* elf32-ppc.c (ppc_elf_relocate_section): Don't look for a nop after
[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 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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_reloc_status_type mips_elf_hi16_reloc
51 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
52 static bfd_reloc_status_type mips_elf_lo16_reloc
53 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
54 static bfd_reloc_status_type mips_elf_got16_reloc
55 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
56 static bfd_reloc_status_type mips_elf_gprel32_reloc
57 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
58 static bfd_reloc_status_type mips32_64bit_reloc
59 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
60 static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
61 PARAMS ((bfd *, bfd_reloc_code_real_type));
62 static reloc_howto_type *mips_elf32_rtype_to_howto
63 PARAMS ((unsigned int, bfd_boolean));
64 static void mips_info_to_howto_rel
65 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
66 static void mips_info_to_howto_rela
67 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
68 static bfd_boolean mips_elf_sym_is_global
69 PARAMS ((bfd *, asymbol *));
70 static bfd_boolean mips_elf32_object_p
71 PARAMS ((bfd *));
72 static bfd_boolean mips_elf_is_local_label_name
73 PARAMS ((bfd *, const char *));
74 static bfd_reloc_status_type mips16_jump_reloc
75 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
76 static bfd_reloc_status_type mips16_gprel_reloc
77 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
78 static bfd_reloc_status_type mips_elf_final_gp
79 PARAMS ((bfd *, asymbol *, bfd_boolean, char **, bfd_vma *));
80 static bfd_boolean mips_elf_assign_gp
81 PARAMS ((bfd *, bfd_vma *));
82 static bfd_boolean elf32_mips_grok_prstatus
83 PARAMS ((bfd *, Elf_Internal_Note *));
84 static bfd_boolean elf32_mips_grok_psinfo
85 PARAMS ((bfd *, Elf_Internal_Note *));
86 static irix_compat_t elf32_mips_irix_compat
87 PARAMS ((bfd *));
88
89 extern const bfd_target bfd_elf32_bigmips_vec;
90 extern const bfd_target bfd_elf32_littlemips_vec;
91
92 /* Nonzero if ABFD is using the N32 ABI. */
93 #define ABI_N32_P(abfd) \
94 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
95
96 /* Whether we are trying to be compatible with IRIX at all. */
97 #define SGI_COMPAT(abfd) \
98 (elf32_mips_irix_compat (abfd) != ict_none)
99
100 /* The number of local .got entries we reserve. */
101 #define MIPS_RESERVED_GOTNO (2)
102
103 /* In case we're on a 32-bit machine, construct a 64-bit "-1" value
104 from smaller values. Start with zero, widen, *then* decrement. */
105 #define MINUS_ONE (((bfd_vma)0) - 1)
106
107 /* The relocation table used for SHT_REL sections. */
108
109 static reloc_howto_type elf_mips_howto_table_rel[] =
110 {
111 /* No relocation. */
112 HOWTO (R_MIPS_NONE, /* type */
113 0, /* rightshift */
114 0, /* size (0 = byte, 1 = short, 2 = long) */
115 0, /* bitsize */
116 FALSE, /* pc_relative */
117 0, /* bitpos */
118 complain_overflow_dont, /* complain_on_overflow */
119 bfd_elf_generic_reloc, /* special_function */
120 "R_MIPS_NONE", /* name */
121 FALSE, /* partial_inplace */
122 0, /* src_mask */
123 0, /* dst_mask */
124 FALSE), /* pcrel_offset */
125
126 /* 16 bit relocation. */
127 HOWTO (R_MIPS_16, /* type */
128 0, /* rightshift */
129 2, /* size (0 = byte, 1 = short, 2 = long) */
130 16, /* bitsize */
131 FALSE, /* pc_relative */
132 0, /* bitpos */
133 complain_overflow_signed, /* complain_on_overflow */
134 bfd_elf_generic_reloc, /* special_function */
135 "R_MIPS_16", /* name */
136 TRUE, /* partial_inplace */
137 0x0000ffff, /* src_mask */
138 0x0000ffff, /* dst_mask */
139 FALSE), /* pcrel_offset */
140
141 /* 32 bit relocation. */
142 HOWTO (R_MIPS_32, /* type */
143 0, /* rightshift */
144 2, /* size (0 = byte, 1 = short, 2 = long) */
145 32, /* bitsize */
146 FALSE, /* pc_relative */
147 0, /* bitpos */
148 complain_overflow_dont, /* complain_on_overflow */
149 bfd_elf_generic_reloc, /* special_function */
150 "R_MIPS_32", /* name */
151 TRUE, /* partial_inplace */
152 0xffffffff, /* src_mask */
153 0xffffffff, /* dst_mask */
154 FALSE), /* pcrel_offset */
155
156 /* 32 bit symbol relative relocation. */
157 HOWTO (R_MIPS_REL32, /* type */
158 0, /* rightshift */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
160 32, /* bitsize */
161 FALSE, /* pc_relative */
162 0, /* bitpos */
163 complain_overflow_dont, /* complain_on_overflow */
164 bfd_elf_generic_reloc, /* special_function */
165 "R_MIPS_REL32", /* name */
166 TRUE, /* partial_inplace */
167 0xffffffff, /* src_mask */
168 0xffffffff, /* dst_mask */
169 FALSE), /* pcrel_offset */
170
171 /* 26 bit jump address. */
172 HOWTO (R_MIPS_26, /* type */
173 2, /* rightshift */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
175 26, /* bitsize */
176 FALSE, /* pc_relative */
177 0, /* bitpos */
178 complain_overflow_dont, /* complain_on_overflow */
179 /* This needs complex overflow
180 detection, because the upper four
181 bits must match the PC + 4. */
182 bfd_elf_generic_reloc, /* special_function */
183 "R_MIPS_26", /* name */
184 TRUE, /* partial_inplace */
185 0x03ffffff, /* src_mask */
186 0x03ffffff, /* dst_mask */
187 FALSE), /* pcrel_offset */
188
189 /* High 16 bits of symbol value. */
190 HOWTO (R_MIPS_HI16, /* type */
191 0, /* rightshift */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
193 16, /* bitsize */
194 FALSE, /* pc_relative */
195 0, /* bitpos */
196 complain_overflow_dont, /* complain_on_overflow */
197 mips_elf_hi16_reloc, /* special_function */
198 "R_MIPS_HI16", /* name */
199 TRUE, /* partial_inplace */
200 0x0000ffff, /* src_mask */
201 0x0000ffff, /* dst_mask */
202 FALSE), /* pcrel_offset */
203
204 /* Low 16 bits of symbol value. */
205 HOWTO (R_MIPS_LO16, /* type */
206 0, /* rightshift */
207 2, /* size (0 = byte, 1 = short, 2 = long) */
208 16, /* bitsize */
209 FALSE, /* pc_relative */
210 0, /* bitpos */
211 complain_overflow_dont, /* complain_on_overflow */
212 mips_elf_lo16_reloc, /* special_function */
213 "R_MIPS_LO16", /* name */
214 TRUE, /* partial_inplace */
215 0x0000ffff, /* src_mask */
216 0x0000ffff, /* dst_mask */
217 FALSE), /* pcrel_offset */
218
219 /* GP relative reference. */
220 HOWTO (R_MIPS_GPREL16, /* type */
221 0, /* rightshift */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
223 16, /* bitsize */
224 FALSE, /* pc_relative */
225 0, /* bitpos */
226 complain_overflow_signed, /* complain_on_overflow */
227 _bfd_mips_elf32_gprel16_reloc, /* special_function */
228 "R_MIPS_GPREL16", /* name */
229 TRUE, /* partial_inplace */
230 0x0000ffff, /* src_mask */
231 0x0000ffff, /* dst_mask */
232 FALSE), /* pcrel_offset */
233
234 /* Reference to literal section. */
235 HOWTO (R_MIPS_LITERAL, /* type */
236 0, /* rightshift */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
238 16, /* bitsize */
239 FALSE, /* pc_relative */
240 0, /* bitpos */
241 complain_overflow_signed, /* complain_on_overflow */
242 _bfd_mips_elf32_gprel16_reloc, /* special_function */
243 "R_MIPS_LITERAL", /* name */
244 TRUE, /* partial_inplace */
245 0x0000ffff, /* src_mask */
246 0x0000ffff, /* dst_mask */
247 FALSE), /* pcrel_offset */
248
249 /* Reference to global offset table. */
250 HOWTO (R_MIPS_GOT16, /* type */
251 0, /* rightshift */
252 2, /* size (0 = byte, 1 = short, 2 = long) */
253 16, /* bitsize */
254 FALSE, /* pc_relative */
255 0, /* bitpos */
256 complain_overflow_signed, /* complain_on_overflow */
257 mips_elf_got16_reloc, /* special_function */
258 "R_MIPS_GOT16", /* name */
259 TRUE, /* partial_inplace */
260 0x0000ffff, /* src_mask */
261 0x0000ffff, /* dst_mask */
262 FALSE), /* pcrel_offset */
263
264 /* 16 bit PC relative reference. Note that the ABI document has a typo
265 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
266 We do the right thing here. */
267 HOWTO (R_MIPS_PC16, /* type */
268 2, /* rightshift */
269 2, /* size (0 = byte, 1 = short, 2 = long) */
270 16, /* bitsize */
271 TRUE, /* pc_relative */
272 0, /* bitpos */
273 complain_overflow_signed, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_MIPS_PC16", /* name */
276 TRUE, /* partial_inplace */
277 0x0000ffff, /* src_mask */
278 0x0000ffff, /* dst_mask */
279 TRUE), /* pcrel_offset */
280
281 /* 16 bit call through global offset table. */
282 HOWTO (R_MIPS_CALL16, /* type */
283 0, /* rightshift */
284 2, /* size (0 = byte, 1 = short, 2 = long) */
285 16, /* bitsize */
286 FALSE, /* pc_relative */
287 0, /* bitpos */
288 complain_overflow_signed, /* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_MIPS_CALL16", /* name */
291 TRUE, /* partial_inplace */
292 0x0000ffff, /* src_mask */
293 0x0000ffff, /* dst_mask */
294 FALSE), /* pcrel_offset */
295
296 /* 32 bit GP relative reference. */
297 HOWTO (R_MIPS_GPREL32, /* type */
298 0, /* rightshift */
299 2, /* size (0 = byte, 1 = short, 2 = long) */
300 32, /* bitsize */
301 FALSE, /* pc_relative */
302 0, /* bitpos */
303 complain_overflow_dont, /* complain_on_overflow */
304 mips_elf_gprel32_reloc, /* special_function */
305 "R_MIPS_GPREL32", /* name */
306 TRUE, /* partial_inplace */
307 0xffffffff, /* src_mask */
308 0xffffffff, /* dst_mask */
309 FALSE), /* pcrel_offset */
310
311 /* The remaining relocs are defined on Irix 5, although they are
312 not defined by the ABI. */
313 EMPTY_HOWTO (13),
314 EMPTY_HOWTO (14),
315 EMPTY_HOWTO (15),
316
317 /* A 5 bit shift field. */
318 HOWTO (R_MIPS_SHIFT5, /* type */
319 0, /* rightshift */
320 2, /* size (0 = byte, 1 = short, 2 = long) */
321 5, /* bitsize */
322 FALSE, /* pc_relative */
323 6, /* bitpos */
324 complain_overflow_bitfield, /* complain_on_overflow */
325 bfd_elf_generic_reloc, /* special_function */
326 "R_MIPS_SHIFT5", /* name */
327 TRUE, /* partial_inplace */
328 0x000007c0, /* src_mask */
329 0x000007c0, /* dst_mask */
330 FALSE), /* pcrel_offset */
331
332 /* A 6 bit shift field. */
333 /* FIXME: This is not handled correctly; a special function is
334 needed to put the most significant bit in the right place. */
335 HOWTO (R_MIPS_SHIFT6, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 6, /* bitsize */
339 FALSE, /* pc_relative */
340 6, /* bitpos */
341 complain_overflow_bitfield, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_MIPS_SHIFT6", /* name */
344 TRUE, /* partial_inplace */
345 0x000007c4, /* src_mask */
346 0x000007c4, /* dst_mask */
347 FALSE), /* pcrel_offset */
348
349 /* A 64 bit relocation. */
350 HOWTO (R_MIPS_64, /* type */
351 0, /* rightshift */
352 4, /* size (0 = byte, 1 = short, 2 = long) */
353 64, /* bitsize */
354 FALSE, /* pc_relative */
355 0, /* bitpos */
356 complain_overflow_dont, /* complain_on_overflow */
357 mips32_64bit_reloc, /* special_function */
358 "R_MIPS_64", /* name */
359 TRUE, /* partial_inplace */
360 MINUS_ONE, /* src_mask */
361 MINUS_ONE, /* dst_mask */
362 FALSE), /* pcrel_offset */
363
364 /* Displacement in the global offset table. */
365 HOWTO (R_MIPS_GOT_DISP, /* type */
366 0, /* rightshift */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
368 16, /* bitsize */
369 FALSE, /* pc_relative */
370 0, /* bitpos */
371 complain_overflow_signed, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_MIPS_GOT_DISP", /* name */
374 TRUE, /* partial_inplace */
375 0x0000ffff, /* src_mask */
376 0x0000ffff, /* dst_mask */
377 FALSE), /* pcrel_offset */
378
379 /* Displacement to page pointer in the global offset table. */
380 HOWTO (R_MIPS_GOT_PAGE, /* type */
381 0, /* rightshift */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
383 16, /* bitsize */
384 FALSE, /* pc_relative */
385 0, /* bitpos */
386 complain_overflow_signed, /* complain_on_overflow */
387 bfd_elf_generic_reloc, /* special_function */
388 "R_MIPS_GOT_PAGE", /* name */
389 TRUE, /* partial_inplace */
390 0x0000ffff, /* src_mask */
391 0x0000ffff, /* dst_mask */
392 FALSE), /* pcrel_offset */
393
394 /* Offset from page pointer in the global offset table. */
395 HOWTO (R_MIPS_GOT_OFST, /* type */
396 0, /* rightshift */
397 2, /* size (0 = byte, 1 = short, 2 = long) */
398 16, /* bitsize */
399 FALSE, /* pc_relative */
400 0, /* bitpos */
401 complain_overflow_signed, /* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_MIPS_GOT_OFST", /* name */
404 TRUE, /* partial_inplace */
405 0x0000ffff, /* src_mask */
406 0x0000ffff, /* dst_mask */
407 FALSE), /* pcrel_offset */
408
409 /* High 16 bits of displacement in global offset table. */
410 HOWTO (R_MIPS_GOT_HI16, /* type */
411 0, /* rightshift */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
413 16, /* bitsize */
414 FALSE, /* pc_relative */
415 0, /* bitpos */
416 complain_overflow_dont, /* complain_on_overflow */
417 bfd_elf_generic_reloc, /* special_function */
418 "R_MIPS_GOT_HI16", /* name */
419 TRUE, /* partial_inplace */
420 0x0000ffff, /* src_mask */
421 0x0000ffff, /* dst_mask */
422 FALSE), /* pcrel_offset */
423
424 /* Low 16 bits of displacement in global offset table. */
425 HOWTO (R_MIPS_GOT_LO16, /* type */
426 0, /* rightshift */
427 2, /* size (0 = byte, 1 = short, 2 = long) */
428 16, /* bitsize */
429 FALSE, /* pc_relative */
430 0, /* bitpos */
431 complain_overflow_dont, /* complain_on_overflow */
432 bfd_elf_generic_reloc, /* special_function */
433 "R_MIPS_GOT_LO16", /* name */
434 TRUE, /* partial_inplace */
435 0x0000ffff, /* src_mask */
436 0x0000ffff, /* dst_mask */
437 FALSE), /* pcrel_offset */
438
439 /* 64 bit subtraction. Used in the N32 ABI. */
440 HOWTO (R_MIPS_SUB, /* type */
441 0, /* rightshift */
442 4, /* size (0 = byte, 1 = short, 2 = long) */
443 64, /* bitsize */
444 FALSE, /* pc_relative */
445 0, /* bitpos */
446 complain_overflow_dont, /* complain_on_overflow */
447 bfd_elf_generic_reloc, /* special_function */
448 "R_MIPS_SUB", /* name */
449 TRUE, /* partial_inplace */
450 MINUS_ONE, /* src_mask */
451 MINUS_ONE, /* dst_mask */
452 FALSE), /* pcrel_offset */
453
454 /* Used to cause the linker to insert and delete instructions? */
455 EMPTY_HOWTO (R_MIPS_INSERT_A),
456 EMPTY_HOWTO (R_MIPS_INSERT_B),
457 EMPTY_HOWTO (R_MIPS_DELETE),
458
459 /* Get the higher value of a 64 bit addend. */
460 HOWTO (R_MIPS_HIGHER, /* type */
461 0, /* rightshift */
462 2, /* size (0 = byte, 1 = short, 2 = long) */
463 16, /* bitsize */
464 FALSE, /* pc_relative */
465 0, /* bitpos */
466 complain_overflow_dont, /* complain_on_overflow */
467 bfd_elf_generic_reloc, /* special_function */
468 "R_MIPS_HIGHER", /* name */
469 TRUE, /* partial_inplace */
470 0x0000ffff, /* src_mask */
471 0x0000ffff, /* dst_mask */
472 FALSE), /* pcrel_offset */
473
474 /* Get the highest value of a 64 bit addend. */
475 HOWTO (R_MIPS_HIGHEST, /* type */
476 0, /* rightshift */
477 2, /* size (0 = byte, 1 = short, 2 = long) */
478 16, /* bitsize */
479 FALSE, /* pc_relative */
480 0, /* bitpos */
481 complain_overflow_dont, /* complain_on_overflow */
482 bfd_elf_generic_reloc, /* special_function */
483 "R_MIPS_HIGHEST", /* name */
484 TRUE, /* partial_inplace */
485 0x0000ffff, /* src_mask */
486 0x0000ffff, /* dst_mask */
487 FALSE), /* pcrel_offset */
488
489 /* High 16 bits of displacement in global offset table. */
490 HOWTO (R_MIPS_CALL_HI16, /* type */
491 0, /* rightshift */
492 2, /* size (0 = byte, 1 = short, 2 = long) */
493 16, /* bitsize */
494 FALSE, /* pc_relative */
495 0, /* bitpos */
496 complain_overflow_dont, /* complain_on_overflow */
497 bfd_elf_generic_reloc, /* special_function */
498 "R_MIPS_CALL_HI16", /* name */
499 TRUE, /* partial_inplace */
500 0x0000ffff, /* src_mask */
501 0x0000ffff, /* dst_mask */
502 FALSE), /* pcrel_offset */
503
504 /* Low 16 bits of displacement in global offset table. */
505 HOWTO (R_MIPS_CALL_LO16, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 16, /* bitsize */
509 FALSE, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_dont, /* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
513 "R_MIPS_CALL_LO16", /* name */
514 TRUE, /* partial_inplace */
515 0x0000ffff, /* src_mask */
516 0x0000ffff, /* dst_mask */
517 FALSE), /* pcrel_offset */
518
519 /* Section displacement. */
520 HOWTO (R_MIPS_SCN_DISP, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 32, /* bitsize */
524 FALSE, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_dont, /* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_MIPS_SCN_DISP", /* name */
529 TRUE, /* partial_inplace */
530 0xffffffff, /* src_mask */
531 0xffffffff, /* dst_mask */
532 FALSE), /* pcrel_offset */
533
534 EMPTY_HOWTO (R_MIPS_REL16),
535 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
536 EMPTY_HOWTO (R_MIPS_PJUMP),
537 EMPTY_HOWTO (R_MIPS_RELGOT),
538
539 /* Protected jump conversion. This is an optimization hint. No
540 relocation is required for correctness. */
541 HOWTO (R_MIPS_JALR, /* type */
542 0, /* rightshift */
543 2, /* size (0 = byte, 1 = short, 2 = long) */
544 32, /* bitsize */
545 FALSE, /* pc_relative */
546 0, /* bitpos */
547 complain_overflow_dont, /* complain_on_overflow */
548 bfd_elf_generic_reloc, /* special_function */
549 "R_MIPS_JALR", /* name */
550 FALSE, /* partial_inplace */
551 0x00000000, /* src_mask */
552 0x00000000, /* dst_mask */
553 FALSE), /* pcrel_offset */
554 };
555
556 /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
557 is a hack to make the linker think that we need 64 bit values. */
558 static reloc_howto_type elf_mips_ctor64_howto =
559 HOWTO (R_MIPS_64, /* type */
560 0, /* rightshift */
561 4, /* size (0 = byte, 1 = short, 2 = long) */
562 32, /* bitsize */
563 FALSE, /* pc_relative */
564 0, /* bitpos */
565 complain_overflow_signed, /* complain_on_overflow */
566 mips32_64bit_reloc, /* special_function */
567 "R_MIPS_64", /* name */
568 TRUE, /* partial_inplace */
569 0xffffffff, /* src_mask */
570 0xffffffff, /* dst_mask */
571 FALSE); /* pcrel_offset */
572
573 /* The reloc used for the mips16 jump instruction. */
574 static reloc_howto_type elf_mips16_jump_howto =
575 HOWTO (R_MIPS16_26, /* type */
576 2, /* rightshift */
577 2, /* size (0 = byte, 1 = short, 2 = long) */
578 26, /* bitsize */
579 FALSE, /* pc_relative */
580 0, /* bitpos */
581 complain_overflow_dont, /* complain_on_overflow */
582 /* This needs complex overflow
583 detection, because the upper four
584 bits must match the PC. */
585 mips16_jump_reloc, /* special_function */
586 "R_MIPS16_26", /* name */
587 TRUE, /* partial_inplace */
588 0x3ffffff, /* src_mask */
589 0x3ffffff, /* dst_mask */
590 FALSE); /* pcrel_offset */
591
592 /* The reloc used for the mips16 gprel instruction. */
593 static reloc_howto_type elf_mips16_gprel_howto =
594 HOWTO (R_MIPS16_GPREL, /* type */
595 0, /* rightshift */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
597 16, /* bitsize */
598 FALSE, /* pc_relative */
599 0, /* bitpos */
600 complain_overflow_signed, /* complain_on_overflow */
601 mips16_gprel_reloc, /* special_function */
602 "R_MIPS16_GPREL", /* name */
603 TRUE, /* partial_inplace */
604 0x07ff001f, /* src_mask */
605 0x07ff001f, /* dst_mask */
606 FALSE); /* pcrel_offset */
607
608 /* GNU extensions for embedded-pic. */
609 /* High 16 bits of symbol value, pc-relative. */
610 static reloc_howto_type elf_mips_gnu_rel_hi16 =
611 HOWTO (R_MIPS_GNU_REL_HI16, /* type */
612 0, /* rightshift */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
614 16, /* bitsize */
615 TRUE, /* pc_relative */
616 0, /* bitpos */
617 complain_overflow_dont, /* complain_on_overflow */
618 mips_elf_hi16_reloc, /* special_function */
619 "R_MIPS_GNU_REL_HI16", /* name */
620 TRUE, /* partial_inplace */
621 0xffff, /* src_mask */
622 0xffff, /* dst_mask */
623 TRUE); /* pcrel_offset */
624
625 /* Low 16 bits of symbol value, pc-relative. */
626 static reloc_howto_type elf_mips_gnu_rel_lo16 =
627 HOWTO (R_MIPS_GNU_REL_LO16, /* type */
628 0, /* rightshift */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
630 16, /* bitsize */
631 TRUE, /* pc_relative */
632 0, /* bitpos */
633 complain_overflow_dont, /* complain_on_overflow */
634 mips_elf_lo16_reloc, /* special_function */
635 "R_MIPS_GNU_REL_LO16", /* name */
636 TRUE, /* partial_inplace */
637 0xffff, /* src_mask */
638 0xffff, /* dst_mask */
639 TRUE); /* pcrel_offset */
640
641 /* 16 bit offset for pc-relative branches. */
642 static reloc_howto_type elf_mips_gnu_rel16_s2 =
643 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
644 2, /* rightshift */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
646 16, /* bitsize */
647 TRUE, /* pc_relative */
648 0, /* bitpos */
649 complain_overflow_signed, /* complain_on_overflow */
650 bfd_elf_generic_reloc, /* special_function */
651 "R_MIPS_GNU_REL16_S2", /* name */
652 TRUE, /* partial_inplace */
653 0xffff, /* src_mask */
654 0xffff, /* dst_mask */
655 TRUE); /* pcrel_offset */
656
657 /* 64 bit pc-relative. */
658 static reloc_howto_type elf_mips_gnu_pcrel64 =
659 HOWTO (R_MIPS_PC64, /* type */
660 0, /* rightshift */
661 4, /* size (0 = byte, 1 = short, 2 = long) */
662 64, /* bitsize */
663 TRUE, /* pc_relative */
664 0, /* bitpos */
665 complain_overflow_signed, /* complain_on_overflow */
666 bfd_elf_generic_reloc, /* special_function */
667 "R_MIPS_PC64", /* name */
668 TRUE, /* partial_inplace */
669 MINUS_ONE, /* src_mask */
670 MINUS_ONE, /* dst_mask */
671 TRUE); /* pcrel_offset */
672
673 /* 32 bit pc-relative. */
674 static reloc_howto_type elf_mips_gnu_pcrel32 =
675 HOWTO (R_MIPS_PC32, /* type */
676 0, /* rightshift */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
678 32, /* bitsize */
679 TRUE, /* pc_relative */
680 0, /* bitpos */
681 complain_overflow_signed, /* complain_on_overflow */
682 bfd_elf_generic_reloc, /* special_function */
683 "R_MIPS_PC32", /* name */
684 TRUE, /* partial_inplace */
685 0xffffffff, /* src_mask */
686 0xffffffff, /* dst_mask */
687 TRUE); /* pcrel_offset */
688
689 /* GNU extension to record C++ vtable hierarchy */
690 static reloc_howto_type elf_mips_gnu_vtinherit_howto =
691 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
692 0, /* rightshift */
693 2, /* size (0 = byte, 1 = short, 2 = long) */
694 0, /* bitsize */
695 FALSE, /* pc_relative */
696 0, /* bitpos */
697 complain_overflow_dont, /* complain_on_overflow */
698 NULL, /* special_function */
699 "R_MIPS_GNU_VTINHERIT", /* name */
700 FALSE, /* partial_inplace */
701 0, /* src_mask */
702 0, /* dst_mask */
703 FALSE); /* pcrel_offset */
704
705 /* GNU extension to record C++ vtable member usage */
706 static reloc_howto_type elf_mips_gnu_vtentry_howto =
707 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
708 0, /* rightshift */
709 2, /* size (0 = byte, 1 = short, 2 = long) */
710 0, /* bitsize */
711 FALSE, /* pc_relative */
712 0, /* bitpos */
713 complain_overflow_dont, /* complain_on_overflow */
714 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
715 "R_MIPS_GNU_VTENTRY", /* name */
716 FALSE, /* partial_inplace */
717 0, /* src_mask */
718 0, /* dst_mask */
719 FALSE); /* pcrel_offset */
720
721 /* Do a R_MIPS_HI16 relocation. This has to be done in combination
722 with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to
723 the HI16. Here we just save the information we need; we do the
724 actual relocation when we see the LO16.
725
726 MIPS ELF requires that the LO16 immediately follow the HI16. As a
727 GNU extension, for non-pc-relative relocations, we permit an
728 arbitrary number of HI16 relocs to be associated with a single LO16
729 reloc. This extension permits gcc to output the HI and LO relocs
730 itself.
731
732 This cannot be done for PC-relative relocations because both the HI16
733 and LO16 parts of the relocations must be done relative to the LO16
734 part, and there can be carry to or borrow from the HI16 part. */
735
736 struct mips_hi16
737 {
738 struct mips_hi16 *next;
739 bfd_byte *addr;
740 bfd_vma addend;
741 };
742
743 /* FIXME: This should not be a static variable. */
744
745 static struct mips_hi16 *mips_hi16_list;
746
747 static bfd_reloc_status_type
748 mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section,
749 output_bfd, error_message)
750 bfd *abfd ATTRIBUTE_UNUSED;
751 arelent *reloc_entry;
752 asymbol *symbol;
753 PTR data;
754 asection *input_section;
755 bfd *output_bfd;
756 char **error_message;
757 {
758 bfd_reloc_status_type ret;
759 bfd_vma relocation;
760 struct mips_hi16 *n;
761
762 /* If we're relocating, and this is an external symbol, we don't want
763 to change anything. */
764 if (output_bfd != (bfd *) NULL
765 && (symbol->flags & BSF_SECTION_SYM) == 0
766 && reloc_entry->addend == 0)
767 {
768 reloc_entry->address += input_section->output_offset;
769 return bfd_reloc_ok;
770 }
771
772 ret = bfd_reloc_ok;
773
774 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
775 {
776 bfd_boolean relocateable;
777 bfd_vma gp;
778
779 if (ret == bfd_reloc_undefined)
780 abort ();
781
782 if (output_bfd != NULL)
783 relocateable = TRUE;
784 else
785 {
786 relocateable = FALSE;
787 output_bfd = symbol->section->output_section->owner;
788 }
789
790 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
791 error_message, &gp);
792 if (ret != bfd_reloc_ok)
793 return ret;
794
795 relocation = gp - reloc_entry->address;
796 }
797 else
798 {
799 if (bfd_is_und_section (symbol->section)
800 && output_bfd == (bfd *) NULL)
801 ret = bfd_reloc_undefined;
802
803 if (bfd_is_com_section (symbol->section))
804 relocation = 0;
805 else
806 relocation = symbol->value;
807 }
808
809 relocation += symbol->section->output_section->vma;
810 relocation += symbol->section->output_offset;
811 relocation += reloc_entry->addend;
812
813 if (reloc_entry->address > input_section->_cooked_size)
814 return bfd_reloc_outofrange;
815
816 /* Save the information, and let LO16 do the actual relocation. */
817 n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n);
818 if (n == NULL)
819 return bfd_reloc_outofrange;
820 n->addr = (bfd_byte *) data + reloc_entry->address;
821 n->addend = relocation;
822 n->next = mips_hi16_list;
823 mips_hi16_list = n;
824
825 if (output_bfd != (bfd *) NULL)
826 reloc_entry->address += input_section->output_offset;
827
828 return ret;
829 }
830
831 /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit
832 inplace relocation; this function exists in order to do the
833 R_MIPS_HI16 relocation described above. */
834
835 static bfd_reloc_status_type
836 mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section,
837 output_bfd, error_message)
838 bfd *abfd;
839 arelent *reloc_entry;
840 asymbol *symbol;
841 PTR data;
842 asection *input_section;
843 bfd *output_bfd;
844 char **error_message;
845 {
846 arelent gp_disp_relent;
847
848 if (mips_hi16_list != NULL)
849 {
850 struct mips_hi16 *l;
851
852 l = mips_hi16_list;
853 while (l != NULL)
854 {
855 unsigned long insn;
856 unsigned long val;
857 unsigned long vallo;
858 struct mips_hi16 *next;
859
860 /* Do the HI16 relocation. Note that we actually don't need
861 to know anything about the LO16 itself, except where to
862 find the low 16 bits of the addend needed by the LO16. */
863 insn = bfd_get_32 (abfd, l->addr);
864 vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
865
866 /* The low order 16 bits are always treated as a signed
867 value. */
868 vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000;
869 val = ((insn & 0xffff) << 16) + vallo;
870 val += l->addend;
871
872 /* If PC-relative, we need to subtract out the address of the LO
873 half of the HI/LO. (The actual relocation is relative
874 to that instruction.) */
875 if (reloc_entry->howto->pc_relative)
876 val -= reloc_entry->address;
877
878 /* At this point, "val" has the value of the combined HI/LO
879 pair. If the low order 16 bits (which will be used for
880 the LO16 insn) are negative, then we will need an
881 adjustment for the high order 16 bits. */
882 val += 0x8000;
883 val = (val >> 16) & 0xffff;
884
885 insn &= ~ (bfd_vma) 0xffff;
886 insn |= val;
887 bfd_put_32 (abfd, (bfd_vma) insn, l->addr);
888
889 if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
890 {
891 gp_disp_relent = *reloc_entry;
892 reloc_entry = &gp_disp_relent;
893 reloc_entry->addend = l->addend;
894 }
895
896 next = l->next;
897 free (l);
898 l = next;
899 }
900
901 mips_hi16_list = NULL;
902 }
903 else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0)
904 {
905 bfd_reloc_status_type ret;
906 bfd_vma gp, relocation;
907
908 /* FIXME: Does this case ever occur? */
909
910 ret = mips_elf_final_gp (output_bfd, symbol, TRUE, error_message, &gp);
911 if (ret != bfd_reloc_ok)
912 return ret;
913
914 relocation = gp - reloc_entry->address;
915 relocation += symbol->section->output_section->vma;
916 relocation += symbol->section->output_offset;
917 relocation += reloc_entry->addend;
918
919 if (reloc_entry->address > input_section->_cooked_size)
920 return bfd_reloc_outofrange;
921
922 gp_disp_relent = *reloc_entry;
923 reloc_entry = &gp_disp_relent;
924 reloc_entry->addend = relocation - 4;
925 }
926
927 /* Now do the LO16 reloc in the usual way. */
928 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
929 input_section, output_bfd, error_message);
930 }
931
932 /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset
933 table used for PIC code. If the symbol is an external symbol, the
934 instruction is modified to contain the offset of the appropriate
935 entry in the global offset table. If the symbol is a section
936 symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit
937 addends are combined to form the real addend against the section
938 symbol; the GOT16 is modified to contain the offset of an entry in
939 the global offset table, and the LO16 is modified to offset it
940 appropriately. Thus an offset larger than 16 bits requires a
941 modified value in the global offset table.
942
943 This implementation suffices for the assembler, but the linker does
944 not yet know how to create global offset tables. */
945
946 static bfd_reloc_status_type
947 mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section,
948 output_bfd, error_message)
949 bfd *abfd;
950 arelent *reloc_entry;
951 asymbol *symbol;
952 PTR data;
953 asection *input_section;
954 bfd *output_bfd;
955 char **error_message;
956 {
957 /* If we're relocating, and this is an external symbol, we don't want
958 to change anything. */
959 if (output_bfd != (bfd *) NULL
960 && (symbol->flags & BSF_SECTION_SYM) == 0
961 && reloc_entry->addend == 0)
962 {
963 reloc_entry->address += input_section->output_offset;
964 return bfd_reloc_ok;
965 }
966
967 /* If we're relocating, and this is a local symbol, we can handle it
968 just like HI16. */
969 if (output_bfd != (bfd *) NULL
970 && (symbol->flags & BSF_SECTION_SYM) != 0)
971 return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data,
972 input_section, output_bfd, error_message);
973
974 abort ();
975 }
976
977 /* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
978 dangerous relocation. */
979
980 static bfd_boolean
981 mips_elf_assign_gp (output_bfd, pgp)
982 bfd *output_bfd;
983 bfd_vma *pgp;
984 {
985 unsigned int count;
986 asymbol **sym;
987 unsigned int i;
988
989 /* If we've already figured out what GP will be, just return it. */
990 *pgp = _bfd_get_gp_value (output_bfd);
991 if (*pgp)
992 return TRUE;
993
994 count = bfd_get_symcount (output_bfd);
995 sym = bfd_get_outsymbols (output_bfd);
996
997 /* The linker script will have created a symbol named `_gp' with the
998 appropriate value. */
999 if (sym == (asymbol **) NULL)
1000 i = count;
1001 else
1002 {
1003 for (i = 0; i < count; i++, sym++)
1004 {
1005 register const char *name;
1006
1007 name = bfd_asymbol_name (*sym);
1008 if (*name == '_' && strcmp (name, "_gp") == 0)
1009 {
1010 *pgp = bfd_asymbol_value (*sym);
1011 _bfd_set_gp_value (output_bfd, *pgp);
1012 break;
1013 }
1014 }
1015 }
1016
1017 if (i >= count)
1018 {
1019 /* Only get the error once. */
1020 *pgp = 4;
1021 _bfd_set_gp_value (output_bfd, *pgp);
1022 return FALSE;
1023 }
1024
1025 return TRUE;
1026 }
1027
1028 /* We have to figure out the gp value, so that we can adjust the
1029 symbol value correctly. We look up the symbol _gp in the output
1030 BFD. If we can't find it, we're stuck. We cache it in the ELF
1031 target data. We don't need to adjust the symbol value for an
1032 external symbol if we are producing relocateable output. */
1033
1034 static bfd_reloc_status_type
1035 mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp)
1036 bfd *output_bfd;
1037 asymbol *symbol;
1038 bfd_boolean relocateable;
1039 char **error_message;
1040 bfd_vma *pgp;
1041 {
1042 if (bfd_is_und_section (symbol->section)
1043 && ! relocateable)
1044 {
1045 *pgp = 0;
1046 return bfd_reloc_undefined;
1047 }
1048
1049 *pgp = _bfd_get_gp_value (output_bfd);
1050 if (*pgp == 0
1051 && (! relocateable
1052 || (symbol->flags & BSF_SECTION_SYM) != 0))
1053 {
1054 if (relocateable)
1055 {
1056 /* Make up a value. */
1057 *pgp = symbol->section->output_section->vma + 0x4000;
1058 _bfd_set_gp_value (output_bfd, *pgp);
1059 }
1060 else if (!mips_elf_assign_gp (output_bfd, pgp))
1061 {
1062 *error_message =
1063 (char *) _("GP relative relocation when _gp not defined");
1064 return bfd_reloc_dangerous;
1065 }
1066 }
1067
1068 return bfd_reloc_ok;
1069 }
1070
1071 /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
1072 become the offset from the gp register. This function also handles
1073 R_MIPS_LITERAL relocations, although those can be handled more
1074 cleverly because the entries in the .lit8 and .lit4 sections can be
1075 merged. */
1076
1077 bfd_reloc_status_type
1078 _bfd_mips_elf32_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section,
1079 output_bfd, error_message)
1080 bfd *abfd;
1081 arelent *reloc_entry;
1082 asymbol *symbol;
1083 PTR data;
1084 asection *input_section;
1085 bfd *output_bfd;
1086 char **error_message;
1087 {
1088 bfd_boolean relocateable;
1089 bfd_reloc_status_type ret;
1090 bfd_vma gp;
1091
1092 /* If we're relocating, and this is an external symbol with no
1093 addend, we don't want to change anything. We will only have an
1094 addend if this is a newly created reloc, not read from an ELF
1095 file. */
1096 if (output_bfd != (bfd *) NULL
1097 && (symbol->flags & BSF_SECTION_SYM) == 0
1098 && reloc_entry->addend == 0)
1099 {
1100 reloc_entry->address += input_section->output_offset;
1101 return bfd_reloc_ok;
1102 }
1103
1104 if (output_bfd != (bfd *) NULL)
1105 relocateable = TRUE;
1106 else
1107 {
1108 relocateable = FALSE;
1109 output_bfd = symbol->section->output_section->owner;
1110 }
1111
1112 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1113 &gp);
1114 if (ret != bfd_reloc_ok)
1115 return ret;
1116
1117 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1118 input_section, relocateable,
1119 data, gp);
1120 }
1121
1122 /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1123 become the offset from the gp register. */
1124
1125 static bfd_reloc_status_type gprel32_with_gp
1126 PARAMS ((bfd *, asymbol *, arelent *, asection *, bfd_boolean, PTR,
1127 bfd_vma));
1128
1129 static bfd_reloc_status_type
1130 mips_elf_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section,
1131 output_bfd, error_message)
1132 bfd *abfd;
1133 arelent *reloc_entry;
1134 asymbol *symbol;
1135 PTR data;
1136 asection *input_section;
1137 bfd *output_bfd;
1138 char **error_message;
1139 {
1140 bfd_boolean relocateable;
1141 bfd_reloc_status_type ret;
1142 bfd_vma gp;
1143
1144 /* If we're relocating, and this is an external symbol with no
1145 addend, we don't want to change anything. We will only have an
1146 addend if this is a newly created reloc, not read from an ELF
1147 file. */
1148 if (output_bfd != (bfd *) NULL
1149 && (symbol->flags & BSF_SECTION_SYM) == 0
1150 && reloc_entry->addend == 0)
1151 {
1152 *error_message = (char *)
1153 _("32bits gp relative relocation occurs for an external symbol");
1154 return bfd_reloc_outofrange;
1155 }
1156
1157 if (output_bfd != (bfd *) NULL)
1158 {
1159 relocateable = TRUE;
1160 gp = _bfd_get_gp_value (output_bfd);
1161 }
1162 else
1163 {
1164 relocateable = FALSE;
1165 output_bfd = symbol->section->output_section->owner;
1166
1167 ret = mips_elf_final_gp (output_bfd, symbol, relocateable,
1168 error_message, &gp);
1169 if (ret != bfd_reloc_ok)
1170 return ret;
1171 }
1172
1173 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1174 relocateable, data, gp);
1175 }
1176
1177 static bfd_reloc_status_type
1178 gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data,
1179 gp)
1180 bfd *abfd;
1181 asymbol *symbol;
1182 arelent *reloc_entry;
1183 asection *input_section;
1184 bfd_boolean relocateable;
1185 PTR data;
1186 bfd_vma gp;
1187 {
1188 bfd_vma relocation;
1189 unsigned long val;
1190
1191 if (bfd_is_com_section (symbol->section))
1192 relocation = 0;
1193 else
1194 relocation = symbol->value;
1195
1196 relocation += symbol->section->output_section->vma;
1197 relocation += symbol->section->output_offset;
1198
1199 if (reloc_entry->address > input_section->_cooked_size)
1200 return bfd_reloc_outofrange;
1201
1202 if (reloc_entry->howto->src_mask == 0)
1203 {
1204 /* This case arises with the 64-bit MIPS ELF ABI. */
1205 val = 0;
1206 }
1207 else
1208 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1209
1210 /* Set val to the offset into the section or symbol. */
1211 val += reloc_entry->addend;
1212
1213 /* Adjust val for the final section location and GP value. If we
1214 are producing relocateable output, we don't want to do this for
1215 an external symbol. */
1216 if (! relocateable
1217 || (symbol->flags & BSF_SECTION_SYM) != 0)
1218 val += relocation - gp;
1219
1220 bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address);
1221
1222 if (relocateable)
1223 reloc_entry->address += input_section->output_offset;
1224
1225 return bfd_reloc_ok;
1226 }
1227
1228 /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1229 generated when addresses are 64 bits. The upper 32 bits are a simple
1230 sign extension. */
1231
1232 static bfd_reloc_status_type
1233 mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section,
1234 output_bfd, error_message)
1235 bfd *abfd;
1236 arelent *reloc_entry;
1237 asymbol *symbol;
1238 PTR data;
1239 asection *input_section;
1240 bfd *output_bfd;
1241 char **error_message;
1242 {
1243 bfd_reloc_status_type r;
1244 arelent reloc32;
1245 unsigned long val;
1246 bfd_size_type addr;
1247
1248 r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1249 input_section, output_bfd, error_message);
1250 if (r != bfd_reloc_continue)
1251 return r;
1252
1253 /* Do a normal 32 bit relocation on the lower 32 bits. */
1254 reloc32 = *reloc_entry;
1255 if (bfd_big_endian (abfd))
1256 reloc32.address += 4;
1257 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1258 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1259 output_bfd, error_message);
1260
1261 /* Sign extend into the upper 32 bits. */
1262 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1263 if ((val & 0x80000000) != 0)
1264 val = 0xffffffff;
1265 else
1266 val = 0;
1267 addr = reloc_entry->address;
1268 if (bfd_little_endian (abfd))
1269 addr += 4;
1270 bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr);
1271
1272 return r;
1273 }
1274
1275 /* Handle a mips16 jump. */
1276
1277 static bfd_reloc_status_type
1278 mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section,
1279 output_bfd, error_message)
1280 bfd *abfd ATTRIBUTE_UNUSED;
1281 arelent *reloc_entry;
1282 asymbol *symbol;
1283 PTR data ATTRIBUTE_UNUSED;
1284 asection *input_section;
1285 bfd *output_bfd;
1286 char **error_message ATTRIBUTE_UNUSED;
1287 {
1288 if (output_bfd != (bfd *) NULL
1289 && (symbol->flags & BSF_SECTION_SYM) == 0
1290 && reloc_entry->addend == 0)
1291 {
1292 reloc_entry->address += input_section->output_offset;
1293 return bfd_reloc_ok;
1294 }
1295
1296 /* FIXME. */
1297 {
1298 static bfd_boolean warned;
1299
1300 if (! warned)
1301 (*_bfd_error_handler)
1302 (_("Linking mips16 objects into %s format is not supported"),
1303 bfd_get_target (input_section->output_section->owner));
1304 warned = TRUE;
1305 }
1306
1307 return bfd_reloc_undefined;
1308 }
1309
1310 /* Handle a mips16 GP relative reloc. */
1311
1312 static bfd_reloc_status_type
1313 mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section,
1314 output_bfd, error_message)
1315 bfd *abfd;
1316 arelent *reloc_entry;
1317 asymbol *symbol;
1318 PTR data;
1319 asection *input_section;
1320 bfd *output_bfd;
1321 char **error_message;
1322 {
1323 bfd_boolean relocateable;
1324 bfd_reloc_status_type ret;
1325 bfd_vma gp;
1326 unsigned short extend, insn;
1327 unsigned long final;
1328
1329 /* If we're relocating, and this is an external symbol with no
1330 addend, we don't want to change anything. We will only have an
1331 addend if this is a newly created reloc, not read from an ELF
1332 file. */
1333 if (output_bfd != NULL
1334 && (symbol->flags & BSF_SECTION_SYM) == 0
1335 && reloc_entry->addend == 0)
1336 {
1337 reloc_entry->address += input_section->output_offset;
1338 return bfd_reloc_ok;
1339 }
1340
1341 if (output_bfd != NULL)
1342 relocateable = TRUE;
1343 else
1344 {
1345 relocateable = FALSE;
1346 output_bfd = symbol->section->output_section->owner;
1347 }
1348
1349 ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message,
1350 &gp);
1351 if (ret != bfd_reloc_ok)
1352 return ret;
1353
1354 if (reloc_entry->address > input_section->_cooked_size)
1355 return bfd_reloc_outofrange;
1356
1357 /* Pick up the mips16 extend instruction and the real instruction. */
1358 extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address);
1359 insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2);
1360
1361 /* Stuff the current addend back as a 32 bit value, do the usual
1362 relocation, and then clean up. */
1363 bfd_put_32 (abfd,
1364 (bfd_vma) (((extend & 0x1f) << 11)
1365 | (extend & 0x7e0)
1366 | (insn & 0x1f)),
1367 (bfd_byte *) data + reloc_entry->address);
1368
1369 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1370 input_section, relocateable, data, gp);
1371
1372 final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
1373 bfd_put_16 (abfd,
1374 (bfd_vma) ((extend & 0xf800)
1375 | ((final >> 11) & 0x1f)
1376 | (final & 0x7e0)),
1377 (bfd_byte *) data + reloc_entry->address);
1378 bfd_put_16 (abfd,
1379 (bfd_vma) ((insn & 0xffe0)
1380 | (final & 0x1f)),
1381 (bfd_byte *) data + reloc_entry->address + 2);
1382
1383 return ret;
1384 }
1385
1386 /* A mapping from BFD reloc types to MIPS ELF reloc types. */
1387
1388 struct elf_reloc_map {
1389 bfd_reloc_code_real_type bfd_val;
1390 enum elf_mips_reloc_type elf_val;
1391 };
1392
1393 static const struct elf_reloc_map mips_reloc_map[] =
1394 {
1395 { BFD_RELOC_NONE, R_MIPS_NONE },
1396 { BFD_RELOC_16, R_MIPS_16 },
1397 { BFD_RELOC_32, R_MIPS_32 },
1398 /* There is no BFD reloc for R_MIPS_REL32. */
1399 { BFD_RELOC_64, R_MIPS_64 },
1400 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1401 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1402 { BFD_RELOC_LO16, R_MIPS_LO16 },
1403 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1404 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1405 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
1406 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
1407 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1408 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1409 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1410 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1411 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1412 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1413 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1414 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1415 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
1416 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP }
1417 };
1418
1419 /* Given a BFD reloc type, return a howto structure. */
1420
1421 static reloc_howto_type *
1422 bfd_elf32_bfd_reloc_type_lookup (abfd, code)
1423 bfd *abfd;
1424 bfd_reloc_code_real_type code;
1425 {
1426 unsigned int i;
1427 reloc_howto_type *howto_table = elf_mips_howto_table_rel;
1428
1429 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
1430 i++)
1431 {
1432 if (mips_reloc_map[i].bfd_val == code)
1433 return &howto_table[(int) mips_reloc_map[i].elf_val];
1434 }
1435
1436 switch (code)
1437 {
1438 default:
1439 bfd_set_error (bfd_error_bad_value);
1440 return NULL;
1441
1442 case BFD_RELOC_CTOR:
1443 /* We need to handle BFD_RELOC_CTOR specially.
1444 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
1445 size of addresses on this architecture. */
1446 if (bfd_arch_bits_per_address (abfd) == 32)
1447 return &howto_table[(int) R_MIPS_32];
1448 else
1449 return &elf_mips_ctor64_howto;
1450
1451 case BFD_RELOC_MIPS16_JMP:
1452 return &elf_mips16_jump_howto;
1453 case BFD_RELOC_MIPS16_GPREL:
1454 return &elf_mips16_gprel_howto;
1455 case BFD_RELOC_VTABLE_INHERIT:
1456 return &elf_mips_gnu_vtinherit_howto;
1457 case BFD_RELOC_VTABLE_ENTRY:
1458 return &elf_mips_gnu_vtentry_howto;
1459 case BFD_RELOC_PCREL_HI16_S:
1460 return &elf_mips_gnu_rel_hi16;
1461 case BFD_RELOC_PCREL_LO16:
1462 return &elf_mips_gnu_rel_lo16;
1463 case BFD_RELOC_MIPSEMB_16_PCREL_S2:
1464 return &elf_mips_gnu_rel16_s2;
1465 case BFD_RELOC_64_PCREL:
1466 return &elf_mips_gnu_pcrel64;
1467 case BFD_RELOC_32_PCREL:
1468 return &elf_mips_gnu_pcrel32;
1469 }
1470 }
1471
1472 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
1473
1474 static reloc_howto_type *
1475 mips_elf32_rtype_to_howto (r_type, rela_p)
1476 unsigned int r_type;
1477 bfd_boolean rela_p ATTRIBUTE_UNUSED;
1478 {
1479 switch (r_type)
1480 {
1481 case R_MIPS16_26:
1482 return &elf_mips16_jump_howto;
1483 case R_MIPS16_GPREL:
1484 return &elf_mips16_gprel_howto;
1485 case R_MIPS_GNU_VTINHERIT:
1486 return &elf_mips_gnu_vtinherit_howto;
1487 case R_MIPS_GNU_VTENTRY:
1488 return &elf_mips_gnu_vtentry_howto;
1489 case R_MIPS_GNU_REL_HI16:
1490 return &elf_mips_gnu_rel_hi16;
1491 case R_MIPS_GNU_REL_LO16:
1492 return &elf_mips_gnu_rel_lo16;
1493 case R_MIPS_GNU_REL16_S2:
1494 return &elf_mips_gnu_rel16_s2;
1495 case R_MIPS_PC64:
1496 return &elf_mips_gnu_pcrel64;
1497 case R_MIPS_PC32:
1498 return &elf_mips_gnu_pcrel32;
1499 default:
1500 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1501 return &elf_mips_howto_table_rel[r_type];
1502 }
1503 }
1504
1505 /* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
1506
1507 static void
1508 mips_info_to_howto_rel (abfd, cache_ptr, dst)
1509 bfd *abfd;
1510 arelent *cache_ptr;
1511 Elf_Internal_Rela *dst;
1512 {
1513 unsigned int r_type;
1514
1515 r_type = ELF32_R_TYPE (dst->r_info);
1516 cache_ptr->howto = mips_elf32_rtype_to_howto (r_type, FALSE);
1517
1518 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1519 value for the object file. We get the addend now, rather than
1520 when we do the relocation, because the symbol manipulations done
1521 by the linker may cause us to lose track of the input BFD. */
1522 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1523 && (r_type == (unsigned int) R_MIPS_GPREL16
1524 || r_type == (unsigned int) R_MIPS_LITERAL))
1525 cache_ptr->addend = elf_gp (abfd);
1526 }
1527
1528 /* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
1529
1530 static void
1531 mips_info_to_howto_rela (abfd, cache_ptr, dst)
1532 bfd *abfd;
1533 arelent *cache_ptr;
1534 Elf_Internal_Rela *dst;
1535 {
1536 mips_info_to_howto_rel (abfd, cache_ptr, dst);
1537
1538 /* If we ever need to do any extra processing with dst->r_addend
1539 (the field omitted in an Elf_Internal_Rel) we can do it here. */
1540 }
1541 \f
1542 /* Determine whether a symbol is global for the purposes of splitting
1543 the symbol table into global symbols and local symbols. At least
1544 on Irix 5, this split must be between section symbols and all other
1545 symbols. On most ELF targets the split is between static symbols
1546 and externally visible symbols. */
1547
1548 static bfd_boolean
1549 mips_elf_sym_is_global (abfd, sym)
1550 bfd *abfd ATTRIBUTE_UNUSED;
1551 asymbol *sym;
1552 {
1553 if (SGI_COMPAT (abfd))
1554 return (sym->flags & BSF_SECTION_SYM) == 0;
1555 else
1556 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1557 || bfd_is_und_section (bfd_get_section (sym))
1558 || bfd_is_com_section (bfd_get_section (sym)));
1559 }
1560 \f
1561 /* Set the right machine number for a MIPS ELF file. */
1562
1563 static bfd_boolean
1564 mips_elf32_object_p (abfd)
1565 bfd *abfd;
1566 {
1567 unsigned long mach;
1568
1569 /* Irix 5 and 6 are broken. Object file symbol tables are not always
1570 sorted correctly such that local symbols precede global symbols,
1571 and the sh_info field in the symbol table is not always right. */
1572 if (SGI_COMPAT (abfd))
1573 elf_bad_symtab (abfd) = TRUE;
1574
1575 if (ABI_N32_P (abfd))
1576 return FALSE;
1577
1578 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
1579 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
1580
1581 return TRUE;
1582 }
1583 \f
1584 /* MIPS ELF local labels start with '$', not 'L'. */
1585
1586 static bfd_boolean
1587 mips_elf_is_local_label_name (abfd, name)
1588 bfd *abfd;
1589 const char *name;
1590 {
1591 if (name[0] == '$')
1592 return TRUE;
1593
1594 /* On Irix 6, the labels go back to starting with '.', so we accept
1595 the generic ELF local label syntax as well. */
1596 return _bfd_elf_is_local_label_name (abfd, name);
1597 }
1598 \f
1599 /* Support for core dump NOTE sections. */
1600 static bfd_boolean
1601 elf32_mips_grok_prstatus (abfd, note)
1602 bfd *abfd;
1603 Elf_Internal_Note *note;
1604 {
1605 int offset;
1606 unsigned int raw_size;
1607
1608 switch (note->descsz)
1609 {
1610 default:
1611 return FALSE;
1612
1613 case 256: /* Linux/MIPS */
1614 /* pr_cursig */
1615 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1616
1617 /* pr_pid */
1618 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1619
1620 /* pr_reg */
1621 offset = 72;
1622 raw_size = 180;
1623
1624 break;
1625 }
1626
1627 /* Make a ".reg/999" section. */
1628 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1629 raw_size, note->descpos + offset);
1630 }
1631
1632 static bfd_boolean
1633 elf32_mips_grok_psinfo (abfd, note)
1634 bfd *abfd;
1635 Elf_Internal_Note *note;
1636 {
1637 switch (note->descsz)
1638 {
1639 default:
1640 return FALSE;
1641
1642 case 128: /* Linux/MIPS elf_prpsinfo */
1643 elf_tdata (abfd)->core_program
1644 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1645 elf_tdata (abfd)->core_command
1646 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1647 }
1648
1649 /* Note that for some reason, a spurious space is tacked
1650 onto the end of the args in some (at least one anyway)
1651 implementations, so strip it off if it exists. */
1652
1653 {
1654 char *command = elf_tdata (abfd)->core_command;
1655 int n = strlen (command);
1656
1657 if (0 < n && command[n - 1] == ' ')
1658 command[n - 1] = '\0';
1659 }
1660
1661 return TRUE;
1662 }
1663 \f
1664 /* Depending on the target vector we generate some version of Irix
1665 executables or "normal" MIPS ELF ABI executables. */
1666 static irix_compat_t
1667 elf32_mips_irix_compat (abfd)
1668 bfd *abfd;
1669 {
1670 if ((abfd->xvec == &bfd_elf32_bigmips_vec)
1671 || (abfd->xvec == &bfd_elf32_littlemips_vec))
1672 return ict_irix5;
1673 else
1674 return ict_none;
1675 }
1676 \f
1677 /* Given a data section and an in-memory embedded reloc section, store
1678 relocation information into the embedded reloc section which can be
1679 used at runtime to relocate the data section. This is called by the
1680 linker when the --embedded-relocs switch is used. This is called
1681 after the add_symbols entry point has been called for all the
1682 objects, and before the final_link entry point is called. */
1683
1684 bfd_boolean
1685 bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg)
1686 bfd *abfd;
1687 struct bfd_link_info *info;
1688 asection *datasec;
1689 asection *relsec;
1690 char **errmsg;
1691 {
1692 Elf_Internal_Shdr *symtab_hdr;
1693 Elf_Internal_Sym *isymbuf = NULL;
1694 Elf_Internal_Rela *internal_relocs = NULL;
1695 Elf_Internal_Rela *irel, *irelend;
1696 bfd_byte *p;
1697
1698 BFD_ASSERT (! info->relocateable);
1699
1700 *errmsg = NULL;
1701
1702 if (datasec->reloc_count == 0)
1703 return TRUE;
1704
1705 /* Read this BFD's symbols if we haven't done so already, or get the cached
1706 copy if it exists. */
1707 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1708 if (symtab_hdr->sh_info != 0)
1709 {
1710 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
1711 if (isymbuf == NULL)
1712 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
1713 symtab_hdr->sh_info, 0,
1714 NULL, NULL, NULL);
1715 if (isymbuf == NULL)
1716 goto error_return;
1717 }
1718
1719 /* Get a copy of the native relocations. */
1720 internal_relocs = (_bfd_elf32_link_read_relocs
1721 (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1722 info->keep_memory));
1723 if (internal_relocs == NULL)
1724 goto error_return;
1725
1726 relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12);
1727 if (relsec->contents == NULL)
1728 goto error_return;
1729
1730 p = relsec->contents;
1731
1732 irelend = internal_relocs + datasec->reloc_count;
1733
1734 for (irel = internal_relocs; irel < irelend; irel++, p += 12)
1735 {
1736 asection *targetsec;
1737
1738 /* We are going to write a four byte longword into the runtime
1739 reloc section. The longword will be the address in the data
1740 section which must be relocated. It is followed by the name
1741 of the target section NUL-padded or truncated to 8
1742 characters. */
1743
1744 /* We can only relocate absolute longword relocs at run time. */
1745 if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) &&
1746 (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64))
1747 {
1748 *errmsg = _("unsupported reloc type");
1749 bfd_set_error (bfd_error_bad_value);
1750 goto error_return;
1751 }
1752 /* Get the target section referred to by the reloc. */
1753 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
1754 {
1755 Elf_Internal_Sym *isym;
1756
1757 /* A local symbol. */
1758 isym = isymbuf + ELF32_R_SYM (irel->r_info);
1759 targetsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
1760 }
1761 else
1762 {
1763 unsigned long indx;
1764 struct elf_link_hash_entry *h;
1765
1766 /* An external symbol. */
1767 indx = ELF32_R_SYM (irel->r_info);
1768 h = elf_sym_hashes (abfd)[indx];
1769 targetsec = NULL;
1770 /*
1771 For some reason, in certain programs, the symbol will
1772 not be in the hash table. It seems to happen when you
1773 declare a static table of pointers to const external structures.
1774 In this case, the relocs are relative to data, not
1775 text, so just treating it like an undefined link
1776 should be sufficient. */
1777 BFD_ASSERT(h != NULL);
1778 if (h->root.type == bfd_link_hash_defined
1779 || h->root.type == bfd_link_hash_defweak)
1780 targetsec = h->root.u.def.section;
1781 }
1782
1783
1784 /*
1785 Set the low bit of the relocation offset if it's a MIPS64 reloc.
1786 Relocations will always be on (at least) 32-bit boundaries. */
1787
1788 bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) +
1789 ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)),
1790 p);
1791 memset (p + 4, 0, 8);
1792 if (targetsec != NULL)
1793 strncpy (p + 4, targetsec->output_section->name, 8);
1794 }
1795
1796 if (internal_relocs != NULL
1797 && elf_section_data (datasec)->relocs != internal_relocs)
1798 free (internal_relocs);
1799 if (isymbuf != NULL
1800 && symtab_hdr->contents != (unsigned char *) isymbuf)
1801 free (isymbuf);
1802 return TRUE;
1803
1804 error_return:
1805 if (internal_relocs != NULL
1806 && elf_section_data (datasec)->relocs != internal_relocs)
1807 free (internal_relocs);
1808 if (isymbuf != NULL
1809 && symtab_hdr->contents != (unsigned char *) isymbuf)
1810 free (isymbuf);
1811 return FALSE;
1812 }
1813 \f
1814 /* ECOFF swapping routines. These are used when dealing with the
1815 .mdebug section, which is in the ECOFF debugging format. */
1816 static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
1817 /* Symbol table magic number. */
1818 magicSym,
1819 /* Alignment of debugging information. E.g., 4. */
1820 4,
1821 /* Sizes of external symbolic information. */
1822 sizeof (struct hdr_ext),
1823 sizeof (struct dnr_ext),
1824 sizeof (struct pdr_ext),
1825 sizeof (struct sym_ext),
1826 sizeof (struct opt_ext),
1827 sizeof (struct fdr_ext),
1828 sizeof (struct rfd_ext),
1829 sizeof (struct ext_ext),
1830 /* Functions to swap in external symbolic data. */
1831 ecoff_swap_hdr_in,
1832 ecoff_swap_dnr_in,
1833 ecoff_swap_pdr_in,
1834 ecoff_swap_sym_in,
1835 ecoff_swap_opt_in,
1836 ecoff_swap_fdr_in,
1837 ecoff_swap_rfd_in,
1838 ecoff_swap_ext_in,
1839 _bfd_ecoff_swap_tir_in,
1840 _bfd_ecoff_swap_rndx_in,
1841 /* Functions to swap out external symbolic data. */
1842 ecoff_swap_hdr_out,
1843 ecoff_swap_dnr_out,
1844 ecoff_swap_pdr_out,
1845 ecoff_swap_sym_out,
1846 ecoff_swap_opt_out,
1847 ecoff_swap_fdr_out,
1848 ecoff_swap_rfd_out,
1849 ecoff_swap_ext_out,
1850 _bfd_ecoff_swap_tir_out,
1851 _bfd_ecoff_swap_rndx_out,
1852 /* Function to read in symbolic data. */
1853 _bfd_mips_elf_read_ecoff_info
1854 };
1855 \f
1856 #define ELF_ARCH bfd_arch_mips
1857 #define ELF_MACHINE_CODE EM_MIPS
1858
1859 /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
1860 a value of 0x1000, and we are compatible. */
1861 #define ELF_MAXPAGESIZE 0x1000
1862
1863 #define elf_backend_collect TRUE
1864 #define elf_backend_type_change_ok TRUE
1865 #define elf_backend_can_gc_sections TRUE
1866 #define elf_info_to_howto mips_info_to_howto_rela
1867 #define elf_info_to_howto_rel mips_info_to_howto_rel
1868 #define elf_backend_sym_is_global mips_elf_sym_is_global
1869 #define elf_backend_object_p mips_elf32_object_p
1870 #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
1871 #define elf_backend_section_processing _bfd_mips_elf_section_processing
1872 #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
1873 #define elf_backend_fake_sections _bfd_mips_elf_fake_sections
1874 #define elf_backend_section_from_bfd_section \
1875 _bfd_mips_elf_section_from_bfd_section
1876 #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
1877 #define elf_backend_link_output_symbol_hook \
1878 _bfd_mips_elf_link_output_symbol_hook
1879 #define elf_backend_create_dynamic_sections \
1880 _bfd_mips_elf_create_dynamic_sections
1881 #define elf_backend_check_relocs _bfd_mips_elf_check_relocs
1882 #define elf_backend_adjust_dynamic_symbol \
1883 _bfd_mips_elf_adjust_dynamic_symbol
1884 #define elf_backend_always_size_sections \
1885 _bfd_mips_elf_always_size_sections
1886 #define elf_backend_size_dynamic_sections \
1887 _bfd_mips_elf_size_dynamic_sections
1888 #define elf_backend_relocate_section _bfd_mips_elf_relocate_section
1889 #define elf_backend_finish_dynamic_symbol \
1890 _bfd_mips_elf_finish_dynamic_symbol
1891 #define elf_backend_finish_dynamic_sections \
1892 _bfd_mips_elf_finish_dynamic_sections
1893 #define elf_backend_final_write_processing \
1894 _bfd_mips_elf_final_write_processing
1895 #define elf_backend_additional_program_headers \
1896 _bfd_mips_elf_additional_program_headers
1897 #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
1898 #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
1899 #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
1900 #define elf_backend_copy_indirect_symbol \
1901 _bfd_mips_elf_copy_indirect_symbol
1902 #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
1903 #define elf_backend_grok_prstatus elf32_mips_grok_prstatus
1904 #define elf_backend_grok_psinfo elf32_mips_grok_psinfo
1905 #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
1906
1907 #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
1908 #define elf_backend_plt_header_size 0
1909 #define elf_backend_may_use_rel_p 1
1910 #define elf_backend_may_use_rela_p 0
1911 #define elf_backend_default_use_rela_p 0
1912 #define elf_backend_sign_extend_vma TRUE
1913
1914 #define elf_backend_discard_info _bfd_mips_elf_discard_info
1915 #define elf_backend_ignore_discarded_relocs \
1916 _bfd_mips_elf_ignore_discarded_relocs
1917 #define elf_backend_mips_irix_compat elf32_mips_irix_compat
1918 #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
1919 #define bfd_elf32_bfd_is_local_label_name \
1920 mips_elf_is_local_label_name
1921 #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
1922 #define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
1923 #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
1924 #define bfd_elf32_bfd_get_relocated_section_contents \
1925 _bfd_elf_mips_get_relocated_section_contents
1926 #define bfd_elf32_bfd_link_hash_table_create \
1927 _bfd_mips_elf_link_hash_table_create
1928 #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
1929 #define bfd_elf32_bfd_merge_private_bfd_data \
1930 _bfd_mips_elf_merge_private_bfd_data
1931 #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
1932 #define bfd_elf32_bfd_print_private_bfd_data \
1933 _bfd_mips_elf_print_private_bfd_data
1934
1935 /* Support for SGI-ish mips targets. */
1936 #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
1937 #define TARGET_LITTLE_NAME "elf32-littlemips"
1938 #define TARGET_BIG_SYM bfd_elf32_bigmips_vec
1939 #define TARGET_BIG_NAME "elf32-bigmips"
1940
1941 #include "elf32-target.h"
1942
1943 /* Support for traditional mips targets. */
1944 #define INCLUDED_TARGET_FILE /* More a type of flag. */
1945
1946 #undef TARGET_LITTLE_SYM
1947 #undef TARGET_LITTLE_NAME
1948 #undef TARGET_BIG_SYM
1949 #undef TARGET_BIG_NAME
1950
1951 #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
1952 #define TARGET_LITTLE_NAME "elf32-tradlittlemips"
1953 #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
1954 #define TARGET_BIG_NAME "elf32-tradbigmips"
1955
1956 /* Include the target file again for this target. */
1957 #include "elf32-target.h"
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