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[deliverable/binutils-gdb.git] / bfd / elf32-ppc.c
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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
AM		 19 along with this program; if not, write to the
20 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, 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
25dbc73a
AM		 2223 htab->relgot = bfd_make_section (abfd, ".rela.got");
2224 if (!htab->relgot
2225 || ! bfd_set_section_flags (abfd, htab->relgot,
2226 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2227 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2228 | SEC_READONLY))
2229 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2230 return FALSE;
3dab13f6 2231
25dbc73a
AM		 2232 return TRUE;
2233}
3dab13f6 2234
25dbc73a
AM		 2235/* We have to create .dynsbss and .rela.sbss here so that they get mapped
2236 to output sections (just like _bfd_elf_create_dynamic_sections has
2237 to create .dynbss and .rela.bss). */
3dab13f6 2238
25dbc73a
AM		 2239static bfd_boolean
2240ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2241{
2242 struct ppc_elf_link_hash_table *htab;
2243 asection *s;
2244 flagword flags;
3dab13f6 2245
25dbc73a 2246 htab = ppc_elf_hash_table (info);
3dab13f6 2247
25dbc73a
AM		 2248 if (htab->got == NULL
2249 && !ppc_elf_create_got (abfd, info))
3dab13f6
AM		 2250 return FALSE;
2251
25dbc73a
AM		 2252 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2253 return FALSE;
3dab13f6 2254
25dbc73a
AM		 2255 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2256 | SEC_LINKER_CREATED);
3dab13f6 2257
25dbc73a
AM		 2258 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2259 htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
2260 if (s == NULL
2261 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2262 return FALSE;
3dab13f6 2263
25dbc73a
AM		 2264 if (! info->shared)
2265 {
2266 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2267 htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss");
2268 if (s == NULL
2269 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2270 || ! bfd_set_section_alignment (abfd, s, 2))
2271 return FALSE;
2272 }
3dab13f6 2273
25dbc73a
AM		 2274 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2275 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2276 if (s == NULL)
2277 abort ();
3dab13f6 2278
25dbc73a
AM		 2279 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
2280 return bfd_set_section_flags (abfd, s, flags);
2281}
3dab13f6 2282
25dbc73a 2283/* Copy the extra info we tack onto an elf_link_hash_entry. */
58111eb7 2284
25dbc73a
AM		 2285static void
2286ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
2287 struct elf_link_hash_entry *dir,
2288 struct elf_link_hash_entry *ind)
2289{
2290 struct ppc_elf_link_hash_entry *edir, *eind;
3dab13f6 2291
25dbc73a
AM		 2292 edir = (struct ppc_elf_link_hash_entry *) dir;
2293 eind = (struct ppc_elf_link_hash_entry *) ind;
3dab13f6 2294
25dbc73a
AM		 2295 if (eind->dyn_relocs != NULL)
2296 {
2297 if (edir->dyn_relocs != NULL)
3dab13f6 2298 {
25dbc73a
AM		 2299 struct ppc_elf_dyn_relocs **pp;
2300 struct ppc_elf_dyn_relocs *p;
3dab13f6 2301
25dbc73a
AM		 2302 if (ind->root.type == bfd_link_hash_indirect)
2303 abort ();
2304
2305 /* Add reloc counts against the weak sym to the strong sym
2306 list. Merge any entries against the same section. */
2307 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
3dab13f6 2308 {
25dbc73a
AM		 2309 struct ppc_elf_dyn_relocs *q;
2310
2311 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2312 if (q->sec == p->sec)
2313 {
2314 q->pc_count += p->pc_count;
2315 q->count += p->count;
2316 *pp = p->next;
2317 break;
2318 }
2319 if (q == NULL)
2320 pp = &p->next;
3dab13f6 2321 }
25dbc73a 2322 *pp = edir->dyn_relocs;
3dab13f6 2323 }
25dbc73a
AM		 2324
2325 edir->dyn_relocs = eind->dyn_relocs;
2326 eind->dyn_relocs = NULL;
3dab13f6 2327 }
3dab13f6 2328
25dbc73a 2329 edir->tls_mask |= eind->tls_mask;
3dab13f6 2330
25dbc73a
AM		 2331 if (ELIMINATE_COPY_RELOCS
2332 && ind->root.type != bfd_link_hash_indirect
2333 && dir->dynamic_adjusted)
2334 {
2335 /* If called to transfer flags for a weakdef during processing
2336 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2337 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2338 dir->ref_dynamic |= ind->ref_dynamic;
2339 dir->ref_regular |= ind->ref_regular;
2340 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
2341 dir->needs_plt |= ind->needs_plt;
2342 }
2343 else
2344 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
2345}
3dab13f6 2346
8853c3d3
AM		 2347/* Return 1 if target is one of ours. */
2348
2349static bfd_boolean
2350is_ppc_elf_target (const struct bfd_target *targ)
2351{
2352 extern const bfd_target bfd_elf32_powerpc_vec;
2353 extern const bfd_target bfd_elf32_powerpcle_vec;
2354
2355 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2356}
2357
25dbc73a
AM		 2358/* Hook called by the linker routine which adds symbols from an object
2359 file. We use it to put .comm items in .sbss, and not .bss. */
58111eb7 2360
25dbc73a
AM		 2361static bfd_boolean
2362ppc_elf_add_symbol_hook (bfd *abfd,
2363 struct bfd_link_info *info,
2364 Elf_Internal_Sym *sym,
2365 const char **namep ATTRIBUTE_UNUSED,
2366 flagword *flagsp ATTRIBUTE_UNUSED,
2367 asection **secp,
2368 bfd_vma *valp)
2369{
2370 if (sym->st_shndx == SHN_COMMON
2371 && !info->relocatable
2372 && sym->st_size <= elf_gp_size (abfd)
d2663f46 2373 && is_ppc_elf_target (info->hash->creator))
25dbc73a
AM		 2374 {
2375 /* Common symbols less than or equal to -G nn bytes are automatically
2376 put into .sbss. */
2377 struct ppc_elf_link_hash_table *htab;
3dab13f6 2378
25dbc73a
AM		 2379 htab = ppc_elf_hash_table (info);
2380 if (htab->sbss == NULL)
2381 {
644285ef 2382 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
3dab13f6 2383
644285ef
AM		 2384 if (!htab->elf.dynobj)
2385 htab->elf.dynobj = abfd;
2386
2387 htab->sbss = bfd_make_section_anyway (htab->elf.dynobj, ".sbss");
25dbc73a 2388 if (htab->sbss == NULL
644285ef 2389 || ! bfd_set_section_flags (htab->elf.dynobj, htab->sbss, flags))
25dbc73a 2390 return FALSE;
3dab13f6 2391 }
3dab13f6 2392
25dbc73a
AM		 2393 *secp = htab->sbss;
2394 *valp = sym->st_size;
2395 }
3dab13f6 2396
25dbc73a 2397 return TRUE;
3dab13f6
AM		 2398}
2399\f
c9a2f333 2400/* Create a special linker section. */
25dbc73a 2401
c9a2f333 2402static bfd_boolean
55fd94b0
AM		 2403ppc_elf_create_linker_section (bfd *abfd,
2404 struct bfd_link_info *info,
c9a2f333
AM		 2405 flagword flags,
2406 elf_linker_section_t *lsect)
252b5132 2407{
58111eb7 2408 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
c9a2f333 2409 asection *s;
58111eb7 2410
c9a2f333
AM		 2411 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2412 | SEC_LINKER_CREATED);
58111eb7
AM		 2413
2414 /* Record the first bfd that needs the special sections. */
2415 if (!htab->elf.dynobj)
2416 htab->elf.dynobj = abfd;
2417
76750a2f
AM		 2418 s = bfd_make_section_anyway (htab->elf.dynobj, lsect->name);
2419 if (s == NULL
2420 || !bfd_set_section_flags (htab->elf.dynobj, s, flags)
2421 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
c9a2f333 2422 return FALSE;
76750a2f 2423 lsect->section = s;
58111eb7 2424
c9a2f333 2425 return TRUE;
252b5132 2426}
252b5132 2427
25dbc73a
AM		 2428/* Find a linker generated pointer with a given addend and type. */
2429
2430static elf_linker_section_pointers_t *
2431elf_find_pointer_linker_section
2432 (elf_linker_section_pointers_t *linker_pointers,
2433 bfd_vma addend,
2434 elf_linker_section_t *lsect)
252b5132 2435{
25dbc73a
AM		 2436 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2437 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2438 return linker_pointers;
252b5132 2439
25dbc73a
AM		 2440 return NULL;
2441}
2442
2443/* Allocate a pointer to live in a linker created section. */
2444
2445static bfd_boolean
2446elf_create_pointer_linker_section (bfd *abfd,
25dbc73a
AM		 2447 elf_linker_section_t *lsect,
2448 struct elf_link_hash_entry *h,
2449 const Elf_Internal_Rela *rel)
2450{
2451 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2452 elf_linker_section_pointers_t *linker_section_ptr;
2453 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2454 bfd_size_type amt;
2455
2456 BFD_ASSERT (lsect != NULL);
2457
2458 /* Is this a global symbol? */
2459 if (h != NULL)
2460 {
2461 struct ppc_elf_link_hash_entry *eh;
2462
2463 /* Has this symbol already been allocated? If so, our work is done. */
2464 eh = (struct ppc_elf_link_hash_entry *) h;
2465 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2466 rel->r_addend,
2467 lsect))
2468 return TRUE;
2469
2470 ptr_linker_section_ptr = &eh->linker_section_pointer;
25dbc73a
AM		 2471 }
2472 else
2473 {
2474 /* Allocation of a pointer to a local symbol. */
2475 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2476
2477 /* Allocate a table to hold the local symbols if first time. */
2478 if (!ptr)
2479 {
2480 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2481
2482 amt = num_symbols;
2483 amt *= sizeof (elf_linker_section_pointers_t *);
2484 ptr = bfd_zalloc (abfd, amt);
2485
2486 if (!ptr)
2487 return FALSE;
2488
2489 elf_local_ptr_offsets (abfd) = ptr;
2490 }
2491
2492 /* Has this symbol already been allocated? If so, our work is done. */
2493 if (elf_find_pointer_linker_section (ptr[r_symndx],
2494 rel->r_addend,
2495 lsect))
2496 return TRUE;
252b5132 2497
25dbc73a 2498 ptr_linker_section_ptr = &ptr[r_symndx];
25dbc73a 2499 }
41fcb14e 2500
25dbc73a
AM		 2501 /* Allocate space for a pointer in the linker section, and allocate
2502 a new pointer record from internal memory. */
2503 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2504 amt = sizeof (elf_linker_section_pointers_t);
2505 linker_section_ptr = bfd_alloc (abfd, amt);
41fcb14e 2506
25dbc73a 2507 if (!linker_section_ptr)
7619e7c7 2508 return FALSE;
41fcb14e 2509
25dbc73a
AM		 2510 linker_section_ptr->next = *ptr_linker_section_ptr;
2511 linker_section_ptr->addend = rel->r_addend;
2512 linker_section_ptr->lsect = lsect;
25dbc73a 2513 *ptr_linker_section_ptr = linker_section_ptr;
41fcb14e 2514
25dbc73a
AM		 2515 linker_section_ptr->offset = lsect->section->size;
2516 lsect->section->size += 4;
7619e7c7 2517
25dbc73a
AM		 2518#ifdef DEBUG
2519 fprintf (stderr,
2520 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2521 lsect->name, (long) linker_section_ptr->offset,
2522 (long) lsect->section->size);
2523#endif
7619e7c7
AM		 2524
2525 return TRUE;
41fcb14e
AM		 2526}
2527
b34976b6 2528static bfd_boolean
25dbc73a
AM		 2529update_local_sym_info (bfd *abfd,
2530 Elf_Internal_Shdr *symtab_hdr,
2531 unsigned long r_symndx,
2532 int tls_type)
252b5132 2533{
25dbc73a
AM		 2534 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2535 char *local_got_tls_masks;
252b5132 2536
25dbc73a 2537 if (local_got_refcounts == NULL)
252b5132 2538 {
25dbc73a
AM		 2539 bfd_size_type size = symtab_hdr->sh_info;
2540
2541 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2542 local_got_refcounts = bfd_zalloc (abfd, size);
2543 if (local_got_refcounts == NULL)
b34976b6 2544 return FALSE;
25dbc73a 2545 elf_local_got_refcounts (abfd) = local_got_refcounts;
252b5132 2546 }
41fcb14e 2547
25dbc73a
AM		 2548 local_got_refcounts[r_symndx] += 1;
2549 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2550 local_got_tls_masks[r_symndx] |= tls_type;
2551 return TRUE;
2552}
41fcb14e 2553
25dbc73a
AM		 2554static void
2555bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2556{
2557 (*_bfd_error_handler)
2558 (_("%B: relocation %s cannot be used when making a shared object"),
2559 abfd,
2560 ppc_elf_howto_table[r_type]->name);
2561 bfd_set_error (bfd_error_bad_value);
252b5132
RH		 2562}
2563
25dbc73a
AM		 2564/* Look through the relocs for a section during the first phase, and
2565 allocate space in the global offset table or procedure linkage
2566 table. */
252b5132 2567
b34976b6 2568static bfd_boolean
25dbc73a
AM		 2569ppc_elf_check_relocs (bfd *abfd,
2570 struct bfd_link_info *info,
2571 asection *sec,
2572 const Elf_Internal_Rela *relocs)
252b5132 2573{
7619e7c7 2574 struct ppc_elf_link_hash_table *htab;
25dbc73a
AM		 2575 Elf_Internal_Shdr *symtab_hdr;
2576 struct elf_link_hash_entry **sym_hashes;
2577 const Elf_Internal_Rela *rel;
2578 const Elf_Internal_Rela *rel_end;
2579 asection *sreloc;
2580
2581 if (info->relocatable)
2582 return TRUE;
252b5132
RH		 2583
2584#ifdef DEBUG
25dbc73a
AM		 2585 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2586 sec, abfd);
252b5132
RH		 2587#endif
2588
25dbc73a
AM		 2589 /* Initialize howto table if not already done. */
2590 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2591 ppc_elf_howto_init ();
2592
7619e7c7 2593 htab = ppc_elf_hash_table (info);
25dbc73a
AM		 2594 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2595 sym_hashes = elf_sym_hashes (abfd);
2596 sreloc = NULL;
2597
2598 rel_end = relocs + sec->reloc_count;
2599 for (rel = relocs; rel < rel_end; rel++)
2600 {
2601 unsigned long r_symndx;
2602 enum elf_ppc_reloc_type r_type;
2603 struct elf_link_hash_entry *h;
2604 int tls_type = 0;
2605
2606 r_symndx = ELF32_R_SYM (rel->r_info);
2607 if (r_symndx < symtab_hdr->sh_info)
2608 h = NULL;
2609 else
2610 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2611
2612 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2613 This shows up in particular in an R_PPC_ADDR32 in the eabi
2614 startup code. */
2615 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 2616 {
25dbc73a
AM		 2617 if (htab->got == NULL)
2618 {
2619 if (htab->elf.dynobj == NULL)
2620 htab->elf.dynobj = abfd;
2621 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2622 return FALSE;
2623 }
2624 }
252b5132 2625
25dbc73a
AM		 2626 r_type = ELF32_R_TYPE (rel->r_info);
2627 switch (r_type)
2628 {
2629 case R_PPC_GOT_TLSLD16:
2630 case R_PPC_GOT_TLSLD16_LO:
2631 case R_PPC_GOT_TLSLD16_HI:
2632 case R_PPC_GOT_TLSLD16_HA:
2633 htab->tlsld_got.refcount += 1;
2634 tls_type = TLS_TLS | TLS_LD;
2635 goto dogottls;
252b5132 2636
25dbc73a
AM		 2637 case R_PPC_GOT_TLSGD16:
2638 case R_PPC_GOT_TLSGD16_LO:
2639 case R_PPC_GOT_TLSGD16_HI:
2640 case R_PPC_GOT_TLSGD16_HA:
2641 tls_type = TLS_TLS | TLS_GD;
2642 goto dogottls;
2643
2644 case R_PPC_GOT_TPREL16:
2645 case R_PPC_GOT_TPREL16_LO:
2646 case R_PPC_GOT_TPREL16_HI:
2647 case R_PPC_GOT_TPREL16_HA:
2648 if (info->shared)
2649 info->flags |= DF_STATIC_TLS;
2650 tls_type = TLS_TLS | TLS_TPREL;
2651 goto dogottls;
2652
2653 case R_PPC_GOT_DTPREL16:
2654 case R_PPC_GOT_DTPREL16_LO:
2655 case R_PPC_GOT_DTPREL16_HI:
2656 case R_PPC_GOT_DTPREL16_HA:
2657 tls_type = TLS_TLS | TLS_DTPREL;
2658 dogottls:
2659 sec->has_tls_reloc = 1;
2660 /* Fall thru */
252b5132 2661
25dbc73a
AM		 2662 /* GOT16 relocations */
2663 case R_PPC_GOT16:
2664 case R_PPC_GOT16_LO:
2665 case R_PPC_GOT16_HI:
2666 case R_PPC_GOT16_HA:
2667 /* This symbol requires a global offset table entry. */
2668 if (htab->got == NULL)
2669 {
2670 if (htab->elf.dynobj == NULL)
2671 htab->elf.dynobj = abfd;
2672 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2673 return FALSE;
2674 }
2675 if (h != NULL)
2676 {
2677 h->got.refcount += 1;
2678 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2679 }
2680 else
2681 /* This is a global offset table entry for a local symbol. */
2682 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2683 return FALSE;
2684 break;
252b5132 2685
25dbc73a
AM		 2686 /* Indirect .sdata relocation. */
2687 case R_PPC_EMB_SDAI16:
2688 if (info->shared)
2689 {
2690 bad_shared_reloc (abfd, r_type);
2691 return FALSE;
2692 }
c9a2f333
AM		 2693 if (htab->sdata[0].section == NULL
2694 && !ppc_elf_create_linker_section (abfd, info, 0,
2695 &htab->sdata[0]))
2696 return FALSE;
76750a2f
AM		 2697 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
2698 h, rel))
25dbc73a
AM		 2699 return FALSE;
2700 break;
252b5132 2701
25dbc73a
AM		 2702 /* Indirect .sdata2 relocation. */
2703 case R_PPC_EMB_SDA2I16:
2704 if (info->shared)
2705 {
2706 bad_shared_reloc (abfd, r_type);
2707 return FALSE;
2708 }
c9a2f333
AM		 2709 if (htab->sdata[1].section == NULL
2710 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
2711 &htab->sdata[1]))
2712 return FALSE;
76750a2f
AM		 2713 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
2714 h, rel))
25dbc73a
AM		 2715 return FALSE;
2716 break;
252b5132 2717
25dbc73a
AM		 2718 case R_PPC_SDAREL16:
2719 case R_PPC_EMB_SDA2REL:
2720 case R_PPC_EMB_SDA21:
2721 case R_PPC_EMB_RELSDA:
2722 case R_PPC_EMB_NADDR32:
2723 case R_PPC_EMB_NADDR16:
2724 case R_PPC_EMB_NADDR16_LO:
2725 case R_PPC_EMB_NADDR16_HI:
2726 case R_PPC_EMB_NADDR16_HA:
2727 if (info->shared)
2728 {
2729 bad_shared_reloc (abfd, r_type);
2730 return FALSE;
2731 }
2732 break;
252b5132 2733
25dbc73a
AM		 2734 case R_PPC_PLT32:
2735 case R_PPC_PLTREL24:
2736 case R_PPC_PLTREL32:
2737 case R_PPC_PLT16_LO:
2738 case R_PPC_PLT16_HI:
2739 case R_PPC_PLT16_HA:
2740#ifdef DEBUG
2741 fprintf (stderr, "Reloc requires a PLT entry\n");
2742#endif
2743 /* This symbol requires a procedure linkage table entry. We
2744 actually build the entry in finish_dynamic_symbol,
2745 because this might be a case of linking PIC code without
2746 linking in any dynamic objects, in which case we don't
2747 need to generate a procedure linkage table after all. */
7619e7c7 2748
25dbc73a
AM		 2749 if (h == NULL)
2750 {
2751 /* It does not make sense to have a procedure linkage
2752 table entry for a local symbol. */
2753 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
2754 "local symbol"),
2755 abfd,
2756 sec,
2757 (long) rel->r_offset,
2758 ppc_elf_howto_table[r_type]->name);
2759 bfd_set_error (bfd_error_bad_value);
2760 return FALSE;
2761 }
ee05f2fe 2762
25dbc73a
AM		 2763 h->needs_plt = 1;
2764 h->plt.refcount++;
2765 break;
ee05f2fe 2766
25dbc73a
AM		 2767 /* The following relocations don't need to propagate the
2768 relocation if linking a shared object since they are
2769 section relative. */
2770 case R_PPC_SECTOFF:
2771 case R_PPC_SECTOFF_LO:
2772 case R_PPC_SECTOFF_HI:
2773 case R_PPC_SECTOFF_HA:
2774 case R_PPC_DTPREL16:
2775 case R_PPC_DTPREL16_LO:
2776 case R_PPC_DTPREL16_HI:
2777 case R_PPC_DTPREL16_HA:
2778 case R_PPC_TOC16:
2779 break;
252b5132 2780
25dbc73a
AM		 2781 /* This are just markers. */
2782 case R_PPC_TLS:
2783 case R_PPC_EMB_MRKREF:
2784 case R_PPC_NONE:
2785 case R_PPC_max:
2786 break;
252b5132 2787
25dbc73a
AM		 2788 /* These should only appear in dynamic objects. */
2789 case R_PPC_COPY:
2790 case R_PPC_GLOB_DAT:
2791 case R_PPC_JMP_SLOT:
2792 case R_PPC_RELATIVE:
2793 break;
252b5132 2794
25dbc73a
AM		 2795 /* These aren't handled yet. We'll report an error later. */
2796 case R_PPC_ADDR30:
2797 case R_PPC_EMB_RELSEC16:
2798 case R_PPC_EMB_RELST_LO:
2799 case R_PPC_EMB_RELST_HI:
2800 case R_PPC_EMB_RELST_HA:
2801 case R_PPC_EMB_BIT_FLD:
2802 break;
252b5132 2803
25dbc73a
AM		 2804 /* This refers only to functions defined in the shared library. */
2805 case R_PPC_LOCAL24PC:
2806 break;
252b5132 2807
25dbc73a
AM		 2808 /* This relocation describes the C++ object vtable hierarchy.
2809 Reconstruct it for later use during GC. */
2810 case R_PPC_GNU_VTINHERIT:
2811 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2812 return FALSE;
2813 break;
252b5132 2814
25dbc73a
AM		 2815 /* This relocation describes which C++ vtable entries are actually
2816 used. Record for later use during GC. */
2817 case R_PPC_GNU_VTENTRY:
2818 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2819 return FALSE;
2820 break;
252b5132 2821
25dbc73a
AM		 2822 /* We shouldn't really be seeing these. */
2823 case R_PPC_TPREL32:
2824 if (info->shared)
2825 info->flags |= DF_STATIC_TLS;
2826 goto dodyn;
252b5132 2827
25dbc73a
AM		 2828 /* Nor these. */
2829 case R_PPC_DTPMOD32:
2830 case R_PPC_DTPREL32:
2831 goto dodyn;
252b5132 2832
25dbc73a
AM		 2833 case R_PPC_TPREL16:
2834 case R_PPC_TPREL16_LO:
2835 case R_PPC_TPREL16_HI:
2836 case R_PPC_TPREL16_HA:
2837 if (info->shared)
2838 info->flags |= DF_STATIC_TLS;
2839 goto dodyn;
ee05f2fe 2840
25dbc73a
AM		 2841 /* When creating a shared object, we must copy these
2842 relocs into the output file. We create a reloc
2843 section in dynobj and make room for the reloc. */
2844 case R_PPC_REL24:
2845 case R_PPC_REL14:
2846 case R_PPC_REL14_BRTAKEN:
2847 case R_PPC_REL14_BRNTAKEN:
2848 case R_PPC_REL32:
2849 if (h == NULL
2850 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2851 break;
2852 /* fall through */
ee05f2fe 2853
25dbc73a
AM		 2854 case R_PPC_ADDR32:
2855 case R_PPC_ADDR24:
2856 case R_PPC_ADDR16:
2857 case R_PPC_ADDR16_LO:
2858 case R_PPC_ADDR16_HI:
2859 case R_PPC_ADDR16_HA:
2860 case R_PPC_ADDR14:
2861 case R_PPC_ADDR14_BRTAKEN:
2862 case R_PPC_ADDR14_BRNTAKEN:
2863 case R_PPC_UADDR32:
2864 case R_PPC_UADDR16:
2865 if (h != NULL && !info->shared)
2866 {
2867 /* We may need a plt entry if the symbol turns out to be
2868 a function defined in a dynamic object. */
2869 h->plt.refcount++;
7fce784e 2870
25dbc73a
AM		 2871 /* We may need a copy reloc too. */
2872 h->non_got_ref = 1;
2873 }
7619e7c7 2874
25dbc73a
AM		 2875 dodyn:
2876 /* If we are creating a shared library, and this is a reloc
2877 against a global symbol, or a non PC relative reloc
2878 against a local symbol, then we need to copy the reloc
2879 into the shared library. However, if we are linking with
2880 -Bsymbolic, we do not need to copy a reloc against a
2881 global symbol which is defined in an object we are
2882 including in the link (i.e., DEF_REGULAR is set). At
2883 this point we have not seen all the input files, so it is
2884 possible that DEF_REGULAR is not set now but will be set
2885 later (it is never cleared). In case of a weak definition,
2886 DEF_REGULAR may be cleared later by a strong definition in
2887 a shared library. We account for that possibility below by
2888 storing information in the dyn_relocs field of the hash
2889 table entry. A similar situation occurs when creating
2890 shared libraries and symbol visibility changes render the
2891 symbol local.
7619e7c7 2892
25dbc73a
AM		 2893 If on the other hand, we are creating an executable, we
2894 may need to keep relocations for symbols satisfied by a
2895 dynamic library if we manage to avoid copy relocs for the
2896 symbol. */
2897 if ((info->shared
2898 && (MUST_BE_DYN_RELOC (r_type)
2899 || (h != NULL
2900 && (! info->symbolic
2901 || h->root.type == bfd_link_hash_defweak
2902 || !h->def_regular))))
2903 || (ELIMINATE_COPY_RELOCS
2904 && !info->shared
2905 && (sec->flags & SEC_ALLOC) != 0
2906 && h != NULL
2907 && (h->root.type == bfd_link_hash_defweak
2908 || !h->def_regular)))
2909 {
2910 struct ppc_elf_dyn_relocs *p;
2911 struct ppc_elf_dyn_relocs **head;
7619e7c7 2912
25dbc73a
AM		 2913#ifdef DEBUG
2914 fprintf (stderr,
2915 "ppc_elf_check_relocs needs to "
2916 "create relocation for %s\n",
2917 (h && h->root.root.string
2918 ? h->root.root.string : "<unknown>"));
2919#endif
2920 if (sreloc == NULL)
2921 {
2922 const char *name;
7619e7c7 2923
25dbc73a
AM		 2924 name = (bfd_elf_string_from_elf_section
2925 (abfd,
2926 elf_elfheader (abfd)->e_shstrndx,
2927 elf_section_data (sec)->rel_hdr.sh_name));
2928 if (name == NULL)
2929 return FALSE;
7619e7c7 2930
25dbc73a
AM		 2931 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2932 && strcmp (bfd_get_section_name (abfd, sec),
2933 name + 5) == 0);
7619e7c7 2934
c9a2f333
AM		 2935 if (htab->elf.dynobj == NULL)
2936 htab->elf.dynobj = abfd;
25dbc73a
AM		 2937 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
2938 if (sreloc == NULL)
2939 {
2940 flagword flags;
7619e7c7 2941
25dbc73a
AM		 2942 sreloc = bfd_make_section (htab->elf.dynobj, name);
2943 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2944 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2945 if ((sec->flags & SEC_ALLOC) != 0)
2946 flags |= SEC_ALLOC | SEC_LOAD;
2947 if (sreloc == NULL
2948 || ! bfd_set_section_flags (htab->elf.dynobj,
2949 sreloc, flags)
2950 || ! bfd_set_section_alignment (htab->elf.dynobj,
2951 sreloc, 2))
2952 return FALSE;
2953 }
2954 elf_section_data (sec)->sreloc = sreloc;
2955 }
7619e7c7 2956
25dbc73a
AM		 2957 /* If this is a global symbol, we count the number of
2958 relocations we need for this symbol. */
2959 if (h != NULL)
2960 {
2961 head = &ppc_elf_hash_entry (h)->dyn_relocs;
2962 }
2963 else
2964 {
2965 /* Track dynamic relocs needed for local syms too.
2966 We really need local syms available to do this
2967 easily. Oh well. */
7619e7c7 2968
25dbc73a
AM		 2969 asection *s;
2970 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2971 sec, r_symndx);
2972 if (s == NULL)
2973 return FALSE;
7fce784e 2974
25dbc73a
AM		 2975 head = ((struct ppc_elf_dyn_relocs **)
2976 &elf_section_data (s)->local_dynrel);
2977 }
7fce784e 2978
25dbc73a
AM		 2979 p = *head;
2980 if (p == NULL || p->sec != sec)
2981 {
2982 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
2983 if (p == NULL)
2984 return FALSE;
2985 p->next = *head;
2986 *head = p;
2987 p->sec = sec;
2988 p->count = 0;
2989 p->pc_count = 0;
2990 }
2991
2992 p->count += 1;
2993 if (!MUST_BE_DYN_RELOC (r_type))
2994 p->pc_count += 1;
7619e7c7 2995 }
25dbc73a
AM		 2996
2997 break;
7619e7c7
AM		 2998 }
2999 }
ee05f2fe 3000
25dbc73a
AM		 3001 return TRUE;
3002}
3003\f
8853c3d3
AM		 3004/* Merge backend specific data from an object file to the output
3005 object file when linking. */
3006
3007static bfd_boolean
3008ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3009{
3010 flagword old_flags;
3011 flagword new_flags;
3012 bfd_boolean error;
3013
3014 if (!is_ppc_elf_target (ibfd->xvec)
3015 || !is_ppc_elf_target (obfd->xvec))
3016 return TRUE;
3017
3018 /* Check if we have the same endianess. */
3019 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3020 return FALSE;
3021
3022 new_flags = elf_elfheader (ibfd)->e_flags;
3023 old_flags = elf_elfheader (obfd)->e_flags;
3024 if (!elf_flags_init (obfd))
3025 {
3026 /* First call, no flags set. */
3027 elf_flags_init (obfd) = TRUE;
3028 elf_elfheader (obfd)->e_flags = new_flags;
3029 }
3030
3031 /* Compatible flags are ok. */
3032 else if (new_flags == old_flags)
3033 ;
3034
3035 /* Incompatible flags. */
3036 else
3037 {
3038 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3039 to be linked with either. */
3040 error = FALSE;
3041 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3042 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3043 {
3044 error = TRUE;
3045 (*_bfd_error_handler)
3046 (_("%B: compiled with -mrelocatable and linked with "
3047 "modules compiled normally"), ibfd);
3048 }
3049 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3050 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3051 {
3052 error = TRUE;
3053 (*_bfd_error_handler)
3054 (_("%B: compiled normally and linked with "
3055 "modules compiled with -mrelocatable"), ibfd);
3056 }
3057
3058 /* The output is -mrelocatable-lib iff both the input files are. */
3059 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3060 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3061
3062 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3063 but each input file is either -mrelocatable or -mrelocatable-lib. */
3064 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3065 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3066 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3067 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3068
3069 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3070 any module uses it. */
3071 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3072
3073 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3074 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3075
3076 /* Warn about any other mismatches. */
3077 if (new_flags != old_flags)
3078 {
3079 error = TRUE;
3080 (*_bfd_error_handler)
3081 (_("%B: uses different e_flags (0x%lx) fields "
3082 "than previous modules (0x%lx)"),
3083 ibfd, (long) new_flags, (long) old_flags);
3084 }
3085
3086 if (error)
3087 {
3088 bfd_set_error (bfd_error_bad_value);
3089 return FALSE;
3090 }
3091 }
3092
3093 return TRUE;
3094}
3095\f
25dbc73a
AM		 3096/* Return the section that should be marked against GC for a given
3097 relocation. */
586119b3 3098
25dbc73a
AM		 3099static asection *
3100ppc_elf_gc_mark_hook (asection *sec,
3101 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3102 Elf_Internal_Rela *rel,
3103 struct elf_link_hash_entry *h,
3104 Elf_Internal_Sym *sym)
3105{
3106 if (h != NULL)
ee05f2fe 3107 {
25dbc73a 3108 switch (ELF32_R_TYPE (rel->r_info))
ee05f2fe 3109 {
25dbc73a
AM		 3110 case R_PPC_GNU_VTINHERIT:
3111 case R_PPC_GNU_VTENTRY:
3112 break;
ee05f2fe 3113
25dbc73a
AM		 3114 default:
3115 switch (h->root.type)
ee05f2fe 3116 {
25dbc73a
AM		 3117 case bfd_link_hash_defined:
3118 case bfd_link_hash_defweak:
3119 return h->root.u.def.section;
3120
3121 case bfd_link_hash_common:
3122 return h->root.u.c.p->section;
3123
3124 default:
3125 break;
ee05f2fe
AM		 3126 }
3127 }
25dbc73a
AM		 3128 }
3129 else
3130 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
4e795f50 3131
25dbc73a
AM		 3132 return NULL;
3133}
a876ecf9 3134
25dbc73a
AM		 3135/* Update the got, plt and dynamic reloc reference counts for the
3136 section being removed. */
3137
3138static bfd_boolean
3139ppc_elf_gc_sweep_hook (bfd *abfd,
3140 struct bfd_link_info *info,
3141 asection *sec,
3142 const Elf_Internal_Rela *relocs)
3143{
3144 struct ppc_elf_link_hash_table *htab;
3145 Elf_Internal_Shdr *symtab_hdr;
3146 struct elf_link_hash_entry **sym_hashes;
3147 bfd_signed_vma *local_got_refcounts;
3148 const Elf_Internal_Rela *rel, *relend;
3149
3150 elf_section_data (sec)->local_dynrel = NULL;
3151
3152 htab = ppc_elf_hash_table (info);
3153 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3154 sym_hashes = elf_sym_hashes (abfd);
3155 local_got_refcounts = elf_local_got_refcounts (abfd);
3156
3157 relend = relocs + sec->reloc_count;
3158 for (rel = relocs; rel < relend; rel++)
3159 {
3160 unsigned long r_symndx;
3161 enum elf_ppc_reloc_type r_type;
3162 struct elf_link_hash_entry *h = NULL;
3163
3164 r_symndx = ELF32_R_SYM (rel->r_info);
3165 if (r_symndx >= symtab_hdr->sh_info)
a876ecf9 3166 {
25dbc73a
AM		 3167 struct ppc_elf_dyn_relocs **pp, *p;
3168 struct ppc_elf_link_hash_entry *eh;
3169
3170 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3171 while (h->root.type == bfd_link_hash_indirect
3172 || h->root.type == bfd_link_hash_warning)
3173 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3174 eh = (struct ppc_elf_link_hash_entry *) h;
3175
3176 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3177 if (p->sec == sec)
3178 {
3179 /* Everything must go for SEC. */
3180 *pp = p->next;
3181 break;
3182 }
a876ecf9 3183 }
ee05f2fe 3184
25dbc73a
AM		 3185 r_type = ELF32_R_TYPE (rel->r_info);
3186 switch (r_type)
ee05f2fe 3187 {
25dbc73a
AM		 3188 case R_PPC_GOT_TLSLD16:
3189 case R_PPC_GOT_TLSLD16_LO:
3190 case R_PPC_GOT_TLSLD16_HI:
3191 case R_PPC_GOT_TLSLD16_HA:
3192 htab->tlsld_got.refcount -= 1;
3193 /* Fall thru */
3194
3195 case R_PPC_GOT_TLSGD16:
3196 case R_PPC_GOT_TLSGD16_LO:
3197 case R_PPC_GOT_TLSGD16_HI:
3198 case R_PPC_GOT_TLSGD16_HA:
3199 case R_PPC_GOT_TPREL16:
3200 case R_PPC_GOT_TPREL16_LO:
3201 case R_PPC_GOT_TPREL16_HI:
3202 case R_PPC_GOT_TPREL16_HA:
3203 case R_PPC_GOT_DTPREL16:
3204 case R_PPC_GOT_DTPREL16_LO:
3205 case R_PPC_GOT_DTPREL16_HI:
3206 case R_PPC_GOT_DTPREL16_HA:
3207 case R_PPC_GOT16:
3208 case R_PPC_GOT16_LO:
3209 case R_PPC_GOT16_HI:
3210 case R_PPC_GOT16_HA:
3211 if (h != NULL)
ee05f2fe 3212 {
25dbc73a
AM		 3213 if (h->got.refcount > 0)
3214 h->got.refcount--;
ee05f2fe 3215 }
25dbc73a
AM		 3216 else if (local_got_refcounts != NULL)
3217 {
3218 if (local_got_refcounts[r_symndx] > 0)
3219 local_got_refcounts[r_symndx]--;
3220 }
3221 break;
ee05f2fe 3222
25dbc73a
AM		 3223 case R_PPC_REL24:
3224 case R_PPC_REL14:
3225 case R_PPC_REL14_BRTAKEN:
3226 case R_PPC_REL14_BRNTAKEN:
3227 case R_PPC_REL32:
3228 if (h == NULL
3229 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3230 break;
3231 /* Fall thru */
ee05f2fe 3232
25dbc73a
AM		 3233 case R_PPC_ADDR32:
3234 case R_PPC_ADDR24:
3235 case R_PPC_ADDR16:
3236 case R_PPC_ADDR16_LO:
3237 case R_PPC_ADDR16_HI:
3238 case R_PPC_ADDR16_HA:
3239 case R_PPC_ADDR14:
3240 case R_PPC_ADDR14_BRTAKEN:
3241 case R_PPC_ADDR14_BRNTAKEN:
3242 case R_PPC_UADDR32:
3243 case R_PPC_UADDR16:
3244 case R_PPC_PLT32:
3245 case R_PPC_PLTREL24:
3246 case R_PPC_PLT16_LO:
3247 case R_PPC_PLT16_HI:
3248 case R_PPC_PLT16_HA:
3249 if (h != NULL)
3250 {
3251 if (h->plt.refcount > 0)
3252 h->plt.refcount--;
3253 }
3254 break;
ee05f2fe 3255
25dbc73a
AM		 3256 default:
3257 break;
3258 }
7fce784e 3259 }
7fce784e
AS		 3260 return TRUE;
3261}
25dbc73a
AM		 3262\f
3263/* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7fce784e 3264
25dbc73a
AM		 3265asection *
3266ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
7fce784e 3267{
25dbc73a 3268 struct ppc_elf_link_hash_table *htab;
7fce784e 3269
25dbc73a
AM		 3270 htab = ppc_elf_hash_table (info);
3271 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3272 FALSE, FALSE, TRUE);
7fce784e 3273
25dbc73a 3274 return _bfd_elf_tls_setup (obfd, info);
7fce784e
AS		 3275}
3276
25dbc73a
AM		 3277/* Run through all the TLS relocs looking for optimization
3278 opportunities. */
252b5132 3279
25dbc73a
AM		 3280bfd_boolean
3281ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3282 struct bfd_link_info *info)
252b5132 3283{
7fce784e 3284 bfd *ibfd;
25dbc73a
AM		 3285 asection *sec;
3286 struct ppc_elf_link_hash_table *htab;
252b5132 3287
25dbc73a
AM		 3288 if (info->relocatable || info->shared)
3289 return TRUE;
252b5132 3290
7619e7c7 3291 htab = ppc_elf_hash_table (info);
25dbc73a 3292 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
252b5132 3293 {
25dbc73a
AM		 3294 Elf_Internal_Sym *locsyms = NULL;
3295 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
7619e7c7 3296
25dbc73a
AM		 3297 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3298 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3299 {
3300 Elf_Internal_Rela *relstart, *rel, *relend;
3301 int expecting_tls_get_addr;
252b5132 3302
25dbc73a
AM		 3303 /* Read the relocations. */
3304 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3305 info->keep_memory);
3306 if (relstart == NULL)
3307 return FALSE;
7619e7c7 3308
25dbc73a
AM		 3309 expecting_tls_get_addr = 0;
3310 relend = relstart + sec->reloc_count;
3311 for (rel = relstart; rel < relend; rel++)
3312 {
3313 enum elf_ppc_reloc_type r_type;
3314 unsigned long r_symndx;
3315 struct elf_link_hash_entry *h = NULL;
3316 char *tls_mask;
3317 char tls_set, tls_clear;
3318 bfd_boolean is_local;
7fce784e 3319
25dbc73a
AM		 3320 r_symndx = ELF32_R_SYM (rel->r_info);
3321 if (r_symndx >= symtab_hdr->sh_info)
3322 {
3323 struct elf_link_hash_entry **sym_hashes;
7fce784e 3324
25dbc73a
AM		 3325 sym_hashes = elf_sym_hashes (ibfd);
3326 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3327 while (h->root.type == bfd_link_hash_indirect
3328 || h->root.type == bfd_link_hash_warning)
3329 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3330 }
7619e7c7 3331
25dbc73a
AM		 3332 is_local = FALSE;
3333 if (h == NULL
3334 || !h->def_dynamic)
3335 is_local = TRUE;
7619e7c7 3336
25dbc73a
AM		 3337 r_type = ELF32_R_TYPE (rel->r_info);
3338 switch (r_type)
7619e7c7 3339 {
25dbc73a
AM		 3340 case R_PPC_GOT_TLSLD16:
3341 case R_PPC_GOT_TLSLD16_LO:
3342 case R_PPC_GOT_TLSLD16_HI:
3343 case R_PPC_GOT_TLSLD16_HA:
3344 /* These relocs should never be against a symbol
3345 defined in a shared lib. Leave them alone if
3346 that turns out to be the case. */
3347 expecting_tls_get_addr = 0;
3348 htab->tlsld_got.refcount -= 1;
3349 if (!is_local)
3350 continue;
3351
3352 /* LD -> LE */
3353 tls_set = 0;
3354 tls_clear = TLS_LD;
3355 expecting_tls_get_addr = 1;
3356 break;
3357
3358 case R_PPC_GOT_TLSGD16:
3359 case R_PPC_GOT_TLSGD16_LO:
3360 case R_PPC_GOT_TLSGD16_HI:
3361 case R_PPC_GOT_TLSGD16_HA:
3362 if (is_local)
3363 /* GD -> LE */
3364 tls_set = 0;
3365 else
3366 /* GD -> IE */
3367 tls_set = TLS_TLS | TLS_TPRELGD;
3368 tls_clear = TLS_GD;
3369 expecting_tls_get_addr = 1;
3370 break;
3371
3372 case R_PPC_GOT_TPREL16:
3373 case R_PPC_GOT_TPREL16_LO:
3374 case R_PPC_GOT_TPREL16_HI:
3375 case R_PPC_GOT_TPREL16_HA:
3376 expecting_tls_get_addr = 0;
3377 if (is_local)
3378 {
3379 /* IE -> LE */
3380 tls_set = 0;
3381 tls_clear = TLS_TPREL;
3382 break;
3383 }
3384 else
3385 continue;
3386
3387 case R_PPC_REL14:
3388 case R_PPC_REL14_BRTAKEN:
3389 case R_PPC_REL14_BRNTAKEN:
3390 case R_PPC_REL24:
3391 if (expecting_tls_get_addr
3392 && h != NULL
3393 && h == htab->tls_get_addr)
3394 {
3395 if (h->plt.refcount > 0)
3396 h->plt.refcount -= 1;
3397 }
3398 expecting_tls_get_addr = 0;
3399 continue;
3400
3401 default:
3402 expecting_tls_get_addr = 0;
3403 continue;
7619e7c7 3404 }
25dbc73a
AM		 3405
3406 if (h != NULL)
7619e7c7 3407 {
25dbc73a
AM		 3408 if (tls_set == 0)
3409 {
3410 /* We managed to get rid of a got entry. */
3411 if (h->got.refcount > 0)
3412 h->got.refcount -= 1;
3413 }
3414 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3415 }
3416 else
3417 {
3418 Elf_Internal_Sym *sym;
3419 bfd_signed_vma *lgot_refs;
3420 char *lgot_masks;
3421
3422 if (locsyms == NULL)
3423 {
3424 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3425 if (locsyms == NULL)
3426 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3427 symtab_hdr->sh_info,
3428 0, NULL, NULL, NULL);
3429 if (locsyms == NULL)
3430 {
3431 if (elf_section_data (sec)->relocs != relstart)
3432 free (relstart);
3433 return FALSE;
3434 }
3435 }
3436 sym = locsyms + r_symndx;
3437 lgot_refs = elf_local_got_refcounts (ibfd);
3438 if (lgot_refs == NULL)
3439 abort ();
3440 if (tls_set == 0)
3441 {
3442 /* We managed to get rid of a got entry. */
3443 if (lgot_refs[r_symndx] > 0)
3444 lgot_refs[r_symndx] -= 1;
3445 }
3446 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3447 tls_mask = &lgot_masks[r_symndx];
7619e7c7 3448 }
25dbc73a
AM		 3449
3450 *tls_mask |= tls_set;
3451 *tls_mask &= ~tls_clear;
7619e7c7 3452 }
25dbc73a
AM		 3453
3454 if (elf_section_data (sec)->relocs != relstart)
3455 free (relstart);
7619e7c7 3456 }
25dbc73a
AM		 3457
3458 if (locsyms != NULL
3459 && (symtab_hdr->contents != (unsigned char *) locsyms))
3460 {
3461 if (!info->keep_memory)
3462 free (locsyms);
3463 else
3464 symtab_hdr->contents = (unsigned char *) locsyms;
3465 }
7fce784e 3466 }
25dbc73a
AM		 3467 return TRUE;
3468}
3469\f
3470/* Adjust a symbol defined by a dynamic object and referenced by a
3471 regular object. The current definition is in some section of the
3472 dynamic object, but we're not including those sections. We have to
3473 change the definition to something the rest of the link can
3474 understand. */
7fce784e 3475
25dbc73a
AM		 3476static bfd_boolean
3477ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3478 struct elf_link_hash_entry *h)
3479{
3480 struct ppc_elf_link_hash_table *htab;
3481 asection *s;
3482 unsigned int power_of_two;
7fce784e 3483
25dbc73a
AM		 3484#ifdef DEBUG
3485 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3486 h->root.root.string);
3487#endif
252b5132 3488
25dbc73a
AM		 3489 /* Make sure we know what is going on here. */
3490 htab = ppc_elf_hash_table (info);
3491 BFD_ASSERT (htab->elf.dynobj != NULL
3492 && (h->needs_plt
3493 || h->u.weakdef != NULL
3494 || (h->def_dynamic
3495 && h->ref_regular
3496 && !h->def_regular)));
252b5132 3497
25dbc73a
AM		 3498 /* Deal with function syms. */
3499 if (h->type == STT_FUNC
3500 || h->needs_plt)
3501 {
3502 /* Clear procedure linkage table information for any symbol that
3503 won't need a .plt entry. */
3504 if (h->plt.refcount <= 0
3505 || SYMBOL_CALLS_LOCAL (info, h)
3506 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3507 && h->root.type == bfd_link_hash_undefweak))
252b5132 3508 {
25dbc73a 3509 /* A PLT entry is not required/allowed when:
252b5132 3510
25dbc73a
AM		 3511 1. We are not using ld.so; because then the PLT entry
3512 can't be set up, so we can't use one. In this case,
3513 ppc_elf_adjust_dynamic_symbol won't even be called.
252b5132 3514
25dbc73a
AM		 3515 2. GC has rendered the entry unused.
3516
3517 3. We know for certain that a call to this symbol
3518 will go to this object, or will remain undefined. */
3519 h->plt.offset = (bfd_vma) -1;
3520 h->needs_plt = 0;
3521 }
3522 return TRUE;
252b5132 3523 }
25dbc73a
AM		 3524 else
3525 h->plt.offset = (bfd_vma) -1;
252b5132 3526
25dbc73a
AM		 3527 /* If this is a weak symbol, and there is a real definition, the
3528 processor independent code will have arranged for us to see the
3529 real definition first, and we can just use the same value. */
3530 if (h->u.weakdef != NULL)
252b5132 3531 {
25dbc73a
AM		 3532 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3533 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3534 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3535 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3536 if (ELIMINATE_COPY_RELOCS)
3537 h->non_got_ref = h->u.weakdef->non_got_ref;
3538 return TRUE;
3539 }
dc810e39 3540
25dbc73a
AM		 3541 /* This is a reference to a symbol defined by a dynamic object which
3542 is not a function. */
252b5132 3543
25dbc73a
AM		 3544 /* If we are creating a shared library, we must presume that the
3545 only references to the symbol are via the global offset table.
3546 For such cases we need not do anything here; the relocations will
3547 be handled correctly by relocate_section. */
3548 if (info->shared)
3549 return TRUE;
252b5132 3550
25dbc73a
AM		 3551 /* If there are no references to this symbol that do not use the
3552 GOT, we don't need to generate a copy reloc. */
3553 if (!h->non_got_ref)
3554 return TRUE;
3555
3556 if (ELIMINATE_COPY_RELOCS)
3557 {
3558 struct ppc_elf_dyn_relocs *p;
3559 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
252b5132 3560 {
25dbc73a
AM		 3561 s = p->sec->output_section;
3562 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3563 break;
252b5132
RH		 3564 }
3565
25dbc73a
AM		 3566 /* If we didn't find any dynamic relocs in read-only sections, then
3567 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3568 if (p == NULL)
252b5132 3569 {
25dbc73a
AM		 3570 h->non_got_ref = 0;
3571 return TRUE;
252b5132
RH		 3572 }
3573 }
3574
25dbc73a
AM		 3575 /* We must allocate the symbol in our .dynbss section, which will
3576 become part of the .bss section of the executable. There will be
3577 an entry for this symbol in the .dynsym section. The dynamic
3578 object will contain position independent code, so all references
3579 from the dynamic object to this symbol will go through the global
3580 offset table. The dynamic linker will use the .dynsym entry to
3581 determine the address it must put in the global offset table, so
3582 both the dynamic object and the regular object will refer to the
3583 same memory location for the variable.
3584
3585 Of course, if the symbol is sufficiently small, we must instead
3586 allocate it in .sbss. FIXME: It would be better to do this if and
3587 only if there were actually SDAREL relocs for that symbol. */
3588
3589 if (h->size <= elf_gp_size (htab->elf.dynobj))
3590 s = htab->dynsbss;
3591 else
3592 s = htab->dynbss;
3593 BFD_ASSERT (s != NULL);
3594
3595 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3596 copy the initial value out of the dynamic object and into the
3597 runtime process image. We need to remember the offset into the
3598 .rela.bss section we are going to use. */
3599 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3600 {
3601 asection *srel;
3602
3603 if (h->size <= elf_gp_size (htab->elf.dynobj))
3604 srel = htab->relsbss;
3605 else
3606 srel = htab->relbss;
3607 BFD_ASSERT (srel != NULL);
3608 srel->size += sizeof (Elf32_External_Rela);
3609 h->needs_copy = 1;
3610 }
7619e7c7 3611
25dbc73a
AM		 3612 /* We need to figure out the alignment required for this symbol. I
3613 have no idea how ELF linkers handle this. */
3614 power_of_two = bfd_log2 (h->size);
3615 if (power_of_two > 4)
3616 power_of_two = 4;
7619e7c7 3617
25dbc73a
AM		 3618 /* Apply the required alignment. */
3619 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3620 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
3621 {
3622 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
7619e7c7 3623 return FALSE;
7619e7c7
AM		 3624 }
3625
25dbc73a
AM		 3626 /* Define the symbol as being at this point in the section. */
3627 h->root.u.def.section = s;
3628 h->root.u.def.value = s->size;
7619e7c7 3629
25dbc73a
AM		 3630 /* Increment the section size to make room for the symbol. */
3631 s->size += h->size;
7619e7c7 3632
25dbc73a
AM		 3633 return TRUE;
3634}
3635\f
3636/* Allocate space in associated reloc sections for dynamic relocs. */
252b5132 3637
b34976b6 3638static bfd_boolean
25dbc73a 3639allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
252b5132 3640{
25dbc73a
AM		 3641 struct bfd_link_info *info = inf;
3642 struct ppc_elf_link_hash_entry *eh;
7619e7c7 3643 struct ppc_elf_link_hash_table *htab;
25dbc73a 3644 struct ppc_elf_dyn_relocs *p;
252b5132 3645
25dbc73a 3646 if (h->root.type == bfd_link_hash_indirect)
b34976b6 3647 return TRUE;
252b5132 3648
25dbc73a
AM		 3649 if (h->root.type == bfd_link_hash_warning)
3650 /* When warning symbols are created, they **replace** the "real"
3651 entry in the hash table, thus we never get to see the real
3652 symbol in a hash traversal. So look at it now. */
3653 h = (struct elf_link_hash_entry *) h->root.u.i.link;
e47cd125 3654
7619e7c7 3655 htab = ppc_elf_hash_table (info);
25dbc73a
AM		 3656 if (htab->elf.dynamic_sections_created
3657 && h->plt.refcount > 0)
252b5132 3658 {
25dbc73a
AM		 3659 /* Make sure this symbol is output as a dynamic symbol. */
3660 if (h->dynindx == -1
3661 && !h->forced_local)
252b5132 3662 {
25dbc73a
AM		 3663 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3664 return FALSE;
252b5132
RH		 3665 }
3666
25dbc73a
AM		 3667 if (info->shared
3668 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
252b5132 3669 {
25dbc73a 3670 asection *s = htab->plt;
7619e7c7 3671
25dbc73a
AM		 3672 /* If this is the first .plt entry, make room for the special
3673 first entry. */
3674 if (s->size == 0)
3675 s->size += PLT_INITIAL_ENTRY_SIZE;
7619e7c7 3676
25dbc73a
AM		 3677 /* The PowerPC PLT is actually composed of two parts, the
3678 first part is 2 words (for a load and a jump), and then
3679 there is a remaining word available at the end. */
3680 h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
3681 + (PLT_SLOT_SIZE
3682 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
3683 / PLT_ENTRY_SIZE)));
7619e7c7 3684
25dbc73a
AM		 3685 /* If this symbol is not defined in a regular file, and we
3686 are not generating a shared library, then set the symbol
3687 to this location in the .plt. This is required to make
3688 function pointers compare as equal between the normal
3689 executable and the shared library. */
3690 if (! info->shared
3691 && !h->def_regular)
252b5132 3692 {
25dbc73a
AM		 3693 h->root.u.def.section = s;
3694 h->root.u.def.value = h->plt.offset;
252b5132 3695 }
252b5132 3696
25dbc73a
AM		 3697 /* Make room for this entry. After the 8192nd entry, room
3698 for two entries is allocated. */
3699 s->size += PLT_ENTRY_SIZE;
3700 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
3701 > PLT_NUM_SINGLE_ENTRIES)
3702 s->size += PLT_ENTRY_SIZE;
3703
3704 /* We also need to make an entry in the .rela.plt section. */
3705 htab->relplt->size += sizeof (Elf32_External_Rela);
3706 }
3707 else
3708 {
3709 h->plt.offset = (bfd_vma) -1;
3710 h->needs_plt = 0;
3711 }
3712 }
3713 else
3714 {
3715 h->plt.offset = (bfd_vma) -1;
3716 h->needs_plt = 0;
3717 }
3718
3719 eh = (struct ppc_elf_link_hash_entry *) h;
3720 if (eh->elf.got.refcount > 0)
3721 {
3722 /* Make sure this symbol is output as a dynamic symbol. */
3723 if (eh->elf.dynindx == -1
3724 && !eh->elf.forced_local)
3725 {
3726 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
b34976b6 3727 return FALSE;
25dbc73a 3728 }
252b5132 3729
25dbc73a
AM		 3730 if (eh->tls_mask == (TLS_TLS | TLS_LD)
3731 && !eh->elf.def_dynamic)
3732 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3733 eh->elf.got.offset = (bfd_vma) -1;
3734 else
3735 {
3736 bfd_boolean dyn;
3737 eh->elf.got.offset = htab->got->size;
3738 if ((eh->tls_mask & TLS_TLS) != 0)
252b5132 3739 {
25dbc73a
AM		 3740 if ((eh->tls_mask & TLS_LD) != 0)
3741 htab->got->size += 8;
3742 if ((eh->tls_mask & TLS_GD) != 0)
3743 htab->got->size += 8;
3744 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3745 htab->got->size += 4;
3746 if ((eh->tls_mask & TLS_DTPREL) != 0)
3747 htab->got->size += 4;
252b5132 3748 }
25dbc73a
AM		 3749 else
3750 htab->got->size += 4;
3751 dyn = htab->elf.dynamic_sections_created;
3752 if ((info->shared
3753 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
3754 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
3755 || eh->elf.root.type != bfd_link_hash_undefweak))
252b5132 3756 {
25dbc73a
AM		 3757 /* All the entries we allocated need relocs. */
3758 htab->relgot->size
3759 += ((htab->got->size - eh->elf.got.offset) / 4
3760 * sizeof (Elf32_External_Rela));
3761 /* Except LD only needs one. */
3762 if ((eh->tls_mask & TLS_LD) != 0)
3763 htab->relgot->size -= sizeof (Elf32_External_Rela);
252b5132 3764 }
25dbc73a
AM		 3765 }
3766 }
3767 else
3768 eh->elf.got.offset = (bfd_vma) -1;
252b5132 3769
25dbc73a
AM		 3770 if (eh->dyn_relocs == NULL)
3771 return TRUE;
252b5132 3772
25dbc73a
AM		 3773 /* In the shared -Bsymbolic case, discard space allocated for
3774 dynamic pc-relative relocs against symbols which turn out to be
3775 defined in regular objects. For the normal shared case, discard
3776 space for relocs that have become local due to symbol visibility
3777 changes. */
3778
3779 if (info->shared)
3780 {
3781 /* Relocs that use pc_count are those that appear on a call insn,
3782 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3783 generated via assembly. We want calls to protected symbols to
3784 resolve directly to the function rather than going via the plt.
3785 If people want function pointer comparisons to work as expected
3786 then they should avoid writing weird assembly. */
3787 if (SYMBOL_CALLS_LOCAL (info, h))
3788 {
3789 struct ppc_elf_dyn_relocs **pp;
3790
3791 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
252b5132 3792 {
25dbc73a
AM		 3793 p->count -= p->pc_count;
3794 p->pc_count = 0;
3795 if (p->count == 0)
3796 *pp = p->next;
3797 else
3798 pp = &p->next;
252b5132 3799 }
25dbc73a 3800 }
252b5132 3801
25dbc73a
AM		 3802 /* Also discard relocs on undefined weak syms with non-default
3803 visibility. */
3804 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3805 && h->root.type == bfd_link_hash_undefweak)
3806 eh->dyn_relocs = NULL;
7619e7c7 3807
25dbc73a
AM		 3808 /* Make sure undefined weak symbols are output as a dynamic symbol
3809 in PIEs. */
3810 if (info->pie
3811 && eh->dyn_relocs != NULL
3812 && h->dynindx == -1
3813 && h->root.type == bfd_link_hash_undefweak
3814 && !h->forced_local)
3815 {
3816 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3817 return FALSE;
3818 }
3819 }
3820 else if (ELIMINATE_COPY_RELOCS)
3821 {
3822 /* For the non-shared case, discard space for relocs against
3823 symbols which turn out to need copy relocs or are not
3824 dynamic. */
7619e7c7 3825
25dbc73a
AM		 3826 if (!h->non_got_ref
3827 && h->def_dynamic
3828 && !h->def_regular)
3829 {
3830 /* Make sure this symbol is output as a dynamic symbol.
3831 Undefined weak syms won't yet be marked as dynamic. */
3832 if (h->dynindx == -1
3833 && !h->forced_local)
3834 {
3835 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3836 return FALSE;
3837 }
7619e7c7 3838
25dbc73a
AM		 3839 /* If that succeeded, we know we'll be keeping all the
3840 relocs. */
3841 if (h->dynindx != -1)
3842 goto keep;
3843 }
252b5132 3844
25dbc73a 3845 eh->dyn_relocs = NULL;
252b5132 3846
25dbc73a
AM		 3847 keep: ;
3848 }
252b5132 3849
25dbc73a
AM		 3850 /* Finally, allocate space. */
3851 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3852 {
3853 asection *sreloc = elf_section_data (p->sec)->sreloc;
3854 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3855 }
252b5132 3856
25dbc73a
AM		 3857 return TRUE;
3858}
7619e7c7 3859
25dbc73a 3860/* Find any dynamic relocs that apply to read-only sections. */
7619e7c7 3861
25dbc73a
AM		 3862static bfd_boolean
3863readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
3864{
3865 struct ppc_elf_dyn_relocs *p;
7619e7c7 3866
25dbc73a
AM		 3867 if (h->root.type == bfd_link_hash_indirect)
3868 return TRUE;
252b5132 3869
25dbc73a
AM		 3870 if (h->root.type == bfd_link_hash_warning)
3871 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 3872
25dbc73a
AM		 3873 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3874 {
3875 asection *s = p->sec->output_section;
ee05f2fe 3876
25dbc73a
AM		 3877 if (s != NULL
3878 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
3879 == (SEC_READONLY | SEC_ALLOC)))
3880 {
3881 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
ee05f2fe 3882
25dbc73a
AM		 3883 /* Not an error, just cut short the traversal. */
3884 return FALSE;
3885 }
3886 }
3887 return TRUE;
3888}
3889
3890/* Set the sizes of the dynamic sections. */
3891
3892static bfd_boolean
3893ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3894 struct bfd_link_info *info)
3895{
3896 struct ppc_elf_link_hash_table *htab;
3897 asection *s;
3898 bfd_boolean relocs;
3899 bfd *ibfd;
7fce784e 3900
252b5132 3901#ifdef DEBUG
25dbc73a 3902 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
252b5132 3903#endif
252b5132 3904
25dbc73a
AM		 3905 htab = ppc_elf_hash_table (info);
3906 BFD_ASSERT (htab->elf.dynobj != NULL);
252b5132 3907
25dbc73a
AM		 3908 if (elf_hash_table (info)->dynamic_sections_created)
3909 {
3910 /* Set the contents of the .interp section to the interpreter. */
3911 if (info->executable)
3912 {
3913 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
3914 BFD_ASSERT (s != NULL);
3915 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3916 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3917 }
3918 }
252b5132 3919
25dbc73a
AM		 3920 if (htab->tlsld_got.refcount > 0)
3921 {
3922 htab->tlsld_got.offset = htab->got->size;
3923 htab->got->size += 8;
3924 if (info->shared)
3925 htab->relgot->size += sizeof (Elf32_External_Rela);
3926 }
3927 else
3928 htab->tlsld_got.offset = (bfd_vma) -1;
252b5132 3929
25dbc73a
AM		 3930 /* Set up .got offsets for local syms, and space for local dynamic
3931 relocs. */
3932 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3933 {
3934 bfd_signed_vma *local_got;
3935 bfd_signed_vma *end_local_got;
3936 char *lgot_masks;
3937 bfd_size_type locsymcount;
3938 Elf_Internal_Shdr *symtab_hdr;
3939 asection *srel;
7fce784e 3940
d2663f46 3941 if (!is_ppc_elf_target (ibfd->xvec))
25dbc73a 3942 continue;
7fce784e 3943
25dbc73a
AM		 3944 for (s = ibfd->sections; s != NULL; s = s->next)
3945 {
3946 struct ppc_elf_dyn_relocs *p;
252b5132 3947
25dbc73a
AM		 3948 for (p = ((struct ppc_elf_dyn_relocs *)
3949 elf_section_data (s)->local_dynrel);
3950 p != NULL;
3951 p = p->next)
3952 {
3953 if (!bfd_is_abs_section (p->sec)
3954 && bfd_is_abs_section (p->sec->output_section))
3955 {
3956 /* Input section has been discarded, either because
3957 it is a copy of a linkonce section or due to
3958 linker script /DISCARD/, so we'll be discarding
3959 the relocs too. */
7fce784e 3960 }
25dbc73a 3961 else if (p->count != 0)
7fce784e 3962 {
25dbc73a
AM		 3963 elf_section_data (p->sec)->sreloc->size
3964 += p->count * sizeof (Elf32_External_Rela);
3965 if ((p->sec->output_section->flags
3966 & (SEC_READONLY | SEC_ALLOC))
3967 == (SEC_READONLY | SEC_ALLOC))
3968 info->flags |= DF_TEXTREL;
7fce784e 3969 }
252b5132 3970 }
252b5132 3971 }
252b5132 3972
25dbc73a
AM		 3973 local_got = elf_local_got_refcounts (ibfd);
3974 if (!local_got)
3975 continue;
252b5132 3976
25dbc73a
AM		 3977 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3978 locsymcount = symtab_hdr->sh_info;
3979 end_local_got = local_got + locsymcount;
3980 lgot_masks = (char *) end_local_got;
3981 s = htab->got;
3982 srel = htab->relgot;
3983 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
3984 if (*local_got > 0)
3985 {
3986 if (*lgot_masks == (TLS_TLS | TLS_LD))
3987 {
3988 /* If just an LD reloc, we'll just use
3989 htab->tlsld_got.offset. */
3990 if (htab->tlsld_got.offset == (bfd_vma) -1)
3991 {
3992 htab->tlsld_got.offset = s->size;
3993 s->size += 8;
3994 if (info->shared)
3995 srel->size += sizeof (Elf32_External_Rela);
3996 }
3997 *local_got = (bfd_vma) -1;
3998 }
3999 else
4000 {
4001 *local_got = s->size;
4002 if ((*lgot_masks & TLS_TLS) != 0)
4003 {
4004 if ((*lgot_masks & TLS_GD) != 0)
4005 s->size += 8;
4006 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4007 s->size += 4;
4008 if ((*lgot_masks & TLS_DTPREL) != 0)
4009 s->size += 4;
4010 }
4011 else
4012 s->size += 4;
4013 if (info->shared)
4014 srel->size += ((s->size - *local_got) / 4
4015 * sizeof (Elf32_External_Rela));
4016 }
4017 }
4018 else
4019 *local_got = (bfd_vma) -1;
4020 }
252b5132 4021
25dbc73a
AM		 4022 /* Allocate space for global sym dynamic relocs. */
4023 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4024
4025 /* We've now determined the sizes of the various dynamic sections.
4026 Allocate memory for them. */
4027 relocs = FALSE;
4028 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
252b5132 4029 {
25dbc73a
AM		 4030 if ((s->flags & SEC_LINKER_CREATED) == 0)
4031 continue;
252b5132 4032
25dbc73a 4033 if (s == htab->plt
644285ef
AM		 4034 || s == htab->got
4035 || s == htab->sbss)
25dbc73a
AM		 4036 {
4037 /* Strip this section if we don't need it; see the
4038 comment below. */
4039 }
c9a2f333
AM		 4040 else if (s == htab->sdata[0].section
4041 || s == htab->sdata[1].section)
25dbc73a 4042 {
c9a2f333 4043 /* Strip these too. */
25dbc73a
AM		 4044 }
4045 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4046 {
4047 if (s->size == 0)
252b5132 4048 {
25dbc73a
AM		 4049 /* If we don't need this section, strip it from the
4050 output file. This is mostly to handle .rela.bss and
4051 .rela.plt. We must create both sections in
4052 create_dynamic_sections, because they must be created
4053 before the linker maps input sections to output
4054 sections. The linker does that before
4055 adjust_dynamic_symbol is called, and it is that
4056 function which decides whether anything needs to go
4057 into these sections. */
4058 }
4059 else
4060 {
4061 /* Remember whether there are any relocation sections. */
4062 relocs = TRUE;
252b5132 4063
25dbc73a
AM		 4064 /* We use the reloc_count field as a counter if we need
4065 to copy relocs into the output file. */
4066 s->reloc_count = 0;
252b5132
RH		 4067 }
4068 }
25dbc73a
AM		 4069 else
4070 {
4071 /* It's not one of our sections, so don't allocate space. */
4072 continue;
4073 }
252b5132 4074
25dbc73a
AM		 4075 if (s->size == 0)
4076 {
4077 _bfd_strip_section_from_output (info, s);
4078 continue;
4079 }
7fce784e 4080
644285ef
AM		 4081 if (s == htab->sbss)
4082 continue;
4083
25dbc73a
AM		 4084 /* Allocate memory for the section contents. */
4085 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4086 if (s->contents == NULL)
4087 return FALSE;
4088 }
252b5132 4089
25dbc73a 4090 if (htab->elf.dynamic_sections_created)
7619e7c7 4091 {
25dbc73a
AM		 4092 /* Add some entries to the .dynamic section. We fill in the
4093 values later, in ppc_elf_finish_dynamic_sections, but we
4094 must add the entries now so that we get the correct size for
4095 the .dynamic section. The DT_DEBUG entry is filled in by the
4096 dynamic linker and used by the debugger. */
4097#define add_dynamic_entry(TAG, VAL) \
4098 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
252b5132 4099
25dbc73a 4100 if (info->executable)
7619e7c7 4101 {
25dbc73a
AM		 4102 if (!add_dynamic_entry (DT_DEBUG, 0))
4103 return FALSE;
7619e7c7
AM		 4104 }
4105
25dbc73a 4106 if (htab->plt != NULL && htab->plt->size != 0)
7619e7c7 4107 {
25dbc73a
AM		 4108 if (!add_dynamic_entry (DT_PLTGOT, 0)
4109 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4110 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4111 || !add_dynamic_entry (DT_JMPREL, 0))
4112 return FALSE;
4113 }
7619e7c7 4114
25dbc73a
AM		 4115 if (relocs)
4116 {
4117 if (!add_dynamic_entry (DT_RELA, 0)
4118 || !add_dynamic_entry (DT_RELASZ, 0)
4119 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4120 return FALSE;
4121 }
7619e7c7 4122
25dbc73a
AM		 4123 /* If any dynamic relocs apply to a read-only section, then we
4124 need a DT_TEXTREL entry. */
4125 if ((info->flags & DF_TEXTREL) == 0)
4126 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4127 info);
7619e7c7 4128
25dbc73a
AM		 4129 if ((info->flags & DF_TEXTREL) != 0)
4130 {
4131 if (!add_dynamic_entry (DT_TEXTREL, 0))
4132 return FALSE;
7619e7c7
AM		 4133 }
4134 }
25dbc73a
AM		 4135#undef add_dynamic_entry
4136
7619e7c7
AM		 4137 return TRUE;
4138}
25dbc73a
AM		 4139\f
4140#define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4141
4142static const int shared_stub_entry[] =
4143 {
4144 0x7c0802a6, /* mflr 0 */
4145 0x429f0005, /* bcl 20, 31, .Lxxx */
4146 0x7d6802a6, /* mflr 11 */
4147 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4148 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4149 0x7c0803a6, /* mtlr 0 */
4150 0x7d6903a6, /* mtctr 11 */
4151 0x4e800420, /* bctr */
4152 };
4153
4154static const int stub_entry[] =
4155 {
4156 0x3d600000, /* lis 11,xxx@ha */
4157 0x396b0000, /* addi 11,11,xxx@l */
4158 0x7d6903a6, /* mtctr 11 */
4159 0x4e800420, /* bctr */
4160 };
4161
4162static bfd_boolean
4163ppc_elf_relax_section (bfd *abfd,
4164 asection *isec,
4165 struct bfd_link_info *link_info,
4166 bfd_boolean *again)
4167{
4168 struct one_fixup
4169 {
4170 struct one_fixup *next;
4171 asection *tsec;
4172 bfd_vma toff;
4173 bfd_vma trampoff;
4174 };
7619e7c7 4175
25dbc73a
AM		 4176 Elf_Internal_Shdr *symtab_hdr;
4177 bfd_byte *contents = NULL;
4178 Elf_Internal_Sym *isymbuf = NULL;
4179 Elf_Internal_Rela *internal_relocs = NULL;
4180 Elf_Internal_Rela *irel, *irelend;
4181 struct one_fixup *fixups = NULL;
4182 bfd_boolean changed;
4183 struct ppc_elf_link_hash_table *ppc_info;
4184 bfd_size_type trampoff;
7619e7c7 4185
25dbc73a 4186 *again = FALSE;
7619e7c7 4187
25dbc73a
AM		 4188 /* Nothing to do if there are no relocations. */
4189 if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0)
4190 return TRUE;
7619e7c7 4191
25dbc73a
AM		 4192 trampoff = (isec->size + 3) & (bfd_vma) -4;
4193 /* Space for a branch around any trampolines. */
4194 trampoff += 4;
7619e7c7 4195
25dbc73a 4196 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
7619e7c7 4197
25dbc73a
AM		 4198 /* Get a copy of the native relocations. */
4199 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4200 link_info->keep_memory);
4201 if (internal_relocs == NULL)
4202 goto error_return;
7619e7c7 4203
25dbc73a
AM		 4204 ppc_info = ppc_elf_hash_table (link_info);
4205 irelend = internal_relocs + isec->reloc_count;
7619e7c7 4206
25dbc73a 4207 for (irel = internal_relocs; irel < irelend; irel++)
7619e7c7 4208 {
25dbc73a
AM		 4209 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4210 bfd_vma symaddr, reladdr, toff, roff;
4211 asection *tsec;
4212 struct one_fixup *f;
4213 size_t insn_offset = 0;
4214 bfd_vma max_branch_offset, val;
4215 bfd_byte *hit_addr;
4216 unsigned long t0;
4217 unsigned char sym_type;
7619e7c7 4218
25dbc73a
AM		 4219 switch (r_type)
4220 {
4221 case R_PPC_REL24:
4222 case R_PPC_LOCAL24PC:
4223 case R_PPC_PLTREL24:
4224 max_branch_offset = 1 << 25;
4225 break;
7619e7c7 4226
25dbc73a
AM		 4227 case R_PPC_REL14:
4228 case R_PPC_REL14_BRTAKEN:
4229 case R_PPC_REL14_BRNTAKEN:
4230 max_branch_offset = 1 << 15;
4231 break;
7619e7c7 4232
25dbc73a
AM		 4233 default:
4234 continue;
4235 }
7619e7c7 4236
25dbc73a
AM		 4237 /* Get the value of the symbol referred to by the reloc. */
4238 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4239 {
4240 /* A local symbol. */
4241 Elf_Internal_Sym *isym;
7fce784e 4242
25dbc73a
AM		 4243 /* Read this BFD's local symbols. */
4244 if (isymbuf == NULL)
4245 {
4246 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4247 if (isymbuf == NULL)
4248 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4249 symtab_hdr->sh_info, 0,
4250 NULL, NULL, NULL);
4251 if (isymbuf == 0)
4252 goto error_return;
4253 }
4254 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4255 if (isym->st_shndx == SHN_UNDEF)
4256 continue; /* We can't do anything with undefined symbols. */
4257 else if (isym->st_shndx == SHN_ABS)
4258 tsec = bfd_abs_section_ptr;
4259 else if (isym->st_shndx == SHN_COMMON)
4260 tsec = bfd_com_section_ptr;
4261 else
4262 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
7fce784e 4263
25dbc73a
AM		 4264 toff = isym->st_value;
4265 sym_type = ELF_ST_TYPE (isym->st_info);
4266 }
4267 else
4268 {
4269 /* Global symbol handling. */
4270 unsigned long indx;
4271 struct elf_link_hash_entry *h;
7619e7c7 4272
25dbc73a
AM		 4273 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4274 h = elf_sym_hashes (abfd)[indx];
7619e7c7 4275
25dbc73a
AM		 4276 while (h->root.type == bfd_link_hash_indirect
4277 || h->root.type == bfd_link_hash_warning)
4278 h = (struct elf_link_hash_entry *) h->root.u.i.link;
7619e7c7 4279
25dbc73a
AM		 4280 if (r_type == R_PPC_PLTREL24
4281 && ppc_info->plt != NULL
4282 && h->plt.offset != (bfd_vma) -1)
4283 {
4284 tsec = ppc_info->plt;
4285 toff = h->plt.offset;
4286 }
4287 else if (h->root.type == bfd_link_hash_defined
4288 || h->root.type == bfd_link_hash_defweak)
4289 {
4290 tsec = h->root.u.def.section;
4291 toff = h->root.u.def.value;
4292 }
4293 else
4294 continue;
7619e7c7 4295
25dbc73a
AM		 4296 sym_type = h->type;
4297 }
7619e7c7 4298
25dbc73a
AM		 4299 /* If the branch and target are in the same section, you have
4300 no hope of adding stubs. We'll error out later should the
4301 branch overflow. */
4302 if (tsec == isec)
4303 continue;
4304
4305 /* There probably isn't any reason to handle symbols in
4306 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4307 attribute for a code section, and we are only looking at
4308 branches. However, implement it correctly here as a
4309 reference for other target relax_section functions. */
4310 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4311 {
4312 /* At this stage in linking, no SEC_MERGE symbol has been
4313 adjusted, so all references to such symbols need to be
4314 passed through _bfd_merged_section_offset. (Later, in
4315 relocate_section, all SEC_MERGE symbols *except* for
4316 section symbols have been adjusted.)
4317
4318 gas may reduce relocations against symbols in SEC_MERGE
4319 sections to a relocation against the section symbol when
4320 the original addend was zero. When the reloc is against
4321 a section symbol we should include the addend in the
4322 offset passed to _bfd_merged_section_offset, since the
4323 location of interest is the original symbol. On the
4324 other hand, an access to "sym+addend" where "sym" is not
4325 a section symbol should not include the addend; Such an
4326 access is presumed to be an offset from "sym"; The
4327 location of interest is just "sym". */
4328 if (sym_type == STT_SECTION)
4329 toff += irel->r_addend;
7619e7c7 4330
25dbc73a
AM		 4331 toff = _bfd_merged_section_offset (abfd, &tsec,
4332 elf_section_data (tsec)->sec_info,
4333 toff);
7619e7c7 4334
25dbc73a
AM		 4335 if (sym_type != STT_SECTION)
4336 toff += irel->r_addend;
4337 }
4338 else
4339 toff += irel->r_addend;
7619e7c7 4340
25dbc73a 4341 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
7619e7c7 4342
25dbc73a
AM		 4343 roff = irel->r_offset;
4344 reladdr = isec->output_section->vma + isec->output_offset + roff;
7619e7c7 4345
25dbc73a
AM		 4346 /* If the branch is in range, no need to do anything. */
4347 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4348 continue;
252b5132 4349
25dbc73a
AM		 4350 /* Look for an existing fixup to this address. */
4351 for (f = fixups; f ; f = f->next)
4352 if (f->tsec == tsec && f->toff == toff)
4353 break;
4354
4355 if (f == NULL)
7619e7c7 4356 {
25dbc73a
AM		 4357 size_t size;
4358 unsigned long stub_rtype;
252b5132 4359
25dbc73a
AM		 4360 val = trampoff - roff;
4361 if (val >= max_branch_offset)
4362 /* Oh dear, we can't reach a trampoline. Don't try to add
4363 one. We'll report an error later. */
4364 continue;
252b5132 4365
25dbc73a
AM		 4366 if (link_info->shared)
4367 {
4368 size = 4 * ARRAY_SIZE (shared_stub_entry);
4369 insn_offset = 12;
4370 stub_rtype = R_PPC_RELAX32PC;
4371 }
4372 else
4373 {
4374 size = 4 * ARRAY_SIZE (stub_entry);
4375 insn_offset = 0;
4376 stub_rtype = R_PPC_RELAX32;
4377 }
dc810e39 4378
25dbc73a
AM		 4379 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4380 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4381 abort ();
4382 if (tsec == ppc_info->plt)
4383 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
252b5132 4384
25dbc73a
AM		 4385 /* Hijack the old relocation. Since we need two
4386 relocations for this use a "composite" reloc. */
4387 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4388 stub_rtype);
4389 irel->r_offset = trampoff + insn_offset;
252b5132 4390
25dbc73a
AM		 4391 /* Record the fixup so we don't do it again this section. */
4392 f = bfd_malloc (sizeof (*f));
4393 f->next = fixups;
4394 f->tsec = tsec;
4395 f->toff = toff;
4396 f->trampoff = trampoff;
4397 fixups = f;
252b5132 4398
25dbc73a
AM		 4399 trampoff += size;
4400 }
4401 else
4402 {
4403 val = f->trampoff - roff;
4404 if (val >= max_branch_offset)
4405 continue;
252b5132 4406
25dbc73a
AM		 4407 /* Nop out the reloc, since we're finalizing things here. */
4408 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4409 }
252b5132 4410
25dbc73a
AM		 4411 /* Get the section contents. */
4412 if (contents == NULL)
4413 {
4414 /* Get cached copy if it exists. */
4415 if (elf_section_data (isec)->this_hdr.contents != NULL)
4416 contents = elf_section_data (isec)->this_hdr.contents;
4417 else
4418 {
4419 /* Go get them off disk. */
4420 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4421 goto error_return;
4422 }
4423 }
252b5132 4424
25dbc73a
AM		 4425 /* Fix up the existing branch to hit the trampoline. */
4426 hit_addr = contents + roff;
4427 switch (r_type)
4428 {
4429 case R_PPC_REL24:
4430 case R_PPC_LOCAL24PC:
4431 case R_PPC_PLTREL24:
4432 t0 = bfd_get_32 (abfd, hit_addr);
4433 t0 &= ~0x3fffffc;
4434 t0 |= val & 0x3fffffc;
4435 bfd_put_32 (abfd, t0, hit_addr);
4436 break;
252b5132 4437
25dbc73a
AM		 4438 case R_PPC_REL14:
4439 case R_PPC_REL14_BRTAKEN:
4440 case R_PPC_REL14_BRNTAKEN:
4441 t0 = bfd_get_32 (abfd, hit_addr);
4442 t0 &= ~0xfffc;
4443 t0 |= val & 0xfffc;
4444 bfd_put_32 (abfd, t0, hit_addr);
4445 break;
4446 }
4447 }
252b5132 4448
25dbc73a
AM		 4449 /* Write out the trampolines. */
4450 changed = fixups != NULL;
4451 if (fixups != NULL)
4452 {
4453 const int *stub;
4454 bfd_byte *dest;
4455 bfd_vma val;
4456 int i, size;
252b5132 4457
25dbc73a
AM		 4458 do
4459 {
4460 struct one_fixup *f = fixups;
4461 fixups = fixups->next;
4462 free (f);
4463 }
4464 while (fixups);
252b5132 4465
25dbc73a
AM		 4466 contents = bfd_realloc (contents, trampoff);
4467 if (contents == NULL)
4468 goto error_return;
252b5132 4469
25dbc73a
AM		 4470 isec->size = (isec->size + 3) & (bfd_vma) -4;
4471 /* Branch around the trampolines. */
4472 val = trampoff - isec->size + 0x48000000;
4473 dest = contents + isec->size;
4474 isec->size = trampoff;
4475 bfd_put_32 (abfd, val, dest);
4476 dest += 4;
252b5132 4477
25dbc73a
AM		 4478 if (link_info->shared)
4479 {
4480 stub = shared_stub_entry;
4481 size = ARRAY_SIZE (shared_stub_entry);
4482 }
4483 else
4484 {
4485 stub = stub_entry;
4486 size = ARRAY_SIZE (stub_entry);
4487 }
252b5132 4488
25dbc73a
AM		 4489 i = 0;
4490 while (dest < contents + trampoff)
252b5132 4491 {
25dbc73a
AM		 4492 bfd_put_32 (abfd, stub[i], dest);
4493 i++;
4494 if (i == size)
4495 i = 0;
4496 dest += 4;
252b5132 4497 }
25dbc73a 4498 BFD_ASSERT (i == 0);
252b5132
RH		 4499 }
4500
25dbc73a
AM		 4501 if (isymbuf != NULL
4502 && symtab_hdr->contents != (unsigned char *) isymbuf)
252b5132 4503 {
25dbc73a
AM		 4504 if (! link_info->keep_memory)
4505 free (isymbuf);
252b5132 4506 else
25dbc73a
AM		 4507 {
4508 /* Cache the symbols for elf_link_input_bfd. */
4509 symtab_hdr->contents = (unsigned char *) isymbuf;
4510 }
252b5132
RH		 4511 }
4512
25dbc73a
AM		 4513 if (contents != NULL
4514 && elf_section_data (isec)->this_hdr.contents != contents)
4515 {
4516 if (!changed && !link_info->keep_memory)
4517 free (contents);
4518 else
4519 {
4520 /* Cache the section contents for elf_link_input_bfd. */
4521 elf_section_data (isec)->this_hdr.contents = contents;
4522 }
4523 }
252b5132 4524
25dbc73a
AM		 4525 if (elf_section_data (isec)->relocs != internal_relocs)
4526 {
4527 if (!changed)
4528 free (internal_relocs);
4529 else
4530 elf_section_data (isec)->relocs = internal_relocs;
4531 }
252b5132 4532
25dbc73a 4533 *again = changed;
b34976b6 4534 return TRUE;
25dbc73a
AM		 4535
4536 error_return:
4537 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
4538 free (isymbuf);
4539 if (contents != NULL
4540 && elf_section_data (isec)->this_hdr.contents != contents)
4541 free (contents);
4542 if (internal_relocs != NULL
4543 && elf_section_data (isec)->relocs != internal_relocs)
4544 free (internal_relocs);
4545 return FALSE;
252b5132 4546}
252b5132 4547\f
f85f57ad
AM		 4548/* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
4549 set here rather than via PROVIDE in the default linker script,
4550 because using PROVIDE inside an output section statement results in
4551 unnecessary output sections. Using PROVIDE outside an output section
4552 statement runs the risk of section alignment affecting where the
4553 section starts. */
c9a2f333
AM		 4554
4555bfd_boolean
4556ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
4557{
4558 struct ppc_elf_link_hash_table *htab;
4559 unsigned i;
f85f57ad
AM		 4560 asection *s;
4561 bfd_vma val;
c9a2f333
AM		 4562
4563 htab = ppc_elf_hash_table (info);
4564
4565 for (i = 0; i < 2; i++)
4566 {
4567 elf_linker_section_t *lsect = &htab->sdata[i];
c9a2f333
AM		 4568
4569 s = lsect->section;
4570 if (s != NULL)
4571 s = s->output_section;
4572 if (s == NULL)
4573 s = bfd_get_section_by_name (obfd, lsect->name);
4574 if (s == NULL)
4575 s = bfd_get_section_by_name (obfd, lsect->bss_name);
4576
4577 val = 0;
4578 if (s != NULL)
4579 val = s->vma + 32768;
4580 lsect->sym_val = val;
4581
81e1b023 4582 _bfd_elf_provide_symbol (info, lsect->sym_name, val);
c9a2f333 4583 }
f85f57ad
AM		 4584
4585 s = bfd_get_section_by_name (obfd, ".sbss");
4586 val = 0;
4587 if (s != NULL)
4588 val = s->vma;
81e1b023
L		 4589 _bfd_elf_provide_symbol (info, "__sbss_start", val);
4590 _bfd_elf_provide_symbol (info, "___sbss_start", val);
f85f57ad
AM		 4591 if (s != NULL)
4592 val += s->size;
81e1b023
L		 4593 _bfd_elf_provide_symbol (info, "__sbss_end", val);
4594 _bfd_elf_provide_symbol (info, "___sbss_end", val);
c9a2f333
AM		 4595 return TRUE;
4596}
4597\f
25dbc73a 4598/* Fill in the address for a pointer generated in a linker section. */
252b5132 4599
25dbc73a 4600static bfd_vma
76750a2f 4601elf_finish_pointer_linker_section (bfd *input_bfd,
25dbc73a
AM		 4602 elf_linker_section_t *lsect,
4603 struct elf_link_hash_entry *h,
4604 bfd_vma relocation,
2bb04cf2 4605 const Elf_Internal_Rela *rel)
25dbc73a
AM		 4606{
4607 elf_linker_section_pointers_t *linker_section_ptr;
252b5132 4608
25dbc73a 4609 BFD_ASSERT (lsect != NULL);
252b5132 4610
25dbc73a 4611 if (h != NULL)
252b5132 4612 {
25dbc73a
AM		 4613 /* Handle global symbol. */
4614 struct ppc_elf_link_hash_entry *eh;
252b5132 4615
25dbc73a 4616 eh = (struct ppc_elf_link_hash_entry *) h;
76750a2f
AM		 4617 BFD_ASSERT (eh->elf.def_regular);
4618 linker_section_ptr = eh->linker_section_pointer;
25dbc73a
AM		 4619 }
4620 else
4621 {
4622 /* Handle local symbol. */
4623 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
76750a2f 4624
25dbc73a 4625 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
76750a2f
AM		 4626 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
4627 }
252b5132 4628
76750a2f
AM		 4629 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
4630 rel->r_addend,
4631 lsect);
4632 BFD_ASSERT (linker_section_ptr != NULL);
25dbc73a 4633
76750a2f
AM		 4634 /* Offset will always be a multiple of four, so use the bottom bit
4635 as a "written" flag. */
4636 if ((linker_section_ptr->offset & 1) == 0)
4637 {
4638 bfd_put_32 (lsect->section->owner,
4639 relocation + linker_section_ptr->addend,
4640 lsect->section->contents + linker_section_ptr->offset);
4641 linker_section_ptr->offset += 1;
252b5132
RH		 4642 }
4643
25dbc73a 4644 relocation = (lsect->section->output_offset
76750a2f 4645 + linker_section_ptr->offset - 1
c9a2f333 4646 - 0x8000);
252b5132 4647
25dbc73a
AM		 4648#ifdef DEBUG
4649 fprintf (stderr,
4650 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
4651 lsect->name, (long) relocation, (long) relocation);
4652#endif
252b5132 4653
25dbc73a
AM		 4654 /* Subtract out the addend, because it will get added back in by the normal
4655 processing. */
4656 return relocation - linker_section_ptr->addend;
252b5132 4657}
25dbc73a 4658
252b5132
RH		 4659/* The RELOCATE_SECTION function is called by the ELF backend linker
4660 to handle the relocations for a section.
4661
4662 The relocs are always passed as Rela structures; if the section
4663 actually uses Rel structures, the r_addend field will always be
4664 zero.
4665
4666 This function is responsible for adjust the section contents as
4667 necessary, and (if using Rela relocs and generating a
1049f94e 4668 relocatable output file) adjusting the reloc addend as
252b5132
RH		 4669 necessary.
4670
4671 This function does not have to worry about setting the reloc
4672 address or the reloc symbol index.
4673
4674 LOCAL_SYMS is a pointer to the swapped in local symbols.
4675
4676 LOCAL_SECTIONS is an array giving the section in the input file
4677 corresponding to the st_shndx field of each local symbol.
4678
4679 The global hash table entry for the global symbols can be found
4680 via elf_sym_hashes (input_bfd).
4681
1049f94e 4682 When generating relocatable output, this function must handle
252b5132
RH		 4683 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4684 going to be the section symbol corresponding to the output
4685 section, which means that the addend must be adjusted
4686 accordingly. */
4687
b34976b6 4688static bfd_boolean
55fd94b0
AM		 4689ppc_elf_relocate_section (bfd *output_bfd,
4690 struct bfd_link_info *info,
4691 bfd *input_bfd,
4692 asection *input_section,
4693 bfd_byte *contents,
4694 Elf_Internal_Rela *relocs,
4695 Elf_Internal_Sym *local_syms,
4696 asection **local_sections)
252b5132 4697{
7619e7c7
AM		 4698 Elf_Internal_Shdr *symtab_hdr;
4699 struct elf_link_hash_entry **sym_hashes;
4700 struct ppc_elf_link_hash_table *htab;
4701 Elf_Internal_Rela *rel;
4702 Elf_Internal_Rela *relend;
4703 Elf_Internal_Rela outrel;
4704 bfd_byte *loc;
b34976b6 4705 asection *sreloc = NULL;
252b5132 4706 bfd_vma *local_got_offsets;
b34976b6 4707 bfd_boolean ret = TRUE;
b34976b6 4708
252b5132 4709#ifdef DEBUG
d003868e
AM		 4710 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
4711 "%ld relocations%s",
4712 input_bfd, input_section,
4713 (long) input_section->reloc_count,
4714 (info->relocatable) ? " (relocatable)" : "");
252b5132
RH		 4715#endif
4716
1049f94e 4717 if (info->relocatable)
b34976b6 4718 return TRUE;
b491616a 4719
e47cd125 4720 /* Initialize howto table if not already done. */
8da6118f 4721 if (!ppc_elf_howto_table[R_PPC_ADDR32])
252b5132
RH		 4722 ppc_elf_howto_init ();
4723
7619e7c7 4724 htab = ppc_elf_hash_table (info);
252b5132 4725 local_got_offsets = elf_local_got_offsets (input_bfd);
7619e7c7
AM		 4726 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4727 sym_hashes = elf_sym_hashes (input_bfd);
4728 rel = relocs;
4729 relend = relocs + input_section->reloc_count;
252b5132
RH		 4730 for (; rel < relend; rel++)
4731 {
7619e7c7
AM		 4732 enum elf_ppc_reloc_type r_type;
4733 bfd_vma addend;
4734 bfd_reloc_status_type r;
4735 Elf_Internal_Sym *sym;
4736 asection *sec;
4737 struct elf_link_hash_entry *h;
4738 const char *sym_name;
252b5132
RH		 4739 reloc_howto_type *howto;
4740 unsigned long r_symndx;
4741 bfd_vma relocation;
7619e7c7 4742 bfd_vma branch_bit, insn, from;
7619e7c7
AM		 4743 bfd_boolean unresolved_reloc;
4744 bfd_boolean warned;
4745 unsigned int tls_type, tls_mask, tls_gd;
4746
55fd94b0
AM		 4747 r_type = ELF32_R_TYPE (rel->r_info);
4748 sym = NULL;
4749 sec = NULL;
4750 h = NULL;
7619e7c7
AM		 4751 unresolved_reloc = FALSE;
4752 warned = FALSE;
252b5132 4753 r_symndx = ELF32_R_SYM (rel->r_info);
560e09e9 4754
252b5132
RH		 4755 if (r_symndx < symtab_hdr->sh_info)
4756 {
4757 sym = local_syms + r_symndx;
4758 sec = local_sections[r_symndx];
be8dd2ca 4759 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
252b5132 4760
8517fae7 4761 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
252b5132
RH		 4762 }
4763 else
4764 {
b2a8e766
AM		 4765 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4766 r_symndx, symtab_hdr, sym_hashes,
4767 h, sec, relocation,
4768 unresolved_reloc, warned);
9abc968f 4769
252b5132 4770 sym_name = h->root.root.string;
7619e7c7
AM		 4771 }
4772
4773 /* TLS optimizations. Replace instruction sequences and relocs
4774 based on information we collected in tls_optimize. We edit
4775 RELOCS so that --emit-relocs will output something sensible
4776 for the final instruction stream. */
4777 tls_mask = 0;
4778 tls_gd = 0;
4779 if (IS_PPC_TLS_RELOC (r_type))
4780 {
4781 if (h != NULL)
4782 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
4783 else if (local_got_offsets != NULL)
4784 {
4785 char *lgot_masks;
4786 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
4787 tls_mask = lgot_masks[r_symndx];
4788 }
4789 }
4790
4791 /* Ensure reloc mapping code below stays sane. */
4792 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
4793 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
4794 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
4795 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
4796 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
4797 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
4798 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
4799 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
4800 abort ();
4801 switch (r_type)
4802 {
4803 default:
4804 break;
4805
4806 case R_PPC_GOT_TPREL16:
4807 case R_PPC_GOT_TPREL16_LO:
4808 if (tls_mask != 0
4809 && (tls_mask & TLS_TPREL) == 0)
4810 {
4811 bfd_vma insn;
4812 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
4813 insn &= 31 << 21;
4814 insn |= 0x3c020000; /* addis 0,2,0 */
4815 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
4816 r_type = R_PPC_TPREL16_HA;
4817 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4818 }
4819 break;
4820
4821 case R_PPC_TLS:
4822 if (tls_mask != 0
4823 && (tls_mask & TLS_TPREL) == 0)
4824 {
4825 bfd_vma insn, rtra;
4826 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4827 if ((insn & ((31 << 26) | (31 << 11)))
4828 == ((31 << 26) | (2 << 11)))
4829 rtra = insn & ((1 << 26) - (1 << 16));
4830 else if ((insn & ((31 << 26) | (31 << 16)))
4831 == ((31 << 26) | (2 << 16)))
4832 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
4833 else
4834 abort ();
4835 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
4836 /* add -> addi. */
4837 insn = 14 << 26;
4838 else if ((insn & (31 << 1)) == 23 << 1
4839 && ((insn & (31 << 6)) < 14 << 6
4840 || ((insn & (31 << 6)) >= 16 << 6
4841 && (insn & (31 << 6)) < 24 << 6)))
4842 /* load and store indexed -> dform. */
4843 insn = (32 | ((insn >> 6) & 31)) << 26;
4844 else if ((insn & (31 << 1)) == 21 << 1
4845 && (insn & (0x1a << 6)) == 0)
4846 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4847 insn = (((58 | ((insn >> 6) & 4)) << 26)
4848 | ((insn >> 6) & 1));
4849 else if ((insn & (31 << 1)) == 21 << 1
4850 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
4851 /* lwax -> lwa. */
4852 insn = (58 << 26) | 2;
4853 else
4854 abort ();
4855 insn |= rtra;
4856 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4857 r_type = R_PPC_TPREL16_LO;
4858 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4859 /* Was PPC_TLS which sits on insn boundary, now
4860 PPC_TPREL16_LO which is at insn+2. */
4861 rel->r_offset += 2;
4862 }
4863 break;
4864
4865 case R_PPC_GOT_TLSGD16_HI:
4866 case R_PPC_GOT_TLSGD16_HA:
4867 tls_gd = TLS_TPRELGD;
4868 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4869 goto tls_gdld_hi;
4870 break;
4871
4872 case R_PPC_GOT_TLSLD16_HI:
4873 case R_PPC_GOT_TLSLD16_HA:
4874 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4875 {
4876 tls_gdld_hi:
4877 if ((tls_mask & tls_gd) != 0)
4878 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4879 + R_PPC_GOT_TPREL16);
4880 else
4881 {
4882 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4883 rel->r_offset -= 2;
4884 r_type = R_PPC_NONE;
4885 }
4886 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4887 }
4888 break;
4889
4890 case R_PPC_GOT_TLSGD16:
4891 case R_PPC_GOT_TLSGD16_LO:
4892 tls_gd = TLS_TPRELGD;
4893 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4894 goto tls_get_addr_check;
4895 break;
4896
4897 case R_PPC_GOT_TLSLD16:
4898 case R_PPC_GOT_TLSLD16_LO:
4899 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4900 {
4901 tls_get_addr_check:
4902 if (rel + 1 < relend)
4903 {
4904 enum elf_ppc_reloc_type r_type2;
4905 unsigned long r_symndx2;
4906 struct elf_link_hash_entry *h2;
87d243f1 4907 bfd_vma insn1, insn2;
7619e7c7
AM		 4908 bfd_vma offset;
4909
4910 /* The next instruction should be a call to
4911 __tls_get_addr. Peek at the reloc to be sure. */
55fd94b0 4912 r_type2 = ELF32_R_TYPE (rel[1].r_info);
7619e7c7
AM		 4913 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4914 if (r_symndx2 < symtab_hdr->sh_info
4915 || (r_type2 != R_PPC_REL14
4916 && r_type2 != R_PPC_REL14_BRTAKEN
4917 && r_type2 != R_PPC_REL14_BRNTAKEN
4918 && r_type2 != R_PPC_REL24
4919 && r_type2 != R_PPC_PLTREL24))
4920 break;
4921
4922 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4923 while (h2->root.type == bfd_link_hash_indirect
4924 || h2->root.type == bfd_link_hash_warning)
4925 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
4926 if (h2 == NULL || h2 != htab->tls_get_addr)
4927 break;
4928
4929 /* OK, it checks out. Replace the call. */
4930 offset = rel[1].r_offset;
4931 insn1 = bfd_get_32 (output_bfd,
4932 contents + rel->r_offset - 2);
7619e7c7
AM		 4933 if ((tls_mask & tls_gd) != 0)
4934 {
4935 /* IE */
4936 insn1 &= (1 << 26) - 1;
4937 insn1 |= 32 << 26; /* lwz */
4938 insn2 = 0x7c631214; /* add 3,3,2 */
4939 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
4940 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4941 + R_PPC_GOT_TPREL16);
4942 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4943 }
4944 else
4945 {
4946 /* LE */
4947 insn1 = 0x3c620000; /* addis 3,2,0 */
4948 insn2 = 0x38630000; /* addi 3,3,0 */
4949 if (tls_gd == 0)
4950 {
4951 /* Was an LD reloc. */
4952 r_symndx = 0;
e1918d23
AM		 4953 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4954 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 4955 }
4956 r_type = R_PPC_TPREL16_HA;
4957 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4958 rel[1].r_info = ELF32_R_INFO (r_symndx,
4959 R_PPC_TPREL16_LO);
4960 rel[1].r_offset += 2;
4961 }
7619e7c7
AM		 4962 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
4963 bfd_put_32 (output_bfd, insn2, contents + offset);
7619e7c7
AM		 4964 if (tls_gd == 0)
4965 {
4966 /* We changed the symbol on an LD reloc. Start over
70bccea4 4967 in order to get h, sym, sec etc. right. */
7619e7c7
AM		 4968 rel--;
4969 continue;
4970 }
4971 }
252b5132 4972 }
7619e7c7
AM		 4973 break;
4974 }
4975
4976 /* Handle other relocations that tweak non-addend part of insn. */
4977 branch_bit = 0;
4978 switch (r_type)
4979 {
4980 default:
4981 break;
4982
4983 /* Branch taken prediction relocations. */
4984 case R_PPC_ADDR14_BRTAKEN:
4985 case R_PPC_REL14_BRTAKEN:
4986 branch_bit = BRANCH_PREDICT_BIT;
4987 /* Fall thru */
4988
4cc11e76 4989 /* Branch not taken prediction relocations. */
7619e7c7
AM		 4990 case R_PPC_ADDR14_BRNTAKEN:
4991 case R_PPC_REL14_BRNTAKEN:
4992 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4993 insn &= ~BRANCH_PREDICT_BIT;
4994 insn |= branch_bit;
4995
4996 from = (rel->r_offset
4997 + input_section->output_offset
4998 + input_section->output_section->vma);
4999
5000 /* Invert 'y' bit if not the default. */
5001 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5002 insn ^= BRANCH_PREDICT_BIT;
5003
5004 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5005 break;
252b5132
RH		 5006 }
5007
7619e7c7
AM		 5008 addend = rel->r_addend;
5009 tls_type = 0;
5010 howto = NULL;
55fd94b0
AM		 5011 if (r_type < R_PPC_max)
5012 howto = ppc_elf_howto_table[r_type];
7619e7c7 5013 switch (r_type)
252b5132
RH		 5014 {
5015 default:
7619e7c7 5016 (*_bfd_error_handler)
d003868e
AM		 5017 (_("%B: unknown relocation type %d for symbol %s"),
5018 input_bfd, (int) r_type, sym_name);
252b5132
RH		 5019
5020 bfd_set_error (bfd_error_bad_value);
b34976b6 5021 ret = FALSE;
252b5132
RH		 5022 continue;
5023
7619e7c7
AM		 5024 case R_PPC_NONE:
5025 case R_PPC_TLS:
5026 case R_PPC_EMB_MRKREF:
5027 case R_PPC_GNU_VTINHERIT:
5028 case R_PPC_GNU_VTENTRY:
7595d193
L		 5029 continue;
5030
7619e7c7
AM		 5031 /* GOT16 relocations. Like an ADDR16 using the symbol's
5032 address in the GOT as relocation value instead of the
5033 symbol's value itself. Also, create a GOT entry for the
5034 symbol and put the symbol value there. */
5035 case R_PPC_GOT_TLSGD16:
5036 case R_PPC_GOT_TLSGD16_LO:
5037 case R_PPC_GOT_TLSGD16_HI:
5038 case R_PPC_GOT_TLSGD16_HA:
5039 tls_type = TLS_TLS | TLS_GD;
5040 goto dogot;
5041
5042 case R_PPC_GOT_TLSLD16:
5043 case R_PPC_GOT_TLSLD16_LO:
5044 case R_PPC_GOT_TLSLD16_HI:
5045 case R_PPC_GOT_TLSLD16_HA:
5046 tls_type = TLS_TLS | TLS_LD;
5047 goto dogot;
5048
5049 case R_PPC_GOT_TPREL16:
5050 case R_PPC_GOT_TPREL16_LO:
5051 case R_PPC_GOT_TPREL16_HI:
5052 case R_PPC_GOT_TPREL16_HA:
5053 tls_type = TLS_TLS | TLS_TPREL;
5054 goto dogot;
5055
5056 case R_PPC_GOT_DTPREL16:
5057 case R_PPC_GOT_DTPREL16_LO:
5058 case R_PPC_GOT_DTPREL16_HI:
5059 case R_PPC_GOT_DTPREL16_HA:
5060 tls_type = TLS_TLS | TLS_DTPREL;
5061 goto dogot;
5062
5063 case R_PPC_GOT16:
5064 case R_PPC_GOT16_LO:
5065 case R_PPC_GOT16_HI:
5066 case R_PPC_GOT16_HA:
5067 dogot:
5068 {
5069 /* Relocation is to the entry for this symbol in the global
5070 offset table. */
5071 bfd_vma off;
5072 bfd_vma *offp;
5073 unsigned long indx;
5074
5075 if (htab->got == NULL)
5076 abort ();
5077
5078 indx = 0;
5079 if (tls_type == (TLS_TLS | TLS_LD)
d881513a 5080 && (h == NULL
f5385ebf 5081 || !h->def_dynamic))
7619e7c7
AM		 5082 offp = &htab->tlsld_got.offset;
5083 else if (h != NULL)
5084 {
5085 bfd_boolean dyn;
5086 dyn = htab->elf.dynamic_sections_created;
ee05f2fe 5087 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
7619e7c7
AM		 5088 || (info->shared
5089 && SYMBOL_REFERENCES_LOCAL (info, h)))
5090 /* This is actually a static link, or it is a
5091 -Bsymbolic link and the symbol is defined
5092 locally, or the symbol was forced to be local
5093 because of a version file. */
5094 ;
5095 else
5096 {
5097 indx = h->dynindx;
5098 unresolved_reloc = FALSE;
5099 }
5100 offp = &h->got.offset;
5101 }
5102 else
5103 {
5104 if (local_got_offsets == NULL)
5105 abort ();
5106 offp = &local_got_offsets[r_symndx];
5107 }
5108
5109 /* The offset must always be a multiple of 4. We use the
5110 least significant bit to record whether we have already
5111 processed this entry. */
5112 off = *offp;
5113 if ((off & 1) != 0)
5114 off &= ~1;
5115 else
5116 {
70bccea4
AM		 5117 unsigned int tls_m = (tls_mask
5118 & (TLS_LD | TLS_GD | TLS_DTPREL
5119 | TLS_TPREL | TLS_TPRELGD));
5120
5121 if (offp == &htab->tlsld_got.offset)
5122 tls_m = TLS_LD;
5123 else if (h == NULL
f5385ebf 5124 || !h->def_dynamic)
70bccea4
AM		 5125 tls_m &= ~TLS_LD;
5126
5127 /* We might have multiple got entries for this sym.
5128 Initialize them all. */
5129 do
7619e7c7 5130 {
70bccea4
AM		 5131 int tls_ty = 0;
5132
5133 if ((tls_m & TLS_LD) != 0)
7619e7c7 5134 {
70bccea4
AM		 5135 tls_ty = TLS_TLS | TLS_LD;
5136 tls_m &= ~TLS_LD;
5137 }
5138 else if ((tls_m & TLS_GD) != 0)
5139 {
5140 tls_ty = TLS_TLS | TLS_GD;
5141 tls_m &= ~TLS_GD;
5142 }
5143 else if ((tls_m & TLS_DTPREL) != 0)
5144 {
5145 tls_ty = TLS_TLS | TLS_DTPREL;
5146 tls_m &= ~TLS_DTPREL;
5147 }
5148 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5149 {
5150 tls_ty = TLS_TLS | TLS_TPREL;
5151 tls_m = 0;
7619e7c7 5152 }
7619e7c7 5153
70bccea4 5154 /* Generate relocs for the dynamic linker. */
4e795f50
AM		 5155 if ((info->shared || indx != 0)
5156 && (h == NULL
5157 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5158 || h->root.type != bfd_link_hash_undefweak))
7619e7c7 5159 {
70bccea4
AM		 5160 outrel.r_offset = (htab->got->output_section->vma
5161 + htab->got->output_offset
5162 + off);
e515b051 5163 outrel.r_addend = 0;
70bccea4
AM		 5164 if (tls_ty & (TLS_LD | TLS_GD))
5165 {
5166 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
70bccea4
AM		 5167 if (tls_ty == (TLS_TLS | TLS_GD))
5168 {
5169 loc = htab->relgot->contents;
5170 loc += (htab->relgot->reloc_count++
5171 * sizeof (Elf32_External_Rela));
5172 bfd_elf32_swap_reloca_out (output_bfd,
5173 &outrel, loc);
e515b051 5174 outrel.r_offset += 4;
70bccea4
AM		 5175 outrel.r_info
5176 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
70bccea4
AM		 5177 }
5178 }
5179 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5180 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5181 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5182 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5183 else if (indx == 0)
5184 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5185 else
5186 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
70bccea4 5187 if (indx == 0)
e515b051
AM		 5188 {
5189 outrel.r_addend += relocation;
5190 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
e1918d23 5191 outrel.r_addend -= htab->elf.tls_sec->vma;
e515b051 5192 }
70bccea4
AM		 5193 loc = htab->relgot->contents;
5194 loc += (htab->relgot->reloc_count++
5195 * sizeof (Elf32_External_Rela));
5196 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
7619e7c7
AM		 5197 }
5198
70bccea4
AM		 5199 /* Init the .got section contents if we're not
5200 emitting a reloc. */
5201 else
7619e7c7 5202 {
70bccea4
AM		 5203 bfd_vma value = relocation;
5204
7b609f53
AM		 5205 if (tls_ty == (TLS_TLS | TLS_LD))
5206 value = 1;
5207 else if (tls_ty != 0)
70bccea4 5208 {
e1918d23 5209 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
7b609f53 5210 if (tls_ty == (TLS_TLS | TLS_TPREL))
70bccea4 5211 value += DTP_OFFSET - TP_OFFSET;
70bccea4 5212
7b609f53
AM		 5213 if (tls_ty == (TLS_TLS | TLS_GD))
5214 {
5215 bfd_put_32 (output_bfd, value,
5216 htab->got->contents + off + 4);
5217 value = 1;
5218 }
70bccea4 5219 }
70bccea4
AM		 5220 bfd_put_32 (output_bfd, value,
5221 htab->got->contents + off);
7619e7c7 5222 }
70bccea4
AM		 5223
5224 off += 4;
5225 if (tls_ty & (TLS_LD | TLS_GD))
5226 off += 4;
7619e7c7 5227 }
70bccea4
AM		 5228 while (tls_m != 0);
5229
5230 off = *offp;
5231 *offp = off | 1;
7619e7c7
AM		 5232 }
5233
5234 if (off >= (bfd_vma) -2)
5235 abort ();
5236
70bccea4
AM		 5237 if ((tls_type & TLS_TLS) != 0)
5238 {
5239 if (tls_type != (TLS_TLS | TLS_LD))
5240 {
5241 if ((tls_mask & TLS_LD) != 0
5242 && !(h == NULL
f5385ebf 5243 || !h->def_dynamic))
70bccea4
AM		 5244 off += 8;
5245 if (tls_type != (TLS_TLS | TLS_GD))
5246 {
5247 if ((tls_mask & TLS_GD) != 0)
5248 off += 8;
5249 if (tls_type != (TLS_TLS | TLS_DTPREL))
5250 {
5251 if ((tls_mask & TLS_DTPREL) != 0)
5252 off += 4;
5253 }
5254 }
5255 }
5256 }
5257
7619e7c7
AM		 5258 relocation = htab->got->output_offset + off - 4;
5259
5260 /* Addends on got relocations don't make much sense.
5261 x+off@got is actually x@got+off, and since the got is
5262 generated by a hash table traversal, the value in the
5263 got at entry m+n bears little relation to the entry m. */
5264 if (addend != 0)
5265 (*_bfd_error_handler)
d003868e
AM		 5266 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5267 input_bfd,
5268 input_section,
7619e7c7 5269 (long) rel->r_offset,
7b609f53 5270 howto->name,
7619e7c7
AM		 5271 sym_name);
5272 }
70bccea4 5273 break;
7619e7c7 5274
252b5132 5275 /* Relocations that need no special processing. */
7619e7c7 5276 case R_PPC_LOCAL24PC:
252b5132
RH		 5277 /* It makes no sense to point a local relocation
5278 at a symbol not in this object. */
7b609f53 5279 if (unresolved_reloc)
252b5132 5280 {
464e1740
ILT		 5281 if (! (*info->callbacks->undefined_symbol) (info,
5282 h->root.root.string,
5283 input_bfd,
5284 input_section,
5cc7c785 5285 rel->r_offset,
b34976b6
AM		 5286 TRUE))
5287 return FALSE;
252b5132
RH		 5288 continue;
5289 }
5290 break;
5291
7619e7c7
AM		 5292 case R_PPC_DTPREL16:
5293 case R_PPC_DTPREL16_LO:
5294 case R_PPC_DTPREL16_HI:
5295 case R_PPC_DTPREL16_HA:
e1918d23 5296 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 5297 break;
5298
70bccea4
AM		 5299 /* Relocations that may need to be propagated if this is a shared
5300 object. */
7619e7c7
AM		 5301 case R_PPC_TPREL16:
5302 case R_PPC_TPREL16_LO:
5303 case R_PPC_TPREL16_HI:
5304 case R_PPC_TPREL16_HA:
e1918d23 5305 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 5306 /* The TPREL16 relocs shouldn't really be used in shared
5307 libs as they will result in DT_TEXTREL being set, but
5308 support them anyway. */
5309 goto dodyn;
5310
5311 case R_PPC_TPREL32:
e1918d23 5312 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
7619e7c7
AM		 5313 goto dodyn;
5314
5315 case R_PPC_DTPREL32:
e1918d23 5316 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
7619e7c7
AM		 5317 goto dodyn;
5318
e515b051
AM		 5319 case R_PPC_DTPMOD32:
5320 relocation = 1;
5321 addend = 0;
5322 goto dodyn;
5323
7619e7c7
AM		 5324 case R_PPC_REL24:
5325 case R_PPC_REL32:
5326 case R_PPC_REL14:
5327 case R_PPC_REL14_BRTAKEN:
5328 case R_PPC_REL14_BRNTAKEN:
252b5132
RH		 5329 /* If these relocations are not to a named symbol, they can be
5330 handled right here, no need to bother the dynamic linker. */
f6c52c13
AM		 5331 if (SYMBOL_REFERENCES_LOCAL (info, h)
5332 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
252b5132 5333 break;
70bccea4 5334 /* fall through */
252b5132 5335
70bccea4
AM		 5336 /* Relocations that always need to be propagated if this is a shared
5337 object. */
7619e7c7
AM		 5338 case R_PPC_ADDR32:
5339 case R_PPC_ADDR24:
5340 case R_PPC_ADDR16:
5341 case R_PPC_ADDR16_LO:
5342 case R_PPC_ADDR16_HI:
5343 case R_PPC_ADDR16_HA:
5344 case R_PPC_ADDR14:
5345 case R_PPC_ADDR14_BRTAKEN:
5346 case R_PPC_ADDR14_BRNTAKEN:
5347 case R_PPC_UADDR32:
5348 case R_PPC_UADDR16:
ee05f2fe
AM		 5349 /* r_symndx will be zero only for relocs against symbols
5350 from removed linkonce sections, or sections discarded by
5351 a linker script. */
7619e7c7 5352 dodyn:
ee05f2fe
AM		 5353 if (r_symndx == 0)
5354 break;
5355 /* Fall thru. */
5356
5357 if ((info->shared
4e795f50
AM		 5358 && (h == NULL
5359 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5360 || h->root.type != bfd_link_hash_undefweak)
ee05f2fe 5361 && (MUST_BE_DYN_RELOC (r_type)
f6c52c13 5362 || !SYMBOL_CALLS_LOCAL (info, h)))
ee05f2fe
AM		 5363 || (ELIMINATE_COPY_RELOCS
5364 && !info->shared
5365 && (input_section->flags & SEC_ALLOC) != 0
5366 && h != NULL
5367 && h->dynindx != -1
f5385ebf
AM		 5368 && !h->non_got_ref
5369 && h->def_dynamic
5370 && !h->def_regular))
252b5132 5371 {
0bb2d96a 5372 int skip;
252b5132
RH		 5373
5374#ifdef DEBUG
55fd94b0
AM		 5375 fprintf (stderr, "ppc_elf_relocate_section needs to "
5376 "create relocation for %s\n",
70bccea4
AM		 5377 (h && h->root.root.string
5378 ? h->root.root.string : "<unknown>"));
252b5132
RH		 5379#endif
5380
5381 /* When generating a shared object, these relocations
70bccea4
AM		 5382 are copied into the output file to be resolved at run
5383 time. */
252b5132
RH		 5384 if (sreloc == NULL)
5385 {
5386 const char *name;
5387
5388 name = (bfd_elf_string_from_elf_section
5389 (input_bfd,
5390 elf_elfheader (input_bfd)->e_shstrndx,
5391 elf_section_data (input_section)->rel_hdr.sh_name));
5392 if (name == NULL)
b34976b6 5393 return FALSE;
252b5132
RH		 5394
5395 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5396 && strcmp (bfd_get_section_name (input_bfd,
5397 input_section),
5398 name + 5) == 0);
5399
7619e7c7 5400 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
252b5132
RH		 5401 BFD_ASSERT (sreloc != NULL);
5402 }
5403
0bb2d96a 5404 skip = 0;
252b5132 5405
c629eae0
JJ		 5406 outrel.r_offset =
5407 _bfd_elf_section_offset (output_bfd, info, input_section,
5408 rel->r_offset);
0bb2d96a
JJ		 5409 if (outrel.r_offset == (bfd_vma) -1
5410 || outrel.r_offset == (bfd_vma) -2)
5411 skip = (int) outrel.r_offset;
252b5132
RH		 5412 outrel.r_offset += (input_section->output_section->vma
5413 + input_section->output_offset);
5414
5415 if (skip)
5416 memset (&outrel, 0, sizeof outrel);
f6c52c13 5417 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
252b5132 5418 {
7619e7c7 5419 unresolved_reloc = FALSE;
252b5132
RH		 5420 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5421 outrel.r_addend = rel->r_addend;
5422 }
5423 else
5424 {
47388f4c
AM		 5425 outrel.r_addend = relocation + rel->r_addend;
5426
252b5132 5427 if (r_type == R_PPC_ADDR32)
47388f4c 5428 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
252b5132
RH		 5429 else
5430 {
5431 long indx;
5432
47388f4c 5433 if (bfd_is_abs_section (sec))
252b5132
RH		 5434 indx = 0;
5435 else if (sec == NULL || sec->owner == NULL)
5436 {
5437 bfd_set_error (bfd_error_bad_value);
b34976b6 5438 return FALSE;
252b5132
RH		 5439 }
5440 else
5441 {
5442 asection *osec;
5443
47388f4c
AM		 5444 /* We are turning this relocation into one
5445 against a section symbol. It would be
5446 proper to subtract the symbol's value,
5447 osec->vma, from the emitted reloc addend,
5448 but ld.so expects buggy relocs. */
252b5132
RH		 5449 osec = sec->output_section;
5450 indx = elf_section_data (osec)->dynindx;
8da6118f 5451 BFD_ASSERT (indx > 0);
252b5132
RH		 5452#ifdef DEBUG
5453 if (indx <= 0)
55fd94b0
AM		 5454 printf ("indx=%d section=%s flags=%08x name=%s\n",
5455 indx, osec->name, osec->flags,
5456 h->root.root.string);
252b5132
RH		 5457#endif
5458 }
5459
5460 outrel.r_info = ELF32_R_INFO (indx, r_type);
252b5132
RH		 5461 }
5462 }
5463
947216bf
AM		 5464 loc = sreloc->contents;
5465 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5466 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
252b5132 5467
2243deae 5468 if (skip == -1)
252b5132 5469 continue;
2243deae
L		 5470
5471 /* This reloc will be computed at runtime. We clear the memory
5472 so that it contains predictable value. */
5473 if (! skip
5474 && ((input_section->flags & SEC_ALLOC) != 0
5475 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5476 {
5477 relocation = howto->pc_relative ? outrel.r_offset : 0;
5478 addend = 0;
5479 break;
5480 }
252b5132 5481 }
252b5132
RH		 5482 break;
5483
b4a38de6
AM		 5484 case R_PPC_RELAX32PC_PLT:
5485 case R_PPC_RELAX32_PLT:
5486 BFD_ASSERT (h != NULL
5487 && h->plt.offset != (bfd_vma) -1
5488 && htab->plt != NULL);
5489
5490 relocation = (htab->plt->output_section->vma
5491 + htab->plt->output_offset
5492 + h->plt.offset);
5493 if (r_type == R_PPC_RELAX32_PLT)
5494 goto relax32;
5495 /* Fall thru */
5496
f31a141e
AM		 5497 case R_PPC_RELAX32PC:
5498 relocation -= (input_section->output_section->vma
5499 + input_section->output_offset
5500 + rel->r_offset - 4);
5501 /* Fall thru */
b4a38de6 5502
deaaf2f3 5503 case R_PPC_RELAX32:
b4a38de6 5504 relax32:
9abc968f
AM		 5505 {
5506 unsigned long t0;
5507 unsigned long t1;
5508
5509 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
5510 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
5511
5512 /* We're clearing the bits for R_PPC_ADDR16_HA
5513 and R_PPC_ADDR16_LO here. */
5514 t0 &= ~0xffff;
5515 t1 &= ~0xffff;
5516
5517 /* t0 is HA, t1 is LO */
5518 relocation += addend;
5519 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
5520 t1 |= relocation & 0xffff;
5521
5522 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
5523 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
5524 }
8517fae7 5525 continue;
deaaf2f3 5526
70bccea4 5527 /* Indirect .sdata relocation. */
7619e7c7 5528 case R_PPC_EMB_SDAI16:
c9a2f333 5529 BFD_ASSERT (htab->sdata[0].section != NULL);
7619e7c7 5530 relocation
76750a2f
AM		 5531 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
5532 h, relocation, rel);
252b5132
RH		 5533 break;
5534
70bccea4 5535 /* Indirect .sdata2 relocation. */
7619e7c7 5536 case R_PPC_EMB_SDA2I16:
c9a2f333 5537 BFD_ASSERT (htab->sdata[1].section != NULL);
7619e7c7 5538 relocation
76750a2f
AM		 5539 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
5540 h, relocation, rel);
252b5132
RH		 5541 break;
5542
70bccea4
AM		 5543 /* Handle the TOC16 reloc. We want to use the offset within the .got
5544 section, not the actual VMA. This is appropriate when generating
5545 an embedded ELF object, for which the .got section acts like the
5546 AIX .toc section. */
7619e7c7 5547 case R_PPC_TOC16: /* phony GOT16 relocations */
55fd94b0 5548 BFD_ASSERT (sec != NULL);
252b5132
RH		 5549 BFD_ASSERT (bfd_is_und_section (sec)
5550 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
f12123c0 5551 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
252b5132 5552
70bccea4 5553 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
252b5132
RH		 5554 break;
5555
7619e7c7 5556 case R_PPC_PLTREL24:
252b5132 5557 /* Relocation is to the entry for this symbol in the
70bccea4 5558 procedure linkage table. */
252b5132
RH		 5559 BFD_ASSERT (h != NULL);
5560
5561 if (h->plt.offset == (bfd_vma) -1
7619e7c7 5562 || htab->plt == NULL)
252b5132
RH		 5563 {
5564 /* We didn't make a PLT entry for this symbol. This
70bccea4
AM		 5565 happens when statically linking PIC code, or when
5566 using -Bsymbolic. */
252b5132
RH		 5567 break;
5568 }
5569
7619e7c7
AM		 5570 unresolved_reloc = FALSE;
5571 relocation = (htab->plt->output_section->vma
5572 + htab->plt->output_offset
252b5132 5573 + h->plt.offset);
8da6118f 5574 break;
252b5132 5575
70bccea4 5576 /* Relocate against _SDA_BASE_. */
7619e7c7 5577 case R_PPC_SDAREL16:
252b5132
RH		 5578 {
5579 const char *name;
5580
55fd94b0 5581 BFD_ASSERT (sec != NULL);
252b5132 5582 name = bfd_get_section_name (abfd, sec->output_section);
5f819128
AM		 5583 if (! ((strncmp (name, ".sdata", 6) == 0
5584 && (name[6] == 0 || name[6] == '.'))
5585 || (strncmp (name, ".sbss", 5) == 0
5586 && (name[5] == 0 || name[5] == '.'))))
252b5132 5587 {
55fd94b0 5588 (*_bfd_error_handler)
d003868e 5589 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 5590 "in the wrong output section (%s)"),
d003868e 5591 input_bfd,
55fd94b0
AM		 5592 sym_name,
5593 howto->name,
5594 name);
252b5132 5595 }
c9a2f333 5596 addend -= htab->sdata[0].sym_val;
252b5132
RH		 5597 }
5598 break;
5599
70bccea4 5600 /* Relocate against _SDA2_BASE_. */
7619e7c7 5601 case R_PPC_EMB_SDA2REL:
252b5132
RH		 5602 {
5603 const char *name;
5604
55fd94b0 5605 BFD_ASSERT (sec != NULL);
252b5132 5606 name = bfd_get_section_name (abfd, sec->output_section);
5f819128
AM		 5607 if (! (strncmp (name, ".sdata2", 7) == 0
5608 || strncmp (name, ".sbss2", 6) == 0))
252b5132 5609 {
55fd94b0 5610 (*_bfd_error_handler)
d003868e 5611 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 5612 "in the wrong output section (%s)"),
d003868e 5613 input_bfd,
55fd94b0
AM		 5614 sym_name,
5615 howto->name,
5616 name);
c3668558 5617
252b5132 5618 bfd_set_error (bfd_error_bad_value);
b34976b6 5619 ret = FALSE;
252b5132
RH		 5620 continue;
5621 }
c9a2f333 5622 addend -= htab->sdata[1].sym_val;
252b5132
RH		 5623 }
5624 break;
5625
70bccea4 5626 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
7619e7c7
AM		 5627 case R_PPC_EMB_SDA21:
5628 case R_PPC_EMB_RELSDA:
252b5132
RH		 5629 {
5630 const char *name;
5631 int reg;
5632
55fd94b0 5633 BFD_ASSERT (sec != NULL);
252b5132 5634 name = bfd_get_section_name (abfd, sec->output_section);
b34976b6 5635 if (((strncmp (name, ".sdata", 6) == 0
5f819128
AM		 5636 && (name[6] == 0 || name[6] == '.'))
5637 || (strncmp (name, ".sbss", 5) == 0
5638 && (name[5] == 0 || name[5] == '.'))))
252b5132
RH		 5639 {
5640 reg = 13;
c9a2f333 5641 addend -= htab->sdata[0].sym_val;
252b5132
RH		 5642 }
5643
5f819128
AM		 5644 else if (strncmp (name, ".sdata2", 7) == 0
5645 || strncmp (name, ".sbss2", 6) == 0)
252b5132
RH		 5646 {
5647 reg = 2;
c9a2f333 5648 addend -= htab->sdata[1].sym_val;
252b5132
RH		 5649 }
5650
8da6118f
KH		 5651 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
5652 || strcmp (name, ".PPC.EMB.sbss0") == 0)
252b5132
RH		 5653 {
5654 reg = 0;
5655 }
5656
5657 else
5658 {
55fd94b0 5659 (*_bfd_error_handler)
d003868e 5660 (_("%B: the target (%s) of a %s relocation is "
55fd94b0 5661 "in the wrong output section (%s)"),
d003868e 5662 input_bfd,
55fd94b0
AM		 5663 sym_name,
5664 howto->name,
5665 name);
252b5132
RH		 5666
5667 bfd_set_error (bfd_error_bad_value);
b34976b6 5668 ret = FALSE;
252b5132
RH		 5669 continue;
5670 }
5671
5672 if (r_type == R_PPC_EMB_SDA21)
5673 { /* fill in register field */
7619e7c7 5674 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
252b5132 5675 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
7619e7c7 5676 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
252b5132
RH		 5677 }
5678 }
5679 break;
5680
70bccea4 5681 /* Relocate against the beginning of the section. */
7619e7c7
AM		 5682 case R_PPC_SECTOFF:
5683 case R_PPC_SECTOFF_LO:
5684 case R_PPC_SECTOFF_HI:
5685 case R_PPC_SECTOFF_HA:
55fd94b0 5686 BFD_ASSERT (sec != NULL);
252b5132 5687 addend -= sec->output_section->vma;
252b5132
RH		 5688 break;
5689
70bccea4 5690 /* Negative relocations. */
7619e7c7
AM		 5691 case R_PPC_EMB_NADDR32:
5692 case R_PPC_EMB_NADDR16:
5693 case R_PPC_EMB_NADDR16_LO:
5694 case R_PPC_EMB_NADDR16_HI:
5695 case R_PPC_EMB_NADDR16_HA:
8da6118f 5696 addend -= 2 * relocation;
252b5132
RH		 5697 break;
5698
7619e7c7
AM		 5699 case R_PPC_COPY:
5700 case R_PPC_GLOB_DAT:
5701 case R_PPC_JMP_SLOT:
5702 case R_PPC_RELATIVE:
5703 case R_PPC_PLT32:
5704 case R_PPC_PLTREL32:
5705 case R_PPC_PLT16_LO:
5706 case R_PPC_PLT16_HI:
5707 case R_PPC_PLT16_HA:
5708 case R_PPC_ADDR30:
5709 case R_PPC_EMB_RELSEC16:
5710 case R_PPC_EMB_RELST_LO:
5711 case R_PPC_EMB_RELST_HI:
5712 case R_PPC_EMB_RELST_HA:
5713 case R_PPC_EMB_BIT_FLD:
5714 (*_bfd_error_handler)
d003868e
AM		 5715 (_("%B: relocation %s is not yet supported for symbol %s."),
5716 input_bfd,
7619e7c7
AM		 5717 howto->name,
5718 sym_name);
252b5132
RH		 5719
5720 bfd_set_error (bfd_error_invalid_operation);
b34976b6 5721 ret = FALSE;
252b5132 5722 continue;
7619e7c7 5723 }
252b5132 5724
7619e7c7
AM		 5725 /* Do any further special processing. */
5726 switch (r_type)
5727 {
5728 default:
5729 break;
5730
5731 case R_PPC_ADDR16_HA:
5732 case R_PPC_GOT16_HA:
5733 case R_PPC_PLT16_HA:
5734 case R_PPC_SECTOFF_HA:
5735 case R_PPC_TPREL16_HA:
5736 case R_PPC_DTPREL16_HA:
5737 case R_PPC_GOT_TLSGD16_HA:
5738 case R_PPC_GOT_TLSLD16_HA:
5739 case R_PPC_GOT_TPREL16_HA:
5740 case R_PPC_GOT_DTPREL16_HA:
5741 case R_PPC_EMB_NADDR16_HA:
5742 case R_PPC_EMB_RELST_HA:
5743 /* It's just possible that this symbol is a weak symbol
7b609f53 5744 that's not actually defined anywhere. In that case,
7619e7c7
AM		 5745 'sec' would be NULL, and we should leave the symbol
5746 alone (it will be set to zero elsewhere in the link). */
5747 if (sec != NULL)
e515b051
AM		 5748 /* Add 0x10000 if sign bit in 0:15 is set.
5749 Bits 0:15 are not used. */
5750 addend += 0x8000;
7619e7c7 5751 break;
252b5132
RH		 5752 }
5753
252b5132 5754#ifdef DEBUG
55fd94b0
AM		 5755 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5756 "offset = %ld, addend = %ld\n",
252b5132 5757 howto->name,
8da6118f 5758 (int) r_type,
252b5132
RH		 5759 sym_name,
5760 r_symndx,
7619e7c7 5761 (long) rel->r_offset,
8da6118f 5762 (long) addend);
252b5132
RH		 5763#endif
5764
7619e7c7
AM		 5765 if (unresolved_reloc
5766 && !((input_section->flags & SEC_DEBUGGING) != 0
f5385ebf 5767 && h->def_dynamic))
7619e7c7
AM		 5768 {
5769 (*_bfd_error_handler)
d003868e
AM		 5770 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5771 input_bfd,
5772 input_section,
7619e7c7 5773 (long) rel->r_offset,
7b609f53 5774 howto->name,
7619e7c7
AM		 5775 sym_name);
5776 ret = FALSE;
5777 }
5778
252b5132
RH		 5779 r = _bfd_final_link_relocate (howto,
5780 input_bfd,
5781 input_section,
5782 contents,
7619e7c7 5783 rel->r_offset,
252b5132
RH		 5784 relocation,
5785 addend);
5786
7619e7c7 5787 if (r != bfd_reloc_ok)
252b5132 5788 {
7619e7c7
AM		 5789 if (sym_name == NULL)
5790 sym_name = "(null)";
5791 if (r == bfd_reloc_overflow)
252b5132 5792 {
7619e7c7
AM		 5793 if (warned)
5794 continue;
5795 if (h != NULL
5796 && h->root.type == bfd_link_hash_undefweak
dc1bc0c9
RH		 5797 && howto->pc_relative)
5798 {
5799 /* Assume this is a call protected by other code that
5800 detect the symbol is undefined. If this is the case,
5801 we can safely ignore the overflow. If not, the
5802 program is hosed anyway, and a little warning isn't
5803 going to help. */
252b5132 5804
dc1bc0c9
RH		 5805 continue;
5806 }
252b5132 5807
7619e7c7 5808 if (! (*info->callbacks->reloc_overflow) (info,
dfeffb9f 5809 (h ? &h->root : NULL),
7619e7c7
AM		 5810 sym_name,
5811 howto->name,
5812 rel->r_addend,
5813 input_bfd,
5814 input_section,
5815 rel->r_offset))
5816 return FALSE;
dc1bc0c9
RH		 5817 }
5818 else
5819 {
7619e7c7 5820 (*_bfd_error_handler)
d003868e
AM		 5821 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
5822 input_bfd, input_section,
7b609f53 5823 (long) rel->r_offset, howto->name, sym_name, (int) r);
7619e7c7 5824 ret = FALSE;
252b5132
RH		 5825 }
5826 }
5827 }
5828
252b5132
RH		 5829#ifdef DEBUG
5830 fprintf (stderr, "\n");
5831#endif
5832
5833 return ret;
5834}
252b5132 5835\f
25dbc73a
AM		 5836/* Finish up dynamic symbol handling. We set the contents of various
5837 dynamic sections here. */
c5fccbec 5838
b34976b6 5839static bfd_boolean
25dbc73a
AM		 5840ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
5841 struct bfd_link_info *info,
5842 struct elf_link_hash_entry *h,
5843 Elf_Internal_Sym *sym)
e1a9cb8e 5844{
25dbc73a 5845 struct ppc_elf_link_hash_table *htab;
e1a9cb8e 5846
25dbc73a
AM		 5847#ifdef DEBUG
5848 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
5849 h->root.root.string);
5850#endif
e1a9cb8e 5851
25dbc73a
AM		 5852 htab = ppc_elf_hash_table (info);
5853 BFD_ASSERT (htab->elf.dynobj != NULL);
e1a9cb8e 5854
25dbc73a 5855 if (h->plt.offset != (bfd_vma) -1)
e1a9cb8e 5856 {
25dbc73a
AM		 5857 Elf_Internal_Rela rela;
5858 bfd_byte *loc;
5859 bfd_vma reloc_index;
e1a9cb8e 5860
25dbc73a
AM		 5861#ifdef DEBUG
5862 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
5863#endif
e1a9cb8e 5864
25dbc73a
AM		 5865 /* This symbol has an entry in the procedure linkage table. Set
5866 it up. */
e1a9cb8e 5867
25dbc73a
AM		 5868 BFD_ASSERT (h->dynindx != -1);
5869 BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
e1a9cb8e 5870
25dbc73a
AM		 5871 /* We don't need to fill in the .plt. The ppc dynamic linker
5872 will fill it in. */
e1a9cb8e 5873
25dbc73a
AM		 5874 /* Fill in the entry in the .rela.plt section. */
5875 rela.r_offset = (htab->plt->output_section->vma
5876 + htab->plt->output_offset
5877 + h->plt.offset);
5878 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
5879 rela.r_addend = 0;
e1a9cb8e 5880
25dbc73a
AM		 5881 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
5882 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
5883 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
5884 loc = (htab->relplt->contents
5885 + reloc_index * sizeof (Elf32_External_Rela));
5886 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
e1a9cb8e 5887
25dbc73a
AM		 5888 if (!h->def_regular)
5889 {
5890 /* Mark the symbol as undefined, rather than as defined in
5891 the .plt section. Leave the value alone. */
5892 sym->st_shndx = SHN_UNDEF;
5893 /* If the symbol is weak, we do need to clear the value.
5894 Otherwise, the PLT entry would provide a definition for
5895 the symbol even if the symbol wasn't defined anywhere,
5896 and so the symbol would never be NULL. */
5897 if (!h->ref_regular_nonweak)
5898 sym->st_value = 0;
5899 }
e1a9cb8e
NC		 5900 }
5901
25dbc73a
AM		 5902 if (h->needs_copy)
5903 {
5904 asection *s;
5905 Elf_Internal_Rela rela;
5906 bfd_byte *loc;
e1a9cb8e 5907
25dbc73a 5908 /* This symbols needs a copy reloc. Set it up. */
e1a9cb8e 5909
25dbc73a
AM		 5910#ifdef DEBUG
5911 fprintf (stderr, ", copy");
5912#endif
e1a9cb8e 5913
25dbc73a 5914 BFD_ASSERT (h->dynindx != -1);
86bbe32f 5915
25dbc73a
AM		 5916 if (h->size <= elf_gp_size (htab->elf.dynobj))
5917 s = htab->relsbss;
5918 else
5919 s = htab->relbss;
5920 BFD_ASSERT (s != NULL);
e1a9cb8e 5921
25dbc73a
AM		 5922 rela.r_offset = (h->root.u.def.value
5923 + h->root.u.def.section->output_section->vma
5924 + h->root.u.def.section->output_offset);
5925 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
5926 rela.r_addend = 0;
5927 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5928 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5929 }
e1a9cb8e 5930
25dbc73a
AM		 5931#ifdef DEBUG
5932 fprintf (stderr, "\n");
5933#endif
e1a9cb8e 5934
25dbc73a
AM		 5935 /* Mark some specially defined symbols as absolute. */
5936 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5937 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
5938 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
5939 sym->st_shndx = SHN_ABS;
e1a9cb8e 5940
25dbc73a
AM		 5941 return TRUE;
5942}
5943\f
5944static enum elf_reloc_type_class
5945ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
e1a9cb8e 5946{
25dbc73a
AM		 5947 switch (ELF32_R_TYPE (rela->r_info))
5948 {
5949 case R_PPC_RELATIVE:
5950 return reloc_class_relative;
5951 case R_PPC_REL24:
5952 case R_PPC_ADDR24:
5953 case R_PPC_JMP_SLOT:
5954 return reloc_class_plt;
5955 case R_PPC_COPY:
5956 return reloc_class_copy;
5957 default:
5958 return reloc_class_normal;
5959 }
e1a9cb8e 5960}
25dbc73a
AM		 5961\f
5962/* Finish up the dynamic sections. */
e1a9cb8e 5963
25dbc73a
AM		 5964static bfd_boolean
5965ppc_elf_finish_dynamic_sections (bfd *output_bfd,
5966 struct bfd_link_info *info)
e1a9cb8e 5967{
25dbc73a
AM		 5968 asection *sdyn;
5969 struct ppc_elf_link_hash_table *htab;
e1a9cb8e 5970
25dbc73a
AM		 5971#ifdef DEBUG
5972 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
5973#endif
6b0817e5 5974
25dbc73a
AM		 5975 htab = ppc_elf_hash_table (info);
5976 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
e1a9cb8e 5977
25dbc73a 5978 if (htab->elf.dynamic_sections_created)
e1a9cb8e 5979 {
25dbc73a 5980 Elf32_External_Dyn *dyncon, *dynconend;
e1a9cb8e 5981
25dbc73a 5982 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
86bbe32f 5983
25dbc73a
AM		 5984 dyncon = (Elf32_External_Dyn *) sdyn->contents;
5985 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
5986 for (; dyncon < dynconend; dyncon++)
5987 {
5988 Elf_Internal_Dyn dyn;
5989 asection *s;
e1a9cb8e 5990
25dbc73a 5991 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
86bbe32f 5992
25dbc73a
AM		 5993 switch (dyn.d_tag)
5994 {
5995 case DT_PLTGOT:
5996 s = htab->plt;
5997 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
5998 break;
86bbe32f 5999
25dbc73a
AM		 6000 case DT_PLTRELSZ:
6001 dyn.d_un.d_val = htab->relplt->size;
6002 break;
e1a9cb8e 6003
25dbc73a
AM		 6004 case DT_JMPREL:
6005 s = htab->relplt;
6006 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6007 break;
2f89ff8d 6008
25dbc73a
AM		 6009 default:
6010 continue;
6011 }
4c45e5c9 6012
25dbc73a
AM		 6013 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6014 }
6015 }
4c45e5c9 6016
25dbc73a
AM		 6017 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6018 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6019 if (htab->got)
6020 {
6021 unsigned char *contents = htab->got->contents;
6022 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
2f89ff8d 6023
25dbc73a
AM		 6024 if (sdyn == NULL)
6025 bfd_put_32 (output_bfd, 0, contents + 4);
6026 else
6027 bfd_put_32 (output_bfd,
6028 sdyn->output_section->vma + sdyn->output_offset,
6029 contents + 4);
6030
6031 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6032 }
6033
6034 return TRUE;
6035}
e1a9cb8e 6036\f
252b5132
RH		 6037#define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6038#define TARGET_LITTLE_NAME "elf32-powerpcle"
6039#define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6040#define TARGET_BIG_NAME "elf32-powerpc"
6041#define ELF_ARCH bfd_arch_powerpc
6042#define ELF_MACHINE_CODE EM_PPC
d0facd1b
NC		 6043#ifdef __QNXTARGET__
6044#define ELF_MAXPAGESIZE 0x1000
6045#else
252b5132 6046#define ELF_MAXPAGESIZE 0x10000
d0facd1b 6047#endif
b1342370 6048#define ELF_MINPAGESIZE 0x1000
252b5132
RH		 6049#define elf_info_to_howto ppc_elf_info_to_howto
6050
6051#ifdef EM_CYGNUS_POWERPC
6052#define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6053#endif
6054
6055#ifdef EM_PPC_OLD
6056#define ELF_MACHINE_ALT2 EM_PPC_OLD
6057#endif
6058
6059#define elf_backend_plt_not_loaded 1
6060#define elf_backend_got_symbol_offset 4
6061#define elf_backend_can_gc_sections 1
51b64d56 6062#define elf_backend_can_refcount 1
252b5132 6063#define elf_backend_got_header_size 12
b491616a 6064#define elf_backend_rela_normal 1
252b5132 6065
43c40ab2 6066#define bfd_elf32_mkobject ppc_elf_mkobject
252b5132 6067#define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
70bccea4 6068#define bfd_elf32_bfd_relax_section ppc_elf_relax_section
252b5132
RH		 6069#define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6070#define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
70bccea4 6071#define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
252b5132 6072
feee612b 6073#define elf_backend_object_p ppc_elf_object_p
252b5132
RH		 6074#define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6075#define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6076#define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6077#define elf_backend_relocate_section ppc_elf_relocate_section
6078#define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6079#define elf_backend_check_relocs ppc_elf_check_relocs
7fce784e 6080#define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
252b5132
RH		 6081#define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6082#define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6083#define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6084#define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6085#define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6086#define elf_backend_fake_sections ppc_elf_fake_sections
6087#define elf_backend_additional_program_headers ppc_elf_additional_program_headers
c5fccbec
DJ		 6088#define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6089#define elf_backend_grok_psinfo ppc_elf_grok_psinfo
29c2fb7c 6090#define elf_backend_reloc_type_class ppc_elf_reloc_type_class
70bccea4
AM		 6091#define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6092#define elf_backend_final_write_processing ppc_elf_final_write_processing
6093#define elf_backend_write_section ppc_elf_write_section
2f89ff8d 6094#define elf_backend_special_sections ppc_elf_special_sections
4c45e5c9 6095#define elf_backend_plt_sym_val ppc_elf_plt_sym_val
252b5132
RH		 6096
6097#include "elf32-target.h"
GDB Binutils - Deliverables
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