Commit | Line | Data |
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84e94c90 | 1 | /* Lattice Mico32-specific support for 32-bit ELF |
b90efa5b | 2 | Copyright (C) 2008-2015 Free Software Foundation, Inc. |
84e94c90 NC |
3 | Contributed by Jon Beniston <jon@beniston.com> |
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; if not, write to the Free Software | |
19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, | |
20 | MA 02110-1301, USA. */ | |
21 | ||
84e94c90 | 22 | #include "sysdep.h" |
691bf19c | 23 | #include "bfd.h" |
84e94c90 NC |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | #include "elf/lm32.h" | |
27 | ||
28 | #define DEFAULT_STACK_SIZE 0x20000 | |
29 | ||
30 | #define PLT_ENTRY_SIZE 20 | |
31 | ||
32 | #define PLT0_ENTRY_WORD0 0 | |
33 | #define PLT0_ENTRY_WORD1 0 | |
34 | #define PLT0_ENTRY_WORD2 0 | |
35 | #define PLT0_ENTRY_WORD3 0 | |
36 | #define PLT0_ENTRY_WORD4 0 | |
37 | ||
38 | #define PLT0_PIC_ENTRY_WORD0 0 | |
39 | #define PLT0_PIC_ENTRY_WORD1 0 | |
40 | #define PLT0_PIC_ENTRY_WORD2 0 | |
41 | #define PLT0_PIC_ENTRY_WORD3 0 | |
42 | #define PLT0_PIC_ENTRY_WORD4 0 | |
43 | ||
44 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" | |
45 | ||
6d00b590 | 46 | extern const bfd_target lm32_elf32_fdpic_vec; |
84e94c90 | 47 | |
6d00b590 | 48 | #define IS_FDPIC(bfd) ((bfd)->xvec == &lm32_elf32_fdpic_vec) |
84e94c90 NC |
49 | |
50 | static bfd_reloc_status_type lm32_elf_gprel_reloc | |
51 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); | |
52 | ||
53 | /* The linker needs to keep track of the number of relocs that it | |
54 | decides to copy as dynamic relocs in check_relocs for each symbol. | |
55 | This is so that it can later discard them if they are found to be | |
56 | unnecessary. We store the information in a field extending the | |
57 | regular ELF linker hash table. */ | |
58 | ||
59 | struct elf_lm32_dyn_relocs | |
60 | { | |
61 | struct elf_lm32_dyn_relocs *next; | |
62 | ||
63 | /* The input section of the reloc. */ | |
64 | asection *sec; | |
65 | ||
66 | /* Total number of relocs copied for the input section. */ | |
67 | bfd_size_type count; | |
68 | ||
69 | /* Number of pc-relative relocs copied for the input section. */ | |
70 | bfd_size_type pc_count; | |
71 | }; | |
72 | ||
73 | /* lm32 ELF linker hash entry. */ | |
74 | ||
75 | struct elf_lm32_link_hash_entry | |
76 | { | |
77 | struct elf_link_hash_entry root; | |
78 | ||
79 | /* Track dynamic relocs copied for this symbol. */ | |
80 | struct elf_lm32_dyn_relocs *dyn_relocs; | |
81 | }; | |
82 | ||
83 | /* lm32 ELF linker hash table. */ | |
84 | ||
85 | struct elf_lm32_link_hash_table | |
86 | { | |
87 | struct elf_link_hash_table root; | |
88 | ||
89 | /* Short-cuts to get to dynamic linker sections. */ | |
90 | asection *sgot; | |
91 | asection *sgotplt; | |
92 | asection *srelgot; | |
93 | asection *sfixup32; | |
94 | asection *splt; | |
95 | asection *srelplt; | |
96 | asection *sdynbss; | |
97 | asection *srelbss; | |
98 | ||
99 | int relocs32; | |
100 | }; | |
101 | ||
102 | /* Get the lm32 ELF linker hash table from a link_info structure. */ | |
103 | ||
104 | #define lm32_elf_hash_table(p) \ | |
4dfe6ac6 NC |
105 | (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ |
106 | == LM32_ELF_DATA ? ((struct elf_lm32_link_hash_table *) ((p)->hash)) : NULL) | |
84e94c90 NC |
107 | |
108 | #define lm32fdpic_got_section(info) \ | |
109 | (lm32_elf_hash_table (info)->sgot) | |
110 | #define lm32fdpic_gotrel_section(info) \ | |
111 | (lm32_elf_hash_table (info)->srelgot) | |
112 | #define lm32fdpic_fixup32_section(info) \ | |
113 | (lm32_elf_hash_table (info)->sfixup32) | |
114 | ||
115 | struct weak_symbol_list | |
116 | { | |
117 | const char *name; | |
118 | struct weak_symbol_list *next; | |
119 | }; | |
120 | ||
121 | /* Create an entry in an lm32 ELF linker hash table. */ | |
122 | ||
123 | static struct bfd_hash_entry * | |
124 | lm32_elf_link_hash_newfunc (struct bfd_hash_entry *entry, | |
125 | struct bfd_hash_table *table, | |
126 | const char *string) | |
127 | { | |
128 | struct elf_lm32_link_hash_entry *ret = | |
129 | (struct elf_lm32_link_hash_entry *) entry; | |
130 | ||
131 | /* Allocate the structure if it has not already been allocated by a | |
132 | subclass. */ | |
133 | if (ret == NULL) | |
134 | ret = bfd_hash_allocate (table, | |
135 | sizeof (struct elf_lm32_link_hash_entry)); | |
136 | if (ret == NULL) | |
137 | return NULL; | |
138 | ||
139 | /* Call the allocation method of the superclass. */ | |
140 | ret = ((struct elf_lm32_link_hash_entry *) | |
141 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, | |
142 | table, string)); | |
143 | if (ret != NULL) | |
144 | { | |
145 | struct elf_lm32_link_hash_entry *eh; | |
146 | ||
147 | eh = (struct elf_lm32_link_hash_entry *) ret; | |
148 | eh->dyn_relocs = NULL; | |
149 | } | |
150 | ||
151 | return (struct bfd_hash_entry *) ret; | |
152 | } | |
153 | ||
154 | /* Create an lm32 ELF linker hash table. */ | |
155 | ||
156 | static struct bfd_link_hash_table * | |
157 | lm32_elf_link_hash_table_create (bfd *abfd) | |
158 | { | |
159 | struct elf_lm32_link_hash_table *ret; | |
160 | bfd_size_type amt = sizeof (struct elf_lm32_link_hash_table); | |
161 | ||
7bf52ea2 | 162 | ret = bfd_zmalloc (amt); |
84e94c90 NC |
163 | if (ret == NULL) |
164 | return NULL; | |
165 | ||
166 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, | |
167 | lm32_elf_link_hash_newfunc, | |
4dfe6ac6 NC |
168 | sizeof (struct elf_lm32_link_hash_entry), |
169 | LM32_ELF_DATA)) | |
84e94c90 NC |
170 | { |
171 | free (ret); | |
172 | return NULL; | |
173 | } | |
174 | ||
84e94c90 NC |
175 | return &ret->root.root; |
176 | } | |
177 | ||
178 | /* Add a fixup to the ROFIXUP section. */ | |
179 | ||
180 | static bfd_vma | |
181 | _lm32fdpic_add_rofixup (bfd *output_bfd, asection *rofixup, bfd_vma relocation) | |
182 | { | |
183 | bfd_vma fixup_offset; | |
184 | ||
185 | if (rofixup->flags & SEC_EXCLUDE) | |
186 | return -1; | |
187 | ||
188 | fixup_offset = rofixup->reloc_count * 4; | |
189 | if (rofixup->contents) | |
190 | { | |
191 | BFD_ASSERT (fixup_offset < rofixup->size); | |
192 | if (fixup_offset < rofixup->size) | |
193 | bfd_put_32 (output_bfd, relocation, rofixup->contents + fixup_offset); | |
194 | } | |
195 | rofixup->reloc_count++; | |
196 | ||
197 | return fixup_offset; | |
198 | } | |
199 | ||
200 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up | |
201 | shortcuts to them in our hash table. */ | |
202 | ||
203 | static bfd_boolean | |
204 | create_got_section (bfd *dynobj, struct bfd_link_info *info) | |
205 | { | |
206 | struct elf_lm32_link_hash_table *htab; | |
207 | asection *s; | |
208 | ||
209 | /* This function may be called more than once. */ | |
3d4d4302 AM |
210 | s = bfd_get_linker_section (dynobj, ".got"); |
211 | if (s != NULL) | |
84e94c90 NC |
212 | return TRUE; |
213 | ||
4dfe6ac6 NC |
214 | htab = lm32_elf_hash_table (info); |
215 | if (htab == NULL) | |
216 | return FALSE; | |
217 | ||
84e94c90 NC |
218 | if (! _bfd_elf_create_got_section (dynobj, info)) |
219 | return FALSE; | |
220 | ||
3d4d4302 AM |
221 | htab->sgot = bfd_get_linker_section (dynobj, ".got"); |
222 | htab->sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); | |
223 | htab->srelgot = bfd_get_linker_section (dynobj, ".rela.got"); | |
64e77c6d | 224 | if (! htab->sgot || ! htab->sgotplt || ! htab->srelgot) |
84e94c90 NC |
225 | abort (); |
226 | ||
84e94c90 NC |
227 | return TRUE; |
228 | } | |
229 | ||
230 | /* Create .rofixup sections in DYNOBJ, and set up | |
231 | shortcuts to them in our hash table. */ | |
232 | ||
233 | static bfd_boolean | |
234 | create_rofixup_section (bfd *dynobj, struct bfd_link_info *info) | |
235 | { | |
236 | struct elf_lm32_link_hash_table *htab; | |
237 | htab = lm32_elf_hash_table (info); | |
238 | ||
4dfe6ac6 NC |
239 | if (htab == NULL) |
240 | return FALSE; | |
241 | ||
242 | /* Fixup section for R_LM32_32 relocs. */ | |
3d4d4302 AM |
243 | lm32fdpic_fixup32_section (info) |
244 | = bfd_make_section_anyway_with_flags (dynobj, | |
245 | ".rofixup", | |
246 | (SEC_ALLOC | |
247 | | SEC_LOAD | |
248 | | SEC_HAS_CONTENTS | |
249 | | SEC_IN_MEMORY | |
250 | | SEC_LINKER_CREATED | |
251 | | SEC_READONLY)); | |
84e94c90 | 252 | if (lm32fdpic_fixup32_section (info) == NULL |
3d4d4302 AM |
253 | || ! bfd_set_section_alignment (dynobj, |
254 | lm32fdpic_fixup32_section (info), 2)) | |
84e94c90 NC |
255 | return FALSE; |
256 | ||
257 | return TRUE; | |
258 | } | |
259 | ||
260 | static reloc_howto_type lm32_elf_howto_table [] = | |
261 | { | |
262 | /* This reloc does nothing. */ | |
263 | HOWTO (R_LM32_NONE, /* type */ | |
264 | 0, /* rightshift */ | |
6346d5ca AM |
265 | 3, /* size (0 = byte, 1 = short, 2 = long) */ |
266 | 0, /* bitsize */ | |
84e94c90 NC |
267 | FALSE, /* pc_relative */ |
268 | 0, /* bitpos */ | |
6346d5ca | 269 | complain_overflow_dont, /* complain_on_overflow */ |
84e94c90 NC |
270 | bfd_elf_generic_reloc, /* special_function */ |
271 | "R_LM32_NONE", /* name */ | |
272 | FALSE, /* partial_inplace */ | |
273 | 0, /* src_mask */ | |
274 | 0, /* dst_mask */ | |
275 | FALSE), /* pcrel_offset */ | |
276 | ||
277 | /* An 8 bit absolute relocation. */ | |
278 | HOWTO (R_LM32_8, /* type */ | |
279 | 0, /* rightshift */ | |
280 | 0, /* size (0 = byte, 1 = short, 2 = long) */ | |
281 | 8, /* bitsize */ | |
282 | FALSE, /* pc_relative */ | |
283 | 0, /* bitpos */ | |
284 | complain_overflow_bitfield,/* complain_on_overflow */ | |
285 | bfd_elf_generic_reloc, /* special_function */ | |
286 | "R_LM32_8", /* name */ | |
287 | FALSE, /* partial_inplace */ | |
288 | 0, /* src_mask */ | |
289 | 0xff, /* dst_mask */ | |
290 | FALSE), /* pcrel_offset */ | |
291 | ||
292 | /* A 16 bit absolute relocation. */ | |
293 | HOWTO (R_LM32_16, /* type */ | |
294 | 0, /* rightshift */ | |
295 | 1, /* size (0 = byte, 1 = short, 2 = long) */ | |
296 | 16, /* bitsize */ | |
297 | FALSE, /* pc_relative */ | |
298 | 0, /* bitpos */ | |
299 | complain_overflow_bitfield,/* complain_on_overflow */ | |
300 | bfd_elf_generic_reloc, /* special_function */ | |
301 | "R_LM32_16", /* name */ | |
302 | FALSE, /* partial_inplace */ | |
303 | 0, /* src_mask */ | |
304 | 0xffff, /* dst_mask */ | |
305 | FALSE), /* pcrel_offset */ | |
306 | ||
307 | /* A 32 bit absolute relocation. */ | |
308 | HOWTO (R_LM32_32, /* type */ | |
309 | 0, /* rightshift */ | |
310 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
311 | 32, /* bitsize */ | |
312 | FALSE, /* pc_relative */ | |
313 | 0, /* bitpos */ | |
314 | complain_overflow_bitfield,/* complain_on_overflow */ | |
315 | bfd_elf_generic_reloc, /* special_function */ | |
316 | "R_LM32_32", /* name */ | |
317 | FALSE, /* partial_inplace */ | |
318 | 0, /* src_mask */ | |
319 | 0xffffffff, /* dst_mask */ | |
320 | FALSE), /* pcrel_offset */ | |
321 | ||
322 | HOWTO (R_LM32_HI16, /* type */ | |
323 | 16, /* rightshift */ | |
324 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
325 | 16, /* bitsize */ | |
326 | FALSE, /* pc_relative */ | |
327 | 0, /* bitpos */ | |
328 | complain_overflow_bitfield,/* complain_on_overflow */ | |
329 | bfd_elf_generic_reloc, /* special_function */ | |
330 | "R_LM32_HI16", /* name */ | |
331 | FALSE, /* partial_inplace */ | |
332 | 0, /* src_mask */ | |
333 | 0xffff, /* dst_mask */ | |
334 | FALSE), /* pcrel_offset */ | |
335 | ||
336 | HOWTO (R_LM32_LO16, /* type */ | |
337 | 0, /* rightshift */ | |
338 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
339 | 16, /* bitsize */ | |
340 | FALSE, /* pc_relative */ | |
341 | 0, /* bitpos */ | |
342 | complain_overflow_dont, /* complain_on_overflow */ | |
343 | bfd_elf_generic_reloc, /* special_function */ | |
344 | "R_LM32_LO16", /* name */ | |
345 | FALSE, /* partial_inplace */ | |
346 | 0, /* src_mask */ | |
347 | 0xffff, /* dst_mask */ | |
348 | FALSE), /* pcrel_offset */ | |
349 | ||
350 | HOWTO (R_LM32_GPREL16, /* type */ | |
351 | 0, /* rightshift */ | |
352 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
353 | 16, /* bitsize */ | |
354 | FALSE, /* pc_relative */ | |
355 | 0, /* bitpos */ | |
356 | complain_overflow_dont, /* complain_on_overflow */ | |
357 | lm32_elf_gprel_reloc, /* special_function */ | |
358 | "R_LM32_GPREL16", /* name */ | |
359 | FALSE, /* partial_inplace */ | |
360 | 0, /* src_mask */ | |
361 | 0xffff, /* dst_mask */ | |
362 | FALSE), /* pcrel_offset */ | |
363 | ||
364 | HOWTO (R_LM32_CALL, /* type */ | |
365 | 2, /* rightshift */ | |
366 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
367 | 26, /* bitsize */ | |
368 | TRUE, /* pc_relative */ | |
369 | 0, /* bitpos */ | |
370 | complain_overflow_signed, /* complain_on_overflow */ | |
371 | bfd_elf_generic_reloc, /* special_function */ | |
372 | "R_LM32_CALL", /* name */ | |
373 | FALSE, /* partial_inplace */ | |
374 | 0, /* src_mask */ | |
375 | 0x3ffffff, /* dst_mask */ | |
376 | TRUE), /* pcrel_offset */ | |
377 | ||
378 | HOWTO (R_LM32_BRANCH, /* type */ | |
379 | 2, /* rightshift */ | |
380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
381 | 16, /* bitsize */ | |
382 | TRUE, /* pc_relative */ | |
383 | 0, /* bitpos */ | |
384 | complain_overflow_signed, /* complain_on_overflow */ | |
385 | bfd_elf_generic_reloc, /* special_function */ | |
386 | "R_LM32_BRANCH", /* name */ | |
387 | FALSE, /* partial_inplace */ | |
388 | 0, /* src_mask */ | |
389 | 0xffff, /* dst_mask */ | |
390 | TRUE), /* pcrel_offset */ | |
391 | ||
392 | /* GNU extension to record C++ vtable hierarchy. */ | |
393 | HOWTO (R_LM32_GNU_VTINHERIT, /* type */ | |
394 | 0, /* rightshift */ | |
395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
396 | 0, /* bitsize */ | |
397 | FALSE, /* pc_relative */ | |
398 | 0, /* bitpos */ | |
399 | complain_overflow_dont, /* complain_on_overflow */ | |
400 | NULL, /* special_function */ | |
401 | "R_LM32_GNU_VTINHERIT", /* name */ | |
402 | FALSE, /* partial_inplace */ | |
403 | 0, /* src_mask */ | |
404 | 0, /* dst_mask */ | |
405 | FALSE), /* pcrel_offset */ | |
406 | ||
407 | /* GNU extension to record C++ vtable member usage. */ | |
408 | HOWTO (R_LM32_GNU_VTENTRY, /* type */ | |
409 | 0, /* rightshift */ | |
410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
411 | 0, /* bitsize */ | |
412 | FALSE, /* pc_relative */ | |
413 | 0, /* bitpos */ | |
414 | complain_overflow_dont, /* complain_on_overflow */ | |
415 | _bfd_elf_rel_vtable_reloc_fn,/* special_function */ | |
416 | "R_LM32_GNU_VTENTRY", /* name */ | |
417 | FALSE, /* partial_inplace */ | |
418 | 0, /* src_mask */ | |
419 | 0, /* dst_mask */ | |
420 | FALSE), /* pcrel_offset */ | |
421 | ||
422 | HOWTO (R_LM32_16_GOT, /* type */ | |
423 | 0, /* rightshift */ | |
424 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
425 | 16, /* bitsize */ | |
426 | FALSE, /* pc_relative */ | |
427 | 0, /* bitpos */ | |
428 | complain_overflow_signed, /* complain_on_overflow */ | |
429 | bfd_elf_generic_reloc, /* special_function */ | |
430 | "R_LM32_16_GOT", /* name */ | |
431 | FALSE, /* partial_inplace */ | |
432 | 0, /* src_mask */ | |
433 | 0xffff, /* dst_mask */ | |
434 | FALSE), /* pcrel_offset */ | |
435 | ||
436 | HOWTO (R_LM32_GOTOFF_HI16, /* type */ | |
437 | 16, /* rightshift */ | |
438 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
439 | 16, /* bitsize */ | |
440 | FALSE, /* pc_relative */ | |
441 | 0, /* bitpos */ | |
442 | complain_overflow_dont, /* complain_on_overflow */ | |
443 | bfd_elf_generic_reloc, /* special_function */ | |
444 | "R_LM32_GOTOFF_HI16", /* name */ | |
445 | FALSE, /* partial_inplace */ | |
446 | 0xffff, /* src_mask */ | |
447 | 0xffff, /* dst_mask */ | |
448 | FALSE), /* pcrel_offset */ | |
449 | ||
450 | HOWTO (R_LM32_GOTOFF_LO16, /* type */ | |
451 | 0, /* rightshift */ | |
452 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
453 | 16, /* bitsize */ | |
454 | FALSE, /* pc_relative */ | |
455 | 0, /* bitpos */ | |
456 | complain_overflow_dont, /* complain_on_overflow */ | |
457 | bfd_elf_generic_reloc, /* special_function */ | |
458 | "R_LM32_GOTOFF_LO16", /* name */ | |
459 | FALSE, /* partial_inplace */ | |
460 | 0xffff, /* src_mask */ | |
461 | 0xffff, /* dst_mask */ | |
462 | FALSE), /* pcrel_offset */ | |
463 | ||
464 | HOWTO (R_LM32_COPY, /* type */ | |
465 | 0, /* rightshift */ | |
466 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
467 | 32, /* bitsize */ | |
468 | FALSE, /* pc_relative */ | |
469 | 0, /* bitpos */ | |
470 | complain_overflow_bitfield, /* complain_on_overflow */ | |
471 | bfd_elf_generic_reloc, /* special_function */ | |
472 | "R_LM32_COPY", /* name */ | |
473 | FALSE, /* partial_inplace */ | |
474 | 0xffffffff, /* src_mask */ | |
475 | 0xffffffff, /* dst_mask */ | |
476 | FALSE), /* pcrel_offset */ | |
477 | ||
478 | HOWTO (R_LM32_GLOB_DAT, /* type */ | |
479 | 0, /* rightshift */ | |
480 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
481 | 32, /* bitsize */ | |
482 | FALSE, /* pc_relative */ | |
483 | 0, /* bitpos */ | |
484 | complain_overflow_bitfield, /* complain_on_overflow */ | |
485 | bfd_elf_generic_reloc, /* special_function */ | |
486 | "R_LM32_GLOB_DAT", /* name */ | |
487 | FALSE, /* partial_inplace */ | |
488 | 0xffffffff, /* src_mask */ | |
489 | 0xffffffff, /* dst_mask */ | |
490 | FALSE), /* pcrel_offset */ | |
491 | ||
492 | HOWTO (R_LM32_JMP_SLOT, /* type */ | |
493 | 0, /* rightshift */ | |
494 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
495 | 32, /* bitsize */ | |
496 | FALSE, /* pc_relative */ | |
497 | 0, /* bitpos */ | |
498 | complain_overflow_bitfield, /* complain_on_overflow */ | |
499 | bfd_elf_generic_reloc, /* special_function */ | |
500 | "R_LM32_JMP_SLOT", /* name */ | |
501 | FALSE, /* partial_inplace */ | |
502 | 0xffffffff, /* src_mask */ | |
503 | 0xffffffff, /* dst_mask */ | |
504 | FALSE), /* pcrel_offset */ | |
505 | ||
506 | HOWTO (R_LM32_RELATIVE, /* type */ | |
507 | 0, /* rightshift */ | |
508 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
509 | 32, /* bitsize */ | |
510 | FALSE, /* pc_relative */ | |
511 | 0, /* bitpos */ | |
512 | complain_overflow_bitfield, /* complain_on_overflow */ | |
513 | bfd_elf_generic_reloc, /* special_function */ | |
514 | "R_LM32_RELATIVE", /* name */ | |
515 | FALSE, /* partial_inplace */ | |
516 | 0xffffffff, /* src_mask */ | |
517 | 0xffffffff, /* dst_mask */ | |
518 | FALSE), /* pcrel_offset */ | |
519 | ||
520 | }; | |
521 | ||
522 | /* Map BFD reloc types to lm32 ELF reloc types. */ | |
523 | ||
524 | struct lm32_reloc_map | |
525 | { | |
526 | bfd_reloc_code_real_type bfd_reloc_val; | |
527 | unsigned char elf_reloc_val; | |
528 | }; | |
529 | ||
530 | static const struct lm32_reloc_map lm32_reloc_map[] = | |
531 | { | |
532 | { BFD_RELOC_NONE, R_LM32_NONE }, | |
533 | { BFD_RELOC_8, R_LM32_8 }, | |
534 | { BFD_RELOC_16, R_LM32_16 }, | |
535 | { BFD_RELOC_32, R_LM32_32 }, | |
536 | { BFD_RELOC_HI16, R_LM32_HI16 }, | |
537 | { BFD_RELOC_LO16, R_LM32_LO16 }, | |
538 | { BFD_RELOC_GPREL16, R_LM32_GPREL16 }, | |
539 | { BFD_RELOC_LM32_CALL, R_LM32_CALL }, | |
540 | { BFD_RELOC_LM32_BRANCH, R_LM32_BRANCH }, | |
541 | { BFD_RELOC_VTABLE_INHERIT, R_LM32_GNU_VTINHERIT }, | |
542 | { BFD_RELOC_VTABLE_ENTRY, R_LM32_GNU_VTENTRY }, | |
543 | { BFD_RELOC_LM32_16_GOT, R_LM32_16_GOT }, | |
544 | { BFD_RELOC_LM32_GOTOFF_HI16, R_LM32_GOTOFF_HI16 }, | |
545 | { BFD_RELOC_LM32_GOTOFF_LO16, R_LM32_GOTOFF_LO16 }, | |
546 | { BFD_RELOC_LM32_COPY, R_LM32_COPY }, | |
547 | { BFD_RELOC_LM32_GLOB_DAT, R_LM32_GLOB_DAT }, | |
548 | { BFD_RELOC_LM32_JMP_SLOT, R_LM32_JMP_SLOT }, | |
549 | { BFD_RELOC_LM32_RELATIVE, R_LM32_RELATIVE }, | |
550 | }; | |
551 | ||
552 | static reloc_howto_type * | |
553 | lm32_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
554 | bfd_reloc_code_real_type code) | |
555 | { | |
556 | unsigned int i; | |
557 | ||
558 | for (i = 0; i < sizeof (lm32_reloc_map) / sizeof (lm32_reloc_map[0]); i++) | |
559 | if (lm32_reloc_map[i].bfd_reloc_val == code) | |
560 | return &lm32_elf_howto_table[lm32_reloc_map[i].elf_reloc_val]; | |
561 | return NULL; | |
562 | } | |
563 | ||
564 | static reloc_howto_type * | |
565 | lm32_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
566 | const char *r_name) | |
567 | { | |
568 | unsigned int i; | |
569 | ||
570 | for (i = 0; | |
571 | i < sizeof (lm32_elf_howto_table) / sizeof (lm32_elf_howto_table[0]); | |
572 | i++) | |
573 | if (lm32_elf_howto_table[i].name != NULL | |
574 | && strcasecmp (lm32_elf_howto_table[i].name, r_name) == 0) | |
575 | return &lm32_elf_howto_table[i]; | |
576 | ||
577 | return NULL; | |
578 | } | |
579 | ||
580 | ||
581 | /* Set the howto pointer for an Lattice Mico32 ELF reloc. */ | |
582 | ||
583 | static void | |
584 | lm32_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, | |
585 | arelent *cache_ptr, | |
586 | Elf_Internal_Rela *dst) | |
587 | { | |
588 | unsigned int r_type; | |
589 | ||
590 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
591 | if (r_type >= (unsigned int) R_LM32_max) |
592 | { | |
64d29018 | 593 | _bfd_error_handler (_("%B: invalid LM32 reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
594 | r_type = 0; |
595 | } | |
84e94c90 NC |
596 | cache_ptr->howto = &lm32_elf_howto_table[r_type]; |
597 | } | |
598 | ||
599 | /* Set the right machine number for an Lattice Mico32 ELF file. */ | |
600 | ||
601 | static bfd_boolean | |
602 | lm32_elf_object_p (bfd *abfd) | |
603 | { | |
604 | return bfd_default_set_arch_mach (abfd, bfd_arch_lm32, bfd_mach_lm32); | |
605 | } | |
606 | ||
607 | /* Set machine type flags just before file is written out. */ | |
608 | ||
609 | static void | |
610 | lm32_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
611 | { | |
612 | elf_elfheader (abfd)->e_machine = EM_LATTICEMICO32; | |
613 | elf_elfheader (abfd)->e_flags &=~ EF_LM32_MACH; | |
614 | switch (bfd_get_mach (abfd)) | |
615 | { | |
616 | case bfd_mach_lm32: | |
617 | elf_elfheader (abfd)->e_flags |= E_LM32_MACH; | |
618 | break; | |
619 | default: | |
620 | abort (); | |
621 | } | |
622 | } | |
623 | ||
624 | /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a | |
625 | dangerous relocation. */ | |
626 | ||
627 | static bfd_boolean | |
628 | lm32_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) | |
629 | { | |
630 | unsigned int count; | |
631 | asymbol **sym; | |
632 | unsigned int i; | |
633 | ||
634 | /* If we've already figured out what GP will be, just return it. */ | |
635 | *pgp = _bfd_get_gp_value (output_bfd); | |
636 | if (*pgp) | |
637 | return TRUE; | |
638 | ||
639 | count = bfd_get_symcount (output_bfd); | |
640 | sym = bfd_get_outsymbols (output_bfd); | |
641 | ||
642 | /* The linker script will have created a symbol named `_gp' with the | |
643 | appropriate value. */ | |
644 | if (sym == NULL) | |
645 | i = count; | |
646 | else | |
647 | { | |
648 | for (i = 0; i < count; i++, sym++) | |
649 | { | |
650 | const char *name; | |
651 | ||
652 | name = bfd_asymbol_name (*sym); | |
653 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
654 | { | |
655 | *pgp = bfd_asymbol_value (*sym); | |
656 | _bfd_set_gp_value (output_bfd, *pgp); | |
657 | break; | |
658 | } | |
659 | } | |
660 | } | |
661 | ||
662 | if (i >= count) | |
663 | { | |
664 | /* Only get the error once. */ | |
665 | *pgp = 4; | |
666 | _bfd_set_gp_value (output_bfd, *pgp); | |
667 | return FALSE; | |
668 | } | |
669 | ||
670 | return TRUE; | |
671 | } | |
672 | ||
673 | /* We have to figure out the gp value, so that we can adjust the | |
674 | symbol value correctly. We look up the symbol _gp in the output | |
675 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
676 | target data. We don't need to adjust the symbol value for an | |
677 | external symbol if we are producing relocatable output. */ | |
678 | ||
679 | static bfd_reloc_status_type | |
680 | lm32_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, | |
681 | char **error_message, bfd_vma *pgp) | |
682 | { | |
683 | if (bfd_is_und_section (symbol->section) && !relocatable) | |
684 | { | |
685 | *pgp = 0; | |
686 | return bfd_reloc_undefined; | |
687 | } | |
688 | ||
689 | *pgp = _bfd_get_gp_value (output_bfd); | |
690 | if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
691 | { | |
692 | if (relocatable) | |
693 | { | |
694 | /* Make up a value. */ | |
695 | *pgp = symbol->section->output_section->vma + 0x4000; | |
696 | _bfd_set_gp_value (output_bfd, *pgp); | |
697 | } | |
698 | else if (!lm32_elf_assign_gp (output_bfd, pgp)) | |
699 | { | |
700 | *error_message = | |
701 | (char *) | |
702 | _("global pointer relative relocation when _gp not defined"); | |
703 | return bfd_reloc_dangerous; | |
704 | } | |
705 | } | |
706 | ||
707 | return bfd_reloc_ok; | |
708 | } | |
709 | ||
710 | static bfd_reloc_status_type | |
711 | lm32_elf_do_gprel_relocate (bfd *abfd, | |
712 | reloc_howto_type *howto, | |
713 | asection *input_section ATTRIBUTE_UNUSED, | |
714 | bfd_byte *data, | |
715 | bfd_vma offset, | |
716 | bfd_vma symbol_value, | |
717 | bfd_vma addend) | |
718 | { | |
719 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
720 | data, offset, symbol_value, addend); | |
721 | } | |
722 | ||
723 | static bfd_reloc_status_type | |
724 | lm32_elf_gprel_reloc (bfd *abfd, | |
725 | arelent *reloc_entry, | |
726 | asymbol *symbol, | |
727 | void *data, | |
728 | asection *input_section, | |
729 | bfd *output_bfd, | |
730 | char **msg) | |
731 | { | |
732 | bfd_vma relocation; | |
733 | bfd_vma gp; | |
734 | bfd_reloc_status_type r; | |
735 | ||
736 | if (output_bfd != (bfd *) NULL | |
737 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
738 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
739 | { | |
740 | reloc_entry->address += input_section->output_offset; | |
741 | return bfd_reloc_ok; | |
742 | } | |
743 | ||
744 | if (output_bfd != NULL) | |
745 | return bfd_reloc_ok; | |
746 | ||
747 | relocation = symbol->value | |
748 | + symbol->section->output_section->vma + symbol->section->output_offset; | |
749 | ||
750 | if ((r = | |
751 | lm32_elf_final_gp (abfd, symbol, FALSE, msg, &gp)) == bfd_reloc_ok) | |
752 | { | |
753 | relocation = relocation + reloc_entry->addend - gp; | |
754 | reloc_entry->addend = 0; | |
755 | if ((signed) relocation < -32768 || (signed) relocation > 32767) | |
756 | { | |
757 | *msg = _("global pointer relative address out of range"); | |
758 | r = bfd_reloc_outofrange; | |
759 | } | |
760 | else | |
761 | { | |
762 | r = lm32_elf_do_gprel_relocate (abfd, reloc_entry->howto, | |
763 | input_section, | |
764 | data, reloc_entry->address, | |
765 | relocation, reloc_entry->addend); | |
766 | } | |
767 | } | |
768 | ||
769 | return r; | |
770 | } | |
771 | ||
772 | /* Find the segment number in which OSEC, and output section, is | |
773 | located. */ | |
774 | ||
775 | static unsigned | |
776 | _lm32fdpic_osec_to_segment (bfd *output_bfd, asection *osec) | |
777 | { | |
778 | struct elf_segment_map *m; | |
779 | Elf_Internal_Phdr *p; | |
780 | ||
781 | /* Find the segment that contains the output_section. */ | |
12bd6957 | 782 | for (m = elf_seg_map (output_bfd), p = elf_tdata (output_bfd)->phdr; |
84e94c90 NC |
783 | m != NULL; |
784 | m = m->next, p++) | |
785 | { | |
786 | int i; | |
787 | ||
788 | for (i = m->count - 1; i >= 0; i--) | |
789 | if (m->sections[i] == osec) | |
790 | break; | |
791 | ||
792 | if (i >= 0) | |
793 | break; | |
794 | } | |
795 | ||
796 | return p - elf_tdata (output_bfd)->phdr; | |
797 | } | |
798 | ||
799 | /* Determine if an output section is read-only. */ | |
800 | ||
801 | inline static bfd_boolean | |
802 | _lm32fdpic_osec_readonly_p (bfd *output_bfd, asection *osec) | |
803 | { | |
804 | unsigned seg = _lm32fdpic_osec_to_segment (output_bfd, osec); | |
805 | ||
806 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); | |
807 | } | |
808 | ||
809 | /* Relocate a section */ | |
810 | ||
811 | static bfd_boolean | |
812 | lm32_elf_relocate_section (bfd *output_bfd, | |
813 | struct bfd_link_info *info, | |
814 | bfd *input_bfd, | |
815 | asection *input_section, | |
816 | bfd_byte *contents, | |
817 | Elf_Internal_Rela *relocs, | |
818 | Elf_Internal_Sym *local_syms, | |
819 | asection **local_sections) | |
820 | { | |
821 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
822 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
823 | Elf_Internal_Rela *rel, *relend; | |
84e94c90 NC |
824 | struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info); |
825 | bfd *dynobj; | |
826 | bfd_vma *local_got_offsets; | |
c7e2358a | 827 | asection *sgot; |
84e94c90 | 828 | |
4dfe6ac6 NC |
829 | if (htab == NULL) |
830 | return FALSE; | |
831 | ||
84e94c90 NC |
832 | dynobj = htab->root.dynobj; |
833 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
834 | ||
835 | sgot = htab->sgot; | |
84e94c90 NC |
836 | |
837 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
838 | sym_hashes = elf_sym_hashes (input_bfd); | |
839 | ||
840 | rel = relocs; | |
841 | relend = relocs + input_section->reloc_count; | |
842 | for (; rel < relend; rel++) | |
843 | { | |
844 | reloc_howto_type *howto; | |
845 | unsigned int r_type; | |
846 | unsigned long r_symndx; | |
847 | Elf_Internal_Sym *sym; | |
848 | asection *sec; | |
849 | struct elf_link_hash_entry *h; | |
850 | bfd_vma relocation; | |
851 | bfd_vma gp; | |
852 | bfd_reloc_status_type r; | |
853 | const char *name = NULL; | |
84e94c90 NC |
854 | |
855 | r_symndx = ELF32_R_SYM (rel->r_info); | |
856 | r_type = ELF32_R_TYPE (rel->r_info); | |
857 | ||
858 | if (r_type == R_LM32_GNU_VTENTRY | |
859 | || r_type == R_LM32_GNU_VTINHERIT ) | |
860 | continue; | |
861 | ||
862 | h = NULL; | |
863 | sym = NULL; | |
864 | sec = NULL; | |
865 | ||
866 | howto = lm32_elf_howto_table + r_type; | |
867 | ||
868 | if (r_symndx < symtab_hdr->sh_info) | |
869 | { | |
870 | /* It's a local symbol. */ | |
871 | sym = local_syms + r_symndx; | |
c7e2358a | 872 | sec = local_sections[r_symndx]; |
84e94c90 NC |
873 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
874 | name = bfd_elf_string_from_elf_section | |
875 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
876 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
877 | } | |
878 | else | |
879 | { | |
880 | /* It's a global symbol. */ | |
881 | bfd_boolean unresolved_reloc; | |
62d887d4 | 882 | bfd_boolean warned, ignored; |
84e94c90 NC |
883 | |
884 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
885 | r_symndx, symtab_hdr, sym_hashes, | |
886 | h, sec, relocation, | |
62d887d4 | 887 | unresolved_reloc, warned, ignored); |
84e94c90 NC |
888 | name = h->root.root.string; |
889 | } | |
890 | ||
dbaa2011 | 891 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 892 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 893 | rel, 1, relend, howto, 0, contents); |
84e94c90 | 894 | |
0e1862bb | 895 | if (bfd_link_relocatable (info)) |
84e94c90 NC |
896 | { |
897 | /* This is a relocatable link. We don't have to change | |
898 | anything, unless the reloc is against a section symbol, | |
899 | in which case we have to adjust according to where the | |
900 | section symbol winds up in the output section. */ | |
901 | if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
902 | continue; | |
903 | ||
904 | /* If partial_inplace, we need to store any additional addend | |
905 | back in the section. */ | |
906 | if (! howto->partial_inplace) | |
907 | continue; | |
908 | ||
909 | /* Shouldn't reach here. */ | |
910 | abort (); | |
911 | r = bfd_reloc_ok; | |
912 | } | |
913 | else | |
914 | { | |
915 | switch (howto->type) | |
916 | { | |
917 | case R_LM32_GPREL16: | |
918 | if (!lm32_elf_assign_gp (output_bfd, &gp)) | |
919 | r = bfd_reloc_dangerous; | |
920 | else | |
921 | { | |
922 | relocation = relocation + rel->r_addend - gp; | |
923 | rel->r_addend = 0; | |
924 | if ((signed)relocation < -32768 || (signed)relocation > 32767) | |
925 | r = bfd_reloc_outofrange; | |
926 | else | |
927 | { | |
928 | r = _bfd_final_link_relocate (howto, input_bfd, | |
929 | input_section, contents, | |
930 | rel->r_offset, relocation, | |
931 | rel->r_addend); | |
932 | } | |
933 | } | |
934 | break; | |
935 | case R_LM32_16_GOT: | |
936 | /* Relocation is to the entry for this symbol in the global | |
937 | offset table. */ | |
938 | BFD_ASSERT (sgot != NULL); | |
939 | if (h != NULL) | |
940 | { | |
941 | bfd_boolean dyn; | |
942 | bfd_vma off; | |
943 | ||
944 | off = h->got.offset; | |
945 | BFD_ASSERT (off != (bfd_vma) -1); | |
946 | ||
947 | dyn = htab->root.dynamic_sections_created; | |
0e1862bb L |
948 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
949 | bfd_link_pic (info), | |
950 | h) | |
951 | || (bfd_link_pic (info) | |
84e94c90 NC |
952 | && (info->symbolic |
953 | || h->dynindx == -1 | |
954 | || h->forced_local) | |
955 | && h->def_regular)) | |
956 | { | |
957 | /* This is actually a static link, or it is a | |
958 | -Bsymbolic link and the symbol is defined | |
959 | locally, or the symbol was forced to be local | |
960 | because of a version file. We must initialize | |
961 | this entry in the global offset table. Since the | |
962 | offset must always be a multiple of 4, we use the | |
963 | least significant bit to record whether we have | |
964 | initialized it already. | |
965 | ||
966 | When doing a dynamic link, we create a .rela.got | |
967 | relocation entry to initialize the value. This | |
968 | is done in the finish_dynamic_symbol routine. */ | |
969 | if ((off & 1) != 0) | |
970 | off &= ~1; | |
971 | else | |
972 | { | |
973 | /* Write entry in GOT */ | |
974 | bfd_put_32 (output_bfd, relocation, | |
975 | sgot->contents + off); | |
976 | /* Create entry in .rofixup pointing to GOT entry. */ | |
977 | if (IS_FDPIC (output_bfd) && h->root.type != bfd_link_hash_undefweak) | |
978 | { | |
979 | _lm32fdpic_add_rofixup (output_bfd, | |
980 | lm32fdpic_fixup32_section | |
981 | (info), | |
982 | sgot->output_section->vma | |
983 | + sgot->output_offset | |
984 | + off); | |
985 | } | |
986 | /* Mark GOT entry as having been written. */ | |
987 | h->got.offset |= 1; | |
988 | } | |
989 | } | |
990 | ||
991 | relocation = sgot->output_offset + off; | |
992 | } | |
993 | else | |
994 | { | |
995 | bfd_vma off; | |
996 | bfd_byte *loc; | |
997 | ||
998 | BFD_ASSERT (local_got_offsets != NULL | |
999 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
1000 | ||
1001 | /* Get offset into GOT table. */ | |
1002 | off = local_got_offsets[r_symndx]; | |
1003 | ||
1004 | /* The offset must always be a multiple of 4. We use | |
1005 | the least significant bit to record whether we have | |
1006 | already processed this entry. */ | |
1007 | if ((off & 1) != 0) | |
1008 | off &= ~1; | |
1009 | else | |
1010 | { | |
1011 | /* Write entry in GOT. */ | |
1012 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1013 | /* Create entry in .rofixup pointing to GOT entry. */ | |
1014 | if (IS_FDPIC (output_bfd)) | |
1015 | { | |
1016 | _lm32fdpic_add_rofixup (output_bfd, | |
1017 | lm32fdpic_fixup32_section | |
1018 | (info), | |
1019 | sgot->output_section->vma | |
1020 | + sgot->output_offset | |
1021 | + off); | |
1022 | } | |
1023 | ||
0e1862bb | 1024 | if (bfd_link_pic (info)) |
84e94c90 NC |
1025 | { |
1026 | asection *srelgot; | |
1027 | Elf_Internal_Rela outrel; | |
1028 | ||
1029 | /* We need to generate a R_LM32_RELATIVE reloc | |
1030 | for the dynamic linker. */ | |
3d4d4302 AM |
1031 | srelgot = bfd_get_linker_section (dynobj, |
1032 | ".rela.got"); | |
84e94c90 NC |
1033 | BFD_ASSERT (srelgot != NULL); |
1034 | ||
1035 | outrel.r_offset = (sgot->output_section->vma | |
1036 | + sgot->output_offset | |
1037 | + off); | |
1038 | outrel.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE); | |
1039 | outrel.r_addend = relocation; | |
1040 | loc = srelgot->contents; | |
1041 | loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
1042 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); | |
1043 | ++srelgot->reloc_count; | |
1044 | } | |
1045 | ||
1046 | local_got_offsets[r_symndx] |= 1; | |
1047 | } | |
1048 | ||
1049 | ||
1050 | relocation = sgot->output_offset + off; | |
1051 | } | |
1052 | ||
1053 | /* Addend should be zero. */ | |
1054 | if (rel->r_addend != 0) | |
1055 | (*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT")); | |
1056 | ||
1057 | r = _bfd_final_link_relocate (howto, | |
1058 | input_bfd, | |
1059 | input_section, | |
1060 | contents, | |
1061 | rel->r_offset, | |
1062 | relocation, | |
1063 | rel->r_addend); | |
1064 | break; | |
1065 | ||
1066 | case R_LM32_GOTOFF_LO16: | |
1067 | case R_LM32_GOTOFF_HI16: | |
1068 | /* Relocation is offset from GOT. */ | |
1069 | BFD_ASSERT (sgot != NULL); | |
1070 | relocation -= sgot->output_section->vma; | |
1071 | /* Account for sign-extension. */ | |
1072 | if ((r_type == R_LM32_GOTOFF_HI16) | |
1073 | && ((relocation + rel->r_addend) & 0x8000)) | |
1074 | rel->r_addend += 0x10000; | |
1075 | r = _bfd_final_link_relocate (howto, | |
1076 | input_bfd, | |
1077 | input_section, | |
1078 | contents, | |
1079 | rel->r_offset, | |
1080 | relocation, | |
1081 | rel->r_addend); | |
1082 | break; | |
1083 | ||
1084 | case R_LM32_32: | |
1085 | if (IS_FDPIC (output_bfd)) | |
1086 | { | |
1087 | if ((!h) || (h && h->root.type != bfd_link_hash_undefweak)) | |
1088 | { | |
1089 | /* Only create .rofixup entries for relocs in loadable sections. */ | |
1090 | if ((bfd_get_section_flags (output_bfd, input_section->output_section) | |
1091 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
1092 | ||
1093 | { | |
1094 | /* Check address to be modified is writable. */ | |
1095 | if (_lm32fdpic_osec_readonly_p (output_bfd, | |
1096 | input_section | |
1097 | ->output_section)) | |
1098 | { | |
1099 | info->callbacks->warning | |
1100 | (info, | |
1101 | _("cannot emit dynamic relocations in read-only section"), | |
1102 | name, input_bfd, input_section, rel->r_offset); | |
1103 | return FALSE; | |
1104 | } | |
1105 | /* Create entry in .rofixup section. */ | |
1106 | _lm32fdpic_add_rofixup (output_bfd, | |
1107 | lm32fdpic_fixup32_section (info), | |
1108 | input_section->output_section->vma | |
1109 | + input_section->output_offset | |
1110 | + rel->r_offset); | |
1111 | } | |
1112 | } | |
1113 | } | |
1114 | /* Fall through. */ | |
1115 | ||
1116 | default: | |
1117 | r = _bfd_final_link_relocate (howto, | |
1118 | input_bfd, | |
1119 | input_section, | |
1120 | contents, | |
1121 | rel->r_offset, | |
1122 | relocation, | |
1123 | rel->r_addend); | |
1124 | break; | |
1125 | } | |
1126 | } | |
1127 | ||
1128 | if (r != bfd_reloc_ok) | |
1129 | { | |
84e94c90 NC |
1130 | const char *msg = NULL; |
1131 | arelent bfd_reloc; | |
84e94c90 NC |
1132 | |
1133 | lm32_info_to_howto_rela (input_bfd, &bfd_reloc, rel); | |
1134 | howto = bfd_reloc.howto; | |
1135 | ||
1136 | if (h != NULL) | |
1137 | name = h->root.root.string; | |
1138 | else | |
1139 | { | |
1140 | name = (bfd_elf_string_from_elf_section | |
1141 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1142 | if (name == NULL || *name == '\0') | |
1143 | name = bfd_section_name (input_bfd, sec); | |
1144 | } | |
1145 | ||
1146 | switch (r) | |
1147 | { | |
1148 | case bfd_reloc_overflow: | |
1149 | if ((h != NULL) | |
1150 | && (h->root.type == bfd_link_hash_undefweak)) | |
1151 | break; | |
1152 | if (! ((*info->callbacks->reloc_overflow) | |
1153 | (info, (h ? &h->root : NULL), name, howto->name, | |
1154 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset))) | |
1155 | return FALSE; | |
1156 | break; | |
1157 | ||
1158 | case bfd_reloc_undefined: | |
1159 | if (! ((*info->callbacks->undefined_symbol) | |
1160 | (info, name, input_bfd, input_section, | |
1161 | rel->r_offset, TRUE))) | |
1162 | return FALSE; | |
1163 | break; | |
1164 | ||
1165 | case bfd_reloc_outofrange: | |
1166 | msg = _("internal error: out of range error"); | |
1167 | goto common_error; | |
1168 | ||
1169 | case bfd_reloc_notsupported: | |
1170 | msg = _("internal error: unsupported relocation error"); | |
1171 | goto common_error; | |
1172 | ||
1173 | case bfd_reloc_dangerous: | |
1174 | msg = _("internal error: dangerous error"); | |
1175 | goto common_error; | |
1176 | ||
1177 | default: | |
1178 | msg = _("internal error: unknown error"); | |
1179 | /* fall through */ | |
1180 | ||
1181 | common_error: | |
1182 | if (!((*info->callbacks->warning) | |
1183 | (info, msg, name, input_bfd, input_section, | |
1184 | rel->r_offset))) | |
1185 | return FALSE; | |
1186 | break; | |
1187 | } | |
1188 | } | |
1189 | } | |
1190 | ||
1191 | return TRUE; | |
1192 | } | |
1193 | ||
1194 | static asection * | |
1195 | lm32_elf_gc_mark_hook (asection *sec, | |
1196 | struct bfd_link_info *info, | |
1197 | Elf_Internal_Rela *rel, | |
1198 | struct elf_link_hash_entry *h, | |
1199 | Elf_Internal_Sym *sym) | |
1200 | { | |
1201 | if (h != NULL) | |
1202 | switch (ELF32_R_TYPE (rel->r_info)) | |
1203 | { | |
1204 | case R_LM32_GNU_VTINHERIT: | |
1205 | case R_LM32_GNU_VTENTRY: | |
1206 | return NULL; | |
1207 | } | |
1208 | ||
1209 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
1210 | } | |
1211 | ||
1212 | static bfd_boolean | |
1213 | lm32_elf_gc_sweep_hook (bfd *abfd, | |
1214 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1215 | asection *sec, | |
1216 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
1217 | { | |
1218 | /* Update the got entry reference counts for the section being removed. */ | |
1219 | Elf_Internal_Shdr *symtab_hdr; | |
1220 | struct elf_link_hash_entry **sym_hashes; | |
1221 | bfd_signed_vma *local_got_refcounts; | |
1222 | const Elf_Internal_Rela *rel, *relend; | |
1223 | ||
1224 | elf_section_data (sec)->local_dynrel = NULL; | |
1225 | ||
1226 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1227 | sym_hashes = elf_sym_hashes (abfd); | |
1228 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1229 | ||
1230 | relend = relocs + sec->reloc_count; | |
1231 | for (rel = relocs; rel < relend; rel++) | |
1232 | { | |
1233 | unsigned long r_symndx; | |
1234 | struct elf_link_hash_entry *h = NULL; | |
1235 | ||
1236 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1237 | if (r_symndx >= symtab_hdr->sh_info) | |
1238 | { | |
1239 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1240 | while (h->root.type == bfd_link_hash_indirect | |
1241 | || h->root.type == bfd_link_hash_warning) | |
1242 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1243 | } | |
1244 | ||
1245 | switch (ELF32_R_TYPE (rel->r_info)) | |
1246 | { | |
1247 | case R_LM32_16_GOT: | |
1248 | if (h != NULL) | |
1249 | { | |
1250 | if (h->got.refcount > 0) | |
1251 | h->got.refcount--; | |
1252 | } | |
1253 | else | |
1254 | { | |
1255 | if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) | |
1256 | local_got_refcounts[r_symndx]--; | |
1257 | } | |
1258 | break; | |
1259 | ||
1260 | default: | |
1261 | break; | |
1262 | } | |
1263 | } | |
1264 | return TRUE; | |
1265 | } | |
1266 | ||
1267 | /* Look through the relocs for a section during the first phase. */ | |
1268 | ||
1269 | static bfd_boolean | |
1270 | lm32_elf_check_relocs (bfd *abfd, | |
1271 | struct bfd_link_info *info, | |
1272 | asection *sec, | |
1273 | const Elf_Internal_Rela *relocs) | |
1274 | { | |
1275 | Elf_Internal_Shdr *symtab_hdr; | |
1276 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
1277 | const Elf_Internal_Rela *rel; | |
1278 | const Elf_Internal_Rela *rel_end; | |
1279 | struct elf_lm32_link_hash_table *htab; | |
1280 | bfd *dynobj; | |
84e94c90 | 1281 | |
0e1862bb | 1282 | if (bfd_link_relocatable (info)) |
84e94c90 NC |
1283 | return TRUE; |
1284 | ||
84e94c90 NC |
1285 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1286 | sym_hashes = elf_sym_hashes (abfd); | |
1287 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); | |
1288 | if (!elf_bad_symtab (abfd)) | |
1289 | sym_hashes_end -= symtab_hdr->sh_info; | |
1290 | ||
1291 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1292 | if (htab == NULL) |
1293 | return FALSE; | |
1294 | ||
84e94c90 | 1295 | dynobj = htab->root.dynobj; |
84e94c90 NC |
1296 | |
1297 | rel_end = relocs + sec->reloc_count; | |
1298 | for (rel = relocs; rel < rel_end; rel++) | |
1299 | { | |
1300 | int r_type; | |
1301 | struct elf_link_hash_entry *h; | |
1302 | unsigned long r_symndx; | |
1303 | ||
1304 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1305 | r_type = ELF32_R_TYPE (rel->r_info); | |
1306 | if (r_symndx < symtab_hdr->sh_info) | |
1307 | h = NULL; | |
1308 | else | |
1309 | { | |
1310 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1311 | while (h->root.type == bfd_link_hash_indirect | |
1312 | || h->root.type == bfd_link_hash_warning) | |
1313 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
81fbe831 AM |
1314 | |
1315 | /* PR15323, ref flags aren't set for references in the same | |
1316 | object. */ | |
1317 | h->root.non_ir_ref = 1; | |
84e94c90 NC |
1318 | } |
1319 | ||
1320 | /* Some relocs require a global offset table. */ | |
1321 | if (htab->sgot == NULL) | |
1322 | { | |
1323 | switch (r_type) | |
1324 | { | |
1325 | case R_LM32_16_GOT: | |
1326 | case R_LM32_GOTOFF_HI16: | |
1327 | case R_LM32_GOTOFF_LO16: | |
1328 | if (dynobj == NULL) | |
1329 | htab->root.dynobj = dynobj = abfd; | |
1330 | if (! create_got_section (dynobj, info)) | |
1331 | return FALSE; | |
1332 | break; | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | /* Some relocs require a rofixup table. */ | |
1337 | if (IS_FDPIC (abfd)) | |
1338 | { | |
1339 | switch (r_type) | |
1340 | { | |
1341 | case R_LM32_32: | |
1342 | /* FDPIC requires a GOT if there is a .rofixup section | |
1343 | (Normal ELF doesn't). */ | |
1344 | if (dynobj == NULL) | |
1345 | htab->root.dynobj = dynobj = abfd; | |
1346 | if (! create_got_section (dynobj, info)) | |
1347 | return FALSE; | |
1348 | /* Create .rofixup section */ | |
1349 | if (htab->sfixup32 == NULL) | |
1350 | { | |
3d4d4302 | 1351 | if (! create_rofixup_section (dynobj, info)) |
84e94c90 NC |
1352 | return FALSE; |
1353 | } | |
1354 | break; | |
1355 | case R_LM32_16_GOT: | |
1356 | case R_LM32_GOTOFF_HI16: | |
1357 | case R_LM32_GOTOFF_LO16: | |
1358 | /* Create .rofixup section. */ | |
1359 | if (htab->sfixup32 == NULL) | |
1360 | { | |
3d4d4302 AM |
1361 | if (dynobj == NULL) |
1362 | htab->root.dynobj = dynobj = abfd; | |
1363 | if (! create_rofixup_section (dynobj, info)) | |
84e94c90 NC |
1364 | return FALSE; |
1365 | } | |
1366 | break; | |
1367 | } | |
1368 | } | |
1369 | ||
1370 | switch (r_type) | |
1371 | { | |
1372 | case R_LM32_16_GOT: | |
1373 | if (h != NULL) | |
1374 | h->got.refcount += 1; | |
1375 | else | |
1376 | { | |
1377 | bfd_signed_vma *local_got_refcounts; | |
1378 | ||
1379 | /* This is a global offset table entry for a local symbol. */ | |
1380 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1381 | if (local_got_refcounts == NULL) | |
1382 | { | |
1383 | bfd_size_type size; | |
1384 | ||
1385 | size = symtab_hdr->sh_info; | |
1386 | size *= sizeof (bfd_signed_vma); | |
1387 | local_got_refcounts = bfd_zalloc (abfd, size); | |
1388 | if (local_got_refcounts == NULL) | |
1389 | return FALSE; | |
1390 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1391 | } | |
1392 | local_got_refcounts[r_symndx] += 1; | |
1393 | } | |
1394 | break; | |
1395 | ||
1396 | /* This relocation describes the C++ object vtable hierarchy. | |
1397 | Reconstruct it for later use during GC. */ | |
1398 | case R_LM32_GNU_VTINHERIT: | |
1399 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1400 | return FALSE; | |
1401 | break; | |
1402 | ||
1403 | /* This relocation describes which C++ vtable entries are actually | |
1404 | used. Record for later use during GC. */ | |
1405 | case R_LM32_GNU_VTENTRY: | |
1406 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
1407 | return FALSE; | |
1408 | break; | |
1409 | ||
1410 | } | |
1411 | } | |
1412 | ||
1413 | return TRUE; | |
1414 | } | |
1415 | ||
1416 | /* Finish up the dynamic sections. */ | |
1417 | ||
1418 | static bfd_boolean | |
1419 | lm32_elf_finish_dynamic_sections (bfd *output_bfd, | |
1420 | struct bfd_link_info *info) | |
1421 | { | |
1422 | struct elf_lm32_link_hash_table *htab; | |
1423 | bfd *dynobj; | |
1424 | asection *sdyn; | |
1425 | asection *sgot; | |
1426 | ||
1427 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1428 | if (htab == NULL) |
1429 | return FALSE; | |
1430 | ||
84e94c90 NC |
1431 | dynobj = htab->root.dynobj; |
1432 | ||
1433 | sgot = htab->sgotplt; | |
3d4d4302 | 1434 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
84e94c90 NC |
1435 | |
1436 | if (htab->root.dynamic_sections_created) | |
1437 | { | |
1438 | asection *splt; | |
1439 | Elf32_External_Dyn *dyncon, *dynconend; | |
1440 | ||
1441 | BFD_ASSERT (sgot != NULL && sdyn != NULL); | |
1442 | ||
1443 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1444 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
1445 | ||
1446 | for (; dyncon < dynconend; dyncon++) | |
1447 | { | |
1448 | Elf_Internal_Dyn dyn; | |
84e94c90 NC |
1449 | asection *s; |
1450 | ||
1451 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1452 | ||
1453 | switch (dyn.d_tag) | |
1454 | { | |
1455 | default: | |
1456 | break; | |
1457 | ||
1458 | case DT_PLTGOT: | |
84e94c90 NC |
1459 | s = htab->sgot->output_section; |
1460 | goto get_vma; | |
1461 | case DT_JMPREL: | |
84e94c90 NC |
1462 | s = htab->srelplt->output_section; |
1463 | get_vma: | |
1464 | BFD_ASSERT (s != NULL); | |
1465 | dyn.d_un.d_ptr = s->vma; | |
1466 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1467 | break; | |
1468 | ||
1469 | case DT_PLTRELSZ: | |
1470 | s = htab->srelplt->output_section; | |
1471 | BFD_ASSERT (s != NULL); | |
1472 | dyn.d_un.d_val = s->size; | |
1473 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1474 | break; | |
1475 | ||
1476 | case DT_RELASZ: | |
1477 | /* My reading of the SVR4 ABI indicates that the | |
1478 | procedure linkage table relocs (DT_JMPREL) should be | |
1479 | included in the overall relocs (DT_RELA). This is | |
1480 | what Solaris does. However, UnixWare can not handle | |
1481 | that case. Therefore, we override the DT_RELASZ entry | |
1482 | here to make it not include the JMPREL relocs. Since | |
1483 | the linker script arranges for .rela.plt to follow all | |
1484 | other relocation sections, we don't have to worry | |
1485 | about changing the DT_RELA entry. */ | |
1486 | if (htab->srelplt != NULL) | |
1487 | { | |
1488 | s = htab->srelplt->output_section; | |
1489 | dyn.d_un.d_val -= s->size; | |
1490 | } | |
1491 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1492 | break; | |
1493 | } | |
1494 | } | |
1495 | ||
1496 | /* Fill in the first entry in the procedure linkage table. */ | |
1497 | splt = htab->splt; | |
1498 | if (splt && splt->size > 0) | |
1499 | { | |
0e1862bb | 1500 | if (bfd_link_pic (info)) |
84e94c90 NC |
1501 | { |
1502 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); | |
1503 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); | |
1504 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); | |
1505 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); | |
1506 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); | |
1507 | } | |
1508 | else | |
1509 | { | |
1510 | unsigned long addr; | |
1511 | /* addr = .got + 4 */ | |
1512 | addr = sgot->output_section->vma + sgot->output_offset + 4; | |
1513 | bfd_put_32 (output_bfd, | |
1514 | PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), | |
1515 | splt->contents); | |
1516 | bfd_put_32 (output_bfd, | |
1517 | PLT0_ENTRY_WORD1 | (addr & 0xffff), | |
1518 | splt->contents + 4); | |
1519 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); | |
1520 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); | |
1521 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); | |
1522 | } | |
1523 | ||
1524 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1525 | PLT_ENTRY_SIZE; | |
1526 | } | |
1527 | } | |
1528 | ||
1529 | /* Fill in the first three entries in the global offset table. */ | |
1530 | if (sgot && sgot->size > 0) | |
1531 | { | |
1532 | if (sdyn == NULL) | |
1533 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1534 | else | |
1535 | bfd_put_32 (output_bfd, | |
1536 | sdyn->output_section->vma + sdyn->output_offset, | |
1537 | sgot->contents); | |
1538 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
1539 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
1540 | ||
1541 | /* FIXME: This can be null if create_dynamic_sections wasn't called. */ | |
1542 | if (elf_section_data (sgot->output_section) != NULL) | |
1543 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1544 | } | |
1545 | ||
1546 | if (lm32fdpic_fixup32_section (info)) | |
1547 | { | |
1548 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; | |
1549 | bfd_vma got_value = hgot->root.u.def.value | |
1550 | + hgot->root.u.def.section->output_section->vma | |
1551 | + hgot->root.u.def.section->output_offset; | |
1552 | struct bfd_link_hash_entry *hend; | |
1553 | ||
1554 | /* Last entry is pointer to GOT. */ | |
1555 | _lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value); | |
1556 | ||
1557 | /* Check we wrote enough entries. */ | |
1558 | if (lm32fdpic_fixup32_section (info)->size | |
1559 | != (lm32fdpic_fixup32_section (info)->reloc_count * 4)) | |
1560 | { | |
1561 | (*_bfd_error_handler) | |
1562 | ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d", | |
1563 | lm32fdpic_fixup32_section (info)->size/4, | |
1564 | lm32fdpic_fixup32_section (info)->reloc_count); | |
1565 | return FALSE; | |
1566 | } | |
1567 | ||
1568 | hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", | |
1569 | FALSE, FALSE, TRUE); | |
1570 | if (hend | |
1571 | && (hend->type == bfd_link_hash_defined | |
1572 | || hend->type == bfd_link_hash_defweak)) | |
1573 | { | |
1574 | bfd_vma value = | |
1575 | lm32fdpic_fixup32_section (info)->output_section->vma | |
1576 | + lm32fdpic_fixup32_section (info)->output_offset | |
1577 | + lm32fdpic_fixup32_section (info)->size | |
1578 | - hend->u.def.section->output_section->vma | |
1579 | - hend->u.def.section->output_offset; | |
1580 | BFD_ASSERT (hend->u.def.value == value); | |
1581 | if (hend->u.def.value != value) | |
1582 | { | |
1583 | (*_bfd_error_handler) | |
1584 | ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value); | |
1585 | return FALSE; | |
1586 | } | |
1587 | } | |
1588 | } | |
1589 | ||
1590 | return TRUE; | |
1591 | } | |
1592 | ||
1593 | /* Finish up dynamic symbol handling. We set the contents of various | |
1594 | dynamic sections here. */ | |
1595 | ||
1596 | static bfd_boolean | |
1597 | lm32_elf_finish_dynamic_symbol (bfd *output_bfd, | |
1598 | struct bfd_link_info *info, | |
1599 | struct elf_link_hash_entry *h, | |
1600 | Elf_Internal_Sym *sym) | |
1601 | { | |
1602 | struct elf_lm32_link_hash_table *htab; | |
84e94c90 NC |
1603 | bfd_byte *loc; |
1604 | ||
1605 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1606 | if (htab == NULL) |
1607 | return FALSE; | |
1608 | ||
84e94c90 NC |
1609 | if (h->plt.offset != (bfd_vma) -1) |
1610 | { | |
1611 | asection *splt; | |
1612 | asection *sgot; | |
1613 | asection *srela; | |
1614 | ||
1615 | bfd_vma plt_index; | |
1616 | bfd_vma got_offset; | |
1617 | Elf_Internal_Rela rela; | |
1618 | ||
1619 | /* This symbol has an entry in the procedure linkage table. Set | |
1620 | it up. */ | |
1621 | BFD_ASSERT (h->dynindx != -1); | |
1622 | ||
1623 | splt = htab->splt; | |
1624 | sgot = htab->sgotplt; | |
1625 | srela = htab->srelplt; | |
1626 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1627 | ||
1628 | /* Get the index in the procedure linkage table which | |
1629 | corresponds to this symbol. This is the index of this symbol | |
1630 | in all the symbols for which we are making plt entries. The | |
1631 | first entry in the procedure linkage table is reserved. */ | |
1632 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1633 | ||
1634 | /* Get the offset into the .got table of the entry that | |
1635 | corresponds to this function. Each .got entry is 4 bytes. | |
1636 | The first three are reserved. */ | |
1637 | got_offset = (plt_index + 3) * 4; | |
1638 | ||
1639 | /* Fill in the entry in the procedure linkage table. */ | |
0e1862bb | 1640 | if (! bfd_link_pic (info)) |
84e94c90 NC |
1641 | { |
1642 | /* TODO */ | |
1643 | } | |
1644 | else | |
1645 | { | |
1646 | /* TODO */ | |
1647 | } | |
1648 | ||
1649 | /* Fill in the entry in the global offset table. */ | |
1650 | bfd_put_32 (output_bfd, | |
1651 | (splt->output_section->vma | |
1652 | + splt->output_offset | |
1653 | + h->plt.offset | |
1654 | + 12), /* same offset */ | |
1655 | sgot->contents + got_offset); | |
1656 | ||
1657 | /* Fill in the entry in the .rela.plt section. */ | |
1658 | rela.r_offset = (sgot->output_section->vma | |
1659 | + sgot->output_offset | |
1660 | + got_offset); | |
1661 | rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT); | |
1662 | rela.r_addend = 0; | |
1663 | loc = srela->contents; | |
1664 | loc += plt_index * sizeof (Elf32_External_Rela); | |
1665 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
1666 | ||
1667 | if (!h->def_regular) | |
1668 | { | |
1669 | /* Mark the symbol as undefined, rather than as defined in | |
1670 | the .plt section. Leave the value alone. */ | |
1671 | sym->st_shndx = SHN_UNDEF; | |
1672 | } | |
1673 | ||
1674 | } | |
1675 | ||
1676 | if (h->got.offset != (bfd_vma) -1) | |
1677 | { | |
1678 | asection *sgot; | |
1679 | asection *srela; | |
1680 | Elf_Internal_Rela rela; | |
1681 | ||
1682 | /* This symbol has an entry in the global offset table. Set it | |
1683 | up. */ | |
1684 | sgot = htab->sgot; | |
1685 | srela = htab->srelgot; | |
1686 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1687 | ||
1688 | rela.r_offset = (sgot->output_section->vma | |
1689 | + sgot->output_offset | |
1690 | + (h->got.offset &~ 1)); | |
1691 | ||
1692 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1693 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1694 | the symbol was forced to be local because of a version file. | |
1695 | The entry in the global offset table will already have been | |
1696 | initialized in the relocate_section function. */ | |
0e1862bb | 1697 | if (bfd_link_pic (info) |
84e94c90 NC |
1698 | && (info->symbolic |
1699 | || h->dynindx == -1 | |
1700 | || h->forced_local) | |
1701 | && h->def_regular) | |
1702 | { | |
1703 | rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE); | |
1704 | rela.r_addend = (h->root.u.def.value | |
1705 | + h->root.u.def.section->output_section->vma | |
1706 | + h->root.u.def.section->output_offset); | |
1707 | } | |
1708 | else | |
1709 | { | |
1710 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
1711 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
1712 | rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT); | |
1713 | rela.r_addend = 0; | |
1714 | } | |
1715 | ||
1716 | loc = srela->contents; | |
1717 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); | |
1718 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
1719 | ++srela->reloc_count; | |
1720 | } | |
1721 | ||
1722 | if (h->needs_copy) | |
1723 | { | |
1724 | asection *s; | |
1725 | Elf_Internal_Rela rela; | |
1726 | ||
1727 | /* This symbols needs a copy reloc. Set it up. */ | |
1728 | BFD_ASSERT (h->dynindx != -1 | |
1729 | && (h->root.type == bfd_link_hash_defined | |
1730 | || h->root.type == bfd_link_hash_defweak)); | |
1731 | ||
3d4d4302 | 1732 | s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); |
84e94c90 NC |
1733 | BFD_ASSERT (s != NULL); |
1734 | ||
1735 | rela.r_offset = (h->root.u.def.value | |
1736 | + h->root.u.def.section->output_section->vma | |
1737 | + h->root.u.def.section->output_offset); | |
1738 | rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY); | |
1739 | rela.r_addend = 0; | |
1740 | loc = s->contents; | |
1741 | loc += s->reloc_count * sizeof (Elf32_External_Rela); | |
1742 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
1743 | ++s->reloc_count; | |
1744 | } | |
1745 | ||
1746 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 1747 | if (h == htab->root.hdynamic || h == htab->root.hgot) |
84e94c90 NC |
1748 | sym->st_shndx = SHN_ABS; |
1749 | ||
1750 | return TRUE; | |
1751 | } | |
1752 | ||
1753 | static enum elf_reloc_type_class | |
7e612e98 AM |
1754 | lm32_elf_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, |
1755 | const asection *rel_sec ATTRIBUTE_UNUSED, | |
1756 | const Elf_Internal_Rela *rela) | |
84e94c90 NC |
1757 | { |
1758 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
1759 | { | |
1760 | case R_LM32_RELATIVE: return reloc_class_relative; | |
1761 | case R_LM32_JMP_SLOT: return reloc_class_plt; | |
1762 | case R_LM32_COPY: return reloc_class_copy; | |
1763 | default: return reloc_class_normal; | |
1764 | } | |
1765 | } | |
1766 | ||
1767 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1768 | regular object. The current definition is in some section of the | |
1769 | dynamic object, but we're not including those sections. We have to | |
1770 | change the definition to something the rest of the link can | |
1771 | understand. */ | |
1772 | ||
1773 | static bfd_boolean | |
1774 | lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
1775 | struct elf_link_hash_entry *h) | |
1776 | { | |
1777 | struct elf_lm32_link_hash_table *htab; | |
1778 | struct elf_lm32_link_hash_entry *eh; | |
1779 | struct elf_lm32_dyn_relocs *p; | |
1780 | bfd *dynobj; | |
1781 | asection *s; | |
1782 | ||
1783 | dynobj = elf_hash_table (info)->dynobj; | |
1784 | ||
1785 | /* Make sure we know what is going on here. */ | |
1786 | BFD_ASSERT (dynobj != NULL | |
1787 | && (h->needs_plt | |
1788 | || h->u.weakdef != NULL | |
1789 | || (h->def_dynamic | |
1790 | && h->ref_regular | |
1791 | && !h->def_regular))); | |
1792 | ||
1793 | /* If this is a function, put it in the procedure linkage table. We | |
1794 | will fill in the contents of the procedure linkage table later, | |
1795 | when we know the address of the .got section. */ | |
1796 | if (h->type == STT_FUNC | |
1797 | || h->needs_plt) | |
1798 | { | |
0e1862bb | 1799 | if (! bfd_link_pic (info) |
84e94c90 NC |
1800 | && !h->def_dynamic |
1801 | && !h->ref_dynamic | |
1802 | && h->root.type != bfd_link_hash_undefweak | |
1803 | && h->root.type != bfd_link_hash_undefined) | |
1804 | { | |
1805 | /* This case can occur if we saw a PLT reloc in an input | |
1806 | file, but the symbol was never referred to by a dynamic | |
1807 | object. In such a case, we don't actually need to build | |
1808 | a procedure linkage table, and we can just do a PCREL | |
1809 | reloc instead. */ | |
1810 | h->plt.offset = (bfd_vma) -1; | |
1811 | h->needs_plt = 0; | |
1812 | } | |
1813 | ||
1814 | return TRUE; | |
1815 | } | |
1816 | else | |
1817 | h->plt.offset = (bfd_vma) -1; | |
1818 | ||
1819 | /* If this is a weak symbol, and there is a real definition, the | |
1820 | processor independent code will have arranged for us to see the | |
1821 | real definition first, and we can just use the same value. */ | |
1822 | if (h->u.weakdef != NULL) | |
1823 | { | |
1824 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
1825 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1826 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1827 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
1828 | return TRUE; | |
1829 | } | |
1830 | ||
1831 | /* This is a reference to a symbol defined by a dynamic object which | |
1832 | is not a function. */ | |
1833 | ||
1834 | /* If we are creating a shared library, we must presume that the | |
1835 | only references to the symbol are via the global offset table. | |
1836 | For such cases we need not do anything here; the relocations will | |
1837 | be handled correctly by relocate_section. */ | |
0e1862bb | 1838 | if (bfd_link_pic (info)) |
84e94c90 NC |
1839 | return TRUE; |
1840 | ||
1841 | /* If there are no references to this symbol that do not use the | |
1842 | GOT, we don't need to generate a copy reloc. */ | |
1843 | if (!h->non_got_ref) | |
1844 | return TRUE; | |
1845 | ||
1846 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
1847 | if (info->nocopyreloc) | |
1848 | { | |
1849 | h->non_got_ref = 0; | |
1850 | return TRUE; | |
1851 | } | |
1852 | ||
1853 | eh = (struct elf_lm32_link_hash_entry *) h; | |
1854 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1855 | { | |
1856 | s = p->sec->output_section; | |
1857 | if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) | |
1858 | break; | |
1859 | } | |
1860 | ||
1861 | /* If we didn't find any dynamic relocs in sections which needs the | |
1862 | copy reloc, then we'll be keeping the dynamic relocs and avoiding | |
1863 | the copy reloc. */ | |
1864 | if (p == NULL) | |
1865 | { | |
1866 | h->non_got_ref = 0; | |
1867 | return TRUE; | |
1868 | } | |
1869 | ||
84e94c90 NC |
1870 | /* We must allocate the symbol in our .dynbss section, which will |
1871 | become part of the .bss section of the executable. There will be | |
1872 | an entry for this symbol in the .dynsym section. The dynamic | |
1873 | object will contain position independent code, so all references | |
1874 | from the dynamic object to this symbol will go through the global | |
1875 | offset table. The dynamic linker will use the .dynsym entry to | |
1876 | determine the address it must put in the global offset table, so | |
1877 | both the dynamic object and the regular object will refer to the | |
1878 | same memory location for the variable. */ | |
1879 | ||
1880 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1881 | if (htab == NULL) |
1882 | return FALSE; | |
1883 | ||
84e94c90 NC |
1884 | s = htab->sdynbss; |
1885 | BFD_ASSERT (s != NULL); | |
1886 | ||
1887 | /* We must generate a R_LM32_COPY reloc to tell the dynamic linker | |
1888 | to copy the initial value out of the dynamic object and into the | |
1889 | runtime process image. We need to remember the offset into the | |
1890 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 1891 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
84e94c90 NC |
1892 | { |
1893 | asection *srel; | |
1894 | ||
1895 | srel = htab->srelbss; | |
1896 | BFD_ASSERT (srel != NULL); | |
1897 | srel->size += sizeof (Elf32_External_Rela); | |
1898 | h->needs_copy = 1; | |
1899 | } | |
1900 | ||
6cabe1ea | 1901 | return _bfd_elf_adjust_dynamic_copy (info, h, s); |
84e94c90 NC |
1902 | } |
1903 | ||
1904 | /* Allocate space in .plt, .got and associated reloc sections for | |
1905 | dynamic relocs. */ | |
1906 | ||
1907 | static bfd_boolean | |
1908 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) | |
1909 | { | |
1910 | struct bfd_link_info *info; | |
1911 | struct elf_lm32_link_hash_table *htab; | |
1912 | struct elf_lm32_link_hash_entry *eh; | |
1913 | struct elf_lm32_dyn_relocs *p; | |
1914 | ||
1915 | if (h->root.type == bfd_link_hash_indirect) | |
1916 | return TRUE; | |
1917 | ||
84e94c90 NC |
1918 | info = (struct bfd_link_info *) inf; |
1919 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1920 | if (htab == NULL) |
1921 | return FALSE; | |
84e94c90 NC |
1922 | |
1923 | eh = (struct elf_lm32_link_hash_entry *) h; | |
1924 | ||
1925 | if (htab->root.dynamic_sections_created | |
1926 | && h->plt.refcount > 0) | |
1927 | { | |
1928 | /* Make sure this symbol is output as a dynamic symbol. | |
1929 | Undefined weak syms won't yet be marked as dynamic. */ | |
1930 | if (h->dynindx == -1 | |
1931 | && !h->forced_local) | |
1932 | { | |
1933 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1934 | return FALSE; | |
1935 | } | |
1936 | ||
0e1862bb | 1937 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h)) |
84e94c90 NC |
1938 | { |
1939 | asection *s = htab->splt; | |
1940 | ||
1941 | /* If this is the first .plt entry, make room for the special | |
1942 | first entry. */ | |
1943 | if (s->size == 0) | |
1944 | s->size += PLT_ENTRY_SIZE; | |
1945 | ||
1946 | h->plt.offset = s->size; | |
1947 | ||
1948 | /* If this symbol is not defined in a regular file, and we are | |
1949 | not generating a shared library, then set the symbol to this | |
1950 | location in the .plt. This is required to make function | |
1951 | pointers compare as equal between the normal executable and | |
1952 | the shared library. */ | |
0e1862bb | 1953 | if (! bfd_link_pic (info) |
84e94c90 NC |
1954 | && !h->def_regular) |
1955 | { | |
1956 | h->root.u.def.section = s; | |
1957 | h->root.u.def.value = h->plt.offset; | |
1958 | } | |
1959 | ||
1960 | /* Make room for this entry. */ | |
1961 | s->size += PLT_ENTRY_SIZE; | |
1962 | ||
1963 | /* We also need to make an entry in the .got.plt section, which | |
1964 | will be placed in the .got section by the linker script. */ | |
1965 | htab->sgotplt->size += 4; | |
1966 | ||
1967 | /* We also need to make an entry in the .rel.plt section. */ | |
1968 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
1969 | } | |
1970 | else | |
1971 | { | |
1972 | h->plt.offset = (bfd_vma) -1; | |
1973 | h->needs_plt = 0; | |
1974 | } | |
1975 | } | |
1976 | else | |
1977 | { | |
1978 | h->plt.offset = (bfd_vma) -1; | |
1979 | h->needs_plt = 0; | |
1980 | } | |
1981 | ||
1982 | if (h->got.refcount > 0) | |
1983 | { | |
1984 | asection *s; | |
1985 | bfd_boolean dyn; | |
1986 | ||
1987 | /* Make sure this symbol is output as a dynamic symbol. | |
1988 | Undefined weak syms won't yet be marked as dynamic. */ | |
1989 | if (h->dynindx == -1 | |
1990 | && !h->forced_local) | |
1991 | { | |
1992 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1993 | return FALSE; | |
1994 | } | |
1995 | ||
1996 | s = htab->sgot; | |
1997 | ||
1998 | h->got.offset = s->size; | |
1999 | s->size += 4; | |
2000 | dyn = htab->root.dynamic_sections_created; | |
0e1862bb | 2001 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h)) |
84e94c90 NC |
2002 | htab->srelgot->size += sizeof (Elf32_External_Rela); |
2003 | } | |
2004 | else | |
2005 | h->got.offset = (bfd_vma) -1; | |
2006 | ||
2007 | if (eh->dyn_relocs == NULL) | |
2008 | return TRUE; | |
2009 | ||
2010 | /* In the shared -Bsymbolic case, discard space allocated for | |
2011 | dynamic pc-relative relocs against symbols which turn out to be | |
2012 | defined in regular objects. For the normal shared case, discard | |
2013 | space for pc-relative relocs that have become local due to symbol | |
2014 | visibility changes. */ | |
2015 | ||
0e1862bb | 2016 | if (bfd_link_pic (info)) |
84e94c90 NC |
2017 | { |
2018 | if (h->def_regular | |
2019 | && (h->forced_local | |
2020 | || info->symbolic)) | |
2021 | { | |
2022 | struct elf_lm32_dyn_relocs **pp; | |
2023 | ||
2024 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
2025 | { | |
2026 | p->count -= p->pc_count; | |
2027 | p->pc_count = 0; | |
2028 | if (p->count == 0) | |
2029 | *pp = p->next; | |
2030 | else | |
2031 | pp = &p->next; | |
2032 | } | |
2033 | } | |
2034 | ||
2035 | /* Also discard relocs on undefined weak syms with non-default | |
2036 | visibility. */ | |
2037 | if (eh->dyn_relocs != NULL | |
2038 | && h->root.type == bfd_link_hash_undefweak) | |
2039 | { | |
2040 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2041 | eh->dyn_relocs = NULL; | |
2042 | ||
2043 | /* Make sure undefined weak symbols are output as a dynamic | |
2044 | symbol in PIEs. */ | |
2045 | else if (h->dynindx == -1 | |
2046 | && !h->forced_local) | |
2047 | { | |
2048 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2049 | return FALSE; | |
2050 | } | |
2051 | } | |
2052 | } | |
2053 | else | |
2054 | { | |
2055 | /* For the non-shared case, discard space for relocs against | |
2056 | symbols which turn out to need copy relocs or are not | |
2057 | dynamic. */ | |
2058 | ||
2059 | if (!h->non_got_ref | |
2060 | && ((h->def_dynamic | |
2061 | && !h->def_regular) | |
2062 | || (htab->root.dynamic_sections_created | |
2063 | && (h->root.type == bfd_link_hash_undefweak | |
2064 | || h->root.type == bfd_link_hash_undefined)))) | |
2065 | { | |
2066 | /* Make sure this symbol is output as a dynamic symbol. | |
2067 | Undefined weak syms won't yet be marked as dynamic. */ | |
2068 | if (h->dynindx == -1 | |
2069 | && !h->forced_local) | |
2070 | { | |
2071 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2072 | return FALSE; | |
2073 | } | |
2074 | ||
2075 | /* If that succeeded, we know we'll be keeping all the | |
2076 | relocs. */ | |
2077 | if (h->dynindx != -1) | |
2078 | goto keep; | |
2079 | } | |
2080 | ||
2081 | eh->dyn_relocs = NULL; | |
2082 | ||
2083 | keep: ; | |
2084 | } | |
2085 | ||
2086 | /* Finally, allocate space. */ | |
2087 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2088 | { | |
2089 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
2090 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
2091 | } | |
2092 | ||
2093 | return TRUE; | |
2094 | } | |
2095 | ||
2096 | /* Find any dynamic relocs that apply to read-only sections. */ | |
2097 | ||
2098 | static bfd_boolean | |
2099 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) | |
2100 | { | |
2101 | struct elf_lm32_link_hash_entry *eh; | |
2102 | struct elf_lm32_dyn_relocs *p; | |
2103 | ||
84e94c90 NC |
2104 | eh = (struct elf_lm32_link_hash_entry *) h; |
2105 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2106 | { | |
2107 | asection *s = p->sec->output_section; | |
2108 | ||
2109 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2110 | { | |
2111 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2112 | ||
2113 | info->flags |= DF_TEXTREL; | |
2114 | ||
2115 | /* Not an error, just cut short the traversal. */ | |
2116 | return FALSE; | |
2117 | } | |
2118 | } | |
2119 | return TRUE; | |
2120 | } | |
2121 | ||
2122 | /* Set the sizes of the dynamic sections. */ | |
2123 | ||
2124 | static bfd_boolean | |
2125 | lm32_elf_size_dynamic_sections (bfd *output_bfd, | |
2126 | struct bfd_link_info *info) | |
2127 | { | |
2128 | struct elf_lm32_link_hash_table *htab; | |
2129 | bfd *dynobj; | |
2130 | asection *s; | |
2131 | bfd_boolean relocs; | |
2132 | bfd *ibfd; | |
2133 | ||
2134 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
2135 | if (htab == NULL) |
2136 | return FALSE; | |
2137 | ||
84e94c90 NC |
2138 | dynobj = htab->root.dynobj; |
2139 | BFD_ASSERT (dynobj != NULL); | |
2140 | ||
2141 | if (htab->root.dynamic_sections_created) | |
2142 | { | |
2143 | /* Set the contents of the .interp section to the interpreter. */ | |
9b8b325a | 2144 | if (bfd_link_executable (info) && !info->nointerp) |
84e94c90 | 2145 | { |
3d4d4302 | 2146 | s = bfd_get_linker_section (dynobj, ".interp"); |
84e94c90 NC |
2147 | BFD_ASSERT (s != NULL); |
2148 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2149 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2150 | } | |
2151 | } | |
2152 | ||
2153 | /* Set up .got offsets for local syms, and space for local dynamic | |
2154 | relocs. */ | |
c72f2fb2 | 2155 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
84e94c90 NC |
2156 | { |
2157 | bfd_signed_vma *local_got; | |
2158 | bfd_signed_vma *end_local_got; | |
2159 | bfd_size_type locsymcount; | |
2160 | Elf_Internal_Shdr *symtab_hdr; | |
2161 | asection *srel; | |
2162 | ||
2163 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
2164 | continue; | |
2165 | ||
2166 | for (s = ibfd->sections; s != NULL; s = s->next) | |
2167 | { | |
2168 | struct elf_lm32_dyn_relocs *p; | |
2169 | ||
2170 | for (p = ((struct elf_lm32_dyn_relocs *) | |
2171 | elf_section_data (s)->local_dynrel); | |
2172 | p != NULL; | |
2173 | p = p->next) | |
2174 | { | |
2175 | if (! bfd_is_abs_section (p->sec) | |
2176 | && bfd_is_abs_section (p->sec->output_section)) | |
2177 | { | |
2178 | /* Input section has been discarded, either because | |
2179 | it is a copy of a linkonce section or due to | |
2180 | linker script /DISCARD/, so we'll be discarding | |
2181 | the relocs too. */ | |
2182 | } | |
2183 | else if (p->count != 0) | |
2184 | { | |
2185 | srel = elf_section_data (p->sec)->sreloc; | |
2186 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
2187 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
2188 | info->flags |= DF_TEXTREL; | |
2189 | } | |
2190 | } | |
2191 | } | |
2192 | ||
2193 | local_got = elf_local_got_refcounts (ibfd); | |
2194 | if (!local_got) | |
2195 | continue; | |
2196 | ||
2197 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2198 | locsymcount = symtab_hdr->sh_info; | |
2199 | end_local_got = local_got + locsymcount; | |
2200 | s = htab->sgot; | |
2201 | srel = htab->srelgot; | |
2202 | for (; local_got < end_local_got; ++local_got) | |
2203 | { | |
2204 | if (*local_got > 0) | |
2205 | { | |
2206 | *local_got = s->size; | |
2207 | s->size += 4; | |
0e1862bb | 2208 | if (bfd_link_pic (info)) |
84e94c90 NC |
2209 | srel->size += sizeof (Elf32_External_Rela); |
2210 | } | |
2211 | else | |
2212 | *local_got = (bfd_vma) -1; | |
2213 | } | |
2214 | } | |
2215 | ||
2216 | /* Allocate global sym .plt and .got entries, and space for global | |
2217 | sym dynamic relocs. */ | |
2218 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); | |
2219 | ||
2220 | /* We now have determined the sizes of the various dynamic sections. | |
2221 | Allocate memory for them. */ | |
2222 | relocs = FALSE; | |
2223 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2224 | { | |
2225 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2226 | continue; | |
2227 | ||
2228 | if (s == htab->splt | |
2229 | || s == htab->sgot | |
2230 | || s == htab->sgotplt | |
2231 | || s == htab->sdynbss) | |
2232 | { | |
2233 | /* Strip this section if we don't need it; see the | |
2234 | comment below. */ | |
2235 | } | |
2236 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
2237 | { | |
2238 | if (s->size != 0 && s != htab->srelplt) | |
2239 | relocs = TRUE; | |
2240 | ||
2241 | /* We use the reloc_count field as a counter if we need | |
2242 | to copy relocs into the output file. */ | |
2243 | s->reloc_count = 0; | |
2244 | } | |
2245 | else | |
2246 | /* It's not one of our sections, so don't allocate space. */ | |
2247 | continue; | |
2248 | ||
2249 | if (s->size == 0) | |
2250 | { | |
2251 | /* If we don't need this section, strip it from the | |
2252 | output file. This is mostly to handle .rela.bss and | |
2253 | .rela.plt. We must create both sections in | |
2254 | create_dynamic_sections, because they must be created | |
2255 | before the linker maps input sections to output | |
2256 | sections. The linker does that before | |
2257 | adjust_dynamic_symbol is called, and it is that | |
2258 | function which decides whether anything needs to go | |
2259 | into these sections. */ | |
2260 | s->flags |= SEC_EXCLUDE; | |
2261 | continue; | |
2262 | } | |
2263 | ||
2264 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
2265 | continue; | |
2266 | ||
2267 | /* Allocate memory for the section contents. We use bfd_zalloc | |
2268 | here in case unused entries are not reclaimed before the | |
2269 | section's contents are written out. This should not happen, | |
2270 | but this way if it does, we get a R_LM32_NONE reloc instead | |
2271 | of garbage. */ | |
2272 | s->contents = bfd_zalloc (dynobj, s->size); | |
2273 | if (s->contents == NULL) | |
2274 | return FALSE; | |
2275 | } | |
2276 | ||
2277 | if (htab->root.dynamic_sections_created) | |
2278 | { | |
2279 | /* Add some entries to the .dynamic section. We fill in the | |
2280 | values later, in lm32_elf_finish_dynamic_sections, but we | |
2281 | must add the entries now so that we get the correct size for | |
2282 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2283 | dynamic linker and used by the debugger. */ | |
2284 | #define add_dynamic_entry(TAG, VAL) \ | |
2285 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
2286 | ||
0e1862bb | 2287 | if (bfd_link_executable (info)) |
84e94c90 NC |
2288 | { |
2289 | if (! add_dynamic_entry (DT_DEBUG, 0)) | |
2290 | return FALSE; | |
2291 | } | |
2292 | ||
2293 | if (htab->splt->size != 0) | |
2294 | { | |
2295 | if (! add_dynamic_entry (DT_PLTGOT, 0) | |
2296 | || ! add_dynamic_entry (DT_PLTRELSZ, 0) | |
2297 | || ! add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2298 | || ! add_dynamic_entry (DT_JMPREL, 0)) | |
2299 | return FALSE; | |
2300 | } | |
2301 | ||
2302 | if (relocs) | |
2303 | { | |
2304 | if (! add_dynamic_entry (DT_RELA, 0) | |
2305 | || ! add_dynamic_entry (DT_RELASZ, 0) | |
2306 | || ! add_dynamic_entry (DT_RELAENT, | |
2307 | sizeof (Elf32_External_Rela))) | |
2308 | return FALSE; | |
2309 | ||
2310 | /* If any dynamic relocs apply to a read-only section, | |
2311 | then we need a DT_TEXTREL entry. */ | |
2312 | if ((info->flags & DF_TEXTREL) == 0) | |
2313 | elf_link_hash_traverse (&htab->root, readonly_dynrelocs, | |
2314 | info); | |
2315 | ||
2316 | if ((info->flags & DF_TEXTREL) != 0) | |
2317 | { | |
2318 | if (! add_dynamic_entry (DT_TEXTREL, 0)) | |
2319 | return FALSE; | |
2320 | } | |
2321 | } | |
2322 | } | |
2323 | #undef add_dynamic_entry | |
2324 | ||
2325 | /* Allocate .rofixup section. */ | |
2326 | if (IS_FDPIC (output_bfd)) | |
2327 | { | |
2328 | struct weak_symbol_list *list_start = NULL, *list_end = NULL; | |
2329 | int rgot_weak_count = 0; | |
2330 | int r32_count = 0; | |
2331 | int rgot_count = 0; | |
2332 | /* Look for deleted sections. */ | |
c72f2fb2 | 2333 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next) |
84e94c90 NC |
2334 | { |
2335 | for (s = ibfd->sections; s != NULL; s = s->next) | |
2336 | { | |
2337 | if (s->reloc_count) | |
2338 | { | |
2339 | /* Count relocs that need .rofixup entires. */ | |
2340 | Elf_Internal_Rela *internal_relocs, *end; | |
2341 | internal_relocs = elf_section_data (s)->relocs; | |
2342 | if (internal_relocs == NULL) | |
2343 | internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE)); | |
2344 | if (internal_relocs != NULL) | |
2345 | { | |
2346 | end = internal_relocs + s->reloc_count; | |
2347 | while (internal_relocs < end) | |
2348 | { | |
2349 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2350 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
2351 | unsigned long r_symndx; | |
2352 | struct elf_link_hash_entry *h; | |
2353 | ||
2354 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2355 | sym_hashes = elf_sym_hashes (ibfd); | |
2356 | r_symndx = ELF32_R_SYM (internal_relocs->r_info); | |
2357 | h = NULL; | |
2358 | if (r_symndx < symtab_hdr->sh_info) | |
2359 | { | |
2360 | } | |
2361 | else | |
2362 | { | |
2363 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2364 | while (h->root.type == bfd_link_hash_indirect | |
2365 | || h->root.type == bfd_link_hash_warning) | |
2366 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2367 | } | |
2368 | ||
2369 | /* Don't generate entries for weak symbols. */ | |
2370 | if (!h || (h && h->root.type != bfd_link_hash_undefweak)) | |
2371 | { | |
dbaa2011 | 2372 | if (!discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0)) |
84e94c90 NC |
2373 | { |
2374 | switch (ELF32_R_TYPE (internal_relocs->r_info)) | |
2375 | { | |
2376 | case R_LM32_32: | |
2377 | r32_count++; | |
2378 | break; | |
2379 | case R_LM32_16_GOT: | |
2380 | rgot_count++; | |
2381 | break; | |
2382 | } | |
2383 | } | |
2384 | } | |
2385 | else | |
2386 | { | |
2387 | struct weak_symbol_list *current, *new_entry; | |
2388 | /* Is this symbol already in the list? */ | |
2389 | for (current = list_start; current; current = current->next) | |
2390 | { | |
2391 | if (!strcmp (current->name, h->root.root.string)) | |
2392 | break; | |
2393 | } | |
dbaa2011 | 2394 | if (!current && !discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC)) |
84e94c90 NC |
2395 | { |
2396 | /* Will this have an entry in the GOT. */ | |
2397 | if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT) | |
2398 | { | |
2399 | /* Create a new entry. */ | |
2400 | new_entry = malloc (sizeof (struct weak_symbol_list)); | |
2401 | if (!new_entry) | |
2402 | return FALSE; | |
2403 | new_entry->name = h->root.root.string; | |
2404 | new_entry->next = NULL; | |
2405 | /* Add to list */ | |
2406 | if (list_start == NULL) | |
2407 | { | |
2408 | list_start = new_entry; | |
2409 | list_end = new_entry; | |
2410 | } | |
2411 | else | |
2412 | { | |
2413 | list_end->next = new_entry; | |
2414 | list_end = new_entry; | |
2415 | } | |
2416 | /* Increase count of undefined weak symbols in the got. */ | |
2417 | rgot_weak_count++; | |
2418 | } | |
2419 | } | |
2420 | } | |
2421 | internal_relocs++; | |
2422 | } | |
2423 | } | |
2424 | else | |
2425 | return FALSE; | |
2426 | } | |
2427 | } | |
2428 | } | |
2429 | /* Free list. */ | |
2430 | while (list_start) | |
2431 | { | |
2432 | list_end = list_start->next; | |
2433 | free (list_start); | |
2434 | list_start = list_end; | |
2435 | } | |
2436 | ||
2437 | /* Size sections. */ | |
2438 | lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4; | |
2439 | if (lm32fdpic_fixup32_section (info)->size == 0) | |
2440 | lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE; | |
2441 | else | |
2442 | { | |
2443 | lm32fdpic_fixup32_section (info)->contents = | |
2444 | bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size); | |
2445 | if (lm32fdpic_fixup32_section (info)->contents == NULL) | |
2446 | return FALSE; | |
2447 | } | |
2448 | } | |
2449 | ||
2450 | return TRUE; | |
2451 | } | |
2452 | ||
2453 | /* Create dynamic sections when linking against a dynamic object. */ | |
2454 | ||
2455 | static bfd_boolean | |
2456 | lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2457 | { | |
2458 | struct elf_lm32_link_hash_table *htab; | |
2459 | flagword flags, pltflags; | |
2460 | asection *s; | |
2461 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2462 | int ptralign = 2; /* 32bit */ | |
2463 | ||
2464 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
2465 | if (htab == NULL) |
2466 | return FALSE; | |
84e94c90 NC |
2467 | |
2468 | /* Make sure we have a GOT - For the case where we have a dynamic object | |
2469 | but none of the relocs in check_relocs */ | |
2470 | if (! create_got_section (abfd, info)) | |
2471 | return FALSE; | |
2472 | if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL)) | |
2473 | { | |
2474 | if (! create_rofixup_section (abfd, info)) | |
2475 | return FALSE; | |
2476 | } | |
2477 | ||
2478 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
2479 | .rel[a].bss sections. */ | |
2480 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2481 | | SEC_LINKER_CREATED); | |
2482 | ||
2483 | pltflags = flags; | |
2484 | pltflags |= SEC_CODE; | |
2485 | if (bed->plt_not_loaded) | |
2486 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
2487 | if (bed->plt_readonly) | |
2488 | pltflags |= SEC_READONLY; | |
2489 | ||
3d4d4302 | 2490 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
84e94c90 NC |
2491 | htab->splt = s; |
2492 | if (s == NULL | |
2493 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
2494 | return FALSE; | |
2495 | ||
2496 | if (bed->want_plt_sym) | |
2497 | { | |
2498 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
2499 | .plt section. */ | |
2500 | struct bfd_link_hash_entry *bh = NULL; | |
2501 | struct elf_link_hash_entry *h; | |
2502 | ||
2503 | if (! (_bfd_generic_link_add_one_symbol | |
2504 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
2505 | (bfd_vma) 0, NULL, FALSE, | |
2506 | get_elf_backend_data (abfd)->collect, &bh))) | |
2507 | return FALSE; | |
2508 | h = (struct elf_link_hash_entry *) bh; | |
2509 | h->def_regular = 1; | |
2510 | h->type = STT_OBJECT; | |
2511 | htab->root.hplt = h; | |
2512 | ||
0e1862bb | 2513 | if (bfd_link_pic (info) |
84e94c90 NC |
2514 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
2515 | return FALSE; | |
2516 | } | |
2517 | ||
3d4d4302 AM |
2518 | s = bfd_make_section_anyway_with_flags (abfd, |
2519 | bed->default_use_rela_p | |
2520 | ? ".rela.plt" : ".rel.plt", | |
2521 | flags | SEC_READONLY); | |
84e94c90 NC |
2522 | htab->srelplt = s; |
2523 | if (s == NULL | |
2524 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2525 | return FALSE; | |
2526 | ||
2527 | if (htab->sgot == NULL | |
2528 | && ! create_got_section (abfd, info)) | |
2529 | return FALSE; | |
2530 | ||
84e94c90 NC |
2531 | if (bed->want_dynbss) |
2532 | { | |
2533 | /* The .dynbss section is a place to put symbols which are defined | |
2534 | by dynamic objects, are referenced by regular objects, and are | |
2535 | not functions. We must allocate space for them in the process | |
2536 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
2537 | initialize them at run time. The linker script puts the .dynbss | |
2538 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
2539 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
2540 | SEC_ALLOC | SEC_LINKER_CREATED); | |
84e94c90 NC |
2541 | htab->sdynbss = s; |
2542 | if (s == NULL) | |
2543 | return FALSE; | |
2544 | /* The .rel[a].bss section holds copy relocs. This section is not | |
2545 | normally needed. We need to create it here, though, so that the | |
2546 | linker will map it to an output section. We can't just create it | |
2547 | only if we need it, because we will not know whether we need it | |
2548 | until we have seen all the input files, and the first time the | |
2549 | main linker code calls BFD after examining all the input files | |
2550 | (size_dynamic_sections) the input sections have already been | |
2551 | mapped to the output sections. If the section turns out not to | |
2552 | be needed, we can discard it later. We will never need this | |
2553 | section when generating a shared object, since they do not use | |
2554 | copy relocs. */ | |
0e1862bb | 2555 | if (! bfd_link_pic (info)) |
84e94c90 | 2556 | { |
3d4d4302 AM |
2557 | s = bfd_make_section_anyway_with_flags (abfd, |
2558 | (bed->default_use_rela_p | |
2559 | ? ".rela.bss" : ".rel.bss"), | |
2560 | flags | SEC_READONLY); | |
84e94c90 NC |
2561 | htab->srelbss = s; |
2562 | if (s == NULL | |
2563 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2564 | return FALSE; | |
2565 | } | |
2566 | } | |
2567 | ||
2568 | return TRUE; | |
2569 | } | |
2570 | ||
2571 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2572 | ||
2573 | static void | |
2574 | lm32_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
2575 | struct elf_link_hash_entry *dir, | |
2576 | struct elf_link_hash_entry *ind) | |
2577 | { | |
2578 | struct elf_lm32_link_hash_entry * edir; | |
2579 | struct elf_lm32_link_hash_entry * eind; | |
2580 | ||
2581 | edir = (struct elf_lm32_link_hash_entry *) dir; | |
2582 | eind = (struct elf_lm32_link_hash_entry *) ind; | |
2583 | ||
2584 | if (eind->dyn_relocs != NULL) | |
2585 | { | |
2586 | if (edir->dyn_relocs != NULL) | |
2587 | { | |
2588 | struct elf_lm32_dyn_relocs **pp; | |
2589 | struct elf_lm32_dyn_relocs *p; | |
2590 | ||
2591 | /* Add reloc counts against the indirect sym to the direct sym | |
2592 | list. Merge any entries against the same section. */ | |
2593 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2594 | { | |
2595 | struct elf_lm32_dyn_relocs *q; | |
2596 | ||
2597 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2598 | if (q->sec == p->sec) | |
2599 | { | |
2600 | q->pc_count += p->pc_count; | |
2601 | q->count += p->count; | |
2602 | *pp = p->next; | |
2603 | break; | |
2604 | } | |
2605 | if (q == NULL) | |
2606 | pp = &p->next; | |
2607 | } | |
2608 | *pp = edir->dyn_relocs; | |
2609 | } | |
2610 | ||
2611 | edir->dyn_relocs = eind->dyn_relocs; | |
2612 | eind->dyn_relocs = NULL; | |
2613 | } | |
2614 | ||
2615 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2616 | } | |
2617 | ||
2618 | static bfd_boolean | |
04c3a755 | 2619 | lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) |
84e94c90 | 2620 | { |
0e1862bb | 2621 | if (!bfd_link_relocatable (info)) |
84e94c90 | 2622 | { |
04c3a755 NS |
2623 | if (!bfd_elf_stack_segment_size (output_bfd, info, |
2624 | "__stacksize", DEFAULT_STACK_SIZE)) | |
2625 | return FALSE; | |
84e94c90 | 2626 | |
84e94c90 | 2627 | asection *sec = bfd_get_section_by_name (output_bfd, ".stack"); |
84e94c90 | 2628 | if (sec) |
04c3a755 | 2629 | sec->size = info->stacksize >= 0 ? info->stacksize : 0; |
84e94c90 NC |
2630 | } |
2631 | ||
2632 | return TRUE; | |
2633 | } | |
2634 | ||
84e94c90 NC |
2635 | static bfd_boolean |
2636 | lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
2637 | { | |
2638 | unsigned i; | |
2639 | ||
2640 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2641 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2642 | return TRUE; | |
2643 | ||
e2349352 | 2644 | if (! _bfd_elf_copy_private_bfd_data (ibfd, obfd)) |
84e94c90 NC |
2645 | return FALSE; |
2646 | ||
2647 | if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr | |
2648 | || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) | |
2649 | return TRUE; | |
2650 | ||
2651 | /* Copy the stack size. */ | |
2652 | for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) | |
2653 | if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) | |
2654 | { | |
2655 | Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; | |
2656 | ||
2657 | for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) | |
2658 | if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) | |
2659 | { | |
2660 | memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); | |
2661 | ||
2662 | /* Rewrite the phdrs, since we're only called after they were first written. */ | |
2663 | if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) | |
2664 | ->s->sizeof_ehdr, SEEK_SET) != 0 | |
2665 | || get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, | |
2666 | elf_elfheader (obfd)->e_phnum) != 0) | |
2667 | return FALSE; | |
2668 | break; | |
2669 | } | |
2670 | ||
2671 | break; | |
2672 | } | |
2673 | ||
2674 | return TRUE; | |
2675 | } | |
2676 | ||
2677 | ||
2678 | #define ELF_ARCH bfd_arch_lm32 | |
ae95ffa6 | 2679 | #define ELF_TARGET_ID LM32_ELF_DATA |
84e94c90 NC |
2680 | #define ELF_MACHINE_CODE EM_LATTICEMICO32 |
2681 | #define ELF_MAXPAGESIZE 0x1000 | |
2682 | ||
6d00b590 | 2683 | #define TARGET_BIG_SYM lm32_elf32_vec |
84e94c90 NC |
2684 | #define TARGET_BIG_NAME "elf32-lm32" |
2685 | ||
2686 | #define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup | |
2687 | #define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup | |
2688 | #define elf_info_to_howto lm32_info_to_howto_rela | |
2689 | #define elf_info_to_howto_rel 0 | |
2690 | #define elf_backend_rela_normal 1 | |
2691 | #define elf_backend_object_p lm32_elf_object_p | |
2692 | #define elf_backend_final_write_processing lm32_elf_final_write_processing | |
04c3a755 | 2693 | #define elf_backend_stack_align 8 |
84e94c90 NC |
2694 | #define elf_backend_can_gc_sections 1 |
2695 | #define elf_backend_can_refcount 1 | |
2696 | #define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook | |
2697 | #define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook | |
2698 | #define elf_backend_plt_readonly 1 | |
2699 | #define elf_backend_want_got_plt 1 | |
2700 | #define elf_backend_want_plt_sym 0 | |
2701 | #define elf_backend_got_header_size 12 | |
2702 | #define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create | |
2703 | #define elf_backend_check_relocs lm32_elf_check_relocs | |
2704 | #define elf_backend_reloc_type_class lm32_elf_reloc_type_class | |
2705 | #define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol | |
2706 | #define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections | |
2707 | #define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
2708 | #define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections | |
2709 | #define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections | |
2710 | #define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol | |
2711 | #define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol | |
2712 | #define elf_backend_relocate_section lm32_elf_relocate_section | |
2713 | ||
2714 | #include "elf32-target.h" | |
2715 | ||
2716 | #undef ELF_MAXPAGESIZE | |
2717 | #define ELF_MAXPAGESIZE 0x4000 | |
2718 | ||
2719 | ||
2720 | #undef TARGET_BIG_SYM | |
6d00b590 | 2721 | #define TARGET_BIG_SYM lm32_elf32_fdpic_vec |
84e94c90 NC |
2722 | #undef TARGET_BIG_NAME |
2723 | #define TARGET_BIG_NAME "elf32-lm32fdpic" | |
2724 | #undef elf32_bed | |
2725 | #define elf32_bed elf32_lm32fdpic_bed | |
2726 | ||
2727 | #undef elf_backend_always_size_sections | |
2728 | #define elf_backend_always_size_sections lm32_elf_always_size_sections | |
84e94c90 NC |
2729 | #undef bfd_elf32_bfd_copy_private_bfd_data |
2730 | #define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data | |
2731 | ||
2732 | #include "elf32-target.h" |