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2005-05-06 H.J. Lu <hongjiu.lu@intel.com>
[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
CommitLineData
252b5132 1/* PowerPC-specific support for 32-bit ELF
051d5130 2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
264a1fe0 3 2004, 2005 Free Software Foundation, Inc.
252b5132
RH		 4 Written by Ian Lance Taylor, Cygnus Support.
5
ae9a127f 6 This file is part of BFD, the Binary File Descriptor library.
252b5132 7
ae9a127f
NC		 8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
252b5132 12
ae9a127f
NC		 13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
252b5132 17
ae9a127f 18 You should have received a copy of the GNU General Public License
fc0bffd6 19 along with this program; if not, write to the
3e110533 20 Free Software Foundation, Inc., 51 Franklin Street - Fifth Floor,
53e09e0a 21 Boston, MA 02110-1301, USA. */
252b5132
RH		 22
23/* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
27
28#include "bfd.h"
29#include "sysdep.h"
30#include "bfdlink.h"
31#include "libbfd.h"
32#include "elf-bfd.h"
33#include "elf/ppc.h"
7619e7c7 34#include "elf32-ppc.h"
252b5132 35
f0fe0e16 36/* RELA relocations are used here. */
252b5132 37
252b5132 38static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
55fd94b0 39 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
7619e7c7 40static bfd_reloc_status_type ppc_elf_unhandled_reloc
55fd94b0 41 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
252b5132 42
70bccea4
AM		 43/* Branch prediction bit for branch taken relocs. */
44#define BRANCH_PREDICT_BIT 0x200000
45/* Mask to set RA in memory instructions. */
46#define RA_REGISTER_MASK 0x001f0000
47/* Value to shift register by to insert RA. */
48#define RA_REGISTER_SHIFT 16
252b5132
RH		 49
50/* The name of the dynamic interpreter. This is put in the .interp
51 section. */
252b5132
RH		 52#define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
53
54/* The size in bytes of an entry in the procedure linkage table. */
55#define PLT_ENTRY_SIZE 12
56/* The initial size of the plt reserved for the dynamic linker. */
57#define PLT_INITIAL_ENTRY_SIZE 72
58/* The size of the gap between entries in the PLT. */
59#define PLT_SLOT_SIZE 8
60/* The number of single-slot PLT entries (the rest use two slots). */
61#define PLT_NUM_SINGLE_ENTRIES 8192
62
7619e7c7
AM		 63/* Some nop instructions. */
64#define NOP 0x60000000
65#define CROR_151515 0x4def7b82
66#define CROR_313131 0x4ffffb82
67
68/* Offset of tp and dtp pointers from start of TLS block. */
69#define TP_OFFSET 0x7000
70#define DTP_OFFSET 0x8000
7fce784e 71\f
e47cd125 72static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
252b5132 73
8da6118f 74static reloc_howto_type ppc_elf_howto_raw[] = {
252b5132
RH		 75 /* This reloc does nothing. */
76 HOWTO (R_PPC_NONE, /* type */
77 0, /* rightshift */
78 2, /* size (0 = byte, 1 = short, 2 = long) */
79 32, /* bitsize */
b34976b6 80 FALSE, /* pc_relative */
252b5132
RH		 81 0, /* bitpos */
82 complain_overflow_bitfield, /* complain_on_overflow */
83 bfd_elf_generic_reloc, /* special_function */
84 "R_PPC_NONE", /* name */
b34976b6 85 FALSE, /* partial_inplace */
252b5132
RH		 86 0, /* src_mask */
87 0, /* dst_mask */
b34976b6 88 FALSE), /* pcrel_offset */
252b5132
RH		 89
90 /* A standard 32 bit relocation. */
91 HOWTO (R_PPC_ADDR32, /* type */
92 0, /* rightshift */
93 2, /* size (0 = byte, 1 = short, 2 = long) */
94 32, /* bitsize */
b34976b6 95 FALSE, /* pc_relative */
252b5132
RH		 96 0, /* bitpos */
97 complain_overflow_bitfield, /* complain_on_overflow */
98 bfd_elf_generic_reloc, /* special_function */
99 "R_PPC_ADDR32", /* name */
b34976b6 100 FALSE, /* partial_inplace */
252b5132
RH		 101 0, /* src_mask */
102 0xffffffff, /* dst_mask */
b34976b6 103 FALSE), /* pcrel_offset */
252b5132
RH		 104
105 /* An absolute 26 bit branch; the lower two bits must be zero.
106 FIXME: we don't check that, we just clear them. */
107 HOWTO (R_PPC_ADDR24, /* type */
108 0, /* rightshift */
109 2, /* size (0 = byte, 1 = short, 2 = long) */
110 26, /* bitsize */
b34976b6 111 FALSE, /* pc_relative */
252b5132
RH		 112 0, /* bitpos */
113 complain_overflow_bitfield, /* complain_on_overflow */
114 bfd_elf_generic_reloc, /* special_function */
115 "R_PPC_ADDR24", /* name */
b34976b6 116 FALSE, /* partial_inplace */
252b5132
RH		 117 0, /* src_mask */
118 0x3fffffc, /* dst_mask */
b34976b6 119 FALSE), /* pcrel_offset */
252b5132
RH		 120
121 /* A standard 16 bit relocation. */
122 HOWTO (R_PPC_ADDR16, /* type */
123 0, /* rightshift */
124 1, /* size (0 = byte, 1 = short, 2 = long) */
125 16, /* bitsize */
b34976b6 126 FALSE, /* pc_relative */
252b5132
RH		 127 0, /* bitpos */
128 complain_overflow_bitfield, /* complain_on_overflow */
129 bfd_elf_generic_reloc, /* special_function */
130 "R_PPC_ADDR16", /* name */
b34976b6 131 FALSE, /* partial_inplace */
252b5132
RH		 132 0, /* src_mask */
133 0xffff, /* dst_mask */
b34976b6 134 FALSE), /* pcrel_offset */
252b5132
RH		 135
136 /* A 16 bit relocation without overflow. */
137 HOWTO (R_PPC_ADDR16_LO, /* type */
138 0, /* rightshift */
139 1, /* size (0 = byte, 1 = short, 2 = long) */
140 16, /* bitsize */
b34976b6 141 FALSE, /* pc_relative */
252b5132
RH		 142 0, /* bitpos */
143 complain_overflow_dont,/* complain_on_overflow */
144 bfd_elf_generic_reloc, /* special_function */
145 "R_PPC_ADDR16_LO", /* name */
b34976b6 146 FALSE, /* partial_inplace */
252b5132
RH		 147 0, /* src_mask */
148 0xffff, /* dst_mask */
b34976b6 149 FALSE), /* pcrel_offset */
252b5132
RH		 150
151 /* The high order 16 bits of an address. */
152 HOWTO (R_PPC_ADDR16_HI, /* type */
153 16, /* rightshift */
154 1, /* size (0 = byte, 1 = short, 2 = long) */
155 16, /* bitsize */
b34976b6 156 FALSE, /* pc_relative */
252b5132
RH		 157 0, /* bitpos */
158 complain_overflow_dont, /* complain_on_overflow */
159 bfd_elf_generic_reloc, /* special_function */
160 "R_PPC_ADDR16_HI", /* name */
b34976b6 161 FALSE, /* partial_inplace */
252b5132
RH		 162 0, /* src_mask */
163 0xffff, /* dst_mask */
b34976b6 164 FALSE), /* pcrel_offset */
252b5132
RH		 165
166 /* The high order 16 bits of an address, plus 1 if the contents of
8da6118f 167 the low 16 bits, treated as a signed number, is negative. */
252b5132
RH		 168 HOWTO (R_PPC_ADDR16_HA, /* type */
169 16, /* rightshift */
170 1, /* size (0 = byte, 1 = short, 2 = long) */
171 16, /* bitsize */
b34976b6 172 FALSE, /* pc_relative */
252b5132
RH		 173 0, /* bitpos */
174 complain_overflow_dont, /* complain_on_overflow */
175 ppc_elf_addr16_ha_reloc, /* special_function */
176 "R_PPC_ADDR16_HA", /* name */
b34976b6 177 FALSE, /* partial_inplace */
252b5132
RH		 178 0, /* src_mask */
179 0xffff, /* dst_mask */
b34976b6 180 FALSE), /* pcrel_offset */
252b5132
RH		 181
182 /* An absolute 16 bit branch; the lower two bits must be zero.
183 FIXME: we don't check that, we just clear them. */
184 HOWTO (R_PPC_ADDR14, /* type */
185 0, /* rightshift */
186 2, /* size (0 = byte, 1 = short, 2 = long) */
187 16, /* bitsize */
b34976b6 188 FALSE, /* pc_relative */
252b5132
RH		 189 0, /* bitpos */
190 complain_overflow_bitfield, /* complain_on_overflow */
191 bfd_elf_generic_reloc, /* special_function */
192 "R_PPC_ADDR14", /* name */
b34976b6 193 FALSE, /* partial_inplace */
252b5132
RH		 194 0, /* src_mask */
195 0xfffc, /* dst_mask */
b34976b6 196 FALSE), /* pcrel_offset */
252b5132
RH		 197
198 /* An absolute 16 bit branch, for which bit 10 should be set to
199 indicate that the branch is expected to be taken. The lower two
8da6118f 200 bits must be zero. */
252b5132
RH		 201 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
202 0, /* rightshift */
203 2, /* size (0 = byte, 1 = short, 2 = long) */
204 16, /* bitsize */
b34976b6 205 FALSE, /* pc_relative */
252b5132
RH		 206 0, /* bitpos */
207 complain_overflow_bitfield, /* complain_on_overflow */
208 bfd_elf_generic_reloc, /* special_function */
209 "R_PPC_ADDR14_BRTAKEN",/* name */
b34976b6 210 FALSE, /* partial_inplace */
252b5132
RH		 211 0, /* src_mask */
212 0xfffc, /* dst_mask */
b34976b6 213 FALSE), /* pcrel_offset */
252b5132
RH		 214
215 /* An absolute 16 bit branch, for which bit 10 should be set to
216 indicate that the branch is not expected to be taken. The lower
217 two bits must be zero. */
218 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
219 0, /* rightshift */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
221 16, /* bitsize */
b34976b6 222 FALSE, /* pc_relative */
252b5132
RH		 223 0, /* bitpos */
224 complain_overflow_bitfield, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR14_BRNTAKEN",/* name */
b34976b6 227 FALSE, /* partial_inplace */
252b5132
RH		 228 0, /* src_mask */
229 0xfffc, /* dst_mask */
b34976b6 230 FALSE), /* pcrel_offset */
252b5132 231
8da6118f 232 /* A relative 26 bit branch; the lower two bits must be zero. */
252b5132
RH		 233 HOWTO (R_PPC_REL24, /* type */
234 0, /* rightshift */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
236 26, /* bitsize */
b34976b6 237 TRUE, /* pc_relative */
252b5132
RH		 238 0, /* bitpos */
239 complain_overflow_signed, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_REL24", /* name */
b34976b6 242 FALSE, /* partial_inplace */
252b5132
RH		 243 0, /* src_mask */
244 0x3fffffc, /* dst_mask */
b34976b6 245 TRUE), /* pcrel_offset */
252b5132 246
8da6118f 247 /* A relative 16 bit branch; the lower two bits must be zero. */
252b5132
RH		 248 HOWTO (R_PPC_REL14, /* type */
249 0, /* rightshift */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
251 16, /* bitsize */
b34976b6 252 TRUE, /* pc_relative */
252b5132
RH		 253 0, /* bitpos */
254 complain_overflow_signed, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_REL14", /* name */
b34976b6 257 FALSE, /* partial_inplace */
252b5132
RH		 258 0, /* src_mask */
259 0xfffc, /* dst_mask */
b34976b6 260 TRUE), /* pcrel_offset */
252b5132 261
8da6118f 262 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 263 the branch is expected to be taken. The lower two bits must be
264 zero. */
265 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
266 0, /* rightshift */
267 2, /* size (0 = byte, 1 = short, 2 = long) */
268 16, /* bitsize */
b34976b6 269 TRUE, /* pc_relative */
252b5132
RH		 270 0, /* bitpos */
271 complain_overflow_signed, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC_REL14_BRTAKEN", /* name */
b34976b6 274 FALSE, /* partial_inplace */
252b5132
RH		 275 0, /* src_mask */
276 0xfffc, /* dst_mask */
b34976b6 277 TRUE), /* pcrel_offset */
252b5132 278
8da6118f 279 /* A relative 16 bit branch. Bit 10 should be set to indicate that
252b5132
RH		 280 the branch is not expected to be taken. The lower two bits must
281 be zero. */
282 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
283 0, /* rightshift */
284 2, /* size (0 = byte, 1 = short, 2 = long) */
285 16, /* bitsize */
b34976b6 286 TRUE, /* pc_relative */
252b5132
RH		 287 0, /* bitpos */
288 complain_overflow_signed, /* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_PPC_REL14_BRNTAKEN",/* name */
b34976b6 291 FALSE, /* partial_inplace */
252b5132
RH		 292 0, /* src_mask */
293 0xfffc, /* dst_mask */
b34976b6 294 TRUE), /* pcrel_offset */
252b5132
RH		 295
296 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
297 symbol. */
298 HOWTO (R_PPC_GOT16, /* type */
299 0, /* rightshift */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
301 16, /* bitsize */
b34976b6 302 FALSE, /* pc_relative */
252b5132
RH		 303 0, /* bitpos */
304 complain_overflow_signed, /* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_PPC_GOT16", /* name */
b34976b6 307 FALSE, /* partial_inplace */
252b5132
RH		 308 0, /* src_mask */
309 0xffff, /* dst_mask */
b34976b6 310 FALSE), /* pcrel_offset */
252b5132
RH		 311
312 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
313 the symbol. */
314 HOWTO (R_PPC_GOT16_LO, /* type */
315 0, /* rightshift */
316 1, /* size (0 = byte, 1 = short, 2 = long) */
317 16, /* bitsize */
b34976b6 318 FALSE, /* pc_relative */
252b5132
RH		 319 0, /* bitpos */
320 complain_overflow_dont, /* complain_on_overflow */
321 bfd_elf_generic_reloc, /* special_function */
322 "R_PPC_GOT16_LO", /* name */
b34976b6 323 FALSE, /* partial_inplace */
252b5132
RH		 324 0, /* src_mask */
325 0xffff, /* dst_mask */
b34976b6 326 FALSE), /* pcrel_offset */
252b5132
RH		 327
328 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
329 the symbol. */
330 HOWTO (R_PPC_GOT16_HI, /* type */
331 16, /* rightshift */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
333 16, /* bitsize */
b34976b6 334 FALSE, /* pc_relative */
252b5132
RH		 335 0, /* bitpos */
336 complain_overflow_bitfield, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_GOT16_HI", /* name */
b34976b6 339 FALSE, /* partial_inplace */
252b5132
RH		 340 0, /* src_mask */
341 0xffff, /* dst_mask */
b34976b6 342 FALSE), /* pcrel_offset */
252b5132
RH		 343
344 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
345 the symbol. */
346 HOWTO (R_PPC_GOT16_HA, /* type */
347 16, /* rightshift */
348 1, /* size (0 = byte, 1 = short, 2 = long) */
349 16, /* bitsize */
b34976b6 350 FALSE, /* pc_relative */
252b5132
RH		 351 0, /* bitpos */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc_elf_addr16_ha_reloc, /* special_function */
354 "R_PPC_GOT16_HA", /* name */
b34976b6 355 FALSE, /* partial_inplace */
252b5132
RH		 356 0, /* src_mask */
357 0xffff, /* dst_mask */
b34976b6 358 FALSE), /* pcrel_offset */
252b5132
RH		 359
360 /* Like R_PPC_REL24, but referring to the procedure linkage table
361 entry for the symbol. */
362 HOWTO (R_PPC_PLTREL24, /* type */
363 0, /* rightshift */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
365 26, /* bitsize */
b34976b6 366 TRUE, /* pc_relative */
252b5132
RH		 367 0, /* bitpos */
368 complain_overflow_signed, /* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_PPC_PLTREL24", /* name */
b34976b6 371 FALSE, /* partial_inplace */
252b5132
RH		 372 0, /* src_mask */
373 0x3fffffc, /* dst_mask */
b34976b6 374 TRUE), /* pcrel_offset */
252b5132
RH		 375
376 /* This is used only by the dynamic linker. The symbol should exist
377 both in the object being run and in some shared library. The
378 dynamic linker copies the data addressed by the symbol from the
379 shared library into the object, because the object being
380 run has to have the data at some particular address. */
381 HOWTO (R_PPC_COPY, /* type */
382 0, /* rightshift */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
384 32, /* bitsize */
b34976b6 385 FALSE, /* pc_relative */
252b5132
RH		 386 0, /* bitpos */
387 complain_overflow_bitfield, /* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_PPC_COPY", /* name */
b34976b6 390 FALSE, /* partial_inplace */
252b5132
RH		 391 0, /* src_mask */
392 0, /* dst_mask */
b34976b6 393 FALSE), /* pcrel_offset */
252b5132
RH		 394
395 /* Like R_PPC_ADDR32, but used when setting global offset table
396 entries. */
397 HOWTO (R_PPC_GLOB_DAT, /* type */
398 0, /* rightshift */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
400 32, /* bitsize */
b34976b6 401 FALSE, /* pc_relative */
252b5132
RH		 402 0, /* bitpos */
403 complain_overflow_bitfield, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
405 "R_PPC_GLOB_DAT", /* name */
b34976b6 406 FALSE, /* partial_inplace */
252b5132
RH		 407 0, /* src_mask */
408 0xffffffff, /* dst_mask */
b34976b6 409 FALSE), /* pcrel_offset */
252b5132
RH		 410
411 /* Marks a procedure linkage table entry for a symbol. */
412 HOWTO (R_PPC_JMP_SLOT, /* type */
413 0, /* rightshift */
414 2, /* size (0 = byte, 1 = short, 2 = long) */
415 32, /* bitsize */
b34976b6 416 FALSE, /* pc_relative */
252b5132
RH		 417 0, /* bitpos */
418 complain_overflow_bitfield, /* complain_on_overflow */
419 bfd_elf_generic_reloc, /* special_function */
420 "R_PPC_JMP_SLOT", /* name */
b34976b6 421 FALSE, /* partial_inplace */
252b5132
RH		 422 0, /* src_mask */
423 0, /* dst_mask */
b34976b6 424 FALSE), /* pcrel_offset */
252b5132
RH		 425
426 /* Used only by the dynamic linker. When the object is run, this
427 longword is set to the load address of the object, plus the
428 addend. */
429 HOWTO (R_PPC_RELATIVE, /* type */
430 0, /* rightshift */
431 2, /* size (0 = byte, 1 = short, 2 = long) */
432 32, /* bitsize */
b34976b6 433 FALSE, /* pc_relative */
252b5132
RH		 434 0, /* bitpos */
435 complain_overflow_bitfield, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_PPC_RELATIVE", /* name */
b34976b6 438 FALSE, /* partial_inplace */
252b5132
RH		 439 0, /* src_mask */
440 0xffffffff, /* dst_mask */
b34976b6 441 FALSE), /* pcrel_offset */
252b5132
RH		 442
443 /* Like R_PPC_REL24, but uses the value of the symbol within the
444 object rather than the final value. Normally used for
445 _GLOBAL_OFFSET_TABLE_. */
446 HOWTO (R_PPC_LOCAL24PC, /* type */
447 0, /* rightshift */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
449 26, /* bitsize */
b34976b6 450 TRUE, /* pc_relative */
252b5132
RH		 451 0, /* bitpos */
452 complain_overflow_signed, /* complain_on_overflow */
453 bfd_elf_generic_reloc, /* special_function */
454 "R_PPC_LOCAL24PC", /* name */
b34976b6 455 FALSE, /* partial_inplace */
252b5132
RH		 456 0, /* src_mask */
457 0x3fffffc, /* dst_mask */
b34976b6 458 TRUE), /* pcrel_offset */
252b5132
RH		 459
460 /* Like R_PPC_ADDR32, but may be unaligned. */
461 HOWTO (R_PPC_UADDR32, /* type */
462 0, /* rightshift */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
464 32, /* bitsize */
b34976b6 465 FALSE, /* pc_relative */
252b5132
RH		 466 0, /* bitpos */
467 complain_overflow_bitfield, /* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_PPC_UADDR32", /* name */
b34976b6 470 FALSE, /* partial_inplace */
252b5132
RH		 471 0, /* src_mask */
472 0xffffffff, /* dst_mask */
b34976b6 473 FALSE), /* pcrel_offset */
252b5132
RH		 474
475 /* Like R_PPC_ADDR16, but may be unaligned. */
476 HOWTO (R_PPC_UADDR16, /* type */
477 0, /* rightshift */
478 1, /* size (0 = byte, 1 = short, 2 = long) */
479 16, /* bitsize */
b34976b6 480 FALSE, /* pc_relative */
252b5132
RH		 481 0, /* bitpos */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_UADDR16", /* name */
b34976b6 485 FALSE, /* partial_inplace */
252b5132
RH		 486 0, /* src_mask */
487 0xffff, /* dst_mask */
b34976b6 488 FALSE), /* pcrel_offset */
252b5132
RH		 489
490 /* 32-bit PC relative */
491 HOWTO (R_PPC_REL32, /* type */
492 0, /* rightshift */
493 2, /* size (0 = byte, 1 = short, 2 = long) */
494 32, /* bitsize */
b34976b6 495 TRUE, /* pc_relative */
252b5132
RH		 496 0, /* bitpos */
497 complain_overflow_bitfield, /* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
499 "R_PPC_REL32", /* name */
b34976b6 500 FALSE, /* partial_inplace */
252b5132
RH		 501 0, /* src_mask */
502 0xffffffff, /* dst_mask */
b34976b6 503 TRUE), /* pcrel_offset */
252b5132
RH		 504
505 /* 32-bit relocation to the symbol's procedure linkage table.
c3668558 506 FIXME: not supported. */
252b5132
RH		 507 HOWTO (R_PPC_PLT32, /* type */
508 0, /* rightshift */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
510 32, /* bitsize */
b34976b6 511 FALSE, /* pc_relative */
252b5132
RH		 512 0, /* bitpos */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_PLT32", /* name */
b34976b6 516 FALSE, /* partial_inplace */
252b5132
RH		 517 0, /* src_mask */
518 0, /* dst_mask */
b34976b6 519 FALSE), /* pcrel_offset */
252b5132
RH		 520
521 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
c3668558 522 FIXME: not supported. */
252b5132
RH		 523 HOWTO (R_PPC_PLTREL32, /* type */
524 0, /* rightshift */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
526 32, /* bitsize */
b34976b6 527 TRUE, /* pc_relative */
252b5132
RH		 528 0, /* bitpos */
529 complain_overflow_bitfield, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC_PLTREL32", /* name */
b34976b6 532 FALSE, /* partial_inplace */
252b5132
RH		 533 0, /* src_mask */
534 0, /* dst_mask */
b34976b6 535 TRUE), /* pcrel_offset */
252b5132
RH		 536
537 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
538 the symbol. */
539 HOWTO (R_PPC_PLT16_LO, /* type */
540 0, /* rightshift */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
542 16, /* bitsize */
b34976b6 543 FALSE, /* pc_relative */
252b5132
RH		 544 0, /* bitpos */
545 complain_overflow_dont, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_PPC_PLT16_LO", /* name */
b34976b6 548 FALSE, /* partial_inplace */
252b5132
RH		 549 0, /* src_mask */
550 0xffff, /* dst_mask */
b34976b6 551 FALSE), /* pcrel_offset */
252b5132
RH		 552
553 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
554 the symbol. */
555 HOWTO (R_PPC_PLT16_HI, /* type */
556 16, /* rightshift */
557 1, /* size (0 = byte, 1 = short, 2 = long) */
558 16, /* bitsize */
b34976b6 559 FALSE, /* pc_relative */
252b5132
RH		 560 0, /* bitpos */
561 complain_overflow_bitfield, /* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_PPC_PLT16_HI", /* name */
b34976b6 564 FALSE, /* partial_inplace */
252b5132
RH		 565 0, /* src_mask */
566 0xffff, /* dst_mask */
b34976b6 567 FALSE), /* pcrel_offset */
252b5132
RH		 568
569 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
570 the symbol. */
571 HOWTO (R_PPC_PLT16_HA, /* type */
572 16, /* rightshift */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
574 16, /* bitsize */
b34976b6 575 FALSE, /* pc_relative */
252b5132
RH		 576 0, /* bitpos */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 ppc_elf_addr16_ha_reloc, /* special_function */
579 "R_PPC_PLT16_HA", /* name */
b34976b6 580 FALSE, /* partial_inplace */
252b5132
RH		 581 0, /* src_mask */
582 0xffff, /* dst_mask */
b34976b6 583 FALSE), /* pcrel_offset */
252b5132
RH		 584
585 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
586 small data items. */
587 HOWTO (R_PPC_SDAREL16, /* type */
588 0, /* rightshift */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
590 16, /* bitsize */
b34976b6 591 FALSE, /* pc_relative */
252b5132
RH		 592 0, /* bitpos */
593 complain_overflow_signed, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_SDAREL16", /* name */
b34976b6 596 FALSE, /* partial_inplace */
252b5132
RH		 597 0, /* src_mask */
598 0xffff, /* dst_mask */
b34976b6 599 FALSE), /* pcrel_offset */
252b5132 600
c061c2d8 601 /* 16-bit section relative relocation. */
252b5132
RH		 602 HOWTO (R_PPC_SECTOFF, /* type */
603 0, /* rightshift */
c061c2d8
AM		 604 1, /* size (0 = byte, 1 = short, 2 = long) */
605 16, /* bitsize */
b34976b6 606 FALSE, /* pc_relative */
252b5132
RH		 607 0, /* bitpos */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_SECTOFF", /* name */
b34976b6 611 FALSE, /* partial_inplace */
252b5132 612 0, /* src_mask */
c061c2d8 613 0xffff, /* dst_mask */
b34976b6 614 FALSE), /* pcrel_offset */
252b5132 615
c3668558 616 /* 16-bit lower half section relative relocation. */
252b5132
RH		 617 HOWTO (R_PPC_SECTOFF_LO, /* type */
618 0, /* rightshift */
619 1, /* size (0 = byte, 1 = short, 2 = long) */
620 16, /* bitsize */
b34976b6 621 FALSE, /* pc_relative */
252b5132
RH		 622 0, /* bitpos */
623 complain_overflow_dont, /* complain_on_overflow */
624 bfd_elf_generic_reloc, /* special_function */
625 "R_PPC_SECTOFF_LO", /* name */
b34976b6 626 FALSE, /* partial_inplace */
252b5132
RH		 627 0, /* src_mask */
628 0xffff, /* dst_mask */
b34976b6 629 FALSE), /* pcrel_offset */
252b5132 630
c3668558 631 /* 16-bit upper half section relative relocation. */
252b5132
RH		 632 HOWTO (R_PPC_SECTOFF_HI, /* type */
633 16, /* rightshift */
634 1, /* size (0 = byte, 1 = short, 2 = long) */
635 16, /* bitsize */
b34976b6 636 FALSE, /* pc_relative */
252b5132
RH		 637 0, /* bitpos */
638 complain_overflow_bitfield, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC_SECTOFF_HI", /* name */
b34976b6 641 FALSE, /* partial_inplace */
252b5132
RH		 642 0, /* src_mask */
643 0xffff, /* dst_mask */
b34976b6 644 FALSE), /* pcrel_offset */
252b5132 645
c3668558 646 /* 16-bit upper half adjusted section relative relocation. */
252b5132
RH		 647 HOWTO (R_PPC_SECTOFF_HA, /* type */
648 16, /* rightshift */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
650 16, /* bitsize */
b34976b6 651 FALSE, /* pc_relative */
252b5132
RH		 652 0, /* bitpos */
653 complain_overflow_bitfield, /* complain_on_overflow */
654 ppc_elf_addr16_ha_reloc, /* special_function */
655 "R_PPC_SECTOFF_HA", /* name */
b34976b6 656 FALSE, /* partial_inplace */
252b5132
RH		 657 0, /* src_mask */
658 0xffff, /* dst_mask */
b34976b6 659 FALSE), /* pcrel_offset */
252b5132 660
7619e7c7
AM		 661 /* Marker reloc for TLS. */
662 HOWTO (R_PPC_TLS,
252b5132
RH		 663 0, /* rightshift */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
665 32, /* bitsize */
b34976b6 666 FALSE, /* pc_relative */
252b5132 667 0, /* bitpos */
7619e7c7 668 complain_overflow_dont, /* complain_on_overflow */
252b5132 669 bfd_elf_generic_reloc, /* special_function */
7619e7c7
AM		 670 "R_PPC_TLS", /* name */
671 FALSE, /* partial_inplace */
672 0, /* src_mask */
673 0, /* dst_mask */
674 FALSE), /* pcrel_offset */
675
676 /* Computes the load module index of the load module that contains the
677 definition of its TLS sym. */
678 HOWTO (R_PPC_DTPMOD32,
679 0, /* rightshift */
680 2, /* size (0 = byte, 1 = short, 2 = long) */
681 32, /* bitsize */
682 FALSE, /* pc_relative */
683 0, /* bitpos */
684 complain_overflow_dont, /* complain_on_overflow */
685 ppc_elf_unhandled_reloc, /* special_function */
686 "R_PPC_DTPMOD32", /* name */
b34976b6 687 FALSE, /* partial_inplace */
252b5132
RH		 688 0, /* src_mask */
689 0xffffffff, /* dst_mask */
b34976b6 690 FALSE), /* pcrel_offset */
252b5132 691
7619e7c7
AM		 692 /* Computes a dtv-relative displacement, the difference between the value
693 of sym+add and the base address of the thread-local storage block that
694 contains the definition of sym, minus 0x8000. */
695 HOWTO (R_PPC_DTPREL32,
696 0, /* rightshift */
697 2, /* size (0 = byte, 1 = short, 2 = long) */
698 32, /* bitsize */
699 FALSE, /* pc_relative */
700 0, /* bitpos */
701 complain_overflow_dont, /* complain_on_overflow */
702 ppc_elf_unhandled_reloc, /* special_function */
703 "R_PPC_DTPREL32", /* name */
704 FALSE, /* partial_inplace */
705 0, /* src_mask */
706 0xffffffff, /* dst_mask */
707 FALSE), /* pcrel_offset */
708
709 /* A 16 bit dtprel reloc. */
710 HOWTO (R_PPC_DTPREL16,
252b5132
RH		 711 0, /* rightshift */
712 1, /* size (0 = byte, 1 = short, 2 = long) */
713 16, /* bitsize */
b34976b6 714 FALSE, /* pc_relative */
252b5132 715 0, /* bitpos */
7619e7c7
AM		 716 complain_overflow_signed, /* complain_on_overflow */
717 ppc_elf_unhandled_reloc, /* special_function */
718 "R_PPC_DTPREL16", /* name */
b34976b6 719 FALSE, /* partial_inplace */
252b5132
RH		 720 0, /* src_mask */
721 0xffff, /* dst_mask */
b34976b6 722 FALSE), /* pcrel_offset */
252b5132 723
7619e7c7
AM		 724 /* Like DTPREL16, but no overflow. */
725 HOWTO (R_PPC_DTPREL16_LO,
252b5132
RH		 726 0, /* rightshift */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
728 16, /* bitsize */
b34976b6 729 FALSE, /* pc_relative */
252b5132 730 0, /* bitpos */
7619e7c7
AM		 731 complain_overflow_dont, /* complain_on_overflow */
732 ppc_elf_unhandled_reloc, /* special_function */
733 "R_PPC_DTPREL16_LO", /* name */
b34976b6 734 FALSE, /* partial_inplace */
252b5132
RH		 735 0, /* src_mask */
736 0xffff, /* dst_mask */
b34976b6 737 FALSE), /* pcrel_offset */
252b5132 738
7619e7c7
AM		 739 /* Like DTPREL16_LO, but next higher group of 16 bits. */
740 HOWTO (R_PPC_DTPREL16_HI,
252b5132
RH		 741 16, /* rightshift */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
743 16, /* bitsize */
b34976b6 744 FALSE, /* pc_relative */
252b5132
RH		 745 0, /* bitpos */
746 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 747 ppc_elf_unhandled_reloc, /* special_function */
748 "R_PPC_DTPREL16_HI", /* name */
b34976b6 749 FALSE, /* partial_inplace */
252b5132
RH		 750 0, /* src_mask */
751 0xffff, /* dst_mask */
b34976b6 752 FALSE), /* pcrel_offset */
252b5132 753
7619e7c7
AM		 754 /* Like DTPREL16_HI, but adjust for low 16 bits. */
755 HOWTO (R_PPC_DTPREL16_HA,
252b5132
RH		 756 16, /* rightshift */
757 1, /* size (0 = byte, 1 = short, 2 = long) */
758 16, /* bitsize */
b34976b6 759 FALSE, /* pc_relative */
252b5132
RH		 760 0, /* bitpos */
761 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 762 ppc_elf_unhandled_reloc, /* special_function */
763 "R_PPC_DTPREL16_HA", /* name */
b34976b6 764 FALSE, /* partial_inplace */
252b5132
RH		 765 0, /* src_mask */
766 0xffff, /* dst_mask */
b34976b6 767 FALSE), /* pcrel_offset */
252b5132 768
7619e7c7
AM		 769 /* Computes a tp-relative displacement, the difference between the value of
770 sym+add and the value of the thread pointer (r13). */
771 HOWTO (R_PPC_TPREL32,
772 0, /* rightshift */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
774 32, /* bitsize */
775 FALSE, /* pc_relative */
776 0, /* bitpos */
777 complain_overflow_dont, /* complain_on_overflow */
778 ppc_elf_unhandled_reloc, /* special_function */
779 "R_PPC_TPREL32", /* name */
780 FALSE, /* partial_inplace */
781 0, /* src_mask */
782 0xffffffff, /* dst_mask */
783 FALSE), /* pcrel_offset */
784
785 /* A 16 bit tprel reloc. */
786 HOWTO (R_PPC_TPREL16,
252b5132
RH		 787 0, /* rightshift */
788 1, /* size (0 = byte, 1 = short, 2 = long) */
789 16, /* bitsize */
b34976b6 790 FALSE, /* pc_relative */
252b5132 791 0, /* bitpos */
7619e7c7
AM		 792 complain_overflow_signed, /* complain_on_overflow */
793 ppc_elf_unhandled_reloc, /* special_function */
794 "R_PPC_TPREL16", /* name */
b34976b6 795 FALSE, /* partial_inplace */
252b5132
RH		 796 0, /* src_mask */
797 0xffff, /* dst_mask */
b34976b6 798 FALSE), /* pcrel_offset */
252b5132 799
7619e7c7
AM		 800 /* Like TPREL16, but no overflow. */
801 HOWTO (R_PPC_TPREL16_LO,
252b5132
RH		 802 0, /* rightshift */
803 1, /* size (0 = byte, 1 = short, 2 = long) */
804 16, /* bitsize */
b34976b6 805 FALSE, /* pc_relative */
252b5132 806 0, /* bitpos */
7619e7c7
AM		 807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_TPREL16_LO", /* name */
b34976b6 810 FALSE, /* partial_inplace */
252b5132
RH		 811 0, /* src_mask */
812 0xffff, /* dst_mask */
b34976b6 813 FALSE), /* pcrel_offset */
252b5132 814
7619e7c7
AM		 815 /* Like TPREL16_LO, but next higher group of 16 bits. */
816 HOWTO (R_PPC_TPREL16_HI,
817 16, /* rightshift */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
819 16, /* bitsize */
820 FALSE, /* pc_relative */
821 0, /* bitpos */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc_elf_unhandled_reloc, /* special_function */
824 "R_PPC_TPREL16_HI", /* name */
825 FALSE, /* partial_inplace */
826 0, /* src_mask */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
829
830 /* Like TPREL16_HI, but adjust for low 16 bits. */
831 HOWTO (R_PPC_TPREL16_HA,
832 16, /* rightshift */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
834 16, /* bitsize */
835 FALSE, /* pc_relative */
836 0, /* bitpos */
837 complain_overflow_dont, /* complain_on_overflow */
838 ppc_elf_unhandled_reloc, /* special_function */
839 "R_PPC_TPREL16_HA", /* name */
840 FALSE, /* partial_inplace */
841 0, /* src_mask */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
844
845 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
846 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
847 to the first entry. */
848 HOWTO (R_PPC_GOT_TLSGD16,
252b5132
RH		 849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
b34976b6 852 FALSE, /* pc_relative */
252b5132
RH		 853 0, /* bitpos */
854 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_GOT_TLSGD16", /* name */
b34976b6 857 FALSE, /* partial_inplace */
252b5132
RH		 858 0, /* src_mask */
859 0xffff, /* dst_mask */
b34976b6 860 FALSE), /* pcrel_offset */
252b5132 861
7619e7c7
AM		 862 /* Like GOT_TLSGD16, but no overflow. */
863 HOWTO (R_PPC_GOT_TLSGD16_LO,
252b5132 864 0, /* rightshift */
7619e7c7 865 1, /* size (0 = byte, 1 = short, 2 = long) */
252b5132 866 16, /* bitsize */
b34976b6 867 FALSE, /* pc_relative */
252b5132 868 0, /* bitpos */
7619e7c7
AM		 869 complain_overflow_dont, /* complain_on_overflow */
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_GOT_TLSGD16_LO", /* name */
b34976b6 872 FALSE, /* partial_inplace */
252b5132
RH		 873 0, /* src_mask */
874 0xffff, /* dst_mask */
b34976b6 875 FALSE), /* pcrel_offset */
252b5132 876
7619e7c7
AM		 877 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
878 HOWTO (R_PPC_GOT_TLSGD16_HI,
879 16, /* rightshift */
880 1, /* size (0 = byte, 1 = short, 2 = long) */
881 16, /* bitsize */
882 FALSE, /* pc_relative */
883 0, /* bitpos */
884 complain_overflow_dont, /* complain_on_overflow */
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_GOT_TLSGD16_HI", /* name */
887 FALSE, /* partial_inplace */
888 0, /* src_mask */
889 0xffff, /* dst_mask */
890 FALSE), /* pcrel_offset */
252b5132 891
7619e7c7
AM		 892 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
893 HOWTO (R_PPC_GOT_TLSGD16_HA,
894 16, /* rightshift */
895 1, /* size (0 = byte, 1 = short, 2 = long) */
896 16, /* bitsize */
897 FALSE, /* pc_relative */
898 0, /* bitpos */
899 complain_overflow_dont, /* complain_on_overflow */
900 ppc_elf_unhandled_reloc, /* special_function */
901 "R_PPC_GOT_TLSGD16_HA", /* name */
902 FALSE, /* partial_inplace */
903 0, /* src_mask */
904 0xffff, /* dst_mask */
905 FALSE), /* pcrel_offset */
906
907 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
908 with values (sym+add)@dtpmod and zero, and computes the offset to the
909 first entry. */
910 HOWTO (R_PPC_GOT_TLSLD16,
252b5132
RH		 911 0, /* rightshift */
912 1, /* size (0 = byte, 1 = short, 2 = long) */
913 16, /* bitsize */
7619e7c7 914 FALSE, /* pc_relative */
252b5132
RH		 915 0, /* bitpos */
916 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_GOT_TLSLD16", /* name */
b34976b6 919 FALSE, /* partial_inplace */
252b5132
RH		 920 0, /* src_mask */
921 0xffff, /* dst_mask */
b34976b6 922 FALSE), /* pcrel_offset */
252b5132 923
7619e7c7
AM		 924 /* Like GOT_TLSLD16, but no overflow. */
925 HOWTO (R_PPC_GOT_TLSLD16_LO,
252b5132 926 0, /* rightshift */
7619e7c7
AM		 927 1, /* size (0 = byte, 1 = short, 2 = long) */
928 16, /* bitsize */
b34976b6 929 FALSE, /* pc_relative */
252b5132
RH		 930 0, /* bitpos */
931 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_GOT_TLSLD16_LO", /* name */
b34976b6 934 FALSE, /* partial_inplace */
252b5132 935 0, /* src_mask */
7619e7c7 936 0xffff, /* dst_mask */
b34976b6 937 FALSE), /* pcrel_offset */
252b5132 938
7619e7c7
AM		 939 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
940 HOWTO (R_PPC_GOT_TLSLD16_HI,
941 16, /* rightshift */
942 1, /* size (0 = byte, 1 = short, 2 = long) */
943 16, /* bitsize */
b34976b6 944 FALSE, /* pc_relative */
252b5132
RH		 945 0, /* bitpos */
946 complain_overflow_dont, /* complain_on_overflow */
7619e7c7
AM		 947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_GOT_TLSLD16_HI", /* name */
b34976b6 949 FALSE, /* partial_inplace */
252b5132 950 0, /* src_mask */
7619e7c7 951 0xffff, /* dst_mask */
b34976b6 952 FALSE), /* pcrel_offset */
252b5132 953
7619e7c7
AM		 954 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
955 HOWTO (R_PPC_GOT_TLSLD16_HA,
956 16, /* rightshift */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
958 16, /* bitsize */
959 FALSE, /* pc_relative */
960 0, /* bitpos */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_GOT_TLSLD16_HA", /* name */
964 FALSE, /* partial_inplace */
965 0, /* src_mask */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
968
969 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
970 the offset to the entry. */
971 HOWTO (R_PPC_GOT_DTPREL16,
252b5132
RH		 972 0, /* rightshift */
973 1, /* size (0 = byte, 1 = short, 2 = long) */
974 16, /* bitsize */
b34976b6 975 FALSE, /* pc_relative */
252b5132
RH		 976 0, /* bitpos */
977 complain_overflow_signed, /* complain_on_overflow */
7619e7c7
AM		 978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_DTPREL16", /* name */
b34976b6 980 FALSE, /* partial_inplace */
252b5132
RH		 981 0, /* src_mask */
982 0xffff, /* dst_mask */
b34976b6 983 FALSE), /* pcrel_offset */
252b5132 984
7619e7c7
AM		 985 /* Like GOT_DTPREL16, but no overflow. */
986 HOWTO (R_PPC_GOT_DTPREL16_LO,
987 0, /* rightshift */
988 1, /* size (0 = byte, 1 = short, 2 = long) */
989 16, /* bitsize */
990 FALSE, /* pc_relative */
991 0, /* bitpos */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_DTPREL16_LO", /* name */
995 FALSE, /* partial_inplace */
996 0, /* src_mask */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
252b5132 999
7619e7c7
AM		 1000 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_DTPREL16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1004 16, /* bitsize */
1005 FALSE, /* pc_relative */
1006 0, /* bitpos */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_DTPREL16_HI", /* name */
1010 FALSE, /* partial_inplace */
1011 0, /* src_mask */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
252b5132 1014
7619e7c7
AM		 1015 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_DTPREL16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1019 16, /* bitsize */
1020 FALSE, /* pc_relative */
1021 0, /* bitpos */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_DTPREL16_HA", /* name */
1025 FALSE, /* partial_inplace */
1026 0, /* src_mask */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
c3668558 1029
7619e7c7
AM		 1030 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1031 offset to the entry. */
1032 HOWTO (R_PPC_GOT_TPREL16,
1033 0, /* rightshift */
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1035 16, /* bitsize */
1036 FALSE, /* pc_relative */
1037 0, /* bitpos */
1038 complain_overflow_signed, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TPREL16", /* name */
1041 FALSE, /* partial_inplace */
1042 0, /* src_mask */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1045
1046 /* Like GOT_TPREL16, but no overflow. */
1047 HOWTO (R_PPC_GOT_TPREL16_LO,
1048 0, /* rightshift */
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1050 16, /* bitsize */
1051 FALSE, /* pc_relative */
1052 0, /* bitpos */
1053 complain_overflow_dont, /* complain_on_overflow */
1054 ppc_elf_unhandled_reloc, /* special_function */
1055 "R_PPC_GOT_TPREL16_LO", /* name */
1056 FALSE, /* partial_inplace */
1057 0, /* src_mask */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1060
1061 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1062 HOWTO (R_PPC_GOT_TPREL16_HI,
1063 16, /* rightshift */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1065 16, /* bitsize */
1066 FALSE, /* pc_relative */
1067 0, /* bitpos */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 ppc_elf_unhandled_reloc, /* special_function */
1070 "R_PPC_GOT_TPREL16_HI", /* name */
1071 FALSE, /* partial_inplace */
1072 0, /* src_mask */
1073 0xffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1075
1076 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1077 HOWTO (R_PPC_GOT_TPREL16_HA,
1078 16, /* rightshift */
1079 1, /* size (0 = byte, 1 = short, 2 = long) */
1080 16, /* bitsize */
1081 FALSE, /* pc_relative */
1082 0, /* bitpos */
1083 complain_overflow_dont, /* complain_on_overflow */
1084 ppc_elf_unhandled_reloc, /* special_function */
1085 "R_PPC_GOT_TPREL16_HA", /* name */
1086 FALSE, /* partial_inplace */
1087 0, /* src_mask */
1088 0xffff, /* dst_mask */
1089 FALSE), /* pcrel_offset */
1090
1091 /* The remaining relocs are from the Embedded ELF ABI, and are not
1092 in the SVR4 ELF ABI. */
1093
1094 /* 32 bit value resulting from the addend minus the symbol. */
1095 HOWTO (R_PPC_EMB_NADDR32, /* type */
1096 0, /* rightshift */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1098 32, /* bitsize */
1099 FALSE, /* pc_relative */
1100 0, /* bitpos */
1101 complain_overflow_bitfield, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_PPC_EMB_NADDR32", /* name */
1104 FALSE, /* partial_inplace */
1105 0, /* src_mask */
1106 0xffffffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1108
1109 /* 16 bit value resulting from the addend minus the symbol. */
1110 HOWTO (R_PPC_EMB_NADDR16, /* type */
1111 0, /* rightshift */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1113 16, /* bitsize */
1114 FALSE, /* pc_relative */
1115 0, /* bitpos */
1116 complain_overflow_bitfield, /* complain_on_overflow */
1117 bfd_elf_generic_reloc, /* special_function */
1118 "R_PPC_EMB_NADDR16", /* name */
1119 FALSE, /* partial_inplace */
1120 0, /* src_mask */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1123
1124 /* 16 bit value resulting from the addend minus the symbol. */
1125 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1126 0, /* rightshift */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 16, /* bitsize */
1129 FALSE, /* pc_relative */
1130 0, /* bitpos */
1131 complain_overflow_dont,/* complain_on_overflow */
1132 bfd_elf_generic_reloc, /* special_function */
1133 "R_PPC_EMB_ADDR16_LO", /* name */
1134 FALSE, /* partial_inplace */
1135 0, /* src_mask */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1138
1139 /* The high order 16 bits of the addend minus the symbol. */
1140 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1143 16, /* bitsize */
1144 FALSE, /* pc_relative */
1145 0, /* bitpos */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_PPC_EMB_NADDR16_HI", /* name */
1149 FALSE, /* partial_inplace */
1150 0, /* src_mask */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1153
1154 /* The high order 16 bits of the result of the addend minus the address,
1155 plus 1 if the contents of the low 16 bits, treated as a signed number,
1156 is negative. */
1157 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 16, /* bitsize */
1161 FALSE, /* pc_relative */
1162 0, /* bitpos */
1163 complain_overflow_dont, /* complain_on_overflow */
25dbc73a
AM		 1164 ppc_elf_addr16_ha_reloc, /* special_function */
1165 "R_PPC_EMB_NADDR16_HA", /* name */
1166 FALSE, /* partial_inplace */
1167 0, /* src_mask */
1168 0xffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1170
1171 /* 16 bit value resulting from allocating a 4 byte word to hold an
1172 address in the .sdata section, and returning the offset from
1173 _SDA_BASE_ for that relocation. */
1174 HOWTO (R_PPC_EMB_SDAI16, /* type */
1175 0, /* rightshift */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1177 16, /* bitsize */
1178 FALSE, /* pc_relative */
1179 0, /* bitpos */
1180 complain_overflow_bitfield, /* complain_on_overflow */
1181 bfd_elf_generic_reloc, /* special_function */
1182 "R_PPC_EMB_SDAI16", /* name */
1183 FALSE, /* partial_inplace */
1184 0, /* src_mask */
1185 0xffff, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1187
1188 /* 16 bit value resulting from allocating a 4 byte word to hold an
1189 address in the .sdata2 section, and returning the offset from
1190 _SDA2_BASE_ for that relocation. */
1191 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1192 0, /* rightshift */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1194 16, /* bitsize */
1195 FALSE, /* pc_relative */
1196 0, /* bitpos */
1197 complain_overflow_bitfield, /* complain_on_overflow */
1198 bfd_elf_generic_reloc, /* special_function */
1199 "R_PPC_EMB_SDA2I16", /* name */
1200 FALSE, /* partial_inplace */
1201 0, /* src_mask */
1202 0xffff, /* dst_mask */
1203 FALSE), /* pcrel_offset */
1204
1205 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1206 small data items. */
1207 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1208 0, /* rightshift */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1210 16, /* bitsize */
1211 FALSE, /* pc_relative */
1212 0, /* bitpos */
1213 complain_overflow_signed, /* complain_on_overflow */
1214 bfd_elf_generic_reloc, /* special_function */
1215 "R_PPC_EMB_SDA2REL", /* name */
1216 FALSE, /* partial_inplace */
1217 0, /* src_mask */
1218 0xffff, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1220
1221 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1222 signed offset from the appropriate base, and filling in the register
1223 field with the appropriate register (0, 2, or 13). */
1224 HOWTO (R_PPC_EMB_SDA21, /* type */
1225 0, /* rightshift */
1226 2, /* size (0 = byte, 1 = short, 2 = long) */
1227 16, /* bitsize */
1228 FALSE, /* pc_relative */
1229 0, /* bitpos */
1230 complain_overflow_signed, /* complain_on_overflow */
1231 bfd_elf_generic_reloc, /* special_function */
1232 "R_PPC_EMB_SDA21", /* name */
1233 FALSE, /* partial_inplace */
1234 0, /* src_mask */
1235 0xffff, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1237
1238 /* Relocation not handled: R_PPC_EMB_MRKREF */
1239 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1240 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1241 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1242 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1243 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1244
1245 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1246 in the 16 bit signed offset from the appropriate base, and filling in the
1247 register field with the appropriate register (0, 2, or 13). */
1248 HOWTO (R_PPC_EMB_RELSDA, /* type */
1249 0, /* rightshift */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1251 16, /* bitsize */
1252 TRUE, /* pc_relative */
1253 0, /* bitpos */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_RELSDA", /* name */
1257 FALSE, /* partial_inplace */
1258 0, /* src_mask */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1261
1262 /* GNU extension to record C++ vtable hierarchy. */
1263 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1264 0, /* rightshift */
1265 0, /* size (0 = byte, 1 = short, 2 = long) */
1266 0, /* bitsize */
1267 FALSE, /* pc_relative */
1268 0, /* bitpos */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 NULL, /* special_function */
1271 "R_PPC_GNU_VTINHERIT", /* name */
1272 FALSE, /* partial_inplace */
1273 0, /* src_mask */
1274 0, /* dst_mask */
1275 FALSE), /* pcrel_offset */
1276
1277 /* GNU extension to record C++ vtable member usage. */
1278 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1279 0, /* rightshift */
1280 0, /* size (0 = byte, 1 = short, 2 = long) */
1281 0, /* bitsize */
1282 FALSE, /* pc_relative */
1283 0, /* bitpos */
1284 complain_overflow_dont, /* complain_on_overflow */
1285 NULL, /* special_function */
1286 "R_PPC_GNU_VTENTRY", /* name */
7619e7c7
AM		 1287 FALSE, /* partial_inplace */
1288 0, /* src_mask */
25dbc73a 1289 0, /* dst_mask */
7619e7c7
AM		 1290 FALSE), /* pcrel_offset */
1291
25dbc73a
AM		 1292 /* Phony reloc to handle AIX style TOC entries. */
1293 HOWTO (R_PPC_TOC16, /* type */
7619e7c7
AM		 1294 0, /* rightshift */
1295 1, /* size (0 = byte, 1 = short, 2 = long) */
1296 16, /* bitsize */
1297 FALSE, /* pc_relative */
1298 0, /* bitpos */
25dbc73a 1299 complain_overflow_signed, /* complain_on_overflow */
7619e7c7 1300 bfd_elf_generic_reloc, /* special_function */
25dbc73a 1301 "R_PPC_TOC16", /* name */
7619e7c7
AM		 1302 FALSE, /* partial_inplace */
1303 0, /* src_mask */
1304 0xffff, /* dst_mask */
1305 FALSE), /* pcrel_offset */
25dbc73a
AM		 1306};
1307\f
1308/* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1309
1310static void
1311ppc_elf_howto_init (void)
1312{
1313 unsigned int i, type;
1314
1315 for (i = 0;
1316 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1317 i++)
1318 {
1319 type = ppc_elf_howto_raw[i].type;
1320 if (type >= (sizeof (ppc_elf_howto_table)
1321 / sizeof (ppc_elf_howto_table[0])))
1322 abort ();
1323 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1324 }
1325}
1326
1327static reloc_howto_type *
1328ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1329 bfd_reloc_code_real_type code)
1330{
1331 enum elf_ppc_reloc_type r;
1332
1333 /* Initialize howto table if not already done. */
1334 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1335 ppc_elf_howto_init ();
1336
1337 switch (code)
1338 {
1339 default:
1340 return NULL;
1341
1342 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1343 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1344 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1345 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1346 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1347 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1348 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1349 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1350 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1351 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1352 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1353 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1354 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1355 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1356 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1357 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1358 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1359 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1360 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1361 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1362 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1363 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1364 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1365 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1366 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1367 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1368 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1369 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1370 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1371 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1372 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1373 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1374 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1375 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1376 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1377 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1378 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1379 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1380 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1381 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1382 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1383 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1384 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1385 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1386 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1387 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1388 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1389 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1390 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1391 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1392 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1393 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1394 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1395 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1396 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1397 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1398 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1399 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1400 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1401 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1402 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1403 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1404 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1405 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1406 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1407 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1408 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1409 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1410 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1411 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1412 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1413 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1414 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1415 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1416 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1417 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1418 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1419 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1420 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1421 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1422 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1423 }
1424
1425 return ppc_elf_howto_table[r];
1426};
1427
1428/* Set the howto pointer for a PowerPC ELF reloc. */
1429
1430static void
1431ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1432 arelent *cache_ptr,
1433 Elf_Internal_Rela *dst)
1434{
1435 /* Initialize howto table if not already done. */
1436 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1437 ppc_elf_howto_init ();
1438
1439 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1440 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1441}
1442
1443/* Handle the R_PPC_ADDR16_HA reloc. */
1444
1445static bfd_reloc_status_type
1446ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1447 arelent *reloc_entry,
1448 asymbol *symbol,
1449 void *data ATTRIBUTE_UNUSED,
1450 asection *input_section,
1451 bfd *output_bfd,
1452 char **error_message ATTRIBUTE_UNUSED)
1453{
1454 bfd_vma relocation;
1455
1456 if (output_bfd != NULL)
1457 {
1458 reloc_entry->address += input_section->output_offset;
1459 return bfd_reloc_ok;
1460 }
1461
1462 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1463 return bfd_reloc_outofrange;
1464
1465 if (bfd_is_com_section (symbol->section))
1466 relocation = 0;
1467 else
1468 relocation = symbol->value;
1469
1470 relocation += symbol->section->output_section->vma;
1471 relocation += symbol->section->output_offset;
1472 relocation += reloc_entry->addend;
1473
1474 reloc_entry->addend += (relocation & 0x8000) << 1;
1475
1476 return bfd_reloc_continue;
1477}
1478
1479static bfd_reloc_status_type
1480ppc_elf_unhandled_reloc (bfd *abfd,
1481 arelent *reloc_entry,
1482 asymbol *symbol,
1483 void *data,
1484 asection *input_section,
1485 bfd *output_bfd,
1486 char **error_message)
1487{
1488 /* If this is a relocatable link (output_bfd test tells us), just
1489 call the generic function. Any adjustment will be done at final
1490 link time. */
1491 if (output_bfd != NULL)
1492 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1493 input_section, output_bfd, error_message);
1494
1495 if (error_message != NULL)
1496 {
1497 static char buf[60];
1498 sprintf (buf, _("generic linker can't handle %s"),
1499 reloc_entry->howto->name);
1500 *error_message = buf;
1501 }
1502 return bfd_reloc_dangerous;
1503}
1504\f
1505/* Sections created by the linker. */
1506
1507typedef struct elf_linker_section
1508{
c9a2f333 1509 /* Pointer to the bfd section. */
25dbc73a 1510 asection *section;
c9a2f333
AM		 1511 /* Section name. */
1512 const char *name;
1513 /* Associated bss section name. */
1514 const char *bss_name;
1515 /* Associated symbol name. */
1516 const char *sym_name;
1517 /* Value of symbol. */
1518 bfd_vma sym_val;
25dbc73a
AM		 1519} elf_linker_section_t;
1520
1521/* Linked list of allocated pointer entries. This hangs off of the
1522 symbol lists, and provides allows us to return different pointers,
1523 based on different addend's. */
1524
1525typedef struct elf_linker_section_pointers
1526{
1527 /* next allocated pointer for this symbol */
1528 struct elf_linker_section_pointers *next;
1529 /* offset of pointer from beginning of section */
1530 bfd_vma offset;
1531 /* addend used */
1532 bfd_vma addend;
1533 /* which linker section this is */
1534 elf_linker_section_t *lsect;
25dbc73a
AM		 1535} elf_linker_section_pointers_t;
1536
1537struct ppc_elf_obj_tdata
1538{
1539 struct elf_obj_tdata elf;
1540
1541 /* A mapping from local symbols to offsets into the various linker
1542 sections added. This is index by the symbol index. */
1543 elf_linker_section_pointers_t **linker_section_pointers;
1544};
1545
1546#define ppc_elf_tdata(bfd) \
1547 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
7619e7c7 1548
25dbc73a
AM		 1549#define elf_local_ptr_offsets(bfd) \
1550 (ppc_elf_tdata (bfd)->linker_section_pointers)
7619e7c7 1551
25dbc73a 1552/* Override the generic function because we store some extras. */
7619e7c7 1553
25dbc73a
AM		 1554static bfd_boolean
1555ppc_elf_mkobject (bfd *abfd)
1556{
1557 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1558 abfd->tdata.any = bfd_zalloc (abfd, amt);
1559 if (abfd->tdata.any == NULL)
1560 return FALSE;
1561 return TRUE;
1562}
7619e7c7 1563
25dbc73a
AM		 1564/* Fix bad default arch selected for a 32 bit input bfd when the
1565 default is 64 bit. */
7619e7c7 1566
25dbc73a
AM		 1567static bfd_boolean
1568ppc_elf_object_p (bfd *abfd)
1569{
1570 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1571 {
1572 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
7619e7c7 1573
25dbc73a
AM		 1574 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1575 {
1576 /* Relies on arch after 64 bit default being 32 bit default. */
1577 abfd->arch_info = abfd->arch_info->next;
1578 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1579 }
1580 }
1581 return TRUE;
1582}
7619e7c7 1583
25dbc73a 1584/* Function to set whether a module needs the -mrelocatable bit set. */
7619e7c7 1585
25dbc73a
AM		 1586static bfd_boolean
1587ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1588{
1589 BFD_ASSERT (!elf_flags_init (abfd)
1590 || elf_elfheader (abfd)->e_flags == flags);
7619e7c7 1591
25dbc73a
AM		 1592 elf_elfheader (abfd)->e_flags = flags;
1593 elf_flags_init (abfd) = TRUE;
1594 return TRUE;
1595}
1596
25dbc73a 1597/* Support for core dump NOTE sections. */
deaaf2f3 1598
b34976b6 1599static bfd_boolean
25dbc73a 1600ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
252b5132 1601{
25dbc73a
AM		 1602 int offset;
1603 unsigned int size;
252b5132 1604
25dbc73a
AM		 1605 switch (note->descsz)
1606 {
1607 default:
1608 return FALSE;
252b5132 1609
25dbc73a
AM		 1610 case 268: /* Linux/PPC. */
1611 /* pr_cursig */
1612 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
deaaf2f3 1613
25dbc73a
AM		 1614 /* pr_pid */
1615 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
9abc968f 1616
25dbc73a
AM		 1617 /* pr_reg */
1618 offset = 72;
1619 size = 192;
deaaf2f3 1620
25dbc73a
AM		 1621 break;
1622 }
deaaf2f3 1623
25dbc73a
AM		 1624 /* Make a ".reg/999" section. */
1625 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1626 size, note->descpos + offset);
1627}
252b5132 1628
25dbc73a
AM		 1629static bfd_boolean
1630ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1631{
1632 switch (note->descsz)
deaaf2f3 1633 {
25dbc73a
AM		 1634 default:
1635 return FALSE;
deaaf2f3 1636
25dbc73a
AM		 1637 case 128: /* Linux/PPC elf_prpsinfo. */
1638 elf_tdata (abfd)->core_program
1639 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1640 elf_tdata (abfd)->core_command
1641 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1642 }
9abc968f 1643
25dbc73a
AM		 1644 /* Note that for some reason, a spurious space is tacked
1645 onto the end of the args in some (at least one anyway)
1646 implementations, so strip it off if it exists. */
70bccea4 1647
25dbc73a
AM		 1648 {
1649 char *command = elf_tdata (abfd)->core_command;
1650 int n = strlen (command);
70bccea4 1651
25dbc73a
AM		 1652 if (0 < n && command[n - 1] == ' ')
1653 command[n - 1] = '\0';
1654 }
deaaf2f3 1655
25dbc73a
AM		 1656 return TRUE;
1657}
deaaf2f3 1658
25dbc73a
AM		 1659/* Return address for Ith PLT stub in section PLT, for relocation REL
1660 or (bfd_vma) -1 if it should not be included. */
deaaf2f3 1661
25dbc73a
AM		 1662static bfd_vma
1663ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1664 const asection *plt ATTRIBUTE_UNUSED,
1665 const arelent *rel)
1666{
1667 return rel->address;
1668}
deaaf2f3 1669
25dbc73a 1670/* Handle a PowerPC specific section when reading an object file. This
6dc132d9
L		 1671 is called when bfd_section_from_shdr finds a section with an unknown
1672 type. */
deaaf2f3 1673
25dbc73a 1674static bfd_boolean
6dc132d9
L		 1675ppc_elf_section_from_shdr (bfd *abfd,
1676 Elf_Internal_Shdr *hdr,
1677 const char *name,
1678 int shindex)
25dbc73a
AM		 1679{
1680 asection *newsect;
1681 flagword flags;
d1c6de6f 1682
6dc132d9 1683 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
25dbc73a 1684 return FALSE;
deaaf2f3 1685
25dbc73a
AM		 1686 newsect = hdr->bfd_section;
1687 flags = bfd_get_section_flags (abfd, newsect);
1688 if (hdr->sh_flags & SHF_EXCLUDE)
1689 flags |= SEC_EXCLUDE;
9abc968f 1690
25dbc73a
AM		 1691 if (hdr->sh_type == SHT_ORDERED)
1692 flags |= SEC_SORT_ENTRIES;
d1c6de6f 1693
25dbc73a
AM		 1694 bfd_set_section_flags (abfd, newsect, flags);
1695 return TRUE;
1696}
1697
1698/* Set up any other section flags and such that may be necessary. */
1699
1700static bfd_boolean
1701ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1702 Elf_Internal_Shdr *shdr,
1703 asection *asect)
1704{
1705 if ((asect->flags & SEC_EXCLUDE) != 0)
1706 shdr->sh_flags |= SHF_EXCLUDE;
1707
1708 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1709 shdr->sh_type = SHT_ORDERED;
1710
1711 return TRUE;
1712}
1713
1714/* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1715 need to bump up the number of section headers. */
1716
1717static int
1718ppc_elf_additional_program_headers (bfd *abfd)
1719{
1720 asection *s;
1721 int ret = 0;
d1c6de6f 1722
25dbc73a
AM		 1723 s = bfd_get_section_by_name (abfd, ".sbss2");
1724 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1725 ++ret;
d1c6de6f 1726
25dbc73a
AM		 1727 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1728 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1729 ++ret;
deaaf2f3 1730
25dbc73a
AM		 1731 return ret;
1732}
deaaf2f3 1733
25dbc73a
AM		 1734/* Add extra PPC sections -- Note, for now, make .sbss2 and
1735 .PPC.EMB.sbss0 a normal section, and not a bss section so
1736 that the linker doesn't crater when trying to make more than
1737 2 sections. */
e656e369 1738
25dbc73a
AM		 1739static struct bfd_elf_special_section const ppc_elf_special_sections[]=
1740{
1741 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1742 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1743 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1744 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1745 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1746 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1747 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1748 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1749 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1750 { NULL, 0, 0, 0, 0 }
1751};
1752\f
1753/* Very simple linked list structure for recording apuinfo values. */
1754typedef struct apuinfo_list
1755{
1756 struct apuinfo_list *next;
1757 unsigned long value;
1758}
1759apuinfo_list;
e656e369 1760
25dbc73a 1761static apuinfo_list *head;
deaaf2f3 1762
deaaf2f3 1763
25dbc73a
AM		 1764static void
1765apuinfo_list_init (void)
1766{
1767 head = NULL;
1768}
9abc968f 1769
25dbc73a
AM		 1770static void
1771apuinfo_list_add (unsigned long value)
1772{
1773 apuinfo_list *entry = head;
deaaf2f3 1774
25dbc73a
AM		 1775 while (entry != NULL)
1776 {
1777 if (entry->value == value)
1778 return;
1779 entry = entry->next;
1780 }
b4a38de6 1781
25dbc73a
AM		 1782 entry = bfd_malloc (sizeof (* entry));
1783 if (entry == NULL)
1784 return;
e656e369 1785
25dbc73a
AM		 1786 entry->value = value;
1787 entry->next = head;
1788 head = entry;
1789}
9abc968f 1790
25dbc73a
AM		 1791static unsigned
1792apuinfo_list_length (void)
1793{
1794 apuinfo_list *entry;
1795 unsigned long count;
9abc968f 1796
25dbc73a
AM		 1797 for (entry = head, count = 0;
1798 entry;
1799 entry = entry->next)
1800 ++ count;
e656e369 1801
25dbc73a
AM		 1802 return count;
1803}
eea6121a 1804
25dbc73a
AM		 1805static inline unsigned long
1806apuinfo_list_element (unsigned long number)
1807{
1808 apuinfo_list * entry;
e656e369 1809
25dbc73a
AM		 1810 for (entry = head;
1811 entry && number --;
1812 entry = entry->next)
1813 ;
252b5132 1814
25dbc73a
AM		 1815 return entry ? entry->value : 0;
1816}
1817
1818static void
1819apuinfo_list_finish (void)
1820{
1821 apuinfo_list *entry;
1822
1823 for (entry = head; entry;)
252b5132 1824 {
25dbc73a
AM		 1825 apuinfo_list *next = entry->next;
1826 free (entry);
1827 entry = next;
1828 }
9abc968f 1829
25dbc73a
AM		 1830 head = NULL;
1831}
9abc968f 1832
25dbc73a
AM		 1833#define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
1834#define APUINFO_LABEL "APUinfo"
9abc968f 1835
25dbc73a
AM		 1836/* Scan the input BFDs and create a linked list of
1837 the APUinfo values that will need to be emitted. */
9abc968f 1838
25dbc73a
AM		 1839static void
1840ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1841{
1842 bfd *ibfd;
1843 asection *asec;
1844 char *buffer;
1845 unsigned num_input_sections;
1846 bfd_size_type output_section_size;
1847 unsigned i;
1848 unsigned num_entries;
1849 unsigned long offset;
1850 unsigned long length;
1851 const char *error_message = NULL;
9abc968f 1852
25dbc73a
AM		 1853 if (link_info == NULL)
1854 return;
9abc968f 1855
25dbc73a
AM		 1856 /* Scan the input bfds, looking for apuinfo sections. */
1857 num_input_sections = 0;
1858 output_section_size = 0;
252b5132 1859
25dbc73a 1860 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 1861 {
25dbc73a
AM		 1862 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1863 if (asec)
252b5132 1864 {
25dbc73a
AM		 1865 ++ num_input_sections;
1866 output_section_size += asec->size;
252b5132 1867 }
252b5132
RH		 1868 }
1869
25dbc73a
AM		 1870 /* We need at least one input sections
1871 in order to make merging worthwhile. */
1872 if (num_input_sections < 1)
1873 return;
deaaf2f3 1874
25dbc73a
AM		 1875 /* Just make sure that the output section exists as well. */
1876 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1877 if (asec == NULL)
1878 return;
252b5132 1879
25dbc73a
AM		 1880 /* Allocate a buffer for the contents of the input sections. */
1881 buffer = bfd_malloc (output_section_size);
1882 if (buffer == NULL)
1883 return;
252b5132 1884
25dbc73a
AM		 1885 offset = 0;
1886 apuinfo_list_init ();
252b5132 1887
25dbc73a
AM		 1888 /* Read in the input sections contents. */
1889 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
252b5132 1890 {
25dbc73a
AM		 1891 unsigned long datum;
1892 char *ptr;
252b5132 1893
25dbc73a
AM		 1894 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1895 if (asec == NULL)
1896 continue;
252b5132 1897
25dbc73a
AM		 1898 length = asec->size;
1899 if (length < 24)
1900 {
1901 error_message = _("corrupt or empty %s section in %B");
1902 goto fail;
1903 }
252b5132 1904
25dbc73a
AM		 1905 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
1906 || (bfd_bread (buffer + offset, length, ibfd) != length))
1907 {
1908 error_message = _("unable to read in %s section from %B");
1909 goto fail;
1910 }
252b5132 1911
25dbc73a
AM		 1912 /* Process the contents of the section. */
1913 ptr = buffer + offset;
1914 error_message = _("corrupt %s section in %B");
252b5132 1915
25dbc73a
AM		 1916 /* Verify the contents of the header. Note - we have to
1917 extract the values this way in order to allow for a
1918 host whose endian-ness is different from the target. */
1919 datum = bfd_get_32 (ibfd, ptr);
1920 if (datum != sizeof APUINFO_LABEL)
1921 goto fail;
252b5132 1922
25dbc73a
AM		 1923 datum = bfd_get_32 (ibfd, ptr + 8);
1924 if (datum != 0x2)
1925 goto fail;
252b5132 1926
25dbc73a
AM		 1927 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
1928 goto fail;
252b5132 1929
25dbc73a
AM		 1930 /* Get the number of bytes used for apuinfo entries. */
1931 datum = bfd_get_32 (ibfd, ptr + 4);
1932 if (datum + 20 != length)
1933 goto fail;
1934
1935 /* Make sure that we do not run off the end of the section. */
1936 if (offset + length > output_section_size)
1937 goto fail;
1938
1939 /* Scan the apuinfo section, building a list of apuinfo numbers. */
1940 for (i = 0; i < datum; i += 4)
1941 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
1942
1943 /* Update the offset. */
1944 offset += length;
252b5132
RH		 1945 }
1946
25dbc73a 1947 error_message = NULL;
252b5132 1948
25dbc73a
AM		 1949 /* Compute the size of the output section. */
1950 num_entries = apuinfo_list_length ();
1951 output_section_size = 20 + num_entries * 4;
252b5132 1952
25dbc73a
AM		 1953 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1954
1955 if (! bfd_set_section_size (abfd, asec, output_section_size))
1956 ibfd = abfd,
1957 error_message = _("warning: unable to set size of %s section in %B");
1958
1959 fail:
1960 free (buffer);
1961
1962 if (error_message)
1963 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
1964}
252b5132 1965
25dbc73a
AM		 1966/* Prevent the output section from accumulating the input sections'
1967 contents. We have already stored this in our linked list structure. */
252b5132 1968
25dbc73a
AM		 1969static bfd_boolean
1970ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
1971 asection *asec,
1972 bfd_byte *contents ATTRIBUTE_UNUSED)
1973{
1974 return (apuinfo_list_length ()
1975 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
252b5132
RH		 1976}
1977
25dbc73a
AM		 1978/* Finally we can generate the output section. */
1979
1980static void
1981ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
7619e7c7 1982{
25dbc73a
AM		 1983 bfd_byte *buffer;
1984 asection *asec;
1985 unsigned i;
1986 unsigned num_entries;
1987 bfd_size_type length;
7619e7c7 1988
25dbc73a
AM		 1989 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1990 if (asec == NULL)
1991 return;
1992
1993 if (apuinfo_list_length () == 0)
1994 return;
1995
1996 length = asec->size;
1997 if (length < 20)
1998 return;
1999
2000 buffer = bfd_malloc (length);
2001 if (buffer == NULL)
7619e7c7 2002 {
25dbc73a
AM		 2003 (*_bfd_error_handler)
2004 (_("failed to allocate space for new APUinfo section."));
2005 return;
7619e7c7 2006 }
7619e7c7 2007
25dbc73a
AM		 2008 /* Create the apuinfo header. */
2009 num_entries = apuinfo_list_length ();
2010 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2011 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2012 bfd_put_32 (abfd, 0x2, buffer + 8);
2013 strcpy ((char *) buffer + 12, APUINFO_LABEL);
feee612b 2014
25dbc73a
AM		 2015 length = 20;
2016 for (i = 0; i < num_entries; i++)
feee612b 2017 {
25dbc73a
AM		 2018 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2019 length += 4;
feee612b 2020 }
feee612b 2021
25dbc73a
AM		 2022 if (length != asec->size)
2023 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
252b5132 2024
25dbc73a
AM		 2025 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2026 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
252b5132 2027
25dbc73a
AM		 2028 free (buffer);
2029
2030 apuinfo_list_finish ();
252b5132 2031}
25dbc73a
AM		 2032\f
2033/* The following functions are specific to the ELF linker, while
2034 functions above are used generally. They appear in this file more
2035 or less in the order in which they are called. eg.
2036 ppc_elf_check_relocs is called early in the link process,
2037 ppc_elf_finish_dynamic_sections is one of the last functions
2038 called. */
252b5132 2039
25dbc73a
AM		 2040/* The PPC linker needs to keep track of the number of relocs that it
2041 decides to copy as dynamic relocs in check_relocs for each symbol.
2042 This is so that it can later discard them if they are found to be
2043 unnecessary. We store the information in a field extending the
2044 regular ELF linker hash table. */
ae9a127f 2045
25dbc73a 2046struct ppc_elf_dyn_relocs
252b5132 2047{
25dbc73a 2048 struct ppc_elf_dyn_relocs *next;
252b5132 2049
25dbc73a
AM		 2050 /* The input section of the reloc. */
2051 asection *sec;
252b5132 2052
25dbc73a
AM		 2053 /* Total number of relocs copied for the input section. */
2054 bfd_size_type count;
252b5132 2055
25dbc73a
AM		 2056 /* Number of pc-relative relocs copied for the input section. */
2057 bfd_size_type pc_count;
2058};
252b5132 2059
25dbc73a
AM		 2060/* Of those relocs that might be copied as dynamic relocs, this macro
2061 selects those that must be copied when linking a shared library,
2062 even when the symbol is local. */
252b5132 2063
25dbc73a
AM		 2064#define MUST_BE_DYN_RELOC(RTYPE) \
2065 ((RTYPE) != R_PPC_REL24 \
2066 && (RTYPE) != R_PPC_REL14 \
2067 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2068 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2069 && (RTYPE) != R_PPC_REL32)
252b5132 2070
25dbc73a
AM		 2071/* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2072 copying dynamic variables from a shared lib into an app's dynbss
2073 section, and instead use a dynamic relocation to point into the
2074 shared lib. */
2075#define ELIMINATE_COPY_RELOCS 1
252b5132 2076
25dbc73a 2077/* PPC ELF linker hash entry. */
252b5132 2078
25dbc73a
AM		 2079struct ppc_elf_link_hash_entry
2080{
2081 struct elf_link_hash_entry elf;
252b5132 2082
25dbc73a
AM		 2083 /* If this symbol is used in the linker created sections, the processor
2084 specific backend uses this field to map the field into the offset
2085 from the beginning of the section. */
2086 elf_linker_section_pointers_t *linker_section_pointer;
252b5132 2087
25dbc73a
AM		 2088 /* Track dynamic relocs copied for this symbol. */
2089 struct ppc_elf_dyn_relocs *dyn_relocs;
252b5132 2090
25dbc73a
AM		 2091 /* Contexts in which symbol is used in the GOT (or TOC).
2092 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2093 corresponding relocs are encountered during check_relocs.
2094 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2095 indicate the corresponding GOT entry type is not needed. */
2096#define TLS_GD 1 /* GD reloc. */
2097#define TLS_LD 2 /* LD reloc. */
2098#define TLS_TPREL 4 /* TPREL reloc, => IE. */
2099#define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2100#define TLS_TLS 16 /* Any TLS reloc. */
2101#define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2102 char tls_mask;
2103};
252b5132 2104
25dbc73a
AM		 2105#define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2106
2107/* PPC ELF linker hash table. */
2108
2109struct ppc_elf_link_hash_table
2110{
2111 struct elf_link_hash_table elf;
2112
2113 /* Short-cuts to get to dynamic linker sections. */
2114 asection *got;
2115 asection *relgot;
2116 asection *plt;
2117 asection *relplt;
2118 asection *dynbss;
2119 asection *relbss;
2120 asection *dynsbss;
2121 asection *relsbss;
c9a2f333 2122 elf_linker_section_t sdata[2];
25dbc73a
AM		 2123 asection *sbss;
2124
2125 /* Shortcut to .__tls_get_addr. */
2126 struct elf_link_hash_entry *tls_get_addr;
252b5132 2127
25dbc73a
AM		 2128 /* TLS local dynamic got entry handling. */
2129 union {
2130 bfd_signed_vma refcount;
2131 bfd_vma offset;
2132 } tlsld_got;
252b5132 2133
25dbc73a
AM		 2134 /* Small local sym to section mapping cache. */
2135 struct sym_sec_cache sym_sec;
2136};
252b5132 2137
25dbc73a 2138/* Get the PPC ELF linker hash table from a link_info structure. */
252b5132 2139
25dbc73a
AM		 2140#define ppc_elf_hash_table(p) \
2141 ((struct ppc_elf_link_hash_table *) (p)->hash)
252b5132 2142
25dbc73a 2143/* Create an entry in a PPC ELF linker hash table. */
252b5132 2144
25dbc73a
AM		 2145static struct bfd_hash_entry *
2146ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2147 struct bfd_hash_table *table,
2148 const char *string)
252b5132 2149{
25dbc73a
AM		 2150 /* Allocate the structure if it has not already been allocated by a
2151 subclass. */
2152 if (entry == NULL)
2153 {
2154 entry = bfd_hash_allocate (table,
2155 sizeof (struct ppc_elf_link_hash_entry));
2156 if (entry == NULL)
2157 return entry;
2158 }
252b5132 2159
25dbc73a
AM		 2160 /* Call the allocation method of the superclass. */
2161 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2162 if (entry != NULL)
2163 {
2164 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2165 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2166 ppc_elf_hash_entry (entry)->tls_mask = 0;
2167 }
252b5132 2168
25dbc73a 2169 return entry;
252b5132 2170}
3dab13f6 2171
25dbc73a 2172/* Create a PPC ELF linker hash table. */
3dab13f6 2173
25dbc73a
AM		 2174static struct bfd_link_hash_table *
2175ppc_elf_link_hash_table_create (bfd *abfd)
3dab13f6 2176{
25dbc73a 2177 struct ppc_elf_link_hash_table *ret;
3dab13f6 2178
25dbc73a
AM		 2179 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2180 if (ret == NULL)
2181 return NULL;
3dab13f6 2182
25dbc73a
AM		 2183 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2184 ppc_elf_link_hash_newfunc))
3dab13f6 2185 {
25dbc73a
AM		 2186 free (ret);
2187 return NULL;
2188 }
58111eb7 2189
c9a2f333
AM		 2190 ret->sdata[0].name = ".sdata";
2191 ret->sdata[0].sym_name = "_SDA_BASE_";
2192 ret->sdata[0].bss_name = ".sbss";
2193
2194 ret->sdata[1].name = ".sdata2";
2195 ret->sdata[1].sym_name = "_SDA2_BASE_";
2196 ret->sdata[1].bss_name = ".sbss2";
2197
25dbc73a
AM		 2198 return &ret->elf.root;
2199}
3dab13f6 2200
25dbc73a 2201/* The powerpc .got has a blrl instruction in it. Mark it executable. */
3dab13f6 2202
25dbc73a
AM		 2203static bfd_boolean
2204ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2205{
2206 struct ppc_elf_link_hash_table *htab;
2207 asection *s;
2208 flagword flags;
3dab13f6 2209
25dbc73a
AM		 2210 if (!_bfd_elf_create_got_section (abfd, info))
2211 return FALSE;
3dab13f6 2212
25dbc73a
AM		 2213 htab = ppc_elf_hash_table (info);
2214 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2215 if (s == NULL)
2216 abort ();
3dab13f6 2217
25dbc73a
AM		 2218 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2219 | SEC_LINKER_CREATED);
2220 if (!bfd_set_section_flags (abfd, s, flags))
2221 return FALSE;
3dab13f6 2222
3496cb2a
L		 2223 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got",
2224 SEC_ALLOC | SEC_LOAD
2225 | SEC_HAS_CONTENTS
2226 | SEC_IN_MEMORY
2227 | SEC_LINKER_CREATED
2228 | SEC_READONLY);
25dbc73a 2229 if (!htab->relgot
25dbc73a
AM		 2230 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2231 return FALSE;
3dab13f6 2232
25dbc73a
AM		 2233 return TRUE;
2234}
3dab13f6 2235
25dbc73a
AM		 2236/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2237 to output sections (just like _bfd_elf_create_dynamic_sections has
2238 to create .dynbss and .rela.bss). */
3dab13f6 2239
25dbc73a
AM		 2240static bfd_boolean
2241ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2242{
2243 struct ppc_elf_link_hash_table *htab;
2244 asection *s;
2245 flagword flags;
3dab13f6 2246
25dbc73a 2247 htab = ppc_elf_hash_table (info);
3dab13f6 2248
25dbc73a
AM		 2249 if (htab->got == NULL
2250 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM		 2251 return FALSE;
2252
25dbc73a
AM		 2253 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2254 return FALSE;
3dab13f6 2255
25dbc73a
AM		 2256 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2257 | SEC_LINKER_CREATED);
3dab13f6 2258
25dbc73a 2259 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
3496cb2a
L		 2260 htab->dynsbss = s = bfd_make_section_with_flags (abfd, ".dynsbss",
2261 SEC_ALLOC
2262 | SEC_LINKER_CREATED);
2263 if (s == NULL)
25dbc73a 2264 return FALSE;
3dab13f6 2265
25dbc73a
AM		 2266 if (! info->shared)
2267 {
2268 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
3496cb2a
L		 2269 htab->relsbss = s = bfd_make_section_with_flags (abfd,
2270 ".rela.sbss",
2271 flags | SEC_READONLY);
25dbc73a 2272 if (s == NULL
25dbc73a
AM		 2273 || ! bfd_set_section_alignment (abfd, s, 2))
2274 return FALSE;
2275 }
3dab13f6 2276
25dbc73a
AM		 2277 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2278 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2279 if (s == NULL)
2280 abort ();
3dab13f6 2281
25dbc73a
AM		 2282 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
2283 return bfd_set_section_flags (abfd, s, flags);
2284}
3dab13f6 2285
25dbc73a 2286/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2287
25dbc73a
AM		 2288static void
2289ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
2290 struct elf_link_hash_entry *dir,
2291 struct elf_link_hash_entry *ind)
2292{
2293 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2294
25dbc73a
AM		 2295 edir = (struct ppc_elf_link_hash_entry *) dir;
2296 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2297
25dbc73a
AM		 2298 if (eind->dyn_relocs != NULL)
2299 {
2300 if (edir->dyn_relocs != NULL)
3dab13f6 2301 {
25dbc73a
AM		 2302 struct ppc_elf_dyn_relocs **pp;
2303 struct ppc_elf_dyn_relocs *p;
3dab13f6 2304
25dbc73a
AM		 2305 if (ind->root.type == bfd_link_hash_indirect)
2306 abort ();
2307
2308 /* Add reloc counts against the weak sym to the strong sym
2309 list. Merge any entries against the same section. */
2310 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2311 {
25dbc73a
AM		 2312 struct ppc_elf_dyn_relocs *q;
2313
2314 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2315 if (q->sec == p->sec)
2316 {
2317 q->pc_count += p->pc_count;
2318 q->count += p->count;
2319 *pp = p->next;
2320 break;
2321 }
2322 if (q == NULL)
2323 pp = &p->next;
3dab13f6 2324 }
25dbc73a 2325 *pp = edir->dyn_relocs;
3dab13f6 2326 }
25dbc73a
AM		 2327
2328 edir->dyn_relocs = eind->dyn_relocs;
2329 eind->dyn_relocs = NULL;
3dab13f6 2330 }
3dab13f6 2331
25dbc73a 2332 edir->tls_mask |= eind->tls_mask;
3dab13f6 2333
25dbc73a
AM		 2334 if (ELIMINATE_COPY_RELOCS
2335 && ind->root.type != bfd_link_hash_indirect
2336 && dir->dynamic_adjusted)
2337 {
2338 /* If called to transfer flags for a weakdef during processing
2339 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2340 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2341 dir->ref_dynamic |= ind->ref_dynamic;
2342 dir->ref_regular |= ind->ref_regular;
2343 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
2344 dir->needs_plt |= ind->needs_plt;
2345 }
2346 else
2347 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
2348}
3dab13f6 2349
8853c3d3
AM		 2350/* Return 1 if target is one of ours. */
2351
2352static bfd_boolean
2353is_ppc_elf_target (const struct bfd_target *targ)
2354{
2355 extern const bfd_target bfd_elf32_powerpc_vec;
2356 extern const bfd_target bfd_elf32_powerpcle_vec;
2357
2358 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2359}
2360
25dbc73a
AM		 2361/* Hook called by the linker routine which adds symbols from an object
2362 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 2363
25dbc73a
AM		 2364static bfd_boolean
2365ppc_elf_add_symbol_hook (bfd *abfd,
2366 struct bfd_link_info *info,
2367 Elf_Internal_Sym *sym,
2368 const char **namep ATTRIBUTE_UNUSED,
2369 flagword *flagsp ATTRIBUTE_UNUSED,
2370 asection **secp,
2371 bfd_vma *valp)
2372{
2373 if (sym->st_shndx == SHN_COMMON
2374 && !info->relocatable
2375 && sym->st_size <= elf_gp_size (abfd)
d2663f46 2376 && is_ppc_elf_target (info->hash->creator))
25dbc73a
AM		 2377 {
2378 /* Common symbols less than or equal to -G nn bytes are automatically
2379 put into .sbss. */
2380 struct ppc_elf_link_hash_table *htab;
3dab13f6 2381
25dbc73a
AM		 2382 htab = ppc_elf_hash_table (info);
2383 if (htab->sbss == NULL)
2384 {
644285ef 2385 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 2386
644285ef
AM		 2387 if (!htab->elf.dynobj)
2388 htab->elf.dynobj = abfd;
2389
3496cb2a
L		 2390 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2391 ".sbss",
2392 flags);
2393 if (htab->sbss == NULL)
25dbc73a 2394 return FALSE;
3dab13f6 2395 }
3dab13f6 2396
25dbc73a
AM		 2397 *secp = htab->sbss;
2398 *valp = sym->st_size;
2399 }
3dab13f6 2400
25dbc73a 2401 return TRUE;
3dab13f6
AM		 2402}
2403\f
c9a2f333 2404/* Create a special linker section. */
25dbc73a 2405
c9a2f333 2406static bfd_boolean
55fd94b0
AM		 2407ppc_elf_create_linker_section (bfd *abfd,
2408 struct bfd_link_info *info,
c9a2f333
AM		 2409 flagword flags,
2410 elf_linker_section_t *lsect)
252b5132 2411{
58111eb7 2412 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 2413 asection *s;
58111eb7 2414
c9a2f333
AM		 2415 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2416 | SEC_LINKER_CREATED);
58111eb7
AM		 2417
2418 /* Record the first bfd that needs the special sections. */
2419 if (!htab->elf.dynobj)
2420 htab->elf.dynobj = abfd;
2421
3496cb2a
L		 2422 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2423 lsect->name,
2424 flags);
76750a2f 2425 if (s == NULL
76750a2f 2426 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 2427 return FALSE;
76750a2f 2428 lsect->section = s;
58111eb7 2429
c9a2f333 2430 return TRUE;
252b5132 2431}
252b5132 2432
25dbc73a
AM		 2433/* Find a linker generated pointer with a given addend and type. */
2434
2435static elf_linker_section_pointers_t *
2436elf_find_pointer_linker_section
2437 (elf_linker_section_pointers_t *linker_pointers,
2438 bfd_vma addend,
2439 elf_linker_section_t *lsect)
252b5132 2440{
25dbc73a
AM		 2441 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2442 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2443 return linker_pointers;
252b5132 2444
25dbc73a
AM		 2445 return NULL;
2446}
2447
2448/* Allocate a pointer to live in a linker created section. */
2449
2450static bfd_boolean
2451elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM		 2452 elf_linker_section_t *lsect,
2453 struct elf_link_hash_entry *h,
2454 const Elf_Internal_Rela *rel)
2455{
2456 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2457 elf_linker_section_pointers_t *linker_section_ptr;
2458 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2459 bfd_size_type amt;
2460
2461 BFD_ASSERT (lsect != NULL);
2462
2463 /* Is this a global symbol? */
2464 if (h != NULL)
2465 {
2466 struct ppc_elf_link_hash_entry *eh;
2467
2468 /* Has this symbol already been allocated? If so, our work is done. */
2469 eh = (struct ppc_elf_link_hash_entry *) h;
2470 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2471 rel->r_addend,
2472 lsect))
2473 return TRUE;
2474
2475 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM		 2476 }
2477 else
2478 {
2479 /* Allocation of a pointer to a local symbol. */
2480 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2481
2482 /* Allocate a table to hold the local symbols if first time. */
2483 if (!ptr)
2484 {
2485 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2486
2487 amt = num_symbols;
2488 amt *= sizeof (elf_linker_section_pointers_t *);
2489 ptr = bfd_zalloc (abfd, amt);
2490
2491 if (!ptr)
2492 return FALSE;
2493
2494 elf_local_ptr_offsets (abfd) = ptr;
2495 }
2496
2497 /* Has this symbol already been allocated? If so, our work is done. */
2498 if (elf_find_pointer_linker_section (ptr[r_symndx],
2499 rel->r_addend,
2500 lsect))
2501 return TRUE;
252b5132 2502
25dbc73a 2503 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 2504 }
41fcb14e 2505
25dbc73a
AM		 2506 /* Allocate space for a pointer in the linker section, and allocate
2507 a new pointer record from internal memory. */
2508 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2509 amt = sizeof (elf_linker_section_pointers_t);
2510 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 2511
25dbc73a 2512 if (!linker_section_ptr)
7619e7c7 2513 return FALSE;
41fcb14e 2514
25dbc73a
AM		 2515 linker_section_ptr->next = *ptr_linker_section_ptr;
2516 linker_section_ptr->addend = rel->r_addend;
2517 linker_section_ptr->lsect = lsect;
25dbc73a 2518 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 2519
25dbc73a
AM		 2520 linker_section_ptr->offset = lsect->section->size;
2521 lsect->section->size += 4;
7619e7c7 2522
25dbc73a
AM		 2523#ifdef DEBUG
2524 fprintf (stderr,
2525 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2526 lsect->name, (long) linker_section_ptr->offset,
2527 (long) lsect->section->size);
2528#endif
7619e7c7
AM		 2529
2530 return TRUE;
41fcb14e
AM		 2531}
2532
b34976b6 2533static bfd_boolean
25dbc73a
AM		 2534update_local_sym_info (bfd *abfd,
2535 Elf_Internal_Shdr *symtab_hdr,
2536 unsigned long r_symndx,
2537 int tls_type)
252b5132 2538{
25dbc73a
AM		 2539 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2540 char *local_got_tls_masks;
252b5132 2541
25dbc73a 2542 if (local_got_refcounts == NULL)
252b5132 2543 {
25dbc73a
AM		 2544 bfd_size_type size = symtab_hdr->sh_info;
2545
2546 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2547 local_got_refcounts = bfd_zalloc (abfd, size);
2548 if (local_got_refcounts == NULL)
b34976b6 2549 return FALSE;
25dbc73a 2550 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 2551 }
41fcb14e 2552
25dbc73a
AM		 2553 local_got_refcounts[r_symndx] += 1;
2554 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2555 local_got_tls_masks[r_symndx] |= tls_type;
2556 return TRUE;
2557}
41fcb14e 2558
25dbc73a
AM		 2559static void
2560bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2561{
2562 (*_bfd_error_handler)
2563 (_("%B: relocation %s cannot be used when making a shared object"),
2564 abfd,
2565 ppc_elf_howto_table[r_type]->name);
2566 bfd_set_error (bfd_error_bad_value);
252b5132
RH		 2567}
2568
25dbc73a
AM		 2569/* Look through the relocs for a section during the first phase, and
2570 allocate space in the global offset table or procedure linkage
2571 table. */
252b5132 2572
b34976b6 2573static bfd_boolean
25dbc73a
AM		 2574ppc_elf_check_relocs (bfd *abfd,
2575 struct bfd_link_info *info,
2576 asection *sec,
2577 const Elf_Internal_Rela *relocs)
252b5132 2578{
7619e7c7 2579 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM		 2580 Elf_Internal_Shdr *symtab_hdr;
2581 struct elf_link_hash_entry **sym_hashes;
2582 const Elf_Internal_Rela *rel;
2583 const Elf_Internal_Rela *rel_end;
2584 asection *sreloc;
2585
2586 if (info->relocatable)
2587 return TRUE;
252b5132 2588
c87b5a93
AM		 2589 /* Don't do anything special with non-loaded, non-alloced sections.
2590 In particular, any relocs in such sections should not affect GOT
2591 and PLT reference counting (ie. we don't allow them to create GOT
2592 or PLT entries), there's no possibility or desire to optimize TLS
2593 relocs, and there's not much point in propagating relocs to shared
2594 libs that the dynamic linker won't relocate. */
2595 if ((sec->flags & SEC_ALLOC) == 0)
2596 return TRUE;
2597
252b5132 2598#ifdef DEBUG
25dbc73a
AM		 2599 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2600 sec, abfd);
252b5132
RH		 2601#endif
2602
25dbc73a
AM		 2603 /* Initialize howto table if not already done. */
2604 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2605 ppc_elf_howto_init ();
2606
7619e7c7 2607 htab = ppc_elf_hash_table (info);
25dbc73a
AM		 2608 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2609 sym_hashes = elf_sym_hashes (abfd);
2610 sreloc = NULL;
2611
2612 rel_end = relocs + sec->reloc_count;
2613 for (rel = relocs; rel < rel_end; rel++)
2614 {
2615 unsigned long r_symndx;
2616 enum elf_ppc_reloc_type r_type;
2617 struct elf_link_hash_entry *h;
2618 int tls_type = 0;
2619
2620 r_symndx = ELF32_R_SYM (rel->r_info);
2621 if (r_symndx < symtab_hdr->sh_info)
2622 h = NULL;
2623 else
2624 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2625
2626 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2627 This shows up in particular in an R_PPC_ADDR32 in the eabi
2628 startup code. */
2629 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 2630 {
25dbc73a
AM		 2631 if (htab->got == NULL)
2632 {
2633 if (htab->elf.dynobj == NULL)
2634 htab->elf.dynobj = abfd;
2635 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2636 return FALSE;
2637 }
2638 }
252b5132 2639
25dbc73a
AM		 2640 r_type = ELF32_R_TYPE (rel->r_info);
2641 switch (r_type)
2642 {
2643 case R_PPC_GOT_TLSLD16:
2644 case R_PPC_GOT_TLSLD16_LO:
2645 case R_PPC_GOT_TLSLD16_HI:
2646 case R_PPC_GOT_TLSLD16_HA:
2647 htab->tlsld_got.refcount += 1;
2648 tls_type = TLS_TLS | TLS_LD;
2649 goto dogottls;
252b5132 2650
25dbc73a
AM		 2651 case R_PPC_GOT_TLSGD16:
2652 case R_PPC_GOT_TLSGD16_LO:
2653 case R_PPC_GOT_TLSGD16_HI:
2654 case R_PPC_GOT_TLSGD16_HA:
2655 tls_type = TLS_TLS | TLS_GD;
2656 goto dogottls;
2657
2658 case R_PPC_GOT_TPREL16:
2659 case R_PPC_GOT_TPREL16_LO:
2660 case R_PPC_GOT_TPREL16_HI:
2661 case R_PPC_GOT_TPREL16_HA:
2662 if (info->shared)
2663 info->flags |= DF_STATIC_TLS;
2664 tls_type = TLS_TLS | TLS_TPREL;
2665 goto dogottls;
2666
2667 case R_PPC_GOT_DTPREL16:
2668 case R_PPC_GOT_DTPREL16_LO:
2669 case R_PPC_GOT_DTPREL16_HI:
2670 case R_PPC_GOT_DTPREL16_HA:
2671 tls_type = TLS_TLS | TLS_DTPREL;
2672 dogottls:
2673 sec->has_tls_reloc = 1;
2674 /* Fall thru */
252b5132 2675
25dbc73a
AM		 2676 /* GOT16 relocations */
2677 case R_PPC_GOT16:
2678 case R_PPC_GOT16_LO:
2679 case R_PPC_GOT16_HI:
2680 case R_PPC_GOT16_HA:
2681 /* This symbol requires a global offset table entry. */
2682 if (htab->got == NULL)
2683 {
2684 if (htab->elf.dynobj == NULL)
2685 htab->elf.dynobj = abfd;
2686 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2687 return FALSE;
2688 }
2689 if (h != NULL)
2690 {
2691 h->got.refcount += 1;
2692 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2693 }
2694 else
2695 /* This is a global offset table entry for a local symbol. */
2696 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2697 return FALSE;
2698 break;
252b5132 2699
25dbc73a
AM		 2700 /* Indirect .sdata relocation. */
2701 case R_PPC_EMB_SDAI16:
2702 if (info->shared)
2703 {
2704 bad_shared_reloc (abfd, r_type);
2705 return FALSE;
2706 }
c9a2f333
AM		 2707 if (htab->sdata[0].section == NULL
2708 && !ppc_elf_create_linker_section (abfd, info, 0,
2709 &htab->sdata[0]))
2710 return FALSE;
76750a2f
AM		 2711 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
2712 h, rel))
25dbc73a
AM		 2713 return FALSE;
2714 break;
252b5132 2715
25dbc73a
AM		 2716 /* Indirect .sdata2 relocation. */
2717 case R_PPC_EMB_SDA2I16:
2718 if (info->shared)
2719 {
2720 bad_shared_reloc (abfd, r_type);
2721 return FALSE;
2722 }
c9a2f333
AM		 2723 if (htab->sdata[1].section == NULL
2724 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
2725 &htab->sdata[1]))
2726 return FALSE;
76750a2f
AM		 2727 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
2728 h, rel))
25dbc73a
AM		 2729 return FALSE;
2730 break;
252b5132 2731
25dbc73a
AM		 2732 case R_PPC_SDAREL16:
2733 case R_PPC_EMB_SDA2REL:
2734 case R_PPC_EMB_SDA21:
2735 case R_PPC_EMB_RELSDA:
2736 case R_PPC_EMB_NADDR32:
2737 case R_PPC_EMB_NADDR16:
2738 case R_PPC_EMB_NADDR16_LO:
2739 case R_PPC_EMB_NADDR16_HI:
2740 case R_PPC_EMB_NADDR16_HA:
2741 if (info->shared)
2742 {
2743 bad_shared_reloc (abfd, r_type);
2744 return FALSE;
2745 }
2746 break;
252b5132 2747
25dbc73a
AM		 2748 case R_PPC_PLT32:
2749 case R_PPC_PLTREL24:
2750 case R_PPC_PLTREL32:
2751 case R_PPC_PLT16_LO:
2752 case R_PPC_PLT16_HI:
2753 case R_PPC_PLT16_HA:
2754#ifdef DEBUG
2755 fprintf (stderr, "Reloc requires a PLT entry\n");
2756#endif
2757 /* This symbol requires a procedure linkage table entry. We
2758 actually build the entry in finish_dynamic_symbol,
2759 because this might be a case of linking PIC code without
2760 linking in any dynamic objects, in which case we don't
2761 need to generate a procedure linkage table after all. */
7619e7c7 2762
25dbc73a
AM		 2763 if (h == NULL)
2764 {
2765 /* It does not make sense to have a procedure linkage
2766 table entry for a local symbol. */
2767 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
2768 "local symbol"),
2769 abfd,
2770 sec,
2771 (long) rel->r_offset,
2772 ppc_elf_howto_table[r_type]->name);
2773 bfd_set_error (bfd_error_bad_value);
2774 return FALSE;
2775 }
ee05f2fe 2776
25dbc73a
AM		 2777 h->needs_plt = 1;
2778 h->plt.refcount++;
2779 break;
ee05f2fe 2780
25dbc73a
AM		 2781 /* The following relocations don't need to propagate the
2782 relocation if linking a shared object since they are
2783 section relative. */
2784 case R_PPC_SECTOFF:
2785 case R_PPC_SECTOFF_LO:
2786 case R_PPC_SECTOFF_HI:
2787 case R_PPC_SECTOFF_HA:
2788 case R_PPC_DTPREL16:
2789 case R_PPC_DTPREL16_LO:
2790 case R_PPC_DTPREL16_HI:
2791 case R_PPC_DTPREL16_HA:
2792 case R_PPC_TOC16:
2793 break;
252b5132 2794
25dbc73a
AM		 2795 /* This are just markers. */
2796 case R_PPC_TLS:
2797 case R_PPC_EMB_MRKREF:
2798 case R_PPC_NONE:
2799 case R_PPC_max:
2800 break;
252b5132 2801
25dbc73a
AM		 2802 /* These should only appear in dynamic objects. */
2803 case R_PPC_COPY:
2804 case R_PPC_GLOB_DAT:
2805 case R_PPC_JMP_SLOT:
2806 case R_PPC_RELATIVE:
2807 break;
252b5132 2808
25dbc73a
AM		 2809 /* These aren't handled yet. We'll report an error later. */
2810 case R_PPC_ADDR30:
2811 case R_PPC_EMB_RELSEC16:
2812 case R_PPC_EMB_RELST_LO:
2813 case R_PPC_EMB_RELST_HI:
2814 case R_PPC_EMB_RELST_HA:
2815 case R_PPC_EMB_BIT_FLD:
2816 break;
252b5132 2817
25dbc73a
AM		 2818 /* This refers only to functions defined in the shared library. */
2819 case R_PPC_LOCAL24PC:
2820 break;
252b5132 2821
25dbc73a
AM		 2822 /* This relocation describes the C++ object vtable hierarchy.
2823 Reconstruct it for later use during GC. */
2824 case R_PPC_GNU_VTINHERIT:
2825 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2826 return FALSE;
2827 break;
252b5132 2828
25dbc73a
AM		 2829 /* This relocation describes which C++ vtable entries are actually
2830 used. Record for later use during GC. */
2831 case R_PPC_GNU_VTENTRY:
2832 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2833 return FALSE;
2834 break;
252b5132 2835
25dbc73a
AM		 2836 /* We shouldn't really be seeing these. */
2837 case R_PPC_TPREL32:
2838 if (info->shared)
2839 info->flags |= DF_STATIC_TLS;
2840 goto dodyn;
252b5132 2841
25dbc73a
AM		 2842 /* Nor these. */
2843 case R_PPC_DTPMOD32:
2844 case R_PPC_DTPREL32:
2845 goto dodyn;
252b5132 2846
25dbc73a
AM		 2847 case R_PPC_TPREL16:
2848 case R_PPC_TPREL16_LO:
2849 case R_PPC_TPREL16_HI:
2850 case R_PPC_TPREL16_HA:
2851 if (info->shared)
2852 info->flags |= DF_STATIC_TLS;
2853 goto dodyn;
ee05f2fe 2854
25dbc73a
AM		 2855 /* When creating a shared object, we must copy these
2856 relocs into the output file. We create a reloc
2857 section in dynobj and make room for the reloc. */
2858 case R_PPC_REL24:
2859 case R_PPC_REL14:
2860 case R_PPC_REL14_BRTAKEN:
2861 case R_PPC_REL14_BRNTAKEN:
2862 case R_PPC_REL32:
2863 if (h == NULL
2864 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2865 break;
2866 /* fall through */
ee05f2fe 2867
25dbc73a
AM		 2868 case R_PPC_ADDR32:
2869 case R_PPC_ADDR24:
2870 case R_PPC_ADDR16:
2871 case R_PPC_ADDR16_LO:
2872 case R_PPC_ADDR16_HI:
2873 case R_PPC_ADDR16_HA:
2874 case R_PPC_ADDR14:
2875 case R_PPC_ADDR14_BRTAKEN:
2876 case R_PPC_ADDR14_BRNTAKEN:
2877 case R_PPC_UADDR32:
2878 case R_PPC_UADDR16:
2879 if (h != NULL && !info->shared)
2880 {
2881 /* We may need a plt entry if the symbol turns out to be
2882 a function defined in a dynamic object. */
2883 h->plt.refcount++;
7fce784e 2884
25dbc73a
AM		 2885 /* We may need a copy reloc too. */
2886 h->non_got_ref = 1;
2887 }
7619e7c7 2888
25dbc73a
AM		 2889 dodyn:
2890 /* If we are creating a shared library, and this is a reloc
2891 against a global symbol, or a non PC relative reloc
2892 against a local symbol, then we need to copy the reloc
2893 into the shared library. However, if we are linking with
2894 -Bsymbolic, we do not need to copy a reloc against a
2895 global symbol which is defined in an object we are
2896 including in the link (i.e., DEF_REGULAR is set). At
2897 this point we have not seen all the input files, so it is
2898 possible that DEF_REGULAR is not set now but will be set
2899 later (it is never cleared). In case of a weak definition,
2900 DEF_REGULAR may be cleared later by a strong definition in
2901 a shared library. We account for that possibility below by
2902 storing information in the dyn_relocs field of the hash
2903 table entry. A similar situation occurs when creating
2904 shared libraries and symbol visibility changes render the
2905 symbol local.
7619e7c7 2906
25dbc73a
AM		 2907 If on the other hand, we are creating an executable, we
2908 may need to keep relocations for symbols satisfied by a
2909 dynamic library if we manage to avoid copy relocs for the
2910 symbol. */
2911 if ((info->shared
2912 && (MUST_BE_DYN_RELOC (r_type)
2913 || (h != NULL
2914 && (! info->symbolic
2915 || h->root.type == bfd_link_hash_defweak
2916 || !h->def_regular))))
2917 || (ELIMINATE_COPY_RELOCS
2918 && !info->shared
25dbc73a
AM		 2919 && h != NULL
2920 && (h->root.type == bfd_link_hash_defweak
2921 || !h->def_regular)))
2922 {
2923 struct ppc_elf_dyn_relocs *p;
2924 struct ppc_elf_dyn_relocs **head;
7619e7c7 2925
25dbc73a
AM		 2926#ifdef DEBUG
2927 fprintf (stderr,
2928 "ppc_elf_check_relocs needs to "
2929 "create relocation for %s\n",
2930 (h && h->root.root.string
2931 ? h->root.root.string : "<unknown>"));
2932#endif
2933 if (sreloc == NULL)
2934 {
2935 const char *name;
7619e7c7 2936
25dbc73a
AM		 2937 name = (bfd_elf_string_from_elf_section
2938 (abfd,
2939 elf_elfheader (abfd)->e_shstrndx,
2940 elf_section_data (sec)->rel_hdr.sh_name));
2941 if (name == NULL)
2942 return FALSE;
7619e7c7 2943
25dbc73a
AM		 2944 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2945 && strcmp (bfd_get_section_name (abfd, sec),
2946 name + 5) == 0);
7619e7c7 2947
c9a2f333
AM		 2948 if (htab->elf.dynobj == NULL)
2949 htab->elf.dynobj = abfd;
25dbc73a
AM		 2950 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
2951 if (sreloc == NULL)
2952 {
2953 flagword flags;
7619e7c7 2954
25dbc73a 2955 flags = (SEC_HAS_CONTENTS | SEC_READONLY
c87b5a93
AM		 2956 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2957 | SEC_ALLOC | SEC_LOAD);
3496cb2a
L		 2958 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
2959 name,
2960 flags);
25dbc73a 2961 if (sreloc == NULL
25dbc73a
AM		 2962 || ! bfd_set_section_alignment (htab->elf.dynobj,
2963 sreloc, 2))
2964 return FALSE;
2965 }
2966 elf_section_data (sec)->sreloc = sreloc;
2967 }
7619e7c7 2968
25dbc73a
AM		 2969 /* If this is a global symbol, we count the number of
2970 relocations we need for this symbol. */
2971 if (h != NULL)
2972 {
2973 head = &ppc_elf_hash_entry (h)->dyn_relocs;
2974 }
2975 else
2976 {
2977 /* Track dynamic relocs needed for local syms too.
2978 We really need local syms available to do this
2979 easily. Oh well. */
7619e7c7 2980
25dbc73a
AM		 2981 asection *s;
2982 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2983 sec, r_symndx);
2984 if (s == NULL)
2985 return FALSE;
7fce784e 2986
25dbc73a
AM		 2987 head = ((struct ppc_elf_dyn_relocs **)
2988 &elf_section_data (s)->local_dynrel);
2989 }
7fce784e 2990
25dbc73a
AM		 2991 p = *head;
2992 if (p == NULL || p->sec != sec)
2993 {
2994 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
2995 if (p == NULL)
2996 return FALSE;
2997 p->next = *head;
2998 *head = p;
2999 p->sec = sec;
3000 p->count = 0;
3001 p->pc_count = 0;
3002 }
3003
3004 p->count += 1;
3005 if (!MUST_BE_DYN_RELOC (r_type))
3006 p->pc_count += 1;
7619e7c7 3007 }
25dbc73a
AM		 3008
3009 break;
7619e7c7
AM		 3010 }
3011 }
ee05f2fe 3012
25dbc73a
AM		 3013 return TRUE;
3014}
3015\f
8853c3d3
AM		 3016/* Merge backend specific data from an object file to the output
3017 object file when linking. */
3018
3019static bfd_boolean
3020ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3021{
3022 flagword old_flags;
3023 flagword new_flags;
3024 bfd_boolean error;
3025
3026 if (!is_ppc_elf_target (ibfd->xvec)
3027 || !is_ppc_elf_target (obfd->xvec))
3028 return TRUE;
3029
3030 /* Check if we have the same endianess. */
3031 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3032 return FALSE;
3033
3034 new_flags = elf_elfheader (ibfd)->e_flags;
3035 old_flags = elf_elfheader (obfd)->e_flags;
3036 if (!elf_flags_init (obfd))
3037 {
3038 /* First call, no flags set. */
3039 elf_flags_init (obfd) = TRUE;
3040 elf_elfheader (obfd)->e_flags = new_flags;
3041 }
3042
3043 /* Compatible flags are ok. */
3044 else if (new_flags == old_flags)
3045 ;
3046
3047 /* Incompatible flags. */
3048 else
3049 {
3050 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3051 to be linked with either. */
3052 error = FALSE;
3053 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3054 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3055 {
3056 error = TRUE;
3057 (*_bfd_error_handler)
3058 (_("%B: compiled with -mrelocatable and linked with "
3059 "modules compiled normally"), ibfd);
3060 }
3061 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3062 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3063 {
3064 error = TRUE;
3065 (*_bfd_error_handler)
3066 (_("%B: compiled normally and linked with "
3067 "modules compiled with -mrelocatable"), ibfd);
3068 }
3069
3070 /* The output is -mrelocatable-lib iff both the input files are. */
3071 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3072 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3073
3074 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3075 but each input file is either -mrelocatable or -mrelocatable-lib. */
3076 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3077 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3078 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3079 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3080
3081 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3082 any module uses it. */
3083 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3084
3085 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3086 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3087
3088 /* Warn about any other mismatches. */
3089 if (new_flags != old_flags)
3090 {
3091 error = TRUE;
3092 (*_bfd_error_handler)
3093 (_("%B: uses different e_flags (0x%lx) fields "
3094 "than previous modules (0x%lx)"),
3095 ibfd, (long) new_flags, (long) old_flags);
3096 }
3097
3098 if (error)
3099 {
3100 bfd_set_error (bfd_error_bad_value);
3101 return FALSE;
3102 }
3103 }
3104
3105 return TRUE;
3106}
3107\f
25dbc73a
AM		 3108/* Return the section that should be marked against GC for a given
3109 relocation. */
586119b3 3110
25dbc73a
AM		 3111static asection *
3112ppc_elf_gc_mark_hook (asection *sec,
3113 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3114 Elf_Internal_Rela *rel,
3115 struct elf_link_hash_entry *h,
3116 Elf_Internal_Sym *sym)
3117{
3118 if (h != NULL)
ee05f2fe 3119 {
25dbc73a 3120 switch (ELF32_R_TYPE (rel->r_info))
ee05f2fe 3121 {
25dbc73a
AM		 3122 case R_PPC_GNU_VTINHERIT:
3123 case R_PPC_GNU_VTENTRY:
3124 break;
ee05f2fe 3125
25dbc73a
AM		 3126 default:
3127 switch (h->root.type)
ee05f2fe 3128 {
25dbc73a
AM		 3129 case bfd_link_hash_defined:
3130 case bfd_link_hash_defweak:
3131 return h->root.u.def.section;
3132
3133 case bfd_link_hash_common:
3134 return h->root.u.c.p->section;
3135
3136 default:
3137 break;
ee05f2fe
AM		 3138 }
3139 }
25dbc73a
AM		 3140 }
3141 else
3142 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4e795f50 3143
25dbc73a
AM		 3144 return NULL;
3145}
a876ecf9 3146
25dbc73a
AM		 3147/* Update the got, plt and dynamic reloc reference counts for the
3148 section being removed. */
3149
3150static bfd_boolean
3151ppc_elf_gc_sweep_hook (bfd *abfd,
3152 struct bfd_link_info *info,
3153 asection *sec,
3154 const Elf_Internal_Rela *relocs)
3155{
3156 struct ppc_elf_link_hash_table *htab;
3157 Elf_Internal_Shdr *symtab_hdr;
3158 struct elf_link_hash_entry **sym_hashes;
3159 bfd_signed_vma *local_got_refcounts;
3160 const Elf_Internal_Rela *rel, *relend;
3161
c87b5a93
AM		 3162 if ((sec->flags & SEC_ALLOC) == 0)
3163 return TRUE;
3164
25dbc73a
AM		 3165 elf_section_data (sec)->local_dynrel = NULL;
3166
3167 htab = ppc_elf_hash_table (info);
3168 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3169 sym_hashes = elf_sym_hashes (abfd);
3170 local_got_refcounts = elf_local_got_refcounts (abfd);
3171
3172 relend = relocs + sec->reloc_count;
3173 for (rel = relocs; rel < relend; rel++)
3174 {
3175 unsigned long r_symndx;
3176 enum elf_ppc_reloc_type r_type;
3177 struct elf_link_hash_entry *h = NULL;
3178
3179 r_symndx = ELF32_R_SYM (rel->r_info);
3180 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 3181 {
25dbc73a
AM		 3182 struct ppc_elf_dyn_relocs **pp, *p;
3183 struct ppc_elf_link_hash_entry *eh;
3184
3185 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3186 while (h->root.type == bfd_link_hash_indirect
3187 || h->root.type == bfd_link_hash_warning)
3188 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3189 eh = (struct ppc_elf_link_hash_entry *) h;
3190
3191 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3192 if (p->sec == sec)
3193 {
3194 /* Everything must go for SEC. */
3195 *pp = p->next;
3196 break;
3197 }
a876ecf9 3198 }
ee05f2fe 3199
25dbc73a
AM		 3200 r_type = ELF32_R_TYPE (rel->r_info);
3201 switch (r_type)
ee05f2fe 3202 {
25dbc73a
AM		 3203 case R_PPC_GOT_TLSLD16:
3204 case R_PPC_GOT_TLSLD16_LO:
3205 case R_PPC_GOT_TLSLD16_HI:
3206 case R_PPC_GOT_TLSLD16_HA:
3207 htab->tlsld_got.refcount -= 1;
3208 /* Fall thru */
3209
3210 case R_PPC_GOT_TLSGD16:
3211 case R_PPC_GOT_TLSGD16_LO:
3212 case R_PPC_GOT_TLSGD16_HI:
3213 case R_PPC_GOT_TLSGD16_HA:
3214 case R_PPC_GOT_TPREL16:
3215 case R_PPC_GOT_TPREL16_LO:
3216 case R_PPC_GOT_TPREL16_HI:
3217 case R_PPC_GOT_TPREL16_HA:
3218 case R_PPC_GOT_DTPREL16:
3219 case R_PPC_GOT_DTPREL16_LO:
3220 case R_PPC_GOT_DTPREL16_HI:
3221 case R_PPC_GOT_DTPREL16_HA:
3222 case R_PPC_GOT16:
3223 case R_PPC_GOT16_LO:
3224 case R_PPC_GOT16_HI:
3225 case R_PPC_GOT16_HA:
3226 if (h != NULL)
ee05f2fe 3227 {
25dbc73a
AM		 3228 if (h->got.refcount > 0)
3229 h->got.refcount--;
ee05f2fe 3230 }
25dbc73a
AM		 3231 else if (local_got_refcounts != NULL)
3232 {
3233 if (local_got_refcounts[r_symndx] > 0)
3234 local_got_refcounts[r_symndx]--;
3235 }
3236 break;
ee05f2fe 3237
25dbc73a
AM		 3238 case R_PPC_REL24:
3239 case R_PPC_REL14:
3240 case R_PPC_REL14_BRTAKEN:
3241 case R_PPC_REL14_BRNTAKEN:
3242 case R_PPC_REL32:
3243 if (h == NULL
3244 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3245 break;
3246 /* Fall thru */
ee05f2fe 3247
25dbc73a
AM		 3248 case R_PPC_ADDR32:
3249 case R_PPC_ADDR24:
3250 case R_PPC_ADDR16:
3251 case R_PPC_ADDR16_LO:
3252 case R_PPC_ADDR16_HI:
3253 case R_PPC_ADDR16_HA:
3254 case R_PPC_ADDR14:
3255 case R_PPC_ADDR14_BRTAKEN:
3256 case R_PPC_ADDR14_BRNTAKEN:
3257 case R_PPC_UADDR32:
3258 case R_PPC_UADDR16:
3259 case R_PPC_PLT32:
3260 case R_PPC_PLTREL24:
3261 case R_PPC_PLT16_LO:
3262 case R_PPC_PLT16_HI:
3263 case R_PPC_PLT16_HA:
3264 if (h != NULL)
3265 {
3266 if (h->plt.refcount > 0)
3267 h->plt.refcount--;
3268 }
3269 break;
ee05f2fe 3270
25dbc73a
AM		 3271 default:
3272 break;
3273 }
7fce784e 3274 }
7fce784e
AS		 3275 return TRUE;
3276}
25dbc73a
AM		 3277\f
3278/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 3279
25dbc73a
AM		 3280asection *
3281ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 3282{
25dbc73a 3283 struct ppc_elf_link_hash_table *htab;
7fce784e 3284
25dbc73a
AM		 3285 htab = ppc_elf_hash_table (info);
3286 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3287 FALSE, FALSE, TRUE);
7fce784e 3288
25dbc73a 3289 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS		 3290}
3291
25dbc73a
AM		 3292/* Run through all the TLS relocs looking for optimization
3293 opportunities. */
252b5132 3294
25dbc73a
AM		 3295bfd_boolean
3296ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3297 struct bfd_link_info *info)
252b5132 3298{
7fce784e 3299 bfd *ibfd;
25dbc73a
AM		 3300 asection *sec;
3301 struct ppc_elf_link_hash_table *htab;
252b5132 3302
25dbc73a
AM		 3303 if (info->relocatable || info->shared)
3304 return TRUE;
252b5132 3305
7619e7c7 3306 htab = ppc_elf_hash_table (info);
25dbc73a 3307 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 3308 {
25dbc73a
AM		 3309 Elf_Internal_Sym *locsyms = NULL;
3310 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7619e7c7 3311
25dbc73a
AM		 3312 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3313 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3314 {
3315 Elf_Internal_Rela *relstart, *rel, *relend;
3316 int expecting_tls_get_addr;
252b5132 3317
25dbc73a
AM		 3318 /* Read the relocations. */
3319 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3320 info->keep_memory);
3321 if (relstart == NULL)
3322 return FALSE;
7619e7c7 3323
25dbc73a
AM		 3324 expecting_tls_get_addr = 0;
3325 relend = relstart + sec->reloc_count;
3326 for (rel = relstart; rel < relend; rel++)
3327 {
3328 enum elf_ppc_reloc_type r_type;
3329 unsigned long r_symndx;
3330 struct elf_link_hash_entry *h = NULL;
3331 char *tls_mask;
3332 char tls_set, tls_clear;
3333 bfd_boolean is_local;
7fce784e 3334
25dbc73a
AM		 3335 r_symndx = ELF32_R_SYM (rel->r_info);
3336 if (r_symndx >= symtab_hdr->sh_info)
3337 {
3338 struct elf_link_hash_entry **sym_hashes;
7fce784e 3339
25dbc73a
AM		 3340 sym_hashes = elf_sym_hashes (ibfd);
3341 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3342 while (h->root.type == bfd_link_hash_indirect
3343 || h->root.type == bfd_link_hash_warning)
3344 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3345 }
7619e7c7 3346
25dbc73a
AM		 3347 is_local = FALSE;
3348 if (h == NULL
3349 || !h->def_dynamic)
3350 is_local = TRUE;
7619e7c7 3351
25dbc73a
AM		 3352 r_type = ELF32_R_TYPE (rel->r_info);
3353 switch (r_type)
7619e7c7 3354 {
25dbc73a
AM		 3355 case R_PPC_GOT_TLSLD16:
3356 case R_PPC_GOT_TLSLD16_LO:
3357 case R_PPC_GOT_TLSLD16_HI:
3358 case R_PPC_GOT_TLSLD16_HA:
3359 /* These relocs should never be against a symbol
3360 defined in a shared lib. Leave them alone if
3361 that turns out to be the case. */
3362 expecting_tls_get_addr = 0;
3363 htab->tlsld_got.refcount -= 1;
3364 if (!is_local)
3365 continue;
3366
3367 /* LD -> LE */
3368 tls_set = 0;
3369 tls_clear = TLS_LD;
3370 expecting_tls_get_addr = 1;
3371 break;
3372
3373 case R_PPC_GOT_TLSGD16:
3374 case R_PPC_GOT_TLSGD16_LO:
3375 case R_PPC_GOT_TLSGD16_HI:
3376 case R_PPC_GOT_TLSGD16_HA:
3377 if (is_local)
3378 /* GD -> LE */
3379 tls_set = 0;
3380 else
3381 /* GD -> IE */
3382 tls_set = TLS_TLS | TLS_TPRELGD;
3383 tls_clear = TLS_GD;
3384 expecting_tls_get_addr = 1;
3385 break;
3386
3387 case R_PPC_GOT_TPREL16:
3388 case R_PPC_GOT_TPREL16_LO:
3389 case R_PPC_GOT_TPREL16_HI:
3390 case R_PPC_GOT_TPREL16_HA:
3391 expecting_tls_get_addr = 0;
3392 if (is_local)
3393 {
3394 /* IE -> LE */
3395 tls_set = 0;
3396 tls_clear = TLS_TPREL;
3397 break;
3398 }
3399 else
3400 continue;
3401
3402 case R_PPC_REL14:
3403 case R_PPC_REL14_BRTAKEN:
3404 case R_PPC_REL14_BRNTAKEN:
3405 case R_PPC_REL24:
3406 if (expecting_tls_get_addr
3407 && h != NULL
3408 && h == htab->tls_get_addr)
3409 {
3410 if (h->plt.refcount > 0)
3411 h->plt.refcount -= 1;
3412 }
3413 expecting_tls_get_addr = 0;
3414 continue;
3415
3416 default:
3417 expecting_tls_get_addr = 0;
3418 continue;
7619e7c7 3419 }
25dbc73a
AM		 3420
3421 if (h != NULL)
7619e7c7 3422 {
25dbc73a
AM		 3423 if (tls_set == 0)
3424 {
3425 /* We managed to get rid of a got entry. */
3426 if (h->got.refcount > 0)
3427 h->got.refcount -= 1;
3428 }
3429 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3430 }
3431 else
3432 {
3433 Elf_Internal_Sym *sym;
3434 bfd_signed_vma *lgot_refs;
3435 char *lgot_masks;
3436
3437 if (locsyms == NULL)
3438 {
3439 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3440 if (locsyms == NULL)
3441 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3442 symtab_hdr->sh_info,
3443 0, NULL, NULL, NULL);
3444 if (locsyms == NULL)
3445 {
3446 if (elf_section_data (sec)->relocs != relstart)
3447 free (relstart);
3448 return FALSE;
3449 }
3450 }
3451 sym = locsyms + r_symndx;
3452 lgot_refs = elf_local_got_refcounts (ibfd);
3453 if (lgot_refs == NULL)
3454 abort ();
3455 if (tls_set == 0)
3456 {
3457 /* We managed to get rid of a got entry. */
3458 if (lgot_refs[r_symndx] > 0)
3459 lgot_refs[r_symndx] -= 1;
3460 }
3461 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3462 tls_mask = &lgot_masks[r_symndx];
7619e7c7 3463 }
25dbc73a
AM		 3464
3465 *tls_mask |= tls_set;
3466 *tls_mask &= ~tls_clear;
7619e7c7 3467 }
25dbc73a
AM		 3468
3469 if (elf_section_data (sec)->relocs != relstart)
3470 free (relstart);
7619e7c7 3471 }
25dbc73a
AM		 3472
3473 if (locsyms != NULL
3474 && (symtab_hdr->contents != (unsigned char *) locsyms))
3475 {
3476 if (!info->keep_memory)
3477 free (locsyms);
3478 else
3479 symtab_hdr->contents = (unsigned char *) locsyms;
3480 }
7fce784e 3481 }
25dbc73a
AM		 3482 return TRUE;
3483}
3484\f
3485/* Adjust a symbol defined by a dynamic object and referenced by a
3486 regular object. The current definition is in some section of the
3487 dynamic object, but we're not including those sections. We have to
3488 change the definition to something the rest of the link can
3489 understand. */
7fce784e 3490
25dbc73a
AM		 3491static bfd_boolean
3492ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3493 struct elf_link_hash_entry *h)
3494{
3495 struct ppc_elf_link_hash_table *htab;
3496 asection *s;
3497 unsigned int power_of_two;
7fce784e 3498
25dbc73a
AM		 3499#ifdef DEBUG
3500 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3501 h->root.root.string);
3502#endif
252b5132 3503
25dbc73a
AM		 3504 /* Make sure we know what is going on here. */
3505 htab = ppc_elf_hash_table (info);
3506 BFD_ASSERT (htab->elf.dynobj != NULL
3507 && (h->needs_plt
3508 || h->u.weakdef != NULL
3509 || (h->def_dynamic
3510 && h->ref_regular
3511 && !h->def_regular)));
252b5132 3512
25dbc73a
AM		 3513 /* Deal with function syms. */
3514 if (h->type == STT_FUNC
3515 || h->needs_plt)
3516 {
3517 /* Clear procedure linkage table information for any symbol that
3518 won't need a .plt entry. */
3519 if (h->plt.refcount <= 0
3520 || SYMBOL_CALLS_LOCAL (info, h)
3521 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3522 && h->root.type == bfd_link_hash_undefweak))
252b5132 3523 {
25dbc73a 3524 /* A PLT entry is not required/allowed when:
252b5132 3525
25dbc73a
AM		 3526 1. We are not using ld.so; because then the PLT entry
3527 can't be set up, so we can't use one. In this case,
3528 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 3529
25dbc73a
AM		 3530 2. GC has rendered the entry unused.
3531
3532 3. We know for certain that a call to this symbol
3533 will go to this object, or will remain undefined. */
3534 h->plt.offset = (bfd_vma) -1;
3535 h->needs_plt = 0;
3536 }
3537 return TRUE;
252b5132 3538 }
25dbc73a
AM		 3539 else
3540 h->plt.offset = (bfd_vma) -1;
252b5132 3541
25dbc73a
AM		 3542 /* If this is a weak symbol, and there is a real definition, the
3543 processor independent code will have arranged for us to see the
3544 real definition first, and we can just use the same value. */
3545 if (h->u.weakdef != NULL)
252b5132 3546 {
25dbc73a
AM		 3547 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3548 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3549 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3550 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3551 if (ELIMINATE_COPY_RELOCS)
3552 h->non_got_ref = h->u.weakdef->non_got_ref;
3553 return TRUE;
3554 }
dc810e39 3555
25dbc73a
AM		 3556 /* This is a reference to a symbol defined by a dynamic object which
3557 is not a function. */
252b5132 3558
25dbc73a
AM		 3559 /* If we are creating a shared library, we must presume that the
3560 only references to the symbol are via the global offset table.
3561 For such cases we need not do anything here; the relocations will
3562 be handled correctly by relocate_section. */
3563 if (info->shared)
3564 return TRUE;
252b5132 3565
25dbc73a
AM		 3566 /* If there are no references to this symbol that do not use the
3567 GOT, we don't need to generate a copy reloc. */
3568 if (!h->non_got_ref)
3569 return TRUE;
3570
3571 if (ELIMINATE_COPY_RELOCS)
3572 {
3573 struct ppc_elf_dyn_relocs *p;
3574 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
252b5132 3575 {
25dbc73a
AM		 3576 s = p->sec->output_section;
3577 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3578 break;
252b5132
RH		 3579 }
3580
25dbc73a
AM		 3581 /* If we didn't find any dynamic relocs in read-only sections, then
3582 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3583 if (p == NULL)
252b5132 3584 {
25dbc73a
AM		 3585 h->non_got_ref = 0;
3586 return TRUE;
252b5132
RH		 3587 }
3588 }
3589
25dbc73a
AM		 3590 /* We must allocate the symbol in our .dynbss section, which will
3591 become part of the .bss section of the executable. There will be
3592 an entry for this symbol in the .dynsym section. The dynamic
3593 object will contain position independent code, so all references
3594 from the dynamic object to this symbol will go through the global
3595 offset table. The dynamic linker will use the .dynsym entry to
3596 determine the address it must put in the global offset table, so
3597 both the dynamic object and the regular object will refer to the
3598 same memory location for the variable.
3599
3600 Of course, if the symbol is sufficiently small, we must instead
3601 allocate it in .sbss. FIXME: It would be better to do this if and
3602 only if there were actually SDAREL relocs for that symbol. */
3603
3604 if (h->size <= elf_gp_size (htab->elf.dynobj))
3605 s = htab->dynsbss;
3606 else
3607 s = htab->dynbss;
3608 BFD_ASSERT (s != NULL);
3609
3610 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3611 copy the initial value out of the dynamic object and into the
3612 runtime process image. We need to remember the offset into the
3613 .rela.bss section we are going to use. */
3614 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3615 {
3616 asection *srel;
3617
3618 if (h->size <= elf_gp_size (htab->elf.dynobj))
3619 srel = htab->relsbss;
3620 else
3621 srel = htab->relbss;
3622 BFD_ASSERT (srel != NULL);
3623 srel->size += sizeof (Elf32_External_Rela);
3624 h->needs_copy = 1;
3625 }
7619e7c7 3626
25dbc73a
AM		 3627 /* We need to figure out the alignment required for this symbol. I
3628 have no idea how ELF linkers handle this. */
3629 power_of_two = bfd_log2 (h->size);
3630 if (power_of_two > 4)
3631 power_of_two = 4;
7619e7c7 3632
25dbc73a
AM		 3633 /* Apply the required alignment. */
3634 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3635 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
3636 {
3637 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
7619e7c7 3638 return FALSE;
7619e7c7
AM		 3639 }
3640
25dbc73a
AM		 3641 /* Define the symbol as being at this point in the section. */
3642 h->root.u.def.section = s;
3643 h->root.u.def.value = s->size;
7619e7c7 3644
25dbc73a
AM		 3645 /* Increment the section size to make room for the symbol. */
3646 s->size += h->size;
7619e7c7 3647
25dbc73a
AM		 3648 return TRUE;
3649}
3650\f
3651/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 3652
b34976b6 3653static bfd_boolean
25dbc73a 3654allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 3655{
25dbc73a
AM		 3656 struct bfd_link_info *info = inf;
3657 struct ppc_elf_link_hash_entry *eh;
7619e7c7 3658 struct ppc_elf_link_hash_table *htab;
25dbc73a 3659 struct ppc_elf_dyn_relocs *p;
252b5132 3660
25dbc73a 3661 if (h->root.type == bfd_link_hash_indirect)
b34976b6 3662 return TRUE;
252b5132 3663
25dbc73a
AM		 3664 if (h->root.type == bfd_link_hash_warning)
3665 /* When warning symbols are created, they **replace** the "real"
3666 entry in the hash table, thus we never get to see the real
3667 symbol in a hash traversal. So look at it now. */
3668 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 3669
7619e7c7 3670 htab = ppc_elf_hash_table (info);
25dbc73a
AM		 3671 if (htab->elf.dynamic_sections_created
3672 && h->plt.refcount > 0)
252b5132 3673 {
25dbc73a
AM		 3674 /* Make sure this symbol is output as a dynamic symbol. */
3675 if (h->dynindx == -1
3676 && !h->forced_local)
252b5132 3677 {
25dbc73a
AM		 3678 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3679 return FALSE;
252b5132
RH		 3680 }
3681
25dbc73a
AM		 3682 if (info->shared
3683 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
252b5132 3684 {
25dbc73a 3685 asection *s = htab->plt;
7619e7c7 3686
25dbc73a
AM		 3687 /* If this is the first .plt entry, make room for the special
3688 first entry. */
3689 if (s->size == 0)
3690 s->size += PLT_INITIAL_ENTRY_SIZE;
7619e7c7 3691
25dbc73a
AM		 3692 /* The PowerPC PLT is actually composed of two parts, the
3693 first part is 2 words (for a load and a jump), and then
3694 there is a remaining word available at the end. */
3695 h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
3696 + (PLT_SLOT_SIZE
3697 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
3698 / PLT_ENTRY_SIZE)));
7619e7c7 3699
25dbc73a
AM		 3700 /* If this symbol is not defined in a regular file, and we
3701 are not generating a shared library, then set the symbol
3702 to this location in the .plt. This is required to make
3703 function pointers compare as equal between the normal
3704 executable and the shared library. */
3705 if (! info->shared
3706 && !h->def_regular)
252b5132 3707 {
25dbc73a
AM		 3708 h->root.u.def.section = s;
3709 h->root.u.def.value = h->plt.offset;
252b5132 3710 }
252b5132 3711
25dbc73a
AM		 3712 /* Make room for this entry. After the 8192nd entry, room
3713 for two entries is allocated. */
3714 s->size += PLT_ENTRY_SIZE;
3715 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
3716 > PLT_NUM_SINGLE_ENTRIES)
3717 s->size += PLT_ENTRY_SIZE;
3718
3719 /* We also need to make an entry in the .rela.plt section. */
3720 htab->relplt->size += sizeof (Elf32_External_Rela);
3721 }
3722 else
3723 {
3724 h->plt.offset = (bfd_vma) -1;
3725 h->needs_plt = 0;
3726 }
3727 }
3728 else
3729 {
3730 h->plt.offset = (bfd_vma) -1;
3731 h->needs_plt = 0;
3732 }
3733
3734 eh = (struct ppc_elf_link_hash_entry *) h;
3735 if (eh->elf.got.refcount > 0)
3736 {
3737 /* Make sure this symbol is output as a dynamic symbol. */
3738 if (eh->elf.dynindx == -1
3739 && !eh->elf.forced_local)
3740 {
3741 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 3742 return FALSE;
25dbc73a 3743 }
252b5132 3744
25dbc73a
AM		 3745 if (eh->tls_mask == (TLS_TLS | TLS_LD)
3746 && !eh->elf.def_dynamic)
3747 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3748 eh->elf.got.offset = (bfd_vma) -1;
3749 else
3750 {
3751 bfd_boolean dyn;
3752 eh->elf.got.offset = htab->got->size;
3753 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 3754 {
25dbc73a
AM		 3755 if ((eh->tls_mask & TLS_LD) != 0)
3756 htab->got->size += 8;
3757 if ((eh->tls_mask & TLS_GD) != 0)
3758 htab->got->size += 8;
3759 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3760 htab->got->size += 4;
3761 if ((eh->tls_mask & TLS_DTPREL) != 0)
3762 htab->got->size += 4;
252b5132 3763 }
25dbc73a
AM		 3764 else
3765 htab->got->size += 4;
3766 dyn = htab->elf.dynamic_sections_created;
3767 if ((info->shared
3768 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
3769 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
3770 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 3771 {
25dbc73a
AM		 3772 /* All the entries we allocated need relocs. */
3773 htab->relgot->size
3774 += ((htab->got->size - eh->elf.got.offset) / 4
3775 * sizeof (Elf32_External_Rela));
3776 /* Except LD only needs one. */
3777 if ((eh->tls_mask & TLS_LD) != 0)
3778 htab->relgot->size -= sizeof (Elf32_External_Rela);
252b5132 3779 }
25dbc73a
AM		 3780 }
3781 }
3782 else
3783 eh->elf.got.offset = (bfd_vma) -1;
252b5132 3784
25dbc73a
AM		 3785 if (eh->dyn_relocs == NULL)
3786 return TRUE;
252b5132 3787
25dbc73a
AM		 3788 /* In the shared -Bsymbolic case, discard space allocated for
3789 dynamic pc-relative relocs against symbols which turn out to be
3790 defined in regular objects. For the normal shared case, discard
3791 space for relocs that have become local due to symbol visibility
3792 changes. */
3793
3794 if (info->shared)
3795 {
3796 /* Relocs that use pc_count are those that appear on a call insn,
3797 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3798 generated via assembly. We want calls to protected symbols to
3799 resolve directly to the function rather than going via the plt.
3800 If people want function pointer comparisons to work as expected
3801 then they should avoid writing weird assembly. */
3802 if (SYMBOL_CALLS_LOCAL (info, h))
3803 {
3804 struct ppc_elf_dyn_relocs **pp;
3805
3806 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 3807 {
25dbc73a
AM		 3808 p->count -= p->pc_count;
3809 p->pc_count = 0;
3810 if (p->count == 0)
3811 *pp = p->next;
3812 else
3813 pp = &p->next;
252b5132 3814 }
25dbc73a 3815 }
252b5132 3816
25dbc73a
AM		 3817 /* Also discard relocs on undefined weak syms with non-default
3818 visibility. */
3819 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3820 && h->root.type == bfd_link_hash_undefweak)
3821 eh->dyn_relocs = NULL;
7619e7c7 3822
25dbc73a
AM		 3823 /* Make sure undefined weak symbols are output as a dynamic symbol
3824 in PIEs. */
3825 if (info->pie
3826 && eh->dyn_relocs != NULL
3827 && h->dynindx == -1
3828 && h->root.type == bfd_link_hash_undefweak
3829 && !h->forced_local)
3830 {
3831 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3832 return FALSE;
3833 }
3834 }
3835 else if (ELIMINATE_COPY_RELOCS)
3836 {
3837 /* For the non-shared case, discard space for relocs against
3838 symbols which turn out to need copy relocs or are not
3839 dynamic. */
7619e7c7 3840
25dbc73a
AM		 3841 if (!h->non_got_ref
3842 && h->def_dynamic
3843 && !h->def_regular)
3844 {
3845 /* Make sure this symbol is output as a dynamic symbol.
3846 Undefined weak syms won't yet be marked as dynamic. */
3847 if (h->dynindx == -1
3848 && !h->forced_local)
3849 {
3850 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3851 return FALSE;
3852 }
7619e7c7 3853
25dbc73a
AM		 3854 /* If that succeeded, we know we'll be keeping all the
3855 relocs. */
3856 if (h->dynindx != -1)
3857 goto keep;
3858 }
252b5132 3859
25dbc73a 3860 eh->dyn_relocs = NULL;
252b5132 3861
25dbc73a
AM		 3862 keep: ;
3863 }
252b5132 3864
25dbc73a
AM		 3865 /* Finally, allocate space. */
3866 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3867 {
3868 asection *sreloc = elf_section_data (p->sec)->sreloc;
3869 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3870 }
252b5132 3871
25dbc73a
AM		 3872 return TRUE;
3873}
7619e7c7 3874
25dbc73a 3875/* Find any dynamic relocs that apply to read-only sections. */
7619e7c7 3876
25dbc73a
AM		 3877static bfd_boolean
3878readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
3879{
3880 struct ppc_elf_dyn_relocs *p;
7619e7c7 3881
25dbc73a
AM		 3882 if (h->root.type == bfd_link_hash_indirect)
3883 return TRUE;
252b5132 3884
25dbc73a
AM		 3885 if (h->root.type == bfd_link_hash_warning)
3886 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 3887
25dbc73a
AM		 3888 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3889 {
3890 asection *s = p->sec->output_section;
ee05f2fe 3891
25dbc73a
AM		 3892 if (s != NULL
3893 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
3894 == (SEC_READONLY | SEC_ALLOC)))
3895 {
3896 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 3897
25dbc73a
AM		 3898 /* Not an error, just cut short the traversal. */
3899 return FALSE;
3900 }
3901 }
3902 return TRUE;
3903}
3904
3905/* Set the sizes of the dynamic sections. */
3906
3907static bfd_boolean
3908ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3909 struct bfd_link_info *info)
3910{
3911 struct ppc_elf_link_hash_table *htab;
3912 asection *s;
3913 bfd_boolean relocs;
3914 bfd *ibfd;
7fce784e 3915
252b5132 3916#ifdef DEBUG
25dbc73a 3917 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 3918#endif
252b5132 3919
25dbc73a
AM		 3920 htab = ppc_elf_hash_table (info);
3921 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 3922
25dbc73a
AM		 3923 if (elf_hash_table (info)->dynamic_sections_created)
3924 {
3925 /* Set the contents of the .interp section to the interpreter. */
3926 if (info->executable)
3927 {
3928 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
3929 BFD_ASSERT (s != NULL);
3930 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3931 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3932 }
3933 }
252b5132 3934
25dbc73a
AM		 3935 if (htab->tlsld_got.refcount > 0)
3936 {
3937 htab->tlsld_got.offset = htab->got->size;
3938 htab->got->size += 8;
3939 if (info->shared)
3940 htab->relgot->size += sizeof (Elf32_External_Rela);
3941 }
3942 else
3943 htab->tlsld_got.offset = (bfd_vma) -1;
252b5132 3944
25dbc73a
AM		 3945 /* Set up .got offsets for local syms, and space for local dynamic
3946 relocs. */
3947 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3948 {
3949 bfd_signed_vma *local_got;
3950 bfd_signed_vma *end_local_got;
3951 char *lgot_masks;
3952 bfd_size_type locsymcount;
3953 Elf_Internal_Shdr *symtab_hdr;
3954 asection *srel;
7fce784e 3955
d2663f46 3956 if (!is_ppc_elf_target (ibfd->xvec))
25dbc73a 3957 continue;
7fce784e 3958
25dbc73a
AM		 3959 for (s = ibfd->sections; s != NULL; s = s->next)
3960 {
3961 struct ppc_elf_dyn_relocs *p;
252b5132 3962
25dbc73a
AM		 3963 for (p = ((struct ppc_elf_dyn_relocs *)
3964 elf_section_data (s)->local_dynrel);
3965 p != NULL;
3966 p = p->next)
3967 {
3968 if (!bfd_is_abs_section (p->sec)
3969 && bfd_is_abs_section (p->sec->output_section))
3970 {
3971 /* Input section has been discarded, either because
3972 it is a copy of a linkonce section or due to
3973 linker script /DISCARD/, so we'll be discarding
3974 the relocs too. */
7fce784e 3975 }
25dbc73a 3976 else if (p->count != 0)
7fce784e 3977 {
25dbc73a
AM		 3978 elf_section_data (p->sec)->sreloc->size
3979 += p->count * sizeof (Elf32_External_Rela);
3980 if ((p->sec->output_section->flags
3981 & (SEC_READONLY | SEC_ALLOC))
3982 == (SEC_READONLY | SEC_ALLOC))
3983 info->flags |= DF_TEXTREL;
7fce784e 3984 }
252b5132 3985 }
252b5132 3986 }
252b5132 3987
25dbc73a
AM		 3988 local_got = elf_local_got_refcounts (ibfd);
3989 if (!local_got)
3990 continue;
252b5132 3991
25dbc73a
AM		 3992 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3993 locsymcount = symtab_hdr->sh_info;
3994 end_local_got = local_got + locsymcount;
3995 lgot_masks = (char *) end_local_got;
3996 s = htab->got;
3997 srel = htab->relgot;
3998 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
3999 if (*local_got > 0)
4000 {
4001 if (*lgot_masks == (TLS_TLS | TLS_LD))
4002 {
4003 /* If just an LD reloc, we'll just use
4004 htab->tlsld_got.offset. */
4005 if (htab->tlsld_got.offset == (bfd_vma) -1)
4006 {
4007 htab->tlsld_got.offset = s->size;
4008 s->size += 8;
4009 if (info->shared)
4010 srel->size += sizeof (Elf32_External_Rela);
4011 }
4012 *local_got = (bfd_vma) -1;
4013 }
4014 else
4015 {
4016 *local_got = s->size;
4017 if ((*lgot_masks & TLS_TLS) != 0)
4018 {
4019 if ((*lgot_masks & TLS_GD) != 0)
4020 s->size += 8;
4021 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4022 s->size += 4;
4023 if ((*lgot_masks & TLS_DTPREL) != 0)
4024 s->size += 4;
4025 }
4026 else
4027 s->size += 4;
4028 if (info->shared)
4029 srel->size += ((s->size - *local_got) / 4
4030 * sizeof (Elf32_External_Rela));
4031 }
4032 }
4033 else
4034 *local_got = (bfd_vma) -1;
4035 }
252b5132 4036
25dbc73a
AM		 4037 /* Allocate space for global sym dynamic relocs. */
4038 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4039
4040 /* We've now determined the sizes of the various dynamic sections.
4041 Allocate memory for them. */
4042 relocs = FALSE;
4043 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 4044 {
25dbc73a
AM		 4045 if ((s->flags & SEC_LINKER_CREATED) == 0)
4046 continue;
252b5132 4047
25dbc73a 4048 if (s == htab->plt
644285ef
AM		 4049 || s == htab->got
4050 || s == htab->sbss)
25dbc73a
AM		 4051 {
4052 /* Strip this section if we don't need it; see the
4053 comment below. */
4054 }
c9a2f333
AM		 4055 else if (s == htab->sdata[0].section
4056 || s == htab->sdata[1].section)
25dbc73a 4057 {
c9a2f333 4058 /* Strip these too. */
25dbc73a
AM		 4059 }
4060 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4061 {
4062 if (s->size == 0)
252b5132 4063 {
25dbc73a
AM		 4064 /* If we don't need this section, strip it from the
4065 output file. This is mostly to handle .rela.bss and
4066 .rela.plt. We must create both sections in
4067 create_dynamic_sections, because they must be created
4068 before the linker maps input sections to output
4069 sections. The linker does that before
4070 adjust_dynamic_symbol is called, and it is that
4071 function which decides whether anything needs to go
4072 into these sections. */
4073 }
4074 else
4075 {
4076 /* Remember whether there are any relocation sections. */
4077 relocs = TRUE;
252b5132 4078
25dbc73a
AM		 4079 /* We use the reloc_count field as a counter if we need
4080 to copy relocs into the output file. */
4081 s->reloc_count = 0;
252b5132
RH		 4082 }
4083 }
25dbc73a
AM		 4084 else
4085 {
4086 /* It's not one of our sections, so don't allocate space. */
4087 continue;
4088 }
252b5132 4089
25dbc73a
AM		 4090 if (s->size == 0)
4091 {
8423293d 4092 s->flags |= SEC_EXCLUDE;
25dbc73a
AM		 4093 continue;
4094 }
7fce784e 4095
644285ef
AM		 4096 if (s == htab->sbss)
4097 continue;
4098
25dbc73a
AM		 4099 /* Allocate memory for the section contents. */
4100 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4101 if (s->contents == NULL)
4102 return FALSE;
4103 }
252b5132 4104
25dbc73a 4105 if (htab->elf.dynamic_sections_created)
7619e7c7 4106 {
25dbc73a
AM		 4107 /* Add some entries to the .dynamic section. We fill in the
4108 values later, in ppc_elf_finish_dynamic_sections, but we
4109 must add the entries now so that we get the correct size for
4110 the .dynamic section. The DT_DEBUG entry is filled in by the
4111 dynamic linker and used by the debugger. */
4112#define add_dynamic_entry(TAG, VAL) \
4113 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 4114
25dbc73a 4115 if (info->executable)
7619e7c7 4116 {
25dbc73a
AM		 4117 if (!add_dynamic_entry (DT_DEBUG, 0))
4118 return FALSE;
7619e7c7
AM		 4119 }
4120
25dbc73a 4121 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 4122 {
25dbc73a
AM		 4123 if (!add_dynamic_entry (DT_PLTGOT, 0)
4124 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4125 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4126 || !add_dynamic_entry (DT_JMPREL, 0))
4127 return FALSE;
4128 }
7619e7c7 4129
25dbc73a
AM		 4130 if (relocs)
4131 {
4132 if (!add_dynamic_entry (DT_RELA, 0)
4133 || !add_dynamic_entry (DT_RELASZ, 0)
4134 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4135 return FALSE;
4136 }
7619e7c7 4137
25dbc73a
AM		 4138 /* If any dynamic relocs apply to a read-only section, then we
4139 need a DT_TEXTREL entry. */
4140 if ((info->flags & DF_TEXTREL) == 0)
4141 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4142 info);
7619e7c7 4143
25dbc73a
AM		 4144 if ((info->flags & DF_TEXTREL) != 0)
4145 {
4146 if (!add_dynamic_entry (DT_TEXTREL, 0))
4147 return FALSE;
7619e7c7
AM		 4148 }
4149 }
25dbc73a
AM		 4150#undef add_dynamic_entry
4151
7619e7c7
AM		 4152 return TRUE;
4153}
25dbc73a
AM		 4154\f
4155#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4156
4157static const int shared_stub_entry[] =
4158 {
4159 0x7c0802a6, /* mflr 0 */
4160 0x429f0005, /* bcl 20, 31, .Lxxx */
4161 0x7d6802a6, /* mflr 11 */
4162 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4163 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4164 0x7c0803a6, /* mtlr 0 */
4165 0x7d6903a6, /* mtctr 11 */
4166 0x4e800420, /* bctr */
4167 };
4168
4169static const int stub_entry[] =
4170 {
4171 0x3d600000, /* lis 11,xxx@ha */
4172 0x396b0000, /* addi 11,11,xxx@l */
4173 0x7d6903a6, /* mtctr 11 */
4174 0x4e800420, /* bctr */
4175 };
4176
4177static bfd_boolean
4178ppc_elf_relax_section (bfd *abfd,
4179 asection *isec,
4180 struct bfd_link_info *link_info,
4181 bfd_boolean *again)
4182{
4183 struct one_fixup
4184 {
4185 struct one_fixup *next;
4186 asection *tsec;
4187 bfd_vma toff;
4188 bfd_vma trampoff;
4189 };
7619e7c7 4190
25dbc73a
AM		 4191 Elf_Internal_Shdr *symtab_hdr;
4192 bfd_byte *contents = NULL;
4193 Elf_Internal_Sym *isymbuf = NULL;
4194 Elf_Internal_Rela *internal_relocs = NULL;
4195 Elf_Internal_Rela *irel, *irelend;
4196 struct one_fixup *fixups = NULL;
4197 bfd_boolean changed;
4198 struct ppc_elf_link_hash_table *ppc_info;
4199 bfd_size_type trampoff;
7619e7c7 4200
25dbc73a 4201 *again = FALSE;
7619e7c7 4202
c87b5a93
AM		 4203 /* Nothing to do if there are no relocations, and no need to do
4204 anything with non-alloc sections. */
4205 if ((isec->flags & SEC_ALLOC) == 0
4206 || (isec->flags & SEC_RELOC) == 0
4207 || isec->reloc_count == 0)
25dbc73a 4208 return TRUE;
7619e7c7 4209
25dbc73a
AM		 4210 trampoff = (isec->size + 3) & (bfd_vma) -4;
4211 /* Space for a branch around any trampolines. */
4212 trampoff += 4;
7619e7c7 4213
25dbc73a 4214 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7619e7c7 4215
25dbc73a
AM		 4216 /* Get a copy of the native relocations. */
4217 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4218 link_info->keep_memory);
4219 if (internal_relocs == NULL)
4220 goto error_return;
7619e7c7 4221
25dbc73a
AM		 4222 ppc_info = ppc_elf_hash_table (link_info);
4223 irelend = internal_relocs + isec->reloc_count;
7619e7c7 4224
25dbc73a 4225 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 4226 {
25dbc73a
AM		 4227 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4228 bfd_vma symaddr, reladdr, toff, roff;
4229 asection *tsec;
4230 struct one_fixup *f;
4231 size_t insn_offset = 0;
4232 bfd_vma max_branch_offset, val;
4233 bfd_byte *hit_addr;
4234 unsigned long t0;
4235 unsigned char sym_type;
7619e7c7 4236
25dbc73a
AM		 4237 switch (r_type)
4238 {
4239 case R_PPC_REL24:
4240 case R_PPC_LOCAL24PC:
4241 case R_PPC_PLTREL24:
4242 max_branch_offset = 1 << 25;
4243 break;
7619e7c7 4244
25dbc73a
AM		 4245 case R_PPC_REL14:
4246 case R_PPC_REL14_BRTAKEN:
4247 case R_PPC_REL14_BRNTAKEN:
4248 max_branch_offset = 1 << 15;
4249 break;
7619e7c7 4250
25dbc73a
AM		 4251 default:
4252 continue;
4253 }
7619e7c7 4254
25dbc73a
AM		 4255 /* Get the value of the symbol referred to by the reloc. */
4256 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4257 {
4258 /* A local symbol. */
4259 Elf_Internal_Sym *isym;
7fce784e 4260
25dbc73a
AM		 4261 /* Read this BFD's local symbols. */
4262 if (isymbuf == NULL)
4263 {
4264 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4265 if (isymbuf == NULL)
4266 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4267 symtab_hdr->sh_info, 0,
4268 NULL, NULL, NULL);
4269 if (isymbuf == 0)
4270 goto error_return;
4271 }
4272 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4273 if (isym->st_shndx == SHN_UNDEF)
4274 continue; /* We can't do anything with undefined symbols. */
4275 else if (isym->st_shndx == SHN_ABS)
4276 tsec = bfd_abs_section_ptr;
4277 else if (isym->st_shndx == SHN_COMMON)
4278 tsec = bfd_com_section_ptr;
4279 else
4280 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 4281
25dbc73a
AM		 4282 toff = isym->st_value;
4283 sym_type = ELF_ST_TYPE (isym->st_info);
4284 }
4285 else
4286 {
4287 /* Global symbol handling. */
4288 unsigned long indx;
4289 struct elf_link_hash_entry *h;
7619e7c7 4290
25dbc73a
AM		 4291 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4292 h = elf_sym_hashes (abfd)[indx];
7619e7c7 4293
25dbc73a
AM		 4294 while (h->root.type == bfd_link_hash_indirect
4295 || h->root.type == bfd_link_hash_warning)
4296 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 4297
25dbc73a
AM		 4298 if (r_type == R_PPC_PLTREL24
4299 && ppc_info->plt != NULL
4300 && h->plt.offset != (bfd_vma) -1)
4301 {
4302 tsec = ppc_info->plt;
4303 toff = h->plt.offset;
4304 }
4305 else if (h->root.type == bfd_link_hash_defined
4306 || h->root.type == bfd_link_hash_defweak)
4307 {
4308 tsec = h->root.u.def.section;
4309 toff = h->root.u.def.value;
4310 }
4311 else
4312 continue;
7619e7c7 4313
25dbc73a
AM		 4314 sym_type = h->type;
4315 }
7619e7c7 4316
25dbc73a
AM		 4317 /* If the branch and target are in the same section, you have
4318 no hope of adding stubs. We'll error out later should the
4319 branch overflow. */
4320 if (tsec == isec)
4321 continue;
4322
4323 /* There probably isn't any reason to handle symbols in
4324 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4325 attribute for a code section, and we are only looking at
4326 branches. However, implement it correctly here as a
4327 reference for other target relax_section functions. */
4328 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4329 {
4330 /* At this stage in linking, no SEC_MERGE symbol has been
4331 adjusted, so all references to such symbols need to be
4332 passed through _bfd_merged_section_offset. (Later, in
4333 relocate_section, all SEC_MERGE symbols *except* for
4334 section symbols have been adjusted.)
4335
4336 gas may reduce relocations against symbols in SEC_MERGE
4337 sections to a relocation against the section symbol when
4338 the original addend was zero. When the reloc is against
4339 a section symbol we should include the addend in the
4340 offset passed to _bfd_merged_section_offset, since the
4341 location of interest is the original symbol. On the
4342 other hand, an access to "sym+addend" where "sym" is not
4343 a section symbol should not include the addend; Such an
4344 access is presumed to be an offset from "sym"; The
4345 location of interest is just "sym". */
4346 if (sym_type == STT_SECTION)
4347 toff += irel->r_addend;
7619e7c7 4348
25dbc73a
AM		 4349 toff = _bfd_merged_section_offset (abfd, &tsec,
4350 elf_section_data (tsec)->sec_info,
4351 toff);
7619e7c7 4352
25dbc73a
AM		 4353 if (sym_type != STT_SECTION)
4354 toff += irel->r_addend;
4355 }
4356 else
4357 toff += irel->r_addend;
7619e7c7 4358
25dbc73a 4359 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 4360
25dbc73a
AM		 4361 roff = irel->r_offset;
4362 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 4363
25dbc73a
AM		 4364 /* If the branch is in range, no need to do anything. */
4365 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4366 continue;
252b5132 4367
25dbc73a
AM		 4368 /* Look for an existing fixup to this address. */
4369 for (f = fixups; f ; f = f->next)
4370 if (f->tsec == tsec && f->toff == toff)
4371 break;
4372
4373 if (f == NULL)
7619e7c7 4374 {
25dbc73a
AM		 4375 size_t size;
4376 unsigned long stub_rtype;
252b5132 4377
25dbc73a
AM		 4378 val = trampoff - roff;
4379 if (val >= max_branch_offset)
4380 /* Oh dear, we can't reach a trampoline. Don't try to add
4381 one. We'll report an error later. */
4382 continue;
252b5132 4383
25dbc73a
AM		 4384 if (link_info->shared)
4385 {
4386 size = 4 * ARRAY_SIZE (shared_stub_entry);
4387 insn_offset = 12;
4388 stub_rtype = R_PPC_RELAX32PC;
4389 }
4390 else
4391 {
4392 size = 4 * ARRAY_SIZE (stub_entry);
4393 insn_offset = 0;
4394 stub_rtype = R_PPC_RELAX32;
4395 }
dc810e39 4396
25dbc73a
AM		 4397 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4398 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4399 abort ();
4400 if (tsec == ppc_info->plt)
4401 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 4402
25dbc73a
AM		 4403 /* Hijack the old relocation. Since we need two
4404 relocations for this use a "composite" reloc. */
4405 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4406 stub_rtype);
4407 irel->r_offset = trampoff + insn_offset;
252b5132 4408
25dbc73a
AM		 4409 /* Record the fixup so we don't do it again this section. */
4410 f = bfd_malloc (sizeof (*f));
4411 f->next = fixups;
4412 f->tsec = tsec;
4413 f->toff = toff;
4414 f->trampoff = trampoff;
4415 fixups = f;
252b5132 4416
25dbc73a
AM		 4417 trampoff += size;
4418 }
4419 else
4420 {
4421 val = f->trampoff - roff;
4422 if (val >= max_branch_offset)
4423 continue;
252b5132 4424
25dbc73a
AM		 4425 /* Nop out the reloc, since we're finalizing things here. */
4426 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4427 }
252b5132 4428
25dbc73a
AM		 4429 /* Get the section contents. */
4430 if (contents == NULL)
4431 {
4432 /* Get cached copy if it exists. */
4433 if (elf_section_data (isec)->this_hdr.contents != NULL)
4434 contents = elf_section_data (isec)->this_hdr.contents;
4435 else
4436 {
4437 /* Go get them off disk. */
4438 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4439 goto error_return;
4440 }
4441 }
252b5132 4442
25dbc73a
AM		 4443 /* Fix up the existing branch to hit the trampoline. */
4444 hit_addr = contents + roff;
4445 switch (r_type)
4446 {
4447 case R_PPC_REL24:
4448 case R_PPC_LOCAL24PC:
4449 case R_PPC_PLTREL24:
4450 t0 = bfd_get_32 (abfd, hit_addr);
4451 t0 &= ~0x3fffffc;
4452 t0 |= val & 0x3fffffc;
4453 bfd_put_32 (abfd, t0, hit_addr);
4454 break;
252b5132 4455
25dbc73a
AM		 4456 case R_PPC_REL14:
4457 case R_PPC_REL14_BRTAKEN:
4458 case R_PPC_REL14_BRNTAKEN:
4459 t0 = bfd_get_32 (abfd, hit_addr);
4460 t0 &= ~0xfffc;
4461 t0 |= val & 0xfffc;
4462 bfd_put_32 (abfd, t0, hit_addr);
4463 break;
4464 }
4465 }
252b5132 4466
25dbc73a
AM		 4467 /* Write out the trampolines. */
4468 changed = fixups != NULL;
4469 if (fixups != NULL)
4470 {
4471 const int *stub;
4472 bfd_byte *dest;
4473 bfd_vma val;
4474 int i, size;
252b5132 4475
25dbc73a
AM		 4476 do
4477 {
4478 struct one_fixup *f = fixups;
4479 fixups = fixups->next;
4480 free (f);
4481 }
4482 while (fixups);
252b5132 4483
25dbc73a
AM		 4484 contents = bfd_realloc (contents, trampoff);
4485 if (contents == NULL)
4486 goto error_return;
252b5132 4487
25dbc73a
AM		 4488 isec->size = (isec->size + 3) & (bfd_vma) -4;
4489 /* Branch around the trampolines. */
4490 val = trampoff - isec->size + 0x48000000;
4491 dest = contents + isec->size;
4492 isec->size = trampoff;
4493 bfd_put_32 (abfd, val, dest);
4494 dest += 4;
252b5132 4495
25dbc73a
AM		 4496 if (link_info->shared)
4497 {
4498 stub = shared_stub_entry;
4499 size = ARRAY_SIZE (shared_stub_entry);
4500 }
4501 else
4502 {
4503 stub = stub_entry;
4504 size = ARRAY_SIZE (stub_entry);
4505 }
252b5132 4506
25dbc73a
AM		 4507 i = 0;
4508 while (dest < contents + trampoff)
252b5132 4509 {
25dbc73a
AM		 4510 bfd_put_32 (abfd, stub[i], dest);
4511 i++;
4512 if (i == size)
4513 i = 0;
4514 dest += 4;
252b5132 4515 }
25dbc73a 4516 BFD_ASSERT (i == 0);
252b5132
RH		 4517 }
4518
25dbc73a
AM		 4519 if (isymbuf != NULL
4520 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 4521 {
25dbc73a
AM		 4522 if (! link_info->keep_memory)
4523 free (isymbuf);
252b5132 4524 else
25dbc73a
AM		 4525 {
4526 /* Cache the symbols for elf_link_input_bfd. */
4527 symtab_hdr->contents = (unsigned char *) isymbuf;
4528 }
252b5132
RH		 4529 }
4530
25dbc73a
AM		 4531 if (contents != NULL
4532 && elf_section_data (isec)->this_hdr.contents != contents)
4533 {
4534 if (!changed && !link_info->keep_memory)
4535 free (contents);
4536 else
4537 {
4538 /* Cache the section contents for elf_link_input_bfd. */
4539 elf_section_data (isec)->this_hdr.contents = contents;
4540 }
4541 }
252b5132 4542
25dbc73a
AM		 4543 if (elf_section_data (isec)->relocs != internal_relocs)
4544 {
4545 if (!changed)
4546 free (internal_relocs);
4547 else
4548 elf_section_data (isec)->relocs = internal_relocs;
4549 }
252b5132 4550
25dbc73a 4551 *again = changed;
b34976b6 4552 return TRUE;
25dbc73a
AM		 4553
4554 error_return:
4555 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
4556 free (isymbuf);
4557 if (contents != NULL
4558 && elf_section_data (isec)->this_hdr.contents != contents)
4559 free (contents);
4560 if (internal_relocs != NULL
4561 && elf_section_data (isec)->relocs != internal_relocs)
4562 free (internal_relocs);
4563 return FALSE;
252b5132 4564}
252b5132 4565\f
f85f57ad
AM		 4566/* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
4567 set here rather than via PROVIDE in the default linker script,
4568 because using PROVIDE inside an output section statement results in
4569 unnecessary output sections. Using PROVIDE outside an output section
4570 statement runs the risk of section alignment affecting where the
4571 section starts. */
c9a2f333
AM		 4572
4573bfd_boolean
4574ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
4575{
4576 struct ppc_elf_link_hash_table *htab;
4577 unsigned i;
f85f57ad
AM		 4578 asection *s;
4579 bfd_vma val;
c9a2f333
AM		 4580
4581 htab = ppc_elf_hash_table (info);
4582
4583 for (i = 0; i < 2; i++)
4584 {
4585 elf_linker_section_t *lsect = &htab->sdata[i];
c9a2f333
AM		 4586
4587 s = lsect->section;
4588 if (s != NULL)
4589 s = s->output_section;
4590 if (s == NULL)
4591 s = bfd_get_section_by_name (obfd, lsect->name);
4592 if (s == NULL)
4593 s = bfd_get_section_by_name (obfd, lsect->bss_name);
4594
4595 val = 0;
4596 if (s != NULL)
4597 val = s->vma + 32768;
4598 lsect->sym_val = val;
4599
81e1b023 4600 _bfd_elf_provide_symbol (info, lsect->sym_name, val);
c9a2f333 4601 }
f85f57ad
AM		 4602
4603 s = bfd_get_section_by_name (obfd, ".sbss");
4604 val = 0;
4605 if (s != NULL)
4606 val = s->vma;
81e1b023
L		 4607 _bfd_elf_provide_symbol (info, "__sbss_start", val);
4608 _bfd_elf_provide_symbol (info, "___sbss_start", val);
f85f57ad
AM		 4609 if (s != NULL)
4610 val += s->size;
81e1b023
L		 4611 _bfd_elf_provide_symbol (info, "__sbss_end", val);
4612 _bfd_elf_provide_symbol (info, "___sbss_end", val);
c9a2f333
AM		 4613 return TRUE;
4614}
4615\f
25dbc73a 4616/* Fill in the address for a pointer generated in a linker section. */
252b5132 4617
25dbc73a 4618static bfd_vma
76750a2f 4619elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM		 4620 elf_linker_section_t *lsect,
4621 struct elf_link_hash_entry *h,
4622 bfd_vma relocation,
2bb04cf2 4623 const Elf_Internal_Rela *rel)
25dbc73a
AM		 4624{
4625 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 4626
25dbc73a 4627 BFD_ASSERT (lsect != NULL);
252b5132 4628
25dbc73a 4629 if (h != NULL)
252b5132 4630 {
25dbc73a
AM		 4631 /* Handle global symbol. */
4632 struct ppc_elf_link_hash_entry *eh;
252b5132 4633
25dbc73a 4634 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM		 4635 BFD_ASSERT (eh->elf.def_regular);
4636 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM		 4637 }
4638 else
4639 {
4640 /* Handle local symbol. */
4641 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 4642
25dbc73a 4643 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM		 4644 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
4645 }
252b5132 4646
76750a2f
AM		 4647 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
4648 rel->r_addend,
4649 lsect);
4650 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 4651
76750a2f
AM		 4652 /* Offset will always be a multiple of four, so use the bottom bit
4653 as a "written" flag. */
4654 if ((linker_section_ptr->offset & 1) == 0)
4655 {
4656 bfd_put_32 (lsect->section->owner,
4657 relocation + linker_section_ptr->addend,
4658 lsect->section->contents + linker_section_ptr->offset);
4659 linker_section_ptr->offset += 1;
252b5132
RH		 4660 }
4661
25dbc73a 4662 relocation = (lsect->section->output_offset
76750a2f 4663 + linker_section_ptr->offset - 1
c9a2f333 4664 - 0x8000);
252b5132 4665
25dbc73a
AM		 4666#ifdef DEBUG
4667 fprintf (stderr,
4668 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
4669 lsect->name, (long) relocation, (long) relocation);
4670#endif
252b5132 4671
25dbc73a
AM		 4672 /* Subtract out the addend, because it will get added back in by the normal
4673 processing. */
4674 return relocation - linker_section_ptr->addend;
252b5132 4675}
25dbc73a 4676
252b5132
RH		 4677/* The RELOCATE_SECTION function is called by the ELF backend linker
4678 to handle the relocations for a section.
4679
4680 The relocs are always passed as Rela structures; if the section
4681 actually uses Rel structures, the r_addend field will always be
4682 zero.
4683
4684 This function is responsible for adjust the section contents as
4685 necessary, and (if using Rela relocs and generating a
1049f94e 4686 relocatable output file) adjusting the reloc addend as
252b5132
RH		 4687 necessary.
4688
4689 This function does not have to worry about setting the reloc
4690 address or the reloc symbol index.
4691
4692 LOCAL_SYMS is a pointer to the swapped in local symbols.
4693
4694 LOCAL_SECTIONS is an array giving the section in the input file
4695 corresponding to the st_shndx field of each local symbol.
4696
4697 The global hash table entry for the global symbols can be found
4698 via elf_sym_hashes (input_bfd).
4699
1049f94e 4700 When generating relocatable output, this function must handle
252b5132
RH		 4701 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4702 going to be the section symbol corresponding to the output
4703 section, which means that the addend must be adjusted
4704 accordingly. */
4705
b34976b6 4706static bfd_boolean
55fd94b0
AM		 4707ppc_elf_relocate_section (bfd *output_bfd,
4708 struct bfd_link_info *info,
4709 bfd *input_bfd,
4710 asection *input_section,
4711 bfd_byte *contents,
4712 Elf_Internal_Rela *relocs,
4713 Elf_Internal_Sym *local_syms,
4714 asection **local_sections)
252b5132 4715{
7619e7c7
AM		 4716 Elf_Internal_Shdr *symtab_hdr;
4717 struct elf_link_hash_entry **sym_hashes;
4718 struct ppc_elf_link_hash_table *htab;
4719 Elf_Internal_Rela *rel;
4720 Elf_Internal_Rela *relend;
4721 Elf_Internal_Rela outrel;
4722 bfd_byte *loc;
b34976b6 4723 asection *sreloc = NULL;
252b5132 4724 bfd_vma *local_got_offsets;
b34976b6 4725 bfd_boolean ret = TRUE;
b34976b6 4726
252b5132 4727#ifdef DEBUG
d003868e
AM		 4728 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
4729 "%ld relocations%s",
4730 input_bfd, input_section,
4731 (long) input_section->reloc_count,
4732 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH		 4733#endif
4734
1049f94e 4735 if (info->relocatable)
b34976b6 4736 return TRUE;
b491616a 4737
e47cd125 4738 /* Initialize howto table if not already done. */
8da6118f 4739 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH		 4740 ppc_elf_howto_init ();
4741
7619e7c7 4742 htab = ppc_elf_hash_table (info);
252b5132 4743 local_got_offsets = elf_local_got_offsets (input_bfd);
7619e7c7
AM		 4744 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4745 sym_hashes = elf_sym_hashes (input_bfd);
4746 rel = relocs;
4747 relend = relocs + input_section->reloc_count;
252b5132
RH		 4748 for (; rel < relend; rel++)
4749 {
7619e7c7
AM		 4750 enum elf_ppc_reloc_type r_type;
4751 bfd_vma addend;
4752 bfd_reloc_status_type r;
4753 Elf_Internal_Sym *sym;
4754 asection *sec;
4755 struct elf_link_hash_entry *h;
4756 const char *sym_name;
252b5132
RH		 4757 reloc_howto_type *howto;
4758 unsigned long r_symndx;
4759 bfd_vma relocation;
7619e7c7 4760 bfd_vma branch_bit, insn, from;
7619e7c7
AM		 4761 bfd_boolean unresolved_reloc;
4762 bfd_boolean warned;
4763 unsigned int tls_type, tls_mask, tls_gd;
4764
55fd94b0
AM		 4765 r_type = ELF32_R_TYPE (rel->r_info);
4766 sym = NULL;
4767 sec = NULL;
4768 h = NULL;
7619e7c7
AM		 4769 unresolved_reloc = FALSE;
4770 warned = FALSE;
252b5132 4771 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 4772
252b5132
RH		 4773 if (r_symndx < symtab_hdr->sh_info)
4774 {
4775 sym = local_syms + r_symndx;
4776 sec = local_sections[r_symndx];
26c61ae5 4777 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
252b5132 4778
8517fae7 4779 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 4780 }
4781 else
4782 {
b2a8e766
AM		 4783 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4784 r_symndx, symtab_hdr, sym_hashes,
4785 h, sec, relocation,
4786 unresolved_reloc, warned);
9abc968f 4787
252b5132 4788 sym_name = h->root.root.string;
7619e7c7
AM		 4789 }
4790
4791 /* TLS optimizations. Replace instruction sequences and relocs
4792 based on information we collected in tls_optimize. We edit
4793 RELOCS so that --emit-relocs will output something sensible
4794 for the final instruction stream. */
4795 tls_mask = 0;
4796 tls_gd = 0;
4797 if (IS_PPC_TLS_RELOC (r_type))
4798 {
4799 if (h != NULL)
4800 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
4801 else if (local_got_offsets != NULL)
4802 {
4803 char *lgot_masks;
4804 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
4805 tls_mask = lgot_masks[r_symndx];
4806 }
4807 }
4808
4809 /* Ensure reloc mapping code below stays sane. */
4810 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
4811 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
4812 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
4813 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
4814 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
4815 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
4816 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
4817 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
4818 abort ();
4819 switch (r_type)
4820 {
4821 default:
4822 break;
4823
4824 case R_PPC_GOT_TPREL16:
4825 case R_PPC_GOT_TPREL16_LO:
4826 if (tls_mask != 0
4827 && (tls_mask & TLS_TPREL) == 0)
4828 {
4829 bfd_vma insn;
4830 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
4831 insn &= 31 << 21;
4832 insn |= 0x3c020000; /* addis 0,2,0 */
4833 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
4834 r_type = R_PPC_TPREL16_HA;
4835 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4836 }
4837 break;
4838
4839 case R_PPC_TLS:
4840 if (tls_mask != 0
4841 && (tls_mask & TLS_TPREL) == 0)
4842 {
4843 bfd_vma insn, rtra;
4844 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4845 if ((insn & ((31 << 26) | (31 << 11)))
4846 == ((31 << 26) | (2 << 11)))
4847 rtra = insn & ((1 << 26) - (1 << 16));
4848 else if ((insn & ((31 << 26) | (31 << 16)))
4849 == ((31 << 26) | (2 << 16)))
4850 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
4851 else
4852 abort ();
4853 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
4854 /* add -> addi. */
4855 insn = 14 << 26;
4856 else if ((insn & (31 << 1)) == 23 << 1
4857 && ((insn & (31 << 6)) < 14 << 6
4858 || ((insn & (31 << 6)) >= 16 << 6
4859 && (insn & (31 << 6)) < 24 << 6)))
4860 /* load and store indexed -> dform. */
4861 insn = (32 | ((insn >> 6) & 31)) << 26;
4862 else if ((insn & (31 << 1)) == 21 << 1
4863 && (insn & (0x1a << 6)) == 0)
4864 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4865 insn = (((58 | ((insn >> 6) & 4)) << 26)
4866 | ((insn >> 6) & 1));
4867 else if ((insn & (31 << 1)) == 21 << 1
4868 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
4869 /* lwax -> lwa. */
4870 insn = (58 << 26) | 2;
4871 else
4872 abort ();
4873 insn |= rtra;
4874 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4875 r_type = R_PPC_TPREL16_LO;
4876 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4877 /* Was PPC_TLS which sits on insn boundary, now
4878 PPC_TPREL16_LO which is at insn+2. */
4879 rel->r_offset += 2;
4880 }
4881 break;
4882
4883 case R_PPC_GOT_TLSGD16_HI:
4884 case R_PPC_GOT_TLSGD16_HA:
4885 tls_gd = TLS_TPRELGD;
4886 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4887 goto tls_gdld_hi;
4888 break;
4889
4890 case R_PPC_GOT_TLSLD16_HI:
4891 case R_PPC_GOT_TLSLD16_HA:
4892 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4893 {
4894 tls_gdld_hi:
4895 if ((tls_mask & tls_gd) != 0)
4896 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4897 + R_PPC_GOT_TPREL16);
4898 else
4899 {
4900 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4901 rel->r_offset -= 2;
4902 r_type = R_PPC_NONE;
4903 }
4904 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4905 }
4906 break;
4907
4908 case R_PPC_GOT_TLSGD16:
4909 case R_PPC_GOT_TLSGD16_LO:
4910 tls_gd = TLS_TPRELGD;
4911 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4912 goto tls_get_addr_check;
4913 break;
4914
4915 case R_PPC_GOT_TLSLD16:
4916 case R_PPC_GOT_TLSLD16_LO:
4917 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4918 {
4919 tls_get_addr_check:
4920 if (rel + 1 < relend)
4921 {
4922 enum elf_ppc_reloc_type r_type2;
4923 unsigned long r_symndx2;
4924 struct elf_link_hash_entry *h2;
87d243f1 4925 bfd_vma insn1, insn2;
7619e7c7
AM		 4926 bfd_vma offset;
4927
4928 /* The next instruction should be a call to
4929 __tls_get_addr. Peek at the reloc to be sure. */
55fd94b0 4930 r_type2 = ELF32_R_TYPE (rel[1].r_info);
7619e7c7
AM		 4931 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4932 if (r_symndx2 < symtab_hdr->sh_info
4933 || (r_type2 != R_PPC_REL14
4934 && r_type2 != R_PPC_REL14_BRTAKEN
4935 && r_type2 != R_PPC_REL14_BRNTAKEN
4936 && r_type2 != R_PPC_REL24
4937 && r_type2 != R_PPC_PLTREL24))
4938 break;
4939
4940 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4941 while (h2->root.type == bfd_link_hash_indirect
4942 || h2->root.type == bfd_link_hash_warning)
4943 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
4944 if (h2 == NULL || h2 != htab->tls_get_addr)
4945 break;
4946
4947 /* OK, it checks out. Replace the call. */
4948 offset = rel[1].r_offset;
4949 insn1 = bfd_get_32 (output_bfd,
4950 contents + rel->r_offset - 2);
7619e7c7
AM		 4951 if ((tls_mask & tls_gd) != 0)
4952 {
4953 /* IE */
4954 insn1 &= (1 << 26) - 1;
4955 insn1 |= 32 << 26; /* lwz */
4956 insn2 = 0x7c631214; /* add 3,3,2 */
4957 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
4958 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4959 + R_PPC_GOT_TPREL16);
4960 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4961 }
4962 else
4963 {
4964 /* LE */
4965 insn1 = 0x3c620000; /* addis 3,2,0 */
4966 insn2 = 0x38630000; /* addi 3,3,0 */
4967 if (tls_gd == 0)
4968 {
4969 /* Was an LD reloc. */
4970 r_symndx = 0;
e1918d23
AM		 4971 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4972 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 4973 }
4974 r_type = R_PPC_TPREL16_HA;
4975 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4976 rel[1].r_info = ELF32_R_INFO (r_symndx,
4977 R_PPC_TPREL16_LO);
4978 rel[1].r_offset += 2;
4979 }
7619e7c7
AM		 4980 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
4981 bfd_put_32 (output_bfd, insn2, contents + offset);
7619e7c7
AM		 4982 if (tls_gd == 0)
4983 {
4984 /* We changed the symbol on an LD reloc. Start over
70bccea4 4985 in order to get h, sym, sec etc. right. */
7619e7c7
AM		 4986 rel--;
4987 continue;
4988 }
4989 }
252b5132 4990 }
7619e7c7
AM		 4991 break;
4992 }
4993
4994 /* Handle other relocations that tweak non-addend part of insn. */
4995 branch_bit = 0;
4996 switch (r_type)
4997 {
4998 default:
4999 break;
5000
5001 /* Branch taken prediction relocations. */
5002 case R_PPC_ADDR14_BRTAKEN:
5003 case R_PPC_REL14_BRTAKEN:
5004 branch_bit = BRANCH_PREDICT_BIT;
5005 /* Fall thru */
5006
4cc11e76 5007 /* Branch not taken prediction relocations. */
7619e7c7
AM		 5008 case R_PPC_ADDR14_BRNTAKEN:
5009 case R_PPC_REL14_BRNTAKEN:
5010 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5011 insn &= ~BRANCH_PREDICT_BIT;
5012 insn |= branch_bit;
5013
5014 from = (rel->r_offset
5015 + input_section->output_offset
5016 + input_section->output_section->vma);
5017
5018 /* Invert 'y' bit if not the default. */
5019 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5020 insn ^= BRANCH_PREDICT_BIT;
5021
5022 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5023 break;
252b5132
RH		 5024 }
5025
7619e7c7
AM		 5026 addend = rel->r_addend;
5027 tls_type = 0;
5028 howto = NULL;
55fd94b0
AM		 5029 if (r_type < R_PPC_max)
5030 howto = ppc_elf_howto_table[r_type];
7619e7c7 5031 switch (r_type)
252b5132
RH		 5032 {
5033 default:
7619e7c7 5034 (*_bfd_error_handler)
d003868e
AM		 5035 (_("%B: unknown relocation type %d for symbol %s"),
5036 input_bfd, (int) r_type, sym_name);
252b5132
RH		 5037
5038 bfd_set_error (bfd_error_bad_value);
b34976b6 5039 ret = FALSE;
252b5132
RH		 5040 continue;
5041
7619e7c7
AM		 5042 case R_PPC_NONE:
5043 case R_PPC_TLS:
5044 case R_PPC_EMB_MRKREF:
5045 case R_PPC_GNU_VTINHERIT:
5046 case R_PPC_GNU_VTENTRY:
7595d193
L		 5047 continue;
5048
7619e7c7
AM		 5049 /* GOT16 relocations. Like an ADDR16 using the symbol's
5050 address in the GOT as relocation value instead of the
5051 symbol's value itself. Also, create a GOT entry for the
5052 symbol and put the symbol value there. */
5053 case R_PPC_GOT_TLSGD16:
5054 case R_PPC_GOT_TLSGD16_LO:
5055 case R_PPC_GOT_TLSGD16_HI:
5056 case R_PPC_GOT_TLSGD16_HA:
5057 tls_type = TLS_TLS | TLS_GD;
5058 goto dogot;
5059
5060 case R_PPC_GOT_TLSLD16:
5061 case R_PPC_GOT_TLSLD16_LO:
5062 case R_PPC_GOT_TLSLD16_HI:
5063 case R_PPC_GOT_TLSLD16_HA:
5064 tls_type = TLS_TLS | TLS_LD;
5065 goto dogot;
5066
5067 case R_PPC_GOT_TPREL16:
5068 case R_PPC_GOT_TPREL16_LO:
5069 case R_PPC_GOT_TPREL16_HI:
5070 case R_PPC_GOT_TPREL16_HA:
5071 tls_type = TLS_TLS | TLS_TPREL;
5072 goto dogot;
5073
5074 case R_PPC_GOT_DTPREL16:
5075 case R_PPC_GOT_DTPREL16_LO:
5076 case R_PPC_GOT_DTPREL16_HI:
5077 case R_PPC_GOT_DTPREL16_HA:
5078 tls_type = TLS_TLS | TLS_DTPREL;
5079 goto dogot;
5080
5081 case R_PPC_GOT16:
5082 case R_PPC_GOT16_LO:
5083 case R_PPC_GOT16_HI:
5084 case R_PPC_GOT16_HA:
5085 dogot:
5086 {
5087 /* Relocation is to the entry for this symbol in the global
5088 offset table. */
5089 bfd_vma off;
5090 bfd_vma *offp;
5091 unsigned long indx;
5092
5093 if (htab->got == NULL)
5094 abort ();
5095
5096 indx = 0;
5097 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 5098 && (h == NULL
f5385ebf 5099 || !h->def_dynamic))
7619e7c7
AM		 5100 offp = &htab->tlsld_got.offset;
5101 else if (h != NULL)
5102 {
5103 bfd_boolean dyn;
5104 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 5105 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM		 5106 || (info->shared
5107 && SYMBOL_REFERENCES_LOCAL (info, h)))
5108 /* This is actually a static link, or it is a
5109 -Bsymbolic link and the symbol is defined
5110 locally, or the symbol was forced to be local
5111 because of a version file. */
5112 ;
5113 else
5114 {
5115 indx = h->dynindx;
5116 unresolved_reloc = FALSE;
5117 }
5118 offp = &h->got.offset;
5119 }
5120 else
5121 {
5122 if (local_got_offsets == NULL)
5123 abort ();
5124 offp = &local_got_offsets[r_symndx];
5125 }
5126
5127 /* The offset must always be a multiple of 4. We use the
5128 least significant bit to record whether we have already
5129 processed this entry. */
5130 off = *offp;
5131 if ((off & 1) != 0)
5132 off &= ~1;
5133 else
5134 {
70bccea4
AM		 5135 unsigned int tls_m = (tls_mask
5136 & (TLS_LD | TLS_GD | TLS_DTPREL
5137 | TLS_TPREL | TLS_TPRELGD));
5138
5139 if (offp == &htab->tlsld_got.offset)
5140 tls_m = TLS_LD;
5141 else if (h == NULL
f5385ebf 5142 || !h->def_dynamic)
70bccea4
AM		 5143 tls_m &= ~TLS_LD;
5144
5145 /* We might have multiple got entries for this sym.
5146 Initialize them all. */
5147 do
7619e7c7 5148 {
70bccea4
AM		 5149 int tls_ty = 0;
5150
5151 if ((tls_m & TLS_LD) != 0)
7619e7c7 5152 {
70bccea4
AM		 5153 tls_ty = TLS_TLS | TLS_LD;
5154 tls_m &= ~TLS_LD;
5155 }
5156 else if ((tls_m & TLS_GD) != 0)
5157 {
5158 tls_ty = TLS_TLS | TLS_GD;
5159 tls_m &= ~TLS_GD;
5160 }
5161 else if ((tls_m & TLS_DTPREL) != 0)
5162 {
5163 tls_ty = TLS_TLS | TLS_DTPREL;
5164 tls_m &= ~TLS_DTPREL;
5165 }
5166 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5167 {
5168 tls_ty = TLS_TLS | TLS_TPREL;
5169 tls_m = 0;
7619e7c7 5170 }
7619e7c7 5171
70bccea4 5172 /* Generate relocs for the dynamic linker. */
4e795f50
AM		 5173 if ((info->shared || indx != 0)
5174 && (h == NULL
5175 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5176 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 5177 {
70bccea4
AM		 5178 outrel.r_offset = (htab->got->output_section->vma
5179 + htab->got->output_offset
5180 + off);
e515b051 5181 outrel.r_addend = 0;
70bccea4
AM		 5182 if (tls_ty & (TLS_LD | TLS_GD))
5183 {
5184 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM		 5185 if (tls_ty == (TLS_TLS | TLS_GD))
5186 {
5187 loc = htab->relgot->contents;
5188 loc += (htab->relgot->reloc_count++
5189 * sizeof (Elf32_External_Rela));
5190 bfd_elf32_swap_reloca_out (output_bfd,
5191 &outrel, loc);
e515b051 5192 outrel.r_offset += 4;
70bccea4
AM		 5193 outrel.r_info
5194 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM		 5195 }
5196 }
5197 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5198 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5199 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5200 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5201 else if (indx == 0)
5202 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5203 else
5204 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 5205 if (indx == 0)
e515b051
AM		 5206 {
5207 outrel.r_addend += relocation;
5208 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 5209 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 5210 }
70bccea4
AM		 5211 loc = htab->relgot->contents;
5212 loc += (htab->relgot->reloc_count++
5213 * sizeof (Elf32_External_Rela));
5214 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM		 5215 }
5216
70bccea4
AM		 5217 /* Init the .got section contents if we're not
5218 emitting a reloc. */
5219 else
7619e7c7 5220 {
70bccea4
AM		 5221 bfd_vma value = relocation;
5222
7b609f53
AM		 5223 if (tls_ty == (TLS_TLS | TLS_LD))
5224 value = 1;
5225 else if (tls_ty != 0)
70bccea4 5226 {
e1918d23 5227 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 5228 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 5229 value += DTP_OFFSET - TP_OFFSET;
70bccea4 5230
7b609f53
AM		 5231 if (tls_ty == (TLS_TLS | TLS_GD))
5232 {
5233 bfd_put_32 (output_bfd, value,
5234 htab->got->contents + off + 4);
5235 value = 1;
5236 }
70bccea4 5237 }
70bccea4
AM		 5238 bfd_put_32 (output_bfd, value,
5239 htab->got->contents + off);
7619e7c7 5240 }
70bccea4
AM		 5241
5242 off += 4;
5243 if (tls_ty & (TLS_LD | TLS_GD))
5244 off += 4;
7619e7c7 5245 }
70bccea4
AM		 5246 while (tls_m != 0);
5247
5248 off = *offp;
5249 *offp = off | 1;
7619e7c7
AM		 5250 }
5251
5252 if (off >= (bfd_vma) -2)
5253 abort ();
5254
70bccea4
AM		 5255 if ((tls_type & TLS_TLS) != 0)
5256 {
5257 if (tls_type != (TLS_TLS | TLS_LD))
5258 {
5259 if ((tls_mask & TLS_LD) != 0
5260 && !(h == NULL
f5385ebf 5261 || !h->def_dynamic))
70bccea4
AM		 5262 off += 8;
5263 if (tls_type != (TLS_TLS | TLS_GD))
5264 {
5265 if ((tls_mask & TLS_GD) != 0)
5266 off += 8;
5267 if (tls_type != (TLS_TLS | TLS_DTPREL))
5268 {
5269 if ((tls_mask & TLS_DTPREL) != 0)
5270 off += 4;
5271 }
5272 }
5273 }
5274 }
5275
7619e7c7
AM		 5276 relocation = htab->got->output_offset + off - 4;
5277
5278 /* Addends on got relocations don't make much sense.
5279 x+off@got is actually x@got+off, and since the got is
5280 generated by a hash table traversal, the value in the
5281 got at entry m+n bears little relation to the entry m. */
5282 if (addend != 0)
5283 (*_bfd_error_handler)
d003868e
AM		 5284 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5285 input_bfd,
5286 input_section,
7619e7c7 5287 (long) rel->r_offset,
7b609f53 5288 howto->name,
7619e7c7
AM		 5289 sym_name);
5290 }
70bccea4 5291 break;
7619e7c7 5292
252b5132 5293 /* Relocations that need no special processing. */
7619e7c7 5294 case R_PPC_LOCAL24PC:
252b5132
RH		 5295 /* It makes no sense to point a local relocation
5296 at a symbol not in this object. */
7b609f53 5297 if (unresolved_reloc)
252b5132 5298 {
464e1740
ILT		 5299 if (! (*info->callbacks->undefined_symbol) (info,
5300 h->root.root.string,
5301 input_bfd,
5302 input_section,
5cc7c785 5303 rel->r_offset,
b34976b6
AM		 5304 TRUE))
5305 return FALSE;
252b5132
RH		 5306 continue;
5307 }
5308 break;
5309
7619e7c7
AM		 5310 case R_PPC_DTPREL16:
5311 case R_PPC_DTPREL16_LO:
5312 case R_PPC_DTPREL16_HI:
5313 case R_PPC_DTPREL16_HA:
e1918d23 5314 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 5315 break;
5316
70bccea4
AM		 5317 /* Relocations that may need to be propagated if this is a shared
5318 object. */
7619e7c7
AM		 5319 case R_PPC_TPREL16:
5320 case R_PPC_TPREL16_LO:
5321 case R_PPC_TPREL16_HI:
5322 case R_PPC_TPREL16_HA:
e1918d23 5323 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 5324 /* The TPREL16 relocs shouldn't really be used in shared
5325 libs as they will result in DT_TEXTREL being set, but
5326 support them anyway. */
5327 goto dodyn;
5328
5329 case R_PPC_TPREL32:
e1918d23 5330 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 5331 goto dodyn;
5332
5333 case R_PPC_DTPREL32:
e1918d23 5334 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 5335 goto dodyn;
5336
e515b051
AM		 5337 case R_PPC_DTPMOD32:
5338 relocation = 1;
5339 addend = 0;
5340 goto dodyn;
5341
7619e7c7
AM		 5342 case R_PPC_REL24:
5343 case R_PPC_REL32:
5344 case R_PPC_REL14:
5345 case R_PPC_REL14_BRTAKEN:
5346 case R_PPC_REL14_BRNTAKEN:
252b5132
RH		 5347 /* If these relocations are not to a named symbol, they can be
5348 handled right here, no need to bother the dynamic linker. */
f6c52c13
AM		 5349 if (SYMBOL_REFERENCES_LOCAL (info, h)
5350 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 5351 break;
70bccea4 5352 /* fall through */
252b5132 5353
70bccea4
AM		 5354 /* Relocations that always need to be propagated if this is a shared
5355 object. */
7619e7c7
AM		 5356 case R_PPC_ADDR32:
5357 case R_PPC_ADDR24:
5358 case R_PPC_ADDR16:
5359 case R_PPC_ADDR16_LO:
5360 case R_PPC_ADDR16_HI:
5361 case R_PPC_ADDR16_HA:
5362 case R_PPC_ADDR14:
5363 case R_PPC_ADDR14_BRTAKEN:
5364 case R_PPC_ADDR14_BRNTAKEN:
5365 case R_PPC_UADDR32:
5366 case R_PPC_UADDR16:
ee05f2fe
AM		 5367 /* r_symndx will be zero only for relocs against symbols
5368 from removed linkonce sections, or sections discarded by
5369 a linker script. */
7619e7c7 5370 dodyn:
ee05f2fe
AM		 5371 if (r_symndx == 0)
5372 break;
5373 /* Fall thru. */
5374
c87b5a93
AM		 5375 if ((input_section->flags & SEC_ALLOC) == 0)
5376 break;
5377 /* Fall thru. */
5378
ee05f2fe 5379 if ((info->shared
4e795f50
AM		 5380 && (h == NULL
5381 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5382 || h->root.type != bfd_link_hash_undefweak)
ee05f2fe 5383 && (MUST_BE_DYN_RELOC (r_type)
f6c52c13 5384 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM		 5385 || (ELIMINATE_COPY_RELOCS
5386 && !info->shared
ee05f2fe
AM		 5387 && h != NULL
5388 && h->dynindx != -1
f5385ebf
AM		 5389 && !h->non_got_ref
5390 && h->def_dynamic
5391 && !h->def_regular))
252b5132 5392 {
0bb2d96a 5393 int skip;
252b5132
RH		 5394
5395#ifdef DEBUG
55fd94b0
AM		 5396 fprintf (stderr, "ppc_elf_relocate_section needs to "
5397 "create relocation for %s\n",
70bccea4
AM		 5398 (h && h->root.root.string
5399 ? h->root.root.string : "<unknown>"));
252b5132
RH		 5400#endif
5401
5402 /* When generating a shared object, these relocations
70bccea4
AM		 5403 are copied into the output file to be resolved at run
5404 time. */
252b5132
RH		 5405 if (sreloc == NULL)
5406 {
5407 const char *name;
5408
5409 name = (bfd_elf_string_from_elf_section
5410 (input_bfd,
5411 elf_elfheader (input_bfd)->e_shstrndx,
5412 elf_section_data (input_section)->rel_hdr.sh_name));
5413 if (name == NULL)
b34976b6 5414 return FALSE;
252b5132
RH		 5415
5416 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5417 && strcmp (bfd_get_section_name (input_bfd,
5418 input_section),
5419 name + 5) == 0);
5420
7619e7c7 5421 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH		 5422 BFD_ASSERT (sreloc != NULL);
5423 }
5424
0bb2d96a 5425 skip = 0;
252b5132 5426
c629eae0
JJ		 5427 outrel.r_offset =
5428 _bfd_elf_section_offset (output_bfd, info, input_section,
5429 rel->r_offset);
0bb2d96a
JJ		 5430 if (outrel.r_offset == (bfd_vma) -1
5431 || outrel.r_offset == (bfd_vma) -2)
5432 skip = (int) outrel.r_offset;
252b5132
RH		 5433 outrel.r_offset += (input_section->output_section->vma
5434 + input_section->output_offset);
5435
5436 if (skip)
5437 memset (&outrel, 0, sizeof outrel);
f6c52c13 5438 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 5439 {
7619e7c7 5440 unresolved_reloc = FALSE;
252b5132
RH		 5441 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5442 outrel.r_addend = rel->r_addend;
5443 }
5444 else
5445 {
47388f4c
AM		 5446 outrel.r_addend = relocation + rel->r_addend;
5447
252b5132 5448 if (r_type == R_PPC_ADDR32)
47388f4c 5449 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH		 5450 else
5451 {
5452 long indx;
5453
47388f4c 5454 if (bfd_is_abs_section (sec))
252b5132
RH		 5455 indx = 0;
5456 else if (sec == NULL || sec->owner == NULL)
5457 {
5458 bfd_set_error (bfd_error_bad_value);
b34976b6 5459 return FALSE;
252b5132
RH		 5460 }
5461 else
5462 {
5463 asection *osec;
5464
47388f4c
AM		 5465 /* We are turning this relocation into one
5466 against a section symbol. It would be
5467 proper to subtract the symbol's value,
5468 osec->vma, from the emitted reloc addend,
5469 but ld.so expects buggy relocs. */
252b5132
RH		 5470 osec = sec->output_section;
5471 indx = elf_section_data (osec)->dynindx;
8da6118f 5472 BFD_ASSERT (indx > 0);
252b5132
RH		 5473#ifdef DEBUG
5474 if (indx <= 0)
55fd94b0
AM		 5475 printf ("indx=%d section=%s flags=%08x name=%s\n",
5476 indx, osec->name, osec->flags,
5477 h->root.root.string);
252b5132
RH		 5478#endif
5479 }
5480
5481 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 5482 }
5483 }
5484
947216bf
AM		 5485 loc = sreloc->contents;
5486 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5487 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 5488
2243deae 5489 if (skip == -1)
252b5132 5490 continue;
2243deae
L		 5491
5492 /* This reloc will be computed at runtime. We clear the memory
5493 so that it contains predictable value. */
5494 if (! skip
5495 && ((input_section->flags & SEC_ALLOC) != 0
5496 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5497 {
5498 relocation = howto->pc_relative ? outrel.r_offset : 0;
5499 addend = 0;
5500 break;
5501 }
252b5132 5502 }
252b5132
RH		 5503 break;
5504
b4a38de6
AM		 5505 case R_PPC_RELAX32PC_PLT:
5506 case R_PPC_RELAX32_PLT:
5507 BFD_ASSERT (h != NULL
5508 && h->plt.offset != (bfd_vma) -1
5509 && htab->plt != NULL);
5510
5511 relocation = (htab->plt->output_section->vma
5512 + htab->plt->output_offset
5513 + h->plt.offset);
5514 if (r_type == R_PPC_RELAX32_PLT)
5515 goto relax32;
5516 /* Fall thru */
5517
f31a141e
AM		 5518 case R_PPC_RELAX32PC:
5519 relocation -= (input_section->output_section->vma
5520 + input_section->output_offset
5521 + rel->r_offset - 4);
5522 /* Fall thru */
b4a38de6 5523
deaaf2f3 5524 case R_PPC_RELAX32:
b4a38de6 5525 relax32:
9abc968f
AM		 5526 {
5527 unsigned long t0;
5528 unsigned long t1;
5529
5530 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
5531 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
5532
5533 /* We're clearing the bits for R_PPC_ADDR16_HA
5534 and R_PPC_ADDR16_LO here. */
5535 t0 &= ~0xffff;
5536 t1 &= ~0xffff;
5537
5538 /* t0 is HA, t1 is LO */
5539 relocation += addend;
5540 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
5541 t1 |= relocation & 0xffff;
5542
5543 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
5544 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
5545 }
8517fae7 5546 continue;
deaaf2f3 5547
70bccea4 5548 /* Indirect .sdata relocation. */
7619e7c7 5549 case R_PPC_EMB_SDAI16:
c9a2f333 5550 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 5551 relocation
76750a2f
AM		 5552 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
5553 h, relocation, rel);
252b5132
RH		 5554 break;
5555
70bccea4 5556 /* Indirect .sdata2 relocation. */
7619e7c7 5557 case R_PPC_EMB_SDA2I16:
c9a2f333 5558 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 5559 relocation
76750a2f
AM		 5560 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
5561 h, relocation, rel);
252b5132
RH		 5562 break;
5563
70bccea4
AM		 5564 /* Handle the TOC16 reloc. We want to use the offset within the .got
5565 section, not the actual VMA. This is appropriate when generating
5566 an embedded ELF object, for which the .got section acts like the
5567 AIX .toc section. */
7619e7c7 5568 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 5569 BFD_ASSERT (sec != NULL);
252b5132
RH		 5570 BFD_ASSERT (bfd_is_und_section (sec)
5571 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 5572 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 5573
70bccea4 5574 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH		 5575 break;
5576
7619e7c7 5577 case R_PPC_PLTREL24:
252b5132 5578 /* Relocation is to the entry for this symbol in the
70bccea4 5579 procedure linkage table. */
252b5132
RH		 5580 BFD_ASSERT (h != NULL);
5581
5582 if (h->plt.offset == (bfd_vma) -1
7619e7c7 5583 || htab->plt == NULL)
252b5132
RH		 5584 {
5585 /* We didn't make a PLT entry for this symbol. This
70bccea4
AM		 5586 happens when statically linking PIC code, or when
5587 using -Bsymbolic. */
252b5132
RH		 5588 break;
5589 }
5590
7619e7c7
AM		 5591 unresolved_reloc = FALSE;
5592 relocation = (htab->plt->output_section->vma
5593 + htab->plt->output_offset
252b5132 5594 + h->plt.offset);
8da6118f 5595 break;
252b5132 5596
70bccea4 5597 /* Relocate against _SDA_BASE_. */
7619e7c7 5598 case R_PPC_SDAREL16:
252b5132
RH		 5599 {
5600 const char *name;
5601
55fd94b0 5602 BFD_ASSERT (sec != NULL);
252b5132 5603 name = bfd_get_section_name (abfd, sec->output_section);
5f819128
AM		 5604 if (! ((strncmp (name, ".sdata", 6) == 0
5605 && (name[6] == 0 || name[6] == '.'))
5606 || (strncmp (name, ".sbss", 5) == 0
5607 && (name[5] == 0 || name[5] == '.'))))
252b5132 5608 {
55fd94b0 5609 (*_bfd_error_handler)
d003868e 5610 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 5611 "in the wrong output section (%s)"),
d003868e 5612 input_bfd,
55fd94b0
AM		 5613 sym_name,
5614 howto->name,
5615 name);
252b5132 5616 }
c9a2f333 5617 addend -= htab->sdata[0].sym_val;
252b5132
RH		 5618 }
5619 break;
5620
70bccea4 5621 /* Relocate against _SDA2_BASE_. */
7619e7c7 5622 case R_PPC_EMB_SDA2REL:
252b5132
RH		 5623 {
5624 const char *name;
5625
55fd94b0 5626 BFD_ASSERT (sec != NULL);
252b5132 5627 name = bfd_get_section_name (abfd, sec->output_section);
5f819128
AM		 5628 if (! (strncmp (name, ".sdata2", 7) == 0
5629 || strncmp (name, ".sbss2", 6) == 0))
252b5132 5630 {
55fd94b0 5631 (*_bfd_error_handler)
d003868e 5632 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 5633 "in the wrong output section (%s)"),
d003868e 5634 input_bfd,
55fd94b0
AM		 5635 sym_name,
5636 howto->name,
5637 name);
c3668558 5638
252b5132 5639 bfd_set_error (bfd_error_bad_value);
b34976b6 5640 ret = FALSE;
252b5132
RH		 5641 continue;
5642 }
c9a2f333 5643 addend -= htab->sdata[1].sym_val;
252b5132
RH		 5644 }
5645 break;
5646
70bccea4 5647 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM		 5648 case R_PPC_EMB_SDA21:
5649 case R_PPC_EMB_RELSDA:
252b5132
RH		 5650 {
5651 const char *name;
5652 int reg;
5653
55fd94b0 5654 BFD_ASSERT (sec != NULL);
252b5132 5655 name = bfd_get_section_name (abfd, sec->output_section);
b34976b6 5656 if (((strncmp (name, ".sdata", 6) == 0
5f819128
AM		 5657 && (name[6] == 0 || name[6] == '.'))
5658 || (strncmp (name, ".sbss", 5) == 0
5659 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH		 5660 {
5661 reg = 13;
c9a2f333 5662 addend -= htab->sdata[0].sym_val;
252b5132
RH		 5663 }
5664
5f819128
AM		 5665 else if (strncmp (name, ".sdata2", 7) == 0
5666 || strncmp (name, ".sbss2", 6) == 0)
252b5132
RH		 5667 {
5668 reg = 2;
c9a2f333 5669 addend -= htab->sdata[1].sym_val;
252b5132
RH		 5670 }
5671
8da6118f
KH		 5672 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
5673 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH		 5674 {
5675 reg = 0;
5676 }
5677
5678 else
5679 {
55fd94b0 5680 (*_bfd_error_handler)
d003868e 5681 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 5682 "in the wrong output section (%s)"),
d003868e 5683 input_bfd,
55fd94b0
AM		 5684 sym_name,
5685 howto->name,
5686 name);
252b5132
RH		 5687
5688 bfd_set_error (bfd_error_bad_value);
b34976b6 5689 ret = FALSE;
252b5132
RH		 5690 continue;
5691 }
5692
5693 if (r_type == R_PPC_EMB_SDA21)
5694 { /* fill in register field */
7619e7c7 5695 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 5696 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 5697 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH		 5698 }
5699 }
5700 break;
5701
70bccea4 5702 /* Relocate against the beginning of the section. */
7619e7c7
AM		 5703 case R_PPC_SECTOFF:
5704 case R_PPC_SECTOFF_LO:
5705 case R_PPC_SECTOFF_HI:
5706 case R_PPC_SECTOFF_HA:
55fd94b0 5707 BFD_ASSERT (sec != NULL);
252b5132 5708 addend -= sec->output_section->vma;
252b5132
RH		 5709 break;
5710
70bccea4 5711 /* Negative relocations. */
7619e7c7
AM		 5712 case R_PPC_EMB_NADDR32:
5713 case R_PPC_EMB_NADDR16:
5714 case R_PPC_EMB_NADDR16_LO:
5715 case R_PPC_EMB_NADDR16_HI:
5716 case R_PPC_EMB_NADDR16_HA:
8da6118f 5717 addend -= 2 * relocation;
252b5132
RH		 5718 break;
5719
7619e7c7
AM		 5720 case R_PPC_COPY:
5721 case R_PPC_GLOB_DAT:
5722 case R_PPC_JMP_SLOT:
5723 case R_PPC_RELATIVE:
5724 case R_PPC_PLT32:
5725 case R_PPC_PLTREL32:
5726 case R_PPC_PLT16_LO:
5727 case R_PPC_PLT16_HI:
5728 case R_PPC_PLT16_HA:
5729 case R_PPC_ADDR30:
5730 case R_PPC_EMB_RELSEC16:
5731 case R_PPC_EMB_RELST_LO:
5732 case R_PPC_EMB_RELST_HI:
5733 case R_PPC_EMB_RELST_HA:
5734 case R_PPC_EMB_BIT_FLD:
5735 (*_bfd_error_handler)
d003868e
AM		 5736 (_("%B: relocation %s is not yet supported for symbol %s."),
5737 input_bfd,
7619e7c7
AM		 5738 howto->name,
5739 sym_name);
252b5132
RH		 5740
5741 bfd_set_error (bfd_error_invalid_operation);
b34976b6 5742 ret = FALSE;
252b5132 5743 continue;
7619e7c7 5744 }
252b5132 5745
7619e7c7
AM		 5746 /* Do any further special processing. */
5747 switch (r_type)
5748 {
5749 default:
5750 break;
5751
5752 case R_PPC_ADDR16_HA:
5753 case R_PPC_GOT16_HA:
5754 case R_PPC_PLT16_HA:
5755 case R_PPC_SECTOFF_HA:
5756 case R_PPC_TPREL16_HA:
5757 case R_PPC_DTPREL16_HA:
5758 case R_PPC_GOT_TLSGD16_HA:
5759 case R_PPC_GOT_TLSLD16_HA:
5760 case R_PPC_GOT_TPREL16_HA:
5761 case R_PPC_GOT_DTPREL16_HA:
5762 case R_PPC_EMB_NADDR16_HA:
5763 case R_PPC_EMB_RELST_HA:
5764 /* It's just possible that this symbol is a weak symbol
7b609f53 5765 that's not actually defined anywhere. In that case,
7619e7c7
AM		 5766 'sec' would be NULL, and we should leave the symbol
5767 alone (it will be set to zero elsewhere in the link). */
5768 if (sec != NULL)
e515b051
AM		 5769 /* Add 0x10000 if sign bit in 0:15 is set.
5770 Bits 0:15 are not used. */
5771 addend += 0x8000;
7619e7c7 5772 break;
252b5132
RH		 5773 }
5774
252b5132 5775#ifdef DEBUG
55fd94b0
AM		 5776 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5777 "offset = %ld, addend = %ld\n",
252b5132 5778 howto->name,
8da6118f 5779 (int) r_type,
252b5132
RH		 5780 sym_name,
5781 r_symndx,
7619e7c7 5782 (long) rel->r_offset,
8da6118f 5783 (long) addend);
252b5132
RH		 5784#endif
5785
7619e7c7
AM		 5786 if (unresolved_reloc
5787 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 5788 && h->def_dynamic))
7619e7c7
AM		 5789 {
5790 (*_bfd_error_handler)
d003868e
AM		 5791 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5792 input_bfd,
5793 input_section,
7619e7c7 5794 (long) rel->r_offset,
7b609f53 5795 howto->name,
7619e7c7
AM		 5796 sym_name);
5797 ret = FALSE;
5798 }
5799
252b5132
RH		 5800 r = _bfd_final_link_relocate (howto,
5801 input_bfd,
5802 input_section,
5803 contents,
7619e7c7 5804 rel->r_offset,
252b5132
RH		 5805 relocation,
5806 addend);
5807
7619e7c7 5808 if (r != bfd_reloc_ok)
252b5132 5809 {
7619e7c7 5810 if (r == bfd_reloc_overflow)
252b5132 5811 {
7619e7c7
AM		 5812 if (warned)
5813 continue;
5814 if (h != NULL
5815 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH		 5816 && howto->pc_relative)
5817 {
5818 /* Assume this is a call protected by other code that
5819 detect the symbol is undefined. If this is the case,
5820 we can safely ignore the overflow. If not, the
5821 program is hosed anyway, and a little warning isn't
5822 going to help. */
252b5132 5823
dc1bc0c9
RH		 5824 continue;
5825 }
252b5132 5826
7619e7c7 5827 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 5828 (h ? &h->root : NULL),
7619e7c7
AM		 5829 sym_name,
5830 howto->name,
5831 rel->r_addend,
5832 input_bfd,
5833 input_section,
5834 rel->r_offset))
5835 return FALSE;
dc1bc0c9
RH		 5836 }
5837 else
5838 {
7619e7c7 5839 (*_bfd_error_handler)
d003868e
AM		 5840 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
5841 input_bfd, input_section,
7b609f53 5842 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 5843 ret = FALSE;
252b5132
RH		 5844 }
5845 }
5846 }
5847
252b5132
RH		 5848#ifdef DEBUG
5849 fprintf (stderr, "\n");
5850#endif
5851
5852 return ret;
5853}
252b5132 5854\f
25dbc73a
AM		 5855/* Finish up dynamic symbol handling. We set the contents of various
5856 dynamic sections here. */
c5fccbec 5857
b34976b6 5858static bfd_boolean
25dbc73a
AM		 5859ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
5860 struct bfd_link_info *info,
5861 struct elf_link_hash_entry *h,
5862 Elf_Internal_Sym *sym)
e1a9cb8e 5863{
25dbc73a 5864 struct ppc_elf_link_hash_table *htab;
e1a9cb8e 5865
25dbc73a
AM		 5866#ifdef DEBUG
5867 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
5868 h->root.root.string);
5869#endif
e1a9cb8e 5870
25dbc73a
AM		 5871 htab = ppc_elf_hash_table (info);
5872 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 5873
25dbc73a 5874 if (h->plt.offset != (bfd_vma) -1)
e1a9cb8e 5875 {
25dbc73a
AM		 5876 Elf_Internal_Rela rela;
5877 bfd_byte *loc;
5878 bfd_vma reloc_index;
e1a9cb8e 5879
25dbc73a
AM		 5880#ifdef DEBUG
5881 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
5882#endif
e1a9cb8e 5883
25dbc73a
AM		 5884 /* This symbol has an entry in the procedure linkage table. Set
5885 it up. */
e1a9cb8e 5886
25dbc73a
AM		 5887 BFD_ASSERT (h->dynindx != -1);
5888 BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
e1a9cb8e 5889
25dbc73a
AM		 5890 /* We don't need to fill in the .plt. The ppc dynamic linker
5891 will fill it in. */
e1a9cb8e 5892
25dbc73a
AM		 5893 /* Fill in the entry in the .rela.plt section. */
5894 rela.r_offset = (htab->plt->output_section->vma
5895 + htab->plt->output_offset
5896 + h->plt.offset);
5897 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
5898 rela.r_addend = 0;
e1a9cb8e 5899
25dbc73a
AM		 5900 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
5901 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
5902 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
5903 loc = (htab->relplt->contents
5904 + reloc_index * sizeof (Elf32_External_Rela));
5905 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 5906
25dbc73a
AM		 5907 if (!h->def_regular)
5908 {
5909 /* Mark the symbol as undefined, rather than as defined in
5910 the .plt section. Leave the value alone. */
5911 sym->st_shndx = SHN_UNDEF;
5912 /* If the symbol is weak, we do need to clear the value.
5913 Otherwise, the PLT entry would provide a definition for
5914 the symbol even if the symbol wasn't defined anywhere,
5915 and so the symbol would never be NULL. */
5916 if (!h->ref_regular_nonweak)
5917 sym->st_value = 0;
5918 }
e1a9cb8e
NC		 5919 }
5920
25dbc73a
AM		 5921 if (h->needs_copy)
5922 {
5923 asection *s;
5924 Elf_Internal_Rela rela;
5925 bfd_byte *loc;
e1a9cb8e 5926
25dbc73a 5927 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 5928
25dbc73a
AM		 5929#ifdef DEBUG
5930 fprintf (stderr, ", copy");
5931#endif
e1a9cb8e 5932
25dbc73a 5933 BFD_ASSERT (h->dynindx != -1);
86bbe32f 5934
25dbc73a
AM		 5935 if (h->size <= elf_gp_size (htab->elf.dynobj))
5936 s = htab->relsbss;
5937 else
5938 s = htab->relbss;
5939 BFD_ASSERT (s != NULL);
e1a9cb8e 5940
25dbc73a
AM		 5941 rela.r_offset = (h->root.u.def.value
5942 + h->root.u.def.section->output_section->vma
5943 + h->root.u.def.section->output_offset);
5944 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
5945 rela.r_addend = 0;
5946 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5947 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5948 }
e1a9cb8e 5949
25dbc73a
AM		 5950#ifdef DEBUG
5951 fprintf (stderr, "\n");
5952#endif
e1a9cb8e 5953
25dbc73a
AM		 5954 /* Mark some specially defined symbols as absolute. */
5955 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5956 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
5957 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
5958 sym->st_shndx = SHN_ABS;
e1a9cb8e 5959
25dbc73a
AM		 5960 return TRUE;
5961}
5962\f
5963static enum elf_reloc_type_class
5964ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 5965{
25dbc73a
AM		 5966 switch (ELF32_R_TYPE (rela->r_info))
5967 {
5968 case R_PPC_RELATIVE:
5969 return reloc_class_relative;
5970 case R_PPC_REL24:
5971 case R_PPC_ADDR24:
5972 case R_PPC_JMP_SLOT:
5973 return reloc_class_plt;
5974 case R_PPC_COPY:
5975 return reloc_class_copy;
5976 default:
5977 return reloc_class_normal;
5978 }
e1a9cb8e 5979}
25dbc73a
AM		 5980\f
5981/* Finish up the dynamic sections. */
e1a9cb8e 5982
25dbc73a
AM		 5983static bfd_boolean
5984ppc_elf_finish_dynamic_sections (bfd *output_bfd,
5985 struct bfd_link_info *info)
e1a9cb8e 5986{
25dbc73a
AM		 5987 asection *sdyn;
5988 struct ppc_elf_link_hash_table *htab;
e1a9cb8e 5989
25dbc73a
AM		 5990#ifdef DEBUG
5991 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
5992#endif
6b0817e5 5993
25dbc73a
AM		 5994 htab = ppc_elf_hash_table (info);
5995 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
e1a9cb8e 5996
25dbc73a 5997 if (htab->elf.dynamic_sections_created)
e1a9cb8e 5998 {
25dbc73a 5999 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 6000
25dbc73a 6001 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 6002
25dbc73a
AM		 6003 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6004 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6005 for (; dyncon < dynconend; dyncon++)
6006 {
6007 Elf_Internal_Dyn dyn;
6008 asection *s;
e1a9cb8e 6009
25dbc73a 6010 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
86bbe32f 6011
25dbc73a
AM		 6012 switch (dyn.d_tag)
6013 {
6014 case DT_PLTGOT:
6015 s = htab->plt;
6016 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6017 break;
86bbe32f 6018
25dbc73a
AM		 6019 case DT_PLTRELSZ:
6020 dyn.d_un.d_val = htab->relplt->size;
6021 break;
e1a9cb8e 6022
25dbc73a
AM		 6023 case DT_JMPREL:
6024 s = htab->relplt;
6025 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6026 break;
2f89ff8d 6027
25dbc73a
AM		 6028 default:
6029 continue;
6030 }
4c45e5c9 6031
25dbc73a
AM		 6032 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6033 }
6034 }
4c45e5c9 6035
25dbc73a
AM		 6036 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6037 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6038 if (htab->got)
6039 {
6040 unsigned char *contents = htab->got->contents;
6041 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
2f89ff8d 6042
25dbc73a
AM		 6043 if (sdyn == NULL)
6044 bfd_put_32 (output_bfd, 0, contents + 4);
6045 else
6046 bfd_put_32 (output_bfd,
6047 sdyn->output_section->vma + sdyn->output_offset,
6048 contents + 4);
6049
6050 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6051 }
6052
6053 return TRUE;
6054}
e1a9cb8e 6055\f
252b5132
RH		 6056#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6057#define TARGET_LITTLE_NAME "elf32-powerpcle"
6058#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6059#define TARGET_BIG_NAME "elf32-powerpc"
6060#define ELF_ARCH bfd_arch_powerpc
6061#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC		 6062#ifdef __QNXTARGET__
6063#define ELF_MAXPAGESIZE 0x1000
6064#else
252b5132 6065#define ELF_MAXPAGESIZE 0x10000
d0facd1b 6066#endif
b1342370 6067#define ELF_MINPAGESIZE 0x1000
252b5132
RH		 6068#define elf_info_to_howto ppc_elf_info_to_howto
6069
6070#ifdef EM_CYGNUS_POWERPC
6071#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6072#endif
6073
6074#ifdef EM_PPC_OLD
6075#define ELF_MACHINE_ALT2 EM_PPC_OLD
6076#endif
6077
6078#define elf_backend_plt_not_loaded 1
6079#define elf_backend_got_symbol_offset 4
6080#define elf_backend_can_gc_sections 1
51b64d56 6081#define elf_backend_can_refcount 1
252b5132 6082#define elf_backend_got_header_size 12
b491616a 6083#define elf_backend_rela_normal 1
252b5132 6084
43c40ab2 6085#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 6086#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 6087#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132
RH		 6088#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6089#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 6090#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
252b5132 6091
feee612b 6092#define elf_backend_object_p ppc_elf_object_p
252b5132
RH		 6093#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6094#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6095#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6096#define elf_backend_relocate_section ppc_elf_relocate_section
6097#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6098#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 6099#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH		 6100#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6101#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6102#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6103#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6104#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6105#define elf_backend_fake_sections ppc_elf_fake_sections
6106#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ		 6107#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6108#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
29c2fb7c 6109#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM		 6110#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6111#define elf_backend_final_write_processing ppc_elf_final_write_processing
6112#define elf_backend_write_section ppc_elf_write_section
2f89ff8d 6113#define elf_backend_special_sections ppc_elf_special_sections
4c45e5c9 6114#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
252b5132
RH		 6115
6116#include "elf32-target.h"
GDB Binutils - Deliverables
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