1 /* MIPS-specific support for 32-bit ELF
2 Copyright (C) 1993-2022 Free Software Foundation, Inc.
3
4 Most of the information added by Ian Lance Taylor, Cygnus Support,
5 <ian@cygnus.com>.
6 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
7 <mark@codesourcery.com>
8 Traditional MIPS targets support added by Koundinya.K, Dansk Data
9 Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
10
11 This file is part of BFD, the Binary File Descriptor library.
12
13 This program is free software; you can redistribute it and/or modify
14 it under the terms of the GNU General Public License as published by
15 the Free Software Foundation; either version 3 of the License, or
16 (at your option) any later version.
17
18 This program is distributed in the hope that it will be useful,
19 but WITHOUT ANY WARRANTY; without even the implied warranty of
20 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 GNU General Public License for more details.
22
23 You should have received a copy of the GNU General Public License
24 along with this program; if not, write to the Free Software
25 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
26 MA 02110-1301, USA. */
27
28
29 /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
30 different MIPS ELF from other targets. This matters when linking.
31 This file supports both, switching at runtime. */
32
33 #include "sysdep.h"
34 #include "bfd.h"
35 #include "libbfd.h"
36 #include "bfdlink.h"
37 #include "genlink.h"
38 #include "elf-bfd.h"
39 #include "elfxx-mips.h"
40 #include "elf/mips.h"
41 #include "elf-vxworks.h"
42
43 /* Get the ECOFF swapping routines. */
44 #include "coff/sym.h"
45 #include "coff/symconst.h"
46 #include "coff/internal.h"
47 #include "coff/ecoff.h"
48 #include "coff/mips.h"
49 #define ECOFF_SIGNED_32
50 #include "ecoffswap.h"
51
52 static bfd_reloc_status_type gprel32_with_gp
53 (bfd *, asymbol *, arelent *, asection *, bool, void *, bfd_vma);
54 static bfd_reloc_status_type mips_elf_gprel32_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_reloc_status_type mips32_64bit_reloc
57 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
58 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
59 (bfd *, bfd_reloc_code_real_type);
60 static bool mips_info_to_howto_rel
61 (bfd *, arelent *, Elf_Internal_Rela *);
62 static bool mips_info_to_howto_rela
63 (bfd *, arelent *, Elf_Internal_Rela *);
64 static bool mips_elf_sym_is_global
65 (bfd *, asymbol *);
66 static bool mips_elf32_elfsym_local_is_section
67 (bfd *);
68 static bool mips_elf32_object_p
69 (bfd *);
70 static bool mips_elf_is_local_label_name
71 (bfd *, const char *);
72 static bfd_reloc_status_type mips16_gprel_reloc
73 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
74 static bfd_reloc_status_type mips_elf_final_gp
75 (bfd *, asymbol *, bool, char **, bfd_vma *);
76 static bool mips_elf_assign_gp
77 (bfd *, bfd_vma *);
78 static bool elf32_mips_grok_prstatus
79 (bfd *, Elf_Internal_Note *);
80 static bool elf32_mips_grok_psinfo
81 (bfd *, Elf_Internal_Note *);
82 static irix_compat_t elf32_mips_irix_compat
83 (bfd *);
84
85 extern const bfd_target mips_elf32_be_vec;
86 extern const bfd_target mips_elf32_le_vec;
87
88 /* Nonzero if ABFD is using the N32 ABI. */
89 #define ABI_N32_P(abfd) \
90 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
91
92 /* Whether we are trying to be compatible with IRIX at all. */
93 #define SGI_COMPAT(abfd) \
94 (elf32_mips_irix_compat (abfd) != ict_none)
95
96 /* The number of local .got entries we reserve. */
97 #define MIPS_RESERVED_GOTNO (2)
98
99 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
100 from smaller values. Start with zero, widen, *then* decrement. */
101 #define MINUS_ONE (((bfd_vma)0) - 1)
102
103 /* The relocation table used for SHT_REL sections. */
104
105 static reloc_howto_type elf_mips_howto_table_rel[] =
106 {
107 /* No relocation. */
108 HOWTO (R_MIPS_NONE, /* type */
109 0, /* rightshift */
110 0, /* size */
111 0, /* bitsize */
112 false, /* pc_relative */
113 0, /* bitpos */
114 complain_overflow_dont, /* complain_on_overflow */
115 _bfd_mips_elf_generic_reloc, /* special_function */
116 "R_MIPS_NONE", /* name */
117 false, /* partial_inplace */
118 0, /* src_mask */
119 0, /* dst_mask */
120 false), /* pcrel_offset */
121
122 /* 16 bit relocation. */
123 HOWTO (R_MIPS_16, /* type */
124 0, /* rightshift */
125 4, /* size */
126 16, /* bitsize */
127 false, /* pc_relative */
128 0, /* bitpos */
129 complain_overflow_signed, /* complain_on_overflow */
130 _bfd_mips_elf_generic_reloc, /* special_function */
131 "R_MIPS_16", /* name */
132 true, /* partial_inplace */
133 0x0000ffff, /* src_mask */
134 0x0000ffff, /* dst_mask */
135 false), /* pcrel_offset */
136
137 /* 32 bit relocation. */
138 HOWTO (R_MIPS_32, /* type */
139 0, /* rightshift */
140 4, /* size */
141 32, /* bitsize */
142 false, /* pc_relative */
143 0, /* bitpos */
144 complain_overflow_dont, /* complain_on_overflow */
145 _bfd_mips_elf_generic_reloc, /* special_function */
146 "R_MIPS_32", /* name */
147 true, /* partial_inplace */
148 0xffffffff, /* src_mask */
149 0xffffffff, /* dst_mask */
150 false), /* pcrel_offset */
151
152 /* 32 bit symbol relative relocation. */
153 HOWTO (R_MIPS_REL32, /* type */
154 0, /* rightshift */
155 4, /* size */
156 32, /* bitsize */
157 false, /* pc_relative */
158 0, /* bitpos */
159 complain_overflow_dont, /* complain_on_overflow */
160 _bfd_mips_elf_generic_reloc, /* special_function */
161 "R_MIPS_REL32", /* name */
162 true, /* partial_inplace */
163 0xffffffff, /* src_mask */
164 0xffffffff, /* dst_mask */
165 false), /* pcrel_offset */
166
167 /* 26 bit jump address. */
168 HOWTO (R_MIPS_26, /* type */
169 2, /* rightshift */
170 4, /* size */
171 26, /* bitsize */
172 false, /* pc_relative */
173 0, /* bitpos */
174 complain_overflow_dont, /* complain_on_overflow */
175 /* This needs complex overflow
176 detection, because the upper four
177 bits must match the PC + 4. */
178 _bfd_mips_elf_generic_reloc, /* special_function */
179 "R_MIPS_26", /* name */
180 true, /* partial_inplace */
181 0x03ffffff, /* src_mask */
182 0x03ffffff, /* dst_mask */
183 false), /* pcrel_offset */
184
185 /* High 16 bits of symbol value. */
186 HOWTO (R_MIPS_HI16, /* type */
187 16, /* rightshift */
188 4, /* size */
189 16, /* bitsize */
190 false, /* pc_relative */
191 0, /* bitpos */
192 complain_overflow_dont, /* complain_on_overflow */
193 _bfd_mips_elf_hi16_reloc, /* special_function */
194 "R_MIPS_HI16", /* name */
195 true, /* partial_inplace */
196 0x0000ffff, /* src_mask */
197 0x0000ffff, /* dst_mask */
198 false), /* pcrel_offset */
199
200 /* Low 16 bits of symbol value. */
201 HOWTO (R_MIPS_LO16, /* type */
202 0, /* rightshift */
203 4, /* size */
204 16, /* bitsize */
205 false, /* pc_relative */
206 0, /* bitpos */
207 complain_overflow_dont, /* complain_on_overflow */
208 _bfd_mips_elf_lo16_reloc, /* special_function */
209 "R_MIPS_LO16", /* name */
210 true, /* partial_inplace */
211 0x0000ffff, /* src_mask */
212 0x0000ffff, /* dst_mask */
213 false), /* pcrel_offset */
214
215 /* GP relative reference. */
216 HOWTO (R_MIPS_GPREL16, /* type */
217 0, /* rightshift */
218 4, /* size */
219 16, /* bitsize */
220 false, /* pc_relative */
221 0, /* bitpos */
222 complain_overflow_signed, /* complain_on_overflow */
223 _bfd_mips_elf32_gprel16_reloc, /* special_function */
224 "R_MIPS_GPREL16", /* name */
225 true, /* partial_inplace */
226 0x0000ffff, /* src_mask */
227 0x0000ffff, /* dst_mask */
228 false), /* pcrel_offset */
229
230 /* Reference to literal section. */
231 HOWTO (R_MIPS_LITERAL, /* type */
232 0, /* rightshift */
233 4, /* size */
234 16, /* bitsize */
235 false, /* pc_relative */
236 0, /* bitpos */
237 complain_overflow_signed, /* complain_on_overflow */
238 _bfd_mips_elf32_gprel16_reloc, /* special_function */
239 "R_MIPS_LITERAL", /* name */
240 true, /* partial_inplace */
241 0x0000ffff, /* src_mask */
242 0x0000ffff, /* dst_mask */
243 false), /* pcrel_offset */
244
245 /* Reference to global offset table. */
246 HOWTO (R_MIPS_GOT16, /* type */
247 0, /* rightshift */
248 4, /* size */
249 16, /* bitsize */
250 false, /* pc_relative */
251 0, /* bitpos */
252 complain_overflow_signed, /* complain_on_overflow */
253 _bfd_mips_elf_got16_reloc, /* special_function */
254 "R_MIPS_GOT16", /* name */
255 true, /* partial_inplace */
256 0x0000ffff, /* src_mask */
257 0x0000ffff, /* dst_mask */
258 false), /* pcrel_offset */
259
260 /* 16 bit PC relative reference. Note that the ABI document has a typo
261 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
262 We do the right thing here. */
263 HOWTO (R_MIPS_PC16, /* type */
264 2, /* rightshift */
265 4, /* size */
266 16, /* bitsize */
267 true, /* pc_relative */
268 0, /* bitpos */
269 complain_overflow_signed, /* complain_on_overflow */
270 _bfd_mips_elf_generic_reloc, /* special_function */
271 "R_MIPS_PC16", /* name */
272 true, /* partial_inplace */
273 0x0000ffff, /* src_mask */
274 0x0000ffff, /* dst_mask */
275 true), /* pcrel_offset */
276
277 /* 16 bit call through global offset table. */
278 HOWTO (R_MIPS_CALL16, /* type */
279 0, /* rightshift */
280 4, /* size */
281 16, /* bitsize */
282 false, /* pc_relative */
283 0, /* bitpos */
284 complain_overflow_signed, /* complain_on_overflow */
285 _bfd_mips_elf_generic_reloc, /* special_function */
286 "R_MIPS_CALL16", /* name */
287 true, /* partial_inplace */
288 0x0000ffff, /* src_mask */
289 0x0000ffff, /* dst_mask */
290 false), /* pcrel_offset */
291
292 /* 32 bit GP relative reference. */
293 HOWTO (R_MIPS_GPREL32, /* type */
294 0, /* rightshift */
295 4, /* size */
296 32, /* bitsize */
297 false, /* pc_relative */
298 0, /* bitpos */
299 complain_overflow_dont, /* complain_on_overflow */
300 mips_elf_gprel32_reloc, /* special_function */
301 "R_MIPS_GPREL32", /* name */
302 true, /* partial_inplace */
303 0xffffffff, /* src_mask */
304 0xffffffff, /* dst_mask */
305 false), /* pcrel_offset */
306
307 /* The remaining relocs are defined on Irix 5, although they are
308 not defined by the ABI. */
309 EMPTY_HOWTO (13),
310 EMPTY_HOWTO (14),
311 EMPTY_HOWTO (15),
312
313 /* A 5 bit shift field. */
314 HOWTO (R_MIPS_SHIFT5, /* type */
315 0, /* rightshift */
316 4, /* size */
317 5, /* bitsize */
318 false, /* pc_relative */
319 6, /* bitpos */
320 complain_overflow_bitfield, /* complain_on_overflow */
321 _bfd_mips_elf_generic_reloc, /* special_function */
322 "R_MIPS_SHIFT5", /* name */
323 true, /* partial_inplace */
324 0x000007c0, /* src_mask */
325 0x000007c0, /* dst_mask */
326 false), /* pcrel_offset */
327
328 /* A 6 bit shift field. */
329 /* FIXME: This is not handled correctly; a special function is
330 needed to put the most significant bit in the right place. */
331 HOWTO (R_MIPS_SHIFT6, /* type */
332 0, /* rightshift */
333 4, /* size */
334 6, /* bitsize */
335 false, /* pc_relative */
336 6, /* bitpos */
337 complain_overflow_bitfield, /* complain_on_overflow */
338 _bfd_mips_elf_generic_reloc, /* special_function */
339 "R_MIPS_SHIFT6", /* name */
340 true, /* partial_inplace */
341 0x000007c4, /* src_mask */
342 0x000007c4, /* dst_mask */
343 false), /* pcrel_offset */
344
345 /* A 64 bit relocation. */
346 HOWTO (R_MIPS_64, /* type */
347 0, /* rightshift */
348 8, /* size */
349 64, /* bitsize */
350 false, /* pc_relative */
351 0, /* bitpos */
352 complain_overflow_dont, /* complain_on_overflow */
353 mips32_64bit_reloc, /* special_function */
354 "R_MIPS_64", /* name */
355 true, /* partial_inplace */
356 MINUS_ONE, /* src_mask */
357 MINUS_ONE, /* dst_mask */
358 false), /* pcrel_offset */
359
360 /* Displacement in the global offset table. */
361 HOWTO (R_MIPS_GOT_DISP, /* type */
362 0, /* rightshift */
363 4, /* size */
364 16, /* bitsize */
365 false, /* pc_relative */
366 0, /* bitpos */
367 complain_overflow_signed, /* complain_on_overflow */
368 _bfd_mips_elf_generic_reloc, /* special_function */
369 "R_MIPS_GOT_DISP", /* name */
370 true, /* partial_inplace */
371 0x0000ffff, /* src_mask */
372 0x0000ffff, /* dst_mask */
373 false), /* pcrel_offset */
374
375 /* Displacement to page pointer in the global offset table. */
376 HOWTO (R_MIPS_GOT_PAGE, /* type */
377 0, /* rightshift */
378 4, /* size */
379 16, /* bitsize */
380 false, /* pc_relative */
381 0, /* bitpos */
382 complain_overflow_signed, /* complain_on_overflow */
383 _bfd_mips_elf_generic_reloc, /* special_function */
384 "R_MIPS_GOT_PAGE", /* name */
385 true, /* partial_inplace */
386 0x0000ffff, /* src_mask */
387 0x0000ffff, /* dst_mask */
388 false), /* pcrel_offset */
389
390 /* Offset from page pointer in the global offset table. */
391 HOWTO (R_MIPS_GOT_OFST, /* type */
392 0, /* rightshift */
393 4, /* size */
394 16, /* bitsize */
395 false, /* pc_relative */
396 0, /* bitpos */
397 complain_overflow_signed, /* complain_on_overflow */
398 _bfd_mips_elf_generic_reloc, /* special_function */
399 "R_MIPS_GOT_OFST", /* name */
400 true, /* partial_inplace */
401 0x0000ffff, /* src_mask */
402 0x0000ffff, /* dst_mask */
403 false), /* pcrel_offset */
404
405 /* High 16 bits of displacement in global offset table. */
406 HOWTO (R_MIPS_GOT_HI16, /* type */
407 0, /* rightshift */
408 4, /* size */
409 16, /* bitsize */
410 false, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_dont, /* complain_on_overflow */
413 _bfd_mips_elf_generic_reloc, /* special_function */
414 "R_MIPS_GOT_HI16", /* name */
415 true, /* partial_inplace */
416 0x0000ffff, /* src_mask */
417 0x0000ffff, /* dst_mask */
418 false), /* pcrel_offset */
419
420 /* Low 16 bits of displacement in global offset table. */
421 HOWTO (R_MIPS_GOT_LO16, /* type */
422 0, /* rightshift */
423 4, /* size */
424 16, /* bitsize */
425 false, /* pc_relative */
426 0, /* bitpos */
427 complain_overflow_dont, /* complain_on_overflow */
428 _bfd_mips_elf_generic_reloc, /* special_function */
429 "R_MIPS_GOT_LO16", /* name */
430 true, /* partial_inplace */
431 0x0000ffff, /* src_mask */
432 0x0000ffff, /* dst_mask */
433 false), /* pcrel_offset */
434
435 /* 64 bit subtraction. Used in the N32 ABI. */
436 HOWTO (R_MIPS_SUB, /* type */
437 0, /* rightshift */
438 8, /* size */
439 64, /* bitsize */
440 false, /* pc_relative */
441 0, /* bitpos */
442 complain_overflow_dont, /* complain_on_overflow */
443 _bfd_mips_elf_generic_reloc, /* special_function */
444 "R_MIPS_SUB", /* name */
445 true, /* partial_inplace */
446 MINUS_ONE, /* src_mask */
447 MINUS_ONE, /* dst_mask */
448 false), /* pcrel_offset */
449
450 /* Used to cause the linker to insert and delete instructions? */
451 EMPTY_HOWTO (R_MIPS_INSERT_A),
452 EMPTY_HOWTO (R_MIPS_INSERT_B),
453 EMPTY_HOWTO (R_MIPS_DELETE),
454
455 /* Get the higher value of a 64 bit addend. */
456 HOWTO (R_MIPS_HIGHER, /* type */
457 0, /* rightshift */
458 4, /* size */
459 16, /* bitsize */
460 false, /* pc_relative */
461 0, /* bitpos */
462 complain_overflow_dont, /* complain_on_overflow */
463 _bfd_mips_elf_generic_reloc, /* special_function */
464 "R_MIPS_HIGHER", /* name */
465 true, /* partial_inplace */
466 0x0000ffff, /* src_mask */
467 0x0000ffff, /* dst_mask */
468 false), /* pcrel_offset */
469
470 /* Get the highest value of a 64 bit addend. */
471 HOWTO (R_MIPS_HIGHEST, /* type */
472 0, /* rightshift */
473 4, /* size */
474 16, /* bitsize */
475 false, /* pc_relative */
476 0, /* bitpos */
477 complain_overflow_dont, /* complain_on_overflow */
478 _bfd_mips_elf_generic_reloc, /* special_function */
479 "R_MIPS_HIGHEST", /* name */
480 true, /* partial_inplace */
481 0x0000ffff, /* src_mask */
482 0x0000ffff, /* dst_mask */
483 false), /* pcrel_offset */
484
485 /* High 16 bits of displacement in global offset table. */
486 HOWTO (R_MIPS_CALL_HI16, /* type */
487 0, /* rightshift */
488 4, /* size */
489 16, /* bitsize */
490 false, /* pc_relative */
491 0, /* bitpos */
492 complain_overflow_dont, /* complain_on_overflow */
493 _bfd_mips_elf_generic_reloc, /* special_function */
494 "R_MIPS_CALL_HI16", /* name */
495 true, /* partial_inplace */
496 0x0000ffff, /* src_mask */
497 0x0000ffff, /* dst_mask */
498 false), /* pcrel_offset */
499
500 /* Low 16 bits of displacement in global offset table. */
501 HOWTO (R_MIPS_CALL_LO16, /* type */
502 0, /* rightshift */
503 4, /* size */
504 16, /* bitsize */
505 false, /* pc_relative */
506 0, /* bitpos */
507 complain_overflow_dont, /* complain_on_overflow */
508 _bfd_mips_elf_generic_reloc, /* special_function */
509 "R_MIPS_CALL_LO16", /* name */
510 true, /* partial_inplace */
511 0x0000ffff, /* src_mask */
512 0x0000ffff, /* dst_mask */
513 false), /* pcrel_offset */
514
515 /* Section displacement. */
516 HOWTO (R_MIPS_SCN_DISP, /* type */
517 0, /* rightshift */
518 4, /* size */
519 32, /* bitsize */
520 false, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_dont, /* complain_on_overflow */
523 _bfd_mips_elf_generic_reloc, /* special_function */
524 "R_MIPS_SCN_DISP", /* name */
525 true, /* partial_inplace */
526 0xffffffff, /* src_mask */
527 0xffffffff, /* dst_mask */
528 false), /* pcrel_offset */
529
530 EMPTY_HOWTO (R_MIPS_REL16),
531 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
532 EMPTY_HOWTO (R_MIPS_PJUMP),
533 EMPTY_HOWTO (R_MIPS_RELGOT),
534
535 /* Protected jump conversion. This is an optimization hint. No
536 relocation is required for correctness. */
537 HOWTO (R_MIPS_JALR, /* type */
538 0, /* rightshift */
539 4, /* size */
540 32, /* bitsize */
541 false, /* pc_relative */
542 0, /* bitpos */
543 complain_overflow_dont, /* complain_on_overflow */
544 _bfd_mips_elf_generic_reloc, /* special_function */
545 "R_MIPS_JALR", /* name */
546 false, /* partial_inplace */
547 0x00000000, /* src_mask */
548 0x00000000, /* dst_mask */
549 false), /* pcrel_offset */
550
551 /* TLS GD/LD dynamic relocations. */
552 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
553 0, /* rightshift */
554 4, /* size */
555 32, /* bitsize */
556 false, /* pc_relative */
557 0, /* bitpos */
558 complain_overflow_dont, /* complain_on_overflow */
559 _bfd_mips_elf_generic_reloc, /* special_function */
560 "R_MIPS_TLS_DTPMOD32", /* name */
561 true, /* partial_inplace */
562 0xffffffff, /* src_mask */
563 0xffffffff, /* dst_mask */
564 false), /* pcrel_offset */
565
566 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
567 0, /* rightshift */
568 4, /* size */
569 32, /* bitsize */
570 false, /* pc_relative */
571 0, /* bitpos */
572 complain_overflow_dont, /* complain_on_overflow */
573 _bfd_mips_elf_generic_reloc, /* special_function */
574 "R_MIPS_TLS_DTPREL32", /* name */
575 true, /* partial_inplace */
576 0xffffffff, /* src_mask */
577 0xffffffff, /* dst_mask */
578 false), /* pcrel_offset */
579
580 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
581 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
582
583 /* TLS general dynamic variable reference. */
584 HOWTO (R_MIPS_TLS_GD, /* type */
585 0, /* rightshift */
586 4, /* size */
587 16, /* bitsize */
588 false, /* pc_relative */
589 0, /* bitpos */
590 complain_overflow_signed, /* complain_on_overflow */
591 _bfd_mips_elf_generic_reloc, /* special_function */
592 "R_MIPS_TLS_GD", /* name */
593 true, /* partial_inplace */
594 0x0000ffff, /* src_mask */
595 0x0000ffff, /* dst_mask */
596 false), /* pcrel_offset */
597
598 /* TLS local dynamic variable reference. */
599 HOWTO (R_MIPS_TLS_LDM, /* type */
600 0, /* rightshift */
601 4, /* size */
602 16, /* bitsize */
603 false, /* pc_relative */
604 0, /* bitpos */
605 complain_overflow_signed, /* complain_on_overflow */
606 _bfd_mips_elf_generic_reloc, /* special_function */
607 "R_MIPS_TLS_LDM", /* name */
608 true, /* partial_inplace */
609 0x0000ffff, /* src_mask */
610 0x0000ffff, /* dst_mask */
611 false), /* pcrel_offset */
612
613 /* TLS local dynamic offset. */
614 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
615 0, /* rightshift */
616 4, /* size */
617 16, /* bitsize */
618 false, /* pc_relative */
619 0, /* bitpos */
620 complain_overflow_signed, /* complain_on_overflow */
621 _bfd_mips_elf_generic_reloc, /* special_function */
622 "R_MIPS_TLS_DTPREL_HI16", /* name */
623 true, /* partial_inplace */
624 0x0000ffff, /* src_mask */
625 0x0000ffff, /* dst_mask */
626 false), /* pcrel_offset */
627
628 /* TLS local dynamic offset. */
629 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
630 0, /* rightshift */
631 4, /* size */
632 16, /* bitsize */
633 false, /* pc_relative */
634 0, /* bitpos */
635 complain_overflow_signed, /* complain_on_overflow */
636 _bfd_mips_elf_generic_reloc, /* special_function */
637 "R_MIPS_TLS_DTPREL_LO16", /* name */
638 true, /* partial_inplace */
639 0x0000ffff, /* src_mask */
640 0x0000ffff, /* dst_mask */
641 false), /* pcrel_offset */
642
643 /* TLS thread pointer offset. */
644 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
645 0, /* rightshift */
646 4, /* size */
647 16, /* bitsize */
648 false, /* pc_relative */
649 0, /* bitpos */
650 complain_overflow_signed, /* complain_on_overflow */
651 _bfd_mips_elf_generic_reloc, /* special_function */
652 "R_MIPS_TLS_GOTTPREL", /* name */
653 true, /* partial_inplace */
654 0x0000ffff, /* src_mask */
655 0x0000ffff, /* dst_mask */
656 false), /* pcrel_offset */
657
658 /* TLS IE dynamic relocations. */
659 HOWTO (R_MIPS_TLS_TPREL32, /* type */
660 0, /* rightshift */
661 4, /* size */
662 32, /* bitsize */
663 false, /* pc_relative */
664 0, /* bitpos */
665 complain_overflow_dont, /* complain_on_overflow */
666 _bfd_mips_elf_generic_reloc, /* special_function */
667 "R_MIPS_TLS_TPREL32", /* name */
668 true, /* partial_inplace */
669 0xffffffff, /* src_mask */
670 0xffffffff, /* dst_mask */
671 false), /* pcrel_offset */
672
673 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
674
675 /* TLS thread pointer offset. */
676 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
677 0, /* rightshift */
678 4, /* size */
679 16, /* bitsize */
680 false, /* pc_relative */
681 0, /* bitpos */
682 complain_overflow_signed, /* complain_on_overflow */
683 _bfd_mips_elf_generic_reloc, /* special_function */
684 "R_MIPS_TLS_TPREL_HI16", /* name */
685 true, /* partial_inplace */
686 0x0000ffff, /* src_mask */
687 0x0000ffff, /* dst_mask */
688 false), /* pcrel_offset */
689
690 /* TLS thread pointer offset. */
691 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
692 0, /* rightshift */
693 4, /* size */
694 16, /* bitsize */
695 false, /* pc_relative */
696 0, /* bitpos */
697 complain_overflow_signed, /* complain_on_overflow */
698 _bfd_mips_elf_generic_reloc, /* special_function */
699 "R_MIPS_TLS_TPREL_LO16", /* name */
700 true, /* partial_inplace */
701 0x0000ffff, /* src_mask */
702 0x0000ffff, /* dst_mask */
703 false), /* pcrel_offset */
704
705 /* 32 bit relocation with no addend. */
706 HOWTO (R_MIPS_GLOB_DAT, /* type */
707 0, /* rightshift */
708 4, /* size */
709 32, /* bitsize */
710 false, /* pc_relative */
711 0, /* bitpos */
712 complain_overflow_dont, /* complain_on_overflow */
713 _bfd_mips_elf_generic_reloc, /* special_function */
714 "R_MIPS_GLOB_DAT", /* name */
715 false, /* partial_inplace */
716 0x0, /* src_mask */
717 0xffffffff, /* dst_mask */
718 false), /* pcrel_offset */
719
720 EMPTY_HOWTO (52),
721 EMPTY_HOWTO (53),
722 EMPTY_HOWTO (54),
723 EMPTY_HOWTO (55),
724 EMPTY_HOWTO (56),
725 EMPTY_HOWTO (57),
726 EMPTY_HOWTO (58),
727 EMPTY_HOWTO (59),
728
729 HOWTO (R_MIPS_PC21_S2, /* type */
730 2, /* rightshift */
731 4, /* size */
732 21, /* bitsize */
733 true, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_signed, /* complain_on_overflow */
736 _bfd_mips_elf_generic_reloc, /* special_function */
737 "R_MIPS_PC21_S2", /* name */
738 true, /* partial_inplace */
739 0x001fffff, /* src_mask */
740 0x001fffff, /* dst_mask */
741 true), /* pcrel_offset */
742
743 HOWTO (R_MIPS_PC26_S2, /* type */
744 2, /* rightshift */
745 4, /* size */
746 26, /* bitsize */
747 true, /* pc_relative */
748 0, /* bitpos */
749 complain_overflow_signed, /* complain_on_overflow */
750 _bfd_mips_elf_generic_reloc, /* special_function */
751 "R_MIPS_PC26_S2", /* name */
752 true, /* partial_inplace */
753 0x03ffffff, /* src_mask */
754 0x03ffffff, /* dst_mask */
755 true), /* pcrel_offset */
756
757 HOWTO (R_MIPS_PC18_S3, /* type */
758 3, /* rightshift */
759 4, /* size */
760 18, /* bitsize */
761 true, /* pc_relative */
762 0, /* bitpos */
763 complain_overflow_signed, /* complain_on_overflow */
764 _bfd_mips_elf_generic_reloc, /* special_function */
765 "R_MIPS_PC18_S3", /* name */
766 true, /* partial_inplace */
767 0x0003ffff, /* src_mask */
768 0x0003ffff, /* dst_mask */
769 true), /* pcrel_offset */
770
771 HOWTO (R_MIPS_PC19_S2, /* type */
772 2, /* rightshift */
773 4, /* size */
774 19, /* bitsize */
775 true, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_signed, /* complain_on_overflow */
778 _bfd_mips_elf_generic_reloc, /* special_function */
779 "R_MIPS_PC19_S2", /* name */
780 true, /* partial_inplace */
781 0x0007ffff, /* src_mask */
782 0x0007ffff, /* dst_mask */
783 true), /* pcrel_offset */
784
785 HOWTO (R_MIPS_PCHI16, /* type */
786 16, /* rightshift */
787 4, /* size */
788 16, /* bitsize */
789 true, /* pc_relative */
790 0, /* bitpos */
791 complain_overflow_signed, /* complain_on_overflow */
792 _bfd_mips_elf_generic_reloc, /* special_function */
793 "R_MIPS_PCHI16", /* name */
794 true, /* partial_inplace */
795 0x0000ffff, /* src_mask */
796 0x0000ffff, /* dst_mask */
797 true), /* pcrel_offset */
798
799 HOWTO (R_MIPS_PCLO16, /* type */
800 0, /* rightshift */
801 4, /* size */
802 16, /* bitsize */
803 true, /* pc_relative */
804 0, /* bitpos */
805 complain_overflow_dont, /* complain_on_overflow */
806 _bfd_mips_elf_generic_reloc, /* special_function */
807 "R_MIPS_PCLO16", /* name */
808 true, /* partial_inplace */
809 0x0000ffff, /* src_mask */
810 0x0000ffff, /* dst_mask */
811 true), /* pcrel_offset */
812 };
813
814 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
815 is a hack to make the linker think that we need 64 bit values. */
816 static reloc_howto_type elf_mips_ctor64_howto =
817 HOWTO (R_MIPS_64, /* type */
818 0, /* rightshift */
819 8, /* size */
820 32, /* bitsize */
821 false, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_signed, /* complain_on_overflow */
824 mips32_64bit_reloc, /* special_function */
825 "R_MIPS_64", /* name */
826 true, /* partial_inplace */
827 0xffffffff, /* src_mask */
828 0xffffffff, /* dst_mask */
829 false); /* pcrel_offset */
830
831 static reloc_howto_type elf_mips16_howto_table_rel[] =
832 {
833 /* The reloc used for the mips16 jump instruction. */
834 HOWTO (R_MIPS16_26, /* type */
835 2, /* rightshift */
836 4, /* size */
837 26, /* bitsize */
838 false, /* pc_relative */
839 0, /* bitpos */
840 complain_overflow_dont, /* complain_on_overflow */
841 /* This needs complex overflow
842 detection, because the upper four
843 bits must match the PC. */
844 _bfd_mips_elf_generic_reloc, /* special_function */
845 "R_MIPS16_26", /* name */
846 true, /* partial_inplace */
847 0x3ffffff, /* src_mask */
848 0x3ffffff, /* dst_mask */
849 false), /* pcrel_offset */
850
851 /* The reloc used for the mips16 gprel instruction. */
852 HOWTO (R_MIPS16_GPREL, /* type */
853 0, /* rightshift */
854 4, /* size */
855 16, /* bitsize */
856 false, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_signed, /* complain_on_overflow */
859 mips16_gprel_reloc, /* special_function */
860 "R_MIPS16_GPREL", /* name */
861 true, /* partial_inplace */
862 0x0000ffff, /* src_mask */
863 0x0000ffff, /* dst_mask */
864 false), /* pcrel_offset */
865
866 /* A MIPS16 reference to the global offset table. */
867 HOWTO (R_MIPS16_GOT16, /* type */
868 0, /* rightshift */
869 4, /* size */
870 16, /* bitsize */
871 false, /* pc_relative */
872 0, /* bitpos */
873 complain_overflow_dont, /* complain_on_overflow */
874 _bfd_mips_elf_got16_reloc, /* special_function */
875 "R_MIPS16_GOT16", /* name */
876 true, /* partial_inplace */
877 0x0000ffff, /* src_mask */
878 0x0000ffff, /* dst_mask */
879 false), /* pcrel_offset */
880
881 /* A MIPS16 call through the global offset table. */
882 HOWTO (R_MIPS16_CALL16, /* type */
883 0, /* rightshift */
884 4, /* size */
885 16, /* bitsize */
886 false, /* pc_relative */
887 0, /* bitpos */
888 complain_overflow_dont, /* complain_on_overflow */
889 _bfd_mips_elf_generic_reloc, /* special_function */
890 "R_MIPS16_CALL16", /* name */
891 true, /* partial_inplace */
892 0x0000ffff, /* src_mask */
893 0x0000ffff, /* dst_mask */
894 false), /* pcrel_offset */
895
896 /* MIPS16 high 16 bits of symbol value. */
897 HOWTO (R_MIPS16_HI16, /* type */
898 16, /* rightshift */
899 4, /* size */
900 16, /* bitsize */
901 false, /* pc_relative */
902 0, /* bitpos */
903 complain_overflow_dont, /* complain_on_overflow */
904 _bfd_mips_elf_hi16_reloc, /* special_function */
905 "R_MIPS16_HI16", /* name */
906 true, /* partial_inplace */
907 0x0000ffff, /* src_mask */
908 0x0000ffff, /* dst_mask */
909 false), /* pcrel_offset */
910
911 /* MIPS16 low 16 bits of symbol value. */
912 HOWTO (R_MIPS16_LO16, /* type */
913 0, /* rightshift */
914 4, /* size */
915 16, /* bitsize */
916 false, /* pc_relative */
917 0, /* bitpos */
918 complain_overflow_dont, /* complain_on_overflow */
919 _bfd_mips_elf_lo16_reloc, /* special_function */
920 "R_MIPS16_LO16", /* name */
921 true, /* partial_inplace */
922 0x0000ffff, /* src_mask */
923 0x0000ffff, /* dst_mask */
924 false), /* pcrel_offset */
925
926 /* MIPS16 TLS general dynamic variable reference. */
927 HOWTO (R_MIPS16_TLS_GD, /* type */
928 0, /* rightshift */
929 4, /* size */
930 16, /* bitsize */
931 false, /* pc_relative */
932 0, /* bitpos */
933 complain_overflow_signed, /* complain_on_overflow */
934 _bfd_mips_elf_generic_reloc, /* special_function */
935 "R_MIPS16_TLS_GD", /* name */
936 true, /* partial_inplace */
937 0x0000ffff, /* src_mask */
938 0x0000ffff, /* dst_mask */
939 false), /* pcrel_offset */
940
941 /* MIPS16 TLS local dynamic variable reference. */
942 HOWTO (R_MIPS16_TLS_LDM, /* type */
943 0, /* rightshift */
944 4, /* size */
945 16, /* bitsize */
946 false, /* pc_relative */
947 0, /* bitpos */
948 complain_overflow_signed, /* complain_on_overflow */
949 _bfd_mips_elf_generic_reloc, /* special_function */
950 "R_MIPS16_TLS_LDM", /* name */
951 true, /* partial_inplace */
952 0x0000ffff, /* src_mask */
953 0x0000ffff, /* dst_mask */
954 false), /* pcrel_offset */
955
956 /* MIPS16 TLS local dynamic offset. */
957 HOWTO (R_MIPS16_TLS_DTPREL_HI16, /* type */
958 0, /* rightshift */
959 4, /* size */
960 16, /* bitsize */
961 false, /* pc_relative */
962 0, /* bitpos */
963 complain_overflow_signed, /* complain_on_overflow */
964 _bfd_mips_elf_generic_reloc, /* special_function */
965 "R_MIPS16_TLS_DTPREL_HI16", /* name */
966 true, /* partial_inplace */
967 0x0000ffff, /* src_mask */
968 0x0000ffff, /* dst_mask */
969 false), /* pcrel_offset */
970
971 /* MIPS16 TLS local dynamic offset. */
972 HOWTO (R_MIPS16_TLS_DTPREL_LO16, /* type */
973 0, /* rightshift */
974 4, /* size */
975 16, /* bitsize */
976 false, /* pc_relative */
977 0, /* bitpos */
978 complain_overflow_signed, /* complain_on_overflow */
979 _bfd_mips_elf_generic_reloc, /* special_function */
980 "R_MIPS16_TLS_DTPREL_LO16", /* name */
981 true, /* partial_inplace */
982 0x0000ffff, /* src_mask */
983 0x0000ffff, /* dst_mask */
984 false), /* pcrel_offset */
985
986 /* MIPS16 TLS thread pointer offset. */
987 HOWTO (R_MIPS16_TLS_GOTTPREL, /* type */
988 0, /* rightshift */
989 4, /* size */
990 16, /* bitsize */
991 false, /* pc_relative */
992 0, /* bitpos */
993 complain_overflow_signed, /* complain_on_overflow */
994 _bfd_mips_elf_generic_reloc, /* special_function */
995 "R_MIPS16_TLS_GOTTPREL", /* name */
996 true, /* partial_inplace */
997 0x0000ffff, /* src_mask */
998 0x0000ffff, /* dst_mask */
999 false), /* pcrel_offset */
1000
1001 /* MIPS16 TLS thread pointer offset. */
1002 HOWTO (R_MIPS16_TLS_TPREL_HI16, /* type */
1003 0, /* rightshift */
1004 4, /* size */
1005 16, /* bitsize */
1006 false, /* pc_relative */
1007 0, /* bitpos */
1008 complain_overflow_signed, /* complain_on_overflow */
1009 _bfd_mips_elf_generic_reloc, /* special_function */
1010 "R_MIPS16_TLS_TPREL_HI16", /* name */
1011 true, /* partial_inplace */
1012 0x0000ffff, /* src_mask */
1013 0x0000ffff, /* dst_mask */
1014 false), /* pcrel_offset */
1015
1016 /* MIPS16 TLS thread pointer offset. */
1017 HOWTO (R_MIPS16_TLS_TPREL_LO16, /* type */
1018 0, /* rightshift */
1019 4, /* size */
1020 16, /* bitsize */
1021 false, /* pc_relative */
1022 0, /* bitpos */
1023 complain_overflow_signed, /* complain_on_overflow */
1024 _bfd_mips_elf_generic_reloc, /* special_function */
1025 "R_MIPS16_TLS_TPREL_LO16", /* name */
1026 true, /* partial_inplace */
1027 0x0000ffff, /* src_mask */
1028 0x0000ffff, /* dst_mask */
1029 false), /* pcrel_offset */
1030
1031 /* MIPS16 16-bit PC-relative branch offset. */
1032 HOWTO (R_MIPS16_PC16_S1, /* type */
1033 1, /* rightshift */
1034 4, /* size */
1035 16, /* bitsize */
1036 true, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_signed, /* complain_on_overflow */
1039 _bfd_mips_elf_generic_reloc, /* special_function */
1040 "R_MIPS16_PC16_S1", /* name */
1041 true, /* partial_inplace */
1042 0x0000ffff, /* src_mask */
1043 0x0000ffff, /* dst_mask */
1044 true), /* pcrel_offset */
1045 };
1046
1047 static reloc_howto_type elf_micromips_howto_table_rel[] =
1048 {
1049 EMPTY_HOWTO (130),
1050 EMPTY_HOWTO (131),
1051 EMPTY_HOWTO (132),
1052
1053 /* 26 bit jump address. */
1054 HOWTO (R_MICROMIPS_26_S1, /* type */
1055 1, /* rightshift */
1056 4, /* size */
1057 26, /* bitsize */
1058 false, /* pc_relative */
1059 0, /* bitpos */
1060 complain_overflow_dont, /* complain_on_overflow */
1061 /* This needs complex overflow
1062 detection, because the upper four
1063 bits must match the PC. */
1064 _bfd_mips_elf_generic_reloc, /* special_function */
1065 "R_MICROMIPS_26_S1", /* name */
1066 true, /* partial_inplace */
1067 0x3ffffff, /* src_mask */
1068 0x3ffffff, /* dst_mask */
1069 false), /* pcrel_offset */
1070
1071 /* High 16 bits of symbol value. */
1072 HOWTO (R_MICROMIPS_HI16, /* type */
1073 16, /* rightshift */
1074 4, /* size */
1075 16, /* bitsize */
1076 false, /* pc_relative */
1077 0, /* bitpos */
1078 complain_overflow_dont, /* complain_on_overflow */
1079 _bfd_mips_elf_hi16_reloc, /* special_function */
1080 "R_MICROMIPS_HI16", /* name */
1081 true, /* partial_inplace */
1082 0x0000ffff, /* src_mask */
1083 0x0000ffff, /* dst_mask */
1084 false), /* pcrel_offset */
1085
1086 /* Low 16 bits of symbol value. */
1087 HOWTO (R_MICROMIPS_LO16, /* type */
1088 0, /* rightshift */
1089 4, /* size */
1090 16, /* bitsize */
1091 false, /* pc_relative */
1092 0, /* bitpos */
1093 complain_overflow_dont, /* complain_on_overflow */
1094 _bfd_mips_elf_lo16_reloc, /* special_function */
1095 "R_MICROMIPS_LO16", /* name */
1096 true, /* partial_inplace */
1097 0x0000ffff, /* src_mask */
1098 0x0000ffff, /* dst_mask */
1099 false), /* pcrel_offset */
1100
1101 /* GP relative reference. */
1102 HOWTO (R_MICROMIPS_GPREL16, /* type */
1103 0, /* rightshift */
1104 4, /* size */
1105 16, /* bitsize */
1106 false, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_signed, /* complain_on_overflow */
1109 _bfd_mips_elf32_gprel16_reloc, /* special_function */
1110 "R_MICROMIPS_GPREL16", /* name */
1111 true, /* partial_inplace */
1112 0x0000ffff, /* src_mask */
1113 0x0000ffff, /* dst_mask */
1114 false), /* pcrel_offset */
1115
1116 /* Reference to literal section. */
1117 HOWTO (R_MICROMIPS_LITERAL, /* type */
1118 0, /* rightshift */
1119 4, /* size */
1120 16, /* bitsize */
1121 false, /* pc_relative */
1122 0, /* bitpos */
1123 complain_overflow_signed, /* complain_on_overflow */
1124 _bfd_mips_elf32_gprel16_reloc, /* special_function */
1125 "R_MICROMIPS_LITERAL", /* name */
1126 true, /* partial_inplace */
1127 0x0000ffff, /* src_mask */
1128 0x0000ffff, /* dst_mask */
1129 false), /* pcrel_offset */
1130
1131 /* Reference to global offset table. */
1132 HOWTO (R_MICROMIPS_GOT16, /* type */
1133 0, /* rightshift */
1134 4, /* size */
1135 16, /* bitsize */
1136 false, /* pc_relative */
1137 0, /* bitpos */
1138 complain_overflow_signed, /* complain_on_overflow */
1139 _bfd_mips_elf_got16_reloc, /* special_function */
1140 "R_MICROMIPS_GOT16", /* name */
1141 true, /* partial_inplace */
1142 0x0000ffff, /* src_mask */
1143 0x0000ffff, /* dst_mask */
1144 false), /* pcrel_offset */
1145
1146 /* This is for microMIPS branches. */
1147 HOWTO (R_MICROMIPS_PC7_S1, /* type */
1148 1, /* rightshift */
1149 2, /* size */
1150 7, /* bitsize */
1151 true, /* pc_relative */
1152 0, /* bitpos */
1153 complain_overflow_signed, /* complain_on_overflow */
1154 _bfd_mips_elf_generic_reloc, /* special_function */
1155 "R_MICROMIPS_PC7_S1", /* name */
1156 true, /* partial_inplace */
1157 0x0000007f, /* src_mask */
1158 0x0000007f, /* dst_mask */
1159 true), /* pcrel_offset */
1160
1161 HOWTO (R_MICROMIPS_PC10_S1, /* type */
1162 1, /* rightshift */
1163 2, /* size */
1164 10, /* bitsize */
1165 true, /* pc_relative */
1166 0, /* bitpos */
1167 complain_overflow_signed, /* complain_on_overflow */
1168 _bfd_mips_elf_generic_reloc, /* special_function */
1169 "R_MICROMIPS_PC10_S1", /* name */
1170 true, /* partial_inplace */
1171 0x000003ff, /* src_mask */
1172 0x000003ff, /* dst_mask */
1173 true), /* pcrel_offset */
1174
1175 HOWTO (R_MICROMIPS_PC16_S1, /* type */
1176 1, /* rightshift */
1177 4, /* size */
1178 16, /* bitsize */
1179 true, /* pc_relative */
1180 0, /* bitpos */
1181 complain_overflow_signed, /* complain_on_overflow */
1182 _bfd_mips_elf_generic_reloc, /* special_function */
1183 "R_MICROMIPS_PC16_S1", /* name */
1184 true, /* partial_inplace */
1185 0x0000ffff, /* src_mask */
1186 0x0000ffff, /* dst_mask */
1187 true), /* pcrel_offset */
1188
1189 /* 16 bit call through global offset table. */
1190 HOWTO (R_MICROMIPS_CALL16, /* type */
1191 0, /* rightshift */
1192 4, /* size */
1193 16, /* bitsize */
1194 false, /* pc_relative */
1195 0, /* bitpos */
1196 complain_overflow_signed, /* complain_on_overflow */
1197 _bfd_mips_elf_generic_reloc, /* special_function */
1198 "R_MICROMIPS_CALL16", /* name */
1199 true, /* partial_inplace */
1200 0x0000ffff, /* src_mask */
1201 0x0000ffff, /* dst_mask */
1202 false), /* pcrel_offset */
1203
1204 EMPTY_HOWTO (143),
1205 EMPTY_HOWTO (144),
1206
1207 /* Displacement in the global offset table. */
1208 HOWTO (R_MICROMIPS_GOT_DISP, /* type */
1209 0, /* rightshift */
1210 4, /* size */
1211 16, /* bitsize */
1212 false, /* pc_relative */
1213 0, /* bitpos */
1214 complain_overflow_signed, /* complain_on_overflow */
1215 _bfd_mips_elf_generic_reloc, /* special_function */
1216 "R_MICROMIPS_GOT_DISP",/* name */
1217 true, /* partial_inplace */
1218 0x0000ffff, /* src_mask */
1219 0x0000ffff, /* dst_mask */
1220 false), /* pcrel_offset */
1221
1222 /* Displacement to page pointer in the global offset table. */
1223 HOWTO (R_MICROMIPS_GOT_PAGE, /* type */
1224 0, /* rightshift */
1225 4, /* size */
1226 16, /* bitsize */
1227 false, /* pc_relative */
1228 0, /* bitpos */
1229 complain_overflow_signed, /* complain_on_overflow */
1230 _bfd_mips_elf_generic_reloc, /* special_function */
1231 "R_MICROMIPS_GOT_PAGE",/* name */
1232 true, /* partial_inplace */
1233 0x0000ffff, /* src_mask */
1234 0x0000ffff, /* dst_mask */
1235 false), /* pcrel_offset */
1236
1237 /* Offset from page pointer in the global offset table. */
1238 HOWTO (R_MICROMIPS_GOT_OFST, /* type */
1239 0, /* rightshift */
1240 4, /* size */
1241 16, /* bitsize */
1242 false, /* pc_relative */
1243 0, /* bitpos */
1244 complain_overflow_signed, /* complain_on_overflow */
1245 _bfd_mips_elf_generic_reloc, /* special_function */
1246 "R_MICROMIPS_GOT_OFST",/* name */
1247 true, /* partial_inplace */
1248 0x0000ffff, /* src_mask */
1249 0x0000ffff, /* dst_mask */
1250 false), /* pcrel_offset */
1251
1252 /* High 16 bits of displacement in global offset table. */
1253 HOWTO (R_MICROMIPS_GOT_HI16, /* type */
1254 0, /* rightshift */
1255 4, /* size */
1256 16, /* bitsize */
1257 false, /* pc_relative */
1258 0, /* bitpos */
1259 complain_overflow_dont, /* complain_on_overflow */
1260 _bfd_mips_elf_generic_reloc, /* special_function */
1261 "R_MICROMIPS_GOT_HI16",/* name */
1262 true, /* partial_inplace */
1263 0x0000ffff, /* src_mask */
1264 0x0000ffff, /* dst_mask */
1265 false), /* pcrel_offset */
1266
1267 /* Low 16 bits of displacement in global offset table. */
1268 HOWTO (R_MICROMIPS_GOT_LO16, /* type */
1269 0, /* rightshift */
1270 4, /* size */
1271 16, /* bitsize */
1272 false, /* pc_relative */
1273 0, /* bitpos */
1274 complain_overflow_dont, /* complain_on_overflow */
1275 _bfd_mips_elf_generic_reloc, /* special_function */
1276 "R_MICROMIPS_GOT_LO16",/* name */
1277 true, /* partial_inplace */
1278 0x0000ffff, /* src_mask */
1279 0x0000ffff, /* dst_mask */
1280 false), /* pcrel_offset */
1281
1282 /* 64 bit subtraction. Used in the N32 ABI. */
1283 HOWTO (R_MICROMIPS_SUB, /* type */
1284 0, /* rightshift */
1285 8, /* size */
1286 64, /* bitsize */
1287 false, /* pc_relative */
1288 0, /* bitpos */
1289 complain_overflow_dont, /* complain_on_overflow */
1290 _bfd_mips_elf_generic_reloc, /* special_function */
1291 "R_MICROMIPS_SUB", /* name */
1292 true, /* partial_inplace */
1293 MINUS_ONE, /* src_mask */
1294 MINUS_ONE, /* dst_mask */
1295 false), /* pcrel_offset */
1296
1297 /* Get the higher value of a 64 bit addend. */
1298 HOWTO (R_MICROMIPS_HIGHER, /* type */
1299 0, /* rightshift */
1300 4, /* size */
1301 16, /* bitsize */
1302 false, /* pc_relative */
1303 0, /* bitpos */
1304 complain_overflow_dont, /* complain_on_overflow */
1305 _bfd_mips_elf_generic_reloc, /* special_function */
1306 "R_MICROMIPS_HIGHER", /* name */
1307 true, /* partial_inplace */
1308 0x0000ffff, /* src_mask */
1309 0x0000ffff, /* dst_mask */
1310 false), /* pcrel_offset */
1311
1312 /* Get the highest value of a 64 bit addend. */
1313 HOWTO (R_MICROMIPS_HIGHEST, /* type */
1314 0, /* rightshift */
1315 4, /* size */
1316 16, /* bitsize */
1317 false, /* pc_relative */
1318 0, /* bitpos */
1319 complain_overflow_dont, /* complain_on_overflow */
1320 _bfd_mips_elf_generic_reloc, /* special_function */
1321 "R_MICROMIPS_HIGHEST", /* name */
1322 true, /* partial_inplace */
1323 0x0000ffff, /* src_mask */
1324 0x0000ffff, /* dst_mask */
1325 false), /* pcrel_offset */
1326
1327 /* High 16 bits of displacement in global offset table. */
1328 HOWTO (R_MICROMIPS_CALL_HI16, /* type */
1329 0, /* rightshift */
1330 4, /* size */
1331 16, /* bitsize */
1332 false, /* pc_relative */
1333 0, /* bitpos */
1334 complain_overflow_dont, /* complain_on_overflow */
1335 _bfd_mips_elf_generic_reloc, /* special_function */
1336 "R_MICROMIPS_CALL_HI16",/* name */
1337 true, /* partial_inplace */
1338 0x0000ffff, /* src_mask */
1339 0x0000ffff, /* dst_mask */
1340 false), /* pcrel_offset */
1341
1342 /* Low 16 bits of displacement in global offset table. */
1343 HOWTO (R_MICROMIPS_CALL_LO16, /* type */
1344 0, /* rightshift */
1345 4, /* size */
1346 16, /* bitsize */
1347 false, /* pc_relative */
1348 0, /* bitpos */
1349 complain_overflow_dont, /* complain_on_overflow */
1350 _bfd_mips_elf_generic_reloc, /* special_function */
1351 "R_MICROMIPS_CALL_LO16",/* name */
1352 true, /* partial_inplace */
1353 0x0000ffff, /* src_mask */
1354 0x0000ffff, /* dst_mask */
1355 false), /* pcrel_offset */
1356
1357 /* Section displacement. */
1358 HOWTO (R_MICROMIPS_SCN_DISP, /* type */
1359 0, /* rightshift */
1360 4, /* size */
1361 32, /* bitsize */
1362 false, /* pc_relative */
1363 0, /* bitpos */
1364 complain_overflow_dont, /* complain_on_overflow */
1365 _bfd_mips_elf_generic_reloc, /* special_function */
1366 "R_MICROMIPS_SCN_DISP",/* name */
1367 true, /* partial_inplace */
1368 0xffffffff, /* src_mask */
1369 0xffffffff, /* dst_mask */
1370 false), /* pcrel_offset */
1371
1372 /* Protected jump conversion. This is an optimization hint. No
1373 relocation is required for correctness. */
1374 HOWTO (R_MICROMIPS_JALR, /* type */
1375 0, /* rightshift */
1376 4, /* size */
1377 32, /* bitsize */
1378 false, /* pc_relative */
1379 0, /* bitpos */
1380 complain_overflow_dont, /* complain_on_overflow */
1381 _bfd_mips_elf_generic_reloc, /* special_function */
1382 "R_MICROMIPS_JALR", /* name */
1383 false, /* partial_inplace */
1384 0x00000000, /* src_mask */
1385 0x00000000, /* dst_mask */
1386 false), /* pcrel_offset */
1387
1388 /* Low 16 bits of symbol value. Note that the high 16 bits of symbol values
1389 must be zero. This is used for relaxation. */
1390 HOWTO (R_MICROMIPS_HI0_LO16, /* type */
1391 0, /* rightshift */
1392 4, /* size */
1393 16, /* bitsize */
1394 false, /* pc_relative */
1395 0, /* bitpos */
1396 complain_overflow_dont, /* complain_on_overflow */
1397 _bfd_mips_elf_generic_reloc, /* special_function */
1398 "R_MICROMIPS_HI0_LO16",/* name */
1399 true, /* partial_inplace */
1400 0x0000ffff, /* src_mask */
1401 0x0000ffff, /* dst_mask */
1402 false), /* pcrel_offset */
1403
1404 EMPTY_HOWTO (158),
1405 EMPTY_HOWTO (159),
1406 EMPTY_HOWTO (160),
1407 EMPTY_HOWTO (161),
1408
1409 /* TLS general dynamic variable reference. */
1410 HOWTO (R_MICROMIPS_TLS_GD, /* type */
1411 0, /* rightshift */
1412 4, /* size */
1413 16, /* bitsize */
1414 false, /* pc_relative */
1415 0, /* bitpos */
1416 complain_overflow_signed, /* complain_on_overflow */
1417 _bfd_mips_elf_generic_reloc, /* special_function */
1418 "R_MICROMIPS_TLS_GD", /* name */
1419 true, /* partial_inplace */
1420 0x0000ffff, /* src_mask */
1421 0x0000ffff, /* dst_mask */
1422 false), /* pcrel_offset */
1423
1424 /* TLS local dynamic variable reference. */
1425 HOWTO (R_MICROMIPS_TLS_LDM, /* type */
1426 0, /* rightshift */
1427 4, /* size */
1428 16, /* bitsize */
1429 false, /* pc_relative */
1430 0, /* bitpos */
1431 complain_overflow_signed, /* complain_on_overflow */
1432 _bfd_mips_elf_generic_reloc, /* special_function */
1433 "R_MICROMIPS_TLS_LDM", /* name */
1434 true, /* partial_inplace */
1435 0x0000ffff, /* src_mask */
1436 0x0000ffff, /* dst_mask */
1437 false), /* pcrel_offset */
1438
1439 /* TLS local dynamic offset. */
1440 HOWTO (R_MICROMIPS_TLS_DTPREL_HI16, /* type */
1441 0, /* rightshift */
1442 4, /* size */
1443 16, /* bitsize */
1444 false, /* pc_relative */
1445 0, /* bitpos */
1446 complain_overflow_signed, /* complain_on_overflow */
1447 _bfd_mips_elf_generic_reloc, /* special_function */
1448 "R_MICROMIPS_TLS_DTPREL_HI16", /* name */
1449 true, /* partial_inplace */
1450 0x0000ffff, /* src_mask */
1451 0x0000ffff, /* dst_mask */
1452 false), /* pcrel_offset */
1453
1454 /* TLS local dynamic offset. */
1455 HOWTO (R_MICROMIPS_TLS_DTPREL_LO16, /* type */
1456 0, /* rightshift */
1457 4, /* size */
1458 16, /* bitsize */
1459 false, /* pc_relative */
1460 0, /* bitpos */
1461 complain_overflow_signed, /* complain_on_overflow */
1462 _bfd_mips_elf_generic_reloc, /* special_function */
1463 "R_MICROMIPS_TLS_DTPREL_LO16", /* name */
1464 true, /* partial_inplace */
1465 0x0000ffff, /* src_mask */
1466 0x0000ffff, /* dst_mask */
1467 false), /* pcrel_offset */
1468
1469 /* TLS thread pointer offset. */
1470 HOWTO (R_MICROMIPS_TLS_GOTTPREL, /* type */
1471 0, /* rightshift */
1472 4, /* size */
1473 16, /* bitsize */
1474 false, /* pc_relative */
1475 0, /* bitpos */
1476 complain_overflow_signed, /* complain_on_overflow */
1477 _bfd_mips_elf_generic_reloc, /* special_function */
1478 "R_MICROMIPS_TLS_GOTTPREL", /* name */
1479 true, /* partial_inplace */
1480 0x0000ffff, /* src_mask */
1481 0x0000ffff, /* dst_mask */
1482 false), /* pcrel_offset */
1483
1484 EMPTY_HOWTO (167),
1485 EMPTY_HOWTO (168),
1486
1487 /* TLS thread pointer offset. */
1488 HOWTO (R_MICROMIPS_TLS_TPREL_HI16, /* type */
1489 0, /* rightshift */
1490 4, /* size */
1491 16, /* bitsize */
1492 false, /* pc_relative */
1493 0, /* bitpos */
1494 complain_overflow_signed, /* complain_on_overflow */
1495 _bfd_mips_elf_generic_reloc, /* special_function */
1496 "R_MICROMIPS_TLS_TPREL_HI16", /* name */
1497 true, /* partial_inplace */
1498 0x0000ffff, /* src_mask */
1499 0x0000ffff, /* dst_mask */
1500 false), /* pcrel_offset */
1501
1502 /* TLS thread pointer offset. */
1503 HOWTO (R_MICROMIPS_TLS_TPREL_LO16, /* type */
1504 0, /* rightshift */
1505 4, /* size */
1506 16, /* bitsize */
1507 false, /* pc_relative */
1508 0, /* bitpos */
1509 complain_overflow_signed, /* complain_on_overflow */
1510 _bfd_mips_elf_generic_reloc, /* special_function */
1511 "R_MICROMIPS_TLS_TPREL_LO16", /* name */
1512 true, /* partial_inplace */
1513 0x0000ffff, /* src_mask */
1514 0x0000ffff, /* dst_mask */
1515 false), /* pcrel_offset */
1516
1517 EMPTY_HOWTO (171),
1518
1519 /* GP- and PC-relative relocations. */
1520 HOWTO (R_MICROMIPS_GPREL7_S2, /* type */
1521 2, /* rightshift */
1522 2, /* size */
1523 7, /* bitsize */
1524 false, /* pc_relative */
1525 0, /* bitpos */
1526 complain_overflow_signed, /* complain_on_overflow */
1527 _bfd_mips_elf32_gprel16_reloc, /* special_function */
1528 "R_MICROMIPS_GPREL7_S2", /* name */
1529 true, /* partial_inplace */
1530 0x0000007f, /* src_mask */
1531 0x0000007f, /* dst_mask */
1532 false), /* pcrel_offset */
1533
1534 HOWTO (R_MICROMIPS_PC23_S2, /* type */
1535 2, /* rightshift */
1536 4, /* size */
1537 23, /* bitsize */
1538 true, /* pc_relative */
1539 0, /* bitpos */
1540 complain_overflow_signed, /* complain_on_overflow */
1541 _bfd_mips_elf_generic_reloc, /* special_function */
1542 "R_MICROMIPS_PC23_S2", /* name */
1543 true, /* partial_inplace */
1544 0x007fffff, /* src_mask */
1545 0x007fffff, /* dst_mask */
1546 true), /* pcrel_offset */
1547 };
1548
1549 /* 16 bit offset for pc-relative branches. */
1550 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1551 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1552 2, /* rightshift */
1553 4, /* size */
1554 16, /* bitsize */
1555 true, /* pc_relative */
1556 0, /* bitpos */
1557 complain_overflow_signed, /* complain_on_overflow */
1558 _bfd_mips_elf_generic_reloc, /* special_function */
1559 "R_MIPS_GNU_REL16_S2", /* name */
1560 true, /* partial_inplace */
1561 0xffff, /* src_mask */
1562 0xffff, /* dst_mask */
1563 true); /* pcrel_offset */
1564
1565 /* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
1566 It was co-opted by mips-linux for exception-handling data. GCC stopped
1567 using it in May, 2004, then started using it again for compact unwind
1568 tables. */
1569 static reloc_howto_type elf_mips_gnu_pcrel32 =
1570 HOWTO (R_MIPS_PC32, /* type */
1571 0, /* rightshift */
1572 4, /* size */
1573 32, /* bitsize */
1574 true, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_signed, /* complain_on_overflow */
1577 _bfd_mips_elf_generic_reloc, /* special_function */
1578 "R_MIPS_PC32", /* name */
1579 true, /* partial_inplace */
1580 0xffffffff, /* src_mask */
1581 0xffffffff, /* dst_mask */
1582 true); /* pcrel_offset */
1583
1584 /* GNU extension to record C++ vtable hierarchy */
1585 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1586 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1587 0, /* rightshift */
1588 4, /* size */
1589 0, /* bitsize */
1590 false, /* pc_relative */
1591 0, /* bitpos */
1592 complain_overflow_dont, /* complain_on_overflow */
1593 NULL, /* special_function */
1594 "R_MIPS_GNU_VTINHERIT", /* name */
1595 false, /* partial_inplace */
1596 0, /* src_mask */
1597 0, /* dst_mask */
1598 false); /* pcrel_offset */
1599
1600 /* GNU extension to record C++ vtable member usage */
1601 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1602 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1603 0, /* rightshift */
1604 4, /* size */
1605 0, /* bitsize */
1606 false, /* pc_relative */
1607 0, /* bitpos */
1608 complain_overflow_dont, /* complain_on_overflow */
1609 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1610 "R_MIPS_GNU_VTENTRY", /* name */
1611 false, /* partial_inplace */
1612 0, /* src_mask */
1613 0, /* dst_mask */
1614 false); /* pcrel_offset */
1615
1616 /* Originally a VxWorks extension, but now used for other systems too. */
1617 static reloc_howto_type elf_mips_copy_howto =
1618 HOWTO (R_MIPS_COPY, /* type */
1619 0, /* rightshift */
1620 0, /* this one is variable size */
1621 0, /* bitsize */
1622 false, /* pc_relative */
1623 0, /* bitpos */
1624 complain_overflow_bitfield, /* complain_on_overflow */
1625 _bfd_mips_elf_generic_reloc, /* special_function */
1626 "R_MIPS_COPY", /* name */
1627 false, /* partial_inplace */
1628 0x0, /* src_mask */
1629 0x0, /* dst_mask */
1630 false); /* pcrel_offset */
1631
1632 /* Originally a VxWorks extension, but now used for other systems too. */
1633 static reloc_howto_type elf_mips_jump_slot_howto =
1634 HOWTO (R_MIPS_JUMP_SLOT, /* type */
1635 0, /* rightshift */
1636 4, /* size */
1637 32, /* bitsize */
1638 false, /* pc_relative */
1639 0, /* bitpos */
1640 complain_overflow_bitfield, /* complain_on_overflow */
1641 _bfd_mips_elf_generic_reloc, /* special_function */
1642 "R_MIPS_JUMP_SLOT", /* name */
1643 false, /* partial_inplace */
1644 0x0, /* src_mask */
1645 0x0, /* dst_mask */
1646 false); /* pcrel_offset */
1647
1648 /* Used in EH tables. */
1649 static reloc_howto_type elf_mips_eh_howto =
1650 HOWTO (R_MIPS_EH, /* type */
1651 0, /* rightshift */
1652 4, /* size */
1653 32, /* bitsize */
1654 false, /* pc_relative */
1655 0, /* bitpos */
1656 complain_overflow_signed, /* complain_on_overflow */
1657 _bfd_mips_elf_generic_reloc, /* special_function */
1658 "R_MIPS_EH", /* name */
1659 true, /* partial_inplace */
1660 0xffffffff, /* src_mask */
1661 0xffffffff, /* dst_mask */
1662 false); /* pcrel_offset */
1663
1664 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
1665 dangerous relocation. */
1666
1667 static bool
mips_elf_assign_gp(bfd * output_bfd,bfd_vma * pgp)1668 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
1669 {
1670 unsigned int count;
1671 asymbol **sym;
1672 unsigned int i;
1673
1674 /* If we've already figured out what GP will be, just return it. */
1675 *pgp = _bfd_get_gp_value (output_bfd);
1676 if (*pgp)
1677 return true;
1678
1679 count = bfd_get_symcount (output_bfd);
1680 sym = bfd_get_outsymbols (output_bfd);
1681
1682 /* The linker script will have created a symbol named `_gp' with the
1683 appropriate value. */
1684 if (sym == NULL)
1685 i = count;
1686 else
1687 {
1688 for (i = 0; i < count; i++, sym++)
1689 {
1690 register const char *name;
1691
1692 name = bfd_asymbol_name (*sym);
1693 if (*name == '_' && strcmp (name, "_gp") == 0)
1694 {
1695 *pgp = bfd_asymbol_value (*sym);
1696 _bfd_set_gp_value (output_bfd, *pgp);
1697 break;
1698 }
1699 }
1700 }
1701
1702 if (i >= count)
1703 {
1704 /* Only get the error once. */
1705 *pgp = 4;
1706 _bfd_set_gp_value (output_bfd, *pgp);
1707 return false;
1708 }
1709
1710 return true;
1711 }
1712
1713 /* We have to figure out the gp value, so that we can adjust the
1714 symbol value correctly. We look up the symbol _gp in the output
1715 BFD. If we can't find it, we're stuck. We cache it in the ELF
1716 target data. We don't need to adjust the symbol value for an
1717 external symbol if we are producing relocatable output. */
1718
1719 static bfd_reloc_status_type
mips_elf_final_gp(bfd * output_bfd,asymbol * symbol,bool relocatable,char ** error_message,bfd_vma * pgp)1720 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bool relocatable,
1721 char **error_message, bfd_vma *pgp)
1722 {
1723 if (output_bfd == NULL)
1724 {
1725 *pgp = 0;
1726 return bfd_reloc_undefined;
1727 }
1728
1729 *pgp = _bfd_get_gp_value (output_bfd);
1730 if (*pgp == 0
1731 && (! relocatable
1732 || (symbol->flags & BSF_SECTION_SYM) != 0))
1733 {
1734 if (relocatable)
1735 {
1736 /* Make up a value. */
1737 *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
1738 _bfd_set_gp_value (output_bfd, *pgp);
1739 }
1740 else if (!mips_elf_assign_gp (output_bfd, pgp))
1741 {
1742 *error_message =
1743 (char *) _("GP relative relocation when _gp not defined");
1744 return bfd_reloc_dangerous;
1745 }
1746 }
1747
1748 return bfd_reloc_ok;
1749 }
1750
1751 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1752 become the offset from the gp register. This function also handles
1753 R_MIPS_LITERAL relocations, although those can be handled more
1754 cleverly because the entries in the .lit8 and .lit4 sections can be
1755 merged. */
1756
1757 bfd_reloc_status_type
_bfd_mips_elf32_gprel16_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1758 _bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
1759 asymbol *symbol, void *data,
1760 asection *input_section, bfd *output_bfd,
1761 char **error_message)
1762 {
1763 bool relocatable;
1764 bfd_reloc_status_type ret;
1765 bfd_byte *location;
1766 bfd_vma gp;
1767
1768 /* R_MIPS_LITERAL/R_MICROMIPS_LITERAL relocations are defined for local
1769 symbols only. */
1770 if (literal_reloc_p (reloc_entry->howto->type)
1771 && output_bfd != NULL
1772 && (symbol->flags & BSF_SECTION_SYM) == 0
1773 && (symbol->flags & BSF_LOCAL) != 0)
1774 {
1775 *error_message = (char *)
1776 _("literal relocation occurs for an external symbol");
1777 return bfd_reloc_outofrange;
1778 }
1779
1780 if (output_bfd != NULL)
1781 relocatable = true;
1782 else
1783 {
1784 relocatable = false;
1785 output_bfd = input_section->output_section->owner;
1786 }
1787
1788 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1789 &gp);
1790 if (ret != bfd_reloc_ok)
1791 return ret;
1792
1793 location = (bfd_byte *) data + reloc_entry->address;
1794 _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, false,
1795 location);
1796 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1797 input_section, relocatable,
1798 data, gp);
1799 _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1800 location);
1801
1802 return ret;
1803 }
1804
1805 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1806 become the offset from the gp register. */
1807
1808 static bfd_reloc_status_type
mips_elf_gprel32_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1809 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1810 void *data, asection *input_section, bfd *output_bfd,
1811 char **error_message)
1812 {
1813 bool relocatable;
1814 bfd_reloc_status_type ret;
1815 bfd_vma gp;
1816
1817 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1818 if (output_bfd != NULL
1819 && (symbol->flags & BSF_SECTION_SYM) == 0
1820 && (symbol->flags & BSF_LOCAL) != 0)
1821 {
1822 *error_message = (char *)
1823 _("32bits gp relative relocation occurs for an external symbol");
1824 return bfd_reloc_outofrange;
1825 }
1826
1827 if (output_bfd != NULL)
1828 relocatable = true;
1829 else
1830 {
1831 relocatable = false;
1832 output_bfd = input_section->output_section->owner;
1833 }
1834
1835 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
1836 error_message, &gp);
1837 if (ret != bfd_reloc_ok)
1838 return ret;
1839
1840 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1841 relocatable, data, gp);
1842 }
1843
1844 static bfd_reloc_status_type
gprel32_with_gp(bfd * abfd,asymbol * symbol,arelent * reloc_entry,asection * input_section,bool relocatable,void * data,bfd_vma gp)1845 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1846 asection *input_section, bool relocatable,
1847 void *data, bfd_vma gp)
1848 {
1849 bfd_vma relocation;
1850 bfd_vma val;
1851
1852 if (bfd_is_com_section (symbol->section))
1853 relocation = 0;
1854 else
1855 relocation = symbol->value;
1856
1857 relocation += symbol->section->output_section->vma;
1858 relocation += symbol->section->output_offset;
1859
1860 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1861 return bfd_reloc_outofrange;
1862
1863 /* Set val to the offset into the section or symbol. */
1864 val = reloc_entry->addend;
1865
1866 if (reloc_entry->howto->partial_inplace)
1867 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1868
1869 /* Adjust val for the final section location and GP value. If we
1870 are producing relocatable output, we don't want to do this for
1871 an external symbol. */
1872 if (! relocatable
1873 || (symbol->flags & BSF_SECTION_SYM) != 0)
1874 val += relocation - gp;
1875
1876 if (reloc_entry->howto->partial_inplace)
1877 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1878 else
1879 reloc_entry->addend = val;
1880
1881 if (relocatable)
1882 reloc_entry->address += input_section->output_offset;
1883
1884 return bfd_reloc_ok;
1885 }
1886
1887 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1888 generated when addresses are 64 bits. The upper 32 bits are a simple
1889 sign extension. */
1890
1891 static bfd_reloc_status_type
mips32_64bit_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol ATTRIBUTE_UNUSED,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1892 mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
1893 asymbol *symbol ATTRIBUTE_UNUSED,
1894 void *data, asection *input_section,
1895 bfd *output_bfd, char **error_message)
1896 {
1897 bfd_reloc_status_type r;
1898 arelent reloc32;
1899 unsigned long val;
1900 bfd_size_type addr;
1901
1902 /* Do a normal 32 bit relocation on the lower 32 bits. */
1903 reloc32 = *reloc_entry;
1904 if (bfd_big_endian (abfd))
1905 reloc32.address += 4;
1906 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1907 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1908 output_bfd, error_message);
1909
1910 /* Sign extend into the upper 32 bits. */
1911 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1912 if ((val & 0x80000000) != 0)
1913 val = 0xffffffff;
1914 else
1915 val = 0;
1916 addr = reloc_entry->address;
1917 if (bfd_little_endian (abfd))
1918 addr += 4;
1919 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
1920
1921 return r;
1922 }
1923
1924 /* Handle a mips16 GP relative reloc. */
1925
1926 static bfd_reloc_status_type
mips16_gprel_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1927 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1928 void *data, asection *input_section, bfd *output_bfd,
1929 char **error_message)
1930 {
1931 bool relocatable;
1932 bfd_reloc_status_type ret;
1933 bfd_byte *location;
1934 bfd_vma gp;
1935
1936 /* If we're relocating, and this is an external symbol, we don't want
1937 to change anything. */
1938 if (output_bfd != NULL
1939 && (symbol->flags & BSF_SECTION_SYM) == 0
1940 && (symbol->flags & BSF_LOCAL) != 0)
1941 {
1942 reloc_entry->address += input_section->output_offset;
1943 return bfd_reloc_ok;
1944 }
1945
1946 if (output_bfd != NULL)
1947 relocatable = true;
1948 else
1949 {
1950 relocatable = false;
1951 output_bfd = input_section->output_section->owner;
1952 }
1953
1954 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1955 &gp);
1956 if (ret != bfd_reloc_ok)
1957 return ret;
1958
1959 location = (bfd_byte *) data + reloc_entry->address;
1960 _bfd_mips_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, false,
1961 location);
1962 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1963 input_section, relocatable,
1964 data, gp);
1965 _bfd_mips_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1966 location);
1967
1968 return ret;
1969 }
1970
1971 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1972
1973 struct elf_reloc_map {
1974 bfd_reloc_code_real_type bfd_val;
1975 enum elf_mips_reloc_type elf_val;
1976 };
1977
1978 static const struct elf_reloc_map mips_reloc_map[] =
1979 {
1980 { BFD_RELOC_NONE, R_MIPS_NONE },
1981 { BFD_RELOC_MIPS_16, R_MIPS_16 },
1982 { BFD_RELOC_32, R_MIPS_32 },
1983 /* There is no BFD reloc for R_MIPS_REL32. */
1984 { BFD_RELOC_64, R_MIPS_64 },
1985 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1986 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1987 { BFD_RELOC_LO16, R_MIPS_LO16 },
1988 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1989 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1990 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1991 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
1992 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1993 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1994 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1995 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1996 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1997 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1998 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1999 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
2000 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
2001 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
2002 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR },
2003 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
2004 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
2005 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
2006 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
2007 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
2008 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
2009 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
2010 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
2011 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
2012 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
2013 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
2014 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
2015 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 },
2016 { BFD_RELOC_MIPS_21_PCREL_S2, R_MIPS_PC21_S2 },
2017 { BFD_RELOC_MIPS_26_PCREL_S2, R_MIPS_PC26_S2 },
2018 { BFD_RELOC_MIPS_18_PCREL_S3, R_MIPS_PC18_S3 },
2019 { BFD_RELOC_MIPS_19_PCREL_S2, R_MIPS_PC19_S2 },
2020 { BFD_RELOC_HI16_S_PCREL, R_MIPS_PCHI16 },
2021 { BFD_RELOC_LO16_PCREL, R_MIPS_PCLO16 }
2022 };
2023
2024 static const struct elf_reloc_map mips16_reloc_map[] =
2025 {
2026 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
2027 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
2028 { BFD_RELOC_MIPS16_GOT16, R_MIPS16_GOT16 - R_MIPS16_min },
2029 { BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min },
2030 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
2031 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
2032 { BFD_RELOC_MIPS16_TLS_GD, R_MIPS16_TLS_GD - R_MIPS16_min },
2033 { BFD_RELOC_MIPS16_TLS_LDM, R_MIPS16_TLS_LDM - R_MIPS16_min },
2034 { BFD_RELOC_MIPS16_TLS_DTPREL_HI16,
2035 R_MIPS16_TLS_DTPREL_HI16 - R_MIPS16_min },
2036 { BFD_RELOC_MIPS16_TLS_DTPREL_LO16,
2037 R_MIPS16_TLS_DTPREL_LO16 - R_MIPS16_min },
2038 { BFD_RELOC_MIPS16_TLS_GOTTPREL, R_MIPS16_TLS_GOTTPREL - R_MIPS16_min },
2039 { BFD_RELOC_MIPS16_TLS_TPREL_HI16, R_MIPS16_TLS_TPREL_HI16 - R_MIPS16_min },
2040 { BFD_RELOC_MIPS16_TLS_TPREL_LO16, R_MIPS16_TLS_TPREL_LO16 - R_MIPS16_min },
2041 { BFD_RELOC_MIPS16_16_PCREL_S1, R_MIPS16_PC16_S1 - R_MIPS16_min }
2042 };
2043
2044 static const struct elf_reloc_map micromips_reloc_map[] =
2045 {
2046 { BFD_RELOC_MICROMIPS_JMP, R_MICROMIPS_26_S1 - R_MICROMIPS_min },
2047 { BFD_RELOC_MICROMIPS_HI16_S, R_MICROMIPS_HI16 - R_MICROMIPS_min },
2048 { BFD_RELOC_MICROMIPS_LO16, R_MICROMIPS_LO16 - R_MICROMIPS_min },
2049 { BFD_RELOC_MICROMIPS_GPREL16, R_MICROMIPS_GPREL16 - R_MICROMIPS_min },
2050 { BFD_RELOC_MICROMIPS_LITERAL, R_MICROMIPS_LITERAL - R_MICROMIPS_min },
2051 { BFD_RELOC_MICROMIPS_GOT16, R_MICROMIPS_GOT16 - R_MICROMIPS_min },
2052 { BFD_RELOC_MICROMIPS_7_PCREL_S1, R_MICROMIPS_PC7_S1 - R_MICROMIPS_min },
2053 { BFD_RELOC_MICROMIPS_10_PCREL_S1, R_MICROMIPS_PC10_S1 - R_MICROMIPS_min },
2054 { BFD_RELOC_MICROMIPS_16_PCREL_S1, R_MICROMIPS_PC16_S1 - R_MICROMIPS_min },
2055 { BFD_RELOC_MICROMIPS_CALL16, R_MICROMIPS_CALL16 - R_MICROMIPS_min },
2056 { BFD_RELOC_MICROMIPS_GOT_DISP, R_MICROMIPS_GOT_DISP - R_MICROMIPS_min },
2057 { BFD_RELOC_MICROMIPS_GOT_PAGE, R_MICROMIPS_GOT_PAGE - R_MICROMIPS_min },
2058 { BFD_RELOC_MICROMIPS_GOT_OFST, R_MICROMIPS_GOT_OFST - R_MICROMIPS_min },
2059 { BFD_RELOC_MICROMIPS_GOT_HI16, R_MICROMIPS_GOT_HI16 - R_MICROMIPS_min },
2060 { BFD_RELOC_MICROMIPS_GOT_LO16, R_MICROMIPS_GOT_LO16 - R_MICROMIPS_min },
2061 { BFD_RELOC_MICROMIPS_SUB, R_MICROMIPS_SUB - R_MICROMIPS_min },
2062 { BFD_RELOC_MICROMIPS_HIGHER, R_MICROMIPS_HIGHER - R_MICROMIPS_min },
2063 { BFD_RELOC_MICROMIPS_HIGHEST, R_MICROMIPS_HIGHEST - R_MICROMIPS_min },
2064 { BFD_RELOC_MICROMIPS_CALL_HI16, R_MICROMIPS_CALL_HI16 - R_MICROMIPS_min },
2065 { BFD_RELOC_MICROMIPS_CALL_LO16, R_MICROMIPS_CALL_LO16 - R_MICROMIPS_min },
2066 { BFD_RELOC_MICROMIPS_SCN_DISP, R_MICROMIPS_SCN_DISP - R_MICROMIPS_min },
2067 { BFD_RELOC_MICROMIPS_JALR, R_MICROMIPS_JALR - R_MICROMIPS_min },
2068 /* There is no BFD reloc for R_MICROMIPS_HI0_LO16. */
2069 { BFD_RELOC_MICROMIPS_TLS_GD, R_MICROMIPS_TLS_GD - R_MICROMIPS_min },
2070 { BFD_RELOC_MICROMIPS_TLS_LDM, R_MICROMIPS_TLS_LDM - R_MICROMIPS_min },
2071 { BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16,
2072 R_MICROMIPS_TLS_DTPREL_HI16 - R_MICROMIPS_min },
2073 { BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16,
2074 R_MICROMIPS_TLS_DTPREL_LO16 - R_MICROMIPS_min },
2075 { BFD_RELOC_MICROMIPS_TLS_GOTTPREL,
2076 R_MICROMIPS_TLS_GOTTPREL - R_MICROMIPS_min },
2077 { BFD_RELOC_MICROMIPS_TLS_TPREL_HI16,
2078 R_MICROMIPS_TLS_TPREL_HI16 - R_MICROMIPS_min },
2079 { BFD_RELOC_MICROMIPS_TLS_TPREL_LO16,
2080 R_MICROMIPS_TLS_TPREL_LO16 - R_MICROMIPS_min },
2081 /* There is no BFD reloc for R_MICROMIPS_GPREL7_S2. */
2082 /* There is no BFD reloc for R_MICROMIPS_PC23_S2. */
2083 };
2084
2085 /* Given a BFD reloc type, return a howto structure. */
2086
2087 static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd,bfd_reloc_code_real_type code)2088 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
2089 {
2090 unsigned int i;
2091 reloc_howto_type *howto_table = elf_mips_howto_table_rel;
2092 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
2093 reloc_howto_type *howto_micromips_table = elf_micromips_howto_table_rel;
2094
2095 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
2096 i++)
2097 {
2098 if (mips_reloc_map[i].bfd_val == code)
2099 return &howto_table[(int) mips_reloc_map[i].elf_val];
2100 }
2101
2102 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
2103 i++)
2104 {
2105 if (mips16_reloc_map[i].bfd_val == code)
2106 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
2107 }
2108
2109 for (i = 0; i < sizeof (micromips_reloc_map) / sizeof (struct elf_reloc_map);
2110 i++)
2111 {
2112 if (micromips_reloc_map[i].bfd_val == code)
2113 return &howto_micromips_table[(int) micromips_reloc_map[i].elf_val];
2114 }
2115
2116 switch (code)
2117 {
2118 default:
2119 bfd_set_error (bfd_error_bad_value);
2120 return NULL;
2121
2122 case BFD_RELOC_CTOR:
2123 /* We need to handle BFD_RELOC_CTOR specially.
2124 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
2125 size of addresses of the ABI. */
2126 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
2127 | E_MIPS_ABI_EABI64)) != 0)
2128 return &elf_mips_ctor64_howto;
2129 else
2130 return &howto_table[(int) R_MIPS_32];
2131
2132 case BFD_RELOC_VTABLE_INHERIT:
2133 return &elf_mips_gnu_vtinherit_howto;
2134 case BFD_RELOC_VTABLE_ENTRY:
2135 return &elf_mips_gnu_vtentry_howto;
2136 case BFD_RELOC_32_PCREL:
2137 return &elf_mips_gnu_pcrel32;
2138 case BFD_RELOC_MIPS_COPY:
2139 return &elf_mips_copy_howto;
2140 case BFD_RELOC_MIPS_JUMP_SLOT:
2141 return &elf_mips_jump_slot_howto;
2142 case BFD_RELOC_MIPS_EH:
2143 return &elf_mips_eh_howto;
2144 }
2145 }
2146
2147 static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)2148 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2149 const char *r_name)
2150 {
2151 unsigned int i;
2152
2153 for (i = 0;
2154 i < (sizeof (elf_mips_howto_table_rel)
2155 / sizeof (elf_mips_howto_table_rel[0]));
2156 i++)
2157 if (elf_mips_howto_table_rel[i].name != NULL
2158 && strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0)
2159 return &elf_mips_howto_table_rel[i];
2160
2161 for (i = 0;
2162 i < (sizeof (elf_mips16_howto_table_rel)
2163 / sizeof (elf_mips16_howto_table_rel[0]));
2164 i++)
2165 if (elf_mips16_howto_table_rel[i].name != NULL
2166 && strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0)
2167 return &elf_mips16_howto_table_rel[i];
2168
2169 for (i = 0;
2170 i < (sizeof (elf_micromips_howto_table_rel)
2171 / sizeof (elf_micromips_howto_table_rel[0]));
2172 i++)
2173 if (elf_micromips_howto_table_rel[i].name != NULL
2174 && strcasecmp (elf_micromips_howto_table_rel[i].name, r_name) == 0)
2175 return &elf_micromips_howto_table_rel[i];
2176
2177 if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0)
2178 return &elf_mips_gnu_pcrel32;
2179 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
2180 return &elf_mips_gnu_rel16_s2;
2181 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
2182 return &elf_mips_gnu_vtinherit_howto;
2183 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
2184 return &elf_mips_gnu_vtentry_howto;
2185 if (strcasecmp (elf_mips_copy_howto.name, r_name) == 0)
2186 return &elf_mips_copy_howto;
2187 if (strcasecmp (elf_mips_jump_slot_howto.name, r_name) == 0)
2188 return &elf_mips_jump_slot_howto;
2189 if (strcasecmp (elf_mips_eh_howto.name, r_name) == 0)
2190 return &elf_mips_eh_howto;
2191
2192 return NULL;
2193 }
2194
2195 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2196
2197 static reloc_howto_type *
mips_elf32_rtype_to_howto(bfd * abfd,unsigned int r_type,bool rela_p ATTRIBUTE_UNUSED)2198 mips_elf32_rtype_to_howto (bfd *abfd,
2199 unsigned int r_type,
2200 bool rela_p ATTRIBUTE_UNUSED)
2201 {
2202 reloc_howto_type *howto = NULL;
2203
2204 switch (r_type)
2205 {
2206 case R_MIPS_GNU_VTINHERIT:
2207 return &elf_mips_gnu_vtinherit_howto;
2208 case R_MIPS_GNU_VTENTRY:
2209 return &elf_mips_gnu_vtentry_howto;
2210 case R_MIPS_GNU_REL16_S2:
2211 return &elf_mips_gnu_rel16_s2;
2212 case R_MIPS_PC32:
2213 return &elf_mips_gnu_pcrel32;
2214 case R_MIPS_COPY:
2215 return &elf_mips_copy_howto;
2216 case R_MIPS_JUMP_SLOT:
2217 return &elf_mips_jump_slot_howto;
2218 case R_MIPS_EH:
2219 return &elf_mips_eh_howto;
2220 default:
2221 if (r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max)
2222 howto = &elf_micromips_howto_table_rel[r_type - R_MICROMIPS_min];
2223 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
2224 howto = &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
2225 if (r_type < R_MIPS_max)
2226 howto = &elf_mips_howto_table_rel[r_type];
2227 if (howto != NULL && howto->name != NULL)
2228 return howto;
2229
2230 _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
2231 abfd, r_type);
2232 bfd_set_error (bfd_error_bad_value);
2233 return NULL;
2234 }
2235 }
2236
2237 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2238
2239 static bool
mips_info_to_howto_rel(bfd * abfd,arelent * cache_ptr,Elf_Internal_Rela * dst)2240 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
2241 {
2242 unsigned int r_type;
2243
2244 r_type = ELF32_R_TYPE (dst->r_info);
2245 cache_ptr->howto = mips_elf32_rtype_to_howto (abfd, r_type, false);
2246
2247 if (cache_ptr->howto == NULL)
2248 return false;
2249
2250 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
2251 value for the object file. We get the addend now, rather than
2252 when we do the relocation, because the symbol manipulations done
2253 by the linker may cause us to lose track of the input BFD. */
2254 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
2255 && (gprel16_reloc_p (r_type) || literal_reloc_p (r_type)))
2256 cache_ptr->addend = elf_gp (abfd);
2257
2258 return true;
2259 }
2260
2261 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
2262
2263 static bool
mips_info_to_howto_rela(bfd * abfd,arelent * cache_ptr,Elf_Internal_Rela * dst)2264 mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
2265 {
2266 return mips_info_to_howto_rel (abfd, cache_ptr, dst);
2267
2268 /* If we ever need to do any extra processing with dst->r_addend
2269 (the field omitted in an Elf_Internal_Rel) we can do it here. */
2270 }
2271
2272 /* Determine whether a symbol is global for the purposes of splitting
2273 the symbol table into global symbols and local symbols. At least
2274 on Irix 5, this split must be between section symbols and all other
2275 symbols. On most ELF targets the split is between static symbols
2276 and externally visible symbols. */
2277
2278 static bool
mips_elf_sym_is_global(bfd * abfd ATTRIBUTE_UNUSED,asymbol * sym)2279 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
2280 {
2281 if (SGI_COMPAT (abfd))
2282 return (sym->flags & BSF_SECTION_SYM) == 0;
2283 else
2284 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
2285 || bfd_is_und_section (bfd_asymbol_section (sym))
2286 || bfd_is_com_section (bfd_asymbol_section (sym)));
2287 }
2288
2289 /* Likewise, return TRUE if the symbol table split overall must be
2290 between section symbols and all other symbols. */
2291 static bool
mips_elf32_elfsym_local_is_section(bfd * abfd)2292 mips_elf32_elfsym_local_is_section (bfd *abfd)
2293 {
2294 return SGI_COMPAT (abfd);
2295 }
2296
2297 /* Set the right machine number for a MIPS ELF file. */
2298
2299 static bool
mips_elf32_object_p(bfd * abfd)2300 mips_elf32_object_p (bfd *abfd)
2301 {
2302 unsigned long mach;
2303
2304 if (ABI_N32_P (abfd))
2305 return false;
2306
2307 /* Irix 5 and 6 are broken. Object file symbol tables are not always
2308 sorted correctly such that local symbols precede global symbols,
2309 and the sh_info field in the symbol table is not always right. */
2310 if (SGI_COMPAT (abfd))
2311 elf_bad_symtab (abfd) = true;
2312
2313 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
2314 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
2315 return true;
2316 }
2317
2318 /* MIPS ELF local labels start with '$', not 'L'. */
2319
2320 static bool
mips_elf_is_local_label_name(bfd * abfd,const char * name)2321 mips_elf_is_local_label_name (bfd *abfd, const char *name)
2322 {
2323 if (name[0] == '$')
2324 return true;
2325
2326 /* On Irix 6, the labels go back to starting with '.', so we accept
2327 the generic ELF local label syntax as well. */
2328 return _bfd_elf_is_local_label_name (abfd, name);
2329 }
2330
2331 /* Support for core dump NOTE sections. */
2332 static bool
elf32_mips_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)2333 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2334 {
2335 int offset;
2336 unsigned int size;
2337
2338 switch (note->descsz)
2339 {
2340 default:
2341 return false;
2342
2343 case 256: /* Linux/MIPS */
2344 /* pr_cursig */
2345 elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
2346
2347 /* pr_pid */
2348 elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
2349
2350 /* pr_reg */
2351 offset = 72;
2352 size = 180;
2353
2354 break;
2355 }
2356
2357 /* Make a ".reg/999" section. */
2358 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2359 size, note->descpos + offset);
2360 }
2361
2362 static bool
elf32_mips_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)2363 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2364 {
2365 switch (note->descsz)
2366 {
2367 default:
2368 return false;
2369
2370 case 128: /* Linux/MIPS elf_prpsinfo */
2371 elf_tdata (abfd)->core->pid
2372 = bfd_get_32 (abfd, note->descdata + 16);
2373 elf_tdata (abfd)->core->program
2374 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2375 elf_tdata (abfd)->core->command
2376 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2377 }
2378
2379 /* Note that for some reason, a spurious space is tacked
2380 onto the end of the args in some (at least one anyway)
2381 implementations, so strip it off if it exists. */
2382
2383 {
2384 char *command = elf_tdata (abfd)->core->command;
2385 int n = strlen (command);
2386
2387 if (0 < n && command[n - 1] == ' ')
2388 command[n - 1] = '\0';
2389 }
2390
2391 return true;
2392 }
2393
2394 /* Write Linux core PRSTATUS note into core file. */
2395
2396 static char *
elf32_mips_write_core_note(bfd * abfd,char * buf,int * bufsiz,int note_type,...)2397 elf32_mips_write_core_note (bfd *abfd, char *buf, int *bufsiz, int note_type,
2398 ...)
2399 {
2400 switch (note_type)
2401 {
2402 default:
2403 return NULL;
2404
2405 case NT_PRPSINFO:
2406 BFD_FAIL ();
2407 return NULL;
2408
2409 case NT_PRSTATUS:
2410 {
2411 char data[256];
2412 va_list ap;
2413 long pid;
2414 int cursig;
2415 const void *greg;
2416
2417 va_start (ap, note_type);
2418 memset (data, 0, 72);
2419 pid = va_arg (ap, long);
2420 bfd_put_32 (abfd, pid, data + 24);
2421 cursig = va_arg (ap, int);
2422 bfd_put_16 (abfd, cursig, data + 12);
2423 greg = va_arg (ap, const void *);
2424 memcpy (data + 72, greg, 180);
2425 memset (data + 252, 0, 4);
2426 va_end (ap);
2427 return elfcore_write_note (abfd, buf, bufsiz,
2428 "CORE", note_type, data, sizeof (data));
2429 }
2430 }
2431 }
2432
2433 /* Remove the magic _gp_disp symbol from the symbol tables. */
2434
2435 static bool
elf32_mips_fixup_symbol(struct bfd_link_info * info,struct elf_link_hash_entry * h)2436 elf32_mips_fixup_symbol (struct bfd_link_info *info,
2437 struct elf_link_hash_entry *h)
2438 {
2439 if (strcmp (h->root.root.string, "_gp_disp") == 0)
2440 _bfd_elf_link_hash_hide_symbol (info, h, true);
2441 return true;
2442 }
2443
2444 /* Depending on the target vector we generate some version of Irix
2445 executables or "normal" MIPS ELF ABI executables. */
2446 static irix_compat_t
elf32_mips_irix_compat(bfd * abfd)2447 elf32_mips_irix_compat (bfd *abfd)
2448 {
2449 if ((abfd->xvec == &mips_elf32_be_vec)
2450 || (abfd->xvec == &mips_elf32_le_vec))
2451 return ict_irix5;
2452 else
2453 return ict_none;
2454 }
2455
2456 /* ECOFF swapping routines. These are used when dealing with the
2457 .mdebug section, which is in the ECOFF debugging format. */
2458 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
2459 /* Symbol table magic number. */
2460 magicSym,
2461 /* Alignment of debugging information. E.g., 4. */
2462 4,
2463 /* Sizes of external symbolic information. */
2464 sizeof (struct hdr_ext),
2465 sizeof (struct dnr_ext),
2466 sizeof (struct pdr_ext),
2467 sizeof (struct sym_ext),
2468 sizeof (struct opt_ext),
2469 sizeof (struct fdr_ext),
2470 sizeof (struct rfd_ext),
2471 sizeof (struct ext_ext),
2472 /* Functions to swap in external symbolic data. */
2473 ecoff_swap_hdr_in,
2474 ecoff_swap_dnr_in,
2475 ecoff_swap_pdr_in,
2476 ecoff_swap_sym_in,
2477 ecoff_swap_opt_in,
2478 ecoff_swap_fdr_in,
2479 ecoff_swap_rfd_in,
2480 ecoff_swap_ext_in,
2481 _bfd_ecoff_swap_tir_in,
2482 _bfd_ecoff_swap_rndx_in,
2483 /* Functions to swap out external symbolic data. */
2484 ecoff_swap_hdr_out,
2485 ecoff_swap_dnr_out,
2486 ecoff_swap_pdr_out,
2487 ecoff_swap_sym_out,
2488 ecoff_swap_opt_out,
2489 ecoff_swap_fdr_out,
2490 ecoff_swap_rfd_out,
2491 ecoff_swap_ext_out,
2492 _bfd_ecoff_swap_tir_out,
2493 _bfd_ecoff_swap_rndx_out,
2494 /* Function to read in symbolic data. */
2495 _bfd_mips_elf_read_ecoff_info
2496 };
2497
2498 #define ELF_ARCH bfd_arch_mips
2499 #define ELF_TARGET_ID MIPS_ELF_DATA
2500 #define ELF_MACHINE_CODE EM_MIPS
2501
2502 #define elf_backend_collect true
2503 #define elf_backend_type_change_ok true
2504 #define elf_backend_can_gc_sections true
2505 #define elf_backend_gc_mark_extra_sections \
2506 _bfd_mips_elf_gc_mark_extra_sections
2507 #define elf_info_to_howto mips_info_to_howto_rela
2508 #define elf_info_to_howto_rel mips_info_to_howto_rel
2509 #define elf_backend_sym_is_global mips_elf_sym_is_global
2510 #define elf_backend_object_p mips_elf32_object_p
2511 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
2512 #define elf_backend_section_processing _bfd_mips_elf_section_processing
2513 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
2514 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
2515 #define elf_backend_section_from_bfd_section \
2516 _bfd_mips_elf_section_from_bfd_section
2517 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
2518 #define elf_backend_link_output_symbol_hook \
2519 _bfd_mips_elf_link_output_symbol_hook
2520 #define elf_backend_create_dynamic_sections \
2521 _bfd_mips_elf_create_dynamic_sections
2522 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
2523 #define elf_backend_merge_symbol_attribute \
2524 _bfd_mips_elf_merge_symbol_attribute
2525 #define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag
2526 #define elf_backend_adjust_dynamic_symbol \
2527 _bfd_mips_elf_adjust_dynamic_symbol
2528 #define elf_backend_always_size_sections \
2529 _bfd_mips_elf_always_size_sections
2530 #define elf_backend_size_dynamic_sections \
2531 _bfd_mips_elf_size_dynamic_sections
2532 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
2533 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
2534 #define elf_backend_finish_dynamic_symbol \
2535 _bfd_mips_elf_finish_dynamic_symbol
2536 #define elf_backend_finish_dynamic_sections \
2537 _bfd_mips_elf_finish_dynamic_sections
2538 #define elf_backend_final_write_processing \
2539 _bfd_mips_elf_final_write_processing
2540 #define elf_backend_additional_program_headers \
2541 _bfd_mips_elf_additional_program_headers
2542 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
2543 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
2544 #define elf_backend_copy_indirect_symbol \
2545 _bfd_mips_elf_copy_indirect_symbol
2546 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
2547 #define elf_backend_fixup_symbol elf32_mips_fixup_symbol
2548 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
2549 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
2550 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
2551
2552 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
2553 #define elf_backend_want_dynrelro 1
2554 #define elf_backend_may_use_rel_p 1
2555 #define elf_backend_may_use_rela_p 0
2556 #define elf_backend_default_use_rela_p 0
2557 #define elf_backend_sign_extend_vma true
2558 #define elf_backend_plt_readonly 1
2559
2560 #define elf_backend_discard_info _bfd_mips_elf_discard_info
2561 #define elf_backend_ignore_discarded_relocs \
2562 _bfd_mips_elf_ignore_discarded_relocs
2563 #define elf_backend_write_section _bfd_mips_elf_write_section
2564 #define elf_backend_elfsym_local_is_section \
2565 mips_elf32_elfsym_local_is_section
2566 #define elf_backend_mips_irix_compat elf32_mips_irix_compat
2567 #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
2568 #define elf_backend_sort_relocs_p _bfd_mips_elf_sort_relocs_p
2569
2570 #define bfd_elf32_bfd_is_local_label_name \
2571 mips_elf_is_local_label_name
2572 #define bfd_elf32_bfd_is_target_special_symbol \
2573 _bfd_mips_elf_is_target_special_symbol
2574 #define bfd_elf32_get_synthetic_symtab _bfd_mips_elf_get_synthetic_symtab
2575 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
2576 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
2577 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
2578 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
2579 #define bfd_elf32_bfd_get_relocated_section_contents \
2580 _bfd_elf_mips_get_relocated_section_contents
2581 #define bfd_elf32_bfd_link_hash_table_create \
2582 _bfd_mips_elf_link_hash_table_create
2583 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
2584 #define bfd_elf32_bfd_merge_private_bfd_data \
2585 _bfd_mips_elf_merge_private_bfd_data
2586 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
2587 #define bfd_elf32_bfd_print_private_bfd_data \
2588 _bfd_mips_elf_print_private_bfd_data
2589 #define bfd_elf32_bfd_relax_section _bfd_mips_elf_relax_section
2590 #define bfd_elf32_mkobject _bfd_mips_elf_mkobject
2591
2592 /* Support for SGI-ish mips targets. */
2593 #define TARGET_LITTLE_SYM mips_elf32_le_vec
2594 #define TARGET_LITTLE_NAME "elf32-littlemips"
2595 #define TARGET_BIG_SYM mips_elf32_be_vec
2596 #define TARGET_BIG_NAME "elf32-bigmips"
2597
2598 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
2599 a value of 0x1000, and we are compatible. */
2600 #define ELF_MAXPAGESIZE 0x1000
2601 #define ELF_COMMONPAGESIZE 0x1000
2602
2603 #include "elf32-target.h"
2604
2605 /* Support for traditional mips targets. */
2606 #undef TARGET_LITTLE_SYM
2607 #undef TARGET_LITTLE_NAME
2608 #undef TARGET_BIG_SYM
2609 #undef TARGET_BIG_NAME
2610
2611 #undef ELF_MAXPAGESIZE
2612 #undef ELF_COMMONPAGESIZE
2613
2614 #define TARGET_LITTLE_SYM mips_elf32_trad_le_vec
2615 #define TARGET_LITTLE_NAME "elf32-tradlittlemips"
2616 #define TARGET_BIG_SYM mips_elf32_trad_be_vec
2617 #define TARGET_BIG_NAME "elf32-tradbigmips"
2618
2619 /* The MIPS ABI says at Page 5-1:
2620 Virtual addresses and file offsets for MIPS segments are congruent
2621 modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
2622 is the maximum page size, the files are suitable for paging
2623 regardless of physical page size. */
2624 #define ELF_MAXPAGESIZE 0x10000
2625 #define ELF_COMMONPAGESIZE 0x1000
2626 #define elf32_bed elf32_tradbed
2627
2628 #undef elf_backend_write_core_note
2629 #define elf_backend_write_core_note elf32_mips_write_core_note
2630
2631 /* Include the target file again for this target. */
2632 #include "elf32-target.h"
2633
2634 /* FreeBSD support. */
2635
2636 #undef TARGET_LITTLE_SYM
2637 #undef TARGET_LITTLE_NAME
2638 #undef TARGET_BIG_SYM
2639 #undef TARGET_BIG_NAME
2640
2641 #define TARGET_LITTLE_SYM mips_elf32_tradfbsd_le_vec
2642 #define TARGET_LITTLE_NAME "elf32-tradlittlemips-freebsd"
2643 #define TARGET_BIG_SYM mips_elf32_tradfbsd_be_vec
2644 #define TARGET_BIG_NAME "elf32-tradbigmips-freebsd"
2645
2646 #undef ELF_OSABI
2647 #define ELF_OSABI ELFOSABI_FREEBSD
2648
2649 #undef elf32_bed
2650 #define elf32_bed elf32_fbsd_tradbed
2651
2652 #undef elf_backend_write_core_note
2653
2654 #include "elf32-target.h"
2655 /* Implement elf_backend_final_write_processing for VxWorks. */
2656
2657 static bool
mips_vxworks_final_write_processing(bfd * abfd)2658 mips_vxworks_final_write_processing (bfd *abfd)
2659 {
2660 _bfd_mips_final_write_processing (abfd);
2661 return elf_vxworks_final_write_processing (abfd);
2662 }
2663
2664 #undef TARGET_LITTLE_SYM
2665 #undef TARGET_LITTLE_NAME
2666 #undef TARGET_BIG_SYM
2667 #undef TARGET_BIG_NAME
2668
2669 #undef ELF_MAXPAGESIZE
2670 #undef ELF_COMMONPAGESIZE
2671
2672 #define TARGET_LITTLE_SYM mips_elf32_vxworks_le_vec
2673 #define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
2674 #define TARGET_BIG_SYM mips_elf32_vxworks_be_vec
2675 #define TARGET_BIG_NAME "elf32-bigmips-vxworks"
2676 #undef ELF_OSABI
2677
2678 #undef elf32_bed
2679 #define elf32_bed elf32_mips_vxworks_bed
2680
2681 #define ELF_MAXPAGESIZE 0x1000
2682 #define ELF_COMMONPAGESIZE 0x1000
2683
2684 #undef ELF_TARGET_OS
2685 #define ELF_TARGET_OS is_vxworks
2686
2687 #undef elf_backend_want_got_plt
2688 #define elf_backend_want_got_plt 1
2689 #undef elf_backend_want_plt_sym
2690 #define elf_backend_want_plt_sym 1
2691 #undef elf_backend_may_use_rel_p
2692 #define elf_backend_may_use_rel_p 0
2693 #undef elf_backend_may_use_rela_p
2694 #define elf_backend_may_use_rela_p 1
2695 #undef elf_backend_default_use_rela_p
2696 #define elf_backend_default_use_rela_p 1
2697 #undef elf_backend_got_header_size
2698 #define elf_backend_got_header_size (4 * 3)
2699 #undef elf_backend_dtrel_excludes_plt
2700 #define elf_backend_dtrel_excludes_plt 1
2701
2702 #undef elf_backend_finish_dynamic_symbol
2703 #define elf_backend_finish_dynamic_symbol \
2704 _bfd_mips_vxworks_finish_dynamic_symbol
2705 #undef bfd_elf32_bfd_link_hash_table_create
2706 #define bfd_elf32_bfd_link_hash_table_create \
2707 _bfd_mips_vxworks_link_hash_table_create
2708 #undef elf_backend_add_symbol_hook
2709 #define elf_backend_add_symbol_hook \
2710 elf_vxworks_add_symbol_hook
2711 #undef elf_backend_link_output_symbol_hook
2712 #define elf_backend_link_output_symbol_hook \
2713 elf_vxworks_link_output_symbol_hook
2714 #undef elf_backend_emit_relocs
2715 #define elf_backend_emit_relocs \
2716 elf_vxworks_emit_relocs
2717 #undef elf_backend_final_write_processing
2718 #define elf_backend_final_write_processing \
2719 mips_vxworks_final_write_processing
2720
2721 #undef elf_backend_additional_program_headers
2722 #undef elf_backend_modify_segment_map
2723 #undef elf_backend_symbol_processing
2724 /* NOTE: elf_backend_rela_normal is not defined for MIPS. */
2725
2726 #undef bfd_elf32_get_synthetic_symtab
2727
2728 #include "elf32-target.h"
2729