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6e712424 PI |
1 | /* KVX-specific support for NN-bit ELF. |
2 | Copyright (C) 2009-2023 Free Software Foundation, Inc. | |
3 | Contributed by Kalray SA. | |
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 "sysdep.h" | |
22 | #include "bfd.h" | |
23 | #include "libiberty.h" | |
24 | #include "libbfd.h" | |
25 | #include "elf-bfd.h" | |
26 | #include "bfdlink.h" | |
27 | #include "objalloc.h" | |
28 | #include "elf/kvx.h" | |
29 | #include "elfxx-kvx.h" | |
30 | ||
31 | #define ARCH_SIZE NN | |
32 | ||
33 | #if ARCH_SIZE == 64 | |
34 | #define LOG_FILE_ALIGN 3 | |
35 | #endif | |
36 | ||
37 | #if ARCH_SIZE == 32 | |
38 | #define LOG_FILE_ALIGN 2 | |
39 | #endif | |
40 | ||
41 | #define IS_KVX_TLS_RELOC(R_TYPE) \ | |
42 | ((R_TYPE) == BFD_RELOC_KVX_S37_TLS_LE_LO10 \ | |
43 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_LE_UP27 \ | |
44 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_LE_LO10 \ | |
45 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_LE_UP27 \ | |
46 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_LE_EX6 \ | |
47 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_DTPOFF_LO10 \ | |
48 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_DTPOFF_UP27 \ | |
49 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_DTPOFF_LO10 \ | |
50 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_DTPOFF_UP27 \ | |
51 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_DTPOFF_EX6 \ | |
52 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_IE_LO10 \ | |
53 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_IE_UP27 \ | |
54 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_IE_LO10 \ | |
55 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_IE_UP27 \ | |
56 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_IE_EX6 \ | |
57 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_GD_LO10 \ | |
58 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_GD_UP27 \ | |
59 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_GD_LO10 \ | |
60 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_GD_UP27 \ | |
61 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_GD_EX6 \ | |
62 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_LD_LO10 \ | |
63 | || (R_TYPE) == BFD_RELOC_KVX_S37_TLS_LD_UP27 \ | |
64 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_LD_LO10 \ | |
65 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_LD_UP27 \ | |
66 | || (R_TYPE) == BFD_RELOC_KVX_S43_TLS_LD_EX6 \ | |
67 | ) | |
68 | ||
69 | #define IS_KVX_TLS_RELAX_RELOC(R_TYPE) 0 | |
70 | ||
71 | #define ELIMINATE_COPY_RELOCS 0 | |
72 | ||
73 | /* Return size of a relocation entry. HTAB is the bfd's | |
74 | elf_kvx_link_hash_entry. */ | |
75 | #define RELOC_SIZE(HTAB) (sizeof (ElfNN_External_Rela)) | |
76 | ||
77 | /* GOT Entry size - 8 bytes in ELF64 and 4 bytes in ELF32. */ | |
78 | #define GOT_ENTRY_SIZE (ARCH_SIZE / 8) | |
79 | #define PLT_ENTRY_SIZE (32) | |
80 | ||
81 | #define PLT_SMALL_ENTRY_SIZE (4*4) | |
82 | ||
83 | /* Encoding of the nop instruction */ | |
84 | #define INSN_NOP 0x00f0037f | |
85 | ||
86 | #define kvx_compute_jump_table_size(htab) \ | |
87 | (((htab)->root.srelplt == NULL) ? 0 \ | |
88 | : (htab)->root.srelplt->reloc_count * GOT_ENTRY_SIZE) | |
89 | ||
90 | static const bfd_byte elfNN_kvx_small_plt0_entry[PLT_ENTRY_SIZE] = | |
91 | { | |
92 | /* FIXME KVX: no first entry, not used yet */ | |
93 | 0 | |
94 | }; | |
95 | ||
96 | /* Per function entry in a procedure linkage table looks like this | |
97 | if the distance between the PLTGOT and the PLT is < 4GB use | |
98 | these PLT entries. */ | |
99 | static const bfd_byte elfNN_kvx_small_plt_entry[PLT_SMALL_ENTRY_SIZE] = | |
100 | { | |
101 | 0x10, 0x00, 0xc4, 0x0f, /* get $r16 = $pc ;; */ | |
102 | #if ARCH_SIZE == 32 | |
103 | 0x10, 0x00, 0x40, 0xb0, /* lwz $r16 = 0[$r16] ;; */ | |
104 | #else | |
105 | 0x10, 0x00, 0x40, 0xb8, /* ld $r16 = 0[$r16] ;; */ | |
106 | #endif | |
107 | 0x00, 0x00, 0x00, 0x18, /* upper 27 bits for LSU */ | |
108 | 0x10, 0x00, 0xd8, 0x0f, /* igoto $r16 ;; */ | |
109 | }; | |
110 | ||
111 | /* Long stub use 43bits format of make. */ | |
112 | static const uint32_t elfNN_kvx_long_branch_stub[] = | |
113 | { | |
114 | 0xe0400000, /* make $r16 = LO10<emm43> EX6<imm43> */ | |
115 | 0x00000000, /* UP27<imm43> ;; */ | |
116 | 0x0fd80010, /* igoto "r16 ;; */ | |
117 | }; | |
118 | ||
119 | #define elf_info_to_howto elfNN_kvx_info_to_howto | |
120 | #define elf_info_to_howto_rel elfNN_kvx_info_to_howto | |
121 | ||
122 | #define KVX_ELF_ABI_VERSION 0 | |
123 | ||
124 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value. */ | |
125 | #define ALL_ONES (~ (bfd_vma) 0) | |
126 | ||
127 | /* Indexed by the bfd interal reloc enumerators. | |
128 | Therefore, the table needs to be synced with BFD_RELOC_KVX_* | |
129 | in reloc.c. */ | |
130 | ||
131 | #define KVX_KV3_V1_KV3_V2_KV4_V1 | |
132 | #include "elfxx-kvx-relocs.h" | |
133 | #undef KVX_KV3_V1_KV3_V2_KV4_V1 | |
134 | ||
135 | /* Given HOWTO, return the bfd internal relocation enumerator. */ | |
136 | ||
137 | static bfd_reloc_code_real_type | |
138 | elfNN_kvx_bfd_reloc_from_howto (reloc_howto_type *howto) | |
139 | { | |
140 | const int size = (int) ARRAY_SIZE (elf_kvx_howto_table); | |
141 | const ptrdiff_t offset = howto - elf_kvx_howto_table; | |
142 | ||
143 | if (offset >= 0 && offset < size) | |
144 | return BFD_RELOC_KVX_RELOC_START + offset + 1; | |
145 | ||
146 | return BFD_RELOC_KVX_RELOC_START + 1; | |
147 | } | |
148 | ||
149 | /* Given R_TYPE, return the bfd internal relocation enumerator. */ | |
150 | ||
151 | static bfd_reloc_code_real_type | |
152 | elfNN_kvx_bfd_reloc_from_type (bfd *abfd ATTRIBUTE_UNUSED, unsigned int r_type) | |
153 | { | |
154 | static bool initialized_p = false; | |
155 | /* Indexed by R_TYPE, values are offsets in the howto_table. */ | |
156 | static unsigned int offsets[R_KVX_end]; | |
157 | ||
158 | if (!initialized_p) | |
159 | { | |
160 | unsigned int i; | |
161 | ||
162 | for (i = 0; i < ARRAY_SIZE (elf_kvx_howto_table); ++i) | |
d530ba0a | 163 | offsets[elf_kvx_howto_table[i].type] = i; |
6e712424 PI |
164 | |
165 | initialized_p = true; | |
166 | } | |
167 | ||
168 | /* PR 17512: file: b371e70a. */ | |
169 | if (r_type >= R_KVX_end) | |
170 | { | |
171 | bfd_set_error (bfd_error_bad_value); | |
172 | return BFD_RELOC_KVX_RELOC_END; | |
173 | } | |
174 | ||
175 | return (BFD_RELOC_KVX_RELOC_START + 1) + offsets[r_type]; | |
176 | } | |
177 | ||
178 | struct elf_kvx_reloc_map | |
179 | { | |
180 | bfd_reloc_code_real_type from; | |
181 | bfd_reloc_code_real_type to; | |
182 | }; | |
183 | ||
184 | /* Map bfd generic reloc to KVX-specific reloc. */ | |
185 | static const struct elf_kvx_reloc_map elf_kvx_reloc_map[] = | |
186 | { | |
187 | {BFD_RELOC_NONE, BFD_RELOC_KVX_NONE}, | |
188 | ||
189 | /* Basic data relocations. */ | |
190 | {BFD_RELOC_CTOR, BFD_RELOC_KVX_NN}, | |
191 | {BFD_RELOC_64, BFD_RELOC_KVX_64}, | |
192 | {BFD_RELOC_32, BFD_RELOC_KVX_32}, | |
193 | {BFD_RELOC_16, BFD_RELOC_KVX_16}, | |
194 | {BFD_RELOC_8, BFD_RELOC_KVX_8}, | |
195 | ||
196 | {BFD_RELOC_64_PCREL, BFD_RELOC_KVX_64_PCREL}, | |
197 | {BFD_RELOC_32_PCREL, BFD_RELOC_KVX_32_PCREL}, | |
198 | }; | |
199 | ||
200 | /* Given the bfd internal relocation enumerator in CODE, return the | |
201 | corresponding howto entry. */ | |
202 | ||
203 | static reloc_howto_type * | |
204 | elfNN_kvx_howto_from_bfd_reloc (bfd_reloc_code_real_type code) | |
205 | { | |
206 | unsigned int i; | |
207 | ||
208 | /* Convert bfd generic reloc to KVX-specific reloc. */ | |
209 | if (code < BFD_RELOC_KVX_RELOC_START || code > BFD_RELOC_KVX_RELOC_END) | |
210 | for (i = 0; i < ARRAY_SIZE (elf_kvx_reloc_map) ; i++) | |
211 | if (elf_kvx_reloc_map[i].from == code) | |
212 | { | |
213 | code = elf_kvx_reloc_map[i].to; | |
214 | break; | |
215 | } | |
216 | ||
217 | if (code > BFD_RELOC_KVX_RELOC_START && code < BFD_RELOC_KVX_RELOC_END) | |
218 | return &elf_kvx_howto_table[code - (BFD_RELOC_KVX_RELOC_START + 1)]; | |
219 | ||
220 | return NULL; | |
221 | } | |
222 | ||
223 | static reloc_howto_type * | |
224 | elfNN_kvx_howto_from_type (bfd *abfd, unsigned int r_type) | |
225 | { | |
226 | bfd_reloc_code_real_type val; | |
227 | reloc_howto_type *howto; | |
228 | ||
229 | #if ARCH_SIZE == 32 | |
230 | if (r_type > 256) | |
231 | { | |
232 | bfd_set_error (bfd_error_bad_value); | |
233 | return NULL; | |
234 | } | |
235 | #endif | |
236 | ||
237 | val = elfNN_kvx_bfd_reloc_from_type (abfd, r_type); | |
238 | howto = elfNN_kvx_howto_from_bfd_reloc (val); | |
239 | ||
240 | if (howto != NULL) | |
241 | return howto; | |
242 | ||
243 | bfd_set_error (bfd_error_bad_value); | |
244 | return NULL; | |
245 | } | |
246 | ||
247 | static bool | |
248 | elfNN_kvx_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc, | |
d530ba0a | 249 | Elf_Internal_Rela *elf_reloc) |
6e712424 PI |
250 | { |
251 | unsigned int r_type; | |
252 | ||
253 | r_type = ELFNN_R_TYPE (elf_reloc->r_info); | |
254 | bfd_reloc->howto = elfNN_kvx_howto_from_type (abfd, r_type); | |
255 | ||
256 | if (bfd_reloc->howto == NULL) | |
257 | { | |
258 | /* xgettext:c-format */ | |
d530ba0a AM |
259 | _bfd_error_handler (_("%pB: unsupported relocation type %#x"), |
260 | abfd, r_type); | |
6e712424 PI |
261 | return false; |
262 | } | |
263 | return true; | |
264 | } | |
265 | ||
266 | static reloc_howto_type * | |
267 | elfNN_kvx_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
d530ba0a | 268 | bfd_reloc_code_real_type code) |
6e712424 PI |
269 | { |
270 | reloc_howto_type *howto = elfNN_kvx_howto_from_bfd_reloc (code); | |
271 | ||
272 | if (howto != NULL) | |
273 | return howto; | |
274 | ||
275 | bfd_set_error (bfd_error_bad_value); | |
276 | return NULL; | |
277 | } | |
278 | ||
279 | static reloc_howto_type * | |
280 | elfNN_kvx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
d530ba0a | 281 | const char *r_name) |
6e712424 PI |
282 | { |
283 | unsigned int i; | |
284 | ||
285 | for (i = 0; i < ARRAY_SIZE (elf_kvx_howto_table); ++i) | |
286 | if (elf_kvx_howto_table[i].name != NULL | |
287 | && strcasecmp (elf_kvx_howto_table[i].name, r_name) == 0) | |
288 | return &elf_kvx_howto_table[i]; | |
289 | ||
290 | return NULL; | |
291 | } | |
292 | ||
293 | #define TARGET_LITTLE_SYM kvx_elfNN_vec | |
294 | #define TARGET_LITTLE_NAME "elfNN-kvx" | |
295 | ||
296 | /* The linker script knows the section names for placement. | |
297 | The entry_names are used to do simple name mangling on the stubs. | |
298 | Given a function name, and its type, the stub can be found. The | |
299 | name can be changed. The only requirement is the %s be present. */ | |
300 | #define STUB_ENTRY_NAME "__%s_veneer" | |
301 | ||
302 | /* The name of the dynamic interpreter. This is put in the .interp | |
303 | section. */ | |
304 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" | |
305 | ||
306 | ||
307 | /* PCREL 27 is signed-extended and scaled by 4 */ | |
308 | #define KVX_MAX_FWD_CALL_OFFSET \ | |
309 | (((1 << 26) - 1) << 2) | |
310 | #define KVX_MAX_BWD_CALL_OFFSET \ | |
311 | (-((1 << 26) << 2)) | |
312 | ||
313 | /* Check that the destination of the call is within the PCREL27 | |
314 | range. */ | |
315 | static int | |
316 | kvx_valid_call_p (bfd_vma value, bfd_vma place) | |
317 | { | |
318 | bfd_signed_vma offset = (bfd_signed_vma) (value - place); | |
319 | return (offset <= KVX_MAX_FWD_CALL_OFFSET | |
320 | && offset >= KVX_MAX_BWD_CALL_OFFSET); | |
321 | } | |
322 | ||
323 | /* Section name for stubs is the associated section name plus this | |
324 | string. */ | |
325 | #define STUB_SUFFIX ".stub" | |
326 | ||
327 | enum elf_kvx_stub_type | |
328 | { | |
329 | kvx_stub_none, | |
330 | kvx_stub_long_branch, | |
331 | }; | |
332 | ||
333 | struct elf_kvx_stub_hash_entry | |
334 | { | |
335 | /* Base hash table entry structure. */ | |
336 | struct bfd_hash_entry root; | |
337 | ||
338 | /* The stub section. */ | |
339 | asection *stub_sec; | |
340 | ||
341 | /* Offset within stub_sec of the beginning of this stub. */ | |
342 | bfd_vma stub_offset; | |
343 | ||
344 | /* Given the symbol's value and its section we can determine its final | |
345 | value when building the stubs (so the stub knows where to jump). */ | |
346 | bfd_vma target_value; | |
347 | asection *target_section; | |
348 | ||
349 | enum elf_kvx_stub_type stub_type; | |
350 | ||
351 | /* The symbol table entry, if any, that this was derived from. */ | |
352 | struct elf_kvx_link_hash_entry *h; | |
353 | ||
354 | /* Destination symbol type */ | |
355 | unsigned char st_type; | |
356 | ||
357 | /* Where this stub is being called from, or, in the case of combined | |
358 | stub sections, the first input section in the group. */ | |
359 | asection *id_sec; | |
360 | ||
361 | /* The name for the local symbol at the start of this stub. The | |
362 | stub name in the hash table has to be unique; this does not, so | |
363 | it can be friendlier. */ | |
364 | char *output_name; | |
365 | }; | |
366 | ||
367 | /* Used to build a map of a section. This is required for mixed-endian | |
368 | code/data. */ | |
369 | ||
370 | typedef struct elf_elf_section_map | |
371 | { | |
372 | bfd_vma vma; | |
373 | char type; | |
374 | } | |
375 | elf_kvx_section_map; | |
376 | ||
377 | ||
378 | typedef struct _kvx_elf_section_data | |
379 | { | |
380 | struct bfd_elf_section_data elf; | |
381 | unsigned int mapcount; | |
382 | unsigned int mapsize; | |
383 | elf_kvx_section_map *map; | |
384 | } | |
385 | _kvx_elf_section_data; | |
386 | ||
387 | #define elf_kvx_section_data(sec) \ | |
388 | ((_kvx_elf_section_data *) elf_section_data (sec)) | |
389 | ||
390 | struct elf_kvx_local_symbol | |
391 | { | |
392 | unsigned int got_type; | |
393 | bfd_signed_vma got_refcount; | |
394 | bfd_vma got_offset; | |
395 | }; | |
396 | ||
397 | struct elf_kvx_obj_tdata | |
398 | { | |
399 | struct elf_obj_tdata root; | |
400 | ||
401 | /* local symbol descriptors */ | |
402 | struct elf_kvx_local_symbol *locals; | |
403 | ||
404 | /* Zero to warn when linking objects with incompatible enum sizes. */ | |
405 | int no_enum_size_warning; | |
406 | ||
407 | /* Zero to warn when linking objects with incompatible wchar_t sizes. */ | |
408 | int no_wchar_size_warning; | |
409 | }; | |
410 | ||
411 | #define elf_kvx_tdata(bfd) \ | |
412 | ((struct elf_kvx_obj_tdata *) (bfd)->tdata.any) | |
413 | ||
414 | #define elf_kvx_locals(bfd) (elf_kvx_tdata (bfd)->locals) | |
415 | ||
416 | #define is_kvx_elf(bfd) \ | |
417 | (bfd_get_flavour (bfd) == bfd_target_elf_flavour \ | |
418 | && elf_tdata (bfd) != NULL \ | |
419 | && elf_object_id (bfd) == KVX_ELF_DATA) | |
420 | ||
421 | static bool | |
422 | elfNN_kvx_mkobject (bfd *abfd) | |
423 | { | |
424 | return bfd_elf_allocate_object (abfd, sizeof (struct elf_kvx_obj_tdata), | |
425 | KVX_ELF_DATA); | |
426 | } | |
427 | ||
428 | #define elf_kvx_hash_entry(ent) \ | |
429 | ((struct elf_kvx_link_hash_entry *)(ent)) | |
430 | ||
431 | #define GOT_UNKNOWN 0 | |
432 | #define GOT_NORMAL 1 | |
433 | ||
434 | #define GOT_TLS_GD 2 | |
435 | #define GOT_TLS_IE 4 | |
436 | #define GOT_TLS_LD 8 | |
437 | ||
438 | /* KVX ELF linker hash entry. */ | |
439 | struct elf_kvx_link_hash_entry | |
440 | { | |
441 | struct elf_link_hash_entry root; | |
442 | ||
443 | /* Since PLT entries have variable size, we need to record the | |
444 | index into .got.plt instead of recomputing it from the PLT | |
445 | offset. */ | |
446 | bfd_signed_vma plt_got_offset; | |
447 | ||
448 | /* Bit mask representing the type of GOT entry(s) if any required by | |
449 | this symbol. */ | |
450 | unsigned int got_type; | |
451 | ||
452 | /* A pointer to the most recently used stub hash entry against this | |
453 | symbol. */ | |
454 | struct elf_kvx_stub_hash_entry *stub_cache; | |
455 | }; | |
456 | ||
457 | /* Get the KVX elf linker hash table from a link_info structure. */ | |
458 | #define elf_kvx_hash_table(info) \ | |
459 | ((struct elf_kvx_link_hash_table *) ((info)->hash)) | |
460 | ||
461 | #define kvx_stub_hash_lookup(table, string, create, copy) \ | |
462 | ((struct elf_kvx_stub_hash_entry *) \ | |
463 | bfd_hash_lookup ((table), (string), (create), (copy))) | |
464 | ||
465 | /* KVX ELF linker hash table. */ | |
466 | struct elf_kvx_link_hash_table | |
467 | { | |
468 | /* The main hash table. */ | |
469 | struct elf_link_hash_table root; | |
470 | ||
471 | /* Nonzero to force PIC branch veneers. */ | |
472 | int pic_veneer; | |
473 | ||
474 | /* The number of bytes in the initial entry in the PLT. */ | |
475 | bfd_size_type plt_header_size; | |
476 | ||
477 | /* The number of bytes in the subsequent PLT etries. */ | |
478 | bfd_size_type plt_entry_size; | |
479 | ||
480 | /* The bytes of the subsequent PLT entry. */ | |
481 | const bfd_byte *plt_entry; | |
482 | ||
483 | /* Short-cuts to get to dynamic linker sections. */ | |
484 | asection *sdynbss; | |
485 | asection *srelbss; | |
486 | ||
487 | /* Small local sym cache. */ | |
488 | struct sym_cache sym_cache; | |
489 | ||
490 | /* For convenience in allocate_dynrelocs. */ | |
491 | bfd *obfd; | |
492 | ||
493 | /* The amount of space used by the reserved portion of the sgotplt | |
494 | section, plus whatever space is used by the jump slots. */ | |
495 | bfd_vma sgotplt_jump_table_size; | |
496 | ||
497 | /* The stub hash table. */ | |
498 | struct bfd_hash_table stub_hash_table; | |
499 | ||
500 | /* Linker stub bfd. */ | |
501 | bfd *stub_bfd; | |
502 | ||
503 | /* Linker call-backs. */ | |
504 | asection *(*add_stub_section) (const char *, asection *); | |
505 | void (*layout_sections_again) (void); | |
506 | ||
507 | /* Array to keep track of which stub sections have been created, and | |
508 | information on stub grouping. */ | |
509 | struct map_stub | |
510 | { | |
511 | /* This is the section to which stubs in the group will be | |
512 | attached. */ | |
513 | asection *link_sec; | |
514 | /* The stub section. */ | |
515 | asection *stub_sec; | |
516 | } *stub_group; | |
517 | ||
518 | /* Assorted information used by elfNN_kvx_size_stubs. */ | |
519 | unsigned int bfd_count; | |
520 | unsigned int top_index; | |
521 | asection **input_list; | |
522 | }; | |
523 | ||
524 | /* Create an entry in an KVX ELF linker hash table. */ | |
525 | ||
526 | static struct bfd_hash_entry * | |
527 | elfNN_kvx_link_hash_newfunc (struct bfd_hash_entry *entry, | |
d530ba0a AM |
528 | struct bfd_hash_table *table, |
529 | const char *string) | |
6e712424 PI |
530 | { |
531 | struct elf_kvx_link_hash_entry *ret = | |
532 | (struct elf_kvx_link_hash_entry *) entry; | |
533 | ||
534 | /* Allocate the structure if it has not already been allocated by a | |
535 | subclass. */ | |
536 | if (ret == NULL) | |
537 | ret = bfd_hash_allocate (table, | |
538 | sizeof (struct elf_kvx_link_hash_entry)); | |
539 | if (ret == NULL) | |
540 | return (struct bfd_hash_entry *) ret; | |
541 | ||
542 | /* Call the allocation method of the superclass. */ | |
543 | ret = ((struct elf_kvx_link_hash_entry *) | |
544 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
545 | table, string)); | |
546 | if (ret != NULL) | |
547 | { | |
548 | ret->got_type = GOT_UNKNOWN; | |
549 | ret->plt_got_offset = (bfd_vma) - 1; | |
550 | ret->stub_cache = NULL; | |
551 | } | |
552 | ||
553 | return (struct bfd_hash_entry *) ret; | |
554 | } | |
555 | ||
556 | /* Initialize an entry in the stub hash table. */ | |
557 | ||
558 | static struct bfd_hash_entry * | |
559 | stub_hash_newfunc (struct bfd_hash_entry *entry, | |
560 | struct bfd_hash_table *table, const char *string) | |
561 | { | |
562 | /* Allocate the structure if it has not already been allocated by a | |
563 | subclass. */ | |
564 | if (entry == NULL) | |
565 | { | |
566 | entry = bfd_hash_allocate (table, | |
567 | sizeof (struct | |
568 | elf_kvx_stub_hash_entry)); | |
569 | if (entry == NULL) | |
570 | return entry; | |
571 | } | |
572 | ||
573 | /* Call the allocation method of the superclass. */ | |
574 | entry = bfd_hash_newfunc (entry, table, string); | |
575 | if (entry != NULL) | |
576 | { | |
577 | struct elf_kvx_stub_hash_entry *eh; | |
578 | ||
579 | /* Initialize the local fields. */ | |
580 | eh = (struct elf_kvx_stub_hash_entry *) entry; | |
581 | eh->stub_sec = NULL; | |
582 | eh->stub_offset = 0; | |
583 | eh->target_value = 0; | |
584 | eh->target_section = NULL; | |
585 | eh->stub_type = kvx_stub_none; | |
586 | eh->h = NULL; | |
587 | eh->id_sec = NULL; | |
588 | } | |
589 | ||
590 | return entry; | |
591 | } | |
592 | ||
593 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
594 | ||
595 | static void | |
596 | elfNN_kvx_copy_indirect_symbol (struct bfd_link_info *info, | |
d530ba0a AM |
597 | struct elf_link_hash_entry *dir, |
598 | struct elf_link_hash_entry *ind) | |
6e712424 PI |
599 | { |
600 | struct elf_kvx_link_hash_entry *edir, *eind; | |
601 | ||
602 | edir = (struct elf_kvx_link_hash_entry *) dir; | |
603 | eind = (struct elf_kvx_link_hash_entry *) ind; | |
604 | ||
605 | if (ind->root.type == bfd_link_hash_indirect) | |
606 | { | |
607 | /* Copy over PLT info. */ | |
608 | if (dir->got.refcount <= 0) | |
609 | { | |
610 | edir->got_type = eind->got_type; | |
611 | eind->got_type = GOT_UNKNOWN; | |
612 | } | |
613 | } | |
614 | ||
615 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
616 | } | |
617 | ||
618 | /* Destroy a KVX elf linker hash table. */ | |
619 | ||
620 | static void | |
621 | elfNN_kvx_link_hash_table_free (bfd *obfd) | |
622 | { | |
623 | struct elf_kvx_link_hash_table *ret | |
624 | = (struct elf_kvx_link_hash_table *) obfd->link.hash; | |
625 | ||
626 | bfd_hash_table_free (&ret->stub_hash_table); | |
627 | _bfd_elf_link_hash_table_free (obfd); | |
628 | } | |
629 | ||
630 | /* Create a KVX elf linker hash table. */ | |
631 | ||
632 | static struct bfd_link_hash_table * | |
633 | elfNN_kvx_link_hash_table_create (bfd *abfd) | |
634 | { | |
635 | struct elf_kvx_link_hash_table *ret; | |
636 | bfd_size_type amt = sizeof (struct elf_kvx_link_hash_table); | |
637 | ||
638 | ret = bfd_zmalloc (amt); | |
639 | if (ret == NULL) | |
640 | return NULL; | |
641 | ||
642 | if (!_bfd_elf_link_hash_table_init | |
643 | (&ret->root, abfd, elfNN_kvx_link_hash_newfunc, | |
644 | sizeof (struct elf_kvx_link_hash_entry), KVX_ELF_DATA)) | |
645 | { | |
646 | free (ret); | |
647 | return NULL; | |
648 | } | |
649 | ||
650 | ret->plt_header_size = PLT_ENTRY_SIZE; | |
651 | ret->plt_entry_size = PLT_SMALL_ENTRY_SIZE; | |
652 | ret->plt_entry = elfNN_kvx_small_plt_entry; | |
653 | ||
654 | ret->obfd = abfd; | |
655 | ||
656 | if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc, | |
657 | sizeof (struct elf_kvx_stub_hash_entry))) | |
658 | { | |
659 | _bfd_elf_link_hash_table_free (abfd); | |
660 | return NULL; | |
661 | } | |
662 | ||
663 | ret->root.root.hash_table_free = elfNN_kvx_link_hash_table_free; | |
664 | ||
665 | return &ret->root.root; | |
666 | } | |
667 | ||
668 | static bfd_reloc_status_type | |
669 | kvx_relocate (unsigned int r_type, bfd *input_bfd, asection *input_section, | |
d530ba0a | 670 | bfd_vma offset, bfd_vma value) |
6e712424 PI |
671 | { |
672 | reloc_howto_type *howto; | |
6e712424 PI |
673 | |
674 | howto = elfNN_kvx_howto_from_type (input_bfd, r_type); | |
6e712424 | 675 | r_type = elfNN_kvx_bfd_reloc_from_type (input_bfd, r_type); |
6e712424 | 676 | return _bfd_kvx_elf_put_addend (input_bfd, |
d530ba0a AM |
677 | input_section->contents + offset, r_type, |
678 | howto, value); | |
6e712424 PI |
679 | } |
680 | ||
681 | /* Determine the type of stub needed, if any, for a call. */ | |
682 | ||
683 | static enum elf_kvx_stub_type | |
684 | kvx_type_of_stub (asection *input_sec, | |
d530ba0a AM |
685 | const Elf_Internal_Rela *rel, |
686 | asection *sym_sec, | |
687 | unsigned char st_type, | |
688 | bfd_vma destination) | |
6e712424 PI |
689 | { |
690 | bfd_vma location; | |
691 | bfd_signed_vma branch_offset; | |
692 | unsigned int r_type; | |
693 | enum elf_kvx_stub_type stub_type = kvx_stub_none; | |
694 | ||
695 | if (st_type != STT_FUNC | |
696 | && (sym_sec == input_sec)) | |
697 | return stub_type; | |
698 | ||
699 | /* Determine where the call point is. */ | |
700 | location = (input_sec->output_offset | |
d530ba0a | 701 | + input_sec->output_section->vma + rel->r_offset); |
6e712424 PI |
702 | |
703 | branch_offset = (bfd_signed_vma) (destination - location); | |
704 | ||
705 | r_type = ELFNN_R_TYPE (rel->r_info); | |
706 | ||
707 | /* We don't want to redirect any old unconditional jump in this way, | |
708 | only one which is being used for a sibcall, where it is | |
709 | acceptable for the R16 and R17 registers to be clobbered. */ | |
710 | if (r_type == R_KVX_PCREL27 | |
711 | && (branch_offset > KVX_MAX_FWD_CALL_OFFSET | |
712 | || branch_offset < KVX_MAX_BWD_CALL_OFFSET)) | |
713 | { | |
714 | stub_type = kvx_stub_long_branch; | |
715 | } | |
716 | ||
717 | return stub_type; | |
718 | } | |
719 | ||
720 | /* Build a name for an entry in the stub hash table. */ | |
721 | ||
722 | static char * | |
723 | elfNN_kvx_stub_name (const asection *input_section, | |
d530ba0a AM |
724 | const asection *sym_sec, |
725 | const struct elf_kvx_link_hash_entry *hash, | |
726 | const Elf_Internal_Rela *rel) | |
6e712424 PI |
727 | { |
728 | char *stub_name; | |
729 | bfd_size_type len; | |
730 | ||
731 | if (hash) | |
732 | { | |
733 | len = 8 + 1 + strlen (hash->root.root.root.string) + 1 + 16 + 1; | |
734 | stub_name = bfd_malloc (len); | |
735 | if (stub_name != NULL) | |
736 | snprintf (stub_name, len, "%08x_%s+%" PRIx64 "x", | |
737 | (unsigned int) input_section->id, | |
738 | hash->root.root.root.string, | |
835f16da | 739 | (uint64_t) rel->r_addend); |
6e712424 PI |
740 | } |
741 | else | |
742 | { | |
743 | len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1; | |
744 | stub_name = bfd_malloc (len); | |
745 | if (stub_name != NULL) | |
746 | snprintf (stub_name, len, "%08x_%x:%x+%" PRIx64 "x", | |
747 | (unsigned int) input_section->id, | |
748 | (unsigned int) sym_sec->id, | |
749 | (unsigned int) ELFNN_R_SYM (rel->r_info), | |
835f16da | 750 | (uint64_t) rel->r_addend); |
6e712424 PI |
751 | } |
752 | ||
753 | return stub_name; | |
754 | } | |
755 | ||
756 | /* Return true if symbol H should be hashed in the `.gnu.hash' section. For | |
757 | executable PLT slots where the executable never takes the address of those | |
758 | functions, the function symbols are not added to the hash table. */ | |
759 | ||
760 | static bool | |
761 | elf_kvx_hash_symbol (struct elf_link_hash_entry *h) | |
762 | { | |
763 | if (h->plt.offset != (bfd_vma) -1 | |
764 | && !h->def_regular | |
765 | && !h->pointer_equality_needed) | |
766 | return false; | |
767 | ||
768 | return _bfd_elf_hash_symbol (h); | |
769 | } | |
770 | ||
771 | ||
772 | /* Look up an entry in the stub hash. Stub entries are cached because | |
773 | creating the stub name takes a bit of time. */ | |
774 | ||
775 | static struct elf_kvx_stub_hash_entry * | |
776 | elfNN_kvx_get_stub_entry (const asection *input_section, | |
d530ba0a AM |
777 | const asection *sym_sec, |
778 | struct elf_link_hash_entry *hash, | |
779 | const Elf_Internal_Rela *rel, | |
780 | struct elf_kvx_link_hash_table *htab) | |
6e712424 PI |
781 | { |
782 | struct elf_kvx_stub_hash_entry *stub_entry; | |
783 | struct elf_kvx_link_hash_entry *h = | |
784 | (struct elf_kvx_link_hash_entry *) hash; | |
785 | const asection *id_sec; | |
786 | ||
787 | if ((input_section->flags & SEC_CODE) == 0) | |
788 | return NULL; | |
789 | ||
790 | /* If this input section is part of a group of sections sharing one | |
791 | stub section, then use the id of the first section in the group. | |
792 | Stub names need to include a section id, as there may well be | |
793 | more than one stub used to reach say, printf, and we need to | |
794 | distinguish between them. */ | |
795 | id_sec = htab->stub_group[input_section->id].link_sec; | |
796 | ||
797 | if (h != NULL && h->stub_cache != NULL | |
798 | && h->stub_cache->h == h && h->stub_cache->id_sec == id_sec) | |
799 | { | |
800 | stub_entry = h->stub_cache; | |
801 | } | |
802 | else | |
803 | { | |
804 | char *stub_name; | |
805 | ||
806 | stub_name = elfNN_kvx_stub_name (id_sec, sym_sec, h, rel); | |
807 | if (stub_name == NULL) | |
808 | return NULL; | |
809 | ||
810 | stub_entry = kvx_stub_hash_lookup (&htab->stub_hash_table, | |
d530ba0a | 811 | stub_name, false, false); |
6e712424 PI |
812 | if (h != NULL) |
813 | h->stub_cache = stub_entry; | |
814 | ||
815 | free (stub_name); | |
816 | } | |
817 | ||
818 | return stub_entry; | |
819 | } | |
820 | ||
821 | ||
822 | /* Create a stub section. */ | |
823 | ||
824 | static asection * | |
825 | _bfd_kvx_create_stub_section (asection *section, | |
d530ba0a | 826 | struct elf_kvx_link_hash_table *htab) |
6e712424 PI |
827 | |
828 | { | |
829 | size_t namelen; | |
830 | bfd_size_type len; | |
831 | char *s_name; | |
832 | ||
833 | namelen = strlen (section->name); | |
834 | len = namelen + sizeof (STUB_SUFFIX); | |
835 | s_name = bfd_alloc (htab->stub_bfd, len); | |
836 | if (s_name == NULL) | |
837 | return NULL; | |
838 | ||
839 | memcpy (s_name, section->name, namelen); | |
840 | memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX)); | |
841 | return (*htab->add_stub_section) (s_name, section); | |
842 | } | |
843 | ||
844 | ||
845 | /* Find or create a stub section for a link section. | |
846 | ||
847 | Fix or create the stub section used to collect stubs attached to | |
848 | the specified link section. */ | |
849 | ||
850 | static asection * | |
851 | _bfd_kvx_get_stub_for_link_section (asection *link_section, | |
d530ba0a | 852 | struct elf_kvx_link_hash_table *htab) |
6e712424 PI |
853 | { |
854 | if (htab->stub_group[link_section->id].stub_sec == NULL) | |
855 | htab->stub_group[link_section->id].stub_sec | |
856 | = _bfd_kvx_create_stub_section (link_section, htab); | |
857 | return htab->stub_group[link_section->id].stub_sec; | |
858 | } | |
859 | ||
860 | ||
861 | /* Find or create a stub section in the stub group for an input | |
862 | section. */ | |
863 | ||
864 | static asection * | |
865 | _bfd_kvx_create_or_find_stub_sec (asection *section, | |
d530ba0a | 866 | struct elf_kvx_link_hash_table *htab) |
6e712424 PI |
867 | { |
868 | asection *link_sec = htab->stub_group[section->id].link_sec; | |
869 | return _bfd_kvx_get_stub_for_link_section (link_sec, htab); | |
870 | } | |
871 | ||
872 | ||
873 | /* Add a new stub entry in the stub group associated with an input | |
874 | section to the stub hash. Not all fields of the new stub entry are | |
875 | initialised. */ | |
876 | ||
877 | static struct elf_kvx_stub_hash_entry * | |
878 | _bfd_kvx_add_stub_entry_in_group (const char *stub_name, | |
d530ba0a AM |
879 | asection *section, |
880 | struct elf_kvx_link_hash_table *htab) | |
6e712424 PI |
881 | { |
882 | asection *link_sec; | |
883 | asection *stub_sec; | |
884 | struct elf_kvx_stub_hash_entry *stub_entry; | |
885 | ||
886 | link_sec = htab->stub_group[section->id].link_sec; | |
887 | stub_sec = _bfd_kvx_create_or_find_stub_sec (section, htab); | |
888 | ||
889 | /* Enter this entry into the linker stub hash table. */ | |
890 | stub_entry = kvx_stub_hash_lookup (&htab->stub_hash_table, stub_name, | |
d530ba0a | 891 | true, false); |
6e712424 PI |
892 | if (stub_entry == NULL) |
893 | { | |
894 | /* xgettext:c-format */ | |
895 | _bfd_error_handler (_("%pB: cannot create stub entry %s"), | |
d530ba0a | 896 | section->owner, stub_name); |
6e712424 PI |
897 | return NULL; |
898 | } | |
899 | ||
900 | stub_entry->stub_sec = stub_sec; | |
901 | stub_entry->stub_offset = 0; | |
902 | stub_entry->id_sec = link_sec; | |
903 | ||
904 | return stub_entry; | |
905 | } | |
906 | ||
907 | static bool | |
908 | kvx_build_one_stub (struct bfd_hash_entry *gen_entry, | |
d530ba0a | 909 | void *in_arg) |
6e712424 PI |
910 | { |
911 | struct elf_kvx_stub_hash_entry *stub_entry; | |
912 | asection *stub_sec; | |
913 | bfd *stub_bfd; | |
914 | bfd_byte *loc; | |
915 | bfd_vma sym_value; | |
916 | unsigned int template_size; | |
917 | const uint32_t *template; | |
918 | unsigned int i; | |
919 | struct bfd_link_info *info; | |
920 | ||
921 | /* Massage our args to the form they really have. */ | |
922 | stub_entry = (struct elf_kvx_stub_hash_entry *) gen_entry; | |
923 | ||
924 | info = (struct bfd_link_info *) in_arg; | |
925 | ||
926 | /* Fail if the target section could not be assigned to an output | |
927 | section. The user should fix his linker script. */ | |
928 | if (stub_entry->target_section->output_section == NULL | |
929 | && info->non_contiguous_regions) | |
930 | info->callbacks->einfo (_("%F%P: Could not assign '%pA' to an output section. " | |
931 | "Retry without " | |
932 | "--enable-non-contiguous-regions.\n"), | |
933 | stub_entry->target_section); | |
934 | ||
935 | stub_sec = stub_entry->stub_sec; | |
936 | ||
937 | /* Make a note of the offset within the stubs for this entry. */ | |
938 | stub_entry->stub_offset = stub_sec->size; | |
939 | loc = stub_sec->contents + stub_entry->stub_offset; | |
940 | ||
941 | stub_bfd = stub_sec->owner; | |
942 | ||
943 | /* This is the address of the stub destination. */ | |
944 | sym_value = (stub_entry->target_value | |
945 | + stub_entry->target_section->output_offset | |
946 | + stub_entry->target_section->output_section->vma); | |
947 | ||
948 | switch (stub_entry->stub_type) | |
949 | { | |
950 | case kvx_stub_long_branch: | |
951 | template = elfNN_kvx_long_branch_stub; | |
952 | template_size = sizeof (elfNN_kvx_long_branch_stub); | |
953 | break; | |
954 | default: | |
955 | abort (); | |
956 | } | |
957 | ||
958 | for (i = 0; i < (template_size / sizeof template[0]); i++) | |
959 | { | |
960 | bfd_putl32 (template[i], loc); | |
961 | loc += 4; | |
962 | } | |
963 | ||
964 | stub_sec->size += template_size; | |
965 | ||
966 | switch (stub_entry->stub_type) | |
967 | { | |
968 | case kvx_stub_long_branch: | |
d530ba0a AM |
969 | /* The stub uses a make insn with 43bits immediate. |
970 | We need to apply 3 relocations: | |
971 | BFD_RELOC_KVX_S43_LO10, | |
972 | BFD_RELOC_KVX_S43_UP27, | |
973 | BFD_RELOC_KVX_S43_EX6. */ | |
6e712424 | 974 | if (kvx_relocate (R_KVX_S43_LO10, stub_bfd, stub_sec, |
d530ba0a AM |
975 | stub_entry->stub_offset, sym_value) != bfd_reloc_ok) |
976 | BFD_FAIL (); | |
6e712424 | 977 | if (kvx_relocate (R_KVX_S43_EX6, stub_bfd, stub_sec, |
d530ba0a AM |
978 | stub_entry->stub_offset, sym_value) != bfd_reloc_ok) |
979 | BFD_FAIL (); | |
6e712424 | 980 | if (kvx_relocate (R_KVX_S43_UP27, stub_bfd, stub_sec, |
d530ba0a AM |
981 | stub_entry->stub_offset + 4, sym_value) != bfd_reloc_ok) |
982 | BFD_FAIL (); | |
6e712424 PI |
983 | break; |
984 | default: | |
985 | abort (); | |
986 | } | |
987 | ||
988 | return true; | |
989 | } | |
990 | ||
991 | /* As above, but don't actually build the stub. Just bump offset so | |
992 | we know stub section sizes. */ | |
993 | ||
994 | static bool | |
d530ba0a AM |
995 | kvx_size_one_stub (struct bfd_hash_entry *gen_entry, |
996 | void *in_arg ATTRIBUTE_UNUSED) | |
6e712424 PI |
997 | { |
998 | struct elf_kvx_stub_hash_entry *stub_entry; | |
999 | int size; | |
1000 | ||
1001 | /* Massage our args to the form they really have. */ | |
1002 | stub_entry = (struct elf_kvx_stub_hash_entry *) gen_entry; | |
1003 | ||
1004 | switch (stub_entry->stub_type) | |
1005 | { | |
1006 | case kvx_stub_long_branch: | |
1007 | size = sizeof (elfNN_kvx_long_branch_stub); | |
1008 | break; | |
1009 | default: | |
1010 | abort (); | |
1011 | } | |
1012 | ||
1013 | stub_entry->stub_sec->size += size; | |
1014 | return true; | |
1015 | } | |
1016 | ||
1017 | /* External entry points for sizing and building linker stubs. */ | |
1018 | ||
1019 | /* Set up various things so that we can make a list of input sections | |
1020 | for each output section included in the link. Returns -1 on error, | |
1021 | 0 when no stubs will be needed, and 1 on success. */ | |
1022 | ||
1023 | int | |
1024 | elfNN_kvx_setup_section_lists (bfd *output_bfd, | |
d530ba0a | 1025 | struct bfd_link_info *info) |
6e712424 PI |
1026 | { |
1027 | bfd *input_bfd; | |
1028 | unsigned int bfd_count; | |
1029 | unsigned int top_id, top_index; | |
1030 | asection *section; | |
1031 | asection **input_list, **list; | |
1032 | bfd_size_type amt; | |
1033 | struct elf_kvx_link_hash_table *htab = | |
1034 | elf_kvx_hash_table (info); | |
1035 | ||
1036 | if (!is_elf_hash_table ((const struct bfd_link_hash_table *)htab)) | |
1037 | return 0; | |
1038 | ||
1039 | /* Count the number of input BFDs and find the top input section id. */ | |
1040 | for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0; | |
1041 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
1042 | { | |
1043 | bfd_count += 1; | |
1044 | for (section = input_bfd->sections; | |
1045 | section != NULL; section = section->next) | |
1046 | { | |
1047 | if (top_id < section->id) | |
1048 | top_id = section->id; | |
1049 | } | |
1050 | } | |
1051 | htab->bfd_count = bfd_count; | |
1052 | ||
1053 | amt = sizeof (struct map_stub) * (top_id + 1); | |
1054 | htab->stub_group = bfd_zmalloc (amt); | |
1055 | if (htab->stub_group == NULL) | |
1056 | return -1; | |
1057 | ||
1058 | /* We can't use output_bfd->section_count here to find the top output | |
1059 | section index as some sections may have been removed, and | |
1060 | _bfd_strip_section_from_output doesn't renumber the indices. */ | |
1061 | for (section = output_bfd->sections, top_index = 0; | |
1062 | section != NULL; section = section->next) | |
1063 | { | |
1064 | if (top_index < section->index) | |
1065 | top_index = section->index; | |
1066 | } | |
1067 | ||
1068 | htab->top_index = top_index; | |
1069 | amt = sizeof (asection *) * (top_index + 1); | |
1070 | input_list = bfd_malloc (amt); | |
1071 | htab->input_list = input_list; | |
1072 | if (input_list == NULL) | |
1073 | return -1; | |
1074 | ||
1075 | /* For sections we aren't interested in, mark their entries with a | |
1076 | value we can check later. */ | |
1077 | list = input_list + top_index; | |
1078 | do | |
1079 | *list = bfd_abs_section_ptr; | |
1080 | while (list-- != input_list); | |
1081 | ||
1082 | for (section = output_bfd->sections; | |
1083 | section != NULL; section = section->next) | |
1084 | { | |
1085 | if ((section->flags & SEC_CODE) != 0) | |
1086 | input_list[section->index] = NULL; | |
1087 | } | |
1088 | ||
1089 | return 1; | |
1090 | } | |
1091 | ||
1092 | /* Used by elfNN_kvx_next_input_section and group_sections. */ | |
1093 | #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec) | |
1094 | ||
1095 | /* The linker repeatedly calls this function for each input section, | |
1096 | in the order that input sections are linked into output sections. | |
1097 | Build lists of input sections to determine groupings between which | |
1098 | we may insert linker stubs. */ | |
1099 | ||
1100 | void | |
1101 | elfNN_kvx_next_input_section (struct bfd_link_info *info, asection *isec) | |
1102 | { | |
1103 | struct elf_kvx_link_hash_table *htab = | |
1104 | elf_kvx_hash_table (info); | |
1105 | ||
1106 | if (isec->output_section->index <= htab->top_index) | |
1107 | { | |
1108 | asection **list = htab->input_list + isec->output_section->index; | |
1109 | ||
1110 | if (*list != bfd_abs_section_ptr) | |
1111 | { | |
1112 | /* Steal the link_sec pointer for our list. */ | |
1113 | /* This happens to make the list in reverse order, | |
1114 | which is what we want. */ | |
1115 | PREV_SEC (isec) = *list; | |
1116 | *list = isec; | |
1117 | } | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | /* See whether we can group stub sections together. Grouping stub | |
1122 | sections may result in fewer stubs. More importantly, we need to | |
1123 | put all .init* and .fini* stubs at the beginning of the .init or | |
1124 | .fini output sections respectively, because glibc splits the | |
1125 | _init and _fini functions into multiple parts. Putting a stub in | |
1126 | the middle of a function is not a good idea. */ | |
1127 | ||
1128 | static void | |
1129 | group_sections (struct elf_kvx_link_hash_table *htab, | |
1130 | bfd_size_type stub_group_size, | |
1131 | bool stubs_always_after_branch) | |
1132 | { | |
1133 | asection **list = htab->input_list; | |
1134 | ||
1135 | do | |
1136 | { | |
1137 | asection *tail = *list; | |
1138 | asection *head; | |
1139 | ||
1140 | if (tail == bfd_abs_section_ptr) | |
1141 | continue; | |
1142 | ||
1143 | /* Reverse the list: we must avoid placing stubs at the | |
1144 | beginning of the section because the beginning of the text | |
1145 | section may be required for an interrupt vector in bare metal | |
1146 | code. */ | |
1147 | #define NEXT_SEC PREV_SEC | |
1148 | head = NULL; | |
1149 | while (tail != NULL) | |
1150 | { | |
1151 | /* Pop from tail. */ | |
1152 | asection *item = tail; | |
1153 | tail = PREV_SEC (item); | |
1154 | ||
1155 | /* Push on head. */ | |
1156 | NEXT_SEC (item) = head; | |
1157 | head = item; | |
1158 | } | |
1159 | ||
1160 | while (head != NULL) | |
1161 | { | |
1162 | asection *curr; | |
1163 | asection *next; | |
1164 | bfd_vma stub_group_start = head->output_offset; | |
1165 | bfd_vma end_of_next; | |
1166 | ||
1167 | curr = head; | |
1168 | while (NEXT_SEC (curr) != NULL) | |
1169 | { | |
1170 | next = NEXT_SEC (curr); | |
1171 | end_of_next = next->output_offset + next->size; | |
1172 | if (end_of_next - stub_group_start >= stub_group_size) | |
1173 | /* End of NEXT is too far from start, so stop. */ | |
1174 | break; | |
1175 | /* Add NEXT to the group. */ | |
1176 | curr = next; | |
1177 | } | |
1178 | ||
1179 | /* OK, the size from the start to the start of CURR is less | |
1180 | than stub_group_size and thus can be handled by one stub | |
1181 | section. (Or the head section is itself larger than | |
1182 | stub_group_size, in which case we may be toast.) | |
1183 | We should really be keeping track of the total size of | |
1184 | stubs added here, as stubs contribute to the final output | |
1185 | section size. */ | |
1186 | do | |
1187 | { | |
1188 | next = NEXT_SEC (head); | |
1189 | /* Set up this stub group. */ | |
1190 | htab->stub_group[head->id].link_sec = curr; | |
1191 | } | |
1192 | while (head != curr && (head = next) != NULL); | |
1193 | ||
1194 | /* But wait, there's more! Input sections up to stub_group_size | |
1195 | bytes after the stub section can be handled by it too. */ | |
1196 | if (!stubs_always_after_branch) | |
1197 | { | |
1198 | stub_group_start = curr->output_offset + curr->size; | |
1199 | ||
1200 | while (next != NULL) | |
1201 | { | |
1202 | end_of_next = next->output_offset + next->size; | |
1203 | if (end_of_next - stub_group_start >= stub_group_size) | |
1204 | /* End of NEXT is too far from stubs, so stop. */ | |
1205 | break; | |
1206 | /* Add NEXT to the stub group. */ | |
1207 | head = next; | |
1208 | next = NEXT_SEC (head); | |
1209 | htab->stub_group[head->id].link_sec = curr; | |
1210 | } | |
1211 | } | |
1212 | head = next; | |
1213 | } | |
1214 | } | |
1215 | while (list++ != htab->input_list + htab->top_index); | |
1216 | ||
1217 | free (htab->input_list); | |
1218 | } | |
1219 | ||
1220 | static void | |
1221 | _bfd_kvx_resize_stubs (struct elf_kvx_link_hash_table *htab) | |
1222 | { | |
1223 | asection *section; | |
1224 | ||
1225 | /* OK, we've added some stubs. Find out the new size of the | |
1226 | stub sections. */ | |
1227 | for (section = htab->stub_bfd->sections; | |
1228 | section != NULL; section = section->next) | |
1229 | { | |
1230 | /* Ignore non-stub sections. */ | |
1231 | if (!strstr (section->name, STUB_SUFFIX)) | |
1232 | continue; | |
1233 | section->size = 0; | |
1234 | } | |
1235 | ||
1236 | bfd_hash_traverse (&htab->stub_hash_table, kvx_size_one_stub, htab); | |
1237 | } | |
1238 | ||
1239 | /* Satisfy the ELF linker by filling in some fields in our fake bfd. */ | |
1240 | ||
1241 | bool | |
1242 | kvx_elfNN_init_stub_bfd (struct bfd_link_info *info, | |
1243 | bfd *stub_bfd) | |
1244 | { | |
1245 | struct elf_kvx_link_hash_table *htab; | |
1246 | ||
1247 | elf_elfheader (stub_bfd)->e_ident[EI_CLASS] = ELFCLASSNN; | |
1248 | ||
1249 | /* Always hook our dynamic sections into the first bfd, which is the | |
1250 | linker created stub bfd. This ensures that the GOT header is at | |
1251 | the start of the output TOC section. */ | |
1252 | htab = elf_kvx_hash_table (info); | |
1253 | if (htab == NULL) | |
1254 | return false; | |
1255 | ||
1256 | return true; | |
1257 | } | |
1258 | ||
1259 | /* Determine and set the size of the stub section for a final link. | |
1260 | ||
1261 | The basic idea here is to examine all the relocations looking for | |
1262 | PC-relative calls to a target that is unreachable with a 27bits | |
1263 | immediate (found in call and goto). */ | |
1264 | ||
1265 | bool | |
1266 | elfNN_kvx_size_stubs (bfd *output_bfd, | |
1267 | bfd *stub_bfd, | |
1268 | struct bfd_link_info *info, | |
1269 | bfd_signed_vma group_size, | |
1270 | asection * (*add_stub_section) (const char *, | |
1271 | asection *), | |
1272 | void (*layout_sections_again) (void)) | |
1273 | { | |
1274 | bfd_size_type stub_group_size; | |
1275 | bool stubs_always_before_branch; | |
1276 | bool stub_changed = false; | |
1277 | struct elf_kvx_link_hash_table *htab = elf_kvx_hash_table (info); | |
1278 | ||
1279 | /* Propagate mach to stub bfd, because it may not have been | |
1280 | finalized when we created stub_bfd. */ | |
1281 | bfd_set_arch_mach (stub_bfd, bfd_get_arch (output_bfd), | |
1282 | bfd_get_mach (output_bfd)); | |
1283 | ||
1284 | /* Stash our params away. */ | |
1285 | htab->stub_bfd = stub_bfd; | |
1286 | htab->add_stub_section = add_stub_section; | |
1287 | htab->layout_sections_again = layout_sections_again; | |
1288 | stubs_always_before_branch = group_size < 0; | |
1289 | if (group_size < 0) | |
1290 | stub_group_size = -group_size; | |
1291 | else | |
1292 | stub_group_size = group_size; | |
1293 | ||
1294 | if (stub_group_size == 1) | |
1295 | { | |
1296 | /* Default values. */ | |
1297 | /* KVX branch range is +-256MB. The value used is 1MB less. */ | |
1298 | stub_group_size = 255 * 1024 * 1024; | |
1299 | } | |
1300 | ||
1301 | group_sections (htab, stub_group_size, stubs_always_before_branch); | |
1302 | ||
1303 | (*htab->layout_sections_again) (); | |
1304 | ||
1305 | while (1) | |
1306 | { | |
1307 | bfd *input_bfd; | |
1308 | ||
1309 | for (input_bfd = info->input_bfds; | |
1310 | input_bfd != NULL; input_bfd = input_bfd->link.next) | |
1311 | { | |
1312 | Elf_Internal_Shdr *symtab_hdr; | |
1313 | asection *section; | |
1314 | Elf_Internal_Sym *local_syms = NULL; | |
1315 | ||
1316 | if (!is_kvx_elf (input_bfd) | |
1317 | || (input_bfd->flags & BFD_LINKER_CREATED) != 0) | |
1318 | continue; | |
1319 | ||
1320 | /* We'll need the symbol table in a second. */ | |
1321 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
1322 | if (symtab_hdr->sh_info == 0) | |
1323 | continue; | |
1324 | ||
1325 | /* Walk over each section attached to the input bfd. */ | |
1326 | for (section = input_bfd->sections; | |
1327 | section != NULL; section = section->next) | |
1328 | { | |
1329 | Elf_Internal_Rela *internal_relocs, *irelaend, *irela; | |
1330 | ||
1331 | /* If there aren't any relocs, then there's nothing more | |
1332 | to do. */ | |
1333 | if ((section->flags & SEC_RELOC) == 0 | |
1334 | || section->reloc_count == 0 | |
1335 | || (section->flags & SEC_CODE) == 0) | |
1336 | continue; | |
1337 | ||
1338 | /* If this section is a link-once section that will be | |
1339 | discarded, then don't create any stubs. */ | |
1340 | if (section->output_section == NULL | |
1341 | || section->output_section->owner != output_bfd) | |
1342 | continue; | |
1343 | ||
1344 | /* Get the relocs. */ | |
1345 | internal_relocs | |
1346 | = _bfd_elf_link_read_relocs (input_bfd, section, NULL, | |
1347 | NULL, info->keep_memory); | |
1348 | if (internal_relocs == NULL) | |
1349 | goto error_ret_free_local; | |
1350 | ||
1351 | /* Now examine each relocation. */ | |
1352 | irela = internal_relocs; | |
1353 | irelaend = irela + section->reloc_count; | |
1354 | for (; irela < irelaend; irela++) | |
1355 | { | |
1356 | unsigned int r_type, r_indx; | |
1357 | enum elf_kvx_stub_type stub_type; | |
1358 | struct elf_kvx_stub_hash_entry *stub_entry; | |
1359 | asection *sym_sec; | |
1360 | bfd_vma sym_value; | |
1361 | bfd_vma destination; | |
1362 | struct elf_kvx_link_hash_entry *hash; | |
1363 | const char *sym_name; | |
1364 | char *stub_name; | |
1365 | const asection *id_sec; | |
1366 | unsigned char st_type; | |
1367 | bfd_size_type len; | |
1368 | ||
1369 | r_type = ELFNN_R_TYPE (irela->r_info); | |
1370 | r_indx = ELFNN_R_SYM (irela->r_info); | |
1371 | ||
1372 | if (r_type >= (unsigned int) R_KVX_end) | |
1373 | { | |
1374 | bfd_set_error (bfd_error_bad_value); | |
1375 | error_ret_free_internal: | |
1376 | if (elf_section_data (section)->relocs == NULL) | |
1377 | free (internal_relocs); | |
1378 | goto error_ret_free_local; | |
1379 | } | |
1380 | ||
1381 | /* Only look for stubs on unconditional branch and | |
1382 | branch and link instructions. */ | |
1383 | /* This catches CALL and GOTO insn */ | |
1384 | if (r_type != (unsigned int) R_KVX_PCREL27) | |
1385 | continue; | |
1386 | ||
1387 | /* Now determine the call target, its name, value, | |
1388 | section. */ | |
1389 | sym_sec = NULL; | |
1390 | sym_value = 0; | |
1391 | destination = 0; | |
1392 | hash = NULL; | |
1393 | sym_name = NULL; | |
1394 | if (r_indx < symtab_hdr->sh_info) | |
1395 | { | |
1396 | /* It's a local symbol. */ | |
1397 | Elf_Internal_Sym *sym; | |
1398 | Elf_Internal_Shdr *hdr; | |
1399 | ||
1400 | if (local_syms == NULL) | |
1401 | { | |
1402 | local_syms | |
1403 | = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1404 | if (local_syms == NULL) | |
1405 | local_syms | |
1406 | = bfd_elf_get_elf_syms (input_bfd, symtab_hdr, | |
1407 | symtab_hdr->sh_info, 0, | |
1408 | NULL, NULL, NULL); | |
1409 | if (local_syms == NULL) | |
1410 | goto error_ret_free_internal; | |
1411 | } | |
1412 | ||
1413 | sym = local_syms + r_indx; | |
1414 | hdr = elf_elfsections (input_bfd)[sym->st_shndx]; | |
1415 | sym_sec = hdr->bfd_section; | |
1416 | if (!sym_sec) | |
1417 | /* This is an undefined symbol. It can never | |
1418 | be resolved. */ | |
1419 | continue; | |
1420 | ||
1421 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
1422 | sym_value = sym->st_value; | |
1423 | destination = (sym_value + irela->r_addend | |
1424 | + sym_sec->output_offset | |
1425 | + sym_sec->output_section->vma); | |
1426 | st_type = ELF_ST_TYPE (sym->st_info); | |
1427 | sym_name | |
1428 | = bfd_elf_string_from_elf_section (input_bfd, | |
1429 | symtab_hdr->sh_link, | |
1430 | sym->st_name); | |
1431 | } | |
1432 | else | |
1433 | { | |
1434 | int e_indx; | |
1435 | ||
1436 | e_indx = r_indx - symtab_hdr->sh_info; | |
1437 | hash = ((struct elf_kvx_link_hash_entry *) | |
1438 | elf_sym_hashes (input_bfd)[e_indx]); | |
1439 | ||
1440 | while (hash->root.root.type == bfd_link_hash_indirect | |
1441 | || hash->root.root.type == bfd_link_hash_warning) | |
1442 | hash = ((struct elf_kvx_link_hash_entry *) | |
1443 | hash->root.root.u.i.link); | |
1444 | ||
1445 | if (hash->root.root.type == bfd_link_hash_defined | |
1446 | || hash->root.root.type == bfd_link_hash_defweak) | |
1447 | { | |
1448 | struct elf_kvx_link_hash_table *globals = | |
1449 | elf_kvx_hash_table (info); | |
1450 | sym_sec = hash->root.root.u.def.section; | |
1451 | sym_value = hash->root.root.u.def.value; | |
1452 | /* For a destination in a shared library, | |
1453 | use the PLT stub as target address to | |
1454 | decide whether a branch stub is | |
1455 | needed. */ | |
1456 | if (globals->root.splt != NULL && hash != NULL | |
1457 | && hash->root.plt.offset != (bfd_vma) - 1) | |
1458 | { | |
1459 | sym_sec = globals->root.splt; | |
1460 | sym_value = hash->root.plt.offset; | |
1461 | if (sym_sec->output_section != NULL) | |
1462 | destination = (sym_value | |
1463 | + sym_sec->output_offset | |
d530ba0a | 1464 | + sym_sec->output_section->vma); |
6e712424 PI |
1465 | } |
1466 | else if (sym_sec->output_section != NULL) | |
1467 | destination = (sym_value + irela->r_addend | |
1468 | + sym_sec->output_offset | |
1469 | + sym_sec->output_section->vma); | |
1470 | } | |
1471 | else if (hash->root.root.type == bfd_link_hash_undefined | |
1472 | || (hash->root.root.type | |
1473 | == bfd_link_hash_undefweak)) | |
1474 | { | |
1475 | /* For a shared library, use the PLT stub as | |
1476 | target address to decide whether a long | |
1477 | branch stub is needed. | |
1478 | For absolute code, they cannot be handled. */ | |
1479 | struct elf_kvx_link_hash_table *globals = | |
1480 | elf_kvx_hash_table (info); | |
1481 | ||
1482 | if (globals->root.splt != NULL && hash != NULL | |
1483 | && hash->root.plt.offset != (bfd_vma) - 1) | |
1484 | { | |
1485 | sym_sec = globals->root.splt; | |
1486 | sym_value = hash->root.plt.offset; | |
1487 | if (sym_sec->output_section != NULL) | |
1488 | destination = (sym_value | |
1489 | + sym_sec->output_offset | |
d530ba0a | 1490 | + sym_sec->output_section->vma); |
6e712424 PI |
1491 | } |
1492 | else | |
1493 | continue; | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | bfd_set_error (bfd_error_bad_value); | |
1498 | goto error_ret_free_internal; | |
1499 | } | |
1500 | st_type = ELF_ST_TYPE (hash->root.type); | |
1501 | sym_name = hash->root.root.root.string; | |
1502 | } | |
1503 | ||
1504 | /* Determine what (if any) linker stub is needed. */ | |
1505 | stub_type = kvx_type_of_stub (section, irela, sym_sec, | |
d530ba0a | 1506 | st_type, destination); |
6e712424 PI |
1507 | if (stub_type == kvx_stub_none) |
1508 | continue; | |
1509 | ||
1510 | /* Support for grouping stub sections. */ | |
1511 | id_sec = htab->stub_group[section->id].link_sec; | |
1512 | ||
1513 | /* Get the name of this stub. */ | |
1514 | stub_name = elfNN_kvx_stub_name (id_sec, sym_sec, hash, | |
1515 | irela); | |
1516 | if (!stub_name) | |
1517 | goto error_ret_free_internal; | |
1518 | ||
1519 | stub_entry = | |
1520 | kvx_stub_hash_lookup (&htab->stub_hash_table, | |
1521 | stub_name, false, false); | |
1522 | if (stub_entry != NULL) | |
1523 | { | |
1524 | /* The proper stub has already been created. */ | |
1525 | free (stub_name); | |
d530ba0a | 1526 | /* Always update this stub's target since it may have |
6e712424 PI |
1527 | changed after layout. */ |
1528 | stub_entry->target_value = sym_value + irela->r_addend; | |
1529 | continue; | |
1530 | } | |
1531 | ||
1532 | stub_entry = _bfd_kvx_add_stub_entry_in_group | |
1533 | (stub_name, section, htab); | |
1534 | if (stub_entry == NULL) | |
1535 | { | |
1536 | free (stub_name); | |
1537 | goto error_ret_free_internal; | |
1538 | } | |
1539 | ||
1540 | stub_entry->target_value = sym_value + irela->r_addend; | |
1541 | stub_entry->target_section = sym_sec; | |
1542 | stub_entry->stub_type = stub_type; | |
1543 | stub_entry->h = hash; | |
1544 | stub_entry->st_type = st_type; | |
1545 | ||
1546 | if (sym_name == NULL) | |
1547 | sym_name = "unnamed"; | |
1548 | len = sizeof (STUB_ENTRY_NAME) + strlen (sym_name); | |
1549 | stub_entry->output_name = bfd_alloc (htab->stub_bfd, len); | |
1550 | if (stub_entry->output_name == NULL) | |
1551 | { | |
1552 | free (stub_name); | |
1553 | goto error_ret_free_internal; | |
1554 | } | |
1555 | ||
1556 | snprintf (stub_entry->output_name, len, STUB_ENTRY_NAME, | |
1557 | sym_name); | |
1558 | ||
1559 | stub_changed = true; | |
1560 | } | |
1561 | ||
1562 | /* We're done with the internal relocs, free them. */ | |
1563 | if (elf_section_data (section)->relocs == NULL) | |
1564 | free (internal_relocs); | |
1565 | } | |
1566 | } | |
1567 | ||
1568 | if (!stub_changed) | |
1569 | break; | |
1570 | ||
1571 | _bfd_kvx_resize_stubs (htab); | |
1572 | ||
1573 | /* Ask the linker to do its stuff. */ | |
1574 | (*htab->layout_sections_again) (); | |
1575 | stub_changed = false; | |
1576 | } | |
1577 | ||
1578 | return true; | |
1579 | ||
1580 | error_ret_free_local: | |
1581 | return false; | |
1582 | ||
1583 | } | |
1584 | ||
1585 | /* Build all the stubs associated with the current output file. The | |
1586 | stubs are kept in a hash table attached to the main linker hash | |
1587 | table. We also set up the .plt entries for statically linked PIC | |
1588 | functions here. This function is called via kvx_elf_finish in the | |
1589 | linker. */ | |
1590 | ||
1591 | bool | |
1592 | elfNN_kvx_build_stubs (struct bfd_link_info *info) | |
1593 | { | |
1594 | asection *stub_sec; | |
1595 | struct bfd_hash_table *table; | |
1596 | struct elf_kvx_link_hash_table *htab; | |
1597 | ||
1598 | htab = elf_kvx_hash_table (info); | |
1599 | ||
1600 | for (stub_sec = htab->stub_bfd->sections; | |
1601 | stub_sec != NULL; stub_sec = stub_sec->next) | |
1602 | { | |
1603 | bfd_size_type size; | |
1604 | ||
1605 | /* Ignore non-stub sections. */ | |
1606 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
1607 | continue; | |
1608 | ||
1609 | /* Allocate memory to hold the linker stubs. */ | |
1610 | size = stub_sec->size; | |
1611 | stub_sec->contents = bfd_zalloc (htab->stub_bfd, size); | |
1612 | if (stub_sec->contents == NULL && size != 0) | |
1613 | return false; | |
1614 | stub_sec->size = 0; | |
1615 | } | |
1616 | ||
1617 | /* Build the stubs as directed by the stub hash table. */ | |
1618 | table = &htab->stub_hash_table; | |
1619 | bfd_hash_traverse (table, kvx_build_one_stub, info); | |
1620 | ||
1621 | return true; | |
1622 | } | |
1623 | ||
1624 | static bfd_vma | |
1625 | kvx_calculate_got_entry_vma (struct elf_link_hash_entry *h, | |
1626 | struct elf_kvx_link_hash_table | |
1627 | *globals, struct bfd_link_info *info, | |
1628 | bfd_vma value, bfd *output_bfd, | |
1629 | bool *unresolved_reloc_p) | |
1630 | { | |
1631 | bfd_vma off = (bfd_vma) - 1; | |
1632 | asection *basegot = globals->root.sgot; | |
1633 | bool dyn = globals->root.dynamic_sections_created; | |
1634 | ||
1635 | if (h != NULL) | |
1636 | { | |
1637 | BFD_ASSERT (basegot != NULL); | |
1638 | off = h->got.offset; | |
1639 | BFD_ASSERT (off != (bfd_vma) - 1); | |
1640 | if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h) | |
1641 | || (bfd_link_pic (info) | |
1642 | && SYMBOL_REFERENCES_LOCAL (info, h)) | |
1643 | || (ELF_ST_VISIBILITY (h->other) | |
1644 | && h->root.type == bfd_link_hash_undefweak)) | |
1645 | { | |
1646 | /* This is actually a static link, or it is a -Bsymbolic link | |
1647 | and the symbol is defined locally. We must initialize this | |
1648 | entry in the global offset table. Since the offset must | |
1649 | always be a multiple of 8 (4 in the case of ILP32), we use | |
1650 | the least significant bit to record whether we have | |
1651 | initialized it already. | |
1652 | When doing a dynamic link, we create a .rel(a).got relocation | |
1653 | entry to initialize the value. This is done in the | |
1654 | finish_dynamic_symbol routine. */ | |
1655 | if ((off & 1) != 0) | |
1656 | off &= ~1; | |
1657 | else | |
1658 | { | |
1659 | bfd_put_NN (output_bfd, value, basegot->contents + off); | |
1660 | h->got.offset |= 1; | |
1661 | } | |
1662 | } | |
1663 | else | |
1664 | *unresolved_reloc_p = false; | |
1665 | } | |
1666 | ||
1667 | return off; | |
1668 | } | |
1669 | ||
1670 | static unsigned int | |
1671 | kvx_reloc_got_type (bfd_reloc_code_real_type r_type) | |
1672 | { | |
1673 | switch (r_type) | |
1674 | { | |
1675 | /* Extracted with: | |
d530ba0a AM |
1676 | awk 'match ($0, /HOWTO.*R_(KVX.*_GOT(OFF)?(64)?_.*),/,ary) \ |
1677 | {print "case BFD_RELOC_" ary[1] ":";}' elfxx-kvxc.def */ | |
6e712424 PI |
1678 | case BFD_RELOC_KVX_S37_GOTOFF_LO10: |
1679 | case BFD_RELOC_KVX_S37_GOTOFF_UP27: | |
1680 | ||
1681 | case BFD_RELOC_KVX_S37_GOT_LO10: | |
1682 | case BFD_RELOC_KVX_S37_GOT_UP27: | |
1683 | ||
1684 | case BFD_RELOC_KVX_S43_GOTOFF_LO10: | |
1685 | case BFD_RELOC_KVX_S43_GOTOFF_UP27: | |
1686 | case BFD_RELOC_KVX_S43_GOTOFF_EX6: | |
1687 | ||
1688 | case BFD_RELOC_KVX_S43_GOT_LO10: | |
1689 | case BFD_RELOC_KVX_S43_GOT_UP27: | |
1690 | case BFD_RELOC_KVX_S43_GOT_EX6: | |
1691 | return GOT_NORMAL; | |
d530ba0a | 1692 | |
6e712424 PI |
1693 | case BFD_RELOC_KVX_S37_TLS_GD_LO10: |
1694 | case BFD_RELOC_KVX_S37_TLS_GD_UP27: | |
1695 | case BFD_RELOC_KVX_S43_TLS_GD_LO10: | |
1696 | case BFD_RELOC_KVX_S43_TLS_GD_UP27: | |
1697 | case BFD_RELOC_KVX_S43_TLS_GD_EX6: | |
1698 | return GOT_TLS_GD; | |
1699 | ||
1700 | case BFD_RELOC_KVX_S37_TLS_LD_LO10: | |
1701 | case BFD_RELOC_KVX_S37_TLS_LD_UP27: | |
1702 | case BFD_RELOC_KVX_S43_TLS_LD_LO10: | |
1703 | case BFD_RELOC_KVX_S43_TLS_LD_UP27: | |
1704 | case BFD_RELOC_KVX_S43_TLS_LD_EX6: | |
1705 | return GOT_TLS_LD; | |
1706 | ||
1707 | case BFD_RELOC_KVX_S37_TLS_IE_LO10: | |
1708 | case BFD_RELOC_KVX_S37_TLS_IE_UP27: | |
1709 | case BFD_RELOC_KVX_S43_TLS_IE_LO10: | |
1710 | case BFD_RELOC_KVX_S43_TLS_IE_UP27: | |
1711 | case BFD_RELOC_KVX_S43_TLS_IE_EX6: | |
1712 | return GOT_TLS_IE; | |
1713 | ||
1714 | default: | |
1715 | break; | |
1716 | } | |
1717 | return GOT_UNKNOWN; | |
1718 | } | |
1719 | ||
1720 | static bool | |
1721 | kvx_can_relax_tls (bfd *input_bfd ATTRIBUTE_UNUSED, | |
1722 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1723 | bfd_reloc_code_real_type r_type ATTRIBUTE_UNUSED, | |
1724 | struct elf_link_hash_entry *h ATTRIBUTE_UNUSED, | |
1725 | unsigned long r_symndx ATTRIBUTE_UNUSED) | |
1726 | { | |
1727 | if (! IS_KVX_TLS_RELAX_RELOC (r_type)) | |
1728 | return false; | |
1729 | ||
1730 | /* Relaxing hook. Disabled on KVX. */ | |
1731 | /* See elfnn-aarch64.c */ | |
1732 | return true; | |
1733 | } | |
1734 | ||
1735 | /* Given the relocation code R_TYPE, return the relaxed bfd reloc | |
1736 | enumerator. */ | |
1737 | ||
1738 | static bfd_reloc_code_real_type | |
1739 | kvx_tls_transition (bfd *input_bfd, | |
1740 | struct bfd_link_info *info, | |
1741 | unsigned int r_type, | |
1742 | struct elf_link_hash_entry *h, | |
1743 | unsigned long r_symndx) | |
1744 | { | |
1745 | bfd_reloc_code_real_type bfd_r_type | |
1746 | = elfNN_kvx_bfd_reloc_from_type (input_bfd, r_type); | |
1747 | ||
1748 | if (! kvx_can_relax_tls (input_bfd, info, bfd_r_type, h, r_symndx)) | |
1749 | return bfd_r_type; | |
1750 | ||
1751 | return bfd_r_type; | |
1752 | } | |
1753 | ||
1754 | /* Return the base VMA address which should be subtracted from real addresses | |
1755 | when resolving R_KVX_*_TLS_GD_* and R_KVX_*_TLS_LD_* relocation. */ | |
1756 | ||
1757 | static bfd_vma | |
1758 | dtpoff_base (struct bfd_link_info *info) | |
1759 | { | |
1760 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1761 | BFD_ASSERT (elf_hash_table (info)->tls_sec != NULL); | |
1762 | return elf_hash_table (info)->tls_sec->vma; | |
1763 | } | |
1764 | ||
1765 | /* Return the base VMA address which should be subtracted from real addresses | |
1766 | when resolving R_KVX_*_TLS_IE_* and R_KVX_*_TLS_LE_* relocations. */ | |
1767 | ||
1768 | static bfd_vma | |
1769 | tpoff_base (struct bfd_link_info *info) | |
1770 | { | |
1771 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
1772 | ||
1773 | /* If tls_sec is NULL, we should have signalled an error already. */ | |
1774 | BFD_ASSERT (htab->tls_sec != NULL); | |
1775 | ||
1776 | bfd_vma base = align_power ((bfd_vma) 0, | |
1777 | htab->tls_sec->alignment_power); | |
1778 | return htab->tls_sec->vma - base; | |
1779 | } | |
1780 | ||
1781 | static bfd_vma * | |
1782 | symbol_got_offset_ref (bfd *input_bfd, struct elf_link_hash_entry *h, | |
1783 | unsigned long r_symndx) | |
1784 | { | |
1785 | /* Calculate the address of the GOT entry for symbol | |
1786 | referred to in h. */ | |
1787 | if (h != NULL) | |
1788 | return &h->got.offset; | |
1789 | else | |
1790 | { | |
1791 | /* local symbol */ | |
1792 | struct elf_kvx_local_symbol *l; | |
1793 | ||
1794 | l = elf_kvx_locals (input_bfd); | |
1795 | return &l[r_symndx].got_offset; | |
1796 | } | |
1797 | } | |
1798 | ||
1799 | static void | |
1800 | symbol_got_offset_mark (bfd *input_bfd, struct elf_link_hash_entry *h, | |
1801 | unsigned long r_symndx) | |
1802 | { | |
1803 | bfd_vma *p; | |
1804 | p = symbol_got_offset_ref (input_bfd, h, r_symndx); | |
1805 | *p |= 1; | |
1806 | } | |
1807 | ||
1808 | static int | |
1809 | symbol_got_offset_mark_p (bfd *input_bfd, struct elf_link_hash_entry *h, | |
1810 | unsigned long r_symndx) | |
1811 | { | |
1812 | bfd_vma value; | |
1813 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
1814 | return value & 1; | |
1815 | } | |
1816 | ||
1817 | static bfd_vma | |
1818 | symbol_got_offset (bfd *input_bfd, struct elf_link_hash_entry *h, | |
1819 | unsigned long r_symndx) | |
1820 | { | |
1821 | bfd_vma value; | |
1822 | value = * symbol_got_offset_ref (input_bfd, h, r_symndx); | |
1823 | value &= ~1; | |
1824 | return value; | |
1825 | } | |
1826 | ||
1827 | /* N_ONES produces N one bits, without overflowing machine arithmetic. */ | |
1828 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) -1)) - 1) << 1) | 1) | |
1829 | ||
d530ba0a AM |
1830 | /* This is a copy/paste + modification from |
1831 | reloc.c:_bfd_relocate_contents. Relocations are applied to 32bits | |
1832 | words, so all overflow checks will overflow for values above | |
1833 | 32bits. */ | |
6e712424 PI |
1834 | static bfd_reloc_status_type |
1835 | check_signed_overflow (enum complain_overflow complain_on_overflow, | |
1836 | bfd_reloc_code_real_type bfd_r_type, bfd *input_bfd, | |
1837 | bfd_vma relocation) | |
1838 | { | |
1839 | bfd_reloc_status_type flag = bfd_reloc_ok; | |
1840 | bfd_vma addrmask, fieldmask, signmask, ss; | |
1841 | bfd_vma a, b, sum; | |
1842 | bfd_vma x = 0; | |
1843 | ||
1844 | /* These usually come from howto struct. As we don't check for | |
d530ba0a AM |
1845 | values fitting in bitfields or in subpart of words, we set all |
1846 | these to values to check as if the field is starting from first | |
1847 | bit. */ | |
6e712424 PI |
1848 | unsigned int rightshift = 0; |
1849 | unsigned int bitpos = 0; | |
1850 | unsigned int bitsize = 0; | |
1851 | bfd_vma src_mask = -1; | |
1852 | ||
1853 | /* Only regular symbol relocations are checked here. Others | |
1854 | relocations (GOT, TLS) could be checked if the need is | |
1855 | confirmed. At the moment, we keep previous behavior | |
1856 | (ie. unchecked) for those. */ | |
1857 | switch (bfd_r_type) | |
1858 | { | |
1859 | case BFD_RELOC_KVX_S37_LO10: | |
1860 | case BFD_RELOC_KVX_S37_UP27: | |
1861 | bitsize = 37; | |
1862 | break; | |
1863 | ||
1864 | case BFD_RELOC_KVX_S32_LO5: | |
1865 | case BFD_RELOC_KVX_S32_UP27: | |
1866 | bitsize = 32; | |
1867 | break; | |
1868 | ||
1869 | case BFD_RELOC_KVX_S43_LO10: | |
1870 | case BFD_RELOC_KVX_S43_UP27: | |
1871 | case BFD_RELOC_KVX_S43_EX6: | |
1872 | bitsize = 43; | |
1873 | break; | |
1874 | ||
1875 | case BFD_RELOC_KVX_S64_LO10: | |
1876 | case BFD_RELOC_KVX_S64_UP27: | |
1877 | case BFD_RELOC_KVX_S64_EX27: | |
1878 | bitsize = 64; | |
1879 | break; | |
1880 | ||
1881 | default: | |
1882 | return bfd_reloc_ok; | |
1883 | } | |
1884 | ||
1885 | /* direct copy/paste from reloc.c below */ | |
1886 | ||
1887 | /* Get the values to be added together. For signed and unsigned | |
1888 | relocations, we assume that all values should be truncated to | |
1889 | the size of an address. For bitfields, all the bits matter. | |
1890 | See also bfd_check_overflow. */ | |
1891 | fieldmask = N_ONES (bitsize); | |
1892 | signmask = ~fieldmask; | |
1893 | addrmask = (N_ONES (bfd_arch_bits_per_address (input_bfd)) | |
1894 | | (fieldmask << rightshift)); | |
1895 | a = (relocation & addrmask) >> rightshift; | |
1896 | b = (x & src_mask & addrmask) >> bitpos; | |
1897 | addrmask >>= rightshift; | |
1898 | ||
1899 | switch (complain_on_overflow) | |
1900 | { | |
1901 | case complain_overflow_signed: | |
1902 | /* If any sign bits are set, all sign bits must be set. | |
1903 | That is, A must be a valid negative address after | |
1904 | shifting. */ | |
1905 | signmask = ~(fieldmask >> 1); | |
1906 | /* Fall thru */ | |
1907 | ||
1908 | case complain_overflow_bitfield: | |
1909 | /* Much like the signed check, but for a field one bit | |
1910 | wider. We allow a bitfield to represent numbers in the | |
1911 | range -2**n to 2**n-1, where n is the number of bits in the | |
1912 | field. Note that when bfd_vma is 32 bits, a 32-bit reloc | |
1913 | can't overflow, which is exactly what we want. */ | |
1914 | ss = a & signmask; | |
1915 | if (ss != 0 && ss != (addrmask & signmask)) | |
1916 | flag = bfd_reloc_overflow; | |
1917 | ||
1918 | /* We only need this next bit of code if the sign bit of B | |
1919 | is below the sign bit of A. This would only happen if | |
1920 | SRC_MASK had fewer bits than BITSIZE. Note that if | |
1921 | SRC_MASK has more bits than BITSIZE, we can get into | |
1922 | trouble; we would need to verify that B is in range, as | |
1923 | we do for A above. */ | |
1924 | ss = ((~src_mask) >> 1) & src_mask; | |
1925 | ss >>= bitpos; | |
1926 | ||
1927 | /* Set all the bits above the sign bit. */ | |
1928 | b = (b ^ ss) - ss; | |
1929 | ||
1930 | /* Now we can do the addition. */ | |
1931 | sum = a + b; | |
1932 | ||
1933 | /* See if the result has the correct sign. Bits above the | |
1934 | sign bit are junk now; ignore them. If the sum is | |
1935 | positive, make sure we did not have all negative inputs; | |
1936 | if the sum is negative, make sure we did not have all | |
1937 | positive inputs. The test below looks only at the sign | |
1938 | bits, and it really just | |
1939 | SIGN (A) == SIGN (B) && SIGN (A) != SIGN (SUM) | |
1940 | ||
1941 | We mask with addrmask here to explicitly allow an address | |
1942 | wrap-around. The Linux kernel relies on it, and it is | |
1943 | the only way to write assembler code which can run when | |
1944 | loaded at a location 0x80000000 away from the location at | |
1945 | which it is linked. */ | |
1946 | if (((~(a ^ b)) & (a ^ sum)) & signmask & addrmask) | |
1947 | flag = bfd_reloc_overflow; | |
1948 | break; | |
1949 | ||
1950 | case complain_overflow_unsigned: | |
1951 | /* Checking for an unsigned overflow is relatively easy: | |
1952 | trim the addresses and add, and trim the result as well. | |
1953 | Overflow is normally indicated when the result does not | |
1954 | fit in the field. However, we also need to consider the | |
1955 | case when, e.g., fieldmask is 0x7fffffff or smaller, an | |
1956 | input is 0x80000000, and bfd_vma is only 32 bits; then we | |
1957 | will get sum == 0, but there is an overflow, since the | |
1958 | inputs did not fit in the field. Instead of doing a | |
1959 | separate test, we can check for this by or-ing in the | |
1960 | operands when testing for the sum overflowing its final | |
1961 | field. */ | |
1962 | sum = (a + b) & addrmask; | |
1963 | if ((a | b | sum) & signmask) | |
1964 | flag = bfd_reloc_overflow; | |
1965 | break; | |
1966 | ||
1967 | default: | |
1968 | abort (); | |
1969 | } | |
1970 | return flag; | |
1971 | } | |
1972 | ||
1973 | /* Perform a relocation as part of a final link. */ | |
1974 | static bfd_reloc_status_type | |
1975 | elfNN_kvx_final_link_relocate (reloc_howto_type *howto, | |
d530ba0a AM |
1976 | bfd *input_bfd, |
1977 | bfd *output_bfd, | |
1978 | asection *input_section, | |
1979 | bfd_byte *contents, | |
1980 | Elf_Internal_Rela *rel, | |
1981 | bfd_vma value, | |
1982 | struct bfd_link_info *info, | |
1983 | asection *sym_sec, | |
1984 | struct elf_link_hash_entry *h, | |
1985 | bool *unresolved_reloc_p, | |
1986 | bool save_addend, | |
1987 | bfd_vma *saved_addend, | |
1988 | Elf_Internal_Sym *sym) | |
6e712424 PI |
1989 | { |
1990 | Elf_Internal_Shdr *symtab_hdr; | |
1991 | unsigned int r_type = howto->type; | |
1992 | bfd_reloc_code_real_type bfd_r_type | |
1993 | = elfNN_kvx_bfd_reloc_from_howto (howto); | |
1994 | bfd_reloc_code_real_type new_bfd_r_type; | |
1995 | unsigned long r_symndx; | |
1996 | bfd_byte *hit_data = contents + rel->r_offset; | |
1997 | bfd_vma place, off; | |
c5ed8c63 | 1998 | bfd_vma addend; |
6e712424 PI |
1999 | struct elf_kvx_link_hash_table *globals; |
2000 | bool weak_undef_p; | |
2001 | asection *base_got; | |
2002 | bfd_reloc_status_type rret = bfd_reloc_ok; | |
2003 | bool resolved_to_zero; | |
2004 | globals = elf_kvx_hash_table (info); | |
2005 | ||
2006 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
2007 | ||
2008 | BFD_ASSERT (is_kvx_elf (input_bfd)); | |
2009 | ||
2010 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2011 | ||
2012 | /* It is possible to have linker relaxations on some TLS access | |
2013 | models. Update our information here. */ | |
2014 | new_bfd_r_type = kvx_tls_transition (input_bfd, info, r_type, h, r_symndx); | |
2015 | if (new_bfd_r_type != bfd_r_type) | |
2016 | { | |
2017 | bfd_r_type = new_bfd_r_type; | |
2018 | howto = elfNN_kvx_howto_from_bfd_reloc (bfd_r_type); | |
2019 | BFD_ASSERT (howto != NULL); | |
2020 | r_type = howto->type; | |
2021 | } | |
2022 | ||
2023 | place = input_section->output_section->vma | |
2024 | + input_section->output_offset + rel->r_offset; | |
2025 | ||
2026 | /* Get addend, accumulating the addend for consecutive relocs | |
2027 | which refer to the same offset. */ | |
c5ed8c63 AM |
2028 | addend = saved_addend ? *saved_addend : 0; |
2029 | addend += rel->r_addend; | |
6e712424 PI |
2030 | |
2031 | weak_undef_p = (h ? h->root.type == bfd_link_hash_undefweak | |
2032 | : bfd_is_und_section (sym_sec)); | |
2033 | resolved_to_zero = (h != NULL | |
2034 | && UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)); | |
2035 | ||
2036 | switch (bfd_r_type) | |
2037 | { | |
2038 | case BFD_RELOC_KVX_NN: | |
2039 | #if ARCH_SIZE == 64 | |
2040 | case BFD_RELOC_KVX_32: | |
2041 | #endif | |
2042 | case BFD_RELOC_KVX_S37_LO10: | |
2043 | case BFD_RELOC_KVX_S37_UP27: | |
2044 | ||
2045 | case BFD_RELOC_KVX_S32_LO5: | |
2046 | case BFD_RELOC_KVX_S32_UP27: | |
2047 | ||
2048 | case BFD_RELOC_KVX_S43_LO10: | |
2049 | case BFD_RELOC_KVX_S43_UP27: | |
2050 | case BFD_RELOC_KVX_S43_EX6: | |
2051 | ||
2052 | case BFD_RELOC_KVX_S64_LO10: | |
2053 | case BFD_RELOC_KVX_S64_UP27: | |
2054 | case BFD_RELOC_KVX_S64_EX27: | |
2055 | /* When generating a shared object or relocatable executable, these | |
d530ba0a AM |
2056 | relocations are copied into the output file to be resolved at |
2057 | run time. */ | |
6e712424 | 2058 | if (((bfd_link_pic (info) == true) |
d530ba0a | 2059 | || globals->root.is_relocatable_executable) |
6e712424 PI |
2060 | && (input_section->flags & SEC_ALLOC) |
2061 | && (h == NULL | |
d530ba0a AM |
2062 | || (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT |
2063 | && !resolved_to_zero) | |
6e712424 PI |
2064 | || h->root.type != bfd_link_hash_undefweak)) |
2065 | { | |
2066 | Elf_Internal_Rela outrel; | |
2067 | bfd_byte *loc; | |
2068 | bool skip, relocate; | |
2069 | asection *sreloc; | |
2070 | ||
2071 | *unresolved_reloc_p = false; | |
2072 | ||
2073 | skip = false; | |
2074 | relocate = false; | |
2075 | ||
c5ed8c63 | 2076 | outrel.r_addend = addend; |
6e712424 PI |
2077 | outrel.r_offset = |
2078 | _bfd_elf_section_offset (output_bfd, info, input_section, | |
2079 | rel->r_offset); | |
2080 | if (outrel.r_offset == (bfd_vma) - 1) | |
2081 | skip = true; | |
2082 | else if (outrel.r_offset == (bfd_vma) - 2) | |
2083 | { | |
2084 | skip = true; | |
2085 | relocate = true; | |
2086 | } | |
2087 | ||
2088 | outrel.r_offset += (input_section->output_section->vma | |
2089 | + input_section->output_offset); | |
2090 | ||
2091 | if (skip) | |
2092 | memset (&outrel, 0, sizeof outrel); | |
2093 | else if (h != NULL | |
2094 | && h->dynindx != -1 | |
d530ba0a AM |
2095 | && (!bfd_link_pic (info) || !info->symbolic |
2096 | || !h->def_regular)) | |
6e712424 PI |
2097 | outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type); |
2098 | else if (bfd_r_type == BFD_RELOC_KVX_32 | |
2099 | || bfd_r_type == BFD_RELOC_KVX_64) | |
2100 | { | |
2101 | int symbol; | |
2102 | ||
2103 | /* On SVR4-ish systems, the dynamic loader cannot | |
2104 | relocate the text and data segments independently, | |
2105 | so the symbol does not matter. */ | |
2106 | symbol = 0; | |
2107 | outrel.r_info = ELFNN_R_INFO (symbol, R_KVX_RELATIVE); | |
2108 | outrel.r_addend += value; | |
2109 | } | |
2110 | else if (bfd_link_pic (info) && info->symbolic) | |
2111 | { | |
2112 | goto skip_because_pic; | |
2113 | } | |
2114 | else | |
2115 | { | |
2116 | /* We may endup here from bad input code trying to | |
2117 | insert relocation on symbols within code. We do not | |
2118 | want that currently, and such code should use GOT + | |
d530ba0a AM |
2119 | KVX_32/64 reloc that translate in KVX_RELATIVE. */ |
2120 | const char *name; | |
2121 | if (h && h->root.root.string) | |
2122 | name = h->root.root.string; | |
2123 | else | |
2124 | name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, | |
2125 | NULL); | |
2126 | ||
2127 | (*_bfd_error_handler) | |
2128 | /* xgettext:c-format */ | |
2129 | (_("%pB(%pA+%#" PRIx64 "): " | |
2130 | "unresolvable %s relocation in section `%s'"), | |
2131 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
2132 | name); | |
2133 | return bfd_reloc_notsupported; | |
6e712424 PI |
2134 | } |
2135 | ||
2136 | sreloc = elf_section_data (input_section)->sreloc; | |
2137 | if (sreloc == NULL || sreloc->contents == NULL) | |
2138 | return bfd_reloc_notsupported; | |
2139 | ||
2140 | loc = sreloc->contents + sreloc->reloc_count++ * RELOC_SIZE (globals); | |
2141 | bfd_elfNN_swap_reloca_out (output_bfd, &outrel, loc); | |
2142 | ||
2143 | if (sreloc->reloc_count * RELOC_SIZE (globals) > sreloc->size) | |
2144 | { | |
2145 | /* Sanity to check that we have previously allocated | |
2146 | sufficient space in the relocation section for the | |
2147 | number of relocations we actually want to emit. */ | |
2148 | abort (); | |
2149 | } | |
2150 | ||
2151 | /* If this reloc is against an external symbol, we do not want to | |
2152 | fiddle with the addend. Otherwise, we need to include the symbol | |
2153 | value so that it becomes an addend for the dynamic reloc. */ | |
2154 | if (!relocate) | |
2155 | return bfd_reloc_ok; | |
2156 | ||
2157 | rret = check_signed_overflow (complain_overflow_signed, bfd_r_type, | |
c5ed8c63 | 2158 | input_bfd, value + addend); |
6e712424 PI |
2159 | if (rret != bfd_reloc_ok) |
2160 | return rret; | |
2161 | ||
2162 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2163 | contents, rel->r_offset, value, | |
c5ed8c63 | 2164 | addend); |
6e712424 PI |
2165 | } |
2166 | ||
2167 | skip_because_pic: | |
2168 | rret = check_signed_overflow (complain_overflow_signed, bfd_r_type, | |
c5ed8c63 | 2169 | input_bfd, value + addend); |
6e712424 PI |
2170 | if (rret != bfd_reloc_ok) |
2171 | return rret; | |
2172 | ||
2173 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2174 | contents, rel->r_offset, value, | |
c5ed8c63 | 2175 | addend); |
6e712424 PI |
2176 | break; |
2177 | ||
2178 | case BFD_RELOC_KVX_PCREL17: | |
2179 | case BFD_RELOC_KVX_PCREL27: | |
2180 | { | |
d530ba0a AM |
2181 | /* BCU insn are always first in a bundle, so there is no need |
2182 | to correct the address using offset within bundle. */ | |
6e712424 PI |
2183 | |
2184 | asection *splt = globals->root.splt; | |
2185 | bool via_plt_p = | |
2186 | splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1; | |
2187 | ||
2188 | /* A call to an undefined weak symbol is converted to a jump to | |
2189 | the next instruction unless a PLT entry will be created. | |
2190 | The jump to the next instruction is optimized as a NOP. | |
2191 | Do the same for local undefined symbols. */ | |
2192 | if (weak_undef_p && ! via_plt_p) | |
2193 | { | |
2194 | bfd_putl32 (INSN_NOP, hit_data); | |
2195 | return bfd_reloc_ok; | |
2196 | } | |
2197 | ||
2198 | /* If the call goes through a PLT entry, make sure to | |
2199 | check distance to the right destination address. */ | |
2200 | if (via_plt_p) | |
2201 | value = (splt->output_section->vma | |
2202 | + splt->output_offset + h->plt.offset); | |
2203 | ||
2204 | /* Check if a stub has to be inserted because the destination | |
2205 | is too far away. */ | |
2206 | struct elf_kvx_stub_hash_entry *stub_entry = NULL; | |
2207 | ||
2208 | /* If the target symbol is global and marked as a function the | |
2209 | relocation applies a function call or a tail call. In this | |
2210 | situation we can veneer out of range branches. The veneers | |
2211 | use R16 and R17 hence cannot be used arbitrary out of range | |
2212 | branches that occur within the body of a function. */ | |
2213 | ||
2214 | /* Check if a stub has to be inserted because the destination | |
2215 | is too far away. */ | |
2216 | if (! kvx_valid_call_p (value, place)) | |
2217 | { | |
2218 | /* The target is out of reach, so redirect the branch to | |
2219 | the local stub for this function. */ | |
2220 | stub_entry = elfNN_kvx_get_stub_entry (input_section, | |
d530ba0a AM |
2221 | sym_sec, h, |
2222 | rel, globals); | |
6e712424 PI |
2223 | if (stub_entry != NULL) |
2224 | value = (stub_entry->stub_offset | |
2225 | + stub_entry->stub_sec->output_offset | |
2226 | + stub_entry->stub_sec->output_section->vma); | |
2227 | /* We have redirected the destination to stub entry address, | |
2228 | so ignore any addend record in the original rela entry. */ | |
c5ed8c63 | 2229 | addend = 0; |
6e712424 PI |
2230 | } |
2231 | } | |
2232 | *unresolved_reloc_p = false; | |
2233 | ||
2234 | /* FALLTHROUGH */ | |
2235 | ||
2236 | /* PCREL 32 are used in dwarf2 table for exception handling */ | |
2237 | case BFD_RELOC_KVX_32_PCREL: | |
2238 | case BFD_RELOC_KVX_S64_PCREL_LO10: | |
2239 | case BFD_RELOC_KVX_S64_PCREL_UP27: | |
2240 | case BFD_RELOC_KVX_S64_PCREL_EX27: | |
2241 | case BFD_RELOC_KVX_S37_PCREL_LO10: | |
2242 | case BFD_RELOC_KVX_S37_PCREL_UP27: | |
2243 | case BFD_RELOC_KVX_S43_PCREL_LO10: | |
2244 | case BFD_RELOC_KVX_S43_PCREL_UP27: | |
2245 | case BFD_RELOC_KVX_S43_PCREL_EX6: | |
2246 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2247 | contents, rel->r_offset, value, | |
c5ed8c63 | 2248 | addend); |
6e712424 PI |
2249 | break; |
2250 | ||
2251 | case BFD_RELOC_KVX_S37_TLS_LE_LO10: | |
2252 | case BFD_RELOC_KVX_S37_TLS_LE_UP27: | |
2253 | ||
2254 | case BFD_RELOC_KVX_S43_TLS_LE_LO10: | |
2255 | case BFD_RELOC_KVX_S43_TLS_LE_UP27: | |
2256 | case BFD_RELOC_KVX_S43_TLS_LE_EX6: | |
d530ba0a AM |
2257 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
2258 | contents, rel->r_offset, | |
c5ed8c63 | 2259 | value - tpoff_base (info), addend); |
6e712424 PI |
2260 | break; |
2261 | ||
2262 | case BFD_RELOC_KVX_S37_TLS_DTPOFF_LO10: | |
2263 | case BFD_RELOC_KVX_S37_TLS_DTPOFF_UP27: | |
2264 | ||
2265 | case BFD_RELOC_KVX_S43_TLS_DTPOFF_LO10: | |
2266 | case BFD_RELOC_KVX_S43_TLS_DTPOFF_UP27: | |
2267 | case BFD_RELOC_KVX_S43_TLS_DTPOFF_EX6: | |
d530ba0a AM |
2268 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
2269 | contents, rel->r_offset, | |
c5ed8c63 | 2270 | value - dtpoff_base (info), addend); |
6e712424 PI |
2271 | |
2272 | case BFD_RELOC_KVX_S37_TLS_GD_UP27: | |
2273 | case BFD_RELOC_KVX_S37_TLS_GD_LO10: | |
2274 | ||
2275 | case BFD_RELOC_KVX_S43_TLS_GD_UP27: | |
2276 | case BFD_RELOC_KVX_S43_TLS_GD_EX6: | |
2277 | case BFD_RELOC_KVX_S43_TLS_GD_LO10: | |
2278 | ||
2279 | case BFD_RELOC_KVX_S37_TLS_IE_UP27: | |
2280 | case BFD_RELOC_KVX_S37_TLS_IE_LO10: | |
2281 | ||
2282 | case BFD_RELOC_KVX_S43_TLS_IE_UP27: | |
2283 | case BFD_RELOC_KVX_S43_TLS_IE_EX6: | |
2284 | case BFD_RELOC_KVX_S43_TLS_IE_LO10: | |
2285 | ||
2286 | case BFD_RELOC_KVX_S37_TLS_LD_UP27: | |
2287 | case BFD_RELOC_KVX_S37_TLS_LD_LO10: | |
2288 | ||
2289 | case BFD_RELOC_KVX_S43_TLS_LD_UP27: | |
2290 | case BFD_RELOC_KVX_S43_TLS_LD_EX6: | |
2291 | case BFD_RELOC_KVX_S43_TLS_LD_LO10: | |
2292 | ||
2293 | if (globals->root.sgot == NULL) | |
d530ba0a | 2294 | return bfd_reloc_notsupported; |
6e712424 PI |
2295 | value = symbol_got_offset (input_bfd, h, r_symndx); |
2296 | ||
2297 | _bfd_final_link_relocate (howto, input_bfd, input_section, | |
c5ed8c63 | 2298 | contents, rel->r_offset, value, addend); |
6e712424 PI |
2299 | *unresolved_reloc_p = false; |
2300 | break; | |
2301 | ||
2302 | case BFD_RELOC_KVX_S37_GOTADDR_UP27: | |
2303 | case BFD_RELOC_KVX_S37_GOTADDR_LO10: | |
2304 | ||
2305 | case BFD_RELOC_KVX_S43_GOTADDR_UP27: | |
2306 | case BFD_RELOC_KVX_S43_GOTADDR_EX6: | |
2307 | case BFD_RELOC_KVX_S43_GOTADDR_LO10: | |
2308 | ||
2309 | case BFD_RELOC_KVX_S64_GOTADDR_UP27: | |
2310 | case BFD_RELOC_KVX_S64_GOTADDR_EX27: | |
2311 | case BFD_RELOC_KVX_S64_GOTADDR_LO10: | |
2312 | { | |
2313 | if (globals->root.sgot == NULL) | |
2314 | BFD_ASSERT (h != NULL); | |
2315 | ||
2316 | value = globals->root.sgot->output_section->vma | |
2317 | + globals->root.sgot->output_offset; | |
2318 | ||
2319 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2320 | contents, rel->r_offset, value, | |
c5ed8c63 | 2321 | addend); |
6e712424 PI |
2322 | } |
2323 | break; | |
2324 | ||
2325 | case BFD_RELOC_KVX_S37_GOTOFF_LO10: | |
2326 | case BFD_RELOC_KVX_S37_GOTOFF_UP27: | |
2327 | ||
2328 | case BFD_RELOC_KVX_32_GOTOFF: | |
2329 | case BFD_RELOC_KVX_64_GOTOFF: | |
2330 | ||
2331 | case BFD_RELOC_KVX_S43_GOTOFF_LO10: | |
2332 | case BFD_RELOC_KVX_S43_GOTOFF_UP27: | |
2333 | case BFD_RELOC_KVX_S43_GOTOFF_EX6: | |
2334 | ||
2335 | { | |
2336 | asection *basegot = globals->root.sgot; | |
2337 | /* BFD_ASSERT(h == NULL); */ | |
2338 | BFD_ASSERT(globals->root.sgot != NULL); | |
2339 | value -= basegot->output_section->vma + basegot->output_offset; | |
2340 | return _bfd_final_link_relocate (howto, input_bfd, input_section, | |
2341 | contents, rel->r_offset, value, | |
c5ed8c63 | 2342 | addend); |
6e712424 PI |
2343 | } |
2344 | break; | |
2345 | ||
2346 | case BFD_RELOC_KVX_S37_GOT_LO10: | |
2347 | case BFD_RELOC_KVX_S37_GOT_UP27: | |
2348 | ||
2349 | case BFD_RELOC_KVX_32_GOT: | |
2350 | case BFD_RELOC_KVX_64_GOT: | |
2351 | ||
2352 | case BFD_RELOC_KVX_S43_GOT_LO10: | |
2353 | case BFD_RELOC_KVX_S43_GOT_UP27: | |
2354 | case BFD_RELOC_KVX_S43_GOT_EX6: | |
2355 | ||
2356 | if (globals->root.sgot == NULL) | |
2357 | BFD_ASSERT (h != NULL); | |
2358 | ||
2359 | if (h != NULL) | |
2360 | { | |
2361 | value = kvx_calculate_got_entry_vma (h, globals, info, value, | |
d530ba0a AM |
2362 | output_bfd, |
2363 | unresolved_reloc_p); | |
6e712424 PI |
2364 | #ifdef UGLY_DEBUG |
2365 | printf("GOT_LO/HI for %s, value %x\n", h->root.root.string, value); | |
2366 | #endif | |
2367 | ||
6e712424 PI |
2368 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
2369 | contents, rel->r_offset, value, | |
c5ed8c63 | 2370 | addend); |
6e712424 PI |
2371 | } |
2372 | else | |
2373 | { | |
2374 | #ifdef UGLY_DEBUG | |
2375 | printf("GOT_LO/HI with h NULL, initial value %x\n", value); | |
2376 | #endif | |
d530ba0a | 2377 | struct elf_kvx_local_symbol *locals = elf_kvx_locals (input_bfd); |
6e712424 | 2378 | |
d530ba0a AM |
2379 | if (locals == NULL) |
2380 | { | |
2381 | int howto_index = bfd_r_type - BFD_RELOC_KVX_RELOC_START; | |
2382 | _bfd_error_handler | |
2383 | /* xgettext:c-format */ | |
2384 | (_("%pB: local symbol descriptor table be NULL when applying " | |
2385 | "relocation %s against local symbol"), | |
2386 | input_bfd, elf_kvx_howto_table[howto_index].name); | |
2387 | abort (); | |
2388 | } | |
6e712424 | 2389 | |
d530ba0a AM |
2390 | off = symbol_got_offset (input_bfd, h, r_symndx); |
2391 | base_got = globals->root.sgot; | |
2392 | bfd_vma got_entry_addr = (base_got->output_section->vma | |
2393 | + base_got->output_offset + off); | |
6e712424 | 2394 | |
d530ba0a AM |
2395 | if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
2396 | { | |
2397 | bfd_put_64 (output_bfd, value, base_got->contents + off); | |
6e712424 | 2398 | |
d530ba0a AM |
2399 | if (bfd_link_pic (info)) |
2400 | { | |
2401 | asection *s; | |
2402 | Elf_Internal_Rela outrel; | |
2403 | ||
2404 | /* For PIC executables and shared libraries we need | |
2405 | to relocate the GOT entry at run time. */ | |
2406 | s = globals->root.srelgot; | |
2407 | if (s == NULL) | |
2408 | abort (); | |
2409 | ||
2410 | outrel.r_offset = got_entry_addr; | |
2411 | outrel.r_info = ELFNN_R_INFO (0, R_KVX_RELATIVE); | |
2412 | outrel.r_addend = value; | |
2413 | elf_append_rela (output_bfd, s, &outrel); | |
2414 | } | |
6e712424 | 2415 | |
d530ba0a AM |
2416 | symbol_got_offset_mark (input_bfd, h, r_symndx); |
2417 | } | |
6e712424 | 2418 | |
d530ba0a AM |
2419 | /* Update the relocation value to GOT entry addr as we have |
2420 | transformed the direct data access into an indirect data | |
2421 | access through GOT. */ | |
2422 | value = got_entry_addr; | |
6e712424 | 2423 | |
d530ba0a | 2424 | return _bfd_final_link_relocate (howto, input_bfd, input_section, |
c5ed8c63 | 2425 | contents, rel->r_offset, off, 0); |
6e712424 PI |
2426 | } |
2427 | break; | |
2428 | ||
2429 | default: | |
2430 | return bfd_reloc_notsupported; | |
2431 | } | |
2432 | ||
2433 | if (saved_addend) | |
2434 | *saved_addend = value; | |
2435 | ||
2436 | /* Only apply the final relocation in a sequence. */ | |
2437 | if (save_addend) | |
2438 | return bfd_reloc_continue; | |
2439 | ||
2440 | return _bfd_kvx_elf_put_addend (input_bfd, hit_data, bfd_r_type, | |
d530ba0a | 2441 | howto, value); |
6e712424 PI |
2442 | } |
2443 | ||
2444 | ||
2445 | ||
2446 | /* Relocate a KVX ELF section. */ | |
2447 | ||
2448 | static int | |
2449 | elfNN_kvx_relocate_section (bfd *output_bfd, | |
d530ba0a AM |
2450 | struct bfd_link_info *info, |
2451 | bfd *input_bfd, | |
2452 | asection *input_section, | |
2453 | bfd_byte *contents, | |
2454 | Elf_Internal_Rela *relocs, | |
2455 | Elf_Internal_Sym *local_syms, | |
2456 | asection **local_sections) | |
6e712424 PI |
2457 | { |
2458 | Elf_Internal_Shdr *symtab_hdr; | |
2459 | struct elf_link_hash_entry **sym_hashes; | |
2460 | Elf_Internal_Rela *rel; | |
2461 | Elf_Internal_Rela *relend; | |
2462 | const char *name; | |
2463 | struct elf_kvx_link_hash_table *globals; | |
2464 | bool save_addend = false; | |
2465 | bfd_vma addend = 0; | |
2466 | ||
2467 | globals = elf_kvx_hash_table (info); | |
2468 | ||
2469 | symtab_hdr = &elf_symtab_hdr (input_bfd); | |
2470 | sym_hashes = elf_sym_hashes (input_bfd); | |
2471 | ||
2472 | rel = relocs; | |
2473 | relend = relocs + input_section->reloc_count; | |
2474 | for (; rel < relend; rel++) | |
2475 | { | |
2476 | unsigned int r_type; | |
2477 | bfd_reloc_code_real_type bfd_r_type; | |
2478 | reloc_howto_type *howto; | |
2479 | unsigned long r_symndx; | |
2480 | Elf_Internal_Sym *sym; | |
2481 | asection *sec; | |
2482 | struct elf_link_hash_entry *h; | |
2483 | bfd_vma relocation; | |
2484 | bfd_reloc_status_type r; | |
2485 | arelent bfd_reloc; | |
2486 | char sym_type; | |
2487 | bool unresolved_reloc = false; | |
2488 | char *error_message = NULL; | |
2489 | ||
2490 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
2491 | r_type = ELFNN_R_TYPE (rel->r_info); | |
2492 | ||
2493 | bfd_reloc.howto = elfNN_kvx_howto_from_type (input_bfd, r_type); | |
2494 | howto = bfd_reloc.howto; | |
2495 | ||
2496 | if (howto == NULL) | |
d530ba0a | 2497 | return _bfd_unrecognized_reloc (input_bfd, input_section, r_type); |
6e712424 PI |
2498 | |
2499 | bfd_r_type = elfNN_kvx_bfd_reloc_from_howto (howto); | |
2500 | ||
2501 | h = NULL; | |
2502 | sym = NULL; | |
2503 | sec = NULL; | |
2504 | ||
2505 | if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */ | |
2506 | { | |
2507 | sym = local_syms + r_symndx; | |
2508 | sym_type = ELFNN_ST_TYPE (sym->st_info); | |
2509 | sec = local_sections[r_symndx]; | |
2510 | ||
2511 | /* An object file might have a reference to a local | |
2512 | undefined symbol. This is a draft object file, but we | |
2513 | should at least do something about it. */ | |
2514 | if (r_type != R_KVX_NONE | |
2515 | && r_type != R_KVX_S37_GOTADDR_LO10 | |
2516 | && r_type != R_KVX_S37_GOTADDR_UP27 | |
2517 | && r_type != R_KVX_S64_GOTADDR_LO10 | |
2518 | && r_type != R_KVX_S64_GOTADDR_UP27 | |
2519 | && r_type != R_KVX_S64_GOTADDR_EX27 | |
2520 | && r_type != R_KVX_S43_GOTADDR_LO10 | |
2521 | && r_type != R_KVX_S43_GOTADDR_UP27 | |
2522 | && r_type != R_KVX_S43_GOTADDR_EX6 | |
2523 | && bfd_is_und_section (sec) | |
2524 | && ELF_ST_BIND (sym->st_info) != STB_WEAK) | |
d530ba0a AM |
2525 | (*info->callbacks->undefined_symbol) |
2526 | (info, bfd_elf_string_from_elf_section | |
2527 | (input_bfd, symtab_hdr->sh_link, sym->st_name), | |
2528 | input_bfd, input_section, rel->r_offset, true); | |
6e712424 PI |
2529 | |
2530 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); | |
2531 | } | |
2532 | else | |
2533 | { | |
2534 | bool warned, ignored; | |
2535 | ||
2536 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
2537 | r_symndx, symtab_hdr, sym_hashes, | |
2538 | h, sec, relocation, | |
2539 | unresolved_reloc, warned, ignored); | |
2540 | ||
2541 | sym_type = h->type; | |
2542 | } | |
2543 | ||
2544 | if (sec != NULL && discarded_section (sec)) | |
2545 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, | |
2546 | rel, 1, relend, howto, 0, contents); | |
2547 | ||
2548 | if (bfd_link_relocatable (info)) | |
2549 | continue; | |
2550 | ||
2551 | if (h != NULL) | |
2552 | name = h->root.root.string; | |
2553 | else | |
2554 | { | |
2555 | name = (bfd_elf_string_from_elf_section | |
2556 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
2557 | if (name == NULL || *name == '\0') | |
2558 | name = bfd_section_name (sec); | |
2559 | } | |
2560 | ||
2561 | if (r_symndx != 0 | |
2562 | && r_type != R_KVX_NONE | |
2563 | && (h == NULL | |
2564 | || h->root.type == bfd_link_hash_defined | |
2565 | || h->root.type == bfd_link_hash_defweak) | |
2566 | && IS_KVX_TLS_RELOC (bfd_r_type) != (sym_type == STT_TLS)) | |
2567 | { | |
2568 | (*_bfd_error_handler) | |
2569 | ((sym_type == STT_TLS | |
d530ba0a | 2570 | /* xgettext:c-format */ |
835f16da | 2571 | ? _("%pB(%pA+%#" PRIx64 "): %s used with TLS symbol %s") |
d530ba0a | 2572 | /* xgettext:c-format */ |
835f16da | 2573 | : _("%pB(%pA+%#" PRIx64 "): %s used with non-TLS symbol %s")), |
6e712424 | 2574 | input_bfd, |
835f16da | 2575 | input_section, (uint64_t) rel->r_offset, howto->name, name); |
6e712424 PI |
2576 | } |
2577 | ||
2578 | /* Original aarch64 has relaxation handling for TLS here. */ | |
2579 | r = bfd_reloc_continue; | |
2580 | ||
2581 | /* There may be multiple consecutive relocations for the | |
d530ba0a AM |
2582 | same offset. In that case we are supposed to treat the |
2583 | output of each relocation as the addend for the next. */ | |
6e712424 PI |
2584 | if (rel + 1 < relend |
2585 | && rel->r_offset == rel[1].r_offset | |
2586 | && ELFNN_R_TYPE (rel[1].r_info) != R_KVX_NONE) | |
2587 | ||
2588 | save_addend = true; | |
2589 | else | |
2590 | save_addend = false; | |
2591 | ||
2592 | if (r == bfd_reloc_continue) | |
2593 | r = elfNN_kvx_final_link_relocate (howto, input_bfd, output_bfd, | |
d530ba0a AM |
2594 | input_section, contents, rel, |
2595 | relocation, info, sec, | |
2596 | h, &unresolved_reloc, | |
2597 | save_addend, &addend, sym); | |
6e712424 PI |
2598 | |
2599 | switch (elfNN_kvx_bfd_reloc_from_type (input_bfd, r_type)) | |
d530ba0a | 2600 | { |
6e712424 | 2601 | case BFD_RELOC_KVX_S37_TLS_GD_LO10: |
d530ba0a AM |
2602 | case BFD_RELOC_KVX_S37_TLS_GD_UP27: |
2603 | ||
2604 | case BFD_RELOC_KVX_S43_TLS_GD_LO10: | |
2605 | case BFD_RELOC_KVX_S43_TLS_GD_UP27: | |
2606 | case BFD_RELOC_KVX_S43_TLS_GD_EX6: | |
2607 | ||
2608 | case BFD_RELOC_KVX_S37_TLS_LD_LO10: | |
2609 | case BFD_RELOC_KVX_S37_TLS_LD_UP27: | |
2610 | ||
2611 | case BFD_RELOC_KVX_S43_TLS_LD_LO10: | |
2612 | case BFD_RELOC_KVX_S43_TLS_LD_UP27: | |
2613 | case BFD_RELOC_KVX_S43_TLS_LD_EX6: | |
2614 | ||
2615 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) | |
2616 | { | |
2617 | bool need_relocs = false; | |
2618 | bfd_byte *loc; | |
2619 | int indx; | |
2620 | bfd_vma off; | |
2621 | ||
2622 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
2623 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2624 | ||
2625 | need_relocs = | |
2626 | (bfd_link_pic (info) || indx != 0) && | |
2627 | (h == NULL | |
2628 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2629 | || h->root.type != bfd_link_hash_undefweak); | |
2630 | ||
2631 | BFD_ASSERT (globals->root.srelgot != NULL); | |
2632 | ||
2633 | if (need_relocs) | |
2634 | { | |
2635 | Elf_Internal_Rela rela; | |
2636 | rela.r_info = ELFNN_R_INFO (indx, R_KVX_64_DTPMOD); | |
2637 | rela.r_addend = 0; | |
2638 | rela.r_offset = globals->root.sgot->output_section->vma + | |
2639 | globals->root.sgot->output_offset + off; | |
2640 | ||
2641 | loc = globals->root.srelgot->contents; | |
2642 | loc += globals->root.srelgot->reloc_count++ | |
2643 | * RELOC_SIZE (htab); | |
2644 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); | |
6e712424 PI |
2645 | |
2646 | bfd_reloc_code_real_type real_type = | |
2647 | elfNN_kvx_bfd_reloc_from_type (input_bfd, r_type); | |
2648 | ||
2649 | if (real_type == BFD_RELOC_KVX_S37_TLS_LD_LO10 | |
2650 | || real_type == BFD_RELOC_KVX_S37_TLS_LD_UP27 | |
2651 | || real_type == BFD_RELOC_KVX_S43_TLS_LD_LO10 | |
2652 | || real_type == BFD_RELOC_KVX_S43_TLS_LD_UP27 | |
2653 | || real_type == BFD_RELOC_KVX_S43_TLS_LD_EX6) | |
2654 | { | |
2655 | /* For local dynamic, don't generate DTPOFF in any case. | |
2656 | Initialize the DTPOFF slot into zero, so we get module | |
2657 | base address when invoke runtime TLS resolver. */ | |
2658 | bfd_put_NN (output_bfd, 0, | |
2659 | globals->root.sgot->contents + off | |
2660 | + GOT_ENTRY_SIZE); | |
2661 | } | |
d530ba0a AM |
2662 | else if (indx == 0) |
2663 | { | |
2664 | bfd_put_NN (output_bfd, | |
2665 | relocation - dtpoff_base (info), | |
2666 | globals->root.sgot->contents + off | |
2667 | + GOT_ENTRY_SIZE); | |
2668 | } | |
2669 | else | |
2670 | { | |
2671 | /* This TLS symbol is global. We emit a | |
2672 | relocation to fixup the tls offset at load | |
2673 | time. */ | |
2674 | rela.r_info = | |
2675 | ELFNN_R_INFO (indx, R_KVX_64_DTPOFF); | |
2676 | rela.r_addend = 0; | |
2677 | rela.r_offset = | |
2678 | (globals->root.sgot->output_section->vma | |
2679 | + globals->root.sgot->output_offset + off | |
2680 | + GOT_ENTRY_SIZE); | |
2681 | ||
2682 | loc = globals->root.srelgot->contents; | |
2683 | loc += globals->root.srelgot->reloc_count++ | |
2684 | * RELOC_SIZE (globals); | |
2685 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); | |
2686 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
2687 | globals->root.sgot->contents + off | |
2688 | + GOT_ENTRY_SIZE); | |
2689 | } | |
2690 | } | |
2691 | else | |
2692 | { | |
2693 | bfd_put_NN (output_bfd, (bfd_vma) 1, | |
2694 | globals->root.sgot->contents + off); | |
2695 | bfd_put_NN (output_bfd, | |
2696 | relocation - dtpoff_base (info), | |
2697 | globals->root.sgot->contents + off | |
2698 | + GOT_ENTRY_SIZE); | |
2699 | } | |
2700 | ||
2701 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
2702 | } | |
2703 | break; | |
2704 | ||
2705 | case BFD_RELOC_KVX_S37_TLS_IE_LO10: | |
2706 | case BFD_RELOC_KVX_S37_TLS_IE_UP27: | |
2707 | ||
2708 | case BFD_RELOC_KVX_S43_TLS_IE_LO10: | |
2709 | case BFD_RELOC_KVX_S43_TLS_IE_UP27: | |
2710 | case BFD_RELOC_KVX_S43_TLS_IE_EX6: | |
6e712424 PI |
2711 | if (! symbol_got_offset_mark_p (input_bfd, h, r_symndx)) |
2712 | { | |
2713 | bool need_relocs = false; | |
2714 | bfd_byte *loc; | |
2715 | int indx; | |
2716 | bfd_vma off; | |
2717 | ||
2718 | off = symbol_got_offset (input_bfd, h, r_symndx); | |
2719 | ||
2720 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
2721 | ||
2722 | need_relocs = | |
2723 | (bfd_link_pic (info) || indx != 0) && | |
2724 | (h == NULL | |
2725 | || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
2726 | || h->root.type != bfd_link_hash_undefweak); | |
2727 | ||
2728 | BFD_ASSERT (globals->root.srelgot != NULL); | |
2729 | ||
2730 | if (need_relocs) | |
2731 | { | |
2732 | Elf_Internal_Rela rela; | |
2733 | ||
2734 | if (indx == 0) | |
2735 | rela.r_addend = relocation - dtpoff_base (info); | |
2736 | else | |
2737 | rela.r_addend = 0; | |
2738 | ||
2739 | rela.r_info = ELFNN_R_INFO (indx, R_KVX_64_TPOFF); | |
2740 | rela.r_offset = globals->root.sgot->output_section->vma + | |
2741 | globals->root.sgot->output_offset + off; | |
2742 | ||
2743 | loc = globals->root.srelgot->contents; | |
2744 | loc += globals->root.srelgot->reloc_count++ | |
2745 | * RELOC_SIZE (htab); | |
2746 | ||
2747 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); | |
2748 | ||
2749 | bfd_put_NN (output_bfd, rela.r_addend, | |
2750 | globals->root.sgot->contents + off); | |
2751 | } | |
2752 | else | |
2753 | bfd_put_NN (output_bfd, relocation - tpoff_base (info), | |
2754 | globals->root.sgot->contents + off); | |
2755 | ||
2756 | symbol_got_offset_mark (input_bfd, h, r_symndx); | |
2757 | } | |
2758 | break; | |
2759 | ||
d530ba0a AM |
2760 | default: |
2761 | break; | |
2762 | } | |
6e712424 PI |
2763 | |
2764 | /* Dynamic relocs are not propagated for SEC_DEBUGGING sections | |
d530ba0a AM |
2765 | because such sections are not SEC_ALLOC and thus ld.so will |
2766 | not process them. */ | |
6e712424 PI |
2767 | if (unresolved_reloc |
2768 | && !((input_section->flags & SEC_DEBUGGING) != 0 | |
2769 | && h->def_dynamic) | |
2770 | && _bfd_elf_section_offset (output_bfd, info, input_section, | |
2771 | +rel->r_offset) != (bfd_vma) - 1) | |
2772 | { | |
2773 | (*_bfd_error_handler) | |
2774 | /* xgettext:c-format */ | |
2775 | (_("%pB(%pA+%#" PRIx64 "): " | |
2776 | "unresolvable %s relocation against symbol `%s'"), | |
2777 | input_bfd, input_section, (uint64_t) rel->r_offset, howto->name, | |
2778 | h->root.root.string); | |
2779 | return false; | |
2780 | } | |
2781 | ||
2782 | if (r != bfd_reloc_ok && r != bfd_reloc_continue) | |
2783 | { | |
2784 | switch (r) | |
2785 | { | |
2786 | case bfd_reloc_overflow: | |
d530ba0a AM |
2787 | (*info->callbacks->reloc_overflow) |
2788 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, | |
2789 | input_bfd, input_section, rel->r_offset); | |
6e712424 PI |
2790 | |
2791 | /* Original aarch64 code had a check for alignement correctness */ | |
2792 | break; | |
2793 | ||
2794 | case bfd_reloc_undefined: | |
d530ba0a AM |
2795 | (*info->callbacks->undefined_symbol) |
2796 | (info, name, input_bfd, input_section, rel->r_offset, true); | |
6e712424 PI |
2797 | break; |
2798 | ||
2799 | case bfd_reloc_outofrange: | |
2800 | error_message = _("out of range"); | |
2801 | goto common_error; | |
2802 | ||
2803 | case bfd_reloc_notsupported: | |
2804 | error_message = _("unsupported relocation"); | |
2805 | goto common_error; | |
2806 | ||
2807 | case bfd_reloc_dangerous: | |
2808 | /* error_message should already be set. */ | |
2809 | goto common_error; | |
2810 | ||
2811 | default: | |
2812 | error_message = _("unknown error"); | |
2813 | /* Fall through. */ | |
2814 | ||
2815 | common_error: | |
2816 | BFD_ASSERT (error_message != NULL); | |
2817 | (*info->callbacks->reloc_dangerous) | |
d530ba0a | 2818 | (info, error_message, input_bfd, input_section, rel->r_offset); |
6e712424 PI |
2819 | break; |
2820 | } | |
2821 | } | |
2822 | ||
2823 | if (!save_addend) | |
2824 | addend = 0; | |
2825 | } | |
2826 | ||
2827 | return true; | |
2828 | } | |
2829 | ||
2830 | /* Set the right machine number. */ | |
2831 | ||
2832 | static bool | |
2833 | elfNN_kvx_object_p (bfd *abfd) | |
2834 | { | |
2835 | /* must be coherent with default arch in cpu-kvx.c */ | |
2836 | int e_set = bfd_mach_kv3_1; | |
2837 | ||
2838 | if (elf_elfheader (abfd)->e_machine == EM_KVX) | |
2839 | { | |
2840 | int e_core = elf_elfheader (abfd)->e_flags & ELF_KVX_CORE_MASK; | |
2841 | switch(e_core) | |
2842 | { | |
2843 | #if ARCH_SIZE == 64 | |
2844 | case ELF_KVX_CORE_KV3_1 : e_set = bfd_mach_kv3_1_64; break; | |
2845 | case ELF_KVX_CORE_KV3_2 : e_set = bfd_mach_kv3_2_64; break; | |
2846 | case ELF_KVX_CORE_KV4_1 : e_set = bfd_mach_kv4_1_64; break; | |
2847 | #else | |
2848 | case ELF_KVX_CORE_KV3_1 : e_set = bfd_mach_kv3_1; break; | |
2849 | case ELF_KVX_CORE_KV3_2 : e_set = bfd_mach_kv3_2; break; | |
2850 | case ELF_KVX_CORE_KV4_1 : e_set = bfd_mach_kv4_1; break; | |
2851 | #endif | |
2852 | default: | |
2853 | (*_bfd_error_handler)(_("%s: Bad ELF id: `%d'"), | |
2854 | abfd->filename, e_core); | |
2855 | } | |
2856 | } | |
2857 | return bfd_default_set_arch_mach (abfd, bfd_arch_kvx, e_set); | |
6e712424 PI |
2858 | } |
2859 | ||
2860 | /* Function to keep KVX specific flags in the ELF header. */ | |
2861 | ||
2862 | static bool | |
2863 | elfNN_kvx_set_private_flags (bfd *abfd, flagword flags) | |
2864 | { | |
2865 | if (elf_flags_init (abfd) && elf_elfheader (abfd)->e_flags != flags) | |
2866 | { | |
2867 | } | |
2868 | else | |
2869 | { | |
2870 | elf_elfheader (abfd)->e_flags = flags; | |
2871 | elf_flags_init (abfd) = true; | |
2872 | } | |
2873 | ||
2874 | return true; | |
2875 | } | |
2876 | ||
2877 | /* Merge backend specific data from an object file to the output | |
2878 | object file when linking. */ | |
2879 | ||
2880 | static bool | |
2881 | elfNN_kvx_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info) | |
2882 | { | |
d530ba0a | 2883 | bfd *obfd = info->output_bfd; |
6e712424 PI |
2884 | flagword out_flags; |
2885 | flagword in_flags; | |
2886 | bool flags_compatible = true; | |
2887 | asection *sec; | |
2888 | ||
2889 | /* Check if we have the same endianess. */ | |
2890 | if (!_bfd_generic_verify_endian_match (ibfd, info)) | |
2891 | return false; | |
2892 | ||
2893 | if (!is_kvx_elf (ibfd) || !is_kvx_elf (obfd)) | |
2894 | return true; | |
2895 | ||
2896 | /* The input BFD must have had its flags initialised. */ | |
2897 | /* The following seems bogus to me -- The flags are initialized in | |
2898 | the assembler but I don't think an elf_flags_init field is | |
2899 | written into the object. */ | |
2900 | /* BFD_ASSERT (elf_flags_init (ibfd)); */ | |
2901 | ||
2902 | if (bfd_get_arch_size (ibfd) != bfd_get_arch_size (obfd)) | |
2903 | { | |
2904 | const char *msg; | |
2905 | ||
2906 | if (bfd_get_arch_size (ibfd) == 32 | |
2907 | && bfd_get_arch_size (obfd) == 64) | |
2908 | msg = _("%s: compiled as 32-bit object and %s is 64-bit"); | |
2909 | else if (bfd_get_arch_size (ibfd) == 64 | |
2910 | && bfd_get_arch_size (obfd) == 32) | |
2911 | msg = _("%s: compiled as 64-bit object and %s is 32-bit"); | |
2912 | else | |
2913 | msg = _("%s: object size does not match that of target %s"); | |
2914 | ||
2915 | (*_bfd_error_handler) (msg, bfd_get_filename (ibfd), | |
2916 | bfd_get_filename (obfd)); | |
2917 | bfd_set_error (bfd_error_wrong_format); | |
2918 | return false; | |
2919 | } | |
2920 | ||
2921 | in_flags = elf_elfheader (ibfd)->e_flags; | |
2922 | out_flags = elf_elfheader (obfd)->e_flags; | |
2923 | ||
2924 | if (!elf_flags_init (obfd)) | |
2925 | { | |
2926 | /* If the input is the default architecture and had the default | |
d530ba0a AM |
2927 | flags then do not bother setting the flags for the output |
2928 | architecture, instead allow future merges to do this. If no | |
2929 | future merges ever set these flags then they will retain their | |
2930 | uninitialised values, which surprise surprise, correspond | |
2931 | to the default values. */ | |
6e712424 PI |
2932 | if (bfd_get_arch_info (ibfd)->the_default |
2933 | && elf_elfheader (ibfd)->e_flags == 0) | |
2934 | return true; | |
2935 | ||
2936 | elf_flags_init (obfd) = true; | |
2937 | elf_elfheader (obfd)->e_flags = in_flags; | |
2938 | ||
2939 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) | |
2940 | && bfd_get_arch_info (obfd)->the_default) | |
2941 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), | |
2942 | bfd_get_mach (ibfd)); | |
2943 | ||
2944 | return true; | |
2945 | } | |
2946 | ||
2947 | /* Identical flags must be compatible. */ | |
2948 | if (in_flags == out_flags) | |
2949 | return true; | |
2950 | ||
2951 | /* Check to see if the input BFD actually contains any sections. If | |
2952 | not, its flags may not have been initialised either, but it | |
2953 | cannot actually cause any incompatiblity. Do not short-circuit | |
2954 | dynamic objects; their section list may be emptied by | |
2955 | elf_link_add_object_symbols. | |
2956 | ||
2957 | Also check to see if there are no code sections in the input. | |
2958 | In this case there is no need to check for code specific flags. | |
2959 | XXX - do we need to worry about floating-point format compatability | |
2960 | in data sections ? */ | |
2961 | if (!(ibfd->flags & DYNAMIC)) | |
d530ba0a AM |
2962 | { |
2963 | bool null_input_bfd = true; | |
2964 | bool only_data_sections = true; | |
2965 | ||
2966 | for (sec = ibfd->sections; sec != NULL; sec = sec->next) | |
2967 | { | |
2968 | if ((bfd_section_flags (sec) | |
2969 | & (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
2970 | == (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)) | |
2971 | only_data_sections = false; | |
2972 | ||
2973 | null_input_bfd = false; | |
2974 | break; | |
2975 | } | |
2976 | ||
2977 | if (null_input_bfd || only_data_sections) | |
2978 | return true; | |
2979 | } | |
6e712424 PI |
2980 | return flags_compatible; |
2981 | } | |
2982 | ||
2983 | /* Display the flags field. */ | |
2984 | ||
2985 | static bool | |
2986 | elfNN_kvx_print_private_bfd_data (bfd *abfd, void *ptr) | |
2987 | { | |
2988 | FILE *file = (FILE *) ptr; | |
2989 | unsigned long flags; | |
2990 | ||
2991 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
2992 | ||
2993 | /* Print normal ELF private data. */ | |
2994 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
2995 | ||
2996 | flags = elf_elfheader (abfd)->e_flags; | |
2997 | /* Ignore init flag - it may not be set, despite the flags field | |
2998 | containing valid data. */ | |
2999 | ||
3000 | /* xgettext:c-format */ | |
3001 | fprintf (file, _("Private flags = 0x%lx : "), elf_elfheader (abfd)->e_flags); | |
3002 | if((flags & ELF_KVX_ABI_64B_ADDR_BIT) == ELF_KVX_ABI_64B_ADDR_BIT) | |
3003 | { | |
3004 | if (ELF_KVX_CHECK_CORE(flags,ELF_KVX_CORE_KV3_1)) | |
3005 | fprintf (file, _("Coolidge (kv3) V1 64 bits")); | |
3006 | else if (ELF_KVX_CHECK_CORE(flags,ELF_KVX_CORE_KV3_2)) | |
3007 | fprintf (file, _("Coolidge (kv3) V2 64 bits")); | |
3008 | else if (ELF_KVX_CHECK_CORE(flags,ELF_KVX_CORE_KV4_1)) | |
3009 | fprintf (file, _("Coolidge (kv4) V1 64 bits")); | |
3010 | } | |
3011 | else | |
3012 | { | |
3013 | if (ELF_KVX_CHECK_CORE(flags,ELF_KVX_CORE_KV3_1)) | |
3014 | fprintf (file, _("Coolidge (kv3) V1 32 bits")); | |
3015 | else if (ELF_KVX_CHECK_CORE(flags,ELF_KVX_CORE_KV3_2)) | |
3016 | fprintf (file, _("Coolidge (kv3) V2 32 bits")); | |
3017 | else if (ELF_KVX_CHECK_CORE(flags,ELF_KVX_CORE_KV4_1)) | |
3018 | fprintf (file, _("Coolidge (kv4) V1 32 bits")); | |
3019 | } | |
d530ba0a | 3020 | |
6e712424 PI |
3021 | fputc ('\n', file); |
3022 | ||
3023 | return true; | |
3024 | } | |
3025 | ||
3026 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
3027 | regular object. The current definition is in some section of the | |
3028 | dynamic object, but we're not including those sections. We have to | |
3029 | change the definition to something the rest of the link can | |
3030 | understand. */ | |
3031 | ||
3032 | static bool | |
3033 | elfNN_kvx_adjust_dynamic_symbol (struct bfd_link_info *info, | |
d530ba0a | 3034 | struct elf_link_hash_entry *h) |
6e712424 PI |
3035 | { |
3036 | struct elf_kvx_link_hash_table *htab; | |
3037 | asection *s; | |
3038 | ||
3039 | /* If this is a function, put it in the procedure linkage table. We | |
3040 | will fill in the contents of the procedure linkage table later, | |
3041 | when we know the address of the .got section. */ | |
3042 | if (h->type == STT_FUNC || h->needs_plt) | |
3043 | { | |
3044 | if (h->plt.refcount <= 0 | |
3045 | || ((SYMBOL_CALLS_LOCAL (info, h) | |
d530ba0a AM |
3046 | || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT |
3047 | && h->root.type == bfd_link_hash_undefweak)))) | |
6e712424 PI |
3048 | { |
3049 | /* This case can occur if we saw a CALL26 reloc in | |
3050 | an input file, but the symbol wasn't referred to | |
3051 | by a dynamic object or all references were | |
3052 | garbage collected. In which case we can end up | |
3053 | resolving. */ | |
3054 | h->plt.offset = (bfd_vma) - 1; | |
3055 | h->needs_plt = 0; | |
3056 | } | |
3057 | ||
3058 | return true; | |
3059 | } | |
3060 | else | |
3061 | /* Otherwise, reset to -1. */ | |
3062 | h->plt.offset = (bfd_vma) - 1; | |
3063 | ||
3064 | ||
3065 | /* If this is a weak symbol, and there is a real definition, the | |
3066 | processor independent code will have arranged for us to see the | |
3067 | real definition first, and we can just use the same value. */ | |
3068 | if (h->is_weakalias) | |
3069 | { | |
d530ba0a AM |
3070 | struct elf_link_hash_entry *def = weakdef (h); |
3071 | BFD_ASSERT (def->root.type == bfd_link_hash_defined); | |
3072 | h->root.u.def.section = def->root.u.def.section; | |
3073 | h->root.u.def.value = def->root.u.def.value; | |
3074 | if (ELIMINATE_COPY_RELOCS || info->nocopyreloc) | |
3075 | h->non_got_ref = def->non_got_ref; | |
3076 | return true; | |
6e712424 PI |
3077 | } |
3078 | ||
3079 | /* If we are creating a shared library, we must presume that the | |
3080 | only references to the symbol are via the global offset table. | |
3081 | For such cases we need not do anything here; the relocations will | |
3082 | be handled correctly by relocate_section. */ | |
3083 | if (bfd_link_pic (info)) | |
3084 | return true; | |
3085 | ||
3086 | /* If there are no references to this symbol that do not use the | |
3087 | GOT, we don't need to generate a copy reloc. */ | |
3088 | if (!h->non_got_ref) | |
3089 | return true; | |
3090 | ||
3091 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
3092 | if (info->nocopyreloc) | |
3093 | { | |
3094 | h->non_got_ref = 0; | |
3095 | return true; | |
3096 | } | |
3097 | ||
3098 | /* We must allocate the symbol in our .dynbss section, which will | |
3099 | become part of the .bss section of the executable. There will be | |
3100 | an entry for this symbol in the .dynsym section. The dynamic | |
3101 | object will contain position independent code, so all references | |
3102 | from the dynamic object to this symbol will go through the global | |
3103 | offset table. The dynamic linker will use the .dynsym entry to | |
3104 | determine the address it must put in the global offset table, so | |
3105 | both the dynamic object and the regular object will refer to the | |
3106 | same memory location for the variable. */ | |
3107 | ||
3108 | htab = elf_kvx_hash_table (info); | |
3109 | ||
3110 | /* We must generate a R_KVX_COPY reloc to tell the dynamic linker | |
3111 | to copy the initial value out of the dynamic object and into the | |
3112 | runtime process image. */ | |
3113 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) | |
3114 | { | |
3115 | htab->srelbss->size += RELOC_SIZE (htab); | |
3116 | h->needs_copy = 1; | |
3117 | } | |
3118 | ||
3119 | s = htab->sdynbss; | |
3120 | ||
3121 | return _bfd_elf_adjust_dynamic_copy (info, h, s); | |
6e712424 PI |
3122 | } |
3123 | ||
3124 | static bool | |
3125 | elfNN_kvx_allocate_local_symbols (bfd *abfd, unsigned number) | |
3126 | { | |
3127 | struct elf_kvx_local_symbol *locals; | |
3128 | locals = elf_kvx_locals (abfd); | |
3129 | if (locals == NULL) | |
3130 | { | |
3131 | locals = (struct elf_kvx_local_symbol *) | |
3132 | bfd_zalloc (abfd, number * sizeof (struct elf_kvx_local_symbol)); | |
3133 | if (locals == NULL) | |
3134 | return false; | |
3135 | elf_kvx_locals (abfd) = locals; | |
3136 | } | |
3137 | return true; | |
3138 | } | |
3139 | ||
3140 | /* Create the .got section to hold the global offset table. */ | |
3141 | ||
3142 | static bool | |
3143 | kvx_elf_create_got_section (bfd *abfd, struct bfd_link_info *info) | |
3144 | { | |
3145 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
3146 | flagword flags; | |
3147 | asection *s; | |
3148 | struct elf_link_hash_entry *h; | |
3149 | struct elf_link_hash_table *htab = elf_hash_table (info); | |
3150 | ||
3151 | /* This function may be called more than once. */ | |
3152 | s = bfd_get_linker_section (abfd, ".got"); | |
3153 | if (s != NULL) | |
3154 | return true; | |
3155 | ||
3156 | flags = bed->dynamic_sec_flags; | |
3157 | ||
3158 | s = bfd_make_section_anyway_with_flags (abfd, | |
3159 | (bed->rela_plts_and_copies_p | |
3160 | ? ".rela.got" : ".rel.got"), | |
3161 | (bed->dynamic_sec_flags | |
3162 | | SEC_READONLY)); | |
3163 | if (s == NULL | |
d530ba0a | 3164 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) |
6e712424 PI |
3165 | |
3166 | return false; | |
3167 | htab->srelgot = s; | |
3168 | ||
3169 | s = bfd_make_section_anyway_with_flags (abfd, ".got", flags); | |
3170 | if (s == NULL | |
3171 | || !bfd_set_section_alignment (s, bed->s->log_file_align)) | |
3172 | return false; | |
3173 | htab->sgot = s; | |
3174 | htab->sgot->size += GOT_ENTRY_SIZE; | |
3175 | ||
3176 | if (bed->want_got_sym) | |
3177 | { | |
3178 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got | |
3179 | (or .got.plt) section. We don't do this in the linker script | |
3180 | because we don't want to define the symbol if we are not creating | |
3181 | a global offset table. */ | |
3182 | h = _bfd_elf_define_linkage_sym (abfd, info, s, | |
3183 | "_GLOBAL_OFFSET_TABLE_"); | |
3184 | elf_hash_table (info)->hgot = h; | |
3185 | if (h == NULL) | |
3186 | return false; | |
3187 | } | |
3188 | ||
3189 | if (bed->want_got_plt) | |
3190 | { | |
3191 | s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags); | |
3192 | if (s == NULL | |
3193 | || !bfd_set_section_alignment (s, | |
3194 | bed->s->log_file_align)) | |
3195 | return false; | |
3196 | htab->sgotplt = s; | |
3197 | } | |
3198 | ||
3199 | /* The first bit of the global offset table is the header. */ | |
3200 | s->size += bed->got_header_size; | |
3201 | ||
3202 | /* we still need to handle got content when doing static link with PIC */ | |
3203 | if (bfd_link_executable (info) && !bfd_link_pic (info)) { | |
3204 | htab->dynobj = abfd; | |
3205 | } | |
3206 | ||
3207 | return true; | |
3208 | } | |
3209 | ||
3210 | /* Look through the relocs for a section during the first phase. */ | |
3211 | ||
3212 | static bool | |
3213 | elfNN_kvx_check_relocs (bfd *abfd, struct bfd_link_info *info, | |
3214 | asection *sec, const Elf_Internal_Rela *relocs) | |
3215 | { | |
3216 | Elf_Internal_Shdr *symtab_hdr; | |
3217 | struct elf_link_hash_entry **sym_hashes; | |
3218 | const Elf_Internal_Rela *rel; | |
3219 | const Elf_Internal_Rela *rel_end; | |
3220 | asection *sreloc; | |
3221 | ||
3222 | struct elf_kvx_link_hash_table *htab; | |
3223 | ||
3224 | if (bfd_link_relocatable (info)) | |
3225 | return true; | |
3226 | ||
3227 | BFD_ASSERT (is_kvx_elf (abfd)); | |
3228 | ||
3229 | htab = elf_kvx_hash_table (info); | |
3230 | sreloc = NULL; | |
3231 | ||
3232 | symtab_hdr = &elf_symtab_hdr (abfd); | |
3233 | sym_hashes = elf_sym_hashes (abfd); | |
3234 | ||
3235 | rel_end = relocs + sec->reloc_count; | |
3236 | for (rel = relocs; rel < rel_end; rel++) | |
3237 | { | |
3238 | struct elf_link_hash_entry *h; | |
3239 | unsigned int r_symndx; | |
3240 | unsigned int r_type; | |
3241 | bfd_reloc_code_real_type bfd_r_type; | |
3242 | Elf_Internal_Sym *isym; | |
3243 | ||
3244 | r_symndx = ELFNN_R_SYM (rel->r_info); | |
3245 | r_type = ELFNN_R_TYPE (rel->r_info); | |
3246 | ||
3247 | if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr)) | |
3248 | { | |
3249 | /* xgettext:c-format */ | |
3250 | _bfd_error_handler (_("%pB: bad symbol index: %d"), abfd, r_symndx); | |
3251 | return false; | |
3252 | } | |
3253 | ||
3254 | if (r_symndx < symtab_hdr->sh_info) | |
3255 | { | |
3256 | /* A local symbol. */ | |
3257 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
3258 | abfd, r_symndx); | |
3259 | if (isym == NULL) | |
3260 | return false; | |
3261 | ||
d530ba0a | 3262 | h = NULL; |
6e712424 PI |
3263 | } |
3264 | else | |
3265 | { | |
3266 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
3267 | while (h->root.type == bfd_link_hash_indirect | |
3268 | || h->root.type == bfd_link_hash_warning) | |
3269 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3270 | } | |
3271 | ||
3272 | /* Could be done earlier, if h were already available. */ | |
3273 | bfd_r_type = kvx_tls_transition (abfd, info, r_type, h, r_symndx); | |
3274 | ||
3275 | if (h != NULL) | |
3276 | { | |
3277 | /* Create the ifunc sections for static executables. If we | |
3278 | never see an indirect function symbol nor we are building | |
3279 | a static executable, those sections will be empty and | |
3280 | won't appear in output. */ | |
3281 | switch (bfd_r_type) | |
3282 | { | |
3283 | default: | |
3284 | break; | |
3285 | } | |
3286 | ||
3287 | /* It is referenced by a non-shared object. */ | |
3288 | h->ref_regular = 1; | |
3289 | } | |
3290 | ||
3291 | switch (bfd_r_type) | |
3292 | { | |
3293 | ||
3294 | case BFD_RELOC_KVX_S43_LO10: | |
3295 | case BFD_RELOC_KVX_S43_UP27: | |
3296 | case BFD_RELOC_KVX_S43_EX6: | |
3297 | ||
3298 | case BFD_RELOC_KVX_S37_LO10: | |
3299 | case BFD_RELOC_KVX_S37_UP27: | |
3300 | ||
3301 | case BFD_RELOC_KVX_S64_LO10: | |
3302 | case BFD_RELOC_KVX_S64_UP27: | |
3303 | case BFD_RELOC_KVX_S64_EX27: | |
3304 | ||
3305 | case BFD_RELOC_KVX_32: | |
3306 | case BFD_RELOC_KVX_64: | |
3307 | ||
3308 | /* We don't need to handle relocs into sections not going into | |
3309 | the "real" output. */ | |
3310 | if ((sec->flags & SEC_ALLOC) == 0) | |
3311 | break; | |
3312 | ||
3313 | if (h != NULL) | |
3314 | { | |
3315 | if (!bfd_link_pic (info)) | |
3316 | h->non_got_ref = 1; | |
3317 | ||
3318 | h->plt.refcount += 1; | |
3319 | h->pointer_equality_needed = 1; | |
3320 | } | |
3321 | ||
3322 | /* No need to do anything if we're not creating a shared | |
3323 | object. */ | |
3324 | if (! bfd_link_pic (info)) | |
3325 | break; | |
3326 | ||
3327 | { | |
3328 | struct elf_dyn_relocs *p; | |
3329 | struct elf_dyn_relocs **head; | |
3330 | ||
3331 | /* We must copy these reloc types into the output file. | |
3332 | Create a reloc section in dynobj and make room for | |
3333 | this reloc. */ | |
3334 | if (sreloc == NULL) | |
3335 | { | |
3336 | if (htab->root.dynobj == NULL) | |
3337 | htab->root.dynobj = abfd; | |
3338 | ||
3339 | sreloc = _bfd_elf_make_dynamic_reloc_section | |
3340 | (sec, htab->root.dynobj, LOG_FILE_ALIGN, abfd, /*rela? */ true); | |
3341 | ||
3342 | if (sreloc == NULL) | |
3343 | return false; | |
3344 | } | |
3345 | ||
3346 | /* If this is a global symbol, we count the number of | |
3347 | relocations we need for this symbol. */ | |
3348 | if (h != NULL) | |
3349 | { | |
d530ba0a | 3350 | head = &h->dyn_relocs; |
6e712424 PI |
3351 | } |
3352 | else | |
3353 | { | |
3354 | /* Track dynamic relocs needed for local syms too. | |
3355 | We really need local syms available to do this | |
3356 | easily. Oh well. */ | |
3357 | ||
3358 | asection *s; | |
3359 | void **vpp; | |
3360 | ||
3361 | isym = bfd_sym_from_r_symndx (&htab->sym_cache, | |
3362 | abfd, r_symndx); | |
3363 | if (isym == NULL) | |
3364 | return false; | |
3365 | ||
3366 | s = bfd_section_from_elf_index (abfd, isym->st_shndx); | |
3367 | if (s == NULL) | |
3368 | s = sec; | |
3369 | ||
3370 | /* Beware of type punned pointers vs strict aliasing | |
3371 | rules. */ | |
3372 | vpp = &(elf_section_data (s)->local_dynrel); | |
3373 | head = (struct elf_dyn_relocs **) vpp; | |
3374 | } | |
3375 | ||
3376 | p = *head; | |
3377 | if (p == NULL || p->sec != sec) | |
3378 | { | |
3379 | bfd_size_type amt = sizeof *p; | |
3380 | p = ((struct elf_dyn_relocs *) | |
3381 | bfd_zalloc (htab->root.dynobj, amt)); | |
3382 | if (p == NULL) | |
3383 | return false; | |
3384 | p->next = *head; | |
3385 | *head = p; | |
3386 | p->sec = sec; | |
3387 | } | |
3388 | ||
3389 | p->count += 1; | |
3390 | ||
3391 | } | |
3392 | break; | |
3393 | ||
3394 | case BFD_RELOC_KVX_S37_GOT_LO10: | |
3395 | case BFD_RELOC_KVX_S37_GOT_UP27: | |
3396 | ||
3397 | case BFD_RELOC_KVX_S37_GOTOFF_LO10: | |
3398 | case BFD_RELOC_KVX_S37_GOTOFF_UP27: | |
3399 | ||
3400 | case BFD_RELOC_KVX_S43_GOT_LO10: | |
3401 | case BFD_RELOC_KVX_S43_GOT_UP27: | |
3402 | case BFD_RELOC_KVX_S43_GOT_EX6: | |
3403 | ||
3404 | case BFD_RELOC_KVX_S43_GOTOFF_LO10: | |
3405 | case BFD_RELOC_KVX_S43_GOTOFF_UP27: | |
3406 | case BFD_RELOC_KVX_S43_GOTOFF_EX6: | |
3407 | ||
3408 | case BFD_RELOC_KVX_S37_TLS_GD_LO10: | |
3409 | case BFD_RELOC_KVX_S37_TLS_GD_UP27: | |
3410 | ||
3411 | case BFD_RELOC_KVX_S43_TLS_GD_LO10: | |
3412 | case BFD_RELOC_KVX_S43_TLS_GD_UP27: | |
3413 | case BFD_RELOC_KVX_S43_TLS_GD_EX6: | |
3414 | ||
3415 | case BFD_RELOC_KVX_S37_TLS_IE_LO10: | |
3416 | case BFD_RELOC_KVX_S37_TLS_IE_UP27: | |
3417 | ||
3418 | case BFD_RELOC_KVX_S43_TLS_IE_LO10: | |
3419 | case BFD_RELOC_KVX_S43_TLS_IE_UP27: | |
3420 | case BFD_RELOC_KVX_S43_TLS_IE_EX6: | |
3421 | ||
3422 | case BFD_RELOC_KVX_S37_TLS_LD_LO10: | |
3423 | case BFD_RELOC_KVX_S37_TLS_LD_UP27: | |
3424 | ||
3425 | case BFD_RELOC_KVX_S43_TLS_LD_LO10: | |
3426 | case BFD_RELOC_KVX_S43_TLS_LD_UP27: | |
3427 | case BFD_RELOC_KVX_S43_TLS_LD_EX6: | |
3428 | { | |
3429 | unsigned got_type; | |
3430 | unsigned old_got_type; | |
3431 | ||
3432 | got_type = kvx_reloc_got_type (bfd_r_type); | |
3433 | ||
3434 | if (h) | |
3435 | { | |
3436 | h->got.refcount += 1; | |
3437 | old_got_type = elf_kvx_hash_entry (h)->got_type; | |
3438 | } | |
3439 | else | |
3440 | { | |
3441 | struct elf_kvx_local_symbol *locals; | |
3442 | ||
3443 | if (!elfNN_kvx_allocate_local_symbols | |
3444 | (abfd, symtab_hdr->sh_info)) | |
3445 | return false; | |
3446 | ||
3447 | locals = elf_kvx_locals (abfd); | |
3448 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); | |
3449 | locals[r_symndx].got_refcount += 1; | |
3450 | old_got_type = locals[r_symndx].got_type; | |
3451 | } | |
3452 | ||
3453 | /* We will already have issued an error message if there | |
3454 | is a TLS/non-TLS mismatch, based on the symbol type. | |
3455 | So just combine any TLS types needed. */ | |
3456 | if (old_got_type != GOT_UNKNOWN && old_got_type != GOT_NORMAL | |
3457 | && got_type != GOT_NORMAL) | |
3458 | got_type |= old_got_type; | |
3459 | ||
3460 | /* If the symbol is accessed by both IE and GD methods, we | |
3461 | are able to relax. Turn off the GD flag, without | |
3462 | messing up with any other kind of TLS types that may be | |
3463 | involved. */ | |
3464 | /* Disabled untested and unused TLS */ | |
3465 | /* if ((got_type & GOT_TLS_IE) && GOT_TLS_GD_ANY_P (got_type)) */ | |
3466 | /* got_type &= ~ (GOT_TLSDESC_GD | GOT_TLS_GD); */ | |
3467 | ||
3468 | if (old_got_type != got_type) | |
3469 | { | |
3470 | if (h != NULL) | |
3471 | elf_kvx_hash_entry (h)->got_type = got_type; | |
3472 | else | |
3473 | { | |
3474 | struct elf_kvx_local_symbol *locals; | |
3475 | locals = elf_kvx_locals (abfd); | |
3476 | BFD_ASSERT (r_symndx < symtab_hdr->sh_info); | |
3477 | locals[r_symndx].got_type = got_type; | |
3478 | } | |
3479 | } | |
3480 | ||
3481 | if (htab->root.dynobj == NULL) | |
3482 | htab->root.dynobj = abfd; | |
3483 | if (! kvx_elf_create_got_section (htab->root.dynobj, info)) | |
3484 | return false; | |
3485 | break; | |
3486 | } | |
3487 | ||
3488 | case BFD_RELOC_KVX_S64_GOTADDR_LO10: | |
3489 | case BFD_RELOC_KVX_S64_GOTADDR_UP27: | |
3490 | case BFD_RELOC_KVX_S64_GOTADDR_EX27: | |
3491 | ||
3492 | case BFD_RELOC_KVX_S43_GOTADDR_LO10: | |
3493 | case BFD_RELOC_KVX_S43_GOTADDR_UP27: | |
3494 | case BFD_RELOC_KVX_S43_GOTADDR_EX6: | |
3495 | ||
3496 | case BFD_RELOC_KVX_S37_GOTADDR_LO10: | |
3497 | case BFD_RELOC_KVX_S37_GOTADDR_UP27: | |
3498 | ||
d530ba0a AM |
3499 | if (htab->root.dynobj == NULL) |
3500 | htab->root.dynobj = abfd; | |
3501 | if (! kvx_elf_create_got_section (htab->root.dynobj, info)) | |
3502 | return false; | |
3503 | break; | |
6e712424 PI |
3504 | |
3505 | case BFD_RELOC_KVX_PCREL27: | |
3506 | case BFD_RELOC_KVX_PCREL17: | |
3507 | /* If this is a local symbol then we resolve it | |
3508 | directly without creating a PLT entry. */ | |
3509 | if (h == NULL) | |
3510 | continue; | |
3511 | ||
3512 | h->needs_plt = 1; | |
3513 | if (h->plt.refcount <= 0) | |
3514 | h->plt.refcount = 1; | |
3515 | else | |
3516 | h->plt.refcount += 1; | |
3517 | break; | |
3518 | ||
3519 | default: | |
3520 | break; | |
3521 | } | |
3522 | } | |
3523 | ||
3524 | return true; | |
3525 | } | |
3526 | ||
3527 | static bool | |
3528 | elfNN_kvx_init_file_header (bfd *abfd, struct bfd_link_info *link_info) | |
3529 | { | |
3530 | Elf_Internal_Ehdr *i_ehdrp; /* ELF file header, internal form. */ | |
3531 | ||
3532 | if (!_bfd_elf_init_file_header (abfd, link_info)) | |
3533 | return false; | |
3534 | ||
3535 | i_ehdrp = elf_elfheader (abfd); | |
3536 | i_ehdrp->e_ident[EI_ABIVERSION] = KVX_ELF_ABI_VERSION; | |
3537 | return true; | |
3538 | } | |
3539 | ||
3540 | static enum elf_reloc_type_class | |
3541 | elfNN_kvx_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
3542 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
3543 | const Elf_Internal_Rela *rela) | |
3544 | { | |
3545 | switch ((int) ELFNN_R_TYPE (rela->r_info)) | |
3546 | { | |
3547 | case R_KVX_RELATIVE: | |
3548 | return reloc_class_relative; | |
3549 | case R_KVX_JMP_SLOT: | |
3550 | return reloc_class_plt; | |
3551 | case R_KVX_COPY: | |
3552 | return reloc_class_copy; | |
3553 | default: | |
3554 | return reloc_class_normal; | |
3555 | } | |
3556 | } | |
3557 | ||
3558 | /* A structure used to record a list of sections, independently | |
3559 | of the next and prev fields in the asection structure. */ | |
3560 | typedef struct section_list | |
3561 | { | |
3562 | asection *sec; | |
3563 | struct section_list *next; | |
3564 | struct section_list *prev; | |
3565 | } | |
3566 | section_list; | |
3567 | ||
3568 | typedef struct | |
3569 | { | |
3570 | void *finfo; | |
3571 | struct bfd_link_info *info; | |
3572 | asection *sec; | |
3573 | int sec_shndx; | |
3574 | int (*func) (void *, const char *, Elf_Internal_Sym *, | |
3575 | asection *, struct elf_link_hash_entry *); | |
3576 | } output_arch_syminfo; | |
3577 | ||
3578 | /* Output a single local symbol for a generated stub. */ | |
3579 | ||
3580 | static bool | |
3581 | elfNN_kvx_output_stub_sym (output_arch_syminfo *osi, const char *name, | |
3582 | bfd_vma offset, bfd_vma size) | |
3583 | { | |
3584 | Elf_Internal_Sym sym; | |
3585 | ||
3586 | sym.st_value = (osi->sec->output_section->vma | |
3587 | + osi->sec->output_offset + offset); | |
3588 | sym.st_size = size; | |
3589 | sym.st_other = 0; | |
3590 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_FUNC); | |
3591 | sym.st_shndx = osi->sec_shndx; | |
3592 | return osi->func (osi->finfo, name, &sym, osi->sec, NULL) == 1; | |
3593 | } | |
3594 | ||
3595 | static bool | |
3596 | kvx_map_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg) | |
3597 | { | |
3598 | struct elf_kvx_stub_hash_entry *stub_entry; | |
3599 | asection *stub_sec; | |
3600 | bfd_vma addr; | |
3601 | char *stub_name; | |
3602 | output_arch_syminfo *osi; | |
3603 | ||
3604 | /* Massage our args to the form they really have. */ | |
3605 | stub_entry = (struct elf_kvx_stub_hash_entry *) gen_entry; | |
3606 | osi = (output_arch_syminfo *) in_arg; | |
3607 | ||
3608 | stub_sec = stub_entry->stub_sec; | |
3609 | ||
3610 | /* Ensure this stub is attached to the current section being | |
3611 | processed. */ | |
3612 | if (stub_sec != osi->sec) | |
3613 | return true; | |
3614 | ||
3615 | addr = (bfd_vma) stub_entry->stub_offset; | |
3616 | ||
3617 | stub_name = stub_entry->output_name; | |
3618 | ||
3619 | switch (stub_entry->stub_type) | |
3620 | { | |
3621 | case kvx_stub_long_branch: | |
3622 | if (!elfNN_kvx_output_stub_sym | |
3623 | (osi, stub_name, addr, sizeof (elfNN_kvx_long_branch_stub))) | |
3624 | return false; | |
3625 | break; | |
3626 | ||
3627 | default: | |
3628 | abort (); | |
3629 | } | |
3630 | ||
3631 | return true; | |
3632 | } | |
3633 | ||
3634 | /* Output mapping symbols for linker generated sections. */ | |
3635 | ||
3636 | static bool | |
3637 | elfNN_kvx_output_arch_local_syms (bfd *output_bfd, | |
d530ba0a AM |
3638 | struct bfd_link_info *info, |
3639 | void *finfo, | |
3640 | int (*func) (void *, const char *, | |
3641 | Elf_Internal_Sym *, | |
3642 | asection *, | |
3643 | struct elf_link_hash_entry *)) | |
6e712424 PI |
3644 | { |
3645 | output_arch_syminfo osi; | |
3646 | struct elf_kvx_link_hash_table *htab; | |
3647 | ||
3648 | htab = elf_kvx_hash_table (info); | |
3649 | ||
3650 | osi.finfo = finfo; | |
3651 | osi.info = info; | |
3652 | osi.func = func; | |
3653 | ||
3654 | /* Long calls stubs. */ | |
3655 | if (htab->stub_bfd && htab->stub_bfd->sections) | |
3656 | { | |
3657 | asection *stub_sec; | |
3658 | ||
3659 | for (stub_sec = htab->stub_bfd->sections; | |
3660 | stub_sec != NULL; stub_sec = stub_sec->next) | |
3661 | { | |
3662 | /* Ignore non-stub sections. */ | |
3663 | if (!strstr (stub_sec->name, STUB_SUFFIX)) | |
3664 | continue; | |
3665 | ||
3666 | osi.sec = stub_sec; | |
3667 | ||
3668 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
3669 | (output_bfd, osi.sec->output_section); | |
3670 | ||
3671 | bfd_hash_traverse (&htab->stub_hash_table, kvx_map_one_stub, | |
3672 | &osi); | |
3673 | } | |
3674 | } | |
3675 | ||
3676 | /* Finally, output mapping symbols for the PLT. */ | |
3677 | if (!htab->root.splt || htab->root.splt->size == 0) | |
3678 | return true; | |
3679 | ||
3680 | osi.sec_shndx = _bfd_elf_section_from_bfd_section | |
3681 | (output_bfd, htab->root.splt->output_section); | |
3682 | osi.sec = htab->root.splt; | |
3683 | ||
3684 | return true; | |
3685 | ||
3686 | } | |
3687 | ||
3688 | /* Allocate target specific section data. */ | |
3689 | ||
3690 | static bool | |
3691 | elfNN_kvx_new_section_hook (bfd *abfd, asection *sec) | |
3692 | { | |
3693 | if (!sec->used_by_bfd) | |
3694 | { | |
3695 | _kvx_elf_section_data *sdata; | |
3696 | bfd_size_type amt = sizeof (*sdata); | |
3697 | ||
3698 | sdata = bfd_zalloc (abfd, amt); | |
3699 | if (sdata == NULL) | |
3700 | return false; | |
3701 | sec->used_by_bfd = sdata; | |
3702 | } | |
3703 | ||
3704 | return _bfd_elf_new_section_hook (abfd, sec); | |
3705 | } | |
3706 | ||
3707 | /* Create dynamic sections. This is different from the ARM backend in that | |
3708 | the got, plt, gotplt and their relocation sections are all created in the | |
3709 | standard part of the bfd elf backend. */ | |
3710 | ||
3711 | static bool | |
3712 | elfNN_kvx_create_dynamic_sections (bfd *dynobj, | |
d530ba0a | 3713 | struct bfd_link_info *info) |
6e712424 PI |
3714 | { |
3715 | struct elf_kvx_link_hash_table *htab; | |
3716 | ||
3717 | /* We need to create .got section. */ | |
3718 | if (!kvx_elf_create_got_section (dynobj, info)) | |
3719 | return false; | |
3720 | ||
3721 | if (!_bfd_elf_create_dynamic_sections (dynobj, info)) | |
3722 | return false; | |
3723 | ||
3724 | htab = elf_kvx_hash_table (info); | |
3725 | htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss"); | |
3726 | if (!bfd_link_pic (info)) | |
3727 | htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss"); | |
3728 | ||
3729 | if (!htab->sdynbss || (!bfd_link_pic (info) && !htab->srelbss)) | |
3730 | abort (); | |
3731 | ||
3732 | return true; | |
3733 | } | |
3734 | ||
3735 | ||
3736 | /* Allocate space in .plt, .got and associated reloc sections for | |
3737 | dynamic relocs. */ | |
3738 | ||
3739 | static bool | |
3740 | elfNN_kvx_allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf) | |
3741 | { | |
3742 | struct bfd_link_info *info; | |
3743 | struct elf_kvx_link_hash_table *htab; | |
3744 | struct elf_dyn_relocs *p; | |
3745 | ||
3746 | /* An example of a bfd_link_hash_indirect symbol is versioned | |
3747 | symbol. For example: __gxx_personality_v0(bfd_link_hash_indirect) | |
3748 | -> __gxx_personality_v0(bfd_link_hash_defined) | |
3749 | ||
3750 | There is no need to process bfd_link_hash_indirect symbols here | |
3751 | because we will also be presented with the concrete instance of | |
3752 | the symbol and elfNN_kvx_copy_indirect_symbol () will have been | |
3753 | called to copy all relevant data from the generic to the concrete | |
d530ba0a | 3754 | symbol instance. */ |
6e712424 PI |
3755 | if (h->root.type == bfd_link_hash_indirect) |
3756 | return true; | |
3757 | ||
3758 | if (h->root.type == bfd_link_hash_warning) | |
3759 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
3760 | ||
3761 | info = (struct bfd_link_info *) inf; | |
3762 | htab = elf_kvx_hash_table (info); | |
3763 | ||
3764 | if (htab->root.dynamic_sections_created && h->plt.refcount > 0) | |
3765 | { | |
3766 | /* Make sure this symbol is output as a dynamic symbol. | |
d530ba0a | 3767 | Undefined weak syms won't yet be marked as dynamic. */ |
6e712424 PI |
3768 | if (h->dynindx == -1 && !h->forced_local) |
3769 | { | |
3770 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3771 | return false; | |
3772 | } | |
3773 | ||
3774 | if (bfd_link_pic (info) || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h)) | |
3775 | { | |
3776 | asection *s = htab->root.splt; | |
3777 | ||
3778 | /* If this is the first .plt entry, make room for the special | |
3779 | first entry. */ | |
3780 | if (s->size == 0) | |
3781 | s->size += htab->plt_header_size; | |
3782 | ||
3783 | h->plt.offset = s->size; | |
3784 | ||
3785 | /* If this symbol is not defined in a regular file, and we are | |
3786 | not generating a shared library, then set the symbol to this | |
3787 | location in the .plt. This is required to make function | |
3788 | pointers compare as equal between the normal executable and | |
3789 | the shared library. */ | |
3790 | if (!bfd_link_pic (info) && !h->def_regular) | |
3791 | { | |
3792 | h->root.u.def.section = s; | |
3793 | h->root.u.def.value = h->plt.offset; | |
3794 | } | |
3795 | ||
3796 | /* Make room for this entry. For now we only create the | |
3797 | small model PLT entries. We later need to find a way | |
3798 | of relaxing into these from the large model PLT entries. */ | |
3799 | s->size += PLT_SMALL_ENTRY_SIZE; | |
3800 | ||
3801 | /* We also need to make an entry in the .got.plt section, which | |
3802 | will be placed in the .got section by the linker script. */ | |
3803 | htab->root.sgotplt->size += GOT_ENTRY_SIZE; | |
3804 | ||
3805 | /* We also need to make an entry in the .rela.plt section. */ | |
3806 | htab->root.srelplt->size += RELOC_SIZE (htab); | |
3807 | ||
3808 | /* We need to ensure that all GOT entries that serve the PLT | |
3809 | are consecutive with the special GOT slots [0] [1] and | |
3810 | [2]. Any addtional relocations must be placed after the | |
3811 | PLT related entries. We abuse the reloc_count such that | |
3812 | during sizing we adjust reloc_count to indicate the | |
3813 | number of PLT related reserved entries. In subsequent | |
3814 | phases when filling in the contents of the reloc entries, | |
3815 | PLT related entries are placed by computing their PLT | |
3816 | index (0 .. reloc_count). While other none PLT relocs are | |
3817 | placed at the slot indicated by reloc_count and | |
3818 | reloc_count is updated. */ | |
3819 | ||
3820 | htab->root.srelplt->reloc_count++; | |
3821 | } | |
3822 | else | |
3823 | { | |
3824 | h->plt.offset = (bfd_vma) - 1; | |
3825 | h->needs_plt = 0; | |
3826 | } | |
3827 | } | |
3828 | else | |
3829 | { | |
3830 | h->plt.offset = (bfd_vma) - 1; | |
3831 | h->needs_plt = 0; | |
3832 | } | |
3833 | ||
3834 | if (h->got.refcount > 0) | |
3835 | { | |
3836 | bool dyn; | |
3837 | unsigned got_type = elf_kvx_hash_entry (h)->got_type; | |
3838 | ||
3839 | h->got.offset = (bfd_vma) - 1; | |
3840 | ||
3841 | dyn = htab->root.dynamic_sections_created; | |
3842 | ||
3843 | /* Make sure this symbol is output as a dynamic symbol. | |
d530ba0a | 3844 | Undefined weak syms won't yet be marked as dynamic. */ |
6e712424 PI |
3845 | if (dyn && h->dynindx == -1 && !h->forced_local) |
3846 | { | |
3847 | if (!bfd_elf_link_record_dynamic_symbol (info, h)) | |
3848 | return false; | |
3849 | } | |
3850 | ||
3851 | if (got_type == GOT_UNKNOWN) | |
3852 | { | |
3853 | (*_bfd_error_handler) | |
3854 | (_("relocation against `%s' has faulty GOT type "), | |
3855 | (h) ? h->root.root.string : "a local symbol"); | |
3856 | bfd_set_error (bfd_error_bad_value); | |
3857 | return false; | |
3858 | } | |
3859 | else if (got_type == GOT_NORMAL) | |
3860 | { | |
3861 | h->got.offset = htab->root.sgot->size; | |
3862 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
3863 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3864 | || h->root.type != bfd_link_hash_undefweak) | |
3865 | && (bfd_link_pic (info) | |
3866 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
3867 | { | |
3868 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
3869 | } | |
3870 | } | |
3871 | else | |
3872 | { | |
3873 | int indx; | |
3874 | ||
3875 | /* Any of these will require 2 GOT slots because | |
3876 | * they use __tls_get_addr() */ | |
3877 | if (got_type & (GOT_TLS_GD | GOT_TLS_LD)) | |
3878 | { | |
3879 | h->got.offset = htab->root.sgot->size; | |
3880 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
3881 | } | |
3882 | ||
3883 | if (got_type & GOT_TLS_IE) | |
3884 | { | |
3885 | h->got.offset = htab->root.sgot->size; | |
3886 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
3887 | } | |
3888 | ||
3889 | indx = h && h->dynindx != -1 ? h->dynindx : 0; | |
3890 | if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT | |
3891 | || h->root.type != bfd_link_hash_undefweak) | |
3892 | && (bfd_link_pic (info) | |
3893 | || indx != 0 | |
3894 | || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h))) | |
3895 | { | |
3896 | /* Only the GD case requires 2 relocations. */ | |
3897 | if (got_type & GOT_TLS_GD) | |
d530ba0a | 3898 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; |
6e712424 PI |
3899 | |
3900 | /* LD needs a DTPMOD reloc, IE needs a DTPOFF. */ | |
3901 | if (got_type & (GOT_TLS_LD | GOT_TLS_IE)) | |
d530ba0a | 3902 | htab->root.srelgot->size += RELOC_SIZE (htab); |
6e712424 PI |
3903 | } |
3904 | } | |
3905 | } | |
3906 | else | |
3907 | { | |
3908 | h->got.offset = (bfd_vma) - 1; | |
3909 | } | |
3910 | ||
3911 | if (h->dyn_relocs == NULL) | |
3912 | return true; | |
3913 | ||
3914 | /* In the shared -Bsymbolic case, discard space allocated for | |
3915 | dynamic pc-relative relocs against symbols which turn out to be | |
3916 | defined in regular objects. For the normal shared case, discard | |
3917 | space for pc-relative relocs that have become local due to symbol | |
3918 | visibility changes. */ | |
3919 | ||
3920 | if (bfd_link_pic (info)) | |
3921 | { | |
3922 | /* Relocs that use pc_count are those that appear on a call | |
d530ba0a AM |
3923 | insn, or certain REL relocs that can generated via assembly. |
3924 | We want calls to protected symbols to resolve directly to the | |
3925 | function rather than going via the plt. If people want | |
3926 | function pointer comparisons to work as expected then they | |
3927 | should avoid writing weird assembly. */ | |
6e712424 PI |
3928 | if (SYMBOL_CALLS_LOCAL (info, h)) |
3929 | { | |
3930 | struct elf_dyn_relocs **pp; | |
3931 | ||
d530ba0a | 3932 | for (pp = &h->dyn_relocs; (p = *pp) != NULL;) |
6e712424 PI |
3933 | { |
3934 | p->count -= p->pc_count; | |
3935 | p->pc_count = 0; | |
3936 | if (p->count == 0) | |
3937 | *pp = p->next; | |
3938 | else | |
3939 | pp = &p->next; | |
3940 | } | |
3941 | } | |
3942 | ||
3943 | /* Also discard relocs on undefined weak syms with non-default | |
d530ba0a | 3944 | visibility. */ |
6e712424 PI |
3945 | if (h->dyn_relocs != NULL && h->root.type == bfd_link_hash_undefweak) |
3946 | { | |
3947 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT | |
3948 | || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)) | |
3949 | h->dyn_relocs = NULL; | |
3950 | ||
3951 | /* Make sure undefined weak symbols are output as a dynamic | |
3952 | symbol in PIEs. */ | |
3953 | else if (h->dynindx == -1 | |
3954 | && !h->forced_local | |
3955 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
3956 | return false; | |
3957 | } | |
3958 | ||
3959 | } | |
3960 | else if (ELIMINATE_COPY_RELOCS) | |
3961 | { | |
3962 | /* For the non-shared case, discard space for relocs against | |
d530ba0a AM |
3963 | symbols which turn out to need copy relocs or are not |
3964 | dynamic. */ | |
6e712424 PI |
3965 | |
3966 | if (!h->non_got_ref | |
3967 | && ((h->def_dynamic | |
3968 | && !h->def_regular) | |
3969 | || (htab->root.dynamic_sections_created | |
3970 | && (h->root.type == bfd_link_hash_undefweak | |
3971 | || h->root.type == bfd_link_hash_undefined)))) | |
3972 | { | |
3973 | /* Make sure this symbol is output as a dynamic symbol. | |
3974 | Undefined weak syms won't yet be marked as dynamic. */ | |
3975 | if (h->dynindx == -1 | |
3976 | && !h->forced_local | |
3977 | && !bfd_elf_link_record_dynamic_symbol (info, h)) | |
3978 | return false; | |
3979 | ||
3980 | /* If that succeeded, we know we'll be keeping all the | |
3981 | relocs. */ | |
3982 | if (h->dynindx != -1) | |
3983 | goto keep; | |
3984 | } | |
3985 | ||
3986 | h->dyn_relocs = NULL; | |
3987 | ||
3988 | keep:; | |
3989 | } | |
3990 | ||
3991 | /* Finally, allocate space. */ | |
3992 | for (p = h->dyn_relocs; p != NULL; p = p->next) | |
3993 | { | |
3994 | asection *sreloc; | |
3995 | ||
3996 | sreloc = elf_section_data (p->sec)->sreloc; | |
3997 | ||
3998 | BFD_ASSERT (sreloc != NULL); | |
3999 | ||
4000 | sreloc->size += p->count * RELOC_SIZE (htab); | |
4001 | } | |
4002 | ||
4003 | return true; | |
4004 | } | |
4005 | ||
4006 | /* Find any dynamic relocs that apply to read-only sections. */ | |
4007 | ||
4008 | static bool | |
4009 | kvx_readonly_dynrelocs (struct elf_link_hash_entry * h, void * inf) | |
4010 | { | |
4011 | struct elf_dyn_relocs * p; | |
4012 | ||
4013 | for (p = h->dyn_relocs; p != NULL; p = p->next) | |
4014 | { | |
4015 | asection *s = p->sec; | |
4016 | ||
4017 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
4018 | { | |
4019 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
4020 | ||
4021 | info->flags |= DF_TEXTREL; | |
4022 | info->callbacks->minfo (_("%pB: dynamic relocation against `%pT' in " | |
4023 | "read-only section `%pA'\n"), | |
4024 | s->owner, h->root.root.string, s); | |
4025 | ||
4026 | /* Not an error, just cut short the traversal. */ | |
4027 | return false; | |
4028 | } | |
4029 | } | |
4030 | return true; | |
4031 | } | |
4032 | ||
4033 | /* This is the most important function of all . Innocuosly named | |
4034 | though ! */ | |
4035 | static bool | |
4036 | elfNN_kvx_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, | |
d530ba0a | 4037 | struct bfd_link_info *info) |
6e712424 PI |
4038 | { |
4039 | struct elf_kvx_link_hash_table *htab; | |
4040 | bfd *dynobj; | |
4041 | asection *s; | |
4042 | bool relocs; | |
4043 | bfd *ibfd; | |
4044 | ||
4045 | htab = elf_kvx_hash_table ((info)); | |
4046 | dynobj = htab->root.dynobj; | |
4047 | ||
4048 | BFD_ASSERT (dynobj != NULL); | |
4049 | ||
4050 | if (htab->root.dynamic_sections_created) | |
4051 | { | |
4052 | if (bfd_link_executable (info) && !info->nointerp) | |
4053 | { | |
4054 | s = bfd_get_linker_section (dynobj, ".interp"); | |
4055 | if (s == NULL) | |
4056 | abort (); | |
4057 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
4058 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
4059 | } | |
4060 | } | |
4061 | ||
4062 | /* Set up .got offsets for local syms, and space for local dynamic | |
4063 | relocs. */ | |
4064 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) | |
4065 | { | |
4066 | struct elf_kvx_local_symbol *locals = NULL; | |
4067 | Elf_Internal_Shdr *symtab_hdr; | |
4068 | asection *srel; | |
4069 | unsigned int i; | |
4070 | ||
4071 | if (!is_kvx_elf (ibfd)) | |
4072 | continue; | |
4073 | ||
4074 | for (s = ibfd->sections; s != NULL; s = s->next) | |
4075 | { | |
4076 | struct elf_dyn_relocs *p; | |
4077 | ||
4078 | for (p = (struct elf_dyn_relocs *) | |
d530ba0a | 4079 | (elf_section_data (s)->local_dynrel); p != NULL; p = p->next) |
6e712424 PI |
4080 | { |
4081 | if (!bfd_is_abs_section (p->sec) | |
4082 | && bfd_is_abs_section (p->sec->output_section)) | |
4083 | { | |
4084 | /* Input section has been discarded, either because | |
4085 | it is a copy of a linkonce section or due to | |
4086 | linker script /DISCARD/, so we'll be discarding | |
4087 | the relocs too. */ | |
4088 | } | |
4089 | else if (p->count != 0) | |
4090 | { | |
4091 | srel = elf_section_data (p->sec)->sreloc; | |
4092 | srel->size += p->count * RELOC_SIZE (htab); | |
4093 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
4094 | info->flags |= DF_TEXTREL; | |
4095 | } | |
4096 | } | |
4097 | } | |
4098 | ||
4099 | locals = elf_kvx_locals (ibfd); | |
4100 | if (!locals) | |
4101 | continue; | |
4102 | ||
4103 | symtab_hdr = &elf_symtab_hdr (ibfd); | |
4104 | srel = htab->root.srelgot; | |
4105 | for (i = 0; i < symtab_hdr->sh_info; i++) | |
4106 | { | |
4107 | locals[i].got_offset = (bfd_vma) - 1; | |
4108 | if (locals[i].got_refcount > 0) | |
4109 | { | |
4110 | unsigned got_type = locals[i].got_type; | |
4111 | if (got_type & (GOT_TLS_GD | GOT_TLS_LD)) | |
d530ba0a AM |
4112 | { |
4113 | locals[i].got_offset = htab->root.sgot->size; | |
4114 | htab->root.sgot->size += GOT_ENTRY_SIZE * 2; | |
4115 | } | |
6e712424 PI |
4116 | |
4117 | if (got_type & (GOT_NORMAL | GOT_TLS_IE )) | |
4118 | { | |
4119 | locals[i].got_offset = htab->root.sgot->size; | |
4120 | htab->root.sgot->size += GOT_ENTRY_SIZE; | |
4121 | } | |
4122 | ||
4123 | if (got_type == GOT_UNKNOWN) | |
4124 | { | |
4125 | } | |
4126 | ||
4127 | if (bfd_link_pic (info)) | |
4128 | { | |
4129 | if (got_type & GOT_TLS_GD) | |
4130 | htab->root.srelgot->size += RELOC_SIZE (htab) * 2; | |
4131 | ||
4132 | if (got_type & GOT_TLS_IE | |
4133 | || got_type & GOT_TLS_LD | |
4134 | || got_type & GOT_NORMAL) | |
4135 | htab->root.srelgot->size += RELOC_SIZE (htab); | |
4136 | } | |
4137 | } | |
4138 | else | |
4139 | { | |
4140 | locals[i].got_refcount = (bfd_vma) - 1; | |
4141 | } | |
4142 | } | |
4143 | } | |
4144 | ||
4145 | ||
4146 | /* Allocate global sym .plt and .got entries, and space for global | |
4147 | sym dynamic relocs. */ | |
4148 | elf_link_hash_traverse (&htab->root, elfNN_kvx_allocate_dynrelocs, | |
4149 | info); | |
4150 | ||
4151 | /* For every jump slot reserved in the sgotplt, reloc_count is | |
4152 | incremented. However, when we reserve space for TLS descriptors, | |
4153 | it's not incremented, so in order to compute the space reserved | |
4154 | for them, it suffices to multiply the reloc count by the jump | |
4155 | slot size. */ | |
4156 | ||
4157 | if (htab->root.srelplt) | |
4158 | htab->sgotplt_jump_table_size = kvx_compute_jump_table_size (htab); | |
4159 | ||
4160 | /* We now have determined the sizes of the various dynamic sections. | |
4161 | Allocate memory for them. */ | |
4162 | relocs = false; | |
4163 | for (s = dynobj->sections; s != NULL; s = s->next) | |
4164 | { | |
4165 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
4166 | continue; | |
4167 | ||
4168 | if (s == htab->root.splt | |
4169 | || s == htab->root.sgot | |
4170 | || s == htab->root.sgotplt | |
4171 | || s == htab->root.iplt | |
4172 | || s == htab->root.igotplt || s == htab->sdynbss) | |
4173 | { | |
4174 | /* Strip this section if we don't need it; see the | |
4175 | comment below. */ | |
4176 | } | |
4177 | else if (startswith (bfd_section_name (s), ".rela")) | |
4178 | { | |
4179 | if (s->size != 0 && s != htab->root.srelplt) | |
4180 | relocs = true; | |
4181 | ||
4182 | /* We use the reloc_count field as a counter if we need | |
4183 | to copy relocs into the output file. */ | |
4184 | if (s != htab->root.srelplt) | |
4185 | s->reloc_count = 0; | |
4186 | } | |
4187 | else | |
4188 | { | |
4189 | /* It's not one of our sections, so don't allocate space. */ | |
4190 | continue; | |
4191 | } | |
4192 | ||
4193 | if (s->size == 0) | |
4194 | { | |
4195 | /* If we don't need this section, strip it from the | |
4196 | output file. This is mostly to handle .rela.bss and | |
4197 | .rela.plt. We must create both sections in | |
4198 | create_dynamic_sections, because they must be created | |
4199 | before the linker maps input sections to output | |
4200 | sections. The linker does that before | |
4201 | adjust_dynamic_symbol is called, and it is that | |
4202 | function which decides whether anything needs to go | |
4203 | into these sections. */ | |
4204 | ||
4205 | s->flags |= SEC_EXCLUDE; | |
4206 | continue; | |
4207 | } | |
4208 | ||
4209 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
4210 | continue; | |
4211 | ||
4212 | /* Allocate memory for the section contents. We use bfd_zalloc | |
d530ba0a AM |
4213 | here in case unused entries are not reclaimed before the |
4214 | section's contents are written out. This should not happen, | |
4215 | but this way if it does, we get a R_KVX_NONE reloc instead | |
4216 | of garbage. */ | |
6e712424 PI |
4217 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); |
4218 | if (s->contents == NULL) | |
4219 | return false; | |
4220 | } | |
4221 | ||
4222 | if (htab->root.dynamic_sections_created) | |
4223 | { | |
4224 | /* Add some entries to the .dynamic section. We fill in the | |
d530ba0a AM |
4225 | values later, in elfNN_kvx_finish_dynamic_sections, but we |
4226 | must add the entries now so that we get the correct size for | |
4227 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
4228 | dynamic linker and used by the debugger. */ | |
6e712424 PI |
4229 | #define add_dynamic_entry(TAG, VAL) \ |
4230 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
4231 | ||
4232 | if (bfd_link_executable (info)) | |
4233 | { | |
4234 | if (!add_dynamic_entry (DT_DEBUG, 0)) | |
4235 | return false; | |
4236 | } | |
4237 | ||
4238 | if (htab->root.splt->size != 0) | |
4239 | { | |
4240 | if (!add_dynamic_entry (DT_PLTGOT, 0) | |
4241 | || !add_dynamic_entry (DT_PLTRELSZ, 0) | |
4242 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) | |
4243 | || !add_dynamic_entry (DT_JMPREL, 0)) | |
4244 | return false; | |
4245 | } | |
4246 | ||
4247 | if (relocs) | |
4248 | { | |
4249 | if (!add_dynamic_entry (DT_RELA, 0) | |
4250 | || !add_dynamic_entry (DT_RELASZ, 0) | |
4251 | || !add_dynamic_entry (DT_RELAENT, RELOC_SIZE (htab))) | |
4252 | return false; | |
4253 | ||
4254 | /* If any dynamic relocs apply to a read-only section, | |
4255 | then we need a DT_TEXTREL entry. */ | |
4256 | if ((info->flags & DF_TEXTREL) == 0) | |
4257 | elf_link_hash_traverse (&htab->root, kvx_readonly_dynrelocs, | |
4258 | info); | |
4259 | ||
4260 | if ((info->flags & DF_TEXTREL) != 0) | |
4261 | { | |
4262 | if (!add_dynamic_entry (DT_TEXTREL, 0)) | |
4263 | return false; | |
4264 | } | |
4265 | } | |
4266 | } | |
4267 | #undef add_dynamic_entry | |
4268 | ||
4269 | return true; | |
4270 | } | |
4271 | ||
4272 | static inline void | |
4273 | elf_kvx_update_plt_entry (bfd *output_bfd, | |
d530ba0a AM |
4274 | bfd_reloc_code_real_type r_type, |
4275 | bfd_byte *plt_entry, bfd_vma value) | |
6e712424 PI |
4276 | { |
4277 | reloc_howto_type *howto = elfNN_kvx_howto_from_bfd_reloc (r_type); | |
4278 | BFD_ASSERT(howto != NULL); | |
4279 | _bfd_kvx_elf_put_addend (output_bfd, plt_entry, r_type, howto, value); | |
4280 | } | |
4281 | ||
4282 | static void | |
4283 | elfNN_kvx_create_small_pltn_entry (struct elf_link_hash_entry *h, | |
d530ba0a AM |
4284 | struct elf_kvx_link_hash_table *htab, |
4285 | bfd *output_bfd) | |
6e712424 PI |
4286 | { |
4287 | bfd_byte *plt_entry; | |
4288 | bfd_vma plt_index; | |
4289 | bfd_vma got_offset; | |
4290 | bfd_vma gotplt_entry_address; | |
4291 | bfd_vma plt_entry_address; | |
4292 | Elf_Internal_Rela rela; | |
4293 | bfd_byte *loc; | |
4294 | asection *plt, *gotplt, *relplt; | |
4295 | ||
4296 | plt = htab->root.splt; | |
4297 | gotplt = htab->root.sgotplt; | |
4298 | relplt = htab->root.srelplt; | |
4299 | ||
4300 | /* Get the index in the procedure linkage table which | |
4301 | corresponds to this symbol. This is the index of this symbol | |
4302 | in all the symbols for which we are making plt entries. The | |
4303 | first entry in the procedure linkage table is reserved. | |
4304 | ||
4305 | Get the offset into the .got table of the entry that | |
4306 | corresponds to this function. Each .got entry is GOT_ENTRY_SIZE | |
4307 | bytes. The first three are reserved for the dynamic linker. | |
4308 | ||
4309 | For static executables, we don't reserve anything. */ | |
4310 | ||
4311 | if (plt == htab->root.splt) | |
4312 | { | |
4313 | plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size; | |
4314 | got_offset = (plt_index + 3) * GOT_ENTRY_SIZE; | |
4315 | } | |
4316 | else | |
4317 | { | |
4318 | plt_index = h->plt.offset / htab->plt_entry_size; | |
4319 | got_offset = plt_index * GOT_ENTRY_SIZE; | |
4320 | } | |
4321 | ||
4322 | plt_entry = plt->contents + h->plt.offset; | |
4323 | plt_entry_address = plt->output_section->vma | |
4324 | + plt->output_offset + h->plt.offset; | |
4325 | gotplt_entry_address = gotplt->output_section->vma + | |
4326 | gotplt->output_offset + got_offset; | |
4327 | ||
4328 | /* Copy in the boiler-plate for the PLTn entry. */ | |
4329 | memcpy (plt_entry, elfNN_kvx_small_plt_entry, PLT_SMALL_ENTRY_SIZE); | |
4330 | ||
4331 | /* Patch the loading of the GOT entry, relative to the PLT entry | |
d530ba0a | 4332 | address. */ |
6e712424 | 4333 | |
d530ba0a AM |
4334 | /* Use 37bits offset for both 32 and 64bits mode. |
4335 | Fill the LO10 of of lw $r9 = 0[$r14]. */ | |
6e712424 | 4336 | elf_kvx_update_plt_entry(output_bfd, BFD_RELOC_KVX_S37_LO10, |
d530ba0a AM |
4337 | plt_entry+4, |
4338 | gotplt_entry_address - plt_entry_address); | |
6e712424 | 4339 | |
d530ba0a | 4340 | /* Fill the UP27 of of lw $r9 = 0[$r14]. */ |
6e712424 | 4341 | elf_kvx_update_plt_entry(output_bfd, BFD_RELOC_KVX_S37_UP27, |
d530ba0a AM |
4342 | plt_entry+8, |
4343 | gotplt_entry_address - plt_entry_address); | |
6e712424 PI |
4344 | |
4345 | rela.r_offset = gotplt_entry_address; | |
4346 | ||
4347 | /* Fill in the entry in the .rela.plt section. */ | |
4348 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_KVX_JMP_SLOT); | |
4349 | rela.r_addend = 0; | |
4350 | ||
4351 | /* Compute the relocation entry to used based on PLT index and do | |
4352 | not adjust reloc_count. The reloc_count has already been adjusted | |
4353 | to account for this entry. */ | |
4354 | loc = relplt->contents + plt_index * RELOC_SIZE (htab); | |
4355 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); | |
4356 | } | |
4357 | ||
4358 | /* Size sections even though they're not dynamic. We use it to setup | |
4359 | _TLS_MODULE_BASE_, if needed. */ | |
4360 | ||
4361 | static bool | |
4362 | elfNN_kvx_always_size_sections (bfd *output_bfd, | |
d530ba0a | 4363 | struct bfd_link_info *info) |
6e712424 PI |
4364 | { |
4365 | asection *tls_sec; | |
4366 | ||
4367 | if (bfd_link_relocatable (info)) | |
4368 | return true; | |
4369 | ||
4370 | tls_sec = elf_hash_table (info)->tls_sec; | |
4371 | ||
4372 | if (tls_sec) | |
4373 | { | |
4374 | struct elf_link_hash_entry *tlsbase; | |
4375 | ||
4376 | tlsbase = elf_link_hash_lookup (elf_hash_table (info), | |
4377 | "_TLS_MODULE_BASE_", true, true, false); | |
4378 | ||
4379 | if (tlsbase) | |
4380 | { | |
4381 | struct bfd_link_hash_entry *h = NULL; | |
4382 | const struct elf_backend_data *bed = | |
4383 | get_elf_backend_data (output_bfd); | |
4384 | ||
4385 | if (!(_bfd_generic_link_add_one_symbol | |
4386 | (info, output_bfd, "_TLS_MODULE_BASE_", BSF_LOCAL, | |
4387 | tls_sec, 0, NULL, false, bed->collect, &h))) | |
4388 | return false; | |
4389 | ||
4390 | tlsbase->type = STT_TLS; | |
4391 | tlsbase = (struct elf_link_hash_entry *) h; | |
4392 | tlsbase->def_regular = 1; | |
4393 | tlsbase->other = STV_HIDDEN; | |
4394 | (*bed->elf_backend_hide_symbol) (info, tlsbase, true); | |
4395 | } | |
4396 | } | |
4397 | ||
4398 | return true; | |
4399 | } | |
4400 | ||
4401 | /* Finish up dynamic symbol handling. We set the contents of various | |
4402 | dynamic sections here. */ | |
4403 | static bool | |
4404 | elfNN_kvx_finish_dynamic_symbol (bfd *output_bfd, | |
d530ba0a AM |
4405 | struct bfd_link_info *info, |
4406 | struct elf_link_hash_entry *h, | |
4407 | Elf_Internal_Sym *sym) | |
6e712424 PI |
4408 | { |
4409 | struct elf_kvx_link_hash_table *htab; | |
4410 | htab = elf_kvx_hash_table (info); | |
4411 | ||
4412 | if (h->plt.offset != (bfd_vma) - 1) | |
4413 | { | |
4414 | asection *plt = NULL, *gotplt = NULL, *relplt = NULL; | |
4415 | ||
4416 | /* This symbol has an entry in the procedure linkage table. Set | |
d530ba0a | 4417 | it up. */ |
6e712424 PI |
4418 | |
4419 | if (htab->root.splt != NULL) | |
4420 | { | |
4421 | plt = htab->root.splt; | |
4422 | gotplt = htab->root.sgotplt; | |
4423 | relplt = htab->root.srelplt; | |
4424 | } | |
4425 | ||
4426 | /* This symbol has an entry in the procedure linkage table. Set | |
4427 | it up. */ | |
4428 | if ((h->dynindx == -1 | |
4429 | && !((h->forced_local || bfd_link_executable (info)) | |
4430 | && h->def_regular | |
4431 | && h->type == STT_GNU_IFUNC)) | |
4432 | || plt == NULL | |
4433 | || gotplt == NULL | |
4434 | || relplt == NULL) | |
4435 | abort (); | |
4436 | ||
4437 | elfNN_kvx_create_small_pltn_entry (h, htab, output_bfd); | |
4438 | if (!h->def_regular) | |
4439 | { | |
4440 | /* Mark the symbol as undefined, rather than as defined in | |
4441 | the .plt section. */ | |
4442 | sym->st_shndx = SHN_UNDEF; | |
4443 | /* If the symbol is weak we need to clear the value. | |
4444 | Otherwise, the PLT entry would provide a definition for | |
4445 | the symbol even if the symbol wasn't defined anywhere, | |
4446 | and so the symbol would never be NULL. Leave the value if | |
4447 | there were any relocations where pointer equality matters | |
4448 | (this is a clue for the dynamic linker, to make function | |
4449 | pointer comparisons work between an application and shared | |
4450 | library). */ | |
4451 | if (!h->ref_regular_nonweak || !h->pointer_equality_needed) | |
4452 | sym->st_value = 0; | |
4453 | } | |
4454 | } | |
4455 | ||
4456 | if (h->got.offset != (bfd_vma) - 1 | |
4457 | && elf_kvx_hash_entry (h)->got_type == GOT_NORMAL) | |
4458 | { | |
4459 | Elf_Internal_Rela rela; | |
4460 | bfd_byte *loc; | |
4461 | ||
4462 | /* This symbol has an entry in the global offset table. Set it | |
d530ba0a | 4463 | up. */ |
6e712424 PI |
4464 | if (htab->root.sgot == NULL || htab->root.srelgot == NULL) |
4465 | abort (); | |
4466 | ||
4467 | rela.r_offset = (htab->root.sgot->output_section->vma | |
4468 | + htab->root.sgot->output_offset | |
4469 | + (h->got.offset & ~(bfd_vma) 1)); | |
4470 | ||
4471 | #ifdef UGLY_DEBUG | |
4472 | printf("setting rela at offset 0x%x(0x%x + 0x%x + 0x%x) for %s\n", | |
4473 | rela.r_offset, | |
4474 | htab->root.sgot->output_section->vma, | |
4475 | htab->root.sgot->output_offset, | |
4476 | h->got.offset, | |
4477 | h->root.root.string); | |
4478 | #endif | |
4479 | ||
d530ba0a | 4480 | if (bfd_link_pic (info) && SYMBOL_REFERENCES_LOCAL (info, h)) |
6e712424 PI |
4481 | { |
4482 | if (!h->def_regular) | |
4483 | return false; | |
4484 | ||
4485 | /* in case of PLT related GOT entry, it is not clear who is | |
4486 | supposed to set the LSB of GOT entry... | |
4487 | kvx_calculate_got_entry_vma() would be a good candidate, | |
4488 | but it is not called currently | |
d530ba0a | 4489 | So we are commenting it ATM. */ |
6e712424 PI |
4490 | // BFD_ASSERT ((h->got.offset & 1) != 0); |
4491 | rela.r_info = ELFNN_R_INFO (0, R_KVX_RELATIVE); | |
4492 | rela.r_addend = (h->root.u.def.value | |
4493 | + h->root.u.def.section->output_section->vma | |
4494 | + h->root.u.def.section->output_offset); | |
4495 | } | |
4496 | else | |
4497 | { | |
4498 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
4499 | bfd_put_NN (output_bfd, (bfd_vma) 0, | |
4500 | htab->root.sgot->contents + h->got.offset); | |
4501 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_KVX_GLOB_DAT); | |
4502 | rela.r_addend = 0; | |
4503 | } | |
4504 | ||
4505 | loc = htab->root.srelgot->contents; | |
4506 | loc += htab->root.srelgot->reloc_count++ * RELOC_SIZE (htab); | |
4507 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); | |
4508 | } | |
4509 | ||
4510 | if (h->needs_copy) | |
4511 | { | |
4512 | Elf_Internal_Rela rela; | |
4513 | bfd_byte *loc; | |
4514 | ||
4515 | /* This symbol needs a copy reloc. Set it up. */ | |
4516 | ||
4517 | if (h->dynindx == -1 | |
4518 | || (h->root.type != bfd_link_hash_defined | |
4519 | && h->root.type != bfd_link_hash_defweak) | |
4520 | || htab->srelbss == NULL) | |
4521 | abort (); | |
4522 | ||
4523 | rela.r_offset = (h->root.u.def.value | |
4524 | + h->root.u.def.section->output_section->vma | |
4525 | + h->root.u.def.section->output_offset); | |
4526 | rela.r_info = ELFNN_R_INFO (h->dynindx, R_KVX_COPY); | |
4527 | rela.r_addend = 0; | |
4528 | loc = htab->srelbss->contents; | |
4529 | loc += htab->srelbss->reloc_count++ * RELOC_SIZE (htab); | |
4530 | bfd_elfNN_swap_reloca_out (output_bfd, &rela, loc); | |
4531 | } | |
4532 | ||
4533 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. SYM may | |
4534 | be NULL for local symbols. */ | |
4535 | if (sym != NULL | |
4536 | && (h == elf_hash_table (info)->hdynamic | |
4537 | || h == elf_hash_table (info)->hgot)) | |
4538 | sym->st_shndx = SHN_ABS; | |
4539 | ||
4540 | return true; | |
4541 | } | |
4542 | ||
4543 | static void | |
4544 | elfNN_kvx_init_small_plt0_entry (bfd *output_bfd ATTRIBUTE_UNUSED, | |
d530ba0a | 4545 | struct elf_kvx_link_hash_table *htab) |
6e712424 PI |
4546 | { |
4547 | memcpy (htab->root.splt->contents, elfNN_kvx_small_plt0_entry, | |
4548 | PLT_ENTRY_SIZE); | |
4549 | elf_section_data (htab->root.splt->output_section)->this_hdr.sh_entsize = | |
4550 | PLT_ENTRY_SIZE; | |
4551 | } | |
4552 | ||
4553 | static bool | |
4554 | elfNN_kvx_finish_dynamic_sections (bfd *output_bfd, | |
d530ba0a | 4555 | struct bfd_link_info *info) |
6e712424 PI |
4556 | { |
4557 | struct elf_kvx_link_hash_table *htab; | |
4558 | bfd *dynobj; | |
4559 | asection *sdyn; | |
4560 | ||
4561 | htab = elf_kvx_hash_table (info); | |
4562 | dynobj = htab->root.dynobj; | |
4563 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); | |
4564 | ||
4565 | if (htab->root.dynamic_sections_created) | |
4566 | { | |
4567 | ElfNN_External_Dyn *dyncon, *dynconend; | |
4568 | ||
4569 | if (sdyn == NULL || htab->root.sgot == NULL) | |
4570 | abort (); | |
4571 | ||
4572 | dyncon = (ElfNN_External_Dyn *) sdyn->contents; | |
4573 | dynconend = (ElfNN_External_Dyn *) (sdyn->contents + sdyn->size); | |
4574 | for (; dyncon < dynconend; dyncon++) | |
4575 | { | |
4576 | Elf_Internal_Dyn dyn; | |
4577 | asection *s; | |
4578 | ||
4579 | bfd_elfNN_swap_dyn_in (dynobj, dyncon, &dyn); | |
4580 | ||
4581 | switch (dyn.d_tag) | |
4582 | { | |
4583 | default: | |
4584 | continue; | |
4585 | ||
4586 | case DT_PLTGOT: | |
4587 | s = htab->root.sgotplt; | |
4588 | dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; | |
4589 | break; | |
4590 | ||
4591 | case DT_JMPREL: | |
4592 | dyn.d_un.d_ptr = htab->root.srelplt->output_section->vma; | |
4593 | break; | |
4594 | ||
4595 | case DT_PLTRELSZ: | |
4596 | s = htab->root.srelplt; | |
4597 | dyn.d_un.d_val = s->size; | |
4598 | break; | |
4599 | ||
4600 | case DT_RELASZ: | |
4601 | /* The procedure linkage table relocs (DT_JMPREL) should | |
4602 | not be included in the overall relocs (DT_RELA). | |
4603 | Therefore, we override the DT_RELASZ entry here to | |
4604 | make it not include the JMPREL relocs. Since the | |
4605 | linker script arranges for .rela.plt to follow all | |
4606 | other relocation sections, we don't have to worry | |
4607 | about changing the DT_RELA entry. */ | |
4608 | if (htab->root.srelplt != NULL) | |
4609 | { | |
4610 | s = htab->root.srelplt; | |
4611 | dyn.d_un.d_val -= s->size; | |
4612 | } | |
4613 | break; | |
4614 | } | |
4615 | ||
4616 | bfd_elfNN_swap_dyn_out (output_bfd, &dyn, dyncon); | |
4617 | } | |
4618 | ||
4619 | } | |
4620 | ||
4621 | /* Fill in the special first entry in the procedure linkage table. */ | |
4622 | if (htab->root.splt && htab->root.splt->size > 0) | |
4623 | { | |
4624 | elfNN_kvx_init_small_plt0_entry (output_bfd, htab); | |
4625 | ||
4626 | elf_section_data (htab->root.splt->output_section)-> | |
4627 | this_hdr.sh_entsize = htab->plt_entry_size; | |
4628 | } | |
4629 | ||
4630 | if (htab->root.sgotplt) | |
4631 | { | |
4632 | if (bfd_is_abs_section (htab->root.sgotplt->output_section)) | |
4633 | { | |
4634 | (*_bfd_error_handler) | |
4635 | (_("discarded output section: `%pA'"), htab->root.sgotplt); | |
4636 | return false; | |
4637 | } | |
4638 | ||
4639 | /* Fill in the first three entries in the global offset table. */ | |
4640 | if (htab->root.sgotplt->size > 0) | |
4641 | { | |
4642 | bfd_put_NN (output_bfd, (bfd_vma) 0, htab->root.sgotplt->contents); | |
4643 | ||
4644 | /* Write GOT[1] and GOT[2], needed for the dynamic linker. */ | |
4645 | bfd_put_NN (output_bfd, | |
4646 | (bfd_vma) 0, | |
4647 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE); | |
4648 | bfd_put_NN (output_bfd, | |
4649 | (bfd_vma) 0, | |
4650 | htab->root.sgotplt->contents + GOT_ENTRY_SIZE * 2); | |
4651 | } | |
4652 | ||
4653 | if (htab->root.sgot) | |
4654 | { | |
4655 | if (htab->root.sgot->size > 0) | |
4656 | { | |
4657 | bfd_vma addr = | |
4658 | sdyn ? sdyn->output_section->vma + sdyn->output_offset : 0; | |
4659 | bfd_put_NN (output_bfd, addr, htab->root.sgot->contents); | |
4660 | } | |
4661 | } | |
4662 | ||
4663 | elf_section_data (htab->root.sgotplt->output_section)-> | |
4664 | this_hdr.sh_entsize = GOT_ENTRY_SIZE; | |
4665 | } | |
4666 | ||
4667 | if (htab->root.sgot && htab->root.sgot->size > 0) | |
4668 | elf_section_data (htab->root.sgot->output_section)->this_hdr.sh_entsize | |
4669 | = GOT_ENTRY_SIZE; | |
4670 | ||
4671 | return true; | |
4672 | } | |
4673 | ||
4674 | /* Return address for Ith PLT stub in section PLT, for relocation REL | |
4675 | or (bfd_vma) -1 if it should not be included. */ | |
4676 | ||
4677 | static bfd_vma | |
4678 | elfNN_kvx_plt_sym_val (bfd_vma i, const asection *plt, | |
d530ba0a | 4679 | const arelent *rel ATTRIBUTE_UNUSED) |
6e712424 PI |
4680 | { |
4681 | return plt->vma + PLT_ENTRY_SIZE + i * PLT_SMALL_ENTRY_SIZE; | |
4682 | } | |
4683 | ||
4684 | #define ELF_ARCH bfd_arch_kvx | |
4685 | #define ELF_MACHINE_CODE EM_KVX | |
4686 | #define ELF_MAXPAGESIZE 0x10000 | |
4687 | #define ELF_MINPAGESIZE 0x1000 | |
4688 | #define ELF_COMMONPAGESIZE 0x1000 | |
4689 | ||
4690 | #define bfd_elfNN_bfd_link_hash_table_create \ | |
4691 | elfNN_kvx_link_hash_table_create | |
4692 | ||
4693 | #define bfd_elfNN_bfd_merge_private_bfd_data \ | |
4694 | elfNN_kvx_merge_private_bfd_data | |
4695 | ||
4696 | #define bfd_elfNN_bfd_print_private_bfd_data \ | |
4697 | elfNN_kvx_print_private_bfd_data | |
4698 | ||
4699 | #define bfd_elfNN_bfd_reloc_type_lookup \ | |
4700 | elfNN_kvx_reloc_type_lookup | |
4701 | ||
4702 | #define bfd_elfNN_bfd_reloc_name_lookup \ | |
4703 | elfNN_kvx_reloc_name_lookup | |
4704 | ||
4705 | #define bfd_elfNN_bfd_set_private_flags \ | |
4706 | elfNN_kvx_set_private_flags | |
4707 | ||
4708 | #define bfd_elfNN_mkobject \ | |
4709 | elfNN_kvx_mkobject | |
4710 | ||
4711 | #define bfd_elfNN_new_section_hook \ | |
4712 | elfNN_kvx_new_section_hook | |
4713 | ||
4714 | #define elf_backend_adjust_dynamic_symbol \ | |
4715 | elfNN_kvx_adjust_dynamic_symbol | |
4716 | ||
4717 | #define elf_backend_always_size_sections \ | |
4718 | elfNN_kvx_always_size_sections | |
4719 | ||
4720 | #define elf_backend_check_relocs \ | |
4721 | elfNN_kvx_check_relocs | |
4722 | ||
4723 | #define elf_backend_copy_indirect_symbol \ | |
4724 | elfNN_kvx_copy_indirect_symbol | |
4725 | ||
4726 | /* Create .dynbss, and .rela.bss sections in DYNOBJ, and set up shortcuts | |
4727 | to them in our hash. */ | |
4728 | #define elf_backend_create_dynamic_sections \ | |
4729 | elfNN_kvx_create_dynamic_sections | |
4730 | ||
4731 | #define elf_backend_init_index_section \ | |
4732 | _bfd_elf_init_2_index_sections | |
4733 | ||
4734 | #define elf_backend_finish_dynamic_sections \ | |
4735 | elfNN_kvx_finish_dynamic_sections | |
4736 | ||
4737 | #define elf_backend_finish_dynamic_symbol \ | |
4738 | elfNN_kvx_finish_dynamic_symbol | |
4739 | ||
4740 | #define elf_backend_object_p \ | |
4741 | elfNN_kvx_object_p | |
4742 | ||
4743 | #define elf_backend_output_arch_local_syms \ | |
4744 | elfNN_kvx_output_arch_local_syms | |
4745 | ||
4746 | #define elf_backend_plt_sym_val \ | |
4747 | elfNN_kvx_plt_sym_val | |
4748 | ||
4749 | #define elf_backend_init_file_header \ | |
4750 | elfNN_kvx_init_file_header | |
4751 | ||
4752 | #define elf_backend_init_process_headers \ | |
4753 | elfNN_kvx_init_process_headers | |
4754 | ||
4755 | #define elf_backend_relocate_section \ | |
4756 | elfNN_kvx_relocate_section | |
4757 | ||
4758 | #define elf_backend_reloc_type_class \ | |
4759 | elfNN_kvx_reloc_type_class | |
4760 | ||
4761 | #define elf_backend_size_dynamic_sections \ | |
4762 | elfNN_kvx_size_dynamic_sections | |
4763 | ||
4764 | #define elf_backend_can_refcount 1 | |
4765 | #define elf_backend_can_gc_sections 1 | |
4766 | #define elf_backend_plt_readonly 1 | |
4767 | #define elf_backend_want_got_plt 1 | |
4768 | #define elf_backend_want_plt_sym 0 | |
4769 | #define elf_backend_may_use_rel_p 0 | |
4770 | #define elf_backend_may_use_rela_p 1 | |
4771 | #define elf_backend_default_use_rela_p 1 | |
4772 | #define elf_backend_rela_normal 1 | |
4773 | #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) | |
4774 | #define elf_backend_default_execstack 0 | |
4775 | #define elf_backend_extern_protected_data 1 | |
4776 | #define elf_backend_hash_symbol elf_kvx_hash_symbol | |
4777 | ||
4778 | #include "elfNN-target.h" |