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[binutils.git] / bfd / elfarm-nabi.c
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252b5132 1/* 32-bit ELF support for ARM new abi option.
acf8aed4 2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
252b5132
RH		 3
4 This file is part of BFD, the Binary File Descriptor library.
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
19
20#include "elf/arm.h"
21#include "bfd.h"
22#include "sysdep.h"
23#include "libbfd.h"
24#include "elf-bfd.h"
25
26#ifndef NUM_ELEM
27#define NUM_ELEM(a) (sizeof (a) / (sizeof (a)[0]))
28#endif
29
acf8aed4 30#define USE_REL 1
252b5132
RH		 31
32#define TARGET_LITTLE_SYM bfd_elf32_littlearm_vec
33#define TARGET_LITTLE_NAME "elf32-littlearm"
34#define TARGET_BIG_SYM bfd_elf32_bigarm_vec
35#define TARGET_BIG_NAME "elf32-bigarm"
36
37#define elf_info_to_howto 0
ba96a88f 38#define elf_info_to_howto_rel elf32_arm_info_to_howto
252b5132 39
ba96a88f
NC		 40#define ARM_ELF_ABI_VERSION 0
41#define ARM_ELF_OS_ABI_VERSION ELFOSABI_ARM
252b5132
RH		 42
43static reloc_howto_type * elf32_arm_reloc_type_lookup
44 PARAMS ((bfd * abfd, bfd_reloc_code_real_type code));
b34976b6 45static bfd_boolean elf32_arm_nabi_grok_prstatus
2e67030c 46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
b34976b6 47static bfd_boolean elf32_arm_nabi_grok_psinfo
2e67030c 48 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
252b5132 49
dfc5f959 50/* Note: code such as elf32_arm_reloc_type_lookup expect to use e.g.
3e932841
KH		 51 R_ARM_PC24 as an index into this, and find the R_ARM_PC24 HOWTO
52 in that slot. */
dfc5f959 53
252b5132
RH		 54static reloc_howto_type elf32_arm_howto_table[] =
55{
56 /* No relocation */
57 HOWTO (R_ARM_NONE, /* type */
58 0, /* rightshift */
59 0, /* size (0 = byte, 1 = short, 2 = long) */
60 0, /* bitsize */
b34976b6 61 FALSE, /* pc_relative */
252b5132
RH		 62 0, /* bitpos */
63 complain_overflow_dont,/* complain_on_overflow */
64 bfd_elf_generic_reloc, /* special_function */
65 "R_ARM_NONE", /* name */
b34976b6 66 FALSE, /* partial_inplace */
252b5132
RH		 67 0, /* src_mask */
68 0, /* dst_mask */
b34976b6 69 FALSE), /* pcrel_offset */
252b5132
RH		 70
71 HOWTO (R_ARM_PC24, /* type */
72 2, /* rightshift */
73 2, /* size (0 = byte, 1 = short, 2 = long) */
74 24, /* bitsize */
b34976b6 75 TRUE, /* pc_relative */
252b5132
RH		 76 0, /* bitpos */
77 complain_overflow_signed,/* complain_on_overflow */
78 bfd_elf_generic_reloc, /* special_function */
79 "R_ARM_PC24", /* name */
b34976b6 80 FALSE, /* partial_inplace */
252b5132
RH		 81 0x00ffffff, /* src_mask */
82 0x00ffffff, /* dst_mask */
b34976b6 83 TRUE), /* pcrel_offset */
252b5132
RH		 84
85 /* 32 bit absolute */
86 HOWTO (R_ARM_ABS32, /* type */
87 0, /* rightshift */
88 2, /* size (0 = byte, 1 = short, 2 = long) */
89 32, /* bitsize */
b34976b6 90 FALSE, /* pc_relative */
252b5132
RH		 91 0, /* bitpos */
92 complain_overflow_bitfield,/* complain_on_overflow */
93 bfd_elf_generic_reloc, /* special_function */
94 "R_ARM_ABS32", /* name */
b34976b6 95 FALSE, /* partial_inplace */
252b5132
RH		 96 0xffffffff, /* src_mask */
97 0xffffffff, /* dst_mask */
b34976b6 98 FALSE), /* pcrel_offset */
252b5132
RH		 99
100 /* standard 32bit pc-relative reloc */
101 HOWTO (R_ARM_REL32, /* type */
102 0, /* rightshift */
103 2, /* size (0 = byte, 1 = short, 2 = long) */
104 32, /* bitsize */
b34976b6 105 TRUE, /* pc_relative */
252b5132
RH		 106 0, /* bitpos */
107 complain_overflow_bitfield,/* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_ARM_REL32", /* name */
b34976b6 110 FALSE, /* partial_inplace */
252b5132
RH		 111 0xffffffff, /* src_mask */
112 0xffffffff, /* dst_mask */
b34976b6 113 TRUE), /* pcrel_offset */
252b5132
RH		 114
115 /* 8 bit absolute */
116 HOWTO (R_ARM_PC13, /* type */
117 0, /* rightshift */
118 0, /* size (0 = byte, 1 = short, 2 = long) */
119 8, /* bitsize */
b34976b6 120 FALSE, /* pc_relative */
252b5132
RH		 121 0, /* bitpos */
122 complain_overflow_bitfield,/* complain_on_overflow */
123 bfd_elf_generic_reloc, /* special_function */
124 "R_ARM_PC13", /* name */
b34976b6 125 FALSE, /* partial_inplace */
252b5132
RH		 126 0x000000ff, /* src_mask */
127 0x000000ff, /* dst_mask */
b34976b6 128 FALSE), /* pcrel_offset */
252b5132
RH		 129
130 /* 16 bit absolute */
131 HOWTO (R_ARM_ABS16, /* type */
132 0, /* rightshift */
133 1, /* size (0 = byte, 1 = short, 2 = long) */
134 16, /* bitsize */
b34976b6 135 FALSE, /* pc_relative */
252b5132
RH		 136 0, /* bitpos */
137 complain_overflow_bitfield,/* complain_on_overflow */
138 bfd_elf_generic_reloc, /* special_function */
139 "R_ARM_ABS16", /* name */
b34976b6 140 FALSE, /* partial_inplace */
8d0da3c2
DD		 141 0x0000ffff, /* src_mask */
142 0x0000ffff, /* dst_mask */
b34976b6 143 FALSE), /* pcrel_offset */
252b5132
RH		 144
145 /* 12 bit absolute */
146 HOWTO (R_ARM_ABS12, /* type */
147 0, /* rightshift */
148 2, /* size (0 = byte, 1 = short, 2 = long) */
149 12, /* bitsize */
b34976b6 150 FALSE, /* pc_relative */
252b5132
RH		 151 0, /* bitpos */
152 complain_overflow_bitfield,/* complain_on_overflow */
153 bfd_elf_generic_reloc, /* special_function */
154 "R_ARM_ABS12", /* name */
b34976b6 155 FALSE, /* partial_inplace */
252b5132
RH		 156 0x000008ff, /* src_mask */
157 0x000008ff, /* dst_mask */
b34976b6 158 FALSE), /* pcrel_offset */
252b5132
RH		 159
160 HOWTO (R_ARM_THM_ABS5, /* type */
161 6, /* rightshift */
162 1, /* size (0 = byte, 1 = short, 2 = long) */
163 5, /* bitsize */
b34976b6 164 FALSE, /* pc_relative */
252b5132
RH		 165 0, /* bitpos */
166 complain_overflow_bitfield,/* complain_on_overflow */
167 bfd_elf_generic_reloc, /* special_function */
168 "R_ARM_THM_ABS5", /* name */
b34976b6 169 FALSE, /* partial_inplace */
252b5132
RH		 170 0x000007e0, /* src_mask */
171 0x000007e0, /* dst_mask */
b34976b6 172 FALSE), /* pcrel_offset */
252b5132
RH		 173
174 /* 8 bit absolute */
175 HOWTO (R_ARM_ABS8, /* type */
176 0, /* rightshift */
177 0, /* size (0 = byte, 1 = short, 2 = long) */
178 8, /* bitsize */
b34976b6 179 FALSE, /* pc_relative */
252b5132
RH		 180 0, /* bitpos */
181 complain_overflow_bitfield,/* complain_on_overflow */
182 bfd_elf_generic_reloc, /* special_function */
183 "R_ARM_ABS8", /* name */
b34976b6 184 FALSE, /* partial_inplace */
252b5132
RH		 185 0x000000ff, /* src_mask */
186 0x000000ff, /* dst_mask */
b34976b6 187 FALSE), /* pcrel_offset */
252b5132
RH		 188
189 HOWTO (R_ARM_SBREL32, /* type */
190 0, /* rightshift */
191 0, /* size (0 = byte, 1 = short, 2 = long) */
192 0, /* bitsize */
b34976b6 193 FALSE, /* pc_relative */
252b5132
RH		 194 0, /* bitpos */
195 complain_overflow_dont,/* complain_on_overflow */
196 bfd_elf_generic_reloc, /* special_function */
197 "R_ARM_SBREL32", /* name */
b34976b6 198 FALSE, /* partial_inplace */
252b5132
RH		 199 0, /* src_mask */
200 0, /* dst_mask */
b34976b6 201 FALSE), /* pcrel_offset */
252b5132
RH		 202
203 HOWTO (R_ARM_THM_PC22, /* type */
204 1, /* rightshift */
205 2, /* size (0 = byte, 1 = short, 2 = long) */
206 23, /* bitsize */
b34976b6 207 TRUE, /* pc_relative */
252b5132
RH		 208 0, /* bitpos */
209 complain_overflow_signed,/* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_ARM_THM_PC22", /* name */
b34976b6 212 FALSE, /* partial_inplace */
252b5132
RH		 213 0x07ff07ff, /* src_mask */
214 0x07ff07ff, /* dst_mask */
b34976b6 215 TRUE), /* pcrel_offset */
252b5132
RH		 216
217 HOWTO (R_ARM_THM_PC8, /* type */
218 1, /* rightshift */
219 1, /* size (0 = byte, 1 = short, 2 = long) */
220 8, /* bitsize */
b34976b6 221 TRUE, /* pc_relative */
252b5132
RH		 222 0, /* bitpos */
223 complain_overflow_signed,/* complain_on_overflow */
224 bfd_elf_generic_reloc, /* special_function */
225 "R_ARM_THM_PC8", /* name */
b34976b6 226 FALSE, /* partial_inplace */
252b5132
RH		 227 0x000000ff, /* src_mask */
228 0x000000ff, /* dst_mask */
b34976b6 229 TRUE), /* pcrel_offset */
252b5132
RH		 230
231 HOWTO (R_ARM_AMP_VCALL9, /* type */
232 1, /* rightshift */
233 1, /* size (0 = byte, 1 = short, 2 = long) */
234 8, /* bitsize */
b34976b6 235 TRUE, /* pc_relative */
252b5132
RH		 236 0, /* bitpos */
237 complain_overflow_signed,/* complain_on_overflow */
238 bfd_elf_generic_reloc, /* special_function */
239 "R_ARM_AMP_VCALL9", /* name */
b34976b6 240 FALSE, /* partial_inplace */
252b5132
RH		 241 0x000000ff, /* src_mask */
242 0x000000ff, /* dst_mask */
b34976b6 243 TRUE), /* pcrel_offset */
252b5132
RH		 244
245 HOWTO (R_ARM_SWI24, /* type */
246 0, /* rightshift */
247 0, /* size (0 = byte, 1 = short, 2 = long) */
248 0, /* bitsize */
b34976b6 249 FALSE, /* pc_relative */
252b5132
RH		 250 0, /* bitpos */
251 complain_overflow_signed,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_ARM_SWI24", /* name */
b34976b6 254 FALSE, /* partial_inplace */
252b5132
RH		 255 0x00000000, /* src_mask */
256 0x00000000, /* dst_mask */
b34976b6 257 FALSE), /* pcrel_offset */
252b5132
RH		 258
259 HOWTO (R_ARM_THM_SWI8, /* type */
260 0, /* rightshift */
261 0, /* size (0 = byte, 1 = short, 2 = long) */
262 0, /* bitsize */
b34976b6 263 FALSE, /* pc_relative */
252b5132
RH		 264 0, /* bitpos */
265 complain_overflow_signed,/* complain_on_overflow */
266 bfd_elf_generic_reloc, /* special_function */
267 "R_ARM_SWI8", /* name */
b34976b6 268 FALSE, /* partial_inplace */
252b5132
RH		 269 0x00000000, /* src_mask */
270 0x00000000, /* dst_mask */
b34976b6 271 FALSE), /* pcrel_offset */
252b5132 272
dfc5f959 273 /* BLX instruction for the ARM. */
252b5132 274 HOWTO (R_ARM_XPC25, /* type */
dfc5f959
NC		 275 2, /* rightshift */
276 2, /* size (0 = byte, 1 = short, 2 = long) */
277 25, /* bitsize */
b34976b6 278 TRUE, /* pc_relative */
252b5132
RH		 279 0, /* bitpos */
280 complain_overflow_signed,/* complain_on_overflow */
281 bfd_elf_generic_reloc, /* special_function */
282 "R_ARM_XPC25", /* name */
b34976b6 283 FALSE, /* partial_inplace */
dfc5f959
NC		 284 0x00ffffff, /* src_mask */
285 0x00ffffff, /* dst_mask */
b34976b6 286 TRUE), /* pcrel_offset */
3e932841 287
dfc5f959 288 /* BLX instruction for the Thumb. */
252b5132 289 HOWTO (R_ARM_THM_XPC22, /* type */
dfc5f959
NC		 290 2, /* rightshift */
291 2, /* size (0 = byte, 1 = short, 2 = long) */
292 22, /* bitsize */
b34976b6 293 TRUE, /* pc_relative */
252b5132
RH		 294 0, /* bitpos */
295 complain_overflow_signed,/* complain_on_overflow */
296 bfd_elf_generic_reloc, /* special_function */
297 "R_ARM_THM_XPC22", /* name */
b34976b6 298 FALSE, /* partial_inplace */
dfc5f959
NC		 299 0x07ff07ff, /* src_mask */
300 0x07ff07ff, /* dst_mask */
b34976b6 301 TRUE), /* pcrel_offset */
3e932841 302
252b5132
RH		 303 /* These next three relocs are not defined, but we need to fill the space. */
304
305 HOWTO (R_ARM_NONE, /* type */
306 0, /* rightshift */
307 0, /* size (0 = byte, 1 = short, 2 = long) */
308 0, /* bitsize */
b34976b6 309 FALSE, /* pc_relative */
252b5132
RH		 310 0, /* bitpos */
311 complain_overflow_dont,/* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_ARM_unknown_17", /* name */
b34976b6 314 FALSE, /* partial_inplace */
252b5132
RH		 315 0, /* src_mask */
316 0, /* dst_mask */
b34976b6 317 FALSE), /* pcrel_offset */
252b5132
RH		 318
319 HOWTO (R_ARM_NONE, /* type */
320 0, /* rightshift */
321 0, /* size (0 = byte, 1 = short, 2 = long) */
322 0, /* bitsize */
b34976b6 323 FALSE, /* pc_relative */
252b5132
RH		 324 0, /* bitpos */
325 complain_overflow_dont,/* complain_on_overflow */
326 bfd_elf_generic_reloc, /* special_function */
327 "R_ARM_unknown_18", /* name */
b34976b6 328 FALSE, /* partial_inplace */
252b5132
RH		 329 0, /* src_mask */
330 0, /* dst_mask */
b34976b6 331 FALSE), /* pcrel_offset */
252b5132
RH		 332
333 HOWTO (R_ARM_NONE, /* type */
334 0, /* rightshift */
335 0, /* size (0 = byte, 1 = short, 2 = long) */
336 0, /* bitsize */
b34976b6 337 FALSE, /* pc_relative */
252b5132
RH		 338 0, /* bitpos */
339 complain_overflow_dont,/* complain_on_overflow */
340 bfd_elf_generic_reloc, /* special_function */
341 "R_ARM_unknown_19", /* name */
b34976b6 342 FALSE, /* partial_inplace */
252b5132
RH		 343 0, /* src_mask */
344 0, /* dst_mask */
b34976b6 345 FALSE), /* pcrel_offset */
252b5132
RH		 346
347 /* Relocs used in ARM Linux */
3e932841 348
252b5132
RH		 349 HOWTO (R_ARM_COPY, /* type */
350 0, /* rightshift */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
352 32, /* bitsize */
b34976b6 353 FALSE, /* pc_relative */
252b5132
RH		 354 0, /* bitpos */
355 complain_overflow_bitfield,/* complain_on_overflow */
356 bfd_elf_generic_reloc, /* special_function */
357 "R_ARM_COPY", /* name */
b34976b6 358 TRUE, /* partial_inplace */
252b5132
RH		 359 0xffffffff, /* src_mask */
360 0xffffffff, /* dst_mask */
b34976b6 361 FALSE), /* pcrel_offset */
252b5132
RH		 362
363 HOWTO (R_ARM_GLOB_DAT, /* type */
364 0, /* rightshift */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
366 32, /* bitsize */
b34976b6 367 FALSE, /* pc_relative */
252b5132
RH		 368 0, /* bitpos */
369 complain_overflow_bitfield,/* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_ARM_GLOB_DAT", /* name */
b34976b6 372 TRUE, /* partial_inplace */
252b5132
RH		 373 0xffffffff, /* src_mask */
374 0xffffffff, /* dst_mask */
b34976b6 375 FALSE), /* pcrel_offset */
3e932841 376
252b5132
RH		 377 HOWTO (R_ARM_JUMP_SLOT, /* type */
378 0, /* rightshift */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
380 32, /* bitsize */
b34976b6 381 FALSE, /* pc_relative */
252b5132
RH		 382 0, /* bitpos */
383 complain_overflow_bitfield,/* complain_on_overflow */
384 bfd_elf_generic_reloc, /* special_function */
385 "R_ARM_JUMP_SLOT", /* name */
b34976b6 386 TRUE, /* partial_inplace */
252b5132
RH		 387 0xffffffff, /* src_mask */
388 0xffffffff, /* dst_mask */
b34976b6 389 FALSE), /* pcrel_offset */
3e932841 390
252b5132
RH		 391 HOWTO (R_ARM_RELATIVE, /* type */
392 0, /* rightshift */
393 2, /* size (0 = byte, 1 = short, 2 = long) */
394 32, /* bitsize */
b34976b6 395 FALSE, /* pc_relative */
252b5132
RH		 396 0, /* bitpos */
397 complain_overflow_bitfield,/* complain_on_overflow */
398 bfd_elf_generic_reloc, /* special_function */
399 "R_ARM_RELATIVE", /* name */
b34976b6 400 TRUE, /* partial_inplace */
252b5132
RH		 401 0xffffffff, /* src_mask */
402 0xffffffff, /* dst_mask */
b34976b6 403 FALSE), /* pcrel_offset */
3e932841 404
252b5132
RH		 405 HOWTO (R_ARM_GOTOFF, /* type */
406 0, /* rightshift */
407 2, /* size (0 = byte, 1 = short, 2 = long) */
408 32, /* bitsize */
b34976b6 409 FALSE, /* pc_relative */
252b5132
RH		 410 0, /* bitpos */
411 complain_overflow_bitfield,/* complain_on_overflow */
412 bfd_elf_generic_reloc, /* special_function */
413 "R_ARM_GOTOFF", /* name */
b34976b6 414 TRUE, /* partial_inplace */
252b5132
RH		 415 0xffffffff, /* src_mask */
416 0xffffffff, /* dst_mask */
b34976b6 417 FALSE), /* pcrel_offset */
3e932841 418
252b5132
RH		 419 HOWTO (R_ARM_GOTPC, /* type */
420 0, /* rightshift */
421 2, /* size (0 = byte, 1 = short, 2 = long) */
422 32, /* bitsize */
b34976b6 423 TRUE, /* pc_relative */
252b5132
RH		 424 0, /* bitpos */
425 complain_overflow_bitfield,/* complain_on_overflow */
426 bfd_elf_generic_reloc, /* special_function */
427 "R_ARM_GOTPC", /* name */
b34976b6 428 TRUE, /* partial_inplace */
252b5132
RH		 429 0xffffffff, /* src_mask */
430 0xffffffff, /* dst_mask */
b34976b6 431 TRUE), /* pcrel_offset */
3e932841 432
252b5132
RH		 433 HOWTO (R_ARM_GOT32, /* type */
434 0, /* rightshift */
435 2, /* size (0 = byte, 1 = short, 2 = long) */
436 32, /* bitsize */
b34976b6 437 FALSE, /* pc_relative */
252b5132
RH		 438 0, /* bitpos */
439 complain_overflow_bitfield,/* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_ARM_GOT32", /* name */
b34976b6 442 TRUE, /* partial_inplace */
252b5132
RH		 443 0xffffffff, /* src_mask */
444 0xffffffff, /* dst_mask */
b34976b6 445 FALSE), /* pcrel_offset */
3e932841 446
252b5132
RH		 447 HOWTO (R_ARM_PLT32, /* type */
448 2, /* rightshift */
449 2, /* size (0 = byte, 1 = short, 2 = long) */
450 26, /* bitsize */
b34976b6 451 TRUE, /* pc_relative */
252b5132
RH		 452 0, /* bitpos */
453 complain_overflow_bitfield,/* complain_on_overflow */
454 bfd_elf_generic_reloc, /* special_function */
455 "R_ARM_PLT32", /* name */
b34976b6 456 TRUE, /* partial_inplace */
252b5132
RH		 457 0x00ffffff, /* src_mask */
458 0x00ffffff, /* dst_mask */
b34976b6 459 TRUE), /* pcrel_offset */
3e932841
KH		 460
461 /* End of relocs used in ARM Linux */
252b5132
RH		 462
463 HOWTO (R_ARM_RREL32, /* type */
464 0, /* rightshift */
465 0, /* size (0 = byte, 1 = short, 2 = long) */
466 0, /* bitsize */
b34976b6 467 FALSE, /* pc_relative */
252b5132
RH		 468 0, /* bitpos */
469 complain_overflow_dont,/* complain_on_overflow */
470 bfd_elf_generic_reloc, /* special_function */
471 "R_ARM_RREL32", /* name */
b34976b6 472 FALSE, /* partial_inplace */
252b5132
RH		 473 0, /* src_mask */
474 0, /* dst_mask */
b34976b6 475 FALSE), /* pcrel_offset */
252b5132
RH		 476
477 HOWTO (R_ARM_RABS32, /* type */
478 0, /* rightshift */
479 0, /* size (0 = byte, 1 = short, 2 = long) */
480 0, /* bitsize */
b34976b6 481 FALSE, /* pc_relative */
252b5132
RH		 482 0, /* bitpos */
483 complain_overflow_dont,/* complain_on_overflow */
484 bfd_elf_generic_reloc, /* special_function */
485 "R_ARM_RABS32", /* name */
b34976b6 486 FALSE, /* partial_inplace */
252b5132
RH		 487 0, /* src_mask */
488 0, /* dst_mask */
b34976b6 489 FALSE), /* pcrel_offset */
252b5132
RH		 490
491 HOWTO (R_ARM_RPC24, /* type */
492 0, /* rightshift */
493 0, /* size (0 = byte, 1 = short, 2 = long) */
494 0, /* bitsize */
b34976b6 495 FALSE, /* pc_relative */
252b5132
RH		 496 0, /* bitpos */
497 complain_overflow_dont,/* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
499 "R_ARM_RPC24", /* name */
b34976b6 500 FALSE, /* partial_inplace */
252b5132
RH		 501 0, /* src_mask */
502 0, /* dst_mask */
b34976b6 503 FALSE), /* pcrel_offset */
252b5132
RH		 504
505 HOWTO (R_ARM_RBASE, /* type */
506 0, /* rightshift */
507 0, /* size (0 = byte, 1 = short, 2 = long) */
508 0, /* bitsize */
b34976b6 509 FALSE, /* pc_relative */
252b5132
RH		 510 0, /* bitpos */
511 complain_overflow_dont,/* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
513 "R_ARM_RBASE", /* name */
b34976b6 514 FALSE, /* partial_inplace */
252b5132
RH		 515 0, /* src_mask */
516 0, /* dst_mask */
b34976b6 517 FALSE), /* pcrel_offset */
252b5132
RH		 518
519};
520
521 /* GNU extension to record C++ vtable hierarchy */
522static reloc_howto_type elf32_arm_vtinherit_howto =
523 HOWTO (R_ARM_GNU_VTINHERIT, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 0, /* bitsize */
b34976b6 527 FALSE, /* pc_relative */
252b5132
RH		 528 0, /* bitpos */
529 complain_overflow_dont, /* complain_on_overflow */
530 NULL, /* special_function */
531 "R_ARM_GNU_VTINHERIT", /* name */
b34976b6 532 FALSE, /* partial_inplace */
252b5132
RH		 533 0, /* src_mask */
534 0, /* dst_mask */
b34976b6 535 FALSE); /* pcrel_offset */
252b5132
RH		 536
537 /* GNU extension to record C++ vtable member usage */
538static reloc_howto_type elf32_arm_vtentry_howto =
539 HOWTO (R_ARM_GNU_VTENTRY, /* type */
540 0, /* rightshift */
541 2, /* size (0 = byte, 1 = short, 2 = long) */
542 0, /* bitsize */
b34976b6 543 FALSE, /* pc_relative */
252b5132
RH		 544 0, /* bitpos */
545 complain_overflow_dont, /* complain_on_overflow */
546 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
547 "R_ARM_GNU_VTENTRY", /* name */
b34976b6 548 FALSE, /* partial_inplace */
252b5132
RH		 549 0, /* src_mask */
550 0, /* dst_mask */
b34976b6 551 FALSE); /* pcrel_offset */
252b5132
RH		 552
553 /* 12 bit pc relative */
554static reloc_howto_type elf32_arm_thm_pc11_howto =
555 HOWTO (R_ARM_THM_PC11, /* type */
556 1, /* rightshift */
557 1, /* size (0 = byte, 1 = short, 2 = long) */
558 11, /* bitsize */
b34976b6 559 TRUE, /* pc_relative */
252b5132
RH		 560 0, /* bitpos */
561 complain_overflow_signed, /* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_ARM_THM_PC11", /* name */
b34976b6 564 FALSE, /* partial_inplace */
252b5132
RH		 565 0x000007ff, /* src_mask */
566 0x000007ff, /* dst_mask */
b34976b6 567 TRUE); /* pcrel_offset */
252b5132
RH		 568
569 /* 12 bit pc relative */
570static reloc_howto_type elf32_arm_thm_pc9_howto =
571 HOWTO (R_ARM_THM_PC9, /* type */
572 1, /* rightshift */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
574 8, /* bitsize */
b34976b6 575 TRUE, /* pc_relative */
252b5132
RH		 576 0, /* bitpos */
577 complain_overflow_signed, /* complain_on_overflow */
578 bfd_elf_generic_reloc, /* special_function */
579 "R_ARM_THM_PC9", /* name */
b34976b6 580 FALSE, /* partial_inplace */
252b5132
RH		 581 0x000000ff, /* src_mask */
582 0x000000ff, /* dst_mask */
b34976b6 583 TRUE); /* pcrel_offset */
252b5132 584
917583ad 585static void elf32_arm_info_to_howto
947216bf 586 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
917583ad 587
252b5132 588static void
ba96a88f 589elf32_arm_info_to_howto (abfd, bfd_reloc, elf_reloc)
5f771d47 590 bfd * abfd ATTRIBUTE_UNUSED;
252b5132 591 arelent * bfd_reloc;
947216bf 592 Elf_Internal_Rela * elf_reloc;
252b5132
RH		 593{
594 unsigned int r_type;
3e932841 595
252b5132
RH		 596 r_type = ELF32_R_TYPE (elf_reloc->r_info);
597
598 switch (r_type)
599 {
600 case R_ARM_GNU_VTINHERIT:
601 bfd_reloc->howto = & elf32_arm_vtinherit_howto;
602 break;
3e932841 603
252b5132
RH		 604 case R_ARM_GNU_VTENTRY:
605 bfd_reloc->howto = & elf32_arm_vtentry_howto;
606 break;
3e932841 607
252b5132
RH		 608 case R_ARM_THM_PC11:
609 bfd_reloc->howto = & elf32_arm_thm_pc11_howto;
610 break;
3e932841 611
252b5132
RH		 612 case R_ARM_THM_PC9:
613 bfd_reloc->howto = & elf32_arm_thm_pc9_howto;
614 break;
3e932841 615
252b5132
RH		 616 default:
617 if (r_type >= NUM_ELEM (elf32_arm_howto_table))
618 bfd_reloc->howto = NULL;
619 else
620 bfd_reloc->howto = & elf32_arm_howto_table[r_type];
621 break;
622 }
623}
3e932841 624
252b5132
RH		 625struct elf32_arm_reloc_map
626 {
627 bfd_reloc_code_real_type bfd_reloc_val;
628 unsigned char elf_reloc_val;
629 };
630
631static const struct elf32_arm_reloc_map elf32_arm_reloc_map[] =
917583ad
NC		 632 {
633 {BFD_RELOC_NONE, R_ARM_NONE},
634 {BFD_RELOC_ARM_PCREL_BRANCH, R_ARM_PC24},
635 {BFD_RELOC_ARM_PCREL_BLX, R_ARM_XPC25},
636 {BFD_RELOC_THUMB_PCREL_BLX, R_ARM_THM_XPC22},
637 {BFD_RELOC_32, R_ARM_ABS32},
638 {BFD_RELOC_32_PCREL, R_ARM_REL32},
639 {BFD_RELOC_8, R_ARM_ABS8},
640 {BFD_RELOC_16, R_ARM_ABS16},
641 {BFD_RELOC_ARM_OFFSET_IMM, R_ARM_ABS12},
642 {BFD_RELOC_ARM_THUMB_OFFSET, R_ARM_THM_ABS5},
643 {BFD_RELOC_THUMB_PCREL_BRANCH23, R_ARM_THM_PC22},
644 {BFD_RELOC_ARM_COPY, R_ARM_COPY},
645 {BFD_RELOC_ARM_GLOB_DAT, R_ARM_GLOB_DAT},
646 {BFD_RELOC_ARM_JUMP_SLOT, R_ARM_JUMP_SLOT},
647 {BFD_RELOC_ARM_RELATIVE, R_ARM_RELATIVE},
648 {BFD_RELOC_ARM_GOTOFF, R_ARM_GOTOFF},
649 {BFD_RELOC_ARM_GOTPC, R_ARM_GOTPC},
650 {BFD_RELOC_ARM_GOT32, R_ARM_GOT32},
651 {BFD_RELOC_ARM_PLT32, R_ARM_PLT32}
652 };
252b5132
RH		 653
654static reloc_howto_type *
655elf32_arm_reloc_type_lookup (abfd, code)
5f771d47 656 bfd *abfd ATTRIBUTE_UNUSED;
252b5132
RH		 657 bfd_reloc_code_real_type code;
658{
659 unsigned int i;
660
661 switch (code)
662 {
663 case BFD_RELOC_VTABLE_INHERIT:
664 return & elf32_arm_vtinherit_howto;
665
666 case BFD_RELOC_VTABLE_ENTRY:
667 return & elf32_arm_vtentry_howto;
668
669 case BFD_RELOC_THUMB_PCREL_BRANCH12:
670 return & elf32_arm_thm_pc11_howto;
671
672 case BFD_RELOC_THUMB_PCREL_BRANCH9:
673 return & elf32_arm_thm_pc9_howto;
674
675 default:
676 for (i = 0; i < NUM_ELEM (elf32_arm_reloc_map); i ++)
677 if (elf32_arm_reloc_map[i].bfd_reloc_val == code)
678 return & elf32_arm_howto_table[elf32_arm_reloc_map[i].elf_reloc_val];
3e932841 679
252b5132
RH		 680 return NULL;
681 }
682}
683
c5fccbec 684/* Support for core dump NOTE sections */
b34976b6 685static bfd_boolean
c5fccbec
DJ		 686elf32_arm_nabi_grok_prstatus (abfd, note)
687 bfd *abfd;
688 Elf_Internal_Note *note;
689{
690 int offset;
dc810e39 691 size_t raw_size;
c5fccbec
DJ		 692
693 switch (note->descsz)
694 {
695 default:
b34976b6 696 return FALSE;
c5fccbec
DJ		 697
698 case 148: /* Linux/ARM 32-bit*/
699 /* pr_cursig */
700 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
701
702 /* pr_pid */
703 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
704
705 /* pr_reg */
706 offset = 72;
707 raw_size = 72;
708
709 break;
710 }
711
712 /* Make a ".reg/999" section. */
713 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
714 raw_size, note->descpos + offset);
715}
716
b34976b6 717static bfd_boolean
c5fccbec
DJ		 718elf32_arm_nabi_grok_psinfo (abfd, note)
719 bfd *abfd;
720 Elf_Internal_Note *note;
721{
722 switch (note->descsz)
723 {
724 default:
b34976b6 725 return FALSE;
c5fccbec
DJ		 726
727 case 124: /* Linux/ARM elf_prpsinfo */
728 elf_tdata (abfd)->core_program
729 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
730 elf_tdata (abfd)->core_command
731 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
732 }
733
734 /* Note that for some reason, a spurious space is tacked
735 onto the end of the args in some (at least one anyway)
736 implementations, so strip it off if it exists. */
737
738 {
739 char *command = elf_tdata (abfd)->core_command;
740 int n = strlen (command);
741
742 if (0 < n && command[n - 1] == ' ')
743 command[n - 1] = '\0';
744 }
745
b34976b6 746 return TRUE;
c5fccbec
DJ		 747}
748
749#define elf_backend_grok_prstatus elf32_arm_nabi_grok_prstatus
750#define elf_backend_grok_psinfo elf32_arm_nabi_grok_psinfo
751
252b5132 752#include "elf32-arm.h"
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