projects / deliverable / binutils-gdb.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
bfd/
[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, 2007 Free Software Foundation, Inc.
4
5 Most of the information added by Ian Lance Taylor, Cygnus Support,
6 <ian@cygnus.com>.
7 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
8 <mark@codesourcery.com>
9 Traditional MIPS targets support added by Koundinya.K, Dansk Data
10 Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
11
12 This file is part of BFD, the Binary File Descriptor library.
13
14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 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,
27 MA 02110-1301, USA. */
28
29
30 /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
31 different MIPS ELF from other targets. This matters when linking.
32 This file supports both, switching at runtime. */
33
34 #include "sysdep.h"
35 #include "bfd.h"
36 #include "libbfd.h"
37 #include "bfdlink.h"
38 #include "genlink.h"
39 #include "elf-bfd.h"
40 #include "elfxx-mips.h"
41 #include "elf/mips.h"
42 #include "elf-vxworks.h"
43
44 /* Get the ECOFF swapping routines. */
45 #include "coff/sym.h"
46 #include "coff/symconst.h"
47 #include "coff/internal.h"
48 #include "coff/ecoff.h"
49 #include "coff/mips.h"
50 #define ECOFF_SIGNED_32
51 #include "ecoffswap.h"
52
53 static bfd_reloc_status_type gprel32_with_gp
54 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
55 static bfd_reloc_status_type mips_elf_gprel32_reloc
56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
57 static bfd_reloc_status_type mips32_64bit_reloc
58 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
59 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
60 (bfd *, bfd_reloc_code_real_type);
61 static reloc_howto_type *mips_elf32_rtype_to_howto
62 (unsigned int, bfd_boolean);
63 static void mips_info_to_howto_rel
64 (bfd *, arelent *, Elf_Internal_Rela *);
65 static void mips_info_to_howto_rela
66 (bfd *, arelent *, Elf_Internal_Rela *);
67 static bfd_boolean mips_elf_sym_is_global
68 (bfd *, asymbol *);
69 static bfd_boolean mips_elf32_object_p
70 (bfd *);
71 static bfd_boolean mips_elf_is_local_label_name
72 (bfd *, const 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 /* 32 bit relocation with no addend. */
707 HOWTO (R_MIPS_GLOB_DAT, /* type */
708 0, /* rightshift */
709 2, /* size (0 = byte, 1 = short, 2 = long) */
710 32, /* bitsize */
711 FALSE, /* pc_relative */
712 0, /* bitpos */
713 complain_overflow_dont, /* complain_on_overflow */
714 _bfd_mips_elf_generic_reloc, /* special_function */
715 "R_MIPS_GLOB_DAT", /* name */
716 FALSE, /* partial_inplace */
717 0x0, /* src_mask */
718 0xffffffff, /* dst_mask */
719 FALSE), /* pcrel_offset */
720 };
721
722 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
723 is a hack to make the linker think that we need 64 bit values. */
724 static reloc_howto_type elf_mips_ctor64_howto =
725 HOWTO (R_MIPS_64, /* type */
726 0, /* rightshift */
727 4, /* size (0 = byte, 1 = short, 2 = long) */
728 32, /* bitsize */
729 FALSE, /* pc_relative */
730 0, /* bitpos */
731 complain_overflow_signed, /* complain_on_overflow */
732 mips32_64bit_reloc, /* special_function */
733 "R_MIPS_64", /* name */
734 TRUE, /* partial_inplace */
735 0xffffffff, /* src_mask */
736 0xffffffff, /* dst_mask */
737 FALSE); /* pcrel_offset */
738
739 static reloc_howto_type elf_mips16_howto_table_rel[] =
740 {
741 /* The reloc used for the mips16 jump instruction. */
742 HOWTO (R_MIPS16_26, /* type */
743 2, /* rightshift */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
745 26, /* bitsize */
746 FALSE, /* pc_relative */
747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
749 /* This needs complex overflow
750 detection, because the upper four
751 bits must match the PC. */
752 _bfd_mips_elf_generic_reloc, /* special_function */
753 "R_MIPS16_26", /* name */
754 TRUE, /* partial_inplace */
755 0x3ffffff, /* src_mask */
756 0x3ffffff, /* dst_mask */
757 FALSE), /* pcrel_offset */
758
759 /* The reloc used for the mips16 gprel instruction. */
760 HOWTO (R_MIPS16_GPREL, /* type */
761 0, /* rightshift */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
763 16, /* bitsize */
764 FALSE, /* pc_relative */
765 0, /* bitpos */
766 complain_overflow_signed, /* complain_on_overflow */
767 mips16_gprel_reloc, /* special_function */
768 "R_MIPS16_GPREL", /* name */
769 TRUE, /* partial_inplace */
770 0x0000ffff, /* src_mask */
771 0x0000ffff, /* dst_mask */
772 FALSE), /* pcrel_offset */
773
774 /* A MIPS16 reference to the global offset table. */
775 HOWTO (R_MIPS16_GOT16, /* type */
776 0, /* rightshift */
777 2, /* size (0 = byte, 1 = short, 2 = long) */
778 16, /* bitsize */
779 FALSE, /* pc_relative */
780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 _bfd_mips_elf_got16_reloc, /* special_function */
783 "R_MIPS16_GOT16", /* name */
784 TRUE, /* partial_inplace */
785 0x0000ffff, /* src_mask */
786 0x0000ffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
788
789 /* A MIPS16 call through the global offset table. */
790 HOWTO (R_MIPS16_CALL16, /* type */
791 0, /* rightshift */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 _bfd_mips_elf_generic_reloc, /* special_function */
798 "R_MIPS16_CALL16", /* name */
799 TRUE, /* partial_inplace */
800 0x0000ffff, /* src_mask */
801 0x0000ffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
803
804 /* MIPS16 high 16 bits of symbol value. */
805 HOWTO (R_MIPS16_HI16, /* type */
806 16, /* rightshift */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 _bfd_mips_elf_hi16_reloc, /* special_function */
813 "R_MIPS16_HI16", /* name */
814 TRUE, /* partial_inplace */
815 0x0000ffff, /* src_mask */
816 0x0000ffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
818
819 /* MIPS16 low 16 bits of symbol value. */
820 HOWTO (R_MIPS16_LO16, /* type */
821 0, /* rightshift */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
823 16, /* bitsize */
824 FALSE, /* pc_relative */
825 0, /* bitpos */
826 complain_overflow_dont, /* complain_on_overflow */
827 _bfd_mips_elf_lo16_reloc, /* special_function */
828 "R_MIPS16_LO16", /* name */
829 TRUE, /* partial_inplace */
830 0x0000ffff, /* src_mask */
831 0x0000ffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
833 };
834
835 /* 16 bit offset for pc-relative branches. */
836 static reloc_howto_type elf_mips_gnu_rel16_s2 =
837 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
838 2, /* rightshift */
839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 16, /* bitsize */
841 TRUE, /* pc_relative */
842 0, /* bitpos */
843 complain_overflow_signed, /* complain_on_overflow */
844 _bfd_mips_elf_generic_reloc, /* special_function */
845 "R_MIPS_GNU_REL16_S2", /* name */
846 TRUE, /* partial_inplace */
847 0xffff, /* src_mask */
848 0xffff, /* dst_mask */
849 TRUE); /* pcrel_offset */
850
851 /* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
852 It was co-opted by mips-linux for exception-handling data. It is no
853 longer used, but should continue to be supported by the linker for
854 backward compatibility. (GCC stopped using it in May, 2004.) */
855 static reloc_howto_type elf_mips_gnu_pcrel32 =
856 HOWTO (R_MIPS_PC32, /* type */
857 0, /* rightshift */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
859 32, /* bitsize */
860 TRUE, /* pc_relative */
861 0, /* bitpos */
862 complain_overflow_signed, /* complain_on_overflow */
863 _bfd_mips_elf_generic_reloc, /* special_function */
864 "R_MIPS_PC32", /* name */
865 TRUE, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 TRUE); /* pcrel_offset */
869
870 /* GNU extension to record C++ vtable hierarchy */
871 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
872 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
873 0, /* rightshift */
874 2, /* size (0 = byte, 1 = short, 2 = long) */
875 0, /* bitsize */
876 FALSE, /* pc_relative */
877 0, /* bitpos */
878 complain_overflow_dont, /* complain_on_overflow */
879 NULL, /* special_function */
880 "R_MIPS_GNU_VTINHERIT", /* name */
881 FALSE, /* partial_inplace */
882 0, /* src_mask */
883 0, /* dst_mask */
884 FALSE); /* pcrel_offset */
885
886 /* GNU extension to record C++ vtable member usage */
887 static reloc_howto_type elf_mips_gnu_vtentry_howto =
888 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
889 0, /* rightshift */
890 2, /* size (0 = byte, 1 = short, 2 = long) */
891 0, /* bitsize */
892 FALSE, /* pc_relative */
893 0, /* bitpos */
894 complain_overflow_dont, /* complain_on_overflow */
895 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
896 "R_MIPS_GNU_VTENTRY", /* name */
897 FALSE, /* partial_inplace */
898 0, /* src_mask */
899 0, /* dst_mask */
900 FALSE); /* pcrel_offset */
901
902 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
903 dangerous relocation. */
904
905 static bfd_boolean
906 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
907 {
908 unsigned int count;
909 asymbol **sym;
910 unsigned int i;
911
912 /* If we've already figured out what GP will be, just return it. */
913 *pgp = _bfd_get_gp_value (output_bfd);
914 if (*pgp)
915 return TRUE;
916
917 count = bfd_get_symcount (output_bfd);
918 sym = bfd_get_outsymbols (output_bfd);
919
920 /* The linker script will have created a symbol named `_gp' with the
921 appropriate value. */
922 if (sym == NULL)
923 i = count;
924 else
925 {
926 for (i = 0; i < count; i++, sym++)
927 {
928 register const char *name;
929
930 name = bfd_asymbol_name (*sym);
931 if (*name == '_' && strcmp (name, "_gp") == 0)
932 {
933 *pgp = bfd_asymbol_value (*sym);
934 _bfd_set_gp_value (output_bfd, *pgp);
935 break;
936 }
937 }
938 }
939
940 if (i >= count)
941 {
942 /* Only get the error once. */
943 *pgp = 4;
944 _bfd_set_gp_value (output_bfd, *pgp);
945 return FALSE;
946 }
947
948 return TRUE;
949 }
950
951 /* We have to figure out the gp value, so that we can adjust the
952 symbol value correctly. We look up the symbol _gp in the output
953 BFD. If we can't find it, we're stuck. We cache it in the ELF
954 target data. We don't need to adjust the symbol value for an
955 external symbol if we are producing relocatable output. */
956
957 static bfd_reloc_status_type
958 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
959 char **error_message, bfd_vma *pgp)
960 {
961 if (bfd_is_und_section (symbol->section)
962 && ! relocatable)
963 {
964 *pgp = 0;
965 return bfd_reloc_undefined;
966 }
967
968 *pgp = _bfd_get_gp_value (output_bfd);
969 if (*pgp == 0
970 && (! relocatable
971 || (symbol->flags & BSF_SECTION_SYM) != 0))
972 {
973 if (relocatable)
974 {
975 /* Make up a value. */
976 *pgp = symbol->section->output_section->vma + 0x4000;
977 _bfd_set_gp_value (output_bfd, *pgp);
978 }
979 else if (!mips_elf_assign_gp (output_bfd, pgp))
980 {
981 *error_message =
982 (char *) _("GP relative relocation when _gp not defined");
983 return bfd_reloc_dangerous;
984 }
985 }
986
987 return bfd_reloc_ok;
988 }
989
990 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
991 become the offset from the gp register. This function also handles
992 R_MIPS_LITERAL relocations, although those can be handled more
993 cleverly because the entries in the .lit8 and .lit4 sections can be
994 merged. */
995
996 bfd_reloc_status_type
997 _bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
998 asymbol *symbol, void *data,
999 asection *input_section, bfd *output_bfd,
1000 char **error_message)
1001 {
1002 bfd_boolean relocatable;
1003 bfd_reloc_status_type ret;
1004 bfd_vma gp;
1005
1006 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1007 if (reloc_entry->howto->type == R_MIPS_LITERAL
1008 && output_bfd != NULL
1009 && (symbol->flags & BSF_SECTION_SYM) == 0
1010 && (symbol->flags & BSF_LOCAL) != 0)
1011 {
1012 *error_message = (char *)
1013 _("literal relocation occurs for an external symbol");
1014 return bfd_reloc_outofrange;
1015 }
1016
1017 if (output_bfd != NULL)
1018 relocatable = TRUE;
1019 else
1020 {
1021 relocatable = FALSE;
1022 output_bfd = symbol->section->output_section->owner;
1023 }
1024
1025 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1026 &gp);
1027 if (ret != bfd_reloc_ok)
1028 return ret;
1029
1030 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1031 input_section, relocatable,
1032 data, gp);
1033 }
1034
1035 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1036 become the offset from the gp register. */
1037
1038 static bfd_reloc_status_type
1039 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1040 void *data, asection *input_section, bfd *output_bfd,
1041 char **error_message)
1042 {
1043 bfd_boolean relocatable;
1044 bfd_reloc_status_type ret;
1045 bfd_vma gp;
1046
1047 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1048 if (output_bfd != NULL
1049 && (symbol->flags & BSF_SECTION_SYM) == 0
1050 && (symbol->flags & BSF_LOCAL) != 0)
1051 {
1052 *error_message = (char *)
1053 _("32bits gp relative relocation occurs for an external symbol");
1054 return bfd_reloc_outofrange;
1055 }
1056
1057 if (output_bfd != NULL)
1058 relocatable = TRUE;
1059 else
1060 {
1061 relocatable = FALSE;
1062 output_bfd = symbol->section->output_section->owner;
1063 }
1064
1065 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
1066 error_message, &gp);
1067 if (ret != bfd_reloc_ok)
1068 return ret;
1069
1070 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1071 relocatable, data, gp);
1072 }
1073
1074 static bfd_reloc_status_type
1075 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1076 asection *input_section, bfd_boolean relocatable,
1077 void *data, bfd_vma gp)
1078 {
1079 bfd_vma relocation;
1080 bfd_vma val;
1081
1082 if (bfd_is_com_section (symbol->section))
1083 relocation = 0;
1084 else
1085 relocation = symbol->value;
1086
1087 relocation += symbol->section->output_section->vma;
1088 relocation += symbol->section->output_offset;
1089
1090 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1091 return bfd_reloc_outofrange;
1092
1093 /* Set val to the offset into the section or symbol. */
1094 val = reloc_entry->addend;
1095
1096 if (reloc_entry->howto->partial_inplace)
1097 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1098
1099 /* Adjust val for the final section location and GP value. If we
1100 are producing relocatable output, we don't want to do this for
1101 an external symbol. */
1102 if (! relocatable
1103 || (symbol->flags & BSF_SECTION_SYM) != 0)
1104 val += relocation - gp;
1105
1106 if (reloc_entry->howto->partial_inplace)
1107 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1108 else
1109 reloc_entry->addend = val;
1110
1111 if (relocatable)
1112 reloc_entry->address += input_section->output_offset;
1113
1114 return bfd_reloc_ok;
1115 }
1116
1117 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1118 generated when addresses are 64 bits. The upper 32 bits are a simple
1119 sign extension. */
1120
1121 static bfd_reloc_status_type
1122 mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
1123 asymbol *symbol ATTRIBUTE_UNUSED,
1124 void *data, asection *input_section,
1125 bfd *output_bfd, char **error_message)
1126 {
1127 bfd_reloc_status_type r;
1128 arelent reloc32;
1129 unsigned long val;
1130 bfd_size_type addr;
1131
1132 /* Do a normal 32 bit relocation on the lower 32 bits. */
1133 reloc32 = *reloc_entry;
1134 if (bfd_big_endian (abfd))
1135 reloc32.address += 4;
1136 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1137 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1138 output_bfd, error_message);
1139
1140 /* Sign extend into the upper 32 bits. */
1141 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1142 if ((val & 0x80000000) != 0)
1143 val = 0xffffffff;
1144 else
1145 val = 0;
1146 addr = reloc_entry->address;
1147 if (bfd_little_endian (abfd))
1148 addr += 4;
1149 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
1150
1151 return r;
1152 }
1153
1154 /* Handle a mips16 GP relative reloc. */
1155
1156 static bfd_reloc_status_type
1157 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1158 void *data, asection *input_section, bfd *output_bfd,
1159 char **error_message)
1160 {
1161 bfd_boolean relocatable;
1162 bfd_reloc_status_type ret;
1163 bfd_byte *location;
1164 bfd_vma gp;
1165
1166 /* If we're relocating, and this is an external symbol, we don't want
1167 to change anything. */
1168 if (output_bfd != NULL
1169 && (symbol->flags & BSF_SECTION_SYM) == 0
1170 && (symbol->flags & BSF_LOCAL) != 0)
1171 {
1172 reloc_entry->address += input_section->output_offset;
1173 return bfd_reloc_ok;
1174 }
1175
1176 if (output_bfd != NULL)
1177 relocatable = TRUE;
1178 else
1179 {
1180 relocatable = FALSE;
1181 output_bfd = symbol->section->output_section->owner;
1182 }
1183
1184 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1185 &gp);
1186 if (ret != bfd_reloc_ok)
1187 return ret;
1188
1189 location = (bfd_byte *) data + reloc_entry->address;
1190 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1191 location);
1192 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1193 input_section, relocatable,
1194 data, gp);
1195 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1196 location);
1197
1198 return ret;
1199 }
1200
1201 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1202
1203 struct elf_reloc_map {
1204 bfd_reloc_code_real_type bfd_val;
1205 enum elf_mips_reloc_type elf_val;
1206 };
1207
1208 static const struct elf_reloc_map mips_reloc_map[] =
1209 {
1210 { BFD_RELOC_NONE, R_MIPS_NONE },
1211 { BFD_RELOC_16, R_MIPS_16 },
1212 { BFD_RELOC_32, R_MIPS_32 },
1213 /* There is no BFD reloc for R_MIPS_REL32. */
1214 { BFD_RELOC_64, R_MIPS_64 },
1215 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1216 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1217 { BFD_RELOC_LO16, R_MIPS_LO16 },
1218 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1219 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1220 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1221 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
1222 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1223 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1224 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1225 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1226 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1227 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1228 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1229 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1230 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1231 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
1232 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
1233 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
1234 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
1235 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
1236 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
1237 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
1238 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
1239 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
1240 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
1241 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
1242 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
1243 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
1244 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
1245 };
1246
1247 static const struct elf_reloc_map mips16_reloc_map[] =
1248 {
1249 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
1250 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
1251 { BFD_RELOC_MIPS16_GOT16, R_MIPS16_GOT16 - R_MIPS16_min },
1252 { BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min },
1253 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
1254 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
1255 };
1256
1257 /* Given a BFD reloc type, return a howto structure. */
1258
1259 static reloc_howto_type *
1260 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1261 {
1262 unsigned int i;
1263 reloc_howto_type *howto_table = elf_mips_howto_table_rel;
1264 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
1265
1266 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
1267 i++)
1268 {
1269 if (mips_reloc_map[i].bfd_val == code)
1270 return &howto_table[(int) mips_reloc_map[i].elf_val];
1271 }
1272
1273 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
1274 i++)
1275 {
1276 if (mips16_reloc_map[i].bfd_val == code)
1277 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
1278 }
1279
1280 switch (code)
1281 {
1282 default:
1283 bfd_set_error (bfd_error_bad_value);
1284 return NULL;
1285
1286 case BFD_RELOC_CTOR:
1287 /* We need to handle BFD_RELOC_CTOR specially.
1288 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
1289 size of addresses of the ABI. */
1290 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
1291 | E_MIPS_ABI_EABI64)) != 0)
1292 return &elf_mips_ctor64_howto;
1293 else
1294 return &howto_table[(int) R_MIPS_32];
1295
1296 case BFD_RELOC_VTABLE_INHERIT:
1297 return &elf_mips_gnu_vtinherit_howto;
1298 case BFD_RELOC_VTABLE_ENTRY:
1299 return &elf_mips_gnu_vtentry_howto;
1300 case BFD_RELOC_32_PCREL:
1301 return &elf_mips_gnu_pcrel32;
1302 }
1303 }
1304
1305 static reloc_howto_type *
1306 bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1307 const char *r_name)
1308 {
1309 unsigned int i;
1310
1311 for (i = 0;
1312 i < (sizeof (elf_mips_howto_table_rel)
1313 / sizeof (elf_mips_howto_table_rel[0]));
1314 i++)
1315 if (elf_mips_howto_table_rel[i].name != NULL
1316 && strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0)
1317 return &elf_mips_howto_table_rel[i];
1318
1319 for (i = 0;
1320 i < (sizeof (elf_mips16_howto_table_rel)
1321 / sizeof (elf_mips16_howto_table_rel[0]));
1322 i++)
1323 if (elf_mips16_howto_table_rel[i].name != NULL
1324 && strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0)
1325 return &elf_mips16_howto_table_rel[i];
1326
1327 if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0)
1328 return &elf_mips_gnu_pcrel32;
1329 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
1330 return &elf_mips_gnu_rel16_s2;
1331 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
1332 return &elf_mips_gnu_vtinherit_howto;
1333 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
1334 return &elf_mips_gnu_vtentry_howto;
1335
1336 return NULL;
1337 }
1338
1339 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
1340
1341 static reloc_howto_type *
1342 mips_elf32_rtype_to_howto (unsigned int r_type,
1343 bfd_boolean rela_p ATTRIBUTE_UNUSED)
1344 {
1345 switch (r_type)
1346 {
1347 case R_MIPS_GNU_VTINHERIT:
1348 return &elf_mips_gnu_vtinherit_howto;
1349 case R_MIPS_GNU_VTENTRY:
1350 return &elf_mips_gnu_vtentry_howto;
1351 case R_MIPS_GNU_REL16_S2:
1352 return &elf_mips_gnu_rel16_s2;
1353 case R_MIPS_PC32:
1354 return &elf_mips_gnu_pcrel32;
1355 default:
1356 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
1357 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
1358 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1359 return &elf_mips_howto_table_rel[r_type];
1360 }
1361 }
1362
1363 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
1364
1365 static void
1366 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
1367 {
1368 const struct elf_backend_data *bed;
1369 unsigned int r_type;
1370
1371 r_type = ELF32_R_TYPE (dst->r_info);
1372 bed = get_elf_backend_data (abfd);
1373 cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE);
1374
1375 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1376 value for the object file. We get the addend now, rather than
1377 when we do the relocation, because the symbol manipulations done
1378 by the linker may cause us to lose track of the input BFD. */
1379 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1380 && (r_type == (unsigned int) R_MIPS_GPREL16
1381 || r_type == (unsigned int) R_MIPS_LITERAL))
1382 cache_ptr->addend = elf_gp (abfd);
1383 }
1384
1385 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
1386
1387 static void
1388 mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
1389 {
1390 mips_info_to_howto_rel (abfd, cache_ptr, dst);
1391
1392 /* If we ever need to do any extra processing with dst->r_addend
1393 (the field omitted in an Elf_Internal_Rel) we can do it here. */
1394 }
1395 \f
1396 /* Determine whether a symbol is global for the purposes of splitting
1397 the symbol table into global symbols and local symbols. At least
1398 on Irix 5, this split must be between section symbols and all other
1399 symbols. On most ELF targets the split is between static symbols
1400 and externally visible symbols. */
1401
1402 static bfd_boolean
1403 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
1404 {
1405 if (SGI_COMPAT (abfd))
1406 return (sym->flags & BSF_SECTION_SYM) == 0;
1407 else
1408 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1409 || bfd_is_und_section (bfd_get_section (sym))
1410 || bfd_is_com_section (bfd_get_section (sym)));
1411 }
1412 \f
1413 /* Set the right machine number for a MIPS ELF file. */
1414
1415 static bfd_boolean
1416 mips_elf32_object_p (bfd *abfd)
1417 {
1418 unsigned long mach;
1419
1420 /* Irix 5 and 6 are broken. Object file symbol tables are not always
1421 sorted correctly such that local symbols precede global symbols,
1422 and the sh_info field in the symbol table is not always right. */
1423 if (SGI_COMPAT (abfd))
1424 elf_bad_symtab (abfd) = TRUE;
1425
1426 if (ABI_N32_P (abfd))
1427 return FALSE;
1428
1429 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
1430 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
1431
1432 return TRUE;
1433 }
1434 \f
1435 /* MIPS ELF local labels start with '$', not 'L'. */
1436
1437 static bfd_boolean
1438 mips_elf_is_local_label_name (bfd *abfd, const char *name)
1439 {
1440 if (name[0] == '$')
1441 return TRUE;
1442
1443 /* On Irix 6, the labels go back to starting with '.', so we accept
1444 the generic ELF local label syntax as well. */
1445 return _bfd_elf_is_local_label_name (abfd, name);
1446 }
1447 \f
1448 /* Support for core dump NOTE sections. */
1449 static bfd_boolean
1450 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1451 {
1452 int offset;
1453 unsigned int size;
1454
1455 switch (note->descsz)
1456 {
1457 default:
1458 return FALSE;
1459
1460 case 256: /* Linux/MIPS */
1461 /* pr_cursig */
1462 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1463
1464 /* pr_pid */
1465 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1466
1467 /* pr_reg */
1468 offset = 72;
1469 size = 180;
1470
1471 break;
1472 }
1473
1474 /* Make a ".reg/999" section. */
1475 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1476 size, note->descpos + offset);
1477 }
1478
1479 static bfd_boolean
1480 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1481 {
1482 switch (note->descsz)
1483 {
1484 default:
1485 return FALSE;
1486
1487 case 128: /* Linux/MIPS elf_prpsinfo */
1488 elf_tdata (abfd)->core_program
1489 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1490 elf_tdata (abfd)->core_command
1491 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1492 }
1493
1494 /* Note that for some reason, a spurious space is tacked
1495 onto the end of the args in some (at least one anyway)
1496 implementations, so strip it off if it exists. */
1497
1498 {
1499 char *command = elf_tdata (abfd)->core_command;
1500 int n = strlen (command);
1501
1502 if (0 < n && command[n - 1] == ' ')
1503 command[n - 1] = '\0';
1504 }
1505
1506 return TRUE;
1507 }
1508 \f
1509 /* Depending on the target vector we generate some version of Irix
1510 executables or "normal" MIPS ELF ABI executables. */
1511 static irix_compat_t
1512 elf32_mips_irix_compat (bfd *abfd)
1513 {
1514 if ((abfd->xvec == &bfd_elf32_bigmips_vec)
1515 || (abfd->xvec == &bfd_elf32_littlemips_vec))
1516 return ict_irix5;
1517 else
1518 return ict_none;
1519 }
1520 \f
1521 /* ECOFF swapping routines. These are used when dealing with the
1522 .mdebug section, which is in the ECOFF debugging format. */
1523 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
1524 /* Symbol table magic number. */
1525 magicSym,
1526 /* Alignment of debugging information. E.g., 4. */
1527 4,
1528 /* Sizes of external symbolic information. */
1529 sizeof (struct hdr_ext),
1530 sizeof (struct dnr_ext),
1531 sizeof (struct pdr_ext),
1532 sizeof (struct sym_ext),
1533 sizeof (struct opt_ext),
1534 sizeof (struct fdr_ext),
1535 sizeof (struct rfd_ext),
1536 sizeof (struct ext_ext),
1537 /* Functions to swap in external symbolic data. */
1538 ecoff_swap_hdr_in,
1539 ecoff_swap_dnr_in,
1540 ecoff_swap_pdr_in,
1541 ecoff_swap_sym_in,
1542 ecoff_swap_opt_in,
1543 ecoff_swap_fdr_in,
1544 ecoff_swap_rfd_in,
1545 ecoff_swap_ext_in,
1546 _bfd_ecoff_swap_tir_in,
1547 _bfd_ecoff_swap_rndx_in,
1548 /* Functions to swap out external symbolic data. */
1549 ecoff_swap_hdr_out,
1550 ecoff_swap_dnr_out,
1551 ecoff_swap_pdr_out,
1552 ecoff_swap_sym_out,
1553 ecoff_swap_opt_out,
1554 ecoff_swap_fdr_out,
1555 ecoff_swap_rfd_out,
1556 ecoff_swap_ext_out,
1557 _bfd_ecoff_swap_tir_out,
1558 _bfd_ecoff_swap_rndx_out,
1559 /* Function to read in symbolic data. */
1560 _bfd_mips_elf_read_ecoff_info
1561 };
1562 \f
1563 #define ELF_ARCH bfd_arch_mips
1564 #define ELF_MACHINE_CODE EM_MIPS
1565
1566 #define elf_backend_collect TRUE
1567 #define elf_backend_type_change_ok TRUE
1568 #define elf_backend_can_gc_sections TRUE
1569 #define elf_info_to_howto mips_info_to_howto_rela
1570 #define elf_info_to_howto_rel mips_info_to_howto_rel
1571 #define elf_backend_sym_is_global mips_elf_sym_is_global
1572 #define elf_backend_object_p mips_elf32_object_p
1573 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
1574 #define elf_backend_section_processing _bfd_mips_elf_section_processing
1575 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
1576 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
1577 #define elf_backend_section_from_bfd_section \
1578 _bfd_mips_elf_section_from_bfd_section
1579 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
1580 #define elf_backend_link_output_symbol_hook \
1581 _bfd_mips_elf_link_output_symbol_hook
1582 #define elf_backend_create_dynamic_sections \
1583 _bfd_mips_elf_create_dynamic_sections
1584 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
1585 #define elf_backend_merge_symbol_attribute \
1586 _bfd_mips_elf_merge_symbol_attribute
1587 #define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag
1588 #define elf_backend_adjust_dynamic_symbol \
1589 _bfd_mips_elf_adjust_dynamic_symbol
1590 #define elf_backend_always_size_sections \
1591 _bfd_mips_elf_always_size_sections
1592 #define elf_backend_size_dynamic_sections \
1593 _bfd_mips_elf_size_dynamic_sections
1594 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
1595 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
1596 #define elf_backend_finish_dynamic_symbol \
1597 _bfd_mips_elf_finish_dynamic_symbol
1598 #define elf_backend_finish_dynamic_sections \
1599 _bfd_mips_elf_finish_dynamic_sections
1600 #define elf_backend_final_write_processing \
1601 _bfd_mips_elf_final_write_processing
1602 #define elf_backend_additional_program_headers \
1603 _bfd_mips_elf_additional_program_headers
1604 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
1605 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
1606 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
1607 #define elf_backend_copy_indirect_symbol \
1608 _bfd_mips_elf_copy_indirect_symbol
1609 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
1610 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
1611 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
1612 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
1613
1614 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
1615 #define elf_backend_may_use_rel_p 1
1616 #define elf_backend_may_use_rela_p 0
1617 #define elf_backend_default_use_rela_p 0
1618 #define elf_backend_sign_extend_vma TRUE
1619
1620 #define elf_backend_discard_info _bfd_mips_elf_discard_info
1621 #define elf_backend_ignore_discarded_relocs \
1622 _bfd_mips_elf_ignore_discarded_relocs
1623 #define elf_backend_write_section _bfd_mips_elf_write_section
1624 #define elf_backend_mips_irix_compat elf32_mips_irix_compat
1625 #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
1626 #define bfd_elf32_bfd_is_local_label_name \
1627 mips_elf_is_local_label_name
1628 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
1629 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
1630 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
1631 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
1632 #define bfd_elf32_bfd_get_relocated_section_contents \
1633 _bfd_elf_mips_get_relocated_section_contents
1634 #define bfd_elf32_bfd_link_hash_table_create \
1635 _bfd_mips_elf_link_hash_table_create
1636 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
1637 #define bfd_elf32_bfd_merge_private_bfd_data \
1638 _bfd_mips_elf_merge_private_bfd_data
1639 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
1640 #define bfd_elf32_bfd_print_private_bfd_data \
1641 _bfd_mips_elf_print_private_bfd_data
1642
1643 /* Support for SGI-ish mips targets. */
1644 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
1645 #define TARGET_LITTLE_NAME "elf32-littlemips"
1646 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
1647 #define TARGET_BIG_NAME "elf32-bigmips"
1648
1649 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
1650 a value of 0x1000, and we are compatible. */
1651 #define ELF_MAXPAGESIZE 0x1000
1652 #define ELF_COMMONPAGESIZE 0x1000
1653
1654 #include "elf32-target.h"
1655
1656 /* Support for traditional mips targets. */
1657 #undef TARGET_LITTLE_SYM
1658 #undef TARGET_LITTLE_NAME
1659 #undef TARGET_BIG_SYM
1660 #undef TARGET_BIG_NAME
1661
1662 #undef ELF_MAXPAGESIZE
1663 #undef ELF_COMMONPAGESIZE
1664
1665 #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
1666 #define TARGET_LITTLE_NAME "elf32-tradlittlemips"
1667 #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
1668 #define TARGET_BIG_NAME "elf32-tradbigmips"
1669
1670 /* The MIPS ABI says at Page 5-1:
1671 Virtual addresses and file offsets for MIPS segments are congruent
1672 modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
1673 is the maximum page size, the files are suitable for paging
1674 regardless of physical page size. */
1675 #define ELF_MAXPAGESIZE 0x10000
1676 #define ELF_COMMONPAGESIZE 0x1000
1677 #define elf32_bed elf32_tradbed
1678
1679 /* Include the target file again for this target. */
1680 #include "elf32-target.h"
1681
1682
1683 /* Specific to VxWorks. */
1684 static reloc_howto_type mips_vxworks_copy_howto_rela =
1685 HOWTO (R_MIPS_COPY, /* type */
1686 0, /* rightshift */
1687 2, /* size (0 = byte, 1 = short, 2 = long) */
1688 32, /* bitsize */
1689 FALSE, /* pc_relative */
1690 0, /* bitpos */
1691 complain_overflow_bitfield, /* complain_on_overflow */
1692 bfd_elf_generic_reloc, /* special_function */
1693 "R_MIPS_COPY", /* name */
1694 FALSE, /* partial_inplace */
1695 0x0, /* src_mask */
1696 0x0, /* dst_mask */
1697 FALSE); /* pcrel_offset */
1698
1699 /* Specific to VxWorks. */
1700 static reloc_howto_type mips_vxworks_jump_slot_howto_rela =
1701 HOWTO (R_MIPS_JUMP_SLOT, /* type */
1702 0, /* rightshift */
1703 2, /* size (0 = byte, 1 = short, 2 = long) */
1704 32, /* bitsize */
1705 FALSE, /* pc_relative */
1706 0, /* bitpos */
1707 complain_overflow_bitfield, /* complain_on_overflow */
1708 bfd_elf_generic_reloc, /* special_function */
1709 "R_MIPS_JUMP_SLOT", /* name */
1710 FALSE, /* partial_inplace */
1711 0x0, /* src_mask */
1712 0x0, /* dst_mask */
1713 FALSE); /* pcrel_offset */
1714
1715 /* Implement elf_backend_bfd_reloc_type_lookup for VxWorks. */
1716
1717 static reloc_howto_type *
1718 mips_vxworks_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1719 {
1720 switch (code)
1721 {
1722 case BFD_RELOC_MIPS_COPY:
1723 return &mips_vxworks_copy_howto_rela;
1724 case BFD_RELOC_MIPS_JUMP_SLOT:
1725 return &mips_vxworks_jump_slot_howto_rela;
1726 default:
1727 return bfd_elf32_bfd_reloc_type_lookup (abfd, code);
1728 }
1729 }
1730
1731 static reloc_howto_type *
1732 mips_vxworks_bfd_reloc_name_lookup (bfd *abfd, const char *r_name)
1733 {
1734 if (strcasecmp (mips_vxworks_copy_howto_rela.name, r_name) == 0)
1735 return &mips_vxworks_copy_howto_rela;
1736 if (strcasecmp (mips_vxworks_jump_slot_howto_rela.name, r_name) == 0)
1737 return &mips_vxworks_jump_slot_howto_rela;
1738
1739 return bfd_elf32_bfd_reloc_name_lookup (abfd, r_name);
1740 }
1741
1742 /* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */
1743
1744 static reloc_howto_type *
1745 mips_vxworks_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
1746 {
1747 switch (r_type)
1748 {
1749 case R_MIPS_COPY:
1750 return &mips_vxworks_copy_howto_rela;
1751 case R_MIPS_JUMP_SLOT:
1752 return &mips_vxworks_jump_slot_howto_rela;
1753 default:
1754 return mips_elf32_rtype_to_howto (r_type, rela_p);
1755 }
1756 }
1757
1758 /* Implement elf_backend_final_write_processing for VxWorks. */
1759
1760 static void
1761 mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
1762 {
1763 _bfd_mips_elf_final_write_processing (abfd, linker);
1764 elf_vxworks_final_write_processing (abfd, linker);
1765 }
1766
1767 #undef TARGET_LITTLE_SYM
1768 #undef TARGET_LITTLE_NAME
1769 #undef TARGET_BIG_SYM
1770 #undef TARGET_BIG_NAME
1771
1772 #undef ELF_MAXPAGESIZE
1773 #undef ELF_COMMONPAGESIZE
1774
1775 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec
1776 #define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
1777 #define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec
1778 #define TARGET_BIG_NAME "elf32-bigmips-vxworks"
1779
1780 #undef elf32_bed
1781 #define elf32_bed elf32_mips_vxworks_bed
1782
1783 #define ELF_MAXPAGESIZE 0x1000
1784 #define ELF_COMMONPAGESIZE 0x1000
1785
1786 #undef elf_backend_want_got_plt
1787 #define elf_backend_want_got_plt 1
1788 #undef elf_backend_want_plt_sym
1789 #define elf_backend_want_plt_sym 1
1790 #undef elf_backend_got_symbol_offset
1791 #define elf_backend_got_symbol_offset 0
1792 #undef elf_backend_want_dynbss
1793 #define elf_backend_want_dynbss 1
1794 #undef elf_backend_may_use_rel_p
1795 #define elf_backend_may_use_rel_p 0
1796 #undef elf_backend_may_use_rela_p
1797 #define elf_backend_may_use_rela_p 1
1798 #undef elf_backend_default_use_rela_p
1799 #define elf_backend_default_use_rela_p 1
1800 #undef elf_backend_got_header_size
1801 #define elf_backend_got_header_size (4 * 3)
1802 #undef elf_backend_plt_readonly
1803 #define elf_backend_plt_readonly 1
1804
1805 #undef bfd_elf32_bfd_reloc_type_lookup
1806 #define bfd_elf32_bfd_reloc_type_lookup \
1807 mips_vxworks_bfd_reloc_type_lookup
1808 #undef bfd_elf32_bfd_reloc_name_lookup
1809 #define bfd_elf32_bfd_reloc_name_lookup \
1810 mips_vxworks_bfd_reloc_name_lookup
1811 #undef elf_backend_mips_rtype_to_howto
1812 #define elf_backend_mips_rtype_to_howto \
1813 mips_vxworks_rtype_to_howto
1814 #undef elf_backend_adjust_dynamic_symbol
1815 #define elf_backend_adjust_dynamic_symbol \
1816 _bfd_mips_vxworks_adjust_dynamic_symbol
1817 #undef elf_backend_finish_dynamic_symbol
1818 #define elf_backend_finish_dynamic_symbol \
1819 _bfd_mips_vxworks_finish_dynamic_symbol
1820 #undef bfd_elf32_bfd_link_hash_table_create
1821 #define bfd_elf32_bfd_link_hash_table_create \
1822 _bfd_mips_vxworks_link_hash_table_create
1823 #undef elf_backend_add_symbol_hook
1824 #define elf_backend_add_symbol_hook \
1825 elf_vxworks_add_symbol_hook
1826 #undef elf_backend_link_output_symbol_hook
1827 #define elf_backend_link_output_symbol_hook \
1828 elf_vxworks_link_output_symbol_hook
1829 #undef elf_backend_emit_relocs
1830 #define elf_backend_emit_relocs \
1831 elf_vxworks_emit_relocs
1832 #undef elf_backend_final_write_processing
1833 #define elf_backend_final_write_processing \
1834 mips_vxworks_final_write_processing
1835
1836 #undef elf_backend_additional_program_headers
1837 #undef elf_backend_modify_segment_map
1838 #undef elf_backend_symbol_processing
1839 /* NOTE: elf_backend_rela_normal is not defined for MIPS. */
1840
1841 #include "elf32-target.h"
GDB Binutils - Deliverables
This page took 0.068558 seconds and 5 git commands to generate.