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[deliverable/binutils-gdb.git] / bfd / elf32-mips.c
CommitLineData
efcbd82c 1/* MIPS-specific support for 32-bit ELF
f0abc2a1 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
157090f7 3 2003, 2004, 2005, 2007 Free Software Foundation, Inc.
252b5132
RH		 4
5 Most of the information added by Ian Lance Taylor, Cygnus Support,
6 <ian@cygnus.com>.
103186c6
MM		 7 N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC.
8 <mark@codesourcery.com>
f7cb7d68
UC		 9 Traditional MIPS targets support added by Koundinya.K, Dansk Data
10 Elektronik & Operations Research Group. <kk@ddeorg.soft.net>
252b5132 11
cd123cb7 12 This file is part of BFD, the Binary File Descriptor library.
252b5132 13
cd123cb7
NC		 14 This program is free software; you can redistribute it and/or modify
15 it under the terms of the GNU General Public License as published by
16 the Free Software Foundation; either version 3 of the License, or
17 (at your option) any later version.
252b5132 18
cd123cb7
NC		 19 This program is distributed in the hope that it will be useful,
20 but WITHOUT ANY WARRANTY; without even the implied warranty of
21 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 GNU General Public License for more details.
23
24 You should have received a copy of the GNU General Public License
25 along with this program; if not, write to the Free Software
26 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
27 MA 02110-1301, USA. */
252b5132 28
252b5132
RH		 29
30/* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly
31 different MIPS ELF from other targets. This matters when linking.
32 This file supports both, switching at runtime. */
33
252b5132 34#include "sysdep.h"
3db64b00 35#include "bfd.h"
252b5132
RH		 36#include "libbfd.h"
37#include "bfdlink.h"
38#include "genlink.h"
39#include "elf-bfd.h"
c6e90b02 40#include "elfxx-mips.h"
252b5132 41#include "elf/mips.h"
0a44bf69 42#include "elf-vxworks.h"
252b5132
RH		 43
44/* Get the ECOFF swapping routines. */
45#include "coff/sym.h"
46#include "coff/symconst.h"
47#include "coff/internal.h"
48#include "coff/ecoff.h"
49#include "coff/mips.h"
23e2c83b 50#define ECOFF_SIGNED_32
252b5132
RH		 51#include "ecoffswap.h"
52
a7ebbfdf 53static bfd_reloc_status_type gprel32_with_gp
11a2be4d 54 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
c6e90b02 55static bfd_reloc_status_type mips_elf_gprel32_reloc
11a2be4d 56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 57static bfd_reloc_status_type mips32_64bit_reloc
11a2be4d 58 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 59static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
11a2be4d 60 (bfd *, bfd_reloc_code_real_type);
c6e90b02 61static reloc_howto_type *mips_elf32_rtype_to_howto
11a2be4d 62 (unsigned int, bfd_boolean);
252b5132 63static void mips_info_to_howto_rel
11a2be4d 64 (bfd *, arelent *, Elf_Internal_Rela *);
3f830999 65static void mips_info_to_howto_rela
11a2be4d 66 (bfd *, arelent *, Elf_Internal_Rela *);
b34976b6 67static bfd_boolean mips_elf_sym_is_global
11a2be4d 68 (bfd *, asymbol *);
b34976b6 69static bfd_boolean mips_elf32_object_p
11a2be4d 70 (bfd *);
b34976b6 71static bfd_boolean mips_elf_is_local_label_name
11a2be4d 72 (bfd *, const char *);
252b5132 73static bfd_reloc_status_type mips16_gprel_reloc
11a2be4d 74 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 75static bfd_reloc_status_type mips_elf_final_gp
11a2be4d 76 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
b34976b6 77static bfd_boolean mips_elf_assign_gp
11a2be4d 78 (bfd *, bfd_vma *);
b34976b6 79static bfd_boolean elf32_mips_grok_prstatus
11a2be4d 80 (bfd *, Elf_Internal_Note *);
b34976b6 81static bfd_boolean elf32_mips_grok_psinfo
11a2be4d 82 (bfd *, Elf_Internal_Note *);
c6e90b02 83static irix_compat_t elf32_mips_irix_compat
11a2be4d 84 (bfd *);
252b5132 85
cb7394f2
TS		 86extern const bfd_target bfd_elf32_bigmips_vec;
87extern const bfd_target bfd_elf32_littlemips_vec;
adb76a3e 88
a94a7c1c 89/* Nonzero if ABFD is using the N32 ABI. */
a94a7c1c
MM		 90#define ABI_N32_P(abfd) \
91 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
92
4e8a9624 93/* Whether we are trying to be compatible with IRIX at all. */
a94a7c1c 94#define SGI_COMPAT(abfd) \
c6e90b02 95 (elf32_mips_irix_compat (abfd) != ict_none)
103186c6 96
252b5132
RH		 97/* The number of local .got entries we reserve. */
98#define MIPS_RESERVED_GOTNO (2)
99
3f830999
MM		 100/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
101 from smaller values. Start with zero, widen, *then* decrement. */
102#define MINUS_ONE (((bfd_vma)0) - 1)
103
d75bc93d
TS		 104/* The relocation table used for SHT_REL sections. */
105
106static reloc_howto_type elf_mips_howto_table_rel[] =
107{
108 /* No relocation. */
109 HOWTO (R_MIPS_NONE, /* type */
110 0, /* rightshift */
111 0, /* size (0 = byte, 1 = short, 2 = long) */
112 0, /* bitsize */
b34976b6 113 FALSE, /* pc_relative */
d75bc93d
TS		 114 0, /* bitpos */
115 complain_overflow_dont, /* complain_on_overflow */
30ac9238 116 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 117 "R_MIPS_NONE", /* name */
b34976b6 118 FALSE, /* partial_inplace */
d75bc93d
TS		 119 0, /* src_mask */
120 0, /* dst_mask */
b34976b6 121 FALSE), /* pcrel_offset */
d75bc93d
TS		 122
123 /* 16 bit relocation. */
124 HOWTO (R_MIPS_16, /* type */
125 0, /* rightshift */
126 2, /* size (0 = byte, 1 = short, 2 = long) */
127 16, /* bitsize */
b34976b6 128 FALSE, /* pc_relative */
d75bc93d
TS		 129 0, /* bitpos */
130 complain_overflow_signed, /* complain_on_overflow */
30ac9238 131 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 132 "R_MIPS_16", /* name */
b34976b6 133 TRUE, /* partial_inplace */
d75bc93d
TS		 134 0x0000ffff, /* src_mask */
135 0x0000ffff, /* dst_mask */
b34976b6 136 FALSE), /* pcrel_offset */
d75bc93d
TS		 137
138 /* 32 bit relocation. */
139 HOWTO (R_MIPS_32, /* type */
140 0, /* rightshift */
141 2, /* size (0 = byte, 1 = short, 2 = long) */
142 32, /* bitsize */
b34976b6 143 FALSE, /* pc_relative */
d75bc93d
TS		 144 0, /* bitpos */
145 complain_overflow_dont, /* complain_on_overflow */
30ac9238 146 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 147 "R_MIPS_32", /* name */
b34976b6 148 TRUE, /* partial_inplace */
d75bc93d
TS		 149 0xffffffff, /* src_mask */
150 0xffffffff, /* dst_mask */
b34976b6 151 FALSE), /* pcrel_offset */
d75bc93d
TS		 152
153 /* 32 bit symbol relative relocation. */
154 HOWTO (R_MIPS_REL32, /* type */
155 0, /* rightshift */
156 2, /* size (0 = byte, 1 = short, 2 = long) */
157 32, /* bitsize */
b34976b6 158 FALSE, /* pc_relative */
d75bc93d
TS		 159 0, /* bitpos */
160 complain_overflow_dont, /* complain_on_overflow */
30ac9238 161 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 162 "R_MIPS_REL32", /* name */
b34976b6 163 TRUE, /* partial_inplace */
d75bc93d
TS		 164 0xffffffff, /* src_mask */
165 0xffffffff, /* dst_mask */
b34976b6 166 FALSE), /* pcrel_offset */
d75bc93d
TS		 167
168 /* 26 bit jump address. */
169 HOWTO (R_MIPS_26, /* type */
170 2, /* rightshift */
171 2, /* size (0 = byte, 1 = short, 2 = long) */
172 26, /* bitsize */
b34976b6 173 FALSE, /* pc_relative */
d75bc93d
TS		 174 0, /* bitpos */
175 complain_overflow_dont, /* complain_on_overflow */
176 /* This needs complex overflow
177 detection, because the upper four
178 bits must match the PC + 4. */
30ac9238 179 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 180 "R_MIPS_26", /* name */
b34976b6 181 TRUE, /* partial_inplace */
d75bc93d
TS		 182 0x03ffffff, /* src_mask */
183 0x03ffffff, /* dst_mask */
b34976b6 184 FALSE), /* pcrel_offset */
d75bc93d
TS		 185
186 /* High 16 bits of symbol value. */
187 HOWTO (R_MIPS_HI16, /* type */
30ac9238 188 16, /* rightshift */
d75bc93d
TS		 189 2, /* size (0 = byte, 1 = short, 2 = long) */
190 16, /* bitsize */
b34976b6 191 FALSE, /* pc_relative */
d75bc93d
TS		 192 0, /* bitpos */
193 complain_overflow_dont, /* complain_on_overflow */
30ac9238 194 _bfd_mips_elf_hi16_reloc, /* special_function */
d75bc93d 195 "R_MIPS_HI16", /* name */
b34976b6 196 TRUE, /* partial_inplace */
d75bc93d
TS		 197 0x0000ffff, /* src_mask */
198 0x0000ffff, /* dst_mask */
b34976b6 199 FALSE), /* pcrel_offset */
d75bc93d
TS		 200
201 /* Low 16 bits of symbol value. */
202 HOWTO (R_MIPS_LO16, /* type */
203 0, /* rightshift */
204 2, /* size (0 = byte, 1 = short, 2 = long) */
205 16, /* bitsize */
b34976b6 206 FALSE, /* pc_relative */
d75bc93d
TS		 207 0, /* bitpos */
208 complain_overflow_dont, /* complain_on_overflow */
30ac9238 209 _bfd_mips_elf_lo16_reloc, /* special_function */
d75bc93d 210 "R_MIPS_LO16", /* name */
b34976b6 211 TRUE, /* partial_inplace */
d75bc93d
TS		 212 0x0000ffff, /* src_mask */
213 0x0000ffff, /* dst_mask */
b34976b6 214 FALSE), /* pcrel_offset */
d75bc93d
TS		 215
216 /* GP relative reference. */
217 HOWTO (R_MIPS_GPREL16, /* type */
218 0, /* rightshift */
219 2, /* size (0 = byte, 1 = short, 2 = long) */
220 16, /* bitsize */
b34976b6 221 FALSE, /* pc_relative */
d75bc93d
TS		 222 0, /* bitpos */
223 complain_overflow_signed, /* complain_on_overflow */
c6e90b02 224 _bfd_mips_elf32_gprel16_reloc, /* special_function */
d75bc93d 225 "R_MIPS_GPREL16", /* name */
b34976b6 226 TRUE, /* partial_inplace */
d75bc93d
TS		 227 0x0000ffff, /* src_mask */
228 0x0000ffff, /* dst_mask */
b34976b6 229 FALSE), /* pcrel_offset */
d75bc93d
TS		 230
231 /* Reference to literal section. */
232 HOWTO (R_MIPS_LITERAL, /* type */
233 0, /* rightshift */
234 2, /* size (0 = byte, 1 = short, 2 = long) */
235 16, /* bitsize */
b34976b6 236 FALSE, /* pc_relative */
d75bc93d
TS		 237 0, /* bitpos */
238 complain_overflow_signed, /* complain_on_overflow */
c6e90b02 239 _bfd_mips_elf32_gprel16_reloc, /* special_function */
d75bc93d 240 "R_MIPS_LITERAL", /* name */
b34976b6 241 TRUE, /* partial_inplace */
d75bc93d
TS		 242 0x0000ffff, /* src_mask */
243 0x0000ffff, /* dst_mask */
b34976b6 244 FALSE), /* pcrel_offset */
d75bc93d
TS		 245
246 /* Reference to global offset table. */
247 HOWTO (R_MIPS_GOT16, /* type */
248 0, /* rightshift */
249 2, /* size (0 = byte, 1 = short, 2 = long) */
250 16, /* bitsize */
b34976b6 251 FALSE, /* pc_relative */
d75bc93d
TS		 252 0, /* bitpos */
253 complain_overflow_signed, /* complain_on_overflow */
30ac9238 254 _bfd_mips_elf_got16_reloc, /* special_function */
d75bc93d 255 "R_MIPS_GOT16", /* name */
b34976b6 256 TRUE, /* partial_inplace */
d75bc93d
TS		 257 0x0000ffff, /* src_mask */
258 0x0000ffff, /* dst_mask */
b34976b6 259 FALSE), /* pcrel_offset */
d75bc93d 260
bad36eac
DJ		 261 /* 16 bit PC relative reference. Note that the ABI document has a typo
262 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
263 We do the right thing here. */
d75bc93d 264 HOWTO (R_MIPS_PC16, /* type */
bad36eac 265 2, /* rightshift */
d75bc93d
TS		 266 2, /* size (0 = byte, 1 = short, 2 = long) */
267 16, /* bitsize */
b34976b6 268 TRUE, /* pc_relative */
d75bc93d
TS		 269 0, /* bitpos */
270 complain_overflow_signed, /* complain_on_overflow */
30ac9238 271 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 272 "R_MIPS_PC16", /* name */
b34976b6 273 TRUE, /* partial_inplace */
d75bc93d
TS		 274 0x0000ffff, /* src_mask */
275 0x0000ffff, /* dst_mask */
b34976b6 276 TRUE), /* pcrel_offset */
d75bc93d
TS		 277
278 /* 16 bit call through global offset table. */
279 HOWTO (R_MIPS_CALL16, /* type */
280 0, /* rightshift */
281 2, /* size (0 = byte, 1 = short, 2 = long) */
282 16, /* bitsize */
b34976b6 283 FALSE, /* pc_relative */
d75bc93d
TS		 284 0, /* bitpos */
285 complain_overflow_signed, /* complain_on_overflow */
30ac9238 286 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 287 "R_MIPS_CALL16", /* name */
b34976b6 288 TRUE, /* partial_inplace */
d75bc93d
TS		 289 0x0000ffff, /* src_mask */
290 0x0000ffff, /* dst_mask */
b34976b6 291 FALSE), /* pcrel_offset */
d75bc93d
TS		 292
293 /* 32 bit GP relative reference. */
294 HOWTO (R_MIPS_GPREL32, /* type */
295 0, /* rightshift */
296 2, /* size (0 = byte, 1 = short, 2 = long) */
297 32, /* bitsize */
b34976b6 298 FALSE, /* pc_relative */
d75bc93d
TS		 299 0, /* bitpos */
300 complain_overflow_dont, /* complain_on_overflow */
c6e90b02 301 mips_elf_gprel32_reloc, /* special_function */
d75bc93d 302 "R_MIPS_GPREL32", /* name */
b34976b6 303 TRUE, /* partial_inplace */
d75bc93d
TS		 304 0xffffffff, /* src_mask */
305 0xffffffff, /* dst_mask */
b34976b6 306 FALSE), /* pcrel_offset */
d75bc93d
TS		 307
308 /* The remaining relocs are defined on Irix 5, although they are
309 not defined by the ABI. */
310 EMPTY_HOWTO (13),
311 EMPTY_HOWTO (14),
312 EMPTY_HOWTO (15),
313
314 /* A 5 bit shift field. */
315 HOWTO (R_MIPS_SHIFT5, /* type */
316 0, /* rightshift */
317 2, /* size (0 = byte, 1 = short, 2 = long) */
318 5, /* bitsize */
b34976b6 319 FALSE, /* pc_relative */
d75bc93d
TS		 320 6, /* bitpos */
321 complain_overflow_bitfield, /* complain_on_overflow */
30ac9238 322 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 323 "R_MIPS_SHIFT5", /* name */
b34976b6 324 TRUE, /* partial_inplace */
d75bc93d
TS		 325 0x000007c0, /* src_mask */
326 0x000007c0, /* dst_mask */
b34976b6 327 FALSE), /* pcrel_offset */
d75bc93d
TS		 328
329 /* A 6 bit shift field. */
330 /* FIXME: This is not handled correctly; a special function is
331 needed to put the most significant bit in the right place. */
332 HOWTO (R_MIPS_SHIFT6, /* type */
333 0, /* rightshift */
334 2, /* size (0 = byte, 1 = short, 2 = long) */
335 6, /* bitsize */
b34976b6 336 FALSE, /* pc_relative */
d75bc93d
TS		 337 6, /* bitpos */
338 complain_overflow_bitfield, /* complain_on_overflow */
30ac9238 339 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 340 "R_MIPS_SHIFT6", /* name */
b34976b6 341 TRUE, /* partial_inplace */
d75bc93d
TS		 342 0x000007c4, /* src_mask */
343 0x000007c4, /* dst_mask */
b34976b6 344 FALSE), /* pcrel_offset */
d75bc93d
TS		 345
346 /* A 64 bit relocation. */
347 HOWTO (R_MIPS_64, /* type */
348 0, /* rightshift */
349 4, /* size (0 = byte, 1 = short, 2 = long) */
350 64, /* bitsize */
b34976b6 351 FALSE, /* pc_relative */
d75bc93d
TS		 352 0, /* bitpos */
353 complain_overflow_dont, /* complain_on_overflow */
354 mips32_64bit_reloc, /* special_function */
355 "R_MIPS_64", /* name */
b34976b6 356 TRUE, /* partial_inplace */
d75bc93d
TS		 357 MINUS_ONE, /* src_mask */
358 MINUS_ONE, /* dst_mask */
b34976b6 359 FALSE), /* pcrel_offset */
d75bc93d
TS		 360
361 /* Displacement in the global offset table. */
362 HOWTO (R_MIPS_GOT_DISP, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 16, /* bitsize */
b34976b6 366 FALSE, /* pc_relative */
d75bc93d
TS		 367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
30ac9238 369 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 370 "R_MIPS_GOT_DISP", /* name */
b34976b6 371 TRUE, /* partial_inplace */
d75bc93d
TS		 372 0x0000ffff, /* src_mask */
373 0x0000ffff, /* dst_mask */
b34976b6 374 FALSE), /* pcrel_offset */
d75bc93d
TS		 375
376 /* Displacement to page pointer in the global offset table. */
377 HOWTO (R_MIPS_GOT_PAGE, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 16, /* bitsize */
b34976b6 381 FALSE, /* pc_relative */
d75bc93d
TS		 382 0, /* bitpos */
383 complain_overflow_signed, /* complain_on_overflow */
30ac9238 384 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 385 "R_MIPS_GOT_PAGE", /* name */
b34976b6 386 TRUE, /* partial_inplace */
d75bc93d
TS		 387 0x0000ffff, /* src_mask */
388 0x0000ffff, /* dst_mask */
b34976b6 389 FALSE), /* pcrel_offset */
d75bc93d
TS		 390
391 /* Offset from page pointer in the global offset table. */
392 HOWTO (R_MIPS_GOT_OFST, /* type */
393 0, /* rightshift */
394 2, /* size (0 = byte, 1 = short, 2 = long) */
395 16, /* bitsize */
b34976b6 396 FALSE, /* pc_relative */
d75bc93d
TS		 397 0, /* bitpos */
398 complain_overflow_signed, /* complain_on_overflow */
30ac9238 399 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 400 "R_MIPS_GOT_OFST", /* name */
b34976b6 401 TRUE, /* partial_inplace */
d75bc93d
TS		 402 0x0000ffff, /* src_mask */
403 0x0000ffff, /* dst_mask */
b34976b6 404 FALSE), /* pcrel_offset */
d75bc93d
TS		 405
406 /* High 16 bits of displacement in global offset table. */
407 HOWTO (R_MIPS_GOT_HI16, /* type */
408 0, /* rightshift */
409 2, /* size (0 = byte, 1 = short, 2 = long) */
410 16, /* bitsize */
b34976b6 411 FALSE, /* pc_relative */
d75bc93d
TS		 412 0, /* bitpos */
413 complain_overflow_dont, /* complain_on_overflow */
30ac9238 414 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 415 "R_MIPS_GOT_HI16", /* name */
b34976b6 416 TRUE, /* partial_inplace */
d75bc93d
TS		 417 0x0000ffff, /* src_mask */
418 0x0000ffff, /* dst_mask */
b34976b6 419 FALSE), /* pcrel_offset */
d75bc93d
TS		 420
421 /* Low 16 bits of displacement in global offset table. */
422 HOWTO (R_MIPS_GOT_LO16, /* type */
423 0, /* rightshift */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
425 16, /* bitsize */
b34976b6 426 FALSE, /* pc_relative */
d75bc93d
TS		 427 0, /* bitpos */
428 complain_overflow_dont, /* complain_on_overflow */
30ac9238 429 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 430 "R_MIPS_GOT_LO16", /* name */
b34976b6 431 TRUE, /* partial_inplace */
d75bc93d
TS		 432 0x0000ffff, /* src_mask */
433 0x0000ffff, /* dst_mask */
b34976b6 434 FALSE), /* pcrel_offset */
d75bc93d
TS		 435
436 /* 64 bit subtraction. Used in the N32 ABI. */
437 HOWTO (R_MIPS_SUB, /* type */
438 0, /* rightshift */
439 4, /* size (0 = byte, 1 = short, 2 = long) */
440 64, /* bitsize */
b34976b6 441 FALSE, /* pc_relative */
d75bc93d
TS		 442 0, /* bitpos */
443 complain_overflow_dont, /* complain_on_overflow */
30ac9238 444 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 445 "R_MIPS_SUB", /* name */
b34976b6 446 TRUE, /* partial_inplace */
d75bc93d
TS		 447 MINUS_ONE, /* src_mask */
448 MINUS_ONE, /* dst_mask */
b34976b6 449 FALSE), /* pcrel_offset */
d75bc93d
TS		 450
451 /* Used to cause the linker to insert and delete instructions? */
452 EMPTY_HOWTO (R_MIPS_INSERT_A),
453 EMPTY_HOWTO (R_MIPS_INSERT_B),
454 EMPTY_HOWTO (R_MIPS_DELETE),
455
456 /* Get the higher value of a 64 bit addend. */
457 HOWTO (R_MIPS_HIGHER, /* type */
458 0, /* rightshift */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
460 16, /* bitsize */
b34976b6 461 FALSE, /* pc_relative */
d75bc93d
TS		 462 0, /* bitpos */
463 complain_overflow_dont, /* complain_on_overflow */
30ac9238 464 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 465 "R_MIPS_HIGHER", /* name */
b34976b6 466 TRUE, /* partial_inplace */
d75bc93d
TS		 467 0x0000ffff, /* src_mask */
468 0x0000ffff, /* dst_mask */
b34976b6 469 FALSE), /* pcrel_offset */
d75bc93d
TS		 470
471 /* Get the highest value of a 64 bit addend. */
472 HOWTO (R_MIPS_HIGHEST, /* type */
473 0, /* rightshift */
474 2, /* size (0 = byte, 1 = short, 2 = long) */
475 16, /* bitsize */
b34976b6 476 FALSE, /* pc_relative */
d75bc93d
TS		 477 0, /* bitpos */
478 complain_overflow_dont, /* complain_on_overflow */
30ac9238 479 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 480 "R_MIPS_HIGHEST", /* name */
b34976b6 481 TRUE, /* partial_inplace */
d75bc93d
TS		 482 0x0000ffff, /* src_mask */
483 0x0000ffff, /* dst_mask */
b34976b6 484 FALSE), /* pcrel_offset */
d75bc93d
TS		 485
486 /* High 16 bits of displacement in global offset table. */
487 HOWTO (R_MIPS_CALL_HI16, /* type */
488 0, /* rightshift */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
490 16, /* bitsize */
b34976b6 491 FALSE, /* pc_relative */
d75bc93d
TS		 492 0, /* bitpos */
493 complain_overflow_dont, /* complain_on_overflow */
30ac9238 494 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 495 "R_MIPS_CALL_HI16", /* name */
b34976b6 496 TRUE, /* partial_inplace */
d75bc93d
TS		 497 0x0000ffff, /* src_mask */
498 0x0000ffff, /* dst_mask */
b34976b6 499 FALSE), /* pcrel_offset */
d75bc93d
TS		 500
501 /* Low 16 bits of displacement in global offset table. */
502 HOWTO (R_MIPS_CALL_LO16, /* type */
503 0, /* rightshift */
504 2, /* size (0 = byte, 1 = short, 2 = long) */
505 16, /* bitsize */
b34976b6 506 FALSE, /* pc_relative */
d75bc93d
TS		 507 0, /* bitpos */
508 complain_overflow_dont, /* complain_on_overflow */
30ac9238 509 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 510 "R_MIPS_CALL_LO16", /* name */
b34976b6 511 TRUE, /* partial_inplace */
d75bc93d
TS		 512 0x0000ffff, /* src_mask */
513 0x0000ffff, /* dst_mask */
b34976b6 514 FALSE), /* pcrel_offset */
d75bc93d
TS		 515
516 /* Section displacement. */
517 HOWTO (R_MIPS_SCN_DISP, /* type */
518 0, /* rightshift */
519 2, /* size (0 = byte, 1 = short, 2 = long) */
520 32, /* bitsize */
b34976b6 521 FALSE, /* pc_relative */
d75bc93d
TS		 522 0, /* bitpos */
523 complain_overflow_dont, /* complain_on_overflow */
30ac9238 524 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 525 "R_MIPS_SCN_DISP", /* name */
b34976b6 526 TRUE, /* partial_inplace */
d75bc93d
TS		 527 0xffffffff, /* src_mask */
528 0xffffffff, /* dst_mask */
b34976b6 529 FALSE), /* pcrel_offset */
d75bc93d
TS		 530
531 EMPTY_HOWTO (R_MIPS_REL16),
532 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
533 EMPTY_HOWTO (R_MIPS_PJUMP),
534 EMPTY_HOWTO (R_MIPS_RELGOT),
535
536 /* Protected jump conversion. This is an optimization hint. No
537 relocation is required for correctness. */
538 HOWTO (R_MIPS_JALR, /* type */
539 0, /* rightshift */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
541 32, /* bitsize */
b34976b6 542 FALSE, /* pc_relative */
d75bc93d
TS		 543 0, /* bitpos */
544 complain_overflow_dont, /* complain_on_overflow */
30ac9238 545 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 546 "R_MIPS_JALR", /* name */
b34976b6 547 FALSE, /* partial_inplace */
d75bc93d
TS		 548 0x00000000, /* src_mask */
549 0x00000000, /* dst_mask */
b34976b6 550 FALSE), /* pcrel_offset */
0f20cc35
DJ		 551
552 /* TLS GD/LD dynamic relocations. */
553 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
554 0, /* rightshift */
555 2, /* size (0 = byte, 1 = short, 2 = long) */
556 32, /* bitsize */
557 FALSE, /* pc_relative */
558 0, /* bitpos */
559 complain_overflow_dont, /* complain_on_overflow */
560 _bfd_mips_elf_generic_reloc, /* special_function */
561 "R_MIPS_TLS_DTPMOD32", /* name */
562 TRUE, /* partial_inplace */
563 0xffffffff, /* src_mask */
564 0xffffffff, /* dst_mask */
565 FALSE), /* pcrel_offset */
566
567 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
568 0, /* rightshift */
569 2, /* size (0 = byte, 1 = short, 2 = long) */
570 32, /* bitsize */
571 FALSE, /* pc_relative */
572 0, /* bitpos */
573 complain_overflow_dont, /* complain_on_overflow */
574 _bfd_mips_elf_generic_reloc, /* special_function */
575 "R_MIPS_TLS_DTPREL32", /* name */
576 TRUE, /* partial_inplace */
577 0xffffffff, /* src_mask */
578 0xffffffff, /* dst_mask */
579 FALSE), /* pcrel_offset */
580
581 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
582 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
583
584 /* TLS general dynamic variable reference. */
585 HOWTO (R_MIPS_TLS_GD, /* type */
586 0, /* rightshift */
587 2, /* size (0 = byte, 1 = short, 2 = long) */
588 16, /* bitsize */
589 FALSE, /* pc_relative */
590 0, /* bitpos */
591 complain_overflow_signed, /* complain_on_overflow */
592 _bfd_mips_elf_generic_reloc, /* special_function */
593 "R_MIPS_TLS_GD", /* name */
594 TRUE, /* partial_inplace */
595 0x0000ffff, /* src_mask */
596 0x0000ffff, /* dst_mask */
597 FALSE), /* pcrel_offset */
598
599 /* TLS local dynamic variable reference. */
600 HOWTO (R_MIPS_TLS_LDM, /* type */
601 0, /* rightshift */
602 2, /* size (0 = byte, 1 = short, 2 = long) */
603 16, /* bitsize */
604 FALSE, /* pc_relative */
605 0, /* bitpos */
606 complain_overflow_signed, /* complain_on_overflow */
607 _bfd_mips_elf_generic_reloc, /* special_function */
608 "R_MIPS_TLS_LDM", /* name */
609 TRUE, /* partial_inplace */
610 0x0000ffff, /* src_mask */
611 0x0000ffff, /* dst_mask */
612 FALSE), /* pcrel_offset */
613
614 /* TLS local dynamic offset. */
615 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
616 0, /* rightshift */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
618 16, /* bitsize */
619 FALSE, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_signed, /* complain_on_overflow */
622 _bfd_mips_elf_generic_reloc, /* special_function */
623 "R_MIPS_TLS_DTPREL_HI16", /* name */
624 TRUE, /* partial_inplace */
625 0x0000ffff, /* src_mask */
626 0x0000ffff, /* dst_mask */
627 FALSE), /* pcrel_offset */
628
629 /* TLS local dynamic offset. */
630 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
631 0, /* rightshift */
632 2, /* size (0 = byte, 1 = short, 2 = long) */
633 16, /* bitsize */
634 FALSE, /* pc_relative */
635 0, /* bitpos */
636 complain_overflow_signed, /* complain_on_overflow */
637 _bfd_mips_elf_generic_reloc, /* special_function */
638 "R_MIPS_TLS_DTPREL_LO16", /* name */
639 TRUE, /* partial_inplace */
640 0x0000ffff, /* src_mask */
641 0x0000ffff, /* dst_mask */
642 FALSE), /* pcrel_offset */
643
644 /* TLS thread pointer offset. */
645 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
646 0, /* rightshift */
647 2, /* size (0 = byte, 1 = short, 2 = long) */
648 16, /* bitsize */
649 FALSE, /* pc_relative */
650 0, /* bitpos */
651 complain_overflow_signed, /* complain_on_overflow */
652 _bfd_mips_elf_generic_reloc, /* special_function */
653 "R_MIPS_TLS_GOTTPREL", /* name */
654 TRUE, /* partial_inplace */
655 0x0000ffff, /* src_mask */
656 0x0000ffff, /* dst_mask */
657 FALSE), /* pcrel_offset */
658
659 /* TLS IE dynamic relocations. */
660 HOWTO (R_MIPS_TLS_TPREL32, /* type */
661 0, /* rightshift */
662 2, /* size (0 = byte, 1 = short, 2 = long) */
663 32, /* bitsize */
664 FALSE, /* pc_relative */
665 0, /* bitpos */
666 complain_overflow_dont, /* complain_on_overflow */
667 _bfd_mips_elf_generic_reloc, /* special_function */
668 "R_MIPS_TLS_TPREL32", /* name */
669 TRUE, /* partial_inplace */
670 0xffffffff, /* src_mask */
671 0xffffffff, /* dst_mask */
672 FALSE), /* pcrel_offset */
673
674 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
675
676 /* TLS thread pointer offset. */
677 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
678 0, /* rightshift */
679 2, /* size (0 = byte, 1 = short, 2 = long) */
680 16, /* bitsize */
681 FALSE, /* pc_relative */
682 0, /* bitpos */
683 complain_overflow_signed, /* complain_on_overflow */
684 _bfd_mips_elf_generic_reloc, /* special_function */
685 "R_MIPS_TLS_TPREL_HI16", /* name */
686 TRUE, /* partial_inplace */
687 0x0000ffff, /* src_mask */
688 0x0000ffff, /* dst_mask */
689 FALSE), /* pcrel_offset */
690
691 /* TLS thread pointer offset. */
692 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
693 0, /* rightshift */
694 2, /* size (0 = byte, 1 = short, 2 = long) */
695 16, /* bitsize */
696 FALSE, /* pc_relative */
697 0, /* bitpos */
698 complain_overflow_signed, /* complain_on_overflow */
699 _bfd_mips_elf_generic_reloc, /* special_function */
700 "R_MIPS_TLS_TPREL_LO16", /* name */
701 TRUE, /* partial_inplace */
702 0x0000ffff, /* src_mask */
703 0x0000ffff, /* dst_mask */
704 FALSE), /* pcrel_offset */
165b93e7
RS		 705
706 /* 32 bit relocation with no addend. */
707 HOWTO (R_MIPS_GLOB_DAT, /* type */
708 0, /* rightshift */
709 2, /* size (0 = byte, 1 = short, 2 = long) */
710 32, /* bitsize */
711 FALSE, /* pc_relative */
712 0, /* bitpos */
713 complain_overflow_dont, /* complain_on_overflow */
714 _bfd_mips_elf_generic_reloc, /* special_function */
715 "R_MIPS_GLOB_DAT", /* name */
716 FALSE, /* partial_inplace */
717 0x0, /* src_mask */
718 0xffffffff, /* dst_mask */
719 FALSE), /* pcrel_offset */
d75bc93d
TS		 720};
721
c6e90b02
TS		 722/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
723 is a hack to make the linker think that we need 64 bit values. */
724static reloc_howto_type elf_mips_ctor64_howto =
725 HOWTO (R_MIPS_64, /* type */
252b5132 726 0, /* rightshift */
c6e90b02 727 4, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 728 32, /* bitsize */
b34976b6 729 FALSE, /* pc_relative */
252b5132 730 0, /* bitpos */
c6e90b02
TS		 731 complain_overflow_signed, /* complain_on_overflow */
732 mips32_64bit_reloc, /* special_function */
733 "R_MIPS_64", /* name */
b34976b6 734 TRUE, /* partial_inplace */
c6e90b02 735 0xffffffff, /* src_mask */
252b5132 736 0xffffffff, /* dst_mask */
b34976b6 737 FALSE); /* pcrel_offset */
252b5132 738
d6f16593
MR		 739static reloc_howto_type elf_mips16_howto_table_rel[] =
740{
741 /* The reloc used for the mips16 jump instruction. */
c6e90b02 742 HOWTO (R_MIPS16_26, /* type */
252b5132
RH		 743 2, /* rightshift */
744 2, /* size (0 = byte, 1 = short, 2 = long) */
745 26, /* bitsize */
b34976b6 746 FALSE, /* pc_relative */
252b5132
RH		 747 0, /* bitpos */
748 complain_overflow_dont, /* complain_on_overflow */
c6e90b02
TS		 749 /* This needs complex overflow
750 detection, because the upper four
751 bits must match the PC. */
35d3d567 752 _bfd_mips_elf_generic_reloc, /* special_function */
c6e90b02 753 "R_MIPS16_26", /* name */
b34976b6 754 TRUE, /* partial_inplace */
c6e90b02
TS		 755 0x3ffffff, /* src_mask */
756 0x3ffffff, /* dst_mask */
d6f16593 757 FALSE), /* pcrel_offset */
252b5132 758
d6f16593 759 /* The reloc used for the mips16 gprel instruction. */
c6e90b02 760 HOWTO (R_MIPS16_GPREL, /* type */
252b5132
RH		 761 0, /* rightshift */
762 2, /* size (0 = byte, 1 = short, 2 = long) */
763 16, /* bitsize */
b34976b6 764 FALSE, /* pc_relative */
252b5132 765 0, /* bitpos */
c6e90b02
TS		 766 complain_overflow_signed, /* complain_on_overflow */
767 mips16_gprel_reloc, /* special_function */
768 "R_MIPS16_GPREL", /* name */
b34976b6 769 TRUE, /* partial_inplace */
d6f16593
MR		 770 0x0000ffff, /* src_mask */
771 0x0000ffff, /* dst_mask */
772 FALSE), /* pcrel_offset */
773
738e5348
RS		 774 /* A MIPS16 reference to the global offset table. */
775 HOWTO (R_MIPS16_GOT16, /* type */
776 0, /* rightshift */
777 2, /* size (0 = byte, 1 = short, 2 = long) */
778 16, /* bitsize */
779 FALSE, /* pc_relative */
780 0, /* bitpos */
781 complain_overflow_dont, /* complain_on_overflow */
782 _bfd_mips_elf_got16_reloc, /* special_function */
783 "R_MIPS16_GOT16", /* name */
784 TRUE, /* partial_inplace */
785 0x0000ffff, /* src_mask */
786 0x0000ffff, /* dst_mask */
787 FALSE), /* pcrel_offset */
d6f16593 788
738e5348
RS		 789 /* A MIPS16 call through the global offset table. */
790 HOWTO (R_MIPS16_CALL16, /* type */
791 0, /* rightshift */
792 2, /* size (0 = byte, 1 = short, 2 = long) */
793 16, /* bitsize */
794 FALSE, /* pc_relative */
795 0, /* bitpos */
796 complain_overflow_dont, /* complain_on_overflow */
797 _bfd_mips_elf_generic_reloc, /* special_function */
798 "R_MIPS16_CALL16", /* name */
799 TRUE, /* partial_inplace */
800 0x0000ffff, /* src_mask */
801 0x0000ffff, /* dst_mask */
802 FALSE), /* pcrel_offset */
d6f16593
MR		 803
804 /* MIPS16 high 16 bits of symbol value. */
805 HOWTO (R_MIPS16_HI16, /* type */
806 16, /* rightshift */
807 2, /* size (0 = byte, 1 = short, 2 = long) */
808 16, /* bitsize */
809 FALSE, /* pc_relative */
810 0, /* bitpos */
811 complain_overflow_dont, /* complain_on_overflow */
812 _bfd_mips_elf_hi16_reloc, /* special_function */
813 "R_MIPS16_HI16", /* name */
814 TRUE, /* partial_inplace */
815 0x0000ffff, /* src_mask */
816 0x0000ffff, /* dst_mask */
817 FALSE), /* pcrel_offset */
818
819 /* MIPS16 low 16 bits of symbol value. */
820 HOWTO (R_MIPS16_LO16, /* type */
821 0, /* rightshift */
822 2, /* size (0 = byte, 1 = short, 2 = long) */
823 16, /* bitsize */
824 FALSE, /* pc_relative */
825 0, /* bitpos */
826 complain_overflow_dont, /* complain_on_overflow */
827 _bfd_mips_elf_lo16_reloc, /* special_function */
828 "R_MIPS16_LO16", /* name */
829 TRUE, /* partial_inplace */
830 0x0000ffff, /* src_mask */
831 0x0000ffff, /* dst_mask */
832 FALSE), /* pcrel_offset */
833};
252b5132 834
c6e90b02
TS		 835/* 16 bit offset for pc-relative branches. */
836static reloc_howto_type elf_mips_gnu_rel16_s2 =
837 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
838 2, /* rightshift */
252b5132
RH		 839 2, /* size (0 = byte, 1 = short, 2 = long) */
840 16, /* bitsize */
b34976b6 841 TRUE, /* pc_relative */
252b5132
RH		 842 0, /* bitpos */
843 complain_overflow_signed, /* complain_on_overflow */
30ac9238 844 _bfd_mips_elf_generic_reloc, /* special_function */
c6e90b02 845 "R_MIPS_GNU_REL16_S2", /* name */
b34976b6 846 TRUE, /* partial_inplace */
c6e90b02
TS		 847 0xffff, /* src_mask */
848 0xffff, /* dst_mask */
b34976b6 849 TRUE); /* pcrel_offset */
252b5132 850
092dcd75
CD		 851/* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
852 It was co-opted by mips-linux for exception-handling data. It is no
853 longer used, but should continue to be supported by the linker for
854 backward compatibility. (GCC stopped using it in May, 2004.) */
855static reloc_howto_type elf_mips_gnu_pcrel32 =
856 HOWTO (R_MIPS_PC32, /* type */
857 0, /* rightshift */
858 2, /* size (0 = byte, 1 = short, 2 = long) */
859 32, /* bitsize */
860 TRUE, /* pc_relative */
861 0, /* bitpos */
862 complain_overflow_signed, /* complain_on_overflow */
863 _bfd_mips_elf_generic_reloc, /* special_function */
864 "R_MIPS_PC32", /* name */
865 TRUE, /* partial_inplace */
866 0xffffffff, /* src_mask */
867 0xffffffff, /* dst_mask */
868 TRUE); /* pcrel_offset */
869
c6e90b02
TS		 870/* GNU extension to record C++ vtable hierarchy */
871static reloc_howto_type elf_mips_gnu_vtinherit_howto =
872 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
252b5132
RH		 873 0, /* rightshift */
874 2, /* size (0 = byte, 1 = short, 2 = long) */
c6e90b02 875 0, /* bitsize */
b34976b6 876 FALSE, /* pc_relative */
252b5132 877 0, /* bitpos */
c6e90b02
TS		 878 complain_overflow_dont, /* complain_on_overflow */
879 NULL, /* special_function */
880 "R_MIPS_GNU_VTINHERIT", /* name */
b34976b6 881 FALSE, /* partial_inplace */
d75bc93d 882 0, /* src_mask */
c6e90b02 883 0, /* dst_mask */
b34976b6 884 FALSE); /* pcrel_offset */
252b5132 885
c6e90b02
TS		 886/* GNU extension to record C++ vtable member usage */
887static reloc_howto_type elf_mips_gnu_vtentry_howto =
888 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
252b5132
RH		 889 0, /* rightshift */
890 2, /* size (0 = byte, 1 = short, 2 = long) */
c6e90b02 891 0, /* bitsize */
b34976b6 892 FALSE, /* pc_relative */
252b5132
RH		 893 0, /* bitpos */
894 complain_overflow_dont, /* complain_on_overflow */
c6e90b02
TS		 895 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
896 "R_MIPS_GNU_VTENTRY", /* name */
b34976b6 897 FALSE, /* partial_inplace */
d75bc93d 898 0, /* src_mask */
c6e90b02 899 0, /* dst_mask */
b34976b6 900 FALSE); /* pcrel_offset */
252b5132 901
b34976b6 902/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
c6e90b02 903 dangerous relocation. */
252b5132 904
b34976b6 905static bfd_boolean
11a2be4d 906mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
252b5132 907{
c6e90b02
TS		 908 unsigned int count;
909 asymbol **sym;
910 unsigned int i;
e92d460e 911
c6e90b02
TS		 912 /* If we've already figured out what GP will be, just return it. */
913 *pgp = _bfd_get_gp_value (output_bfd);
914 if (*pgp)
b34976b6 915 return TRUE;
c6e90b02
TS		 916
917 count = bfd_get_symcount (output_bfd);
918 sym = bfd_get_outsymbols (output_bfd);
252b5132 919
c6e90b02
TS		 920 /* The linker script will have created a symbol named `_gp' with the
921 appropriate value. */
11a2be4d 922 if (sym == NULL)
c6e90b02
TS		 923 i = count;
924 else
252b5132 925 {
c6e90b02
TS		 926 for (i = 0; i < count; i++, sym++)
927 {
928 register const char *name;
929
930 name = bfd_asymbol_name (*sym);
931 if (*name == '_' && strcmp (name, "_gp") == 0)
932 {
933 *pgp = bfd_asymbol_value (*sym);
934 _bfd_set_gp_value (output_bfd, *pgp);
935 break;
936 }
937 }
252b5132
RH		 938 }
939
c6e90b02 940 if (i >= count)
252b5132 941 {
c6e90b02
TS		 942 /* Only get the error once. */
943 *pgp = 4;
944 _bfd_set_gp_value (output_bfd, *pgp);
b34976b6 945 return FALSE;
252b5132
RH		 946 }
947
b34976b6 948 return TRUE;
252b5132
RH		 949}
950
c6e90b02
TS		 951/* We have to figure out the gp value, so that we can adjust the
952 symbol value correctly. We look up the symbol _gp in the output
953 BFD. If we can't find it, we're stuck. We cache it in the ELF
954 target data. We don't need to adjust the symbol value for an
1049f94e 955 external symbol if we are producing relocatable output. */
252b5132 956
c6e90b02 957static bfd_reloc_status_type
11a2be4d
RS		 958mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
959 char **error_message, bfd_vma *pgp)
252b5132 960{
c6e90b02 961 if (bfd_is_und_section (symbol->section)
1049f94e 962 && ! relocatable)
252b5132 963 {
c6e90b02
TS		 964 *pgp = 0;
965 return bfd_reloc_undefined;
252b5132
RH		 966 }
967
c6e90b02
TS		 968 *pgp = _bfd_get_gp_value (output_bfd);
969 if (*pgp == 0
1049f94e 970 && (! relocatable
c6e90b02 971 || (symbol->flags & BSF_SECTION_SYM) != 0))
252b5132 972 {
1049f94e 973 if (relocatable)
252b5132 974 {
c6e90b02
TS		 975 /* Make up a value. */
976 *pgp = symbol->section->output_section->vma + 0x4000;
977 _bfd_set_gp_value (output_bfd, *pgp);
252b5132 978 }
c6e90b02 979 else if (!mips_elf_assign_gp (output_bfd, pgp))
252b5132 980 {
c6e90b02
TS		 981 *error_message =
982 (char *) _("GP relative relocation when _gp not defined");
983 return bfd_reloc_dangerous;
252b5132 984 }
252b5132
RH		 985 }
986
c6e90b02
TS		 987 return bfd_reloc_ok;
988}
252b5132 989
c6e90b02
TS		 990/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
991 become the offset from the gp register. This function also handles
992 R_MIPS_LITERAL relocations, although those can be handled more
993 cleverly because the entries in the .lit8 and .lit4 sections can be
994 merged. */
252b5132 995
c6e90b02 996bfd_reloc_status_type
11a2be4d
RS		 997_bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
998 asymbol *symbol, void *data,
999 asection *input_section, bfd *output_bfd,
1000 char **error_message)
c6e90b02 1001{
1049f94e 1002 bfd_boolean relocatable;
c6e90b02
TS		 1003 bfd_reloc_status_type ret;
1004 bfd_vma gp;
252b5132 1005
254f0426
MR		 1006 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
1007 if (reloc_entry->howto->type == R_MIPS_LITERAL
1008 && output_bfd != NULL
1009 && (symbol->flags & BSF_SECTION_SYM) == 0
1010 && (symbol->flags & BSF_LOCAL) != 0)
1011 {
1012 *error_message = (char *)
1013 _("literal relocation occurs for an external symbol");
1014 return bfd_reloc_outofrange;
1015 }
1016
11a2be4d 1017 if (output_bfd != NULL)
1049f94e 1018 relocatable = TRUE;
c6e90b02
TS		 1019 else
1020 {
1049f94e 1021 relocatable = FALSE;
c6e90b02
TS		 1022 output_bfd = symbol->section->output_section->owner;
1023 }
252b5132 1024
1049f94e 1025 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
c6e90b02
TS		 1026 &gp);
1027 if (ret != bfd_reloc_ok)
1028 return ret;
252b5132 1029
c6e90b02 1030 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1049f94e 1031 input_section, relocatable,
c6e90b02
TS		 1032 data, gp);
1033}
252b5132 1034
cb7394f2
TS		 1035/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1036 become the offset from the gp register. */
252b5132 1037
c6e90b02 1038static bfd_reloc_status_type
11a2be4d
RS		 1039mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1040 void *data, asection *input_section, bfd *output_bfd,
1041 char **error_message)
c6e90b02 1042{
1049f94e 1043 bfd_boolean relocatable;
c6e90b02
TS		 1044 bfd_reloc_status_type ret;
1045 bfd_vma gp;
252b5132 1046
765f2ef6
MR		 1047 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1048 if (output_bfd != NULL
1049 && (symbol->flags & BSF_SECTION_SYM) == 0
1050 && (symbol->flags & BSF_LOCAL) != 0)
1051 {
1052 *error_message = (char *)
1053 _("32bits gp relative relocation occurs for an external symbol");
1054 return bfd_reloc_outofrange;
1055 }
1056
11a2be4d 1057 if (output_bfd != NULL)
1049f94e 1058 relocatable = TRUE;
c6e90b02
TS		 1059 else
1060 {
1049f94e 1061 relocatable = FALSE;
c6e90b02 1062 output_bfd = symbol->section->output_section->owner;
c6e90b02 1063 }
252b5132 1064
1049f94e 1065 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
a7ebbfdf
TS		 1066 error_message, &gp);
1067 if (ret != bfd_reloc_ok)
1068 return ret;
1069
c6e90b02 1070 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1049f94e 1071 relocatable, data, gp);
c6e90b02 1072}
252b5132 1073
c6e90b02 1074static bfd_reloc_status_type
11a2be4d
RS		 1075gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1076 asection *input_section, bfd_boolean relocatable,
1077 void *data, bfd_vma gp)
c6e90b02
TS		 1078{
1079 bfd_vma relocation;
a7ebbfdf 1080 bfd_vma val;
252b5132 1081
c6e90b02
TS		 1082 if (bfd_is_com_section (symbol->section))
1083 relocation = 0;
1084 else
1085 relocation = symbol->value;
252b5132 1086
c6e90b02
TS		 1087 relocation += symbol->section->output_section->vma;
1088 relocation += symbol->section->output_offset;
252b5132 1089
07515404 1090 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
c6e90b02 1091 return bfd_reloc_outofrange;
252b5132 1092
c6e90b02 1093 /* Set val to the offset into the section or symbol. */
a7ebbfdf
TS		 1094 val = reloc_entry->addend;
1095
1096 if (reloc_entry->howto->partial_inplace)
1097 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
252b5132 1098
c6e90b02 1099 /* Adjust val for the final section location and GP value. If we
1049f94e 1100 are producing relocatable output, we don't want to do this for
c6e90b02 1101 an external symbol. */
1049f94e 1102 if (! relocatable
c6e90b02
TS		 1103 || (symbol->flags & BSF_SECTION_SYM) != 0)
1104 val += relocation - gp;
252b5132 1105
a7ebbfdf
TS		 1106 if (reloc_entry->howto->partial_inplace)
1107 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1108 else
1109 reloc_entry->addend = val;
c6142e5d 1110
1049f94e 1111 if (relocatable)
c6e90b02 1112 reloc_entry->address += input_section->output_offset;
252b5132 1113
c6e90b02 1114 return bfd_reloc_ok;
252b5132
RH		 1115}
1116
c6e90b02
TS		 1117/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1118 generated when addresses are 64 bits. The upper 32 bits are a simple
1119 sign extension. */
7403cb63 1120
c6e90b02 1121static bfd_reloc_status_type
30ac9238
RS		 1122mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
1123 asymbol *symbol ATTRIBUTE_UNUSED,
1124 void *data, asection *input_section,
1125 bfd *output_bfd, char **error_message)
7403cb63 1126{
c6e90b02
TS		 1127 bfd_reloc_status_type r;
1128 arelent reloc32;
1129 unsigned long val;
1130 bfd_size_type addr;
7403cb63 1131
c6e90b02
TS		 1132 /* Do a normal 32 bit relocation on the lower 32 bits. */
1133 reloc32 = *reloc_entry;
1134 if (bfd_big_endian (abfd))
1135 reloc32.address += 4;
1136 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1137 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1138 output_bfd, error_message);
be3ccd9c 1139
c6e90b02
TS		 1140 /* Sign extend into the upper 32 bits. */
1141 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1142 if ((val & 0x80000000) != 0)
1143 val = 0xffffffff;
1144 else
1145 val = 0;
1146 addr = reloc_entry->address;
1147 if (bfd_little_endian (abfd))
1148 addr += 4;
11a2be4d 1149 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
c6e90b02
TS		 1150
1151 return r;
7403cb63
MM		 1152}
1153
c6e90b02 1154/* Handle a mips16 GP relative reloc. */
252b5132 1155
c6e90b02 1156static bfd_reloc_status_type
11a2be4d
RS		 1157mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1158 void *data, asection *input_section, bfd *output_bfd,
1159 char **error_message)
c6e90b02 1160{
1049f94e 1161 bfd_boolean relocatable;
c6e90b02 1162 bfd_reloc_status_type ret;
d6f16593 1163 bfd_byte *location;
c6e90b02 1164 bfd_vma gp;
252b5132 1165
a7ebbfdf
TS		 1166 /* If we're relocating, and this is an external symbol, we don't want
1167 to change anything. */
c6e90b02
TS		 1168 if (output_bfd != NULL
1169 && (symbol->flags & BSF_SECTION_SYM) == 0
a7ebbfdf 1170 && (symbol->flags & BSF_LOCAL) != 0)
c6e90b02
TS		 1171 {
1172 reloc_entry->address += input_section->output_offset;
1173 return bfd_reloc_ok;
1174 }
252b5132 1175
c6e90b02 1176 if (output_bfd != NULL)
1049f94e 1177 relocatable = TRUE;
c6e90b02
TS		 1178 else
1179 {
1049f94e 1180 relocatable = FALSE;
c6e90b02 1181 output_bfd = symbol->section->output_section->owner;
252b5132
RH		 1182 }
1183
1049f94e 1184 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
c6e90b02
TS		 1185 &gp);
1186 if (ret != bfd_reloc_ok)
1187 return ret;
252b5132 1188
d6f16593
MR		 1189 location = (bfd_byte *) data + reloc_entry->address;
1190 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1191 location);
1192 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1193 input_section, relocatable,
1194 data, gp);
1195 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1196 location);
a7ebbfdf 1197
d6f16593 1198 return ret;
c6e90b02 1199}
7403cb63 1200
c6e90b02 1201/* A mapping from BFD reloc types to MIPS ELF reloc types. */
252b5132 1202
c6e90b02 1203struct elf_reloc_map {
cb7394f2
TS		 1204 bfd_reloc_code_real_type bfd_val;
1205 enum elf_mips_reloc_type elf_val;
c6e90b02 1206};
252b5132 1207
c6e90b02
TS		 1208static const struct elf_reloc_map mips_reloc_map[] =
1209{
28458e7e 1210 { BFD_RELOC_NONE, R_MIPS_NONE },
c6e90b02
TS		 1211 { BFD_RELOC_16, R_MIPS_16 },
1212 { BFD_RELOC_32, R_MIPS_32 },
cb7394f2 1213 /* There is no BFD reloc for R_MIPS_REL32. */
c6e90b02
TS		 1214 { BFD_RELOC_64, R_MIPS_64 },
1215 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1216 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1217 { BFD_RELOC_LO16, R_MIPS_LO16 },
1218 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1219 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1220 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
bad36eac 1221 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
c6e90b02
TS		 1222 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1223 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1224 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1225 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1226 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1227 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1228 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1229 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1230 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
0f20cc35
DJ		 1231 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
1232 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
1233 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
1234 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
1235 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
1236 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
1237 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
1238 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
1239 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
1240 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
1241 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
1242 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
1243 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
1244 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
c6e90b02 1245};
252b5132 1246
d6f16593
MR		 1247static const struct elf_reloc_map mips16_reloc_map[] =
1248{
1249 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
1250 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
738e5348
RS		 1251 { BFD_RELOC_MIPS16_GOT16, R_MIPS16_GOT16 - R_MIPS16_min },
1252 { BFD_RELOC_MIPS16_CALL16, R_MIPS16_CALL16 - R_MIPS16_min },
d6f16593
MR		 1253 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
1254 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
1255};
1256
c6e90b02 1257/* Given a BFD reloc type, return a howto structure. */
252b5132 1258
c6e90b02 1259static reloc_howto_type *
11a2be4d 1260bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
252b5132 1261{
c6e90b02 1262 unsigned int i;
cb7394f2 1263 reloc_howto_type *howto_table = elf_mips_howto_table_rel;
d6f16593 1264 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
252b5132 1265
cb7394f2
TS		 1266 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
1267 i++)
252b5132 1268 {
cb7394f2
TS		 1269 if (mips_reloc_map[i].bfd_val == code)
1270 return &howto_table[(int) mips_reloc_map[i].elf_val];
252b5132
RH		 1271 }
1272
d6f16593
MR		 1273 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
1274 i++)
1275 {
1276 if (mips16_reloc_map[i].bfd_val == code)
1277 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
1278 }
1279
c6e90b02 1280 switch (code)
252b5132 1281 {
c6e90b02
TS		 1282 default:
1283 bfd_set_error (bfd_error_bad_value);
1284 return NULL;
252b5132 1285
c6e90b02
TS		 1286 case BFD_RELOC_CTOR:
1287 /* We need to handle BFD_RELOC_CTOR specially.
1288 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
69931e60
AO		 1289 size of addresses of the ABI. */
1290 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
1291 | E_MIPS_ABI_EABI64)) != 0)
c6e90b02 1292 return &elf_mips_ctor64_howto;
69931e60
AO		 1293 else
1294 return &howto_table[(int) R_MIPS_32];
252b5132 1295
c6e90b02
TS		 1296 case BFD_RELOC_VTABLE_INHERIT:
1297 return &elf_mips_gnu_vtinherit_howto;
1298 case BFD_RELOC_VTABLE_ENTRY:
1299 return &elf_mips_gnu_vtentry_howto;
092dcd75
CD		 1300 case BFD_RELOC_32_PCREL:
1301 return &elf_mips_gnu_pcrel32;
c6e90b02
TS		 1302 }
1303}
252b5132 1304
157090f7
AM		 1305static reloc_howto_type *
1306bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1307 const char *r_name)
1308{
1309 unsigned int i;
1310
1311 for (i = 0;
1312 i < (sizeof (elf_mips_howto_table_rel)
1313 / sizeof (elf_mips_howto_table_rel[0]));
1314 i++)
1315 if (elf_mips_howto_table_rel[i].name != NULL
1316 && strcasecmp (elf_mips_howto_table_rel[i].name, r_name) == 0)
1317 return &elf_mips_howto_table_rel[i];
1318
1319 for (i = 0;
1320 i < (sizeof (elf_mips16_howto_table_rel)
1321 / sizeof (elf_mips16_howto_table_rel[0]));
1322 i++)
1323 if (elf_mips16_howto_table_rel[i].name != NULL
1324 && strcasecmp (elf_mips16_howto_table_rel[i].name, r_name) == 0)
1325 return &elf_mips16_howto_table_rel[i];
1326
1327 if (strcasecmp (elf_mips_gnu_pcrel32.name, r_name) == 0)
1328 return &elf_mips_gnu_pcrel32;
1329 if (strcasecmp (elf_mips_gnu_rel16_s2.name, r_name) == 0)
1330 return &elf_mips_gnu_rel16_s2;
1331 if (strcasecmp (elf_mips_gnu_vtinherit_howto.name, r_name) == 0)
1332 return &elf_mips_gnu_vtinherit_howto;
1333 if (strcasecmp (elf_mips_gnu_vtentry_howto.name, r_name) == 0)
1334 return &elf_mips_gnu_vtentry_howto;
1335
1336 return NULL;
1337}
1338
947216bf 1339/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
252b5132 1340
c6e90b02 1341static reloc_howto_type *
11a2be4d
RS		 1342mips_elf32_rtype_to_howto (unsigned int r_type,
1343 bfd_boolean rela_p ATTRIBUTE_UNUSED)
c6e90b02
TS		 1344{
1345 switch (r_type)
1346 {
c6e90b02
TS		 1347 case R_MIPS_GNU_VTINHERIT:
1348 return &elf_mips_gnu_vtinherit_howto;
c6e90b02
TS		 1349 case R_MIPS_GNU_VTENTRY:
1350 return &elf_mips_gnu_vtentry_howto;
c6e90b02
TS		 1351 case R_MIPS_GNU_REL16_S2:
1352 return &elf_mips_gnu_rel16_s2;
092dcd75
CD		 1353 case R_MIPS_PC32:
1354 return &elf_mips_gnu_pcrel32;
c6e90b02 1355 default:
d6f16593
MR		 1356 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
1357 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
c6e90b02
TS		 1358 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1359 return &elf_mips_howto_table_rel[r_type];
1360 }
1361}
252b5132 1362
947216bf 1363/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
252b5132 1364
c6e90b02 1365static void
11a2be4d 1366mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
c6e90b02 1367{
0a44bf69 1368 const struct elf_backend_data *bed;
c6e90b02 1369 unsigned int r_type;
252b5132 1370
c6e90b02 1371 r_type = ELF32_R_TYPE (dst->r_info);
0a44bf69
RS		 1372 bed = get_elf_backend_data (abfd);
1373 cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE);
252b5132 1374
c6e90b02
TS		 1375 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1376 value for the object file. We get the addend now, rather than
1377 when we do the relocation, because the symbol manipulations done
1378 by the linker may cause us to lose track of the input BFD. */
1379 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1380 && (r_type == (unsigned int) R_MIPS_GPREL16
1381 || r_type == (unsigned int) R_MIPS_LITERAL))
1382 cache_ptr->addend = elf_gp (abfd);
1383}
5499724a 1384
947216bf 1385/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
252b5132 1386
c6e90b02 1387static void
11a2be4d 1388mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
c6e90b02 1389{
947216bf 1390 mips_info_to_howto_rel (abfd, cache_ptr, dst);
252b5132 1391
c6e90b02 1392 /* If we ever need to do any extra processing with dst->r_addend
947216bf 1393 (the field omitted in an Elf_Internal_Rel) we can do it here. */
c6e90b02
TS		 1394}
1395\f
1396/* Determine whether a symbol is global for the purposes of splitting
1397 the symbol table into global symbols and local symbols. At least
1398 on Irix 5, this split must be between section symbols and all other
1399 symbols. On most ELF targets the split is between static symbols
1400 and externally visible symbols. */
252b5132 1401
b34976b6 1402static bfd_boolean
11a2be4d 1403mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
c6e90b02
TS		 1404{
1405 if (SGI_COMPAT (abfd))
1406 return (sym->flags & BSF_SECTION_SYM) == 0;
1407 else
1408 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1409 || bfd_is_und_section (bfd_get_section (sym))
1410 || bfd_is_com_section (bfd_get_section (sym)));
1411}
1412\f
1413/* Set the right machine number for a MIPS ELF file. */
7403cb63 1414
b34976b6 1415static bfd_boolean
11a2be4d 1416mips_elf32_object_p (bfd *abfd)
c6e90b02
TS		 1417{
1418 unsigned long mach;
103186c6 1419
c6e90b02
TS		 1420 /* Irix 5 and 6 are broken. Object file symbol tables are not always
1421 sorted correctly such that local symbols precede global symbols,
1422 and the sh_info field in the symbol table is not always right. */
1423 if (SGI_COMPAT (abfd))
b34976b6 1424 elf_bad_symtab (abfd) = TRUE;
103186c6 1425
8a397dad 1426 if (ABI_N32_P (abfd))
b34976b6 1427 return FALSE;
8a397dad 1428
c6e90b02
TS		 1429 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
1430 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
252b5132 1431
b34976b6 1432 return TRUE;
c6e90b02
TS		 1433}
1434\f
1435/* MIPS ELF local labels start with '$', not 'L'. */
252b5132 1436
b34976b6 1437static bfd_boolean
11a2be4d 1438mips_elf_is_local_label_name (bfd *abfd, const char *name)
c6e90b02
TS		 1439{
1440 if (name[0] == '$')
b34976b6 1441 return TRUE;
252b5132 1442
c6e90b02
TS		 1443 /* On Irix 6, the labels go back to starting with '.', so we accept
1444 the generic ELF local label syntax as well. */
1445 return _bfd_elf_is_local_label_name (abfd, name);
252b5132
RH		 1446}
1447\f
c6e90b02 1448/* Support for core dump NOTE sections. */
b34976b6 1449static bfd_boolean
11a2be4d 1450elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
bb0082d6
AM		 1451{
1452 int offset;
eea6121a 1453 unsigned int size;
bb0082d6
AM		 1454
1455 switch (note->descsz)
1456 {
1457 default:
b34976b6 1458 return FALSE;
bb0082d6
AM		 1459
1460 case 256: /* Linux/MIPS */
1461 /* pr_cursig */
1462 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1463
1464 /* pr_pid */
1465 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1466
1467 /* pr_reg */
1468 offset = 72;
eea6121a 1469 size = 180;
bb0082d6
AM		 1470
1471 break;
1472 }
1473
1474 /* Make a ".reg/999" section. */
936e320b 1475 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 1476 size, note->descpos + offset);
bb0082d6
AM		 1477}
1478
b34976b6 1479static bfd_boolean
11a2be4d 1480elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
bb0082d6
AM		 1481{
1482 switch (note->descsz)
1483 {
1484 default:
b34976b6 1485 return FALSE;
bb0082d6
AM		 1486
1487 case 128: /* Linux/MIPS elf_prpsinfo */
1488 elf_tdata (abfd)->core_program
1489 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1490 elf_tdata (abfd)->core_command
1491 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1492 }
1493
1494 /* Note that for some reason, a spurious space is tacked
1495 onto the end of the args in some (at least one anyway)
1496 implementations, so strip it off if it exists. */
1497
1498 {
1499 char *command = elf_tdata (abfd)->core_command;
1500 int n = strlen (command);
1501
1502 if (0 < n && command[n - 1] == ' ')
1503 command[n - 1] = '\0';
1504 }
1505
b34976b6 1506 return TRUE;
bb0082d6
AM		 1507}
1508\f
c6e90b02
TS		 1509/* Depending on the target vector we generate some version of Irix
1510 executables or "normal" MIPS ELF ABI executables. */
1511static irix_compat_t
11a2be4d 1512elf32_mips_irix_compat (bfd *abfd)
c6e90b02 1513{
cb7394f2
TS		 1514 if ((abfd->xvec == &bfd_elf32_bigmips_vec)
1515 || (abfd->xvec == &bfd_elf32_littlemips_vec))
c6e90b02 1516 return ict_irix5;
cb7394f2
TS		 1517 else
1518 return ict_none;
c6e90b02 1519}
73d074b4 1520\f
252b5132
RH		 1521/* ECOFF swapping routines. These are used when dealing with the
1522 .mdebug section, which is in the ECOFF debugging format. */
be3ccd9c 1523static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
252b5132
RH		 1524 /* Symbol table magic number. */
1525 magicSym,
1526 /* Alignment of debugging information. E.g., 4. */
1527 4,
1528 /* Sizes of external symbolic information. */
1529 sizeof (struct hdr_ext),
1530 sizeof (struct dnr_ext),
1531 sizeof (struct pdr_ext),
1532 sizeof (struct sym_ext),
1533 sizeof (struct opt_ext),
1534 sizeof (struct fdr_ext),
1535 sizeof (struct rfd_ext),
1536 sizeof (struct ext_ext),
1537 /* Functions to swap in external symbolic data. */
1538 ecoff_swap_hdr_in,
1539 ecoff_swap_dnr_in,
1540 ecoff_swap_pdr_in,
1541 ecoff_swap_sym_in,
1542 ecoff_swap_opt_in,
1543 ecoff_swap_fdr_in,
1544 ecoff_swap_rfd_in,
1545 ecoff_swap_ext_in,
1546 _bfd_ecoff_swap_tir_in,
1547 _bfd_ecoff_swap_rndx_in,
1548 /* Functions to swap out external symbolic data. */
1549 ecoff_swap_hdr_out,
1550 ecoff_swap_dnr_out,
1551 ecoff_swap_pdr_out,
1552 ecoff_swap_sym_out,
1553 ecoff_swap_opt_out,
1554 ecoff_swap_fdr_out,
1555 ecoff_swap_rfd_out,
1556 ecoff_swap_ext_out,
1557 _bfd_ecoff_swap_tir_out,
1558 _bfd_ecoff_swap_rndx_out,
1559 /* Function to read in symbolic data. */
1560 _bfd_mips_elf_read_ecoff_info
1561};
1562\f
252b5132
RH		 1563#define ELF_ARCH bfd_arch_mips
1564#define ELF_MACHINE_CODE EM_MIPS
1565
b34976b6
AM		 1566#define elf_backend_collect TRUE
1567#define elf_backend_type_change_ok TRUE
1568#define elf_backend_can_gc_sections TRUE
3f830999 1569#define elf_info_to_howto mips_info_to_howto_rela
252b5132
RH		 1570#define elf_info_to_howto_rel mips_info_to_howto_rel
1571#define elf_backend_sym_is_global mips_elf_sym_is_global
c6e90b02 1572#define elf_backend_object_p mips_elf32_object_p
d75bc93d
TS		 1573#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
1574#define elf_backend_section_processing _bfd_mips_elf_section_processing
103186c6 1575#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
252b5132
RH		 1576#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
1577#define elf_backend_section_from_bfd_section \
1578 _bfd_mips_elf_section_from_bfd_section
103186c6 1579#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
d75bc93d
TS		 1580#define elf_backend_link_output_symbol_hook \
1581 _bfd_mips_elf_link_output_symbol_hook
103186c6
MM		 1582#define elf_backend_create_dynamic_sections \
1583 _bfd_mips_elf_create_dynamic_sections
1584#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
8992f0d7
TS		 1585#define elf_backend_merge_symbol_attribute \
1586 _bfd_mips_elf_merge_symbol_attribute
ad9563d6 1587#define elf_backend_get_target_dtag _bfd_mips_elf_get_target_dtag
103186c6
MM		 1588#define elf_backend_adjust_dynamic_symbol \
1589 _bfd_mips_elf_adjust_dynamic_symbol
1590#define elf_backend_always_size_sections \
1591 _bfd_mips_elf_always_size_sections
1592#define elf_backend_size_dynamic_sections \
1593 _bfd_mips_elf_size_dynamic_sections
74541ad4 1594#define elf_backend_init_index_section _bfd_elf_init_1_index_section
103186c6 1595#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
103186c6
MM		 1596#define elf_backend_finish_dynamic_symbol \
1597 _bfd_mips_elf_finish_dynamic_symbol
1598#define elf_backend_finish_dynamic_sections \
1599 _bfd_mips_elf_finish_dynamic_sections
d75bc93d
TS		 1600#define elf_backend_final_write_processing \
1601 _bfd_mips_elf_final_write_processing
1602#define elf_backend_additional_program_headers \
1603 _bfd_mips_elf_additional_program_headers
1604#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
103186c6
MM		 1605#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
1606#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
8a20f077
UC		 1607#define elf_backend_copy_indirect_symbol \
1608 _bfd_mips_elf_copy_indirect_symbol
c6e90b02
TS		 1609#define elf_backend_grok_prstatus elf32_mips_grok_prstatus
1610#define elf_backend_grok_psinfo elf32_mips_grok_psinfo
d75bc93d
TS		 1611#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
1612
1613#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
d75bc93d
TS		 1614#define elf_backend_may_use_rel_p 1
1615#define elf_backend_may_use_rela_p 0
1616#define elf_backend_default_use_rela_p 0
b34976b6 1617#define elf_backend_sign_extend_vma TRUE
b305ef96 1618
d01414a5 1619#define elf_backend_discard_info _bfd_mips_elf_discard_info
73d074b4 1620#define elf_backend_ignore_discarded_relocs \
53bfd6b4 1621 _bfd_mips_elf_ignore_discarded_relocs
20163277 1622#define elf_backend_write_section _bfd_mips_elf_write_section
c6e90b02
TS		 1623#define elf_backend_mips_irix_compat elf32_mips_irix_compat
1624#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
252b5132
RH		 1625#define bfd_elf32_bfd_is_local_label_name \
1626 mips_elf_is_local_label_name
1627#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
4ab527b0 1628#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
f0abc2a1 1629#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
252b5132 1630#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
c6e90b02
TS		 1631#define bfd_elf32_bfd_get_relocated_section_contents \
1632 _bfd_elf_mips_get_relocated_section_contents
d5eaccd7 1633#define bfd_elf32_mkobject _bfd_mips_elf_mkobject
252b5132 1634#define bfd_elf32_bfd_link_hash_table_create \
103186c6
MM		 1635 _bfd_mips_elf_link_hash_table_create
1636#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
252b5132
RH		 1637#define bfd_elf32_bfd_merge_private_bfd_data \
1638 _bfd_mips_elf_merge_private_bfd_data
1639#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
1640#define bfd_elf32_bfd_print_private_bfd_data \
1641 _bfd_mips_elf_print_private_bfd_data
e364195d 1642
d75bc93d
TS		 1643/* Support for SGI-ish mips targets. */
1644#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
1645#define TARGET_LITTLE_NAME "elf32-littlemips"
1646#define TARGET_BIG_SYM bfd_elf32_bigmips_vec
1647#define TARGET_BIG_NAME "elf32-bigmips"
1648
4301eeb1
MR		 1649/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
1650 a value of 0x1000, and we are compatible. */
1651#define ELF_MAXPAGESIZE 0x1000
24718e3b 1652#define ELF_COMMONPAGESIZE 0x1000
4301eeb1 1653
d75bc93d 1654#include "elf32-target.h"
e364195d 1655
d75bc93d 1656/* Support for traditional mips targets. */
e364195d
UC		 1657#undef TARGET_LITTLE_SYM
1658#undef TARGET_LITTLE_NAME
1659#undef TARGET_BIG_SYM
1660#undef TARGET_BIG_NAME
1661
4301eeb1 1662#undef ELF_MAXPAGESIZE
7fd91fe0 1663#undef ELF_COMMONPAGESIZE
4301eeb1 1664
e364195d
UC		 1665#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
1666#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
1667#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
1668#define TARGET_BIG_NAME "elf32-tradbigmips"
1669
7fd91fe0
TS		 1670/* The MIPS ABI says at Page 5-1:
1671 Virtual addresses and file offsets for MIPS segments are congruent
1672 modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
1673 is the maximum page size, the files are suitable for paging
1674 regardless of physical page size. */
4301eeb1 1675#define ELF_MAXPAGESIZE 0x10000
7fd91fe0 1676#define ELF_COMMONPAGESIZE 0x1000
4301eeb1
MR		 1677#define elf32_bed elf32_tradbed
1678
c6e90b02 1679/* Include the target file again for this target. */
e364195d 1680#include "elf32-target.h"
0a44bf69
RS		 1681
1682
1683/* Specific to VxWorks. */
1684static reloc_howto_type mips_vxworks_copy_howto_rela =
1685 HOWTO (R_MIPS_COPY, /* type */
1686 0, /* rightshift */
1687 2, /* size (0 = byte, 1 = short, 2 = long) */
1688 32, /* bitsize */
1689 FALSE, /* pc_relative */
1690 0, /* bitpos */
1691 complain_overflow_bitfield, /* complain_on_overflow */
1692 bfd_elf_generic_reloc, /* special_function */
1693 "R_MIPS_COPY", /* name */
1694 FALSE, /* partial_inplace */
1695 0x0, /* src_mask */
1696 0x0, /* dst_mask */
1697 FALSE); /* pcrel_offset */
1698
1699/* Specific to VxWorks. */
1700static reloc_howto_type mips_vxworks_jump_slot_howto_rela =
1701 HOWTO (R_MIPS_JUMP_SLOT, /* type */
1702 0, /* rightshift */
1703 2, /* size (0 = byte, 1 = short, 2 = long) */
1704 32, /* bitsize */
1705 FALSE, /* pc_relative */
1706 0, /* bitpos */
1707 complain_overflow_bitfield, /* complain_on_overflow */
1708 bfd_elf_generic_reloc, /* special_function */
1709 "R_MIPS_JUMP_SLOT", /* name */
1710 FALSE, /* partial_inplace */
1711 0x0, /* src_mask */
1712 0x0, /* dst_mask */
1713 FALSE); /* pcrel_offset */
1714
1715/* Implement elf_backend_bfd_reloc_type_lookup for VxWorks. */
1716
1717static reloc_howto_type *
1718mips_vxworks_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1719{
1720 switch (code)
1721 {
1722 case BFD_RELOC_MIPS_COPY:
1723 return &mips_vxworks_copy_howto_rela;
1724 case BFD_RELOC_MIPS_JUMP_SLOT:
1725 return &mips_vxworks_jump_slot_howto_rela;
1726 default:
1727 return bfd_elf32_bfd_reloc_type_lookup (abfd, code);
1728 }
1729}
1730
157090f7
AM		 1731static reloc_howto_type *
1732mips_vxworks_bfd_reloc_name_lookup (bfd *abfd, const char *r_name)
1733{
1734 if (strcasecmp (mips_vxworks_copy_howto_rela.name, r_name) == 0)
1735 return &mips_vxworks_copy_howto_rela;
1736 if (strcasecmp (mips_vxworks_jump_slot_howto_rela.name, r_name) == 0)
1737 return &mips_vxworks_jump_slot_howto_rela;
1738
1739 return bfd_elf32_bfd_reloc_name_lookup (abfd, r_name);
1740}
1741
0a44bf69
RS		 1742/* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */
1743
1744static reloc_howto_type *
1745mips_vxworks_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
1746{
1747 switch (r_type)
1748 {
1749 case R_MIPS_COPY:
1750 return &mips_vxworks_copy_howto_rela;
1751 case R_MIPS_JUMP_SLOT:
1752 return &mips_vxworks_jump_slot_howto_rela;
1753 default:
1754 return mips_elf32_rtype_to_howto (r_type, rela_p);
1755 }
1756}
1757
1758/* Implement elf_backend_final_write_processing for VxWorks. */
1759
1760static void
1761mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
1762{
1763 _bfd_mips_elf_final_write_processing (abfd, linker);
1764 elf_vxworks_final_write_processing (abfd, linker);
1765}
1766
1767#undef TARGET_LITTLE_SYM
1768#undef TARGET_LITTLE_NAME
1769#undef TARGET_BIG_SYM
1770#undef TARGET_BIG_NAME
1771
7fd91fe0
TS		 1772#undef ELF_MAXPAGESIZE
1773#undef ELF_COMMONPAGESIZE
1774
0a44bf69
RS		 1775#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec
1776#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
1777#define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec
1778#define TARGET_BIG_NAME "elf32-bigmips-vxworks"
1779
1780#undef elf32_bed
1781#define elf32_bed elf32_mips_vxworks_bed
1782
0a44bf69 1783#define ELF_MAXPAGESIZE 0x1000
7fd91fe0 1784#define ELF_COMMONPAGESIZE 0x1000
0a44bf69
RS		 1785
1786#undef elf_backend_want_got_plt
1787#define elf_backend_want_got_plt 1
1788#undef elf_backend_want_plt_sym
1789#define elf_backend_want_plt_sym 1
1790#undef elf_backend_got_symbol_offset
1791#define elf_backend_got_symbol_offset 0
1792#undef elf_backend_want_dynbss
1793#define elf_backend_want_dynbss 1
1794#undef elf_backend_may_use_rel_p
1795#define elf_backend_may_use_rel_p 0
1796#undef elf_backend_may_use_rela_p
1797#define elf_backend_may_use_rela_p 1
1798#undef elf_backend_default_use_rela_p
1799#define elf_backend_default_use_rela_p 1
1800#undef elf_backend_got_header_size
1801#define elf_backend_got_header_size (4 * 3)
1802#undef elf_backend_plt_readonly
1803#define elf_backend_plt_readonly 1
1804
1805#undef bfd_elf32_bfd_reloc_type_lookup
1806#define bfd_elf32_bfd_reloc_type_lookup \
1807 mips_vxworks_bfd_reloc_type_lookup
157090f7
AM		 1808#undef bfd_elf32_bfd_reloc_name_lookup
1809#define bfd_elf32_bfd_reloc_name_lookup \
1810 mips_vxworks_bfd_reloc_name_lookup
0a44bf69
RS		 1811#undef elf_backend_mips_rtype_to_howto
1812#define elf_backend_mips_rtype_to_howto \
1813 mips_vxworks_rtype_to_howto
1814#undef elf_backend_adjust_dynamic_symbol
1815#define elf_backend_adjust_dynamic_symbol \
1816 _bfd_mips_vxworks_adjust_dynamic_symbol
1817#undef elf_backend_finish_dynamic_symbol
1818#define elf_backend_finish_dynamic_symbol \
1819 _bfd_mips_vxworks_finish_dynamic_symbol
1820#undef bfd_elf32_bfd_link_hash_table_create
1821#define bfd_elf32_bfd_link_hash_table_create \
1822 _bfd_mips_vxworks_link_hash_table_create
1823#undef elf_backend_add_symbol_hook
1824#define elf_backend_add_symbol_hook \
1825 elf_vxworks_add_symbol_hook
1826#undef elf_backend_link_output_symbol_hook
1827#define elf_backend_link_output_symbol_hook \
1828 elf_vxworks_link_output_symbol_hook
1829#undef elf_backend_emit_relocs
1830#define elf_backend_emit_relocs \
1831 elf_vxworks_emit_relocs
1832#undef elf_backend_final_write_processing
1833#define elf_backend_final_write_processing \
1834 mips_vxworks_final_write_processing
1835
1836#undef elf_backend_additional_program_headers
1837#undef elf_backend_modify_segment_map
1838#undef elf_backend_symbol_processing
1839/* NOTE: elf_backend_rela_normal is not defined for MIPS. */
1840
1841#include "elf32-target.h"
GDB Binutils - Deliverables
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