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[deliverable/binutils-gdb.git] / bfd / elfn32-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
41 /* Get the ECOFF swapping routines. */
42 #include "coff/sym.h"
43 #include "coff/symconst.h"
44 #include "coff/internal.h"
45 #include "coff/ecoff.h"
46 #include "coff/mips.h"
47 #define ECOFF_SIGNED_32
48 #include "ecoffswap.h"
49
50 static bfd_boolean mips_elf_assign_gp
51 (bfd *, bfd_vma *);
52 static bfd_reloc_status_type mips_elf_final_gp
53 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
54 static bfd_reloc_status_type mips_elf_gprel16_reloc
55 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
56 static bfd_reloc_status_type mips_elf_literal_reloc
57 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
58 static bfd_reloc_status_type mips_elf_gprel32_reloc
59 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
60 static bfd_reloc_status_type gprel32_with_gp
61 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
62 static bfd_reloc_status_type mips_elf_shift6_reloc
63 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
64 static bfd_reloc_status_type mips16_jump_reloc
65 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
66 static bfd_reloc_status_type mips16_gprel_reloc
67 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
68 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
69 (bfd *, bfd_reloc_code_real_type);
70 static reloc_howto_type *mips_elf_n32_rtype_to_howto
71 (unsigned int, bfd_boolean);
72 static void mips_info_to_howto_rel
73 (bfd *, arelent *, Elf_Internal_Rela *);
74 static void mips_info_to_howto_rela
75 (bfd *, arelent *, Elf_Internal_Rela *);
76 static bfd_boolean mips_elf_sym_is_global
77 (bfd *, asymbol *);
78 static bfd_boolean mips_elf_n32_object_p
79 (bfd *);
80 static bfd_boolean elf32_mips_grok_prstatus
81 (bfd *, Elf_Internal_Note *);
82 static bfd_boolean elf32_mips_grok_psinfo
83 (bfd *, Elf_Internal_Note *);
84 static irix_compat_t elf_n32_mips_irix_compat
85 (bfd *);
86
87 extern const bfd_target bfd_elf32_nbigmips_vec;
88 extern const bfd_target bfd_elf32_nlittlemips_vec;
89
90 /* Nonzero if ABFD is using the N32 ABI. */
91 #define ABI_N32_P(abfd) \
92 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
93
94 /* Whether we are trying to be compatible with IRIX at all. */
95 #define SGI_COMPAT(abfd) \
96 (elf_n32_mips_irix_compat (abfd) != ict_none)
97
98 /* The number of local .got entries we reserve. */
99 #define MIPS_RESERVED_GOTNO (2)
100
101 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
102 from smaller values. Start with zero, widen, *then* decrement. */
103 #define MINUS_ONE (((bfd_vma)0) - 1)
104
105 /* The relocation table used for SHT_REL sections. */
106
107 static reloc_howto_type elf_mips_howto_table_rel[] =
108 {
109 /* No relocation. */
110 HOWTO (R_MIPS_NONE, /* type */
111 0, /* rightshift */
112 0, /* size (0 = byte, 1 = short, 2 = long) */
113 0, /* bitsize */
114 FALSE, /* pc_relative */
115 0, /* bitpos */
116 complain_overflow_dont, /* complain_on_overflow */
117 _bfd_mips_elf_generic_reloc, /* special_function */
118 "R_MIPS_NONE", /* name */
119 FALSE, /* partial_inplace */
120 0, /* src_mask */
121 0, /* dst_mask */
122 FALSE), /* pcrel_offset */
123
124 /* 16 bit relocation. */
125 HOWTO (R_MIPS_16, /* type */
126 0, /* rightshift */
127 2, /* size (0 = byte, 1 = short, 2 = long) */
128 16, /* bitsize */
129 FALSE, /* pc_relative */
130 0, /* bitpos */
131 complain_overflow_signed, /* complain_on_overflow */
132 _bfd_mips_elf_generic_reloc, /* special_function */
133 "R_MIPS_16", /* name */
134 TRUE, /* partial_inplace */
135 0x0000ffff, /* src_mask */
136 0x0000ffff, /* dst_mask */
137 FALSE), /* pcrel_offset */
138
139 /* 32 bit relocation. */
140 HOWTO (R_MIPS_32, /* type */
141 0, /* rightshift */
142 2, /* size (0 = byte, 1 = short, 2 = long) */
143 32, /* bitsize */
144 FALSE, /* pc_relative */
145 0, /* bitpos */
146 complain_overflow_dont, /* complain_on_overflow */
147 _bfd_mips_elf_generic_reloc, /* special_function */
148 "R_MIPS_32", /* name */
149 TRUE, /* partial_inplace */
150 0xffffffff, /* src_mask */
151 0xffffffff, /* dst_mask */
152 FALSE), /* pcrel_offset */
153
154 /* 32 bit symbol relative relocation. */
155 HOWTO (R_MIPS_REL32, /* type */
156 0, /* rightshift */
157 2, /* size (0 = byte, 1 = short, 2 = long) */
158 32, /* bitsize */
159 FALSE, /* pc_relative */
160 0, /* bitpos */
161 complain_overflow_dont, /* complain_on_overflow */
162 _bfd_mips_elf_generic_reloc, /* special_function */
163 "R_MIPS_REL32", /* name */
164 TRUE, /* partial_inplace */
165 0xffffffff, /* src_mask */
166 0xffffffff, /* dst_mask */
167 FALSE), /* pcrel_offset */
168
169 /* 26 bit jump address. */
170 HOWTO (R_MIPS_26, /* type */
171 2, /* rightshift */
172 2, /* size (0 = byte, 1 = short, 2 = long) */
173 26, /* bitsize */
174 FALSE, /* pc_relative */
175 0, /* bitpos */
176 complain_overflow_dont, /* complain_on_overflow */
177 /* This needs complex overflow
178 detection, because the upper four
179 bits must match the PC + 4. */
180 _bfd_mips_elf_generic_reloc, /* special_function */
181 "R_MIPS_26", /* name */
182 TRUE, /* partial_inplace */
183 0x03ffffff, /* src_mask */
184 0x03ffffff, /* dst_mask */
185 FALSE), /* pcrel_offset */
186
187 /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for NewABI REL.
188 However, the native IRIX6 tools use them, so we try our best. */
189
190 /* High 16 bits of symbol value. */
191 HOWTO (R_MIPS_HI16, /* type */
192 16, /* rightshift */
193 2, /* size (0 = byte, 1 = short, 2 = long) */
194 16, /* bitsize */
195 FALSE, /* pc_relative */
196 0, /* bitpos */
197 complain_overflow_dont, /* complain_on_overflow */
198 _bfd_mips_elf_hi16_reloc, /* special_function */
199 "R_MIPS_HI16", /* name */
200 TRUE, /* partial_inplace */
201 0x0000ffff, /* src_mask */
202 0x0000ffff, /* dst_mask */
203 FALSE), /* pcrel_offset */
204
205 /* Low 16 bits of symbol value. */
206 HOWTO (R_MIPS_LO16, /* type */
207 0, /* rightshift */
208 2, /* size (0 = byte, 1 = short, 2 = long) */
209 16, /* bitsize */
210 FALSE, /* pc_relative */
211 0, /* bitpos */
212 complain_overflow_dont, /* complain_on_overflow */
213 _bfd_mips_elf_lo16_reloc, /* special_function */
214 "R_MIPS_LO16", /* name */
215 TRUE, /* partial_inplace */
216 0x0000ffff, /* src_mask */
217 0x0000ffff, /* dst_mask */
218 FALSE), /* pcrel_offset */
219
220 /* GP relative reference. */
221 HOWTO (R_MIPS_GPREL16, /* type */
222 0, /* rightshift */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
224 16, /* bitsize */
225 FALSE, /* pc_relative */
226 0, /* bitpos */
227 complain_overflow_signed, /* complain_on_overflow */
228 mips_elf_gprel16_reloc, /* special_function */
229 "R_MIPS_GPREL16", /* name */
230 TRUE, /* partial_inplace */
231 0x0000ffff, /* src_mask */
232 0x0000ffff, /* dst_mask */
233 FALSE), /* pcrel_offset */
234
235 /* Reference to literal section. */
236 HOWTO (R_MIPS_LITERAL, /* type */
237 0, /* rightshift */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
239 16, /* bitsize */
240 FALSE, /* pc_relative */
241 0, /* bitpos */
242 complain_overflow_signed, /* complain_on_overflow */
243 mips_elf_literal_reloc, /* special_function */
244 "R_MIPS_LITERAL", /* name */
245 TRUE, /* partial_inplace */
246 0x0000ffff, /* src_mask */
247 0x0000ffff, /* dst_mask */
248 FALSE), /* pcrel_offset */
249
250 /* Reference to global offset table. */
251 HOWTO (R_MIPS_GOT16, /* type */
252 0, /* rightshift */
253 2, /* size (0 = byte, 1 = short, 2 = long) */
254 16, /* bitsize */
255 FALSE, /* pc_relative */
256 0, /* bitpos */
257 complain_overflow_signed, /* complain_on_overflow */
258 _bfd_mips_elf_got16_reloc, /* special_function */
259 "R_MIPS_GOT16", /* name */
260 TRUE, /* partial_inplace */
261 0x0000ffff, /* src_mask */
262 0x0000ffff, /* dst_mask */
263 FALSE), /* pcrel_offset */
264
265 /* 16 bit PC relative reference. Note that the ABI document has a typo
266 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
267 We do the right thing here. */
268 HOWTO (R_MIPS_PC16, /* type */
269 2, /* rightshift */
270 2, /* size (0 = byte, 1 = short, 2 = long) */
271 16, /* bitsize */
272 TRUE, /* pc_relative */
273 0, /* bitpos */
274 complain_overflow_signed, /* complain_on_overflow */
275 _bfd_mips_elf_generic_reloc, /* special_function */
276 "R_MIPS_PC16", /* name */
277 TRUE, /* partial_inplace */
278 0x0000ffff, /* src_mask */
279 0x0000ffff, /* dst_mask */
280 TRUE), /* pcrel_offset */
281
282 /* 16 bit call through global offset table. */
283 HOWTO (R_MIPS_CALL16, /* type */
284 0, /* rightshift */
285 2, /* size (0 = byte, 1 = short, 2 = long) */
286 16, /* bitsize */
287 FALSE, /* pc_relative */
288 0, /* bitpos */
289 complain_overflow_signed, /* complain_on_overflow */
290 _bfd_mips_elf_generic_reloc, /* special_function */
291 "R_MIPS_CALL16", /* name */
292 TRUE, /* partial_inplace */
293 0x0000ffff, /* src_mask */
294 0x0000ffff, /* dst_mask */
295 FALSE), /* pcrel_offset */
296
297 /* 32 bit GP relative reference. */
298 HOWTO (R_MIPS_GPREL32, /* type */
299 0, /* rightshift */
300 2, /* size (0 = byte, 1 = short, 2 = long) */
301 32, /* bitsize */
302 FALSE, /* pc_relative */
303 0, /* bitpos */
304 complain_overflow_dont, /* complain_on_overflow */
305 mips_elf_gprel32_reloc, /* special_function */
306 "R_MIPS_GPREL32", /* name */
307 TRUE, /* partial_inplace */
308 0xffffffff, /* src_mask */
309 0xffffffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
311
312 /* The remaining relocs are defined on Irix 5, although they are
313 not defined by the ABI. */
314 EMPTY_HOWTO (13),
315 EMPTY_HOWTO (14),
316 EMPTY_HOWTO (15),
317
318 /* A 5 bit shift field. */
319 HOWTO (R_MIPS_SHIFT5, /* type */
320 0, /* rightshift */
321 2, /* size (0 = byte, 1 = short, 2 = long) */
322 5, /* bitsize */
323 FALSE, /* pc_relative */
324 6, /* bitpos */
325 complain_overflow_bitfield, /* complain_on_overflow */
326 _bfd_mips_elf_generic_reloc, /* special_function */
327 "R_MIPS_SHIFT5", /* name */
328 TRUE, /* partial_inplace */
329 0x000007c0, /* src_mask */
330 0x000007c0, /* dst_mask */
331 FALSE), /* pcrel_offset */
332
333 /* A 6 bit shift field. */
334 HOWTO (R_MIPS_SHIFT6, /* type */
335 0, /* rightshift */
336 2, /* size (0 = byte, 1 = short, 2 = long) */
337 6, /* bitsize */
338 FALSE, /* pc_relative */
339 6, /* bitpos */
340 complain_overflow_bitfield, /* complain_on_overflow */
341 mips_elf_shift6_reloc, /* special_function */
342 "R_MIPS_SHIFT6", /* name */
343 TRUE, /* partial_inplace */
344 0x000007c4, /* src_mask */
345 0x000007c4, /* dst_mask */
346 FALSE), /* pcrel_offset */
347
348 /* A 64 bit relocation. */
349 HOWTO (R_MIPS_64, /* type */
350 0, /* rightshift */
351 4, /* size (0 = byte, 1 = short, 2 = long) */
352 64, /* bitsize */
353 FALSE, /* pc_relative */
354 0, /* bitpos */
355 complain_overflow_dont, /* complain_on_overflow */
356 _bfd_mips_elf_generic_reloc, /* special_function */
357 "R_MIPS_64", /* name */
358 TRUE, /* partial_inplace */
359 MINUS_ONE, /* src_mask */
360 MINUS_ONE, /* dst_mask */
361 FALSE), /* pcrel_offset */
362
363 /* Displacement in the global offset table. */
364 HOWTO (R_MIPS_GOT_DISP, /* type */
365 0, /* rightshift */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
367 16, /* bitsize */
368 FALSE, /* pc_relative */
369 0, /* bitpos */
370 complain_overflow_signed, /* complain_on_overflow */
371 _bfd_mips_elf_generic_reloc, /* special_function */
372 "R_MIPS_GOT_DISP", /* name */
373 TRUE, /* partial_inplace */
374 0x0000ffff, /* src_mask */
375 0x0000ffff, /* dst_mask */
376 FALSE), /* pcrel_offset */
377
378 /* Displacement to page pointer in the global offset table. */
379 HOWTO (R_MIPS_GOT_PAGE, /* type */
380 0, /* rightshift */
381 2, /* size (0 = byte, 1 = short, 2 = long) */
382 16, /* bitsize */
383 FALSE, /* pc_relative */
384 0, /* bitpos */
385 complain_overflow_signed, /* complain_on_overflow */
386 _bfd_mips_elf_generic_reloc, /* special_function */
387 "R_MIPS_GOT_PAGE", /* name */
388 TRUE, /* partial_inplace */
389 0x0000ffff, /* src_mask */
390 0x0000ffff, /* dst_mask */
391 FALSE), /* pcrel_offset */
392
393 /* Offset from page pointer in the global offset table. */
394 HOWTO (R_MIPS_GOT_OFST, /* type */
395 0, /* rightshift */
396 2, /* size (0 = byte, 1 = short, 2 = long) */
397 16, /* bitsize */
398 FALSE, /* pc_relative */
399 0, /* bitpos */
400 complain_overflow_signed, /* complain_on_overflow */
401 _bfd_mips_elf_generic_reloc, /* special_function */
402 "R_MIPS_GOT_OFST", /* name */
403 TRUE, /* partial_inplace */
404 0x0000ffff, /* src_mask */
405 0x0000ffff, /* dst_mask */
406 FALSE), /* pcrel_offset */
407
408 /* High 16 bits of displacement in global offset table. */
409 HOWTO (R_MIPS_GOT_HI16, /* type */
410 0, /* rightshift */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
412 16, /* bitsize */
413 FALSE, /* pc_relative */
414 0, /* bitpos */
415 complain_overflow_dont, /* complain_on_overflow */
416 _bfd_mips_elf_generic_reloc, /* special_function */
417 "R_MIPS_GOT_HI16", /* name */
418 TRUE, /* partial_inplace */
419 0x0000ffff, /* src_mask */
420 0x0000ffff, /* dst_mask */
421 FALSE), /* pcrel_offset */
422
423 /* Low 16 bits of displacement in global offset table. */
424 HOWTO (R_MIPS_GOT_LO16, /* type */
425 0, /* rightshift */
426 2, /* size (0 = byte, 1 = short, 2 = long) */
427 16, /* bitsize */
428 FALSE, /* pc_relative */
429 0, /* bitpos */
430 complain_overflow_dont, /* complain_on_overflow */
431 _bfd_mips_elf_generic_reloc, /* special_function */
432 "R_MIPS_GOT_LO16", /* name */
433 TRUE, /* partial_inplace */
434 0x0000ffff, /* src_mask */
435 0x0000ffff, /* dst_mask */
436 FALSE), /* pcrel_offset */
437
438 /* 64 bit subtraction. */
439 HOWTO (R_MIPS_SUB, /* type */
440 0, /* rightshift */
441 4, /* size (0 = byte, 1 = short, 2 = long) */
442 64, /* bitsize */
443 FALSE, /* pc_relative */
444 0, /* bitpos */
445 complain_overflow_dont, /* complain_on_overflow */
446 _bfd_mips_elf_generic_reloc, /* special_function */
447 "R_MIPS_SUB", /* name */
448 TRUE, /* partial_inplace */
449 MINUS_ONE, /* src_mask */
450 MINUS_ONE, /* dst_mask */
451 FALSE), /* pcrel_offset */
452
453 /* Insert the addend as an instruction. */
454 /* FIXME: Not handled correctly. */
455 HOWTO (R_MIPS_INSERT_A, /* type */
456 0, /* rightshift */
457 2, /* size (0 = byte, 1 = short, 2 = long) */
458 32, /* bitsize */
459 FALSE, /* pc_relative */
460 0, /* bitpos */
461 complain_overflow_dont, /* complain_on_overflow */
462 _bfd_mips_elf_generic_reloc, /* special_function */
463 "R_MIPS_INSERT_A", /* name */
464 TRUE, /* partial_inplace */
465 0xffffffff, /* src_mask */
466 0xffffffff, /* dst_mask */
467 FALSE), /* pcrel_offset */
468
469 /* Insert the addend as an instruction, and change all relocations
470 to refer to the old instruction at the address. */
471 /* FIXME: Not handled correctly. */
472 HOWTO (R_MIPS_INSERT_B, /* type */
473 0, /* rightshift */
474 2, /* size (0 = byte, 1 = short, 2 = long) */
475 32, /* 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_INSERT_B", /* name */
481 TRUE, /* partial_inplace */
482 0xffffffff, /* src_mask */
483 0xffffffff, /* dst_mask */
484 FALSE), /* pcrel_offset */
485
486 /* Delete a 32 bit instruction. */
487 /* FIXME: Not handled correctly. */
488 HOWTO (R_MIPS_DELETE, /* type */
489 0, /* rightshift */
490 2, /* size (0 = byte, 1 = short, 2 = long) */
491 32, /* bitsize */
492 FALSE, /* pc_relative */
493 0, /* bitpos */
494 complain_overflow_dont, /* complain_on_overflow */
495 _bfd_mips_elf_generic_reloc, /* special_function */
496 "R_MIPS_DELETE", /* name */
497 TRUE, /* partial_inplace */
498 0xffffffff, /* src_mask */
499 0xffffffff, /* dst_mask */
500 FALSE), /* pcrel_offset */
501
502 /* The MIPS ELF64 ABI Draft wants us to support these for REL relocations.
503 We don't, because
504 a) It means building the addend from a R_MIPS_HIGHEST/R_MIPS_HIGHER/
505 R_MIPS_HI16/R_MIPS_LO16 sequence with varying ordering, using
506 fallable heuristics.
507 b) No other NewABI toolchain actually emits such relocations. */
508 EMPTY_HOWTO (R_MIPS_HIGHER),
509 EMPTY_HOWTO (R_MIPS_HIGHEST),
510
511 /* High 16 bits of displacement in global offset table. */
512 HOWTO (R_MIPS_CALL_HI16, /* type */
513 0, /* rightshift */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
515 16, /* bitsize */
516 FALSE, /* pc_relative */
517 0, /* bitpos */
518 complain_overflow_dont, /* complain_on_overflow */
519 _bfd_mips_elf_generic_reloc, /* special_function */
520 "R_MIPS_CALL_HI16", /* name */
521 TRUE, /* partial_inplace */
522 0x0000ffff, /* src_mask */
523 0x0000ffff, /* dst_mask */
524 FALSE), /* pcrel_offset */
525
526 /* Low 16 bits of displacement in global offset table. */
527 HOWTO (R_MIPS_CALL_LO16, /* type */
528 0, /* rightshift */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
530 16, /* bitsize */
531 FALSE, /* pc_relative */
532 0, /* bitpos */
533 complain_overflow_dont, /* complain_on_overflow */
534 _bfd_mips_elf_generic_reloc, /* special_function */
535 "R_MIPS_CALL_LO16", /* name */
536 TRUE, /* partial_inplace */
537 0x0000ffff, /* src_mask */
538 0x0000ffff, /* dst_mask */
539 FALSE), /* pcrel_offset */
540
541 /* Section displacement. */
542 HOWTO (R_MIPS_SCN_DISP, /* type */
543 0, /* rightshift */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
545 32, /* bitsize */
546 FALSE, /* pc_relative */
547 0, /* bitpos */
548 complain_overflow_dont, /* complain_on_overflow */
549 _bfd_mips_elf_generic_reloc, /* special_function */
550 "R_MIPS_SCN_DISP", /* name */
551 TRUE, /* partial_inplace */
552 0xffffffff, /* src_mask */
553 0xffffffff, /* dst_mask */
554 FALSE), /* pcrel_offset */
555
556 HOWTO (R_MIPS_REL16, /* type */
557 0, /* rightshift */
558 1, /* size (0 = byte, 1 = short, 2 = long) */
559 16, /* bitsize */
560 FALSE, /* pc_relative */
561 0, /* bitpos */
562 complain_overflow_signed, /* complain_on_overflow */
563 _bfd_mips_elf_generic_reloc, /* special_function */
564 "R_MIPS_REL16", /* name */
565 TRUE, /* partial_inplace */
566 0xffff, /* src_mask */
567 0xffff, /* dst_mask */
568 FALSE), /* pcrel_offset */
569
570 /* These two are obsolete. */
571 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
572 EMPTY_HOWTO (R_MIPS_PJUMP),
573
574 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
575 It must be used for multigot GOT's (and only there). */
576 HOWTO (R_MIPS_RELGOT, /* type */
577 0, /* rightshift */
578 2, /* size (0 = byte, 1 = short, 2 = long) */
579 32, /* bitsize */
580 FALSE, /* pc_relative */
581 0, /* bitpos */
582 complain_overflow_dont, /* complain_on_overflow */
583 _bfd_mips_elf_generic_reloc, /* special_function */
584 "R_MIPS_RELGOT", /* name */
585 TRUE, /* partial_inplace */
586 0xffffffff, /* src_mask */
587 0xffffffff, /* dst_mask */
588 FALSE), /* pcrel_offset */
589
590 /* Protected jump conversion. This is an optimization hint. No
591 relocation is required for correctness. */
592 HOWTO (R_MIPS_JALR, /* type */
593 0, /* rightshift */
594 2, /* size (0 = byte, 1 = short, 2 = long) */
595 32, /* bitsize */
596 FALSE, /* pc_relative */
597 0, /* bitpos */
598 complain_overflow_dont, /* complain_on_overflow */
599 _bfd_mips_elf_generic_reloc, /* special_function */
600 "R_MIPS_JALR", /* name */
601 FALSE, /* partial_inplace */
602 0x00000000, /* src_mask */
603 0x00000000, /* dst_mask */
604 FALSE), /* pcrel_offset */
605
606 /* TLS GD/LD dynamic relocations. */
607 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
608 0, /* rightshift */
609 2, /* size (0 = byte, 1 = short, 2 = long) */
610 32, /* bitsize */
611 FALSE, /* pc_relative */
612 0, /* bitpos */
613 complain_overflow_dont, /* complain_on_overflow */
614 _bfd_mips_elf_generic_reloc, /* special_function */
615 "R_MIPS_TLS_DTPMOD32", /* name */
616 TRUE, /* partial_inplace */
617 0xffffffff, /* src_mask */
618 0xffffffff, /* dst_mask */
619 FALSE), /* pcrel_offset */
620
621 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
622 0, /* rightshift */
623 2, /* size (0 = byte, 1 = short, 2 = long) */
624 32, /* bitsize */
625 FALSE, /* pc_relative */
626 0, /* bitpos */
627 complain_overflow_dont, /* complain_on_overflow */
628 _bfd_mips_elf_generic_reloc, /* special_function */
629 "R_MIPS_TLS_DTPREL32", /* name */
630 TRUE, /* partial_inplace */
631 0xffffffff, /* src_mask */
632 0xffffffff, /* dst_mask */
633 FALSE), /* pcrel_offset */
634
635 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
636 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
637
638 /* TLS general dynamic variable reference. */
639 HOWTO (R_MIPS_TLS_GD, /* type */
640 0, /* rightshift */
641 2, /* size (0 = byte, 1 = short, 2 = long) */
642 16, /* bitsize */
643 FALSE, /* pc_relative */
644 0, /* bitpos */
645 complain_overflow_signed, /* complain_on_overflow */
646 _bfd_mips_elf_generic_reloc, /* special_function */
647 "R_MIPS_TLS_GD", /* name */
648 TRUE, /* partial_inplace */
649 0x0000ffff, /* src_mask */
650 0x0000ffff, /* dst_mask */
651 FALSE), /* pcrel_offset */
652
653 /* TLS local dynamic variable reference. */
654 HOWTO (R_MIPS_TLS_LDM, /* type */
655 0, /* rightshift */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
657 16, /* bitsize */
658 FALSE, /* pc_relative */
659 0, /* bitpos */
660 complain_overflow_signed, /* complain_on_overflow */
661 _bfd_mips_elf_generic_reloc, /* special_function */
662 "R_MIPS_TLS_LDM", /* name */
663 TRUE, /* partial_inplace */
664 0x0000ffff, /* src_mask */
665 0x0000ffff, /* dst_mask */
666 FALSE), /* pcrel_offset */
667
668 /* TLS local dynamic offset. */
669 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
670 0, /* rightshift */
671 2, /* size (0 = byte, 1 = short, 2 = long) */
672 16, /* bitsize */
673 FALSE, /* pc_relative */
674 0, /* bitpos */
675 complain_overflow_signed, /* complain_on_overflow */
676 _bfd_mips_elf_generic_reloc, /* special_function */
677 "R_MIPS_TLS_DTPREL_HI16", /* name */
678 TRUE, /* partial_inplace */
679 0x0000ffff, /* src_mask */
680 0x0000ffff, /* dst_mask */
681 FALSE), /* pcrel_offset */
682
683 /* TLS local dynamic offset. */
684 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
685 0, /* rightshift */
686 2, /* size (0 = byte, 1 = short, 2 = long) */
687 16, /* bitsize */
688 FALSE, /* pc_relative */
689 0, /* bitpos */
690 complain_overflow_signed, /* complain_on_overflow */
691 _bfd_mips_elf_generic_reloc, /* special_function */
692 "R_MIPS_TLS_DTPREL_LO16", /* name */
693 TRUE, /* partial_inplace */
694 0x0000ffff, /* src_mask */
695 0x0000ffff, /* dst_mask */
696 FALSE), /* pcrel_offset */
697
698 /* TLS thread pointer offset. */
699 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
700 0, /* rightshift */
701 2, /* size (0 = byte, 1 = short, 2 = long) */
702 16, /* bitsize */
703 FALSE, /* pc_relative */
704 0, /* bitpos */
705 complain_overflow_signed, /* complain_on_overflow */
706 _bfd_mips_elf_generic_reloc, /* special_function */
707 "R_MIPS_TLS_GOTTPREL", /* name */
708 TRUE, /* partial_inplace */
709 0x0000ffff, /* src_mask */
710 0x0000ffff, /* dst_mask */
711 FALSE), /* pcrel_offset */
712
713 /* TLS IE dynamic relocations. */
714 HOWTO (R_MIPS_TLS_TPREL32, /* type */
715 0, /* rightshift */
716 2, /* size (0 = byte, 1 = short, 2 = long) */
717 32, /* bitsize */
718 FALSE, /* pc_relative */
719 0, /* bitpos */
720 complain_overflow_dont, /* complain_on_overflow */
721 _bfd_mips_elf_generic_reloc, /* special_function */
722 "R_MIPS_TLS_TPREL32", /* name */
723 TRUE, /* partial_inplace */
724 0xffffffff, /* src_mask */
725 0xffffffff, /* dst_mask */
726 FALSE), /* pcrel_offset */
727
728 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
729
730 /* TLS thread pointer offset. */
731 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
732 0, /* rightshift */
733 2, /* size (0 = byte, 1 = short, 2 = long) */
734 16, /* bitsize */
735 FALSE, /* pc_relative */
736 0, /* bitpos */
737 complain_overflow_signed, /* complain_on_overflow */
738 _bfd_mips_elf_generic_reloc, /* special_function */
739 "R_MIPS_TLS_TPREL_HI16", /* name */
740 TRUE, /* partial_inplace */
741 0x0000ffff, /* src_mask */
742 0x0000ffff, /* dst_mask */
743 FALSE), /* pcrel_offset */
744
745 /* TLS thread pointer offset. */
746 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
747 0, /* rightshift */
748 2, /* size (0 = byte, 1 = short, 2 = long) */
749 16, /* bitsize */
750 FALSE, /* pc_relative */
751 0, /* bitpos */
752 complain_overflow_signed, /* complain_on_overflow */
753 _bfd_mips_elf_generic_reloc, /* special_function */
754 "R_MIPS_TLS_TPREL_LO16", /* name */
755 TRUE, /* partial_inplace */
756 0x0000ffff, /* src_mask */
757 0x0000ffff, /* dst_mask */
758 FALSE), /* pcrel_offset */
759 };
760
761 /* The relocation table used for SHT_RELA sections. */
762
763 static reloc_howto_type elf_mips_howto_table_rela[] =
764 {
765 /* No relocation. */
766 HOWTO (R_MIPS_NONE, /* type */
767 0, /* rightshift */
768 0, /* size (0 = byte, 1 = short, 2 = long) */
769 0, /* bitsize */
770 FALSE, /* pc_relative */
771 0, /* bitpos */
772 complain_overflow_dont, /* complain_on_overflow */
773 _bfd_mips_elf_generic_reloc, /* special_function */
774 "R_MIPS_NONE", /* name */
775 FALSE, /* partial_inplace */
776 0, /* src_mask */
777 0, /* dst_mask */
778 FALSE), /* pcrel_offset */
779
780 /* 16 bit relocation. */
781 HOWTO (R_MIPS_16, /* 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_signed, /* complain_on_overflow */
788 _bfd_mips_elf_generic_reloc, /* special_function */
789 "R_MIPS_16", /* name */
790 FALSE, /* partial_inplace */
791 0, /* src_mask */
792 0x0000, /* dst_mask */
793 FALSE), /* pcrel_offset */
794
795 /* 32 bit relocation. */
796 HOWTO (R_MIPS_32, /* type */
797 0, /* rightshift */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
799 32, /* bitsize */
800 FALSE, /* pc_relative */
801 0, /* bitpos */
802 complain_overflow_dont, /* complain_on_overflow */
803 _bfd_mips_elf_generic_reloc, /* special_function */
804 "R_MIPS_32", /* name */
805 FALSE, /* partial_inplace */
806 0, /* src_mask */
807 0xffffffff, /* dst_mask */
808 FALSE), /* pcrel_offset */
809
810 /* 32 bit symbol relative relocation. */
811 HOWTO (R_MIPS_REL32, /* type */
812 0, /* rightshift */
813 2, /* size (0 = byte, 1 = short, 2 = long) */
814 32, /* bitsize */
815 FALSE, /* pc_relative */
816 0, /* bitpos */
817 complain_overflow_dont, /* complain_on_overflow */
818 _bfd_mips_elf_generic_reloc, /* special_function */
819 "R_MIPS_REL32", /* name */
820 FALSE, /* partial_inplace */
821 0, /* src_mask */
822 0xffffffff, /* dst_mask */
823 FALSE), /* pcrel_offset */
824
825 /* 26 bit jump address. */
826 HOWTO (R_MIPS_26, /* type */
827 2, /* rightshift */
828 2, /* size (0 = byte, 1 = short, 2 = long) */
829 26, /* bitsize */
830 FALSE, /* pc_relative */
831 0, /* bitpos */
832 complain_overflow_dont, /* complain_on_overflow */
833 /* This needs complex overflow
834 detection, because the upper 36
835 bits must match the PC + 4. */
836 _bfd_mips_elf_generic_reloc, /* special_function */
837 "R_MIPS_26", /* name */
838 FALSE, /* partial_inplace */
839 0, /* src_mask */
840 0x03ffffff, /* dst_mask */
841 FALSE), /* pcrel_offset */
842
843 /* High 16 bits of symbol value. */
844 HOWTO (R_MIPS_HI16, /* type */
845 0, /* rightshift */
846 2, /* size (0 = byte, 1 = short, 2 = long) */
847 16, /* bitsize */
848 FALSE, /* pc_relative */
849 0, /* bitpos */
850 complain_overflow_dont, /* complain_on_overflow */
851 _bfd_mips_elf_generic_reloc, /* special_function */
852 "R_MIPS_HI16", /* name */
853 FALSE, /* partial_inplace */
854 0, /* src_mask */
855 0x0000ffff, /* dst_mask */
856 FALSE), /* pcrel_offset */
857
858 /* Low 16 bits of symbol value. */
859 HOWTO (R_MIPS_LO16, /* type */
860 0, /* rightshift */
861 2, /* size (0 = byte, 1 = short, 2 = long) */
862 16, /* bitsize */
863 FALSE, /* pc_relative */
864 0, /* bitpos */
865 complain_overflow_dont, /* complain_on_overflow */
866 _bfd_mips_elf_generic_reloc, /* special_function */
867 "R_MIPS_LO16", /* name */
868 FALSE, /* partial_inplace */
869 0, /* src_mask */
870 0x0000ffff, /* dst_mask */
871 FALSE), /* pcrel_offset */
872
873 /* GP relative reference. */
874 HOWTO (R_MIPS_GPREL16, /* type */
875 0, /* rightshift */
876 2, /* size (0 = byte, 1 = short, 2 = long) */
877 16, /* bitsize */
878 FALSE, /* pc_relative */
879 0, /* bitpos */
880 complain_overflow_signed, /* complain_on_overflow */
881 mips_elf_gprel16_reloc, /* special_function */
882 "R_MIPS_GPREL16", /* name */
883 FALSE, /* partial_inplace */
884 0, /* src_mask */
885 0x0000ffff, /* dst_mask */
886 FALSE), /* pcrel_offset */
887
888 /* Reference to literal section. */
889 HOWTO (R_MIPS_LITERAL, /* type */
890 0, /* rightshift */
891 2, /* size (0 = byte, 1 = short, 2 = long) */
892 16, /* bitsize */
893 FALSE, /* pc_relative */
894 0, /* bitpos */
895 complain_overflow_signed, /* complain_on_overflow */
896 mips_elf_literal_reloc, /* special_function */
897 "R_MIPS_LITERAL", /* name */
898 FALSE, /* partial_inplace */
899 0, /* src_mask */
900 0x0000ffff, /* dst_mask */
901 FALSE), /* pcrel_offset */
902
903 /* Reference to global offset table. */
904 HOWTO (R_MIPS_GOT16, /* type */
905 0, /* rightshift */
906 2, /* size (0 = byte, 1 = short, 2 = long) */
907 16, /* bitsize */
908 FALSE, /* pc_relative */
909 0, /* bitpos */
910 complain_overflow_signed, /* complain_on_overflow */
911 _bfd_mips_elf_generic_reloc, /* special_function */
912 "R_MIPS_GOT16", /* name */
913 FALSE, /* partial_inplace */
914 0, /* src_mask */
915 0x0000ffff, /* dst_mask */
916 FALSE), /* pcrel_offset */
917
918 /* 16 bit PC relative reference. Note that the ABI document has a typo
919 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
920 We do the right thing here. */
921 HOWTO (R_MIPS_PC16, /* type */
922 2, /* rightshift */
923 2, /* size (0 = byte, 1 = short, 2 = long) */
924 16, /* bitsize */
925 TRUE, /* pc_relative */
926 0, /* bitpos */
927 complain_overflow_signed, /* complain_on_overflow */
928 _bfd_mips_elf_generic_reloc, /* special_function */
929 "R_MIPS_PC16", /* name */
930 FALSE, /* partial_inplace */
931 0, /* src_mask */
932 0x0000ffff, /* dst_mask */
933 TRUE), /* pcrel_offset */
934
935 /* 16 bit call through global offset table. */
936 HOWTO (R_MIPS_CALL16, /* type */
937 0, /* rightshift */
938 2, /* size (0 = byte, 1 = short, 2 = long) */
939 16, /* bitsize */
940 FALSE, /* pc_relative */
941 0, /* bitpos */
942 complain_overflow_signed, /* complain_on_overflow */
943 _bfd_mips_elf_generic_reloc, /* special_function */
944 "R_MIPS_CALL16", /* name */
945 FALSE, /* partial_inplace */
946 0, /* src_mask */
947 0x0000ffff, /* dst_mask */
948 FALSE), /* pcrel_offset */
949
950 /* 32 bit GP relative reference. */
951 HOWTO (R_MIPS_GPREL32, /* type */
952 0, /* rightshift */
953 2, /* size (0 = byte, 1 = short, 2 = long) */
954 32, /* bitsize */
955 FALSE, /* pc_relative */
956 0, /* bitpos */
957 complain_overflow_dont, /* complain_on_overflow */
958 mips_elf_gprel32_reloc, /* special_function */
959 "R_MIPS_GPREL32", /* name */
960 FALSE, /* partial_inplace */
961 0, /* src_mask */
962 0xffffffff, /* dst_mask */
963 FALSE), /* pcrel_offset */
964
965 EMPTY_HOWTO (13),
966 EMPTY_HOWTO (14),
967 EMPTY_HOWTO (15),
968
969 /* A 5 bit shift field. */
970 HOWTO (R_MIPS_SHIFT5, /* type */
971 0, /* rightshift */
972 2, /* size (0 = byte, 1 = short, 2 = long) */
973 5, /* bitsize */
974 FALSE, /* pc_relative */
975 6, /* bitpos */
976 complain_overflow_bitfield, /* complain_on_overflow */
977 _bfd_mips_elf_generic_reloc, /* special_function */
978 "R_MIPS_SHIFT5", /* name */
979 FALSE, /* partial_inplace */
980 0, /* src_mask */
981 0x000007c0, /* dst_mask */
982 FALSE), /* pcrel_offset */
983
984 /* A 6 bit shift field. */
985 HOWTO (R_MIPS_SHIFT6, /* type */
986 0, /* rightshift */
987 2, /* size (0 = byte, 1 = short, 2 = long) */
988 6, /* bitsize */
989 FALSE, /* pc_relative */
990 6, /* bitpos */
991 complain_overflow_bitfield, /* complain_on_overflow */
992 mips_elf_shift6_reloc, /* special_function */
993 "R_MIPS_SHIFT6", /* name */
994 FALSE, /* partial_inplace */
995 0, /* src_mask */
996 0x000007c4, /* dst_mask */
997 FALSE), /* pcrel_offset */
998
999 /* 64 bit relocation. */
1000 HOWTO (R_MIPS_64, /* type */
1001 0, /* rightshift */
1002 4, /* size (0 = byte, 1 = short, 2 = long) */
1003 64, /* bitsize */
1004 FALSE, /* pc_relative */
1005 0, /* bitpos */
1006 complain_overflow_dont, /* complain_on_overflow */
1007 _bfd_mips_elf_generic_reloc, /* special_function */
1008 "R_MIPS_64", /* name */
1009 FALSE, /* partial_inplace */
1010 0, /* src_mask */
1011 MINUS_ONE, /* dst_mask */
1012 FALSE), /* pcrel_offset */
1013
1014 /* Displacement in the global offset table. */
1015 HOWTO (R_MIPS_GOT_DISP, /* type */
1016 0, /* rightshift */
1017 2, /* size (0 = byte, 1 = short, 2 = long) */
1018 16, /* bitsize */
1019 FALSE, /* pc_relative */
1020 0, /* bitpos */
1021 complain_overflow_signed, /* complain_on_overflow */
1022 _bfd_mips_elf_generic_reloc, /* special_function */
1023 "R_MIPS_GOT_DISP", /* name */
1024 FALSE, /* partial_inplace */
1025 0, /* src_mask */
1026 0x0000ffff, /* dst_mask */
1027 FALSE), /* pcrel_offset */
1028
1029 /* Displacement to page pointer in the global offset table. */
1030 HOWTO (R_MIPS_GOT_PAGE, /* type */
1031 0, /* rightshift */
1032 2, /* size (0 = byte, 1 = short, 2 = long) */
1033 16, /* bitsize */
1034 FALSE, /* pc_relative */
1035 0, /* bitpos */
1036 complain_overflow_signed, /* complain_on_overflow */
1037 _bfd_mips_elf_generic_reloc, /* special_function */
1038 "R_MIPS_GOT_PAGE", /* name */
1039 FALSE, /* partial_inplace */
1040 0, /* src_mask */
1041 0x0000ffff, /* dst_mask */
1042 FALSE), /* pcrel_offset */
1043
1044 /* Offset from page pointer in the global offset table. */
1045 HOWTO (R_MIPS_GOT_OFST, /* type */
1046 0, /* rightshift */
1047 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 16, /* bitsize */
1049 FALSE, /* pc_relative */
1050 0, /* bitpos */
1051 complain_overflow_signed, /* complain_on_overflow */
1052 _bfd_mips_elf_generic_reloc, /* special_function */
1053 "R_MIPS_GOT_OFST", /* name */
1054 FALSE, /* partial_inplace */
1055 0, /* src_mask */
1056 0x0000ffff, /* dst_mask */
1057 FALSE), /* pcrel_offset */
1058
1059 /* High 16 bits of displacement in global offset table. */
1060 HOWTO (R_MIPS_GOT_HI16, /* type */
1061 0, /* rightshift */
1062 2, /* size (0 = byte, 1 = short, 2 = long) */
1063 16, /* bitsize */
1064 FALSE, /* pc_relative */
1065 0, /* bitpos */
1066 complain_overflow_dont, /* complain_on_overflow */
1067 _bfd_mips_elf_generic_reloc, /* special_function */
1068 "R_MIPS_GOT_HI16", /* name */
1069 FALSE, /* partial_inplace */
1070 0, /* src_mask */
1071 0x0000ffff, /* dst_mask */
1072 FALSE), /* pcrel_offset */
1073
1074 /* Low 16 bits of displacement in global offset table. */
1075 HOWTO (R_MIPS_GOT_LO16, /* type */
1076 0, /* rightshift */
1077 2, /* size (0 = byte, 1 = short, 2 = long) */
1078 16, /* bitsize */
1079 FALSE, /* pc_relative */
1080 0, /* bitpos */
1081 complain_overflow_dont, /* complain_on_overflow */
1082 _bfd_mips_elf_generic_reloc, /* special_function */
1083 "R_MIPS_GOT_LO16", /* name */
1084 FALSE, /* partial_inplace */
1085 0, /* src_mask */
1086 0x0000ffff, /* dst_mask */
1087 FALSE), /* pcrel_offset */
1088
1089 /* 64 bit subtraction. */
1090 HOWTO (R_MIPS_SUB, /* type */
1091 0, /* rightshift */
1092 4, /* size (0 = byte, 1 = short, 2 = long) */
1093 64, /* bitsize */
1094 FALSE, /* pc_relative */
1095 0, /* bitpos */
1096 complain_overflow_dont, /* complain_on_overflow */
1097 _bfd_mips_elf_generic_reloc, /* special_function */
1098 "R_MIPS_SUB", /* name */
1099 FALSE, /* partial_inplace */
1100 0, /* src_mask */
1101 MINUS_ONE, /* dst_mask */
1102 FALSE), /* pcrel_offset */
1103
1104 /* Insert the addend as an instruction. */
1105 /* FIXME: Not handled correctly. */
1106 HOWTO (R_MIPS_INSERT_A, /* type */
1107 0, /* rightshift */
1108 2, /* size (0 = byte, 1 = short, 2 = long) */
1109 32, /* bitsize */
1110 FALSE, /* pc_relative */
1111 0, /* bitpos */
1112 complain_overflow_dont, /* complain_on_overflow */
1113 _bfd_mips_elf_generic_reloc, /* special_function */
1114 "R_MIPS_INSERT_A", /* name */
1115 FALSE, /* partial_inplace */
1116 0, /* src_mask */
1117 0xffffffff, /* dst_mask */
1118 FALSE), /* pcrel_offset */
1119
1120 /* Insert the addend as an instruction, and change all relocations
1121 to refer to the old instruction at the address. */
1122 /* FIXME: Not handled correctly. */
1123 HOWTO (R_MIPS_INSERT_B, /* type */
1124 0, /* rightshift */
1125 2, /* size (0 = byte, 1 = short, 2 = long) */
1126 32, /* bitsize */
1127 FALSE, /* pc_relative */
1128 0, /* bitpos */
1129 complain_overflow_dont, /* complain_on_overflow */
1130 _bfd_mips_elf_generic_reloc, /* special_function */
1131 "R_MIPS_INSERT_B", /* name */
1132 FALSE, /* partial_inplace */
1133 0, /* src_mask */
1134 0xffffffff, /* dst_mask */
1135 FALSE), /* pcrel_offset */
1136
1137 /* Delete a 32 bit instruction. */
1138 /* FIXME: Not handled correctly. */
1139 HOWTO (R_MIPS_DELETE, /* type */
1140 0, /* rightshift */
1141 2, /* size (0 = byte, 1 = short, 2 = long) */
1142 32, /* bitsize */
1143 FALSE, /* pc_relative */
1144 0, /* bitpos */
1145 complain_overflow_dont, /* complain_on_overflow */
1146 _bfd_mips_elf_generic_reloc, /* special_function */
1147 "R_MIPS_DELETE", /* name */
1148 FALSE, /* partial_inplace */
1149 0, /* src_mask */
1150 0xffffffff, /* dst_mask */
1151 FALSE), /* pcrel_offset */
1152
1153 /* Get the higher value of a 64 bit addend. */
1154 HOWTO (R_MIPS_HIGHER, /* type */
1155 0, /* rightshift */
1156 2, /* size (0 = byte, 1 = short, 2 = long) */
1157 16, /* bitsize */
1158 FALSE, /* pc_relative */
1159 0, /* bitpos */
1160 complain_overflow_dont, /* complain_on_overflow */
1161 _bfd_mips_elf_generic_reloc, /* special_function */
1162 "R_MIPS_HIGHER", /* name */
1163 FALSE, /* partial_inplace */
1164 0, /* src_mask */
1165 0x0000ffff, /* dst_mask */
1166 FALSE), /* pcrel_offset */
1167
1168 /* Get the highest value of a 64 bit addend. */
1169 HOWTO (R_MIPS_HIGHEST, /* type */
1170 0, /* rightshift */
1171 2, /* size (0 = byte, 1 = short, 2 = long) */
1172 16, /* bitsize */
1173 FALSE, /* pc_relative */
1174 0, /* bitpos */
1175 complain_overflow_dont, /* complain_on_overflow */
1176 _bfd_mips_elf_generic_reloc, /* special_function */
1177 "R_MIPS_HIGHEST", /* name */
1178 FALSE, /* partial_inplace */
1179 0, /* src_mask */
1180 0x0000ffff, /* dst_mask */
1181 FALSE), /* pcrel_offset */
1182
1183 /* High 16 bits of displacement in global offset table. */
1184 HOWTO (R_MIPS_CALL_HI16, /* type */
1185 0, /* rightshift */
1186 2, /* size (0 = byte, 1 = short, 2 = long) */
1187 16, /* bitsize */
1188 FALSE, /* pc_relative */
1189 0, /* bitpos */
1190 complain_overflow_dont, /* complain_on_overflow */
1191 _bfd_mips_elf_generic_reloc, /* special_function */
1192 "R_MIPS_CALL_HI16", /* name */
1193 FALSE, /* partial_inplace */
1194 0, /* src_mask */
1195 0x0000ffff, /* dst_mask */
1196 FALSE), /* pcrel_offset */
1197
1198 /* Low 16 bits of displacement in global offset table. */
1199 HOWTO (R_MIPS_CALL_LO16, /* type */
1200 0, /* rightshift */
1201 2, /* size (0 = byte, 1 = short, 2 = long) */
1202 16, /* bitsize */
1203 FALSE, /* pc_relative */
1204 0, /* bitpos */
1205 complain_overflow_dont, /* complain_on_overflow */
1206 _bfd_mips_elf_generic_reloc, /* special_function */
1207 "R_MIPS_CALL_LO16", /* name */
1208 FALSE, /* partial_inplace */
1209 0, /* src_mask */
1210 0x0000ffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1212
1213 /* Section displacement, used by an associated event location section. */
1214 HOWTO (R_MIPS_SCN_DISP, /* type */
1215 0, /* rightshift */
1216 2, /* size (0 = byte, 1 = short, 2 = long) */
1217 32, /* bitsize */
1218 FALSE, /* pc_relative */
1219 0, /* bitpos */
1220 complain_overflow_dont, /* complain_on_overflow */
1221 _bfd_mips_elf_generic_reloc, /* special_function */
1222 "R_MIPS_SCN_DISP", /* name */
1223 FALSE, /* partial_inplace */
1224 0, /* src_mask */
1225 0xffffffff, /* dst_mask */
1226 FALSE), /* pcrel_offset */
1227
1228 /* 16 bit relocation. */
1229 HOWTO (R_MIPS_REL16, /* type */
1230 0, /* rightshift */
1231 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 16, /* bitsize */
1233 FALSE, /* pc_relative */
1234 0, /* bitpos */
1235 complain_overflow_signed, /* complain_on_overflow */
1236 _bfd_mips_elf_generic_reloc, /* special_function */
1237 "R_MIPS_REL16", /* name */
1238 FALSE, /* partial_inplace */
1239 0, /* src_mask */
1240 0xffff, /* dst_mask */
1241 FALSE), /* pcrel_offset */
1242
1243 /* These two are obsolete. */
1244 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
1245 EMPTY_HOWTO (R_MIPS_PJUMP),
1246
1247 /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section.
1248 It must be used for multigot GOT's (and only there). */
1249 HOWTO (R_MIPS_RELGOT, /* type */
1250 0, /* rightshift */
1251 2, /* size (0 = byte, 1 = short, 2 = long) */
1252 32, /* bitsize */
1253 FALSE, /* pc_relative */
1254 0, /* bitpos */
1255 complain_overflow_dont, /* complain_on_overflow */
1256 _bfd_mips_elf_generic_reloc, /* special_function */
1257 "R_MIPS_RELGOT", /* name */
1258 FALSE, /* partial_inplace */
1259 0, /* src_mask */
1260 0xffffffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1262
1263 /* Protected jump conversion. This is an optimization hint. No
1264 relocation is required for correctness. */
1265 HOWTO (R_MIPS_JALR, /* type */
1266 0, /* rightshift */
1267 2, /* size (0 = byte, 1 = short, 2 = long) */
1268 32, /* bitsize */
1269 FALSE, /* pc_relative */
1270 0, /* bitpos */
1271 complain_overflow_dont, /* complain_on_overflow */
1272 _bfd_mips_elf_generic_reloc, /* special_function */
1273 "R_MIPS_JALR", /* name */
1274 FALSE, /* partial_inplace */
1275 0, /* src_mask */
1276 0, /* dst_mask */
1277 FALSE), /* pcrel_offset */
1278
1279 /* TLS GD/LD dynamic relocations. */
1280 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
1281 0, /* rightshift */
1282 2, /* size (0 = byte, 1 = short, 2 = long) */
1283 32, /* bitsize */
1284 FALSE, /* pc_relative */
1285 0, /* bitpos */
1286 complain_overflow_dont, /* complain_on_overflow */
1287 _bfd_mips_elf_generic_reloc, /* special_function */
1288 "R_MIPS_TLS_DTPMOD32", /* name */
1289 TRUE, /* partial_inplace */
1290 0xffffffff, /* src_mask */
1291 0xffffffff, /* dst_mask */
1292 FALSE), /* pcrel_offset */
1293
1294 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
1295 0, /* rightshift */
1296 2, /* size (0 = byte, 1 = short, 2 = long) */
1297 32, /* bitsize */
1298 FALSE, /* pc_relative */
1299 0, /* bitpos */
1300 complain_overflow_dont, /* complain_on_overflow */
1301 _bfd_mips_elf_generic_reloc, /* special_function */
1302 "R_MIPS_TLS_DTPREL32", /* name */
1303 TRUE, /* partial_inplace */
1304 0xffffffff, /* src_mask */
1305 0xffffffff, /* dst_mask */
1306 FALSE), /* pcrel_offset */
1307
1308 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
1309 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
1310
1311 /* TLS general dynamic variable reference. */
1312 HOWTO (R_MIPS_TLS_GD, /* type */
1313 0, /* rightshift */
1314 2, /* size (0 = byte, 1 = short, 2 = long) */
1315 16, /* bitsize */
1316 FALSE, /* pc_relative */
1317 0, /* bitpos */
1318 complain_overflow_signed, /* complain_on_overflow */
1319 _bfd_mips_elf_generic_reloc, /* special_function */
1320 "R_MIPS_TLS_GD", /* name */
1321 TRUE, /* partial_inplace */
1322 0x0000ffff, /* src_mask */
1323 0x0000ffff, /* dst_mask */
1324 FALSE), /* pcrel_offset */
1325
1326 /* TLS local dynamic variable reference. */
1327 HOWTO (R_MIPS_TLS_LDM, /* type */
1328 0, /* rightshift */
1329 2, /* size (0 = byte, 1 = short, 2 = long) */
1330 16, /* bitsize */
1331 FALSE, /* pc_relative */
1332 0, /* bitpos */
1333 complain_overflow_signed, /* complain_on_overflow */
1334 _bfd_mips_elf_generic_reloc, /* special_function */
1335 "R_MIPS_TLS_LDM", /* name */
1336 TRUE, /* partial_inplace */
1337 0x0000ffff, /* src_mask */
1338 0x0000ffff, /* dst_mask */
1339 FALSE), /* pcrel_offset */
1340
1341 /* TLS local dynamic offset. */
1342 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
1343 0, /* rightshift */
1344 2, /* size (0 = byte, 1 = short, 2 = long) */
1345 16, /* bitsize */
1346 FALSE, /* pc_relative */
1347 0, /* bitpos */
1348 complain_overflow_signed, /* complain_on_overflow */
1349 _bfd_mips_elf_generic_reloc, /* special_function */
1350 "R_MIPS_TLS_DTPREL_HI16", /* name */
1351 TRUE, /* partial_inplace */
1352 0x0000ffff, /* src_mask */
1353 0x0000ffff, /* dst_mask */
1354 FALSE), /* pcrel_offset */
1355
1356 /* TLS local dynamic offset. */
1357 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
1358 0, /* rightshift */
1359 2, /* size (0 = byte, 1 = short, 2 = long) */
1360 16, /* bitsize */
1361 FALSE, /* pc_relative */
1362 0, /* bitpos */
1363 complain_overflow_signed, /* complain_on_overflow */
1364 _bfd_mips_elf_generic_reloc, /* special_function */
1365 "R_MIPS_TLS_DTPREL_LO16", /* name */
1366 TRUE, /* partial_inplace */
1367 0x0000ffff, /* src_mask */
1368 0x0000ffff, /* dst_mask */
1369 FALSE), /* pcrel_offset */
1370
1371 /* TLS thread pointer offset. */
1372 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
1373 0, /* rightshift */
1374 2, /* size (0 = byte, 1 = short, 2 = long) */
1375 16, /* bitsize */
1376 FALSE, /* pc_relative */
1377 0, /* bitpos */
1378 complain_overflow_signed, /* complain_on_overflow */
1379 _bfd_mips_elf_generic_reloc, /* special_function */
1380 "R_MIPS_TLS_GOTTPREL", /* name */
1381 TRUE, /* partial_inplace */
1382 0x0000ffff, /* src_mask */
1383 0x0000ffff, /* dst_mask */
1384 FALSE), /* pcrel_offset */
1385
1386 /* TLS IE dynamic relocations. */
1387 HOWTO (R_MIPS_TLS_TPREL32, /* type */
1388 0, /* rightshift */
1389 2, /* size (0 = byte, 1 = short, 2 = long) */
1390 32, /* bitsize */
1391 FALSE, /* pc_relative */
1392 0, /* bitpos */
1393 complain_overflow_dont, /* complain_on_overflow */
1394 _bfd_mips_elf_generic_reloc, /* special_function */
1395 "R_MIPS_TLS_TPREL32", /* name */
1396 TRUE, /* partial_inplace */
1397 0xffffffff, /* src_mask */
1398 0xffffffff, /* dst_mask */
1399 FALSE), /* pcrel_offset */
1400
1401 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
1402
1403 /* TLS thread pointer offset. */
1404 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
1405 0, /* rightshift */
1406 2, /* size (0 = byte, 1 = short, 2 = long) */
1407 16, /* bitsize */
1408 FALSE, /* pc_relative */
1409 0, /* bitpos */
1410 complain_overflow_signed, /* complain_on_overflow */
1411 _bfd_mips_elf_generic_reloc, /* special_function */
1412 "R_MIPS_TLS_TPREL_HI16", /* name */
1413 TRUE, /* partial_inplace */
1414 0x0000ffff, /* src_mask */
1415 0x0000ffff, /* dst_mask */
1416 FALSE), /* pcrel_offset */
1417
1418 /* TLS thread pointer offset. */
1419 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
1420 0, /* rightshift */
1421 2, /* size (0 = byte, 1 = short, 2 = long) */
1422 16, /* bitsize */
1423 FALSE, /* pc_relative */
1424 0, /* bitpos */
1425 complain_overflow_signed, /* complain_on_overflow */
1426 _bfd_mips_elf_generic_reloc, /* special_function */
1427 "R_MIPS_TLS_TPREL_LO16", /* name */
1428 TRUE, /* partial_inplace */
1429 0x0000ffff, /* src_mask */
1430 0x0000ffff, /* dst_mask */
1431 FALSE), /* pcrel_offset */
1432 };
1433
1434 static reloc_howto_type elf_mips16_howto_table_rel[] =
1435 {
1436 /* The reloc used for the mips16 jump instruction. */
1437 HOWTO (R_MIPS16_26, /* type */
1438 2, /* rightshift */
1439 2, /* size (0 = byte, 1 = short, 2 = long) */
1440 26, /* bitsize */
1441 FALSE, /* pc_relative */
1442 0, /* bitpos */
1443 complain_overflow_dont, /* complain_on_overflow */
1444 /* This needs complex overflow
1445 detection, because the upper four
1446 bits must match the PC. */
1447 mips16_jump_reloc, /* special_function */
1448 "R_MIPS16_26", /* name */
1449 TRUE, /* partial_inplace */
1450 0x3ffffff, /* src_mask */
1451 0x3ffffff, /* dst_mask */
1452 FALSE), /* pcrel_offset */
1453
1454 /* The reloc used for the mips16 gprel instruction. */
1455 HOWTO (R_MIPS16_GPREL, /* type */
1456 0, /* rightshift */
1457 2, /* size (0 = byte, 1 = short, 2 = long) */
1458 16, /* bitsize */
1459 FALSE, /* pc_relative */
1460 0, /* bitpos */
1461 complain_overflow_signed, /* complain_on_overflow */
1462 mips16_gprel_reloc, /* special_function */
1463 "R_MIPS16_GPREL", /* name */
1464 TRUE, /* partial_inplace */
1465 0x0000ffff, /* src_mask */
1466 0x0000ffff, /* dst_mask */
1467 FALSE), /* pcrel_offset */
1468
1469 /* A placeholder for MIPS16 reference to global offset table. */
1470 EMPTY_HOWTO (R_MIPS16_GOT16),
1471
1472 /* A placeholder for MIPS16 16 bit call through global offset table. */
1473 EMPTY_HOWTO (R_MIPS16_CALL16),
1474
1475 /* MIPS16 high 16 bits of symbol value. */
1476 HOWTO (R_MIPS16_HI16, /* type */
1477 16, /* rightshift */
1478 2, /* size (0 = byte, 1 = short, 2 = long) */
1479 16, /* bitsize */
1480 FALSE, /* pc_relative */
1481 0, /* bitpos */
1482 complain_overflow_dont, /* complain_on_overflow */
1483 _bfd_mips_elf_hi16_reloc, /* special_function */
1484 "R_MIPS16_HI16", /* name */
1485 TRUE, /* partial_inplace */
1486 0x0000ffff, /* src_mask */
1487 0x0000ffff, /* dst_mask */
1488 FALSE), /* pcrel_offset */
1489
1490 /* MIPS16 low 16 bits of symbol value. */
1491 HOWTO (R_MIPS16_LO16, /* type */
1492 0, /* rightshift */
1493 2, /* size (0 = byte, 1 = short, 2 = long) */
1494 16, /* bitsize */
1495 FALSE, /* pc_relative */
1496 0, /* bitpos */
1497 complain_overflow_dont, /* complain_on_overflow */
1498 _bfd_mips_elf_lo16_reloc, /* special_function */
1499 "R_MIPS16_LO16", /* name */
1500 TRUE, /* partial_inplace */
1501 0x0000ffff, /* src_mask */
1502 0x0000ffff, /* dst_mask */
1503 FALSE), /* pcrel_offset */
1504 };
1505
1506 static reloc_howto_type elf_mips16_howto_table_rela[] =
1507 {
1508 /* The reloc used for the mips16 jump instruction. */
1509 HOWTO (R_MIPS16_26, /* type */
1510 2, /* rightshift */
1511 2, /* size (0 = byte, 1 = short, 2 = long) */
1512 26, /* bitsize */
1513 FALSE, /* pc_relative */
1514 0, /* bitpos */
1515 complain_overflow_dont, /* complain_on_overflow */
1516 /* This needs complex overflow
1517 detection, because the upper four
1518 bits must match the PC. */
1519 mips16_jump_reloc, /* special_function */
1520 "R_MIPS16_26", /* name */
1521 FALSE, /* partial_inplace */
1522 0x3ffffff, /* src_mask */
1523 0x3ffffff, /* dst_mask */
1524 FALSE), /* pcrel_offset */
1525
1526 /* The reloc used for the mips16 gprel instruction. */
1527 HOWTO (R_MIPS16_GPREL, /* type */
1528 0, /* rightshift */
1529 2, /* size (0 = byte, 1 = short, 2 = long) */
1530 16, /* bitsize */
1531 FALSE, /* pc_relative */
1532 0, /* bitpos */
1533 complain_overflow_signed, /* complain_on_overflow */
1534 mips16_gprel_reloc, /* special_function */
1535 "R_MIPS16_GPREL", /* name */
1536 FALSE, /* partial_inplace */
1537 0x0000ffff, /* src_mask */
1538 0x0000ffff, /* dst_mask */
1539 FALSE), /* pcrel_offset */
1540
1541 /* A placeholder for MIPS16 reference to global offset table. */
1542 EMPTY_HOWTO (R_MIPS16_GOT16),
1543
1544 /* A placeholder for MIPS16 16 bit call through global offset table. */
1545 EMPTY_HOWTO (R_MIPS16_CALL16),
1546
1547 /* MIPS16 high 16 bits of symbol value. */
1548 HOWTO (R_MIPS16_HI16, /* type */
1549 16, /* rightshift */
1550 2, /* size (0 = byte, 1 = short, 2 = long) */
1551 16, /* bitsize */
1552 FALSE, /* pc_relative */
1553 0, /* bitpos */
1554 complain_overflow_dont, /* complain_on_overflow */
1555 _bfd_mips_elf_hi16_reloc, /* special_function */
1556 "R_MIPS16_HI16", /* name */
1557 FALSE, /* partial_inplace */
1558 0x0000ffff, /* src_mask */
1559 0x0000ffff, /* dst_mask */
1560 FALSE), /* pcrel_offset */
1561
1562 /* MIPS16 low 16 bits of symbol value. */
1563 HOWTO (R_MIPS16_LO16, /* type */
1564 0, /* rightshift */
1565 2, /* size (0 = byte, 1 = short, 2 = long) */
1566 16, /* bitsize */
1567 FALSE, /* pc_relative */
1568 0, /* bitpos */
1569 complain_overflow_dont, /* complain_on_overflow */
1570 _bfd_mips_elf_lo16_reloc, /* special_function */
1571 "R_MIPS16_LO16", /* name */
1572 FALSE, /* partial_inplace */
1573 0x0000ffff, /* src_mask */
1574 0x0000ffff, /* dst_mask */
1575 FALSE), /* pcrel_offset */
1576 };
1577
1578 /* GNU extension to record C++ vtable hierarchy */
1579 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
1580 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
1581 0, /* rightshift */
1582 2, /* size (0 = byte, 1 = short, 2 = long) */
1583 0, /* bitsize */
1584 FALSE, /* pc_relative */
1585 0, /* bitpos */
1586 complain_overflow_dont, /* complain_on_overflow */
1587 NULL, /* special_function */
1588 "R_MIPS_GNU_VTINHERIT", /* name */
1589 FALSE, /* partial_inplace */
1590 0, /* src_mask */
1591 0, /* dst_mask */
1592 FALSE); /* pcrel_offset */
1593
1594 /* GNU extension to record C++ vtable member usage */
1595 static reloc_howto_type elf_mips_gnu_vtentry_howto =
1596 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
1597 0, /* rightshift */
1598 2, /* size (0 = byte, 1 = short, 2 = long) */
1599 0, /* bitsize */
1600 FALSE, /* pc_relative */
1601 0, /* bitpos */
1602 complain_overflow_dont, /* complain_on_overflow */
1603 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
1604 "R_MIPS_GNU_VTENTRY", /* name */
1605 FALSE, /* partial_inplace */
1606 0, /* src_mask */
1607 0, /* dst_mask */
1608 FALSE); /* pcrel_offset */
1609 \f
1610 /* 16 bit offset for pc-relative branches. */
1611 static reloc_howto_type elf_mips_gnu_rel16_s2 =
1612 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1613 2, /* rightshift */
1614 2, /* size (0 = byte, 1 = short, 2 = long) */
1615 16, /* bitsize */
1616 TRUE, /* pc_relative */
1617 0, /* bitpos */
1618 complain_overflow_signed, /* complain_on_overflow */
1619 _bfd_mips_elf_generic_reloc, /* special_function */
1620 "R_MIPS_GNU_REL16_S2", /* name */
1621 TRUE, /* partial_inplace */
1622 0x0000ffff, /* src_mask */
1623 0x0000ffff, /* dst_mask */
1624 TRUE); /* pcrel_offset */
1625
1626 /* 16 bit offset for pc-relative branches. */
1627 static reloc_howto_type elf_mips_gnu_rela16_s2 =
1628 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
1629 2, /* rightshift */
1630 2, /* size (0 = byte, 1 = short, 2 = long) */
1631 16, /* bitsize */
1632 TRUE, /* pc_relative */
1633 0, /* bitpos */
1634 complain_overflow_signed, /* complain_on_overflow */
1635 _bfd_mips_elf_generic_reloc, /* special_function */
1636 "R_MIPS_GNU_REL16_S2", /* name */
1637 FALSE, /* partial_inplace */
1638 0, /* src_mask */
1639 0x0000ffff, /* dst_mask */
1640 TRUE); /* pcrel_offset */
1641 \f
1642 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
1643 dangerous relocation. */
1644
1645 static bfd_boolean
1646 mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
1647 {
1648 unsigned int count;
1649 asymbol **sym;
1650 unsigned int i;
1651
1652 /* If we've already figured out what GP will be, just return it. */
1653 *pgp = _bfd_get_gp_value (output_bfd);
1654 if (*pgp)
1655 return TRUE;
1656
1657 count = bfd_get_symcount (output_bfd);
1658 sym = bfd_get_outsymbols (output_bfd);
1659
1660 /* The linker script will have created a symbol named `_gp' with the
1661 appropriate value. */
1662 if (sym == NULL)
1663 i = count;
1664 else
1665 {
1666 for (i = 0; i < count; i++, sym++)
1667 {
1668 register const char *name;
1669
1670 name = bfd_asymbol_name (*sym);
1671 if (*name == '_' && strcmp (name, "_gp") == 0)
1672 {
1673 *pgp = bfd_asymbol_value (*sym);
1674 _bfd_set_gp_value (output_bfd, *pgp);
1675 break;
1676 }
1677 }
1678 }
1679
1680 if (i >= count)
1681 {
1682 /* Only get the error once. */
1683 *pgp = 4;
1684 _bfd_set_gp_value (output_bfd, *pgp);
1685 return FALSE;
1686 }
1687
1688 return TRUE;
1689 }
1690
1691 /* We have to figure out the gp value, so that we can adjust the
1692 symbol value correctly. We look up the symbol _gp in the output
1693 BFD. If we can't find it, we're stuck. We cache it in the ELF
1694 target data. We don't need to adjust the symbol value for an
1695 external symbol if we are producing relocatable output. */
1696
1697 static bfd_reloc_status_type
1698 mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
1699 char **error_message, bfd_vma *pgp)
1700 {
1701 if (bfd_is_und_section (symbol->section)
1702 && ! relocatable)
1703 {
1704 *pgp = 0;
1705 return bfd_reloc_undefined;
1706 }
1707
1708 *pgp = _bfd_get_gp_value (output_bfd);
1709 if (*pgp == 0
1710 && (! relocatable
1711 || (symbol->flags & BSF_SECTION_SYM) != 0))
1712 {
1713 if (relocatable)
1714 {
1715 /* Make up a value. */
1716 *pgp = symbol->section->output_section->vma /*+ 0x4000*/;
1717 _bfd_set_gp_value (output_bfd, *pgp);
1718 }
1719 else if (!mips_elf_assign_gp (output_bfd, pgp))
1720 {
1721 *error_message =
1722 (char *) _("GP relative relocation when _gp not defined");
1723 return bfd_reloc_dangerous;
1724 }
1725 }
1726
1727 return bfd_reloc_ok;
1728 }
1729
1730 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1731 become the offset from the gp register. */
1732
1733 static bfd_reloc_status_type
1734 mips_elf_gprel16_reloc (bfd *abfd ATTRIBUTE_UNUSED, arelent *reloc_entry,
1735 asymbol *symbol, void *data ATTRIBUTE_UNUSED,
1736 asection *input_section, bfd *output_bfd,
1737 char **error_message ATTRIBUTE_UNUSED)
1738 {
1739 bfd_boolean relocatable;
1740 bfd_reloc_status_type ret;
1741 bfd_vma gp;
1742
1743 if (output_bfd != NULL)
1744 relocatable = TRUE;
1745 else
1746 {
1747 relocatable = FALSE;
1748 output_bfd = symbol->section->output_section->owner;
1749 }
1750
1751 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1752 &gp);
1753 if (ret != bfd_reloc_ok)
1754 return ret;
1755
1756 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1757 input_section, relocatable,
1758 data, gp);
1759 }
1760
1761 /* Do a R_MIPS_LITERAL relocation. */
1762
1763 static bfd_reloc_status_type
1764 mips_elf_literal_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1765 void *data, asection *input_section, bfd *output_bfd,
1766 char **error_message)
1767 {
1768 bfd_boolean relocatable;
1769 bfd_reloc_status_type ret;
1770 bfd_vma gp;
1771
1772 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1773 if (output_bfd != NULL
1774 && (symbol->flags & BSF_SECTION_SYM) == 0
1775 && (symbol->flags & BSF_LOCAL) != 0)
1776 {
1777 *error_message = (char *)
1778 _("literal relocation occurs for an external symbol");
1779 return bfd_reloc_outofrange;
1780 }
1781
1782 /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. */
1783 if (output_bfd != NULL)
1784 relocatable = TRUE;
1785 else
1786 {
1787 relocatable = FALSE;
1788 output_bfd = symbol->section->output_section->owner;
1789 }
1790
1791 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1792 &gp);
1793 if (ret != bfd_reloc_ok)
1794 return ret;
1795
1796 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1797 input_section, relocatable,
1798 data, gp);
1799 }
1800
1801 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1802 become the offset from the gp register. */
1803
1804 static bfd_reloc_status_type
1805 mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1806 void *data, asection *input_section, bfd *output_bfd,
1807 char **error_message)
1808 {
1809 bfd_boolean relocatable;
1810 bfd_reloc_status_type ret;
1811 bfd_vma gp;
1812
1813 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1814 if (output_bfd != NULL
1815 && (symbol->flags & BSF_SECTION_SYM) == 0
1816 && (symbol->flags & BSF_LOCAL) != 0)
1817 {
1818 *error_message = (char *)
1819 _("32bits gp relative relocation occurs for an external symbol");
1820 return bfd_reloc_outofrange;
1821 }
1822
1823 if (output_bfd != NULL)
1824 {
1825 relocatable = TRUE;
1826 gp = _bfd_get_gp_value (output_bfd);
1827 }
1828 else
1829 {
1830 relocatable = FALSE;
1831 output_bfd = symbol->section->output_section->owner;
1832
1833 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
1834 error_message, &gp);
1835 if (ret != bfd_reloc_ok)
1836 return ret;
1837 }
1838
1839 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1840 relocatable, data, gp);
1841 }
1842
1843 static bfd_reloc_status_type
1844 gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1845 asection *input_section, bfd_boolean relocatable,
1846 void *data, bfd_vma gp)
1847 {
1848 bfd_vma relocation;
1849 unsigned long val;
1850
1851 if (bfd_is_com_section (symbol->section))
1852 relocation = 0;
1853 else
1854 relocation = symbol->value;
1855
1856 relocation += symbol->section->output_section->vma;
1857 relocation += symbol->section->output_offset;
1858
1859 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1860 return bfd_reloc_outofrange;
1861
1862 if (reloc_entry->howto->src_mask == 0)
1863 val = 0;
1864 else
1865 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1866
1867 /* Set val to the offset into the section or symbol. */
1868 val += reloc_entry->addend;
1869
1870 /* Adjust val for the final section location and GP value. If we
1871 are producing relocatable output, we don't want to do this for
1872 an external symbol. */
1873 if (! relocatable
1874 || (symbol->flags & BSF_SECTION_SYM) != 0)
1875 val += relocation - gp;
1876
1877 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1878
1879 if (relocatable)
1880 reloc_entry->address += input_section->output_offset;
1881
1882 return bfd_reloc_ok;
1883 }
1884
1885 /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2,
1886 the rest is at bits 6-10. The bitpos already got right by the howto. */
1887
1888 static bfd_reloc_status_type
1889 mips_elf_shift6_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1890 void *data, asection *input_section, bfd *output_bfd,
1891 char **error_message)
1892 {
1893 if (reloc_entry->howto->partial_inplace)
1894 {
1895 reloc_entry->addend = ((reloc_entry->addend & 0x00007c0)
1896 | (reloc_entry->addend & 0x00000800) >> 9);
1897 }
1898
1899 return _bfd_mips_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1900 input_section, output_bfd,
1901 error_message);
1902 }
1903 \f
1904 /* Handle a mips16 jump. */
1905
1906 static bfd_reloc_status_type
1907 mips16_jump_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1908 arelent *reloc_entry ATTRIBUTE_UNUSED,
1909 asymbol *symbol ATTRIBUTE_UNUSED,
1910 void *data ATTRIBUTE_UNUSED,
1911 asection *input_section, bfd *output_bfd ATTRIBUTE_UNUSED,
1912 char **error_message ATTRIBUTE_UNUSED)
1913 {
1914 static bfd_boolean warned = FALSE;
1915
1916 /* FIXME. */
1917 if (! warned)
1918 (*_bfd_error_handler)
1919 (_("Linking mips16 objects into %s format is not supported"),
1920 bfd_get_target (input_section->output_section->owner));
1921 warned = TRUE;
1922
1923 return bfd_reloc_undefined;
1924 }
1925
1926 /* Handle a mips16 GP relative reloc. */
1927
1928 static bfd_reloc_status_type
1929 mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1930 void *data, asection *input_section, bfd *output_bfd,
1931 char **error_message)
1932 {
1933 bfd_boolean relocatable;
1934 bfd_reloc_status_type ret;
1935 bfd_byte *location;
1936 bfd_vma gp;
1937
1938 /* If we're relocating, and this is an external symbol, we don't want
1939 to change anything. */
1940 if (output_bfd != NULL
1941 && (symbol->flags & BSF_SECTION_SYM) == 0
1942 && (symbol->flags & BSF_LOCAL) != 0)
1943 {
1944 reloc_entry->address += input_section->output_offset;
1945 return bfd_reloc_ok;
1946 }
1947
1948 if (output_bfd != NULL)
1949 relocatable = TRUE;
1950 else
1951 {
1952 relocatable = FALSE;
1953 output_bfd = symbol->section->output_section->owner;
1954 }
1955
1956 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
1957 &gp);
1958 if (ret != bfd_reloc_ok)
1959 return ret;
1960
1961 location = (bfd_byte *) data + reloc_entry->address;
1962 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1963 location);
1964 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1965 input_section, relocatable,
1966 data, gp);
1967 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1968 location);
1969
1970 return ret;
1971 }
1972 \f
1973 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1974
1975 struct elf_reloc_map {
1976 bfd_reloc_code_real_type bfd_val;
1977 enum elf_mips_reloc_type elf_val;
1978 };
1979
1980 static const struct elf_reloc_map mips_reloc_map[] =
1981 {
1982 { BFD_RELOC_NONE, R_MIPS_NONE },
1983 { BFD_RELOC_16, R_MIPS_16 },
1984 { BFD_RELOC_32, R_MIPS_32 },
1985 /* There is no BFD reloc for R_MIPS_REL32. */
1986 { BFD_RELOC_CTOR, R_MIPS_32 },
1987 { BFD_RELOC_64, R_MIPS_64 },
1988 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
1989 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1990 { BFD_RELOC_LO16, R_MIPS_LO16 },
1991 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1992 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1993 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1994 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1995 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1996 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1997 { BFD_RELOC_MIPS_SHIFT5, R_MIPS_SHIFT5 },
1998 { BFD_RELOC_MIPS_SHIFT6, R_MIPS_SHIFT6 },
1999 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
2000 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
2001 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
2002 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
2003 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
2004 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
2005 { BFD_RELOC_MIPS_INSERT_A, R_MIPS_INSERT_A },
2006 { BFD_RELOC_MIPS_INSERT_B, R_MIPS_INSERT_B },
2007 { BFD_RELOC_MIPS_DELETE, R_MIPS_DELETE },
2008 { BFD_RELOC_MIPS_HIGHEST, R_MIPS_HIGHEST },
2009 { BFD_RELOC_MIPS_HIGHER, R_MIPS_HIGHER },
2010 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
2011 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
2012 { BFD_RELOC_MIPS_SCN_DISP, R_MIPS_SCN_DISP },
2013 { BFD_RELOC_MIPS_REL16, R_MIPS_REL16 },
2014 /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */
2015 { BFD_RELOC_MIPS_RELGOT, R_MIPS_RELGOT },
2016 { BFD_RELOC_MIPS_JALR, R_MIPS_JALR },
2017 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
2018 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
2019 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
2020 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
2021 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
2022 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
2023 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
2024 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
2025 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
2026 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
2027 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
2028 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
2029 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
2030 };
2031
2032 static const struct elf_reloc_map mips16_reloc_map[] =
2033 {
2034 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
2035 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
2036 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
2037 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
2038 };
2039
2040 /* Given a BFD reloc type, return a howto structure. */
2041
2042 static reloc_howto_type *
2043 bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
2044 bfd_reloc_code_real_type code)
2045 {
2046 unsigned int i;
2047 /* FIXME: We default to RELA here instead of choosing the right
2048 relocation variant. */
2049 reloc_howto_type *howto_table = elf_mips_howto_table_rela;
2050 reloc_howto_type *howto16_table = elf_mips16_howto_table_rela;
2051
2052 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
2053 i++)
2054 {
2055 if (mips_reloc_map[i].bfd_val == code)
2056 return &howto_table[(int) mips_reloc_map[i].elf_val];
2057 }
2058
2059 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
2060 i++)
2061 {
2062 if (mips16_reloc_map[i].bfd_val == code)
2063 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
2064 }
2065
2066 switch (code)
2067 {
2068 case BFD_RELOC_VTABLE_INHERIT:
2069 return &elf_mips_gnu_vtinherit_howto;
2070 case BFD_RELOC_VTABLE_ENTRY:
2071 return &elf_mips_gnu_vtentry_howto;
2072 default:
2073 bfd_set_error (bfd_error_bad_value);
2074 return NULL;
2075 }
2076 }
2077
2078 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2079
2080 static reloc_howto_type *
2081 mips_elf_n32_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
2082 {
2083 switch (r_type)
2084 {
2085 case R_MIPS_GNU_VTINHERIT:
2086 return &elf_mips_gnu_vtinherit_howto;
2087 case R_MIPS_GNU_VTENTRY:
2088 return &elf_mips_gnu_vtentry_howto;
2089 case R_MIPS_GNU_REL16_S2:
2090 if (rela_p)
2091 return &elf_mips_gnu_rela16_s2;
2092 else
2093 return &elf_mips_gnu_rel16_s2;
2094 default:
2095 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
2096 {
2097 if (rela_p)
2098 return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min];
2099 else
2100 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
2101 }
2102 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
2103 if (rela_p)
2104 return &elf_mips_howto_table_rela[r_type];
2105 else
2106 return &elf_mips_howto_table_rel[r_type];
2107 break;
2108 }
2109 }
2110
2111 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
2112
2113 static void
2114 mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
2115 {
2116 unsigned int r_type;
2117
2118 r_type = ELF32_R_TYPE (dst->r_info);
2119 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, FALSE);
2120
2121 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
2122 value for the object file. We get the addend now, rather than
2123 when we do the relocation, because the symbol manipulations done
2124 by the linker may cause us to lose track of the input BFD. */
2125 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
2126 && (r_type == (unsigned int) R_MIPS_GPREL16
2127 || r_type == (unsigned int) R_MIPS_LITERAL))
2128 cache_ptr->addend = elf_gp (abfd);
2129 }
2130
2131 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
2132
2133 static void
2134 mips_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
2135 arelent *cache_ptr, Elf_Internal_Rela *dst)
2136 {
2137 unsigned int r_type;
2138
2139 r_type = ELF32_R_TYPE (dst->r_info);
2140 cache_ptr->howto = mips_elf_n32_rtype_to_howto (r_type, TRUE);
2141 cache_ptr->addend = dst->r_addend;
2142 }
2143 \f
2144 /* Determine whether a symbol is global for the purposes of splitting
2145 the symbol table into global symbols and local symbols. At least
2146 on Irix 5, this split must be between section symbols and all other
2147 symbols. On most ELF targets the split is between static symbols
2148 and externally visible symbols. */
2149
2150 static bfd_boolean
2151 mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
2152 {
2153 if (SGI_COMPAT (abfd))
2154 return (sym->flags & BSF_SECTION_SYM) == 0;
2155 else
2156 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
2157 || bfd_is_und_section (bfd_get_section (sym))
2158 || bfd_is_com_section (bfd_get_section (sym)));
2159 }
2160 \f
2161 /* Set the right machine number for a MIPS ELF file. */
2162
2163 static bfd_boolean
2164 mips_elf_n32_object_p (bfd *abfd)
2165 {
2166 unsigned long mach;
2167
2168 /* Irix 5 and 6 are broken. Object file symbol tables are not always
2169 sorted correctly such that local symbols precede global symbols,
2170 and the sh_info field in the symbol table is not always right. */
2171 if (SGI_COMPAT (abfd))
2172 elf_bad_symtab (abfd) = TRUE;
2173
2174 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
2175 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
2176
2177 if (! ABI_N32_P(abfd))
2178 return FALSE;
2179
2180 return TRUE;
2181 }
2182 \f
2183 /* Support for core dump NOTE sections. */
2184 static bfd_boolean
2185 elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
2186 {
2187 int offset;
2188 unsigned int size;
2189
2190 switch (note->descsz)
2191 {
2192 default:
2193 return FALSE;
2194
2195 case 440: /* Linux/MIPS N32 */
2196 /* pr_cursig */
2197 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
2198
2199 /* pr_pid */
2200 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
2201
2202 /* pr_reg */
2203 offset = 72;
2204 size = 360;
2205
2206 break;
2207 }
2208
2209 /* Make a ".reg/999" section. */
2210 return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
2211 note->descpos + offset);
2212 }
2213
2214 static bfd_boolean
2215 elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
2216 {
2217 switch (note->descsz)
2218 {
2219 default:
2220 return FALSE;
2221
2222 case 128: /* Linux/MIPS elf_prpsinfo */
2223 elf_tdata (abfd)->core_program
2224 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
2225 elf_tdata (abfd)->core_command
2226 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
2227 }
2228
2229 /* Note that for some reason, a spurious space is tacked
2230 onto the end of the args in some (at least one anyway)
2231 implementations, so strip it off if it exists. */
2232
2233 {
2234 char *command = elf_tdata (abfd)->core_command;
2235 int n = strlen (command);
2236
2237 if (0 < n && command[n - 1] == ' ')
2238 command[n - 1] = '\0';
2239 }
2240
2241 return TRUE;
2242 }
2243 \f
2244 /* Depending on the target vector we generate some version of Irix
2245 executables or "normal" MIPS ELF ABI executables. */
2246 static irix_compat_t
2247 elf_n32_mips_irix_compat (bfd *abfd)
2248 {
2249 if ((abfd->xvec == &bfd_elf32_nbigmips_vec)
2250 || (abfd->xvec == &bfd_elf32_nlittlemips_vec))
2251 return ict_irix6;
2252 else
2253 return ict_none;
2254 }
2255 \f
2256 /* ECOFF swapping routines. These are used when dealing with the
2257 .mdebug section, which is in the ECOFF debugging format. */
2258 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
2259 /* Symbol table magic number. */
2260 magicSym,
2261 /* Alignment of debugging information. E.g., 4. */
2262 4,
2263 /* Sizes of external symbolic information. */
2264 sizeof (struct hdr_ext),
2265 sizeof (struct dnr_ext),
2266 sizeof (struct pdr_ext),
2267 sizeof (struct sym_ext),
2268 sizeof (struct opt_ext),
2269 sizeof (struct fdr_ext),
2270 sizeof (struct rfd_ext),
2271 sizeof (struct ext_ext),
2272 /* Functions to swap in external symbolic data. */
2273 ecoff_swap_hdr_in,
2274 ecoff_swap_dnr_in,
2275 ecoff_swap_pdr_in,
2276 ecoff_swap_sym_in,
2277 ecoff_swap_opt_in,
2278 ecoff_swap_fdr_in,
2279 ecoff_swap_rfd_in,
2280 ecoff_swap_ext_in,
2281 _bfd_ecoff_swap_tir_in,
2282 _bfd_ecoff_swap_rndx_in,
2283 /* Functions to swap out external symbolic data. */
2284 ecoff_swap_hdr_out,
2285 ecoff_swap_dnr_out,
2286 ecoff_swap_pdr_out,
2287 ecoff_swap_sym_out,
2288 ecoff_swap_opt_out,
2289 ecoff_swap_fdr_out,
2290 ecoff_swap_rfd_out,
2291 ecoff_swap_ext_out,
2292 _bfd_ecoff_swap_tir_out,
2293 _bfd_ecoff_swap_rndx_out,
2294 /* Function to read in symbolic data. */
2295 _bfd_mips_elf_read_ecoff_info
2296 };
2297 \f
2298 #define ELF_ARCH bfd_arch_mips
2299 #define ELF_MACHINE_CODE EM_MIPS
2300
2301 #define elf_backend_collect TRUE
2302 #define elf_backend_type_change_ok TRUE
2303 #define elf_backend_can_gc_sections TRUE
2304 #define elf_info_to_howto mips_info_to_howto_rela
2305 #define elf_info_to_howto_rel mips_info_to_howto_rel
2306 #define elf_backend_sym_is_global mips_elf_sym_is_global
2307 #define elf_backend_object_p mips_elf_n32_object_p
2308 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
2309 #define elf_backend_section_processing _bfd_mips_elf_section_processing
2310 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
2311 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
2312 #define elf_backend_section_from_bfd_section \
2313 _bfd_mips_elf_section_from_bfd_section
2314 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
2315 #define elf_backend_link_output_symbol_hook \
2316 _bfd_mips_elf_link_output_symbol_hook
2317 #define elf_backend_create_dynamic_sections \
2318 _bfd_mips_elf_create_dynamic_sections
2319 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
2320 #define elf_backend_adjust_dynamic_symbol \
2321 _bfd_mips_elf_adjust_dynamic_symbol
2322 #define elf_backend_always_size_sections \
2323 _bfd_mips_elf_always_size_sections
2324 #define elf_backend_size_dynamic_sections \
2325 _bfd_mips_elf_size_dynamic_sections
2326 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
2327 #define elf_backend_finish_dynamic_symbol \
2328 _bfd_mips_elf_finish_dynamic_symbol
2329 #define elf_backend_finish_dynamic_sections \
2330 _bfd_mips_elf_finish_dynamic_sections
2331 #define elf_backend_final_write_processing \
2332 _bfd_mips_elf_final_write_processing
2333 #define elf_backend_additional_program_headers \
2334 _bfd_mips_elf_additional_program_headers
2335 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
2336 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
2337 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
2338 #define elf_backend_copy_indirect_symbol \
2339 _bfd_mips_elf_copy_indirect_symbol
2340 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
2341 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
2342 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
2343 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
2344
2345 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
2346
2347 /* MIPS n32 ELF can use a mixture of REL and RELA, but some Relocations
2348 work better/work only in RELA, so we default to this. */
2349 #define elf_backend_may_use_rel_p 1
2350 #define elf_backend_may_use_rela_p 1
2351 #define elf_backend_default_use_rela_p 1
2352 #define elf_backend_sign_extend_vma TRUE
2353
2354 #define elf_backend_discard_info _bfd_mips_elf_discard_info
2355 #define elf_backend_ignore_discarded_relocs \
2356 _bfd_mips_elf_ignore_discarded_relocs
2357 #define elf_backend_write_section _bfd_mips_elf_write_section
2358 #define elf_backend_mips_irix_compat elf_n32_mips_irix_compat
2359 #define elf_backend_mips_rtype_to_howto mips_elf_n32_rtype_to_howto
2360 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
2361 #define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
2362 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
2363 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
2364 #define bfd_elf32_bfd_get_relocated_section_contents \
2365 _bfd_elf_mips_get_relocated_section_contents
2366 #define bfd_elf32_bfd_link_hash_table_create \
2367 _bfd_mips_elf_link_hash_table_create
2368 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
2369 #define bfd_elf32_bfd_merge_private_bfd_data \
2370 _bfd_mips_elf_merge_private_bfd_data
2371 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
2372 #define bfd_elf32_bfd_print_private_bfd_data \
2373 _bfd_mips_elf_print_private_bfd_data
2374 #define bfd_elf32_bfd_relax_section _bfd_mips_relax_section
2375
2376 /* Support for SGI-ish mips targets using n32 ABI. */
2377
2378 #define TARGET_LITTLE_SYM bfd_elf32_nlittlemips_vec
2379 #define TARGET_LITTLE_NAME "elf32-nlittlemips"
2380 #define TARGET_BIG_SYM bfd_elf32_nbigmips_vec
2381 #define TARGET_BIG_NAME "elf32-nbigmips"
2382
2383 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
2384 a value of 0x1000, and we are compatible.
2385 FIXME: How does this affect NewABI? */
2386 #define ELF_MAXPAGESIZE 0x1000
2387
2388 #include "elf32-target.h"
2389
2390 /* Support for traditional mips targets using n32 ABI. */
2391 #undef TARGET_LITTLE_SYM
2392 #undef TARGET_LITTLE_NAME
2393 #undef TARGET_BIG_SYM
2394 #undef TARGET_BIG_NAME
2395
2396 #undef ELF_MAXPAGESIZE
2397
2398 #define TARGET_LITTLE_SYM bfd_elf32_ntradlittlemips_vec
2399 #define TARGET_LITTLE_NAME "elf32-ntradlittlemips"
2400 #define TARGET_BIG_SYM bfd_elf32_ntradbigmips_vec
2401 #define TARGET_BIG_NAME "elf32-ntradbigmips"
2402
2403 /* The SVR4 MIPS ABI says that this should be 0x10000, and Linux uses
2404 page sizes of up to that limit, so we need to respect it. */
2405 #define ELF_MAXPAGESIZE 0x10000
2406 #define elf32_bed elf32_tradbed
2407
2408 /* Include the target file again for this target. */
2409 #include "elf32-target.h"
GDB Binutils - Deliverables
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