADER_SIZE (PLT_HEADER_INSNS * 4) | |
113 | ||
114 | #define PLT_ENTRY_INSNS 4 | |
115 | #define PLT_ENTRY_SIZE (PLT_ENTRY_INSNS * 4) | |
116 | ||
117 | #define GOT_ENTRY_SIZE (LARCH_ELF_WORD_BYTES) | |
118 | ||
119 | #define GOTPLT_HEADER_SIZE (GOT_ENTRY_SIZE * 2) | |
120 | ||
121 | #define elf_backend_want_got_plt 1 | |
122 | ||
123 | #define elf_backend_plt_readonly 1 | |
124 | ||
6d13722a | 125 | #define elf_backend_want_plt_sym 1 |
e214f8db | 126 | #define elf_backend_plt_alignment 4 |
127 | #define elf_backend_can_gc_sections 1 | |
6d13722a | 128 | #define elf_backend_can_refcount 1 |
e214f8db | 129 | #define elf_backend_want_got_sym 1 |
130 | ||
131 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 1) | |
132 | ||
133 | #define elf_backend_want_dynrelro 1 | |
6d13722a | 134 | #define elf_backend_rela_normal 1 |
48ca1b26 | 135 | #define elf_backend_default_execstack 0 |
e214f8db | 136 | |
137 | /* Generate a PLT header. */ | |
138 | ||
139 | static bool | |
140 | loongarch_make_plt_header (bfd_vma got_plt_addr, bfd_vma plt_header_addr, | |
141 | uint32_t *entry) | |
142 | { | |
143 | bfd_vma pcrel = got_plt_addr - plt_header_addr; | |
144 | bfd_vma hi, lo; | |
145 | ||
146 | if (pcrel + 0x80000800 > 0xffffffff) | |
147 | { | |
148 | _bfd_error_handler (_("%#" PRIx64 " invaild imm"), (uint64_t) pcrel); | |
149 | bfd_set_error (bfd_error_bad_value); | |
150 | return false; | |
151 | } | |
152 | hi = ((pcrel + 0x800) >> 12) & 0xfffff; | |
153 | lo = pcrel & 0xfff; | |
154 | ||
155 | /* pcaddu12i $t2, %hi(%pcrel(.got.plt)) | |
156 | sub.[wd] $t1, $t1, $t3 | |
157 | ld.[wd] $t3, $t2, %lo(%pcrel(.got.plt)) # _dl_runtime_resolve | |
158 | addi.[wd] $t1, $t1, -(PLT_HEADER_SIZE + 12) | |
159 | addi.[wd] $t0, $t2, %lo(%pcrel(.got.plt)) | |
160 | srli.[wd] $t1, $t1, log2(16 / GOT_ENTRY_SIZE) | |
161 | ld.[wd] $t0, $t0, GOT_ENTRY_SIZE | |
162 | jirl $r0, $t3, 0 */ | |
163 | ||
164 | if (GOT_ENTRY_SIZE == 8) | |
165 | { | |
166 | entry[0] = 0x1c00000e | (hi & 0xfffff) << 5; | |
167 | entry[1] = 0x0011bdad; | |
168 | entry[2] = 0x28c001cf | (lo & 0xfff) << 10; | |
169 | entry[3] = 0x02c001ad | ((-(PLT_HEADER_SIZE + 12)) & 0xfff) << 10; | |
170 | entry[4] = 0x02c001cc | (lo & 0xfff) << 10; | |
171 | entry[5] = 0x004501ad | (4 - LARCH_ELF_LOG_WORD_BYTES) << 10; | |
172 | entry[6] = 0x28c0018c | GOT_ENTRY_SIZE << 10; | |
173 | entry[7] = 0x4c0001e0; | |
174 | } | |
175 | else | |
176 | { | |
177 | entry[0] = 0x1c00000e | (hi & 0xfffff) << 5; | |
178 | entry[1] = 0x00113dad; | |
179 | entry[2] = 0x288001cf | (lo & 0xfff) << 10; | |
180 | entry[3] = 0x028001ad | ((-(PLT_HEADER_SIZE + 12)) & 0xfff) << 10; | |
181 | entry[4] = 0x028001cc | (lo & 0xfff) << 10; | |
182 | entry[5] = 0x004481ad | (4 - LARCH_ELF_LOG_WORD_BYTES) << 10; | |
183 | entry[6] = 0x2880018c | GOT_ENTRY_SIZE << 10; | |
184 | entry[7] = 0x4c0001e0; | |
185 | } | |
186 | return true; | |
187 | } | |
188 | ||
189 | /* Generate a PLT entry. */ | |
190 | ||
191 | static bool | |
192 | loongarch_make_plt_entry (bfd_vma got_plt_entry_addr, bfd_vma plt_entry_addr, | |
193 | uint32_t *entry) | |
194 | { | |
195 | bfd_vma pcrel = got_plt_entry_addr - plt_entry_addr; | |
196 | bfd_vma hi, lo; | |
197 | ||
198 | if (pcrel + 0x80000800 > 0xffffffff) | |
199 | { | |
200 | _bfd_error_handler (_("%#" PRIx64 " invaild imm"), (uint64_t) pcrel); | |
201 | bfd_set_error (bfd_error_bad_value); | |
202 | return false; | |
203 | } | |
204 | hi = ((pcrel + 0x800) >> 12) & 0xfffff; | |
205 | lo = pcrel & 0xfff; | |
206 | ||
207 | entry[0] = 0x1c00000f | (hi & 0xfffff) << 5; | |
208 | entry[1] = ((GOT_ENTRY_SIZE == 8 ? 0x28c001ef : 0x288001ef) | |
209 | | (lo & 0xfff) << 10); | |
210 | entry[2] = 0x4c0001ed; /* jirl $r13, $15, 0 */ | |
211 | entry[3] = 0x03400000; /* nop */ | |
212 | ||
213 | return true; | |
214 | } | |
215 | ||
216 | /* Create an entry in an LoongArch ELF linker hash table. */ | |
217 | ||
218 | static struct bfd_hash_entry * | |
219 | link_hash_newfunc (struct bfd_hash_entry *entry, struct bfd_hash_table *table, | |
220 | const char *string) | |
221 | { | |
222 | struct loongarch_elf_link_hash_entry *eh; | |
223 | ||
224 | /* Allocate the structure if it has not already been allocated by a | |
225 | subclass. */ | |
226 | if (entry == NULL) | |
227 | { | |
228 | entry = bfd_hash_allocate (table, sizeof (*eh)); | |
229 | if (entry == NULL) | |
230 | return entry; | |
231 | } | |
232 | ||
233 | /* Call the allocation method of the superclass. */ | |
234 | entry = _bfd_elf_link_hash_newfunc (entry, table, string); | |
235 | if (entry != NULL) | |
236 | { | |
237 | eh = (struct loongarch_elf_link_hash_entry *) entry; | |
e214f8db | 238 | eh->tls_type = GOT_UNKNOWN; |
239 | } | |
240 | ||
241 | return entry; | |
242 | } | |
243 | ||
244 | /* Compute a hash of a local hash entry. We use elf_link_hash_entry | |
245 | for local symbol so that we can handle local STT_GNU_IFUNC symbols | |
246 | as global symbol. We reuse indx and dynstr_index for local symbol | |
247 | hash since they aren't used by global symbols in this backend. */ | |
248 | ||
249 | static hashval_t | |
250 | elfNN_loongarch_local_htab_hash (const void *ptr) | |
251 | { | |
252 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) ptr; | |
253 | return ELF_LOCAL_SYMBOL_HASH (h->indx, h->dynstr_index); | |
254 | } | |
255 | ||
256 | /* Compare local hash entries. */ | |
257 | ||
258 | static int | |
259 | elfNN_loongarch_local_htab_eq (const void *ptr1, const void *ptr2) | |
260 | { | |
261 | struct elf_link_hash_entry *h1 = (struct elf_link_hash_entry *) ptr1; | |
262 | struct elf_link_hash_entry *h2 = (struct elf_link_hash_entry *) ptr2; | |
263 | ||
264 | return h1->indx == h2->indx && h1->dynstr_index == h2->dynstr_index; | |
265 | } | |
266 | ||
267 | /* Find and/or create a hash entry for local symbol. */ | |
268 | static struct elf_link_hash_entry * | |
269 | elfNN_loongarch_get_local_sym_hash (struct loongarch_elf_link_hash_table *htab, | |
270 | bfd *abfd, const Elf_Internal_Rela *rel, | |
271 | bool create) | |
272 | { | |
273 | struct loongarch_elf_link_hash_entry e, *ret; | |
274 | asection *sec = abfd->sections; | |
275 | hashval_t h = ELF_LOCAL_SYMBOL_HASH (sec->id, ELFNN_R_SYM (rel->r_info)); | |
276 | void **slot; | |
277 | ||
278 | e.elf.indx = sec->id; | |
279 | e.elf.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
280 | slot = htab_find_slot_with_hash (htab->loc_hash_table, &e, h, | |
281 | create ? INSERT : NO_INSERT); | |
282 | ||
283 | if (!slot) | |
284 | return NULL; | |
285 | ||
286 | if (*slot) | |
287 | { | |
288 | ret = (struct loongarch_elf_link_hash_entry *) *slot; | |
289 | return &ret->elf; | |
290 | } | |
291 | ||
292 | ret = ((struct loongarch_elf_link_hash_entry *) | |
293 | objalloc_alloc ((struct objalloc *) htab->loc_hash_memory, | |
294 | sizeof (struct loongarch_elf_link_hash_entry))); | |
295 | if (ret) | |
296 | { | |
297 | memset (ret, 0, sizeof (*ret)); | |
298 | ret->elf.indx = sec->id; | |
299 | ret->elf.pointer_equality_needed = 0; | |
300 | ret->elf.dynstr_index = ELFNN_R_SYM (rel->r_info); | |
301 | ret->elf.dynindx = -1; | |
302 | ret->elf.needs_plt = 0; | |
303 | ret->elf.plt.refcount = -1; | |
304 | ret->elf.got.refcount = -1; | |
305 | ret->elf.def_dynamic = 0; | |
306 | ret->elf.def_regular = 1; | |
307 | ret->elf.ref_dynamic = 0; /* This should be always 0 for local. */ | |
308 | ret->elf.ref_regular = 0; | |
309 | ret->elf.forced_local = 1; | |
310 | ret->elf.root.type = bfd_link_hash_defined; | |
311 | *slot = ret; | |
312 | } | |
313 | return &ret->elf; | |
314 | } | |
315 | ||
316 | /* Destroy an LoongArch elf linker hash table. */ | |
317 | ||
318 | static void | |
319 | elfNN_loongarch_link_hash_table_free (bfd *obfd) | |
320 | { | |
321 | struct loongarch_elf_link_hash_table *ret; | |
322 | ret = (struct loongarch_elf_link_hash_table *) obfd->link.hash; | |
323 | ||
324 | if (ret->loc_hash_table) | |
325 | htab_delete (ret->loc_hash_table); | |
326 | if (ret->loc_hash_memory) | |
327 | objalloc_free ((struct objalloc *) ret->loc_hash_memory); | |
328 | ||
329 | _bfd_elf_link_hash_table_free (obfd); | |
330 | } | |
331 | ||
332 | /* Create a LoongArch ELF linker hash table. */ | |
333 | ||
334 | static struct bfd_link_hash_table * | |
335 | loongarch_elf_link_hash_table_create (bfd *abfd) | |
336 | { | |
337 | struct loongarch_elf_link_hash_table *ret; | |
338 | bfd_size_type amt = sizeof (struct loongarch_elf_link_hash_table); | |
339 | ||
340 | ret = (struct loongarch_elf_link_hash_table *) bfd_zmalloc (amt); | |
341 | if (ret == NULL) | |
342 | return NULL; | |
343 | ||
344 | if (!_bfd_elf_link_hash_table_init | |
345 | (&ret->elf, abfd, link_hash_newfunc, | |
346 | sizeof (struct loongarch_elf_link_hash_entry), LARCH_ELF_DATA)) | |
347 | { | |
348 | free (ret); | |
349 | return NULL; | |
350 | } | |
351 | ||
352 | ret->max_alignment = MINUS_ONE; | |
353 | ||
354 | ret->loc_hash_table = htab_try_create (1024, elfNN_loongarch_local_htab_hash, | |
355 | elfNN_loongarch_local_htab_eq, NULL); | |
356 | ret->loc_hash_memory = objalloc_create (); | |
357 | if (!ret->loc_hash_table || !ret->loc_hash_memory) | |
358 | { | |
359 | elfNN_loongarch_link_hash_table_free (abfd); | |
360 | return NULL; | |
361 | } | |
362 | ret->elf.root.hash_table_free = elfNN_loongarch_link_hash_table_free; | |
363 | ||
364 | return &ret->elf.root; | |
365 | } | |
366 | ||
367 | /* Merge backend specific data from an object file to the output | |
368 | object file when linking. */ | |
369 | ||
370 | static bool | |
371 | elfNN_loongarch_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) | |
372 | { | |
373 | bfd *obfd = info->output_bfd; | |
374 | flagword in_flags = elf_elfheader (ibfd)->e_flags; | |
375 | flagword out_flags = elf_elfheader (obfd)->e_flags; | |
376 | ||
377 | if (!is_loongarch_elf (ibfd) || !is_loongarch_elf (obfd)) | |
378 | return true; | |
379 | ||
380 | if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0) | |
381 | { | |
382 | _bfd_error_handler (_("%pB: ABI is incompatible with that of " | |
383 | "the selected emulation:\n" | |
384 | " target emulation `%s' does not match `%s'"), | |
385 | ibfd, bfd_get_target (ibfd), bfd_get_target (obfd)); | |
386 | return false; | |
387 | } | |
388 | ||
389 | if (!_bfd_elf_merge_object_attributes (ibfd, info)) | |
390 | return false; | |
391 | ||
83c5f3ae XR |
392 | /* If the input BFD is not a dynamic object and it does not contain any |
393 | non-data sections, do not account its ABI. For example, various | |
394 | packages produces such data-only relocatable objects with | |
395 | `ld -r -b binary` or `objcopy`, and these objects have zero e_flags. | |
396 | But they are compatible with all ABIs. */ | |
397 | if (!(ibfd->flags & DYNAMIC)) | |
398 | { | |
399 | asection *sec; | |
400 | bool have_code_sections = false; | |
401 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
402 | if ((bfd_section_flags (sec) | |
403 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
404 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
405 | { | |
406 | have_code_sections = true; | |
407 | break; | |
408 | } | |
409 | if (!have_code_sections) | |
410 | return true; | |
411 | } | |
412 | ||
e214f8db | 413 | if (!elf_flags_init (obfd)) |
414 | { | |
415 | elf_flags_init (obfd) = true; | |
416 | elf_elfheader (obfd)->e_flags = in_flags; | |
417 | return true; | |
418 | } | |
c4a7e6b5 | 419 | else if (out_flags != in_flags) |
420 | { | |
421 | if ((EF_LOONGARCH_IS_OBJ_V0 (out_flags) | |
422 | && EF_LOONGARCH_IS_OBJ_V1 (in_flags)) | |
423 | || (EF_LOONGARCH_IS_OBJ_V0 (in_flags) | |
424 | && EF_LOONGARCH_IS_OBJ_V1 (out_flags))) | |
425 | { | |
426 | elf_elfheader (obfd)->e_flags |= EF_LOONGARCH_OBJABI_V1; | |
427 | out_flags = elf_elfheader (obfd)->e_flags; | |
428 | in_flags = out_flags; | |
429 | } | |
430 | } | |
e214f8db | 431 | |
432 | /* Disallow linking different ABIs. */ | |
c4a7e6b5 | 433 | /* Only check relocation version. |
434 | The obj_v0 is compatible with obj_v1. */ | |
3b14682a | 435 | if (EF_LOONGARCH_ABI(out_flags ^ in_flags) & EF_LOONGARCH_ABI_MASK) |
e214f8db | 436 | { |
437 | _bfd_error_handler (_("%pB: can't link different ABI object."), ibfd); | |
438 | goto fail; | |
439 | } | |
440 | ||
441 | return true; | |
442 | ||
443 | fail: | |
444 | bfd_set_error (bfd_error_bad_value); | |
445 | return false; | |
446 | } | |
447 | ||
448 | /* Create the .got section. */ | |
449 | ||
450 | static bool | |
451 | loongarch_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
452 | { | |
453 | flagword flags; | |
454 | char *name; | |
455 | asection *s, *s_got; | |
456 | struct elf_link_hash_entry *h; | |
457 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
458 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
459 | ||
460 | /* This function may be called more than once. */ | |
461 | if (htab->sgot != NULL) | |
462 | return true; | |
463 | ||
464 | flags = bed->dynamic_sec_flags; | |
465 | name = bed->rela_plts_and_copies_p ? ".rela.got" : ".rel.got"; | |
466 | s = bfd_make_section_anyway_with_flags (abfd, name, flags | SEC_READONLY); | |
467 | ||
468 | if (s == NULL || !bfd_set_section_alignment (s, bed->s->log_file_align)) | |
469 | return false; | |
470 | htab->srelgot = s; | |
471 | ||
472 | s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
473 | if (s == NULL || !bfd_set_section_alignment (s, bed->s->log_file_align)) | |
474 | return false; | |
475 | htab->sgot = s; | |
476 | ||
477 | /* The first bit of the global offset table is the header. */ | |
478 | s->size += bed->got_header_size; | |
479 | ||
480 | if (bed->want_got_plt) | |
481 | { | |
482 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
483 | if (s == NULL || !bfd_set_section_alignment (s, bed->s->log_file_align)) | |
484 | return false; | |
485 | htab->sgotplt = s; | |
486 | ||
487 | /* Reserve room for the header. */ | |
488 | s->size = GOTPLT_HEADER_SIZE; | |
489 | } | |
490 | ||
491 | if (bed->want_got_sym) | |
492 | { | |
493 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
494 | section. We don't do this in the linker script because we don't want | |
495 | to define the symbol if we are not creating a global offset table. */ | |
496 | h = _bfd_elf_define_linkage_sym (abfd, info, s_got, | |
497 | "_GLOBAL_OFFSET_TABLE_"); | |
498 | elf_hash_table (info)->hgot = h; | |
499 | if (h == NULL) | |
500 | return false; | |
501 | } | |
502 | return true; | |
503 | } | |
504 | ||
505 | /* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and | |
506 | .rela.bss sections in DYNOBJ, and set up shortcuts to them in our | |
507 | hash table. */ | |
508 | ||
509 | static bool | |
510 | loongarch_elf_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info) | |
511 | { | |
512 | struct loongarch_elf_link_hash_table *htab; | |
513 | ||
514 | htab = loongarch_elf_hash_table (info); | |
515 | BFD_ASSERT (htab != NULL); | |
516 | ||
517 | if (!loongarch_elf_create_got_section (dynobj, info)) | |
518 | return false; | |
519 | ||
520 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
521 | return false; | |
522 | ||
523 | if (!bfd_link_pic (info)) | |
524 | htab->sdyntdata | |
525 | = bfd_make_section_anyway_with_flags (dynobj, ".tdata.dyn", | |
526 | SEC_ALLOC | SEC_THREAD_LOCAL); | |
527 | ||
528 | if (!htab->elf.splt || !htab->elf.srelplt || !htab->elf.sdynbss | |
529 | || (!bfd_link_pic (info) && (!htab->elf.srelbss || !htab->sdyntdata))) | |
530 | abort (); | |
531 | ||
532 | return true; | |
533 | } | |
534 | ||
535 | static bool | |
536 | loongarch_elf_record_tls_and_got_reference (bfd *abfd, | |
537 | struct bfd_link_info *info, | |
538 | struct elf_link_hash_entry *h, | |
539 | unsigned long symndx, | |
540 | char tls_type) | |
541 | { | |
542 | struct loongarch_elf_link_hash_table *htab = loongarch_elf_hash_table (info); | |
543 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
544 | ||
545 | /* This is a global offset table entry for a local symbol. */ | |
546 | if (elf_local_got_refcounts (abfd) == NULL) | |
547 | { | |
548 | bfd_size_type size = | |
549 | symtab_hdr->sh_info * (sizeof (bfd_vma) + sizeof (tls_type)); | |
550 | if (!(elf_local_got_refcounts (abfd) = bfd_zalloc (abfd, size))) | |
551 | return false; | |
552 | _bfd_loongarch_elf_local_got_tls_type (abfd) = | |
553 | (char *) (elf_local_got_refcounts (abfd) + symtab_hdr->sh_info); | |
554 | } | |
555 | ||
556 | switch (tls_type) | |
557 | { | |
558 | case GOT_NORMAL: | |
559 | case GOT_TLS_GD: | |
560 | case GOT_TLS_IE: | |
561 | /* Need GOT. */ | |
562 | if (htab->elf.sgot == NULL | |
563 | && !loongarch_elf_create_got_section (htab->elf.dynobj, info)) | |
564 | return false; | |
565 | if (h) | |
566 | { | |
567 | if (h->got.refcount < 0) | |
568 | h->got.refcount = 0; | |
569 | h->got.refcount++; | |
570 | } | |
571 | else | |
572 | elf_local_got_refcounts (abfd)[symndx]++; | |
573 | break; | |
574 | case GOT_TLS_LE: | |
575 | /* No need for GOT. */ | |
576 | break; | |
577 | default: | |
578 | _bfd_error_handler (_("Internal error: unreachable.")); | |
579 | return false; | |
580 | } | |
581 | ||
582 | char *new_tls_type = &_bfd_loongarch_elf_tls_type (abfd, h, symndx); | |
583 | *new_tls_type |= tls_type; | |
584 | if ((*new_tls_type & GOT_NORMAL) && (*new_tls_type & ~GOT_NORMAL)) | |
585 | { | |
586 | _bfd_error_handler (_("%pB: `%s' accessed both as normal and " | |
587 | "thread local symbol"), | |
588 | abfd, | |
589 | h ? h->root.root.string : "<local>"); | |
590 | return false; | |
591 | } | |
592 | ||
593 | return true; | |
594 | } | |
595 | ||
596 | /* Look through the relocs for a section during the first phase, and | |
597 | allocate space in the global offset table or procedure linkage | |
598 | table. */ | |
599 | ||
600 | static bool | |
601 | loongarch_elf_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
602 | asection *sec, const Elf_Internal_Rela *relocs) | |
603 | { | |
604 | struct loongarch_elf_link_hash_table *htab; | |
605 | Elf_Internal_Shdr *symtab_hdr; | |
606 | struct elf_link_hash_entry **sym_hashes; | |
607 | const Elf_Internal_Rela *rel; | |
608 | asection *sreloc = NULL; | |
609 | ||
610 | if (bfd_link_relocatable (info)) | |
611 | return true; | |
612 | ||
613 | htab = loongarch_elf_hash_table (info); | |
614 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
615 | sym_hashes = elf_sym_hashes (abfd); | |
616 | ||
617 | if (htab->elf.dynobj == NULL) | |
618 | htab->elf.dynobj = abfd; | |
619 | ||
620 | for (rel = relocs; rel < relocs + sec->reloc_count; rel++) | |
621 | { | |
622 | unsigned int r_type; | |
623 | unsigned int r_symndx; | |
624 | struct elf_link_hash_entry *h; | |
625 | Elf_Internal_Sym *isym = NULL; | |
626 | ||
e214f8db | 627 | r_symndx = ELFNN_R_SYM (rel->r_info); |
628 | r_type = ELFNN_R_TYPE (rel->r_info); | |
629 | ||
630 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
631 | { | |
632 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); | |
633 | return false; | |
634 | } | |
635 | ||
636 | if (r_symndx < symtab_hdr->sh_info) | |
637 | { | |
638 | /* A local symbol. */ | |
6d13722a | 639 | isym = bfd_sym_from_r_symndx (&htab->elf.sym_cache, abfd, r_symndx); |
e214f8db | 640 | if (isym == NULL) |
641 | return false; | |
642 | ||
643 | if (ELF_ST_TYPE (isym->st_info) == STT_GNU_IFUNC) | |
644 | { | |
645 | h = elfNN_loongarch_get_local_sym_hash (htab, abfd, rel, true); | |
646 | if (h == NULL) | |
647 | return false; | |
648 | ||
649 | h->type = STT_GNU_IFUNC; | |
650 | h->ref_regular = 1; | |
651 | } | |
652 | else | |
653 | h = NULL; | |
654 | } | |
655 | else | |
656 | { | |
657 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
658 | while (h->root.type == bfd_link_hash_indirect | |
659 | || h->root.type == bfd_link_hash_warning) | |
660 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
661 | } | |
662 | ||
d218dba3 | 663 | /* It is referenced by a non-shared object. */ |
664 | if (h != NULL) | |
665 | h->ref_regular = 1; | |
666 | ||
e214f8db | 667 | if (h && h->type == STT_GNU_IFUNC) |
668 | { | |
669 | if (htab->elf.dynobj == NULL) | |
670 | htab->elf.dynobj = abfd; | |
671 | ||
6d13722a | 672 | /* Create 'irelifunc' in PIC object. */ |
673 | if (bfd_link_pic (info) | |
674 | && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
675 | return false; | |
676 | /* If '.plt' not represent, create '.iplt' to deal with ifunc. */ | |
677 | else if (!htab->elf.splt | |
678 | && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
679 | return false; | |
d218dba3 | 680 | /* Create the ifunc sections, iplt and ipltgot, for static |
681 | executables. */ | |
682 | if ((r_type == R_LARCH_64 || r_type == R_LARCH_32) | |
683 | && !_bfd_elf_create_ifunc_sections (htab->elf.dynobj, info)) | |
684 | return false; | |
685 | ||
e214f8db | 686 | if (h->plt.refcount < 0) |
687 | h->plt.refcount = 0; | |
688 | h->plt.refcount++; | |
689 | h->needs_plt = 1; | |
690 | ||
691 | elf_tdata (info->output_bfd)->has_gnu_osabi |= elf_gnu_osabi_ifunc; | |
692 | } | |
693 | ||
6d13722a | 694 | int need_dynreloc = 0; |
695 | int only_need_pcrel = 0; | |
696 | ||
e214f8db | 697 | switch (r_type) |
698 | { | |
6d13722a | 699 | case R_LARCH_GOT_PC_HI20: |
700 | case R_LARCH_GOT_HI20: | |
e214f8db | 701 | case R_LARCH_SOP_PUSH_GPREL: |
6d13722a | 702 | /* For la.global. */ |
703 | if (h) | |
704 | h->pointer_equality_needed = 1; | |
e214f8db | 705 | if (!loongarch_elf_record_tls_and_got_reference (abfd, info, h, |
706 | r_symndx, | |
707 | GOT_NORMAL)) | |
708 | return false; | |
709 | break; | |
710 | ||
6d13722a | 711 | case R_LARCH_TLS_LD_PC_HI20: |
712 | case R_LARCH_TLS_LD_HI20: | |
713 | case R_LARCH_TLS_GD_PC_HI20: | |
714 | case R_LARCH_TLS_GD_HI20: | |
e214f8db | 715 | case R_LARCH_SOP_PUSH_TLS_GD: |
716 | if (!loongarch_elf_record_tls_and_got_reference (abfd, info, h, | |
717 | r_symndx, | |
718 | GOT_TLS_GD)) | |
719 | return false; | |
720 | break; | |
721 | ||
6d13722a | 722 | case R_LARCH_TLS_IE_PC_HI20: |
723 | case R_LARCH_TLS_IE_HI20: | |
e214f8db | 724 | case R_LARCH_SOP_PUSH_TLS_GOT: |
725 | if (bfd_link_pic (info)) | |
726 | /* May fail for lazy-bind. */ | |
727 | info->flags |= DF_STATIC_TLS; | |
728 | ||
729 | if (!loongarch_elf_record_tls_and_got_reference (abfd, info, h, | |
730 | r_symndx, | |
731 | GOT_TLS_IE)) | |
732 | return false; | |
733 | break; | |
734 | ||
6d13722a | 735 | case R_LARCH_TLS_LE_HI20: |
e214f8db | 736 | case R_LARCH_SOP_PUSH_TLS_TPREL: |
737 | if (!bfd_link_executable (info)) | |
738 | return false; | |
739 | ||
740 | info->flags |= DF_STATIC_TLS; | |
741 | ||
742 | if (!loongarch_elf_record_tls_and_got_reference (abfd, info, h, | |
743 | r_symndx, | |
744 | GOT_TLS_LE)) | |
745 | return false; | |
746 | break; | |
747 | ||
6d13722a | 748 | case R_LARCH_ABS_HI20: |
e214f8db | 749 | case R_LARCH_SOP_PUSH_ABSOLUTE: |
750 | if (h != NULL) | |
751 | /* If this reloc is in a read-only section, we might | |
752 | need a copy reloc. We can't check reliably at this | |
753 | stage whether the section is read-only, as input | |
754 | sections have not yet been mapped to output sections. | |
755 | Tentatively set the flag for now, and correct in | |
756 | adjust_dynamic_symbol. */ | |
757 | h->non_got_ref = 1; | |
758 | break; | |
759 | ||
6d13722a | 760 | case R_LARCH_PCALA_HI20: |
e214f8db | 761 | if (h != NULL) |
762 | { | |
42bd5254 | 763 | /* For pcalau12i + jirl. */ |
764 | h->needs_plt = 1; | |
765 | if (h->plt.refcount < 0) | |
766 | h->plt.refcount = 0; | |
767 | h->plt.refcount++; | |
768 | ||
e214f8db | 769 | h->non_got_ref = 1; |
6d13722a | 770 | h->pointer_equality_needed = 1; |
771 | } | |
772 | ||
773 | break; | |
774 | ||
775 | case R_LARCH_B21: | |
776 | case R_LARCH_B16: | |
777 | case R_LARCH_B26: | |
778 | if (h != NULL) | |
779 | { | |
780 | h->needs_plt = 1; | |
781 | if (!bfd_link_pic (info)) | |
782 | h->non_got_ref = 1; | |
e214f8db | 783 | |
784 | /* We try to create PLT stub for all non-local function. */ | |
785 | if (h->plt.refcount < 0) | |
786 | h->plt.refcount = 0; | |
787 | h->plt.refcount++; | |
788 | } | |
6d13722a | 789 | |
790 | break; | |
791 | ||
792 | case R_LARCH_SOP_PUSH_PCREL: | |
793 | if (h != NULL) | |
794 | { | |
795 | if (!bfd_link_pic (info)) | |
796 | h->non_got_ref = 1; | |
797 | ||
798 | /* We try to create PLT stub for all non-local function. */ | |
799 | if (h->plt.refcount < 0) | |
800 | h->plt.refcount = 0; | |
801 | h->plt.refcount++; | |
802 | h->pointer_equality_needed = 1; | |
803 | } | |
804 | ||
e214f8db | 805 | break; |
806 | ||
807 | case R_LARCH_SOP_PUSH_PLT_PCREL: | |
808 | /* This symbol requires a procedure linkage table entry. We | |
809 | actually build the entry in adjust_dynamic_symbol, | |
810 | because this might be a case of linking PIC code without | |
811 | linking in any dynamic objects, in which case we don't | |
812 | need to generate a procedure linkage table after all. */ | |
813 | if (h != NULL) | |
814 | { | |
815 | h->needs_plt = 1; | |
816 | if (h->plt.refcount < 0) | |
817 | h->plt.refcount = 0; | |
818 | h->plt.refcount++; | |
819 | } | |
820 | break; | |
821 | ||
822 | case R_LARCH_TLS_DTPREL32: | |
823 | case R_LARCH_TLS_DTPREL64: | |
824 | need_dynreloc = 1; | |
825 | only_need_pcrel = 1; | |
826 | break; | |
827 | ||
828 | case R_LARCH_JUMP_SLOT: | |
829 | case R_LARCH_32: | |
830 | case R_LARCH_64: | |
6d13722a | 831 | |
e214f8db | 832 | need_dynreloc = 1; |
833 | ||
834 | /* If resolved symbol is defined in this object, | |
835 | 1. Under pie, the symbol is known. We convert it | |
836 | into R_LARCH_RELATIVE and need load-addr still. | |
837 | 2. Under pde, the symbol is known and we can discard R_LARCH_NN. | |
838 | 3. Under dll, R_LARCH_NN can't be changed normally, since | |
839 | its defination could be covered by the one in executable. | |
840 | For symbolic, we convert it into R_LARCH_RELATIVE. | |
841 | Thus, only under pde, it needs pcrel only. We discard it. */ | |
842 | only_need_pcrel = bfd_link_pde (info); | |
843 | ||
d218dba3 | 844 | if (h != NULL |
845 | && (!bfd_link_pic (info) | |
846 | || h->type == STT_GNU_IFUNC)) | |
847 | { | |
848 | /* This reloc might not bind locally. */ | |
849 | h->non_got_ref = 1; | |
850 | h->pointer_equality_needed = 1; | |
851 | ||
852 | if (!h->def_regular | |
853 | || (sec->flags & (SEC_CODE | SEC_READONLY)) != 0) | |
854 | { | |
855 | /* We may need a .plt entry if the symbol is a function | |
856 | defined in a shared lib or is a function referenced | |
857 | from the code or read-only section. */ | |
858 | h->plt.refcount += 1; | |
859 | } | |
860 | } | |
e214f8db | 861 | break; |
862 | ||
863 | case R_LARCH_GNU_VTINHERIT: | |
864 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
865 | return false; | |
866 | break; | |
867 | ||
868 | case R_LARCH_GNU_VTENTRY: | |
869 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
870 | return false; | |
871 | break; | |
872 | ||
873 | default: | |
874 | break; | |
875 | } | |
876 | ||
877 | /* Record some info for sizing and allocating dynamic entry. */ | |
878 | if (need_dynreloc && (sec->flags & SEC_ALLOC)) | |
879 | { | |
880 | /* When creating a shared object, we must copy these | |
881 | relocs into the output file. We create a reloc | |
882 | section in dynobj and make room for the reloc. */ | |
883 | struct elf_dyn_relocs *p; | |
884 | struct elf_dyn_relocs **head; | |
885 | ||
886 | if (sreloc == NULL) | |
887 | { | |
888 | sreloc | |
889 | = _bfd_elf_make_dynamic_reloc_section (sec, htab->elf.dynobj, | |
890 | LARCH_ELF_LOG_WORD_BYTES, | |
891 | abfd, /*rela?*/ true); | |
892 | if (sreloc == NULL) | |
893 | return false; | |
894 | } | |
895 | ||
896 | /* If this is a global symbol, we count the number of | |
897 | relocations we need for this symbol. */ | |
898 | if (h != NULL) | |
d218dba3 | 899 | head = &h->dyn_relocs; |
e214f8db | 900 | else |
901 | { | |
902 | /* Track dynamic relocs needed for local syms too. | |
903 | We really need local syms available to do this | |
904 | easily. Oh well. */ | |
905 | ||
906 | asection *s; | |
907 | void *vpp; | |
908 | ||
909 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
910 | if (s == NULL) | |
911 | s = sec; | |
912 | ||
913 | vpp = &elf_section_data (s)->local_dynrel; | |
914 | head = (struct elf_dyn_relocs **) vpp; | |
915 | } | |
916 | ||
917 | p = *head; | |
918 | if (p == NULL || p->sec != sec) | |
919 | { | |
920 | bfd_size_type amt = sizeof *p; | |
921 | p = (struct elf_dyn_relocs *) bfd_alloc (htab->elf.dynobj, amt); | |
922 | if (p == NULL) | |
923 | return false; | |
924 | p->next = *head; | |
925 | *head = p; | |
926 | p->sec = sec; | |
927 | p->count = 0; | |
928 | p->pc_count = 0; | |
929 | } | |
930 | ||
931 | p->count++; | |
932 | p->pc_count += only_need_pcrel; | |
933 | } | |
934 | } | |
935 | ||
936 | return true; | |
937 | } | |
938 | ||
939 | /* Find dynamic relocs for H that apply to read-only sections. */ | |
940 | ||
941 | static asection * | |
942 | readonly_dynrelocs (struct elf_link_hash_entry *h) | |
943 | { | |
944 | struct elf_dyn_relocs *p; | |
945 | ||
d218dba3 | 946 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
e214f8db | 947 | { |
948 | asection *s = p->sec->output_section; | |
949 | ||
950 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
951 | return p->sec; | |
952 | } | |
953 | return NULL; | |
954 | } | |
955 | ||
956 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
957 | regular object. The current definition is in some section of the | |
958 | dynamic object, but we're not including those sections. We have to | |
959 | change the definition to something the rest of the link can | |
960 | understand. */ | |
961 | static bool | |
962 | loongarch_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
963 | struct elf_link_hash_entry *h) | |
964 | { | |
965 | struct loongarch_elf_link_hash_table *htab; | |
e214f8db | 966 | bfd *dynobj; |
e214f8db | 967 | |
968 | htab = loongarch_elf_hash_table (info); | |
969 | BFD_ASSERT (htab != NULL); | |
970 | ||
971 | dynobj = htab->elf.dynobj; | |
972 | ||
973 | /* Make sure we know what is going on here. */ | |
974 | BFD_ASSERT (dynobj != NULL | |
975 | && (h->needs_plt || h->type == STT_GNU_IFUNC || h->is_weakalias | |
976 | || (h->def_dynamic && h->ref_regular && !h->def_regular))); | |
977 | ||
978 | /* If this is a function, put it in the procedure linkage table. We | |
979 | will fill in the contents of the procedure linkage table later | |
980 | (although we could actually do it here). */ | |
981 | if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt) | |
982 | { | |
983 | if (h->plt.refcount < 0 | |
984 | || (h->type != STT_GNU_IFUNC | |
985 | && (SYMBOL_REFERENCES_LOCAL (info, h) | |
986 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
987 | && h->root.type == bfd_link_hash_undefweak)))) | |
988 | { | |
989 | /* This case can occur if we saw a R_LARCH_SOP_PUSH_PLT_PCREL reloc | |
990 | in an input file, but the symbol was never referred to by a | |
991 | dynamic object, or if all references were garbage collected. | |
992 | In such a case, we don't actually need to build a PLT entry. */ | |
993 | h->plt.offset = MINUS_ONE; | |
994 | h->needs_plt = 0; | |
995 | } | |
996 | else | |
997 | h->needs_plt = 1; | |
998 | ||
999 | return true; | |
1000 | } | |
1001 | else | |
1002 | h->plt.offset = MINUS_ONE; | |
1003 | ||
1004 | /* If this is a weak symbol, and there is a real definition, the | |
1005 | processor independent code will have arranged for us to see the | |
1006 | real definition first, and we can just use the same value. */ | |
1007 | if (h->is_weakalias) | |
1008 | { | |
1009 | struct elf_link_hash_entry *def = weakdef (h); | |
1010 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
1011 | h->root.u.def.section = def->root.u.def.section; | |
1012 | h->root.u.def.value = def->root.u.def.value; | |
1013 | return true; | |
1014 | } | |
1015 | ||
6d13722a | 1016 | /* R_LARCH_COPY is not adept glibc, not to generate. */ |
1017 | /* Can not print anything, because make check ld. */ | |
1018 | return true; | |
e214f8db | 1019 | } |
1020 | ||
1021 | /* Allocate space in .plt, .got and associated reloc sections for | |
1022 | dynamic relocs. */ | |
1023 | ||
1024 | static bool | |
1025 | allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
1026 | { | |
1027 | struct bfd_link_info *info; | |
1028 | struct loongarch_elf_link_hash_table *htab; | |
e214f8db | 1029 | struct elf_dyn_relocs *p; |
1030 | ||
1031 | if (h->root.type == bfd_link_hash_indirect) | |
1032 | return true; | |
1033 | ||
d218dba3 | 1034 | if (h->type == STT_GNU_IFUNC |
1035 | && h->def_regular) | |
1036 | return true; | |
1037 | ||
e214f8db | 1038 | info = (struct bfd_link_info *) inf; |
1039 | htab = loongarch_elf_hash_table (info); | |
6d13722a | 1040 | bool dyn = htab->elf.dynamic_sections_created; |
e214f8db | 1041 | BFD_ASSERT (htab != NULL); |
1042 | ||
1043 | do | |
1044 | { | |
1045 | asection *plt, *gotplt, *relplt; | |
1046 | ||
1047 | if (!h->needs_plt) | |
1048 | break; | |
1049 | ||
1050 | h->needs_plt = 0; | |
1051 | ||
1052 | if (htab->elf.splt) | |
1053 | { | |
6d13722a | 1054 | if (h->dynindx == -1 && !h->forced_local && dyn |
1055 | && h->root.type == bfd_link_hash_undefweak) | |
1056 | { | |
1057 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
1058 | return false; | |
1059 | } | |
e214f8db | 1060 | |
1061 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h) | |
1062 | && h->type != STT_GNU_IFUNC) | |
1063 | break; | |
1064 | ||
1065 | plt = htab->elf.splt; | |
1066 | gotplt = htab->elf.sgotplt; | |
1067 | relplt = htab->elf.srelplt; | |
1068 | } | |
1069 | else if (htab->elf.iplt) | |
1070 | { | |
1071 | /* .iplt only for IFUNC. */ | |
1072 | if (h->type != STT_GNU_IFUNC) | |
1073 | break; | |
1074 | ||
1075 | plt = htab->elf.iplt; | |
1076 | gotplt = htab->elf.igotplt; | |
1077 | relplt = htab->elf.irelplt; | |
1078 | } | |
1079 | else | |
1080 | break; | |
1081 | ||
1082 | if (plt->size == 0) | |
1083 | plt->size = PLT_HEADER_SIZE; | |
1084 | ||
1085 | h->plt.offset = plt->size; | |
1086 | plt->size += PLT_ENTRY_SIZE; | |
1087 | gotplt->size += GOT_ENTRY_SIZE; | |
1088 | relplt->size += sizeof (ElfNN_External_Rela); | |
1089 | ||
d218dba3 | 1090 | /* If this symbol is not defined in a regular file, and we are |
1091 | not generating a shared library, then set the symbol to this | |
1092 | location in the .plt. This is required to make function | |
1093 | pointers compare as equal between the normal executable and | |
1094 | the shared library. */ | |
6d13722a | 1095 | if (!bfd_link_pic (info) |
d218dba3 | 1096 | && !h->def_regular) |
1097 | { | |
1098 | h->root.u.def.section = plt; | |
1099 | h->root.u.def.value = h->plt.offset; | |
1100 | } | |
1101 | ||
e214f8db | 1102 | h->needs_plt = 1; |
1103 | } | |
1104 | while (0); | |
1105 | ||
1106 | if (!h->needs_plt) | |
1107 | h->plt.offset = MINUS_ONE; | |
1108 | ||
1109 | if (0 < h->got.refcount) | |
1110 | { | |
1111 | asection *s; | |
e214f8db | 1112 | int tls_type = loongarch_elf_hash_entry (h)->tls_type; |
1113 | ||
1114 | /* Make sure this symbol is output as a dynamic symbol. | |
1115 | Undefined weak syms won't yet be marked as dynamic. */ | |
6d13722a | 1116 | if (h->dynindx == -1 && !h->forced_local && dyn |
1117 | && h->root.type == bfd_link_hash_undefweak) | |
d218dba3 | 1118 | { |
6d13722a | 1119 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) |
1120 | return false; | |
d218dba3 | 1121 | } |
e214f8db | 1122 | |
1123 | s = htab->elf.sgot; | |
1124 | h->got.offset = s->size; | |
e214f8db | 1125 | if (tls_type & (GOT_TLS_GD | GOT_TLS_IE)) |
1126 | { | |
1127 | /* TLS_GD needs two dynamic relocs and two GOT slots. */ | |
1128 | if (tls_type & GOT_TLS_GD) | |
1129 | { | |
1130 | s->size += 2 * GOT_ENTRY_SIZE; | |
6d13722a | 1131 | if (bfd_link_executable (info)) |
1132 | { | |
1133 | /* Link exe and not defined local. */ | |
1134 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) | |
1135 | htab->elf.srelgot->size += 2 * sizeof (ElfNN_External_Rela); | |
1136 | } | |
1137 | else | |
1138 | { | |
1139 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
1140 | htab->elf.srelgot->size += sizeof (ElfNN_External_Rela); | |
1141 | else | |
1142 | htab->elf.srelgot->size += 2 * sizeof (ElfNN_External_Rela); | |
1143 | } | |
e214f8db | 1144 | } |
1145 | ||
1146 | /* TLS_IE needs one dynamic reloc and one GOT slot. */ | |
1147 | if (tls_type & GOT_TLS_IE) | |
1148 | { | |
1149 | s->size += GOT_ENTRY_SIZE; | |
6d13722a | 1150 | |
1151 | if (bfd_link_executable (info)) | |
1152 | { | |
1153 | /* Link exe and not defined local. */ | |
1154 | if (!SYMBOL_REFERENCES_LOCAL (info, h)) | |
1155 | htab->elf.srelgot->size += sizeof (ElfNN_External_Rela); | |
1156 | } | |
1157 | else | |
1158 | { | |
1159 | htab->elf.srelgot->size += sizeof (ElfNN_External_Rela); | |
1160 | } | |
e214f8db | 1161 | } |
1162 | } | |
1163 | else | |
1164 | { | |
1165 | s->size += GOT_ENTRY_SIZE; | |
6d13722a | 1166 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
1167 | || h->root.type != bfd_link_hash_undefweak) | |
1168 | && (bfd_link_pic (info) | |
1169 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), | |
1170 | h)) | |
1171 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
1172 | /* Undefined weak symbol in static PIE resolves to 0 without | |
1173 | any dynamic relocations. */ | |
e214f8db | 1174 | htab->elf.srelgot->size += sizeof (ElfNN_External_Rela); |
1175 | } | |
1176 | } | |
1177 | else | |
1178 | h->got.offset = MINUS_ONE; | |
1179 | ||
d218dba3 | 1180 | if (h->dyn_relocs == NULL) |
e214f8db | 1181 | return true; |
1182 | ||
6d13722a | 1183 | /* Extra dynamic relocate, |
1184 | * R_LARCH_64 | |
1185 | * R_LARCH_TLS_DTPRELNN | |
1186 | * R_LARCH_JUMP_SLOT | |
1187 | * R_LARCH_NN. */ | |
1188 | ||
1189 | if (SYMBOL_CALLS_LOCAL (info, h)) | |
e214f8db | 1190 | { |
1191 | struct elf_dyn_relocs **pp; | |
1192 | ||
d218dba3 | 1193 | for (pp = &h->dyn_relocs; (p = *pp) != NULL;) |
e214f8db | 1194 | { |
1195 | p->count -= p->pc_count; | |
1196 | p->pc_count = 0; | |
1197 | if (p->count == 0) | |
1198 | *pp = p->next; | |
1199 | else | |
1200 | pp = &p->next; | |
1201 | } | |
1202 | } | |
1203 | ||
1204 | if (h->root.type == bfd_link_hash_undefweak) | |
1205 | { | |
6d13722a | 1206 | if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h) |
1207 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
1208 | || (!bfd_link_pic (info) && h->non_got_ref)) | |
d218dba3 | 1209 | h->dyn_relocs = NULL; |
6d13722a | 1210 | else if (h->dynindx == -1 && !h->forced_local) |
1211 | { | |
1212 | /* Make sure this symbol is output as a dynamic symbol. | |
1213 | Undefined weak syms won't yet be marked as dynamic. */ | |
1214 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
1215 | return false; | |
1216 | ||
1217 | if (h->dynindx == -1) | |
1218 | h->dyn_relocs = NULL; | |
1219 | } | |
e214f8db | 1220 | } |
1221 | ||
d218dba3 | 1222 | for (p = h->dyn_relocs; p != NULL; p = p->next) |
e214f8db | 1223 | { |
1224 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
1225 | sreloc->size += p->count * sizeof (ElfNN_External_Rela); | |
1226 | } | |
1227 | ||
1228 | return true; | |
1229 | } | |
1230 | ||
bc2a35c0 | 1231 | /* A modified version of _bfd_elf_allocate_ifunc_dyn_relocs. |
1232 | For local def and ref ifunc, | |
1233 | dynamic relocations are stored in | |
1234 | 1. rela.srelgot section in dynamic object (dll or exec). | |
1235 | 2. rela.irelplt section in static executable. | |
1236 | Unlike _bfd_elf_allocate_ifunc_dyn_relocs, rela.srelgot is used | |
1237 | instead of rela.srelplt. Glibc ELF loader will not support | |
1238 | R_LARCH_IRELATIVE relocation in rela.plt. */ | |
1239 | ||
1240 | static bool | |
1241 | local_allocate_ifunc_dyn_relocs (struct bfd_link_info *info, | |
1242 | struct elf_link_hash_entry *h, | |
1243 | struct elf_dyn_relocs **head, | |
1244 | unsigned int plt_entry_size, | |
1245 | unsigned int plt_header_size, | |
1246 | unsigned int got_entry_size, | |
1247 | bool avoid_plt) | |
1248 | { | |
1249 | asection *plt, *gotplt, *relplt; | |
1250 | struct elf_dyn_relocs *p; | |
1251 | unsigned int sizeof_reloc; | |
1252 | const struct elf_backend_data *bed; | |
1253 | struct elf_link_hash_table *htab; | |
1254 | /* If AVOID_PLT is TRUE, don't use PLT if possible. */ | |
1255 | bool use_plt = !avoid_plt || h->plt.refcount > 0; | |
1256 | bool need_dynreloc = !use_plt || bfd_link_pic (info); | |
1257 | ||
1258 | /* When a PIC object references a STT_GNU_IFUNC symbol defined | |
1259 | in executable or it isn't referenced via PLT, the address of | |
1260 | the resolved function may be used. But in non-PIC executable, | |
1261 | the address of its plt slot may be used. Pointer equality may | |
1262 | not work correctly. PIE or non-PLT reference should be used if | |
1263 | pointer equality is required here. | |
1264 | ||
1265 | If STT_GNU_IFUNC symbol is defined in position-dependent executable, | |
1266 | backend should change it to the normal function and set its address | |
1267 | to its PLT entry which should be resolved by R_*_IRELATIVE at | |
1268 | run-time. All external references should be resolved to its PLT in | |
1269 | executable. */ | |
1270 | if (!need_dynreloc | |
1271 | && !(bfd_link_pde (info) && h->def_regular) | |
1272 | && (h->dynindx != -1 | |
1273 | || info->export_dynamic) | |
1274 | && h->pointer_equality_needed) | |
1275 | { | |
1276 | info->callbacks->einfo | |
1277 | /* xgettext:c-format. */ | |
1278 | (_("%F%P: dynamic STT_GNU_IFUNC symbol `%s' with pointer " | |
1279 | "equality in `%pB' can not be used when making an " | |
1280 | "executable; recompile with -fPIE and relink with -pie\n"), | |
1281 | h->root.root.string, | |
1282 | h->root.u.def.section->owner); | |
1283 | bfd_set_error (bfd_error_bad_value); | |
1284 | return false; | |
1285 | } | |
1286 | ||
1287 | htab = elf_hash_table (info); | |
1288 | ||
1289 | /* When the symbol is marked with regular reference, if PLT isn't used | |
1290 | or we are building a PIC object, we must keep dynamic relocation | |
1291 | if there is non-GOT reference and use PLT if there is PC-relative | |
1292 | reference. */ | |
1293 | if (need_dynreloc && h->ref_regular) | |
1294 | { | |
1295 | bool keep = false; | |
1296 | for (p = *head; p != NULL; p = p->next) | |
1297 | if (p->count) | |
1298 | { | |
1299 | h->non_got_ref = 1; | |
1300 | /* Need dynamic relocations for non-GOT reference. */ | |
1301 | keep = true; | |
1302 | if (p->pc_count) | |
1303 | { | |
1304 | /* Must use PLT for PC-relative reference. */ | |
1305 | use_plt = true; | |
1306 | need_dynreloc = bfd_link_pic (info); | |
1307 | break; | |
1308 | } | |
1309 | } | |
1310 | if (keep) | |
1311 | goto keep; | |
1312 | } | |
1313 | ||
1314 | /* Support garbage collection against STT_GNU_IFUNC symbols. */ | |
1315 | if (h->plt.refcount <= 0 && h->got.refcount <= 0) | |
1316 | { | |
1317 | h->got = htab->init_got_offset; | |
1318 | h->plt = htab->init_plt_offset; | |
1319 | *head = NULL; | |
1320 | return true; | |
1321 | } | |
1322 | ||
1323 | /* Return and discard space for dynamic relocations against it if | |
1324 | it is never referenced. */ | |
1325 | if (!h->ref_regular) | |
1326 | { | |
1327 | if (h->plt.refcount > 0 | |
1328 | || h->got.refcount > 0) | |
1329 | abort (); | |
1330 | h->got = htab->init_got_offset; | |
1331 | h->plt = htab->init_plt_offset; | |
1332 | *head = NULL; | |
1333 | return true; | |
1334 | } | |
1335 | ||
1336 | keep: | |
1337 | bed = get_elf_backend_data (info->output_bfd); | |
1338 | if (bed->rela_plts_and_copies_p) | |
1339 | sizeof_reloc = bed->s->sizeof_rela; | |
1340 | else | |
1341 | sizeof_reloc = bed->s->sizeof_rel; | |
1342 | ||
1343 | /* When building a static executable, use iplt, igot.plt and | |
1344 | rela.iplt sections for STT_GNU_IFUNC symbols. */ | |
1345 | if (htab->splt != NULL) | |
1346 | { | |
1347 | plt = htab->splt; | |
1348 | gotplt = htab->sgotplt; | |
1349 | /* Change dynamic info of ifunc gotplt from srelplt to srelgot. */ | |
1350 | relplt = htab->srelgot; | |
1351 | ||
1352 | /* If this is the first plt entry and PLT is used, make room for | |
1353 | the special first entry. */ | |
1354 | if (plt->size == 0 && use_plt) | |
1355 | plt->size += plt_header_size; | |
1356 | } | |
1357 | else | |
1358 | { | |
1359 | plt = htab->iplt; | |
1360 | gotplt = htab->igotplt; | |
1361 | relplt = htab->irelplt; | |
1362 | } | |
1363 | ||
1364 | if (use_plt) | |
1365 | { | |
1366 | /* Don't update value of STT_GNU_IFUNC symbol to PLT. We need | |
1367 | the original value for R_*_IRELATIVE. */ | |
1368 | h->plt.offset = plt->size; | |
1369 | ||
1370 | /* Make room for this entry in the plt/iplt section. */ | |
1371 | plt->size += plt_entry_size; | |
1372 | ||
1373 | /* We also need to make an entry in the got.plt/got.iplt section, | |
1374 | which will be placed in the got section by the linker script. */ | |
1375 | gotplt->size += got_entry_size; | |
1376 | } | |
1377 | ||
1378 | /* We also need to make an entry in the rela.plt/.rela.iplt | |
1379 | section for GOTPLT relocation if PLT is used. */ | |
1380 | if (use_plt) | |
1381 | { | |
1382 | relplt->size += sizeof_reloc; | |
1383 | relplt->reloc_count++; | |
1384 | } | |
1385 | ||
1386 | /* We need dynamic relocation for STT_GNU_IFUNC symbol only when | |
1387 | there is a non-GOT reference in a PIC object or PLT isn't used. */ | |
1388 | if (!need_dynreloc || !h->non_got_ref) | |
1389 | *head = NULL; | |
1390 | ||
1391 | /* Finally, allocate space. */ | |
1392 | p = *head; | |
1393 | if (p != NULL) | |
1394 | { | |
1395 | bfd_size_type count = 0; | |
1396 | do | |
1397 | { | |
1398 | count += p->count; | |
1399 | p = p->next; | |
1400 | } | |
1401 | while (p != NULL); | |
1402 | ||
1403 | htab->ifunc_resolvers = count != 0; | |
1404 | ||
1405 | /* Dynamic relocations are stored in | |
1406 | 1. rela.srelgot section in PIC object. | |
1407 | 2. rela.srelgot section in dynamic executable. | |
1408 | 3. rela.irelplt section in static executable. */ | |
1409 | if (htab->splt != NULL) | |
1410 | htab->srelgot->size += count * sizeof_reloc; | |
1411 | else | |
1412 | { | |
1413 | relplt->size += count * sizeof_reloc; | |
1414 | relplt->reloc_count += count; | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | /* For STT_GNU_IFUNC symbol, got.plt has the real function address | |
1419 | and got has the PLT entry adddress. We will load the GOT entry | |
1420 | with the PLT entry in finish_dynamic_symbol if it is used. For | |
1421 | branch, it uses got.plt. For symbol value, if PLT is used, | |
1422 | 1. Use got.plt in a PIC object if it is forced local or not | |
1423 | dynamic. | |
1424 | 2. Use got.plt in a non-PIC object if pointer equality isn't | |
1425 | needed. | |
1426 | 3. Use got.plt in PIE. | |
1427 | 4. Use got.plt if got isn't used. | |
1428 | 5. Otherwise use got so that it can be shared among different | |
1429 | objects at run-time. | |
1430 | If PLT isn't used, always use got for symbol value. | |
1431 | We only need to relocate got entry in PIC object or in dynamic | |
1432 | executable without PLT. */ | |
1433 | if (use_plt | |
1434 | && (h->got.refcount <= 0 | |
1435 | || (bfd_link_pic (info) | |
1436 | && (h->dynindx == -1 | |
1437 | || h->forced_local)) | |
1438 | || ( | |
1439 | !h->pointer_equality_needed) | |
1440 | || htab->sgot == NULL)) | |
1441 | { | |
1442 | /* Use got.plt. */ | |
1443 | h->got.offset = (bfd_vma) -1; | |
1444 | } | |
1445 | else | |
1446 | { | |
1447 | if (!use_plt) | |
1448 | { | |
1449 | /* PLT isn't used. */ | |
1450 | h->plt.offset = (bfd_vma) -1; | |
1451 | } | |
1452 | if (h->got.refcount <= 0) | |
1453 | { | |
1454 | /* GOT isn't need when there are only relocations for static | |
1455 | pointers. */ | |
1456 | h->got.offset = (bfd_vma) -1; | |
1457 | } | |
1458 | else | |
1459 | { | |
1460 | h->got.offset = htab->sgot->size; | |
1461 | htab->sgot->size += got_entry_size; | |
1462 | /* Need to relocate the GOT entry in a PIC object or PLT isn't | |
1463 | used. Otherwise, the GOT entry will be filled with the PLT | |
1464 | entry and dynamic GOT relocation isn't needed. */ | |
1465 | if (need_dynreloc) | |
1466 | { | |
1467 | /* For non-static executable, dynamic GOT relocation is in | |
1468 | rela.got section, but for static executable, it is | |
1469 | in rela.iplt section. */ | |
1470 | if (htab->splt != NULL) | |
1471 | htab->srelgot->size += sizeof_reloc; | |
1472 | else | |
1473 | { | |
1474 | relplt->size += sizeof_reloc; | |
1475 | relplt->reloc_count++; | |
1476 | } | |
1477 | } | |
1478 | } | |
1479 | } | |
1480 | ||
1481 | return true; | |
1482 | } | |
1483 | ||
d218dba3 | 1484 | /* Allocate space in .plt, .got and associated reloc sections for |
1485 | ifunc dynamic relocs. */ | |
1486 | ||
1487 | static bool | |
6d13722a | 1488 | elfNN_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h, void *inf) |
d218dba3 | 1489 | { |
1490 | struct bfd_link_info *info; | |
1491 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
1492 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
1493 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
1494 | ||
1495 | There is no need to process bfd_link_hash_indirect symbols here | |
1496 | because we will also be presented with the concrete instance of | |
1497 | the symbol and loongarch_elf_copy_indirect_symbol () will have been | |
1498 | called to copy all relevant data from the generic to the concrete | |
1499 | symbol instance. */ | |
1500 | if (h->root.type == bfd_link_hash_indirect) | |
1501 | return true; | |
1502 | ||
1503 | if (h->root.type == bfd_link_hash_warning) | |
1504 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1505 | ||
1506 | info = (struct bfd_link_info *) inf; | |
1507 | ||
1508 | /* Since STT_GNU_IFUNC symbol must go through PLT, we handle it | |
1509 | here if it is defined and referenced in a non-shared object. */ | |
6d13722a | 1510 | if (h->type == STT_GNU_IFUNC && h->def_regular) |
bc2a35c0 | 1511 | { |
1512 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
1513 | return local_allocate_ifunc_dyn_relocs (info, h, | |
1514 | &h->dyn_relocs, | |
1515 | PLT_ENTRY_SIZE, | |
1516 | PLT_HEADER_SIZE, | |
1517 | GOT_ENTRY_SIZE, | |
1518 | false); | |
1519 | else | |
1520 | return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, | |
1521 | &h->dyn_relocs, | |
1522 | PLT_ENTRY_SIZE, | |
1523 | PLT_HEADER_SIZE, | |
1524 | GOT_ENTRY_SIZE, | |
1525 | false); | |
1526 | } | |
6d13722a | 1527 | |
d218dba3 | 1528 | return true; |
1529 | } | |
1530 | ||
1531 | /* Allocate space in .plt, .got and associated reloc sections for | |
1532 | ifunc dynamic relocs. */ | |
1533 | ||
e214f8db | 1534 | static bool |
6d13722a | 1535 | elfNN_allocate_local_ifunc_dynrelocs (void **slot, void *inf) |
e214f8db | 1536 | { |
1537 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) *slot; | |
1538 | ||
d218dba3 | 1539 | if (h->type != STT_GNU_IFUNC |
1540 | || !h->def_regular | |
1541 | || !h->ref_regular | |
1542 | || !h->forced_local | |
e214f8db | 1543 | || h->root.type != bfd_link_hash_defined) |
1544 | abort (); | |
1545 | ||
6d13722a | 1546 | return elfNN_allocate_ifunc_dynrelocs (h, inf); |
e214f8db | 1547 | } |
1548 | ||
1549 | /* Set DF_TEXTREL if we find any dynamic relocs that apply to | |
1550 | read-only sections. */ | |
1551 | ||
1552 | static bool | |
1553 | maybe_set_textrel (struct elf_link_hash_entry *h, void *info_p) | |
1554 | { | |
1555 | asection *sec; | |
1556 | ||
1557 | if (h->root.type == bfd_link_hash_indirect) | |
1558 | return true; | |
1559 | ||
1560 | sec = readonly_dynrelocs (h); | |
1561 | if (sec != NULL) | |
1562 | { | |
1563 | struct bfd_link_info *info = (struct bfd_link_info *) info_p; | |
1564 | ||
1565 | info->flags |= DF_TEXTREL; | |
1566 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT' in " | |
1567 | "read-only section `%pA'\n"), | |
1568 | sec->owner, h->root.root.string, sec); | |
1569 | ||
1570 | /* Not an error, just cut short the traversal. */ | |
1571 | return false; | |
1572 | } | |
1573 | return true; | |
1574 | } | |
1575 | ||
1576 | static bool | |
1577 | loongarch_elf_size_dynamic_sections (bfd *output_bfd, | |
1578 | struct bfd_link_info *info) | |
1579 | { | |
1580 | struct loongarch_elf_link_hash_table *htab; | |
1581 | bfd *dynobj; | |
1582 | asection *s; | |
1583 | bfd *ibfd; | |
1584 | ||
1585 | htab = loongarch_elf_hash_table (info); | |
1586 | BFD_ASSERT (htab != NULL); | |
1587 | dynobj = htab->elf.dynobj; | |
1588 | BFD_ASSERT (dynobj != NULL); | |
1589 | ||
1590 | if (htab->elf.dynamic_sections_created) | |
1591 | { | |
1592 | /* Set the contents of the .interp section to the interpreter. */ | |
1593 | if (bfd_link_executable (info) && !info->nointerp) | |
1594 | { | |
1595 | const char *interpreter; | |
e214f8db | 1596 | s = bfd_get_linker_section (dynobj, ".interp"); |
1597 | BFD_ASSERT (s != NULL); | |
c4a7e6b5 | 1598 | |
1599 | if (elf_elfheader (output_bfd)->e_ident[EI_CLASS] == ELFCLASS32) | |
e214f8db | 1600 | interpreter = "/lib32/ld.so.1"; |
c4a7e6b5 | 1601 | else if (elf_elfheader (output_bfd)->e_ident[EI_CLASS] == ELFCLASS64) |
e214f8db | 1602 | interpreter = "/lib64/ld.so.1"; |
1603 | else | |
1604 | interpreter = "/lib/ld.so.1"; | |
c4a7e6b5 | 1605 | |
e214f8db | 1606 | s->contents = (unsigned char *) interpreter; |
1607 | s->size = strlen (interpreter) + 1; | |
1608 | } | |
1609 | } | |
1610 | ||
1611 | /* Set up .got offsets for local syms, and space for local dynamic | |
1612 | relocs. */ | |
1613 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
1614 | { | |
1615 | bfd_signed_vma *local_got; | |
1616 | bfd_signed_vma *end_local_got; | |
1617 | char *local_tls_type; | |
1618 | bfd_size_type locsymcount; | |
1619 | Elf_Internal_Shdr *symtab_hdr; | |
1620 | asection *srel; | |
1621 | ||
1622 | if (!is_loongarch_elf (ibfd)) | |
1623 | continue; | |
1624 | ||
1625 | for (s = ibfd->sections; s != NULL; s = s->next) | |
1626 | { | |
1627 | struct elf_dyn_relocs *p; | |
1628 | ||
1629 | for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next) | |
1630 | { | |
1631 | p->count -= p->pc_count; | |
1632 | if (!bfd_is_abs_section (p->sec) | |
1633 | && bfd_is_abs_section (p->sec->output_section)) | |
1634 | { | |
1635 | /* Input section has been discarded, either because | |
1636 | it is a copy of a linkonce section or due to | |
1637 | linker script /DISCARD/, so we'll be discarding | |
1638 | the relocs too. */ | |
1639 | } | |
1640 | else if (0 < p->count) | |
1641 | { | |
1642 | srel = elf_section_data (p->sec)->sreloc; | |
1643 | srel->size += p->count * sizeof (ElfNN_External_Rela); | |
1644 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
1645 | info->flags |= DF_TEXTREL; | |
1646 | } | |
1647 | } | |
1648 | } | |
1649 | ||
1650 | local_got = elf_local_got_refcounts (ibfd); | |
1651 | if (!local_got) | |
1652 | continue; | |
1653 | ||
1654 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
1655 | locsymcount = symtab_hdr->sh_info; | |
1656 | end_local_got = local_got + locsymcount; | |
1657 | local_tls_type = _bfd_loongarch_elf_local_got_tls_type (ibfd); | |
1658 | s = htab->elf.sgot; | |
1659 | srel = htab->elf.srelgot; | |
1660 | for (; local_got < end_local_got; ++local_got, ++local_tls_type) | |
1661 | { | |
1662 | if (0 < *local_got) | |
1663 | { | |
1664 | *local_got = s->size; | |
e214f8db | 1665 | |
6d13722a | 1666 | /* TLS gd use two got. */ |
e214f8db | 1667 | if (*local_tls_type & GOT_TLS_GD) |
6d13722a | 1668 | s->size += GOT_ENTRY_SIZE * 2; |
1669 | else | |
1670 | /* Normal got, tls ie/ld use one got. */ | |
e214f8db | 1671 | s->size += GOT_ENTRY_SIZE; |
1672 | ||
6d13722a | 1673 | if (bfd_link_executable (info) |
1674 | && (*local_tls_type & (GOT_TLS_GD| GOT_TLS_IE))) | |
1675 | ;/* Do nothing. */ | |
1676 | else | |
1677 | { | |
1678 | srel->size += sizeof (ElfNN_External_Rela); | |
1679 | } | |
e214f8db | 1680 | } |
1681 | else | |
1682 | *local_got = MINUS_ONE; | |
1683 | } | |
1684 | } | |
1685 | ||
1686 | /* Allocate global sym .plt and .got entries, and space for global | |
1687 | sym dynamic relocs. */ | |
1688 | elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info); | |
d218dba3 | 1689 | |
1690 | /* Allocate global ifunc sym .plt and .got entries, and space for global | |
1691 | ifunc sym dynamic relocs. */ | |
6d13722a | 1692 | elf_link_hash_traverse (&htab->elf, elfNN_allocate_ifunc_dynrelocs, info); |
d218dba3 | 1693 | |
e214f8db | 1694 | /* Allocate .plt and .got entries, and space for local ifunc symbols. */ |
1695 | htab_traverse (htab->loc_hash_table, | |
6d13722a | 1696 | (void *) elfNN_allocate_local_ifunc_dynrelocs, info); |
e214f8db | 1697 | |
1698 | /* Don't allocate .got.plt section if there are no PLT. */ | |
1699 | if (htab->elf.sgotplt && htab->elf.sgotplt->size == GOTPLT_HEADER_SIZE | |
1700 | && (htab->elf.splt == NULL || htab->elf.splt->size == 0)) | |
1701 | htab->elf.sgotplt->size = 0; | |
1702 | ||
1703 | /* The check_relocs and adjust_dynamic_symbol entry points have | |
1704 | determined the sizes of the various dynamic sections. Allocate | |
1705 | memory for them. */ | |
1706 | for (s = dynobj->sections; s != NULL; s = s->next) | |
1707 | { | |
1708 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
1709 | continue; | |
1710 | ||
1711 | if (s == htab->elf.splt || s == htab->elf.iplt || s == htab->elf.sgot | |
1712 | || s == htab->elf.sgotplt || s == htab->elf.igotplt | |
1713 | || s == htab->elf.sdynbss || s == htab->elf.sdynrelro) | |
1714 | { | |
1715 | /* Strip this section if we don't need it; see the | |
1716 | comment below. */ | |
1717 | } | |
1718 | else if (strncmp (s->name, ".rela", 5) == 0) | |
1719 | { | |
1720 | if (s->size != 0) | |
1721 | { | |
1722 | /* We use the reloc_count field as a counter if we need | |
1723 | to copy relocs into the output file. */ | |
1724 | s->reloc_count = 0; | |
1725 | } | |
1726 | } | |
1727 | else | |
1728 | { | |
1729 | /* It's not one of our sections. */ | |
1730 | continue; | |
1731 | } | |
1732 | ||
1733 | if (s->size == 0) | |
1734 | { | |
1735 | /* If we don't need this section, strip it from the | |
1736 | output file. This is mostly to handle .rela.bss and | |
1737 | .rela.plt. We must create both sections in | |
1738 | create_dynamic_sections, because they must be created | |
1739 | before the linker maps input sections to output | |
1740 | sections. The linker does that before | |
1741 | adjust_dynamic_symbol is called, and it is that | |
1742 | function which decides whether anything needs to go | |
1743 | into these sections. */ | |
1744 | s->flags |= SEC_EXCLUDE; | |
1745 | continue; | |
1746 | } | |
1747 | ||
1748 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
1749 | continue; | |
1750 | ||
1751 | /* Allocate memory for the section contents. Zero the memory | |
1752 | for the benefit of .rela.plt, which has 4 unused entries | |
1753 | at the beginning, and we don't want garbage. */ | |
1754 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); | |
1755 | if (s->contents == NULL) | |
1756 | return false; | |
1757 | } | |
1758 | ||
1759 | if (elf_hash_table (info)->dynamic_sections_created) | |
1760 | { | |
1761 | /* Add some entries to the .dynamic section. We fill in the | |
1762 | values later, in loongarch_elf_finish_dynamic_sections, but we | |
1763 | must add the entries now so that we get the correct size for | |
1764 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
1765 | dynamic linker and used by the debugger. */ | |
1766 | #define add_dynamic_entry(TAG, VAL) _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
1767 | ||
1768 | if (bfd_link_executable (info)) | |
1769 | { | |
1770 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
1771 | return false; | |
1772 | } | |
1773 | ||
1774 | if (htab->elf.srelplt->size != 0) | |
1775 | { | |
1776 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
1777 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
1778 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
1779 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
1780 | return false; | |
1781 | } | |
1782 | ||
1783 | if (!add_dynamic_entry (DT_RELA, 0) | |
1784 | || !add_dynamic_entry (DT_RELASZ, 0) | |
1785 | || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela))) | |
1786 | return false; | |
1787 | ||
1788 | /* If any dynamic relocs apply to a read-only section, | |
1789 | then we need a DT_TEXTREL entry. */ | |
1790 | if ((info->flags & DF_TEXTREL) == 0) | |
1791 | elf_link_hash_traverse (&htab->elf, maybe_set_textrel, info); | |
1792 | ||
1793 | if (info->flags & DF_TEXTREL) | |
1794 | { | |
1795 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
1796 | return false; | |
1797 | /* Clear the DF_TEXTREL flag. It will be set again if we | |
1798 | write out an actual text relocation; we may not, because | |
1799 | at this point we do not know whether e.g. any .eh_frame | |
1800 | absolute relocations have been converted to PC-relative. */ | |
1801 | info->flags &= ~DF_TEXTREL; | |
1802 | } | |
1803 | } | |
1804 | #undef add_dynamic_entry | |
1805 | ||
1806 | return true; | |
1807 | } | |
1808 | ||
1809 | #define LARCH_LD_STACK_DEPTH 16 | |
1810 | static int64_t larch_opc_stack[LARCH_LD_STACK_DEPTH]; | |
1811 | static size_t larch_stack_top = 0; | |
1812 | ||
1813 | static bfd_reloc_status_type | |
1814 | loongarch_push (int64_t val) | |
1815 | { | |
1816 | if (LARCH_LD_STACK_DEPTH <= larch_stack_top) | |
1817 | return bfd_reloc_outofrange; | |
1818 | larch_opc_stack[larch_stack_top++] = val; | |
1819 | return bfd_reloc_ok; | |
1820 | } | |
1821 | ||
1822 | static bfd_reloc_status_type | |
1823 | loongarch_pop (int64_t *val) | |
1824 | { | |
1825 | if (larch_stack_top == 0) | |
1826 | return bfd_reloc_outofrange; | |
1827 | BFD_ASSERT (val); | |
1828 | *val = larch_opc_stack[--larch_stack_top]; | |
1829 | return bfd_reloc_ok; | |
1830 | } | |
1831 | ||
1832 | static bfd_reloc_status_type | |
1833 | loongarch_top (int64_t *val) | |
1834 | { | |
1835 | if (larch_stack_top == 0) | |
1836 | return bfd_reloc_outofrange; | |
1837 | BFD_ASSERT (val); | |
1838 | *val = larch_opc_stack[larch_stack_top - 1]; | |
1839 | return bfd_reloc_ok; | |
1840 | } | |
1841 | ||
1842 | static void | |
1843 | loongarch_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel) | |
1844 | { | |
6d13722a | 1845 | BFD_ASSERT (s && s->contents); |
e214f8db | 1846 | const struct elf_backend_data *bed; |
1847 | bfd_byte *loc; | |
1848 | ||
1849 | bed = get_elf_backend_data (abfd); | |
6d13722a | 1850 | if (!(s->size > s->reloc_count * bed->s->sizeof_rela)) |
1851 | BFD_ASSERT (s->size > s->reloc_count * bed->s->sizeof_rela); | |
e214f8db | 1852 | loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela); |
1853 | bed->s->swap_reloca_out (abfd, rel, loc); | |
1854 | } | |
1855 | ||
1856 | /* Check rel->r_offset in range of contents. */ | |
1857 | static bfd_reloc_status_type | |
1858 | loongarch_check_offset (const Elf_Internal_Rela *rel, | |
1859 | const asection *input_section) | |
1860 | { | |
1861 | if (0 == strcmp(input_section->name, ".text") | |
1862 | && rel->r_offset > input_section->size) | |
1863 | return bfd_reloc_overflow; | |
1864 | ||
1865 | return bfd_reloc_ok; | |
1866 | } | |
1867 | ||
e214f8db | 1868 | #define LARCH_RELOC_PERFORM_3OP(op1, op2, op3) \ |
1869 | ({ \ | |
1870 | bfd_reloc_status_type ret = loongarch_pop (&op2); \ | |
1871 | if (ret == bfd_reloc_ok) \ | |
1872 | { \ | |
1873 | ret = loongarch_pop (&op1); \ | |
1874 | if (ret == bfd_reloc_ok) \ | |
1875 | ret = loongarch_push (op3); \ | |
1876 | } \ | |
1877 | ret; \ | |
1878 | }) | |
1879 | ||
e214f8db | 1880 | static bfd_reloc_status_type |
1881 | loongarch_reloc_rewrite_imm_insn (const Elf_Internal_Rela *rel, | |
1882 | const asection *input_section ATTRIBUTE_UNUSED, | |
1883 | reloc_howto_type *howto, bfd *input_bfd, | |
748594bc | 1884 | bfd_byte *contents, bfd_vma reloc_val) |
e214f8db | 1885 | { |
e214f8db | 1886 | int bits = bfd_get_reloc_size (howto) * 8; |
1887 | uint32_t insn = bfd_get (bits, input_bfd, contents + rel->r_offset); | |
1888 | ||
748594bc | 1889 | if (!loongarch_adjust_reloc_bitsfield(howto, &reloc_val)) |
1890 | return bfd_reloc_overflow; | |
1891 | ||
1892 | insn = (insn & (uint32_t)howto->src_mask) | |
1893 | | ((insn & (~(uint32_t)howto->dst_mask)) | reloc_val); | |
1894 | ||
e214f8db | 1895 | bfd_put (bits, input_bfd, insn, contents + rel->r_offset); |
1896 | ||
1897 | return bfd_reloc_ok; | |
1898 | } | |
1899 | ||
e214f8db | 1900 | static bfd_reloc_status_type |
1901 | perform_relocation (const Elf_Internal_Rela *rel, asection *input_section, | |
1902 | reloc_howto_type *howto, bfd_vma value, | |
1903 | bfd *input_bfd, bfd_byte *contents) | |
1904 | { | |
e214f8db | 1905 | int64_t opr1, opr2, opr3; |
1906 | bfd_reloc_status_type r = bfd_reloc_ok; | |
1907 | int bits = bfd_get_reloc_size (howto) * 8; | |
1908 | ||
e214f8db | 1909 | switch (ELFNN_R_TYPE (rel->r_info)) |
1910 | { | |
1911 | case R_LARCH_SOP_PUSH_PCREL: | |
1912 | case R_LARCH_SOP_PUSH_ABSOLUTE: | |
1913 | case R_LARCH_SOP_PUSH_GPREL: | |
1914 | case R_LARCH_SOP_PUSH_TLS_TPREL: | |
1915 | case R_LARCH_SOP_PUSH_TLS_GOT: | |
1916 | case R_LARCH_SOP_PUSH_TLS_GD: | |
1917 | case R_LARCH_SOP_PUSH_PLT_PCREL: | |
1918 | r = loongarch_push (value); | |
1919 | break; | |
1920 | ||
1921 | case R_LARCH_SOP_PUSH_DUP: | |
1922 | r = loongarch_pop (&opr1); | |
1923 | if (r == bfd_reloc_ok) | |
1924 | { | |
1925 | r = loongarch_push (opr1); | |
1926 | if (r == bfd_reloc_ok) | |
1927 | r = loongarch_push (opr1); | |
1928 | } | |
1929 | break; | |
1930 | ||
1931 | case R_LARCH_SOP_ASSERT: | |
1932 | r = loongarch_pop (&opr1); | |
1933 | if (r != bfd_reloc_ok || !opr1) | |
1934 | r = bfd_reloc_notsupported; | |
1935 | break; | |
1936 | ||
1937 | case R_LARCH_SOP_NOT: | |
1938 | r = loongarch_pop (&opr1); | |
1939 | if (r == bfd_reloc_ok) | |
1940 | r = loongarch_push (!opr1); | |
1941 | break; | |
1942 | ||
1943 | case R_LARCH_SOP_SUB: | |
1944 | r = LARCH_RELOC_PERFORM_3OP (opr1, opr2, opr1 - opr2); | |
1945 | break; | |
1946 | ||
1947 | case R_LARCH_SOP_SL: | |
1948 | r = LARCH_RELOC_PERFORM_3OP (opr1, opr2, opr1 << opr2); | |
1949 | break; | |
1950 | ||
1951 | case R_LARCH_SOP_SR: | |
1952 | r = LARCH_RELOC_PERFORM_3OP (opr1, opr2, opr1 >> opr2); | |
1953 | break; | |
1954 | ||
1955 | case R_LARCH_SOP_AND: | |
1956 | r = LARCH_RELOC_PERFORM_3OP (opr1, opr2, opr1 & opr2); | |
1957 | break; | |
1958 | ||
1959 | case R_LARCH_SOP_ADD: | |
1960 | r = LARCH_RELOC_PERFORM_3OP (opr1, opr2, opr1 + opr2); | |
1961 | break; | |
1962 | ||
1963 | case R_LARCH_SOP_IF_ELSE: | |
1964 | r = loongarch_pop (&opr3); | |
1965 | if (r == bfd_reloc_ok) | |
1966 | { | |
1967 | r = loongarch_pop (&opr2); | |
1968 | if (r == bfd_reloc_ok) | |
1969 | { | |
1970 | r = loongarch_pop (&opr1); | |
1971 | if (r == bfd_reloc_ok) | |
1972 | r = loongarch_push (opr1 ? opr2 : opr3); | |
1973 | } | |
1974 | } | |
1975 | break; | |
1976 | ||
1977 | case R_LARCH_SOP_POP_32_S_10_5: | |
1978 | case R_LARCH_SOP_POP_32_S_10_12: | |
1979 | case R_LARCH_SOP_POP_32_S_10_16: | |
1980 | case R_LARCH_SOP_POP_32_S_10_16_S2: | |
6d13722a | 1981 | case R_LARCH_SOP_POP_32_S_0_5_10_16_S2: |
1982 | case R_LARCH_SOP_POP_32_S_0_10_10_16_S2: | |
e214f8db | 1983 | case R_LARCH_SOP_POP_32_S_5_20: |
e214f8db | 1984 | case R_LARCH_SOP_POP_32_U_10_12: |
748594bc | 1985 | case R_LARCH_SOP_POP_32_U: |
e214f8db | 1986 | r = loongarch_pop (&opr1); |
1987 | if (r != bfd_reloc_ok) | |
1988 | break; | |
1989 | r = loongarch_check_offset (rel, input_section); | |
1990 | if (r != bfd_reloc_ok) | |
1991 | break; | |
1992 | ||
1993 | r = loongarch_reloc_rewrite_imm_insn (rel, input_section, | |
1994 | howto, input_bfd, | |
748594bc | 1995 | contents, (bfd_vma)opr1); |
e214f8db | 1996 | break; |
1997 | ||
e214f8db | 1998 | case R_LARCH_TLS_DTPREL32: |
1999 | case R_LARCH_32: | |
2000 | case R_LARCH_TLS_DTPREL64: | |
2001 | case R_LARCH_64: | |
2002 | r = loongarch_check_offset (rel, input_section); | |
2003 | if (r != bfd_reloc_ok) | |
2004 | break; | |
2005 | ||
2006 | bfd_put (bits, input_bfd, value, contents + rel->r_offset); | |
2007 | break; | |
2008 | ||
2009 | case R_LARCH_ADD8: | |
2010 | case R_LARCH_ADD16: | |
2011 | case R_LARCH_ADD24: | |
2012 | case R_LARCH_ADD32: | |
2013 | case R_LARCH_ADD64: | |
2014 | r = loongarch_check_offset (rel, input_section); | |
2015 | if (r != bfd_reloc_ok) | |
2016 | break; | |
2017 | ||
2018 | opr1 = bfd_get (bits, input_bfd, contents + rel->r_offset); | |
2019 | bfd_put (bits, input_bfd, opr1 + value, contents + rel->r_offset); | |
2020 | break; | |
2021 | ||
2022 | case R_LARCH_SUB8: | |
2023 | case R_LARCH_SUB16: | |
2024 | case R_LARCH_SUB24: | |
2025 | case R_LARCH_SUB32: | |
2026 | case R_LARCH_SUB64: | |
2027 | r = loongarch_check_offset (rel, input_section); | |
2028 | if (r != bfd_reloc_ok) | |
2029 | break; | |
2030 | ||
2031 | opr1 = bfd_get (bits, input_bfd, contents + rel->r_offset); | |
2032 | bfd_put (bits, input_bfd, opr1 - value, contents + rel->r_offset); | |
2033 | break; | |
2034 | ||
98011207 | 2035 | /* For eh_frame and debug info. */ |
2036 | case R_LARCH_32_PCREL: | |
2037 | value -= sec_addr (input_section) + rel->r_offset; | |
2038 | value += rel->r_addend; | |
2039 | bfd_vma word = bfd_get (howto->bitsize, input_bfd, | |
2040 | contents + rel->r_offset); | |
2041 | word = (word & ~howto->dst_mask) | (value & howto->dst_mask); | |
2042 | bfd_put (howto->bitsize, input_bfd, word, contents + rel->r_offset); | |
2043 | r = bfd_reloc_ok; | |
2044 | break; | |
2045 | ||
6d13722a | 2046 | /* New reloc type. |
2047 | R_LARCH_B16 ~ R_LARCH_TLS_GD_HI20. */ | |
2048 | case R_LARCH_B16: | |
2049 | case R_LARCH_B21: | |
2050 | case R_LARCH_B26: | |
2051 | case R_LARCH_ABS_HI20: | |
2052 | case R_LARCH_ABS_LO12: | |
2053 | case R_LARCH_ABS64_LO20: | |
2054 | case R_LARCH_ABS64_HI12: | |
2055 | case R_LARCH_PCALA_HI20: | |
2056 | case R_LARCH_PCALA_LO12: | |
2057 | case R_LARCH_PCALA64_LO20: | |
2058 | case R_LARCH_PCALA64_HI12: | |
2059 | case R_LARCH_GOT_PC_HI20: | |
2060 | case R_LARCH_GOT_PC_LO12: | |
2061 | case R_LARCH_GOT64_PC_LO20: | |
2062 | case R_LARCH_GOT64_PC_HI12: | |
2063 | case R_LARCH_GOT_HI20: | |
2064 | case R_LARCH_GOT_LO12: | |
2065 | case R_LARCH_GOT64_LO20: | |
2066 | case R_LARCH_GOT64_HI12: | |
2067 | case R_LARCH_TLS_LE_HI20: | |
2068 | case R_LARCH_TLS_LE_LO12: | |
2069 | case R_LARCH_TLS_LE64_LO20: | |
2070 | case R_LARCH_TLS_LE64_HI12: | |
2071 | case R_LARCH_TLS_IE_PC_HI20: | |
2072 | case R_LARCH_TLS_IE_PC_LO12: | |
2073 | case R_LARCH_TLS_IE64_PC_LO20: | |
2074 | case R_LARCH_TLS_IE64_PC_HI12: | |
2075 | case R_LARCH_TLS_IE_HI20: | |
2076 | case R_LARCH_TLS_IE_LO12: | |
2077 | case R_LARCH_TLS_IE64_LO20: | |
2078 | case R_LARCH_TLS_IE64_HI12: | |
2079 | case R_LARCH_TLS_LD_PC_HI20: | |
2080 | case R_LARCH_TLS_LD_HI20: | |
2081 | case R_LARCH_TLS_GD_PC_HI20: | |
2082 | case R_LARCH_TLS_GD_HI20: | |
2083 | r = loongarch_check_offset (rel, input_section); | |
2084 | if (r != bfd_reloc_ok) | |
2085 | break; | |
2086 | ||
2087 | r = loongarch_reloc_rewrite_imm_insn (rel, input_section, | |
2088 | howto, input_bfd, | |
2089 | contents, value); | |
2090 | break; | |
2091 | ||
2092 | case R_LARCH_RELAX: | |
2093 | break; | |
2094 | ||
e214f8db | 2095 | default: |
2096 | r = bfd_reloc_notsupported; | |
2097 | } | |
2098 | return r; | |
2099 | } | |
2100 | ||
2101 | #define LARCH_RECENT_RELOC_QUEUE_LENGTH 72 | |
2102 | static struct | |
2103 | { | |
2104 | bfd *bfd; | |
2105 | asection *section; | |
2106 | bfd_vma r_offset; | |
2107 | int r_type; | |
2108 | bfd_vma relocation; | |
2109 | Elf_Internal_Sym *sym; | |
2110 | struct elf_link_hash_entry *h; | |
2111 | bfd_vma addend; | |
2112 | int64_t top_then; | |
2113 | } larch_reloc_queue[LARCH_RECENT_RELOC_QUEUE_LENGTH]; | |
2114 | static size_t larch_reloc_queue_head = 0; | |
2115 | static size_t larch_reloc_queue_tail = 0; | |
2116 | ||
2117 | static const char * | |
2118 | loongarch_sym_name (bfd *input_bfd, struct elf_link_hash_entry *h, | |
2119 | Elf_Internal_Sym *sym) | |
2120 | { | |
2121 | const char *ret = NULL; | |
2122 | if (sym) | |
2123 | ret = bfd_elf_string_from_elf_section (input_bfd, | |
2124 | elf_symtab_hdr (input_bfd).sh_link, | |
2125 | sym->st_name); | |
2126 | else if (h) | |
2127 | ret = h->root.root.string; | |
2128 | ||
2129 | if (ret == NULL || *ret == '\0') | |
2130 | ret = "<nameless>"; | |
2131 | return ret; | |
2132 | } | |
2133 | ||
2134 | static void | |
2135 | loongarch_record_one_reloc (bfd *abfd, asection *section, int r_type, | |
2136 | bfd_vma r_offset, Elf_Internal_Sym *sym, | |
2137 | struct elf_link_hash_entry *h, bfd_vma addend) | |
2138 | { | |
2139 | if ((larch_reloc_queue_head == 0 | |
2140 | && larch_reloc_queue_tail == LARCH_RECENT_RELOC_QUEUE_LENGTH - 1) | |
2141 | || larch_reloc_queue_head == larch_reloc_queue_tail + 1) | |
2142 | larch_reloc_queue_head = | |
2143 | (larch_reloc_queue_head + 1) % LARCH_RECENT_RELOC_QUEUE_LENGTH; | |
2144 | larch_reloc_queue[larch_reloc_queue_tail].bfd = abfd; | |
2145 | larch_reloc_queue[larch_reloc_queue_tail].section = section; | |
2146 | larch_reloc_queue[larch_reloc_queue_tail].r_offset = r_offset; | |
2147 | larch_reloc_queue[larch_reloc_queue_tail].r_type = r_type; | |
2148 | larch_reloc_queue[larch_reloc_queue_tail].sym = sym; | |
2149 | larch_reloc_queue[larch_reloc_queue_tail].h = h; | |
2150 | larch_reloc_queue[larch_reloc_queue_tail].addend = addend; | |
2151 | loongarch_top (&larch_reloc_queue[larch_reloc_queue_tail].top_then); | |
2152 | larch_reloc_queue_tail = | |
2153 | (larch_reloc_queue_tail + 1) % LARCH_RECENT_RELOC_QUEUE_LENGTH; | |
2154 | } | |
2155 | ||
2156 | static void | |
2157 | loongarch_dump_reloc_record (void (*p) (const char *fmt, ...)) | |
2158 | { | |
2159 | size_t i = larch_reloc_queue_head; | |
2160 | bfd *a_bfd = NULL; | |
2161 | asection *section = NULL; | |
2162 | bfd_vma r_offset = 0; | |
2163 | int inited = 0; | |
2164 | p ("Dump relocate record:\n"); | |
2165 | p ("stack top\t\trelocation name\t\tsymbol"); | |
2166 | while (i != larch_reloc_queue_tail) | |
2167 | { | |
2168 | if (a_bfd != larch_reloc_queue[i].bfd | |
2169 | || section != larch_reloc_queue[i].section | |
2170 | || r_offset != larch_reloc_queue[i].r_offset) | |
2171 | { | |
2172 | a_bfd = larch_reloc_queue[i].bfd; | |
2173 | section = larch_reloc_queue[i].section; | |
2174 | r_offset = larch_reloc_queue[i].r_offset; | |
2175 | p ("\nat %pB(%pA+0x%v):\n", larch_reloc_queue[i].bfd, | |
2176 | larch_reloc_queue[i].section, larch_reloc_queue[i].r_offset); | |
2177 | } | |
2178 | ||
2179 | if (!inited) | |
2180 | inited = 1, p ("...\n"); | |
2181 | ||
2182 | reloc_howto_type *howto = | |
2183 | loongarch_elf_rtype_to_howto (larch_reloc_queue[i].bfd, | |
2184 | larch_reloc_queue[i].r_type); | |
2185 | p ("0x%V %s\t`%s'", (bfd_vma) larch_reloc_queue[i].top_then, | |
2186 | howto ? howto->name : "<unknown reloc>", | |
2187 | loongarch_sym_name (larch_reloc_queue[i].bfd, larch_reloc_queue[i].h, | |
2188 | larch_reloc_queue[i].sym)); | |
2189 | ||
2190 | long addend = larch_reloc_queue[i].addend; | |
2191 | if (addend < 0) | |
2192 | p (" - %ld", -addend); | |
2193 | else if (0 < addend) | |
2194 | p (" + %ld(0x%v)", addend, larch_reloc_queue[i].addend); | |
2195 | ||
2196 | p ("\n"); | |
2197 | i = (i + 1) % LARCH_RECENT_RELOC_QUEUE_LENGTH; | |
2198 | } | |
2199 | p ("\n" | |
2200 | "-- Record dump end --\n\n"); | |
2201 | } | |
2202 | ||
e214f8db | 2203 | static bool |
2204 | loongarch_reloc_is_fatal (struct bfd_link_info *info, | |
2205 | bfd *input_bfd, | |
2206 | asection *input_section, | |
2207 | Elf_Internal_Rela *rel, | |
2208 | reloc_howto_type *howto, | |
2209 | bfd_reloc_status_type rtype, | |
2210 | bool is_undefweak, | |
2211 | const char *name, | |
2212 | const char *msg) | |
2213 | { | |
2214 | bool fatal = true; | |
2215 | switch (rtype) | |
2216 | { | |
2217 | /* 'dangerous' means we do it but can't promise it's ok | |
2218 | 'unsupport' means out of ability of relocation type | |
2219 | 'undefined' means we can't deal with the undefined symbol. */ | |
2220 | case bfd_reloc_undefined: | |
2221 | info->callbacks->undefined_symbol (info, name, input_bfd, input_section, | |
2222 | rel->r_offset, true); | |
2223 | info->callbacks->info ("%X%pB(%pA+0x%v): error: %s against %s`%s':\n%s\n", | |
2224 | input_bfd, input_section, rel->r_offset, | |
2225 | howto->name, | |
2226 | is_undefweak ? "[undefweak] " : "", name, msg); | |
2227 | break; | |
2228 | case bfd_reloc_dangerous: | |
2229 | info->callbacks->info ("%pB(%pA+0x%v): warning: %s against %s`%s':\n%s\n", | |
2230 | input_bfd, input_section, rel->r_offset, | |
2231 | howto->name, | |
2232 | is_undefweak ? "[undefweak] " : "", name, msg); | |
2233 | fatal = false; | |
2234 | break; | |
2235 | case bfd_reloc_notsupported: | |
2236 | info->callbacks->info ("%X%pB(%pA+0x%v): error: %s against %s`%s':\n%s\n", | |
2237 | input_bfd, input_section, rel->r_offset, | |
2238 | howto->name, | |
2239 | is_undefweak ? "[undefweak] " : "", name, msg); | |
2240 | break; | |
2241 | default: | |
2242 | break; | |
2243 | } | |
2244 | return fatal; | |
2245 | } | |
2246 | ||
6d13722a | 2247 | #define RELOCATE_CALC_PC32_HI20(relocation, pc) \ |
2248 | ({ \ | |
2249 | bfd_vma lo = (relocation) & ((bfd_vma)0xfff); \ | |
2250 | pc = pc & (~(bfd_vma)0xfff); \ | |
2251 | if (lo > 0x7ff) \ | |
2252 | { \ | |
2253 | relocation += 0x1000; \ | |
2254 | } \ | |
2255 | relocation &= ~(bfd_vma)0xfff; \ | |
2256 | relocation -= pc; \ | |
2257 | }) | |
2258 | ||
2259 | #define RELOCATE_CALC_PC64_HI32(relocation, pc) \ | |
2260 | ({ \ | |
2261 | bfd_vma lo = (relocation) & ((bfd_vma)0xfff); \ | |
2262 | if (lo > 0x7ff) \ | |
2263 | { \ | |
2264 | relocation -= 0x100000000; \ | |
2265 | } \ | |
2266 | relocation -= (pc & ~(bfd_vma)0xffffffff); \ | |
2267 | }) | |
e214f8db | 2268 | |
2269 | static int | |
2270 | loongarch_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info, | |
2271 | bfd *input_bfd, asection *input_section, | |
2272 | bfd_byte *contents, Elf_Internal_Rela *relocs, | |
2273 | Elf_Internal_Sym *local_syms, | |
2274 | asection **local_sections) | |
2275 | { | |
2276 | Elf_Internal_Rela *rel; | |
2277 | Elf_Internal_Rela *relend; | |
2278 | bool fatal = false; | |
2279 | asection *sreloc = elf_section_data (input_section)->sreloc; | |
2280 | struct loongarch_elf_link_hash_table *htab = loongarch_elf_hash_table (info); | |
2281 | Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_bfd); | |
2282 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
2283 | bfd_vma *local_got_offsets = elf_local_got_offsets (input_bfd); | |
2284 | bool is_pic = bfd_link_pic (info); | |
2285 | bool is_dyn = elf_hash_table (info)->dynamic_sections_created; | |
2286 | asection *plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; | |
2287 | asection *got = htab->elf.sgot; | |
2288 | ||
2289 | relend = relocs + input_section->reloc_count; | |
2290 | for (rel = relocs; rel < relend; rel++) | |
2291 | { | |
2292 | int r_type = ELFNN_R_TYPE (rel->r_info); | |
2293 | unsigned long r_symndx = ELFNN_R_SYM (rel->r_info); | |
2294 | bfd_vma pc = sec_addr (input_section) + rel->r_offset; | |
2295 | reloc_howto_type *howto = NULL; | |
2296 | asection *sec = NULL; | |
2297 | Elf_Internal_Sym *sym = NULL; | |
2298 | struct elf_link_hash_entry *h = NULL; | |
2299 | const char *name; | |
2300 | bfd_reloc_status_type r = bfd_reloc_ok; | |
2301 | bool is_ie, is_undefweak, unresolved_reloc, defined_local; | |
2302 | bool resolved_local, resolved_dynly, resolved_to_const; | |
2303 | char tls_type; | |
6d13722a | 2304 | bfd_vma relocation, off, ie_off; |
e214f8db | 2305 | int i, j; |
2306 | ||
2307 | howto = loongarch_elf_rtype_to_howto (input_bfd, r_type); | |
2308 | if (howto == NULL || r_type == R_LARCH_GNU_VTINHERIT | |
2309 | || r_type == R_LARCH_GNU_VTENTRY) | |
2310 | continue; | |
2311 | ||
2312 | /* This is a final link. */ | |
2313 | if (r_symndx < symtab_hdr->sh_info) | |
2314 | { | |
2315 | is_undefweak = false; | |
2316 | unresolved_reloc = false; | |
2317 | sym = local_syms + r_symndx; | |
2318 | sec = local_sections[r_symndx]; | |
2319 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2320 | ||
2321 | /* Relocate against local STT_GNU_IFUNC symbol. */ | |
2322 | if (!bfd_link_relocatable (info) | |
2323 | && ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC) | |
2324 | { | |
2325 | h = elfNN_loongarch_get_local_sym_hash (htab, input_bfd, rel, | |
2326 | false); | |
2327 | if (h == NULL) | |
2328 | abort (); | |
2329 | ||
2330 | /* Set STT_GNU_IFUNC symbol value. */ | |
2331 | h->root.u.def.value = sym->st_value; | |
2332 | h->root.u.def.section = sec; | |
2333 | } | |
2334 | defined_local = true; | |
2335 | resolved_local = true; | |
2336 | resolved_dynly = false; | |
2337 | resolved_to_const = false; | |
6d13722a | 2338 | |
2339 | /* Calc in funtion elf_link_input_bfd, | |
2340 | * if #define elf_backend_rela_normal to 1. */ | |
e214f8db | 2341 | if (bfd_link_relocatable (info) |
2342 | && ELF_ST_TYPE (sym->st_info) == STT_SECTION) | |
6d13722a | 2343 | continue; |
e214f8db | 2344 | } |
2345 | else | |
2346 | { | |
2347 | bool warned, ignored; | |
2348 | ||
2349 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
2350 | r_symndx, symtab_hdr, sym_hashes, | |
2351 | h, sec, relocation, | |
2352 | unresolved_reloc, warned, ignored); | |
2353 | /* Here means symbol isn't local symbol only and 'h != NULL'. */ | |
2354 | ||
2355 | /* The 'unresolved_syms_in_objects' specify how to deal with undefined | |
2356 | symbol. And 'dynamic_undefined_weak' specify what to do when | |
2357 | meeting undefweak. */ | |
2358 | ||
2359 | if ((is_undefweak = h->root.type == bfd_link_hash_undefweak)) | |
2360 | { | |
2361 | defined_local = false; | |
2362 | resolved_local = false; | |
2363 | resolved_to_const = (!is_dyn || h->dynindx == -1 | |
2364 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2365 | resolved_dynly = !resolved_local && !resolved_to_const; | |
2366 | } | |
2367 | else if (warned) | |
2368 | { | |
2369 | /* Symbol undefined offen means failed already. I don't know why | |
2370 | 'warned' here but I guess it want to continue relocating as if | |
2371 | no error occures to find other errors as more as possible. */ | |
2372 | ||
2373 | /* To avoid generating warning messages about truncated | |
2374 | relocations, set the relocation's address to be the same as | |
2375 | the start of this section. */ | |
2376 | relocation = (input_section->output_section | |
2377 | ? input_section->output_section->vma | |
2378 | : 0); | |
2379 | ||
2380 | defined_local = relocation != 0; | |
2381 | resolved_local = defined_local; | |
2382 | resolved_to_const = !resolved_local; | |
2383 | resolved_dynly = false; | |
2384 | } | |
2385 | else | |
2386 | { | |
2387 | defined_local = !unresolved_reloc && !ignored; | |
2388 | resolved_local = | |
2389 | defined_local && SYMBOL_REFERENCES_LOCAL (info, h); | |
2390 | resolved_dynly = !resolved_local; | |
2391 | resolved_to_const = !resolved_local && !resolved_dynly; | |
2392 | } | |
2393 | } | |
2394 | ||
2395 | name = loongarch_sym_name (input_bfd, h, sym); | |
2396 | ||
2397 | if (sec != NULL && discarded_section (sec)) | |
2398 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, rel, | |
2399 | 1, relend, howto, 0, contents); | |
2400 | ||
2401 | if (bfd_link_relocatable (info)) | |
2402 | continue; | |
2403 | ||
2404 | /* The r_symndx will be STN_UNDEF (zero) only for relocs against symbols | |
2405 | from removed linkonce sections, or sections discarded by a linker | |
2406 | script. Also for R_*_SOP_PUSH_ABSOLUTE and PCREL to specify const. */ | |
2407 | if (r_symndx == STN_UNDEF || bfd_is_abs_section (sec)) | |
2408 | { | |
2409 | defined_local = false; | |
2410 | resolved_local = false; | |
2411 | resolved_dynly = false; | |
2412 | resolved_to_const = true; | |
2413 | } | |
2414 | ||
6d13722a | 2415 | /* The ifunc reference generate plt. */ |
d218dba3 | 2416 | if (h && h->type == STT_GNU_IFUNC && h->plt.offset != MINUS_ONE) |
e214f8db | 2417 | { |
e214f8db | 2418 | defined_local = true; |
2419 | resolved_local = true; | |
2420 | resolved_dynly = false; | |
2421 | resolved_to_const = false; | |
2422 | relocation = sec_addr (plt) + h->plt.offset; | |
2423 | } | |
2424 | ||
2425 | unresolved_reloc = resolved_dynly; | |
2426 | ||
2427 | BFD_ASSERT (resolved_local + resolved_dynly + resolved_to_const == 1); | |
2428 | ||
d218dba3 | 2429 | /* BFD_ASSERT (!resolved_dynly || (h && h->dynindx != -1));. */ |
e214f8db | 2430 | |
2431 | BFD_ASSERT (!resolved_local || defined_local); | |
2432 | ||
2433 | is_ie = false; | |
2434 | switch (r_type) | |
2435 | { | |
2436 | case R_LARCH_MARK_PCREL: | |
2437 | case R_LARCH_MARK_LA: | |
2438 | case R_LARCH_NONE: | |
2439 | r = bfd_reloc_continue; | |
2440 | unresolved_reloc = false; | |
2441 | break; | |
2442 | ||
2443 | case R_LARCH_32: | |
2444 | case R_LARCH_64: | |
2445 | if (resolved_dynly || (is_pic && resolved_local)) | |
2446 | { | |
2447 | Elf_Internal_Rela outrel; | |
2448 | ||
2449 | /* When generating a shared object, these relocations are copied | |
2450 | into the output file to be resolved at run time. */ | |
2451 | ||
2452 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, | |
2453 | input_section, | |
2454 | rel->r_offset); | |
2455 | ||
2456 | unresolved_reloc = (!((bfd_vma) -2 <= outrel.r_offset) | |
2457 | && (input_section->flags & SEC_ALLOC)); | |
2458 | ||
2459 | outrel.r_offset += sec_addr (input_section); | |
d218dba3 | 2460 | |
bc2a35c0 | 2461 | /* A pointer point to a ifunc symbol. */ |
2462 | if (h && h->type == STT_GNU_IFUNC) | |
d218dba3 | 2463 | { |
bc2a35c0 | 2464 | if (h->dynindx == -1) |
2465 | { | |
2466 | outrel.r_info = ELFNN_R_INFO (0, R_LARCH_IRELATIVE); | |
2467 | outrel.r_addend = (h->root.u.def.value | |
2468 | + h->root.u.def.section->output_section->vma | |
2469 | + h->root.u.def.section->output_offset); | |
2470 | } | |
2471 | else | |
2472 | { | |
2473 | outrel.r_info = ELFNN_R_INFO (h->dynindx, R_LARCH_NN); | |
2474 | outrel.r_addend = 0; | |
2475 | } | |
d218dba3 | 2476 | |
bc2a35c0 | 2477 | if (SYMBOL_REFERENCES_LOCAL (info, h)) |
2478 | { | |
2479 | ||
2480 | if (htab->elf.splt != NULL) | |
2481 | sreloc = htab->elf.srelgot; | |
2482 | else | |
2483 | sreloc = htab->elf.irelplt; | |
2484 | } | |
d218dba3 | 2485 | else |
bc2a35c0 | 2486 | { |
2487 | ||
2488 | if (bfd_link_pic (info)) | |
2489 | sreloc = htab->elf.irelifunc; | |
2490 | else if (htab->elf.splt != NULL) | |
2491 | sreloc = htab->elf.srelgot; | |
2492 | else | |
2493 | sreloc = htab->elf.irelplt; | |
2494 | } | |
d218dba3 | 2495 | } |
2496 | else if (resolved_dynly) | |
e214f8db | 2497 | { |
6d13722a | 2498 | if (h->dynindx == -1) |
2499 | { | |
2500 | if (h->root.type == bfd_link_hash_undefined) | |
2501 | (*info->callbacks->undefined_symbol) | |
2502 | (info, name, input_bfd, input_section, | |
2503 | rel->r_offset, true); | |
2504 | ||
2505 | outrel.r_info = ELFNN_R_INFO (0, r_type); | |
2506 | } | |
2507 | else | |
2508 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
2509 | ||
e214f8db | 2510 | outrel.r_addend = rel->r_addend; |
2511 | } | |
2512 | else | |
2513 | { | |
2514 | outrel.r_info = ELFNN_R_INFO (0, R_LARCH_RELATIVE); | |
2515 | outrel.r_addend = relocation + rel->r_addend; | |
2516 | } | |
2517 | ||
6d13722a | 2518 | /* No alloc space of func allocate_dynrelocs. */ |
2519 | if (unresolved_reloc | |
2520 | && !(h && (h->is_weakalias || !h->dyn_relocs))) | |
e214f8db | 2521 | loongarch_elf_append_rela (output_bfd, sreloc, &outrel); |
2522 | } | |
2523 | ||
2524 | relocation += rel->r_addend; | |
2525 | break; | |
2526 | ||
2527 | case R_LARCH_ADD8: | |
2528 | case R_LARCH_ADD16: | |
2529 | case R_LARCH_ADD24: | |
2530 | case R_LARCH_ADD32: | |
2531 | case R_LARCH_ADD64: | |
2532 | case R_LARCH_SUB8: | |
2533 | case R_LARCH_SUB16: | |
2534 | case R_LARCH_SUB24: | |
2535 | case R_LARCH_SUB32: | |
2536 | case R_LARCH_SUB64: | |
2537 | if (resolved_dynly) | |
2538 | fatal = (loongarch_reloc_is_fatal | |
2539 | (info, input_bfd, input_section, rel, howto, | |
2540 | bfd_reloc_undefined, is_undefweak, name, | |
2541 | "Can't be resolved dynamically. " | |
2542 | "If this procedure is hand-written assembly,\n" | |
2543 | "there must be something like '.dword sym1 - sym2' " | |
2544 | "to generate these relocs\n" | |
2545 | "and we can't get known link-time address of " | |
2546 | "these symbols.")); | |
2547 | else | |
2548 | relocation += rel->r_addend; | |
2549 | break; | |
2550 | ||
2551 | case R_LARCH_TLS_DTPREL32: | |
2552 | case R_LARCH_TLS_DTPREL64: | |
2553 | if (resolved_dynly) | |
2554 | { | |
2555 | Elf_Internal_Rela outrel; | |
2556 | ||
2557 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, info, | |
2558 | input_section, | |
2559 | rel->r_offset); | |
2560 | unresolved_reloc = (!((bfd_vma) -2 <= outrel.r_offset) | |
2561 | && (input_section->flags & SEC_ALLOC)); | |
2562 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); | |
2563 | outrel.r_offset += sec_addr (input_section); | |
2564 | outrel.r_addend = rel->r_addend; | |
2565 | if (unresolved_reloc) | |
2566 | loongarch_elf_append_rela (output_bfd, sreloc, &outrel); | |
2567 | break; | |
2568 | } | |
2569 | ||
2570 | if (resolved_to_const) | |
2571 | fatal = loongarch_reloc_is_fatal (info, input_bfd, input_section, | |
2572 | rel, howto, | |
2573 | bfd_reloc_notsupported, | |
2574 | is_undefweak, name, | |
2575 | "Internal:"); | |
d218dba3 | 2576 | if (resolved_local) |
2577 | { | |
2578 | if (!elf_hash_table (info)->tls_sec) | |
2579 | { | |
2580 | fatal = loongarch_reloc_is_fatal (info, input_bfd, | |
2581 | input_section, rel, howto, bfd_reloc_notsupported, | |
2582 | is_undefweak, name, "TLS section not be created"); | |
2583 | } | |
2584 | else | |
2585 | relocation -= elf_hash_table (info)->tls_sec->vma; | |
2586 | } | |
2587 | else | |
2588 | { | |
2589 | fatal = loongarch_reloc_is_fatal (info, input_bfd, | |
2590 | input_section, rel, howto, bfd_reloc_undefined, | |
2591 | is_undefweak, name, | |
2592 | "TLS LE just can be resolved local only."); | |
2593 | } | |
2594 | ||
e214f8db | 2595 | break; |
2596 | ||
2597 | case R_LARCH_SOP_PUSH_TLS_TPREL: | |
2598 | if (resolved_local) | |
2599 | { | |
2600 | if (!elf_hash_table (info)->tls_sec) | |
2601 | fatal = (loongarch_reloc_is_fatal | |
2602 | (info, input_bfd, input_section, rel, howto, | |
2603 | bfd_reloc_notsupported, is_undefweak, name, | |
2604 | "TLS section not be created")); | |
2605 | else | |
2606 | relocation -= elf_hash_table (info)->tls_sec->vma; | |
2607 | } | |
2608 | else | |
2609 | fatal = (loongarch_reloc_is_fatal | |
2610 | (info, input_bfd, input_section, rel, howto, | |
2611 | bfd_reloc_undefined, is_undefweak, name, | |
2612 | "TLS LE just can be resolved local only.")); | |
2613 | break; | |
2614 | ||
2615 | case R_LARCH_SOP_PUSH_ABSOLUTE: | |
2616 | if (is_undefweak) | |
2617 | { | |
2618 | if (resolved_dynly) | |
2619 | fatal = (loongarch_reloc_is_fatal | |
2620 | (info, input_bfd, input_section, rel, howto, | |
2621 | bfd_reloc_dangerous, is_undefweak, name, | |
2622 | "Someone require us to resolve undefweak " | |
2623 | "symbol dynamically. \n" | |
2624 | "But this reloc can't be done. " | |
2625 | "I think I can't throw error " | |
2626 | "for this\n" | |
2627 | "so I resolved it to 0. " | |
2628 | "I suggest to re-compile with '-fpic'.")); | |
2629 | ||
2630 | relocation = 0; | |
2631 | unresolved_reloc = false; | |
2632 | break; | |
2633 | } | |
2634 | ||
2635 | if (resolved_to_const) | |
2636 | { | |
2637 | relocation += rel->r_addend; | |
2638 | break; | |
2639 | } | |
2640 | ||
2641 | if (is_pic) | |
2642 | { | |
2643 | fatal = (loongarch_reloc_is_fatal | |
2644 | (info, input_bfd, input_section, rel, howto, | |
2645 | bfd_reloc_notsupported, is_undefweak, name, | |
2646 | "Under PIC we don't know load address. Re-compile " | |
2647 | "with '-fpic'?")); | |
2648 | break; | |
2649 | } | |
2650 | ||
2651 | if (resolved_dynly) | |
2652 | { | |
2653 | if (!(plt && h && h->plt.offset != MINUS_ONE)) | |
2654 | { | |
2655 | fatal = (loongarch_reloc_is_fatal | |
2656 | (info, input_bfd, input_section, rel, howto, | |
2657 | bfd_reloc_undefined, is_undefweak, name, | |
2658 | "Can't be resolved dynamically. Try to re-compile " | |
2659 | "with '-fpic'?")); | |
2660 | break; | |
2661 | } | |
2662 | ||
2663 | if (rel->r_addend != 0) | |
2664 | { | |
2665 | fatal = (loongarch_reloc_is_fatal | |
2666 | (info, input_bfd, input_section, rel, howto, | |
2667 | bfd_reloc_notsupported, is_undefweak, name, | |
2668 | "Shouldn't be with r_addend.")); | |
2669 | break; | |
2670 | } | |
2671 | ||
2672 | relocation = sec_addr (plt) + h->plt.offset; | |
2673 | unresolved_reloc = false; | |
2674 | break; | |
2675 | } | |
2676 | ||
2677 | if (resolved_local) | |
2678 | { | |
2679 | relocation += rel->r_addend; | |
2680 | break; | |
2681 | } | |
2682 | ||
2683 | break; | |
2684 | ||
2685 | case R_LARCH_SOP_PUSH_PCREL: | |
2686 | case R_LARCH_SOP_PUSH_PLT_PCREL: | |
2687 | unresolved_reloc = false; | |
2688 | ||
6d13722a | 2689 | if (is_undefweak) |
e214f8db | 2690 | { |
2691 | i = 0, j = 0; | |
2692 | relocation = 0; | |
2693 | if (resolved_dynly) | |
2694 | { | |
2695 | if (h && h->plt.offset != MINUS_ONE) | |
2696 | i = 1, j = 2; | |
2697 | else | |
2698 | fatal = (loongarch_reloc_is_fatal | |
2699 | (info, input_bfd, input_section, rel, howto, | |
2700 | bfd_reloc_dangerous, is_undefweak, name, | |
2701 | "Undefweak need to be resolved dynamically, " | |
2702 | "but PLT stub doesn't represent.")); | |
2703 | } | |
2704 | } | |
2705 | else | |
2706 | { | |
2707 | if (!(defined_local || (h && h->plt.offset != MINUS_ONE))) | |
2708 | { | |
2709 | fatal = (loongarch_reloc_is_fatal | |
2710 | (info, input_bfd, input_section, rel, howto, | |
2711 | bfd_reloc_undefined, is_undefweak, name, | |
2712 | "PLT stub does not represent and " | |
2713 | "symbol not defined.")); | |
2714 | break; | |
2715 | } | |
2716 | ||
2717 | if (resolved_local) | |
2718 | i = 0, j = 2; | |
2719 | else /* if (resolved_dynly) */ | |
2720 | { | |
2721 | if (!(h && h->plt.offset != MINUS_ONE)) | |
2722 | fatal = (loongarch_reloc_is_fatal | |
2723 | (info, input_bfd, input_section, rel, howto, | |
2724 | bfd_reloc_dangerous, is_undefweak, name, | |
2725 | "Internal: PLT stub doesn't represent. " | |
2726 | "Resolve it with pcrel")); | |
2727 | i = 1, j = 3; | |
2728 | } | |
2729 | } | |
2730 | ||
2731 | for (; i < j; i++) | |
2732 | { | |
2733 | if ((i & 1) == 0 && defined_local) | |
2734 | { | |
2735 | relocation -= pc; | |
2736 | relocation += rel->r_addend; | |
2737 | break; | |
2738 | } | |
2739 | ||
2740 | if ((i & 1) && h && h->plt.offset != MINUS_ONE) | |
2741 | { | |
2742 | if (rel->r_addend != 0) | |
2743 | { | |
2744 | fatal = (loongarch_reloc_is_fatal | |
2745 | (info, input_bfd, input_section, rel, howto, | |
2746 | bfd_reloc_notsupported, is_undefweak, name, | |
2747 | "PLT shouldn't be with r_addend.")); | |
2748 | break; | |
2749 | } | |
2750 | relocation = sec_addr (plt) + h->plt.offset - pc; | |
2751 | break; | |
2752 | } | |
2753 | } | |
2754 | break; | |
2755 | ||
2756 | case R_LARCH_SOP_PUSH_GPREL: | |
2757 | unresolved_reloc = false; | |
2758 | ||
2759 | if (rel->r_addend != 0) | |
2760 | { | |
2761 | fatal = (loongarch_reloc_is_fatal | |
2762 | (info, input_bfd, input_section, rel, howto, | |
2763 | bfd_reloc_notsupported, is_undefweak, name, | |
2764 | "Shouldn't be with r_addend.")); | |
2765 | break; | |
2766 | } | |
2767 | ||
2768 | if (h != NULL) | |
2769 | { | |
6d13722a | 2770 | off = h->got.offset & (~1); |
e214f8db | 2771 | |
6d13722a | 2772 | if (h->got.offset == MINUS_ONE && h->type != STT_GNU_IFUNC) |
e214f8db | 2773 | { |
2774 | fatal = (loongarch_reloc_is_fatal | |
2775 | (info, input_bfd, input_section, rel, howto, | |
2776 | bfd_reloc_notsupported, is_undefweak, name, | |
2777 | "Internal: GOT entry doesn't represent.")); | |
2778 | break; | |
2779 | } | |
2780 | ||
d218dba3 | 2781 | /* Hidden symbol not has .got entry, only .got.plt entry |
2782 | so gprel is (plt - got). */ | |
6d13722a | 2783 | if (h->got.offset == MINUS_ONE && h->type == STT_GNU_IFUNC) |
d218dba3 | 2784 | { |
2785 | if (h->plt.offset == (bfd_vma) -1) | |
2786 | { | |
2787 | abort(); | |
2788 | } | |
2789 | ||
2790 | bfd_vma plt_index = h->plt.offset / PLT_ENTRY_SIZE; | |
2791 | off = plt_index * GOT_ENTRY_SIZE; | |
2792 | ||
2793 | if (htab->elf.splt != NULL) | |
2794 | { | |
2795 | /* Section .plt header is 2 times of plt entry. */ | |
6d13722a | 2796 | off = sec_addr (htab->elf.sgotplt) + off |
2797 | - sec_addr (htab->elf.sgot); | |
d218dba3 | 2798 | } |
2799 | else | |
2800 | { | |
2801 | /* Section iplt not has plt header. */ | |
6d13722a | 2802 | off = sec_addr (htab->elf.igotplt) + off |
2803 | - sec_addr (htab->elf.sgot); | |
d218dba3 | 2804 | } |
2805 | } | |
2806 | ||
6d13722a | 2807 | if ((h->got.offset & 1) == 0) |
e214f8db | 2808 | { |
6d13722a | 2809 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (is_dyn, |
2810 | bfd_link_pic (info), h) | |
2811 | && ((bfd_link_pic (info) | |
2812 | && SYMBOL_REFERENCES_LOCAL (info, h)))) | |
e214f8db | 2813 | { |
6d13722a | 2814 | /* This is actually a static link, or it is a |
2815 | -Bsymbolic link and the symbol is defined | |
2816 | locally, or the symbol was forced to be local | |
2817 | because of a version file. We must initialize | |
2818 | this entry in the global offset table. Since the | |
2819 | offset must always be a multiple of the word size, | |
2820 | we use the least significant bit to record whether | |
2821 | we have initialized it already. | |
2822 | ||
2823 | When doing a dynamic link, we create a rela.got | |
2824 | relocation entry to initialize the value. This | |
2825 | is done in the finish_dynamic_symbol routine. */ | |
2826 | ||
2827 | if (resolved_dynly) | |
2828 | { | |
2829 | fatal = (loongarch_reloc_is_fatal | |
2830 | (info, input_bfd, input_section, rel, howto, | |
2831 | bfd_reloc_dangerous, is_undefweak, name, | |
2832 | "Internal: here shouldn't dynamic.")); | |
2833 | } | |
e214f8db | 2834 | |
6d13722a | 2835 | if (!(defined_local || resolved_to_const)) |
2836 | { | |
2837 | fatal = (loongarch_reloc_is_fatal | |
2838 | (info, input_bfd, input_section, rel, howto, | |
2839 | bfd_reloc_undefined, is_undefweak, name, | |
2840 | "Internal: ")); | |
2841 | break; | |
2842 | } | |
e214f8db | 2843 | |
6d13722a | 2844 | asection *s; |
2845 | Elf_Internal_Rela outrel; | |
2846 | /* We need to generate a R_LARCH_RELATIVE reloc | |
2847 | for the dynamic linker. */ | |
2848 | s = htab->elf.srelgot; | |
2849 | if (!s) | |
d218dba3 | 2850 | { |
6d13722a | 2851 | fatal = loongarch_reloc_is_fatal |
2852 | (info, input_bfd, | |
2853 | input_section, rel, howto, | |
2854 | bfd_reloc_notsupported, is_undefweak, name, | |
2855 | "Internal: '.rel.got' not represent"); | |
2856 | break; | |
d218dba3 | 2857 | } |
6d13722a | 2858 | |
2859 | outrel.r_offset = sec_addr (got) + off; | |
2860 | outrel.r_info = ELFNN_R_INFO (0, R_LARCH_RELATIVE); | |
2861 | outrel.r_addend = relocation; /* Link-time addr. */ | |
2862 | loongarch_elf_append_rela (output_bfd, s, &outrel); | |
e214f8db | 2863 | } |
6d13722a | 2864 | bfd_put_NN (output_bfd, relocation, got->contents + off); |
2865 | h->got.offset |= 1; | |
e214f8db | 2866 | } |
2867 | } | |
2868 | else | |
2869 | { | |
2870 | if (!local_got_offsets) | |
2871 | { | |
2872 | fatal = (loongarch_reloc_is_fatal | |
2873 | (info, input_bfd, input_section, rel, howto, | |
2874 | bfd_reloc_notsupported, is_undefweak, name, | |
2875 | "Internal: local got offsets not reporesent.")); | |
2876 | break; | |
2877 | } | |
2878 | ||
6d13722a | 2879 | off = local_got_offsets[r_symndx] & (~1); |
e214f8db | 2880 | |
6d13722a | 2881 | if (local_got_offsets[r_symndx] == MINUS_ONE) |
e214f8db | 2882 | { |
2883 | fatal = (loongarch_reloc_is_fatal | |
2884 | (info, input_bfd, input_section, rel, howto, | |
2885 | bfd_reloc_notsupported, is_undefweak, name, | |
2886 | "Internal: GOT entry doesn't represent.")); | |
2887 | break; | |
2888 | } | |
2889 | ||
2890 | /* The offset must always be a multiple of the word size. | |
2891 | So, we can use the least significant bit to record | |
2892 | whether we have already processed this entry. */ | |
8b4d46df | 2893 | if ((local_got_offsets[r_symndx] & 1) == 0) |
e214f8db | 2894 | { |
2895 | if (is_pic) | |
2896 | { | |
2897 | asection *s; | |
2898 | Elf_Internal_Rela outrel; | |
2899 | /* We need to generate a R_LARCH_RELATIVE reloc | |
2900 | for the dynamic linker. */ | |
2901 | s = htab->elf.srelgot; | |
2902 | if (!s) | |
2903 | { | |
2904 | fatal = (loongarch_reloc_is_fatal | |
2905 | (info, input_bfd, input_section, rel, howto, | |
2906 | bfd_reloc_notsupported, is_undefweak, name, | |
2907 | "Internal: '.rel.got' not represent")); | |
2908 | break; | |
2909 | } | |
2910 | ||
2911 | outrel.r_offset = sec_addr (got) + off; | |
2912 | outrel.r_info = ELFNN_R_INFO (0, R_LARCH_RELATIVE); | |
2913 | outrel.r_addend = relocation; /* Link-time addr. */ | |
2914 | loongarch_elf_append_rela (output_bfd, s, &outrel); | |
2915 | } | |
2916 | ||
2917 | bfd_put_NN (output_bfd, relocation, got->contents + off); | |
2918 | local_got_offsets[r_symndx] |= 1; | |
2919 | } | |
2920 | } | |
2921 | relocation = off; | |
6d13722a | 2922 | |
e214f8db | 2923 | break; |
2924 | ||
2925 | case R_LARCH_SOP_PUSH_TLS_GOT: | |
2926 | case R_LARCH_SOP_PUSH_TLS_GD: | |
6d13722a | 2927 | { |
2928 | unresolved_reloc = false; | |
2929 | if (r_type == R_LARCH_SOP_PUSH_TLS_GOT) | |
2930 | is_ie = true; | |
2931 | ||
2932 | bfd_vma got_off = 0; | |
2933 | if (h != NULL) | |
2934 | { | |
2935 | got_off = h->got.offset; | |
2936 | h->got.offset |= 1; | |
2937 | } | |
2938 | else | |
2939 | { | |
2940 | got_off = local_got_offsets[r_symndx]; | |
2941 | local_got_offsets[r_symndx] |= 1; | |
2942 | } | |
2943 | ||
2944 | BFD_ASSERT (got_off != MINUS_ONE); | |
2945 | ||
2946 | ie_off = 0; | |
2947 | tls_type = _bfd_loongarch_elf_tls_type (input_bfd, h, r_symndx); | |
2948 | if ((tls_type & GOT_TLS_GD) && (tls_type & GOT_TLS_IE)) | |
2949 | ie_off = 2 * GOT_ENTRY_SIZE; | |
2950 | ||
2951 | if ((got_off & 1) == 0) | |
2952 | { | |
2953 | Elf_Internal_Rela rela; | |
2954 | asection *srel = htab->elf.srelgot; | |
2955 | bfd_vma tls_block_off = 0; | |
2956 | ||
2957 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
2958 | { | |
2959 | BFD_ASSERT (elf_hash_table (info)->tls_sec); | |
2960 | tls_block_off = relocation | |
2961 | - elf_hash_table (info)->tls_sec->vma; | |
2962 | } | |
2963 | ||
2964 | if (tls_type & GOT_TLS_GD) | |
2965 | { | |
2966 | rela.r_offset = sec_addr (got) + got_off; | |
2967 | rela.r_addend = 0; | |
2968 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
2969 | { | |
2970 | /* Local sym, used in exec, set module id 1. */ | |
2971 | if (bfd_link_executable (info)) | |
2972 | bfd_put_NN (output_bfd, 1, got->contents + got_off); | |
2973 | else | |
2974 | { | |
2975 | rela.r_info = ELFNN_R_INFO (0, | |
2976 | R_LARCH_TLS_DTPMODNN); | |
2977 | loongarch_elf_append_rela (output_bfd, srel, &rela); | |
2978 | } | |
2979 | ||
2980 | bfd_put_NN (output_bfd, tls_block_off, | |
2981 | got->contents + got_off + GOT_ENTRY_SIZE); | |
2982 | } | |
2983 | /* Dynamic resolved. */ | |
2984 | else | |
2985 | { | |
2986 | /* Dynamic relocate module id. */ | |
2987 | rela.r_info = ELFNN_R_INFO (h->dynindx, | |
2988 | R_LARCH_TLS_DTPMODNN); | |
2989 | loongarch_elf_append_rela (output_bfd, srel, &rela); | |
2990 | ||
2991 | /* Dynamic relocate offset of block. */ | |
2992 | rela.r_offset += GOT_ENTRY_SIZE; | |
2993 | rela.r_info = ELFNN_R_INFO (h->dynindx, | |
2994 | R_LARCH_TLS_DTPRELNN); | |
2995 | loongarch_elf_append_rela (output_bfd, srel, &rela); | |
2996 | } | |
2997 | } | |
2998 | if (tls_type & GOT_TLS_IE) | |
2999 | { | |
3000 | rela.r_offset = sec_addr (got) + got_off + ie_off; | |
3001 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
3002 | { | |
3003 | /* Local sym, used in exec, set module id 1. */ | |
3004 | if (!bfd_link_executable (info)) | |
3005 | { | |
3006 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_TLS_TPRELNN); | |
3007 | rela.r_addend = tls_block_off; | |
3008 | loongarch_elf_append_rela (output_bfd, srel, &rela); | |
3009 | } | |
3010 | ||
3011 | bfd_put_NN (output_bfd, tls_block_off, | |
3012 | got->contents + got_off + ie_off); | |
3013 | } | |
3014 | /* Dynamic resolved. */ | |
3015 | else | |
3016 | { | |
3017 | /* Dynamic relocate offset of block. */ | |
3018 | rela.r_info = ELFNN_R_INFO (h->dynindx, | |
3019 | R_LARCH_TLS_TPRELNN); | |
3020 | rela.r_addend = 0; | |
3021 | loongarch_elf_append_rela (output_bfd, srel, &rela); | |
3022 | } | |
3023 | } | |
3024 | } | |
3025 | ||
3026 | relocation = (got_off & (~(bfd_vma)1)) + (is_ie ? ie_off : 0); | |
3027 | } | |
3028 | break; | |
3029 | ||
3030 | /* New reloc types. */ | |
3031 | case R_LARCH_B21: | |
3032 | case R_LARCH_B26: | |
3033 | case R_LARCH_B16: | |
e214f8db | 3034 | unresolved_reloc = false; |
6d13722a | 3035 | if (is_undefweak) |
3036 | { | |
3037 | relocation = 0; | |
3038 | } | |
e214f8db | 3039 | |
6d13722a | 3040 | if (resolved_local) |
e214f8db | 3041 | { |
6d13722a | 3042 | relocation -= pc; |
3043 | relocation += rel->r_addend; | |
3044 | } | |
3045 | else if (resolved_dynly) | |
3046 | { | |
3047 | BFD_ASSERT (h | |
3048 | && (h->plt.offset != MINUS_ONE | |
3049 | || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3050 | && rel->r_addend == 0); | |
3051 | if (h && h->plt.offset == MINUS_ONE | |
3052 | && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
3053 | { | |
3054 | relocation -= pc; | |
3055 | relocation += rel->r_addend; | |
3056 | } | |
3057 | else | |
3058 | relocation = sec_addr (plt) + h->plt.offset - pc; | |
3059 | } | |
3060 | ||
3061 | break; | |
3062 | ||
3063 | case R_LARCH_ABS_HI20: | |
3064 | case R_LARCH_ABS_LO12: | |
3065 | case R_LARCH_ABS64_LO20: | |
3066 | case R_LARCH_ABS64_HI12: | |
3067 | BFD_ASSERT (!is_pic); | |
3068 | ||
3069 | if (is_undefweak) | |
3070 | { | |
3071 | BFD_ASSERT (resolved_dynly); | |
3072 | relocation = 0; | |
e214f8db | 3073 | break; |
3074 | } | |
6d13722a | 3075 | else if (resolved_to_const || resolved_local) |
3076 | { | |
3077 | relocation += rel->r_addend; | |
3078 | } | |
3079 | else if (resolved_dynly) | |
3080 | { | |
3081 | unresolved_reloc = false; | |
3082 | BFD_ASSERT ((plt && h && h->plt.offset != MINUS_ONE) | |
3083 | && rel->r_addend == 0); | |
3084 | relocation = sec_addr (plt) + h->plt.offset; | |
3085 | } | |
3086 | ||
3087 | break; | |
3088 | ||
3089 | case R_LARCH_PCALA_HI20: | |
3090 | unresolved_reloc = false; | |
3091 | if (h && h->plt.offset != MINUS_ONE) | |
3092 | relocation = sec_addr (plt) + h->plt.offset; | |
3093 | else | |
3094 | relocation += rel->r_addend; | |
e214f8db | 3095 | |
6d13722a | 3096 | RELOCATE_CALC_PC32_HI20 (relocation, pc); |
3097 | ||
3098 | break; | |
3099 | ||
3100 | case R_LARCH_PCALA_LO12: | |
3101 | /* Not support if sym_addr in 2k page edge. | |
3102 | pcalau12i pc_hi20 (sym_addr) | |
3103 | ld.w/d pc_lo12 (sym_addr) | |
3104 | ld.w/d pc_lo12 (sym_addr + x) | |
3105 | ... | |
3106 | can not calc correct address | |
3107 | if sym_addr < 0x800 && sym_addr + x >= 0x800. */ | |
3108 | ||
3109 | if (h && h->plt.offset != MINUS_ONE) | |
3110 | relocation = sec_addr (plt) + h->plt.offset; | |
3111 | else | |
3112 | relocation += rel->r_addend; | |
e214f8db | 3113 | |
27121f67 NC |
3114 | relocation &= 0xfff; |
3115 | /* Signed extend. */ | |
3116 | relocation = (relocation ^ 0x800) - 0x800; | |
3117 | ||
3118 | /* For 2G jump, generate pcalau12i, jirl. */ | |
3119 | /* If use jirl, turns to R_LARCH_B16. */ | |
3120 | uint32_t insn = bfd_get (32, input_bfd, contents + rel->r_offset); | |
3121 | if ((insn & 0x4c000000) == 0x4c000000) | |
e214f8db | 3122 | { |
27121f67 NC |
3123 | rel->r_info = ELFNN_R_INFO (r_symndx, R_LARCH_B16); |
3124 | howto = loongarch_elf_rtype_to_howto (input_bfd, R_LARCH_B16); | |
e214f8db | 3125 | } |
6d13722a | 3126 | break; |
e214f8db | 3127 | |
6d13722a | 3128 | case R_LARCH_PCALA64_LO20: |
3129 | case R_LARCH_PCALA64_HI12: | |
3130 | if (h && h->plt.offset != MINUS_ONE) | |
bc2a35c0 | 3131 | relocation = sec_addr (plt) + h->plt.offset; |
6d13722a | 3132 | else |
3133 | relocation += rel->r_addend; | |
3134 | ||
3135 | RELOCATE_CALC_PC64_HI32 (relocation, pc); | |
3136 | ||
3137 | break; | |
3138 | ||
3139 | case R_LARCH_GOT_PC_HI20: | |
3140 | case R_LARCH_GOT_HI20: | |
3141 | /* Calc got offset. */ | |
3142 | { | |
3143 | unresolved_reloc = false; | |
3144 | BFD_ASSERT (rel->r_addend == 0); | |
3145 | ||
3146 | bfd_vma got_off = 0; | |
3147 | if (h != NULL) | |
3148 | { | |
3149 | /* GOT ref or ifunc. */ | |
3150 | BFD_ASSERT (h->got.offset != MINUS_ONE | |
3151 | || h->type == STT_GNU_IFUNC); | |
3152 | ||
3153 | got_off = h->got.offset & (~(bfd_vma)1); | |
3154 | /* Hidden symbol not has got entry, | |
3155 | * only got.plt entry so it is (plt - got). */ | |
3156 | if (h->got.offset == MINUS_ONE && h->type == STT_GNU_IFUNC) | |
3157 | { | |
3158 | bfd_vma idx; | |
3159 | if (htab->elf.splt != NULL) | |
3160 | { | |
3161 | idx = (h->plt.offset - PLT_HEADER_SIZE) | |
3162 | / PLT_ENTRY_SIZE; | |
3163 | got_off = sec_addr (htab->elf.sgotplt) | |
3164 | + GOTPLT_HEADER_SIZE | |
3165 | + (idx * GOT_ENTRY_SIZE) | |
3166 | - sec_addr (htab->elf.sgot); | |
3167 | } | |
3168 | else | |
3169 | { | |
3170 | idx = h->plt.offset / PLT_ENTRY_SIZE; | |
3171 | got_off = sec_addr (htab->elf.sgotplt) | |
3172 | + (idx * GOT_ENTRY_SIZE) | |
3173 | - sec_addr (htab->elf.sgot); | |
3174 | } | |
3175 | } | |
3176 | ||
3177 | if ((h->got.offset & 1) == 0) | |
3178 | { | |
3179 | /* We need to generate a R_LARCH_RELATIVE reloc once | |
3180 | * in loongarch_elf_finish_dynamic_symbol or now, | |
3181 | * call finish_dyn && nopic | |
3182 | * or !call finish_dyn && pic. */ | |
3183 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (is_dyn, | |
3184 | bfd_link_pic (info), | |
3185 | h) | |
3186 | && bfd_link_pic (info) | |
3187 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3188 | { | |
3189 | Elf_Internal_Rela rela; | |
3190 | rela.r_offset = sec_addr (got) + got_off; | |
3191 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_RELATIVE); | |
3192 | rela.r_addend = relocation; | |
3193 | loongarch_elf_append_rela (output_bfd, | |
3194 | htab->elf.srelgot, &rela); | |
3195 | } | |
3196 | h->got.offset |= 1; | |
6224a6c2 XR |
3197 | bfd_put_NN (output_bfd, relocation, |
3198 | got->contents + got_off); | |
6d13722a | 3199 | } |
3200 | } | |
3201 | else | |
3202 | { | |
3203 | BFD_ASSERT (local_got_offsets | |
3204 | && local_got_offsets[r_symndx] != MINUS_ONE); | |
3205 | ||
3206 | got_off = local_got_offsets[r_symndx] & (~(bfd_vma)1); | |
3207 | if ((local_got_offsets[r_symndx] & 1) == 0) | |
3208 | { | |
3209 | if (bfd_link_pic (info)) | |
3210 | { | |
3211 | Elf_Internal_Rela rela; | |
3212 | rela.r_offset = sec_addr (got) + got_off; | |
3213 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_RELATIVE); | |
3214 | rela.r_addend = relocation; | |
3215 | loongarch_elf_append_rela (output_bfd, | |
3216 | htab->elf.srelgot, &rela); | |
3217 | } | |
3218 | local_got_offsets[r_symndx] |= 1; | |
3219 | } | |
6224a6c2 | 3220 | bfd_put_NN (output_bfd, relocation, got->contents + got_off); |
6d13722a | 3221 | } |
3222 | ||
6d13722a | 3223 | relocation = got_off + sec_addr (got); |
3224 | } | |
3225 | ||
3226 | if (r_type == R_LARCH_GOT_PC_HI20) | |
3227 | RELOCATE_CALC_PC32_HI20 (relocation, pc); | |
3228 | ||
3229 | break; | |
3230 | ||
3231 | case R_LARCH_GOT_PC_LO12: | |
3232 | case R_LARCH_GOT64_PC_LO20: | |
3233 | case R_LARCH_GOT64_PC_HI12: | |
3234 | case R_LARCH_GOT_LO12: | |
3235 | case R_LARCH_GOT64_LO20: | |
3236 | case R_LARCH_GOT64_HI12: | |
3237 | { | |
3238 | unresolved_reloc = false; | |
3239 | bfd_vma got_off; | |
3240 | if (h) | |
3241 | got_off = h->got.offset & (~(bfd_vma)1); | |
3242 | else | |
3243 | got_off = local_got_offsets[r_symndx] & (~(bfd_vma)1); | |
3244 | ||
3245 | if (h && h->got.offset == MINUS_ONE && h->type == STT_GNU_IFUNC) | |
3246 | { | |
3247 | bfd_vma idx; | |
3248 | if (htab->elf.splt != NULL) | |
3249 | idx = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; | |
3250 | else | |
3251 | idx = h->plt.offset / PLT_ENTRY_SIZE; | |
3252 | ||
3253 | got_off = sec_addr (htab->elf.sgotplt) | |
3254 | + GOTPLT_HEADER_SIZE | |
3255 | + (idx * GOT_ENTRY_SIZE) | |
3256 | - sec_addr (htab->elf.sgot); | |
3257 | } | |
3258 | relocation = got_off + sec_addr (got); | |
3259 | } | |
3260 | ||
3261 | if (r_type == R_LARCH_GOT_PC_LO12) | |
3262 | relocation &= (bfd_vma)0xfff; | |
3263 | else if (r_type == R_LARCH_GOT64_PC_LO20 | |
3264 | || r_type == R_LARCH_GOT64_PC_HI12) | |
3265 | RELOCATE_CALC_PC64_HI32 (relocation, pc); | |
3266 | ||
3267 | break; | |
3268 | ||
3269 | case R_LARCH_TLS_LE_HI20: | |
3270 | case R_LARCH_TLS_LE_LO12: | |
3271 | case R_LARCH_TLS_LE64_LO20: | |
3272 | case R_LARCH_TLS_LE64_HI12: | |
3273 | BFD_ASSERT (resolved_local && elf_hash_table (info)->tls_sec); | |
3274 | ||
3275 | relocation -= elf_hash_table (info)->tls_sec->vma; | |
3276 | break; | |
3277 | ||
3278 | /* TLS IE LD/GD process separately is troublesome. | |
3279 | When a symbol is both ie and LD/GD, h->got.off |= 1 | |
3280 | make only one type be relocated. We must use | |
3281 | h->got.offset |= 1 and h->got.offset |= 2 | |
3282 | diff IE and LD/GD. And all (got_off & (~(bfd_vma)1)) | |
3283 | (IE LD/GD and reusable GOT reloc) must change to | |
3284 | (got_off & (~(bfd_vma)3)), beause we use lowest 2 bits | |
3285 | as a tag. | |
3286 | Now, LD and GD is both GOT_TLS_GD type, LD seems to | |
3287 | can be omitted. */ | |
3288 | case R_LARCH_TLS_IE_PC_HI20: | |
3289 | case R_LARCH_TLS_IE_HI20: | |
3290 | case R_LARCH_TLS_LD_PC_HI20: | |
3291 | case R_LARCH_TLS_LD_HI20: | |
3292 | case R_LARCH_TLS_GD_PC_HI20: | |
3293 | case R_LARCH_TLS_GD_HI20: | |
3294 | BFD_ASSERT (rel->r_addend == 0); | |
3295 | unresolved_reloc = false; | |
3296 | ||
3297 | if (r_type == R_LARCH_TLS_IE_PC_HI20 | |
3298 | || r_type == R_LARCH_TLS_IE_HI20) | |
3299 | is_ie = true; | |
3300 | ||
3301 | bfd_vma got_off = 0; | |
e214f8db | 3302 | if (h != NULL) |
3303 | { | |
6d13722a | 3304 | got_off = h->got.offset; |
e214f8db | 3305 | h->got.offset |= 1; |
3306 | } | |
3307 | else | |
3308 | { | |
6d13722a | 3309 | got_off = local_got_offsets[r_symndx]; |
e214f8db | 3310 | local_got_offsets[r_symndx] |= 1; |
3311 | } | |
3312 | ||
6d13722a | 3313 | BFD_ASSERT (got_off != MINUS_ONE); |
e214f8db | 3314 | |
e214f8db | 3315 | ie_off = 0; |
6d13722a | 3316 | tls_type = _bfd_loongarch_elf_tls_type (input_bfd, h, r_symndx); |
e214f8db | 3317 | if ((tls_type & GOT_TLS_GD) && (tls_type & GOT_TLS_IE)) |
3318 | ie_off = 2 * GOT_ENTRY_SIZE; | |
3319 | ||
6d13722a | 3320 | if ((got_off & 1) == 0) |
e214f8db | 3321 | { |
6d13722a | 3322 | Elf_Internal_Rela rela; |
3323 | asection *relgot = htab->elf.srelgot; | |
e214f8db | 3324 | bfd_vma tls_block_off = 0; |
e214f8db | 3325 | |
6d13722a | 3326 | if (SYMBOL_REFERENCES_LOCAL (info, h)) |
e214f8db | 3327 | { |
6d13722a | 3328 | BFD_ASSERT (elf_hash_table (info)->tls_sec); |
3329 | tls_block_off = relocation | |
3330 | - elf_hash_table (info)->tls_sec->vma; | |
e214f8db | 3331 | } |
3332 | ||
3333 | if (tls_type & GOT_TLS_GD) | |
3334 | { | |
6d13722a | 3335 | rela.r_offset = sec_addr (got) + got_off; |
3336 | rela.r_addend = 0; | |
3337 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
e214f8db | 3338 | { |
6d13722a | 3339 | /* Local sym, used in exec, set module id 1. */ |
3340 | if (bfd_link_executable (info)) | |
3341 | bfd_put_NN (output_bfd, 1, got->contents + got_off); | |
3342 | else | |
3343 | { | |
3344 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_TLS_DTPMODNN); | |
3345 | loongarch_elf_append_rela (output_bfd, relgot, &rela); | |
3346 | } | |
e214f8db | 3347 | |
6d13722a | 3348 | bfd_put_NN (output_bfd, tls_block_off, |
3349 | got->contents + got_off + GOT_ENTRY_SIZE); | |
3350 | } | |
3351 | /* Dynamic resolved. */ | |
3352 | else | |
e214f8db | 3353 | { |
6d13722a | 3354 | /* Dynamic relocate module id. */ |
3355 | rela.r_info = ELFNN_R_INFO (h->dynindx, | |
3356 | R_LARCH_TLS_DTPMODNN); | |
3357 | loongarch_elf_append_rela (output_bfd, relgot, &rela); | |
3358 | ||
3359 | /* Dynamic relocate offset of block. */ | |
3360 | rela.r_offset += GOT_ENTRY_SIZE; | |
3361 | rela.r_info = ELFNN_R_INFO (h->dynindx, | |
3362 | R_LARCH_TLS_DTPRELNN); | |
3363 | loongarch_elf_append_rela (output_bfd, relgot, &rela); | |
e214f8db | 3364 | } |
3365 | } | |
e214f8db | 3366 | if (tls_type & GOT_TLS_IE) |
3367 | { | |
6d13722a | 3368 | rela.r_offset = sec_addr (got) + got_off + ie_off; |
3369 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
e214f8db | 3370 | { |
6d13722a | 3371 | /* Local sym, used in exec, set module id 1. */ |
3372 | if (!bfd_link_executable (info)) | |
d218dba3 | 3373 | { |
6d13722a | 3374 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_TLS_TPRELNN); |
3375 | rela.r_addend = tls_block_off; | |
3376 | loongarch_elf_append_rela (output_bfd, relgot, &rela); | |
d218dba3 | 3377 | } |
6d13722a | 3378 | |
3379 | bfd_put_NN (output_bfd, tls_block_off, | |
3380 | got->contents + got_off + ie_off); | |
3381 | } | |
3382 | /* Dynamic resolved. */ | |
3383 | else | |
3384 | { | |
3385 | /* Dynamic relocate offset of block. */ | |
3386 | rela.r_info = ELFNN_R_INFO (h->dynindx, | |
3387 | R_LARCH_TLS_TPRELNN); | |
3388 | rela.r_addend = 0; | |
3389 | loongarch_elf_append_rela (output_bfd, relgot, &rela); | |
e214f8db | 3390 | } |
3391 | } | |
3392 | } | |
6d13722a | 3393 | relocation = (got_off & (~(bfd_vma)1)) + sec_addr (got) |
3394 | + (is_ie ? ie_off : 0); | |
3395 | ||
3396 | if (r_type == R_LARCH_TLS_LD_PC_HI20 | |
3397 | || r_type == R_LARCH_TLS_GD_PC_HI20 | |
3398 | || r_type == R_LARCH_TLS_IE_PC_HI20) | |
3399 | RELOCATE_CALC_PC32_HI20 (relocation, pc); | |
3400 | ||
3401 | break; | |
3402 | ||
3403 | case R_LARCH_TLS_IE_PC_LO12: | |
3404 | case R_LARCH_TLS_IE64_PC_LO20: | |
3405 | case R_LARCH_TLS_IE64_PC_HI12: | |
3406 | case R_LARCH_TLS_IE_LO12: | |
3407 | case R_LARCH_TLS_IE64_LO20: | |
3408 | case R_LARCH_TLS_IE64_HI12: | |
3409 | unresolved_reloc = false; | |
3410 | ||
3411 | if (h) | |
3412 | relocation = sec_addr (got) + (h->got.offset & (~(bfd_vma)3)); | |
3413 | else | |
3414 | relocation = sec_addr (got) | |
3415 | + (local_got_offsets[r_symndx] & (~(bfd_vma)3)); | |
3416 | ||
3417 | tls_type = _bfd_loongarch_elf_tls_type (input_bfd, h, r_symndx); | |
3418 | /* Use both TLS_GD and TLS_IE. */ | |
3419 | if ((tls_type & GOT_TLS_GD) && (tls_type & GOT_TLS_IE)) | |
3420 | relocation += 2 * GOT_ENTRY_SIZE; | |
3421 | ||
3422 | if (r_type == R_LARCH_TLS_IE_PC_LO12) | |
3423 | relocation &= (bfd_vma)0xfff; | |
3424 | else if (r_type == R_LARCH_TLS_IE64_PC_LO20 | |
3425 | || r_type == R_LARCH_TLS_IE64_PC_HI12) | |
3426 | RELOCATE_CALC_PC64_HI32 (relocation, pc); | |
3427 | ||
3428 | break; | |
e214f8db | 3429 | |
6d13722a | 3430 | case R_LARCH_RELAX: |
e214f8db | 3431 | break; |
3432 | ||
3433 | default: | |
3434 | break; | |
3435 | } | |
3436 | ||
3437 | if (fatal) | |
3438 | break; | |
3439 | ||
3440 | do | |
3441 | { | |
3442 | /* 'unresolved_reloc' means we haven't done it yet. | |
3443 | We need help of dynamic linker to fix this memory location up. */ | |
3444 | if (!unresolved_reloc) | |
3445 | break; | |
3446 | ||
3447 | if (_bfd_elf_section_offset (output_bfd, info, input_section, | |
3448 | rel->r_offset) == MINUS_ONE) | |
3449 | /* WHY? May because it's invalid so skip checking. | |
6d13722a | 3450 | But why dynamic reloc a invalid section? */ |
e214f8db | 3451 | break; |
3452 | ||
3453 | if (input_section->output_section->flags & SEC_DEBUGGING) | |
3454 | { | |
3455 | fatal = (loongarch_reloc_is_fatal | |
3456 | (info, input_bfd, input_section, rel, howto, | |
3457 | bfd_reloc_dangerous, is_undefweak, name, | |
3458 | "Seems dynamic linker not process " | |
3459 | "sections 'SEC_DEBUGGING'.")); | |
3460 | } | |
3461 | if (!is_dyn) | |
3462 | break; | |
3463 | ||
3464 | if ((info->flags & DF_TEXTREL) == 0) | |
3465 | if (input_section->output_section->flags & SEC_READONLY) | |
3466 | info->flags |= DF_TEXTREL; | |
3467 | } | |
3468 | while (0); | |
3469 | ||
3470 | if (fatal) | |
3471 | break; | |
3472 | ||
3473 | loongarch_record_one_reloc (input_bfd, input_section, r_type, | |
3474 | rel->r_offset, sym, h, rel->r_addend); | |
3475 | ||
3476 | if (r != bfd_reloc_continue) | |
3477 | r = perform_relocation (rel, input_section, howto, relocation, | |
3478 | input_bfd, contents); | |
3479 | ||
3480 | switch (r) | |
3481 | { | |
3482 | case bfd_reloc_dangerous: | |
3483 | case bfd_reloc_continue: | |
3484 | case bfd_reloc_ok: | |
3485 | continue; | |
3486 | ||
3487 | case bfd_reloc_overflow: | |
3488 | /* Overflow value can't be filled in. */ | |
3489 | loongarch_dump_reloc_record (info->callbacks->info); | |
3490 | info->callbacks->reloc_overflow | |
3491 | (info, h ? &h->root : NULL, name, howto->name, rel->r_addend, | |
3492 | input_bfd, input_section, rel->r_offset); | |
3493 | break; | |
3494 | ||
3495 | case bfd_reloc_outofrange: | |
3496 | /* Stack state incorrect. */ | |
3497 | loongarch_dump_reloc_record (info->callbacks->info); | |
3498 | info->callbacks->info | |
3499 | ("%X%H: Internal stack state is incorrect.\n" | |
3500 | "Want to push to full stack or pop from empty stack?\n", | |
3501 | input_bfd, input_section, rel->r_offset); | |
3502 | break; | |
3503 | ||
3504 | case bfd_reloc_notsupported: | |
3505 | info->callbacks->info ("%X%H: Unknown relocation type.\n", input_bfd, | |
3506 | input_section, rel->r_offset); | |
3507 | break; | |
3508 | ||
3509 | default: | |
3510 | info->callbacks->info ("%X%H: Internal: unknown error.\n", input_bfd, | |
3511 | input_section, rel->r_offset); | |
3512 | break; | |
3513 | } | |
3514 | ||
3515 | fatal = true; | |
e214f8db | 3516 | } |
3517 | ||
3518 | return !fatal; | |
3519 | } | |
3520 | ||
3521 | /* Finish up dynamic symbol handling. We set the contents of various | |
3522 | dynamic sections here. */ | |
3523 | ||
3524 | static bool | |
3525 | loongarch_elf_finish_dynamic_symbol (bfd *output_bfd, | |
3526 | struct bfd_link_info *info, | |
3527 | struct elf_link_hash_entry *h, | |
3528 | Elf_Internal_Sym *sym) | |
3529 | { | |
3530 | struct loongarch_elf_link_hash_table *htab = loongarch_elf_hash_table (info); | |
3531 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
ae2e4d40 XR |
3532 | asection *rela_dyn = bfd_get_section_by_name (output_bfd, ".rela.dyn"); |
3533 | struct bfd_link_order *lo = NULL; | |
3534 | Elf_Internal_Rela *slot = NULL, *last_slot = NULL; | |
3535 | ||
3536 | if (rela_dyn) | |
3537 | lo = rela_dyn->map_head.link_order; | |
e214f8db | 3538 | |
3539 | if (h->plt.offset != MINUS_ONE) | |
3540 | { | |
3541 | size_t i, plt_idx; | |
d218dba3 | 3542 | asection *plt, *gotplt, *relplt; |
e214f8db | 3543 | bfd_vma got_address; |
3544 | uint32_t plt_entry[PLT_ENTRY_INSNS]; | |
3545 | bfd_byte *loc; | |
3546 | Elf_Internal_Rela rela; | |
ae2e4d40 | 3547 | asection *rela_sec = NULL; |
e214f8db | 3548 | |
e214f8db | 3549 | if (htab->elf.splt) |
3550 | { | |
3551 | BFD_ASSERT ((h->type == STT_GNU_IFUNC | |
3552 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3553 | || h->dynindx != -1); | |
3554 | ||
3555 | plt = htab->elf.splt; | |
3556 | gotplt = htab->elf.sgotplt; | |
bc2a35c0 | 3557 | if (h->type == STT_GNU_IFUNC && SYMBOL_REFERENCES_LOCAL (info, h)) |
3558 | relplt = htab->elf.srelgot; | |
3559 | else | |
3560 | relplt = htab->elf.srelplt; | |
d218dba3 | 3561 | plt_idx = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
e214f8db | 3562 | got_address = |
3563 | sec_addr (gotplt) + GOTPLT_HEADER_SIZE + plt_idx * GOT_ENTRY_SIZE; | |
3564 | } | |
3565 | else /* if (htab->elf.iplt) */ | |
3566 | { | |
3567 | BFD_ASSERT (h->type == STT_GNU_IFUNC | |
3568 | && SYMBOL_REFERENCES_LOCAL (info, h)); | |
3569 | ||
3570 | plt = htab->elf.iplt; | |
3571 | gotplt = htab->elf.igotplt; | |
3572 | relplt = htab->elf.irelplt; | |
d218dba3 | 3573 | plt_idx = h->plt.offset / PLT_ENTRY_SIZE; |
e214f8db | 3574 | got_address = sec_addr (gotplt) + plt_idx * GOT_ENTRY_SIZE; |
3575 | } | |
3576 | ||
3577 | /* Find out where the .plt entry should go. */ | |
3578 | loc = plt->contents + h->plt.offset; | |
3579 | ||
3580 | /* Fill in the PLT entry itself. */ | |
3581 | if (!loongarch_make_plt_entry (got_address, | |
3582 | sec_addr (plt) + h->plt.offset, | |
3583 | plt_entry)) | |
3584 | return false; | |
3585 | ||
3586 | for (i = 0; i < PLT_ENTRY_INSNS; i++) | |
3587 | bfd_put_32 (output_bfd, plt_entry[i], loc + 4 * i); | |
3588 | ||
6d13722a | 3589 | /* Fill in the initial value of the got.plt entry. */ |
e214f8db | 3590 | loc = gotplt->contents + (got_address - sec_addr (gotplt)); |
3591 | bfd_put_NN (output_bfd, sec_addr (plt), loc); | |
3592 | ||
3593 | rela.r_offset = got_address; | |
d218dba3 | 3594 | |
bc2a35c0 | 3595 | /* TRUE if this is a PLT reference to a local IFUNC. */ |
3596 | if (PLT_LOCAL_IFUNC_P (info, h) | |
3597 | && (relplt == htab->elf.srelgot | |
3598 | || relplt == htab->elf.irelplt)) | |
3599 | { | |
ae2e4d40 XR |
3600 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_IRELATIVE); |
3601 | rela.r_addend = (h->root.u.def.value | |
bc2a35c0 | 3602 | + h->root.u.def.section->output_section->vma |
3603 | + h->root.u.def.section->output_offset); | |
bc2a35c0 | 3604 | |
ae2e4d40 XR |
3605 | /* Find the space after dyn sort. */ |
3606 | while (slot == last_slot || slot->r_offset != 0) | |
bc2a35c0 | 3607 | { |
ae2e4d40 | 3608 | if (slot != last_slot) |
bc2a35c0 | 3609 | { |
ae2e4d40 XR |
3610 | slot++; |
3611 | continue; | |
bc2a35c0 | 3612 | } |
ae2e4d40 XR |
3613 | |
3614 | BFD_ASSERT (lo != NULL); | |
3615 | rela_sec = lo->u.indirect.section; | |
3616 | lo = lo->next; | |
3617 | ||
3618 | slot = (Elf_Internal_Rela *)rela_sec->contents; | |
3619 | last_slot = (Elf_Internal_Rela *)(rela_sec->contents + | |
3620 | rela_sec->size); | |
bc2a35c0 | 3621 | } |
3622 | ||
ae2e4d40 XR |
3623 | bed->s->swap_reloca_out (output_bfd, &rela, (bfd_byte *)slot); |
3624 | rela_sec->reloc_count++; | |
bc2a35c0 | 3625 | } |
3626 | else | |
3627 | { | |
3628 | /* Fill in the entry in the rela.plt section. */ | |
3629 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_LARCH_JUMP_SLOT); | |
3630 | rela.r_addend = 0; | |
3631 | loc = relplt->contents + plt_idx * sizeof (ElfNN_External_Rela); | |
3632 | bed->s->swap_reloca_out (output_bfd, &rela, loc); | |
3633 | } | |
e214f8db | 3634 | |
3635 | if (!h->def_regular) | |
3636 | { | |
3637 | /* Mark the symbol as undefined, rather than as defined in | |
3638 | the .plt section. Leave the value alone. */ | |
3639 | sym->st_shndx = SHN_UNDEF; | |
3640 | /* If the symbol is weak, we do need to clear the value. | |
3641 | Otherwise, the PLT entry would provide a definition for | |
3642 | the symbol even if the symbol wasn't defined anywhere, | |
3643 | and so the symbol would never be NULL. */ | |
3644 | if (!h->ref_regular_nonweak) | |
3645 | sym->st_value = 0; | |
3646 | } | |
3647 | } | |
3648 | ||
3649 | if (h->got.offset != MINUS_ONE | |
3650 | /* TLS got entry have been handled in elf_relocate_section. */ | |
3651 | && !(loongarch_elf_hash_entry (h)->tls_type & (GOT_TLS_GD | GOT_TLS_IE)) | |
6d13722a | 3652 | /* Have allocated got entry but not allocated rela before. */ |
e214f8db | 3653 | && !UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) |
3654 | { | |
3655 | asection *sgot, *srela; | |
3656 | Elf_Internal_Rela rela; | |
6d13722a | 3657 | bfd_vma off = h->got.offset & ~(bfd_vma)1; |
e214f8db | 3658 | |
3659 | /* This symbol has an entry in the GOT. Set it up. */ | |
e214f8db | 3660 | sgot = htab->elf.sgot; |
3661 | srela = htab->elf.srelgot; | |
3662 | BFD_ASSERT (sgot && srela); | |
3663 | ||
3664 | rela.r_offset = sec_addr (sgot) + off; | |
3665 | ||
d218dba3 | 3666 | if (h->def_regular |
3667 | && h->type == STT_GNU_IFUNC) | |
e214f8db | 3668 | { |
d218dba3 | 3669 | if(h->plt.offset == MINUS_ONE) |
3670 | { | |
3671 | if (htab->elf.splt == NULL) | |
3672 | srela = htab->elf.irelplt; | |
3673 | ||
3674 | if (SYMBOL_REFERENCES_LOCAL (info, h)) | |
3675 | { | |
3676 | asection *sec = h->root.u.def.section; | |
3677 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_IRELATIVE); | |
3678 | rela.r_addend = h->root.u.def.value + sec->output_section->vma | |
3679 | + sec->output_offset; | |
3680 | bfd_put_NN (output_bfd, 0, sgot->contents + off); | |
3681 | } | |
3682 | else | |
3683 | { | |
d218dba3 | 3684 | BFD_ASSERT (h->dynindx != -1); |
3685 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_LARCH_NN); | |
3686 | rela.r_addend = 0; | |
3687 | bfd_put_NN (output_bfd, (bfd_vma) 0, sgot->contents + off); | |
3688 | } | |
3689 | } | |
3690 | else if(bfd_link_pic (info)) | |
e214f8db | 3691 | { |
d218dba3 | 3692 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_LARCH_NN); |
3693 | rela.r_addend = 0; | |
3694 | bfd_put_NN (output_bfd, rela.r_addend, sgot->contents + off); | |
e214f8db | 3695 | } |
3696 | else | |
3697 | { | |
d218dba3 | 3698 | asection *plt; |
3699 | /* For non-shared object, we can't use .got.plt, which | |
3700 | contains the real function address if we need pointer | |
3701 | equality. We load the GOT entry with the PLT entry. */ | |
3702 | plt = htab->elf.splt ? htab->elf.splt : htab->elf.iplt; | |
3703 | bfd_put_NN (output_bfd, | |
3704 | (plt->output_section->vma | |
3705 | + plt->output_offset | |
3706 | + h->plt.offset), | |
3707 | sgot->contents + off); | |
3708 | return true; | |
e214f8db | 3709 | } |
3710 | } | |
3711 | else if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) | |
3712 | { | |
e214f8db | 3713 | asection *sec = h->root.u.def.section; |
3714 | rela.r_info = ELFNN_R_INFO (0, R_LARCH_RELATIVE); | |
3715 | rela.r_addend = (h->root.u.def.value + sec->output_section->vma | |
3716 | + sec->output_offset); | |
3717 | } | |
3718 | else | |
3719 | { | |
e214f8db | 3720 | BFD_ASSERT (h->dynindx != -1); |
3721 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_LARCH_NN); | |
3722 | rela.r_addend = 0; | |
3723 | } | |
3724 | ||
3725 | loongarch_elf_append_rela (output_bfd, srela, &rela); | |
3726 | } | |
3727 | ||
e214f8db | 3728 | /* Mark some specially defined symbols as absolute. */ |
3729 | if (h == htab->elf.hdynamic || h == htab->elf.hgot || h == htab->elf.hplt) | |
3730 | sym->st_shndx = SHN_ABS; | |
3731 | ||
3732 | return true; | |
3733 | } | |
3734 | ||
3735 | /* Finish up the dynamic sections. */ | |
3736 | ||
3737 | static bool | |
3738 | loongarch_finish_dyn (bfd *output_bfd, struct bfd_link_info *info, bfd *dynobj, | |
3739 | asection *sdyn) | |
3740 | { | |
3741 | struct loongarch_elf_link_hash_table *htab = loongarch_elf_hash_table (info); | |
3742 | const struct elf_backend_data *bed = get_elf_backend_data (output_bfd); | |
3743 | size_t dynsize = bed->s->sizeof_dyn, skipped_size = 0; | |
3744 | bfd_byte *dyncon, *dynconend; | |
3745 | ||
3746 | dynconend = sdyn->contents + sdyn->size; | |
3747 | for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize) | |
3748 | { | |
3749 | Elf_Internal_Dyn dyn; | |
3750 | asection *s; | |
3751 | int skipped = 0; | |
3752 | ||
3753 | bed->s->swap_dyn_in (dynobj, dyncon, &dyn); | |
3754 | ||
3755 | switch (dyn.d_tag) | |
3756 | { | |
3757 | case DT_PLTGOT: | |
3758 | s = htab->elf.sgotplt; | |
3759 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
3760 | break; | |
3761 | case DT_JMPREL: | |
3762 | s = htab->elf.srelplt; | |
3763 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
3764 | break; | |
3765 | case DT_PLTRELSZ: | |
3766 | s = htab->elf.srelplt; | |
3767 | dyn.d_un.d_val = s->size; | |
3768 | break; | |
3769 | case DT_TEXTREL: | |
3770 | if ((info->flags & DF_TEXTREL) == 0) | |
3771 | skipped = 1; | |
3772 | break; | |
3773 | case DT_FLAGS: | |
3774 | if ((info->flags & DF_TEXTREL) == 0) | |
3775 | dyn.d_un.d_val &= ~DF_TEXTREL; | |
3776 | break; | |
3777 | } | |
3778 | if (skipped) | |
3779 | skipped_size += dynsize; | |
3780 | else | |
3781 | bed->s->swap_dyn_out (output_bfd, &dyn, dyncon - skipped_size); | |
3782 | } | |
3783 | /* Wipe out any trailing entries if we shifted down a dynamic tag. */ | |
3784 | memset (dyncon - skipped_size, 0, skipped_size); | |
3785 | return true; | |
3786 | } | |
3787 | ||
3788 | /* Finish up local dynamic symbol handling. We set the contents of | |
3789 | various dynamic sections here. */ | |
3790 | ||
3791 | static bool | |
3792 | elfNN_loongarch_finish_local_dynamic_symbol (void **slot, void *inf) | |
3793 | { | |
3794 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) *slot; | |
3795 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
3796 | ||
3797 | return loongarch_elf_finish_dynamic_symbol (info->output_bfd, info, h, NULL); | |
3798 | } | |
3799 | ||
3800 | static bool | |
3801 | loongarch_elf_finish_dynamic_sections (bfd *output_bfd, | |
3802 | struct bfd_link_info *info) | |
3803 | { | |
3804 | bfd *dynobj; | |
3805 | asection *sdyn, *plt, *gotplt = NULL; | |
3806 | struct loongarch_elf_link_hash_table *htab; | |
3807 | ||
3808 | htab = loongarch_elf_hash_table (info); | |
3809 | BFD_ASSERT (htab); | |
3810 | dynobj = htab->elf.dynobj; | |
3811 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
3812 | ||
3813 | if (elf_hash_table (info)->dynamic_sections_created) | |
3814 | { | |
3815 | BFD_ASSERT (htab->elf.splt && sdyn); | |
3816 | ||
3817 | if (!loongarch_finish_dyn (output_bfd, info, dynobj, sdyn)) | |
3818 | return false; | |
3819 | } | |
3820 | ||
d218dba3 | 3821 | plt = htab->elf.splt; |
3822 | gotplt = htab->elf.sgotplt; | |
e214f8db | 3823 | |
3824 | if (plt && 0 < plt->size) | |
3825 | { | |
3826 | size_t i; | |
3827 | uint32_t plt_header[PLT_HEADER_INSNS]; | |
3828 | if (!loongarch_make_plt_header (sec_addr (gotplt), sec_addr (plt), | |
3829 | plt_header)) | |
3830 | return false; | |
3831 | ||
3832 | for (i = 0; i < PLT_HEADER_INSNS; i++) | |
3833 | bfd_put_32 (output_bfd, plt_header[i], plt->contents + 4 * i); | |
3834 | ||
3835 | elf_section_data (plt->output_section)->this_hdr.sh_entsize = | |
3836 | PLT_ENTRY_SIZE; | |
3837 | } | |
3838 | ||
3839 | if (htab->elf.sgotplt) | |
3840 | { | |
3841 | asection *output_section = htab->elf.sgotplt->output_section; | |
3842 | ||
3843 | if (bfd_is_abs_section (output_section)) | |
3844 | { | |
3845 | _bfd_error_handler (_("discarded output section: `%pA'"), | |
3846 | htab->elf.sgotplt); | |
3847 | return false; | |
3848 | } | |
3849 | ||
3850 | if (0 < htab->elf.sgotplt->size) | |
3851 | { | |
3852 | /* Write the first two entries in .got.plt, needed for the dynamic | |
3853 | linker. */ | |
3854 | bfd_put_NN (output_bfd, MINUS_ONE, htab->elf.sgotplt->contents); | |
3855 | ||
3856 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
3857 | htab->elf.sgotplt->contents + GOT_ENTRY_SIZE); | |
3858 | } | |
3859 | ||
3860 | elf_section_data (output_section)->this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
3861 | } | |
3862 | ||
3863 | if (htab->elf.sgot) | |
3864 | { | |
3865 | asection *output_section = htab->elf.sgot->output_section; | |
3866 | ||
3867 | if (0 < htab->elf.sgot->size) | |
3868 | { | |
3869 | /* Set the first entry in the global offset table to the address of | |
3870 | the dynamic section. */ | |
3871 | bfd_vma val = sdyn ? sec_addr (sdyn) : 0; | |
3872 | bfd_put_NN (output_bfd, val, htab->elf.sgot->contents); | |
3873 | } | |
3874 | ||
3875 | elf_section_data (output_section)->this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
3876 | } | |
3877 | ||
3878 | /* Fill PLT and GOT entries for local STT_GNU_IFUNC symbols. */ | |
3879 | htab_traverse (htab->loc_hash_table, | |
3880 | (void *) elfNN_loongarch_finish_local_dynamic_symbol, info); | |
3881 | ||
3882 | return true; | |
3883 | } | |
3884 | ||
3885 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
3886 | or (bfd_vma) -1 if it should not be included. */ | |
3887 | ||
3888 | static bfd_vma | |
3889 | loongarch_elf_plt_sym_val (bfd_vma i, const asection *plt, | |
3890 | const arelent *rel ATTRIBUTE_UNUSED) | |
3891 | { | |
3892 | return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE; | |
3893 | } | |
3894 | ||
3895 | static enum elf_reloc_type_class | |
3896 | loongarch_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3897 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3898 | const Elf_Internal_Rela *rela) | |
3899 | { | |
3900 | struct loongarch_elf_link_hash_table *htab; | |
3901 | htab = loongarch_elf_hash_table (info); | |
3902 | ||
3903 | if (htab->elf.dynsym != NULL && htab->elf.dynsym->contents != NULL) | |
3904 | { | |
3905 | /* Check relocation against STT_GNU_IFUNC symbol if there are | |
3906 | dynamic symbols. */ | |
3907 | bfd *abfd = info->output_bfd; | |
3908 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3909 | unsigned long r_symndx = ELFNN_R_SYM (rela->r_info); | |
3910 | if (r_symndx != STN_UNDEF) | |
3911 | { | |
3912 | Elf_Internal_Sym sym; | |
3913 | if (!bed->s->swap_symbol_in (abfd, | |
3914 | htab->elf.dynsym->contents | |
3915 | + r_symndx * bed->s->sizeof_sym, | |
3916 | 0, &sym)) | |
3917 | { | |
3918 | /* xgettext:c-format */ | |
3919 | _bfd_error_handler (_("%pB symbol number %lu references" | |
3920 | " nonexistent SHT_SYMTAB_SHNDX section"), | |
3921 | abfd, r_symndx); | |
3922 | /* Ideally an error class should be returned here. */ | |
3923 | } | |
3924 | else if (ELF_ST_TYPE (sym.st_info) == STT_GNU_IFUNC) | |
3925 | return reloc_class_ifunc; | |
3926 | } | |
3927 | } | |
3928 | ||
3929 | switch (ELFNN_R_TYPE (rela->r_info)) | |
3930 | { | |
3931 | case R_LARCH_IRELATIVE: | |
3932 | return reloc_class_ifunc; | |
3933 | case R_LARCH_RELATIVE: | |
3934 | return reloc_class_relative; | |
3935 | case R_LARCH_JUMP_SLOT: | |
3936 | return reloc_class_plt; | |
3937 | case R_LARCH_COPY: | |
3938 | return reloc_class_copy; | |
3939 | default: | |
3940 | return reloc_class_normal; | |
3941 | } | |
3942 | } | |
3943 | ||
3944 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
3945 | ||
3946 | static void | |
3947 | loongarch_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
3948 | struct elf_link_hash_entry *dir, | |
3949 | struct elf_link_hash_entry *ind) | |
3950 | { | |
d218dba3 | 3951 | struct elf_link_hash_entry *edir, *eind; |
e214f8db | 3952 | |
d218dba3 | 3953 | edir = dir; |
3954 | eind = ind; | |
e214f8db | 3955 | |
3956 | if (eind->dyn_relocs != NULL) | |
3957 | { | |
3958 | if (edir->dyn_relocs != NULL) | |
3959 | { | |
3960 | struct elf_dyn_relocs **pp; | |
3961 | struct elf_dyn_relocs *p; | |
3962 | ||
3963 | /* Add reloc counts against the indirect sym to the direct sym | |
3964 | list. Merge any entries against the same section. */ | |
3965 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
3966 | { | |
3967 | struct elf_dyn_relocs *q; | |
3968 | ||
3969 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
3970 | if (q->sec == p->sec) | |
3971 | { | |
3972 | q->pc_count += p->pc_count; | |
3973 | q->count += p->count; | |
3974 | *pp = p->next; | |
3975 | break; | |
3976 | } | |
3977 | if (q == NULL) | |
3978 | pp = &p->next; | |
3979 | } | |
3980 | *pp = edir->dyn_relocs; | |
3981 | } | |
3982 | ||
3983 | edir->dyn_relocs = eind->dyn_relocs; | |
3984 | eind->dyn_relocs = NULL; | |
3985 | } | |
3986 | ||
3987 | if (ind->root.type == bfd_link_hash_indirect && dir->got.refcount < 0) | |
3988 | { | |
d218dba3 | 3989 | loongarch_elf_hash_entry(edir)->tls_type |
3990 | = loongarch_elf_hash_entry(eind)->tls_type; | |
3991 | loongarch_elf_hash_entry(eind)->tls_type = GOT_UNKNOWN; | |
e214f8db | 3992 | } |
3993 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
3994 | } | |
3995 | ||
3996 | #define PRSTATUS_SIZE 0x1d8 | |
3997 | #define PRSTATUS_OFFSET_PR_CURSIG 0xc | |
3998 | #define PRSTATUS_OFFSET_PR_PID 0x20 | |
3999 | #define ELF_GREGSET_T_SIZE 0x168 | |
4000 | #define PRSTATUS_OFFSET_PR_REG 0x70 | |
4001 | ||
4002 | /* Support for core dump NOTE sections. */ | |
4003 | ||
4004 | static bool | |
4005 | loongarch_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) | |
4006 | { | |
4007 | switch (note->descsz) | |
4008 | { | |
4009 | default: | |
4010 | return false; | |
4011 | ||
4012 | /* The sizeof (struct elf_prstatus) on Linux/LoongArch. */ | |
4013 | case PRSTATUS_SIZE: | |
4014 | /* pr_cursig */ | |
4015 | elf_tdata (abfd)->core->signal = | |
4016 | bfd_get_16 (abfd, note->descdata + PRSTATUS_OFFSET_PR_CURSIG); | |
4017 | ||
4018 | /* pr_pid */ | |
4019 | elf_tdata (abfd)->core->lwpid = | |
4020 | bfd_get_32 (abfd, note->descdata + PRSTATUS_OFFSET_PR_PID); | |
4021 | break; | |
4022 | } | |
4023 | ||
4024 | /* Make a ".reg/999" section. */ | |
4025 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", ELF_GREGSET_T_SIZE, | |
4026 | note->descpos | |
4027 | + PRSTATUS_OFFSET_PR_REG); | |
4028 | } | |
4029 | ||
4030 | #define PRPSINFO_SIZE 0x88 | |
4031 | #define PRPSINFO_OFFSET_PR_PID 0x18 | |
4032 | #define PRPSINFO_OFFSET_PR_FNAME 0x28 | |
4033 | #define PRPSINFO_SIZEOF_PR_FNAME 0x10 | |
4034 | #define PRPSINFO_OFFSET_PR_PS_ARGS 0x38 | |
4035 | #define PRPSINFO_SIZEOF_PR_PS_ARGS 0x50 | |
4036 | ||
e214f8db | 4037 | static bool |
4038 | loongarch_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) | |
4039 | { | |
4040 | switch (note->descsz) | |
4041 | { | |
4042 | default: | |
4043 | return false; | |
4044 | ||
4045 | /* The sizeof (prpsinfo_t) on Linux/LoongArch. */ | |
4046 | case PRPSINFO_SIZE: | |
4047 | /* pr_pid */ | |
4048 | elf_tdata (abfd)->core->pid = | |
4049 | bfd_get_32 (abfd, note->descdata + PRPSINFO_OFFSET_PR_PID); | |
4050 | ||
4051 | /* pr_fname */ | |
4052 | elf_tdata (abfd)->core->program = | |
4053 | _bfd_elfcore_strndup (abfd, note->descdata + PRPSINFO_OFFSET_PR_FNAME, | |
4054 | PRPSINFO_SIZEOF_PR_FNAME); | |
4055 | ||
4056 | /* pr_psargs */ | |
4057 | elf_tdata (abfd)->core->command = | |
4058 | _bfd_elfcore_strndup (abfd, note->descdata + PRPSINFO_OFFSET_PR_PS_ARGS, | |
4059 | PRPSINFO_SIZEOF_PR_PS_ARGS); | |
4060 | break; | |
4061 | } | |
4062 | ||
4063 | /* Note that for some reason, a spurious space is tacked | |
4064 | onto the end of the args in some (at least one anyway) | |
4065 | implementations, so strip it off if it exists. */ | |
4066 | ||
4067 | { | |
4068 | char *command = elf_tdata (abfd)->core->command; | |
4069 | int n = strlen (command); | |
4070 | ||
4071 | if (0 < n && command[n - 1] == ' ') | |
4072 | command[n - 1] = '\0'; | |
4073 | } | |
4074 | ||
4075 | return true; | |
4076 | } | |
4077 | ||
4078 | /* Set the right mach type. */ | |
4079 | static bool | |
4080 | loongarch_elf_object_p (bfd *abfd) | |
4081 | { | |
4082 | /* There are only two mach types in LoongArch currently. */ | |
4083 | if (strcmp (abfd->xvec->name, "elf64-loongarch") == 0) | |
4084 | bfd_default_set_arch_mach (abfd, bfd_arch_loongarch, bfd_mach_loongarch64); | |
4085 | else | |
4086 | bfd_default_set_arch_mach (abfd, bfd_arch_loongarch, bfd_mach_loongarch32); | |
4087 | return true; | |
4088 | } | |
4089 | ||
4090 | static asection * | |
4091 | loongarch_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info, | |
4092 | Elf_Internal_Rela *rel, | |
4093 | struct elf_link_hash_entry *h, | |
4094 | Elf_Internal_Sym *sym) | |
4095 | { | |
4096 | if (h != NULL) | |
4097 | switch (ELFNN_R_TYPE (rel->r_info)) | |
4098 | { | |
4099 | case R_LARCH_GNU_VTINHERIT: | |
4100 | case R_LARCH_GNU_VTENTRY: | |
4101 | return NULL; | |
4102 | } | |
4103 | ||
4104 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
4105 | } | |
4106 | ||
e6f601b7 | 4107 | /* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For |
4108 | executable PLT slots where the executable never takes the address of those | |
4109 | functions, the function symbols are not added to the hash table. */ | |
4110 | ||
4111 | static bool | |
4112 | elf_loongarch64_hash_symbol (struct elf_link_hash_entry *h) | |
4113 | { | |
4114 | if (h->plt.offset != (bfd_vma) -1 | |
4115 | && !h->def_regular | |
4116 | && !h->pointer_equality_needed) | |
4117 | return false; | |
4118 | ||
4119 | return _bfd_elf_hash_symbol (h); | |
4120 | } | |
4121 | ||
e214f8db | 4122 | #define TARGET_LITTLE_SYM loongarch_elfNN_vec |
4123 | #define TARGET_LITTLE_NAME "elfNN-loongarch" | |
4124 | #define ELF_ARCH bfd_arch_loongarch | |
4125 | #define ELF_TARGET_ID LARCH_ELF_DATA | |
4126 | #define ELF_MACHINE_CODE EM_LOONGARCH | |
4127 | #define ELF_MAXPAGESIZE 0x4000 | |
4128 | #define bfd_elfNN_bfd_reloc_type_lookup loongarch_reloc_type_lookup | |
4129 | #define bfd_elfNN_bfd_link_hash_table_create \ | |
4130 | loongarch_elf_link_hash_table_create | |
4131 | #define bfd_elfNN_bfd_reloc_name_lookup loongarch_reloc_name_lookup | |
4132 | #define elf_info_to_howto_rel NULL /* Fall through to elf_info_to_howto. */ | |
4133 | #define elf_info_to_howto loongarch_info_to_howto_rela | |
4134 | #define bfd_elfNN_bfd_merge_private_bfd_data \ | |
4135 | elfNN_loongarch_merge_private_bfd_data | |
4136 | ||
4137 | #define elf_backend_reloc_type_class loongarch_reloc_type_class | |
4138 | #define elf_backend_copy_indirect_symbol loongarch_elf_copy_indirect_symbol | |
4139 | #define elf_backend_create_dynamic_sections \ | |
4140 | loongarch_elf_create_dynamic_sections | |
4141 | #define elf_backend_check_relocs loongarch_elf_check_relocs | |
4142 | #define elf_backend_adjust_dynamic_symbol loongarch_elf_adjust_dynamic_symbol | |
4143 | #define elf_backend_size_dynamic_sections loongarch_elf_size_dynamic_sections | |
4144 | #define elf_backend_relocate_section loongarch_elf_relocate_section | |
4145 | #define elf_backend_finish_dynamic_symbol loongarch_elf_finish_dynamic_symbol | |
4146 | #define elf_backend_finish_dynamic_sections \ | |
4147 | loongarch_elf_finish_dynamic_sections | |
4148 | #define elf_backend_object_p loongarch_elf_object_p | |
4149 | #define elf_backend_gc_mark_hook loongarch_elf_gc_mark_hook | |
4150 | #define elf_backend_plt_sym_val loongarch_elf_plt_sym_val | |
4151 | #define elf_backend_grok_prstatus loongarch_elf_grok_prstatus | |
4152 | #define elf_backend_grok_psinfo loongarch_elf_grok_psinfo | |
e6f601b7 | 4153 | #define elf_backend_hash_symbol elf_loongarch64_hash_symbol |
e214f8db | 4154 | |
4155 | #include "elfNN-target.h" |