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[binutils.git] / bfd / elf64-mips.c
blob34b02e47473a097614950ad87648817cee6c78b2
1 /* MIPS-specific support for 64-bit ELF
2 Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
3 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 "bfd.h"
44 #include "sysdep.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 \f
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 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
1331
1332 /* TLS general dynamic variable reference. */
1333 HOWTO (R_MIPS_TLS_GD, /* type */
1334 0, /* rightshift */
1335 2, /* size (0 = byte, 1 = short, 2 = long) */
1336 16, /* bitsize */
1337 FALSE, /* pc_relative */
1338 0, /* bitpos */
1339 complain_overflow_signed, /* complain_on_overflow */
1340 _bfd_mips_elf_generic_reloc, /* special_function */
1341 "R_MIPS_TLS_GD", /* name */
1342 TRUE, /* partial_inplace */
1343 0x0000ffff, /* src_mask */
1344 0x0000ffff, /* dst_mask */
1345 FALSE), /* pcrel_offset */
1346
1347 /* TLS local dynamic variable reference. */
1348 HOWTO (R_MIPS_TLS_LDM, /* type */
1349 0, /* rightshift */
1350 2, /* size (0 = byte, 1 = short, 2 = long) */
1351 16, /* bitsize */
1352 FALSE, /* pc_relative */
1353 0, /* bitpos */
1354 complain_overflow_signed, /* complain_on_overflow */
1355 _bfd_mips_elf_generic_reloc, /* special_function */
1356 "R_MIPS_TLS_LDM", /* name */
1357 TRUE, /* partial_inplace */
1358 0x0000ffff, /* src_mask */
1359 0x0000ffff, /* dst_mask */
1360 FALSE), /* pcrel_offset */
1361
1362 /* TLS local dynamic offset. */
1363 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
1364 0, /* rightshift */
1365 2, /* size (0 = byte, 1 = short, 2 = long) */
1366 16, /* bitsize */
1367 FALSE, /* pc_relative */
1368 0, /* bitpos */
1369 complain_overflow_signed, /* complain_on_overflow */
1370 _bfd_mips_elf_generic_reloc, /* special_function */
1371 "R_MIPS_TLS_DTPREL_HI16", /* name */
1372 TRUE, /* partial_inplace */
1373 0x0000ffff, /* src_mask */
1374 0x0000ffff, /* dst_mask */
1375 FALSE), /* pcrel_offset */
1376
1377 /* TLS local dynamic offset. */
1378 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
1379 0, /* rightshift */
1380 2, /* size (0 = byte, 1 = short, 2 = long) */
1381 16, /* bitsize */
1382 FALSE, /* pc_relative */
1383 0, /* bitpos */
1384 complain_overflow_signed, /* complain_on_overflow */
1385 _bfd_mips_elf_generic_reloc, /* special_function */
1386 "R_MIPS_TLS_DTPREL_LO16", /* name */
1387 TRUE, /* partial_inplace */
1388 0x0000ffff, /* src_mask */
1389 0x0000ffff, /* dst_mask */
1390 FALSE), /* pcrel_offset */
1391
1392 /* TLS thread pointer offset. */
1393 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
1394 0, /* rightshift */
1395 2, /* size (0 = byte, 1 = short, 2 = long) */
1396 16, /* bitsize */
1397 FALSE, /* pc_relative */
1398 0, /* bitpos */
1399 complain_overflow_signed, /* complain_on_overflow */
1400 _bfd_mips_elf_generic_reloc, /* special_function */
1401 "R_MIPS_TLS_GOTTPREL", /* name */
1402 TRUE, /* partial_inplace */
1403 0x0000ffff, /* src_mask */
1404 0x0000ffff, /* dst_mask */
1405 FALSE), /* pcrel_offset */
1406
1407 EMPTY_HOWTO (R_MIPS_TLS_TPREL32),
1408 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
1409
1410 /* TLS thread pointer offset. */
1411 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
1412 0, /* rightshift */
1413 2, /* size (0 = byte, 1 = short, 2 = long) */
1414 16, /* bitsize */
1415 FALSE, /* pc_relative */
1416 0, /* bitpos */
1417 complain_overflow_signed, /* complain_on_overflow */
1418 _bfd_mips_elf_generic_reloc, /* special_function */
1419 "R_MIPS_TLS_TPREL_HI16", /* name */
1420 TRUE, /* partial_inplace */
1421 0x0000ffff, /* src_mask */
1422 0x0000ffff, /* dst_mask */
1423 FALSE), /* pcrel_offset */
1424
1425 /* TLS thread pointer offset. */
1426 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
1427 0, /* rightshift */
1428 2, /* size (0 = byte, 1 = short, 2 = long) */
1429 16, /* bitsize */
1430 FALSE, /* pc_relative */
1431 0, /* bitpos */
1432 complain_overflow_signed, /* complain_on_overflow */
1433 _bfd_mips_elf_generic_reloc, /* special_function */
1434 "R_MIPS_TLS_TPREL_LO16", /* name */
1435 TRUE, /* partial_inplace */
1436 0x0000ffff, /* src_mask */
1437 0x0000ffff, /* dst_mask */
1438 FALSE), /* pcrel_offset */
1439
1440 /* 32 bit relocation with no addend. */
1441 HOWTO (R_MIPS_GLOB_DAT, /* type */
1442 0, /* rightshift */
1443 2, /* size (0 = byte, 1 = short, 2 = long) */
1444 32, /* bitsize */
1445 FALSE, /* pc_relative */
1446 0, /* bitpos */
1447 complain_overflow_dont, /* complain_on_overflow */
1448 _bfd_mips_elf_generic_reloc, /* special_function */
1449 "R_MIPS_GLOB_DAT", /* name */
1450 FALSE, /* partial_inplace */
1451 0x0, /* src_mask */
1452 0xffffffff, /* dst_mask */
1453 FALSE), /* pcrel_offset */
1454 };
1455
1456 static reloc_howto_type mips16_elf64_howto_table_rel[] =
1457 {
1458 /* The reloc used for the mips16 jump instruction. */
1459 HOWTO (R_MIPS16_26, /* type */
1460 2, /* rightshift */
1461 2, /* size (0 = byte, 1 = short, 2 = long) */
1462 26, /* bitsize */
1463 FALSE, /* pc_relative */
1464 0, /* bitpos */
1465 complain_overflow_dont, /* complain_on_overflow */
1466 /* This needs complex overflow
1467 detection, because the upper four
1468 bits must match the PC. */
1469 _bfd_mips_elf_generic_reloc, /* special_function */
1470 "R_MIPS16_26", /* name */
1471 TRUE, /* partial_inplace */
1472 0x3ffffff, /* src_mask */
1473 0x3ffffff, /* dst_mask */
1474 FALSE), /* pcrel_offset */
1475
1476 /* The reloc used for the mips16 gprel instruction. */
1477 HOWTO (R_MIPS16_GPREL, /* type */
1478 0, /* rightshift */
1479 2, /* size (0 = byte, 1 = short, 2 = long) */
1480 16, /* bitsize */
1481 FALSE, /* pc_relative */
1482 0, /* bitpos */
1483 complain_overflow_signed, /* complain_on_overflow */
1484 mips16_gprel_reloc, /* special_function */
1485 "R_MIPS16_GPREL", /* name */
1486 TRUE, /* partial_inplace */
1487 0x0000ffff, /* src_mask */
1488 0x0000ffff, /* dst_mask */
1489 FALSE), /* pcrel_offset */
1490
1491 /* A placeholder for MIPS16 reference to global offset table. */
1492 EMPTY_HOWTO (R_MIPS16_GOT16),
1493
1494 /* A placeholder for MIPS16 16 bit call through global offset table. */
1495 EMPTY_HOWTO (R_MIPS16_CALL16),
1496
1497 /* MIPS16 high 16 bits of symbol value. */
1498 HOWTO (R_MIPS16_HI16, /* type */
1499 16, /* rightshift */
1500 2, /* size (0 = byte, 1 = short, 2 = long) */
1501 16, /* bitsize */
1502 FALSE, /* pc_relative */
1503 0, /* bitpos */
1504 complain_overflow_dont, /* complain_on_overflow */
1505 _bfd_mips_elf_hi16_reloc, /* special_function */
1506 "R_MIPS16_HI16", /* name */
1507 TRUE, /* partial_inplace */
1508 0x0000ffff, /* src_mask */
1509 0x0000ffff, /* dst_mask */
1510 FALSE), /* pcrel_offset */
1511
1512 /* MIPS16 low 16 bits of symbol value. */
1513 HOWTO (R_MIPS16_LO16, /* type */
1514 0, /* rightshift */
1515 2, /* size (0 = byte, 1 = short, 2 = long) */
1516 16, /* bitsize */
1517 FALSE, /* pc_relative */
1518 0, /* bitpos */
1519 complain_overflow_dont, /* complain_on_overflow */
1520 _bfd_mips_elf_lo16_reloc, /* special_function */
1521 "R_MIPS16_LO16", /* name */
1522 TRUE, /* partial_inplace */
1523 0x0000ffff, /* src_mask */
1524 0x0000ffff, /* dst_mask */
1525 FALSE), /* pcrel_offset */
1526 };
1527
1528 static reloc_howto_type mips16_elf64_howto_table_rela[] =
1529 {
1530 /* The reloc used for the mips16 jump instruction. */
1531 HOWTO (R_MIPS16_26, /* type */
1532 2, /* rightshift */
1533 2, /* size (0 = byte, 1 = short, 2 = long) */
1534 26, /* bitsize */
1535 FALSE, /* pc_relative */
1536 0, /* bitpos */
1537 complain_overflow_dont, /* complain_on_overflow */
1538 /* This needs complex overflow
1539 detection, because the upper four
1540 bits must match the PC. */
1541 _bfd_mips_elf_generic_reloc, /* special_function */
1542 "R_MIPS16_26", /* name */
1543 FALSE, /* partial_inplace */
1544 0x3ffffff, /* src_mask */
1545 0x3ffffff, /* dst_mask */
1546 FALSE), /* pcrel_offset */
1547
1548 /* The reloc used for the mips16 gprel instruction. */
1549 HOWTO (R_MIPS16_GPREL, /* type */
1550 0, /* rightshift */
1551 2, /* size (0 = byte, 1 = short, 2 = long) */
1552 16, /* bitsize */
1553 FALSE, /* pc_relative */
1554 0, /* bitpos */
1555 complain_overflow_signed, /* complain_on_overflow */
1556 mips16_gprel_reloc, /* special_function */
1557 "R_MIPS16_GPREL", /* name */
1558 FALSE, /* partial_inplace */
1559 0x0000ffff, /* src_mask */
1560 0x0000ffff, /* dst_mask */
1561 FALSE), /* pcrel_offset */
1562
1563 /* A placeholder for MIPS16 reference to global offset table. */
1564 EMPTY_HOWTO (R_MIPS16_GOT16),
1565
1566 /* A placeholder for MIPS16 16 bit call through global offset table. */
1567 EMPTY_HOWTO (R_MIPS16_CALL16),
1568
1569 /* MIPS16 high 16 bits of symbol value. */
1570 HOWTO (R_MIPS16_HI16, /* type */
1571 16, /* rightshift */
1572 2, /* size (0 = byte, 1 = short, 2 = long) */
1573 16, /* bitsize */
1574 FALSE, /* pc_relative */
1575 0, /* bitpos */
1576 complain_overflow_dont, /* complain_on_overflow */
1577 _bfd_mips_elf_hi16_reloc, /* special_function */
1578 "R_MIPS16_HI16", /* name */
1579 FALSE, /* partial_inplace */
1580 0x0000ffff, /* src_mask */
1581 0x0000ffff, /* dst_mask */
1582 FALSE), /* pcrel_offset */
1583
1584 /* MIPS16 low 16 bits of symbol value. */
1585 HOWTO (R_MIPS16_LO16, /* type */
1586 0, /* rightshift */
1587 2, /* size (0 = byte, 1 = short, 2 = long) */
1588 16, /* bitsize */
1589 FALSE, /* pc_relative */
1590 0, /* bitpos */
1591 complain_overflow_dont, /* complain_on_overflow */
1592 _bfd_mips_elf_lo16_reloc, /* special_function */
1593 "R_MIPS16_LO16", /* name */
1594 FALSE, /* partial_inplace */
1595 0x0000ffff, /* src_mask */
1596 0x0000ffff, /* dst_mask */
1597 FALSE), /* pcrel_offset */
1598 };
1599
1600 /* GNU extension to record C++ vtable hierarchy */
1601 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1602 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1603 0, /* rightshift */
1604 2, /* size (0 = byte, 1 = short, 2 = long) */
1605 0, /* bitsize */
1606 FALSE, /* pc_relative */
1607 0, /* bitpos */
1608 complain_overflow_dont, /* complain_on_overflow */
1609 NULL, /* special_function */
1610 "R_MIPS_GNU_VTINHERIT", /* name */
1611 FALSE, /* partial_inplace */
1612 0, /* src_mask */
1613 0, /* dst_mask */
1614 FALSE); /* pcrel_offset */
1615
1616 /* GNU extension to record C++ vtable member usage */
1617 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1618 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1619 0, /* rightshift */
1620 2, /* size (0 = byte, 1 = short, 2 = long) */
1621 0, /* bitsize */
1622 FALSE, /* pc_relative */
1623 0, /* bitpos */
1624 complain_overflow_dont, /* complain_on_overflow */
1625 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1626 "R_MIPS_GNU_VTENTRY", /* name */
1627 FALSE, /* partial_inplace */
1628 0, /* src_mask */
1629 0, /* dst_mask */
1630 FALSE); /* pcrel_offset */
1631 \f
1632 /* 16 bit offset for pc-relative branches. */
1633 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1634 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1635 2, /* rightshift */
1636 2, /* size (0 = byte, 1 = short, 2 = long) */
1637 16, /* bitsize */
1638 TRUE, /* pc_relative */
1639 0, /* bitpos */
1640 complain_overflow_signed, /* complain_on_overflow */
1641 _bfd_mips_elf_generic_reloc, /* special_function */
1642 "R_MIPS_GNU_REL16_S2", /* name */
1643 TRUE, /* partial_inplace */
1644 0x0000ffff, /* src_mask */
1645 0x0000ffff, /* dst_mask */
1646 TRUE); /* pcrel_offset */
1647
1648 /* 16 bit offset for pc-relative branches. */
1649 static reloc_howto_type elf_mips_gnu_rela16_s2 =
1650 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1651 2, /* rightshift */
1652 2, /* size (0 = byte, 1 = short, 2 = long) */
1653 16, /* bitsize */
1654 TRUE, /* pc_relative */
1655 0, /* bitpos */
1656 complain_overflow_signed, /* complain_on_overflow */
1657 _bfd_mips_elf_generic_reloc, /* special_function */
1658 "R_MIPS_GNU_REL16_S2", /* name */
1659 FALSE, /* partial_inplace */
1660 0, /* src_mask */
1661 0x0000ffff, /* dst_mask */
1662 TRUE); /* pcrel_offset */
1663 \f
1664 /* Swap in a MIPS 64-bit Rel reloc. */
1665
1666 static void
1667 mips_elf64_swap_reloc_in (bfd *abfd, const Elf64_Mips_External_Rel *src,
1668 Elf64_Mips_Internal_Rela *dst)
1669 {
1670 dst->r_offset = H_GET_64 (abfd, src->r_offset);
1671 dst->r_sym = H_GET_32 (abfd, src->r_sym);
1672 dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
1673 dst->r_type3 = H_GET_8 (abfd, src->r_type3);
1674 dst->r_type2 = H_GET_8 (abfd, src->r_type2);
1675 dst->r_type = H_GET_8 (abfd, src->r_type);
1676 dst->r_addend = 0;
1677 }
1678
1679 /* Swap in a MIPS 64-bit Rela reloc. */
1680
1681 static void
1682 mips_elf64_swap_reloca_in (bfd *abfd, const Elf64_Mips_External_Rela *src,
1683 Elf64_Mips_Internal_Rela *dst)
1684 {
1685 dst->r_offset = H_GET_64 (abfd, src->r_offset);
1686 dst->r_sym = H_GET_32 (abfd, src->r_sym);
1687 dst->r_ssym = H_GET_8 (abfd, src->r_ssym);
1688 dst->r_type3 = H_GET_8 (abfd, src->r_type3);
1689 dst->r_type2 = H_GET_8 (abfd, src->r_type2);
1690 dst->r_type = H_GET_8 (abfd, src->r_type);
1691 dst->r_addend = H_GET_S64 (abfd, src->r_addend);
1692 }
1693
1694 /* Swap out a MIPS 64-bit Rel reloc. */
1695
1696 static void
1697 mips_elf64_swap_reloc_out (bfd *abfd, const Elf64_Mips_Internal_Rela *src,
1698 Elf64_Mips_External_Rel *dst)
1699 {
1700 H_PUT_64 (abfd, src->r_offset, dst->r_offset);
1701 H_PUT_32 (abfd, src->r_sym, dst->r_sym);
1702 H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
1703 H_PUT_8 (abfd, src->r_type3, dst->r_type3);
1704 H_PUT_8 (abfd, src->r_type2, dst->r_type2);
1705 H_PUT_8 (abfd, src->r_type, dst->r_type);
1706 }
1707
1708 /* Swap out a MIPS 64-bit Rela reloc. */
1709
1710 static void
1711 mips_elf64_swap_reloca_out (bfd *abfd, const Elf64_Mips_Internal_Rela *src,
1712 Elf64_Mips_External_Rela *dst)
1713 {
1714 H_PUT_64 (abfd, src->r_offset, dst->r_offset);
1715 H_PUT_32 (abfd, src->r_sym, dst->r_sym);
1716 H_PUT_8 (abfd, src->r_ssym, dst->r_ssym);
1717 H_PUT_8 (abfd, src->r_type3, dst->r_type3);
1718 H_PUT_8 (abfd, src->r_type2, dst->r_type2);
1719 H_PUT_8 (abfd, src->r_type, dst->r_type);
1720 H_PUT_S64 (abfd, src->r_addend, dst->r_addend);
1721 }
1722
1723 /* Swap in a MIPS 64-bit Rel reloc. */
1724
1725 static void
1726 mips_elf64_be_swap_reloc_in (bfd *abfd, const bfd_byte *src,
1727 Elf_Internal_Rela *dst)
1728 {
1729 Elf64_Mips_Internal_Rela mirel;
1730
1731 mips_elf64_swap_reloc_in (abfd,
1732 (const Elf64_Mips_External_Rel *) src,
1733 &mirel);
1734
1735 dst[0].r_offset = mirel.r_offset;
1736 dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type);
1737 dst[0].r_addend = 0;
1738 dst[1].r_offset = mirel.r_offset;
1739 dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2);
1740 dst[1].r_addend = 0;
1741 dst[2].r_offset = mirel.r_offset;
1742 dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3);
1743 dst[2].r_addend = 0;
1744 }
1745
1746 /* Swap in a MIPS 64-bit Rela reloc. */
1747
1748 static void
1749 mips_elf64_be_swap_reloca_in (bfd *abfd, const bfd_byte *src,
1750 Elf_Internal_Rela *dst)
1751 {
1752 Elf64_Mips_Internal_Rela mirela;
1753
1754 mips_elf64_swap_reloca_in (abfd,
1755 (const Elf64_Mips_External_Rela *) src,
1756 &mirela);
1757
1758 dst[0].r_offset = mirela.r_offset;
1759 dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type);
1760 dst[0].r_addend = mirela.r_addend;
1761 dst[1].r_offset = mirela.r_offset;
1762 dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2);
1763 dst[1].r_addend = 0;
1764 dst[2].r_offset = mirela.r_offset;
1765 dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3);
1766 dst[2].r_addend = 0;
1767 }
1768
1769 /* Swap out a MIPS 64-bit Rel reloc. */
1770
1771 static void
1772 mips_elf64_be_swap_reloc_out (bfd *abfd, const Elf_Internal_Rela *src,
1773 bfd_byte *dst)
1774 {
1775 Elf64_Mips_Internal_Rela mirel;
1776
1777 mirel.r_offset = src[0].r_offset;
1778 BFD_ASSERT(src[0].r_offset == src[1].r_offset);
1779
1780 mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
1781 mirel.r_sym = ELF64_R_SYM (src[0].r_info);
1782 mirel.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
1783 mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
1784 mirel.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
1785
1786 mips_elf64_swap_reloc_out (abfd, &mirel,
1787 (Elf64_Mips_External_Rel *) dst);
1788 }
1789
1790 /* Swap out a MIPS 64-bit Rela reloc. */
1791
1792 static void
1793 mips_elf64_be_swap_reloca_out (bfd *abfd, const Elf_Internal_Rela *src,
1794 bfd_byte *dst)
1795 {
1796 Elf64_Mips_Internal_Rela mirela;
1797
1798 mirela.r_offset = src[0].r_offset;
1799 BFD_ASSERT(src[0].r_offset == src[1].r_offset);
1800 BFD_ASSERT(src[0].r_offset == src[2].r_offset);
1801
1802 mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info);
1803 mirela.r_sym = ELF64_R_SYM (src[0].r_info);
1804 mirela.r_addend = src[0].r_addend;
1805 BFD_ASSERT(src[1].r_addend == 0);
1806 BFD_ASSERT(src[2].r_addend == 0);
1807
1808 mirela.r_type2 = ELF64_MIPS_R_TYPE (src[1].r_info);
1809 mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info);
1810 mirela.r_type3 = ELF64_MIPS_R_TYPE (src[2].r_info);
1811
1812 mips_elf64_swap_reloca_out (abfd, &mirela,
1813 (Elf64_Mips_External_Rela *) dst);
1814 }
1815 \f
1816 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
1817 dangerous relocation. */
1818
1819 static bfd_boolean
1820 mips_elf64_assign_gp (bfd *output_bfd, bfd_vma *pgp)
1821 {
1822 unsigned int count;
1823 asymbol **sym;
1824 unsigned int i;
1825
1826 /* If we've already figured out what GP will be, just return it. */
1827 *pgp = _bfd_get_gp_value (output_bfd);
1828 if (*pgp)
1829 return TRUE;
1830
1831 count = bfd_get_symcount (output_bfd);
1832 sym = bfd_get_outsymbols (output_bfd);
1833
1834 /* The linker script will have created a symbol named `_gp' with the
1835 appropriate value. */
1836 if (sym == NULL)
1837 i = count;
1838 else
1839 {
1840 for (i = 0; i < count; i++, sym++)
1841 {
1842 register const char *name;
1843
1844 name = bfd_asymbol_name (*sym);
1845 if (*name == '_' && strcmp (name, "_gp") == 0)
1846 {
1847 *pgp = bfd_asymbol_value (*sym);
1848 _bfd_set_gp_value (output_bfd, *pgp);
1849 break;
1850 }
1851 }
1852 }
1853
1854 if (i >= count)
1855 {
1856 /* Only get the error once. */
1857 *pgp = 4;
1858 _bfd_set_gp_value (output_bfd, *pgp);
1859 return FALSE;
1860 }
1861
1862 return TRUE;
1863 }
1864
1865 /* We have to figure out the gp value, so that we can adjust the
1866 symbol value correctly. We look up the symbol _gp in the output
1867 BFD. If we can't find it, we're stuck. We cache it in the ELF
1868 target data. We don't need to adjust the symbol value for an
1869 external symbol if we are producing relocatable output. */
1870
1871 static bfd_reloc_status_type
1872 mips_elf64_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
1873 char **error_message, bfd_vma *pgp)
1874 {
1875 if (bfd_is_und_section (symbol->section)
1876 && ! relocatable)
1877 {
1878 *pgp = 0;
1879 return bfd_reloc_undefined;
1880 }
1881
1882 *pgp = _bfd_get_gp_value (output_bfd);
1883 if (*pgp == 0
1884 && (! relocatable
1885 || (symbol->flags & BSF_SECTION_SYM) != 0))
1886 {
1887 if (relocatable)
1888 {
1889 /* Make up a value. */
1890 *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
1891 _bfd_set_gp_value (output_bfd, *pgp);
1892 }
1893 else if (!mips_elf64_assign_gp (output_bfd, pgp))
1894 {
1895 *error_message =
1896 (char *) _("GP relative relocation when _gp not defined");
1897 return bfd_reloc_dangerous;
1898 }
1899 }
1900
1901 return bfd_reloc_ok;
1902 }
1903
1904 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1905 become the offset from the gp register. */
1906
1907 static bfd_reloc_status_type
1908 mips_elf64_gprel16_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1909 void *data, asection *input_section, bfd *output_bfd,
1910 char **error_message)
1911 {
1912 bfd_boolean relocatable;
1913 bfd_reloc_status_type ret;
1914 bfd_vma gp;
1915
1916 /* If we're relocating, and this is an external symbol, we don't want
1917 to change anything. */
1918 if (output_bfd != NULL
1919 && (symbol->flags & BSF_SECTION_SYM) == 0
1920 && (symbol->flags & BSF_LOCAL) != 0)
1921 {
1922 reloc_entry->address += input_section->output_offset;
1923 return bfd_reloc_ok;
1924 }
1925
1926 if (output_bfd != NULL)
1927 relocatable = TRUE;
1928 else
1929 {
1930 relocatable = FALSE;
1931 output_bfd = symbol->section->output_section->owner;
1932 }
1933
1934 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
1935 &gp);
1936 if (ret != bfd_reloc_ok)
1937 return ret;
1938
1939 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1940 input_section, relocatable,
1941 data, gp);
1942 }
1943
1944 /* Do a R_MIPS_LITERAL relocation. */
1945
1946 static bfd_reloc_status_type
1947 mips_elf64_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1948 void *data, asection *input_section, bfd *output_bfd,
1949 char **error_message)
1950 {
1951 bfd_boolean relocatable;
1952 bfd_reloc_status_type ret;
1953 bfd_vma gp;
1954
1955 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1956 if (output_bfd != NULL
1957 && (symbol->flags & BSF_SECTION_SYM) == 0
1958 && (symbol->flags & BSF_LOCAL) != 0)
1959 {
1960 *error_message = (char *)
1961 _("literal relocation occurs for an external symbol");
1962 return bfd_reloc_outofrange;
1963 }
1964
1965 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
1966 if (output_bfd != NULL)
1967 relocatable = TRUE;
1968 else
1969 {
1970 relocatable = FALSE;
1971 output_bfd = symbol->section->output_section->owner;
1972 }
1973
1974 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
1975 &gp);
1976 if (ret != bfd_reloc_ok)
1977 return ret;
1978
1979 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1980 input_section, relocatable,
1981 data, gp);
1982 }
1983
1984 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1985 become the offset from the gp register. */
1986
1987 static bfd_reloc_status_type
1988 mips_elf64_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1989 void *data, asection *input_section, bfd *output_bfd,
1990 char **error_message)
1991 {
1992 bfd_boolean relocatable;
1993 bfd_reloc_status_type ret;
1994 bfd_vma gp;
1995 bfd_vma relocation;
1996 bfd_vma val;
1997
1998 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1999 if (output_bfd != NULL
2000 && (symbol->flags & BSF_SECTION_SYM) == 0
2001 && (symbol->flags & BSF_LOCAL) != 0)
2002 {
2003 *error_message = (char *)
2004 _("32bits gp relative relocation occurs for an external symbol");
2005 return bfd_reloc_outofrange;
2006 }
2007
2008 if (output_bfd != NULL)
2009 relocatable = TRUE;
2010 else
2011 {
2012 relocatable = FALSE;
2013 output_bfd = symbol->section->output_section->owner;
2014 }
2015
2016 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable,
2017 error_message, &gp);
2018 if (ret != bfd_reloc_ok)
2019 return ret;
2020
2021 if (bfd_is_com_section (symbol->section))
2022 relocation = 0;
2023 else
2024 relocation = symbol->value;
2025
2026 relocation += symbol->section->output_section->vma;
2027 relocation += symbol->section->output_offset;
2028
2029 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
2030 return bfd_reloc_outofrange;
2031
2032 /* Set val to the offset into the section or symbol. */
2033 val = reloc_entry->addend;
2034
2035 if (reloc_entry->howto->partial_inplace)
2036 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
2037
2038 /* Adjust val for the final section location and GP value. If we
2039 are producing relocatable output, we don't want to do this for
2040 an external symbol. */
2041 if (! relocatable
2042 || (symbol->flags & BSF_SECTION_SYM) != 0)
2043 val += relocation - gp;
2044
2045 if (reloc_entry->howto->partial_inplace)
2046 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
2047 else
2048 reloc_entry->addend = val;
2049
2050 if (relocatable)
2051 reloc_entry->address += input_section->output_offset;
2052
2053 return bfd_reloc_ok;
2054 }
2055
2056 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
2057 the rest is at bits 6-10. The bitpos already got right by the howto. */
2058
2059 static bfd_reloc_status_type
2060 mips_elf64_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2061 void *data, asection *input_section, bfd *output_bfd,
2062 char **error_message)
2063 {
2064 if (reloc_entry->howto->partial_inplace)
2065 {
2066 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0)
2067 | (reloc_entry->addend & 0x00000800) >> 9);
2068 }
2069
2070 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
2071 input_section, output_bfd,
2072 error_message);
2073 }
2074
2075 /* Handle a mips16 GP relative reloc. */
2076
2077 static bfd_reloc_status_type
2078 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
2079 void *data, asection *input_section, bfd *output_bfd,
2080 char **error_message)
2081 {
2082 bfd_boolean relocatable;
2083 bfd_reloc_status_type ret;
2084 bfd_byte *location;
2085 bfd_vma gp;
2086
2087 /* If we're relocating, and this is an external symbol, we don't want
2088 to change anything. */
2089 if (output_bfd != NULL
2090 && (symbol->flags & BSF_SECTION_SYM) == 0
2091 && (symbol->flags & BSF_LOCAL) != 0)
2092 {
2093 reloc_entry->address += input_section->output_offset;
2094 return bfd_reloc_ok;
2095 }
2096
2097 if (output_bfd != NULL)
2098 relocatable = TRUE;
2099 else
2100 {
2101 relocatable = FALSE;
2102 output_bfd = symbol->section->output_section->owner;
2103 }
2104
2105 ret = mips_elf64_final_gp (output_bfd, symbol, relocatable, error_message,
2106 &gp);
2107 if (ret != bfd_reloc_ok)
2108 return ret;
2109
2110 location = (bfd_byte *) data + reloc_entry->address;
2111 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
2112 location);
2113 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
2114 input_section, relocatable,
2115 data, gp);
2116 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
2117 location);
2118
2119 return ret;
2120 }
2121 \f
2122 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
2123
2124 struct elf_reloc_map {
2125 bfd_reloc_code_real_type bfd_val;
2126 enum elf_mips_reloc_type elf_val;
2127 };
2128
2129 static const struct elf_reloc_map mips_reloc_map[] =
2130 {
2131 { BFD_RELOC_NONE, R_MIPS_NONE },
2132 { BFD_RELOC_16, R_MIPS_16 },
2133 { BFD_RELOC_32, R_MIPS_32 },
2134 /* There is no BFD reloc for R_MIPS_REL32. */
2135 { BFD_RELOC_64, R_MIPS_64 },
2136 { BFD_RELOC_CTOR, R_MIPS_64 },
2137 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
2138 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
2139 { BFD_RELOC_LO16, R_MIPS_LO16 },
2140 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
2141 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
2142 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
2143 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
2144 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
2145 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
2146 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
2147 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
2148 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
2149 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
2150 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
2151 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
2152 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
2153 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
2154 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
2155 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
2156 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
2157 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
2158 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
2159 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
2160 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
2161 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
2162 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
2163 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
2164 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
2165 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR },
2166 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
2167 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
2168 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
2169 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
2170 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
2171 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
2172 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
2173 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
2174 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
2175 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
2176 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
2177 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
2178 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
2179 };
2180
2181 static const struct elf_reloc_map mips16_reloc_map[] =
2182 {
2183 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
2184 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
2185 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
2186 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
2187 };
2188
2189 /* Given a BFD reloc type, return a howto structure. */
2190
2191 static reloc_howto_type *
2192 bfd_elf64_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2193 bfd_reloc_code_real_type code)
2194 {
2195 unsigned int i;
2196 /* FIXME: We default to RELA here instead of choosing the right
2197 relocation variant. */
2198 reloc_howto_type *howto_table = mips_elf64_howto_table_rela;
2199 reloc_howto_type *howto16_table = mips16_elf64_howto_table_rela;
2200
2201 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
2202 i++)
2203 {
2204 if (mips_reloc_map[i].bfd_val == code)
2205 return &howto_table[(int) mips_reloc_map[i].elf_val];
2206 }
2207
2208 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
2209 i++)
2210 {
2211 if (mips16_reloc_map[i].bfd_val == code)
2212 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
2213 }
2214
2215 switch (code)
2216 {
2217 case BFD_RELOC_VTABLE_INHERIT:
2218 return &elf_mips_gnu_vtinherit_howto;
2219 case BFD_RELOC_VTABLE_ENTRY:
2220 return &elf_mips_gnu_vtentry_howto;
2221 default:
2222 bfd_set_error (bfd_error_bad_value);
2223 return NULL;
2224 }
2225 }
2226
2227 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2228
2229 static reloc_howto_type *
2230 mips_elf64_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
2231 {
2232 switch (r_type)
2233 {
2234 case R_MIPS_GNU_VTINHERIT:
2235 return &elf_mips_gnu_vtinherit_howto;
2236 case R_MIPS_GNU_VTENTRY:
2237 return &elf_mips_gnu_vtentry_howto;
2238 case R_MIPS_GNU_REL16_S2:
2239 if (rela_p)
2240 return &elf_mips_gnu_rela16_s2;
2241 else
2242 return &elf_mips_gnu_rel16_s2;
2243 default:
2244 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
2245 {
2246 if (rela_p)
2247 return &mips16_elf64_howto_table_rela[r_type - R_MIPS16_min];
2248 else
2249 return &mips16_elf64_howto_table_rel[r_type - R_MIPS16_min];
2250 }
2251 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
2252 if (rela_p)
2253 return &mips_elf64_howto_table_rela[r_type];
2254 else
2255 return &mips_elf64_howto_table_rel[r_type];
2256 break;
2257 }
2258 }
2259
2260 /* Prevent relocation handling by bfd for MIPS ELF64. */
2261
2262 static void
2263 mips_elf64_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
2264 arelent *cache_ptr ATTRIBUTE_UNUSED,
2265 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
2266 {
2267 BFD_ASSERT (0);
2268 }
2269
2270 static void
2271 mips_elf64_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
2272 arelent *cache_ptr ATTRIBUTE_UNUSED,
2273 Elf_Internal_Rela *dst ATTRIBUTE_UNUSED)
2274 {
2275 BFD_ASSERT (0);
2276 }
2277
2278 /* Since each entry in an SHT_REL or SHT_RELA section can represent up
2279 to three relocs, we must tell the user to allocate more space. */
2280
2281 static long
2282 mips_elf64_get_reloc_upper_bound (bfd *abfd ATTRIBUTE_UNUSED, asection *sec)
2283 {
2284 return (sec->reloc_count * 3 + 1) * sizeof (arelent *);
2285 }
2286
2287 static long
2288 mips_elf64_get_dynamic_reloc_upper_bound (bfd *abfd)
2289 {
2290 return _bfd_elf_get_dynamic_reloc_upper_bound (abfd) * 3;
2291 }
2292
2293 /* We must also copy more relocations than the corresponding functions
2294 in elf.c would, so the two following functions are slightly
2295 modified from elf.c, that multiply the external relocation count by
2296 3 to obtain the internal relocation count. */
2297
2298 static long
2299 mips_elf64_canonicalize_reloc (bfd *abfd, sec_ptr section,
2300 arelent **relptr, asymbol **symbols)
2301 {
2302 arelent *tblptr;
2303 unsigned int i;
2304 const struct elf_backend_data *bed = get_elf_backend_data (abfd);
2305
2306 if (! bed->s->slurp_reloc_table (abfd, section, symbols, FALSE))
2307 return -1;
2308
2309 tblptr = section->relocation;
2310 for (i = 0; i < section->reloc_count * 3; i++)
2311 *relptr++ = tblptr++;
2312
2313 *relptr = NULL;
2314
2315 return section->reloc_count * 3;
2316 }
2317
2318 static long
2319 mips_elf64_canonicalize_dynamic_reloc (bfd *abfd, arelent **storage,
2320 asymbol **syms)
2321 {
2322 bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
2323 asection *s;
2324 long ret;
2325
2326 if (elf_dynsymtab (abfd) == 0)
2327 {
2328 bfd_set_error (bfd_error_invalid_operation);
2329 return -1;
2330 }
2331
2332 slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
2333 ret = 0;
2334 for (s = abfd->sections; s != NULL; s = s->next)
2335 {
2336 if (elf_section_data (s)->this_hdr.sh_link == elf_dynsymtab (abfd)
2337 && (elf_section_data (s)->this_hdr.sh_type == SHT_REL
2338 || elf_section_data (s)->this_hdr.sh_type == SHT_RELA))
2339 {
2340 arelent *p;
2341 long count, i;
2342
2343 if (! (*slurp_relocs) (abfd, s, syms, TRUE))
2344 return -1;
2345 count = s->size / elf_section_data (s)->this_hdr.sh_entsize * 3;
2346 p = s->relocation;
2347 for (i = 0; i < count; i++)
2348 *storage++ = p++;
2349 ret += count;
2350 }
2351 }
2352
2353 *storage = NULL;
2354
2355 return ret;
2356 }
2357
2358 /* Read the relocations from one reloc section. This is mostly copied
2359 from elfcode.h, except for the changes to expand one external
2360 relocation to 3 internal ones. We must unfortunately set
2361 reloc_count to the number of external relocations, because a lot of
2362 generic code seems to depend on this. */
2363
2364 static bfd_boolean
2365 mips_elf64_slurp_one_reloc_table (bfd *abfd, asection *asect,
2366 Elf_Internal_Shdr *rel_hdr,
2367 bfd_size_type reloc_count,
2368 arelent *relents, asymbol **symbols,
2369 bfd_boolean dynamic)
2370 {
2371 void *allocated;
2372 bfd_byte *native_relocs;
2373 arelent *relent;
2374 bfd_vma i;
2375 int entsize;
2376 bfd_boolean rela_p;
2377
2378 allocated = bfd_malloc (rel_hdr->sh_size);
2379 if (allocated == NULL)
2380 return FALSE;
2381
2382 if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0
2383 || (bfd_bread (allocated, rel_hdr->sh_size, abfd)
2384 != rel_hdr->sh_size))
2385 goto error_return;
2386
2387 native_relocs = allocated;
2388
2389 entsize = rel_hdr->sh_entsize;
2390 BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel)
2391 || entsize == sizeof (Elf64_Mips_External_Rela));
2392
2393 if (entsize == sizeof (Elf64_Mips_External_Rel))
2394 rela_p = FALSE;
2395 else
2396 rela_p = TRUE;
2397
2398 for (i = 0, relent = relents;
2399 i < reloc_count;
2400 i++, native_relocs += entsize)
2401 {
2402 Elf64_Mips_Internal_Rela rela;
2403 bfd_boolean used_sym, used_ssym;
2404 int ir;
2405
2406 if (entsize == sizeof (Elf64_Mips_External_Rela))
2407 mips_elf64_swap_reloca_in (abfd,
2408 (Elf64_Mips_External_Rela *) native_relocs,
2409 &rela);
2410 else
2411 mips_elf64_swap_reloc_in (abfd,
2412 (Elf64_Mips_External_Rel *) native_relocs,
2413 &rela);
2414
2415 /* Each entry represents exactly three actual relocations. */
2416
2417 used_sym = FALSE;
2418 used_ssym = FALSE;
2419 for (ir = 0; ir < 3; ir++)
2420 {
2421 enum elf_mips_reloc_type type;
2422
2423 switch (ir)
2424 {
2425 default:
2426 abort ();
2427 case 0:
2428 type = (enum elf_mips_reloc_type) rela.r_type;
2429 break;
2430 case 1:
2431 type = (enum elf_mips_reloc_type) rela.r_type2;
2432 break;
2433 case 2:
2434 type = (enum elf_mips_reloc_type) rela.r_type3;
2435 break;
2436 }
2437
2438 /* Some types require symbols, whereas some do not. */
2439 switch (type)
2440 {
2441 case R_MIPS_NONE:
2442 case R_MIPS_LITERAL:
2443 case R_MIPS_INSERT_A:
2444 case R_MIPS_INSERT_B:
2445 case R_MIPS_DELETE:
2446 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2447 break;
2448
2449 default:
2450 if (! used_sym)
2451 {
2452 if (rela.r_sym == 0)
2453 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2454 else
2455 {
2456 asymbol **ps, *s;
2457
2458 ps = symbols + rela.r_sym - 1;
2459 s = *ps;
2460 if ((s->flags & BSF_SECTION_SYM) == 0)
2461 relent->sym_ptr_ptr = ps;
2462 else
2463 relent->sym_ptr_ptr = s->section->symbol_ptr_ptr;
2464 }
2465
2466 used_sym = TRUE;
2467 }
2468 else if (! used_ssym)
2469 {
2470 switch (rela.r_ssym)
2471 {
2472 case RSS_UNDEF:
2473 relent->sym_ptr_ptr =
2474 bfd_abs_section_ptr->symbol_ptr_ptr;
2475 break;
2476
2477 case RSS_GP:
2478 case RSS_GP0:
2479 case RSS_LOC:
2480 /* FIXME: I think these need to be handled using
2481 special howto structures. */
2482 BFD_ASSERT (0);
2483 break;
2484
2485 default:
2486 BFD_ASSERT (0);
2487 break;
2488 }
2489
2490 used_ssym = TRUE;
2491 }
2492 else
2493 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
2494
2495 break;
2496 }
2497
2498 /* The address of an ELF reloc is section relative for an
2499 object file, and absolute for an executable file or
2500 shared library. The address of a BFD reloc is always
2501 section relative. */
2502 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic)
2503 relent->address = rela.r_offset;
2504 else
2505 relent->address = rela.r_offset - asect->vma;
2506
2507 relent->addend = rela.r_addend;
2508
2509 relent->howto = mips_elf64_rtype_to_howto (type, rela_p);
2510
2511 ++relent;
2512 }
2513 }
2514
2515 asect->reloc_count += (relent - relents) / 3;
2516
2517 if (allocated != NULL)
2518 free (allocated);
2519
2520 return TRUE;
2521
2522 error_return:
2523 if (allocated != NULL)
2524 free (allocated);
2525 return FALSE;
2526 }
2527
2528 /* Read the relocations. On Irix 6, there can be two reloc sections
2529 associated with a single data section. This is copied from
2530 elfcode.h as well, with changes as small as accounting for 3
2531 internal relocs per external reloc and resetting reloc_count to
2532 zero before processing the relocs of a section. */
2533
2534 static bfd_boolean
2535 mips_elf64_slurp_reloc_table (bfd *abfd, asection *asect,
2536 asymbol **symbols, bfd_boolean dynamic)
2537 {
2538 struct bfd_elf_section_data * const d = elf_section_data (asect);
2539 Elf_Internal_Shdr *rel_hdr;
2540 Elf_Internal_Shdr *rel_hdr2;
2541 bfd_size_type reloc_count;
2542 bfd_size_type reloc_count2;
2543 arelent *relents;
2544 bfd_size_type amt;
2545
2546 if (asect->relocation != NULL)
2547 return TRUE;
2548
2549 if (! dynamic)
2550 {
2551 if ((asect->flags & SEC_RELOC) == 0
2552 || asect->reloc_count == 0)
2553 return TRUE;
2554
2555 rel_hdr = &d->rel_hdr;
2556 reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
2557 rel_hdr2 = d->rel_hdr2;
2558 reloc_count2 = (rel_hdr2 ? NUM_SHDR_ENTRIES (rel_hdr2) : 0);
2559
2560 BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2);
2561 BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset
2562 || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset));
2563
2564 }
2565 else
2566 {
2567 /* Note that ASECT->RELOC_COUNT tends not to be accurate in this
2568 case because relocations against this section may use the
2569 dynamic symbol table, and in that case bfd_section_from_shdr
2570 in elf.c does not update the RELOC_COUNT. */
2571 if (asect->size == 0)
2572 return TRUE;
2573
2574 rel_hdr = &d->this_hdr;
2575 reloc_count = NUM_SHDR_ENTRIES (rel_hdr);
2576 rel_hdr2 = NULL;
2577 reloc_count2 = 0;
2578 }
2579
2580 /* Allocate space for 3 arelent structures for each Rel structure. */
2581 amt = (reloc_count + reloc_count2) * 3 * sizeof (arelent);
2582 relents = bfd_alloc (abfd, amt);
2583 if (relents == NULL)
2584 return FALSE;
2585
2586 /* The slurp_one_reloc_table routine increments reloc_count. */
2587 asect->reloc_count = 0;
2588
2589 if (! mips_elf64_slurp_one_reloc_table (abfd, asect,
2590 rel_hdr, reloc_count,
2591 relents,
2592 symbols, dynamic))
2593 return FALSE;
2594 if (d->rel_hdr2 != NULL)
2595 {
2596 if (! mips_elf64_slurp_one_reloc_table (abfd, asect,
2597 rel_hdr2, reloc_count2,
2598 relents + reloc_count * 3,
2599 symbols, dynamic))
2600 return FALSE;
2601 }
2602
2603 asect->relocation = relents;
2604 return TRUE;
2605 }
2606
2607 /* Write out the relocations. */
2608
2609 static void
2610 mips_elf64_write_relocs (bfd *abfd, asection *sec, void *data)
2611 {
2612 bfd_boolean *failedp = data;
2613 int count;
2614 Elf_Internal_Shdr *rel_hdr;
2615 unsigned int idx;
2616
2617 /* If we have already failed, don't do anything. */
2618 if (*failedp)
2619 return;
2620
2621 if ((sec->flags & SEC_RELOC) == 0)
2622 return;
2623
2624 /* The linker backend writes the relocs out itself, and sets the
2625 reloc_count field to zero to inhibit writing them here. Also,
2626 sometimes the SEC_RELOC flag gets set even when there aren't any
2627 relocs. */
2628 if (sec->reloc_count == 0)
2629 return;
2630
2631 /* We can combine up to three relocs that refer to the same address
2632 if the latter relocs have no associated symbol. */
2633 count = 0;
2634 for (idx = 0; idx < sec->reloc_count; idx++)
2635 {
2636 bfd_vma addr;
2637 unsigned int i;
2638
2639 ++count;
2640
2641 addr = sec->orelocation[idx]->address;
2642 for (i = 0; i < 2; i++)
2643 {
2644 arelent *r;
2645
2646 if (idx + 1 >= sec->reloc_count)
2647 break;
2648 r = sec->orelocation[idx + 1];
2649 if (r->address != addr
2650 || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
2651 || (*r->sym_ptr_ptr)->value != 0)
2652 break;
2653
2654 /* We can merge the reloc at IDX + 1 with the reloc at IDX. */
2655
2656 ++idx;
2657 }
2658 }
2659
2660 rel_hdr = &elf_section_data (sec)->rel_hdr;
2661
2662 /* Do the actual relocation. */
2663
2664 if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel))
2665 mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data);
2666 else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela))
2667 mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data);
2668 else
2669 BFD_ASSERT (0);
2670 }
2671
2672 static void
2673 mips_elf64_write_rel (bfd *abfd, asection *sec,
2674 Elf_Internal_Shdr *rel_hdr,
2675 int *count, void *data)
2676 {
2677 bfd_boolean *failedp = data;
2678 Elf64_Mips_External_Rel *ext_rel;
2679 unsigned int idx;
2680 asymbol *last_sym = 0;
2681 int last_sym_idx = 0;
2682
2683 rel_hdr->sh_size = rel_hdr->sh_entsize * *count;
2684 rel_hdr->contents = bfd_alloc (abfd, rel_hdr->sh_size);
2685 if (rel_hdr->contents == NULL)
2686 {
2687 *failedp = TRUE;
2688 return;
2689 }
2690
2691 ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents;
2692 for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++)
2693 {
2694 arelent *ptr;
2695 Elf64_Mips_Internal_Rela int_rel;
2696 asymbol *sym;
2697 int n;
2698 unsigned int i;
2699
2700 ptr = sec->orelocation[idx];
2701
2702 /* The address of an ELF reloc is section relative for an object
2703 file, and absolute for an executable file or shared library.
2704 The address of a BFD reloc is always section relative. */
2705 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
2706 int_rel.r_offset = ptr->address;
2707 else
2708 int_rel.r_offset = ptr->address + sec->vma;
2709
2710 sym = *ptr->sym_ptr_ptr;
2711 if (sym == last_sym)
2712 n = last_sym_idx;
2713 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
2714 n = STN_UNDEF;
2715 else
2716 {
2717 last_sym = sym;
2718 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
2719 if (n < 0)
2720 {
2721 *failedp = TRUE;
2722 return;
2723 }
2724 last_sym_idx = n;
2725 }
2726
2727 int_rel.r_sym = n;
2728 int_rel.r_ssym = RSS_UNDEF;
2729
2730 if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
2731 && ! _bfd_elf_validate_reloc (abfd, ptr))
2732 {
2733 *failedp = TRUE;
2734 return;
2735 }
2736
2737 int_rel.r_type = ptr->howto->type;
2738 int_rel.r_type2 = (int) R_MIPS_NONE;
2739 int_rel.r_type3 = (int) R_MIPS_NONE;
2740
2741 for (i = 0; i < 2; i++)
2742 {
2743 arelent *r;
2744
2745 if (idx + 1 >= sec->reloc_count)
2746 break;
2747 r = sec->orelocation[idx + 1];
2748 if (r->address != ptr->address
2749 || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
2750 || (*r->sym_ptr_ptr)->value != 0)
2751 break;
2752
2753 /* We can merge the reloc at IDX + 1 with the reloc at IDX. */
2754
2755 if (i == 0)
2756 int_rel.r_type2 = r->howto->type;
2757 else
2758 int_rel.r_type3 = r->howto->type;
2759
2760 ++idx;
2761 }
2762
2763 mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel);
2764 }
2765
2766 BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents
2767 == *count);
2768 }
2769
2770 static void
2771 mips_elf64_write_rela (bfd *abfd, asection *sec,
2772 Elf_Internal_Shdr *rela_hdr,
2773 int *count, void *data)
2774 {
2775 bfd_boolean *failedp = data;
2776 Elf64_Mips_External_Rela *ext_rela;
2777 unsigned int idx;
2778 asymbol *last_sym = 0;
2779 int last_sym_idx = 0;
2780
2781 rela_hdr->sh_size = rela_hdr->sh_entsize * *count;
2782 rela_hdr->contents = bfd_alloc (abfd, rela_hdr->sh_size);
2783 if (rela_hdr->contents == NULL)
2784 {
2785 *failedp = TRUE;
2786 return;
2787 }
2788
2789 ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents;
2790 for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++)
2791 {
2792 arelent *ptr;
2793 Elf64_Mips_Internal_Rela int_rela;
2794 asymbol *sym;
2795 int n;
2796 unsigned int i;
2797
2798 ptr = sec->orelocation[idx];
2799
2800 /* The address of an ELF reloc is section relative for an object
2801 file, and absolute for an executable file or shared library.
2802 The address of a BFD reloc is always section relative. */
2803 if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0)
2804 int_rela.r_offset = ptr->address;
2805 else
2806 int_rela.r_offset = ptr->address + sec->vma;
2807
2808 sym = *ptr->sym_ptr_ptr;
2809 if (sym == last_sym)
2810 n = last_sym_idx;
2811 else if (bfd_is_abs_section (sym->section) && sym->value == 0)
2812 n = STN_UNDEF;
2813 else
2814 {
2815 last_sym = sym;
2816 n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym);
2817 if (n < 0)
2818 {
2819 *failedp = TRUE;
2820 return;
2821 }
2822 last_sym_idx = n;
2823 }
2824
2825 int_rela.r_sym = n;
2826 int_rela.r_addend = ptr->addend;
2827 int_rela.r_ssym = RSS_UNDEF;
2828
2829 if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec
2830 && ! _bfd_elf_validate_reloc (abfd, ptr))
2831 {
2832 *failedp = TRUE;
2833 return;
2834 }
2835
2836 int_rela.r_type = ptr->howto->type;
2837 int_rela.r_type2 = (int) R_MIPS_NONE;
2838 int_rela.r_type3 = (int) R_MIPS_NONE;
2839
2840 for (i = 0; i < 2; i++)
2841 {
2842 arelent *r;
2843
2844 if (idx + 1 >= sec->reloc_count)
2845 break;
2846 r = sec->orelocation[idx + 1];
2847 if (r->address != ptr->address
2848 || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section)
2849 || (*r->sym_ptr_ptr)->value != 0)
2850 break;
2851
2852 /* We can merge the reloc at IDX + 1 with the reloc at IDX. */
2853
2854 if (i == 0)
2855 int_rela.r_type2 = r->howto->type;
2856 else
2857 int_rela.r_type3 = r->howto->type;
2858
2859 ++idx;
2860 }
2861
2862 mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela);
2863 }
2864
2865 BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents
2866 == *count);
2867 }
2868 \f
2869 /* Set the right machine number for a MIPS ELF file. */
2870
2871 static bfd_boolean
2872 mips_elf64_object_p (bfd *abfd)
2873 {
2874 unsigned long mach;
2875
2876 /* Irix 6 is broken. Object file symbol tables are not always
2877 sorted correctly such that local symbols precede global symbols,
2878 and the sh_info field in the symbol table is not always right. */
2879 if (elf64_mips_irix_compat (abfd) != ict_none)
2880 elf_bad_symtab (abfd) = TRUE;
2881
2882 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
2883 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
2884 return TRUE;
2885 }
2886
2887 /* Depending on the target vector we generate some version of Irix
2888 executables or "normal" MIPS ELF ABI executables. */
2889 static irix_compat_t
2890 elf64_mips_irix_compat (bfd *abfd)
2891 {
2892 if ((abfd->xvec == &bfd_elf64_bigmips_vec)
2893 || (abfd->xvec == &bfd_elf64_littlemips_vec))
2894 return ict_irix6;
2895 else
2896 return ict_none;
2897 }
2898 \f
2899 /* Support for core dump NOTE sections. */
2900 static bfd_boolean
2901 elf64_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2902 {
2903 int offset;
2904 unsigned int size;
2905
2906 switch (note->descsz)
2907 {
2908 default:
2909 return FALSE;
2910
2911 case 480: /* Linux/MIPS - N64 kernel */
2912 /* pr_cursig */
2913 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2914
2915 /* pr_pid */
2916 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 32);
2917
2918 /* pr_reg */
2919 offset = 112;
2920 size = 360;
2921
2922 break;
2923 }
2924
2925 /* Make a ".reg/999" section. */
2926 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
2927 size, note->descpos + offset);
2928 }
2929
2930 static bfd_boolean
2931 elf64_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2932 {
2933 switch (note->descsz)
2934 {
2935 default:
2936 return FALSE;
2937
2938 case 136: /* Linux/MIPS - N64 kernel elf_prpsinfo */
2939 elf_tdata (abfd)->core_program
2940 = _bfd_elfcore_strndup (abfd, note->descdata + 40, 16);
2941 elf_tdata (abfd)->core_command
2942 = _bfd_elfcore_strndup (abfd, note->descdata + 56, 80);
2943 }
2944
2945 /* Note that for some reason, a spurious space is tacked
2946 onto the end of the args in some (at least one anyway)
2947 implementations, so strip it off if it exists. */
2948
2949 {
2950 char *command = elf_tdata (abfd)->core_command;
2951 int n = strlen (command);
2952
2953 if (0 < n && command[n - 1] == ' ')
2954 command[n - 1] = '\0';
2955 }
2956
2957 return TRUE;
2958 }
2959 \f
2960 /* ECOFF swapping routines. These are used when dealing with the
2961 .mdebug section, which is in the ECOFF debugging format. */
2962 static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap =
2963 {
2964 /* Symbol table magic number. */
2965 magicSym2,
2966 /* Alignment of debugging information. E.g., 4. */
2967 8,
2968 /* Sizes of external symbolic information. */
2969 sizeof (struct hdr_ext),
2970 sizeof (struct dnr_ext),
2971 sizeof (struct pdr_ext),
2972 sizeof (struct sym_ext),
2973 sizeof (struct opt_ext),
2974 sizeof (struct fdr_ext),
2975 sizeof (struct rfd_ext),
2976 sizeof (struct ext_ext),
2977 /* Functions to swap in external symbolic data. */
2978 ecoff_swap_hdr_in,
2979 ecoff_swap_dnr_in,
2980 ecoff_swap_pdr_in,
2981 ecoff_swap_sym_in,
2982 ecoff_swap_opt_in,
2983 ecoff_swap_fdr_in,
2984 ecoff_swap_rfd_in,
2985 ecoff_swap_ext_in,
2986 _bfd_ecoff_swap_tir_in,
2987 _bfd_ecoff_swap_rndx_in,
2988 /* Functions to swap out external symbolic data. */
2989 ecoff_swap_hdr_out,
2990 ecoff_swap_dnr_out,
2991 ecoff_swap_pdr_out,
2992 ecoff_swap_sym_out,
2993 ecoff_swap_opt_out,
2994 ecoff_swap_fdr_out,
2995 ecoff_swap_rfd_out,
2996 ecoff_swap_ext_out,
2997 _bfd_ecoff_swap_tir_out,
2998 _bfd_ecoff_swap_rndx_out,
2999 /* Function to read in symbolic data. */
3000 _bfd_mips_elf_read_ecoff_info
3001 };
3002 \f
3003 /* Relocations in the 64 bit MIPS ELF ABI are more complex than in
3004 standard ELF. This structure is used to redirect the relocation
3005 handling routines. */
3006
3007 const struct elf_size_info mips_elf64_size_info =
3008 {
3009 sizeof (Elf64_External_Ehdr),
3010 sizeof (Elf64_External_Phdr),
3011 sizeof (Elf64_External_Shdr),
3012 sizeof (Elf64_Mips_External_Rel),
3013 sizeof (Elf64_Mips_External_Rela),
3014 sizeof (Elf64_External_Sym),
3015 sizeof (Elf64_External_Dyn),
3016 sizeof (Elf_External_Note),
3017 4, /* hash-table entry size */
3018 3, /* internal relocations per external relocations */
3019 64, /* arch_size */
3020 3, /* log_file_align */
3021 ELFCLASS64,
3022 EV_CURRENT,
3023 bfd_elf64_write_out_phdrs,
3024 bfd_elf64_write_shdrs_and_ehdr,
3025 mips_elf64_write_relocs,
3026 bfd_elf64_swap_symbol_in,
3027 bfd_elf64_swap_symbol_out,
3028 mips_elf64_slurp_reloc_table,
3029 bfd_elf64_slurp_symbol_table,
3030 bfd_elf64_swap_dyn_in,
3031 bfd_elf64_swap_dyn_out,
3032 mips_elf64_be_swap_reloc_in,
3033 mips_elf64_be_swap_reloc_out,
3034 mips_elf64_be_swap_reloca_in,
3035 mips_elf64_be_swap_reloca_out
3036 };
3037
3038 #define ELF_ARCH bfd_arch_mips
3039 #define ELF_MACHINE_CODE EM_MIPS
3040
3041 #define elf_backend_collect TRUE
3042 #define elf_backend_type_change_ok TRUE
3043 #define elf_backend_can_gc_sections TRUE
3044 #define elf_info_to_howto mips_elf64_info_to_howto_rela
3045 #define elf_info_to_howto_rel mips_elf64_info_to_howto_rel
3046 #define elf_backend_object_p mips_elf64_object_p
3047 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
3048 #define elf_backend_section_processing _bfd_mips_elf_section_processing
3049 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
3050 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
3051 #define elf_backend_section_from_bfd_section \
3052 _bfd_mips_elf_section_from_bfd_section
3053 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
3054 #define elf_backend_link_output_symbol_hook \
3055 _bfd_mips_elf_link_output_symbol_hook
3056 #define elf_backend_create_dynamic_sections \
3057 _bfd_mips_elf_create_dynamic_sections
3058 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
3059 #define elf_backend_merge_symbol_attribute \
3060 _bfd_mips_elf_merge_symbol_attribute
3061 #define elf_backend_adjust_dynamic_symbol \
3062 _bfd_mips_elf_adjust_dynamic_symbol
3063 #define elf_backend_always_size_sections \
3064 _bfd_mips_elf_always_size_sections
3065 #define elf_backend_size_dynamic_sections \
3066 _bfd_mips_elf_size_dynamic_sections
3067 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3068 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
3069 #define elf_backend_finish_dynamic_symbol \
3070 _bfd_mips_elf_finish_dynamic_symbol
3071 #define elf_backend_finish_dynamic_sections \
3072 _bfd_mips_elf_finish_dynamic_sections
3073 #define elf_backend_final_write_processing \
3074 _bfd_mips_elf_final_write_processing
3075 #define elf_backend_additional_program_headers \
3076 _bfd_mips_elf_additional_program_headers
3077 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
3078 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
3079 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
3080 #define elf_backend_copy_indirect_symbol \
3081 _bfd_mips_elf_copy_indirect_symbol
3082 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
3083 #define elf_backend_ignore_discarded_relocs \
3084 _bfd_mips_elf_ignore_discarded_relocs
3085 #define elf_backend_mips_irix_compat elf64_mips_irix_compat
3086 #define elf_backend_mips_rtype_to_howto mips_elf64_rtype_to_howto
3087 #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap
3088 #define elf_backend_size_info mips_elf64_size_info
3089
3090 #define elf_backend_grok_prstatus elf64_mips_grok_prstatus
3091 #define elf_backend_grok_psinfo elf64_mips_grok_psinfo
3092
3093 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
3094
3095 /* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations
3096 work better/work only in RELA, so we default to this. */
3097 #define elf_backend_may_use_rel_p 1
3098 #define elf_backend_may_use_rela_p 1
3099 #define elf_backend_default_use_rela_p 1
3100
3101 #define elf_backend_write_section _bfd_mips_elf_write_section
3102
3103 /* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit
3104 MIPS-specific function only applies to IRIX5, which had no 64-bit
3105 ABI. */
3106 #define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line
3107 #define bfd_elf64_find_inliner_info _bfd_mips_elf_find_inliner_info
3108 #define bfd_elf64_new_section_hook _bfd_mips_elf_new_section_hook
3109 #define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents
3110 #define bfd_elf64_bfd_get_relocated_section_contents \
3111 _bfd_elf_mips_get_relocated_section_contents
3112 #define bfd_elf64_bfd_link_hash_table_create \
3113 _bfd_mips_elf_link_hash_table_create
3114 #define bfd_elf64_bfd_final_link _bfd_mips_elf_final_link
3115 #define bfd_elf64_bfd_merge_private_bfd_data \
3116 _bfd_mips_elf_merge_private_bfd_data
3117 #define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags
3118 #define bfd_elf64_bfd_print_private_bfd_data \
3119 _bfd_mips_elf_print_private_bfd_data
3120
3121 #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound
3122 #define bfd_elf64_canonicalize_reloc mips_elf64_canonicalize_reloc
3123 #define bfd_elf64_get_dynamic_reloc_upper_bound mips_elf64_get_dynamic_reloc_upper_bound
3124 #define bfd_elf64_canonicalize_dynamic_reloc mips_elf64_canonicalize_dynamic_reloc
3125 #define bfd_elf64_bfd_relax_section _bfd_mips_relax_section
3126
3127 /* MIPS ELF64 archive functions. */
3128 #define bfd_elf64_archive_functions
3129 extern bfd_boolean bfd_elf64_archive_slurp_armap
3130 (bfd *);
3131 extern bfd_boolean bfd_elf64_archive_write_armap
3132 (bfd *, unsigned int, struct orl *, unsigned int, int);
3133 #define bfd_elf64_archive_slurp_extended_name_table \
3134 _bfd_archive_coff_slurp_extended_name_table
3135 #define bfd_elf64_archive_construct_extended_name_table \
3136 _bfd_archive_coff_construct_extended_name_table
3137 #define bfd_elf64_archive_truncate_arname \
3138 _bfd_archive_coff_truncate_arname
3139 #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr
3140 #define bfd_elf64_archive_openr_next_archived_file \
3141 _bfd_archive_coff_openr_next_archived_file
3142 #define bfd_elf64_archive_get_elt_at_index \
3143 _bfd_archive_coff_get_elt_at_index
3144 #define bfd_elf64_archive_generic_stat_arch_elt \
3145 _bfd_archive_coff_generic_stat_arch_elt
3146 #define bfd_elf64_archive_update_armap_timestamp \
3147 _bfd_archive_coff_update_armap_timestamp
3148
3149 /* The SGI style (n)64 NewABI. */
3150 #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec
3151 #define TARGET_LITTLE_NAME "elf64-littlemips"
3152 #define TARGET_BIG_SYM bfd_elf64_bigmips_vec
3153 #define TARGET_BIG_NAME "elf64-bigmips"
3154
3155 #define ELF_MAXPAGESIZE 0x10000
3156 #define ELF_COMMONPAGESIZE 0x1000
3157
3158 #include "elf64-target.h"
3159
3160 /* The SYSV-style 'traditional' (n)64 NewABI. */
3161 #undef TARGET_LITTLE_SYM
3162 #undef TARGET_LITTLE_NAME
3163 #undef TARGET_BIG_SYM
3164 #undef TARGET_BIG_NAME
3165
3166 #undef ELF_MAXPAGESIZE
3167 #undef ELF_COMMONPAGESIZE
3168
3169 #define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec
3170 #define TARGET_LITTLE_NAME "elf64-tradlittlemips"
3171 #define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec
3172 #define TARGET_BIG_NAME "elf64-tradbigmips"
3173
3174 #define ELF_MAXPAGESIZE 0x10000
3175 #define ELF_COMMONPAGESIZE 0x1000
3176 #define elf64_bed elf64_tradbed
3177
3178 /* Include the target file again for this target. */
3179 #include "elf64-target.h"
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