1 /* MIPS-specific support for 32-bit ELF
2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
3 2003, 2004, 2005 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 "bfd.h"
33 #include "sysdep.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_jump_reloc
65 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
66 static bfd_reloc_status_type mips16_gprel_reloc
67 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
68 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
69 (bfd *, bfd_reloc_code_real_type);
70 static reloc_howto_type *mips_elf_n32_rtype_to_howto
71 (unsigned int, bfd_boolean);
72 static void mips_info_to_howto_rel
73 (bfd *, arelent *, Elf_Internal_Rela *);
74 static void mips_info_to_howto_rela
75 (bfd *, arelent *, Elf_Internal_Rela *);
76 static bfd_boolean mips_elf_sym_is_global
77 (bfd *, asymbol *);
78 static bfd_boolean mips_elf_n32_object_p
79 (bfd *);
80 static bfd_boolean elf32_mips_grok_prstatus
81 (bfd *, Elf_Internal_Note *);
82 static bfd_boolean elf32_mips_grok_psinfo
83 (bfd *, Elf_Internal_Note *);
84 static irix_compat_t elf_n32_mips_irix_compat
85 (bfd *);
86
87 extern const bfd_target bfd_elf32_nbigmips_vec;
88 extern const bfd_target bfd_elf32_nlittlemips_vec;
89
90 /* Nonzero if ABFD is using the N32 ABI. */
91 #define ABI_N32_P(abfd) \
92 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
93
94 /* Whether we are trying to be compatible with IRIX at all. */
95 #define SGI_COMPAT(abfd) \
96 (elf_n32_mips_irix_compat (abfd) != ict_none)
97
98 /* The number of local .got entries we reserve. */
99 #define MIPS_RESERVED_GOTNO (2)
100
101 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
102 from smaller values. Start with zero, widen, *then* decrement. */
103 #define MINUS_ONE (((bfd_vma)0) - 1)
104
105 /* The relocation table used for SHT_REL sections. */
106
107 static reloc_howto_type elf_mips_howto_table_rel[] =
108 {
109 /* No relocation. */
110 HOWTO (R_MIPS_NONE, /* type */
111 0, /* rightshift */
112 0, /* size (0 = byte, 1 = short, 2 = long) */
113 0, /* bitsize */
114 FALSE, /* pc_relative */
115 0, /* bitpos */
116 complain_overflow_dont, /* complain_on_overflow */
117 _bfd_mips_elf_generic_reloc, /* special_function */
118 "R_MIPS_NONE", /* name */
119 FALSE, /* partial_inplace */
120 0, /* src_mask */
121 0, /* dst_mask */
122 FALSE), /* pcrel_offset */
123
124 /* 16 bit relocation. */
125 HOWTO (R_MIPS_16, /* type */
126 0, /* rightshift */
127 2, /* size (0 = byte, 1 = short, 2 = long) */
128 16, /* bitsize */
129 FALSE, /* pc_relative */
130 0, /* bitpos */
131 complain_overflow_signed, /* complain_on_overflow */
132 _bfd_mips_elf_generic_reloc, /* special_function */
133 "R_MIPS_16", /* name */
134 TRUE, /* partial_inplace */
135 0x0000ffff, /* src_mask */
136 0x0000ffff, /* dst_mask */
137 FALSE), /* pcrel_offset */
138
139 /* 32 bit relocation. */
140 HOWTO (R_MIPS_32, /* type */
141 0, /* rightshift */
142 2, /* size (0 = byte, 1 = short, 2 = long) */
143 32, /* bitsize */
144 FALSE, /* pc_relative */
145 0, /* bitpos */
146 complain_overflow_dont, /* complain_on_overflow */
147 _bfd_mips_elf_generic_reloc, /* special_function */
148 "R_MIPS_32", /* name */
149 TRUE, /* partial_inplace */
150 0xffffffff, /* src_mask */
151 0xffffffff, /* dst_mask */
152 FALSE), /* pcrel_offset */
153
154 /* 32 bit symbol relative relocation. */
155 HOWTO (R_MIPS_REL32, /* type */
156 0, /* rightshift */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
158 32, /* bitsize */
159 FALSE, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 _bfd_mips_elf_generic_reloc, /* special_function */
163 "R_MIPS_REL32", /* name */
164 TRUE, /* partial_inplace */
165 0xffffffff, /* src_mask */
166 0xffffffff, /* dst_mask */
167 FALSE), /* pcrel_offset */
168
169 /* 26 bit jump address. */
170 HOWTO (R_MIPS_26, /* type */
171 2, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 26, /* bitsize */
174 FALSE, /* pc_relative */
175 0, /* bitpos */
176 complain_overflow_dont, /* complain_on_overflow */
177 /* This needs complex overflow
178 detection, because the upper four
179 bits must match the PC + 4. */
180 _bfd_mips_elf_generic_reloc, /* special_function */
181 "R_MIPS_26", /* name */
182 TRUE, /* partial_inplace */
183 0x03ffffff, /* src_mask */
184 0x03ffffff, /* dst_mask */
185 FALSE), /* pcrel_offset */
186
187 /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
188 However, the native IRIX6 tools use them, so we try our best. */
189
190 /* High 16 bits of symbol value. */
191 HOWTO (R_MIPS_HI16, /* type */
192 16, /* rightshift */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 16, /* bitsize */
195 FALSE, /* pc_relative */
196 0, /* bitpos */
197 complain_overflow_dont, /* complain_on_overflow */
198 _bfd_mips_elf_hi16_reloc, /* special_function */
199 "R_MIPS_HI16", /* name */
200 TRUE, /* partial_inplace */
201 0x0000ffff, /* src_mask */
202 0x0000ffff, /* dst_mask */
203 FALSE), /* pcrel_offset */
204
205 /* Low 16 bits of symbol value. */
206 HOWTO (R_MIPS_LO16, /* type */
207 0, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 16, /* bitsize */
210 FALSE, /* pc_relative */
211 0, /* bitpos */
212 complain_overflow_dont, /* complain_on_overflow */
213 _bfd_mips_elf_lo16_reloc, /* special_function */
214 "R_MIPS_LO16", /* name */
215 TRUE, /* partial_inplace */
216 0x0000ffff, /* src_mask */
217 0x0000ffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
219
220 /* GP relative reference. */
221 HOWTO (R_MIPS_GPREL16, /* type */
222 0, /* rightshift */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
224 16, /* bitsize */
225 FALSE, /* pc_relative */
226 0, /* bitpos */
227 complain_overflow_signed, /* complain_on_overflow */
228 mips_elf_gprel16_reloc, /* special_function */
229 "R_MIPS_GPREL16", /* name */
230 TRUE, /* partial_inplace */
231 0x0000ffff, /* src_mask */
232 0x0000ffff, /* dst_mask */
233 FALSE), /* pcrel_offset */
234
235 /* Reference to literal section. */
236 HOWTO (R_MIPS_LITERAL, /* type */
237 0, /* rightshift */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
239 16, /* bitsize */
240 FALSE, /* pc_relative */
241 0, /* bitpos */
242 complain_overflow_signed, /* complain_on_overflow */
243 mips_elf_literal_reloc, /* special_function */
244 "R_MIPS_LITERAL", /* name */
245 TRUE, /* partial_inplace */
246 0x0000ffff, /* src_mask */
247 0x0000ffff, /* dst_mask */
248 FALSE), /* pcrel_offset */
249
250 /* Reference to global offset table. */
251 HOWTO (R_MIPS_GOT16, /* type */
252 0, /* rightshift */
253 2, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
255 FALSE, /* pc_relative */
256 0, /* bitpos */
257 complain_overflow_signed, /* complain_on_overflow */
258 _bfd_mips_elf_got16_reloc, /* special_function */
259 "R_MIPS_GOT16", /* name */
260 TRUE, /* partial_inplace */
261 0x0000ffff, /* src_mask */
262 0x0000ffff, /* dst_mask */
263 FALSE), /* pcrel_offset */
264
265 /* 16 bit PC relative reference. */
266 HOWTO (R_MIPS_PC16, /* type */
267 0, /* 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
759 /* The relocation table used for SHT_RELA sections. */
760
761 static reloc_howto_type elf_mips_howto_table_rela[] =
762 {
763 /* No relocation. */
764 HOWTO (R_MIPS_NONE, /* type */
765 0, /* rightshift */
766 0, /* size (0 = byte, 1 = short, 2 = long) */
767 0, /* bitsize */
768 FALSE, /* pc_relative */
769 0, /* bitpos */
770 complain_overflow_dont, /* complain_on_overflow */
771 _bfd_mips_elf_generic_reloc, /* special_function */
772 "R_MIPS_NONE", /* name */
773 FALSE, /* partial_inplace */
774 0, /* src_mask */
775 0, /* dst_mask */
776 FALSE), /* pcrel_offset */
777
778 /* 16 bit relocation. */
779 HOWTO (R_MIPS_16, /* 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_16", /* name */
788 FALSE, /* partial_inplace */
789 0, /* src_mask */
790 0x0000, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
793 /* 32 bit relocation. */
794 HOWTO (R_MIPS_32, /* 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_32", /* name */
803 FALSE, /* partial_inplace */
804 0, /* src_mask */
805 0xffffffff, /* dst_mask */
806 FALSE), /* pcrel_offset */
807
808 /* 32 bit symbol relative relocation. */
809 HOWTO (R_MIPS_REL32, /* 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_REL32", /* name */
818 FALSE, /* partial_inplace */
819 0, /* src_mask */
820 0xffffffff, /* dst_mask */
821 FALSE), /* pcrel_offset */
822
823 /* 26 bit jump address. */
824 HOWTO (R_MIPS_26, /* type */
825 2, /* rightshift */
826 2, /* size (0 = byte, 1 = short, 2 = long) */
827 26, /* bitsize */
828 FALSE, /* pc_relative */
829 0, /* bitpos */
830 complain_overflow_dont, /* complain_on_overflow */
831 /* This needs complex overflow
832 detection, because the upper 36
833 bits must match the PC + 4. */
834 _bfd_mips_elf_generic_reloc, /* special_function */
835 "R_MIPS_26", /* name */
836 FALSE, /* partial_inplace */
837 0, /* src_mask */
838 0x03ffffff, /* dst_mask */
839 FALSE), /* pcrel_offset */
840
841 /* High 16 bits of symbol value. */
842 HOWTO (R_MIPS_HI16, /* type */
843 0, /* rightshift */
844 2, /* size (0 = byte, 1 = short, 2 = long) */
845 16, /* bitsize */
846 FALSE, /* pc_relative */
847 0, /* bitpos */
848 complain_overflow_dont, /* complain_on_overflow */
849 _bfd_mips_elf_generic_reloc, /* special_function */
850 "R_MIPS_HI16", /* name */
851 FALSE, /* partial_inplace */
852 0, /* src_mask */
853 0x0000ffff, /* dst_mask */
854 FALSE), /* pcrel_offset */
855
856 /* Low 16 bits of symbol value. */
857 HOWTO (R_MIPS_LO16, /* 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_LO16", /* name */
866 FALSE, /* partial_inplace */
867 0, /* src_mask */
868 0x0000ffff, /* dst_mask */
869 FALSE), /* pcrel_offset */
870
871 /* GP relative reference. */
872 HOWTO (R_MIPS_GPREL16, /* 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_signed, /* complain_on_overflow */
879 mips_elf_gprel16_reloc, /* special_function */
880 "R_MIPS_GPREL16", /* name */
881 FALSE, /* partial_inplace */
882 0, /* src_mask */
883 0x0000ffff, /* dst_mask */
884 FALSE), /* pcrel_offset */
885
886 /* Reference to literal section. */
887 HOWTO (R_MIPS_LITERAL, /* 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_literal_reloc, /* special_function */
895 "R_MIPS_LITERAL", /* name */
896 FALSE, /* partial_inplace */
897 0, /* src_mask */
898 0x0000ffff, /* dst_mask */
899 FALSE), /* pcrel_offset */
900
901 /* Reference to global offset table. */
902 HOWTO (R_MIPS_GOT16, /* 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 _bfd_mips_elf_generic_reloc, /* special_function */
910 "R_MIPS_GOT16", /* name */
911 FALSE, /* partial_inplace */
912 0, /* src_mask */
913 0x0000ffff, /* dst_mask */
914 FALSE), /* pcrel_offset */
915
916 /* 16 bit PC relative reference. */
917 HOWTO (R_MIPS_PC16, /* type */
918 0, /* rightshift */
919 2, /* size (0 = byte, 1 = short, 2 = long) */
920 16, /* bitsize */
921 TRUE, /* pc_relative */
922 0, /* bitpos */
923 complain_overflow_signed, /* complain_on_overflow */
924 _bfd_mips_elf_generic_reloc, /* special_function */
925 "R_MIPS_PC16", /* name */
926 FALSE, /* partial_inplace */
927 0, /* src_mask */
928 0x0000ffff, /* dst_mask */
929 TRUE), /* pcrel_offset */
930
931 /* 16 bit call through global offset table. */
932 HOWTO (R_MIPS_CALL16, /* type */
933 0, /* rightshift */
934 2, /* size (0 = byte, 1 = short, 2 = long) */
935 16, /* bitsize */
936 FALSE, /* pc_relative */
937 0, /* bitpos */
938 complain_overflow_signed, /* complain_on_overflow */
939 _bfd_mips_elf_generic_reloc, /* special_function */
940 "R_MIPS_CALL16", /* name */
941 FALSE, /* partial_inplace */
942 0, /* src_mask */
943 0x0000ffff, /* dst_mask */
944 FALSE), /* pcrel_offset */
945
946 /* 32 bit GP relative reference. */
947 HOWTO (R_MIPS_GPREL32, /* type */
948 0, /* rightshift */
949 2, /* size (0 = byte, 1 = short, 2 = long) */
950 32, /* bitsize */
951 FALSE, /* pc_relative */
952 0, /* bitpos */
953 complain_overflow_dont, /* complain_on_overflow */
954 mips_elf_gprel32_reloc, /* special_function */
955 "R_MIPS_GPREL32", /* name */
956 FALSE, /* partial_inplace */
957 0, /* src_mask */
958 0xffffffff, /* dst_mask */
959 FALSE), /* pcrel_offset */
960
961 EMPTY_HOWTO (13),
962 EMPTY_HOWTO (14),
963 EMPTY_HOWTO (15),
964
965 /* A 5 bit shift field. */
966 HOWTO (R_MIPS_SHIFT5, /* type */
967 0, /* rightshift */
968 2, /* size (0 = byte, 1 = short, 2 = long) */
969 5, /* bitsize */
970 FALSE, /* pc_relative */
971 6, /* bitpos */
972 complain_overflow_bitfield, /* complain_on_overflow */
973 _bfd_mips_elf_generic_reloc, /* special_function */
974 "R_MIPS_SHIFT5", /* name */
975 FALSE, /* partial_inplace */
976 0, /* src_mask */
977 0x000007c0, /* dst_mask */
978 FALSE), /* pcrel_offset */
979
980 /* A 6 bit shift field. */
981 HOWTO (R_MIPS_SHIFT6, /* type */
982 0, /* rightshift */
983 2, /* size (0 = byte, 1 = short, 2 = long) */
984 6, /* bitsize */
985 FALSE, /* pc_relative */
986 6, /* bitpos */
987 complain_overflow_bitfield, /* complain_on_overflow */
988 mips_elf_shift6_reloc, /* special_function */
989 "R_MIPS_SHIFT6", /* name */
990 FALSE, /* partial_inplace */
991 0, /* src_mask */
992 0x000007c4, /* dst_mask */
993 FALSE), /* pcrel_offset */
994
995 /* 64 bit relocation. */
996 HOWTO (R_MIPS_64, /* type */
997 0, /* rightshift */
998 4, /* size (0 = byte, 1 = short, 2 = long) */
999 64, /* bitsize */
1000 FALSE, /* pc_relative */
1001 0, /* bitpos */
1002 complain_overflow_dont, /* complain_on_overflow */
1003 _bfd_mips_elf_generic_reloc, /* special_function */
1004 "R_MIPS_64", /* name */
1005 FALSE, /* partial_inplace */
1006 0, /* src_mask */
1007 MINUS_ONE, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1009
1010 /* Displacement in the global offset table. */
1011 HOWTO (R_MIPS_GOT_DISP, /* type */
1012 0, /* rightshift */
1013 2, /* size (0 = byte, 1 = short, 2 = long) */
1014 16, /* bitsize */
1015 FALSE, /* pc_relative */
1016 0, /* bitpos */
1017 complain_overflow_signed, /* complain_on_overflow */
1018 _bfd_mips_elf_generic_reloc, /* special_function */
1019 "R_MIPS_GOT_DISP", /* name */
1020 FALSE, /* partial_inplace */
1021 0, /* src_mask */
1022 0x0000ffff, /* dst_mask */
1023 FALSE), /* pcrel_offset */
1024
1025 /* Displacement to page pointer in the global offset table. */
1026 HOWTO (R_MIPS_GOT_PAGE, /* type */
1027 0, /* rightshift */
1028 2, /* size (0 = byte, 1 = short, 2 = long) */
1029 16, /* bitsize */
1030 FALSE, /* pc_relative */
1031 0, /* bitpos */
1032 complain_overflow_signed, /* complain_on_overflow */
1033 _bfd_mips_elf_generic_reloc, /* special_function */
1034 "R_MIPS_GOT_PAGE", /* name */
1035 FALSE, /* partial_inplace */
1036 0, /* src_mask */
1037 0x0000ffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1039
1040 /* Offset from page pointer in the global offset table. */
1041 HOWTO (R_MIPS_GOT_OFST, /* type */
1042 0, /* rightshift */
1043 2, /* size (0 = byte, 1 = short, 2 = long) */
1044 16, /* bitsize */
1045 FALSE, /* pc_relative */
1046 0, /* bitpos */
1047 complain_overflow_signed, /* complain_on_overflow */
1048 _bfd_mips_elf_generic_reloc, /* special_function */
1049 "R_MIPS_GOT_OFST", /* name */
1050 FALSE, /* partial_inplace */
1051 0, /* src_mask */
1052 0x0000ffff, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1054
1055 /* High 16 bits of displacement in global offset table. */
1056 HOWTO (R_MIPS_GOT_HI16, /* type */
1057 0, /* rightshift */
1058 2, /* size (0 = byte, 1 = short, 2 = long) */
1059 16, /* bitsize */
1060 FALSE, /* pc_relative */
1061 0, /* bitpos */
1062 complain_overflow_dont, /* complain_on_overflow */
1063 _bfd_mips_elf_generic_reloc, /* special_function */
1064 "R_MIPS_GOT_HI16", /* name */
1065 FALSE, /* partial_inplace */
1066 0, /* src_mask */
1067 0x0000ffff, /* dst_mask */
1068 FALSE), /* pcrel_offset */
1069
1070 /* Low 16 bits of displacement in global offset table. */
1071 HOWTO (R_MIPS_GOT_LO16, /* type */
1072 0, /* rightshift */
1073 2, /* size (0 = byte, 1 = short, 2 = long) */
1074 16, /* bitsize */
1075 FALSE, /* pc_relative */
1076 0, /* bitpos */
1077 complain_overflow_dont, /* complain_on_overflow */
1078 _bfd_mips_elf_generic_reloc, /* special_function */
1079 "R_MIPS_GOT_LO16", /* name */
1080 FALSE, /* partial_inplace */
1081 0, /* src_mask */
1082 0x0000ffff, /* dst_mask */
1083 FALSE), /* pcrel_offset */
1084
1085 /* 64 bit subtraction. */
1086 HOWTO (R_MIPS_SUB, /* type */
1087 0, /* rightshift */
1088 4, /* size (0 = byte, 1 = short, 2 = long) */
1089 64, /* bitsize */
1090 FALSE, /* pc_relative */
1091 0, /* bitpos */
1092 complain_overflow_dont, /* complain_on_overflow */
1093 _bfd_mips_elf_generic_reloc, /* special_function */
1094 "R_MIPS_SUB", /* name */
1095 FALSE, /* partial_inplace */
1096 0, /* src_mask */
1097 MINUS_ONE, /* dst_mask */
1098 FALSE), /* pcrel_offset */
1099
1100 /* Insert the addend as an instruction. */
1101 /* FIXME: Not handled correctly. */
1102 HOWTO (R_MIPS_INSERT_A, /* type */
1103 0, /* rightshift */
1104 2, /* size (0 = byte, 1 = short, 2 = long) */
1105 32, /* bitsize */
1106 FALSE, /* pc_relative */
1107 0, /* bitpos */
1108 complain_overflow_dont, /* complain_on_overflow */
1109 _bfd_mips_elf_generic_reloc, /* special_function */
1110 "R_MIPS_INSERT_A", /* name */
1111 FALSE, /* partial_inplace */
1112 0, /* src_mask */
1113 0xffffffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1115
1116 /* Insert the addend as an instruction, and change all relocations
1117 to refer to the old instruction at the address. */
1118 /* FIXME: Not handled correctly. */
1119 HOWTO (R_MIPS_INSERT_B, /* 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_B", /* name */
1128 FALSE, /* partial_inplace */
1129 0, /* src_mask */
1130 0xffffffff, /* dst_mask */
1131 FALSE), /* pcrel_offset */
1132
1133 /* Delete a 32 bit instruction. */
1134 /* FIXME: Not handled correctly. */
1135 HOWTO (R_MIPS_DELETE, /* type */
1136 0, /* rightshift */
1137 2, /* size (0 = byte, 1 = short, 2 = long) */
1138 32, /* bitsize */
1139 FALSE, /* pc_relative */
1140 0, /* bitpos */
1141 complain_overflow_dont, /* complain_on_overflow */
1142 _bfd_mips_elf_generic_reloc, /* special_function */
1143 "R_MIPS_DELETE", /* name */
1144 FALSE, /* partial_inplace */
1145 0, /* src_mask */
1146 0xffffffff, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1148
1149 /* Get the higher value of a 64 bit addend. */
1150 HOWTO (R_MIPS_HIGHER, /* type */
1151 0, /* rightshift */
1152 2, /* size (0 = byte, 1 = short, 2 = long) */
1153 16, /* bitsize */
1154 FALSE, /* pc_relative */
1155 0, /* bitpos */
1156 complain_overflow_dont, /* complain_on_overflow */
1157 _bfd_mips_elf_generic_reloc, /* special_function */
1158 "R_MIPS_HIGHER", /* name */
1159 FALSE, /* partial_inplace */
1160 0, /* src_mask */
1161 0x0000ffff, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1163
1164 /* Get the highest value of a 64 bit addend. */
1165 HOWTO (R_MIPS_HIGHEST, /* type */
1166 0, /* rightshift */
1167 2, /* size (0 = byte, 1 = short, 2 = long) */
1168 16, /* bitsize */
1169 FALSE, /* pc_relative */
1170 0, /* bitpos */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 _bfd_mips_elf_generic_reloc, /* special_function */
1173 "R_MIPS_HIGHEST", /* name */
1174 FALSE, /* partial_inplace */
1175 0, /* src_mask */
1176 0x0000ffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1178
1179 /* High 16 bits of displacement in global offset table. */
1180 HOWTO (R_MIPS_CALL_HI16, /* type */
1181 0, /* rightshift */
1182 2, /* size (0 = byte, 1 = short, 2 = long) */
1183 16, /* bitsize */
1184 FALSE, /* pc_relative */
1185 0, /* bitpos */
1186 complain_overflow_dont, /* complain_on_overflow */
1187 _bfd_mips_elf_generic_reloc, /* special_function */
1188 "R_MIPS_CALL_HI16", /* name */
1189 FALSE, /* partial_inplace */
1190 0, /* src_mask */
1191 0x0000ffff, /* dst_mask */
1192 FALSE), /* pcrel_offset */
1193
1194 /* Low 16 bits of displacement in global offset table. */
1195 HOWTO (R_MIPS_CALL_LO16, /* type */
1196 0, /* rightshift */
1197 2, /* size (0 = byte, 1 = short, 2 = long) */
1198 16, /* bitsize */
1199 FALSE, /* pc_relative */
1200 0, /* bitpos */
1201 complain_overflow_dont, /* complain_on_overflow */
1202 _bfd_mips_elf_generic_reloc, /* special_function */
1203 "R_MIPS_CALL_LO16", /* name */
1204 FALSE, /* partial_inplace */
1205 0, /* src_mask */
1206 0x0000ffff, /* dst_mask */
1207 FALSE), /* pcrel_offset */
1208
1209 /* Section displacement, used by an associated event location section. */
1210 HOWTO (R_MIPS_SCN_DISP, /* type */
1211 0, /* rightshift */
1212 2, /* size (0 = byte, 1 = short, 2 = long) */
1213 32, /* bitsize */
1214 FALSE, /* pc_relative */
1215 0, /* bitpos */
1216 complain_overflow_dont, /* complain_on_overflow */
1217 _bfd_mips_elf_generic_reloc, /* special_function */
1218 "R_MIPS_SCN_DISP", /* name */
1219 FALSE, /* partial_inplace */
1220 0, /* src_mask */
1221 0xffffffff, /* dst_mask */
1222 FALSE), /* pcrel_offset */
1223
1224 /* 16 bit relocation. */
1225 HOWTO (R_MIPS_REL16, /* type */
1226 0, /* rightshift */
1227 1, /* size (0 = byte, 1 = short, 2 = long) */
1228 16, /* bitsize */
1229 FALSE, /* pc_relative */
1230 0, /* bitpos */
1231 complain_overflow_signed, /* complain_on_overflow */
1232 _bfd_mips_elf_generic_reloc, /* special_function */
1233 "R_MIPS_REL16", /* name */
1234 FALSE, /* partial_inplace */
1235 0, /* src_mask */
1236 0xffff, /* dst_mask */
1237 FALSE), /* pcrel_offset */
1238
1239 /* These two are obsolete. */
1240 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
1241 EMPTY_HOWTO (R_MIPS_PJUMP),
1242
1243 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
1244 It must be used for multigot GOT's (and only there). */
1245 HOWTO (R_MIPS_RELGOT, /* type */
1246 0, /* rightshift */
1247 2, /* size (0 = byte, 1 = short, 2 = long) */
1248 32, /* bitsize */
1249 FALSE, /* pc_relative */
1250 0, /* bitpos */
1251 complain_overflow_dont, /* complain_on_overflow */
1252 _bfd_mips_elf_generic_reloc, /* special_function */
1253 "R_MIPS_RELGOT", /* name */
1254 FALSE, /* partial_inplace */
1255 0, /* src_mask */
1256 0xffffffff, /* dst_mask */
1257 FALSE), /* pcrel_offset */
1258
1259 /* Protected jump conversion. This is an optimization hint. No
1260 relocation is required for correctness. */
1261 HOWTO (R_MIPS_JALR, /* type */
1262 0, /* rightshift */
1263 2, /* size (0 = byte, 1 = short, 2 = long) */
1264 32, /* bitsize */
1265 FALSE, /* pc_relative */
1266 0, /* bitpos */
1267 complain_overflow_dont, /* complain_on_overflow */
1268 _bfd_mips_elf_generic_reloc, /* special_function */
1269 "R_MIPS_JALR", /* name */
1270 FALSE, /* partial_inplace */
1271 0, /* src_mask */
1272 0, /* dst_mask */
1273 FALSE), /* pcrel_offset */
1274
1275 /* TLS GD/LD dynamic relocations. */
1276 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
1277 0, /* rightshift */
1278 2, /* size (0 = byte, 1 = short, 2 = long) */
1279 32, /* bitsize */
1280 FALSE, /* pc_relative */
1281 0, /* bitpos */
1282 complain_overflow_dont, /* complain_on_overflow */
1283 _bfd_mips_elf_generic_reloc, /* special_function */
1284 "R_MIPS_TLS_DTPMOD32", /* name */
1285 TRUE, /* partial_inplace */
1286 0xffffffff, /* src_mask */
1287 0xffffffff, /* dst_mask */
1288 FALSE), /* pcrel_offset */
1289
1290 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
1291 0, /* rightshift */
1292 2, /* size (0 = byte, 1 = short, 2 = long) */
1293 32, /* bitsize */
1294 FALSE, /* pc_relative */
1295 0, /* bitpos */
1296 complain_overflow_dont, /* complain_on_overflow */
1297 _bfd_mips_elf_generic_reloc, /* special_function */
1298 "R_MIPS_TLS_DTPREL32", /* name */
1299 TRUE, /* partial_inplace */
1300 0xffffffff, /* src_mask */
1301 0xffffffff, /* dst_mask */
1302 FALSE), /* pcrel_offset */
1303
1304 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
1305 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
1306
1307 /* TLS general dynamic variable reference. */
1308 HOWTO (R_MIPS_TLS_GD, /* type */
1309 0, /* rightshift */
1310 2, /* size (0 = byte, 1 = short, 2 = long) */
1311 16, /* bitsize */
1312 FALSE, /* pc_relative */
1313 0, /* bitpos */
1314 complain_overflow_signed, /* complain_on_overflow */
1315 _bfd_mips_elf_generic_reloc, /* special_function */
1316 "R_MIPS_TLS_GD", /* name */
1317 TRUE, /* partial_inplace */
1318 0x0000ffff, /* src_mask */
1319 0x0000ffff, /* dst_mask */
1320 FALSE), /* pcrel_offset */
1321
1322 /* TLS local dynamic variable reference. */
1323 HOWTO (R_MIPS_TLS_LDM, /* type */
1324 0, /* rightshift */
1325 2, /* size (0 = byte, 1 = short, 2 = long) */
1326 16, /* bitsize */
1327 FALSE, /* pc_relative */
1328 0, /* bitpos */
1329 complain_overflow_signed, /* complain_on_overflow */
1330 _bfd_mips_elf_generic_reloc, /* special_function */
1331 "R_MIPS_TLS_LDM", /* name */
1332 TRUE, /* partial_inplace */
1333 0x0000ffff, /* src_mask */
1334 0x0000ffff, /* dst_mask */
1335 FALSE), /* pcrel_offset */
1336
1337 /* TLS local dynamic offset. */
1338 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
1339 0, /* rightshift */
1340 2, /* size (0 = byte, 1 = short, 2 = long) */
1341 16, /* bitsize */
1342 FALSE, /* pc_relative */
1343 0, /* bitpos */
1344 complain_overflow_signed, /* complain_on_overflow */
1345 _bfd_mips_elf_generic_reloc, /* special_function */
1346 "R_MIPS_TLS_DTPREL_HI16", /* name */
1347 TRUE, /* partial_inplace */
1348 0x0000ffff, /* src_mask */
1349 0x0000ffff, /* dst_mask */
1350 FALSE), /* pcrel_offset */
1351
1352 /* TLS local dynamic offset. */
1353 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
1354 0, /* rightshift */
1355 2, /* size (0 = byte, 1 = short, 2 = long) */
1356 16, /* bitsize */
1357 FALSE, /* pc_relative */
1358 0, /* bitpos */
1359 complain_overflow_signed, /* complain_on_overflow */
1360 _bfd_mips_elf_generic_reloc, /* special_function */
1361 "R_MIPS_TLS_DTPREL_LO16", /* name */
1362 TRUE, /* partial_inplace */
1363 0x0000ffff, /* src_mask */
1364 0x0000ffff, /* dst_mask */
1365 FALSE), /* pcrel_offset */
1366
1367 /* TLS thread pointer offset. */
1368 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
1369 0, /* rightshift */
1370 2, /* size (0 = byte, 1 = short, 2 = long) */
1371 16, /* bitsize */
1372 FALSE, /* pc_relative */
1373 0, /* bitpos */
1374 complain_overflow_signed, /* complain_on_overflow */
1375 _bfd_mips_elf_generic_reloc, /* special_function */
1376 "R_MIPS_TLS_GOTTPREL", /* name */
1377 TRUE, /* partial_inplace */
1378 0x0000ffff, /* src_mask */
1379 0x0000ffff, /* dst_mask */
1380 FALSE), /* pcrel_offset */
1381
1382 /* TLS IE dynamic relocations. */
1383 HOWTO (R_MIPS_TLS_TPREL32, /* type */
1384 0, /* rightshift */
1385 2, /* size (0 = byte, 1 = short, 2 = long) */
1386 32, /* bitsize */
1387 FALSE, /* pc_relative */
1388 0, /* bitpos */
1389 complain_overflow_dont, /* complain_on_overflow */
1390 _bfd_mips_elf_generic_reloc, /* special_function */
1391 "R_MIPS_TLS_TPREL32", /* name */
1392 TRUE, /* partial_inplace */
1393 0xffffffff, /* src_mask */
1394 0xffffffff, /* dst_mask */
1395 FALSE), /* pcrel_offset */
1396
1397 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
1398
1399 /* TLS thread pointer offset. */
1400 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
1401 0, /* rightshift */
1402 2, /* size (0 = byte, 1 = short, 2 = long) */
1403 16, /* bitsize */
1404 FALSE, /* pc_relative */
1405 0, /* bitpos */
1406 complain_overflow_signed, /* complain_on_overflow */
1407 _bfd_mips_elf_generic_reloc, /* special_function */
1408 "R_MIPS_TLS_TPREL_HI16", /* name */
1409 TRUE, /* partial_inplace */
1410 0x0000ffff, /* src_mask */
1411 0x0000ffff, /* dst_mask */
1412 FALSE), /* pcrel_offset */
1413
1414 /* TLS thread pointer offset. */
1415 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
1416 0, /* rightshift */
1417 2, /* size (0 = byte, 1 = short, 2 = long) */
1418 16, /* bitsize */
1419 FALSE, /* pc_relative */
1420 0, /* bitpos */
1421 complain_overflow_signed, /* complain_on_overflow */
1422 _bfd_mips_elf_generic_reloc, /* special_function */
1423 "R_MIPS_TLS_TPREL_LO16", /* name */
1424 TRUE, /* partial_inplace */
1425 0x0000ffff, /* src_mask */
1426 0x0000ffff, /* dst_mask */
1427 FALSE), /* pcrel_offset */
1428 };
1429
1430 static reloc_howto_type elf_mips16_howto_table_rel[] =
1431 {
1432 /* The reloc used for the mips16 jump instruction. */
1433 HOWTO (R_MIPS16_26, /* type */
1434 2, /* rightshift */
1435 2, /* size (0 = byte, 1 = short, 2 = long) */
1436 26, /* bitsize */
1437 FALSE, /* pc_relative */
1438 0, /* bitpos */
1439 complain_overflow_dont, /* complain_on_overflow */
1440 /* This needs complex overflow
1441 detection, because the upper four
1442 bits must match the PC. */
1443 mips16_jump_reloc, /* special_function */
1444 "R_MIPS16_26", /* name */
1445 TRUE, /* partial_inplace */
1446 0x3ffffff, /* src_mask */
1447 0x3ffffff, /* dst_mask */
1448 FALSE), /* pcrel_offset */
1449
1450 /* The reloc used for the mips16 gprel instruction. */
1451 HOWTO (R_MIPS16_GPREL, /* type */
1452 0, /* rightshift */
1453 2, /* size (0 = byte, 1 = short, 2 = long) */
1454 16, /* bitsize */
1455 FALSE, /* pc_relative */
1456 0, /* bitpos */
1457 complain_overflow_signed, /* complain_on_overflow */
1458 mips16_gprel_reloc, /* special_function */
1459 "R_MIPS16_GPREL", /* name */
1460 TRUE, /* partial_inplace */
1461 0x0000ffff, /* src_mask */
1462 0x0000ffff, /* dst_mask */
1463 FALSE), /* pcrel_offset */
1464
1465 /* A placeholder for MIPS16 reference to global offset table. */
1466 EMPTY_HOWTO (R_MIPS16_GOT16),
1467
1468 /* A placeholder for MIPS16 16 bit call through global offset table. */
1469 EMPTY_HOWTO (R_MIPS16_CALL16),
1470
1471 /* MIPS16 high 16 bits of symbol value. */
1472 HOWTO (R_MIPS16_HI16, /* type */
1473 16, /* rightshift */
1474 2, /* size (0 = byte, 1 = short, 2 = long) */
1475 16, /* bitsize */
1476 FALSE, /* pc_relative */
1477 0, /* bitpos */
1478 complain_overflow_dont, /* complain_on_overflow */
1479 _bfd_mips_elf_hi16_reloc, /* special_function */
1480 "R_MIPS16_HI16", /* name */
1481 TRUE, /* partial_inplace */
1482 0x0000ffff, /* src_mask */
1483 0x0000ffff, /* dst_mask */
1484 FALSE), /* pcrel_offset */
1485
1486 /* MIPS16 low 16 bits of symbol value. */
1487 HOWTO (R_MIPS16_LO16, /* type */
1488 0, /* rightshift */
1489 2, /* size (0 = byte, 1 = short, 2 = long) */
1490 16, /* bitsize */
1491 FALSE, /* pc_relative */
1492 0, /* bitpos */
1493 complain_overflow_dont, /* complain_on_overflow */
1494 _bfd_mips_elf_lo16_reloc, /* special_function */
1495 "R_MIPS16_LO16", /* name */
1496 TRUE, /* partial_inplace */
1497 0x0000ffff, /* src_mask */
1498 0x0000ffff, /* dst_mask */
1499 FALSE), /* pcrel_offset */
1500 };
1501
1502 static reloc_howto_type elf_mips16_howto_table_rela[] =
1503 {
1504 /* The reloc used for the mips16 jump instruction. */
1505 HOWTO (R_MIPS16_26, /* type */
1506 2, /* rightshift */
1507 2, /* size (0 = byte, 1 = short, 2 = long) */
1508 26, /* bitsize */
1509 FALSE, /* pc_relative */
1510 0, /* bitpos */
1511 complain_overflow_dont, /* complain_on_overflow */
1512 /* This needs complex overflow
1513 detection, because the upper four
1514 bits must match the PC. */
1515 mips16_jump_reloc, /* special_function */
1516 "R_MIPS16_26", /* name */
1517 FALSE, /* partial_inplace */
1518 0x3ffffff, /* src_mask */
1519 0x3ffffff, /* dst_mask */
1520 FALSE), /* pcrel_offset */
1521
1522 /* The reloc used for the mips16 gprel instruction. */
1523 HOWTO (R_MIPS16_GPREL, /* type */
1524 0, /* rightshift */
1525 2, /* size (0 = byte, 1 = short, 2 = long) */
1526 16, /* bitsize */
1527 FALSE, /* pc_relative */
1528 0, /* bitpos */
1529 complain_overflow_signed, /* complain_on_overflow */
1530 mips16_gprel_reloc, /* special_function */
1531 "R_MIPS16_GPREL", /* name */
1532 FALSE, /* partial_inplace */
1533 0x0000ffff, /* src_mask */
1534 0x0000ffff, /* dst_mask */
1535 FALSE), /* pcrel_offset */
1536
1537 /* A placeholder for MIPS16 reference to global offset table. */
1538 EMPTY_HOWTO (R_MIPS16_GOT16),
1539
1540 /* A placeholder for MIPS16 16 bit call through global offset table. */
1541 EMPTY_HOWTO (R_MIPS16_CALL16),
1542
1543 /* MIPS16 high 16 bits of symbol value. */
1544 HOWTO (R_MIPS16_HI16, /* type */
1545 16, /* rightshift */
1546 2, /* size (0 = byte, 1 = short, 2 = long) */
1547 16, /* bitsize */
1548 FALSE, /* pc_relative */
1549 0, /* bitpos */
1550 complain_overflow_dont, /* complain_on_overflow */
1551 _bfd_mips_elf_hi16_reloc, /* special_function */
1552 "R_MIPS16_HI16", /* name */
1553 FALSE, /* partial_inplace */
1554 0x0000ffff, /* src_mask */
1555 0x0000ffff, /* dst_mask */
1556 FALSE), /* pcrel_offset */
1557
1558 /* MIPS16 low 16 bits of symbol value. */
1559 HOWTO (R_MIPS16_LO16, /* type */
1560 0, /* rightshift */
1561 2, /* size (0 = byte, 1 = short, 2 = long) */
1562 16, /* bitsize */
1563 FALSE, /* pc_relative */
1564 0, /* bitpos */
1565 complain_overflow_dont, /* complain_on_overflow */
1566 _bfd_mips_elf_lo16_reloc, /* special_function */
1567 "R_MIPS16_LO16", /* name */
1568 FALSE, /* partial_inplace */
1569 0x0000ffff, /* src_mask */
1570 0x0000ffff, /* dst_mask */
1571 FALSE), /* pcrel_offset */
1572 };
1573
1574 /* GNU extension to record C++ vtable hierarchy */
1575 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1576 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1577 0, /* rightshift */
1578 2, /* size (0 = byte, 1 = short, 2 = long) */
1579 0, /* bitsize */
1580 FALSE, /* pc_relative */
1581 0, /* bitpos */
1582 complain_overflow_dont, /* complain_on_overflow */
1583 NULL, /* special_function */
1584 "R_MIPS_GNU_VTINHERIT", /* name */
1585 FALSE, /* partial_inplace */
1586 0, /* src_mask */
1587 0, /* dst_mask */
1588 FALSE); /* pcrel_offset */
1589
1590 /* GNU extension to record C++ vtable member usage */
1591 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1592 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1593 0, /* rightshift */
1594 2, /* size (0 = byte, 1 = short, 2 = long) */
1595 0, /* bitsize */
1596 FALSE, /* pc_relative */
1597 0, /* bitpos */
1598 complain_overflow_dont, /* complain_on_overflow */
1599 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1600 "R_MIPS_GNU_VTENTRY", /* name */
1601 FALSE, /* partial_inplace */
1602 0, /* src_mask */
1603 0, /* dst_mask */
1604 FALSE); /* pcrel_offset */
1605
1606 /* 16 bit offset for pc-relative branches. */
1607 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1608 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1609 2, /* rightshift */
1610 2, /* size (0 = byte, 1 = short, 2 = long) */
1611 16, /* bitsize */
1612 TRUE, /* pc_relative */
1613 0, /* bitpos */
1614 complain_overflow_signed, /* complain_on_overflow */
1615 _bfd_mips_elf_generic_reloc, /* special_function */
1616 "R_MIPS_GNU_REL16_S2", /* name */
1617 TRUE, /* partial_inplace */
1618 0x0000ffff, /* src_mask */
1619 0x0000ffff, /* dst_mask */
1620 TRUE); /* pcrel_offset */
1621
1622 /* 16 bit offset for pc-relative branches. */
1623 static reloc_howto_type elf_mips_gnu_rela16_s2 =
1624 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1625 2, /* rightshift */
1626 2, /* size (0 = byte, 1 = short, 2 = long) */
1627 16, /* bitsize */
1628 TRUE, /* pc_relative */
1629 0, /* bitpos */
1630 complain_overflow_signed, /* complain_on_overflow */
1631 _bfd_mips_elf_generic_reloc, /* special_function */
1632 "R_MIPS_GNU_REL16_S2", /* name */
1633 FALSE, /* partial_inplace */
1634 0, /* src_mask */
1635 0x0000ffff, /* dst_mask */
1636 TRUE); /* pcrel_offset */
1637
1638 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
1639 dangerous relocation. */
1640
1641 static bfd_boolean
mips_elf_assign_gp(bfd * output_bfd,bfd_vma * pgp)1642 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
1643 {
1644 unsigned int count;
1645 asymbol **sym;
1646 unsigned int i;
1647
1648 /* If we've already figured out what GP will be, just return it. */
1649 *pgp = _bfd_get_gp_value (output_bfd);
1650 if (*pgp)
1651 return TRUE;
1652
1653 count = bfd_get_symcount (output_bfd);
1654 sym = bfd_get_outsymbols (output_bfd);
1655
1656 /* The linker script will have created a symbol named `_gp' with the
1657 appropriate value. */
1658 if (sym == NULL)
1659 i = count;
1660 else
1661 {
1662 for (i = 0; i < count; i++, sym++)
1663 {
1664 register const char *name;
1665
1666 name = bfd_asymbol_name (*sym);
1667 if (*name == '_' && strcmp (name, "_gp") == 0)
1668 {
1669 *pgp = bfd_asymbol_value (*sym);
1670 _bfd_set_gp_value (output_bfd, *pgp);
1671 break;
1672 }
1673 }
1674 }
1675
1676 if (i >= count)
1677 {
1678 /* Only get the error once. */
1679 *pgp = 4;
1680 _bfd_set_gp_value (output_bfd, *pgp);
1681 return FALSE;
1682 }
1683
1684 return TRUE;
1685 }
1686
1687 /* We have to figure out the gp value, so that we can adjust the
1688 symbol value correctly. We look up the symbol _gp in the output
1689 BFD. If we can't find it, we're stuck. We cache it in the ELF
1690 target data. We don't need to adjust the symbol value for an
1691 external symbol if we are producing relocatable output. */
1692
1693 static bfd_reloc_status_type
mips_elf_final_gp(bfd * output_bfd,asymbol * symbol,bfd_boolean relocatable,char ** error_message,bfd_vma * pgp)1694 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
1695 char **error_message, bfd_vma *pgp)
1696 {
1697 if (bfd_is_und_section (symbol->section)
1698 && ! relocatable)
1699 {
1700 *pgp = 0;
1701 return bfd_reloc_undefined;
1702 }
1703
1704 *pgp = _bfd_get_gp_value (output_bfd);
1705 if (*pgp == 0
1706 && (! relocatable
1707 || (symbol->flags & BSF_SECTION_SYM) != 0))
1708 {
1709 if (relocatable)
1710 {
1711 /* Make up a value. */
1712 *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
1713 _bfd_set_gp_value (output_bfd, *pgp);
1714 }
1715 else if (!mips_elf_assign_gp (output_bfd, pgp))
1716 {
1717 *error_message =
1718 (char *) _("GP relative relocation when _gp not defined");
1719 return bfd_reloc_dangerous;
1720 }
1721 }
1722
1723 return bfd_reloc_ok;
1724 }
1725
1726 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1727 become the offset from the gp register. */
1728
1729 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)1730 mips_elf_gprel16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
1731 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
1732 asection *input_section, bfd *output_bfd,
1733 char **error_message ATTRIBUTE_UNUSED)
1734 {
1735 bfd_boolean relocatable;
1736 bfd_reloc_status_type ret;
1737 bfd_vma gp;
1738
1739 if (output_bfd != NULL)
1740 relocatable = TRUE;
1741 else
1742 {
1743 relocatable = FALSE;
1744 output_bfd = symbol->section->output_section->owner;
1745 }
1746
1747 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1748 &gp);
1749 if (ret != bfd_reloc_ok)
1750 return ret;
1751
1752 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1753 input_section, relocatable,
1754 data, gp);
1755 }
1756
1757 /* Do a R_MIPS_LITERAL relocation. */
1758
1759 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)1760 mips_elf_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1761 void *data, asection *input_section, bfd *output_bfd,
1762 char **error_message)
1763 {
1764 bfd_boolean relocatable;
1765 bfd_reloc_status_type ret;
1766 bfd_vma gp;
1767
1768 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1769 if (output_bfd != NULL
1770 && (symbol->flags & BSF_SECTION_SYM) == 0
1771 && (symbol->flags & BSF_LOCAL) != 0)
1772 {
1773 *error_message = (char *)
1774 _("literal relocation occurs for an external symbol");
1775 return bfd_reloc_outofrange;
1776 }
1777
1778 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
1779 if (output_bfd != NULL)
1780 relocatable = TRUE;
1781 else
1782 {
1783 relocatable = FALSE;
1784 output_bfd = symbol->section->output_section->owner;
1785 }
1786
1787 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1788 &gp);
1789 if (ret != bfd_reloc_ok)
1790 return ret;
1791
1792 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1793 input_section, relocatable,
1794 data, gp);
1795 }
1796
1797 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1798 become the offset from the gp register. */
1799
1800 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)1801 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1802 void *data, asection *input_section, bfd *output_bfd,
1803 char **error_message)
1804 {
1805 bfd_boolean relocatable;
1806 bfd_reloc_status_type ret;
1807 bfd_vma gp;
1808
1809 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1810 if (output_bfd != NULL
1811 && (symbol->flags & BSF_SECTION_SYM) == 0
1812 && (symbol->flags & BSF_LOCAL) != 0)
1813 {
1814 *error_message = (char *)
1815 _("32bits gp relative relocation occurs for an external symbol");
1816 return bfd_reloc_outofrange;
1817 }
1818
1819 if (output_bfd != NULL)
1820 {
1821 relocatable = TRUE;
1822 gp = _bfd_get_gp_value (output_bfd);
1823 }
1824 else
1825 {
1826 relocatable = FALSE;
1827 output_bfd = symbol->section->output_section->owner;
1828
1829 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
1830 error_message, &gp);
1831 if (ret != bfd_reloc_ok)
1832 return ret;
1833 }
1834
1835 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1836 relocatable, data, gp);
1837 }
1838
1839 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)1840 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1841 asection *input_section, bfd_boolean relocatable,
1842 void *data, bfd_vma gp)
1843 {
1844 bfd_vma relocation;
1845 unsigned long val;
1846
1847 if (bfd_is_com_section (symbol->section))
1848 relocation = 0;
1849 else
1850 relocation = symbol->value;
1851
1852 relocation += symbol->section->output_section->vma;
1853 relocation += symbol->section->output_offset;
1854
1855 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1856 return bfd_reloc_outofrange;
1857
1858 if (reloc_entry->howto->src_mask == 0)
1859 val = 0;
1860 else
1861 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1862
1863 /* Set val to the offset into the section or symbol. */
1864 val += reloc_entry->addend;
1865
1866 /* Adjust val for the final section location and GP value. If we
1867 are producing relocatable output, we don't want to do this for
1868 an external symbol. */
1869 if (! relocatable
1870 || (symbol->flags & BSF_SECTION_SYM) != 0)
1871 val += relocation - gp;
1872
1873 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1874
1875 if (relocatable)
1876 reloc_entry->address += input_section->output_offset;
1877
1878 return bfd_reloc_ok;
1879 }
1880
1881 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
1882 the rest is at bits 6-10. The bitpos already got right by the howto. */
1883
1884 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)1885 mips_elf_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1886 void *data, asection *input_section, bfd *output_bfd,
1887 char **error_message)
1888 {
1889 if (reloc_entry->howto->partial_inplace)
1890 {
1891 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0)
1892 | (reloc_entry->addend & 0x00000800) >> 9);
1893 }
1894
1895 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1896 input_section, output_bfd,
1897 error_message);
1898 }
1899
1900 /* Handle a mips16 jump. */
1901
1902 static bfd_reloc_status_type
mips16_jump_reloc(bfd * abfd ATTRIBUTE_UNUSED,arelent * reloc_entry ATTRIBUTE_UNUSED,asymbol * symbol ATTRIBUTE_UNUSED,void * data ATTRIBUTE_UNUSED,asection * input_section,bfd * output_bfd ATTRIBUTE_UNUSED,char ** error_message ATTRIBUTE_UNUSED)1903 mips16_jump_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1904 arelent *reloc_entry ATTRIBUTE_UNUSED,
1905 asymbol *symbol ATTRIBUTE_UNUSED,
1906 void *data ATTRIBUTE_UNUSED,
1907 asection *input_section, bfd *output_bfd ATTRIBUTE_UNUSED,
1908 char **error_message ATTRIBUTE_UNUSED)
1909 {
1910 static bfd_boolean warned = FALSE;
1911
1912 /* FIXME. */
1913 if (! warned)
1914 (*_bfd_error_handler)
1915 (_("Linking mips16 objects into %s format is not supported"),
1916 bfd_get_target (input_section->output_section->owner));
1917 warned = TRUE;
1918
1919 return bfd_reloc_undefined;
1920 }
1921
1922 /* Handle a mips16 GP relative reloc. */
1923
1924 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)1925 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1926 void *data, asection *input_section, bfd *output_bfd,
1927 char **error_message)
1928 {
1929 bfd_boolean relocatable;
1930 bfd_reloc_status_type ret;
1931 bfd_byte *location;
1932 bfd_vma gp;
1933
1934 /* If we're relocating, and this is an external symbol, we don't want
1935 to change anything. */
1936 if (output_bfd != NULL
1937 && (symbol->flags & BSF_SECTION_SYM) == 0
1938 && (symbol->flags & BSF_LOCAL) != 0)
1939 {
1940 reloc_entry->address += input_section->output_offset;
1941 return bfd_reloc_ok;
1942 }
1943
1944 if (output_bfd != NULL)
1945 relocatable = TRUE;
1946 else
1947 {
1948 relocatable = FALSE;
1949 output_bfd = symbol->section->output_section->owner;
1950 }
1951
1952 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1953 &gp);
1954 if (ret != bfd_reloc_ok)
1955 return ret;
1956
1957 location = (bfd_byte *) data + reloc_entry->address;
1958 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1959 location);
1960 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1961 input_section, relocatable,
1962 data, gp);
1963 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1964 location);
1965
1966 return ret;
1967 }
1968
1969 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1970
1971 struct elf_reloc_map {
1972 bfd_reloc_code_real_type bfd_val;
1973 enum elf_mips_reloc_type elf_val;
1974 };
1975
1976 static const struct elf_reloc_map mips_reloc_map[] =
1977 {
1978 { BFD_RELOC_NONE, R_MIPS_NONE },
1979 { BFD_RELOC_16, R_MIPS_16 },
1980 { BFD_RELOC_32, R_MIPS_32 },
1981 /* There is no BFD reloc for R_MIPS_REL32. */
1982 { BFD_RELOC_CTOR, R_MIPS_32 },
1983 { BFD_RELOC_64, R_MIPS_64 },
1984 { BFD_RELOC_16_PCREL, R_MIPS_PC16 },
1985 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1986 { BFD_RELOC_LO16, R_MIPS_LO16 },
1987 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1988 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1989 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1990 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1991 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1992 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1993 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
1994 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
1995 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
1996 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1997 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1998 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1999 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
2000 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
2001 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
2002 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
2003 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
2004 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
2005 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
2006 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
2007 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
2008 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
2009 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
2010 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
2011 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
2012 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR },
2013 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
2014 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
2015 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
2016 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
2017 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
2018 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
2019 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
2020 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
2021 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
2022 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
2023 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
2024 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
2025 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
2026 };
2027
2028 static const struct elf_reloc_map mips16_reloc_map[] =
2029 {
2030 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
2031 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
2032 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
2033 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
2034 };
2035
2036 /* Given a BFD reloc type, return a howto structure. */
2037
2038 static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup(bfd * abfd ATTRIBUTE_UNUSED,bfd_reloc_code_real_type code)2039 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2040 bfd_reloc_code_real_type code)
2041 {
2042 unsigned int i;
2043 /* FIXME: We default to RELA here instead of choosing the right
2044 relocation variant. */
2045 reloc_howto_type *howto_table = elf_mips_howto_table_rela;
2046 reloc_howto_type *howto16_table = elf_mips16_howto_table_rela;
2047
2048 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
2049 i++)
2050 {
2051 if (mips_reloc_map[i].bfd_val == code)
2052 return &howto_table[(int) mips_reloc_map[i].elf_val];
2053 }
2054
2055 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
2056 i++)
2057 {
2058 if (mips16_reloc_map[i].bfd_val == code)
2059 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
2060 }
2061
2062 switch (code)
2063 {
2064 case BFD_RELOC_VTABLE_INHERIT:
2065 return &elf_mips_gnu_vtinherit_howto;
2066 case BFD_RELOC_VTABLE_ENTRY:
2067 return &elf_mips_gnu_vtentry_howto;
2068 case BFD_RELOC_16_PCREL_S2:
2069 return &elf_mips_gnu_rela16_s2;
2070 default:
2071 bfd_set_error (bfd_error_bad_value);
2072 return NULL;
2073 }
2074 }
2075
2076 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2077
2078 static reloc_howto_type *
mips_elf_n32_rtype_to_howto(unsigned int r_type,bfd_boolean rela_p)2079 mips_elf_n32_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
2080 {
2081 switch (r_type)
2082 {
2083 case R_MIPS_GNU_VTINHERIT:
2084 return &elf_mips_gnu_vtinherit_howto;
2085 case R_MIPS_GNU_VTENTRY:
2086 return &elf_mips_gnu_vtentry_howto;
2087 case R_MIPS_GNU_REL16_S2:
2088 if (rela_p)
2089 return &elf_mips_gnu_rela16_s2;
2090 else
2091 return &elf_mips_gnu_rel16_s2;
2092 default:
2093 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
2094 {
2095 if (rela_p)
2096 return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min];
2097 else
2098 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
2099 }
2100 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
2101 if (rela_p)
2102 return &elf_mips_howto_table_rela[r_type];
2103 else
2104 return &elf_mips_howto_table_rel[r_type];
2105 break;
2106 }
2107 }
2108
2109 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2110
2111 static void
mips_info_to_howto_rel(bfd * abfd,arelent * cache_ptr,Elf_Internal_Rela * dst)2112 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
2113 {
2114 unsigned int r_type;
2115
2116 r_type = ELF32_R_TYPE (dst->r_info);
2117 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, FALSE);
2118
2119 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
2120 value for the object file. We get the addend now, rather than
2121 when we do the relocation, because the symbol manipulations done
2122 by the linker may cause us to lose track of the input BFD. */
2123 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
2124 && (r_type == (unsigned int) R_MIPS_GPREL16
2125 || r_type == (unsigned int) R_MIPS_LITERAL))
2126 cache_ptr->addend = elf_gp (abfd);
2127 }
2128
2129 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
2130
2131 static void
mips_info_to_howto_rela(bfd * abfd ATTRIBUTE_UNUSED,arelent * cache_ptr,Elf_Internal_Rela * dst)2132 mips_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
2133 arelent *cache_ptr, Elf_Internal_Rela *dst)
2134 {
2135 unsigned int r_type;
2136
2137 r_type = ELF32_R_TYPE (dst->r_info);
2138 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, TRUE);
2139 cache_ptr->addend = dst->r_addend;
2140 }
2141
2142 /* Determine whether a symbol is global for the purposes of splitting
2143 the symbol table into global symbols and local symbols. At least
2144 on Irix 5, this split must be between section symbols and all other
2145 symbols. On most ELF targets the split is between static symbols
2146 and externally visible symbols. */
2147
2148 static bfd_boolean
mips_elf_sym_is_global(bfd * abfd ATTRIBUTE_UNUSED,asymbol * sym)2149 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
2150 {
2151 if (SGI_COMPAT (abfd))
2152 return (sym->flags & BSF_SECTION_SYM) == 0;
2153 else
2154 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2155 || bfd_is_und_section (bfd_get_section (sym))
2156 || bfd_is_com_section (bfd_get_section (sym)));
2157 }
2158
2159 /* Set the right machine number for a MIPS ELF file. */
2160
2161 static bfd_boolean
mips_elf_n32_object_p(bfd * abfd)2162 mips_elf_n32_object_p (bfd *abfd)
2163 {
2164 unsigned long mach;
2165
2166 /* Irix 5 and 6 are broken. Object file symbol tables are not always
2167 sorted correctly such that local symbols precede global symbols,
2168 and the sh_info field in the symbol table is not always right. */
2169 if (SGI_COMPAT (abfd))
2170 elf_bad_symtab (abfd) = TRUE;
2171
2172 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
2173 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
2174
2175 if (! ABI_N32_P(abfd))
2176 return FALSE;
2177
2178 return TRUE;
2179 }
2180
2181 /* Support for core dump NOTE sections. */
2182 static bfd_boolean
elf32_mips_grok_prstatus(bfd * abfd,Elf_Internal_Note * note)2183 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2184 {
2185 int offset;
2186 unsigned int size;
2187
2188 switch (note->descsz)
2189 {
2190 default:
2191 return FALSE;
2192
2193 case 440: /* Linux/MIPS N32 */
2194 /* pr_cursig */
2195 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2196
2197 /* pr_pid */
2198 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
2199
2200 /* pr_reg */
2201 offset = 72;
2202 size = 360;
2203
2204 break;
2205 }
2206
2207 /* Make a ".reg/999" section. */
2208 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
2209 note->descpos + offset);
2210 }
2211
2212 static bfd_boolean
elf32_mips_grok_psinfo(bfd * abfd,Elf_Internal_Note * note)2213 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2214 {
2215 switch (note->descsz)
2216 {
2217 default:
2218 return FALSE;
2219
2220 case 128: /* Linux/MIPS elf_prpsinfo */
2221 elf_tdata (abfd)->core_program
2222 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2223 elf_tdata (abfd)->core_command
2224 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2225 }
2226
2227 /* Note that for some reason, a spurious space is tacked
2228 onto the end of the args in some (at least one anyway)
2229 implementations, so strip it off if it exists. */
2230
2231 {
2232 char *command = elf_tdata (abfd)->core_command;
2233 int n = strlen (command);
2234
2235 if (0 < n && command[n - 1] == ' ')
2236 command[n - 1] = '\0';
2237 }
2238
2239 return TRUE;
2240 }
2241
2242 /* Depending on the target vector we generate some version of Irix
2243 executables or "normal" MIPS ELF ABI executables. */
2244 static irix_compat_t
elf_n32_mips_irix_compat(bfd * abfd)2245 elf_n32_mips_irix_compat (bfd *abfd)
2246 {
2247 if ((abfd->xvec == &bfd_elf32_nbigmips_vec)
2248 || (abfd->xvec == &bfd_elf32_nlittlemips_vec))
2249 return ict_irix6;
2250 else
2251 return ict_none;
2252 }
2253
2254 /* ECOFF swapping routines. These are used when dealing with the
2255 .mdebug section, which is in the ECOFF debugging format. */
2256 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
2257 /* Symbol table magic number. */
2258 magicSym,
2259 /* Alignment of debugging information. E.g., 4. */
2260 4,
2261 /* Sizes of external symbolic information. */
2262 sizeof (struct hdr_ext),
2263 sizeof (struct dnr_ext),
2264 sizeof (struct pdr_ext),
2265 sizeof (struct sym_ext),
2266 sizeof (struct opt_ext),
2267 sizeof (struct fdr_ext),
2268 sizeof (struct rfd_ext),
2269 sizeof (struct ext_ext),
2270 /* Functions to swap in external symbolic data. */
2271 ecoff_swap_hdr_in,
2272 ecoff_swap_dnr_in,
2273 ecoff_swap_pdr_in,
2274 ecoff_swap_sym_in,
2275 ecoff_swap_opt_in,
2276 ecoff_swap_fdr_in,
2277 ecoff_swap_rfd_in,
2278 ecoff_swap_ext_in,
2279 _bfd_ecoff_swap_tir_in,
2280 _bfd_ecoff_swap_rndx_in,
2281 /* Functions to swap out external symbolic data. */
2282 ecoff_swap_hdr_out,
2283 ecoff_swap_dnr_out,
2284 ecoff_swap_pdr_out,
2285 ecoff_swap_sym_out,
2286 ecoff_swap_opt_out,
2287 ecoff_swap_fdr_out,
2288 ecoff_swap_rfd_out,
2289 ecoff_swap_ext_out,
2290 _bfd_ecoff_swap_tir_out,
2291 _bfd_ecoff_swap_rndx_out,
2292 /* Function to read in symbolic data. */
2293 _bfd_mips_elf_read_ecoff_info
2294 };
2295
2296 #define ELF_ARCH bfd_arch_mips
2297 #define ELF_MACHINE_CODE EM_MIPS
2298
2299 #define elf_backend_collect TRUE
2300 #define elf_backend_type_change_ok TRUE
2301 #define elf_backend_can_gc_sections TRUE
2302 #define elf_info_to_howto mips_info_to_howto_rela
2303 #define elf_info_to_howto_rel mips_info_to_howto_rel
2304 #define elf_backend_sym_is_global mips_elf_sym_is_global
2305 #define elf_backend_object_p mips_elf_n32_object_p
2306 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
2307 #define elf_backend_section_processing _bfd_mips_elf_section_processing
2308 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
2309 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
2310 #define elf_backend_section_from_bfd_section \
2311 _bfd_mips_elf_section_from_bfd_section
2312 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
2313 #define elf_backend_link_output_symbol_hook \
2314 _bfd_mips_elf_link_output_symbol_hook
2315 #define elf_backend_create_dynamic_sections \
2316 _bfd_mips_elf_create_dynamic_sections
2317 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
2318 #define elf_backend_adjust_dynamic_symbol \
2319 _bfd_mips_elf_adjust_dynamic_symbol
2320 #define elf_backend_always_size_sections \
2321 _bfd_mips_elf_always_size_sections
2322 #define elf_backend_size_dynamic_sections \
2323 _bfd_mips_elf_size_dynamic_sections
2324 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
2325 #define elf_backend_finish_dynamic_symbol \
2326 _bfd_mips_elf_finish_dynamic_symbol
2327 #define elf_backend_finish_dynamic_sections \
2328 _bfd_mips_elf_finish_dynamic_sections
2329 #define elf_backend_final_write_processing \
2330 _bfd_mips_elf_final_write_processing
2331 #define elf_backend_additional_program_headers \
2332 _bfd_mips_elf_additional_program_headers
2333 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
2334 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
2335 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
2336 #define elf_backend_copy_indirect_symbol \
2337 _bfd_mips_elf_copy_indirect_symbol
2338 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
2339 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
2340 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
2341 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
2342
2343 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
2344
2345 /* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations
2346 work better/work only in RELA, so we default to this. */
2347 #define elf_backend_may_use_rel_p 1
2348 #define elf_backend_may_use_rela_p 1
2349 #define elf_backend_default_use_rela_p 1
2350 #define elf_backend_sign_extend_vma TRUE
2351
2352 #define elf_backend_discard_info _bfd_mips_elf_discard_info
2353 #define elf_backend_ignore_discarded_relocs \
2354 _bfd_mips_elf_ignore_discarded_relocs
2355 #define elf_backend_write_section _bfd_mips_elf_write_section
2356 #define elf_backend_mips_irix_compat elf_n32_mips_irix_compat
2357 #define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto
2358 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
2359 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
2360 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
2361 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
2362 #define bfd_elf32_bfd_get_relocated_section_contents \
2363 _bfd_elf_mips_get_relocated_section_contents
2364 #define bfd_elf32_bfd_link_hash_table_create \
2365 _bfd_mips_elf_link_hash_table_create
2366 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
2367 #define bfd_elf32_bfd_merge_private_bfd_data \
2368 _bfd_mips_elf_merge_private_bfd_data
2369 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
2370 #define bfd_elf32_bfd_print_private_bfd_data \
2371 _bfd_mips_elf_print_private_bfd_data
2372 #define bfd_elf32_bfd_relax_section _bfd_mips_relax_section
2373
2374 /* Support for SGI-ish mips targets using n32 ABI. */
2375
2376 #define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec
2377 #define TARGET_LITTLE_NAME "elf32-nlittlemips"
2378 #define TARGET_BIG_SYM bfd_elf32_nbigmips_vec
2379 #define TARGET_BIG_NAME "elf32-nbigmips"
2380
2381 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
2382 a value of 0x1000, and we are compatible.
2383 FIXME: How does this affect NewABI? */
2384 #define ELF_MAXPAGESIZE 0x1000
2385
2386 #include "elf32-target.h"
2387
2388 /* Support for traditional mips targets using n32 ABI. */
2389 #undef TARGET_LITTLE_SYM
2390 #undef TARGET_LITTLE_NAME
2391 #undef TARGET_BIG_SYM
2392 #undef TARGET_BIG_NAME
2393
2394 #undef ELF_MAXPAGESIZE
2395
2396 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec
2397 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips"
2398 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec
2399 #define TARGET_BIG_NAME "elf32-ntradbigmips"
2400
2401 /* The SVR4 MIPS ABI says that this should be 0x10000, and Linux uses
2402 page sizes of up to that limit, so we need to respect it. */
2403 #define ELF_MAXPAGESIZE 0x10000
2404 #define elf32_bed elf32_tradbed
2405
2406 /* Include the target file again for this target. */
2407 #include "elf32-target.h"
2408