1 /* MIPS-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
4
5 Most of the information added by Ian Lance Taylor, Cygnus Support,
6 <ian@cygnus.com>.
7 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
8 <mark@codesourcery.com>
9 Traditional MIPS targets support added by Koundinya.K, Dansk Data
10 Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
11
12 This file is part of BFD, the Binary File Descriptor library.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 2 of the License, or
17 (at your option) any later version.
18
19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
27
28 /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
29 different MIPS ELF from other targets. This matters when linking.
30 This file supports both, switching at runtime. */
31
32 #include "sysdep.h"
33 #include "bfd.h"
34 #include "libbfd.h"
35 #include "bfdlink.h"
36 #include "genlink.h"
37 #include "elf-bfd.h"
38 #include "elfxx-mips.h"
39 #include "elf/mips.h"
40
41 /* Get the ECOFF swapping routines. */
42 #include "coff/sym.h"
43 #include "coff/symconst.h"
44 #include "coff/internal.h"
45 #include "coff/ecoff.h"
46 #include "coff/mips.h"
47 #define ECOFF_SIGNED_32
48 #include "ecoffswap.h"
49
50 static bfd_boolean mips_elf_assign_gp
51 (bfd *, bfd_vma *);
52 static bfd_reloc_status_type mips_elf_final_gp
53 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
54 static bfd_reloc_status_type mips_elf_gprel16_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_reloc_status_type mips_elf_literal_reloc
57 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
58 static bfd_reloc_status_type mips_elf_gprel32_reloc
59 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
60 static bfd_reloc_status_type gprel32_with_gp
61 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
62 static bfd_reloc_status_type mips_elf_shift6_reloc
63 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
64 static bfd_reloc_status_type mips16_gprel_reloc
65 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
66 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
67 (bfd *, bfd_reloc_code_real_type);
68 static reloc_howto_type *mips_elf_n32_rtype_to_howto
69 (unsigned int, bfd_boolean);
70 static void mips_info_to_howto_rel
71 (bfd *, arelent *, Elf_Internal_Rela *);
72 static void mips_info_to_howto_rela
73 (bfd *, arelent *, Elf_Internal_Rela *);
74 static bfd_boolean mips_elf_sym_is_global
75 (bfd *, asymbol *);
76 static bfd_boolean mips_elf_n32_object_p
77 (bfd *);
78 static bfd_boolean elf32_mips_grok_prstatus
79 (bfd *, Elf_Internal_Note *);
80 static bfd_boolean elf32_mips_grok_psinfo
81 (bfd *, Elf_Internal_Note *);
82 static irix_compat_t elf_n32_mips_irix_compat
83 (bfd *);
84
85 extern const bfd_target bfd_elf32_nbigmips_vec;
86 extern const bfd_target bfd_elf32_nlittlemips_vec;
87
88 /* Nonzero if ABFD is using the N32 ABI. */
89 #define ABI_N32_P(abfd) \
90 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
91
92 /* Whether we are trying to be compatible with IRIX at all. */
93 #define SGI_COMPAT(abfd) \
94 (elf_n32_mips_irix_compat (abfd) != ict_none)
95
96 /* The number of local .got entries we reserve. */
97 #define MIPS_RESERVED_GOTNO (2)
98
99 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
100 from smaller values. Start with zero, widen, *then* decrement. */
101 #define MINUS_ONE (((bfd_vma)0) - 1)
102
103 /* The relocation table used for SHT_REL sections. */
104
105 static reloc_howto_type elf_mips_howto_table_rel[] =
106 {
107 /* No relocation. */
108 HOWTO (R_MIPS_NONE, /* type */
109 0, /* rightshift */
110 0, /* size (0 = byte, 1 = short, 2 = long) */
111 0, /* bitsize */
112 FALSE, /* pc_relative */
113 0, /* bitpos */
114 complain_overflow_dont, /* complain_on_overflow */
115 _bfd_mips_elf_generic_reloc, /* special_function */
116 "R_MIPS_NONE", /* name */
117 FALSE, /* partial_inplace */
118 0, /* src_mask */
119 0, /* dst_mask */
120 FALSE), /* pcrel_offset */
121
122 /* 16 bit relocation. */
123 HOWTO (R_MIPS_16, /* type */
124 0, /* rightshift */
125 2, /* size (0 = byte, 1 = short, 2 = long) */
126 16, /* bitsize */
127 FALSE, /* pc_relative */
128 0, /* bitpos */
129 complain_overflow_signed, /* complain_on_overflow */
130 _bfd_mips_elf_generic_reloc, /* special_function */
131 "R_MIPS_16", /* name */
132 TRUE, /* partial_inplace */
133 0x0000ffff, /* src_mask */
134 0x0000ffff, /* dst_mask */
135 FALSE), /* pcrel_offset */
136
137 /* 32 bit relocation. */
138 HOWTO (R_MIPS_32, /* type */
139 0, /* rightshift */
140 2, /* size (0 = byte, 1 = short, 2 = long) */
141 32, /* bitsize */
142 FALSE, /* pc_relative */
143 0, /* bitpos */
144 complain_overflow_dont, /* complain_on_overflow */
145 _bfd_mips_elf_generic_reloc, /* special_function */
146 "R_MIPS_32", /* name */
147 TRUE, /* partial_inplace */
148 0xffffffff, /* src_mask */
149 0xffffffff, /* dst_mask */
150 FALSE), /* pcrel_offset */
151
152 /* 32 bit symbol relative relocation. */
153 HOWTO (R_MIPS_REL32, /* type */
154 0, /* rightshift */
155 2, /* size (0 = byte, 1 = short, 2 = long) */
156 32, /* bitsize */
157 FALSE, /* pc_relative */
158 0, /* bitpos */
159 complain_overflow_dont, /* complain_on_overflow */
160 _bfd_mips_elf_generic_reloc, /* special_function */
161 "R_MIPS_REL32", /* name */
162 TRUE, /* partial_inplace */
163 0xffffffff, /* src_mask */
164 0xffffffff, /* dst_mask */
165 FALSE), /* pcrel_offset */
166
167 /* 26 bit jump address. */
168 HOWTO (R_MIPS_26, /* type */
169 2, /* rightshift */
170 2, /* size (0 = byte, 1 = short, 2 = long) */
171 26, /* bitsize */
172 FALSE, /* pc_relative */
173 0, /* bitpos */
174 complain_overflow_dont, /* complain_on_overflow */
175 /* This needs complex overflow
176 detection, because the upper four
177 bits must match the PC + 4. */
178 _bfd_mips_elf_generic_reloc, /* special_function */
179 "R_MIPS_26", /* name */
180 TRUE, /* partial_inplace */
181 0x03ffffff, /* src_mask */
182 0x03ffffff, /* dst_mask */
183 FALSE), /* pcrel_offset */
184
185 /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
186 However, the native IRIX6 tools use them, so we try our best. */
187
188 /* High 16 bits of symbol value. */
189 HOWTO (R_MIPS_HI16, /* type */
190 16, /* rightshift */
191 2, /* size (0 = byte, 1 = short, 2 = long) */
192 16, /* bitsize */
193 FALSE, /* pc_relative */
194 0, /* bitpos */
195 complain_overflow_dont, /* complain_on_overflow */
196 _bfd_mips_elf_hi16_reloc, /* special_function */
197 "R_MIPS_HI16", /* name */
198 TRUE, /* partial_inplace */
199 0x0000ffff, /* src_mask */
200 0x0000ffff, /* dst_mask */
201 FALSE), /* pcrel_offset */
202
203 /* Low 16 bits of symbol value. */
204 HOWTO (R_MIPS_LO16, /* type */
205 0, /* rightshift */
206 2, /* size (0 = byte, 1 = short, 2 = long) */
207 16, /* bitsize */
208 FALSE, /* pc_relative */
209 0, /* bitpos */
210 complain_overflow_dont, /* complain_on_overflow */
211 _bfd_mips_elf_lo16_reloc, /* special_function */
212 "R_MIPS_LO16", /* name */
213 TRUE, /* partial_inplace */
214 0x0000ffff, /* src_mask */
215 0x0000ffff, /* dst_mask */
216 FALSE), /* pcrel_offset */
217
218 /* GP relative reference. */
219 HOWTO (R_MIPS_GPREL16, /* type */
220 0, /* rightshift */
221 2, /* size (0 = byte, 1 = short, 2 = long) */
222 16, /* bitsize */
223 FALSE, /* pc_relative */
224 0, /* bitpos */
225 complain_overflow_signed, /* complain_on_overflow */
226 mips_elf_gprel16_reloc, /* special_function */
227 "R_MIPS_GPREL16", /* name */
228 TRUE, /* partial_inplace */
229 0x0000ffff, /* src_mask */
230 0x0000ffff, /* dst_mask */
231 FALSE), /* pcrel_offset */
232
233 /* Reference to literal section. */
234 HOWTO (R_MIPS_LITERAL, /* type */
235 0, /* rightshift */
236 2, /* size (0 = byte, 1 = short, 2 = long) */
237 16, /* bitsize */
238 FALSE, /* pc_relative */
239 0, /* bitpos */
240 complain_overflow_signed, /* complain_on_overflow */
241 mips_elf_literal_reloc, /* special_function */
242 "R_MIPS_LITERAL", /* name */
243 TRUE, /* partial_inplace */
244 0x0000ffff, /* src_mask */
245 0x0000ffff, /* dst_mask */
246 FALSE), /* pcrel_offset */
247
248 /* Reference to global offset table. */
249 HOWTO (R_MIPS_GOT16, /* type */
250 0, /* rightshift */
251 2, /* size (0 = byte, 1 = short, 2 = long) */
252 16, /* bitsize */
253 FALSE, /* pc_relative */
254 0, /* bitpos */
255 complain_overflow_signed, /* complain_on_overflow */
256 _bfd_mips_elf_got16_reloc, /* special_function */
257 "R_MIPS_GOT16", /* name */
258 TRUE, /* partial_inplace */
259 0x0000ffff, /* src_mask */
260 0x0000ffff, /* dst_mask */
261 FALSE), /* pcrel_offset */
262
263 /* 16 bit PC relative reference. Note that the ABI document has a typo
264 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
265 We do the right thing here. */
266 HOWTO (R_MIPS_PC16, /* type */
267 2, /* rightshift */
268 2, /* size (0 = byte, 1 = short, 2 = long) */
269 16, /* bitsize */
270 TRUE, /* pc_relative */
271 0, /* bitpos */
272 complain_overflow_signed, /* complain_on_overflow */
273 _bfd_mips_elf_generic_reloc, /* special_function */
274 "R_MIPS_PC16", /* name */
275 TRUE, /* partial_inplace */
276 0x0000ffff, /* src_mask */
277 0x0000ffff, /* dst_mask */
278 TRUE), /* pcrel_offset */
279
280 /* 16 bit call through global offset table. */
281 HOWTO (R_MIPS_CALL16, /* type */
282 0, /* rightshift */
283 2, /* size (0 = byte, 1 = short, 2 = long) */
284 16, /* bitsize */
285 FALSE, /* pc_relative */
286 0, /* bitpos */
287 complain_overflow_signed, /* complain_on_overflow */
288 _bfd_mips_elf_generic_reloc, /* special_function */
289 "R_MIPS_CALL16", /* name */
290 TRUE, /* partial_inplace */
291 0x0000ffff, /* src_mask */
292 0x0000ffff, /* dst_mask */
293 FALSE), /* pcrel_offset */
294
295 /* 32 bit GP relative reference. */
296 HOWTO (R_MIPS_GPREL32, /* type */
297 0, /* rightshift */
298 2, /* size (0 = byte, 1 = short, 2 = long) */
299 32, /* bitsize */
300 FALSE, /* pc_relative */
301 0, /* bitpos */
302 complain_overflow_dont, /* complain_on_overflow */
303 mips_elf_gprel32_reloc, /* special_function */
304 "R_MIPS_GPREL32", /* name */
305 TRUE, /* partial_inplace */
306 0xffffffff, /* src_mask */
307 0xffffffff, /* dst_mask */
308 FALSE), /* pcrel_offset */
309
310 /* The remaining relocs are defined on Irix 5, although they are
311 not defined by the ABI. */
312 EMPTY_HOWTO (13),
313 EMPTY_HOWTO (14),
314 EMPTY_HOWTO (15),
315
316 /* A 5 bit shift field. */
317 HOWTO (R_MIPS_SHIFT5, /* type */
318 0, /* rightshift */
319 2, /* size (0 = byte, 1 = short, 2 = long) */
320 5, /* bitsize */
321 FALSE, /* pc_relative */
322 6, /* bitpos */
323 complain_overflow_bitfield, /* complain_on_overflow */
324 _bfd_mips_elf_generic_reloc, /* special_function */
325 "R_MIPS_SHIFT5", /* name */
326 TRUE, /* partial_inplace */
327 0x000007c0, /* src_mask */
328 0x000007c0, /* dst_mask */
329 FALSE), /* pcrel_offset */
330
331 /* A 6 bit shift field. */
332 HOWTO (R_MIPS_SHIFT6, /* type */
333 0, /* rightshift */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
335 6, /* bitsize */
336 FALSE, /* pc_relative */
337 6, /* bitpos */
338 complain_overflow_bitfield, /* complain_on_overflow */
339 mips_elf_shift6_reloc, /* special_function */
340 "R_MIPS_SHIFT6", /* name */
341 TRUE, /* partial_inplace */
342 0x000007c4, /* src_mask */
343 0x000007c4, /* dst_mask */
344 FALSE), /* pcrel_offset */
345
346 /* A 64 bit relocation. */
347 HOWTO (R_MIPS_64, /* type */
348 0, /* rightshift */
349 4, /* size (0 = byte, 1 = short, 2 = long) */
350 64, /* bitsize */
351 FALSE, /* pc_relative */
352 0, /* bitpos */
353 complain_overflow_dont, /* complain_on_overflow */
354 _bfd_mips_elf_generic_reloc, /* special_function */
355 "R_MIPS_64", /* name */
356 TRUE, /* partial_inplace */
357 MINUS_ONE, /* src_mask */
358 MINUS_ONE, /* dst_mask */
359 FALSE), /* pcrel_offset */
360
361 /* Displacement in the global offset table. */
362 HOWTO (R_MIPS_GOT_DISP, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 16, /* bitsize */
366 FALSE, /* pc_relative */
367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
369 _bfd_mips_elf_generic_reloc, /* special_function */
370 "R_MIPS_GOT_DISP", /* name */
371 TRUE, /* partial_inplace */
372 0x0000ffff, /* src_mask */
373 0x0000ffff, /* dst_mask */
374 FALSE), /* pcrel_offset */
375
376 /* Displacement to page pointer in the global offset table. */
377 HOWTO (R_MIPS_GOT_PAGE, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
381 FALSE, /* pc_relative */
382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
384 _bfd_mips_elf_generic_reloc, /* special_function */
385 "R_MIPS_GOT_PAGE", /* name */
386 TRUE, /* partial_inplace */
387 0x0000ffff, /* src_mask */
388 0x0000ffff, /* dst_mask */
389 FALSE), /* pcrel_offset */
390
391 /* Offset from page pointer in the global offset table. */
392 HOWTO (R_MIPS_GOT_OFST, /* type */
393 0, /* rightshift */
394 2, /* size (0 = byte, 1 = short, 2 = long) */
395 16, /* bitsize */
396 FALSE, /* pc_relative */
397 0, /* bitpos */
398 complain_overflow_signed, /* complain_on_overflow */
399 _bfd_mips_elf_generic_reloc, /* special_function */
400 "R_MIPS_GOT_OFST", /* name */
401 TRUE, /* partial_inplace */
402 0x0000ffff, /* src_mask */
403 0x0000ffff, /* dst_mask */
404 FALSE), /* pcrel_offset */
405
406 /* High 16 bits of displacement in global offset table. */
407 HOWTO (R_MIPS_GOT_HI16, /* type */
408 0, /* rightshift */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
410 16, /* bitsize */
411 FALSE, /* pc_relative */
412 0, /* bitpos */
413 complain_overflow_dont, /* complain_on_overflow */
414 _bfd_mips_elf_generic_reloc, /* special_function */
415 "R_MIPS_GOT_HI16", /* name */
416 TRUE, /* partial_inplace */
417 0x0000ffff, /* src_mask */
418 0x0000ffff, /* dst_mask */
419 FALSE), /* pcrel_offset */
420
421 /* Low 16 bits of displacement in global offset table. */
422 HOWTO (R_MIPS_GOT_LO16, /* type */
423 0, /* rightshift */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
425 16, /* bitsize */
426 FALSE, /* pc_relative */
427 0, /* bitpos */
428 complain_overflow_dont, /* complain_on_overflow */
429 _bfd_mips_elf_generic_reloc, /* special_function */
430 "R_MIPS_GOT_LO16", /* name */
431 TRUE, /* partial_inplace */
432 0x0000ffff, /* src_mask */
433 0x0000ffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
435
436 /* 64 bit subtraction. */
437 HOWTO (R_MIPS_SUB, /* type */
438 0, /* rightshift */
439 4, /* size (0 = byte, 1 = short, 2 = long) */
440 64, /* bitsize */
441 FALSE, /* pc_relative */
442 0, /* bitpos */
443 complain_overflow_dont, /* complain_on_overflow */
444 _bfd_mips_elf_generic_reloc, /* special_function */
445 "R_MIPS_SUB", /* name */
446 TRUE, /* partial_inplace */
447 MINUS_ONE, /* src_mask */
448 MINUS_ONE, /* dst_mask */
449 FALSE), /* pcrel_offset */
450
451 /* Insert the addend as an instruction. */
452 /* FIXME: Not handled correctly. */
453 HOWTO (R_MIPS_INSERT_A, /* type */
454 0, /* rightshift */
455 2, /* size (0 = byte, 1 = short, 2 = long) */
456 32, /* bitsize */
457 FALSE, /* pc_relative */
458 0, /* bitpos */
459 complain_overflow_dont, /* complain_on_overflow */
460 _bfd_mips_elf_generic_reloc, /* special_function */
461 "R_MIPS_INSERT_A", /* name */
462 TRUE, /* partial_inplace */
463 0xffffffff, /* src_mask */
464 0xffffffff, /* dst_mask */
465 FALSE), /* pcrel_offset */
466
467 /* Insert the addend as an instruction, and change all relocations
468 to refer to the old instruction at the address. */
469 /* FIXME: Not handled correctly. */
470 HOWTO (R_MIPS_INSERT_B, /* type */
471 0, /* rightshift */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
473 32, /* bitsize */
474 FALSE, /* pc_relative */
475 0, /* bitpos */
476 complain_overflow_dont, /* complain_on_overflow */
477 _bfd_mips_elf_generic_reloc, /* special_function */
478 "R_MIPS_INSERT_B", /* name */
479 TRUE, /* partial_inplace */
480 0xffffffff, /* src_mask */
481 0xffffffff, /* dst_mask */
482 FALSE), /* pcrel_offset */
483
484 /* Delete a 32 bit instruction. */
485 /* FIXME: Not handled correctly. */
486 HOWTO (R_MIPS_DELETE, /* type */
487 0, /* rightshift */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
489 32, /* bitsize */
490 FALSE, /* pc_relative */
491 0, /* bitpos */
492 complain_overflow_dont, /* complain_on_overflow */
493 _bfd_mips_elf_generic_reloc, /* special_function */
494 "R_MIPS_DELETE", /* name */
495 TRUE, /* partial_inplace */
496 0xffffffff, /* src_mask */
497 0xffffffff, /* dst_mask */
498 FALSE), /* pcrel_offset */
499
500 /* The MIPS ELF64 ABI Draft wants us to support these for REL relocations.
501 We don't, because
502 a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/
503 R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using
504 fallable heuristics.
505 b) No other NewABI toolchain actually emits such relocations. */
506 EMPTY_HOWTO (R_MIPS_HIGHER),
507 EMPTY_HOWTO (R_MIPS_HIGHEST),
508
509 /* High 16 bits of displacement in global offset table. */
510 HOWTO (R_MIPS_CALL_HI16, /* type */
511 0, /* rightshift */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
513 16, /* bitsize */
514 FALSE, /* pc_relative */
515 0, /* bitpos */
516 complain_overflow_dont, /* complain_on_overflow */
517 _bfd_mips_elf_generic_reloc, /* special_function */
518 "R_MIPS_CALL_HI16", /* name */
519 TRUE, /* partial_inplace */
520 0x0000ffff, /* src_mask */
521 0x0000ffff, /* dst_mask */
522 FALSE), /* pcrel_offset */
523
524 /* Low 16 bits of displacement in global offset table. */
525 HOWTO (R_MIPS_CALL_LO16, /* type */
526 0, /* rightshift */
527 2, /* size (0 = byte, 1 = short, 2 = long) */
528 16, /* bitsize */
529 FALSE, /* pc_relative */
530 0, /* bitpos */
531 complain_overflow_dont, /* complain_on_overflow */
532 _bfd_mips_elf_generic_reloc, /* special_function */
533 "R_MIPS_CALL_LO16", /* name */
534 TRUE, /* partial_inplace */
535 0x0000ffff, /* src_mask */
536 0x0000ffff, /* dst_mask */
537 FALSE), /* pcrel_offset */
538
539 /* Section displacement. */
540 HOWTO (R_MIPS_SCN_DISP, /* type */
541 0, /* rightshift */
542 2, /* size (0 = byte, 1 = short, 2 = long) */
543 32, /* bitsize */
544 FALSE, /* pc_relative */
545 0, /* bitpos */
546 complain_overflow_dont, /* complain_on_overflow */
547 _bfd_mips_elf_generic_reloc, /* special_function */
548 "R_MIPS_SCN_DISP", /* name */
549 TRUE, /* partial_inplace */
550 0xffffffff, /* src_mask */
551 0xffffffff, /* dst_mask */
552 FALSE), /* pcrel_offset */
553
554 HOWTO (R_MIPS_REL16, /* type */
555 0, /* rightshift */
556 1, /* size (0 = byte, 1 = short, 2 = long) */
557 16, /* bitsize */
558 FALSE, /* pc_relative */
559 0, /* bitpos */
560 complain_overflow_signed, /* complain_on_overflow */
561 _bfd_mips_elf_generic_reloc, /* special_function */
562 "R_MIPS_REL16", /* name */
563 TRUE, /* partial_inplace */
564 0xffff, /* src_mask */
565 0xffff, /* dst_mask */
566 FALSE), /* pcrel_offset */
567
568 /* These two are obsolete. */
569 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
570 EMPTY_HOWTO (R_MIPS_PJUMP),
571
572 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
573 It must be used for multigot GOT's (and only there). */
574 HOWTO (R_MIPS_RELGOT, /* type */
575 0, /* rightshift */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
577 32, /* bitsize */
578 FALSE, /* pc_relative */
579 0, /* bitpos */
580 complain_overflow_dont, /* complain_on_overflow */
581 _bfd_mips_elf_generic_reloc, /* special_function */
582 "R_MIPS_RELGOT", /* name */
583 TRUE, /* partial_inplace */
584 0xffffffff, /* src_mask */
585 0xffffffff, /* dst_mask */
586 FALSE), /* pcrel_offset */
587
588 /* Protected jump conversion. This is an optimization hint. No
589 relocation is required for correctness. */
590 HOWTO (R_MIPS_JALR, /* type */
591 0, /* rightshift */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
593 32, /* bitsize */
594 FALSE, /* pc_relative */
595 0, /* bitpos */
596 complain_overflow_dont, /* complain_on_overflow */
597 _bfd_mips_elf_generic_reloc, /* special_function */
598 "R_MIPS_JALR", /* name */
599 FALSE, /* partial_inplace */
600 0x00000000, /* src_mask */
601 0x00000000, /* dst_mask */
602 FALSE), /* pcrel_offset */
603
604 /* TLS GD/LD dynamic relocations. */
605 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
606 0, /* rightshift */
607 2, /* size (0 = byte, 1 = short, 2 = long) */
608 32, /* bitsize */
609 FALSE, /* pc_relative */
610 0, /* bitpos */
611 complain_overflow_dont, /* complain_on_overflow */
612 _bfd_mips_elf_generic_reloc, /* special_function */
613 "R_MIPS_TLS_DTPMOD32", /* name */
614 TRUE, /* partial_inplace */
615 0xffffffff, /* src_mask */
616 0xffffffff, /* dst_mask */
617 FALSE), /* pcrel_offset */
618
619 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
620 0, /* rightshift */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
622 32, /* bitsize */
623 FALSE, /* pc_relative */
624 0, /* bitpos */
625 complain_overflow_dont, /* complain_on_overflow */
626 _bfd_mips_elf_generic_reloc, /* special_function */
627 "R_MIPS_TLS_DTPREL32", /* name */
628 TRUE, /* partial_inplace */
629 0xffffffff, /* src_mask */
630 0xffffffff, /* dst_mask */
631 FALSE), /* pcrel_offset */
632
633 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
634 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
635
636 /* TLS general dynamic variable reference. */
637 HOWTO (R_MIPS_TLS_GD, /* type */
638 0, /* rightshift */
639 2, /* size (0 = byte, 1 = short, 2 = long) */
640 16, /* bitsize */
641 FALSE, /* pc_relative */
642 0, /* bitpos */
643 complain_overflow_signed, /* complain_on_overflow */
644 _bfd_mips_elf_generic_reloc, /* special_function */
645 "R_MIPS_TLS_GD", /* name */
646 TRUE, /* partial_inplace */
647 0x0000ffff, /* src_mask */
648 0x0000ffff, /* dst_mask */
649 FALSE), /* pcrel_offset */
650
651 /* TLS local dynamic variable reference. */
652 HOWTO (R_MIPS_TLS_LDM, /* type */
653 0, /* rightshift */
654 2, /* size (0 = byte, 1 = short, 2 = long) */
655 16, /* bitsize */
656 FALSE, /* pc_relative */
657 0, /* bitpos */
658 complain_overflow_signed, /* complain_on_overflow */
659 _bfd_mips_elf_generic_reloc, /* special_function */
660 "R_MIPS_TLS_LDM", /* name */
661 TRUE, /* partial_inplace */
662 0x0000ffff, /* src_mask */
663 0x0000ffff, /* dst_mask */
664 FALSE), /* pcrel_offset */
665
666 /* TLS local dynamic offset. */
667 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
668 0, /* rightshift */
669 2, /* size (0 = byte, 1 = short, 2 = long) */
670 16, /* bitsize */
671 FALSE, /* pc_relative */
672 0, /* bitpos */
673 complain_overflow_signed, /* complain_on_overflow */
674 _bfd_mips_elf_generic_reloc, /* special_function */
675 "R_MIPS_TLS_DTPREL_HI16", /* name */
676 TRUE, /* partial_inplace */
677 0x0000ffff, /* src_mask */
678 0x0000ffff, /* dst_mask */
679 FALSE), /* pcrel_offset */
680
681 /* TLS local dynamic offset. */
682 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
683 0, /* rightshift */
684 2, /* size (0 = byte, 1 = short, 2 = long) */
685 16, /* bitsize */
686 FALSE, /* pc_relative */
687 0, /* bitpos */
688 complain_overflow_signed, /* complain_on_overflow */
689 _bfd_mips_elf_generic_reloc, /* special_function */
690 "R_MIPS_TLS_DTPREL_LO16", /* name */
691 TRUE, /* partial_inplace */
692 0x0000ffff, /* src_mask */
693 0x0000ffff, /* dst_mask */
694 FALSE), /* pcrel_offset */
695
696 /* TLS thread pointer offset. */
697 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
698 0, /* rightshift */
699 2, /* size (0 = byte, 1 = short, 2 = long) */
700 16, /* bitsize */
701 FALSE, /* pc_relative */
702 0, /* bitpos */
703 complain_overflow_signed, /* complain_on_overflow */
704 _bfd_mips_elf_generic_reloc, /* special_function */
705 "R_MIPS_TLS_GOTTPREL", /* name */
706 TRUE, /* partial_inplace */
707 0x0000ffff, /* src_mask */
708 0x0000ffff, /* dst_mask */
709 FALSE), /* pcrel_offset */
710
711 /* TLS IE dynamic relocations. */
712 HOWTO (R_MIPS_TLS_TPREL32, /* type */
713 0, /* rightshift */
714 2, /* size (0 = byte, 1 = short, 2 = long) */
715 32, /* bitsize */
716 FALSE, /* pc_relative */
717 0, /* bitpos */
718 complain_overflow_dont, /* complain_on_overflow */
719 _bfd_mips_elf_generic_reloc, /* special_function */
720 "R_MIPS_TLS_TPREL32", /* name */
721 TRUE, /* partial_inplace */
722 0xffffffff, /* src_mask */
723 0xffffffff, /* dst_mask */
724 FALSE), /* pcrel_offset */
725
726 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
727
728 /* TLS thread pointer offset. */
729 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
730 0, /* rightshift */
731 2, /* size (0 = byte, 1 = short, 2 = long) */
732 16, /* bitsize */
733 FALSE, /* pc_relative */
734 0, /* bitpos */
735 complain_overflow_signed, /* complain_on_overflow */
736 _bfd_mips_elf_generic_reloc, /* special_function */
737 "R_MIPS_TLS_TPREL_HI16", /* name */
738 TRUE, /* partial_inplace */
739 0x0000ffff, /* src_mask */
740 0x0000ffff, /* dst_mask */
741 FALSE), /* pcrel_offset */
742
743 /* TLS thread pointer offset. */
744 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
745 0, /* rightshift */
746 2, /* size (0 = byte, 1 = short, 2 = long) */
747 16, /* bitsize */
748 FALSE, /* pc_relative */
749 0, /* bitpos */
750 complain_overflow_signed, /* complain_on_overflow */
751 _bfd_mips_elf_generic_reloc, /* special_function */
752 "R_MIPS_TLS_TPREL_LO16", /* name */
753 TRUE, /* partial_inplace */
754 0x0000ffff, /* src_mask */
755 0x0000ffff, /* dst_mask */
756 FALSE), /* pcrel_offset */
757
758 /* 32 bit relocation with no addend. */
759 HOWTO (R_MIPS_GLOB_DAT, /* type */
760 0, /* rightshift */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
762 32, /* bitsize */
763 FALSE, /* pc_relative */
764 0, /* bitpos */
765 complain_overflow_dont, /* complain_on_overflow */
766 _bfd_mips_elf_generic_reloc, /* special_function */
767 "R_MIPS_GLOB_DAT", /* name */
768 FALSE, /* partial_inplace */
769 0x0, /* src_mask */
770 0xffffffff, /* dst_mask */
771 FALSE), /* pcrel_offset */
772 };
773
774 /* The relocation table used for SHT_RELA sections. */
775
776 static reloc_howto_type elf_mips_howto_table_rela[] =
777 {
778 /* No relocation. */
779 HOWTO (R_MIPS_NONE, /* type */
780 0, /* rightshift */
781 0, /* size (0 = byte, 1 = short, 2 = long) */
782 0, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_dont, /* complain_on_overflow */
786 _bfd_mips_elf_generic_reloc, /* special_function */
787 "R_MIPS_NONE", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
793 /* 16 bit relocation. */
794 HOWTO (R_MIPS_16, /* type */
795 0, /* rightshift */
796 2, /* size (0 = byte, 1 = short, 2 = long) */
797 16, /* bitsize */
798 FALSE, /* pc_relative */
799 0, /* bitpos */
800 complain_overflow_signed, /* complain_on_overflow */
801 _bfd_mips_elf_generic_reloc, /* special_function */
802 "R_MIPS_16", /* name */
803 FALSE, /* partial_inplace */
804 0, /* src_mask */
805 0x0000, /* dst_mask */
806 FALSE), /* pcrel_offset */
807
808 /* 32 bit relocation. */
809 HOWTO (R_MIPS_32, /* type */
810 0, /* rightshift */
811 2, /* size (0 = byte, 1 = short, 2 = long) */
812 32, /* bitsize */
813 FALSE, /* pc_relative */
814 0, /* bitpos */
815 complain_overflow_dont, /* complain_on_overflow */
816 _bfd_mips_elf_generic_reloc, /* special_function */
817 "R_MIPS_32", /* name */
818 FALSE, /* partial_inplace */
819 0, /* src_mask */
820 0xffffffff, /* dst_mask */
821 FALSE), /* pcrel_offset */
822
823 /* 32 bit symbol relative relocation. */
824 HOWTO (R_MIPS_REL32, /* type */
825 0, /* rightshift */
826 2, /* size (0 = byte, 1 = short, 2 = long) */
827 32, /* bitsize */
828 FALSE, /* pc_relative */
829 0, /* bitpos */
830 complain_overflow_dont, /* complain_on_overflow */
831 _bfd_mips_elf_generic_reloc, /* special_function */
832 "R_MIPS_REL32", /* name */
833 FALSE, /* partial_inplace */
834 0, /* src_mask */
835 0xffffffff, /* dst_mask */
836 FALSE), /* pcrel_offset */
837
838 /* 26 bit jump address. */
839 HOWTO (R_MIPS_26, /* type */
840 2, /* rightshift */
841 2, /* size (0 = byte, 1 = short, 2 = long) */
842 26, /* bitsize */
843 FALSE, /* pc_relative */
844 0, /* bitpos */
845 complain_overflow_dont, /* complain_on_overflow */
846 /* This needs complex overflow
847 detection, because the upper 36
848 bits must match the PC + 4. */
849 _bfd_mips_elf_generic_reloc, /* special_function */
850 "R_MIPS_26", /* name */
851 FALSE, /* partial_inplace */
852 0, /* src_mask */
853 0x03ffffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
855
856 /* High 16 bits of symbol value. */
857 HOWTO (R_MIPS_HI16, /* type */
858 0, /* rightshift */
859 2, /* size (0 = byte, 1 = short, 2 = long) */
860 16, /* bitsize */
861 FALSE, /* pc_relative */
862 0, /* bitpos */
863 complain_overflow_dont, /* complain_on_overflow */
864 _bfd_mips_elf_generic_reloc, /* special_function */
865 "R_MIPS_HI16", /* name */
866 FALSE, /* partial_inplace */
867 0, /* src_mask */
868 0x0000ffff, /* dst_mask */
869 FALSE), /* pcrel_offset */
870
871 /* Low 16 bits of symbol value. */
872 HOWTO (R_MIPS_LO16, /* type */
873 0, /* rightshift */
874 2, /* size (0 = byte, 1 = short, 2 = long) */
875 16, /* bitsize */
876 FALSE, /* pc_relative */
877 0, /* bitpos */
878 complain_overflow_dont, /* complain_on_overflow */
879 _bfd_mips_elf_generic_reloc, /* special_function */
880 "R_MIPS_LO16", /* name */
881 FALSE, /* partial_inplace */
882 0, /* src_mask */
883 0x0000ffff, /* dst_mask */
884 FALSE), /* pcrel_offset */
885
886 /* GP relative reference. */
887 HOWTO (R_MIPS_GPREL16, /* type */
888 0, /* rightshift */
889 2, /* size (0 = byte, 1 = short, 2 = long) */
890 16, /* bitsize */
891 FALSE, /* pc_relative */
892 0, /* bitpos */
893 complain_overflow_signed, /* complain_on_overflow */
894 mips_elf_gprel16_reloc, /* special_function */
895 "R_MIPS_GPREL16", /* name */
896 FALSE, /* partial_inplace */
897 0, /* src_mask */
898 0x0000ffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
900
901 /* Reference to literal section. */
902 HOWTO (R_MIPS_LITERAL, /* type */
903 0, /* rightshift */
904 2, /* size (0 = byte, 1 = short, 2 = long) */
905 16, /* bitsize */
906 FALSE, /* pc_relative */
907 0, /* bitpos */
908 complain_overflow_signed, /* complain_on_overflow */
909 mips_elf_literal_reloc, /* special_function */
910 "R_MIPS_LITERAL", /* name */
911 FALSE, /* partial_inplace */
912 0, /* src_mask */
913 0x0000ffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
915
916 /* Reference to global offset table. */
917 HOWTO (R_MIPS_GOT16, /* type */
918 0, /* rightshift */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
921 FALSE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_signed, /* complain_on_overflow */
924 _bfd_mips_elf_generic_reloc, /* special_function */
925 "R_MIPS_GOT16", /* name */
926 FALSE, /* partial_inplace */
927 0, /* src_mask */
928 0x0000ffff, /* dst_mask */
929 FALSE), /* pcrel_offset */
930
931 /* 16 bit PC relative reference. Note that the ABI document has a typo
932 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
933 We do the right thing here. */
934 HOWTO (R_MIPS_PC16, /* type */
935 2, /* rightshift */
936 2, /* size (0 = byte, 1 = short, 2 = long) */
937 16, /* bitsize */
938 TRUE, /* pc_relative */
939 0, /* bitpos */
940 complain_overflow_signed, /* complain_on_overflow */
941 _bfd_mips_elf_generic_reloc, /* special_function */
942 "R_MIPS_PC16", /* name */
943 FALSE, /* partial_inplace */
944 0, /* src_mask */
945 0x0000ffff, /* dst_mask */
946 TRUE), /* pcrel_offset */
947
948 /* 16 bit call through global offset table. */
949 HOWTO (R_MIPS_CALL16, /* type */
950 0, /* rightshift */
951 2, /* size (0 = byte, 1 = short, 2 = long) */
952 16, /* bitsize */
953 FALSE, /* pc_relative */
954 0, /* bitpos */
955 complain_overflow_signed, /* complain_on_overflow */
956 _bfd_mips_elf_generic_reloc, /* special_function */
957 "R_MIPS_CALL16", /* name */
958 FALSE, /* partial_inplace */
959 0, /* src_mask */
960 0x0000ffff, /* dst_mask */
961 FALSE), /* pcrel_offset */
962
963 /* 32 bit GP relative reference. */
964 HOWTO (R_MIPS_GPREL32, /* type */
965 0, /* rightshift */
966 2, /* size (0 = byte, 1 = short, 2 = long) */
967 32, /* bitsize */
968 FALSE, /* pc_relative */
969 0, /* bitpos */
970 complain_overflow_dont, /* complain_on_overflow */
971 mips_elf_gprel32_reloc, /* special_function */
972 "R_MIPS_GPREL32", /* name */
973 FALSE, /* partial_inplace */
974 0, /* src_mask */
975 0xffffffff, /* dst_mask */
976 FALSE), /* pcrel_offset */
977
978 EMPTY_HOWTO (13),
979 EMPTY_HOWTO (14),
980 EMPTY_HOWTO (15),
981
982 /* A 5 bit shift field. */
983 HOWTO (R_MIPS_SHIFT5, /* type */
984 0, /* rightshift */
985 2, /* size (0 = byte, 1 = short, 2 = long) */
986 5, /* bitsize */
987 FALSE, /* pc_relative */
988 6, /* bitpos */
989 complain_overflow_bitfield, /* complain_on_overflow */
990 _bfd_mips_elf_generic_reloc, /* special_function */
991 "R_MIPS_SHIFT5", /* name */
992 FALSE, /* partial_inplace */
993 0, /* src_mask */
994 0x000007c0, /* dst_mask */
995 FALSE), /* pcrel_offset */
996
997 /* A 6 bit shift field. */
998 HOWTO (R_MIPS_SHIFT6, /* type */
999 0, /* rightshift */
1000 2, /* size (0 = byte, 1 = short, 2 = long) */
1001 6, /* bitsize */
1002 FALSE, /* pc_relative */
1003 6, /* bitpos */
1004 complain_overflow_bitfield, /* complain_on_overflow */
1005 mips_elf_shift6_reloc, /* special_function */
1006 "R_MIPS_SHIFT6", /* name */
1007 FALSE, /* partial_inplace */
1008 0, /* src_mask */
1009 0x000007c4, /* dst_mask */
1010 FALSE), /* pcrel_offset */
1011
1012 /* 64 bit relocation. */
1013 HOWTO (R_MIPS_64, /* type */
1014 0, /* rightshift */
1015 4, /* size (0 = byte, 1 = short, 2 = long) */
1016 64, /* bitsize */
1017 FALSE, /* pc_relative */
1018 0, /* bitpos */
1019 complain_overflow_dont, /* complain_on_overflow */
1020 _bfd_mips_elf_generic_reloc, /* special_function */
1021 "R_MIPS_64", /* name */
1022 FALSE, /* partial_inplace */
1023 0, /* src_mask */
1024 MINUS_ONE, /* dst_mask */
1025 FALSE), /* pcrel_offset */
1026
1027 /* Displacement in the global offset table. */
1028 HOWTO (R_MIPS_GOT_DISP, /* type */
1029 0, /* rightshift */
1030 2, /* size (0 = byte, 1 = short, 2 = long) */
1031 16, /* bitsize */
1032 FALSE, /* pc_relative */
1033 0, /* bitpos */
1034 complain_overflow_signed, /* complain_on_overflow */
1035 _bfd_mips_elf_generic_reloc, /* special_function */
1036 "R_MIPS_GOT_DISP", /* name */
1037 FALSE, /* partial_inplace */
1038 0, /* src_mask */
1039 0x0000ffff, /* dst_mask */
1040 FALSE), /* pcrel_offset */
1041
1042 /* Displacement to page pointer in the global offset table. */
1043 HOWTO (R_MIPS_GOT_PAGE, /* type */
1044 0, /* rightshift */
1045 2, /* size (0 = byte, 1 = short, 2 = long) */
1046 16, /* bitsize */
1047 FALSE, /* pc_relative */
1048 0, /* bitpos */
1049 complain_overflow_signed, /* complain_on_overflow */
1050 _bfd_mips_elf_generic_reloc, /* special_function */
1051 "R_MIPS_GOT_PAGE", /* name */
1052 FALSE, /* partial_inplace */
1053 0, /* src_mask */
1054 0x0000ffff, /* dst_mask */
1055 FALSE), /* pcrel_offset */
1056
1057 /* Offset from page pointer in the global offset table. */
1058 HOWTO (R_MIPS_GOT_OFST, /* type */
1059 0, /* rightshift */
1060 2, /* size (0 = byte, 1 = short, 2 = long) */
1061 16, /* bitsize */
1062 FALSE, /* pc_relative */
1063 0, /* bitpos */
1064 complain_overflow_signed, /* complain_on_overflow */
1065 _bfd_mips_elf_generic_reloc, /* special_function */
1066 "R_MIPS_GOT_OFST", /* name */
1067 FALSE, /* partial_inplace */
1068 0, /* src_mask */
1069 0x0000ffff, /* dst_mask */
1070 FALSE), /* pcrel_offset */
1071
1072 /* High 16 bits of displacement in global offset table. */
1073 HOWTO (R_MIPS_GOT_HI16, /* type */
1074 0, /* rightshift */
1075 2, /* size (0 = byte, 1 = short, 2 = long) */
1076 16, /* bitsize */
1077 FALSE, /* pc_relative */
1078 0, /* bitpos */
1079 complain_overflow_dont, /* complain_on_overflow */
1080 _bfd_mips_elf_generic_reloc, /* special_function */
1081 "R_MIPS_GOT_HI16", /* name */
1082 FALSE, /* partial_inplace */
1083 0, /* src_mask */
1084 0x0000ffff, /* dst_mask */
1085 FALSE), /* pcrel_offset */
1086
1087 /* Low 16 bits of displacement in global offset table. */
1088 HOWTO (R_MIPS_GOT_LO16, /* type */
1089 0, /* rightshift */
1090 2, /* size (0 = byte, 1 = short, 2 = long) */
1091 16, /* bitsize */
1092 FALSE, /* pc_relative */
1093 0, /* bitpos */
1094 complain_overflow_dont, /* complain_on_overflow */
1095 _bfd_mips_elf_generic_reloc, /* special_function */
1096 "R_MIPS_GOT_LO16", /* name */
1097 FALSE, /* partial_inplace */
1098 0, /* src_mask */
1099 0x0000ffff, /* dst_mask */
1100 FALSE), /* pcrel_offset */
1101
1102 /* 64 bit subtraction. */
1103 HOWTO (R_MIPS_SUB, /* type */
1104 0, /* rightshift */
1105 4, /* size (0 = byte, 1 = short, 2 = long) */
1106 64, /* bitsize */
1107 FALSE, /* pc_relative */
1108 0, /* bitpos */
1109 complain_overflow_dont, /* complain_on_overflow */
1110 _bfd_mips_elf_generic_reloc, /* special_function */
1111 "R_MIPS_SUB", /* name */
1112 FALSE, /* partial_inplace */
1113 0, /* src_mask */
1114 MINUS_ONE, /* dst_mask */
1115 FALSE), /* pcrel_offset */
1116
1117 /* Insert the addend as an instruction. */
1118 /* FIXME: Not handled correctly. */
1119 HOWTO (R_MIPS_INSERT_A, /* type */
1120 0, /* rightshift */
1121 2, /* size (0 = byte, 1 = short, 2 = long) */
1122 32, /* bitsize */
1123 FALSE, /* pc_relative */
1124 0, /* bitpos */
1125 complain_overflow_dont, /* complain_on_overflow */
1126 _bfd_mips_elf_generic_reloc, /* special_function */
1127 "R_MIPS_INSERT_A", /* name */
1128 FALSE, /* partial_inplace */
1129 0, /* src_mask */
1130 0xffffffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1132
1133 /* Insert the addend as an instruction, and change all relocations
1134 to refer to the old instruction at the address. */
1135 /* FIXME: Not handled correctly. */
1136 HOWTO (R_MIPS_INSERT_B, /* type */
1137 0, /* rightshift */
1138 2, /* size (0 = byte, 1 = short, 2 = long) */
1139 32, /* bitsize */
1140 FALSE, /* pc_relative */
1141 0, /* bitpos */
1142 complain_overflow_dont, /* complain_on_overflow */
1143 _bfd_mips_elf_generic_reloc, /* special_function */
1144 "R_MIPS_INSERT_B", /* name */
1145 FALSE, /* partial_inplace */
1146 0, /* src_mask */
1147 0xffffffff, /* dst_mask */
1148 FALSE), /* pcrel_offset */
1149
1150 /* Delete a 32 bit instruction. */
1151 /* FIXME: Not handled correctly. */
1152 HOWTO (R_MIPS_DELETE, /* type */
1153 0, /* rightshift */
1154 2, /* size (0 = byte, 1 = short, 2 = long) */
1155 32, /* bitsize */
1156 FALSE, /* pc_relative */
1157 0, /* bitpos */
1158 complain_overflow_dont, /* complain_on_overflow */
1159 _bfd_mips_elf_generic_reloc, /* special_function */
1160 "R_MIPS_DELETE", /* name */
1161 FALSE, /* partial_inplace */
1162 0, /* src_mask */
1163 0xffffffff, /* dst_mask */
1164 FALSE), /* pcrel_offset */
1165
1166 /* Get the higher value of a 64 bit addend. */
1167 HOWTO (R_MIPS_HIGHER, /* type */
1168 0, /* rightshift */
1169 2, /* size (0 = byte, 1 = short, 2 = long) */
1170 16, /* bitsize */
1171 FALSE, /* pc_relative */
1172 0, /* bitpos */
1173 complain_overflow_dont, /* complain_on_overflow */
1174 _bfd_mips_elf_generic_reloc, /* special_function */
1175 "R_MIPS_HIGHER", /* name */
1176 FALSE, /* partial_inplace */
1177 0, /* src_mask */
1178 0x0000ffff, /* dst_mask */
1179 FALSE), /* pcrel_offset */
1180
1181 /* Get the highest value of a 64 bit addend. */
1182 HOWTO (R_MIPS_HIGHEST, /* type */
1183 0, /* rightshift */
1184 2, /* size (0 = byte, 1 = short, 2 = long) */
1185 16, /* bitsize */
1186 FALSE, /* pc_relative */
1187 0, /* bitpos */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 _bfd_mips_elf_generic_reloc, /* special_function */
1190 "R_MIPS_HIGHEST", /* name */
1191 FALSE, /* partial_inplace */
1192 0, /* src_mask */
1193 0x0000ffff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1195
1196 /* High 16 bits of displacement in global offset table. */
1197 HOWTO (R_MIPS_CALL_HI16, /* type */
1198 0, /* rightshift */
1199 2, /* size (0 = byte, 1 = short, 2 = long) */
1200 16, /* bitsize */
1201 FALSE, /* pc_relative */
1202 0, /* bitpos */
1203 complain_overflow_dont, /* complain_on_overflow */
1204 _bfd_mips_elf_generic_reloc, /* special_function */
1205 "R_MIPS_CALL_HI16", /* name */
1206 FALSE, /* partial_inplace */
1207 0, /* src_mask */
1208 0x0000ffff, /* dst_mask */
1209 FALSE), /* pcrel_offset */
1210
1211 /* Low 16 bits of displacement in global offset table. */
1212 HOWTO (R_MIPS_CALL_LO16, /* type */
1213 0, /* rightshift */
1214 2, /* size (0 = byte, 1 = short, 2 = long) */
1215 16, /* bitsize */
1216 FALSE, /* pc_relative */
1217 0, /* bitpos */
1218 complain_overflow_dont, /* complain_on_overflow */
1219 _bfd_mips_elf_generic_reloc, /* special_function */
1220 "R_MIPS_CALL_LO16", /* name */
1221 FALSE, /* partial_inplace */
1222 0, /* src_mask */
1223 0x0000ffff, /* dst_mask */
1224 FALSE), /* pcrel_offset */
1225
1226 /* Section displacement, used by an associated event location section. */
1227 HOWTO (R_MIPS_SCN_DISP, /* type */
1228 0, /* rightshift */
1229 2, /* size (0 = byte, 1 = short, 2 = long) */
1230 32, /* bitsize */
1231 FALSE, /* pc_relative */
1232 0, /* bitpos */
1233 complain_overflow_dont, /* complain_on_overflow */
1234 _bfd_mips_elf_generic_reloc, /* special_function */
1235 "R_MIPS_SCN_DISP", /* name */
1236 FALSE, /* partial_inplace */
1237 0, /* src_mask */
1238 0xffffffff, /* dst_mask */
1239 FALSE), /* pcrel_offset */
1240
1241 /* 16 bit relocation. */
1242 HOWTO (R_MIPS_REL16, /* type */
1243 0, /* rightshift */
1244 1, /* size (0 = byte, 1 = short, 2 = long) */
1245 16, /* bitsize */
1246 FALSE, /* pc_relative */
1247 0, /* bitpos */
1248 complain_overflow_signed, /* complain_on_overflow */
1249 _bfd_mips_elf_generic_reloc, /* special_function */
1250 "R_MIPS_REL16", /* name */
1251 FALSE, /* partial_inplace */
1252 0, /* src_mask */
1253 0xffff, /* dst_mask */
1254 FALSE), /* pcrel_offset */
1255
1256 /* These two are obsolete. */
1257 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
1258 EMPTY_HOWTO (R_MIPS_PJUMP),
1259
1260 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
1261 It must be used for multigot GOT's (and only there). */
1262 HOWTO (R_MIPS_RELGOT, /* 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_RELGOT", /* name */
1271 FALSE, /* partial_inplace */
1272 0, /* src_mask */
1273 0xffffffff, /* dst_mask */
1274 FALSE), /* pcrel_offset */
1275
1276 /* Protected jump conversion. This is an optimization hint. No
1277 relocation is required for correctness. */
1278 HOWTO (R_MIPS_JALR, /* type */
1279 0, /* rightshift */
1280 2, /* size (0 = byte, 1 = short, 2 = long) */
1281 32, /* bitsize */
1282 FALSE, /* pc_relative */
1283 0, /* bitpos */
1284 complain_overflow_dont, /* complain_on_overflow */
1285 _bfd_mips_elf_generic_reloc, /* special_function */
1286 "R_MIPS_JALR", /* name */
1287 FALSE, /* partial_inplace */
1288 0, /* src_mask */
1289 0, /* dst_mask */
1290 FALSE), /* pcrel_offset */
1291
1292 /* TLS GD/LD dynamic relocations. */
1293 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
1294 0, /* rightshift */
1295 2, /* size (0 = byte, 1 = short, 2 = long) */
1296 32, /* bitsize */
1297 FALSE, /* pc_relative */
1298 0, /* bitpos */
1299 complain_overflow_dont, /* complain_on_overflow */
1300 _bfd_mips_elf_generic_reloc, /* special_function */
1301 "R_MIPS_TLS_DTPMOD32", /* name */
1302 TRUE, /* partial_inplace */
1303 0xffffffff, /* src_mask */
1304 0xffffffff, /* dst_mask */
1305 FALSE), /* pcrel_offset */
1306
1307 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
1308 0, /* rightshift */
1309 2, /* size (0 = byte, 1 = short, 2 = long) */
1310 32, /* bitsize */
1311 FALSE, /* pc_relative */
1312 0, /* bitpos */
1313 complain_overflow_dont, /* complain_on_overflow */
1314 _bfd_mips_elf_generic_reloc, /* special_function */
1315 "R_MIPS_TLS_DTPREL32", /* name */
1316 TRUE, /* partial_inplace */
1317 0xffffffff, /* src_mask */
1318 0xffffffff, /* dst_mask */
1319 FALSE), /* pcrel_offset */
1320
1321 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
1322 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
1323
1324 /* TLS general dynamic variable reference. */
1325 HOWTO (R_MIPS_TLS_GD, /* type */
1326 0, /* rightshift */
1327 2, /* size (0 = byte, 1 = short, 2 = long) */
1328 16, /* bitsize */
1329 FALSE, /* pc_relative */
1330 0, /* bitpos */
1331 complain_overflow_signed, /* complain_on_overflow */
1332 _bfd_mips_elf_generic_reloc, /* special_function */
1333 "R_MIPS_TLS_GD", /* name */
1334 TRUE, /* partial_inplace */
1335 0x0000ffff, /* src_mask */
1336 0x0000ffff, /* dst_mask */
1337 FALSE), /* pcrel_offset */
1338
1339 /* TLS local dynamic variable reference. */
1340 HOWTO (R_MIPS_TLS_LDM, /* type */
1341 0, /* rightshift */
1342 2, /* size (0 = byte, 1 = short, 2 = long) */
1343 16, /* bitsize */
1344 FALSE, /* pc_relative */
1345 0, /* bitpos */
1346 complain_overflow_signed, /* complain_on_overflow */
1347 _bfd_mips_elf_generic_reloc, /* special_function */
1348 "R_MIPS_TLS_LDM", /* name */
1349 TRUE, /* partial_inplace */
1350 0x0000ffff, /* src_mask */
1351 0x0000ffff, /* dst_mask */
1352 FALSE), /* pcrel_offset */
1353
1354 /* TLS local dynamic offset. */
1355 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
1356 0, /* rightshift */
1357 2, /* size (0 = byte, 1 = short, 2 = long) */
1358 16, /* bitsize */
1359 FALSE, /* pc_relative */
1360 0, /* bitpos */
1361 complain_overflow_signed, /* complain_on_overflow */
1362 _bfd_mips_elf_generic_reloc, /* special_function */
1363 "R_MIPS_TLS_DTPREL_HI16", /* name */
1364 TRUE, /* partial_inplace */
1365 0x0000ffff, /* src_mask */
1366 0x0000ffff, /* dst_mask */
1367 FALSE), /* pcrel_offset */
1368
1369 /* TLS local dynamic offset. */
1370 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
1371 0, /* rightshift */
1372 2, /* size (0 = byte, 1 = short, 2 = long) */
1373 16, /* bitsize */
1374 FALSE, /* pc_relative */
1375 0, /* bitpos */
1376 complain_overflow_signed, /* complain_on_overflow */
1377 _bfd_mips_elf_generic_reloc, /* special_function */
1378 "R_MIPS_TLS_DTPREL_LO16", /* name */
1379 TRUE, /* partial_inplace */
1380 0x0000ffff, /* src_mask */
1381 0x0000ffff, /* dst_mask */
1382 FALSE), /* pcrel_offset */
1383
1384 /* TLS thread pointer offset. */
1385 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
1386 0, /* rightshift */
1387 2, /* size (0 = byte, 1 = short, 2 = long) */
1388 16, /* bitsize */
1389 FALSE, /* pc_relative */
1390 0, /* bitpos */
1391 complain_overflow_signed, /* complain_on_overflow */
1392 _bfd_mips_elf_generic_reloc, /* special_function */
1393 "R_MIPS_TLS_GOTTPREL", /* name */
1394 TRUE, /* partial_inplace */
1395 0x0000ffff, /* src_mask */
1396 0x0000ffff, /* dst_mask */
1397 FALSE), /* pcrel_offset */
1398
1399 /* TLS IE dynamic relocations. */
1400 HOWTO (R_MIPS_TLS_TPREL32, /* type */
1401 0, /* rightshift */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1403 32, /* bitsize */
1404 FALSE, /* pc_relative */
1405 0, /* bitpos */
1406 complain_overflow_dont, /* complain_on_overflow */
1407 _bfd_mips_elf_generic_reloc, /* special_function */
1408 "R_MIPS_TLS_TPREL32", /* name */
1409 TRUE, /* partial_inplace */
1410 0xffffffff, /* src_mask */
1411 0xffffffff, /* dst_mask */
1412 FALSE), /* pcrel_offset */
1413
1414 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
1415
1416 /* TLS thread pointer offset. */
1417 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
1418 0, /* rightshift */
1419 2, /* size (0 = byte, 1 = short, 2 = long) */
1420 16, /* bitsize */
1421 FALSE, /* pc_relative */
1422 0, /* bitpos */
1423 complain_overflow_signed, /* complain_on_overflow */
1424 _bfd_mips_elf_generic_reloc, /* special_function */
1425 "R_MIPS_TLS_TPREL_HI16", /* name */
1426 TRUE, /* partial_inplace */
1427 0x0000ffff, /* src_mask */
1428 0x0000ffff, /* dst_mask */
1429 FALSE), /* pcrel_offset */
1430
1431 /* TLS thread pointer offset. */
1432 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
1433 0, /* rightshift */
1434 2, /* size (0 = byte, 1 = short, 2 = long) */
1435 16, /* bitsize */
1436 FALSE, /* pc_relative */
1437 0, /* bitpos */
1438 complain_overflow_signed, /* complain_on_overflow */
1439 _bfd_mips_elf_generic_reloc, /* special_function */
1440 "R_MIPS_TLS_TPREL_LO16", /* name */
1441 TRUE, /* partial_inplace */
1442 0x0000ffff, /* src_mask */
1443 0x0000ffff, /* dst_mask */
1444 FALSE), /* pcrel_offset */
1445
1446 /* 32 bit relocation with no addend. */
1447 HOWTO (R_MIPS_GLOB_DAT, /* type */
1448 0, /* rightshift */
1449 2, /* size (0 = byte, 1 = short, 2 = long) */
1450 32, /* bitsize */
1451 FALSE, /* pc_relative */
1452 0, /* bitpos */
1453 complain_overflow_dont, /* complain_on_overflow */
1454 _bfd_mips_elf_generic_reloc, /* special_function */
1455 "R_MIPS_GLOB_DAT", /* name */
1456 FALSE, /* partial_inplace */
1457 0x0, /* src_mask */
1458 0xffffffff, /* dst_mask */
1459 FALSE), /* pcrel_offset */
1460 };
1461
1462 static reloc_howto_type elf_mips16_howto_table_rel[] =
1463 {
1464 /* The reloc used for the mips16 jump instruction. */
1465 HOWTO (R_MIPS16_26, /* type */
1466 2, /* rightshift */
1467 2, /* size (0 = byte, 1 = short, 2 = long) */
1468 26, /* bitsize */
1469 FALSE, /* pc_relative */
1470 0, /* bitpos */
1471 complain_overflow_dont, /* complain_on_overflow */
1472 /* This needs complex overflow
1473 detection, because the upper four
1474 bits must match the PC. */
1475 _bfd_mips_elf_generic_reloc, /* special_function */
1476 "R_MIPS16_26", /* name */
1477 TRUE, /* partial_inplace */
1478 0x3ffffff, /* src_mask */
1479 0x3ffffff, /* dst_mask */
1480 FALSE), /* pcrel_offset */
1481
1482 /* The reloc used for the mips16 gprel instruction. */
1483 HOWTO (R_MIPS16_GPREL, /* type */
1484 0, /* rightshift */
1485 2, /* size (0 = byte, 1 = short, 2 = long) */
1486 16, /* bitsize */
1487 FALSE, /* pc_relative */
1488 0, /* bitpos */
1489 complain_overflow_signed, /* complain_on_overflow */
1490 mips16_gprel_reloc, /* special_function */
1491 "R_MIPS16_GPREL", /* name */
1492 TRUE, /* partial_inplace */
1493 0x0000ffff, /* src_mask */
1494 0x0000ffff, /* dst_mask */
1495 FALSE), /* pcrel_offset */
1496
1497 /* A placeholder for MIPS16 reference to global offset table. */
1498 EMPTY_HOWTO (R_MIPS16_GOT16),
1499
1500 /* A placeholder for MIPS16 16 bit call through global offset table. */
1501 EMPTY_HOWTO (R_MIPS16_CALL16),
1502
1503 /* MIPS16 high 16 bits of symbol value. */
1504 HOWTO (R_MIPS16_HI16, /* type */
1505 16, /* rightshift */
1506 2, /* size (0 = byte, 1 = short, 2 = long) */
1507 16, /* bitsize */
1508 FALSE, /* pc_relative */
1509 0, /* bitpos */
1510 complain_overflow_dont, /* complain_on_overflow */
1511 _bfd_mips_elf_hi16_reloc, /* special_function */
1512 "R_MIPS16_HI16", /* name */
1513 TRUE, /* partial_inplace */
1514 0x0000ffff, /* src_mask */
1515 0x0000ffff, /* dst_mask */
1516 FALSE), /* pcrel_offset */
1517
1518 /* MIPS16 low 16 bits of symbol value. */
1519 HOWTO (R_MIPS16_LO16, /* type */
1520 0, /* rightshift */
1521 2, /* size (0 = byte, 1 = short, 2 = long) */
1522 16, /* bitsize */
1523 FALSE, /* pc_relative */
1524 0, /* bitpos */
1525 complain_overflow_dont, /* complain_on_overflow */
1526 _bfd_mips_elf_lo16_reloc, /* special_function */
1527 "R_MIPS16_LO16", /* name */
1528 TRUE, /* partial_inplace */
1529 0x0000ffff, /* src_mask */
1530 0x0000ffff, /* dst_mask */
1531 FALSE), /* pcrel_offset */
1532 };
1533
1534 static reloc_howto_type elf_mips16_howto_table_rela[] =
1535 {
1536 /* The reloc used for the mips16 jump instruction. */
1537 HOWTO (R_MIPS16_26, /* type */
1538 2, /* rightshift */
1539 2, /* size (0 = byte, 1 = short, 2 = long) */
1540 26, /* bitsize */
1541 FALSE, /* pc_relative */
1542 0, /* bitpos */
1543 complain_overflow_dont, /* complain_on_overflow */
1544 /* This needs complex overflow
1545 detection, because the upper four
1546 bits must match the PC. */
1547 _bfd_mips_elf_generic_reloc, /* special_function */
1548 "R_MIPS16_26", /* name */
1549 FALSE, /* partial_inplace */
1550 0x3ffffff, /* src_mask */
1551 0x3ffffff, /* dst_mask */
1552 FALSE), /* pcrel_offset */
1553
1554 /* The reloc used for the mips16 gprel instruction. */
1555 HOWTO (R_MIPS16_GPREL, /* type */
1556 0, /* rightshift */
1557 2, /* size (0 = byte, 1 = short, 2 = long) */
1558 16, /* bitsize */
1559 FALSE, /* pc_relative */
1560 0, /* bitpos */
1561 complain_overflow_signed, /* complain_on_overflow */
1562 mips16_gprel_reloc, /* special_function */
1563 "R_MIPS16_GPREL", /* name */
1564 FALSE, /* partial_inplace */
1565 0x0000ffff, /* src_mask */
1566 0x0000ffff, /* dst_mask */
1567 FALSE), /* pcrel_offset */
1568
1569 /* A placeholder for MIPS16 reference to global offset table. */
1570 EMPTY_HOWTO (R_MIPS16_GOT16),
1571
1572 /* A placeholder for MIPS16 16 bit call through global offset table. */
1573 EMPTY_HOWTO (R_MIPS16_CALL16),
1574
1575 /* MIPS16 high 16 bits of symbol value. */
1576 HOWTO (R_MIPS16_HI16, /* type */
1577 16, /* rightshift */
1578 2, /* size (0 = byte, 1 = short, 2 = long) */
1579 16, /* bitsize */
1580 FALSE, /* pc_relative */
1581 0, /* bitpos */
1582 complain_overflow_dont, /* complain_on_overflow */
1583 _bfd_mips_elf_hi16_reloc, /* special_function */
1584 "R_MIPS16_HI16", /* name */
1585 FALSE, /* partial_inplace */
1586 0x0000ffff, /* src_mask */
1587 0x0000ffff, /* dst_mask */
1588 FALSE), /* pcrel_offset */
1589
1590 /* MIPS16 low 16 bits of symbol value. */
1591 HOWTO (R_MIPS16_LO16, /* type */
1592 0, /* rightshift */
1593 2, /* size (0 = byte, 1 = short, 2 = long) */
1594 16, /* bitsize */
1595 FALSE, /* pc_relative */
1596 0, /* bitpos */
1597 complain_overflow_dont, /* complain_on_overflow */
1598 _bfd_mips_elf_lo16_reloc, /* special_function */
1599 "R_MIPS16_LO16", /* name */
1600 FALSE, /* partial_inplace */
1601 0x0000ffff, /* src_mask */
1602 0x0000ffff, /* dst_mask */
1603 FALSE), /* pcrel_offset */
1604 };
1605
1606 /* GNU extension to record C++ vtable hierarchy */
1607 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1608 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1609 0, /* rightshift */
1610 2, /* size (0 = byte, 1 = short, 2 = long) */
1611 0, /* bitsize */
1612 FALSE, /* pc_relative */
1613 0, /* bitpos */
1614 complain_overflow_dont, /* complain_on_overflow */
1615 NULL, /* special_function */
1616 "R_MIPS_GNU_VTINHERIT", /* name */
1617 FALSE, /* partial_inplace */
1618 0, /* src_mask */
1619 0, /* dst_mask */
1620 FALSE); /* pcrel_offset */
1621
1622 /* GNU extension to record C++ vtable member usage */
1623 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1624 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1625 0, /* rightshift */
1626 2, /* size (0 = byte, 1 = short, 2 = long) */
1627 0, /* bitsize */
1628 FALSE, /* pc_relative */
1629 0, /* bitpos */
1630 complain_overflow_dont, /* complain_on_overflow */
1631 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1632 "R_MIPS_GNU_VTENTRY", /* name */
1633 FALSE, /* partial_inplace */
1634 0, /* src_mask */
1635 0, /* dst_mask */
1636 FALSE); /* pcrel_offset */
1637
1638 /* 16 bit offset for pc-relative branches. */
1639 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1640 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1641 2, /* rightshift */
1642 2, /* size (0 = byte, 1 = short, 2 = long) */
1643 16, /* bitsize */
1644 TRUE, /* pc_relative */
1645 0, /* bitpos */
1646 complain_overflow_signed, /* complain_on_overflow */
1647 _bfd_mips_elf_generic_reloc, /* special_function */
1648 "R_MIPS_GNU_REL16_S2", /* name */
1649 TRUE, /* partial_inplace */
1650 0x0000ffff, /* src_mask */
1651 0x0000ffff, /* dst_mask */
1652 TRUE); /* pcrel_offset */
1653
1654 /* 16 bit offset for pc-relative branches. */
1655 static reloc_howto_type elf_mips_gnu_rela16_s2 =
1656 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1657 2, /* rightshift */
1658 2, /* size (0 = byte, 1 = short, 2 = long) */
1659 16, /* bitsize */
1660 TRUE, /* pc_relative */
1661 0, /* bitpos */
1662 complain_overflow_signed, /* complain_on_overflow */
1663 _bfd_mips_elf_generic_reloc, /* special_function */
1664 "R_MIPS_GNU_REL16_S2", /* name */
1665 FALSE, /* partial_inplace */
1666 0, /* src_mask */
1667 0x0000ffff, /* dst_mask */
1668 TRUE); /* pcrel_offset */
1669
1670 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
1671 dangerous relocation. */
1672
1673 static bfd_boolean
mips_elf_assign_gp(bfd * output_bfd,bfd_vma * pgp)1674 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
1675 {
1676 unsigned int count;
1677 asymbol **sym;
1678 unsigned int i;
1679
1680 /* If we've already figured out what GP will be, just return it. */
1681 *pgp = _bfd_get_gp_value (output_bfd);
1682 if (*pgp)
1683 return TRUE;
1684
1685 count = bfd_get_symcount (output_bfd);
1686 sym = bfd_get_outsymbols (output_bfd);
1687
1688 /* The linker script will have created a symbol named `_gp' with the
1689 appropriate value. */
1690 if (sym == NULL)
1691 i = count;
1692 else
1693 {
1694 for (i = 0; i < count; i++, sym++)
1695 {
1696 register const char *name;
1697
1698 name = bfd_asymbol_name (*sym);
1699 if (*name == '_' && strcmp (name, "_gp") == 0)
1700 {
1701 *pgp = bfd_asymbol_value (*sym);
1702 _bfd_set_gp_value (output_bfd, *pgp);
1703 break;
1704 }
1705 }
1706 }
1707
1708 if (i >= count)
1709 {
1710 /* Only get the error once. */
1711 *pgp = 4;
1712 _bfd_set_gp_value (output_bfd, *pgp);
1713 return FALSE;
1714 }
1715
1716 return TRUE;
1717 }
1718
1719 /* We have to figure out the gp value, so that we can adjust the
1720 symbol value correctly. We look up the symbol _gp in the output
1721 BFD. If we can't find it, we're stuck. We cache it in the ELF
1722 target data. We don't need to adjust the symbol value for an
1723 external symbol if we are producing relocatable output. */
1724
1725 static bfd_reloc_status_type
mips_elf_final_gp(bfd * output_bfd,asymbol * symbol,bfd_boolean relocatable,char ** error_message,bfd_vma * pgp)1726 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
1727 char **error_message, bfd_vma *pgp)
1728 {
1729 if (bfd_is_und_section (symbol->section)
1730 && ! relocatable)
1731 {
1732 *pgp = 0;
1733 return bfd_reloc_undefined;
1734 }
1735
1736 *pgp = _bfd_get_gp_value (output_bfd);
1737 if (*pgp == 0
1738 && (! relocatable
1739 || (symbol->flags & BSF_SECTION_SYM) != 0))
1740 {
1741 if (relocatable)
1742 {
1743 /* Make up a value. */
1744 *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
1745 _bfd_set_gp_value (output_bfd, *pgp);
1746 }
1747 else if (!mips_elf_assign_gp (output_bfd, pgp))
1748 {
1749 *error_message =
1750 (char *) _("GP relative relocation when _gp not defined");
1751 return bfd_reloc_dangerous;
1752 }
1753 }
1754
1755 return bfd_reloc_ok;
1756 }
1757
1758 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1759 become the offset from the gp register. */
1760
1761 static bfd_reloc_status_type
mips_elf_gprel16_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry,asymbol * symbol,void * data ATTRIBUTE_UNUSED,asection * input_section,bfd * output_bfd,char ** error_message ATTRIBUTE_UNUSED)1762 mips_elf_gprel16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
1763 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
1764 asection *input_section, bfd *output_bfd,
1765 char **error_message ATTRIBUTE_UNUSED)
1766 {
1767 bfd_boolean relocatable;
1768 bfd_reloc_status_type ret;
1769 bfd_vma gp;
1770
1771 if (output_bfd != NULL)
1772 relocatable = TRUE;
1773 else
1774 {
1775 relocatable = FALSE;
1776 output_bfd = symbol->section->output_section->owner;
1777 }
1778
1779 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1780 &gp);
1781 if (ret != bfd_reloc_ok)
1782 return ret;
1783
1784 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1785 input_section, relocatable,
1786 data, gp);
1787 }
1788
1789 /* Do a R_MIPS_LITERAL relocation. */
1790
1791 static bfd_reloc_status_type
mips_elf_literal_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1792 mips_elf_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1793 void *data, asection *input_section, bfd *output_bfd,
1794 char **error_message)
1795 {
1796 bfd_boolean relocatable;
1797 bfd_reloc_status_type ret;
1798 bfd_vma gp;
1799
1800 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1801 if (output_bfd != NULL
1802 && (symbol->flags & BSF_SECTION_SYM) == 0
1803 && (symbol->flags & BSF_LOCAL) != 0)
1804 {
1805 *error_message = (char *)
1806 _("literal relocation occurs for an external symbol");
1807 return bfd_reloc_outofrange;
1808 }
1809
1810 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
1811 if (output_bfd != NULL)
1812 relocatable = TRUE;
1813 else
1814 {
1815 relocatable = FALSE;
1816 output_bfd = symbol->section->output_section->owner;
1817 }
1818
1819 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1820 &gp);
1821 if (ret != bfd_reloc_ok)
1822 return ret;
1823
1824 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1825 input_section, relocatable,
1826 data, gp);
1827 }
1828
1829 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1830 become the offset from the gp register. */
1831
1832 static bfd_reloc_status_type
mips_elf_gprel32_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1833 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1834 void *data, asection *input_section, bfd *output_bfd,
1835 char **error_message)
1836 {
1837 bfd_boolean relocatable;
1838 bfd_reloc_status_type ret;
1839 bfd_vma gp;
1840
1841 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1842 if (output_bfd != NULL
1843 && (symbol->flags & BSF_SECTION_SYM) == 0
1844 && (symbol->flags & BSF_LOCAL) != 0)
1845 {
1846 *error_message = (char *)
1847 _("32bits gp relative relocation occurs for an external symbol");
1848 return bfd_reloc_outofrange;
1849 }
1850
1851 if (output_bfd != NULL)
1852 {
1853 relocatable = TRUE;
1854 gp = _bfd_get_gp_value (output_bfd);
1855 }
1856 else
1857 {
1858 relocatable = FALSE;
1859 output_bfd = symbol->section->output_section->owner;
1860
1861 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
1862 error_message, &gp);
1863 if (ret != bfd_reloc_ok)
1864 return ret;
1865 }
1866
1867 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1868 relocatable, data, gp);
1869 }
1870
1871 static bfd_reloc_status_type
gprel32_with_gp(bfd * abfd,asymbol * symbol,arelent * reloc_entry,asection * input_section,bfd_boolean relocatable,void * data,bfd_vma gp)1872 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1873 asection *input_section, bfd_boolean relocatable,
1874 void *data, bfd_vma gp)
1875 {
1876 bfd_vma relocation;
1877 unsigned long val;
1878
1879 if (bfd_is_com_section (symbol->section))
1880 relocation = 0;
1881 else
1882 relocation = symbol->value;
1883
1884 relocation += symbol->section->output_section->vma;
1885 relocation += symbol->section->output_offset;
1886
1887 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1888 return bfd_reloc_outofrange;
1889
1890 if (reloc_entry->howto->src_mask == 0)
1891 val = 0;
1892 else
1893 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1894
1895 /* Set val to the offset into the section or symbol. */
1896 val += reloc_entry->addend;
1897
1898 /* Adjust val for the final section location and GP value. If we
1899 are producing relocatable output, we don't want to do this for
1900 an external symbol. */
1901 if (! relocatable
1902 || (symbol->flags & BSF_SECTION_SYM) != 0)
1903 val += relocation - gp;
1904
1905 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1906
1907 if (relocatable)
1908 reloc_entry->address += input_section->output_offset;
1909
1910 return bfd_reloc_ok;
1911 }
1912
1913 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
1914 the rest is at bits 6-10. The bitpos already got right by the howto. */
1915
1916 static bfd_reloc_status_type
mips_elf_shift6_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1917 mips_elf_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1918 void *data, asection *input_section, bfd *output_bfd,
1919 char **error_message)
1920 {
1921 if (reloc_entry->howto->partial_inplace)
1922 {
1923 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0)
1924 | (reloc_entry->addend & 0x00000800) >> 9);
1925 }
1926
1927 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1928 input_section, output_bfd,
1929 error_message);
1930 }
1931
1932 /* Handle a mips16 GP relative reloc. */
1933
1934 static bfd_reloc_status_type
mips16_gprel_reloc(bfd * abfd,arelent * reloc_entry,asymbol * symbol,void * data,asection * input_section,bfd * output_bfd,char ** error_message)1935 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1936 void *data, asection *input_section, bfd *output_bfd,
1937 char **error_message)
1938 {
1939 bfd_boolean relocatable;
1940 bfd_reloc_status_type ret;
1941 bfd_byte *location;
1942 bfd_vma gp;
1943
1944 /* If we're relocating, and this is an external symbol, we don't want
1945 to change anything. */
1946 if (output_bfd != NULL
1947 && (symbol->flags & BSF_SECTION_SYM) == 0
1948 && (symbol->flags & BSF_LOCAL) != 0)
1949 {
1950 reloc_entry->address += input_section->output_offset;
1951 return bfd_reloc_ok;
1952 }
1953
1954 if (output_bfd != NULL)
1955 relocatable = TRUE;
1956 else
1957 {
1958 relocatable = FALSE;
1959 output_bfd = symbol->section->output_section->owner;
1960 }
1961
1962 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1963 &gp);
1964 if (ret != bfd_reloc_ok)
1965 return ret;
1966
1967 location = (bfd_byte *) data + reloc_entry->address;
1968 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1969 location);
1970 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1971 input_section, relocatable,
1972 data, gp);
1973 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1974 location);
1975
1976 return ret;
1977 }
1978
1979 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1980
1981 struct elf_reloc_map {
1982 bfd_reloc_code_real_type bfd_val;
1983 enum elf_mips_reloc_type elf_val;
1984 };
1985
1986 static const struct elf_reloc_map mips_reloc_map[] =
1987 {
1988 { BFD_RELOC_NONE, R_MIPS_NONE },
1989 { BFD_RELOC_16, R_MIPS_16 },
1990 { BFD_RELOC_32, R_MIPS_32 },
1991 /* There is no BFD reloc for R_MIPS_REL32. */
1992 { BFD_RELOC_CTOR, R_MIPS_32 },
1993 { BFD_RELOC_64, R_MIPS_64 },
1994 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
1995 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1996 { BFD_RELOC_LO16, R_MIPS_LO16 },
1997 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1998 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1999 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
2000 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
2001 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
2002 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
2003 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
2004 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
2005 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
2006 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
2007 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
2008 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
2009 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
2010 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
2011 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
2012 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
2013 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
2014 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
2015 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
2016 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
2017 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
2018 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
2019 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
2020 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
2021 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
2022 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR },
2023 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
2024 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
2025 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
2026 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
2027 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
2028 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
2029 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
2030 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
2031 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
2032 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
2033 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
2034 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
2035 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
2036 };
2037
2038 static const struct elf_reloc_map mips16_reloc_map[] =
2039 {
2040 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
2041 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
2042 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
2043 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
2044 };
2045
2046 /* Given a BFD reloc type, return a howto structure. */
2047
2048 static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)2049 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2050 bfd_reloc_code_real_type code)
2051 {
2052 unsigned int i;
2053 /* FIXME: We default to RELA here instead of choosing the right
2054 relocation variant. */
2055 reloc_howto_type *howto_table = elf_mips_howto_table_rela;
2056 reloc_howto_type *howto16_table = elf_mips16_howto_table_rela;
2057
2058 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
2059 i++)
2060 {
2061 if (mips_reloc_map[i].bfd_val == code)
2062 return &howto_table[(int) mips_reloc_map[i].elf_val];
2063 }
2064
2065 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
2066 i++)
2067 {
2068 if (mips16_reloc_map[i].bfd_val == code)
2069 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
2070 }
2071
2072 switch (code)
2073 {
2074 case BFD_RELOC_VTABLE_INHERIT:
2075 return &elf_mips_gnu_vtinherit_howto;
2076 case BFD_RELOC_VTABLE_ENTRY:
2077 return &elf_mips_gnu_vtentry_howto;
2078 default:
2079 bfd_set_error (bfd_error_bad_value);
2080 return NULL;
2081 }
2082 }
2083
2084 static reloc_howto_type *
bfd_elf32_bfd_reloc_name_lookup(bfd * abfd ATTRIBUTE_UNUSED,const char * r_name)2085 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2086 const char *r_name)
2087 {
2088 unsigned int i;
2089
2090 for (i = 0;
2091 i < (sizeof (elf_mips_howto_table_rela)
2092 / sizeof (elf_mips_howto_table_rela[0]));
2093 i++)
2094 if (elf_mips_howto_table_rela[i].name != NULL
2095 && strcasecmp (elf_mips_howto_table_rela[i].name, r_name) == 0)
2096 return &elf_mips_howto_table_rela[i];
2097
2098 for (i = 0;
2099 i < (sizeof (elf_mips16_howto_table_rela)
2100 / sizeof (elf_mips16_howto_table_rela[0]));
2101 i++)
2102 if (elf_mips16_howto_table_rela[i].name != NULL
2103 && strcasecmp (elf_mips16_howto_table_rela[i].name, r_name) == 0)
2104 return &elf_mips16_howto_table_rela[i];
2105
2106 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
2107 return &elf_mips_gnu_vtinherit_howto;
2108 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
2109 return &elf_mips_gnu_vtentry_howto;
2110 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
2111 return &elf_mips_gnu_rel16_s2;
2112 if (strcasecmp (elf_mips_gnu_rela16_s2.name, r_name) == 0)
2113 return &elf_mips_gnu_rela16_s2;
2114
2115 return NULL;
2116 }
2117
2118 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2119
2120 static reloc_howto_type *
mips_elf_n32_rtype_to_howto(unsigned int r_type,bfd_boolean rela_p)2121 mips_elf_n32_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
2122 {
2123 switch (r_type)
2124 {
2125 case R_MIPS_GNU_VTINHERIT:
2126 return &elf_mips_gnu_vtinherit_howto;
2127 case R_MIPS_GNU_VTENTRY:
2128 return &elf_mips_gnu_vtentry_howto;
2129 case R_MIPS_GNU_REL16_S2:
2130 if (rela_p)
2131 return &elf_mips_gnu_rela16_s2;
2132 else
2133 return &elf_mips_gnu_rel16_s2;
2134 default:
2135 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
2136 {
2137 if (rela_p)
2138 return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min];
2139 else
2140 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
2141 }
2142 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
2143 if (rela_p)
2144 return &elf_mips_howto_table_rela[r_type];
2145 else
2146 return &elf_mips_howto_table_rel[r_type];
2147 break;
2148 }
2149 }
2150
2151 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2152
2153 static void
mips_info_to_howto_rel(bfd * abfd,arelent * cache_ptr,Elf_Internal_Rela * dst)2154 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
2155 {
2156 unsigned int r_type;
2157
2158 r_type = ELF32_R_TYPE (dst->r_info);
2159 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, FALSE);
2160
2161 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
2162 value for the object file. We get the addend now, rather than
2163 when we do the relocation, because the symbol manipulations done
2164 by the linker may cause us to lose track of the input BFD. */
2165 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
2166 && (r_type == (unsigned int) R_MIPS_GPREL16
2167 || r_type == (unsigned int) R_MIPS_LITERAL))
2168 cache_ptr->addend = elf_gp (abfd);
2169 }
2170
2171 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
2172
2173 static void
mips_info_to_howto_rela(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)2174 mips_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
2175 arelent *cache_ptr, Elf_Internal_Rela *dst)
2176 {
2177 unsigned int r_type;
2178
2179 r_type = ELF32_R_TYPE (dst->r_info);
2180 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, TRUE);
2181 cache_ptr->addend = dst->r_addend;
2182 }
2183
2184 /* Determine whether a symbol is global for the purposes of splitting
2185 the symbol table into global symbols and local symbols. At least
2186 on Irix 5, this split must be between section symbols and all other
2187 symbols. On most ELF targets the split is between static symbols
2188 and externally visible symbols. */
2189
2190 static bfd_boolean
mips_elf_sym_is_global(bfd * abfd ATTRIBUTE_UNUSED,asymbol * sym)2191 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
2192 {
2193 if (SGI_COMPAT (abfd))
2194 return (sym->flags & BSF_SECTION_SYM) == 0;
2195 else
2196 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2197 || bfd_is_und_section (bfd_get_section (sym))
2198 || bfd_is_com_section (bfd_get_section (sym)));
2199 }
2200
2201 /* Set the right machine number for a MIPS ELF file. */
2202
2203 static bfd_boolean
mips_elf_n32_object_p(bfd * abfd)2204 mips_elf_n32_object_p (bfd *abfd)
2205 {
2206 unsigned long mach;
2207
2208 /* Irix 5 and 6 are broken. Object file symbol tables are not always
2209 sorted correctly such that local symbols precede global symbols,
2210 and the sh_info field in the symbol table is not always right. */
2211 if (SGI_COMPAT (abfd))
2212 elf_bad_symtab (abfd) = TRUE;
2213
2214 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
2215 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
2216
2217 if (! ABI_N32_P(abfd))
2218 return FALSE;
2219
2220 return TRUE;
2221 }
2222
2223 /* Support for core dump NOTE sections. */
2224 static bfd_boolean
elf32_mips_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)2225 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2226 {
2227 int offset;
2228 unsigned int size;
2229
2230 switch (note->descsz)
2231 {
2232 default:
2233 return FALSE;
2234
2235 case 440: /* Linux/MIPS N32 */
2236 /* pr_cursig */
2237 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2238
2239 /* pr_pid */
2240 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
2241
2242 /* pr_reg */
2243 offset = 72;
2244 size = 360;
2245
2246 break;
2247 }
2248
2249 /* Make a ".reg/999" section. */
2250 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
2251 note->descpos + offset);
2252 }
2253
2254 static bfd_boolean
elf32_mips_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)2255 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2256 {
2257 switch (note->descsz)
2258 {
2259 default:
2260 return FALSE;
2261
2262 case 128: /* Linux/MIPS elf_prpsinfo */
2263 elf_tdata (abfd)->core_program
2264 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2265 elf_tdata (abfd)->core_command
2266 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2267 }
2268
2269 /* Note that for some reason, a spurious space is tacked
2270 onto the end of the args in some (at least one anyway)
2271 implementations, so strip it off if it exists. */
2272
2273 {
2274 char *command = elf_tdata (abfd)->core_command;
2275 int n = strlen (command);
2276
2277 if (0 < n && command[n - 1] == ' ')
2278 command[n - 1] = '\0';
2279 }
2280
2281 return TRUE;
2282 }
2283
2284 /* Depending on the target vector we generate some version of Irix
2285 executables or "normal" MIPS ELF ABI executables. */
2286 static irix_compat_t
elf_n32_mips_irix_compat(bfd * abfd)2287 elf_n32_mips_irix_compat (bfd *abfd)
2288 {
2289 if ((abfd->xvec == &bfd_elf32_nbigmips_vec)
2290 || (abfd->xvec == &bfd_elf32_nlittlemips_vec))
2291 return ict_irix6;
2292 else
2293 return ict_none;
2294 }
2295
2296 /* ECOFF swapping routines. These are used when dealing with the
2297 .mdebug section, which is in the ECOFF debugging format. */
2298 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
2299 /* Symbol table magic number. */
2300 magicSym,
2301 /* Alignment of debugging information. E.g., 4. */
2302 4,
2303 /* Sizes of external symbolic information. */
2304 sizeof (struct hdr_ext),
2305 sizeof (struct dnr_ext),
2306 sizeof (struct pdr_ext),
2307 sizeof (struct sym_ext),
2308 sizeof (struct opt_ext),
2309 sizeof (struct fdr_ext),
2310 sizeof (struct rfd_ext),
2311 sizeof (struct ext_ext),
2312 /* Functions to swap in external symbolic data. */
2313 ecoff_swap_hdr_in,
2314 ecoff_swap_dnr_in,
2315 ecoff_swap_pdr_in,
2316 ecoff_swap_sym_in,
2317 ecoff_swap_opt_in,
2318 ecoff_swap_fdr_in,
2319 ecoff_swap_rfd_in,
2320 ecoff_swap_ext_in,
2321 _bfd_ecoff_swap_tir_in,
2322 _bfd_ecoff_swap_rndx_in,
2323 /* Functions to swap out external symbolic data. */
2324 ecoff_swap_hdr_out,
2325 ecoff_swap_dnr_out,
2326 ecoff_swap_pdr_out,
2327 ecoff_swap_sym_out,
2328 ecoff_swap_opt_out,
2329 ecoff_swap_fdr_out,
2330 ecoff_swap_rfd_out,
2331 ecoff_swap_ext_out,
2332 _bfd_ecoff_swap_tir_out,
2333 _bfd_ecoff_swap_rndx_out,
2334 /* Function to read in symbolic data. */
2335 _bfd_mips_elf_read_ecoff_info
2336 };
2337
2338 #define ELF_ARCH bfd_arch_mips
2339 #define ELF_MACHINE_CODE EM_MIPS
2340
2341 #define elf_backend_collect TRUE
2342 #define elf_backend_type_change_ok TRUE
2343 #define elf_backend_can_gc_sections TRUE
2344 #define elf_info_to_howto mips_info_to_howto_rela
2345 #define elf_info_to_howto_rel mips_info_to_howto_rel
2346 #define elf_backend_sym_is_global mips_elf_sym_is_global
2347 #define elf_backend_object_p mips_elf_n32_object_p
2348 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
2349 #define elf_backend_section_processing _bfd_mips_elf_section_processing
2350 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
2351 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
2352 #define elf_backend_section_from_bfd_section \
2353 _bfd_mips_elf_section_from_bfd_section
2354 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
2355 #define elf_backend_link_output_symbol_hook \
2356 _bfd_mips_elf_link_output_symbol_hook
2357 #define elf_backend_create_dynamic_sections \
2358 _bfd_mips_elf_create_dynamic_sections
2359 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
2360 #define elf_backend_merge_symbol_attribute \
2361 _bfd_mips_elf_merge_symbol_attribute
2362 #define elf_backend_adjust_dynamic_symbol \
2363 _bfd_mips_elf_adjust_dynamic_symbol
2364 #define elf_backend_always_size_sections \
2365 _bfd_mips_elf_always_size_sections
2366 #define elf_backend_size_dynamic_sections \
2367 _bfd_mips_elf_size_dynamic_sections
2368 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
2369 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
2370 #define elf_backend_finish_dynamic_symbol \
2371 _bfd_mips_elf_finish_dynamic_symbol
2372 #define elf_backend_finish_dynamic_sections \
2373 _bfd_mips_elf_finish_dynamic_sections
2374 #define elf_backend_final_write_processing \
2375 _bfd_mips_elf_final_write_processing
2376 #define elf_backend_additional_program_headers \
2377 _bfd_mips_elf_additional_program_headers
2378 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
2379 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
2380 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
2381 #define elf_backend_copy_indirect_symbol \
2382 _bfd_mips_elf_copy_indirect_symbol
2383 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
2384 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
2385 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
2386 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
2387
2388 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
2389
2390 /* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations
2391 work better/work only in RELA, so we default to this. */
2392 #define elf_backend_may_use_rel_p 1
2393 #define elf_backend_may_use_rela_p 1
2394 #define elf_backend_default_use_rela_p 1
2395 #define elf_backend_sign_extend_vma TRUE
2396
2397 #define elf_backend_discard_info _bfd_mips_elf_discard_info
2398 #define elf_backend_ignore_discarded_relocs \
2399 _bfd_mips_elf_ignore_discarded_relocs
2400 #define elf_backend_write_section _bfd_mips_elf_write_section
2401 #define elf_backend_mips_irix_compat elf_n32_mips_irix_compat
2402 #define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto
2403 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
2404 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
2405 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
2406 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
2407 #define bfd_elf32_bfd_get_relocated_section_contents \
2408 _bfd_elf_mips_get_relocated_section_contents
2409 #define bfd_elf32_bfd_link_hash_table_create \
2410 _bfd_mips_elf_link_hash_table_create
2411 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
2412 #define bfd_elf32_bfd_merge_private_bfd_data \
2413 _bfd_mips_elf_merge_private_bfd_data
2414 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
2415 #define bfd_elf32_bfd_print_private_bfd_data \
2416 _bfd_mips_elf_print_private_bfd_data
2417 #define bfd_elf32_bfd_relax_section _bfd_mips_relax_section
2418
2419 /* Support for SGI-ish mips targets using n32 ABI. */
2420
2421 #define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec
2422 #define TARGET_LITTLE_NAME "elf32-nlittlemips"
2423 #define TARGET_BIG_SYM bfd_elf32_nbigmips_vec
2424 #define TARGET_BIG_NAME "elf32-nbigmips"
2425
2426 #define ELF_MAXPAGESIZE 0x10000
2427 #define ELF_COMMONPAGESIZE 0x1000
2428
2429 #include "elf32-target.h"
2430
2431 /* Support for traditional mips targets using n32 ABI. */
2432 #undef TARGET_LITTLE_SYM
2433 #undef TARGET_LITTLE_NAME
2434 #undef TARGET_BIG_SYM
2435 #undef TARGET_BIG_NAME
2436
2437 #undef ELF_MAXPAGESIZE
2438 #undef ELF_COMMONPAGESIZE
2439
2440 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec
2441 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips"
2442 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec
2443 #define TARGET_BIG_NAME "elf32-ntradbigmips"
2444
2445 #define ELF_MAXPAGESIZE 0x10000
2446 #define ELF_COMMONPAGESIZE 0x1000
2447 #define elf32_bed elf32_tradbed
2448
2449 /* Include the target file again for this target. */
2450 #include "elf32-target.h"
2451