1 /* MIPS-specific support for 64-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
3 2007 Free Software Foundation, Inc.
4 Ian Lance Taylor, Cygnus Support
5 Linker support added by Mark Mitchell, CodeSourcery, LLC.
6 <mark@codesourcery.com>
7
8 This file is part of BFD, the Binary File Descriptor library.
9
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
14
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
19
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
23
24 /* This file supports the 64-bit MIPS ELF ABI.
25
26 The MIPS 64-bit ELF ABI uses an unusual reloc format. This file
27 overrides the usual ELF reloc handling, and handles reading and
28 writing the relocations here. */
29
30 /* TODO: Many things are unsupported, even if there is some code for it
31 . (which was mostly stolen from elf32-mips.c and slightly adapted).
32 .
33 . - Relocation handling for REL relocs is wrong in many cases and
34 . generally untested.
35 . - Relocation handling for RELA relocs related to GOT support are
36 . also likely to be wrong.
37 . - Support for MIPS16 is untested.
38 . - Combined relocs with RSS_* entries are unsupported.
39 . - The whole GOT handling for NewABI is missing, some parts of
40 . the OldABI version is still lying around and should be removed.
41 */
42
43 #include "sysdep.h"
44 #include "bfd.h"
45 #include "libbfd.h"
46 #include "aout/ar.h"
47 #include "bfdlink.h"
48 #include "genlink.h"
49 #include "elf-bfd.h"
50 #include "elfxx-mips.h"
51 #include "elf/mips.h"
52
53 /* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to
54 use ECOFF. However, we support it anyhow for an easier changeover. */
55 #include "coff/sym.h"
56 #include "coff/symconst.h"
57 #include "coff/internal.h"
58 #include "coff/ecoff.h"
59 /* The 64 bit versions of the mdebug data structures are in alpha.h. */
60 #include "coff/alpha.h"
61 #define ECOFF_SIGNED_64
62 #include "ecoffswap.h"
63
64 static void mips_elf64_swap_reloc_in
65 (bfd *, const Elf64_Mips_External_Rel *, Elf64_Mips_Internal_Rela *);
66 static void mips_elf64_swap_reloca_in
67 (bfd *, const Elf64_Mips_External_Rela *, Elf64_Mips_Internal_Rela *);
68 static void mips_elf64_swap_reloc_out
69 (bfd *, const Elf64_Mips_Internal_Rela *, Elf64_Mips_External_Rel *);
70 static void mips_elf64_swap_reloca_out
71 (bfd *, const Elf64_Mips_Internal_Rela *, Elf64_Mips_External_Rela *);
72 static void mips_elf64_be_swap_reloc_in
73 (bfd *, const bfd_byte *, Elf_Internal_Rela *);
74 static void mips_elf64_be_swap_reloc_out
75 (bfd *, const Elf_Internal_Rela *, bfd_byte *);
76 static void mips_elf64_be_swap_reloca_in
77 (bfd *, const bfd_byte *, Elf_Internal_Rela *);
78 static void mips_elf64_be_swap_reloca_out
79 (bfd *, const Elf_Internal_Rela *, bfd_byte *);
80 static reloc_howto_type *bfd_elf64_bfd_reloc_type_lookup
81 (bfd *, bfd_reloc_code_real_type);
82 static reloc_howto_type *mips_elf64_rtype_to_howto
83 (unsigned int, bfd_boolean);
84 static void mips_elf64_info_to_howto_rel
85 (bfd *, arelent *, Elf_Internal_Rela *);
86 static void mips_elf64_info_to_howto_rela
87 (bfd *, arelent *, Elf_Internal_Rela *);
88 static long mips_elf64_get_reloc_upper_bound
89 (bfd *, asection *);
90 static long mips_elf64_canonicalize_reloc
91 (bfd *, asection *, arelent **, asymbol **);
92 static long mips_elf64_get_dynamic_reloc_upper_bound
93 (bfd *);
94 static long mips_elf64_canonicalize_dynamic_reloc
95 (bfd *, arelent **, asymbol **);
96 static bfd_boolean mips_elf64_slurp_one_reloc_table
97 (bfd *, asection *, Elf_Internal_Shdr *, bfd_size_type, arelent *,
98 asymbol **, bfd_boolean);
99 static bfd_boolean mips_elf64_slurp_reloc_table
100 (bfd *, asection *, asymbol **, bfd_boolean);
101 static void mips_elf64_write_relocs
102 (bfd *, asection *, void *);
103 static void mips_elf64_write_rel
104 (bfd *, asection *, Elf_Internal_Shdr *, int *, void *);
105 static void mips_elf64_write_rela
106 (bfd *, asection *, Elf_Internal_Shdr *, int *, void *);
107 static bfd_reloc_status_type mips_elf64_gprel16_reloc
108 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
109 static bfd_reloc_status_type mips_elf64_literal_reloc
110 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
111 static bfd_reloc_status_type mips_elf64_gprel32_reloc
112 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
113 static bfd_reloc_status_type mips_elf64_shift6_reloc
114 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
115 static bfd_reloc_status_type mips16_gprel_reloc
116 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
117 static bfd_boolean mips_elf64_assign_gp
118 (bfd *, bfd_vma *);
119 static bfd_reloc_status_type mips_elf64_final_gp
120 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
121 static bfd_boolean mips_elf64_object_p
122 (bfd *);
123 static irix_compat_t elf64_mips_irix_compat
124 (bfd *);
125 static bfd_boolean elf64_mips_grok_prstatus
126 (bfd *, Elf_Internal_Note *);
127 static bfd_boolean elf64_mips_grok_psinfo
128 (bfd *, Elf_Internal_Note *);
129
130 extern const bfd_target bfd_elf64_bigmips_vec;
131 extern const bfd_target bfd_elf64_littlemips_vec;
132
133 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
134 from smaller values. Start with zero, widen, *then* decrement. */
135 #define MINUS_ONE (((bfd_vma)0) - 1)
136
137 /* The number of local .got entries we reserve. */
138 #define MIPS_RESERVED_GOTNO (2)
139
140 /* The relocation table used for SHT_REL sections. */
141
142 static reloc_howto_type mips_elf64_howto_table_rel[] =
143 {
144 /* No relocation. */
145 HOWTO (R_MIPS_NONE, /* type */
146 0, /* rightshift */
147 0, /* size (0 = byte, 1 = short, 2 = long) */
148 0, /* bitsize */
149 FALSE, /* pc_relative */
150 0, /* bitpos */
151 complain_overflow_dont, /* complain_on_overflow */
152 _bfd_mips_elf_generic_reloc, /* special_function */
153 "R_MIPS_NONE", /* name */
154 FALSE, /* partial_inplace */
155 0, /* src_mask */
156 0, /* dst_mask */
157 FALSE), /* pcrel_offset */
158
159 /* 16 bit relocation. */
160 HOWTO (R_MIPS_16, /* type */
161 0, /* rightshift */
162 2, /* size (0 = byte, 1 = short, 2 = long) */
163 16, /* bitsize */
164 FALSE, /* pc_relative */
165 0, /* bitpos */
166 complain_overflow_signed, /* complain_on_overflow */
167 _bfd_mips_elf_generic_reloc, /* special_function */
168 "R_MIPS_16", /* name */
169 TRUE, /* partial_inplace */
170 0x0000ffff, /* src_mask */
171 0x0000ffff, /* dst_mask */
172 FALSE), /* pcrel_offset */
173
174 /* 32 bit relocation. */
175 HOWTO (R_MIPS_32, /* type */
176 0, /* rightshift */
177 2, /* size (0 = byte, 1 = short, 2 = long) */
178 32, /* bitsize */
179 FALSE, /* pc_relative */
180 0, /* bitpos */
181 complain_overflow_dont, /* complain_on_overflow */
182 _bfd_mips_elf_generic_reloc, /* special_function */
183 "R_MIPS_32", /* name */
184 TRUE, /* partial_inplace */
185 0xffffffff, /* src_mask */
186 0xffffffff, /* dst_mask */
187 FALSE), /* pcrel_offset */
188
189 /* 32 bit symbol relative relocation. */
190 HOWTO (R_MIPS_REL32, /* type */
191 0, /* rightshift */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
193 32, /* bitsize */
194 FALSE, /* pc_relative */
195 0, /* bitpos */
196 complain_overflow_dont, /* complain_on_overflow */
197 _bfd_mips_elf_generic_reloc, /* special_function */
198 "R_MIPS_REL32", /* name */
199 TRUE, /* partial_inplace */
200 0xffffffff, /* src_mask */
201 0xffffffff, /* dst_mask */
202 FALSE), /* pcrel_offset */
203
204 /* 26 bit jump address. */
205 HOWTO (R_MIPS_26, /* type */
206 2, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 26, /* bitsize */
209 FALSE, /* pc_relative */
210 0, /* bitpos */
211 complain_overflow_dont, /* complain_on_overflow */
212 /* This needs complex overflow
213 detection, because the upper 36
214 bits must match the PC + 4. */
215 _bfd_mips_elf_generic_reloc, /* special_function */
216 "R_MIPS_26", /* name */
217 TRUE, /* partial_inplace */
218 0x03ffffff, /* src_mask */
219 0x03ffffff, /* dst_mask */
220 FALSE), /* pcrel_offset */
221
222 /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
223 However, the native IRIX6 tools use them, so we try our best. */
224
225 /* High 16 bits of symbol value. */
226 HOWTO (R_MIPS_HI16, /* type */
227 16, /* rightshift */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
229 16, /* bitsize */
230 FALSE, /* pc_relative */
231 0, /* bitpos */
232 complain_overflow_dont, /* complain_on_overflow */
233 _bfd_mips_elf_hi16_reloc, /* special_function */
234 "R_MIPS_HI16", /* name */
235 TRUE, /* partial_inplace */
236 0x0000ffff, /* src_mask */
237 0x0000ffff, /* dst_mask */
238 FALSE), /* pcrel_offset */
239
240 /* Low 16 bits of symbol value. */
241 HOWTO (R_MIPS_LO16, /* type */
242 0, /* rightshift */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
244 16, /* bitsize */
245 FALSE, /* pc_relative */
246 0, /* bitpos */
247 complain_overflow_dont, /* complain_on_overflow */
248 _bfd_mips_elf_lo16_reloc, /* special_function */
249 "R_MIPS_LO16", /* name */
250 TRUE, /* partial_inplace */
251 0x0000ffff, /* src_mask */
252 0x0000ffff, /* dst_mask */
253 FALSE), /* pcrel_offset */
254
255 /* GP relative reference. */
256 HOWTO (R_MIPS_GPREL16, /* type */
257 0, /* rightshift */
258 2, /* size (0 = byte, 1 = short, 2 = long) */
259 16, /* bitsize */
260 FALSE, /* pc_relative */
261 0, /* bitpos */
262 complain_overflow_signed, /* complain_on_overflow */
263 mips_elf64_gprel16_reloc, /* special_function */
264 "R_MIPS_GPREL16", /* name */
265 TRUE, /* partial_inplace */
266 0x0000ffff, /* src_mask */
267 0x0000ffff, /* dst_mask */
268 FALSE), /* pcrel_offset */
269
270 /* Reference to literal section. */
271 HOWTO (R_MIPS_LITERAL, /* type */
272 0, /* rightshift */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
275 FALSE, /* pc_relative */
276 0, /* bitpos */
277 complain_overflow_signed, /* complain_on_overflow */
278 mips_elf64_literal_reloc, /* special_function */
279 "R_MIPS_LITERAL", /* name */
280 TRUE, /* partial_inplace */
281 0x0000ffff, /* src_mask */
282 0x0000ffff, /* dst_mask */
283 FALSE), /* pcrel_offset */
284
285 /* Reference to global offset table. */
286 HOWTO (R_MIPS_GOT16, /* type */
287 0, /* rightshift */
288 2, /* size (0 = byte, 1 = short, 2 = long) */
289 16, /* bitsize */
290 FALSE, /* pc_relative */
291 0, /* bitpos */
292 complain_overflow_signed, /* complain_on_overflow */
293 _bfd_mips_elf_got16_reloc, /* special_function */
294 "R_MIPS_GOT16", /* name */
295 TRUE, /* partial_inplace */
296 0x0000ffff, /* src_mask */
297 0x0000ffff, /* dst_mask */
298 FALSE), /* pcrel_offset */
299
300 /* 16 bit PC relative reference. Note that the ABI document has a typo
301 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
302 We do the right thing here. */
303 HOWTO (R_MIPS_PC16, /* type */
304 2, /* rightshift */
305 2, /* size (0 = byte, 1 = short, 2 = long) */
306 16, /* bitsize */
307 TRUE, /* pc_relative */
308 0, /* bitpos */
309 complain_overflow_signed, /* complain_on_overflow */
310 _bfd_mips_elf_generic_reloc, /* special_function */
311 "R_MIPS_PC16", /* name */
312 TRUE, /* partial_inplace */
313 0x0000ffff, /* src_mask */
314 0x0000ffff, /* dst_mask */
315 TRUE), /* pcrel_offset */
316
317 /* 16 bit call through global offset table. */
318 HOWTO (R_MIPS_CALL16, /* type */
319 0, /* rightshift */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
321 16, /* bitsize */
322 FALSE, /* pc_relative */
323 0, /* bitpos */
324 complain_overflow_signed, /* complain_on_overflow */
325 _bfd_mips_elf_generic_reloc, /* special_function */
326 "R_MIPS_CALL16", /* name */
327 TRUE, /* partial_inplace */
328 0x0000ffff, /* src_mask */
329 0x0000ffff, /* dst_mask */
330 FALSE), /* pcrel_offset */
331
332 /* 32 bit GP relative reference. */
333 HOWTO (R_MIPS_GPREL32, /* type */
334 0, /* rightshift */
335 2, /* size (0 = byte, 1 = short, 2 = long) */
336 32, /* bitsize */
337 FALSE, /* pc_relative */
338 0, /* bitpos */
339 complain_overflow_dont, /* complain_on_overflow */
340 mips_elf64_gprel32_reloc, /* special_function */
341 "R_MIPS_GPREL32", /* name */
342 TRUE, /* partial_inplace */
343 0xffffffff, /* src_mask */
344 0xffffffff, /* dst_mask */
345 FALSE), /* pcrel_offset */
346
347 EMPTY_HOWTO (13),
348 EMPTY_HOWTO (14),
349 EMPTY_HOWTO (15),
350
351 /* A 5 bit shift field. */
352 HOWTO (R_MIPS_SHIFT5, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 5, /* bitsize */
356 FALSE, /* pc_relative */
357 6, /* bitpos */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 _bfd_mips_elf_generic_reloc, /* special_function */
360 "R_MIPS_SHIFT5", /* name */
361 TRUE, /* partial_inplace */
362 0x000007c0, /* src_mask */
363 0x000007c0, /* dst_mask */
364 FALSE), /* pcrel_offset */
365
366 /* A 6 bit shift field. */
367 HOWTO (R_MIPS_SHIFT6, /* type */
368 0, /* rightshift */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
370 6, /* bitsize */
371 FALSE, /* pc_relative */
372 6, /* bitpos */
373 complain_overflow_bitfield, /* complain_on_overflow */
374 mips_elf64_shift6_reloc, /* special_function */
375 "R_MIPS_SHIFT6", /* name */
376 TRUE, /* partial_inplace */
377 0x000007c4, /* src_mask */
378 0x000007c4, /* dst_mask */
379 FALSE), /* pcrel_offset */
380
381 /* 64 bit relocation. */
382 HOWTO (R_MIPS_64, /* type */
383 0, /* rightshift */
384 4, /* size (0 = byte, 1 = short, 2 = long) */
385 64, /* bitsize */
386 FALSE, /* pc_relative */
387 0, /* bitpos */
388 complain_overflow_dont, /* complain_on_overflow */
389 _bfd_mips_elf_generic_reloc, /* special_function */
390 "R_MIPS_64", /* name */
391 TRUE, /* partial_inplace */
392 MINUS_ONE, /* src_mask */
393 MINUS_ONE, /* dst_mask */
394 FALSE), /* pcrel_offset */
395
396 /* Displacement in the global offset table. */
397 HOWTO (R_MIPS_GOT_DISP, /* type */
398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 16, /* bitsize */
401 FALSE, /* pc_relative */
402 0, /* bitpos */
403 complain_overflow_signed, /* complain_on_overflow */
404 _bfd_mips_elf_generic_reloc, /* special_function */
405 "R_MIPS_GOT_DISP", /* name */
406 TRUE, /* partial_inplace */
407 0x0000ffff, /* src_mask */
408 0x0000ffff, /* dst_mask */
409 FALSE), /* pcrel_offset */
410
411 /* Displacement to page pointer in the global offset table. */
412 HOWTO (R_MIPS_GOT_PAGE, /* type */
413 0, /* rightshift */
414 2, /* size (0 = byte, 1 = short, 2 = long) */
415 16, /* bitsize */
416 FALSE, /* pc_relative */
417 0, /* bitpos */
418 complain_overflow_signed, /* complain_on_overflow */
419 _bfd_mips_elf_generic_reloc, /* special_function */
420 "R_MIPS_GOT_PAGE", /* name */
421 TRUE, /* partial_inplace */
422 0x0000ffff, /* src_mask */
423 0x0000ffff, /* dst_mask */
424 FALSE), /* pcrel_offset */
425
426 /* Offset from page pointer in the global offset table. */
427 HOWTO (R_MIPS_GOT_OFST, /* type */
428 0, /* rightshift */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
430 16, /* bitsize */
431 FALSE, /* pc_relative */
432 0, /* bitpos */
433 complain_overflow_signed, /* complain_on_overflow */
434 _bfd_mips_elf_generic_reloc, /* special_function */
435 "R_MIPS_GOT_OFST", /* name */
436 TRUE, /* partial_inplace */
437 0x0000ffff, /* src_mask */
438 0x0000ffff, /* dst_mask */
439 FALSE), /* pcrel_offset */
440
441 /* High 16 bits of displacement in global offset table. */
442 HOWTO (R_MIPS_GOT_HI16, /* type */
443 0, /* rightshift */
444 2, /* size (0 = byte, 1 = short, 2 = long) */
445 16, /* bitsize */
446 FALSE, /* pc_relative */
447 0, /* bitpos */
448 complain_overflow_dont, /* complain_on_overflow */
449 _bfd_mips_elf_generic_reloc, /* special_function */
450 "R_MIPS_GOT_HI16", /* name */
451 TRUE, /* partial_inplace */
452 0x0000ffff, /* src_mask */
453 0x0000ffff, /* dst_mask */
454 FALSE), /* pcrel_offset */
455
456 /* Low 16 bits of displacement in global offset table. */
457 HOWTO (R_MIPS_GOT_LO16, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 _bfd_mips_elf_generic_reloc, /* special_function */
465 "R_MIPS_GOT_LO16", /* name */
466 TRUE, /* partial_inplace */
467 0x0000ffff, /* src_mask */
468 0x0000ffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 /* 64 bit subtraction. */
472 HOWTO (R_MIPS_SUB, /* type */
473 0, /* rightshift */
474 4, /* size (0 = byte, 1 = short, 2 = long) */
475 64, /* bitsize */
476 FALSE, /* pc_relative */
477 0, /* bitpos */
478 complain_overflow_dont, /* complain_on_overflow */
479 _bfd_mips_elf_generic_reloc, /* special_function */
480 "R_MIPS_SUB", /* name */
481 TRUE, /* partial_inplace */
482 MINUS_ONE, /* src_mask */
483 MINUS_ONE, /* dst_mask */
484 FALSE), /* pcrel_offset */
485
486 /* Insert the addend as an instruction. */
487 /* FIXME: Not handled correctly. */
488 HOWTO (R_MIPS_INSERT_A, /* type */
489 0, /* rightshift */
490 2, /* size (0 = byte, 1 = short, 2 = long) */
491 32, /* bitsize */
492 FALSE, /* pc_relative */
493 0, /* bitpos */
494 complain_overflow_dont, /* complain_on_overflow */
495 _bfd_mips_elf_generic_reloc, /* special_function */
496 "R_MIPS_INSERT_A", /* name */
497 TRUE, /* partial_inplace */
498 0xffffffff, /* src_mask */
499 0xffffffff, /* dst_mask */
500 FALSE), /* pcrel_offset */
501
502 /* Insert the addend as an instruction, and change all relocations
503 to refer to the old instruction at the address. */
504 /* FIXME: Not handled correctly. */
505 HOWTO (R_MIPS_INSERT_B, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_dont, /* complain_on_overflow */
512 _bfd_mips_elf_generic_reloc, /* special_function */
513 "R_MIPS_INSERT_B", /* name */
514 TRUE, /* partial_inplace */
515 0xffffffff, /* src_mask */
516 0xffffffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* Delete a 32 bit instruction. */
520 /* FIXME: Not handled correctly. */
521 HOWTO (R_MIPS_DELETE, /* type */
522 0, /* rightshift */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
524 32, /* bitsize */
525 FALSE, /* pc_relative */
526 0, /* bitpos */
527 complain_overflow_dont, /* complain_on_overflow */
528 _bfd_mips_elf_generic_reloc, /* special_function */
529 "R_MIPS_DELETE", /* name */
530 TRUE, /* partial_inplace */
531 0xffffffff, /* src_mask */
532 0xffffffff, /* dst_mask */
533 FALSE), /* pcrel_offset */
534
535 /* The MIPS ELF64 ABI Draft wants us to support these for REL relocations.
536 We don't, because
537 a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/
538 R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using
539 fallable heuristics.
540 b) No other NewABI toolchain actually emits such relocations. */
541 EMPTY_HOWTO (R_MIPS_HIGHER),
542 EMPTY_HOWTO (R_MIPS_HIGHEST),
543
544 /* High 16 bits of displacement in global offset table. */
545 HOWTO (R_MIPS_CALL_HI16, /* type */
546 0, /* rightshift */
547 2, /* size (0 = byte, 1 = short, 2 = long) */
548 16, /* bitsize */
549 FALSE, /* pc_relative */
550 0, /* bitpos */
551 complain_overflow_dont, /* complain_on_overflow */
552 _bfd_mips_elf_generic_reloc, /* special_function */
553 "R_MIPS_CALL_HI16", /* name */
554 TRUE, /* partial_inplace */
555 0x0000ffff, /* src_mask */
556 0x0000ffff, /* dst_mask */
557 FALSE), /* pcrel_offset */
558
559 /* Low 16 bits of displacement in global offset table. */
560 HOWTO (R_MIPS_CALL_LO16, /* type */
561 0, /* rightshift */
562 2, /* size (0 = byte, 1 = short, 2 = long) */
563 16, /* bitsize */
564 FALSE, /* pc_relative */
565 0, /* bitpos */
566 complain_overflow_dont, /* complain_on_overflow */
567 _bfd_mips_elf_generic_reloc, /* special_function */
568 "R_MIPS_CALL_LO16", /* name */
569 TRUE, /* partial_inplace */
570 0x0000ffff, /* src_mask */
571 0x0000ffff, /* dst_mask */
572 FALSE), /* pcrel_offset */
573
574 /* Section displacement, used by an associated event location section. */
575 HOWTO (R_MIPS_SCN_DISP, /* type */
576 0, /* rightshift */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
578 32, /* bitsize */
579 FALSE, /* pc_relative */
580 0, /* bitpos */
581 complain_overflow_dont, /* complain_on_overflow */
582 _bfd_mips_elf_generic_reloc, /* special_function */
583 "R_MIPS_SCN_DISP", /* name */
584 TRUE, /* partial_inplace */
585 0xffffffff, /* src_mask */
586 0xffffffff, /* dst_mask */
587 FALSE), /* pcrel_offset */
588
589 HOWTO (R_MIPS_REL16, /* type */
590 0, /* rightshift */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
592 16, /* bitsize */
593 FALSE, /* pc_relative */
594 0, /* bitpos */
595 complain_overflow_signed, /* complain_on_overflow */
596 _bfd_mips_elf_generic_reloc, /* special_function */
597 "R_MIPS_REL16", /* name */
598 TRUE, /* partial_inplace */
599 0xffff, /* src_mask */
600 0xffff, /* dst_mask */
601 FALSE), /* pcrel_offset */
602
603 /* These two are obsolete. */
604 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
605 EMPTY_HOWTO (R_MIPS_PJUMP),
606
607 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
608 It must be used for multigot GOT's (and only there). */
609 HOWTO (R_MIPS_RELGOT, /* type */
610 0, /* rightshift */
611 2, /* size (0 = byte, 1 = short, 2 = long) */
612 32, /* bitsize */
613 FALSE, /* pc_relative */
614 0, /* bitpos */
615 complain_overflow_dont, /* complain_on_overflow */
616 _bfd_mips_elf_generic_reloc, /* special_function */
617 "R_MIPS_RELGOT", /* name */
618 TRUE, /* partial_inplace */
619 0xffffffff, /* src_mask */
620 0xffffffff, /* dst_mask */
621 FALSE), /* pcrel_offset */
622
623 /* Protected jump conversion. This is an optimization hint. No
624 relocation is required for correctness. */
625 HOWTO (R_MIPS_JALR, /* type */
626 0, /* rightshift */
627 2, /* size (0 = byte, 1 = short, 2 = long) */
628 32, /* bitsize */
629 FALSE, /* pc_relative */
630 0, /* bitpos */
631 complain_overflow_dont, /* complain_on_overflow */
632 _bfd_mips_elf_generic_reloc, /* special_function */
633 "R_MIPS_JALR", /* name */
634 FALSE, /* partial_inplace */
635 0, /* src_mask */
636 0x00000000, /* dst_mask */
637 FALSE), /* pcrel_offset */
638
639 /* TLS relocations. */
640 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD32),
641 EMPTY_HOWTO (R_MIPS_TLS_DTPREL32),
642
643 HOWTO (R_MIPS_TLS_DTPMOD64, /* type */
644 0, /* rightshift */
645 4, /* size (0 = byte, 1 = short, 2 = long) */
646 64, /* bitsize */
647 FALSE, /* pc_relative */
648 0, /* bitpos */
649 complain_overflow_dont, /* complain_on_overflow */
650 _bfd_mips_elf_generic_reloc, /* special_function */
651 "R_MIPS_TLS_DTPMOD64", /* name */
652 TRUE, /* partial_inplace */
653 MINUS_ONE, /* src_mask */
654 MINUS_ONE, /* dst_mask */
655 FALSE), /* pcrel_offset */
656
657 HOWTO (R_MIPS_TLS_DTPREL64, /* type */
658 0, /* rightshift */
659 4, /* size (0 = byte, 1 = short, 2 = long) */
660 64, /* bitsize */
661 FALSE, /* pc_relative */
662 0, /* bitpos */
663 complain_overflow_dont, /* complain_on_overflow */
664 _bfd_mips_elf_generic_reloc, /* special_function */
665 "R_MIPS_TLS_DTPREL64", /* name */
666 TRUE, /* partial_inplace */
667 MINUS_ONE, /* src_mask */
668 MINUS_ONE, /* dst_mask */
669 FALSE), /* pcrel_offset */
670
671 /* TLS general dynamic variable reference. */
672 HOWTO (R_MIPS_TLS_GD, /* type */
673 0, /* rightshift */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
675 16, /* bitsize */
676 FALSE, /* pc_relative */
677 0, /* bitpos */
678 complain_overflow_signed, /* complain_on_overflow */
679 _bfd_mips_elf_generic_reloc, /* special_function */
680 "R_MIPS_TLS_GD", /* name */
681 TRUE, /* partial_inplace */
682 0x0000ffff, /* src_mask */
683 0x0000ffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
685
686 /* TLS local dynamic variable reference. */
687 HOWTO (R_MIPS_TLS_LDM, /* type */
688 0, /* rightshift */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
690 16, /* bitsize */
691 FALSE, /* pc_relative */
692 0, /* bitpos */
693 complain_overflow_signed, /* complain_on_overflow */
694 _bfd_mips_elf_generic_reloc, /* special_function */
695 "R_MIPS_TLS_LDM", /* name */
696 TRUE, /* partial_inplace */
697 0x0000ffff, /* src_mask */
698 0x0000ffff, /* dst_mask */
699 FALSE), /* pcrel_offset */
700
701 /* TLS local dynamic offset. */
702 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
703 0, /* rightshift */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
705 16, /* bitsize */
706 FALSE, /* pc_relative */
707 0, /* bitpos */
708 complain_overflow_signed, /* complain_on_overflow */
709 _bfd_mips_elf_generic_reloc, /* special_function */
710 "R_MIPS_TLS_DTPREL_HI16", /* name */
711 TRUE, /* partial_inplace */
712 0x0000ffff, /* src_mask */
713 0x0000ffff, /* dst_mask */
714 FALSE), /* pcrel_offset */
715
716 /* TLS local dynamic offset. */
717 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
718 0, /* rightshift */
719 2, /* size (0 = byte, 1 = short, 2 = long) */
720 16, /* bitsize */
721 FALSE, /* pc_relative */
722 0, /* bitpos */
723 complain_overflow_signed, /* complain_on_overflow */
724 _bfd_mips_elf_generic_reloc, /* special_function */
725 "R_MIPS_TLS_DTPREL_LO16", /* name */
726 TRUE, /* partial_inplace */
727 0x0000ffff, /* src_mask */
728 0x0000ffff, /* dst_mask */
729 FALSE), /* pcrel_offset */
730
731 /* TLS thread pointer offset. */
732 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
733 0, /* rightshift */
734 2, /* size (0 = byte, 1 = short, 2 = long) */
735 16, /* bitsize */
736 FALSE, /* pc_relative */
737 0, /* bitpos */
738 complain_overflow_signed, /* complain_on_overflow */
739 _bfd_mips_elf_generic_reloc, /* special_function */
740 "R_MIPS_TLS_GOTTPREL", /* name */
741 TRUE, /* partial_inplace */
742 0x0000ffff, /* src_mask */
743 0x0000ffff, /* dst_mask */
744 FALSE), /* pcrel_offset */
745
746 /* TLS IE dynamic relocations. */
747 EMPTY_HOWTO (R_MIPS_TLS_TPREL32),
748
749 HOWTO (R_MIPS_TLS_TPREL64, /* type */
750 0, /* rightshift */
751 4, /* size (0 = byte, 1 = short, 2 = long) */
752 64, /* bitsize */
753 FALSE, /* pc_relative */
754 0, /* bitpos */
755 complain_overflow_dont, /* complain_on_overflow */
756 _bfd_mips_elf_generic_reloc, /* special_function */
757 "R_MIPS_TLS_TPREL64", /* name */
758 TRUE, /* partial_inplace */
759 MINUS_ONE, /* src_mask */
760 MINUS_ONE, /* dst_mask */
761 FALSE), /* pcrel_offset */
762
763 /* TLS thread pointer offset. */
764 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
765 0, /* rightshift */
766 2, /* size (0 = byte, 1 = short, 2 = long) */
767 16, /* bitsize */
768 FALSE, /* pc_relative */
769 0, /* bitpos */
770 complain_overflow_signed, /* complain_on_overflow */
771 _bfd_mips_elf_generic_reloc, /* special_function */
772 "R_MIPS_TLS_TPREL_HI16", /* name */
773 TRUE, /* partial_inplace */
774 0x0000ffff, /* src_mask */
775 0x0000ffff, /* dst_mask */
776 FALSE), /* pcrel_offset */
777
778 /* TLS thread pointer offset. */
779 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
780 0, /* rightshift */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
782 16, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_signed, /* complain_on_overflow */
786 _bfd_mips_elf_generic_reloc, /* special_function */
787 "R_MIPS_TLS_TPREL_LO16", /* name */
788 TRUE, /* partial_inplace */
789 0x0000ffff, /* src_mask */
790 0x0000ffff, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
793 /* 32 bit relocation with no addend. */
794 HOWTO (R_MIPS_GLOB_DAT, /* type */
795 0, /* rightshift */
796 2, /* size (0 = byte, 1 = short, 2 = long) */
797 32, /* bitsize */
798 FALSE, /* pc_relative */
799 0, /* bitpos */
800 complain_overflow_dont, /* complain_on_overflow */
801 _bfd_mips_elf_generic_reloc, /* special_function */
802 "R_MIPS_GLOB_DAT", /* name */
803 FALSE, /* partial_inplace */
804 0x0, /* src_mask */
805 0xffffffff, /* dst_mask */
806 FALSE), /* pcrel_offset */
807 };
808
809 /* The relocation table used for SHT_RELA sections. */
810
811 static reloc_howto_type mips_elf64_howto_table_rela[] =
812 {
813 /* No relocation. */
814 HOWTO (R_MIPS_NONE, /* type */
815 0, /* rightshift */
816 0, /* size (0 = byte, 1 = short, 2 = long) */
817 0, /* bitsize */
818 FALSE, /* pc_relative */
819 0, /* bitpos */
820 complain_overflow_dont, /* complain_on_overflow */
821 _bfd_mips_elf_generic_reloc, /* special_function */
822 "R_MIPS_NONE", /* name */
823 FALSE, /* partial_inplace */
824 0, /* src_mask */
825 0, /* dst_mask */
826 FALSE), /* pcrel_offset */
827
828 /* 16 bit relocation. */
829 HOWTO (R_MIPS_16, /* type */
830 0, /* rightshift */
831 2, /* size (0 = byte, 1 = short, 2 = long) */
832 16, /* bitsize */
833 FALSE, /* pc_relative */
834 0, /* bitpos */
835 complain_overflow_signed, /* complain_on_overflow */
836 _bfd_mips_elf_generic_reloc, /* special_function */
837 "R_MIPS_16", /* name */
838 FALSE, /* partial_inplace */
839 0, /* src_mask */
840 0x0000ffff, /* dst_mask */
841 FALSE), /* pcrel_offset */
842
843 /* 32 bit relocation. */
844 HOWTO (R_MIPS_32, /* type */
845 0, /* rightshift */
846 2, /* size (0 = byte, 1 = short, 2 = long) */
847 32, /* bitsize */
848 FALSE, /* pc_relative */
849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
851 _bfd_mips_elf_generic_reloc, /* special_function */
852 "R_MIPS_32", /* name */
853 FALSE, /* partial_inplace */
854 0, /* src_mask */
855 0xffffffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
857
858 /* 32 bit symbol relative relocation. */
859 HOWTO (R_MIPS_REL32, /* type */
860 0, /* rightshift */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
862 32, /* bitsize */
863 FALSE, /* pc_relative */
864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 _bfd_mips_elf_generic_reloc, /* special_function */
867 "R_MIPS_REL32", /* name */
868 FALSE, /* partial_inplace */
869 0, /* src_mask */
870 0xffffffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
872
873 /* 26 bit jump address. */
874 HOWTO (R_MIPS_26, /* type */
875 2, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 26, /* bitsize */
878 FALSE, /* pc_relative */
879 0, /* bitpos */
880 complain_overflow_dont, /* complain_on_overflow */
881 /* This needs complex overflow
882 detection, because the upper 36
883 bits must match the PC + 4. */
884 _bfd_mips_elf_generic_reloc, /* special_function */
885 "R_MIPS_26", /* name */
886 FALSE, /* partial_inplace */
887 0, /* src_mask */
888 0x03ffffff, /* dst_mask */
889 FALSE), /* pcrel_offset */
890
891 /* High 16 bits of symbol value. */
892 HOWTO (R_MIPS_HI16, /* type */
893 0, /* rightshift */
894 2, /* size (0 = byte, 1 = short, 2 = long) */
895 16, /* bitsize */
896 FALSE, /* pc_relative */
897 0, /* bitpos */
898 complain_overflow_dont, /* complain_on_overflow */
899 _bfd_mips_elf_generic_reloc, /* special_function */
900 "R_MIPS_HI16", /* name */
901 FALSE, /* partial_inplace */
902 0, /* src_mask */
903 0x0000ffff, /* dst_mask */
904 FALSE), /* pcrel_offset */
905
906 /* Low 16 bits of symbol value. */
907 HOWTO (R_MIPS_LO16, /* type */
908 0, /* rightshift */
909 2, /* size (0 = byte, 1 = short, 2 = long) */
910 16, /* bitsize */
911 FALSE, /* pc_relative */
912 0, /* bitpos */
913 complain_overflow_dont, /* complain_on_overflow */
914 _bfd_mips_elf_generic_reloc, /* special_function */
915 "R_MIPS_LO16", /* name */
916 FALSE, /* partial_inplace */
917 0, /* src_mask */
918 0x0000ffff, /* dst_mask */
919 FALSE), /* pcrel_offset */
920
921 /* GP relative reference. */
922 HOWTO (R_MIPS_GPREL16, /* type */
923 0, /* rightshift */
924 2, /* size (0 = byte, 1 = short, 2 = long) */
925 16, /* bitsize */
926 FALSE, /* pc_relative */
927 0, /* bitpos */
928 complain_overflow_signed, /* complain_on_overflow */
929 mips_elf64_gprel16_reloc, /* special_function */
930 "R_MIPS_GPREL16", /* name */
931 FALSE, /* partial_inplace */
932 0, /* src_mask */
933 0x0000ffff, /* dst_mask */
934 FALSE), /* pcrel_offset */
935
936 /* Reference to literal section. */
937 HOWTO (R_MIPS_LITERAL, /* type */
938 0, /* rightshift */
939 2, /* size (0 = byte, 1 = short, 2 = long) */
940 16, /* bitsize */
941 FALSE, /* pc_relative */
942 0, /* bitpos */
943 complain_overflow_signed, /* complain_on_overflow */
944 mips_elf64_literal_reloc, /* special_function */
945 "R_MIPS_LITERAL", /* name */
946 FALSE, /* partial_inplace */
947 0, /* src_mask */
948 0x0000ffff, /* dst_mask */
949 FALSE), /* pcrel_offset */
950
951 /* Reference to global offset table. */
952 HOWTO (R_MIPS_GOT16, /* type */
953 0, /* rightshift */
954 2, /* size (0 = byte, 1 = short, 2 = long) */
955 16, /* bitsize */
956 FALSE, /* pc_relative */
957 0, /* bitpos */
958 complain_overflow_signed, /* complain_on_overflow */
959 _bfd_mips_elf_generic_reloc, /* special_function */
960 "R_MIPS_GOT16", /* name */
961 FALSE, /* partial_inplace */
962 0, /* src_mask */
963 0x0000ffff, /* dst_mask */
964 FALSE), /* pcrel_offset */
965
966 /* 16 bit PC relative reference. Note that the ABI document has a typo
967 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
968 We do the right thing here. */
969 HOWTO (R_MIPS_PC16, /* type */
970 2, /* rightshift */
971 2, /* size (0 = byte, 1 = short, 2 = long) */
972 16, /* bitsize */
973 TRUE, /* pc_relative */
974 0, /* bitpos */
975 complain_overflow_signed, /* complain_on_overflow */
976 _bfd_mips_elf_generic_reloc, /* special_function */
977 "R_MIPS_PC16", /* name */
978 FALSE, /* partial_inplace */
979 0, /* src_mask */
980 0x0000ffff, /* dst_mask */
981 TRUE), /* pcrel_offset */
982
983 /* 16 bit call through global offset table. */
984 HOWTO (R_MIPS_CALL16, /* type */
985 0, /* rightshift */
986 2, /* size (0 = byte, 1 = short, 2 = long) */
987 16, /* bitsize */
988 FALSE, /* pc_relative */
989 0, /* bitpos */
990 complain_overflow_signed, /* complain_on_overflow */
991 _bfd_mips_elf_generic_reloc, /* special_function */
992 "R_MIPS_CALL16", /* name */
993 FALSE, /* partial_inplace */
994 0, /* src_mask */
995 0x0000ffff, /* dst_mask */
996 FALSE), /* pcrel_offset */
997
998 /* 32 bit GP relative reference. */
999 HOWTO (R_MIPS_GPREL32, /* type */
1000 0, /* rightshift */
1001 2, /* size (0 = byte, 1 = short, 2 = long) */
1002 32, /* bitsize */
1003 FALSE, /* pc_relative */
1004 0, /* bitpos */
1005 complain_overflow_dont, /* complain_on_overflow */
1006 mips_elf64_gprel32_reloc, /* special_function */
1007 "R_MIPS_GPREL32", /* name */
1008 FALSE, /* partial_inplace */
1009 0, /* src_mask */
1010 0xffffffff, /* dst_mask */
1011 FALSE), /* pcrel_offset */
1012
1013 EMPTY_HOWTO (13),
1014 EMPTY_HOWTO (14),
1015 EMPTY_HOWTO (15),
1016
1017 /* A 5 bit shift field. */
1018 HOWTO (R_MIPS_SHIFT5, /* type */
1019 0, /* rightshift */
1020 2, /* size (0 = byte, 1 = short, 2 = long) */
1021 5, /* bitsize */
1022 FALSE, /* pc_relative */
1023 6, /* bitpos */
1024 complain_overflow_bitfield, /* complain_on_overflow */
1025 _bfd_mips_elf_generic_reloc, /* special_function */
1026 "R_MIPS_SHIFT5", /* name */
1027 FALSE, /* partial_inplace */
1028 0, /* src_mask */
1029 0x000007c0, /* dst_mask */
1030 FALSE), /* pcrel_offset */
1031
1032 /* A 6 bit shift field. */
1033 HOWTO (R_MIPS_SHIFT6, /* type */
1034 0, /* rightshift */
1035 2, /* size (0 = byte, 1 = short, 2 = long) */
1036 6, /* bitsize */
1037 FALSE, /* pc_relative */
1038 6, /* bitpos */
1039 complain_overflow_bitfield, /* complain_on_overflow */
1040 mips_elf64_shift6_reloc, /* special_function */
1041 "R_MIPS_SHIFT6", /* name */
1042 FALSE, /* partial_inplace */
1043 0, /* src_mask */
1044 0x000007c4, /* dst_mask */
1045 FALSE), /* pcrel_offset */
1046
1047 /* 64 bit relocation. */
1048 HOWTO (R_MIPS_64, /* type */
1049 0, /* rightshift */
1050 4, /* size (0 = byte, 1 = short, 2 = long) */
1051 64, /* bitsize */
1052 FALSE, /* pc_relative */
1053 0, /* bitpos */
1054 complain_overflow_dont, /* complain_on_overflow */
1055 _bfd_mips_elf_generic_reloc, /* special_function */
1056 "R_MIPS_64", /* name */
1057 FALSE, /* partial_inplace */
1058 0, /* src_mask */
1059 MINUS_ONE, /* dst_mask */
1060 FALSE), /* pcrel_offset */
1061
1062 /* Displacement in the global offset table. */
1063 HOWTO (R_MIPS_GOT_DISP, /* type */
1064 0, /* rightshift */
1065 2, /* size (0 = byte, 1 = short, 2 = long) */
1066 16, /* bitsize */
1067 FALSE, /* pc_relative */
1068 0, /* bitpos */
1069 complain_overflow_signed, /* complain_on_overflow */
1070 _bfd_mips_elf_generic_reloc, /* special_function */
1071 "R_MIPS_GOT_DISP", /* name */
1072 FALSE, /* partial_inplace */
1073 0, /* src_mask */
1074 0x0000ffff, /* dst_mask */
1075 FALSE), /* pcrel_offset */
1076
1077 /* Displacement to page pointer in the global offset table. */
1078 HOWTO (R_MIPS_GOT_PAGE, /* type */
1079 0, /* rightshift */
1080 2, /* size (0 = byte, 1 = short, 2 = long) */
1081 16, /* bitsize */
1082 FALSE, /* pc_relative */
1083 0, /* bitpos */
1084 complain_overflow_signed, /* complain_on_overflow */
1085 _bfd_mips_elf_generic_reloc, /* special_function */
1086 "R_MIPS_GOT_PAGE", /* name */
1087 FALSE, /* partial_inplace */
1088 0, /* src_mask */
1089 0x0000ffff, /* dst_mask */
1090 FALSE), /* pcrel_offset */
1091
1092 /* Offset from page pointer in the global offset table. */
1093 HOWTO (R_MIPS_GOT_OFST, /* type */
1094 0, /* rightshift */
1095 2, /* size (0 = byte, 1 = short, 2 = long) */
1096 16, /* bitsize */
1097 FALSE, /* pc_relative */
1098 0, /* bitpos */
1099 complain_overflow_signed, /* complain_on_overflow */
1100 _bfd_mips_elf_generic_reloc, /* special_function */
1101 "R_MIPS_GOT_OFST", /* name */
1102 FALSE, /* partial_inplace */
1103 0, /* src_mask */
1104 0x0000ffff, /* dst_mask */
1105 FALSE), /* pcrel_offset */
1106
1107 /* High 16 bits of displacement in global offset table. */
1108 HOWTO (R_MIPS_GOT_HI16, /* type */
1109 0, /* rightshift */
1110 2, /* size (0 = byte, 1 = short, 2 = long) */
1111 16, /* bitsize */
1112 FALSE, /* pc_relative */
1113 0, /* bitpos */
1114 complain_overflow_dont, /* complain_on_overflow */
1115 _bfd_mips_elf_generic_reloc, /* special_function */
1116 "R_MIPS_GOT_HI16", /* name */
1117 FALSE, /* partial_inplace */
1118 0, /* src_mask */
1119 0x0000ffff, /* dst_mask */
1120 FALSE), /* pcrel_offset */
1121
1122 /* Low 16 bits of displacement in global offset table. */
1123 HOWTO (R_MIPS_GOT_LO16, /* type */
1124 0, /* rightshift */
1125 2, /* size (0 = byte, 1 = short, 2 = long) */
1126 16, /* bitsize */
1127 FALSE, /* pc_relative */
1128 0, /* bitpos */
1129 complain_overflow_dont, /* complain_on_overflow */
1130 _bfd_mips_elf_generic_reloc, /* special_function */
1131 "R_MIPS_GOT_LO16", /* name */
1132 FALSE, /* partial_inplace */
1133 0, /* src_mask */
1134 0x0000ffff, /* dst_mask */
1135 FALSE), /* pcrel_offset */
1136
1137 /* 64 bit subtraction. */
1138 HOWTO (R_MIPS_SUB, /* type */
1139 0, /* rightshift */
1140 4, /* size (0 = byte, 1 = short, 2 = long) */
1141 64, /* bitsize */
1142 FALSE, /* pc_relative */
1143 0, /* bitpos */
1144 complain_overflow_dont, /* complain_on_overflow */
1145 _bfd_mips_elf_generic_reloc, /* special_function */
1146 "R_MIPS_SUB", /* name */
1147 FALSE, /* partial_inplace */
1148 0, /* src_mask */
1149 MINUS_ONE, /* dst_mask */
1150 FALSE), /* pcrel_offset */
1151
1152 /* Insert the addend as an instruction. */
1153 /* FIXME: Not handled correctly. */
1154 HOWTO (R_MIPS_INSERT_A, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 32, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 _bfd_mips_elf_generic_reloc, /* special_function */
1162 "R_MIPS_INSERT_A", /* name */
1163 FALSE, /* partial_inplace */
1164 0, /* src_mask */
1165 0xffffffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167
1168 /* Insert the addend as an instruction, and change all relocations
1169 to refer to the old instruction at the address. */
1170 /* FIXME: Not handled correctly. */
1171 HOWTO (R_MIPS_INSERT_B, /* type */
1172 0, /* rightshift */
1173 2, /* size (0 = byte, 1 = short, 2 = long) */
1174 32, /* bitsize */
1175 FALSE, /* pc_relative */
1176 0, /* bitpos */
1177 complain_overflow_dont, /* complain_on_overflow */
1178 _bfd_mips_elf_generic_reloc, /* special_function */
1179 "R_MIPS_INSERT_B", /* name */
1180 FALSE, /* partial_inplace */
1181 0, /* src_mask */
1182 0xffffffff, /* dst_mask */
1183 FALSE), /* pcrel_offset */
1184
1185 /* Delete a 32 bit instruction. */
1186 /* FIXME: Not handled correctly. */
1187 HOWTO (R_MIPS_DELETE, /* type */
1188 0, /* rightshift */
1189 2, /* size (0 = byte, 1 = short, 2 = long) */
1190 32, /* bitsize */
1191 FALSE, /* pc_relative */
1192 0, /* bitpos */
1193 complain_overflow_dont, /* complain_on_overflow */
1194 _bfd_mips_elf_generic_reloc, /* special_function */
1195 "R_MIPS_DELETE", /* name */
1196 FALSE, /* partial_inplace */
1197 0, /* src_mask */
1198 0xffffffff, /* dst_mask */
1199 FALSE), /* pcrel_offset */
1200
1201 /* Get the higher value of a 64 bit addend. */
1202 HOWTO (R_MIPS_HIGHER, /* type */
1203 0, /* rightshift */
1204 2, /* size (0 = byte, 1 = short, 2 = long) */
1205 16, /* bitsize */
1206 FALSE, /* pc_relative */
1207 0, /* bitpos */
1208 complain_overflow_dont, /* complain_on_overflow */
1209 _bfd_mips_elf_generic_reloc, /* special_function */
1210 "R_MIPS_HIGHER", /* name */
1211 FALSE, /* partial_inplace */
1212 0, /* src_mask */
1213 0x0000ffff, /* dst_mask */
1214 FALSE), /* pcrel_offset */
1215
1216 /* Get the highest value of a 64 bit addend. */
1217 HOWTO (R_MIPS_HIGHEST, /* type */
1218 0, /* rightshift */
1219 2, /* size (0 = byte, 1 = short, 2 = long) */
1220 16, /* bitsize */
1221 FALSE, /* pc_relative */
1222 0, /* bitpos */
1223 complain_overflow_dont, /* complain_on_overflow */
1224 _bfd_mips_elf_generic_reloc, /* special_function */
1225 "R_MIPS_HIGHEST", /* name */
1226 FALSE, /* partial_inplace */
1227 0, /* src_mask */
1228 0x0000ffff, /* dst_mask */
1229 FALSE), /* pcrel_offset */
1230
1231 /* High 16 bits of displacement in global offset table. */
1232 HOWTO (R_MIPS_CALL_HI16, /* type */
1233 0, /* rightshift */
1234 2, /* size (0 = byte, 1 = short, 2 = long) */
1235 16, /* bitsize */
1236 FALSE, /* pc_relative */
1237 0, /* bitpos */
1238 complain_overflow_dont, /* complain_on_overflow */
1239 _bfd_mips_elf_generic_reloc, /* special_function */
1240 "R_MIPS_CALL_HI16", /* name */
1241 FALSE, /* partial_inplace */
1242 0, /* src_mask */
1243 0x0000ffff, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1245
1246 /* Low 16 bits of displacement in global offset table. */
1247 HOWTO (R_MIPS_CALL_LO16, /* type */
1248 0, /* rightshift */
1249 2, /* size (0 = byte, 1 = short, 2 = long) */
1250 16, /* bitsize */
1251 FALSE, /* pc_relative */
1252 0, /* bitpos */
1253 complain_overflow_dont, /* complain_on_overflow */
1254 _bfd_mips_elf_generic_reloc, /* special_function */
1255 "R_MIPS_CALL_LO16", /* name */
1256 FALSE, /* partial_inplace */
1257 0, /* src_mask */
1258 0x0000ffff, /* dst_mask */
1259 FALSE), /* pcrel_offset */
1260
1261 /* Section displacement, used by an associated event location section. */
1262 HOWTO (R_MIPS_SCN_DISP, /* type */
1263 0, /* rightshift */
1264 2, /* size (0 = byte, 1 = short, 2 = long) */
1265 32, /* bitsize */
1266 FALSE, /* pc_relative */
1267 0, /* bitpos */
1268 complain_overflow_dont, /* complain_on_overflow */
1269 _bfd_mips_elf_generic_reloc, /* special_function */
1270 "R_MIPS_SCN_DISP", /* name */
1271 FALSE, /* partial_inplace */
1272 0, /* src_mask */
1273 0xffffffff, /* dst_mask */
1274 FALSE), /* pcrel_offset */
1275
1276 HOWTO (R_MIPS_REL16, /* type */
1277 0, /* rightshift */
1278 1, /* size (0 = byte, 1 = short, 2 = long) */
1279 16, /* bitsize */
1280 FALSE, /* pc_relative */
1281 0, /* bitpos */
1282 complain_overflow_signed, /* complain_on_overflow */
1283 _bfd_mips_elf_generic_reloc, /* special_function */
1284 "R_MIPS_REL16", /* name */
1285 FALSE, /* partial_inplace */
1286 0, /* src_mask */
1287 0xffff, /* dst_mask */
1288 FALSE), /* pcrel_offset */
1289
1290 /* These two are obsolete. */
1291 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
1292 EMPTY_HOWTO (R_MIPS_PJUMP),
1293
1294 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
1295 It must be used for multigot GOT's (and only there). */
1296 HOWTO (R_MIPS_RELGOT, /* type */
1297 0, /* rightshift */
1298 2, /* size (0 = byte, 1 = short, 2 = long) */
1299 32, /* bitsize */
1300 FALSE, /* pc_relative */
1301 0, /* bitpos */
1302 complain_overflow_dont, /* complain_on_overflow */
1303 _bfd_mips_elf_generic_reloc, /* special_function */
1304 "R_MIPS_RELGOT", /* name */
1305 FALSE, /* partial_inplace */
1306 0, /* src_mask */
1307 0xffffffff, /* dst_mask */
1308 FALSE), /* pcrel_offset */
1309
1310 /* Protected jump conversion. This is an optimization hint. No
1311 relocation is required for correctness. */
1312 HOWTO (R_MIPS_JALR, /* type */
1313 0, /* rightshift */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 32, /* bitsize */
1316 FALSE, /* pc_relative */
1317 0, /* bitpos */
1318 complain_overflow_dont, /* complain_on_overflow */
1319 _bfd_mips_elf_generic_reloc, /* special_function */
1320 "R_MIPS_JALR", /* name */
1321 FALSE, /* partial_inplace */
1322 0, /* src_mask */
1323 0x00000000, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1325
1326 /* TLS relocations. */
1327 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD32),
1328 EMPTY_HOWTO (R_MIPS_TLS_DTPREL32),
1329 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
1330
1331 HOWTO (R_MIPS_TLS_DTPREL64, /* type */
1332 0, /* rightshift */
1333 4, /* size (0 = byte, 1 = short, 2 = long) */
1334 64, /* bitsize */
1335 FALSE, /* pc_relative */
1336 0, /* bitpos */
1337 complain_overflow_dont, /* complain_on_overflow */
1338 _bfd_mips_elf_generic_reloc, /* special_function */
1339 "R_MIPS_TLS_DTPREL64", /* name */
1340 TRUE, /* partial_inplace */
1341 MINUS_ONE, /* src_mask */
1342 MINUS_ONE, /* dst_mask */
1343 FALSE), /* pcrel_offset */
1344
1345 /* TLS general dynamic variable reference. */
1346 HOWTO (R_MIPS_TLS_GD, /* type */
1347 0, /* rightshift */
1348 2, /* size (0 = byte, 1 = short, 2 = long) */
1349 16, /* bitsize */
1350 FALSE, /* pc_relative */
1351 0, /* bitpos */
1352 complain_overflow_signed, /* complain_on_overflow */
1353 _bfd_mips_elf_generic_reloc, /* special_function */
1354 "R_MIPS_TLS_GD", /* name */
1355 TRUE, /* partial_inplace */
1356 0x0000ffff, /* src_mask */
1357 0x0000ffff, /* dst_mask */
1358 FALSE), /* pcrel_offset */
1359
1360 /* TLS local dynamic variable reference. */
1361 HOWTO (R_MIPS_TLS_LDM, /* type */
1362 0, /* rightshift */
1363 2, /* size (0 = byte, 1 = short, 2 = long) */
1364 16, /* bitsize */
1365 FALSE, /* pc_relative */
1366 0, /* bitpos */
1367 complain_overflow_signed, /* complain_on_overflow */
1368 _bfd_mips_elf_generic_reloc, /* special_function */
1369 "R_MIPS_TLS_LDM", /* name */
1370 TRUE, /* partial_inplace */
1371 0x0000ffff, /* src_mask */
1372 0x0000ffff, /* dst_mask */
1373 FALSE), /* pcrel_offset */
1374
1375 /* TLS local dynamic offset. */
1376 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
1377 0, /* rightshift */
1378 2, /* size (0 = byte, 1 = short, 2 = long) */
1379 16, /* bitsize */
1380 FALSE, /* pc_relative */
1381 0, /* bitpos */
1382 complain_overflow_signed, /* complain_on_overflow */
1383 _bfd_mips_elf_generic_reloc, /* special_function */
1384 "R_MIPS_TLS_DTPREL_HI16", /* name */
1385 TRUE, /* partial_inplace */
1386 0x0000ffff, /* src_mask */
1387 0x0000ffff, /* dst_mask */
1388 FALSE), /* pcrel_offset */
1389
1390 /* TLS local dynamic offset. */
1391 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
1392 0, /* rightshift */
1393 2, /* size (0 = byte, 1 = short, 2 = long) */
1394 16, /* bitsize */
1395 FALSE, /* pc_relative */
1396 0, /* bitpos */
1397 complain_overflow_signed, /* complain_on_overflow */
1398 _bfd_mips_elf_generic_reloc, /* special_function */
1399 "R_MIPS_TLS_DTPREL_LO16", /* name */
1400 TRUE, /* partial_inplace */
1401 0x0000ffff, /* src_mask */
1402 0x0000ffff, /* dst_mask */
1403 FALSE), /* pcrel_offset */
1404
1405 /* TLS thread pointer offset. */
1406 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
1407 0, /* rightshift */
1408 2, /* size (0 = byte, 1 = short, 2 = long) */
1409 16, /* bitsize */
1410 FALSE, /* pc_relative */
1411 0, /* bitpos */
1412 complain_overflow_signed, /* complain_on_overflow */
1413 _bfd_mips_elf_generic_reloc, /* special_function */
1414 "R_MIPS_TLS_GOTTPREL", /* name */
1415 TRUE, /* partial_inplace */
1416 0x0000ffff, /* src_mask */
1417 0x0000ffff, /* dst_mask */
1418 FALSE), /* pcrel_offset */
1419
1420 EMPTY_HOWTO (R_MIPS_TLS_TPREL32),
1421 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
1422
1423 /* TLS thread pointer offset. */
1424 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
1425 0, /* rightshift */
1426 2, /* size (0 = byte, 1 = short, 2 = long) */
1427 16, /* bitsize */
1428 FALSE, /* pc_relative */
1429 0, /* bitpos */
1430 complain_overflow_signed, /* complain_on_overflow */
1431 _bfd_mips_elf_generic_reloc, /* special_function */
1432 "R_MIPS_TLS_TPREL_HI16", /* name */
1433 TRUE, /* partial_inplace */
1434 0x0000ffff, /* src_mask */
1435 0x0000ffff, /* dst_mask */
1436 FALSE), /* pcrel_offset */
1437
1438 /* TLS thread pointer offset. */
1439 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
1440 0, /* rightshift */
1441 2, /* size (0 = byte, 1 = short, 2 = long) */
1442 16, /* bitsize */
1443 FALSE, /* pc_relative */
1444 0, /* bitpos */
1445 complain_overflow_signed, /* complain_on_overflow */
1446 _bfd_mips_elf_generic_reloc, /* special_function */
1447 "R_MIPS_TLS_TPREL_LO16", /* name */
1448 TRUE, /* partial_inplace */
1449 0x0000ffff, /* src_mask */
1450 0x0000ffff, /* dst_mask */
1451 FALSE), /* pcrel_offset */
1452
1453 /* 32 bit relocation with no addend. */
1454 HOWTO (R_MIPS_GLOB_DAT, /* type */
1455 0, /* rightshift */
1456 2, /* size (0 = byte, 1 = short, 2 = long) */
1457 32, /* bitsize */
1458 FALSE, /* pc_relative */
1459 0, /* bitpos */
1460 complain_overflow_dont, /* complain_on_overflow */
1461 _bfd_mips_elf_generic_reloc, /* special_function */
1462 "R_MIPS_GLOB_DAT", /* name */
1463 FALSE, /* partial_inplace */
1464 0x0, /* src_mask */
1465 0xffffffff, /* dst_mask */
1466 FALSE), /* pcrel_offset */
1467 };
1468
1469 static reloc_howto_type mips16_elf64_howto_table_rel[] =
1470 {
1471 /* The reloc used for the mips16 jump instruction. */
1472 HOWTO (R_MIPS16_26, /* type */
1473 2, /* rightshift */
1474 2, /* size (0 = byte, 1 = short, 2 = long) */
1475 26, /* bitsize */
1476 FALSE, /* pc_relative */
1477 0, /* bitpos */
1478 complain_overflow_dont, /* complain_on_overflow */
1479 /* This needs complex overflow
1480 detection, because the upper four
1481 bits must match the PC. */
1482 _bfd_mips_elf_generic_reloc, /* special_function */
1483 "R_MIPS16_26", /* name */
1484 TRUE, /* partial_inplace */
1485 0x3ffffff, /* src_mask */
1486 0x3ffffff, /* dst_mask */
1487 FALSE), /* pcrel_offset */
1488
1489 /* The reloc used for the mips16 gprel instruction. */
1490 HOWTO (R_MIPS16_GPREL, /* type */
1491 0, /* rightshift */
1492 2, /* size (0 = byte, 1 = short, 2 = long) */
1493 16, /* bitsize */
1494 FALSE, /* pc_relative */
1495 0, /* bitpos */
1496 complain_overflow_signed, /* complain_on_overflow */
1497 mips16_gprel_reloc, /* special_function */
1498 "R_MIPS16_GPREL", /* name */
1499 TRUE, /* partial_inplace */
1500 0x0000ffff, /* src_mask */
1501 0x0000ffff, /* dst_mask */
1502 FALSE), /* pcrel_offset */
1503
1504 /* A placeholder for MIPS16 reference to global offset table. */
1505 EMPTY_HOWTO (R_MIPS16_GOT16),
1506
1507 /* A placeholder for MIPS16 16 bit call through global offset table. */
1508 EMPTY_HOWTO (R_MIPS16_CALL16),
1509
1510 /* MIPS16 high 16 bits of symbol value. */
1511 HOWTO (R_MIPS16_HI16, /* type */
1512 16, /* rightshift */
1513 2, /* size (0 = byte, 1 = short, 2 = long) */
1514 16, /* bitsize */
1515 FALSE, /* pc_relative */
1516 0, /* bitpos */
1517 complain_overflow_dont, /* complain_on_overflow */
1518 _bfd_mips_elf_hi16_reloc, /* special_function */
1519 "R_MIPS16_HI16", /* name */
1520 TRUE, /* partial_inplace */
1521 0x0000ffff, /* src_mask */
1522 0x0000ffff, /* dst_mask */
1523 FALSE), /* pcrel_offset */
1524
1525 /* MIPS16 low 16 bits of symbol value. */
1526 HOWTO (R_MIPS16_LO16, /* type */
1527 0, /* rightshift */
1528 2, /* size (0 = byte, 1 = short, 2 = long) */
1529 16, /* bitsize */
1530 FALSE, /* pc_relative */
1531 0, /* bitpos */
1532 complain_overflow_dont, /* complain_on_overflow */
1533 _bfd_mips_elf_lo16_reloc, /* special_function */
1534 "R_MIPS16_LO16", /* name */
1535 TRUE, /* partial_inplace */
1536 0x0000ffff, /* src_mask */
1537 0x0000ffff, /* dst_mask */
1538 FALSE), /* pcrel_offset */
1539 };
1540
1541 static reloc_howto_type mips16_elf64_howto_table_rela[] =
1542 {
1543 /* The reloc used for the mips16 jump instruction. */
1544 HOWTO (R_MIPS16_26, /* type */
1545 2, /* rightshift */
1546 2, /* size (0 = byte, 1 = short, 2 = long) */
1547 26, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 /* This needs complex overflow
1552 detection, because the upper four
1553 bits must match the PC. */
1554 _bfd_mips_elf_generic_reloc, /* special_function */
1555 "R_MIPS16_26", /* name */
1556 FALSE, /* partial_inplace */
1557 0x3ffffff, /* src_mask */
1558 0x3ffffff, /* dst_mask */
1559 FALSE), /* pcrel_offset */
1560
1561 /* The reloc used for the mips16 gprel instruction. */
1562 HOWTO (R_MIPS16_GPREL, /* type */
1563 0, /* rightshift */
1564 2, /* size (0 = byte, 1 = short, 2 = long) */
1565 16, /* bitsize */
1566 FALSE, /* pc_relative */
1567 0, /* bitpos */
1568 complain_overflow_signed, /* complain_on_overflow */
1569 mips16_gprel_reloc, /* special_function */
1570 "R_MIPS16_GPREL", /* name */
1571 FALSE, /* partial_inplace */
1572 0x0000ffff, /* src_mask */
1573 0x0000ffff, /* dst_mask */
1574 FALSE), /* pcrel_offset */
1575
1576 /* A placeholder for MIPS16 reference to global offset table. */
1577 EMPTY_HOWTO (R_MIPS16_GOT16),
1578
1579 /* A placeholder for MIPS16 16 bit call through global offset table. */
1580 EMPTY_HOWTO (R_MIPS16_CALL16),
1581
1582 /* MIPS16 high 16 bits of symbol value. */
1583 HOWTO (R_MIPS16_HI16, /* type */
1584 16, /* rightshift */
1585 2, /* size (0 = byte, 1 = short, 2 = long) */
1586 16, /* bitsize */
1587 FALSE, /* pc_relative */
1588 0, /* bitpos */
1589 complain_overflow_dont, /* complain_on_overflow */
1590 _bfd_mips_elf_hi16_reloc, /* special_function */
1591 "R_MIPS16_HI16", /* name */
1592 FALSE, /* partial_inplace */
1593 0x0000ffff, /* src_mask */
1594 0x0000ffff, /* dst_mask */
1595 FALSE), /* pcrel_offset */
1596
1597 /* MIPS16 low 16 bits of symbol value. */
1598 HOWTO (R_MIPS16_LO16, /* type */
1599 0, /* rightshift */
1600 2, /* size (0 = byte, 1 = short, 2 = long) */
1601 16, /* bitsize */
1602 FALSE, /* pc_relative */
1603 0, /* bitpos */
1604 complain_overflow_dont, /* complain_on_overflow */
1605 _bfd_mips_elf_lo16_reloc, /* special_function */
1606 "R_MIPS16_LO16", /* name */
1607 FALSE, /* partial_inplace */
1608 0x0000ffff, /* src_mask */
1609 0x0000ffff, /* dst_mask */
1610 FALSE), /* pcrel_offset */
1611 };
1612
1613 /* GNU extension to record C++ vtable hierarchy */
1614 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1615 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1616 0, /* rightshift */
1617 2, /* size (0 = byte, 1 = short, 2 = long) */
1618 0, /* bitsize */
1619 FALSE, /* pc_relative */
1620 0, /* bitpos */
1621 complain_overflow_dont, /* complain_on_overflow */
1622 NULL, /* special_function */
1623 "R_MIPS_GNU_VTINHERIT", /* name */
1624 FALSE, /* partial_inplace */
1625 0, /* src_mask */
1626 0, /* dst_mask */
1627 FALSE); /* pcrel_offset */
1628
1629 /* GNU extension to record C++ vtable member usage */
1630 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1631 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1632 0, /* rightshift */
1633 2, /* size (0 = byte, 1 = short, 2 = long) */
1634 0, /* bitsize */
1635 FALSE, /* pc_relative */
1636 0, /* bitpos */
1637 complain_overflow_dont, /* complain_on_overflow */
1638 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1639 "R_MIPS_GNU_VTENTRY", /* name */
1640 FALSE, /* partial_inplace */
1641 0, /* src_mask */
1642 0, /* dst_mask */
1643 FALSE); /* pcrel_offset */
1644
1645 /* 16 bit offset for pc-relative branches. */
1646 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1647 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1648 2, /* rightshift */
1649 2, /* size (0 = byte, 1 = short, 2 = long) */
1650 16, /* bitsize */
1651 TRUE, /* pc_relative */
1652 0, /* bitpos */
1653 complain_overflow_signed, /* complain_on_overflow */
1654 _bfd_mips_elf_generic_reloc, /* special_function */
1655 "R_MIPS_GNU_REL16_S2", /* name */
1656 TRUE, /* partial_inplace */
1657 0x0000ffff, /* src_mask */
1658 0x0000ffff, /* dst_mask */
1659 TRUE); /* pcrel_offset */
1660
1661 /* 16 bit offset for pc-relative branches. */
1662 static reloc_howto_type elf_mips_gnu_rela16_s2 =
1663 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1664 2, /* rightshift */
1665 2, /* size (0 = byte, 1 = short, 2 = long) */
1666 16, /* bitsize */
1667 TRUE, /* pc_relative */
1668 0, /* bitpos */
1669 complain_overflow_signed, /* complain_on_overflow */
1670 _bfd_mips_elf_generic_reloc, /* special_function */
1671 "R_MIPS_GNU_REL16_S2", /* name */
1672 FALSE, /* partial_inplace */
1673 0, /* src_mask */
1674 0x0000ffff, /* dst_mask */
1675 TRUE); /* pcrel_offset */
1676
1677 /* Swap in a MIPS 64-bit Rel reloc. */
1678
1679 static void
mips_elf64_swap_reloc_in(bfd * abfd,const Elf64_Mips_External_Rel * src,Elf64_Mips_Internal_Rela * dst)1680 mips_elf64_swap_reloc_in (bfd *abfd, const Elf64_Mips_External_Rel *src,
1681 Elf64_Mips_Internal_Rela *dst)
1682 {
1683 dst->r_offset = H_GET_64 (abfd, src->r_offset);
1684 dst->r_sym = H_GET_32 (abfd, src->r_sym);
1685 dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
1686 dst->r_type3 = H_GET_8 (abfd, src->r_type3);
1687 dst->r_type2 = H_GET_8 (abfd, src->r_type2);
1688 dst->r_type = H_GET_8 (abfd, src->r_type);
1689 dst->r_addend = 0;
1690 }
1691
1692 /* Swap in a MIPS 64-bit Rela reloc. */
1693
1694 static void
mips_elf64_swap_reloca_in(bfd * abfd,const Elf64_Mips_External_Rela * src,Elf64_Mips_Internal_Rela * dst)1695 mips_elf64_swap_reloca_in (bfd *abfd, const Elf64_Mips_External_Rela *src,
1696 Elf64_Mips_Internal_Rela *dst)
1697 {
1698 dst->r_offset = H_GET_64 (abfd, src->r_offset);
1699 dst->r_sym = H_GET_32 (abfd, src->r_sym);
1700 dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
1701 dst->r_type3 = H_GET_8 (abfd, src->r_type3);
1702 dst->r_type2 = H_GET_8 (abfd, src->r_type2);
1703 dst->r_type = H_GET_8 (abfd, src->r_type);
1704 dst->r_addend = H_GET_S64 (abfd, src->r_addend);
1705 }
1706
1707 /* Swap out a MIPS 64-bit Rel reloc. */
1708
1709 static void
mips_elf64_swap_reloc_out(bfd * abfd,const Elf64_Mips_Internal_Rela * src,Elf64_Mips_External_Rel * dst)1710 mips_elf64_swap_reloc_out (bfd *abfd, const Elf64_Mips_Internal_Rela *src,
1711 Elf64_Mips_External_Rel *dst)
1712 {
1713 H_PUT_64 (abfd, src->r_offset, dst->r_offset);
1714 H_PUT_32 (abfd, src->r_sym, dst->r_sym);
1715 H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
1716 H_PUT_8 (abfd, src->r_type3, dst->r_type3);
1717 H_PUT_8 (abfd, src->r_type2, dst->r_type2);
1718 H_PUT_8 (abfd, src->r_type, dst->r_type);
1719 }
1720
1721 /* Swap out a MIPS 64-bit Rela reloc. */
1722
1723 static void
mips_elf64_swap_reloca_out(bfd * abfd,const Elf64_Mips_Internal_Rela * src,Elf64_Mips_External_Rela * dst)1724 mips_elf64_swap_reloca_out (bfd *abfd, const Elf64_Mips_Internal_Rela *src,
1725 Elf64_Mips_External_Rela *dst)
1726 {
1727 H_PUT_64 (abfd, src->r_offset, dst->r_offset);
1728 H_PUT_32 (abfd, src->r_sym, dst->r_sym);
1729 H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
1730 H_PUT_8 (abfd, src->r_type3, dst->r_type3);
1731 H_PUT_8 (abfd, src->r_type2, dst->r_type2);
1732 H_PUT_8 (abfd, src->r_type, dst->r_type);
1733 H_PUT_S64 (abfd, src->r_addend, dst->r_addend);
1734 }
1735
1736 /* Swap in a MIPS 64-bit Rel reloc. */
1737
1738 static void
mips_elf64_be_swap_reloc_in(bfd * abfd,const bfd_byte * src,Elf_Internal_Rela * dst)1739 mips_elf64_be_swap_reloc_in (bfd *abfd, const bfd_byte *src,
1740 Elf_Internal_Rela *dst)
1741 {
1742 Elf64_Mips_Internal_Rela mirel;
1743
1744 mips_elf64_swap_reloc_in (abfd,
1745 (const Elf64_Mips_External_Rel *) src,
1746 &mirel);
1747
1748 dst[0].r_offset = mirel.r_offset;
1749 dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type);
1750 dst[0].r_addend = 0;
1751 dst[1].r_offset = mirel.r_offset;
1752 dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2);
1753 dst[1].r_addend = 0;
1754 dst[2].r_offset = mirel.r_offset;
1755 dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3);
1756 dst[2].r_addend = 0;
1757 }
1758
1759 /* Swap in a MIPS 64-bit Rela reloc. */
1760
1761 static void
mips_elf64_be_swap_reloca_in(bfd * abfd,const bfd_byte * src,Elf_Internal_Rela * dst)1762 mips_elf64_be_swap_reloca_in (bfd *abfd, const bfd_byte *src,
1763 Elf_Internal_Rela *dst)
1764 {
1765 Elf64_Mips_Internal_Rela mirela;
1766
1767 mips_elf64_swap_reloca_in (abfd,
1768 (const Elf64_Mips_External_Rela *) src,
1769 &mirela);
1770
1771 dst[0].r_offset = mirela.r_offset;
1772 dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type);
1773 dst[0].r_addend = mirela.r_addend;
1774 dst[1].r_offset = mirela.r_offset;
1775 dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2);
1776 dst[1].r_addend = 0;
1777 dst[2].r_offset = mirela.r_offset;
1778 dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3);
1779 dst[2].r_addend = 0;
1780 }
1781
1782 /* Swap out a MIPS 64-bit Rel reloc. */
1783
1784 static void
mips_elf64_be_swap_reloc_out(bfd * abfd,const Elf_Internal_Rela * src,bfd_byte * dst)1785 mips_elf64_be_swap_reloc_out (bfd *abfd, const Elf_Internal_Rela *src,
1786 bfd_byte *dst)
1787 {
1788 Elf64_Mips_Internal_Rela mirel;
1789
1790 mirel.r_offset = src[0].r_offset;
1791 BFD_ASSERT(src[0].r_offset == src[1].r_offset);
1792
1793 mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
1794 mirel.r_sym = ELF64_R_SYM (src[0].r_info);
1795 mirel.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
1796 mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
1797 mirel.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
1798
1799 mips_elf64_swap_reloc_out (abfd, &mirel,
1800 (Elf64_Mips_External_Rel *) dst);
1801 }
1802
1803 /* Swap out a MIPS 64-bit Rela reloc. */
1804
1805 static void
mips_elf64_be_swap_reloca_out(bfd * abfd,const Elf_Internal_Rela * src,bfd_byte * dst)1806 mips_elf64_be_swap_reloca_out (bfd *abfd, const Elf_Internal_Rela *src,
1807 bfd_byte *dst)
1808 {
1809 Elf64_Mips_Internal_Rela mirela;
1810
1811 mirela.r_offset = src[0].r_offset;
1812 BFD_ASSERT(src[0].r_offset == src[1].r_offset);
1813 BFD_ASSERT(src[0].r_offset == src[2].r_offset);
1814
1815 mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
1816 mirela.r_sym = ELF64_R_SYM (src[0].r_info);
1817 mirela.r_addend = src[0].r_addend;
1818 BFD_ASSERT(src[1].r_addend == 0);
1819 BFD_ASSERT(src[2].r_addend == 0);
1820
1821 mirela.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
1822 mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
1823 mirela.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
1824
1825 mips_elf64_swap_reloca_out (abfd, &mirela,
1826 (Elf64_Mips_External_Rela *) dst);
1827 }
1828
1829 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
1830 dangerous relocation. */
1831
1832 static bfd_boolean
mips_elf64_assign_gp(bfd * output_bfd,bfd_vma * pgp)1833 mips_elf64_assign_gp (bfd *output_bfd, bfd_vma *pgp)
1834 {
1835 unsigned int count;
1836 asymbol **sym;
1837 unsigned int i;
1838
1839 /* If we've already figured out what GP will be, just return it. */
1840 *pgp = _bfd_get_gp_value (output_bfd);
1841 if (*pgp)
1842 return TRUE;
1843
1844 count = bfd_get_symcount (output_bfd);
1845 sym = bfd_get_outsymbols (output_bfd);
1846
1847 /* The linker script will have created a symbol named `_gp' with the
1848 appropriate value. */
1849 if (sym == NULL)
1850 i = count;
1851 else
1852 {
1853 for (i = 0; i < count; i++, sym++)
1854 {
1855 register const char *name;
1856
1857 name = bfd_asymbol_name (*sym);
1858 if (*name == '_' && strcmp (name, "_gp") == 0)
1859 {
1860 *pgp = bfd_asymbol_value (*sym);
1861 _bfd_set_gp_value (output_bfd, *pgp);
1862 break;
1863 }
1864 }
1865 }
1866
1867 if (i >= count)
1868 {
1869 /* Only get the error once. */
1870 *pgp = 4;
1871 _bfd_set_gp_value (output_bfd, *pgp);
1872 return FALSE;
1873 }
1874
1875 return TRUE;
1876 }
1877
1878 /* We have to figure out the gp value, so that we can adjust the
1879 symbol value correctly. We look up the symbol _gp in the output
1880 BFD. If we can't find it, we're stuck. We cache it in the ELF
1881 target data. We don't need to adjust the symbol value for an
1882 external symbol if we are producing relocatable output. */
1883
1884 static bfd_reloc_status_type
mips_elf64_final_gp(bfd * output_bfd,asymbol * symbol,bfd_boolean relocatable,char ** error_message,bfd_vma * pgp)1885 mips_elf64_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
1886 char **error_message, bfd_vma *pgp)
1887 {
1888 if (bfd_is_und_section (symbol->section)
1889 && ! relocatable)
1890 {
1891 *pgp = 0;
1892 return bfd_reloc_undefined;
1893 }
1894
1895 *pgp = _bfd_get_gp_value (output_bfd);
1896 if (*pgp == 0
1897 && (! relocatable
1898 || (symbol->flags & BSF_SECTION_SYM) != 0))
1899 {
1900 if (relocatable)
1901 {
1902 /* Make up a value. */
1903 *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
1904 _bfd_set_gp_value (output_bfd, *pgp);
1905 }
1906 else if (!mips_elf64_assign_gp (output_bfd, pgp))
1907 {
1908 *error_message =
1909 (char *) _("GP relative relocation when _gp not defined");
1910 return bfd_reloc_dangerous;
1911 }
1912 }
1913
1914 return bfd_reloc_ok;
1915 }
1916
1917 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1918 become the offset from the gp register. */
1919
1920 static bfd_reloc_status_type
mips_elf64_gprel16_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1921 mips_elf64_gprel16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1922 void *data, asection *input_section, bfd *output_bfd,
1923 char **error_message)
1924 {
1925 bfd_boolean relocatable;
1926 bfd_reloc_status_type ret;
1927 bfd_vma gp;
1928
1929 /* If we're relocating, and this is an external symbol, we don't want
1930 to change anything. */
1931 if (output_bfd != NULL
1932 && (symbol->flags & BSF_SECTION_SYM) == 0
1933 && (symbol->flags & BSF_LOCAL) != 0)
1934 {
1935 reloc_entry->address += input_section->output_offset;
1936 return bfd_reloc_ok;
1937 }
1938
1939 if (output_bfd != NULL)
1940 relocatable = TRUE;
1941 else
1942 {
1943 relocatable = FALSE;
1944 output_bfd = symbol->section->output_section->owner;
1945 }
1946
1947 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
1948 &gp);
1949 if (ret != bfd_reloc_ok)
1950 return ret;
1951
1952 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1953 input_section, relocatable,
1954 data, gp);
1955 }
1956
1957 /* Do a R_MIPS_LITERAL relocation. */
1958
1959 static bfd_reloc_status_type
mips_elf64_literal_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1960 mips_elf64_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1961 void *data, asection *input_section, bfd *output_bfd,
1962 char **error_message)
1963 {
1964 bfd_boolean relocatable;
1965 bfd_reloc_status_type ret;
1966 bfd_vma gp;
1967
1968 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1969 if (output_bfd != NULL
1970 && (symbol->flags & BSF_SECTION_SYM) == 0
1971 && (symbol->flags & BSF_LOCAL) != 0)
1972 {
1973 *error_message = (char *)
1974 _("literal relocation occurs for an external symbol");
1975 return bfd_reloc_outofrange;
1976 }
1977
1978 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
1979 if (output_bfd != NULL)
1980 relocatable = TRUE;
1981 else
1982 {
1983 relocatable = FALSE;
1984 output_bfd = symbol->section->output_section->owner;
1985 }
1986
1987 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
1988 &gp);
1989 if (ret != bfd_reloc_ok)
1990 return ret;
1991
1992 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1993 input_section, relocatable,
1994 data, gp);
1995 }
1996
1997 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1998 become the offset from the gp register. */
1999
2000 static bfd_reloc_status_type
mips_elf64_gprel32_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)2001 mips_elf64_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2002 void *data, asection *input_section, bfd *output_bfd,
2003 char **error_message)
2004 {
2005 bfd_boolean relocatable;
2006 bfd_reloc_status_type ret;
2007 bfd_vma gp;
2008 bfd_vma relocation;
2009 bfd_vma val;
2010
2011 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
2012 if (output_bfd != NULL
2013 && (symbol->flags & BSF_SECTION_SYM) == 0
2014 && (symbol->flags & BSF_LOCAL) != 0)
2015 {
2016 *error_message = (char *)
2017 _("32bits gp relative relocation occurs for an external symbol");
2018 return bfd_reloc_outofrange;
2019 }
2020
2021 if (output_bfd != NULL)
2022 relocatable = TRUE;
2023 else
2024 {
2025 relocatable = FALSE;
2026 output_bfd = symbol->section->output_section->owner;
2027 }
2028
2029 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable,
2030 error_message, &gp);
2031 if (ret != bfd_reloc_ok)
2032 return ret;
2033
2034 if (bfd_is_com_section (symbol->section))
2035 relocation = 0;
2036 else
2037 relocation = symbol->value;
2038
2039 relocation += symbol->section->output_section->vma;
2040 relocation += symbol->section->output_offset;
2041
2042 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2043 return bfd_reloc_outofrange;
2044
2045 /* Set val to the offset into the section or symbol. */
2046 val = reloc_entry->addend;
2047
2048 if (reloc_entry->howto->partial_inplace)
2049 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
2050
2051 /* Adjust val for the final section location and GP value. If we
2052 are producing relocatable output, we don't want to do this for
2053 an external symbol. */
2054 if (! relocatable
2055 || (symbol->flags & BSF_SECTION_SYM) != 0)
2056 val += relocation - gp;
2057
2058 if (reloc_entry->howto->partial_inplace)
2059 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
2060 else
2061 reloc_entry->addend = val;
2062
2063 if (relocatable)
2064 reloc_entry->address += input_section->output_offset;
2065
2066 return bfd_reloc_ok;
2067 }
2068
2069 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
2070 the rest is at bits 6-10. The bitpos already got right by the howto. */
2071
2072 static bfd_reloc_status_type
mips_elf64_shift6_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)2073 mips_elf64_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2074 void *data, asection *input_section, bfd *output_bfd,
2075 char **error_message)
2076 {
2077 if (reloc_entry->howto->partial_inplace)
2078 {
2079 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0)
2080 | (reloc_entry->addend & 0x00000800) >> 9);
2081 }
2082
2083 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2084 input_section, output_bfd,
2085 error_message);
2086 }
2087
2088 /* Handle a mips16 GP relative reloc. */
2089
2090 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)2091 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2092 void *data, asection *input_section, bfd *output_bfd,
2093 char **error_message)
2094 {
2095 bfd_boolean relocatable;
2096 bfd_reloc_status_type ret;
2097 bfd_byte *location;
2098 bfd_vma gp;
2099
2100 /* If we're relocating, and this is an external symbol, we don't want
2101 to change anything. */
2102 if (output_bfd != NULL
2103 && (symbol->flags & BSF_SECTION_SYM) == 0
2104 && (symbol->flags & BSF_LOCAL) != 0)
2105 {
2106 reloc_entry->address += input_section->output_offset;
2107 return bfd_reloc_ok;
2108 }
2109
2110 if (output_bfd != NULL)
2111 relocatable = TRUE;
2112 else
2113 {
2114 relocatable = FALSE;
2115 output_bfd = symbol->section->output_section->owner;
2116 }
2117
2118 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
2119 &gp);
2120 if (ret != bfd_reloc_ok)
2121 return ret;
2122
2123 location = (bfd_byte *) data + reloc_entry->address;
2124 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
2125 location);
2126 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
2127 input_section, relocatable,
2128 data, gp);
2129 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
2130 location);
2131
2132 return ret;
2133 }
2134
2135 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
2136
2137 struct elf_reloc_map {
2138 bfd_reloc_code_real_type bfd_val;
2139 enum elf_mips_reloc_type elf_val;
2140 };
2141
2142 static const struct elf_reloc_map mips_reloc_map[] =
2143 {
2144 { BFD_RELOC_NONE, R_MIPS_NONE },
2145 { BFD_RELOC_16, R_MIPS_16 },
2146 { BFD_RELOC_32, R_MIPS_32 },
2147 /* There is no BFD reloc for R_MIPS_REL32. */
2148 { BFD_RELOC_64, R_MIPS_64 },
2149 { BFD_RELOC_CTOR, R_MIPS_64 },
2150 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
2151 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
2152 { BFD_RELOC_LO16, R_MIPS_LO16 },
2153 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
2154 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
2155 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
2156 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
2157 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
2158 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
2159 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
2160 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
2161 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
2162 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
2163 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
2164 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
2165 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
2166 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
2167 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
2168 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
2169 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
2170 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
2171 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
2172 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
2173 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
2174 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
2175 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
2176 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
2177 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
2178 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR },
2179 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
2180 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
2181 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
2182 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
2183 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
2184 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
2185 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
2186 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
2187 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
2188 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
2189 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
2190 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
2191 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
2192 };
2193
2194 static const struct elf_reloc_map mips16_reloc_map[] =
2195 {
2196 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
2197 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
2198 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
2199 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
2200 };
2201
2202 /* Given a BFD reloc type, return a howto structure. */
2203
2204 static reloc_howto_type *
bfd_elf64_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)2205 bfd_elf64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2206 bfd_reloc_code_real_type code)
2207 {
2208 unsigned int i;
2209 /* FIXME: We default to RELA here instead of choosing the right
2210 relocation variant. */
2211 reloc_howto_type *howto_table = mips_elf64_howto_table_rela;
2212 reloc_howto_type *howto16_table = mips16_elf64_howto_table_rela;
2213
2214 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
2215 i++)
2216 {
2217 if (mips_reloc_map[i].bfd_val == code)
2218 return &howto_table[(int) mips_reloc_map[i].elf_val];
2219 }
2220
2221 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
2222 i++)
2223 {
2224 if (mips16_reloc_map[i].bfd_val == code)
2225 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
2226 }
2227
2228 switch (code)
2229 {
2230 case BFD_RELOC_VTABLE_INHERIT:
2231 return &elf_mips_gnu_vtinherit_howto;
2232 case BFD_RELOC_VTABLE_ENTRY:
2233 return &elf_mips_gnu_vtentry_howto;
2234 default:
2235 bfd_set_error (bfd_error_bad_value);
2236 return NULL;
2237 }
2238 }
2239
2240 static reloc_howto_type *
bfd_elf64_bfd_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)2241 bfd_elf64_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2242 const char *r_name)
2243 {
2244 unsigned int i;
2245
2246 for (i = 0;
2247 i < (sizeof (mips_elf64_howto_table_rela)
2248 / sizeof (mips_elf64_howto_table_rela[0])); i++)
2249 if (mips_elf64_howto_table_rela[i].name != NULL
2250 && strcasecmp (mips_elf64_howto_table_rela[i].name, r_name) == 0)
2251 return &mips_elf64_howto_table_rela[i];
2252
2253 for (i = 0;
2254 i < (sizeof (mips16_elf64_howto_table_rela)
2255 / sizeof (mips16_elf64_howto_table_rela[0]));
2256 i++)
2257 if (mips16_elf64_howto_table_rela[i].name != NULL
2258 && strcasecmp (mips16_elf64_howto_table_rela[i].name, r_name) == 0)
2259 return &mips16_elf64_howto_table_rela[i];
2260
2261 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
2262 return &elf_mips_gnu_vtinherit_howto;
2263 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
2264 return &elf_mips_gnu_vtentry_howto;
2265 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
2266 return &elf_mips_gnu_rel16_s2;
2267 if (strcasecmp (elf_mips_gnu_rela16_s2.name, r_name) == 0)
2268 return &elf_mips_gnu_rela16_s2;
2269
2270 return NULL;
2271 }
2272
2273 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2274
2275 static reloc_howto_type *
mips_elf64_rtype_to_howto(unsigned int r_type,bfd_boolean rela_p)2276 mips_elf64_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
2277 {
2278 switch (r_type)
2279 {
2280 case R_MIPS_GNU_VTINHERIT:
2281 return &elf_mips_gnu_vtinherit_howto;
2282 case R_MIPS_GNU_VTENTRY:
2283 return &elf_mips_gnu_vtentry_howto;
2284 case R_MIPS_GNU_REL16_S2:
2285 if (rela_p)
2286 return &elf_mips_gnu_rela16_s2;
2287 else
2288 return &elf_mips_gnu_rel16_s2;
2289 default:
2290 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
2291 {
2292 if (rela_p)
2293 return &mips16_elf64_howto_table_rela[r_type - R_MIPS16_min];
2294 else
2295 return &mips16_elf64_howto_table_rel[r_type - R_MIPS16_min];
2296 }
2297 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
2298 if (rela_p)
2299 return &mips_elf64_howto_table_rela[r_type];
2300 else
2301 return &mips_elf64_howto_table_rel[r_type];
2302 break;
2303 }
2304 }
2305
2306 /* Prevent relocation handling by bfd for MIPS ELF64. */
2307
2308 static void
mips_elf64_info_to_howto_rel(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr ATTRIBUTE_UNUSED,Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)2309 mips_elf64_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
2310 arelent *cache_ptr ATTRIBUTE_UNUSED,
2311 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
2312 {
2313 BFD_ASSERT (0);
2314 }
2315
2316 static void
mips_elf64_info_to_howto_rela(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr ATTRIBUTE_UNUSED,Elf_Internal_Rela * dst ATTRIBUTE_UNUSED)2317 mips_elf64_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
2318 arelent *cache_ptr ATTRIBUTE_UNUSED,
2319 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
2320 {
2321 BFD_ASSERT (0);
2322 }
2323
2324 /* Since each entry in an SHT_REL or SHT_RELA section can represent up
2325 to three relocs, we must tell the user to allocate more space. */
2326
2327 static long
mips_elf64_get_reloc_upper_bound(bfd * abfd ATTRIBUTE_UNUSED,asection * sec)2328 mips_elf64_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2329 {
2330 return (sec->reloc_count * 3 + 1) * sizeof (arelent *);
2331 }
2332
2333 static long
mips_elf64_get_dynamic_reloc_upper_bound(bfd * abfd)2334 mips_elf64_get_dynamic_reloc_upper_bound (bfd *abfd)
2335 {
2336 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 3;
2337 }
2338
2339 /* We must also copy more relocations than the corresponding functions
2340 in elf.c would, so the two following functions are slightly
2341 modified from elf.c, that multiply the external relocation count by
2342 3 to obtain the internal relocation count. */
2343
2344 static long
mips_elf64_canonicalize_reloc(bfd * abfd,sec_ptr section,arelent ** relptr,asymbol ** symbols)2345 mips_elf64_canonicalize_reloc (bfd *abfd, sec_ptr section,
2346 arelent **relptr, asymbol **symbols)
2347 {
2348 arelent *tblptr;
2349 unsigned int i;
2350 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2351
2352 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
2353 return -1;
2354
2355 tblptr = section->relocation;
2356 for (i = 0; i < section->reloc_count * 3; i++)
2357 *relptr++ = tblptr++;
2358
2359 *relptr = NULL;
2360
2361 return section->reloc_count * 3;
2362 }
2363
2364 static long
mips_elf64_canonicalize_dynamic_reloc(bfd * abfd,arelent ** storage,asymbol ** syms)2365 mips_elf64_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage,
2366 asymbol **syms)
2367 {
2368 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2369 asection *s;
2370 long ret;
2371
2372 if (elf_dynsymtab (abfd) == 0)
2373 {
2374 bfd_set_error (bfd_error_invalid_operation);
2375 return -1;
2376 }
2377
2378 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2379 ret = 0;
2380 for (s = abfd->sections; s != NULL; s = s->next)
2381 {
2382 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
2383 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
2384 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
2385 {
2386 arelent *p;
2387 long count, i;
2388
2389 if (! (*slurp_relocs) (abfd, s, syms, TRUE))
2390 return -1;
2391 count = s->size / elf_section_data (s)->this_hdr.sh_entsize * 3;
2392 p = s->relocation;
2393 for (i = 0; i < count; i++)
2394 *storage++ = p++;
2395 ret += count;
2396 }
2397 }
2398
2399 *storage = NULL;
2400
2401 return ret;
2402 }
2403
2404 /* Read the relocations from one reloc section. This is mostly copied
2405 from elfcode.h, except for the changes to expand one external
2406 relocation to 3 internal ones. We must unfortunately set
2407 reloc_count to the number of external relocations, because a lot of
2408 generic code seems to depend on this. */
2409
2410 static bfd_boolean
mips_elf64_slurp_one_reloc_table(bfd * abfd,asection * asect,Elf_Internal_Shdr * rel_hdr,bfd_size_type reloc_count,arelent * relents,asymbol ** symbols,bfd_boolean dynamic)2411 mips_elf64_slurp_one_reloc_table (bfd *abfd, asection *asect,
2412 Elf_Internal_Shdr *rel_hdr,
2413 bfd_size_type reloc_count,
2414 arelent *relents, asymbol **symbols,
2415 bfd_boolean dynamic)
2416 {
2417 void *allocated;
2418 bfd_byte *native_relocs;
2419 arelent *relent;
2420 bfd_vma i;
2421 int entsize;
2422 bfd_boolean rela_p;
2423
2424 allocated = bfd_malloc (rel_hdr->sh_size);
2425 if (allocated == NULL)
2426 return FALSE;
2427
2428 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
2429 || (bfd_bread (allocated, rel_hdr->sh_size, abfd)
2430 != rel_hdr->sh_size))
2431 goto error_return;
2432
2433 native_relocs = allocated;
2434
2435 entsize = rel_hdr->sh_entsize;
2436 BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel)
2437 || entsize == sizeof (Elf64_Mips_External_Rela));
2438
2439 if (entsize == sizeof (Elf64_Mips_External_Rel))
2440 rela_p = FALSE;
2441 else
2442 rela_p = TRUE;
2443
2444 for (i = 0, relent = relents;
2445 i < reloc_count;
2446 i++, native_relocs += entsize)
2447 {
2448 Elf64_Mips_Internal_Rela rela;
2449 bfd_boolean used_sym, used_ssym;
2450 int ir;
2451
2452 if (entsize == sizeof (Elf64_Mips_External_Rela))
2453 mips_elf64_swap_reloca_in (abfd,
2454 (Elf64_Mips_External_Rela *) native_relocs,
2455 &rela);
2456 else
2457 mips_elf64_swap_reloc_in (abfd,
2458 (Elf64_Mips_External_Rel *) native_relocs,
2459 &rela);
2460
2461 /* Each entry represents exactly three actual relocations. */
2462
2463 used_sym = FALSE;
2464 used_ssym = FALSE;
2465 for (ir = 0; ir < 3; ir++)
2466 {
2467 enum elf_mips_reloc_type type;
2468
2469 switch (ir)
2470 {
2471 default:
2472 abort ();
2473 case 0:
2474 type = (enum elf_mips_reloc_type) rela.r_type;
2475 break;
2476 case 1:
2477 type = (enum elf_mips_reloc_type) rela.r_type2;
2478 break;
2479 case 2:
2480 type = (enum elf_mips_reloc_type) rela.r_type3;
2481 break;
2482 }
2483
2484 /* Some types require symbols, whereas some do not. */
2485 switch (type)
2486 {
2487 case R_MIPS_NONE:
2488 case R_MIPS_LITERAL:
2489 case R_MIPS_INSERT_A:
2490 case R_MIPS_INSERT_B:
2491 case R_MIPS_DELETE:
2492 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2493 break;
2494
2495 default:
2496 if (! used_sym)
2497 {
2498 if (rela.r_sym == 0)
2499 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2500 else
2501 {
2502 asymbol **ps, *s;
2503
2504 ps = symbols + rela.r_sym - 1;
2505 s = *ps;
2506 if ((s->flags & BSF_SECTION_SYM) == 0)
2507 relent->sym_ptr_ptr = ps;
2508 else
2509 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
2510 }
2511
2512 used_sym = TRUE;
2513 }
2514 else if (! used_ssym)
2515 {
2516 switch (rela.r_ssym)
2517 {
2518 case RSS_UNDEF:
2519 relent->sym_ptr_ptr =
2520 bfd_abs_section_ptr->symbol_ptr_ptr;
2521 break;
2522
2523 case RSS_GP:
2524 case RSS_GP0:
2525 case RSS_LOC:
2526 /* FIXME: I think these need to be handled using
2527 special howto structures. */
2528 BFD_ASSERT (0);
2529 break;
2530
2531 default:
2532 BFD_ASSERT (0);
2533 break;
2534 }
2535
2536 used_ssym = TRUE;
2537 }
2538 else
2539 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2540
2541 break;
2542 }
2543
2544 /* The address of an ELF reloc is section relative for an
2545 object file, and absolute for an executable file or
2546 shared library. The address of a BFD reloc is always
2547 section relative. */
2548 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
2549 relent->address = rela.r_offset;
2550 else
2551 relent->address = rela.r_offset - asect->vma;
2552
2553 relent->addend = rela.r_addend;
2554
2555 relent->howto = mips_elf64_rtype_to_howto (type, rela_p);
2556
2557 ++relent;
2558 }
2559 }
2560
2561 asect->reloc_count += (relent - relents) / 3;
2562
2563 if (allocated != NULL)
2564 free (allocated);
2565
2566 return TRUE;
2567
2568 error_return:
2569 if (allocated != NULL)
2570 free (allocated);
2571 return FALSE;
2572 }
2573
2574 /* Read the relocations. On Irix 6, there can be two reloc sections
2575 associated with a single data section. This is copied from
2576 elfcode.h as well, with changes as small as accounting for 3
2577 internal relocs per external reloc and resetting reloc_count to
2578 zero before processing the relocs of a section. */
2579
2580 static bfd_boolean
mips_elf64_slurp_reloc_table(bfd * abfd,asection * asect,asymbol ** symbols,bfd_boolean dynamic)2581 mips_elf64_slurp_reloc_table (bfd *abfd, asection *asect,
2582 asymbol **symbols, bfd_boolean dynamic)
2583 {
2584 struct bfd_elf_section_data * const d = elf_section_data (asect);
2585 Elf_Internal_Shdr *rel_hdr;
2586 Elf_Internal_Shdr *rel_hdr2;
2587 bfd_size_type reloc_count;
2588 bfd_size_type reloc_count2;
2589 arelent *relents;
2590 bfd_size_type amt;
2591
2592 if (asect->relocation != NULL)
2593 return TRUE;
2594
2595 if (! dynamic)
2596 {
2597 if ((asect->flags & SEC_RELOC) == 0
2598 || asect->reloc_count == 0)
2599 return TRUE;
2600
2601 rel_hdr = &d->rel_hdr;
2602 reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
2603 rel_hdr2 = d->rel_hdr2;
2604 reloc_count2 = (rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0);
2605
2606 BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2);
2607 BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
2608 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
2609
2610 }
2611 else
2612 {
2613 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
2614 case because relocations against this section may use the
2615 dynamic symbol table, and in that case bfd_section_from_shdr
2616 in elf.c does not update the RELOC_COUNT. */
2617 if (asect->size == 0)
2618 return TRUE;
2619
2620 rel_hdr = &d->this_hdr;
2621 reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
2622 rel_hdr2 = NULL;
2623 reloc_count2 = 0;
2624 }
2625
2626 /* Allocate space for 3 arelent structures for each Rel structure. */
2627 amt = (reloc_count + reloc_count2) * 3 * sizeof (arelent);
2628 relents = bfd_alloc (abfd, amt);
2629 if (relents == NULL)
2630 return FALSE;
2631
2632 /* The slurp_one_reloc_table routine increments reloc_count. */
2633 asect->reloc_count = 0;
2634
2635 if (! mips_elf64_slurp_one_reloc_table (abfd, asect,
2636 rel_hdr, reloc_count,
2637 relents,
2638 symbols, dynamic))
2639 return FALSE;
2640 if (d->rel_hdr2 != NULL)
2641 {
2642 if (! mips_elf64_slurp_one_reloc_table (abfd, asect,
2643 rel_hdr2, reloc_count2,
2644 relents + reloc_count * 3,
2645 symbols, dynamic))
2646 return FALSE;
2647 }
2648
2649 asect->relocation = relents;
2650 return TRUE;
2651 }
2652
2653 /* Write out the relocations. */
2654
2655 static void
mips_elf64_write_relocs(bfd * abfd,asection * sec,void * data)2656 mips_elf64_write_relocs (bfd *abfd, asection *sec, void *data)
2657 {
2658 bfd_boolean *failedp = data;
2659 int count;
2660 Elf_Internal_Shdr *rel_hdr;
2661 unsigned int idx;
2662
2663 /* If we have already failed, don't do anything. */
2664 if (*failedp)
2665 return;
2666
2667 if ((sec->flags & SEC_RELOC) == 0)
2668 return;
2669
2670 /* The linker backend writes the relocs out itself, and sets the
2671 reloc_count field to zero to inhibit writing them here. Also,
2672 sometimes the SEC_RELOC flag gets set even when there aren't any
2673 relocs. */
2674 if (sec->reloc_count == 0)
2675 return;
2676
2677 /* We can combine up to three relocs that refer to the same address
2678 if the latter relocs have no associated symbol. */
2679 count = 0;
2680 for (idx = 0; idx < sec->reloc_count; idx++)
2681 {
2682 bfd_vma addr;
2683 unsigned int i;
2684
2685 ++count;
2686
2687 addr = sec->orelocation[idx]->address;
2688 for (i = 0; i < 2; i++)
2689 {
2690 arelent *r;
2691
2692 if (idx + 1 >= sec->reloc_count)
2693 break;
2694 r = sec->orelocation[idx + 1];
2695 if (r->address != addr
2696 || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
2697 || (*r->sym_ptr_ptr)->value != 0)
2698 break;
2699
2700 /* We can merge the reloc at IDX + 1 with the reloc at IDX. */
2701
2702 ++idx;
2703 }
2704 }
2705
2706 rel_hdr = &elf_section_data (sec)->rel_hdr;
2707
2708 /* Do the actual relocation. */
2709
2710 if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel))
2711 mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data);
2712 else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela))
2713 mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data);
2714 else
2715 BFD_ASSERT (0);
2716 }
2717
2718 static void
mips_elf64_write_rel(bfd * abfd,asection * sec,Elf_Internal_Shdr * rel_hdr,int * count,void * data)2719 mips_elf64_write_rel (bfd *abfd, asection *sec,
2720 Elf_Internal_Shdr *rel_hdr,
2721 int *count, void *data)
2722 {
2723 bfd_boolean *failedp = data;
2724 Elf64_Mips_External_Rel *ext_rel;
2725 unsigned int idx;
2726 asymbol *last_sym = 0;
2727 int last_sym_idx = 0;
2728
2729 rel_hdr->sh_size = rel_hdr->sh_entsize * *count;
2730 rel_hdr->contents = bfd_alloc (abfd, rel_hdr->sh_size);
2731 if (rel_hdr->contents == NULL)
2732 {
2733 *failedp = TRUE;
2734 return;
2735 }
2736
2737 ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents;
2738 for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++)
2739 {
2740 arelent *ptr;
2741 Elf64_Mips_Internal_Rela int_rel;
2742 asymbol *sym;
2743 int n;
2744 unsigned int i;
2745
2746 ptr = sec->orelocation[idx];
2747
2748 /* The address of an ELF reloc is section relative for an object
2749 file, and absolute for an executable file or shared library.
2750 The address of a BFD reloc is always section relative. */
2751 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
2752 int_rel.r_offset = ptr->address;
2753 else
2754 int_rel.r_offset = ptr->address + sec->vma;
2755
2756 sym = *ptr->sym_ptr_ptr;
2757 if (sym == last_sym)
2758 n = last_sym_idx;
2759 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
2760 n = STN_UNDEF;
2761 else
2762 {
2763 last_sym = sym;
2764 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
2765 if (n < 0)
2766 {
2767 *failedp = TRUE;
2768 return;
2769 }
2770 last_sym_idx = n;
2771 }
2772
2773 int_rel.r_sym = n;
2774 int_rel.r_ssym = RSS_UNDEF;
2775
2776 if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
2777 && ! _bfd_elf_validate_reloc (abfd, ptr))
2778 {
2779 *failedp = TRUE;
2780 return;
2781 }
2782
2783 int_rel.r_type = ptr->howto->type;
2784 int_rel.r_type2 = (int) R_MIPS_NONE;
2785 int_rel.r_type3 = (int) R_MIPS_NONE;
2786
2787 for (i = 0; i < 2; i++)
2788 {
2789 arelent *r;
2790
2791 if (idx + 1 >= sec->reloc_count)
2792 break;
2793 r = sec->orelocation[idx + 1];
2794 if (r->address != ptr->address
2795 || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
2796 || (*r->sym_ptr_ptr)->value != 0)
2797 break;
2798
2799 /* We can merge the reloc at IDX + 1 with the reloc at IDX. */
2800
2801 if (i == 0)
2802 int_rel.r_type2 = r->howto->type;
2803 else
2804 int_rel.r_type3 = r->howto->type;
2805
2806 ++idx;
2807 }
2808
2809 mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel);
2810 }
2811
2812 BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents
2813 == *count);
2814 }
2815
2816 static void
mips_elf64_write_rela(bfd * abfd,asection * sec,Elf_Internal_Shdr * rela_hdr,int * count,void * data)2817 mips_elf64_write_rela (bfd *abfd, asection *sec,
2818 Elf_Internal_Shdr *rela_hdr,
2819 int *count, void *data)
2820 {
2821 bfd_boolean *failedp = data;
2822 Elf64_Mips_External_Rela *ext_rela;
2823 unsigned int idx;
2824 asymbol *last_sym = 0;
2825 int last_sym_idx = 0;
2826
2827 rela_hdr->sh_size = rela_hdr->sh_entsize * *count;
2828 rela_hdr->contents = bfd_alloc (abfd, rela_hdr->sh_size);
2829 if (rela_hdr->contents == NULL)
2830 {
2831 *failedp = TRUE;
2832 return;
2833 }
2834
2835 ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents;
2836 for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++)
2837 {
2838 arelent *ptr;
2839 Elf64_Mips_Internal_Rela int_rela;
2840 asymbol *sym;
2841 int n;
2842 unsigned int i;
2843
2844 ptr = sec->orelocation[idx];
2845
2846 /* The address of an ELF reloc is section relative for an object
2847 file, and absolute for an executable file or shared library.
2848 The address of a BFD reloc is always section relative. */
2849 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
2850 int_rela.r_offset = ptr->address;
2851 else
2852 int_rela.r_offset = ptr->address + sec->vma;
2853
2854 sym = *ptr->sym_ptr_ptr;
2855 if (sym == last_sym)
2856 n = last_sym_idx;
2857 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
2858 n = STN_UNDEF;
2859 else
2860 {
2861 last_sym = sym;
2862 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
2863 if (n < 0)
2864 {
2865 *failedp = TRUE;
2866 return;
2867 }
2868 last_sym_idx = n;
2869 }
2870
2871 int_rela.r_sym = n;
2872 int_rela.r_addend = ptr->addend;
2873 int_rela.r_ssym = RSS_UNDEF;
2874
2875 if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
2876 && ! _bfd_elf_validate_reloc (abfd, ptr))
2877 {
2878 *failedp = TRUE;
2879 return;
2880 }
2881
2882 int_rela.r_type = ptr->howto->type;
2883 int_rela.r_type2 = (int) R_MIPS_NONE;
2884 int_rela.r_type3 = (int) R_MIPS_NONE;
2885
2886 for (i = 0; i < 2; i++)
2887 {
2888 arelent *r;
2889
2890 if (idx + 1 >= sec->reloc_count)
2891 break;
2892 r = sec->orelocation[idx + 1];
2893 if (r->address != ptr->address
2894 || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
2895 || (*r->sym_ptr_ptr)->value != 0)
2896 break;
2897
2898 /* We can merge the reloc at IDX + 1 with the reloc at IDX. */
2899
2900 if (i == 0)
2901 int_rela.r_type2 = r->howto->type;
2902 else
2903 int_rela.r_type3 = r->howto->type;
2904
2905 ++idx;
2906 }
2907
2908 mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela);
2909 }
2910
2911 BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents
2912 == *count);
2913 }
2914
2915 /* Set the right machine number for a MIPS ELF file. */
2916
2917 static bfd_boolean
mips_elf64_object_p(bfd * abfd)2918 mips_elf64_object_p (bfd *abfd)
2919 {
2920 unsigned long mach;
2921
2922 /* Irix 6 is broken. Object file symbol tables are not always
2923 sorted correctly such that local symbols precede global symbols,
2924 and the sh_info field in the symbol table is not always right. */
2925 if (elf64_mips_irix_compat (abfd) != ict_none)
2926 elf_bad_symtab (abfd) = TRUE;
2927
2928 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
2929 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
2930 return TRUE;
2931 }
2932
2933 /* Depending on the target vector we generate some version of Irix
2934 executables or "normal" MIPS ELF ABI executables. */
2935 static irix_compat_t
elf64_mips_irix_compat(bfd * abfd)2936 elf64_mips_irix_compat (bfd *abfd)
2937 {
2938 if ((abfd->xvec == &bfd_elf64_bigmips_vec)
2939 || (abfd->xvec == &bfd_elf64_littlemips_vec))
2940 return ict_irix6;
2941 else
2942 return ict_none;
2943 }
2944
2945 /* Support for core dump NOTE sections. */
2946 static bfd_boolean
elf64_mips_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)2947 elf64_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2948 {
2949 int offset;
2950 unsigned int size;
2951
2952 switch (note->descsz)
2953 {
2954 default:
2955 return FALSE;
2956
2957 case 480: /* Linux/MIPS - N64 kernel */
2958 /* pr_cursig */
2959 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2960
2961 /* pr_pid */
2962 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2963
2964 /* pr_reg */
2965 offset = 112;
2966 size = 360;
2967
2968 break;
2969 }
2970
2971 /* Make a ".reg/999" section. */
2972 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2973 size, note->descpos + offset);
2974 }
2975
2976 static bfd_boolean
elf64_mips_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)2977 elf64_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2978 {
2979 switch (note->descsz)
2980 {
2981 default:
2982 return FALSE;
2983
2984 case 136: /* Linux/MIPS - N64 kernel elf_prpsinfo */
2985 elf_tdata (abfd)->core_program
2986 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2987 elf_tdata (abfd)->core_command
2988 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2989 }
2990
2991 /* Note that for some reason, a spurious space is tacked
2992 onto the end of the args in some (at least one anyway)
2993 implementations, so strip it off if it exists. */
2994
2995 {
2996 char *command = elf_tdata (abfd)->core_command;
2997 int n = strlen (command);
2998
2999 if (0 < n && command[n - 1] == ' ')
3000 command[n - 1] = '\0';
3001 }
3002
3003 return TRUE;
3004 }
3005
3006 /* ECOFF swapping routines. These are used when dealing with the
3007 .mdebug section, which is in the ECOFF debugging format. */
3008 static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap =
3009 {
3010 /* Symbol table magic number. */
3011 magicSym2,
3012 /* Alignment of debugging information. E.g., 4. */
3013 8,
3014 /* Sizes of external symbolic information. */
3015 sizeof (struct hdr_ext),
3016 sizeof (struct dnr_ext),
3017 sizeof (struct pdr_ext),
3018 sizeof (struct sym_ext),
3019 sizeof (struct opt_ext),
3020 sizeof (struct fdr_ext),
3021 sizeof (struct rfd_ext),
3022 sizeof (struct ext_ext),
3023 /* Functions to swap in external symbolic data. */
3024 ecoff_swap_hdr_in,
3025 ecoff_swap_dnr_in,
3026 ecoff_swap_pdr_in,
3027 ecoff_swap_sym_in,
3028 ecoff_swap_opt_in,
3029 ecoff_swap_fdr_in,
3030 ecoff_swap_rfd_in,
3031 ecoff_swap_ext_in,
3032 _bfd_ecoff_swap_tir_in,
3033 _bfd_ecoff_swap_rndx_in,
3034 /* Functions to swap out external symbolic data. */
3035 ecoff_swap_hdr_out,
3036 ecoff_swap_dnr_out,
3037 ecoff_swap_pdr_out,
3038 ecoff_swap_sym_out,
3039 ecoff_swap_opt_out,
3040 ecoff_swap_fdr_out,
3041 ecoff_swap_rfd_out,
3042 ecoff_swap_ext_out,
3043 _bfd_ecoff_swap_tir_out,
3044 _bfd_ecoff_swap_rndx_out,
3045 /* Function to read in symbolic data. */
3046 _bfd_mips_elf_read_ecoff_info
3047 };
3048
3049 /* Relocations in the 64 bit MIPS ELF ABI are more complex than in
3050 standard ELF. This structure is used to redirect the relocation
3051 handling routines. */
3052
3053 const struct elf_size_info mips_elf64_size_info =
3054 {
3055 sizeof (Elf64_External_Ehdr),
3056 sizeof (Elf64_External_Phdr),
3057 sizeof (Elf64_External_Shdr),
3058 sizeof (Elf64_Mips_External_Rel),
3059 sizeof (Elf64_Mips_External_Rela),
3060 sizeof (Elf64_External_Sym),
3061 sizeof (Elf64_External_Dyn),
3062 sizeof (Elf_External_Note),
3063 4, /* hash-table entry size */
3064 3, /* internal relocations per external relocations */
3065 64, /* arch_size */
3066 3, /* log_file_align */
3067 ELFCLASS64,
3068 EV_CURRENT,
3069 bfd_elf64_write_out_phdrs,
3070 bfd_elf64_write_shdrs_and_ehdr,
3071 mips_elf64_write_relocs,
3072 bfd_elf64_swap_symbol_in,
3073 bfd_elf64_swap_symbol_out,
3074 mips_elf64_slurp_reloc_table,
3075 bfd_elf64_slurp_symbol_table,
3076 bfd_elf64_swap_dyn_in,
3077 bfd_elf64_swap_dyn_out,
3078 mips_elf64_be_swap_reloc_in,
3079 mips_elf64_be_swap_reloc_out,
3080 mips_elf64_be_swap_reloca_in,
3081 mips_elf64_be_swap_reloca_out
3082 };
3083
3084 #define ELF_ARCH bfd_arch_mips
3085 #define ELF_MACHINE_CODE EM_MIPS
3086
3087 #define elf_backend_collect TRUE
3088 #define elf_backend_type_change_ok TRUE
3089 #define elf_backend_can_gc_sections TRUE
3090 #define elf_info_to_howto mips_elf64_info_to_howto_rela
3091 #define elf_info_to_howto_rel mips_elf64_info_to_howto_rel
3092 #define elf_backend_object_p mips_elf64_object_p
3093 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
3094 #define elf_backend_section_processing _bfd_mips_elf_section_processing
3095 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
3096 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
3097 #define elf_backend_section_from_bfd_section \
3098 _bfd_mips_elf_section_from_bfd_section
3099 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
3100 #define elf_backend_link_output_symbol_hook \
3101 _bfd_mips_elf_link_output_symbol_hook
3102 #define elf_backend_create_dynamic_sections \
3103 _bfd_mips_elf_create_dynamic_sections
3104 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
3105 #define elf_backend_merge_symbol_attribute \
3106 _bfd_mips_elf_merge_symbol_attribute
3107 #define elf_backend_adjust_dynamic_symbol \
3108 _bfd_mips_elf_adjust_dynamic_symbol
3109 #define elf_backend_always_size_sections \
3110 _bfd_mips_elf_always_size_sections
3111 #define elf_backend_size_dynamic_sections \
3112 _bfd_mips_elf_size_dynamic_sections
3113 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3114 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
3115 #define elf_backend_finish_dynamic_symbol \
3116 _bfd_mips_elf_finish_dynamic_symbol
3117 #define elf_backend_finish_dynamic_sections \
3118 _bfd_mips_elf_finish_dynamic_sections
3119 #define elf_backend_final_write_processing \
3120 _bfd_mips_elf_final_write_processing
3121 #define elf_backend_additional_program_headers \
3122 _bfd_mips_elf_additional_program_headers
3123 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
3124 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
3125 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
3126 #define elf_backend_copy_indirect_symbol \
3127 _bfd_mips_elf_copy_indirect_symbol
3128 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
3129 #define elf_backend_ignore_discarded_relocs \
3130 _bfd_mips_elf_ignore_discarded_relocs
3131 #define elf_backend_mips_irix_compat elf64_mips_irix_compat
3132 #define elf_backend_mips_rtype_to_howto mips_elf64_rtype_to_howto
3133 #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap
3134 #define elf_backend_size_info mips_elf64_size_info
3135
3136 #define elf_backend_grok_prstatus elf64_mips_grok_prstatus
3137 #define elf_backend_grok_psinfo elf64_mips_grok_psinfo
3138
3139 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
3140
3141 /* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations
3142 work better/work only in RELA, so we default to this. */
3143 #define elf_backend_may_use_rel_p 1
3144 #define elf_backend_may_use_rela_p 1
3145 #define elf_backend_default_use_rela_p 1
3146
3147 #define elf_backend_write_section _bfd_mips_elf_write_section
3148
3149 /* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit
3150 MIPS-specific function only applies to IRIX5, which had no 64-bit
3151 ABI. */
3152 #define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line
3153 #define bfd_elf64_find_inliner_info _bfd_mips_elf_find_inliner_info
3154 #define bfd_elf64_new_section_hook _bfd_mips_elf_new_section_hook
3155 #define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents
3156 #define bfd_elf64_bfd_get_relocated_section_contents \
3157 _bfd_elf_mips_get_relocated_section_contents
3158 #define bfd_elf64_bfd_link_hash_table_create \
3159 _bfd_mips_elf_link_hash_table_create
3160 #define bfd_elf64_bfd_final_link _bfd_mips_elf_final_link
3161 #define bfd_elf64_bfd_merge_private_bfd_data \
3162 _bfd_mips_elf_merge_private_bfd_data
3163 #define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags
3164 #define bfd_elf64_bfd_print_private_bfd_data \
3165 _bfd_mips_elf_print_private_bfd_data
3166
3167 #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound
3168 #define bfd_elf64_canonicalize_reloc mips_elf64_canonicalize_reloc
3169 #define bfd_elf64_get_dynamic_reloc_upper_bound mips_elf64_get_dynamic_reloc_upper_bound
3170 #define bfd_elf64_canonicalize_dynamic_reloc mips_elf64_canonicalize_dynamic_reloc
3171 #define bfd_elf64_bfd_relax_section _bfd_mips_relax_section
3172
3173 /* MIPS ELF64 archive functions. */
3174 #define bfd_elf64_archive_functions
3175 extern bfd_boolean bfd_elf64_archive_slurp_armap
3176 (bfd *);
3177 extern bfd_boolean bfd_elf64_archive_write_armap
3178 (bfd *, unsigned int, struct orl *, unsigned int, int);
3179 #define bfd_elf64_archive_slurp_extended_name_table \
3180 _bfd_archive_coff_slurp_extended_name_table
3181 #define bfd_elf64_archive_construct_extended_name_table \
3182 _bfd_archive_coff_construct_extended_name_table
3183 #define bfd_elf64_archive_truncate_arname \
3184 _bfd_archive_coff_truncate_arname
3185 #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3186 #define bfd_elf64_archive_openr_next_archived_file \
3187 _bfd_archive_coff_openr_next_archived_file
3188 #define bfd_elf64_archive_get_elt_at_index \
3189 _bfd_archive_coff_get_elt_at_index
3190 #define bfd_elf64_archive_generic_stat_arch_elt \
3191 _bfd_archive_coff_generic_stat_arch_elt
3192 #define bfd_elf64_archive_update_armap_timestamp \
3193 _bfd_archive_coff_update_armap_timestamp
3194
3195 /* The SGI style (n)64 NewABI. */
3196 #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec
3197 #define TARGET_LITTLE_NAME "elf64-littlemips"
3198 #define TARGET_BIG_SYM bfd_elf64_bigmips_vec
3199 #define TARGET_BIG_NAME "elf64-bigmips"
3200
3201 #define ELF_MAXPAGESIZE 0x10000
3202 #define ELF_COMMONPAGESIZE 0x1000
3203
3204 #include "elf64-target.h"
3205
3206 /* The SYSV-style 'traditional' (n)64 NewABI. */
3207 #undef TARGET_LITTLE_SYM
3208 #undef TARGET_LITTLE_NAME
3209 #undef TARGET_BIG_SYM
3210 #undef TARGET_BIG_NAME
3211
3212 #undef ELF_MAXPAGESIZE
3213 #undef ELF_COMMONPAGESIZE
3214
3215 #define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec
3216 #define TARGET_LITTLE_NAME "elf64-tradlittlemips"
3217 #define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec
3218 #define TARGET_BIG_NAME "elf64-tradbigmips"
3219
3220 #define ELF_MAXPAGESIZE 0x10000
3221 #define ELF_COMMONPAGESIZE 0x1000
3222 #define elf64_bed elf64_tradbed
3223
3224 /* Include the target file again for this target. */
3225 #include "elf64-target.h"
3226