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84e94c90 | 1 | /* Lattice Mico32-specific support for 32-bit ELF |
1d7e9d18 | 2 | Copyright 2008, 2009, 2010, 2011, 2012 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 | ||
46 | extern const bfd_target bfd_elf32_lm32fdpic_vec; | |
47 | ||
48 | #define IS_FDPIC(bfd) ((bfd)->xvec == &bfd_elf32_lm32fdpic_vec) | |
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 */ | |
265 | 2, /* size (0 = byte, 1 = short, 2 = long) */ | |
266 | 32, /* bitsize */ | |
267 | FALSE, /* pc_relative */ | |
268 | 0, /* bitpos */ | |
269 | complain_overflow_bitfield,/* complain_on_overflow */ | |
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); | |
591 | BFD_ASSERT (r_type < (unsigned int) R_LM32_max); | |
592 | cache_ptr->howto = &lm32_elf_howto_table[r_type]; | |
593 | } | |
594 | ||
595 | /* Set the right machine number for an Lattice Mico32 ELF file. */ | |
596 | ||
597 | static bfd_boolean | |
598 | lm32_elf_object_p (bfd *abfd) | |
599 | { | |
600 | return bfd_default_set_arch_mach (abfd, bfd_arch_lm32, bfd_mach_lm32); | |
601 | } | |
602 | ||
603 | /* Set machine type flags just before file is written out. */ | |
604 | ||
605 | static void | |
606 | lm32_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED) | |
607 | { | |
608 | elf_elfheader (abfd)->e_machine = EM_LATTICEMICO32; | |
609 | elf_elfheader (abfd)->e_flags &=~ EF_LM32_MACH; | |
610 | switch (bfd_get_mach (abfd)) | |
611 | { | |
612 | case bfd_mach_lm32: | |
613 | elf_elfheader (abfd)->e_flags |= E_LM32_MACH; | |
614 | break; | |
615 | default: | |
616 | abort (); | |
617 | } | |
618 | } | |
619 | ||
620 | /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a | |
621 | dangerous relocation. */ | |
622 | ||
623 | static bfd_boolean | |
624 | lm32_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp) | |
625 | { | |
626 | unsigned int count; | |
627 | asymbol **sym; | |
628 | unsigned int i; | |
629 | ||
630 | /* If we've already figured out what GP will be, just return it. */ | |
631 | *pgp = _bfd_get_gp_value (output_bfd); | |
632 | if (*pgp) | |
633 | return TRUE; | |
634 | ||
635 | count = bfd_get_symcount (output_bfd); | |
636 | sym = bfd_get_outsymbols (output_bfd); | |
637 | ||
638 | /* The linker script will have created a symbol named `_gp' with the | |
639 | appropriate value. */ | |
640 | if (sym == NULL) | |
641 | i = count; | |
642 | else | |
643 | { | |
644 | for (i = 0; i < count; i++, sym++) | |
645 | { | |
646 | const char *name; | |
647 | ||
648 | name = bfd_asymbol_name (*sym); | |
649 | if (*name == '_' && strcmp (name, "_gp") == 0) | |
650 | { | |
651 | *pgp = bfd_asymbol_value (*sym); | |
652 | _bfd_set_gp_value (output_bfd, *pgp); | |
653 | break; | |
654 | } | |
655 | } | |
656 | } | |
657 | ||
658 | if (i >= count) | |
659 | { | |
660 | /* Only get the error once. */ | |
661 | *pgp = 4; | |
662 | _bfd_set_gp_value (output_bfd, *pgp); | |
663 | return FALSE; | |
664 | } | |
665 | ||
666 | return TRUE; | |
667 | } | |
668 | ||
669 | /* We have to figure out the gp value, so that we can adjust the | |
670 | symbol value correctly. We look up the symbol _gp in the output | |
671 | BFD. If we can't find it, we're stuck. We cache it in the ELF | |
672 | target data. We don't need to adjust the symbol value for an | |
673 | external symbol if we are producing relocatable output. */ | |
674 | ||
675 | static bfd_reloc_status_type | |
676 | lm32_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable, | |
677 | char **error_message, bfd_vma *pgp) | |
678 | { | |
679 | if (bfd_is_und_section (symbol->section) && !relocatable) | |
680 | { | |
681 | *pgp = 0; | |
682 | return bfd_reloc_undefined; | |
683 | } | |
684 | ||
685 | *pgp = _bfd_get_gp_value (output_bfd); | |
686 | if (*pgp == 0 && (!relocatable || (symbol->flags & BSF_SECTION_SYM) != 0)) | |
687 | { | |
688 | if (relocatable) | |
689 | { | |
690 | /* Make up a value. */ | |
691 | *pgp = symbol->section->output_section->vma + 0x4000; | |
692 | _bfd_set_gp_value (output_bfd, *pgp); | |
693 | } | |
694 | else if (!lm32_elf_assign_gp (output_bfd, pgp)) | |
695 | { | |
696 | *error_message = | |
697 | (char *) | |
698 | _("global pointer relative relocation when _gp not defined"); | |
699 | return bfd_reloc_dangerous; | |
700 | } | |
701 | } | |
702 | ||
703 | return bfd_reloc_ok; | |
704 | } | |
705 | ||
706 | static bfd_reloc_status_type | |
707 | lm32_elf_do_gprel_relocate (bfd *abfd, | |
708 | reloc_howto_type *howto, | |
709 | asection *input_section ATTRIBUTE_UNUSED, | |
710 | bfd_byte *data, | |
711 | bfd_vma offset, | |
712 | bfd_vma symbol_value, | |
713 | bfd_vma addend) | |
714 | { | |
715 | return _bfd_final_link_relocate (howto, abfd, input_section, | |
716 | data, offset, symbol_value, addend); | |
717 | } | |
718 | ||
719 | static bfd_reloc_status_type | |
720 | lm32_elf_gprel_reloc (bfd *abfd, | |
721 | arelent *reloc_entry, | |
722 | asymbol *symbol, | |
723 | void *data, | |
724 | asection *input_section, | |
725 | bfd *output_bfd, | |
726 | char **msg) | |
727 | { | |
728 | bfd_vma relocation; | |
729 | bfd_vma gp; | |
730 | bfd_reloc_status_type r; | |
731 | ||
732 | if (output_bfd != (bfd *) NULL | |
733 | && (symbol->flags & BSF_SECTION_SYM) == 0 | |
734 | && (!reloc_entry->howto->partial_inplace || reloc_entry->addend == 0)) | |
735 | { | |
736 | reloc_entry->address += input_section->output_offset; | |
737 | return bfd_reloc_ok; | |
738 | } | |
739 | ||
740 | if (output_bfd != NULL) | |
741 | return bfd_reloc_ok; | |
742 | ||
743 | relocation = symbol->value | |
744 | + symbol->section->output_section->vma + symbol->section->output_offset; | |
745 | ||
746 | if ((r = | |
747 | lm32_elf_final_gp (abfd, symbol, FALSE, msg, &gp)) == bfd_reloc_ok) | |
748 | { | |
749 | relocation = relocation + reloc_entry->addend - gp; | |
750 | reloc_entry->addend = 0; | |
751 | if ((signed) relocation < -32768 || (signed) relocation > 32767) | |
752 | { | |
753 | *msg = _("global pointer relative address out of range"); | |
754 | r = bfd_reloc_outofrange; | |
755 | } | |
756 | else | |
757 | { | |
758 | r = lm32_elf_do_gprel_relocate (abfd, reloc_entry->howto, | |
759 | input_section, | |
760 | data, reloc_entry->address, | |
761 | relocation, reloc_entry->addend); | |
762 | } | |
763 | } | |
764 | ||
765 | return r; | |
766 | } | |
767 | ||
768 | /* Find the segment number in which OSEC, and output section, is | |
769 | located. */ | |
770 | ||
771 | static unsigned | |
772 | _lm32fdpic_osec_to_segment (bfd *output_bfd, asection *osec) | |
773 | { | |
774 | struct elf_segment_map *m; | |
775 | Elf_Internal_Phdr *p; | |
776 | ||
777 | /* Find the segment that contains the output_section. */ | |
778 | for (m = elf_tdata (output_bfd)->segment_map, | |
779 | p = elf_tdata (output_bfd)->phdr; | |
780 | m != NULL; | |
781 | m = m->next, p++) | |
782 | { | |
783 | int i; | |
784 | ||
785 | for (i = m->count - 1; i >= 0; i--) | |
786 | if (m->sections[i] == osec) | |
787 | break; | |
788 | ||
789 | if (i >= 0) | |
790 | break; | |
791 | } | |
792 | ||
793 | return p - elf_tdata (output_bfd)->phdr; | |
794 | } | |
795 | ||
796 | /* Determine if an output section is read-only. */ | |
797 | ||
798 | inline static bfd_boolean | |
799 | _lm32fdpic_osec_readonly_p (bfd *output_bfd, asection *osec) | |
800 | { | |
801 | unsigned seg = _lm32fdpic_osec_to_segment (output_bfd, osec); | |
802 | ||
803 | return ! (elf_tdata (output_bfd)->phdr[seg].p_flags & PF_W); | |
804 | } | |
805 | ||
806 | /* Relocate a section */ | |
807 | ||
808 | static bfd_boolean | |
809 | lm32_elf_relocate_section (bfd *output_bfd, | |
810 | struct bfd_link_info *info, | |
811 | bfd *input_bfd, | |
812 | asection *input_section, | |
813 | bfd_byte *contents, | |
814 | Elf_Internal_Rela *relocs, | |
815 | Elf_Internal_Sym *local_syms, | |
816 | asection **local_sections) | |
817 | { | |
818 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
819 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); | |
820 | Elf_Internal_Rela *rel, *relend; | |
84e94c90 NC |
821 | struct elf_lm32_link_hash_table *htab = lm32_elf_hash_table (info); |
822 | bfd *dynobj; | |
823 | bfd_vma *local_got_offsets; | |
c7e2358a | 824 | asection *sgot; |
84e94c90 | 825 | |
4dfe6ac6 NC |
826 | if (htab == NULL) |
827 | return FALSE; | |
828 | ||
84e94c90 NC |
829 | dynobj = htab->root.dynobj; |
830 | local_got_offsets = elf_local_got_offsets (input_bfd); | |
831 | ||
832 | sgot = htab->sgot; | |
84e94c90 NC |
833 | |
834 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; | |
835 | sym_hashes = elf_sym_hashes (input_bfd); | |
836 | ||
837 | rel = relocs; | |
838 | relend = relocs + input_section->reloc_count; | |
839 | for (; rel < relend; rel++) | |
840 | { | |
841 | reloc_howto_type *howto; | |
842 | unsigned int r_type; | |
843 | unsigned long r_symndx; | |
844 | Elf_Internal_Sym *sym; | |
845 | asection *sec; | |
846 | struct elf_link_hash_entry *h; | |
847 | bfd_vma relocation; | |
848 | bfd_vma gp; | |
849 | bfd_reloc_status_type r; | |
850 | const char *name = NULL; | |
84e94c90 NC |
851 | |
852 | r_symndx = ELF32_R_SYM (rel->r_info); | |
853 | r_type = ELF32_R_TYPE (rel->r_info); | |
854 | ||
855 | if (r_type == R_LM32_GNU_VTENTRY | |
856 | || r_type == R_LM32_GNU_VTINHERIT ) | |
857 | continue; | |
858 | ||
859 | h = NULL; | |
860 | sym = NULL; | |
861 | sec = NULL; | |
862 | ||
863 | howto = lm32_elf_howto_table + r_type; | |
864 | ||
865 | if (r_symndx < symtab_hdr->sh_info) | |
866 | { | |
867 | /* It's a local symbol. */ | |
868 | sym = local_syms + r_symndx; | |
c7e2358a | 869 | sec = local_sections[r_symndx]; |
84e94c90 NC |
870 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
871 | name = bfd_elf_string_from_elf_section | |
872 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
873 | name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name; | |
874 | } | |
875 | else | |
876 | { | |
877 | /* It's a global symbol. */ | |
878 | bfd_boolean unresolved_reloc; | |
879 | bfd_boolean warned; | |
880 | ||
881 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
882 | r_symndx, symtab_hdr, sym_hashes, | |
883 | h, sec, relocation, | |
884 | unresolved_reloc, warned); | |
84e94c90 NC |
885 | name = h->root.root.string; |
886 | } | |
887 | ||
dbaa2011 | 888 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 889 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 890 | rel, 1, relend, howto, 0, contents); |
84e94c90 NC |
891 | |
892 | if (info->relocatable) | |
893 | { | |
894 | /* This is a relocatable link. We don't have to change | |
895 | anything, unless the reloc is against a section symbol, | |
896 | in which case we have to adjust according to where the | |
897 | section symbol winds up in the output section. */ | |
898 | if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) | |
899 | continue; | |
900 | ||
901 | /* If partial_inplace, we need to store any additional addend | |
902 | back in the section. */ | |
903 | if (! howto->partial_inplace) | |
904 | continue; | |
905 | ||
906 | /* Shouldn't reach here. */ | |
907 | abort (); | |
908 | r = bfd_reloc_ok; | |
909 | } | |
910 | else | |
911 | { | |
912 | switch (howto->type) | |
913 | { | |
914 | case R_LM32_GPREL16: | |
915 | if (!lm32_elf_assign_gp (output_bfd, &gp)) | |
916 | r = bfd_reloc_dangerous; | |
917 | else | |
918 | { | |
919 | relocation = relocation + rel->r_addend - gp; | |
920 | rel->r_addend = 0; | |
921 | if ((signed)relocation < -32768 || (signed)relocation > 32767) | |
922 | r = bfd_reloc_outofrange; | |
923 | else | |
924 | { | |
925 | r = _bfd_final_link_relocate (howto, input_bfd, | |
926 | input_section, contents, | |
927 | rel->r_offset, relocation, | |
928 | rel->r_addend); | |
929 | } | |
930 | } | |
931 | break; | |
932 | case R_LM32_16_GOT: | |
933 | /* Relocation is to the entry for this symbol in the global | |
934 | offset table. */ | |
935 | BFD_ASSERT (sgot != NULL); | |
936 | if (h != NULL) | |
937 | { | |
938 | bfd_boolean dyn; | |
939 | bfd_vma off; | |
940 | ||
941 | off = h->got.offset; | |
942 | BFD_ASSERT (off != (bfd_vma) -1); | |
943 | ||
944 | dyn = htab->root.dynamic_sections_created; | |
945 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) | |
946 | || (info->shared | |
947 | && (info->symbolic | |
948 | || h->dynindx == -1 | |
949 | || h->forced_local) | |
950 | && h->def_regular)) | |
951 | { | |
952 | /* This is actually a static link, or it is a | |
953 | -Bsymbolic link and the symbol is defined | |
954 | locally, or the symbol was forced to be local | |
955 | because of a version file. We must initialize | |
956 | this entry in the global offset table. Since the | |
957 | offset must always be a multiple of 4, we use the | |
958 | least significant bit to record whether we have | |
959 | initialized it already. | |
960 | ||
961 | When doing a dynamic link, we create a .rela.got | |
962 | relocation entry to initialize the value. This | |
963 | is done in the finish_dynamic_symbol routine. */ | |
964 | if ((off & 1) != 0) | |
965 | off &= ~1; | |
966 | else | |
967 | { | |
968 | /* Write entry in GOT */ | |
969 | bfd_put_32 (output_bfd, relocation, | |
970 | sgot->contents + off); | |
971 | /* Create entry in .rofixup pointing to GOT entry. */ | |
972 | if (IS_FDPIC (output_bfd) && h->root.type != bfd_link_hash_undefweak) | |
973 | { | |
974 | _lm32fdpic_add_rofixup (output_bfd, | |
975 | lm32fdpic_fixup32_section | |
976 | (info), | |
977 | sgot->output_section->vma | |
978 | + sgot->output_offset | |
979 | + off); | |
980 | } | |
981 | /* Mark GOT entry as having been written. */ | |
982 | h->got.offset |= 1; | |
983 | } | |
984 | } | |
985 | ||
986 | relocation = sgot->output_offset + off; | |
987 | } | |
988 | else | |
989 | { | |
990 | bfd_vma off; | |
991 | bfd_byte *loc; | |
992 | ||
993 | BFD_ASSERT (local_got_offsets != NULL | |
994 | && local_got_offsets[r_symndx] != (bfd_vma) -1); | |
995 | ||
996 | /* Get offset into GOT table. */ | |
997 | off = local_got_offsets[r_symndx]; | |
998 | ||
999 | /* The offset must always be a multiple of 4. We use | |
1000 | the least significant bit to record whether we have | |
1001 | already processed this entry. */ | |
1002 | if ((off & 1) != 0) | |
1003 | off &= ~1; | |
1004 | else | |
1005 | { | |
1006 | /* Write entry in GOT. */ | |
1007 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); | |
1008 | /* Create entry in .rofixup pointing to GOT entry. */ | |
1009 | if (IS_FDPIC (output_bfd)) | |
1010 | { | |
1011 | _lm32fdpic_add_rofixup (output_bfd, | |
1012 | lm32fdpic_fixup32_section | |
1013 | (info), | |
1014 | sgot->output_section->vma | |
1015 | + sgot->output_offset | |
1016 | + off); | |
1017 | } | |
1018 | ||
1019 | if (info->shared) | |
1020 | { | |
1021 | asection *srelgot; | |
1022 | Elf_Internal_Rela outrel; | |
1023 | ||
1024 | /* We need to generate a R_LM32_RELATIVE reloc | |
1025 | for the dynamic linker. */ | |
3d4d4302 AM |
1026 | srelgot = bfd_get_linker_section (dynobj, |
1027 | ".rela.got"); | |
84e94c90 NC |
1028 | BFD_ASSERT (srelgot != NULL); |
1029 | ||
1030 | outrel.r_offset = (sgot->output_section->vma | |
1031 | + sgot->output_offset | |
1032 | + off); | |
1033 | outrel.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE); | |
1034 | outrel.r_addend = relocation; | |
1035 | loc = srelgot->contents; | |
1036 | loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); | |
1037 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); | |
1038 | ++srelgot->reloc_count; | |
1039 | } | |
1040 | ||
1041 | local_got_offsets[r_symndx] |= 1; | |
1042 | } | |
1043 | ||
1044 | ||
1045 | relocation = sgot->output_offset + off; | |
1046 | } | |
1047 | ||
1048 | /* Addend should be zero. */ | |
1049 | if (rel->r_addend != 0) | |
1050 | (*_bfd_error_handler) (_("internal error: addend should be zero for R_LM32_16_GOT")); | |
1051 | ||
1052 | r = _bfd_final_link_relocate (howto, | |
1053 | input_bfd, | |
1054 | input_section, | |
1055 | contents, | |
1056 | rel->r_offset, | |
1057 | relocation, | |
1058 | rel->r_addend); | |
1059 | break; | |
1060 | ||
1061 | case R_LM32_GOTOFF_LO16: | |
1062 | case R_LM32_GOTOFF_HI16: | |
1063 | /* Relocation is offset from GOT. */ | |
1064 | BFD_ASSERT (sgot != NULL); | |
1065 | relocation -= sgot->output_section->vma; | |
1066 | /* Account for sign-extension. */ | |
1067 | if ((r_type == R_LM32_GOTOFF_HI16) | |
1068 | && ((relocation + rel->r_addend) & 0x8000)) | |
1069 | rel->r_addend += 0x10000; | |
1070 | r = _bfd_final_link_relocate (howto, | |
1071 | input_bfd, | |
1072 | input_section, | |
1073 | contents, | |
1074 | rel->r_offset, | |
1075 | relocation, | |
1076 | rel->r_addend); | |
1077 | break; | |
1078 | ||
1079 | case R_LM32_32: | |
1080 | if (IS_FDPIC (output_bfd)) | |
1081 | { | |
1082 | if ((!h) || (h && h->root.type != bfd_link_hash_undefweak)) | |
1083 | { | |
1084 | /* Only create .rofixup entries for relocs in loadable sections. */ | |
1085 | if ((bfd_get_section_flags (output_bfd, input_section->output_section) | |
1086 | & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) | |
1087 | ||
1088 | { | |
1089 | /* Check address to be modified is writable. */ | |
1090 | if (_lm32fdpic_osec_readonly_p (output_bfd, | |
1091 | input_section | |
1092 | ->output_section)) | |
1093 | { | |
1094 | info->callbacks->warning | |
1095 | (info, | |
1096 | _("cannot emit dynamic relocations in read-only section"), | |
1097 | name, input_bfd, input_section, rel->r_offset); | |
1098 | return FALSE; | |
1099 | } | |
1100 | /* Create entry in .rofixup section. */ | |
1101 | _lm32fdpic_add_rofixup (output_bfd, | |
1102 | lm32fdpic_fixup32_section (info), | |
1103 | input_section->output_section->vma | |
1104 | + input_section->output_offset | |
1105 | + rel->r_offset); | |
1106 | } | |
1107 | } | |
1108 | } | |
1109 | /* Fall through. */ | |
1110 | ||
1111 | default: | |
1112 | r = _bfd_final_link_relocate (howto, | |
1113 | input_bfd, | |
1114 | input_section, | |
1115 | contents, | |
1116 | rel->r_offset, | |
1117 | relocation, | |
1118 | rel->r_addend); | |
1119 | break; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | if (r != bfd_reloc_ok) | |
1124 | { | |
84e94c90 NC |
1125 | const char *msg = NULL; |
1126 | arelent bfd_reloc; | |
84e94c90 NC |
1127 | |
1128 | lm32_info_to_howto_rela (input_bfd, &bfd_reloc, rel); | |
1129 | howto = bfd_reloc.howto; | |
1130 | ||
1131 | if (h != NULL) | |
1132 | name = h->root.root.string; | |
1133 | else | |
1134 | { | |
1135 | name = (bfd_elf_string_from_elf_section | |
1136 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); | |
1137 | if (name == NULL || *name == '\0') | |
1138 | name = bfd_section_name (input_bfd, sec); | |
1139 | } | |
1140 | ||
1141 | switch (r) | |
1142 | { | |
1143 | case bfd_reloc_overflow: | |
1144 | if ((h != NULL) | |
1145 | && (h->root.type == bfd_link_hash_undefweak)) | |
1146 | break; | |
1147 | if (! ((*info->callbacks->reloc_overflow) | |
1148 | (info, (h ? &h->root : NULL), name, howto->name, | |
1149 | (bfd_vma) 0, input_bfd, input_section, rel->r_offset))) | |
1150 | return FALSE; | |
1151 | break; | |
1152 | ||
1153 | case bfd_reloc_undefined: | |
1154 | if (! ((*info->callbacks->undefined_symbol) | |
1155 | (info, name, input_bfd, input_section, | |
1156 | rel->r_offset, TRUE))) | |
1157 | return FALSE; | |
1158 | break; | |
1159 | ||
1160 | case bfd_reloc_outofrange: | |
1161 | msg = _("internal error: out of range error"); | |
1162 | goto common_error; | |
1163 | ||
1164 | case bfd_reloc_notsupported: | |
1165 | msg = _("internal error: unsupported relocation error"); | |
1166 | goto common_error; | |
1167 | ||
1168 | case bfd_reloc_dangerous: | |
1169 | msg = _("internal error: dangerous error"); | |
1170 | goto common_error; | |
1171 | ||
1172 | default: | |
1173 | msg = _("internal error: unknown error"); | |
1174 | /* fall through */ | |
1175 | ||
1176 | common_error: | |
1177 | if (!((*info->callbacks->warning) | |
1178 | (info, msg, name, input_bfd, input_section, | |
1179 | rel->r_offset))) | |
1180 | return FALSE; | |
1181 | break; | |
1182 | } | |
1183 | } | |
1184 | } | |
1185 | ||
1186 | return TRUE; | |
1187 | } | |
1188 | ||
1189 | static asection * | |
1190 | lm32_elf_gc_mark_hook (asection *sec, | |
1191 | struct bfd_link_info *info, | |
1192 | Elf_Internal_Rela *rel, | |
1193 | struct elf_link_hash_entry *h, | |
1194 | Elf_Internal_Sym *sym) | |
1195 | { | |
1196 | if (h != NULL) | |
1197 | switch (ELF32_R_TYPE (rel->r_info)) | |
1198 | { | |
1199 | case R_LM32_GNU_VTINHERIT: | |
1200 | case R_LM32_GNU_VTENTRY: | |
1201 | return NULL; | |
1202 | } | |
1203 | ||
1204 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); | |
1205 | } | |
1206 | ||
1207 | static bfd_boolean | |
1208 | lm32_elf_gc_sweep_hook (bfd *abfd, | |
1209 | struct bfd_link_info *info ATTRIBUTE_UNUSED, | |
1210 | asection *sec, | |
1211 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) | |
1212 | { | |
1213 | /* Update the got entry reference counts for the section being removed. */ | |
1214 | Elf_Internal_Shdr *symtab_hdr; | |
1215 | struct elf_link_hash_entry **sym_hashes; | |
1216 | bfd_signed_vma *local_got_refcounts; | |
1217 | const Elf_Internal_Rela *rel, *relend; | |
1218 | ||
1219 | elf_section_data (sec)->local_dynrel = NULL; | |
1220 | ||
1221 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1222 | sym_hashes = elf_sym_hashes (abfd); | |
1223 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1224 | ||
1225 | relend = relocs + sec->reloc_count; | |
1226 | for (rel = relocs; rel < relend; rel++) | |
1227 | { | |
1228 | unsigned long r_symndx; | |
1229 | struct elf_link_hash_entry *h = NULL; | |
1230 | ||
1231 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1232 | if (r_symndx >= symtab_hdr->sh_info) | |
1233 | { | |
1234 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1235 | while (h->root.type == bfd_link_hash_indirect | |
1236 | || h->root.type == bfd_link_hash_warning) | |
1237 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1238 | } | |
1239 | ||
1240 | switch (ELF32_R_TYPE (rel->r_info)) | |
1241 | { | |
1242 | case R_LM32_16_GOT: | |
1243 | if (h != NULL) | |
1244 | { | |
1245 | if (h->got.refcount > 0) | |
1246 | h->got.refcount--; | |
1247 | } | |
1248 | else | |
1249 | { | |
1250 | if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) | |
1251 | local_got_refcounts[r_symndx]--; | |
1252 | } | |
1253 | break; | |
1254 | ||
1255 | default: | |
1256 | break; | |
1257 | } | |
1258 | } | |
1259 | return TRUE; | |
1260 | } | |
1261 | ||
1262 | /* Look through the relocs for a section during the first phase. */ | |
1263 | ||
1264 | static bfd_boolean | |
1265 | lm32_elf_check_relocs (bfd *abfd, | |
1266 | struct bfd_link_info *info, | |
1267 | asection *sec, | |
1268 | const Elf_Internal_Rela *relocs) | |
1269 | { | |
1270 | Elf_Internal_Shdr *symtab_hdr; | |
1271 | struct elf_link_hash_entry **sym_hashes, **sym_hashes_end; | |
1272 | const Elf_Internal_Rela *rel; | |
1273 | const Elf_Internal_Rela *rel_end; | |
1274 | struct elf_lm32_link_hash_table *htab; | |
1275 | bfd *dynobj; | |
84e94c90 NC |
1276 | |
1277 | if (info->relocatable) | |
1278 | return TRUE; | |
1279 | ||
84e94c90 NC |
1280 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
1281 | sym_hashes = elf_sym_hashes (abfd); | |
1282 | sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym); | |
1283 | if (!elf_bad_symtab (abfd)) | |
1284 | sym_hashes_end -= symtab_hdr->sh_info; | |
1285 | ||
1286 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1287 | if (htab == NULL) |
1288 | return FALSE; | |
1289 | ||
84e94c90 | 1290 | dynobj = htab->root.dynobj; |
84e94c90 NC |
1291 | |
1292 | rel_end = relocs + sec->reloc_count; | |
1293 | for (rel = relocs; rel < rel_end; rel++) | |
1294 | { | |
1295 | int r_type; | |
1296 | struct elf_link_hash_entry *h; | |
1297 | unsigned long r_symndx; | |
1298 | ||
1299 | r_symndx = ELF32_R_SYM (rel->r_info); | |
1300 | r_type = ELF32_R_TYPE (rel->r_info); | |
1301 | if (r_symndx < symtab_hdr->sh_info) | |
1302 | h = NULL; | |
1303 | else | |
1304 | { | |
1305 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
1306 | while (h->root.type == bfd_link_hash_indirect | |
1307 | || h->root.type == bfd_link_hash_warning) | |
1308 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
1309 | } | |
1310 | ||
1311 | /* Some relocs require a global offset table. */ | |
1312 | if (htab->sgot == NULL) | |
1313 | { | |
1314 | switch (r_type) | |
1315 | { | |
1316 | case R_LM32_16_GOT: | |
1317 | case R_LM32_GOTOFF_HI16: | |
1318 | case R_LM32_GOTOFF_LO16: | |
1319 | if (dynobj == NULL) | |
1320 | htab->root.dynobj = dynobj = abfd; | |
1321 | if (! create_got_section (dynobj, info)) | |
1322 | return FALSE; | |
1323 | break; | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | /* Some relocs require a rofixup table. */ | |
1328 | if (IS_FDPIC (abfd)) | |
1329 | { | |
1330 | switch (r_type) | |
1331 | { | |
1332 | case R_LM32_32: | |
1333 | /* FDPIC requires a GOT if there is a .rofixup section | |
1334 | (Normal ELF doesn't). */ | |
1335 | if (dynobj == NULL) | |
1336 | htab->root.dynobj = dynobj = abfd; | |
1337 | if (! create_got_section (dynobj, info)) | |
1338 | return FALSE; | |
1339 | /* Create .rofixup section */ | |
1340 | if (htab->sfixup32 == NULL) | |
1341 | { | |
3d4d4302 | 1342 | if (! create_rofixup_section (dynobj, info)) |
84e94c90 NC |
1343 | return FALSE; |
1344 | } | |
1345 | break; | |
1346 | case R_LM32_16_GOT: | |
1347 | case R_LM32_GOTOFF_HI16: | |
1348 | case R_LM32_GOTOFF_LO16: | |
1349 | /* Create .rofixup section. */ | |
1350 | if (htab->sfixup32 == NULL) | |
1351 | { | |
3d4d4302 AM |
1352 | if (dynobj == NULL) |
1353 | htab->root.dynobj = dynobj = abfd; | |
1354 | if (! create_rofixup_section (dynobj, info)) | |
84e94c90 NC |
1355 | return FALSE; |
1356 | } | |
1357 | break; | |
1358 | } | |
1359 | } | |
1360 | ||
1361 | switch (r_type) | |
1362 | { | |
1363 | case R_LM32_16_GOT: | |
1364 | if (h != NULL) | |
1365 | h->got.refcount += 1; | |
1366 | else | |
1367 | { | |
1368 | bfd_signed_vma *local_got_refcounts; | |
1369 | ||
1370 | /* This is a global offset table entry for a local symbol. */ | |
1371 | local_got_refcounts = elf_local_got_refcounts (abfd); | |
1372 | if (local_got_refcounts == NULL) | |
1373 | { | |
1374 | bfd_size_type size; | |
1375 | ||
1376 | size = symtab_hdr->sh_info; | |
1377 | size *= sizeof (bfd_signed_vma); | |
1378 | local_got_refcounts = bfd_zalloc (abfd, size); | |
1379 | if (local_got_refcounts == NULL) | |
1380 | return FALSE; | |
1381 | elf_local_got_refcounts (abfd) = local_got_refcounts; | |
1382 | } | |
1383 | local_got_refcounts[r_symndx] += 1; | |
1384 | } | |
1385 | break; | |
1386 | ||
1387 | /* This relocation describes the C++ object vtable hierarchy. | |
1388 | Reconstruct it for later use during GC. */ | |
1389 | case R_LM32_GNU_VTINHERIT: | |
1390 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) | |
1391 | return FALSE; | |
1392 | break; | |
1393 | ||
1394 | /* This relocation describes which C++ vtable entries are actually | |
1395 | used. Record for later use during GC. */ | |
1396 | case R_LM32_GNU_VTENTRY: | |
1397 | if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) | |
1398 | return FALSE; | |
1399 | break; | |
1400 | ||
1401 | } | |
1402 | } | |
1403 | ||
1404 | return TRUE; | |
1405 | } | |
1406 | ||
1407 | /* Finish up the dynamic sections. */ | |
1408 | ||
1409 | static bfd_boolean | |
1410 | lm32_elf_finish_dynamic_sections (bfd *output_bfd, | |
1411 | struct bfd_link_info *info) | |
1412 | { | |
1413 | struct elf_lm32_link_hash_table *htab; | |
1414 | bfd *dynobj; | |
1415 | asection *sdyn; | |
1416 | asection *sgot; | |
1417 | ||
1418 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1419 | if (htab == NULL) |
1420 | return FALSE; | |
1421 | ||
84e94c90 NC |
1422 | dynobj = htab->root.dynobj; |
1423 | ||
1424 | sgot = htab->sgotplt; | |
3d4d4302 | 1425 | sdyn = bfd_get_linker_section (dynobj, ".dynamic"); |
84e94c90 NC |
1426 | |
1427 | if (htab->root.dynamic_sections_created) | |
1428 | { | |
1429 | asection *splt; | |
1430 | Elf32_External_Dyn *dyncon, *dynconend; | |
1431 | ||
1432 | BFD_ASSERT (sgot != NULL && sdyn != NULL); | |
1433 | ||
1434 | dyncon = (Elf32_External_Dyn *) sdyn->contents; | |
1435 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); | |
1436 | ||
1437 | for (; dyncon < dynconend; dyncon++) | |
1438 | { | |
1439 | Elf_Internal_Dyn dyn; | |
84e94c90 NC |
1440 | asection *s; |
1441 | ||
1442 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); | |
1443 | ||
1444 | switch (dyn.d_tag) | |
1445 | { | |
1446 | default: | |
1447 | break; | |
1448 | ||
1449 | case DT_PLTGOT: | |
84e94c90 NC |
1450 | s = htab->sgot->output_section; |
1451 | goto get_vma; | |
1452 | case DT_JMPREL: | |
84e94c90 NC |
1453 | s = htab->srelplt->output_section; |
1454 | get_vma: | |
1455 | BFD_ASSERT (s != NULL); | |
1456 | dyn.d_un.d_ptr = s->vma; | |
1457 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1458 | break; | |
1459 | ||
1460 | case DT_PLTRELSZ: | |
1461 | s = htab->srelplt->output_section; | |
1462 | BFD_ASSERT (s != NULL); | |
1463 | dyn.d_un.d_val = s->size; | |
1464 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1465 | break; | |
1466 | ||
1467 | case DT_RELASZ: | |
1468 | /* My reading of the SVR4 ABI indicates that the | |
1469 | procedure linkage table relocs (DT_JMPREL) should be | |
1470 | included in the overall relocs (DT_RELA). This is | |
1471 | what Solaris does. However, UnixWare can not handle | |
1472 | that case. Therefore, we override the DT_RELASZ entry | |
1473 | here to make it not include the JMPREL relocs. Since | |
1474 | the linker script arranges for .rela.plt to follow all | |
1475 | other relocation sections, we don't have to worry | |
1476 | about changing the DT_RELA entry. */ | |
1477 | if (htab->srelplt != NULL) | |
1478 | { | |
1479 | s = htab->srelplt->output_section; | |
1480 | dyn.d_un.d_val -= s->size; | |
1481 | } | |
1482 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); | |
1483 | break; | |
1484 | } | |
1485 | } | |
1486 | ||
1487 | /* Fill in the first entry in the procedure linkage table. */ | |
1488 | splt = htab->splt; | |
1489 | if (splt && splt->size > 0) | |
1490 | { | |
1491 | if (info->shared) | |
1492 | { | |
1493 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); | |
1494 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); | |
1495 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); | |
1496 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); | |
1497 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); | |
1498 | } | |
1499 | else | |
1500 | { | |
1501 | unsigned long addr; | |
1502 | /* addr = .got + 4 */ | |
1503 | addr = sgot->output_section->vma + sgot->output_offset + 4; | |
1504 | bfd_put_32 (output_bfd, | |
1505 | PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), | |
1506 | splt->contents); | |
1507 | bfd_put_32 (output_bfd, | |
1508 | PLT0_ENTRY_WORD1 | (addr & 0xffff), | |
1509 | splt->contents + 4); | |
1510 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); | |
1511 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); | |
1512 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); | |
1513 | } | |
1514 | ||
1515 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = | |
1516 | PLT_ENTRY_SIZE; | |
1517 | } | |
1518 | } | |
1519 | ||
1520 | /* Fill in the first three entries in the global offset table. */ | |
1521 | if (sgot && sgot->size > 0) | |
1522 | { | |
1523 | if (sdyn == NULL) | |
1524 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); | |
1525 | else | |
1526 | bfd_put_32 (output_bfd, | |
1527 | sdyn->output_section->vma + sdyn->output_offset, | |
1528 | sgot->contents); | |
1529 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); | |
1530 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); | |
1531 | ||
1532 | /* FIXME: This can be null if create_dynamic_sections wasn't called. */ | |
1533 | if (elf_section_data (sgot->output_section) != NULL) | |
1534 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; | |
1535 | } | |
1536 | ||
1537 | if (lm32fdpic_fixup32_section (info)) | |
1538 | { | |
1539 | struct elf_link_hash_entry *hgot = elf_hash_table (info)->hgot; | |
1540 | bfd_vma got_value = hgot->root.u.def.value | |
1541 | + hgot->root.u.def.section->output_section->vma | |
1542 | + hgot->root.u.def.section->output_offset; | |
1543 | struct bfd_link_hash_entry *hend; | |
1544 | ||
1545 | /* Last entry is pointer to GOT. */ | |
1546 | _lm32fdpic_add_rofixup (output_bfd, lm32fdpic_fixup32_section (info), got_value); | |
1547 | ||
1548 | /* Check we wrote enough entries. */ | |
1549 | if (lm32fdpic_fixup32_section (info)->size | |
1550 | != (lm32fdpic_fixup32_section (info)->reloc_count * 4)) | |
1551 | { | |
1552 | (*_bfd_error_handler) | |
1553 | ("LINKER BUG: .rofixup section size mismatch: size/4 %d != relocs %d", | |
1554 | lm32fdpic_fixup32_section (info)->size/4, | |
1555 | lm32fdpic_fixup32_section (info)->reloc_count); | |
1556 | return FALSE; | |
1557 | } | |
1558 | ||
1559 | hend = bfd_link_hash_lookup (info->hash, "__ROFIXUP_END__", | |
1560 | FALSE, FALSE, TRUE); | |
1561 | if (hend | |
1562 | && (hend->type == bfd_link_hash_defined | |
1563 | || hend->type == bfd_link_hash_defweak)) | |
1564 | { | |
1565 | bfd_vma value = | |
1566 | lm32fdpic_fixup32_section (info)->output_section->vma | |
1567 | + lm32fdpic_fixup32_section (info)->output_offset | |
1568 | + lm32fdpic_fixup32_section (info)->size | |
1569 | - hend->u.def.section->output_section->vma | |
1570 | - hend->u.def.section->output_offset; | |
1571 | BFD_ASSERT (hend->u.def.value == value); | |
1572 | if (hend->u.def.value != value) | |
1573 | { | |
1574 | (*_bfd_error_handler) | |
1575 | ("LINKER BUG: .rofixup section hend->u.def.value != value: %ld != %ld", hend->u.def.value, value); | |
1576 | return FALSE; | |
1577 | } | |
1578 | } | |
1579 | } | |
1580 | ||
1581 | return TRUE; | |
1582 | } | |
1583 | ||
1584 | /* Finish up dynamic symbol handling. We set the contents of various | |
1585 | dynamic sections here. */ | |
1586 | ||
1587 | static bfd_boolean | |
1588 | lm32_elf_finish_dynamic_symbol (bfd *output_bfd, | |
1589 | struct bfd_link_info *info, | |
1590 | struct elf_link_hash_entry *h, | |
1591 | Elf_Internal_Sym *sym) | |
1592 | { | |
1593 | struct elf_lm32_link_hash_table *htab; | |
84e94c90 NC |
1594 | bfd_byte *loc; |
1595 | ||
1596 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1597 | if (htab == NULL) |
1598 | return FALSE; | |
1599 | ||
84e94c90 NC |
1600 | if (h->plt.offset != (bfd_vma) -1) |
1601 | { | |
1602 | asection *splt; | |
1603 | asection *sgot; | |
1604 | asection *srela; | |
1605 | ||
1606 | bfd_vma plt_index; | |
1607 | bfd_vma got_offset; | |
1608 | Elf_Internal_Rela rela; | |
1609 | ||
1610 | /* This symbol has an entry in the procedure linkage table. Set | |
1611 | it up. */ | |
1612 | BFD_ASSERT (h->dynindx != -1); | |
1613 | ||
1614 | splt = htab->splt; | |
1615 | sgot = htab->sgotplt; | |
1616 | srela = htab->srelplt; | |
1617 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); | |
1618 | ||
1619 | /* Get the index in the procedure linkage table which | |
1620 | corresponds to this symbol. This is the index of this symbol | |
1621 | in all the symbols for which we are making plt entries. The | |
1622 | first entry in the procedure linkage table is reserved. */ | |
1623 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; | |
1624 | ||
1625 | /* Get the offset into the .got table of the entry that | |
1626 | corresponds to this function. Each .got entry is 4 bytes. | |
1627 | The first three are reserved. */ | |
1628 | got_offset = (plt_index + 3) * 4; | |
1629 | ||
1630 | /* Fill in the entry in the procedure linkage table. */ | |
1631 | if (! info->shared) | |
1632 | { | |
1633 | /* TODO */ | |
1634 | } | |
1635 | else | |
1636 | { | |
1637 | /* TODO */ | |
1638 | } | |
1639 | ||
1640 | /* Fill in the entry in the global offset table. */ | |
1641 | bfd_put_32 (output_bfd, | |
1642 | (splt->output_section->vma | |
1643 | + splt->output_offset | |
1644 | + h->plt.offset | |
1645 | + 12), /* same offset */ | |
1646 | sgot->contents + got_offset); | |
1647 | ||
1648 | /* Fill in the entry in the .rela.plt section. */ | |
1649 | rela.r_offset = (sgot->output_section->vma | |
1650 | + sgot->output_offset | |
1651 | + got_offset); | |
1652 | rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_JMP_SLOT); | |
1653 | rela.r_addend = 0; | |
1654 | loc = srela->contents; | |
1655 | loc += plt_index * sizeof (Elf32_External_Rela); | |
1656 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
1657 | ||
1658 | if (!h->def_regular) | |
1659 | { | |
1660 | /* Mark the symbol as undefined, rather than as defined in | |
1661 | the .plt section. Leave the value alone. */ | |
1662 | sym->st_shndx = SHN_UNDEF; | |
1663 | } | |
1664 | ||
1665 | } | |
1666 | ||
1667 | if (h->got.offset != (bfd_vma) -1) | |
1668 | { | |
1669 | asection *sgot; | |
1670 | asection *srela; | |
1671 | Elf_Internal_Rela rela; | |
1672 | ||
1673 | /* This symbol has an entry in the global offset table. Set it | |
1674 | up. */ | |
1675 | sgot = htab->sgot; | |
1676 | srela = htab->srelgot; | |
1677 | BFD_ASSERT (sgot != NULL && srela != NULL); | |
1678 | ||
1679 | rela.r_offset = (sgot->output_section->vma | |
1680 | + sgot->output_offset | |
1681 | + (h->got.offset &~ 1)); | |
1682 | ||
1683 | /* If this is a -Bsymbolic link, and the symbol is defined | |
1684 | locally, we just want to emit a RELATIVE reloc. Likewise if | |
1685 | the symbol was forced to be local because of a version file. | |
1686 | The entry in the global offset table will already have been | |
1687 | initialized in the relocate_section function. */ | |
1688 | if (info->shared | |
1689 | && (info->symbolic | |
1690 | || h->dynindx == -1 | |
1691 | || h->forced_local) | |
1692 | && h->def_regular) | |
1693 | { | |
1694 | rela.r_info = ELF32_R_INFO (0, R_LM32_RELATIVE); | |
1695 | rela.r_addend = (h->root.u.def.value | |
1696 | + h->root.u.def.section->output_section->vma | |
1697 | + h->root.u.def.section->output_offset); | |
1698 | } | |
1699 | else | |
1700 | { | |
1701 | BFD_ASSERT ((h->got.offset & 1) == 0); | |
1702 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); | |
1703 | rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_GLOB_DAT); | |
1704 | rela.r_addend = 0; | |
1705 | } | |
1706 | ||
1707 | loc = srela->contents; | |
1708 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); | |
1709 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
1710 | ++srela->reloc_count; | |
1711 | } | |
1712 | ||
1713 | if (h->needs_copy) | |
1714 | { | |
1715 | asection *s; | |
1716 | Elf_Internal_Rela rela; | |
1717 | ||
1718 | /* This symbols needs a copy reloc. Set it up. */ | |
1719 | BFD_ASSERT (h->dynindx != -1 | |
1720 | && (h->root.type == bfd_link_hash_defined | |
1721 | || h->root.type == bfd_link_hash_defweak)); | |
1722 | ||
3d4d4302 | 1723 | s = bfd_get_linker_section (htab->root.dynobj, ".rela.bss"); |
84e94c90 NC |
1724 | BFD_ASSERT (s != NULL); |
1725 | ||
1726 | rela.r_offset = (h->root.u.def.value | |
1727 | + h->root.u.def.section->output_section->vma | |
1728 | + h->root.u.def.section->output_offset); | |
1729 | rela.r_info = ELF32_R_INFO (h->dynindx, R_LM32_COPY); | |
1730 | rela.r_addend = 0; | |
1731 | loc = s->contents; | |
1732 | loc += s->reloc_count * sizeof (Elf32_External_Rela); | |
1733 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); | |
1734 | ++s->reloc_count; | |
1735 | } | |
1736 | ||
1737 | /* Mark some specially defined symbols as absolute. */ | |
9637f6ef | 1738 | if (h == htab->root.hdynamic || h == htab->root.hgot) |
84e94c90 NC |
1739 | sym->st_shndx = SHN_ABS; |
1740 | ||
1741 | return TRUE; | |
1742 | } | |
1743 | ||
1744 | static enum elf_reloc_type_class | |
1745 | lm32_elf_reloc_type_class (const Elf_Internal_Rela *rela) | |
1746 | { | |
1747 | switch ((int) ELF32_R_TYPE (rela->r_info)) | |
1748 | { | |
1749 | case R_LM32_RELATIVE: return reloc_class_relative; | |
1750 | case R_LM32_JMP_SLOT: return reloc_class_plt; | |
1751 | case R_LM32_COPY: return reloc_class_copy; | |
1752 | default: return reloc_class_normal; | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | /* Adjust a symbol defined by a dynamic object and referenced by a | |
1757 | regular object. The current definition is in some section of the | |
1758 | dynamic object, but we're not including those sections. We have to | |
1759 | change the definition to something the rest of the link can | |
1760 | understand. */ | |
1761 | ||
1762 | static bfd_boolean | |
1763 | lm32_elf_adjust_dynamic_symbol (struct bfd_link_info *info, | |
1764 | struct elf_link_hash_entry *h) | |
1765 | { | |
1766 | struct elf_lm32_link_hash_table *htab; | |
1767 | struct elf_lm32_link_hash_entry *eh; | |
1768 | struct elf_lm32_dyn_relocs *p; | |
1769 | bfd *dynobj; | |
1770 | asection *s; | |
1771 | ||
1772 | dynobj = elf_hash_table (info)->dynobj; | |
1773 | ||
1774 | /* Make sure we know what is going on here. */ | |
1775 | BFD_ASSERT (dynobj != NULL | |
1776 | && (h->needs_plt | |
1777 | || h->u.weakdef != NULL | |
1778 | || (h->def_dynamic | |
1779 | && h->ref_regular | |
1780 | && !h->def_regular))); | |
1781 | ||
1782 | /* If this is a function, put it in the procedure linkage table. We | |
1783 | will fill in the contents of the procedure linkage table later, | |
1784 | when we know the address of the .got section. */ | |
1785 | if (h->type == STT_FUNC | |
1786 | || h->needs_plt) | |
1787 | { | |
1788 | if (! info->shared | |
1789 | && !h->def_dynamic | |
1790 | && !h->ref_dynamic | |
1791 | && h->root.type != bfd_link_hash_undefweak | |
1792 | && h->root.type != bfd_link_hash_undefined) | |
1793 | { | |
1794 | /* This case can occur if we saw a PLT reloc in an input | |
1795 | file, but the symbol was never referred to by a dynamic | |
1796 | object. In such a case, we don't actually need to build | |
1797 | a procedure linkage table, and we can just do a PCREL | |
1798 | reloc instead. */ | |
1799 | h->plt.offset = (bfd_vma) -1; | |
1800 | h->needs_plt = 0; | |
1801 | } | |
1802 | ||
1803 | return TRUE; | |
1804 | } | |
1805 | else | |
1806 | h->plt.offset = (bfd_vma) -1; | |
1807 | ||
1808 | /* If this is a weak symbol, and there is a real definition, the | |
1809 | processor independent code will have arranged for us to see the | |
1810 | real definition first, and we can just use the same value. */ | |
1811 | if (h->u.weakdef != NULL) | |
1812 | { | |
1813 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined | |
1814 | || h->u.weakdef->root.type == bfd_link_hash_defweak); | |
1815 | h->root.u.def.section = h->u.weakdef->root.u.def.section; | |
1816 | h->root.u.def.value = h->u.weakdef->root.u.def.value; | |
1817 | return TRUE; | |
1818 | } | |
1819 | ||
1820 | /* This is a reference to a symbol defined by a dynamic object which | |
1821 | is not a function. */ | |
1822 | ||
1823 | /* If we are creating a shared library, we must presume that the | |
1824 | only references to the symbol are via the global offset table. | |
1825 | For such cases we need not do anything here; the relocations will | |
1826 | be handled correctly by relocate_section. */ | |
1827 | if (info->shared) | |
1828 | return TRUE; | |
1829 | ||
1830 | /* If there are no references to this symbol that do not use the | |
1831 | GOT, we don't need to generate a copy reloc. */ | |
1832 | if (!h->non_got_ref) | |
1833 | return TRUE; | |
1834 | ||
1835 | /* If -z nocopyreloc was given, we won't generate them either. */ | |
1836 | if (info->nocopyreloc) | |
1837 | { | |
1838 | h->non_got_ref = 0; | |
1839 | return TRUE; | |
1840 | } | |
1841 | ||
1842 | eh = (struct elf_lm32_link_hash_entry *) h; | |
1843 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
1844 | { | |
1845 | s = p->sec->output_section; | |
1846 | if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) | |
1847 | break; | |
1848 | } | |
1849 | ||
1850 | /* If we didn't find any dynamic relocs in sections which needs the | |
1851 | copy reloc, then we'll be keeping the dynamic relocs and avoiding | |
1852 | the copy reloc. */ | |
1853 | if (p == NULL) | |
1854 | { | |
1855 | h->non_got_ref = 0; | |
1856 | return TRUE; | |
1857 | } | |
1858 | ||
84e94c90 NC |
1859 | /* We must allocate the symbol in our .dynbss section, which will |
1860 | become part of the .bss section of the executable. There will be | |
1861 | an entry for this symbol in the .dynsym section. The dynamic | |
1862 | object will contain position independent code, so all references | |
1863 | from the dynamic object to this symbol will go through the global | |
1864 | offset table. The dynamic linker will use the .dynsym entry to | |
1865 | determine the address it must put in the global offset table, so | |
1866 | both the dynamic object and the regular object will refer to the | |
1867 | same memory location for the variable. */ | |
1868 | ||
1869 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1870 | if (htab == NULL) |
1871 | return FALSE; | |
1872 | ||
84e94c90 NC |
1873 | s = htab->sdynbss; |
1874 | BFD_ASSERT (s != NULL); | |
1875 | ||
1876 | /* We must generate a R_LM32_COPY reloc to tell the dynamic linker | |
1877 | to copy the initial value out of the dynamic object and into the | |
1878 | runtime process image. We need to remember the offset into the | |
1879 | .rela.bss section we are going to use. */ | |
1d7e9d18 | 1880 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) |
84e94c90 NC |
1881 | { |
1882 | asection *srel; | |
1883 | ||
1884 | srel = htab->srelbss; | |
1885 | BFD_ASSERT (srel != NULL); | |
1886 | srel->size += sizeof (Elf32_External_Rela); | |
1887 | h->needs_copy = 1; | |
1888 | } | |
1889 | ||
1890 | return _bfd_elf_adjust_dynamic_copy (h, s); | |
1891 | } | |
1892 | ||
1893 | /* Allocate space in .plt, .got and associated reloc sections for | |
1894 | dynamic relocs. */ | |
1895 | ||
1896 | static bfd_boolean | |
1897 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) | |
1898 | { | |
1899 | struct bfd_link_info *info; | |
1900 | struct elf_lm32_link_hash_table *htab; | |
1901 | struct elf_lm32_link_hash_entry *eh; | |
1902 | struct elf_lm32_dyn_relocs *p; | |
1903 | ||
1904 | if (h->root.type == bfd_link_hash_indirect) | |
1905 | return TRUE; | |
1906 | ||
84e94c90 NC |
1907 | info = (struct bfd_link_info *) inf; |
1908 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
1909 | if (htab == NULL) |
1910 | return FALSE; | |
84e94c90 NC |
1911 | |
1912 | eh = (struct elf_lm32_link_hash_entry *) h; | |
1913 | ||
1914 | if (htab->root.dynamic_sections_created | |
1915 | && h->plt.refcount > 0) | |
1916 | { | |
1917 | /* Make sure this symbol is output as a dynamic symbol. | |
1918 | Undefined weak syms won't yet be marked as dynamic. */ | |
1919 | if (h->dynindx == -1 | |
1920 | && !h->forced_local) | |
1921 | { | |
1922 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1923 | return FALSE; | |
1924 | } | |
1925 | ||
1926 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) | |
1927 | { | |
1928 | asection *s = htab->splt; | |
1929 | ||
1930 | /* If this is the first .plt entry, make room for the special | |
1931 | first entry. */ | |
1932 | if (s->size == 0) | |
1933 | s->size += PLT_ENTRY_SIZE; | |
1934 | ||
1935 | h->plt.offset = s->size; | |
1936 | ||
1937 | /* If this symbol is not defined in a regular file, and we are | |
1938 | not generating a shared library, then set the symbol to this | |
1939 | location in the .plt. This is required to make function | |
1940 | pointers compare as equal between the normal executable and | |
1941 | the shared library. */ | |
1942 | if (! info->shared | |
1943 | && !h->def_regular) | |
1944 | { | |
1945 | h->root.u.def.section = s; | |
1946 | h->root.u.def.value = h->plt.offset; | |
1947 | } | |
1948 | ||
1949 | /* Make room for this entry. */ | |
1950 | s->size += PLT_ENTRY_SIZE; | |
1951 | ||
1952 | /* We also need to make an entry in the .got.plt section, which | |
1953 | will be placed in the .got section by the linker script. */ | |
1954 | htab->sgotplt->size += 4; | |
1955 | ||
1956 | /* We also need to make an entry in the .rel.plt section. */ | |
1957 | htab->srelplt->size += sizeof (Elf32_External_Rela); | |
1958 | } | |
1959 | else | |
1960 | { | |
1961 | h->plt.offset = (bfd_vma) -1; | |
1962 | h->needs_plt = 0; | |
1963 | } | |
1964 | } | |
1965 | else | |
1966 | { | |
1967 | h->plt.offset = (bfd_vma) -1; | |
1968 | h->needs_plt = 0; | |
1969 | } | |
1970 | ||
1971 | if (h->got.refcount > 0) | |
1972 | { | |
1973 | asection *s; | |
1974 | bfd_boolean dyn; | |
1975 | ||
1976 | /* Make sure this symbol is output as a dynamic symbol. | |
1977 | Undefined weak syms won't yet be marked as dynamic. */ | |
1978 | if (h->dynindx == -1 | |
1979 | && !h->forced_local) | |
1980 | { | |
1981 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
1982 | return FALSE; | |
1983 | } | |
1984 | ||
1985 | s = htab->sgot; | |
1986 | ||
1987 | h->got.offset = s->size; | |
1988 | s->size += 4; | |
1989 | dyn = htab->root.dynamic_sections_created; | |
1990 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) | |
1991 | htab->srelgot->size += sizeof (Elf32_External_Rela); | |
1992 | } | |
1993 | else | |
1994 | h->got.offset = (bfd_vma) -1; | |
1995 | ||
1996 | if (eh->dyn_relocs == NULL) | |
1997 | return TRUE; | |
1998 | ||
1999 | /* In the shared -Bsymbolic case, discard space allocated for | |
2000 | dynamic pc-relative relocs against symbols which turn out to be | |
2001 | defined in regular objects. For the normal shared case, discard | |
2002 | space for pc-relative relocs that have become local due to symbol | |
2003 | visibility changes. */ | |
2004 | ||
2005 | if (info->shared) | |
2006 | { | |
2007 | if (h->def_regular | |
2008 | && (h->forced_local | |
2009 | || info->symbolic)) | |
2010 | { | |
2011 | struct elf_lm32_dyn_relocs **pp; | |
2012 | ||
2013 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) | |
2014 | { | |
2015 | p->count -= p->pc_count; | |
2016 | p->pc_count = 0; | |
2017 | if (p->count == 0) | |
2018 | *pp = p->next; | |
2019 | else | |
2020 | pp = &p->next; | |
2021 | } | |
2022 | } | |
2023 | ||
2024 | /* Also discard relocs on undefined weak syms with non-default | |
2025 | visibility. */ | |
2026 | if (eh->dyn_relocs != NULL | |
2027 | && h->root.type == bfd_link_hash_undefweak) | |
2028 | { | |
2029 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) | |
2030 | eh->dyn_relocs = NULL; | |
2031 | ||
2032 | /* Make sure undefined weak symbols are output as a dynamic | |
2033 | symbol in PIEs. */ | |
2034 | else if (h->dynindx == -1 | |
2035 | && !h->forced_local) | |
2036 | { | |
2037 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2038 | return FALSE; | |
2039 | } | |
2040 | } | |
2041 | } | |
2042 | else | |
2043 | { | |
2044 | /* For the non-shared case, discard space for relocs against | |
2045 | symbols which turn out to need copy relocs or are not | |
2046 | dynamic. */ | |
2047 | ||
2048 | if (!h->non_got_ref | |
2049 | && ((h->def_dynamic | |
2050 | && !h->def_regular) | |
2051 | || (htab->root.dynamic_sections_created | |
2052 | && (h->root.type == bfd_link_hash_undefweak | |
2053 | || h->root.type == bfd_link_hash_undefined)))) | |
2054 | { | |
2055 | /* Make sure this symbol is output as a dynamic symbol. | |
2056 | Undefined weak syms won't yet be marked as dynamic. */ | |
2057 | if (h->dynindx == -1 | |
2058 | && !h->forced_local) | |
2059 | { | |
2060 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2061 | return FALSE; | |
2062 | } | |
2063 | ||
2064 | /* If that succeeded, we know we'll be keeping all the | |
2065 | relocs. */ | |
2066 | if (h->dynindx != -1) | |
2067 | goto keep; | |
2068 | } | |
2069 | ||
2070 | eh->dyn_relocs = NULL; | |
2071 | ||
2072 | keep: ; | |
2073 | } | |
2074 | ||
2075 | /* Finally, allocate space. */ | |
2076 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2077 | { | |
2078 | asection *sreloc = elf_section_data (p->sec)->sreloc; | |
2079 | sreloc->size += p->count * sizeof (Elf32_External_Rela); | |
2080 | } | |
2081 | ||
2082 | return TRUE; | |
2083 | } | |
2084 | ||
2085 | /* Find any dynamic relocs that apply to read-only sections. */ | |
2086 | ||
2087 | static bfd_boolean | |
2088 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) | |
2089 | { | |
2090 | struct elf_lm32_link_hash_entry *eh; | |
2091 | struct elf_lm32_dyn_relocs *p; | |
2092 | ||
84e94c90 NC |
2093 | eh = (struct elf_lm32_link_hash_entry *) h; |
2094 | for (p = eh->dyn_relocs; p != NULL; p = p->next) | |
2095 | { | |
2096 | asection *s = p->sec->output_section; | |
2097 | ||
2098 | if (s != NULL && (s->flags & SEC_READONLY) != 0) | |
2099 | { | |
2100 | struct bfd_link_info *info = (struct bfd_link_info *) inf; | |
2101 | ||
2102 | info->flags |= DF_TEXTREL; | |
2103 | ||
2104 | /* Not an error, just cut short the traversal. */ | |
2105 | return FALSE; | |
2106 | } | |
2107 | } | |
2108 | return TRUE; | |
2109 | } | |
2110 | ||
2111 | /* Set the sizes of the dynamic sections. */ | |
2112 | ||
2113 | static bfd_boolean | |
2114 | lm32_elf_size_dynamic_sections (bfd *output_bfd, | |
2115 | struct bfd_link_info *info) | |
2116 | { | |
2117 | struct elf_lm32_link_hash_table *htab; | |
2118 | bfd *dynobj; | |
2119 | asection *s; | |
2120 | bfd_boolean relocs; | |
2121 | bfd *ibfd; | |
2122 | ||
2123 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
2124 | if (htab == NULL) |
2125 | return FALSE; | |
2126 | ||
84e94c90 NC |
2127 | dynobj = htab->root.dynobj; |
2128 | BFD_ASSERT (dynobj != NULL); | |
2129 | ||
2130 | if (htab->root.dynamic_sections_created) | |
2131 | { | |
2132 | /* Set the contents of the .interp section to the interpreter. */ | |
2133 | if (info->executable) | |
2134 | { | |
3d4d4302 | 2135 | s = bfd_get_linker_section (dynobj, ".interp"); |
84e94c90 NC |
2136 | BFD_ASSERT (s != NULL); |
2137 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; | |
2138 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; | |
2139 | } | |
2140 | } | |
2141 | ||
2142 | /* Set up .got offsets for local syms, and space for local dynamic | |
2143 | relocs. */ | |
2144 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
2145 | { | |
2146 | bfd_signed_vma *local_got; | |
2147 | bfd_signed_vma *end_local_got; | |
2148 | bfd_size_type locsymcount; | |
2149 | Elf_Internal_Shdr *symtab_hdr; | |
2150 | asection *srel; | |
2151 | ||
2152 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) | |
2153 | continue; | |
2154 | ||
2155 | for (s = ibfd->sections; s != NULL; s = s->next) | |
2156 | { | |
2157 | struct elf_lm32_dyn_relocs *p; | |
2158 | ||
2159 | for (p = ((struct elf_lm32_dyn_relocs *) | |
2160 | elf_section_data (s)->local_dynrel); | |
2161 | p != NULL; | |
2162 | p = p->next) | |
2163 | { | |
2164 | if (! bfd_is_abs_section (p->sec) | |
2165 | && bfd_is_abs_section (p->sec->output_section)) | |
2166 | { | |
2167 | /* Input section has been discarded, either because | |
2168 | it is a copy of a linkonce section or due to | |
2169 | linker script /DISCARD/, so we'll be discarding | |
2170 | the relocs too. */ | |
2171 | } | |
2172 | else if (p->count != 0) | |
2173 | { | |
2174 | srel = elf_section_data (p->sec)->sreloc; | |
2175 | srel->size += p->count * sizeof (Elf32_External_Rela); | |
2176 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) | |
2177 | info->flags |= DF_TEXTREL; | |
2178 | } | |
2179 | } | |
2180 | } | |
2181 | ||
2182 | local_got = elf_local_got_refcounts (ibfd); | |
2183 | if (!local_got) | |
2184 | continue; | |
2185 | ||
2186 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2187 | locsymcount = symtab_hdr->sh_info; | |
2188 | end_local_got = local_got + locsymcount; | |
2189 | s = htab->sgot; | |
2190 | srel = htab->srelgot; | |
2191 | for (; local_got < end_local_got; ++local_got) | |
2192 | { | |
2193 | if (*local_got > 0) | |
2194 | { | |
2195 | *local_got = s->size; | |
2196 | s->size += 4; | |
2197 | if (info->shared) | |
2198 | srel->size += sizeof (Elf32_External_Rela); | |
2199 | } | |
2200 | else | |
2201 | *local_got = (bfd_vma) -1; | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | /* Allocate global sym .plt and .got entries, and space for global | |
2206 | sym dynamic relocs. */ | |
2207 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); | |
2208 | ||
2209 | /* We now have determined the sizes of the various dynamic sections. | |
2210 | Allocate memory for them. */ | |
2211 | relocs = FALSE; | |
2212 | for (s = dynobj->sections; s != NULL; s = s->next) | |
2213 | { | |
2214 | if ((s->flags & SEC_LINKER_CREATED) == 0) | |
2215 | continue; | |
2216 | ||
2217 | if (s == htab->splt | |
2218 | || s == htab->sgot | |
2219 | || s == htab->sgotplt | |
2220 | || s == htab->sdynbss) | |
2221 | { | |
2222 | /* Strip this section if we don't need it; see the | |
2223 | comment below. */ | |
2224 | } | |
2225 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) | |
2226 | { | |
2227 | if (s->size != 0 && s != htab->srelplt) | |
2228 | relocs = TRUE; | |
2229 | ||
2230 | /* We use the reloc_count field as a counter if we need | |
2231 | to copy relocs into the output file. */ | |
2232 | s->reloc_count = 0; | |
2233 | } | |
2234 | else | |
2235 | /* It's not one of our sections, so don't allocate space. */ | |
2236 | continue; | |
2237 | ||
2238 | if (s->size == 0) | |
2239 | { | |
2240 | /* If we don't need this section, strip it from the | |
2241 | output file. This is mostly to handle .rela.bss and | |
2242 | .rela.plt. We must create both sections in | |
2243 | create_dynamic_sections, because they must be created | |
2244 | before the linker maps input sections to output | |
2245 | sections. The linker does that before | |
2246 | adjust_dynamic_symbol is called, and it is that | |
2247 | function which decides whether anything needs to go | |
2248 | into these sections. */ | |
2249 | s->flags |= SEC_EXCLUDE; | |
2250 | continue; | |
2251 | } | |
2252 | ||
2253 | if ((s->flags & SEC_HAS_CONTENTS) == 0) | |
2254 | continue; | |
2255 | ||
2256 | /* Allocate memory for the section contents. We use bfd_zalloc | |
2257 | here in case unused entries are not reclaimed before the | |
2258 | section's contents are written out. This should not happen, | |
2259 | but this way if it does, we get a R_LM32_NONE reloc instead | |
2260 | of garbage. */ | |
2261 | s->contents = bfd_zalloc (dynobj, s->size); | |
2262 | if (s->contents == NULL) | |
2263 | return FALSE; | |
2264 | } | |
2265 | ||
2266 | if (htab->root.dynamic_sections_created) | |
2267 | { | |
2268 | /* Add some entries to the .dynamic section. We fill in the | |
2269 | values later, in lm32_elf_finish_dynamic_sections, but we | |
2270 | must add the entries now so that we get the correct size for | |
2271 | the .dynamic section. The DT_DEBUG entry is filled in by the | |
2272 | dynamic linker and used by the debugger. */ | |
2273 | #define add_dynamic_entry(TAG, VAL) \ | |
2274 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) | |
2275 | ||
2276 | if (info->executable) | |
2277 | { | |
2278 | if (! add_dynamic_entry (DT_DEBUG, 0)) | |
2279 | return FALSE; | |
2280 | } | |
2281 | ||
2282 | if (htab->splt->size != 0) | |
2283 | { | |
2284 | if (! add_dynamic_entry (DT_PLTGOT, 0) | |
2285 | || ! add_dynamic_entry (DT_PLTRELSZ, 0) | |
2286 | || ! add_dynamic_entry (DT_PLTREL, DT_RELA) | |
2287 | || ! add_dynamic_entry (DT_JMPREL, 0)) | |
2288 | return FALSE; | |
2289 | } | |
2290 | ||
2291 | if (relocs) | |
2292 | { | |
2293 | if (! add_dynamic_entry (DT_RELA, 0) | |
2294 | || ! add_dynamic_entry (DT_RELASZ, 0) | |
2295 | || ! add_dynamic_entry (DT_RELAENT, | |
2296 | sizeof (Elf32_External_Rela))) | |
2297 | return FALSE; | |
2298 | ||
2299 | /* If any dynamic relocs apply to a read-only section, | |
2300 | then we need a DT_TEXTREL entry. */ | |
2301 | if ((info->flags & DF_TEXTREL) == 0) | |
2302 | elf_link_hash_traverse (&htab->root, readonly_dynrelocs, | |
2303 | info); | |
2304 | ||
2305 | if ((info->flags & DF_TEXTREL) != 0) | |
2306 | { | |
2307 | if (! add_dynamic_entry (DT_TEXTREL, 0)) | |
2308 | return FALSE; | |
2309 | } | |
2310 | } | |
2311 | } | |
2312 | #undef add_dynamic_entry | |
2313 | ||
2314 | /* Allocate .rofixup section. */ | |
2315 | if (IS_FDPIC (output_bfd)) | |
2316 | { | |
2317 | struct weak_symbol_list *list_start = NULL, *list_end = NULL; | |
2318 | int rgot_weak_count = 0; | |
2319 | int r32_count = 0; | |
2320 | int rgot_count = 0; | |
2321 | /* Look for deleted sections. */ | |
2322 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) | |
2323 | { | |
2324 | for (s = ibfd->sections; s != NULL; s = s->next) | |
2325 | { | |
2326 | if (s->reloc_count) | |
2327 | { | |
2328 | /* Count relocs that need .rofixup entires. */ | |
2329 | Elf_Internal_Rela *internal_relocs, *end; | |
2330 | internal_relocs = elf_section_data (s)->relocs; | |
2331 | if (internal_relocs == NULL) | |
2332 | internal_relocs = (_bfd_elf_link_read_relocs (ibfd, s, NULL, NULL, FALSE)); | |
2333 | if (internal_relocs != NULL) | |
2334 | { | |
2335 | end = internal_relocs + s->reloc_count; | |
2336 | while (internal_relocs < end) | |
2337 | { | |
2338 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2339 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (ibfd); | |
2340 | unsigned long r_symndx; | |
2341 | struct elf_link_hash_entry *h; | |
2342 | ||
2343 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; | |
2344 | sym_hashes = elf_sym_hashes (ibfd); | |
2345 | r_symndx = ELF32_R_SYM (internal_relocs->r_info); | |
2346 | h = NULL; | |
2347 | if (r_symndx < symtab_hdr->sh_info) | |
2348 | { | |
2349 | } | |
2350 | else | |
2351 | { | |
2352 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; | |
2353 | while (h->root.type == bfd_link_hash_indirect | |
2354 | || h->root.type == bfd_link_hash_warning) | |
2355 | h = (struct elf_link_hash_entry *) h->root.u.i.link; | |
2356 | } | |
2357 | ||
2358 | /* Don't generate entries for weak symbols. */ | |
2359 | if (!h || (h && h->root.type != bfd_link_hash_undefweak)) | |
2360 | { | |
dbaa2011 | 2361 | if (!discarded_section (s) && !((bfd_get_section_flags (ibfd, s) & SEC_ALLOC) == 0)) |
84e94c90 NC |
2362 | { |
2363 | switch (ELF32_R_TYPE (internal_relocs->r_info)) | |
2364 | { | |
2365 | case R_LM32_32: | |
2366 | r32_count++; | |
2367 | break; | |
2368 | case R_LM32_16_GOT: | |
2369 | rgot_count++; | |
2370 | break; | |
2371 | } | |
2372 | } | |
2373 | } | |
2374 | else | |
2375 | { | |
2376 | struct weak_symbol_list *current, *new_entry; | |
2377 | /* Is this symbol already in the list? */ | |
2378 | for (current = list_start; current; current = current->next) | |
2379 | { | |
2380 | if (!strcmp (current->name, h->root.root.string)) | |
2381 | break; | |
2382 | } | |
dbaa2011 | 2383 | if (!current && !discarded_section (s) && (bfd_get_section_flags (ibfd, s) & SEC_ALLOC)) |
84e94c90 NC |
2384 | { |
2385 | /* Will this have an entry in the GOT. */ | |
2386 | if (ELF32_R_TYPE (internal_relocs->r_info) == R_LM32_16_GOT) | |
2387 | { | |
2388 | /* Create a new entry. */ | |
2389 | new_entry = malloc (sizeof (struct weak_symbol_list)); | |
2390 | if (!new_entry) | |
2391 | return FALSE; | |
2392 | new_entry->name = h->root.root.string; | |
2393 | new_entry->next = NULL; | |
2394 | /* Add to list */ | |
2395 | if (list_start == NULL) | |
2396 | { | |
2397 | list_start = new_entry; | |
2398 | list_end = new_entry; | |
2399 | } | |
2400 | else | |
2401 | { | |
2402 | list_end->next = new_entry; | |
2403 | list_end = new_entry; | |
2404 | } | |
2405 | /* Increase count of undefined weak symbols in the got. */ | |
2406 | rgot_weak_count++; | |
2407 | } | |
2408 | } | |
2409 | } | |
2410 | internal_relocs++; | |
2411 | } | |
2412 | } | |
2413 | else | |
2414 | return FALSE; | |
2415 | } | |
2416 | } | |
2417 | } | |
2418 | /* Free list. */ | |
2419 | while (list_start) | |
2420 | { | |
2421 | list_end = list_start->next; | |
2422 | free (list_start); | |
2423 | list_start = list_end; | |
2424 | } | |
2425 | ||
2426 | /* Size sections. */ | |
2427 | lm32fdpic_fixup32_section (info)->size = (r32_count + (htab->sgot->size / 4) - rgot_weak_count + 1) * 4; | |
2428 | if (lm32fdpic_fixup32_section (info)->size == 0) | |
2429 | lm32fdpic_fixup32_section (info)->flags |= SEC_EXCLUDE; | |
2430 | else | |
2431 | { | |
2432 | lm32fdpic_fixup32_section (info)->contents = | |
2433 | bfd_zalloc (dynobj, lm32fdpic_fixup32_section (info)->size); | |
2434 | if (lm32fdpic_fixup32_section (info)->contents == NULL) | |
2435 | return FALSE; | |
2436 | } | |
2437 | } | |
2438 | ||
2439 | return TRUE; | |
2440 | } | |
2441 | ||
2442 | /* Create dynamic sections when linking against a dynamic object. */ | |
2443 | ||
2444 | static bfd_boolean | |
2445 | lm32_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) | |
2446 | { | |
2447 | struct elf_lm32_link_hash_table *htab; | |
2448 | flagword flags, pltflags; | |
2449 | asection *s; | |
2450 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); | |
2451 | int ptralign = 2; /* 32bit */ | |
2452 | ||
2453 | htab = lm32_elf_hash_table (info); | |
4dfe6ac6 NC |
2454 | if (htab == NULL) |
2455 | return FALSE; | |
84e94c90 NC |
2456 | |
2457 | /* Make sure we have a GOT - For the case where we have a dynamic object | |
2458 | but none of the relocs in check_relocs */ | |
2459 | if (! create_got_section (abfd, info)) | |
2460 | return FALSE; | |
2461 | if (IS_FDPIC (abfd) && (htab->sfixup32 == NULL)) | |
2462 | { | |
2463 | if (! create_rofixup_section (abfd, info)) | |
2464 | return FALSE; | |
2465 | } | |
2466 | ||
2467 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and | |
2468 | .rel[a].bss sections. */ | |
2469 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY | |
2470 | | SEC_LINKER_CREATED); | |
2471 | ||
2472 | pltflags = flags; | |
2473 | pltflags |= SEC_CODE; | |
2474 | if (bed->plt_not_loaded) | |
2475 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); | |
2476 | if (bed->plt_readonly) | |
2477 | pltflags |= SEC_READONLY; | |
2478 | ||
3d4d4302 | 2479 | s = bfd_make_section_anyway_with_flags (abfd, ".plt", pltflags); |
84e94c90 NC |
2480 | htab->splt = s; |
2481 | if (s == NULL | |
2482 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) | |
2483 | return FALSE; | |
2484 | ||
2485 | if (bed->want_plt_sym) | |
2486 | { | |
2487 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the | |
2488 | .plt section. */ | |
2489 | struct bfd_link_hash_entry *bh = NULL; | |
2490 | struct elf_link_hash_entry *h; | |
2491 | ||
2492 | if (! (_bfd_generic_link_add_one_symbol | |
2493 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, | |
2494 | (bfd_vma) 0, NULL, FALSE, | |
2495 | get_elf_backend_data (abfd)->collect, &bh))) | |
2496 | return FALSE; | |
2497 | h = (struct elf_link_hash_entry *) bh; | |
2498 | h->def_regular = 1; | |
2499 | h->type = STT_OBJECT; | |
2500 | htab->root.hplt = h; | |
2501 | ||
2502 | if (info->shared | |
2503 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) | |
2504 | return FALSE; | |
2505 | } | |
2506 | ||
3d4d4302 AM |
2507 | s = bfd_make_section_anyway_with_flags (abfd, |
2508 | bed->default_use_rela_p | |
2509 | ? ".rela.plt" : ".rel.plt", | |
2510 | flags | SEC_READONLY); | |
84e94c90 NC |
2511 | htab->srelplt = s; |
2512 | if (s == NULL | |
2513 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2514 | return FALSE; | |
2515 | ||
2516 | if (htab->sgot == NULL | |
2517 | && ! create_got_section (abfd, info)) | |
2518 | return FALSE; | |
2519 | ||
84e94c90 NC |
2520 | if (bed->want_dynbss) |
2521 | { | |
2522 | /* The .dynbss section is a place to put symbols which are defined | |
2523 | by dynamic objects, are referenced by regular objects, and are | |
2524 | not functions. We must allocate space for them in the process | |
2525 | image and use a R_*_COPY reloc to tell the dynamic linker to | |
2526 | initialize them at run time. The linker script puts the .dynbss | |
2527 | section into the .bss section of the final image. */ | |
3d4d4302 AM |
2528 | s = bfd_make_section_anyway_with_flags (abfd, ".dynbss", |
2529 | SEC_ALLOC | SEC_LINKER_CREATED); | |
84e94c90 NC |
2530 | htab->sdynbss = s; |
2531 | if (s == NULL) | |
2532 | return FALSE; | |
2533 | /* The .rel[a].bss section holds copy relocs. This section is not | |
2534 | normally needed. We need to create it here, though, so that the | |
2535 | linker will map it to an output section. We can't just create it | |
2536 | only if we need it, because we will not know whether we need it | |
2537 | until we have seen all the input files, and the first time the | |
2538 | main linker code calls BFD after examining all the input files | |
2539 | (size_dynamic_sections) the input sections have already been | |
2540 | mapped to the output sections. If the section turns out not to | |
2541 | be needed, we can discard it later. We will never need this | |
2542 | section when generating a shared object, since they do not use | |
2543 | copy relocs. */ | |
2544 | if (! info->shared) | |
2545 | { | |
3d4d4302 AM |
2546 | s = bfd_make_section_anyway_with_flags (abfd, |
2547 | (bed->default_use_rela_p | |
2548 | ? ".rela.bss" : ".rel.bss"), | |
2549 | flags | SEC_READONLY); | |
84e94c90 NC |
2550 | htab->srelbss = s; |
2551 | if (s == NULL | |
2552 | || ! bfd_set_section_alignment (abfd, s, ptralign)) | |
2553 | return FALSE; | |
2554 | } | |
2555 | } | |
2556 | ||
2557 | return TRUE; | |
2558 | } | |
2559 | ||
2560 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ | |
2561 | ||
2562 | static void | |
2563 | lm32_elf_copy_indirect_symbol (struct bfd_link_info *info, | |
2564 | struct elf_link_hash_entry *dir, | |
2565 | struct elf_link_hash_entry *ind) | |
2566 | { | |
2567 | struct elf_lm32_link_hash_entry * edir; | |
2568 | struct elf_lm32_link_hash_entry * eind; | |
2569 | ||
2570 | edir = (struct elf_lm32_link_hash_entry *) dir; | |
2571 | eind = (struct elf_lm32_link_hash_entry *) ind; | |
2572 | ||
2573 | if (eind->dyn_relocs != NULL) | |
2574 | { | |
2575 | if (edir->dyn_relocs != NULL) | |
2576 | { | |
2577 | struct elf_lm32_dyn_relocs **pp; | |
2578 | struct elf_lm32_dyn_relocs *p; | |
2579 | ||
2580 | /* Add reloc counts against the indirect sym to the direct sym | |
2581 | list. Merge any entries against the same section. */ | |
2582 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) | |
2583 | { | |
2584 | struct elf_lm32_dyn_relocs *q; | |
2585 | ||
2586 | for (q = edir->dyn_relocs; q != NULL; q = q->next) | |
2587 | if (q->sec == p->sec) | |
2588 | { | |
2589 | q->pc_count += p->pc_count; | |
2590 | q->count += p->count; | |
2591 | *pp = p->next; | |
2592 | break; | |
2593 | } | |
2594 | if (q == NULL) | |
2595 | pp = &p->next; | |
2596 | } | |
2597 | *pp = edir->dyn_relocs; | |
2598 | } | |
2599 | ||
2600 | edir->dyn_relocs = eind->dyn_relocs; | |
2601 | eind->dyn_relocs = NULL; | |
2602 | } | |
2603 | ||
2604 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); | |
2605 | } | |
2606 | ||
2607 | static bfd_boolean | |
04c3a755 | 2608 | lm32_elf_always_size_sections (bfd *output_bfd, struct bfd_link_info *info) |
84e94c90 NC |
2609 | { |
2610 | if (!info->relocatable) | |
2611 | { | |
04c3a755 NS |
2612 | if (!bfd_elf_stack_segment_size (output_bfd, info, |
2613 | "__stacksize", DEFAULT_STACK_SIZE)) | |
2614 | return FALSE; | |
84e94c90 | 2615 | |
84e94c90 | 2616 | asection *sec = bfd_get_section_by_name (output_bfd, ".stack"); |
84e94c90 | 2617 | if (sec) |
04c3a755 | 2618 | sec->size = info->stacksize >= 0 ? info->stacksize : 0; |
84e94c90 NC |
2619 | } |
2620 | ||
2621 | return TRUE; | |
2622 | } | |
2623 | ||
84e94c90 NC |
2624 | static bfd_boolean |
2625 | lm32_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
2626 | { | |
2627 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2628 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2629 | return TRUE; | |
2630 | ||
2631 | BFD_ASSERT (!elf_flags_init (obfd) | |
2632 | || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags); | |
2633 | ||
2634 | elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags; | |
2635 | elf_flags_init (obfd) = TRUE; | |
2636 | ||
2637 | /* Copy object attributes. */ | |
2638 | _bfd_elf_copy_obj_attributes (ibfd, obfd); | |
2639 | ||
2640 | return TRUE; | |
2641 | } | |
2642 | ||
2643 | ||
2644 | static bfd_boolean | |
2645 | lm32_elf_fdpic_copy_private_bfd_data (bfd *ibfd, bfd *obfd) | |
2646 | { | |
2647 | unsigned i; | |
2648 | ||
2649 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour | |
2650 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) | |
2651 | return TRUE; | |
2652 | ||
2653 | if (! lm32_elf_copy_private_bfd_data (ibfd, obfd)) | |
2654 | return FALSE; | |
2655 | ||
2656 | if (! elf_tdata (ibfd) || ! elf_tdata (ibfd)->phdr | |
2657 | || ! elf_tdata (obfd) || ! elf_tdata (obfd)->phdr) | |
2658 | return TRUE; | |
2659 | ||
2660 | /* Copy the stack size. */ | |
2661 | for (i = 0; i < elf_elfheader (ibfd)->e_phnum; i++) | |
2662 | if (elf_tdata (ibfd)->phdr[i].p_type == PT_GNU_STACK) | |
2663 | { | |
2664 | Elf_Internal_Phdr *iphdr = &elf_tdata (ibfd)->phdr[i]; | |
2665 | ||
2666 | for (i = 0; i < elf_elfheader (obfd)->e_phnum; i++) | |
2667 | if (elf_tdata (obfd)->phdr[i].p_type == PT_GNU_STACK) | |
2668 | { | |
2669 | memcpy (&elf_tdata (obfd)->phdr[i], iphdr, sizeof (*iphdr)); | |
2670 | ||
2671 | /* Rewrite the phdrs, since we're only called after they were first written. */ | |
2672 | if (bfd_seek (obfd, (bfd_signed_vma) get_elf_backend_data (obfd) | |
2673 | ->s->sizeof_ehdr, SEEK_SET) != 0 | |
2674 | || get_elf_backend_data (obfd)->s->write_out_phdrs (obfd, elf_tdata (obfd)->phdr, | |
2675 | elf_elfheader (obfd)->e_phnum) != 0) | |
2676 | return FALSE; | |
2677 | break; | |
2678 | } | |
2679 | ||
2680 | break; | |
2681 | } | |
2682 | ||
2683 | return TRUE; | |
2684 | } | |
2685 | ||
2686 | ||
2687 | #define ELF_ARCH bfd_arch_lm32 | |
ae95ffa6 | 2688 | #define ELF_TARGET_ID LM32_ELF_DATA |
84e94c90 NC |
2689 | #define ELF_MACHINE_CODE EM_LATTICEMICO32 |
2690 | #define ELF_MAXPAGESIZE 0x1000 | |
2691 | ||
2692 | #define TARGET_BIG_SYM bfd_elf32_lm32_vec | |
2693 | #define TARGET_BIG_NAME "elf32-lm32" | |
2694 | ||
2695 | #define bfd_elf32_bfd_reloc_type_lookup lm32_reloc_type_lookup | |
2696 | #define bfd_elf32_bfd_reloc_name_lookup lm32_reloc_name_lookup | |
2697 | #define elf_info_to_howto lm32_info_to_howto_rela | |
2698 | #define elf_info_to_howto_rel 0 | |
2699 | #define elf_backend_rela_normal 1 | |
2700 | #define elf_backend_object_p lm32_elf_object_p | |
2701 | #define elf_backend_final_write_processing lm32_elf_final_write_processing | |
04c3a755 | 2702 | #define elf_backend_stack_align 8 |
84e94c90 NC |
2703 | #define elf_backend_can_gc_sections 1 |
2704 | #define elf_backend_can_refcount 1 | |
2705 | #define elf_backend_gc_mark_hook lm32_elf_gc_mark_hook | |
2706 | #define elf_backend_gc_sweep_hook lm32_elf_gc_sweep_hook | |
2707 | #define elf_backend_plt_readonly 1 | |
2708 | #define elf_backend_want_got_plt 1 | |
2709 | #define elf_backend_want_plt_sym 0 | |
2710 | #define elf_backend_got_header_size 12 | |
2711 | #define bfd_elf32_bfd_link_hash_table_create lm32_elf_link_hash_table_create | |
2712 | #define elf_backend_check_relocs lm32_elf_check_relocs | |
2713 | #define elf_backend_reloc_type_class lm32_elf_reloc_type_class | |
2714 | #define elf_backend_copy_indirect_symbol lm32_elf_copy_indirect_symbol | |
2715 | #define elf_backend_size_dynamic_sections lm32_elf_size_dynamic_sections | |
2716 | #define elf_backend_omit_section_dynsym ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) | |
2717 | #define elf_backend_create_dynamic_sections lm32_elf_create_dynamic_sections | |
2718 | #define elf_backend_finish_dynamic_sections lm32_elf_finish_dynamic_sections | |
2719 | #define elf_backend_adjust_dynamic_symbol lm32_elf_adjust_dynamic_symbol | |
2720 | #define elf_backend_finish_dynamic_symbol lm32_elf_finish_dynamic_symbol | |
2721 | #define elf_backend_relocate_section lm32_elf_relocate_section | |
2722 | ||
2723 | #include "elf32-target.h" | |
2724 | ||
2725 | #undef ELF_MAXPAGESIZE | |
2726 | #define ELF_MAXPAGESIZE 0x4000 | |
2727 | ||
2728 | ||
2729 | #undef TARGET_BIG_SYM | |
2730 | #define TARGET_BIG_SYM bfd_elf32_lm32fdpic_vec | |
2731 | #undef TARGET_BIG_NAME | |
2732 | #define TARGET_BIG_NAME "elf32-lm32fdpic" | |
2733 | #undef elf32_bed | |
2734 | #define elf32_bed elf32_lm32fdpic_bed | |
2735 | ||
2736 | #undef elf_backend_always_size_sections | |
2737 | #define elf_backend_always_size_sections lm32_elf_always_size_sections | |
84e94c90 NC |
2738 | #undef bfd_elf32_bfd_copy_private_bfd_data |
2739 | #define bfd_elf32_bfd_copy_private_bfd_data lm32_elf_fdpic_copy_private_bfd_data | |
2740 | ||
2741 | #include "elf32-target.h" |