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[deliverable/binutils-gdb.git] / bfd / elf32-mips.c
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efcbd82c 1/* MIPS-specific support for 32-bit ELF
f0abc2a1 2 Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
0f20cc35 3 2003, 2004, 2005 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
RH		 11
12This file is part of BFD, the Binary File Descriptor library.
13
14This program is free software; you can redistribute it and/or modify
15it under the terms of the GNU General Public License as published by
16the Free Software Foundation; either version 2 of the License, or
17(at your option) any later version.
18
19This program is distributed in the hope that it will be useful,
20but WITHOUT ANY WARRANTY; without even the implied warranty of
21MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22GNU General Public License for more details.
23
24You should have received a copy of the GNU General Public License
25along with this program; if not, write to the Free Software
3e110533 26Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
252b5132
RH		 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"
c6e90b02 38#include "elfxx-mips.h"
252b5132 39#include "elf/mips.h"
0a44bf69 40#include "elf-vxworks.h"
252b5132
RH		 41
42/* Get the ECOFF swapping routines. */
43#include "coff/sym.h"
44#include "coff/symconst.h"
45#include "coff/internal.h"
46#include "coff/ecoff.h"
47#include "coff/mips.h"
23e2c83b 48#define ECOFF_SIGNED_32
252b5132
RH		 49#include "ecoffswap.h"
50
a7ebbfdf 51static bfd_reloc_status_type gprel32_with_gp
11a2be4d 52 (bfd *, asymbol *, arelent *, asection *, bfd_boolean, void *, bfd_vma);
c6e90b02 53static bfd_reloc_status_type mips_elf_gprel32_reloc
11a2be4d 54 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 55static bfd_reloc_status_type mips32_64bit_reloc
11a2be4d 56 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 57static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
11a2be4d 58 (bfd *, bfd_reloc_code_real_type);
c6e90b02 59static reloc_howto_type *mips_elf32_rtype_to_howto
11a2be4d 60 (unsigned int, bfd_boolean);
252b5132 61static void mips_info_to_howto_rel
11a2be4d 62 (bfd *, arelent *, Elf_Internal_Rela *);
3f830999 63static void mips_info_to_howto_rela
11a2be4d 64 (bfd *, arelent *, Elf_Internal_Rela *);
b34976b6 65static bfd_boolean mips_elf_sym_is_global
11a2be4d 66 (bfd *, asymbol *);
b34976b6 67static bfd_boolean mips_elf32_object_p
11a2be4d 68 (bfd *);
b34976b6 69static bfd_boolean mips_elf_is_local_label_name
11a2be4d 70 (bfd *, const char *);
252b5132 71static bfd_reloc_status_type mips16_gprel_reloc
11a2be4d 72 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 73static bfd_reloc_status_type mips_elf_final_gp
11a2be4d 74 (bfd *, asymbol *, bfd_boolean, char **, bfd_vma *);
b34976b6 75static bfd_boolean mips_elf_assign_gp
11a2be4d 76 (bfd *, bfd_vma *);
b34976b6 77static bfd_boolean elf32_mips_grok_prstatus
11a2be4d 78 (bfd *, Elf_Internal_Note *);
b34976b6 79static bfd_boolean elf32_mips_grok_psinfo
11a2be4d 80 (bfd *, Elf_Internal_Note *);
c6e90b02 81static irix_compat_t elf32_mips_irix_compat
11a2be4d 82 (bfd *);
252b5132 83
cb7394f2
TS		 84extern const bfd_target bfd_elf32_bigmips_vec;
85extern const bfd_target bfd_elf32_littlemips_vec;
adb76a3e 86
a94a7c1c 87/* Nonzero if ABFD is using the N32 ABI. */
a94a7c1c
MM		 88#define ABI_N32_P(abfd) \
89 ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
90
4e8a9624 91/* Whether we are trying to be compatible with IRIX at all. */
a94a7c1c 92#define SGI_COMPAT(abfd) \
c6e90b02 93 (elf32_mips_irix_compat (abfd) != ict_none)
103186c6 94
252b5132
RH		 95/* The number of local .got entries we reserve. */
96#define MIPS_RESERVED_GOTNO (2)
97
3f830999
MM		 98/* In case we're on a 32-bit machine, construct a 64-bit "-1" value
99 from smaller values. Start with zero, widen, *then* decrement. */
100#define MINUS_ONE (((bfd_vma)0) - 1)
101
d75bc93d
TS		 102/* The relocation table used for SHT_REL sections. */
103
104static reloc_howto_type elf_mips_howto_table_rel[] =
105{
106 /* No relocation. */
107 HOWTO (R_MIPS_NONE, /* type */
108 0, /* rightshift */
109 0, /* size (0 = byte, 1 = short, 2 = long) */
110 0, /* bitsize */
b34976b6 111 FALSE, /* pc_relative */
d75bc93d
TS		 112 0, /* bitpos */
113 complain_overflow_dont, /* complain_on_overflow */
30ac9238 114 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 115 "R_MIPS_NONE", /* name */
b34976b6 116 FALSE, /* partial_inplace */
d75bc93d
TS		 117 0, /* src_mask */
118 0, /* dst_mask */
b34976b6 119 FALSE), /* pcrel_offset */
d75bc93d
TS		 120
121 /* 16 bit relocation. */
122 HOWTO (R_MIPS_16, /* type */
123 0, /* rightshift */
124 2, /* size (0 = byte, 1 = short, 2 = long) */
125 16, /* bitsize */
b34976b6 126 FALSE, /* pc_relative */
d75bc93d
TS		 127 0, /* bitpos */
128 complain_overflow_signed, /* complain_on_overflow */
30ac9238 129 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 130 "R_MIPS_16", /* name */
b34976b6 131 TRUE, /* partial_inplace */
d75bc93d
TS		 132 0x0000ffff, /* src_mask */
133 0x0000ffff, /* dst_mask */
b34976b6 134 FALSE), /* pcrel_offset */
d75bc93d
TS		 135
136 /* 32 bit relocation. */
137 HOWTO (R_MIPS_32, /* type */
138 0, /* rightshift */
139 2, /* size (0 = byte, 1 = short, 2 = long) */
140 32, /* bitsize */
b34976b6 141 FALSE, /* pc_relative */
d75bc93d
TS		 142 0, /* bitpos */
143 complain_overflow_dont, /* complain_on_overflow */
30ac9238 144 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 145 "R_MIPS_32", /* name */
b34976b6 146 TRUE, /* partial_inplace */
d75bc93d
TS		 147 0xffffffff, /* src_mask */
148 0xffffffff, /* dst_mask */
b34976b6 149 FALSE), /* pcrel_offset */
d75bc93d
TS		 150
151 /* 32 bit symbol relative relocation. */
152 HOWTO (R_MIPS_REL32, /* type */
153 0, /* rightshift */
154 2, /* size (0 = byte, 1 = short, 2 = long) */
155 32, /* bitsize */
b34976b6 156 FALSE, /* pc_relative */
d75bc93d
TS		 157 0, /* bitpos */
158 complain_overflow_dont, /* complain_on_overflow */
30ac9238 159 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 160 "R_MIPS_REL32", /* name */
b34976b6 161 TRUE, /* partial_inplace */
d75bc93d
TS		 162 0xffffffff, /* src_mask */
163 0xffffffff, /* dst_mask */
b34976b6 164 FALSE), /* pcrel_offset */
d75bc93d
TS		 165
166 /* 26 bit jump address. */
167 HOWTO (R_MIPS_26, /* type */
168 2, /* rightshift */
169 2, /* size (0 = byte, 1 = short, 2 = long) */
170 26, /* bitsize */
b34976b6 171 FALSE, /* pc_relative */
d75bc93d
TS		 172 0, /* bitpos */
173 complain_overflow_dont, /* complain_on_overflow */
174 /* This needs complex overflow
175 detection, because the upper four
176 bits must match the PC + 4. */
30ac9238 177 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 178 "R_MIPS_26", /* name */
b34976b6 179 TRUE, /* partial_inplace */
d75bc93d
TS		 180 0x03ffffff, /* src_mask */
181 0x03ffffff, /* dst_mask */
b34976b6 182 FALSE), /* pcrel_offset */
d75bc93d
TS		 183
184 /* High 16 bits of symbol value. */
185 HOWTO (R_MIPS_HI16, /* type */
30ac9238 186 16, /* rightshift */
d75bc93d
TS		 187 2, /* size (0 = byte, 1 = short, 2 = long) */
188 16, /* bitsize */
b34976b6 189 FALSE, /* pc_relative */
d75bc93d
TS		 190 0, /* bitpos */
191 complain_overflow_dont, /* complain_on_overflow */
30ac9238 192 _bfd_mips_elf_hi16_reloc, /* special_function */
d75bc93d 193 "R_MIPS_HI16", /* name */
b34976b6 194 TRUE, /* partial_inplace */
d75bc93d
TS		 195 0x0000ffff, /* src_mask */
196 0x0000ffff, /* dst_mask */
b34976b6 197 FALSE), /* pcrel_offset */
d75bc93d
TS		 198
199 /* Low 16 bits of symbol value. */
200 HOWTO (R_MIPS_LO16, /* type */
201 0, /* rightshift */
202 2, /* size (0 = byte, 1 = short, 2 = long) */
203 16, /* bitsize */
b34976b6 204 FALSE, /* pc_relative */
d75bc93d
TS		 205 0, /* bitpos */
206 complain_overflow_dont, /* complain_on_overflow */
30ac9238 207 _bfd_mips_elf_lo16_reloc, /* special_function */
d75bc93d 208 "R_MIPS_LO16", /* name */
b34976b6 209 TRUE, /* partial_inplace */
d75bc93d
TS		 210 0x0000ffff, /* src_mask */
211 0x0000ffff, /* dst_mask */
b34976b6 212 FALSE), /* pcrel_offset */
d75bc93d
TS		 213
214 /* GP relative reference. */
215 HOWTO (R_MIPS_GPREL16, /* type */
216 0, /* rightshift */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
218 16, /* bitsize */
b34976b6 219 FALSE, /* pc_relative */
d75bc93d
TS		 220 0, /* bitpos */
221 complain_overflow_signed, /* complain_on_overflow */
c6e90b02 222 _bfd_mips_elf32_gprel16_reloc, /* special_function */
d75bc93d 223 "R_MIPS_GPREL16", /* name */
b34976b6 224 TRUE, /* partial_inplace */
d75bc93d
TS		 225 0x0000ffff, /* src_mask */
226 0x0000ffff, /* dst_mask */
b34976b6 227 FALSE), /* pcrel_offset */
d75bc93d
TS		 228
229 /* Reference to literal section. */
230 HOWTO (R_MIPS_LITERAL, /* type */
231 0, /* rightshift */
232 2, /* size (0 = byte, 1 = short, 2 = long) */
233 16, /* bitsize */
b34976b6 234 FALSE, /* pc_relative */
d75bc93d
TS		 235 0, /* bitpos */
236 complain_overflow_signed, /* complain_on_overflow */
c6e90b02 237 _bfd_mips_elf32_gprel16_reloc, /* special_function */
d75bc93d 238 "R_MIPS_LITERAL", /* name */
b34976b6 239 TRUE, /* partial_inplace */
d75bc93d
TS		 240 0x0000ffff, /* src_mask */
241 0x0000ffff, /* dst_mask */
b34976b6 242 FALSE), /* pcrel_offset */
d75bc93d
TS		 243
244 /* Reference to global offset table. */
245 HOWTO (R_MIPS_GOT16, /* type */
246 0, /* rightshift */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
248 16, /* bitsize */
b34976b6 249 FALSE, /* pc_relative */
d75bc93d
TS		 250 0, /* bitpos */
251 complain_overflow_signed, /* complain_on_overflow */
30ac9238 252 _bfd_mips_elf_got16_reloc, /* special_function */
d75bc93d 253 "R_MIPS_GOT16", /* name */
b34976b6 254 TRUE, /* partial_inplace */
d75bc93d
TS		 255 0x0000ffff, /* src_mask */
256 0x0000ffff, /* dst_mask */
b34976b6 257 FALSE), /* pcrel_offset */
d75bc93d 258
bad36eac
DJ		 259 /* 16 bit PC relative reference. Note that the ABI document has a typo
260 and claims R_MIPS_PC16 to be not rightshifted, rendering it useless.
261 We do the right thing here. */
d75bc93d 262 HOWTO (R_MIPS_PC16, /* type */
bad36eac 263 2, /* rightshift */
d75bc93d
TS		 264 2, /* size (0 = byte, 1 = short, 2 = long) */
265 16, /* bitsize */
b34976b6 266 TRUE, /* pc_relative */
d75bc93d
TS		 267 0, /* bitpos */
268 complain_overflow_signed, /* complain_on_overflow */
30ac9238 269 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 270 "R_MIPS_PC16", /* name */
b34976b6 271 TRUE, /* partial_inplace */
d75bc93d
TS		 272 0x0000ffff, /* src_mask */
273 0x0000ffff, /* dst_mask */
b34976b6 274 TRUE), /* pcrel_offset */
d75bc93d
TS		 275
276 /* 16 bit call through global offset table. */
277 HOWTO (R_MIPS_CALL16, /* type */
278 0, /* rightshift */
279 2, /* size (0 = byte, 1 = short, 2 = long) */
280 16, /* bitsize */
b34976b6 281 FALSE, /* pc_relative */
d75bc93d
TS		 282 0, /* bitpos */
283 complain_overflow_signed, /* complain_on_overflow */
30ac9238 284 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 285 "R_MIPS_CALL16", /* name */
b34976b6 286 TRUE, /* partial_inplace */
d75bc93d
TS		 287 0x0000ffff, /* src_mask */
288 0x0000ffff, /* dst_mask */
b34976b6 289 FALSE), /* pcrel_offset */
d75bc93d
TS		 290
291 /* 32 bit GP relative reference. */
292 HOWTO (R_MIPS_GPREL32, /* type */
293 0, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 32, /* bitsize */
b34976b6 296 FALSE, /* pc_relative */
d75bc93d
TS		 297 0, /* bitpos */
298 complain_overflow_dont, /* complain_on_overflow */
c6e90b02 299 mips_elf_gprel32_reloc, /* special_function */
d75bc93d 300 "R_MIPS_GPREL32", /* name */
b34976b6 301 TRUE, /* partial_inplace */
d75bc93d
TS		 302 0xffffffff, /* src_mask */
303 0xffffffff, /* dst_mask */
b34976b6 304 FALSE), /* pcrel_offset */
d75bc93d
TS		 305
306 /* The remaining relocs are defined on Irix 5, although they are
307 not defined by the ABI. */
308 EMPTY_HOWTO (13),
309 EMPTY_HOWTO (14),
310 EMPTY_HOWTO (15),
311
312 /* A 5 bit shift field. */
313 HOWTO (R_MIPS_SHIFT5, /* type */
314 0, /* rightshift */
315 2, /* size (0 = byte, 1 = short, 2 = long) */
316 5, /* bitsize */
b34976b6 317 FALSE, /* pc_relative */
d75bc93d
TS		 318 6, /* bitpos */
319 complain_overflow_bitfield, /* complain_on_overflow */
30ac9238 320 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 321 "R_MIPS_SHIFT5", /* name */
b34976b6 322 TRUE, /* partial_inplace */
d75bc93d
TS		 323 0x000007c0, /* src_mask */
324 0x000007c0, /* dst_mask */
b34976b6 325 FALSE), /* pcrel_offset */
d75bc93d
TS		 326
327 /* A 6 bit shift field. */
328 /* FIXME: This is not handled correctly; a special function is
329 needed to put the most significant bit in the right place. */
330 HOWTO (R_MIPS_SHIFT6, /* type */
331 0, /* rightshift */
332 2, /* size (0 = byte, 1 = short, 2 = long) */
333 6, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
d75bc93d
TS		 335 6, /* bitpos */
336 complain_overflow_bitfield, /* complain_on_overflow */
30ac9238 337 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 338 "R_MIPS_SHIFT6", /* name */
b34976b6 339 TRUE, /* partial_inplace */
d75bc93d
TS		 340 0x000007c4, /* src_mask */
341 0x000007c4, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
d75bc93d
TS		 343
344 /* A 64 bit relocation. */
345 HOWTO (R_MIPS_64, /* type */
346 0, /* rightshift */
347 4, /* size (0 = byte, 1 = short, 2 = long) */
348 64, /* bitsize */
b34976b6 349 FALSE, /* pc_relative */
d75bc93d
TS		 350 0, /* bitpos */
351 complain_overflow_dont, /* complain_on_overflow */
352 mips32_64bit_reloc, /* special_function */
353 "R_MIPS_64", /* name */
b34976b6 354 TRUE, /* partial_inplace */
d75bc93d
TS		 355 MINUS_ONE, /* src_mask */
356 MINUS_ONE, /* dst_mask */
b34976b6 357 FALSE), /* pcrel_offset */
d75bc93d
TS		 358
359 /* Displacement in the global offset table. */
360 HOWTO (R_MIPS_GOT_DISP, /* type */
361 0, /* rightshift */
362 2, /* size (0 = byte, 1 = short, 2 = long) */
363 16, /* bitsize */
b34976b6 364 FALSE, /* pc_relative */
d75bc93d
TS		 365 0, /* bitpos */
366 complain_overflow_signed, /* complain_on_overflow */
30ac9238 367 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 368 "R_MIPS_GOT_DISP", /* name */
b34976b6 369 TRUE, /* partial_inplace */
d75bc93d
TS		 370 0x0000ffff, /* src_mask */
371 0x0000ffff, /* dst_mask */
b34976b6 372 FALSE), /* pcrel_offset */
d75bc93d
TS		 373
374 /* Displacement to page pointer in the global offset table. */
375 HOWTO (R_MIPS_GOT_PAGE, /* type */
376 0, /* rightshift */
377 2, /* size (0 = byte, 1 = short, 2 = long) */
378 16, /* bitsize */
b34976b6 379 FALSE, /* pc_relative */
d75bc93d
TS		 380 0, /* bitpos */
381 complain_overflow_signed, /* complain_on_overflow */
30ac9238 382 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 383 "R_MIPS_GOT_PAGE", /* name */
b34976b6 384 TRUE, /* partial_inplace */
d75bc93d
TS		 385 0x0000ffff, /* src_mask */
386 0x0000ffff, /* dst_mask */
b34976b6 387 FALSE), /* pcrel_offset */
d75bc93d
TS		 388
389 /* Offset from page pointer in the global offset table. */
390 HOWTO (R_MIPS_GOT_OFST, /* type */
391 0, /* rightshift */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
393 16, /* bitsize */
b34976b6 394 FALSE, /* pc_relative */
d75bc93d
TS		 395 0, /* bitpos */
396 complain_overflow_signed, /* complain_on_overflow */
30ac9238 397 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 398 "R_MIPS_GOT_OFST", /* name */
b34976b6 399 TRUE, /* partial_inplace */
d75bc93d
TS		 400 0x0000ffff, /* src_mask */
401 0x0000ffff, /* dst_mask */
b34976b6 402 FALSE), /* pcrel_offset */
d75bc93d
TS		 403
404 /* High 16 bits of displacement in global offset table. */
405 HOWTO (R_MIPS_GOT_HI16, /* type */
406 0, /* rightshift */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
408 16, /* bitsize */
b34976b6 409 FALSE, /* pc_relative */
d75bc93d
TS		 410 0, /* bitpos */
411 complain_overflow_dont, /* complain_on_overflow */
30ac9238 412 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 413 "R_MIPS_GOT_HI16", /* name */
b34976b6 414 TRUE, /* partial_inplace */
d75bc93d
TS		 415 0x0000ffff, /* src_mask */
416 0x0000ffff, /* dst_mask */
b34976b6 417 FALSE), /* pcrel_offset */
d75bc93d
TS		 418
419 /* Low 16 bits of displacement in global offset table. */
420 HOWTO (R_MIPS_GOT_LO16, /* type */
421 0, /* rightshift */
422 2, /* size (0 = byte, 1 = short, 2 = long) */
423 16, /* bitsize */
b34976b6 424 FALSE, /* pc_relative */
d75bc93d
TS		 425 0, /* bitpos */
426 complain_overflow_dont, /* complain_on_overflow */
30ac9238 427 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 428 "R_MIPS_GOT_LO16", /* name */
b34976b6 429 TRUE, /* partial_inplace */
d75bc93d
TS		 430 0x0000ffff, /* src_mask */
431 0x0000ffff, /* dst_mask */
b34976b6 432 FALSE), /* pcrel_offset */
d75bc93d
TS		 433
434 /* 64 bit subtraction. Used in the N32 ABI. */
435 HOWTO (R_MIPS_SUB, /* type */
436 0, /* rightshift */
437 4, /* size (0 = byte, 1 = short, 2 = long) */
438 64, /* bitsize */
b34976b6 439 FALSE, /* pc_relative */
d75bc93d
TS		 440 0, /* bitpos */
441 complain_overflow_dont, /* complain_on_overflow */
30ac9238 442 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 443 "R_MIPS_SUB", /* name */
b34976b6 444 TRUE, /* partial_inplace */
d75bc93d
TS		 445 MINUS_ONE, /* src_mask */
446 MINUS_ONE, /* dst_mask */
b34976b6 447 FALSE), /* pcrel_offset */
d75bc93d
TS		 448
449 /* Used to cause the linker to insert and delete instructions? */
450 EMPTY_HOWTO (R_MIPS_INSERT_A),
451 EMPTY_HOWTO (R_MIPS_INSERT_B),
452 EMPTY_HOWTO (R_MIPS_DELETE),
453
454 /* Get the higher value of a 64 bit addend. */
455 HOWTO (R_MIPS_HIGHER, /* type */
456 0, /* rightshift */
457 2, /* size (0 = byte, 1 = short, 2 = long) */
458 16, /* bitsize */
b34976b6 459 FALSE, /* pc_relative */
d75bc93d
TS		 460 0, /* bitpos */
461 complain_overflow_dont, /* complain_on_overflow */
30ac9238 462 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 463 "R_MIPS_HIGHER", /* name */
b34976b6 464 TRUE, /* partial_inplace */
d75bc93d
TS		 465 0x0000ffff, /* src_mask */
466 0x0000ffff, /* dst_mask */
b34976b6 467 FALSE), /* pcrel_offset */
d75bc93d
TS		 468
469 /* Get the highest value of a 64 bit addend. */
470 HOWTO (R_MIPS_HIGHEST, /* type */
471 0, /* rightshift */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
473 16, /* bitsize */
b34976b6 474 FALSE, /* pc_relative */
d75bc93d
TS		 475 0, /* bitpos */
476 complain_overflow_dont, /* complain_on_overflow */
30ac9238 477 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 478 "R_MIPS_HIGHEST", /* name */
b34976b6 479 TRUE, /* partial_inplace */
d75bc93d
TS		 480 0x0000ffff, /* src_mask */
481 0x0000ffff, /* dst_mask */
b34976b6 482 FALSE), /* pcrel_offset */
d75bc93d
TS		 483
484 /* High 16 bits of displacement in global offset table. */
485 HOWTO (R_MIPS_CALL_HI16, /* type */
486 0, /* rightshift */
487 2, /* size (0 = byte, 1 = short, 2 = long) */
488 16, /* bitsize */
b34976b6 489 FALSE, /* pc_relative */
d75bc93d
TS		 490 0, /* bitpos */
491 complain_overflow_dont, /* complain_on_overflow */
30ac9238 492 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 493 "R_MIPS_CALL_HI16", /* name */
b34976b6 494 TRUE, /* partial_inplace */
d75bc93d
TS		 495 0x0000ffff, /* src_mask */
496 0x0000ffff, /* dst_mask */
b34976b6 497 FALSE), /* pcrel_offset */
d75bc93d
TS		 498
499 /* Low 16 bits of displacement in global offset table. */
500 HOWTO (R_MIPS_CALL_LO16, /* type */
501 0, /* rightshift */
502 2, /* size (0 = byte, 1 = short, 2 = long) */
503 16, /* bitsize */
b34976b6 504 FALSE, /* pc_relative */
d75bc93d
TS		 505 0, /* bitpos */
506 complain_overflow_dont, /* complain_on_overflow */
30ac9238 507 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 508 "R_MIPS_CALL_LO16", /* name */
b34976b6 509 TRUE, /* partial_inplace */
d75bc93d
TS		 510 0x0000ffff, /* src_mask */
511 0x0000ffff, /* dst_mask */
b34976b6 512 FALSE), /* pcrel_offset */
d75bc93d
TS		 513
514 /* Section displacement. */
515 HOWTO (R_MIPS_SCN_DISP, /* type */
516 0, /* rightshift */
517 2, /* size (0 = byte, 1 = short, 2 = long) */
518 32, /* bitsize */
b34976b6 519 FALSE, /* pc_relative */
d75bc93d
TS		 520 0, /* bitpos */
521 complain_overflow_dont, /* complain_on_overflow */
30ac9238 522 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 523 "R_MIPS_SCN_DISP", /* name */
b34976b6 524 TRUE, /* partial_inplace */
d75bc93d
TS		 525 0xffffffff, /* src_mask */
526 0xffffffff, /* dst_mask */
b34976b6 527 FALSE), /* pcrel_offset */
d75bc93d
TS		 528
529 EMPTY_HOWTO (R_MIPS_REL16),
530 EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE),
531 EMPTY_HOWTO (R_MIPS_PJUMP),
532 EMPTY_HOWTO (R_MIPS_RELGOT),
533
534 /* Protected jump conversion. This is an optimization hint. No
535 relocation is required for correctness. */
536 HOWTO (R_MIPS_JALR, /* type */
537 0, /* rightshift */
538 2, /* size (0 = byte, 1 = short, 2 = long) */
539 32, /* bitsize */
b34976b6 540 FALSE, /* pc_relative */
d75bc93d
TS		 541 0, /* bitpos */
542 complain_overflow_dont, /* complain_on_overflow */
30ac9238 543 _bfd_mips_elf_generic_reloc, /* special_function */
d75bc93d 544 "R_MIPS_JALR", /* name */
b34976b6 545 FALSE, /* partial_inplace */
d75bc93d
TS		 546 0x00000000, /* src_mask */
547 0x00000000, /* dst_mask */
b34976b6 548 FALSE), /* pcrel_offset */
0f20cc35
DJ		 549
550 /* TLS GD/LD dynamic relocations. */
551 HOWTO (R_MIPS_TLS_DTPMOD32, /* type */
552 0, /* rightshift */
553 2, /* size (0 = byte, 1 = short, 2 = long) */
554 32, /* bitsize */
555 FALSE, /* pc_relative */
556 0, /* bitpos */
557 complain_overflow_dont, /* complain_on_overflow */
558 _bfd_mips_elf_generic_reloc, /* special_function */
559 "R_MIPS_TLS_DTPMOD32", /* name */
560 TRUE, /* partial_inplace */
561 0xffffffff, /* src_mask */
562 0xffffffff, /* dst_mask */
563 FALSE), /* pcrel_offset */
564
565 HOWTO (R_MIPS_TLS_DTPREL32, /* type */
566 0, /* rightshift */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
568 32, /* bitsize */
569 FALSE, /* pc_relative */
570 0, /* bitpos */
571 complain_overflow_dont, /* complain_on_overflow */
572 _bfd_mips_elf_generic_reloc, /* special_function */
573 "R_MIPS_TLS_DTPREL32", /* name */
574 TRUE, /* partial_inplace */
575 0xffffffff, /* src_mask */
576 0xffffffff, /* dst_mask */
577 FALSE), /* pcrel_offset */
578
579 EMPTY_HOWTO (R_MIPS_TLS_DTPMOD64),
580 EMPTY_HOWTO (R_MIPS_TLS_DTPREL64),
581
582 /* TLS general dynamic variable reference. */
583 HOWTO (R_MIPS_TLS_GD, /* type */
584 0, /* rightshift */
585 2, /* size (0 = byte, 1 = short, 2 = long) */
586 16, /* bitsize */
587 FALSE, /* pc_relative */
588 0, /* bitpos */
589 complain_overflow_signed, /* complain_on_overflow */
590 _bfd_mips_elf_generic_reloc, /* special_function */
591 "R_MIPS_TLS_GD", /* name */
592 TRUE, /* partial_inplace */
593 0x0000ffff, /* src_mask */
594 0x0000ffff, /* dst_mask */
595 FALSE), /* pcrel_offset */
596
597 /* TLS local dynamic variable reference. */
598 HOWTO (R_MIPS_TLS_LDM, /* type */
599 0, /* rightshift */
600 2, /* size (0 = byte, 1 = short, 2 = long) */
601 16, /* bitsize */
602 FALSE, /* pc_relative */
603 0, /* bitpos */
604 complain_overflow_signed, /* complain_on_overflow */
605 _bfd_mips_elf_generic_reloc, /* special_function */
606 "R_MIPS_TLS_LDM", /* name */
607 TRUE, /* partial_inplace */
608 0x0000ffff, /* src_mask */
609 0x0000ffff, /* dst_mask */
610 FALSE), /* pcrel_offset */
611
612 /* TLS local dynamic offset. */
613 HOWTO (R_MIPS_TLS_DTPREL_HI16, /* type */
614 0, /* rightshift */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
616 16, /* bitsize */
617 FALSE, /* pc_relative */
618 0, /* bitpos */
619 complain_overflow_signed, /* complain_on_overflow */
620 _bfd_mips_elf_generic_reloc, /* special_function */
621 "R_MIPS_TLS_DTPREL_HI16", /* name */
622 TRUE, /* partial_inplace */
623 0x0000ffff, /* src_mask */
624 0x0000ffff, /* dst_mask */
625 FALSE), /* pcrel_offset */
626
627 /* TLS local dynamic offset. */
628 HOWTO (R_MIPS_TLS_DTPREL_LO16, /* type */
629 0, /* rightshift */
630 2, /* size (0 = byte, 1 = short, 2 = long) */
631 16, /* bitsize */
632 FALSE, /* pc_relative */
633 0, /* bitpos */
634 complain_overflow_signed, /* complain_on_overflow */
635 _bfd_mips_elf_generic_reloc, /* special_function */
636 "R_MIPS_TLS_DTPREL_LO16", /* name */
637 TRUE, /* partial_inplace */
638 0x0000ffff, /* src_mask */
639 0x0000ffff, /* dst_mask */
640 FALSE), /* pcrel_offset */
641
642 /* TLS thread pointer offset. */
643 HOWTO (R_MIPS_TLS_GOTTPREL, /* type */
644 0, /* rightshift */
645 2, /* size (0 = byte, 1 = short, 2 = long) */
646 16, /* bitsize */
647 FALSE, /* pc_relative */
648 0, /* bitpos */
649 complain_overflow_signed, /* complain_on_overflow */
650 _bfd_mips_elf_generic_reloc, /* special_function */
651 "R_MIPS_TLS_GOTTPREL", /* name */
652 TRUE, /* partial_inplace */
653 0x0000ffff, /* src_mask */
654 0x0000ffff, /* dst_mask */
655 FALSE), /* pcrel_offset */
656
657 /* TLS IE dynamic relocations. */
658 HOWTO (R_MIPS_TLS_TPREL32, /* type */
659 0, /* rightshift */
660 2, /* size (0 = byte, 1 = short, 2 = long) */
661 32, /* bitsize */
662 FALSE, /* pc_relative */
663 0, /* bitpos */
664 complain_overflow_dont, /* complain_on_overflow */
665 _bfd_mips_elf_generic_reloc, /* special_function */
666 "R_MIPS_TLS_TPREL32", /* name */
667 TRUE, /* partial_inplace */
668 0xffffffff, /* src_mask */
669 0xffffffff, /* dst_mask */
670 FALSE), /* pcrel_offset */
671
672 EMPTY_HOWTO (R_MIPS_TLS_TPREL64),
673
674 /* TLS thread pointer offset. */
675 HOWTO (R_MIPS_TLS_TPREL_HI16, /* type */
676 0, /* rightshift */
677 2, /* size (0 = byte, 1 = short, 2 = long) */
678 16, /* bitsize */
679 FALSE, /* pc_relative */
680 0, /* bitpos */
681 complain_overflow_signed, /* complain_on_overflow */
682 _bfd_mips_elf_generic_reloc, /* special_function */
683 "R_MIPS_TLS_TPREL_HI16", /* name */
684 TRUE, /* partial_inplace */
685 0x0000ffff, /* src_mask */
686 0x0000ffff, /* dst_mask */
687 FALSE), /* pcrel_offset */
688
689 /* TLS thread pointer offset. */
690 HOWTO (R_MIPS_TLS_TPREL_LO16, /* type */
691 0, /* rightshift */
692 2, /* size (0 = byte, 1 = short, 2 = long) */
693 16, /* bitsize */
694 FALSE, /* pc_relative */
695 0, /* bitpos */
696 complain_overflow_signed, /* complain_on_overflow */
697 _bfd_mips_elf_generic_reloc, /* special_function */
698 "R_MIPS_TLS_TPREL_LO16", /* name */
699 TRUE, /* partial_inplace */
700 0x0000ffff, /* src_mask */
701 0x0000ffff, /* dst_mask */
702 FALSE), /* pcrel_offset */
165b93e7
RS		 703
704 /* 32 bit relocation with no addend. */
705 HOWTO (R_MIPS_GLOB_DAT, /* type */
706 0, /* rightshift */
707 2, /* size (0 = byte, 1 = short, 2 = long) */
708 32, /* bitsize */
709 FALSE, /* pc_relative */
710 0, /* bitpos */
711 complain_overflow_dont, /* complain_on_overflow */
712 _bfd_mips_elf_generic_reloc, /* special_function */
713 "R_MIPS_GLOB_DAT", /* name */
714 FALSE, /* partial_inplace */
715 0x0, /* src_mask */
716 0xffffffff, /* dst_mask */
717 FALSE), /* pcrel_offset */
d75bc93d
TS		 718};
719
c6e90b02
TS		 720/* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This
721 is a hack to make the linker think that we need 64 bit values. */
722static reloc_howto_type elf_mips_ctor64_howto =
723 HOWTO (R_MIPS_64, /* type */
252b5132 724 0, /* rightshift */
c6e90b02 725 4, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 726 32, /* bitsize */
b34976b6 727 FALSE, /* pc_relative */
252b5132 728 0, /* bitpos */
c6e90b02
TS		 729 complain_overflow_signed, /* complain_on_overflow */
730 mips32_64bit_reloc, /* special_function */
731 "R_MIPS_64", /* name */
b34976b6 732 TRUE, /* partial_inplace */
c6e90b02 733 0xffffffff, /* src_mask */
252b5132 734 0xffffffff, /* dst_mask */
b34976b6 735 FALSE); /* pcrel_offset */
252b5132 736
d6f16593
MR		 737static reloc_howto_type elf_mips16_howto_table_rel[] =
738{
739 /* The reloc used for the mips16 jump instruction. */
c6e90b02 740 HOWTO (R_MIPS16_26, /* type */
252b5132
RH		 741 2, /* rightshift */
742 2, /* size (0 = byte, 1 = short, 2 = long) */
743 26, /* bitsize */
b34976b6 744 FALSE, /* pc_relative */
252b5132
RH		 745 0, /* bitpos */
746 complain_overflow_dont, /* complain_on_overflow */
c6e90b02
TS		 747 /* This needs complex overflow
748 detection, because the upper four
749 bits must match the PC. */
35d3d567 750 _bfd_mips_elf_generic_reloc, /* special_function */
c6e90b02 751 "R_MIPS16_26", /* name */
b34976b6 752 TRUE, /* partial_inplace */
c6e90b02
TS		 753 0x3ffffff, /* src_mask */
754 0x3ffffff, /* dst_mask */
d6f16593 755 FALSE), /* pcrel_offset */
252b5132 756
d6f16593 757 /* The reloc used for the mips16 gprel instruction. */
c6e90b02 758 HOWTO (R_MIPS16_GPREL, /* type */
252b5132
RH		 759 0, /* rightshift */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
761 16, /* bitsize */
b34976b6 762 FALSE, /* pc_relative */
252b5132 763 0, /* bitpos */
c6e90b02
TS		 764 complain_overflow_signed, /* complain_on_overflow */
765 mips16_gprel_reloc, /* special_function */
766 "R_MIPS16_GPREL", /* name */
b34976b6 767 TRUE, /* partial_inplace */
d6f16593
MR		 768 0x0000ffff, /* src_mask */
769 0x0000ffff, /* dst_mask */
770 FALSE), /* pcrel_offset */
771
772 /* A placeholder for MIPS16 reference to global offset table. */
773 EMPTY_HOWTO (R_MIPS16_GOT16),
774
775 /* A placeholder for MIPS16 16 bit call through global offset table. */
776 EMPTY_HOWTO (R_MIPS16_CALL16),
777
778 /* MIPS16 high 16 bits of symbol value. */
779 HOWTO (R_MIPS16_HI16, /* type */
780 16, /* rightshift */
781 2, /* size (0 = byte, 1 = short, 2 = long) */
782 16, /* bitsize */
783 FALSE, /* pc_relative */
784 0, /* bitpos */
785 complain_overflow_dont, /* complain_on_overflow */
786 _bfd_mips_elf_hi16_reloc, /* special_function */
787 "R_MIPS16_HI16", /* name */
788 TRUE, /* partial_inplace */
789 0x0000ffff, /* src_mask */
790 0x0000ffff, /* dst_mask */
791 FALSE), /* pcrel_offset */
792
793 /* MIPS16 low 16 bits of symbol value. */
794 HOWTO (R_MIPS16_LO16, /* type */
795 0, /* rightshift */
796 2, /* size (0 = byte, 1 = short, 2 = long) */
797 16, /* bitsize */
798 FALSE, /* pc_relative */
799 0, /* bitpos */
800 complain_overflow_dont, /* complain_on_overflow */
801 _bfd_mips_elf_lo16_reloc, /* special_function */
802 "R_MIPS16_LO16", /* name */
803 TRUE, /* partial_inplace */
804 0x0000ffff, /* src_mask */
805 0x0000ffff, /* dst_mask */
806 FALSE), /* pcrel_offset */
807};
252b5132 808
c6e90b02
TS		 809/* 16 bit offset for pc-relative branches. */
810static reloc_howto_type elf_mips_gnu_rel16_s2 =
811 HOWTO (R_MIPS_GNU_REL16_S2, /* type */
812 2, /* rightshift */
252b5132
RH		 813 2, /* size (0 = byte, 1 = short, 2 = long) */
814 16, /* bitsize */
b34976b6 815 TRUE, /* pc_relative */
252b5132
RH		 816 0, /* bitpos */
817 complain_overflow_signed, /* complain_on_overflow */
30ac9238 818 _bfd_mips_elf_generic_reloc, /* special_function */
c6e90b02 819 "R_MIPS_GNU_REL16_S2", /* name */
b34976b6 820 TRUE, /* partial_inplace */
c6e90b02
TS		 821 0xffff, /* src_mask */
822 0xffff, /* dst_mask */
b34976b6 823 TRUE); /* pcrel_offset */
252b5132 824
092dcd75
CD		 825/* 32 bit pc-relative. This was a GNU extension used by embedded-PIC.
826 It was co-opted by mips-linux for exception-handling data. It is no
827 longer used, but should continue to be supported by the linker for
828 backward compatibility. (GCC stopped using it in May, 2004.) */
829static reloc_howto_type elf_mips_gnu_pcrel32 =
830 HOWTO (R_MIPS_PC32, /* type */
831 0, /* rightshift */
832 2, /* size (0 = byte, 1 = short, 2 = long) */
833 32, /* bitsize */
834 TRUE, /* pc_relative */
835 0, /* bitpos */
836 complain_overflow_signed, /* complain_on_overflow */
837 _bfd_mips_elf_generic_reloc, /* special_function */
838 "R_MIPS_PC32", /* name */
839 TRUE, /* partial_inplace */
840 0xffffffff, /* src_mask */
841 0xffffffff, /* dst_mask */
842 TRUE); /* pcrel_offset */
843
c6e90b02
TS		 844/* GNU extension to record C++ vtable hierarchy */
845static reloc_howto_type elf_mips_gnu_vtinherit_howto =
846 HOWTO (R_MIPS_GNU_VTINHERIT, /* type */
252b5132
RH		 847 0, /* rightshift */
848 2, /* size (0 = byte, 1 = short, 2 = long) */
c6e90b02 849 0, /* bitsize */
b34976b6 850 FALSE, /* pc_relative */
252b5132 851 0, /* bitpos */
c6e90b02
TS		 852 complain_overflow_dont, /* complain_on_overflow */
853 NULL, /* special_function */
854 "R_MIPS_GNU_VTINHERIT", /* name */
b34976b6 855 FALSE, /* partial_inplace */
d75bc93d 856 0, /* src_mask */
c6e90b02 857 0, /* dst_mask */
b34976b6 858 FALSE); /* pcrel_offset */
252b5132 859
c6e90b02
TS		 860/* GNU extension to record C++ vtable member usage */
861static reloc_howto_type elf_mips_gnu_vtentry_howto =
862 HOWTO (R_MIPS_GNU_VTENTRY, /* type */
252b5132
RH		 863 0, /* rightshift */
864 2, /* size (0 = byte, 1 = short, 2 = long) */
c6e90b02 865 0, /* bitsize */
b34976b6 866 FALSE, /* pc_relative */
252b5132
RH		 867 0, /* bitpos */
868 complain_overflow_dont, /* complain_on_overflow */
c6e90b02
TS		 869 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
870 "R_MIPS_GNU_VTENTRY", /* name */
b34976b6 871 FALSE, /* partial_inplace */
d75bc93d 872 0, /* src_mask */
c6e90b02 873 0, /* dst_mask */
b34976b6 874 FALSE); /* pcrel_offset */
252b5132 875
b34976b6 876/* Set the GP value for OUTPUT_BFD. Returns FALSE if this is a
c6e90b02 877 dangerous relocation. */
252b5132 878
b34976b6 879static bfd_boolean
11a2be4d 880mips_elf_assign_gp (bfd *output_bfd, bfd_vma *pgp)
252b5132 881{
c6e90b02
TS		 882 unsigned int count;
883 asymbol **sym;
884 unsigned int i;
e92d460e 885
c6e90b02
TS		 886 /* If we've already figured out what GP will be, just return it. */
887 *pgp = _bfd_get_gp_value (output_bfd);
888 if (*pgp)
b34976b6 889 return TRUE;
c6e90b02
TS		 890
891 count = bfd_get_symcount (output_bfd);
892 sym = bfd_get_outsymbols (output_bfd);
252b5132 893
c6e90b02
TS		 894 /* The linker script will have created a symbol named `_gp' with the
895 appropriate value. */
11a2be4d 896 if (sym == NULL)
c6e90b02
TS		 897 i = count;
898 else
252b5132 899 {
c6e90b02
TS		 900 for (i = 0; i < count; i++, sym++)
901 {
902 register const char *name;
903
904 name = bfd_asymbol_name (*sym);
905 if (*name == '_' && strcmp (name, "_gp") == 0)
906 {
907 *pgp = bfd_asymbol_value (*sym);
908 _bfd_set_gp_value (output_bfd, *pgp);
909 break;
910 }
911 }
252b5132
RH		 912 }
913
c6e90b02 914 if (i >= count)
252b5132 915 {
c6e90b02
TS		 916 /* Only get the error once. */
917 *pgp = 4;
918 _bfd_set_gp_value (output_bfd, *pgp);
b34976b6 919 return FALSE;
252b5132
RH		 920 }
921
b34976b6 922 return TRUE;
252b5132
RH		 923}
924
c6e90b02
TS		 925/* We have to figure out the gp value, so that we can adjust the
926 symbol value correctly. We look up the symbol _gp in the output
927 BFD. If we can't find it, we're stuck. We cache it in the ELF
928 target data. We don't need to adjust the symbol value for an
1049f94e 929 external symbol if we are producing relocatable output. */
252b5132 930
c6e90b02 931static bfd_reloc_status_type
11a2be4d
RS		 932mips_elf_final_gp (bfd *output_bfd, asymbol *symbol, bfd_boolean relocatable,
933 char **error_message, bfd_vma *pgp)
252b5132 934{
c6e90b02 935 if (bfd_is_und_section (symbol->section)
1049f94e 936 && ! relocatable)
252b5132 937 {
c6e90b02
TS		 938 *pgp = 0;
939 return bfd_reloc_undefined;
252b5132
RH		 940 }
941
c6e90b02
TS		 942 *pgp = _bfd_get_gp_value (output_bfd);
943 if (*pgp == 0
1049f94e 944 && (! relocatable
c6e90b02 945 || (symbol->flags & BSF_SECTION_SYM) != 0))
252b5132 946 {
1049f94e 947 if (relocatable)
252b5132 948 {
c6e90b02
TS		 949 /* Make up a value. */
950 *pgp = symbol->section->output_section->vma + 0x4000;
951 _bfd_set_gp_value (output_bfd, *pgp);
252b5132 952 }
c6e90b02 953 else if (!mips_elf_assign_gp (output_bfd, pgp))
252b5132 954 {
c6e90b02
TS		 955 *error_message =
956 (char *) _("GP relative relocation when _gp not defined");
957 return bfd_reloc_dangerous;
252b5132 958 }
252b5132
RH		 959 }
960
c6e90b02
TS		 961 return bfd_reloc_ok;
962}
252b5132 963
c6e90b02
TS		 964/* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must
965 become the offset from the gp register. This function also handles
966 R_MIPS_LITERAL relocations, although those can be handled more
967 cleverly because the entries in the .lit8 and .lit4 sections can be
968 merged. */
252b5132 969
c6e90b02 970bfd_reloc_status_type
11a2be4d
RS		 971_bfd_mips_elf32_gprel16_reloc (bfd *abfd, arelent *reloc_entry,
972 asymbol *symbol, void *data,
973 asection *input_section, bfd *output_bfd,
974 char **error_message)
c6e90b02 975{
1049f94e 976 bfd_boolean relocatable;
c6e90b02
TS		 977 bfd_reloc_status_type ret;
978 bfd_vma gp;
252b5132 979
254f0426
MR		 980 /* R_MIPS_LITERAL relocations are defined for local symbols only. */
981 if (reloc_entry->howto->type == R_MIPS_LITERAL
982 && output_bfd != NULL
983 && (symbol->flags & BSF_SECTION_SYM) == 0
984 && (symbol->flags & BSF_LOCAL) != 0)
985 {
986 *error_message = (char *)
987 _("literal relocation occurs for an external symbol");
988 return bfd_reloc_outofrange;
989 }
990
11a2be4d 991 if (output_bfd != NULL)
1049f94e 992 relocatable = TRUE;
c6e90b02
TS		 993 else
994 {
1049f94e 995 relocatable = FALSE;
c6e90b02
TS		 996 output_bfd = symbol->section->output_section->owner;
997 }
252b5132 998
1049f94e 999 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
c6e90b02
TS		 1000 &gp);
1001 if (ret != bfd_reloc_ok)
1002 return ret;
252b5132 1003
c6e90b02 1004 return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1049f94e 1005 input_section, relocatable,
c6e90b02
TS		 1006 data, gp);
1007}
252b5132 1008
cb7394f2
TS		 1009/* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must
1010 become the offset from the gp register. */
252b5132 1011
c6e90b02 1012static bfd_reloc_status_type
11a2be4d
RS		 1013mips_elf_gprel32_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1014 void *data, asection *input_section, bfd *output_bfd,
1015 char **error_message)
c6e90b02 1016{
1049f94e 1017 bfd_boolean relocatable;
c6e90b02
TS		 1018 bfd_reloc_status_type ret;
1019 bfd_vma gp;
252b5132 1020
765f2ef6
MR		 1021 /* R_MIPS_GPREL32 relocations are defined for local symbols only. */
1022 if (output_bfd != NULL
1023 && (symbol->flags & BSF_SECTION_SYM) == 0
1024 && (symbol->flags & BSF_LOCAL) != 0)
1025 {
1026 *error_message = (char *)
1027 _("32bits gp relative relocation occurs for an external symbol");
1028 return bfd_reloc_outofrange;
1029 }
1030
11a2be4d 1031 if (output_bfd != NULL)
1049f94e 1032 relocatable = TRUE;
c6e90b02
TS		 1033 else
1034 {
1049f94e 1035 relocatable = FALSE;
c6e90b02 1036 output_bfd = symbol->section->output_section->owner;
c6e90b02 1037 }
252b5132 1038
1049f94e 1039 ret = mips_elf_final_gp (output_bfd, symbol, relocatable,
a7ebbfdf
TS		 1040 error_message, &gp);
1041 if (ret != bfd_reloc_ok)
1042 return ret;
1043
c6e90b02 1044 return gprel32_with_gp (abfd, symbol, reloc_entry, input_section,
1049f94e 1045 relocatable, data, gp);
c6e90b02 1046}
252b5132 1047
c6e90b02 1048static bfd_reloc_status_type
11a2be4d
RS		 1049gprel32_with_gp (bfd *abfd, asymbol *symbol, arelent *reloc_entry,
1050 asection *input_section, bfd_boolean relocatable,
1051 void *data, bfd_vma gp)
c6e90b02
TS		 1052{
1053 bfd_vma relocation;
a7ebbfdf 1054 bfd_vma val;
252b5132 1055
c6e90b02
TS		 1056 if (bfd_is_com_section (symbol->section))
1057 relocation = 0;
1058 else
1059 relocation = symbol->value;
252b5132 1060
c6e90b02
TS		 1061 relocation += symbol->section->output_section->vma;
1062 relocation += symbol->section->output_offset;
252b5132 1063
07515404 1064 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
c6e90b02 1065 return bfd_reloc_outofrange;
252b5132 1066
c6e90b02 1067 /* Set val to the offset into the section or symbol. */
a7ebbfdf
TS		 1068 val = reloc_entry->addend;
1069
1070 if (reloc_entry->howto->partial_inplace)
1071 val += bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
252b5132 1072
c6e90b02 1073 /* Adjust val for the final section location and GP value. If we
1049f94e 1074 are producing relocatable output, we don't want to do this for
c6e90b02 1075 an external symbol. */
1049f94e 1076 if (! relocatable
c6e90b02
TS		 1077 || (symbol->flags & BSF_SECTION_SYM) != 0)
1078 val += relocation - gp;
252b5132 1079
a7ebbfdf
TS		 1080 if (reloc_entry->howto->partial_inplace)
1081 bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address);
1082 else
1083 reloc_entry->addend = val;
c6142e5d 1084
1049f94e 1085 if (relocatable)
c6e90b02 1086 reloc_entry->address += input_section->output_offset;
252b5132 1087
c6e90b02 1088 return bfd_reloc_ok;
252b5132
RH		 1089}
1090
c6e90b02
TS		 1091/* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are
1092 generated when addresses are 64 bits. The upper 32 bits are a simple
1093 sign extension. */
7403cb63 1094
c6e90b02 1095static bfd_reloc_status_type
30ac9238
RS		 1096mips32_64bit_reloc (bfd *abfd, arelent *reloc_entry,
1097 asymbol *symbol ATTRIBUTE_UNUSED,
1098 void *data, asection *input_section,
1099 bfd *output_bfd, char **error_message)
7403cb63 1100{
c6e90b02
TS		 1101 bfd_reloc_status_type r;
1102 arelent reloc32;
1103 unsigned long val;
1104 bfd_size_type addr;
7403cb63 1105
c6e90b02
TS		 1106 /* Do a normal 32 bit relocation on the lower 32 bits. */
1107 reloc32 = *reloc_entry;
1108 if (bfd_big_endian (abfd))
1109 reloc32.address += 4;
1110 reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32];
1111 r = bfd_perform_relocation (abfd, &reloc32, data, input_section,
1112 output_bfd, error_message);
be3ccd9c 1113
c6e90b02
TS		 1114 /* Sign extend into the upper 32 bits. */
1115 val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address);
1116 if ((val & 0x80000000) != 0)
1117 val = 0xffffffff;
1118 else
1119 val = 0;
1120 addr = reloc_entry->address;
1121 if (bfd_little_endian (abfd))
1122 addr += 4;
11a2be4d 1123 bfd_put_32 (abfd, val, (bfd_byte *) data + addr);
c6e90b02
TS		 1124
1125 return r;
7403cb63
MM		 1126}
1127
c6e90b02 1128/* Handle a mips16 GP relative reloc. */
252b5132 1129
c6e90b02 1130static bfd_reloc_status_type
11a2be4d
RS		 1131mips16_gprel_reloc (bfd *abfd, arelent *reloc_entry, asymbol *symbol,
1132 void *data, asection *input_section, bfd *output_bfd,
1133 char **error_message)
c6e90b02 1134{
1049f94e 1135 bfd_boolean relocatable;
c6e90b02 1136 bfd_reloc_status_type ret;
d6f16593 1137 bfd_byte *location;
c6e90b02 1138 bfd_vma gp;
252b5132 1139
a7ebbfdf
TS		 1140 /* If we're relocating, and this is an external symbol, we don't want
1141 to change anything. */
c6e90b02
TS		 1142 if (output_bfd != NULL
1143 && (symbol->flags & BSF_SECTION_SYM) == 0
a7ebbfdf 1144 && (symbol->flags & BSF_LOCAL) != 0)
c6e90b02
TS		 1145 {
1146 reloc_entry->address += input_section->output_offset;
1147 return bfd_reloc_ok;
1148 }
252b5132 1149
c6e90b02 1150 if (output_bfd != NULL)
1049f94e 1151 relocatable = TRUE;
c6e90b02
TS		 1152 else
1153 {
1049f94e 1154 relocatable = FALSE;
c6e90b02 1155 output_bfd = symbol->section->output_section->owner;
252b5132
RH		 1156 }
1157
1049f94e 1158 ret = mips_elf_final_gp (output_bfd, symbol, relocatable, error_message,
c6e90b02
TS		 1159 &gp);
1160 if (ret != bfd_reloc_ok)
1161 return ret;
252b5132 1162
d6f16593
MR		 1163 location = (bfd_byte *) data + reloc_entry->address;
1164 _bfd_mips16_elf_reloc_unshuffle (abfd, reloc_entry->howto->type, FALSE,
1165 location);
1166 ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry,
1167 input_section, relocatable,
1168 data, gp);
1169 _bfd_mips16_elf_reloc_shuffle (abfd, reloc_entry->howto->type, !relocatable,
1170 location);
a7ebbfdf 1171
d6f16593 1172 return ret;
c6e90b02 1173}
7403cb63 1174
c6e90b02 1175/* A mapping from BFD reloc types to MIPS ELF reloc types. */
252b5132 1176
c6e90b02 1177struct elf_reloc_map {
cb7394f2
TS		 1178 bfd_reloc_code_real_type bfd_val;
1179 enum elf_mips_reloc_type elf_val;
c6e90b02 1180};
252b5132 1181
c6e90b02
TS		 1182static const struct elf_reloc_map mips_reloc_map[] =
1183{
28458e7e 1184 { BFD_RELOC_NONE, R_MIPS_NONE },
c6e90b02
TS		 1185 { BFD_RELOC_16, R_MIPS_16 },
1186 { BFD_RELOC_32, R_MIPS_32 },
cb7394f2 1187 /* There is no BFD reloc for R_MIPS_REL32. */
c6e90b02
TS		 1188 { BFD_RELOC_64, R_MIPS_64 },
1189 { BFD_RELOC_MIPS_JMP, R_MIPS_26 },
1190 { BFD_RELOC_HI16_S, R_MIPS_HI16 },
1191 { BFD_RELOC_LO16, R_MIPS_LO16 },
1192 { BFD_RELOC_GPREL16, R_MIPS_GPREL16 },
1193 { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL },
1194 { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 },
bad36eac 1195 { BFD_RELOC_16_PCREL_S2, R_MIPS_PC16 },
c6e90b02
TS		 1196 { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 },
1197 { BFD_RELOC_GPREL32, R_MIPS_GPREL32 },
1198 { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 },
1199 { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 },
1200 { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 },
1201 { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 },
1202 { BFD_RELOC_MIPS_SUB, R_MIPS_SUB },
1203 { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE },
1204 { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST },
0f20cc35
DJ		 1205 { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP },
1206 { BFD_RELOC_MIPS_TLS_DTPMOD32, R_MIPS_TLS_DTPMOD32 },
1207 { BFD_RELOC_MIPS_TLS_DTPREL32, R_MIPS_TLS_DTPREL32 },
1208 { BFD_RELOC_MIPS_TLS_DTPMOD64, R_MIPS_TLS_DTPMOD64 },
1209 { BFD_RELOC_MIPS_TLS_DTPREL64, R_MIPS_TLS_DTPREL64 },
1210 { BFD_RELOC_MIPS_TLS_GD, R_MIPS_TLS_GD },
1211 { BFD_RELOC_MIPS_TLS_LDM, R_MIPS_TLS_LDM },
1212 { BFD_RELOC_MIPS_TLS_DTPREL_HI16, R_MIPS_TLS_DTPREL_HI16 },
1213 { BFD_RELOC_MIPS_TLS_DTPREL_LO16, R_MIPS_TLS_DTPREL_LO16 },
1214 { BFD_RELOC_MIPS_TLS_GOTTPREL, R_MIPS_TLS_GOTTPREL },
1215 { BFD_RELOC_MIPS_TLS_TPREL32, R_MIPS_TLS_TPREL32 },
1216 { BFD_RELOC_MIPS_TLS_TPREL64, R_MIPS_TLS_TPREL64 },
1217 { BFD_RELOC_MIPS_TLS_TPREL_HI16, R_MIPS_TLS_TPREL_HI16 },
1218 { BFD_RELOC_MIPS_TLS_TPREL_LO16, R_MIPS_TLS_TPREL_LO16 }
c6e90b02 1219};
252b5132 1220
d6f16593
MR		 1221static const struct elf_reloc_map mips16_reloc_map[] =
1222{
1223 { BFD_RELOC_MIPS16_JMP, R_MIPS16_26 - R_MIPS16_min },
1224 { BFD_RELOC_MIPS16_GPREL, R_MIPS16_GPREL - R_MIPS16_min },
1225 { BFD_RELOC_MIPS16_HI16_S, R_MIPS16_HI16 - R_MIPS16_min },
1226 { BFD_RELOC_MIPS16_LO16, R_MIPS16_LO16 - R_MIPS16_min },
1227};
1228
c6e90b02 1229/* Given a BFD reloc type, return a howto structure. */
252b5132 1230
c6e90b02 1231static reloc_howto_type *
11a2be4d 1232bfd_elf32_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
252b5132 1233{
c6e90b02 1234 unsigned int i;
cb7394f2 1235 reloc_howto_type *howto_table = elf_mips_howto_table_rel;
d6f16593 1236 reloc_howto_type *howto16_table = elf_mips16_howto_table_rel;
252b5132 1237
cb7394f2
TS		 1238 for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map);
1239 i++)
252b5132 1240 {
cb7394f2
TS		 1241 if (mips_reloc_map[i].bfd_val == code)
1242 return &howto_table[(int) mips_reloc_map[i].elf_val];
252b5132
RH		 1243 }
1244
d6f16593
MR		 1245 for (i = 0; i < sizeof (mips16_reloc_map) / sizeof (struct elf_reloc_map);
1246 i++)
1247 {
1248 if (mips16_reloc_map[i].bfd_val == code)
1249 return &howto16_table[(int) mips16_reloc_map[i].elf_val];
1250 }
1251
c6e90b02 1252 switch (code)
252b5132 1253 {
c6e90b02
TS		 1254 default:
1255 bfd_set_error (bfd_error_bad_value);
1256 return NULL;
252b5132 1257
c6e90b02
TS		 1258 case BFD_RELOC_CTOR:
1259 /* We need to handle BFD_RELOC_CTOR specially.
1260 Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the
69931e60
AO		 1261 size of addresses of the ABI. */
1262 if ((elf_elfheader (abfd)->e_flags & (E_MIPS_ABI_O64
1263 | E_MIPS_ABI_EABI64)) != 0)
c6e90b02 1264 return &elf_mips_ctor64_howto;
69931e60
AO		 1265 else
1266 return &howto_table[(int) R_MIPS_32];
252b5132 1267
c6e90b02
TS		 1268 case BFD_RELOC_VTABLE_INHERIT:
1269 return &elf_mips_gnu_vtinherit_howto;
1270 case BFD_RELOC_VTABLE_ENTRY:
1271 return &elf_mips_gnu_vtentry_howto;
092dcd75
CD		 1272 case BFD_RELOC_32_PCREL:
1273 return &elf_mips_gnu_pcrel32;
c6e90b02
TS		 1274 }
1275}
252b5132 1276
947216bf 1277/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
252b5132 1278
c6e90b02 1279static reloc_howto_type *
11a2be4d
RS		 1280mips_elf32_rtype_to_howto (unsigned int r_type,
1281 bfd_boolean rela_p ATTRIBUTE_UNUSED)
c6e90b02
TS		 1282{
1283 switch (r_type)
1284 {
c6e90b02
TS		 1285 case R_MIPS_GNU_VTINHERIT:
1286 return &elf_mips_gnu_vtinherit_howto;
c6e90b02
TS		 1287 case R_MIPS_GNU_VTENTRY:
1288 return &elf_mips_gnu_vtentry_howto;
c6e90b02
TS		 1289 case R_MIPS_GNU_REL16_S2:
1290 return &elf_mips_gnu_rel16_s2;
092dcd75
CD		 1291 case R_MIPS_PC32:
1292 return &elf_mips_gnu_pcrel32;
c6e90b02 1293 default:
d6f16593
MR		 1294 if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
1295 return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
c6e90b02
TS		 1296 BFD_ASSERT (r_type < (unsigned int) R_MIPS_max);
1297 return &elf_mips_howto_table_rel[r_type];
1298 }
1299}
252b5132 1300
947216bf 1301/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
252b5132 1302
c6e90b02 1303static void
11a2be4d 1304mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
c6e90b02 1305{
0a44bf69 1306 const struct elf_backend_data *bed;
c6e90b02 1307 unsigned int r_type;
252b5132 1308
c6e90b02 1309 r_type = ELF32_R_TYPE (dst->r_info);
0a44bf69
RS		 1310 bed = get_elf_backend_data (abfd);
1311 cache_ptr->howto = bed->elf_backend_mips_rtype_to_howto (r_type, FALSE);
252b5132 1312
c6e90b02
TS		 1313 /* The addend for a GPREL16 or LITERAL relocation comes from the GP
1314 value for the object file. We get the addend now, rather than
1315 when we do the relocation, because the symbol manipulations done
1316 by the linker may cause us to lose track of the input BFD. */
1317 if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
1318 && (r_type == (unsigned int) R_MIPS_GPREL16
1319 || r_type == (unsigned int) R_MIPS_LITERAL))
1320 cache_ptr->addend = elf_gp (abfd);
1321}
5499724a 1322
947216bf 1323/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
252b5132 1324
c6e90b02 1325static void
11a2be4d 1326mips_info_to_howto_rela (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
c6e90b02 1327{
947216bf 1328 mips_info_to_howto_rel (abfd, cache_ptr, dst);
252b5132 1329
c6e90b02 1330 /* If we ever need to do any extra processing with dst->r_addend
947216bf 1331 (the field omitted in an Elf_Internal_Rel) we can do it here. */
c6e90b02
TS		 1332}
1333\f
1334/* Determine whether a symbol is global for the purposes of splitting
1335 the symbol table into global symbols and local symbols. At least
1336 on Irix 5, this split must be between section symbols and all other
1337 symbols. On most ELF targets the split is between static symbols
1338 and externally visible symbols. */
252b5132 1339
b34976b6 1340static bfd_boolean
11a2be4d 1341mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
c6e90b02
TS		 1342{
1343 if (SGI_COMPAT (abfd))
1344 return (sym->flags & BSF_SECTION_SYM) == 0;
1345 else
1346 return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0
1347 || bfd_is_und_section (bfd_get_section (sym))
1348 || bfd_is_com_section (bfd_get_section (sym)));
1349}
1350\f
1351/* Set the right machine number for a MIPS ELF file. */
7403cb63 1352
b34976b6 1353static bfd_boolean
11a2be4d 1354mips_elf32_object_p (bfd *abfd)
c6e90b02
TS		 1355{
1356 unsigned long mach;
103186c6 1357
c6e90b02
TS		 1358 /* Irix 5 and 6 are broken. Object file symbol tables are not always
1359 sorted correctly such that local symbols precede global symbols,
1360 and the sh_info field in the symbol table is not always right. */
1361 if (SGI_COMPAT (abfd))
b34976b6 1362 elf_bad_symtab (abfd) = TRUE;
103186c6 1363
8a397dad 1364 if (ABI_N32_P (abfd))
b34976b6 1365 return FALSE;
8a397dad 1366
c6e90b02
TS		 1367 mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags);
1368 bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach);
252b5132 1369
b34976b6 1370 return TRUE;
c6e90b02
TS		 1371}
1372\f
1373/* MIPS ELF local labels start with '$', not 'L'. */
252b5132 1374
b34976b6 1375static bfd_boolean
11a2be4d 1376mips_elf_is_local_label_name (bfd *abfd, const char *name)
c6e90b02
TS		 1377{
1378 if (name[0] == '$')
b34976b6 1379 return TRUE;
252b5132 1380
c6e90b02
TS		 1381 /* On Irix 6, the labels go back to starting with '.', so we accept
1382 the generic ELF local label syntax as well. */
1383 return _bfd_elf_is_local_label_name (abfd, name);
252b5132
RH		 1384}
1385\f
c6e90b02 1386/* Support for core dump NOTE sections. */
b34976b6 1387static bfd_boolean
11a2be4d 1388elf32_mips_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
bb0082d6
AM		 1389{
1390 int offset;
eea6121a 1391 unsigned int size;
bb0082d6
AM		 1392
1393 switch (note->descsz)
1394 {
1395 default:
b34976b6 1396 return FALSE;
bb0082d6
AM		 1397
1398 case 256: /* Linux/MIPS */
1399 /* pr_cursig */
1400 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1401
1402 /* pr_pid */
1403 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1404
1405 /* pr_reg */
1406 offset = 72;
eea6121a 1407 size = 180;
bb0082d6
AM		 1408
1409 break;
1410 }
1411
1412 /* Make a ".reg/999" section. */
936e320b 1413 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
eea6121a 1414 size, note->descpos + offset);
bb0082d6
AM		 1415}
1416
b34976b6 1417static bfd_boolean
11a2be4d 1418elf32_mips_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
bb0082d6
AM		 1419{
1420 switch (note->descsz)
1421 {
1422 default:
b34976b6 1423 return FALSE;
bb0082d6
AM		 1424
1425 case 128: /* Linux/MIPS elf_prpsinfo */
1426 elf_tdata (abfd)->core_program
1427 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1428 elf_tdata (abfd)->core_command
1429 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1430 }
1431
1432 /* Note that for some reason, a spurious space is tacked
1433 onto the end of the args in some (at least one anyway)
1434 implementations, so strip it off if it exists. */
1435
1436 {
1437 char *command = elf_tdata (abfd)->core_command;
1438 int n = strlen (command);
1439
1440 if (0 < n && command[n - 1] == ' ')
1441 command[n - 1] = '\0';
1442 }
1443
b34976b6 1444 return TRUE;
bb0082d6
AM		 1445}
1446\f
c6e90b02
TS		 1447/* Depending on the target vector we generate some version of Irix
1448 executables or "normal" MIPS ELF ABI executables. */
1449static irix_compat_t
11a2be4d 1450elf32_mips_irix_compat (bfd *abfd)
c6e90b02 1451{
cb7394f2
TS		 1452 if ((abfd->xvec == &bfd_elf32_bigmips_vec)
1453 || (abfd->xvec == &bfd_elf32_littlemips_vec))
c6e90b02 1454 return ict_irix5;
cb7394f2
TS		 1455 else
1456 return ict_none;
c6e90b02 1457}
73d074b4 1458\f
252b5132
RH		 1459/* ECOFF swapping routines. These are used when dealing with the
1460 .mdebug section, which is in the ECOFF debugging format. */
be3ccd9c 1461static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
252b5132
RH		 1462 /* Symbol table magic number. */
1463 magicSym,
1464 /* Alignment of debugging information. E.g., 4. */
1465 4,
1466 /* Sizes of external symbolic information. */
1467 sizeof (struct hdr_ext),
1468 sizeof (struct dnr_ext),
1469 sizeof (struct pdr_ext),
1470 sizeof (struct sym_ext),
1471 sizeof (struct opt_ext),
1472 sizeof (struct fdr_ext),
1473 sizeof (struct rfd_ext),
1474 sizeof (struct ext_ext),
1475 /* Functions to swap in external symbolic data. */
1476 ecoff_swap_hdr_in,
1477 ecoff_swap_dnr_in,
1478 ecoff_swap_pdr_in,
1479 ecoff_swap_sym_in,
1480 ecoff_swap_opt_in,
1481 ecoff_swap_fdr_in,
1482 ecoff_swap_rfd_in,
1483 ecoff_swap_ext_in,
1484 _bfd_ecoff_swap_tir_in,
1485 _bfd_ecoff_swap_rndx_in,
1486 /* Functions to swap out external symbolic data. */
1487 ecoff_swap_hdr_out,
1488 ecoff_swap_dnr_out,
1489 ecoff_swap_pdr_out,
1490 ecoff_swap_sym_out,
1491 ecoff_swap_opt_out,
1492 ecoff_swap_fdr_out,
1493 ecoff_swap_rfd_out,
1494 ecoff_swap_ext_out,
1495 _bfd_ecoff_swap_tir_out,
1496 _bfd_ecoff_swap_rndx_out,
1497 /* Function to read in symbolic data. */
1498 _bfd_mips_elf_read_ecoff_info
1499};
1500\f
252b5132
RH		 1501#define ELF_ARCH bfd_arch_mips
1502#define ELF_MACHINE_CODE EM_MIPS
1503
b34976b6
AM		 1504#define elf_backend_collect TRUE
1505#define elf_backend_type_change_ok TRUE
1506#define elf_backend_can_gc_sections TRUE
3f830999 1507#define elf_info_to_howto mips_info_to_howto_rela
252b5132
RH		 1508#define elf_info_to_howto_rel mips_info_to_howto_rel
1509#define elf_backend_sym_is_global mips_elf_sym_is_global
c6e90b02 1510#define elf_backend_object_p mips_elf32_object_p
d75bc93d
TS		 1511#define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing
1512#define elf_backend_section_processing _bfd_mips_elf_section_processing
103186c6 1513#define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr
252b5132
RH		 1514#define elf_backend_fake_sections _bfd_mips_elf_fake_sections
1515#define elf_backend_section_from_bfd_section \
1516 _bfd_mips_elf_section_from_bfd_section
103186c6 1517#define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook
d75bc93d
TS		 1518#define elf_backend_link_output_symbol_hook \
1519 _bfd_mips_elf_link_output_symbol_hook
103186c6
MM		 1520#define elf_backend_create_dynamic_sections \
1521 _bfd_mips_elf_create_dynamic_sections
1522#define elf_backend_check_relocs _bfd_mips_elf_check_relocs
8992f0d7
TS		 1523#define elf_backend_merge_symbol_attribute \
1524 _bfd_mips_elf_merge_symbol_attribute
103186c6
MM		 1525#define elf_backend_adjust_dynamic_symbol \
1526 _bfd_mips_elf_adjust_dynamic_symbol
1527#define elf_backend_always_size_sections \
1528 _bfd_mips_elf_always_size_sections
1529#define elf_backend_size_dynamic_sections \
1530 _bfd_mips_elf_size_dynamic_sections
74541ad4 1531#define elf_backend_init_index_section _bfd_elf_init_1_index_section
103186c6 1532#define elf_backend_relocate_section _bfd_mips_elf_relocate_section
103186c6
MM		 1533#define elf_backend_finish_dynamic_symbol \
1534 _bfd_mips_elf_finish_dynamic_symbol
1535#define elf_backend_finish_dynamic_sections \
1536 _bfd_mips_elf_finish_dynamic_sections
d75bc93d
TS		 1537#define elf_backend_final_write_processing \
1538 _bfd_mips_elf_final_write_processing
1539#define elf_backend_additional_program_headers \
1540 _bfd_mips_elf_additional_program_headers
1541#define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map
103186c6
MM		 1542#define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook
1543#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
8a20f077
UC		 1544#define elf_backend_copy_indirect_symbol \
1545 _bfd_mips_elf_copy_indirect_symbol
b305ef96 1546#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
c6e90b02
TS		 1547#define elf_backend_grok_prstatus elf32_mips_grok_prstatus
1548#define elf_backend_grok_psinfo elf32_mips_grok_psinfo
d75bc93d
TS		 1549#define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap
1550
1551#define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO)
d75bc93d
TS		 1552#define elf_backend_may_use_rel_p 1
1553#define elf_backend_may_use_rela_p 0
1554#define elf_backend_default_use_rela_p 0
b34976b6 1555#define elf_backend_sign_extend_vma TRUE
b305ef96 1556
d01414a5 1557#define elf_backend_discard_info _bfd_mips_elf_discard_info
73d074b4 1558#define elf_backend_ignore_discarded_relocs \
53bfd6b4 1559 _bfd_mips_elf_ignore_discarded_relocs
c6e90b02
TS		 1560#define elf_backend_mips_irix_compat elf32_mips_irix_compat
1561#define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto
252b5132
RH		 1562#define bfd_elf32_bfd_is_local_label_name \
1563 mips_elf_is_local_label_name
1564#define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line
4ab527b0 1565#define bfd_elf32_find_inliner_info _bfd_mips_elf_find_inliner_info
f0abc2a1 1566#define bfd_elf32_new_section_hook _bfd_mips_elf_new_section_hook
252b5132 1567#define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents
c6e90b02
TS		 1568#define bfd_elf32_bfd_get_relocated_section_contents \
1569 _bfd_elf_mips_get_relocated_section_contents
252b5132 1570#define bfd_elf32_bfd_link_hash_table_create \
103186c6
MM		 1571 _bfd_mips_elf_link_hash_table_create
1572#define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link
252b5132
RH		 1573#define bfd_elf32_bfd_merge_private_bfd_data \
1574 _bfd_mips_elf_merge_private_bfd_data
1575#define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags
1576#define bfd_elf32_bfd_print_private_bfd_data \
1577 _bfd_mips_elf_print_private_bfd_data
e364195d 1578
d75bc93d
TS		 1579/* Support for SGI-ish mips targets. */
1580#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec
1581#define TARGET_LITTLE_NAME "elf32-littlemips"
1582#define TARGET_BIG_SYM bfd_elf32_bigmips_vec
1583#define TARGET_BIG_NAME "elf32-bigmips"
1584
4301eeb1
MR		 1585/* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses
1586 a value of 0x1000, and we are compatible. */
1587#define ELF_MAXPAGESIZE 0x1000
24718e3b 1588#define ELF_COMMONPAGESIZE 0x1000
4301eeb1 1589
d75bc93d 1590#include "elf32-target.h"
e364195d 1591
d75bc93d 1592/* Support for traditional mips targets. */
e364195d
UC		 1593#undef TARGET_LITTLE_SYM
1594#undef TARGET_LITTLE_NAME
1595#undef TARGET_BIG_SYM
1596#undef TARGET_BIG_NAME
1597
4301eeb1 1598#undef ELF_MAXPAGESIZE
7fd91fe0 1599#undef ELF_COMMONPAGESIZE
4301eeb1 1600
e364195d
UC		 1601#define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec
1602#define TARGET_LITTLE_NAME "elf32-tradlittlemips"
1603#define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec
1604#define TARGET_BIG_NAME "elf32-tradbigmips"
1605
7fd91fe0
TS		 1606/* The MIPS ABI says at Page 5-1:
1607 Virtual addresses and file offsets for MIPS segments are congruent
1608 modulo 64 KByte (0x10000) or larger powers of 2. Because 64 KBytes
1609 is the maximum page size, the files are suitable for paging
1610 regardless of physical page size. */
4301eeb1 1611#define ELF_MAXPAGESIZE 0x10000
7fd91fe0 1612#define ELF_COMMONPAGESIZE 0x1000
4301eeb1
MR		 1613#define elf32_bed elf32_tradbed
1614
c6e90b02 1615/* Include the target file again for this target. */
e364195d 1616#include "elf32-target.h"
0a44bf69
RS		 1617
1618
1619/* Specific to VxWorks. */
1620static reloc_howto_type mips_vxworks_copy_howto_rela =
1621 HOWTO (R_MIPS_COPY, /* type */
1622 0, /* rightshift */
1623 2, /* size (0 = byte, 1 = short, 2 = long) */
1624 32, /* bitsize */
1625 FALSE, /* pc_relative */
1626 0, /* bitpos */
1627 complain_overflow_bitfield, /* complain_on_overflow */
1628 bfd_elf_generic_reloc, /* special_function */
1629 "R_MIPS_COPY", /* name */
1630 FALSE, /* partial_inplace */
1631 0x0, /* src_mask */
1632 0x0, /* dst_mask */
1633 FALSE); /* pcrel_offset */
1634
1635/* Specific to VxWorks. */
1636static reloc_howto_type mips_vxworks_jump_slot_howto_rela =
1637 HOWTO (R_MIPS_JUMP_SLOT, /* type */
1638 0, /* rightshift */
1639 2, /* size (0 = byte, 1 = short, 2 = long) */
1640 32, /* bitsize */
1641 FALSE, /* pc_relative */
1642 0, /* bitpos */
1643 complain_overflow_bitfield, /* complain_on_overflow */
1644 bfd_elf_generic_reloc, /* special_function */
1645 "R_MIPS_JUMP_SLOT", /* name */
1646 FALSE, /* partial_inplace */
1647 0x0, /* src_mask */
1648 0x0, /* dst_mask */
1649 FALSE); /* pcrel_offset */
1650
1651/* Implement elf_backend_bfd_reloc_type_lookup for VxWorks. */
1652
1653static reloc_howto_type *
1654mips_vxworks_bfd_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code)
1655{
1656 switch (code)
1657 {
1658 case BFD_RELOC_MIPS_COPY:
1659 return &mips_vxworks_copy_howto_rela;
1660 case BFD_RELOC_MIPS_JUMP_SLOT:
1661 return &mips_vxworks_jump_slot_howto_rela;
1662 default:
1663 return bfd_elf32_bfd_reloc_type_lookup (abfd, code);
1664 }
1665}
1666
1667/* Implement elf_backend_mips_rtype_to_lookup for VxWorks. */
1668
1669static reloc_howto_type *
1670mips_vxworks_rtype_to_howto (unsigned int r_type, bfd_boolean rela_p)
1671{
1672 switch (r_type)
1673 {
1674 case R_MIPS_COPY:
1675 return &mips_vxworks_copy_howto_rela;
1676 case R_MIPS_JUMP_SLOT:
1677 return &mips_vxworks_jump_slot_howto_rela;
1678 default:
1679 return mips_elf32_rtype_to_howto (r_type, rela_p);
1680 }
1681}
1682
1683/* Implement elf_backend_final_write_processing for VxWorks. */
1684
1685static void
1686mips_vxworks_final_write_processing (bfd *abfd, bfd_boolean linker)
1687{
1688 _bfd_mips_elf_final_write_processing (abfd, linker);
1689 elf_vxworks_final_write_processing (abfd, linker);
1690}
1691
1692#undef TARGET_LITTLE_SYM
1693#undef TARGET_LITTLE_NAME
1694#undef TARGET_BIG_SYM
1695#undef TARGET_BIG_NAME
1696
7fd91fe0
TS		 1697#undef ELF_MAXPAGESIZE
1698#undef ELF_COMMONPAGESIZE
1699
0a44bf69
RS		 1700#define TARGET_LITTLE_SYM bfd_elf32_littlemips_vxworks_vec
1701#define TARGET_LITTLE_NAME "elf32-littlemips-vxworks"
1702#define TARGET_BIG_SYM bfd_elf32_bigmips_vxworks_vec
1703#define TARGET_BIG_NAME "elf32-bigmips-vxworks"
1704
1705#undef elf32_bed
1706#define elf32_bed elf32_mips_vxworks_bed
1707
0a44bf69 1708#define ELF_MAXPAGESIZE 0x1000
7fd91fe0 1709#define ELF_COMMONPAGESIZE 0x1000
0a44bf69
RS		 1710
1711#undef elf_backend_want_got_plt
1712#define elf_backend_want_got_plt 1
1713#undef elf_backend_want_plt_sym
1714#define elf_backend_want_plt_sym 1
1715#undef elf_backend_got_symbol_offset
1716#define elf_backend_got_symbol_offset 0
1717#undef elf_backend_want_dynbss
1718#define elf_backend_want_dynbss 1
1719#undef elf_backend_may_use_rel_p
1720#define elf_backend_may_use_rel_p 0
1721#undef elf_backend_may_use_rela_p
1722#define elf_backend_may_use_rela_p 1
1723#undef elf_backend_default_use_rela_p
1724#define elf_backend_default_use_rela_p 1
1725#undef elf_backend_got_header_size
1726#define elf_backend_got_header_size (4 * 3)
1727#undef elf_backend_plt_readonly
1728#define elf_backend_plt_readonly 1
1729
1730#undef bfd_elf32_bfd_reloc_type_lookup
1731#define bfd_elf32_bfd_reloc_type_lookup \
1732 mips_vxworks_bfd_reloc_type_lookup
1733#undef elf_backend_mips_rtype_to_howto
1734#define elf_backend_mips_rtype_to_howto \
1735 mips_vxworks_rtype_to_howto
1736#undef elf_backend_adjust_dynamic_symbol
1737#define elf_backend_adjust_dynamic_symbol \
1738 _bfd_mips_vxworks_adjust_dynamic_symbol
1739#undef elf_backend_finish_dynamic_symbol
1740#define elf_backend_finish_dynamic_symbol \
1741 _bfd_mips_vxworks_finish_dynamic_symbol
1742#undef bfd_elf32_bfd_link_hash_table_create
1743#define bfd_elf32_bfd_link_hash_table_create \
1744 _bfd_mips_vxworks_link_hash_table_create
1745#undef elf_backend_add_symbol_hook
1746#define elf_backend_add_symbol_hook \
1747 elf_vxworks_add_symbol_hook
1748#undef elf_backend_link_output_symbol_hook
1749#define elf_backend_link_output_symbol_hook \
1750 elf_vxworks_link_output_symbol_hook
1751#undef elf_backend_emit_relocs
1752#define elf_backend_emit_relocs \
1753 elf_vxworks_emit_relocs
1754#undef elf_backend_final_write_processing
1755#define elf_backend_final_write_processing \
1756 mips_vxworks_final_write_processing
1757
1758#undef elf_backend_additional_program_headers
1759#undef elf_backend_modify_segment_map
1760#undef elf_backend_symbol_processing
1761/* NOTE: elf_backend_rela_normal is not defined for MIPS. */
1762
1763#include "elf32-target.h"
GDB Binutils - Deliverables
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