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PR binutils/2735
[deliverable/binutils-gdb.git] / bfd / elf32-mips.c
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 #include "elf-vxworks.h"
41
42 /* Get the ECOFF swapping routines. */
43 #include "coff/sym.h"
44 #include "coff/symconst.h"
45 #include "coff/internal.h"
46 #include "coff/ecoff.h"
47 #include "coff/mips.h"
48 #define ECOFF_SIGNED_32
49 #include "ecoffswap.h"
50
51 static bfd_reloc_status_type gprel32_with_gp
52 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
53 static bfd_reloc_status_type mips_elf_gprel32_reloc
54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
55 static bfd_reloc_status_type mips32_64bit_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
58 (bfd *, bfd_reloc_code_real_type);
59 static reloc_howto_type *mips_elf32_rtype_to_howto
60 (unsigned int, bfd_boolean);
61 static void mips_info_to_howto_rel
62 (bfd *, arelent *, Elf_Internal_Rela *);
63 static void mips_info_to_howto_rela
64 (bfd *, arelent *, Elf_Internal_Rela *);
65 static bfd_boolean mips_elf_sym_is_global
66 (bfd *, asymbol *);
67 static bfd_boolean mips_elf32_object_p
68 (bfd *);
69 static bfd_boolean mips_elf_is_local_label_name
70 (bfd *, const char *);
71 static bfd_reloc_status_type mips16_jump_reloc
72 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
73 static bfd_reloc_status_type mips16_gprel_reloc
74 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
75 static bfd_reloc_status_type mips_elf_final_gp
76 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
77 static bfd_boolean mips_elf_assign_gp
78 (bfd *, bfd_vma *);
79 static bfd_boolean elf32_mips_grok_prstatus
80 (bfd *, Elf_Internal_Note *);
81 static bfd_boolean elf32_mips_grok_psinfo
82 (bfd *, Elf_Internal_Note *);
83 static irix_compat_t elf32_mips_irix_compat
84 (bfd *);
85
86 extern const bfd_target bfd_elf32_bigmips_vec;
87 extern const bfd_target bfd_elf32_littlemips_vec;
88
89 /* Nonzero if ABFD is using the N32 ABI. */
90 #define ABI_N32_P(abfd) \
91 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
92
93 /* Whether we are trying to be compatible with IRIX at all. */
94 #define SGI_COMPAT(abfd) \
95 (elf32_mips_irix_compat (abfd) != ict_none)
96
97 /* The number of local .got entries we reserve. */
98 #define MIPS_RESERVED_GOTNO (2)
99
100 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
101 from smaller values. Start with zero, widen, *then* decrement. */
102 #define MINUS_ONE (((bfd_vma)0) - 1)
103
104 /* The relocation table used for SHT_REL sections. */
105
106 static reloc_howto_type elf_mips_howto_table_rel[] =
107 {
108 /* No relocation. */
109 HOWTO (R_MIPS_NONE, /* type */
110 0, /* rightshift */
111 0, /* size (0 = byte, 1 = short, 2 = long) */
112 0, /* bitsize */
113 FALSE, /* pc_relative */
114 0, /* bitpos */
115 complain_overflow_dont, /* complain_on_overflow */
116 _bfd_mips_elf_generic_reloc, /* special_function */
117 "R_MIPS_NONE", /* name */
118 FALSE, /* partial_inplace */
119 0, /* src_mask */
120 0, /* dst_mask */
121 FALSE), /* pcrel_offset */
122
123 /* 16 bit relocation. */
124 HOWTO (R_MIPS_16, /* type */
125 0, /* rightshift */
126 2, /* size (0 = byte, 1 = short, 2 = long) */
127 16, /* bitsize */
128 FALSE, /* pc_relative */
129 0, /* bitpos */
130 complain_overflow_signed, /* complain_on_overflow */
131 _bfd_mips_elf_generic_reloc, /* special_function */
132 "R_MIPS_16", /* name */
133 TRUE, /* partial_inplace */
134 0x0000ffff, /* src_mask */
135 0x0000ffff, /* dst_mask */
136 FALSE), /* pcrel_offset */
137
138 /* 32 bit relocation. */
139 HOWTO (R_MIPS_32, /* type */
140 0, /* rightshift */
141 2, /* size (0 = byte, 1 = short, 2 = long) */
142 32, /* bitsize */
143 FALSE, /* pc_relative */
144 0, /* bitpos */
145 complain_overflow_dont, /* complain_on_overflow */
146 _bfd_mips_elf_generic_reloc, /* special_function */
147 "R_MIPS_32", /* name */
148 TRUE, /* partial_inplace */
149 0xffffffff, /* src_mask */
150 0xffffffff, /* dst_mask */
151 FALSE), /* pcrel_offset */
152
153 /* 32 bit symbol relative relocation. */
154 HOWTO (R_MIPS_REL32, /* type */
155 0, /* rightshift */
156 2, /* size (0 = byte, 1 = short, 2 = long) */
157 32, /* bitsize */
158 FALSE, /* pc_relative */
159 0, /* bitpos */
160 complain_overflow_dont, /* complain_on_overflow */
161 _bfd_mips_elf_generic_reloc, /* special_function */
162 "R_MIPS_REL32", /* name */
163 TRUE, /* partial_inplace */
164 0xffffffff, /* src_mask */
165 0xffffffff, /* dst_mask */
166 FALSE), /* pcrel_offset */
167
168 /* 26 bit jump address. */
169 HOWTO (R_MIPS_26, /* type */
170 2, /* rightshift */
171 2, /* size (0 = byte, 1 = short, 2 = long) */
172 26, /* bitsize */
173 FALSE, /* pc_relative */
174 0, /* bitpos */
175 complain_overflow_dont, /* complain_on_overflow */
176 /* This needs complex overflow
177 detection, because the upper four
178 bits must match the PC + 4. */
179 _bfd_mips_elf_generic_reloc, /* special_function */
180 "R_MIPS_26", /* name */
181 TRUE, /* partial_inplace */
182 0x03ffffff, /* src_mask */
183 0x03ffffff, /* dst_mask */
184 FALSE), /* pcrel_offset */
185
186 /* High 16 bits of symbol value. */
187 HOWTO (R_MIPS_HI16, /* type */
188 16, /* rightshift */
189 2, /* size (0 = byte, 1 = short, 2 = long) */
190 16, /* bitsize */
191 FALSE, /* pc_relative */
192 0, /* bitpos */
193 complain_overflow_dont, /* complain_on_overflow */
194 _bfd_mips_elf_hi16_reloc, /* special_function */
195 "R_MIPS_HI16", /* name */
196 TRUE, /* partial_inplace */
197 0x0000ffff, /* src_mask */
198 0x0000ffff, /* dst_mask */
199 FALSE), /* pcrel_offset */
200
201 /* Low 16 bits of symbol value. */
202 HOWTO (R_MIPS_LO16, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 16, /* bitsize */
206 FALSE, /* pc_relative */
207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
209 _bfd_mips_elf_lo16_reloc, /* special_function */
210 "R_MIPS_LO16", /* name */
211 TRUE, /* partial_inplace */
212 0x0000ffff, /* src_mask */
213 0x0000ffff, /* dst_mask */
214 FALSE), /* pcrel_offset */
215
216 /* GP relative reference. */
217 HOWTO (R_MIPS_GPREL16, /* type */
218 0, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 16, /* bitsize */
221 FALSE, /* pc_relative */
222 0, /* bitpos */
223 complain_overflow_signed, /* complain_on_overflow */
224 _bfd_mips_elf32_gprel16_reloc, /* special_function */
225 "R_MIPS_GPREL16", /* name */
226 TRUE, /* partial_inplace */
227 0x0000ffff, /* src_mask */
228 0x0000ffff, /* dst_mask */
229 FALSE), /* pcrel_offset */
230
231 /* Reference to literal section. */
232 HOWTO (R_MIPS_LITERAL, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 16, /* bitsize */
236 FALSE, /* pc_relative */
237 0, /* bitpos */
238 complain_overflow_signed, /* complain_on_overflow */
239 _bfd_mips_elf32_gprel16_reloc, /* special_function */
240 "R_MIPS_LITERAL", /* name */
241 TRUE, /* partial_inplace */
242 0x0000ffff, /* src_mask */
243 0x0000ffff, /* dst_mask */
244 FALSE), /* pcrel_offset */
245
246 /* Reference to global offset table. */
247 HOWTO (R_MIPS_GOT16, /* type */
248 0, /* rightshift */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
251 FALSE, /* pc_relative */
252 0, /* bitpos */
253 complain_overflow_signed, /* complain_on_overflow */
254 _bfd_mips_elf_got16_reloc, /* special_function */
255 "R_MIPS_GOT16", /* name */
256 TRUE, /* partial_inplace */
257 0x0000ffff, /* src_mask */
258 0x0000ffff, /* dst_mask */
259 FALSE), /* pcrel_offset */
260
261 /* 16 bit PC relative reference. Note that the ABI document has a typo
262 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
263 We do the right thing here. */
264 HOWTO (R_MIPS_PC16, /* type */
265 2, /* rightshift */
266 2, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
268 TRUE, /* pc_relative */
269 0, /* bitpos */
270 complain_overflow_signed, /* complain_on_overflow */
271 _bfd_mips_elf_generic_reloc, /* special_function */
272 "R_MIPS_PC16", /* name */
273 TRUE, /* partial_inplace */
274 0x0000ffff, /* src_mask */
275 0x0000ffff, /* dst_mask */
276 TRUE), /* pcrel_offset */
277
278 /* 16 bit call through global offset table. */
279 HOWTO (R_MIPS_CALL16, /* type */
280 0, /* rightshift */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
283 FALSE, /* pc_relative */
284 0, /* bitpos */
285 complain_overflow_signed, /* complain_on_overflow */
286 _bfd_mips_elf_generic_reloc, /* special_function */
287 "R_MIPS_CALL16", /* name */
288 TRUE, /* partial_inplace */
289 0x0000ffff, /* src_mask */
290 0x0000ffff, /* dst_mask */
291 FALSE), /* pcrel_offset */
292
293 /* 32 bit GP relative reference. */
294 HOWTO (R_MIPS_GPREL32, /* type */
295 0, /* rightshift */
296 2, /* size (0 = byte, 1 = short, 2 = long) */
297 32, /* bitsize */
298 FALSE, /* pc_relative */
299 0, /* bitpos */
300 complain_overflow_dont, /* complain_on_overflow */
301 mips_elf_gprel32_reloc, /* special_function */
302 "R_MIPS_GPREL32", /* name */
303 TRUE, /* partial_inplace */
304 0xffffffff, /* src_mask */
305 0xffffffff, /* dst_mask */
306 FALSE), /* pcrel_offset */
307
308 /* The remaining relocs are defined on Irix 5, although they are
309 not defined by the ABI. */
310 EMPTY_HOWTO (13),
311 EMPTY_HOWTO (14),
312 EMPTY_HOWTO (15),
313
314 /* A 5 bit shift field. */
315 HOWTO (R_MIPS_SHIFT5, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 5, /* bitsize */
319 FALSE, /* pc_relative */
320 6, /* bitpos */
321 complain_overflow_bitfield, /* complain_on_overflow */
322 _bfd_mips_elf_generic_reloc, /* special_function */
323 "R_MIPS_SHIFT5", /* name */
324 TRUE, /* partial_inplace */
325 0x000007c0, /* src_mask */
326 0x000007c0, /* dst_mask */
327 FALSE), /* pcrel_offset */
328
329 /* A 6 bit shift field. */
330 /* FIXME: This is not handled correctly; a special function is
331 needed to put the most significant bit in the right place. */
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 _bfd_mips_elf_generic_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 mips32_64bit_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. Used in the N32 ABI. */
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 /* Used to cause the linker to insert and delete instructions? */
452 EMPTY_HOWTO (R_MIPS_INSERT_A),
453 EMPTY_HOWTO (R_MIPS_INSERT_B),
454 EMPTY_HOWTO (R_MIPS_DELETE),
455
456 /* Get the higher value of a 64 bit addend. */
457 HOWTO (R_MIPS_HIGHER, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
461 FALSE, /* pc_relative */
462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
464 _bfd_mips_elf_generic_reloc, /* special_function */
465 "R_MIPS_HIGHER", /* name */
466 TRUE, /* partial_inplace */
467 0x0000ffff, /* src_mask */
468 0x0000ffff, /* dst_mask */
469 FALSE), /* pcrel_offset */
470
471 /* Get the highest value of a 64 bit addend. */
472 HOWTO (R_MIPS_HIGHEST, /* type */
473 0, /* rightshift */
474 2, /* size (0 = byte, 1 = short, 2 = long) */
475 16, /* bitsize */
476 FALSE, /* pc_relative */
477 0, /* bitpos */
478 complain_overflow_dont, /* complain_on_overflow */
479 _bfd_mips_elf_generic_reloc, /* special_function */
480 "R_MIPS_HIGHEST", /* name */
481 TRUE, /* partial_inplace */
482 0x0000ffff, /* src_mask */
483 0x0000ffff, /* dst_mask */
484 FALSE), /* pcrel_offset */
485
486 /* High 16 bits of displacement in global offset table. */
487 HOWTO (R_MIPS_CALL_HI16, /* type */
488 0, /* rightshift */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
490 16, /* bitsize */
491 FALSE, /* pc_relative */
492 0, /* bitpos */
493 complain_overflow_dont, /* complain_on_overflow */
494 _bfd_mips_elf_generic_reloc, /* special_function */
495 "R_MIPS_CALL_HI16", /* name */
496 TRUE, /* partial_inplace */
497 0x0000ffff, /* src_mask */
498 0x0000ffff, /* dst_mask */
499 FALSE), /* pcrel_offset */
500
501 /* Low 16 bits of displacement in global offset table. */
502 HOWTO (R_MIPS_CALL_LO16, /* type */
503 0, /* rightshift */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
505 16, /* bitsize */
506 FALSE, /* pc_relative */
507 0, /* bitpos */
508 complain_overflow_dont, /* complain_on_overflow */
509 _bfd_mips_elf_generic_reloc, /* special_function */
510 "R_MIPS_CALL_LO16", /* name */
511 TRUE, /* partial_inplace */
512 0x0000ffff, /* src_mask */
513 0x0000ffff, /* dst_mask */
514 FALSE), /* pcrel_offset */
515
516 /* Section displacement. */
517 HOWTO (R_MIPS_SCN_DISP, /* type */
518 0, /* rightshift */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
521 FALSE, /* pc_relative */
522 0, /* bitpos */
523 complain_overflow_dont, /* complain_on_overflow */
524 _bfd_mips_elf_generic_reloc, /* special_function */
525 "R_MIPS_SCN_DISP", /* name */
526 TRUE, /* partial_inplace */
527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
529 FALSE), /* pcrel_offset */
530
531 EMPTY_HOWTO (R_MIPS_REL16),
532 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
533 EMPTY_HOWTO (R_MIPS_PJUMP),
534 EMPTY_HOWTO (R_MIPS_RELGOT),
535
536 /* Protected jump conversion. This is an optimization hint. No
537 relocation is required for correctness. */
538 HOWTO (R_MIPS_JALR, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 32, /* bitsize */
542 FALSE, /* pc_relative */
543 0, /* bitpos */
544 complain_overflow_dont, /* complain_on_overflow */
545 _bfd_mips_elf_generic_reloc, /* special_function */
546 "R_MIPS_JALR", /* name */
547 FALSE, /* partial_inplace */
548 0x00000000, /* src_mask */
549 0x00000000, /* dst_mask */
550 FALSE), /* pcrel_offset */
551
552 /* TLS GD/LD dynamic relocations. */
553 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
554 0, /* rightshift */
555 2, /* size (0 = byte, 1 = short, 2 = long) */
556 32, /* bitsize */
557 FALSE, /* pc_relative */
558 0, /* bitpos */
559 complain_overflow_dont, /* complain_on_overflow */
560 _bfd_mips_elf_generic_reloc, /* special_function */
561 "R_MIPS_TLS_DTPMOD32", /* name */
562 TRUE, /* partial_inplace */
563 0xffffffff, /* src_mask */
564 0xffffffff, /* dst_mask */
565 FALSE), /* pcrel_offset */
566
567 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
568 0, /* rightshift */
569 2, /* size (0 = byte, 1 = short, 2 = long) */
570 32, /* bitsize */
571 FALSE, /* pc_relative */
572 0, /* bitpos */
573 complain_overflow_dont, /* complain_on_overflow */
574 _bfd_mips_elf_generic_reloc, /* special_function */
575 "R_MIPS_TLS_DTPREL32", /* name */
576 TRUE, /* partial_inplace */
577 0xffffffff, /* src_mask */
578 0xffffffff, /* dst_mask */
579 FALSE), /* pcrel_offset */
580
581 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
582 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
583
584 /* TLS general dynamic variable reference. */
585 HOWTO (R_MIPS_TLS_GD, /* type */
586 0, /* rightshift */
587 2, /* size (0 = byte, 1 = short, 2 = long) */
588 16, /* bitsize */
589 FALSE, /* pc_relative */
590 0, /* bitpos */
591 complain_overflow_signed, /* complain_on_overflow */
592 _bfd_mips_elf_generic_reloc, /* special_function */
593 "R_MIPS_TLS_GD", /* name */
594 TRUE, /* partial_inplace */
595 0x0000ffff, /* src_mask */
596 0x0000ffff, /* dst_mask */
597 FALSE), /* pcrel_offset */
598
599 /* TLS local dynamic variable reference. */
600 HOWTO (R_MIPS_TLS_LDM, /* type */
601 0, /* rightshift */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
603 16, /* bitsize */
604 FALSE, /* pc_relative */
605 0, /* bitpos */
606 complain_overflow_signed, /* complain_on_overflow */
607 _bfd_mips_elf_generic_reloc, /* special_function */
608 "R_MIPS_TLS_LDM", /* name */
609 TRUE, /* partial_inplace */
610 0x0000ffff, /* src_mask */
611 0x0000ffff, /* dst_mask */
612 FALSE), /* pcrel_offset */
613
614 /* TLS local dynamic offset. */
615 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
616 0, /* rightshift */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
618 16, /* bitsize */
619 FALSE, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_signed, /* complain_on_overflow */
622 _bfd_mips_elf_generic_reloc, /* special_function */
623 "R_MIPS_TLS_DTPREL_HI16", /* name */
624 TRUE, /* partial_inplace */
625 0x0000ffff, /* src_mask */
626 0x0000ffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
628
629 /* TLS local dynamic offset. */
630 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
631 0, /* rightshift */
632 2, /* size (0 = byte, 1 = short, 2 = long) */
633 16, /* bitsize */
634 FALSE, /* pc_relative */
635 0, /* bitpos */
636 complain_overflow_signed, /* complain_on_overflow */
637 _bfd_mips_elf_generic_reloc, /* special_function */
638 "R_MIPS_TLS_DTPREL_LO16", /* name */
639 TRUE, /* partial_inplace */
640 0x0000ffff, /* src_mask */
641 0x0000ffff, /* dst_mask */
642 FALSE), /* pcrel_offset */
643
644 /* TLS thread pointer offset. */
645 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
646 0, /* rightshift */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
648 16, /* bitsize */
649 FALSE, /* pc_relative */
650 0, /* bitpos */
651 complain_overflow_signed, /* complain_on_overflow */
652 _bfd_mips_elf_generic_reloc, /* special_function */
653 "R_MIPS_TLS_GOTTPREL", /* name */
654 TRUE, /* partial_inplace */
655 0x0000ffff, /* src_mask */
656 0x0000ffff, /* dst_mask */
657 FALSE), /* pcrel_offset */
658
659 /* TLS IE dynamic relocations. */
660 HOWTO (R_MIPS_TLS_TPREL32, /* type */
661 0, /* rightshift */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
663 32, /* bitsize */
664 FALSE, /* pc_relative */
665 0, /* bitpos */
666 complain_overflow_dont, /* complain_on_overflow */
667 _bfd_mips_elf_generic_reloc, /* special_function */
668 "R_MIPS_TLS_TPREL32", /* name */
669 TRUE, /* partial_inplace */
670 0xffffffff, /* src_mask */
671 0xffffffff, /* dst_mask */
672 FALSE), /* pcrel_offset */
673
674 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
675
676 /* TLS thread pointer offset. */
677 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
678 0, /* rightshift */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
680 16, /* bitsize */
681 FALSE, /* pc_relative */
682 0, /* bitpos */
683 complain_overflow_signed, /* complain_on_overflow */
684 _bfd_mips_elf_generic_reloc, /* special_function */
685 "R_MIPS_TLS_TPREL_HI16", /* name */
686 TRUE, /* partial_inplace */
687 0x0000ffff, /* src_mask */
688 0x0000ffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
690
691 /* TLS thread pointer offset. */
692 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
693 0, /* rightshift */
694 2, /* size (0 = byte, 1 = short, 2 = long) */
695 16, /* bitsize */
696 FALSE, /* pc_relative */
697 0, /* bitpos */
698 complain_overflow_signed, /* complain_on_overflow */
699 _bfd_mips_elf_generic_reloc, /* special_function */
700 "R_MIPS_TLS_TPREL_LO16", /* name */
701 TRUE, /* partial_inplace */
702 0x0000ffff, /* src_mask */
703 0x0000ffff, /* dst_mask */
704 FALSE), /* pcrel_offset */
705 };
706
707 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
708 is a hack to make the linker think that we need 64 bit values. */
709 static reloc_howto_type elf_mips_ctor64_howto =
710 HOWTO (R_MIPS_64, /* type */
711 0, /* rightshift */
712 4, /* size (0 = byte, 1 = short, 2 = long) */
713 32, /* bitsize */
714 FALSE, /* pc_relative */
715 0, /* bitpos */
716 complain_overflow_signed, /* complain_on_overflow */
717 mips32_64bit_reloc, /* special_function */
718 "R_MIPS_64", /* name */
719 TRUE, /* partial_inplace */
720 0xffffffff, /* src_mask */
721 0xffffffff, /* dst_mask */
722 FALSE); /* pcrel_offset */
723
724 static reloc_howto_type elf_mips16_howto_table_rel[] =
725 {
726 /* The reloc used for the mips16 jump instruction. */
727 HOWTO (R_MIPS16_26, /* type */
728 2, /* rightshift */
729 2, /* size (0 = byte, 1 = short, 2 = long) */
730 26, /* bitsize */
731 FALSE, /* pc_relative */
732 0, /* bitpos */
733 complain_overflow_dont, /* complain_on_overflow */
734 /* This needs complex overflow
735 detection, because the upper four
736 bits must match the PC. */
737 mips16_jump_reloc, /* special_function */
738 "R_MIPS16_26", /* name */
739 TRUE, /* partial_inplace */
740 0x3ffffff, /* src_mask */
741 0x3ffffff, /* dst_mask */
742 FALSE), /* pcrel_offset */
743
744 /* The reloc used for the mips16 gprel instruction. */
745 HOWTO (R_MIPS16_GPREL, /* type */
746 0, /* rightshift */
747 2, /* size (0 = byte, 1 = short, 2 = long) */
748 16, /* bitsize */
749 FALSE, /* pc_relative */
750 0, /* bitpos */
751 complain_overflow_signed, /* complain_on_overflow */
752 mips16_gprel_reloc, /* special_function */
753 "R_MIPS16_GPREL", /* name */
754 TRUE, /* partial_inplace */
755 0x0000ffff, /* src_mask */
756 0x0000ffff, /* dst_mask */
757 FALSE), /* pcrel_offset */
758
759 /* A placeholder for MIPS16 reference to global offset table. */
760 EMPTY_HOWTO (R_MIPS16_GOT16),
761
762 /* A placeholder for MIPS16 16 bit call through global offset table. */
763 EMPTY_HOWTO (R_MIPS16_CALL16),
764
765 /* MIPS16 high 16 bits of symbol value. */
766 HOWTO (R_MIPS16_HI16, /* type */
767 16, /* rightshift */
768 2, /* size (0 = byte, 1 = short, 2 = long) */
769 16, /* bitsize */
770 FALSE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 _bfd_mips_elf_hi16_reloc, /* special_function */
774 "R_MIPS16_HI16", /* name */
775 TRUE, /* partial_inplace */
776 0x0000ffff, /* src_mask */
777 0x0000ffff, /* dst_mask */
778 FALSE), /* pcrel_offset */
779
780 /* MIPS16 low 16 bits of symbol value. */
781 HOWTO (R_MIPS16_LO16, /* type */
782 0, /* rightshift */
783 2, /* size (0 = byte, 1 = short, 2 = long) */
784 16, /* bitsize */
785 FALSE, /* pc_relative */
786 0, /* bitpos */
787 complain_overflow_dont, /* complain_on_overflow */
788 _bfd_mips_elf_lo16_reloc, /* special_function */
789 "R_MIPS16_LO16", /* name */
790 TRUE, /* partial_inplace */
791 0x0000ffff, /* src_mask */
792 0x0000ffff, /* dst_mask */
793 FALSE), /* pcrel_offset */
794 };
795
796 /* 16 bit offset for pc-relative branches. */
797 static reloc_howto_type elf_mips_gnu_rel16_s2 =
798 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
799 2, /* rightshift */
800 2, /* size (0 = byte, 1 = short, 2 = long) */
801 16, /* bitsize */
802 TRUE, /* pc_relative */
803 0, /* bitpos */
804 complain_overflow_signed, /* complain_on_overflow */
805 _bfd_mips_elf_generic_reloc, /* special_function */
806 "R_MIPS_GNU_REL16_S2", /* name */
807 TRUE, /* partial_inplace */
808 0xffff, /* src_mask */
809 0xffff, /* dst_mask */
810 TRUE); /* pcrel_offset */
811
812 /* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
813 It was co-opted by mips-linux for exception-handling data. It is no
814 longer used, but should continue to be supported by the linker for
815 backward compatibility. (GCC stopped using it in May, 2004.) */
816 static reloc_howto_type elf_mips_gnu_pcrel32 =
817 HOWTO (R_MIPS_PC32, /* type */
818 0, /* rightshift */
819 2, /* size (0 = byte, 1 = short, 2 = long) */
820 32, /* bitsize */
821 TRUE, /* pc_relative */
822 0, /* bitpos */
823 complain_overflow_signed, /* complain_on_overflow */
824 _bfd_mips_elf_generic_reloc, /* special_function */
825 "R_MIPS_PC32", /* name */
826 TRUE, /* partial_inplace */
827 0xffffffff, /* src_mask */
828 0xffffffff, /* dst_mask */
829 TRUE); /* pcrel_offset */
830
831 /* GNU extension to record C++ vtable hierarchy */
832 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
833 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
834 0, /* rightshift */
835 2, /* size (0 = byte, 1 = short, 2 = long) */
836 0, /* bitsize */
837 FALSE, /* pc_relative */
838 0, /* bitpos */
839 complain_overflow_dont, /* complain_on_overflow */
840 NULL, /* special_function */
841 "R_MIPS_GNU_VTINHERIT", /* name */
842 FALSE, /* partial_inplace */
843 0, /* src_mask */
844 0, /* dst_mask */
845 FALSE); /* pcrel_offset */
846
847 /* GNU extension to record C++ vtable member usage */
848 static reloc_howto_type elf_mips_gnu_vtentry_howto =
849 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
850 0, /* rightshift */
851 2, /* size (0 = byte, 1 = short, 2 = long) */
852 0, /* bitsize */
853 FALSE, /* pc_relative */
854 0, /* bitpos */
855 complain_overflow_dont, /* complain_on_overflow */
856 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
857 "R_MIPS_GNU_VTENTRY", /* name */
858 FALSE, /* partial_inplace */
859 0, /* src_mask */
860 0, /* dst_mask */
861 FALSE); /* pcrel_offset */
862
863 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
864 dangerous relocation. */
865
866 static bfd_boolean
867 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
868 {
869 unsigned int count;
870 asymbol **sym;
871 unsigned int i;
872
873 /* If we've already figured out what GP will be, just return it. */
874 *pgp = _bfd_get_gp_value (output_bfd);
875 if (*pgp)
876 return TRUE;
877
878 count = bfd_get_symcount (output_bfd);
879 sym = bfd_get_outsymbols (output_bfd);
880
881 /* The linker script will have created a symbol named `_gp' with the
882 appropriate value. */
883 if (sym == NULL)
884 i = count;
885 else
886 {
887 for (i = 0; i < count; i++, sym++)
888 {
889 register const char *name;
890
891 name = bfd_asymbol_name (*sym);
892 if (*name == '_' && strcmp (name, "_gp") == 0)
893 {
894 *pgp = bfd_asymbol_value (*sym);
895 _bfd_set_gp_value (output_bfd, *pgp);
896 break;
897 }
898 }
899 }
900
901 if (i >= count)
902 {
903 /* Only get the error once. */
904 *pgp = 4;
905 _bfd_set_gp_value (output_bfd, *pgp);
906 return FALSE;
907 }
908
909 return TRUE;
910 }
911
912 /* We have to figure out the gp value, so that we can adjust the
913 symbol value correctly. We look up the symbol _gp in the output
914 BFD. If we can't find it, we're stuck. We cache it in the ELF
915 target data. We don't need to adjust the symbol value for an
916 external symbol if we are producing relocatable output. */
917
918 static bfd_reloc_status_type
919 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
920 char **error_message, bfd_vma *pgp)
921 {
922 if (bfd_is_und_section (symbol->section)
923 && ! relocatable)
924 {
925 *pgp = 0;
926 return bfd_reloc_undefined;
927 }
928
929 *pgp = _bfd_get_gp_value (output_bfd);
930 if (*pgp == 0
931 && (! relocatable
932 || (symbol->flags & BSF_SECTION_SYM) != 0))
933 {
934 if (relocatable)
935 {
936 /* Make up a value. */
937 *pgp = symbol->section->output_section->vma + 0x4000;
938 _bfd_set_gp_value (output_bfd, *pgp);
939 }
940 else if (!mips_elf_assign_gp (output_bfd, pgp))
941 {
942 *error_message =
943 (char *) _("GP relative relocation when _gp not defined");
944 return bfd_reloc_dangerous;
945 }
946 }
947
948 return bfd_reloc_ok;
949 }
950
951 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
952 become the offset from the gp register. This function also handles
953 R_MIPS_LITERAL relocations, although those can be handled more
954 cleverly because the entries in the .lit8 and .lit4 sections can be
955 merged. */
956
957 bfd_reloc_status_type
958 _bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
959 asymbol *symbol, void *data,
960 asection *input_section, bfd *output_bfd,
961 char **error_message)
962 {
963 bfd_boolean relocatable;
964 bfd_reloc_status_type ret;
965 bfd_vma gp;
966
967 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
968 if (reloc_entry->howto->type == R_MIPS_LITERAL
969 && output_bfd != NULL
970 && (symbol->flags & BSF_SECTION_SYM) == 0
971 && (symbol->flags & BSF_LOCAL) != 0)
972 {
973 *error_message = (char *)
974 _("literal relocation occurs for an external symbol");
975 return bfd_reloc_outofrange;
976 }
977
978 if (output_bfd != NULL)
979 relocatable = TRUE;
980 else
981 {
982 relocatable = FALSE;
983 output_bfd = symbol->section->output_section->owner;
984 }
985
986 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
987 &gp);
988 if (ret != bfd_reloc_ok)
989 return ret;
990
991 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
992 input_section, relocatable,
993 data, gp);
994 }
995
996 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
997 become the offset from the gp register. */
998
999 static bfd_reloc_status_type
1000 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1001 void *data, asection *input_section, bfd *output_bfd,
1002 char **error_message)
1003 {
1004 bfd_boolean relocatable;
1005 bfd_reloc_status_type ret;
1006 bfd_vma gp;
1007
1008 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1009 if (output_bfd != NULL
1010 && (symbol->flags & BSF_SECTION_SYM) == 0
1011 && (symbol->flags & BSF_LOCAL) != 0)
1012 {
1013 *error_message = (char *)
1014 _("32bits gp relative relocation occurs for an external symbol");
1015 return bfd_reloc_outofrange;
1016 }
1017
1018 if (output_bfd != NULL)
1019 relocatable = TRUE;
1020 else
1021 {
1022 relocatable = FALSE;
1023 output_bfd = symbol->section->output_section->owner;
1024 }
1025
1026 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
1027 error_message, &gp);
1028 if (ret != bfd_reloc_ok)
1029 return ret;
1030
1031 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1032 relocatable, data, gp);
1033 }
1034
1035 static bfd_reloc_status_type
1036 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1037 asection *input_section, bfd_boolean relocatable,
1038 void *data, bfd_vma gp)
1039 {
1040 bfd_vma relocation;
1041 bfd_vma val;
1042
1043 if (bfd_is_com_section (symbol->section))
1044 relocation = 0;
1045 else
1046 relocation = symbol->value;
1047
1048 relocation += symbol->section->output_section->vma;
1049 relocation += symbol->section->output_offset;
1050
1051 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1052 return bfd_reloc_outofrange;
1053
1054 /* Set val to the offset into the section or symbol. */
1055 val = reloc_entry->addend;
1056
1057 if (reloc_entry->howto->partial_inplace)
1058 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1059
1060 /* Adjust val for the final section location and GP value. If we
1061 are producing relocatable output, we don't want to do this for
1062 an external symbol. */
1063 if (! relocatable
1064 || (symbol->flags & BSF_SECTION_SYM) != 0)
1065 val += relocation - gp;
1066
1067 if (reloc_entry->howto->partial_inplace)
1068 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1069 else
1070 reloc_entry->addend = val;
1071
1072 if (relocatable)
1073 reloc_entry->address += input_section->output_offset;
1074
1075 return bfd_reloc_ok;
1076 }
1077
1078 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1079 generated when addresses are 64 bits. The upper 32 bits are a simple
1080 sign extension. */
1081
1082 static bfd_reloc_status_type
1083 mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
1084 asymbol *symbol ATTRIBUTE_UNUSED,
1085 void *data, asection *input_section,
1086 bfd *output_bfd, char **error_message)
1087 {
1088 bfd_reloc_status_type r;
1089 arelent reloc32;
1090 unsigned long val;
1091 bfd_size_type addr;
1092
1093 /* Do a normal 32 bit relocation on the lower 32 bits. */
1094 reloc32 = *reloc_entry;
1095 if (bfd_big_endian (abfd))
1096 reloc32.address += 4;
1097 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1098 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1099 output_bfd, error_message);
1100
1101 /* Sign extend into the upper 32 bits. */
1102 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1103 if ((val & 0x80000000) != 0)
1104 val = 0xffffffff;
1105 else
1106 val = 0;
1107 addr = reloc_entry->address;
1108 if (bfd_little_endian (abfd))
1109 addr += 4;
1110 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
1111
1112 return r;
1113 }
1114
1115 /* Handle a mips16 jump. */
1116
1117 static bfd_reloc_status_type
1118 mips16_jump_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
1119 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
1120 asection *input_section, bfd *output_bfd,
1121 char **error_message ATTRIBUTE_UNUSED)
1122 {
1123 if (output_bfd != NULL
1124 && (symbol->flags & BSF_SECTION_SYM) == 0
1125 && reloc_entry->addend == 0)
1126 {
1127 reloc_entry->address += input_section->output_offset;
1128 return bfd_reloc_ok;
1129 }
1130
1131 /* FIXME. */
1132 {
1133 static bfd_boolean warned;
1134
1135 if (! warned)
1136 (*_bfd_error_handler)
1137 (_("Linking mips16 objects into %s format is not supported"),
1138 bfd_get_target (input_section->output_section->owner));
1139 warned = TRUE;
1140 }
1141
1142 return bfd_reloc_undefined;
1143 }
1144
1145 /* Handle a mips16 GP relative reloc. */
1146
1147 static bfd_reloc_status_type
1148 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1149 void *data, asection *input_section, bfd *output_bfd,
1150 char **error_message)
1151 {
1152 bfd_boolean relocatable;
1153 bfd_reloc_status_type ret;
1154 bfd_byte *location;
1155 bfd_vma gp;
1156
1157 /* If we're relocating, and this is an external symbol, we don't want
1158 to change anything. */
1159 if (output_bfd != NULL
1160 && (symbol->flags & BSF_SECTION_SYM) == 0
1161 && (symbol->flags & BSF_LOCAL) != 0)
1162 {
1163 reloc_entry->address += input_section->output_offset;
1164 return bfd_reloc_ok;
1165 }
1166
1167 if (output_bfd != NULL)
1168 relocatable = TRUE;
1169 else
1170 {
1171 relocatable = FALSE;
1172 output_bfd = symbol->section->output_section->owner;
1173 }
1174
1175 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1176 &gp);
1177 if (ret != bfd_reloc_ok)
1178 return ret;
1179
1180 location = (bfd_byte *) data + reloc_entry->address;
1181 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1182 location);
1183 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1184 input_section, relocatable,
1185 data, gp);
1186 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1187 location);
1188
1189 return ret;
1190 }
1191
1192 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1193
1194 struct elf_reloc_map {
1195 bfd_reloc_code_real_type bfd_val;
1196 enum elf_mips_reloc_type elf_val;
1197 };
1198
1199 static const struct elf_reloc_map mips_reloc_map[] =
1200 {
1201 { BFD_RELOC_NONE, R_MIPS_NONE },
1202 { BFD_RELOC_16, R_MIPS_16 },
1203 { BFD_RELOC_32, R_MIPS_32 },
1204 /* There is no BFD reloc for R_MIPS_REL32. */
1205 { BFD_RELOC_64, R_MIPS_64 },
1206 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1207 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1208 { BFD_RELOC_LO16, R_MIPS_LO16 },
1209 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1210 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1211 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1212 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
1213 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1214 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1215 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1216 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1217 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1218 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1219 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1220 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1221 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1222 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
1223 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
1224 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
1225 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
1226 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
1227 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
1228 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
1229 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
1230 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
1231 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
1232 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
1233 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
1234 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
1235 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
1236 };
1237
1238 static const struct elf_reloc_map mips16_reloc_map[] =
1239 {
1240 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
1241 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
1242 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
1243 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
1244 };
1245
1246 /* Given a BFD reloc type, return a howto structure. */
1247
1248 static reloc_howto_type *
1249 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1250 {
1251 unsigned int i;
1252 reloc_howto_type *howto_table = elf_mips_howto_table_rel;
1253 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
1254
1255 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
1256 i++)
1257 {
1258 if (mips_reloc_map[i].bfd_val == code)
1259 return &howto_table[(int) mips_reloc_map[i].elf_val];
1260 }
1261
1262 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
1263 i++)
1264 {
1265 if (mips16_reloc_map[i].bfd_val == code)
1266 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
1267 }
1268
1269 switch (code)
1270 {
1271 default:
1272 bfd_set_error (bfd_error_bad_value);
1273 return NULL;
1274
1275 case BFD_RELOC_CTOR:
1276 /* We need to handle BFD_RELOC_CTOR specially.
1277 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
1278 size of addresses of the ABI. */
1279 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
1280 | E_MIPS_ABI_EABI64)) != 0)
1281 return &elf_mips_ctor64_howto;
1282 else
1283 return &howto_table[(int) R_MIPS_32];
1284
1285 case BFD_RELOC_VTABLE_INHERIT:
1286 return &elf_mips_gnu_vtinherit_howto;
1287 case BFD_RELOC_VTABLE_ENTRY:
1288 return &elf_mips_gnu_vtentry_howto;
1289 case BFD_RELOC_32_PCREL:
1290 return &elf_mips_gnu_pcrel32;
1291 }
1292 }
1293
1294 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
1295
1296 static reloc_howto_type *
1297 mips_elf32_rtype_to_howto (unsigned int r_type,
1298 bfd_boolean rela_p ATTRIBUTE_UNUSED)
1299 {
1300 switch (r_type)
1301 {
1302 case R_MIPS_GNU_VTINHERIT:
1303 return &elf_mips_gnu_vtinherit_howto;
1304 case R_MIPS_GNU_VTENTRY:
1305 return &elf_mips_gnu_vtentry_howto;
1306 case R_MIPS_GNU_REL16_S2:
1307 return &elf_mips_gnu_rel16_s2;
1308 case R_MIPS_PC32:
1309 return &elf_mips_gnu_pcrel32;
1310 default:
1311 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
1312 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
1313 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1314 return &elf_mips_howto_table_rel[r_type];
1315 }
1316 }
1317
1318 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
1319
1320 static void
1321 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
1322 {
1323 const struct elf_backend_data *bed;
1324 unsigned int r_type;
1325
1326 r_type = ELF32_R_TYPE (dst->r_info);
1327 bed = get_elf_backend_data (abfd);
1328 cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE);
1329
1330 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1331 value for the object file. We get the addend now, rather than
1332 when we do the relocation, because the symbol manipulations done
1333 by the linker may cause us to lose track of the input BFD. */
1334 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1335 && (r_type == (unsigned int) R_MIPS_GPREL16
1336 || r_type == (unsigned int) R_MIPS_LITERAL))
1337 cache_ptr->addend = elf_gp (abfd);
1338 }
1339
1340 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
1341
1342 static void
1343 mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
1344 {
1345 mips_info_to_howto_rel (abfd, cache_ptr, dst);
1346
1347 /* If we ever need to do any extra processing with dst->r_addend
1348 (the field omitted in an Elf_Internal_Rel) we can do it here. */
1349 }
1350 \f
1351 /* Determine whether a symbol is global for the purposes of splitting
1352 the symbol table into global symbols and local symbols. At least
1353 on Irix 5, this split must be between section symbols and all other
1354 symbols. On most ELF targets the split is between static symbols
1355 and externally visible symbols. */
1356
1357 static bfd_boolean
1358 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
1359 {
1360 if (SGI_COMPAT (abfd))
1361 return (sym->flags & BSF_SECTION_SYM) == 0;
1362 else
1363 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1364 || bfd_is_und_section (bfd_get_section (sym))
1365 || bfd_is_com_section (bfd_get_section (sym)));
1366 }
1367 \f
1368 /* Set the right machine number for a MIPS ELF file. */
1369
1370 static bfd_boolean
1371 mips_elf32_object_p (bfd *abfd)
1372 {
1373 unsigned long mach;
1374
1375 /* Irix 5 and 6 are broken. Object file symbol tables are not always
1376 sorted correctly such that local symbols precede global symbols,
1377 and the sh_info field in the symbol table is not always right. */
1378 if (SGI_COMPAT (abfd))
1379 elf_bad_symtab (abfd) = TRUE;
1380
1381 if (ABI_N32_P (abfd))
1382 return FALSE;
1383
1384 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
1385 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
1386
1387 return TRUE;
1388 }
1389 \f
1390 /* MIPS ELF local labels start with '$', not 'L'. */
1391
1392 static bfd_boolean
1393 mips_elf_is_local_label_name (bfd *abfd, const char *name)
1394 {
1395 if (name[0] == '$')
1396 return TRUE;
1397
1398 /* On Irix 6, the labels go back to starting with '.', so we accept
1399 the generic ELF local label syntax as well. */
1400 return _bfd_elf_is_local_label_name (abfd, name);
1401 }
1402 \f
1403 /* Support for core dump NOTE sections. */
1404 static bfd_boolean
1405 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1406 {
1407 int offset;
1408 unsigned int size;
1409
1410 switch (note->descsz)
1411 {
1412 default:
1413 return FALSE;
1414
1415 case 256: /* Linux/MIPS */
1416 /* pr_cursig */
1417 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1418
1419 /* pr_pid */
1420 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1421
1422 /* pr_reg */
1423 offset = 72;
1424 size = 180;
1425
1426 break;
1427 }
1428
1429 /* Make a ".reg/999" section. */
1430 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1431 size, note->descpos + offset);
1432 }
1433
1434 static bfd_boolean
1435 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1436 {
1437 switch (note->descsz)
1438 {
1439 default:
1440 return FALSE;
1441
1442 case 128: /* Linux/MIPS elf_prpsinfo */
1443 elf_tdata (abfd)->core_program
1444 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1445 elf_tdata (abfd)->core_command
1446 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1447 }
1448
1449 /* Note that for some reason, a spurious space is tacked
1450 onto the end of the args in some (at least one anyway)
1451 implementations, so strip it off if it exists. */
1452
1453 {
1454 char *command = elf_tdata (abfd)->core_command;
1455 int n = strlen (command);
1456
1457 if (0 < n && command[n - 1] == ' ')
1458 command[n - 1] = '\0';
1459 }
1460
1461 return TRUE;
1462 }
1463 \f
1464 /* Depending on the target vector we generate some version of Irix
1465 executables or "normal" MIPS ELF ABI executables. */
1466 static irix_compat_t
1467 elf32_mips_irix_compat (bfd *abfd)
1468 {
1469 if ((abfd->xvec == &bfd_elf32_bigmips_vec)
1470 || (abfd->xvec == &bfd_elf32_littlemips_vec))
1471 return ict_irix5;
1472 else
1473 return ict_none;
1474 }
1475 \f
1476 /* ECOFF swapping routines. These are used when dealing with the
1477 .mdebug section, which is in the ECOFF debugging format. */
1478 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
1479 /* Symbol table magic number. */
1480 magicSym,
1481 /* Alignment of debugging information. E.g., 4. */
1482 4,
1483 /* Sizes of external symbolic information. */
1484 sizeof (struct hdr_ext),
1485 sizeof (struct dnr_ext),
1486 sizeof (struct pdr_ext),
1487 sizeof (struct sym_ext),
1488 sizeof (struct opt_ext),
1489 sizeof (struct fdr_ext),
1490 sizeof (struct rfd_ext),
1491 sizeof (struct ext_ext),
1492 /* Functions to swap in external symbolic data. */
1493 ecoff_swap_hdr_in,
1494 ecoff_swap_dnr_in,
1495 ecoff_swap_pdr_in,
1496 ecoff_swap_sym_in,
1497 ecoff_swap_opt_in,
1498 ecoff_swap_fdr_in,
1499 ecoff_swap_rfd_in,
1500 ecoff_swap_ext_in,
1501 _bfd_ecoff_swap_tir_in,
1502 _bfd_ecoff_swap_rndx_in,
1503 /* Functions to swap out external symbolic data. */
1504 ecoff_swap_hdr_out,
1505 ecoff_swap_dnr_out,
1506 ecoff_swap_pdr_out,
1507 ecoff_swap_sym_out,
1508 ecoff_swap_opt_out,
1509 ecoff_swap_fdr_out,
1510 ecoff_swap_rfd_out,
1511 ecoff_swap_ext_out,
1512 _bfd_ecoff_swap_tir_out,
1513 _bfd_ecoff_swap_rndx_out,
1514 /* Function to read in symbolic data. */
1515 _bfd_mips_elf_read_ecoff_info
1516 };
1517 \f
1518 #define ELF_ARCH bfd_arch_mips
1519 #define ELF_MACHINE_CODE EM_MIPS
1520
1521 #define elf_backend_collect TRUE
1522 #define elf_backend_type_change_ok TRUE
1523 #define elf_backend_can_gc_sections TRUE
1524 #define elf_info_to_howto mips_info_to_howto_rela
1525 #define elf_info_to_howto_rel mips_info_to_howto_rel
1526 #define elf_backend_sym_is_global mips_elf_sym_is_global
1527 #define elf_backend_object_p mips_elf32_object_p
1528 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
1529 #define elf_backend_section_processing _bfd_mips_elf_section_processing
1530 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
1531 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
1532 #define elf_backend_section_from_bfd_section \
1533 _bfd_mips_elf_section_from_bfd_section
1534 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
1535 #define elf_backend_link_output_symbol_hook \
1536 _bfd_mips_elf_link_output_symbol_hook
1537 #define elf_backend_create_dynamic_sections \
1538 _bfd_mips_elf_create_dynamic_sections
1539 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
1540 #define elf_backend_adjust_dynamic_symbol \
1541 _bfd_mips_elf_adjust_dynamic_symbol
1542 #define elf_backend_always_size_sections \
1543 _bfd_mips_elf_always_size_sections
1544 #define elf_backend_size_dynamic_sections \
1545 _bfd_mips_elf_size_dynamic_sections
1546 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
1547 #define elf_backend_finish_dynamic_symbol \
1548 _bfd_mips_elf_finish_dynamic_symbol
1549 #define elf_backend_finish_dynamic_sections \
1550 _bfd_mips_elf_finish_dynamic_sections
1551 #define elf_backend_final_write_processing \
1552 _bfd_mips_elf_final_write_processing
1553 #define elf_backend_additional_program_headers \
1554 _bfd_mips_elf_additional_program_headers
1555 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
1556 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
1557 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
1558 #define elf_backend_copy_indirect_symbol \
1559 _bfd_mips_elf_copy_indirect_symbol
1560 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
1561 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
1562 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
1563 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
1564
1565 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
1566 #define elf_backend_may_use_rel_p 1
1567 #define elf_backend_may_use_rela_p 0
1568 #define elf_backend_default_use_rela_p 0
1569 #define elf_backend_sign_extend_vma TRUE
1570
1571 #define elf_backend_discard_info _bfd_mips_elf_discard_info
1572 #define elf_backend_ignore_discarded_relocs \
1573 _bfd_mips_elf_ignore_discarded_relocs
1574 #define elf_backend_mips_irix_compat elf32_mips_irix_compat
1575 #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
1576 #define bfd_elf32_bfd_is_local_label_name \
1577 mips_elf_is_local_label_name
1578 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
1579 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
1580 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
1581 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
1582 #define bfd_elf32_bfd_get_relocated_section_contents \
1583 _bfd_elf_mips_get_relocated_section_contents
1584 #define bfd_elf32_bfd_link_hash_table_create \
1585 _bfd_mips_elf_link_hash_table_create
1586 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
1587 #define bfd_elf32_bfd_merge_private_bfd_data \
1588 _bfd_mips_elf_merge_private_bfd_data
1589 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
1590 #define bfd_elf32_bfd_print_private_bfd_data \
1591 _bfd_mips_elf_print_private_bfd_data
1592
1593 /* Support for SGI-ish mips targets. */
1594 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
1595 #define TARGET_LITTLE_NAME "elf32-littlemips"
1596 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
1597 #define TARGET_BIG_NAME "elf32-bigmips"
1598
1599 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
1600 a value of 0x1000, and we are compatible. */
1601 #define ELF_MAXPAGESIZE 0x1000
1602 #define ELF_COMMONPAGESIZE 0x1000
1603
1604 #include "elf32-target.h"
1605
1606 /* Support for traditional mips targets. */
1607 #undef TARGET_LITTLE_SYM
1608 #undef TARGET_LITTLE_NAME
1609 #undef TARGET_BIG_SYM
1610 #undef TARGET_BIG_NAME
1611
1612 #undef ELF_MAXPAGESIZE
1613
1614 #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
1615 #define TARGET_LITTLE_NAME "elf32-tradlittlemips"
1616 #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
1617 #define TARGET_BIG_NAME "elf32-tradbigmips"
1618
1619 /* The SVR4 MIPS ABI says that this should be 0x10000, and Linux uses
1620 page sizes of up to that limit, so we need to respect it. */
1621 #define ELF_MAXPAGESIZE 0x10000
1622 #define elf32_bed elf32_tradbed
1623
1624 /* Include the target file again for this target. */
1625 #include "elf32-target.h"
1626
1627
1628 /* Specific to VxWorks. */
1629 static reloc_howto_type mips_vxworks_copy_howto_rela =
1630 HOWTO (R_MIPS_COPY, /* type */
1631 0, /* rightshift */
1632 2, /* size (0 = byte, 1 = short, 2 = long) */
1633 32, /* bitsize */
1634 FALSE, /* pc_relative */
1635 0, /* bitpos */
1636 complain_overflow_bitfield, /* complain_on_overflow */
1637 bfd_elf_generic_reloc, /* special_function */
1638 "R_MIPS_COPY", /* name */
1639 FALSE, /* partial_inplace */
1640 0x0, /* src_mask */
1641 0x0, /* dst_mask */
1642 FALSE); /* pcrel_offset */
1643
1644 /* Specific to VxWorks. */
1645 static reloc_howto_type mips_vxworks_jump_slot_howto_rela =
1646 HOWTO (R_MIPS_JUMP_SLOT, /* type */
1647 0, /* rightshift */
1648 2, /* size (0 = byte, 1 = short, 2 = long) */
1649 32, /* bitsize */
1650 FALSE, /* pc_relative */
1651 0, /* bitpos */
1652 complain_overflow_bitfield, /* complain_on_overflow */
1653 bfd_elf_generic_reloc, /* special_function */
1654 "R_MIPS_JUMP_SLOT", /* name */
1655 FALSE, /* partial_inplace */
1656 0x0, /* src_mask */
1657 0x0, /* dst_mask */
1658 FALSE); /* pcrel_offset */
1659
1660 /* Implement elf_backend_bfd_reloc_type_lookup for VxWorks. */
1661
1662 static reloc_howto_type *
1663 mips_vxworks_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1664 {
1665 switch (code)
1666 {
1667 case BFD_RELOC_MIPS_COPY:
1668 return &mips_vxworks_copy_howto_rela;
1669 case BFD_RELOC_MIPS_JUMP_SLOT:
1670 return &mips_vxworks_jump_slot_howto_rela;
1671 default:
1672 return bfd_elf32_bfd_reloc_type_lookup (abfd, code);
1673 }
1674 }
1675
1676 /* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */
1677
1678 static reloc_howto_type *
1679 mips_vxworks_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
1680 {
1681 switch (r_type)
1682 {
1683 case R_MIPS_COPY:
1684 return &mips_vxworks_copy_howto_rela;
1685 case R_MIPS_JUMP_SLOT:
1686 return &mips_vxworks_jump_slot_howto_rela;
1687 default:
1688 return mips_elf32_rtype_to_howto (r_type, rela_p);
1689 }
1690 }
1691
1692 /* Implement elf_backend_final_write_processing for VxWorks. */
1693
1694 static void
1695 mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
1696 {
1697 _bfd_mips_elf_final_write_processing (abfd, linker);
1698 elf_vxworks_final_write_processing (abfd, linker);
1699 }
1700
1701 #undef TARGET_LITTLE_SYM
1702 #undef TARGET_LITTLE_NAME
1703 #undef TARGET_BIG_SYM
1704 #undef TARGET_BIG_NAME
1705
1706 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec
1707 #define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
1708 #define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec
1709 #define TARGET_BIG_NAME "elf32-bigmips-vxworks"
1710
1711 #undef elf32_bed
1712 #define elf32_bed elf32_mips_vxworks_bed
1713
1714 #undef ELF_MAXPAGESIZE
1715 #define ELF_MAXPAGESIZE 0x1000
1716
1717 #undef elf_backend_want_got_plt
1718 #define elf_backend_want_got_plt 1
1719 #undef elf_backend_want_plt_sym
1720 #define elf_backend_want_plt_sym 1
1721 #undef elf_backend_got_symbol_offset
1722 #define elf_backend_got_symbol_offset 0
1723 #undef elf_backend_want_dynbss
1724 #define elf_backend_want_dynbss 1
1725 #undef elf_backend_may_use_rel_p
1726 #define elf_backend_may_use_rel_p 0
1727 #undef elf_backend_may_use_rela_p
1728 #define elf_backend_may_use_rela_p 1
1729 #undef elf_backend_default_use_rela_p
1730 #define elf_backend_default_use_rela_p 1
1731 #undef elf_backend_got_header_size
1732 #define elf_backend_got_header_size (4 * 3)
1733 #undef elf_backend_plt_readonly
1734 #define elf_backend_plt_readonly 1
1735
1736 #undef bfd_elf32_bfd_reloc_type_lookup
1737 #define bfd_elf32_bfd_reloc_type_lookup \
1738 mips_vxworks_bfd_reloc_type_lookup
1739 #undef elf_backend_mips_rtype_to_howto
1740 #define elf_backend_mips_rtype_to_howto \
1741 mips_vxworks_rtype_to_howto
1742 #undef elf_backend_adjust_dynamic_symbol
1743 #define elf_backend_adjust_dynamic_symbol \
1744 _bfd_mips_vxworks_adjust_dynamic_symbol
1745 #undef elf_backend_finish_dynamic_symbol
1746 #define elf_backend_finish_dynamic_symbol \
1747 _bfd_mips_vxworks_finish_dynamic_symbol
1748 #undef bfd_elf32_bfd_link_hash_table_create
1749 #define bfd_elf32_bfd_link_hash_table_create \
1750 _bfd_mips_vxworks_link_hash_table_create
1751 #undef elf_backend_add_symbol_hook
1752 #define elf_backend_add_symbol_hook \
1753 elf_vxworks_add_symbol_hook
1754 #undef elf_backend_link_output_symbol_hook
1755 #define elf_backend_link_output_symbol_hook \
1756 elf_vxworks_link_output_symbol_hook
1757 #undef elf_backend_emit_relocs
1758 #define elf_backend_emit_relocs \
1759 elf_vxworks_emit_relocs
1760 #undef elf_backend_final_write_processing
1761 #define elf_backend_final_write_processing \
1762 mips_vxworks_final_write_processing
1763
1764 #undef elf_backend_additional_program_headers
1765 #undef elf_backend_modify_segment_map
1766 #undef elf_backend_symbol_processing
1767 /* NOTE: elf_backend_rela_normal is not defined for MIPS. */
1768
1769 #include "elf32-target.h"
GDB Binutils - Deliverables
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