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[binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
4
5 This file is part of BFD, the Binary File Descriptor library.
6
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
11
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
20
21 /* This file is based on a preliminary PowerPC ELF ABI. The
22 information may not match the final PowerPC ELF ABI. It includes
23 suggestions from the in-progress Embedded PowerPC ABI, and that
24 information may also not match. */
25
26 #include "bfd.h"
27 #include "sysdep.h"
28 #include "bfdlink.h"
29 #include "libbfd.h"
30 #include "elf-bfd.h"
31 #include "elf/ppc.h"
32
33 #define USE_RELA /* we want RELA relocations, not REL */
34
35 /* PowerPC relocations defined by the ABIs */
36 enum ppc_reloc_type
37 {
38 R_PPC_NONE = 0,
39 R_PPC_ADDR32 = 1,
40 R_PPC_ADDR24 = 2,
41 R_PPC_ADDR16 = 3,
42 R_PPC_ADDR16_LO = 4,
43 R_PPC_ADDR16_HI = 5,
44 R_PPC_ADDR16_HA = 6,
45 R_PPC_ADDR14 = 7,
46 R_PPC_ADDR14_BRTAKEN = 8,
47 R_PPC_ADDR14_BRNTAKEN = 9,
48 R_PPC_REL24 = 10,
49 R_PPC_REL14 = 11,
50 R_PPC_REL14_BRTAKEN = 12,
51 R_PPC_REL14_BRNTAKEN = 13,
52 R_PPC_GOT16 = 14,
53 R_PPC_GOT16_LO = 15,
54 R_PPC_GOT16_HI = 16,
55 R_PPC_GOT16_HA = 17,
56 R_PPC_PLTREL24 = 18,
57 R_PPC_COPY = 19,
58 R_PPC_GLOB_DAT = 20,
59 R_PPC_JMP_SLOT = 21,
60 R_PPC_RELATIVE = 22,
61 R_PPC_LOCAL24PC = 23,
62 R_PPC_UADDR32 = 24,
63 R_PPC_UADDR16 = 25,
64 R_PPC_REL32 = 26,
65 R_PPC_PLT32 = 27,
66 R_PPC_PLTREL32 = 28,
67 R_PPC_PLT16_LO = 29,
68 R_PPC_PLT16_HI = 30,
69 R_PPC_PLT16_HA = 31,
70 R_PPC_SDAREL16 = 32,
71 R_PPC_SECTOFF = 33,
72 R_PPC_SECTOFF_LO = 34,
73 R_PPC_SECTOFF_HI = 35,
74 R_PPC_SECTOFF_HA = 36,
75
76 /* The remaining relocs are from the Embedded ELF ABI, and are not
77 in the SVR4 ELF ABI. */
78 R_PPC_EMB_NADDR32 = 101,
79 R_PPC_EMB_NADDR16 = 102,
80 R_PPC_EMB_NADDR16_LO = 103,
81 R_PPC_EMB_NADDR16_HI = 104,
82 R_PPC_EMB_NADDR16_HA = 105,
83 R_PPC_EMB_SDAI16 = 106,
84 R_PPC_EMB_SDA2I16 = 107,
85 R_PPC_EMB_SDA2REL = 108,
86 R_PPC_EMB_SDA21 = 109,
87 R_PPC_EMB_MRKREF = 110,
88 R_PPC_EMB_RELSEC16 = 111,
89 R_PPC_EMB_RELST_LO = 112,
90 R_PPC_EMB_RELST_HI = 113,
91 R_PPC_EMB_RELST_HA = 114,
92 R_PPC_EMB_BIT_FLD = 115,
93 R_PPC_EMB_RELSDA = 116,
94
95 /* This is a phony reloc to handle any old fashioned TOC16 references
96 that may still be in object files. */
97 R_PPC_TOC16 = 255,
98
99 R_PPC_max
100 };
101
102 static reloc_howto_type *ppc_elf_reloc_type_lookup
103 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
104 static void ppc_elf_info_to_howto
105 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
106 static void ppc_elf_howto_init PARAMS ((void));
107 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
108 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
109 static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
110 static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
111 static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
112
113 static int ppc_elf_additional_program_headers PARAMS ((bfd *));
114 static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
115
116 static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
117 Elf32_Internal_Shdr *,
118 char *));
119 static boolean ppc_elf_fake_sections
120 PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
121
122 static elf_linker_section_t *ppc_elf_create_linker_section
123 PARAMS ((bfd *abfd,
124 struct bfd_link_info *info,
125 enum elf_linker_section_enum));
126
127 static boolean ppc_elf_check_relocs PARAMS ((bfd *,
128 struct bfd_link_info *,
129 asection *,
130 const Elf_Internal_Rela *));
131
132 static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
133 struct elf_link_hash_entry *));
134
135 static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR));
136
137 static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
138
139 static boolean ppc_elf_relocate_section PARAMS ((bfd *,
140 struct bfd_link_info *info,
141 bfd *,
142 asection *,
143 bfd_byte *,
144 Elf_Internal_Rela *relocs,
145 Elf_Internal_Sym *local_syms,
146 asection **));
147
148 static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *,
149 struct bfd_link_info *,
150 const Elf_Internal_Sym *,
151 const char **,
152 flagword *,
153 asection **,
154 bfd_vma *));
155
156 static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
157 struct bfd_link_info *,
158 struct elf_link_hash_entry *,
159 Elf_Internal_Sym *));
160
161 static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
162
163 #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
164 #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
165 #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
166
167 /* The name of the dynamic interpreter. This is put in the .interp
168 section. */
169
170 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
171
172 /* The size in bytes of an entry in the procedure linkage table, and of the initial size
173 of the plt reserved for the dynamic linker. */
174
175 #define PLT_ENTRY_SIZE 12
176 #define PLT_INITIAL_ENTRY_SIZE 72
177
178 \f
179 static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ];
180
181 static reloc_howto_type ppc_elf_howto_raw[] =
182 {
183 /* This reloc does nothing. */
184 HOWTO (R_PPC_NONE, /* type */
185 0, /* rightshift */
186 2, /* size (0 = byte, 1 = short, 2 = long) */
187 32, /* bitsize */
188 false, /* pc_relative */
189 0, /* bitpos */
190 complain_overflow_bitfield, /* complain_on_overflow */
191 bfd_elf_generic_reloc, /* special_function */
192 "R_PPC_NONE", /* name */
193 false, /* partial_inplace */
194 0, /* src_mask */
195 0, /* dst_mask */
196 false), /* pcrel_offset */
197
198 /* A standard 32 bit relocation. */
199 HOWTO (R_PPC_ADDR32, /* type */
200 0, /* rightshift */
201 2, /* size (0 = byte, 1 = short, 2 = long) */
202 32, /* bitsize */
203 false, /* pc_relative */
204 0, /* bitpos */
205 complain_overflow_bitfield, /* complain_on_overflow */
206 bfd_elf_generic_reloc, /* special_function */
207 "R_PPC_ADDR32", /* name */
208 false, /* partial_inplace */
209 0, /* src_mask */
210 0xffffffff, /* dst_mask */
211 false), /* pcrel_offset */
212
213 /* An absolute 26 bit branch; the lower two bits must be zero.
214 FIXME: we don't check that, we just clear them. */
215 HOWTO (R_PPC_ADDR24, /* type */
216 0, /* rightshift */
217 2, /* size (0 = byte, 1 = short, 2 = long) */
218 26, /* bitsize */
219 false, /* pc_relative */
220 0, /* bitpos */
221 complain_overflow_bitfield, /* complain_on_overflow */
222 bfd_elf_generic_reloc, /* special_function */
223 "R_PPC_ADDR24", /* name */
224 false, /* partial_inplace */
225 0, /* src_mask */
226 0x3fffffc, /* dst_mask */
227 false), /* pcrel_offset */
228
229 /* A standard 16 bit relocation. */
230 HOWTO (R_PPC_ADDR16, /* type */
231 0, /* rightshift */
232 1, /* size (0 = byte, 1 = short, 2 = long) */
233 16, /* bitsize */
234 false, /* pc_relative */
235 0, /* bitpos */
236 complain_overflow_bitfield, /* complain_on_overflow */
237 bfd_elf_generic_reloc, /* special_function */
238 "R_PPC_ADDR16", /* name */
239 false, /* partial_inplace */
240 0, /* src_mask */
241 0xffff, /* dst_mask */
242 false), /* pcrel_offset */
243
244 /* A 16 bit relocation without overflow. */
245 HOWTO (R_PPC_ADDR16_LO, /* type */
246 0, /* rightshift */
247 1, /* size (0 = byte, 1 = short, 2 = long) */
248 16, /* bitsize */
249 false, /* pc_relative */
250 0, /* bitpos */
251 complain_overflow_dont,/* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_PPC_ADDR16_LO", /* name */
254 false, /* partial_inplace */
255 0, /* src_mask */
256 0xffff, /* dst_mask */
257 false), /* pcrel_offset */
258
259 /* The high order 16 bits of an address. */
260 HOWTO (R_PPC_ADDR16_HI, /* type */
261 16, /* rightshift */
262 1, /* size (0 = byte, 1 = short, 2 = long) */
263 16, /* bitsize */
264 false, /* pc_relative */
265 0, /* bitpos */
266 complain_overflow_dont, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_PPC_ADDR16_HI", /* name */
269 false, /* partial_inplace */
270 0, /* src_mask */
271 0xffff, /* dst_mask */
272 false), /* pcrel_offset */
273
274 /* The high order 16 bits of an address, plus 1 if the contents of
275 the low 16 bits, treated as a signed number, is negative. */
276 HOWTO (R_PPC_ADDR16_HA, /* type */
277 16, /* rightshift */
278 1, /* size (0 = byte, 1 = short, 2 = long) */
279 16, /* bitsize */
280 false, /* pc_relative */
281 0, /* bitpos */
282 complain_overflow_dont, /* complain_on_overflow */
283 ppc_elf_addr16_ha_reloc, /* special_function */
284 "R_PPC_ADDR16_HA", /* name */
285 false, /* partial_inplace */
286 0, /* src_mask */
287 0xffff, /* dst_mask */
288 false), /* pcrel_offset */
289
290 /* An absolute 16 bit branch; the lower two bits must be zero.
291 FIXME: we don't check that, we just clear them. */
292 HOWTO (R_PPC_ADDR14, /* type */
293 0, /* rightshift */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
295 16, /* bitsize */
296 false, /* pc_relative */
297 0, /* bitpos */
298 complain_overflow_bitfield, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_PPC_ADDR14", /* name */
301 false, /* partial_inplace */
302 0, /* src_mask */
303 0xfffc, /* dst_mask */
304 false), /* pcrel_offset */
305
306 /* An absolute 16 bit branch, for which bit 10 should be set to
307 indicate that the branch is expected to be taken. The lower two
308 bits must be zero. */
309 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
310 0, /* rightshift */
311 2, /* size (0 = byte, 1 = short, 2 = long) */
312 16, /* bitsize */
313 false, /* pc_relative */
314 0, /* bitpos */
315 complain_overflow_bitfield, /* complain_on_overflow */
316 bfd_elf_generic_reloc, /* special_function */
317 "R_PPC_ADDR14_BRTAKEN",/* name */
318 false, /* partial_inplace */
319 0, /* src_mask */
320 0xfffc, /* dst_mask */
321 false), /* pcrel_offset */
322
323 /* An absolute 16 bit branch, for which bit 10 should be set to
324 indicate that the branch is not expected to be taken. The lower
325 two bits must be zero. */
326 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
327 0, /* rightshift */
328 2, /* size (0 = byte, 1 = short, 2 = long) */
329 16, /* bitsize */
330 false, /* pc_relative */
331 0, /* bitpos */
332 complain_overflow_bitfield, /* complain_on_overflow */
333 bfd_elf_generic_reloc, /* special_function */
334 "R_PPC_ADDR14_BRNTAKEN",/* name */
335 false, /* partial_inplace */
336 0, /* src_mask */
337 0xfffc, /* dst_mask */
338 false), /* pcrel_offset */
339
340 /* A relative 26 bit branch; the lower two bits must be zero. */
341 HOWTO (R_PPC_REL24, /* type */
342 0, /* rightshift */
343 2, /* size (0 = byte, 1 = short, 2 = long) */
344 26, /* bitsize */
345 true, /* pc_relative */
346 0, /* bitpos */
347 complain_overflow_signed, /* complain_on_overflow */
348 bfd_elf_generic_reloc, /* special_function */
349 "R_PPC_REL24", /* name */
350 false, /* partial_inplace */
351 0, /* src_mask */
352 0x3fffffc, /* dst_mask */
353 true), /* pcrel_offset */
354
355 /* A relative 16 bit branch; the lower two bits must be zero. */
356 HOWTO (R_PPC_REL14, /* type */
357 0, /* rightshift */
358 2, /* size (0 = byte, 1 = short, 2 = long) */
359 16, /* bitsize */
360 true, /* pc_relative */
361 0, /* bitpos */
362 complain_overflow_signed, /* complain_on_overflow */
363 bfd_elf_generic_reloc, /* special_function */
364 "R_PPC_REL14", /* name */
365 false, /* partial_inplace */
366 0, /* src_mask */
367 0xfffc, /* dst_mask */
368 true), /* pcrel_offset */
369
370 /* A relative 16 bit branch. Bit 10 should be set to indicate that
371 the branch is expected to be taken. The lower two bits must be
372 zero. */
373 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
374 0, /* rightshift */
375 2, /* size (0 = byte, 1 = short, 2 = long) */
376 16, /* bitsize */
377 true, /* pc_relative */
378 0, /* bitpos */
379 complain_overflow_signed, /* complain_on_overflow */
380 bfd_elf_generic_reloc, /* special_function */
381 "R_PPC_REL14_BRTAKEN", /* name */
382 false, /* partial_inplace */
383 0, /* src_mask */
384 0xfffc, /* dst_mask */
385 true), /* pcrel_offset */
386
387 /* A relative 16 bit branch. Bit 10 should be set to indicate that
388 the branch is not expected to be taken. The lower two bits must
389 be zero. */
390 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
391 0, /* rightshift */
392 2, /* size (0 = byte, 1 = short, 2 = long) */
393 16, /* bitsize */
394 true, /* pc_relative */
395 0, /* bitpos */
396 complain_overflow_signed, /* complain_on_overflow */
397 bfd_elf_generic_reloc, /* special_function */
398 "R_PPC_REL14_BRNTAKEN",/* name */
399 false, /* partial_inplace */
400 0, /* src_mask */
401 0xfffc, /* dst_mask */
402 true), /* pcrel_offset */
403
404 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
405 symbol. */
406 HOWTO (R_PPC_GOT16, /* type */
407 0, /* rightshift */
408 1, /* size (0 = byte, 1 = short, 2 = long) */
409 16, /* bitsize */
410 false, /* pc_relative */
411 0, /* bitpos */
412 complain_overflow_signed, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_PPC_GOT16", /* name */
415 false, /* partial_inplace */
416 0, /* src_mask */
417 0xffff, /* dst_mask */
418 false), /* pcrel_offset */
419
420 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
421 the symbol. */
422 HOWTO (R_PPC_GOT16_LO, /* type */
423 0, /* rightshift */
424 1, /* size (0 = byte, 1 = short, 2 = long) */
425 16, /* bitsize */
426 false, /* pc_relative */
427 0, /* bitpos */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_PPC_GOT16_LO", /* name */
431 false, /* partial_inplace */
432 0, /* src_mask */
433 0xffff, /* dst_mask */
434 false), /* pcrel_offset */
435
436 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
437 the symbol. */
438 HOWTO (R_PPC_GOT16_HI, /* type */
439 16, /* rightshift */
440 1, /* size (0 = byte, 1 = short, 2 = long) */
441 16, /* bitsize */
442 false, /* pc_relative */
443 0, /* bitpos */
444 complain_overflow_bitfield, /* complain_on_overflow */
445 bfd_elf_generic_reloc, /* special_function */
446 "R_PPC_GOT16_HI", /* name */
447 false, /* partial_inplace */
448 0, /* src_mask */
449 0xffff, /* dst_mask */
450 false), /* pcrel_offset */
451
452 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
453 the symbol. */
454 HOWTO (R_PPC_GOT16_HA, /* type */
455 0, /* rightshift */
456 1, /* size (0 = byte, 1 = short, 2 = long) */
457 16, /* bitsize */
458 false, /* pc_relative */
459 0, /* bitpos */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* special_function */
462 "R_PPC_GOT16_HA", /* name */
463 false, /* partial_inplace */
464 0, /* src_mask */
465 0xffff, /* dst_mask */
466 false), /* pcrel_offset */
467
468 /* Like R_PPC_REL24, but referring to the procedure linkage table
469 entry for the symbol. FIXME: Not supported. */
470 HOWTO (R_PPC_PLTREL24, /* type */
471 0, /* rightshift */
472 2, /* size (0 = byte, 1 = short, 2 = long) */
473 26, /* bitsize */
474 true, /* pc_relative */
475 0, /* bitpos */
476 complain_overflow_signed, /* complain_on_overflow */
477 bfd_elf_generic_reloc, /* special_function */
478 "R_PPC_PLTREL24", /* name */
479 false, /* partial_inplace */
480 0, /* src_mask */
481 0x3fffffc, /* dst_mask */
482 true), /* pcrel_offset */
483
484 /* This is used only by the dynamic linker. The symbol should exist
485 both in the object being run and in some shared library. The
486 dynamic linker copies the data addressed by the symbol from the
487 shared library into the object. I have no idea what the purpose
488 of this is. */
489 HOWTO (R_PPC_COPY, /* type */
490 0, /* rightshift */
491 2, /* size (0 = byte, 1 = short, 2 = long) */
492 32, /* bitsize */
493 false, /* pc_relative */
494 0, /* bitpos */
495 complain_overflow_bitfield, /* complain_on_overflow */
496 bfd_elf_generic_reloc, /* special_function */
497 "R_PPC_COPY", /* name */
498 false, /* partial_inplace */
499 0, /* src_mask */
500 0, /* dst_mask */
501 false), /* pcrel_offset */
502
503 /* Like R_PPC_ADDR32, but used when setting global offset table
504 entries. */
505 HOWTO (R_PPC_GLOB_DAT, /* type */
506 0, /* rightshift */
507 2, /* size (0 = byte, 1 = short, 2 = long) */
508 32, /* bitsize */
509 false, /* pc_relative */
510 0, /* bitpos */
511 complain_overflow_bitfield, /* complain_on_overflow */
512 bfd_elf_generic_reloc, /* special_function */
513 "R_PPC_GLOB_DAT", /* name */
514 false, /* partial_inplace */
515 0, /* src_mask */
516 0xffffffff, /* dst_mask */
517 false), /* pcrel_offset */
518
519 /* Marks a procedure linkage table entry for a symbol. */
520 HOWTO (R_PPC_JMP_SLOT, /* type */
521 0, /* rightshift */
522 2, /* size (0 = byte, 1 = short, 2 = long) */
523 32, /* bitsize */
524 false, /* pc_relative */
525 0, /* bitpos */
526 complain_overflow_bitfield, /* complain_on_overflow */
527 bfd_elf_generic_reloc, /* special_function */
528 "R_PPC_JMP_SLOT", /* name */
529 false, /* partial_inplace */
530 0, /* src_mask */
531 0, /* dst_mask */
532 false), /* pcrel_offset */
533
534 /* Used only by the dynamic linker. When the object is run, this
535 longword is set to the load address of the object, plus the
536 addend. */
537 HOWTO (R_PPC_RELATIVE, /* type */
538 0, /* rightshift */
539 2, /* size (0 = byte, 1 = short, 2 = long) */
540 32, /* bitsize */
541 false, /* pc_relative */
542 0, /* bitpos */
543 complain_overflow_bitfield, /* complain_on_overflow */
544 bfd_elf_generic_reloc, /* special_function */
545 "R_PPC_RELATIVE", /* name */
546 false, /* partial_inplace */
547 0, /* src_mask */
548 0xffffffff, /* dst_mask */
549 false), /* pcrel_offset */
550
551 /* Like R_PPC_REL24, but uses the value of the symbol within the
552 object rather than the final value. Normally used for
553 _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
554 HOWTO (R_PPC_LOCAL24PC, /* type */
555 0, /* rightshift */
556 2, /* size (0 = byte, 1 = short, 2 = long) */
557 26, /* bitsize */
558 true, /* pc_relative */
559 0, /* bitpos */
560 complain_overflow_signed, /* complain_on_overflow */
561 bfd_elf_generic_reloc, /* special_function */
562 "R_PPC_LOCAL24PC", /* name */
563 false, /* partial_inplace */
564 0, /* src_mask */
565 0x3fffffc, /* dst_mask */
566 true), /* pcrel_offset */
567
568 /* Like R_PPC_ADDR32, but may be unaligned. */
569 HOWTO (R_PPC_UADDR32, /* type */
570 0, /* rightshift */
571 2, /* size (0 = byte, 1 = short, 2 = long) */
572 32, /* bitsize */
573 false, /* pc_relative */
574 0, /* bitpos */
575 complain_overflow_bitfield, /* complain_on_overflow */
576 bfd_elf_generic_reloc, /* special_function */
577 "R_PPC_UADDR32", /* name */
578 false, /* partial_inplace */
579 0, /* src_mask */
580 0xffffffff, /* dst_mask */
581 false), /* pcrel_offset */
582
583 /* Like R_PPC_ADDR16, but may be unaligned. */
584 HOWTO (R_PPC_UADDR16, /* type */
585 0, /* rightshift */
586 1, /* size (0 = byte, 1 = short, 2 = long) */
587 16, /* bitsize */
588 false, /* pc_relative */
589 0, /* bitpos */
590 complain_overflow_bitfield, /* complain_on_overflow */
591 bfd_elf_generic_reloc, /* special_function */
592 "R_PPC_UADDR16", /* name */
593 false, /* partial_inplace */
594 0, /* src_mask */
595 0xffff, /* dst_mask */
596 false), /* pcrel_offset */
597
598 /* 32-bit PC relative */
599 HOWTO (R_PPC_REL32, /* type */
600 0, /* rightshift */
601 2, /* size (0 = byte, 1 = short, 2 = long) */
602 32, /* bitsize */
603 true, /* pc_relative */
604 0, /* bitpos */
605 complain_overflow_bitfield, /* complain_on_overflow */
606 bfd_elf_generic_reloc, /* special_function */
607 "R_PPC_REL32", /* name */
608 false, /* partial_inplace */
609 0, /* src_mask */
610 0xffffffff, /* dst_mask */
611 true), /* pcrel_offset */
612
613 /* 32-bit relocation to the symbol's procedure linkage table.
614 FIXEME: not supported. */
615 HOWTO (R_PPC_PLT32, /* type */
616 0, /* rightshift */
617 2, /* size (0 = byte, 1 = short, 2 = long) */
618 32, /* bitsize */
619 false, /* pc_relative */
620 0, /* bitpos */
621 complain_overflow_bitfield, /* complain_on_overflow */
622 bfd_elf_generic_reloc, /* special_function */
623 "R_PPC_PLT32", /* name */
624 false, /* partial_inplace */
625 0, /* src_mask */
626 0, /* dst_mask */
627 false), /* pcrel_offset */
628
629 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
630 FIXEME: not supported. */
631 HOWTO (R_PPC_PLTREL32, /* type */
632 0, /* rightshift */
633 2, /* size (0 = byte, 1 = short, 2 = long) */
634 32, /* bitsize */
635 true, /* pc_relative */
636 0, /* bitpos */
637 complain_overflow_bitfield, /* complain_on_overflow */
638 bfd_elf_generic_reloc, /* special_function */
639 "R_PPC_PLTREL32", /* name */
640 false, /* partial_inplace */
641 0, /* src_mask */
642 0, /* dst_mask */
643 true), /* pcrel_offset */
644
645 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
646 the symbol. */
647 HOWTO (R_PPC_PLT16_LO, /* type */
648 0, /* rightshift */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
650 16, /* bitsize */
651 false, /* pc_relative */
652 0, /* bitpos */
653 complain_overflow_bitfield, /* complain_on_overflow */
654 bfd_elf_generic_reloc, /* special_function */
655 "R_PPC_PLT16_LO", /* name */
656 false, /* partial_inplace */
657 0, /* src_mask */
658 0xffff, /* dst_mask */
659 false), /* pcrel_offset */
660
661 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
662 the symbol. */
663 HOWTO (R_PPC_PLT16_HI, /* type */
664 16, /* rightshift */
665 1, /* size (0 = byte, 1 = short, 2 = long) */
666 16, /* bitsize */
667 false, /* pc_relative */
668 0, /* bitpos */
669 complain_overflow_bitfield, /* complain_on_overflow */
670 bfd_elf_generic_reloc, /* special_function */
671 "R_PPC_PLT16_HI", /* name */
672 false, /* partial_inplace */
673 0, /* src_mask */
674 0xffff, /* dst_mask */
675 false), /* pcrel_offset */
676
677 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
678 the symbol. FIXME: Not supported. */
679 HOWTO (R_PPC_PLT16_HA, /* type */
680 0, /* rightshift */
681 1, /* size (0 = byte, 1 = short, 2 = long) */
682 16, /* bitsize */
683 false, /* pc_relative */
684 0, /* bitpos */
685 complain_overflow_bitfield, /* complain_on_overflow */
686 bfd_elf_generic_reloc, /* special_function */
687 "R_PPC_PLT16_HA", /* name */
688 false, /* partial_inplace */
689 0, /* src_mask */
690 0xffff, /* dst_mask */
691 false), /* pcrel_offset */
692
693 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
694 small data items. */
695 HOWTO (R_PPC_SDAREL16, /* type */
696 0, /* rightshift */
697 1, /* size (0 = byte, 1 = short, 2 = long) */
698 16, /* bitsize */
699 false, /* pc_relative */
700 0, /* bitpos */
701 complain_overflow_signed, /* complain_on_overflow */
702 bfd_elf_generic_reloc, /* special_function */
703 "R_PPC_SDAREL16", /* name */
704 false, /* partial_inplace */
705 0, /* src_mask */
706 0xffff, /* dst_mask */
707 false), /* pcrel_offset */
708
709 /* 32-bit section relative relocation. */
710 HOWTO (R_PPC_SECTOFF, /* type */
711 0, /* rightshift */
712 2, /* size (0 = byte, 1 = short, 2 = long) */
713 32, /* bitsize */
714 true, /* pc_relative */
715 0, /* bitpos */
716 complain_overflow_bitfield, /* complain_on_overflow */
717 bfd_elf_generic_reloc, /* special_function */
718 "R_PPC_SECTOFF", /* name */
719 false, /* partial_inplace */
720 0, /* src_mask */
721 0, /* dst_mask */
722 true), /* pcrel_offset */
723
724 /* 16-bit lower half section relative relocation. */
725 HOWTO (R_PPC_SECTOFF_LO, /* type */
726 0, /* rightshift */
727 1, /* size (0 = byte, 1 = short, 2 = long) */
728 16, /* bitsize */
729 false, /* pc_relative */
730 0, /* bitpos */
731 complain_overflow_bitfield, /* complain_on_overflow */
732 bfd_elf_generic_reloc, /* special_function */
733 "R_PPC_SECTOFF_LO", /* name */
734 false, /* partial_inplace */
735 0, /* src_mask */
736 0xffff, /* dst_mask */
737 false), /* pcrel_offset */
738
739 /* 16-bit upper half section relative relocation. */
740 HOWTO (R_PPC_SECTOFF_HI, /* type */
741 16, /* rightshift */
742 1, /* size (0 = byte, 1 = short, 2 = long) */
743 16, /* bitsize */
744 false, /* pc_relative */
745 0, /* bitpos */
746 complain_overflow_bitfield, /* complain_on_overflow */
747 bfd_elf_generic_reloc, /* special_function */
748 "R_PPC_SECTOFF_HI", /* name */
749 false, /* partial_inplace */
750 0, /* src_mask */
751 0xffff, /* dst_mask */
752 false), /* pcrel_offset */
753
754 /* 16-bit upper half adjusted section relative relocation. */
755 HOWTO (R_PPC_SECTOFF_HA, /* type */
756 0, /* rightshift */
757 1, /* size (0 = byte, 1 = short, 2 = long) */
758 16, /* bitsize */
759 false, /* pc_relative */
760 0, /* bitpos */
761 complain_overflow_bitfield, /* complain_on_overflow */
762 bfd_elf_generic_reloc, /* special_function */
763 "R_PPC_SECTOFF_HA", /* name */
764 false, /* partial_inplace */
765 0, /* src_mask */
766 0xffff, /* dst_mask */
767 false), /* pcrel_offset */
768
769 /* The remaining relocs are from the Embedded ELF ABI, and are not
770 in the SVR4 ELF ABI. */
771
772 /* 32 bit value resulting from the addend minus the symbol */
773 HOWTO (R_PPC_EMB_NADDR32, /* type */
774 0, /* rightshift */
775 2, /* size (0 = byte, 1 = short, 2 = long) */
776 32, /* bitsize */
777 false, /* pc_relative */
778 0, /* bitpos */
779 complain_overflow_bitfield, /* complain_on_overflow */
780 bfd_elf_generic_reloc, /* special_function */
781 "R_PPC_EMB_NADDR32", /* name */
782 false, /* partial_inplace */
783 0, /* src_mask */
784 0xffffffff, /* dst_mask */
785 false), /* pcrel_offset */
786
787 /* 16 bit value resulting from the addend minus the symbol */
788 HOWTO (R_PPC_EMB_NADDR16, /* type */
789 0, /* rightshift */
790 1, /* size (0 = byte, 1 = short, 2 = long) */
791 16, /* bitsize */
792 false, /* pc_relative */
793 0, /* bitpos */
794 complain_overflow_bitfield, /* complain_on_overflow */
795 bfd_elf_generic_reloc, /* special_function */
796 "R_PPC_EMB_NADDR16", /* name */
797 false, /* partial_inplace */
798 0, /* src_mask */
799 0xffff, /* dst_mask */
800 false), /* pcrel_offset */
801
802 /* 16 bit value resulting from the addend minus the symbol */
803 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
804 0, /* rightshift */
805 1, /* size (0 = byte, 1 = short, 2 = long) */
806 16, /* bitsize */
807 false, /* pc_relative */
808 0, /* bitpos */
809 complain_overflow_dont,/* complain_on_overflow */
810 bfd_elf_generic_reloc, /* special_function */
811 "R_PPC_EMB_ADDR16_LO", /* name */
812 false, /* partial_inplace */
813 0, /* src_mask */
814 0xffff, /* dst_mask */
815 false), /* pcrel_offset */
816
817 /* The high order 16 bits of the addend minus the symbol */
818 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
819 16, /* rightshift */
820 1, /* size (0 = byte, 1 = short, 2 = long) */
821 16, /* bitsize */
822 false, /* pc_relative */
823 0, /* bitpos */
824 complain_overflow_dont, /* complain_on_overflow */
825 bfd_elf_generic_reloc, /* special_function */
826 "R_PPC_EMB_NADDR16_HI", /* name */
827 false, /* partial_inplace */
828 0, /* src_mask */
829 0xffff, /* dst_mask */
830 false), /* pcrel_offset */
831
832 /* The high order 16 bits of the result of the addend minus the address,
833 plus 1 if the contents of the low 16 bits, treated as a signed number,
834 is negative. */
835 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
836 16, /* rightshift */
837 1, /* size (0 = byte, 1 = short, 2 = long) */
838 16, /* bitsize */
839 false, /* pc_relative */
840 0, /* bitpos */
841 complain_overflow_dont, /* complain_on_overflow */
842 bfd_elf_generic_reloc, /* special_function */
843 "R_PPC_EMB_NADDR16_HA", /* name */
844 false, /* partial_inplace */
845 0, /* src_mask */
846 0xffff, /* dst_mask */
847 false), /* pcrel_offset */
848
849 /* 16 bit value resulting from allocating a 4 byte word to hold an
850 address in the .sdata section, and returning the offset from
851 _SDA_BASE_ for that relocation */
852 HOWTO (R_PPC_EMB_SDAI16, /* type */
853 0, /* rightshift */
854 1, /* size (0 = byte, 1 = short, 2 = long) */
855 16, /* bitsize */
856 false, /* pc_relative */
857 0, /* bitpos */
858 complain_overflow_bitfield, /* complain_on_overflow */
859 bfd_elf_generic_reloc, /* special_function */
860 "R_PPC_EMB_SDAI16", /* name */
861 false, /* partial_inplace */
862 0, /* src_mask */
863 0xffff, /* dst_mask */
864 false), /* pcrel_offset */
865
866 /* 16 bit value resulting from allocating a 4 byte word to hold an
867 address in the .sdata2 section, and returning the offset from
868 _SDA2_BASE_ for that relocation */
869 HOWTO (R_PPC_EMB_SDA2I16, /* type */
870 0, /* rightshift */
871 1, /* size (0 = byte, 1 = short, 2 = long) */
872 16, /* bitsize */
873 false, /* pc_relative */
874 0, /* bitpos */
875 complain_overflow_bitfield, /* complain_on_overflow */
876 bfd_elf_generic_reloc, /* special_function */
877 "R_PPC_EMB_SDA2I16", /* name */
878 false, /* partial_inplace */
879 0, /* src_mask */
880 0xffff, /* dst_mask */
881 false), /* pcrel_offset */
882
883 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
884 small data items. */
885 HOWTO (R_PPC_EMB_SDA2REL, /* type */
886 0, /* rightshift */
887 1, /* size (0 = byte, 1 = short, 2 = long) */
888 16, /* bitsize */
889 false, /* pc_relative */
890 0, /* bitpos */
891 complain_overflow_signed, /* complain_on_overflow */
892 bfd_elf_generic_reloc, /* special_function */
893 "R_PPC_EMB_SDA2REL", /* name */
894 false, /* partial_inplace */
895 0, /* src_mask */
896 0xffff, /* dst_mask */
897 false), /* pcrel_offset */
898
899 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
900 signed offset from the appropriate base, and filling in the register
901 field with the appropriate register (0, 2, or 13). */
902 HOWTO (R_PPC_EMB_SDA21, /* type */
903 0, /* rightshift */
904 2, /* size (0 = byte, 1 = short, 2 = long) */
905 16, /* bitsize */
906 false, /* pc_relative */
907 0, /* bitpos */
908 complain_overflow_signed, /* complain_on_overflow */
909 bfd_elf_generic_reloc, /* special_function */
910 "R_PPC_EMB_SDA21", /* name */
911 false, /* partial_inplace */
912 0, /* src_mask */
913 0xffff, /* dst_mask */
914 false), /* pcrel_offset */
915
916 /* Relocation not handled: R_PPC_EMB_MRKREF */
917 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
918 /* Relocation not handled: R_PPC_EMB_RELST_LO */
919 /* Relocation not handled: R_PPC_EMB_RELST_HI */
920 /* Relocation not handled: R_PPC_EMB_RELST_HA */
921 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
922
923 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
924 in the 16 bit signed offset from the appropriate base, and filling in the
925 register field with the appropriate register (0, 2, or 13). */
926 HOWTO (R_PPC_EMB_RELSDA, /* type */
927 0, /* rightshift */
928 1, /* size (0 = byte, 1 = short, 2 = long) */
929 16, /* bitsize */
930 true, /* pc_relative */
931 0, /* bitpos */
932 complain_overflow_signed, /* complain_on_overflow */
933 bfd_elf_generic_reloc, /* special_function */
934 "R_PPC_EMB_RELSDA", /* name */
935 false, /* partial_inplace */
936 0, /* src_mask */
937 0xffff, /* dst_mask */
938 false), /* pcrel_offset */
939
940 /* Phony reloc to handle AIX style TOC entries */
941 HOWTO (R_PPC_TOC16, /* type */
942 0, /* rightshift */
943 1, /* size (0 = byte, 1 = short, 2 = long) */
944 16, /* bitsize */
945 false, /* pc_relative */
946 0, /* bitpos */
947 complain_overflow_signed, /* complain_on_overflow */
948 bfd_elf_generic_reloc, /* special_function */
949 "R_PPC_TOC16", /* name */
950 false, /* partial_inplace */
951 0, /* src_mask */
952 0xffff, /* dst_mask */
953 false), /* pcrel_offset */
954 };
955
956 \f
957 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
958
959 static void
960 ppc_elf_howto_init ()
961 {
962 unsigned int i, type;
963
964 for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
965 {
966 type = ppc_elf_howto_raw[i].type;
967 BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0]));
968 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
969 }
970 }
971
972 \f
973 static reloc_howto_type *
974 ppc_elf_reloc_type_lookup (abfd, code)
975 bfd *abfd;
976 bfd_reloc_code_real_type code;
977 {
978 enum ppc_reloc_type ppc_reloc = R_PPC_NONE;
979
980 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
981 ppc_elf_howto_init ();
982
983 switch ((int)code)
984 {
985 default:
986 return (reloc_howto_type *)NULL;
987
988 case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
989 case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
990 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
991 case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
992 case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
993 case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
994 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
995 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
996 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
997 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
998 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
999 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
1000 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
1001 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
1002 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
1003 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
1004 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
1005 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
1006 case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
1007 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
1008 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
1009 case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
1010 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
1011 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
1012 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
1013 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
1014 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
1015 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
1016 case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
1017 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
1018 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
1019 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
1020 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
1021 case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
1022 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
1023 case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
1024 case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
1025 case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
1026 case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
1027 case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
1028 case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
1029 case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
1030 case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
1031 case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
1032 case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
1033 case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
1034 case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
1035 case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
1036 case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
1037 case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
1038 case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
1039 }
1040
1041 return ppc_elf_howto_table[ (int)ppc_reloc ];
1042 };
1043
1044 /* Set the howto pointer for a PowerPC ELF reloc. */
1045
1046 static void
1047 ppc_elf_info_to_howto (abfd, cache_ptr, dst)
1048 bfd *abfd;
1049 arelent *cache_ptr;
1050 Elf32_Internal_Rela *dst;
1051 {
1052 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
1053 ppc_elf_howto_init ();
1054
1055 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1056 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1057 }
1058
1059 /* Handle the R_PPC_ADDR16_HA reloc. */
1060
1061 static bfd_reloc_status_type
1062 ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1063 output_bfd, error_message)
1064 bfd *abfd;
1065 arelent *reloc_entry;
1066 asymbol *symbol;
1067 PTR data;
1068 asection *input_section;
1069 bfd *output_bfd;
1070 char **error_message;
1071 {
1072 bfd_vma relocation;
1073
1074 if (output_bfd != NULL)
1075 {
1076 reloc_entry->address += input_section->output_offset;
1077 return bfd_reloc_ok;
1078 }
1079
1080 if (reloc_entry->address > input_section->_cooked_size)
1081 return bfd_reloc_outofrange;
1082
1083 if (bfd_is_com_section (symbol->section))
1084 relocation = 0;
1085 else
1086 relocation = symbol->value;
1087
1088 relocation += symbol->section->output_section->vma;
1089 relocation += symbol->section->output_offset;
1090 relocation += reloc_entry->addend;
1091
1092 reloc_entry->addend += (relocation & 0x8000) << 1;
1093
1094 return bfd_reloc_continue;
1095 }
1096
1097 /* Function to set whether a module needs the -mrelocatable bit set. */
1098
1099 static boolean
1100 ppc_elf_set_private_flags (abfd, flags)
1101 bfd *abfd;
1102 flagword flags;
1103 {
1104 BFD_ASSERT (!elf_flags_init (abfd)
1105 || elf_elfheader (abfd)->e_flags == flags);
1106
1107 elf_elfheader (abfd)->e_flags = flags;
1108 elf_flags_init (abfd) = true;
1109 return true;
1110 }
1111
1112 /* Copy backend specific data from one object module to another */
1113 static boolean
1114 ppc_elf_copy_private_bfd_data (ibfd, obfd)
1115 bfd *ibfd;
1116 bfd *obfd;
1117 {
1118 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1119 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1120 return true;
1121
1122 BFD_ASSERT (!elf_flags_init (obfd)
1123 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
1124
1125 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1126 elf_flags_init (obfd) = true;
1127 return true;
1128 }
1129
1130 /* Merge backend specific data from an object file to the output
1131 object file when linking */
1132 static boolean
1133 ppc_elf_merge_private_bfd_data (ibfd, obfd)
1134 bfd *ibfd;
1135 bfd *obfd;
1136 {
1137 flagword old_flags;
1138 flagword new_flags;
1139 boolean error;
1140
1141 /* Check if we have the same endianess */
1142 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1143 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1144 {
1145 (*_bfd_error_handler)
1146 ("%s: compiled for a %s endian system and target is %s endian",
1147 bfd_get_filename (ibfd),
1148 bfd_big_endian (ibfd) ? "big" : "little",
1149 bfd_big_endian (obfd) ? "big" : "little");
1150
1151 bfd_set_error (bfd_error_wrong_format);
1152 return false;
1153 }
1154
1155 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1156 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1157 return true;
1158
1159 new_flags = elf_elfheader (ibfd)->e_flags;
1160 old_flags = elf_elfheader (obfd)->e_flags;
1161 if (!elf_flags_init (obfd)) /* First call, no flags set */
1162 {
1163 elf_flags_init (obfd) = true;
1164 elf_elfheader (obfd)->e_flags = new_flags;
1165 }
1166
1167 else if (new_flags == old_flags) /* Compatible flags are ok */
1168 ;
1169
1170 else /* Incompatible flags */
1171 {
1172 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
1173 with either. */
1174 error = false;
1175 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1176 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1177 {
1178 error = true;
1179 (*_bfd_error_handler)
1180 ("%s: compiled with -mrelocatable and linked with modules compiled normally",
1181 bfd_get_filename (ibfd));
1182 }
1183 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1184 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1185 {
1186 error = true;
1187 (*_bfd_error_handler)
1188 ("%s: compiled normally and linked with modules compiled with -mrelocatable",
1189 bfd_get_filename (ibfd));
1190 }
1191 /* If -mrelocatable-lib is linked with an object without -mrelocatable-lib, turn off
1192 the -mrelocatable-lib, since at least one module isn't relocatable. */
1193 else if ((old_flags & EF_PPC_RELOCATABLE_LIB) != 0
1194 && (new_flags & EF_PPC_RELOCATABLE_LIB) == 0)
1195 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1196
1197
1198 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
1199 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1200
1201 new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1202 old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1203
1204 /* Warn about any other mismatches */
1205 if (new_flags != old_flags)
1206 {
1207 error = true;
1208 (*_bfd_error_handler)
1209 ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
1210 bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
1211 }
1212
1213 if (error)
1214 {
1215 bfd_set_error (bfd_error_bad_value);
1216 return false;
1217 }
1218 }
1219
1220 return true;
1221 }
1222
1223 \f
1224 /* Handle a PowerPC specific section when reading an object file. This
1225 is called when elfcode.h finds a section with an unknown type. */
1226
1227 static boolean
1228 ppc_elf_section_from_shdr (abfd, hdr, name)
1229 bfd *abfd;
1230 Elf32_Internal_Shdr *hdr;
1231 char *name;
1232 {
1233 asection *newsect;
1234 flagword flags;
1235
1236 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1237 return false;
1238
1239 newsect = hdr->bfd_section;
1240 flags = bfd_get_section_flags (abfd, newsect);
1241 if (hdr->sh_flags & SHF_EXCLUDE)
1242 flags |= SEC_EXCLUDE;
1243
1244 if (hdr->sh_type == SHT_ORDERED)
1245 flags |= SEC_SORT_ENTRIES;
1246
1247 bfd_set_section_flags (abfd, newsect, flags);
1248 return true;
1249 }
1250
1251 \f
1252 /* Set up any other section flags and such that may be necessary. */
1253
1254 static boolean
1255 ppc_elf_fake_sections (abfd, shdr, asect)
1256 bfd *abfd;
1257 Elf32_Internal_Shdr *shdr;
1258 asection *asect;
1259 {
1260 if ((asect->flags & SEC_EXCLUDE) != 0)
1261 shdr->sh_flags |= SHF_EXCLUDE;
1262
1263 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1264 shdr->sh_type = SHT_ORDERED;
1265
1266 return true;
1267 }
1268
1269 \f
1270 /* Create a special linker section */
1271 static elf_linker_section_t *
1272 ppc_elf_create_linker_section (abfd, info, which)
1273 bfd *abfd;
1274 struct bfd_link_info *info;
1275 enum elf_linker_section_enum which;
1276 {
1277 bfd *dynobj = elf_hash_table (info)->dynobj;
1278 elf_linker_section_t *lsect;
1279
1280 /* Record the first bfd section that needs the special section */
1281 if (!dynobj)
1282 dynobj = elf_hash_table (info)->dynobj = abfd;
1283
1284 /* If this is the first time, create the section */
1285 lsect = elf_linker_section (dynobj, which);
1286 if (!lsect)
1287 {
1288 elf_linker_section_t defaults;
1289 static elf_linker_section_t zero_section;
1290
1291 defaults = zero_section;
1292 defaults.which = which;
1293 defaults.hole_written_p = false;
1294 defaults.alignment = 2;
1295 defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1296 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
1297
1298 switch (which)
1299 {
1300 default:
1301 (*_bfd_error_handler) ("%s: Unknown special linker type %d",
1302 bfd_get_filename (abfd),
1303 (int)which);
1304
1305 bfd_set_error (bfd_error_bad_value);
1306 return (elf_linker_section_t *)0;
1307
1308 case LINKER_SECTION_GOT: /* .got section */
1309 defaults.name = ".got";
1310 defaults.rel_name = ".rela.got";
1311 defaults.sym_name = "_GLOBAL_OFFSET_TABLE_";
1312 defaults.max_hole_offset = 32764;
1313 defaults.hole_size = 16;
1314 defaults.sym_offset = 4;
1315 break;
1316
1317 case LINKER_SECTION_PLT: /* .plt section */
1318 defaults.name = ".plt";
1319 defaults.rel_name = ".rela.plt";
1320 defaults.sym_name = (char *)0;
1321 defaults.max_hole_offset = 0;
1322 defaults.hole_size = 0;
1323 defaults.sym_offset = 0;
1324 defaults.flags &= ~SEC_LOAD;
1325 break;
1326
1327 case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
1328 defaults.name = ".sdata";
1329 defaults.rel_name = ".rela.sdata";
1330 defaults.bss_name = ".sbss";
1331 defaults.sym_name = "_SDA_BASE_";
1332 defaults.sym_offset = 32768;
1333 break;
1334
1335 case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
1336 defaults.name = ".sdata2";
1337 defaults.rel_name = ".rela.sdata2";
1338 defaults.bss_name = ".sbss2";
1339 defaults.sym_name = "_SDA2_BASE_";
1340 defaults.sym_offset = 32768;
1341 defaults.flags |= SEC_READONLY;
1342 break;
1343 }
1344
1345 lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
1346 }
1347
1348 return lsect;
1349 }
1350
1351 \f
1352 /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up
1353 the number of section headers. */
1354
1355 static int
1356 ppc_elf_additional_program_headers (abfd)
1357 bfd *abfd;
1358 {
1359 asection *s;
1360 int ret;
1361
1362 ret = 0;
1363
1364 s = bfd_get_section_by_name (abfd, ".interp");
1365 if (s != NULL)
1366 ++ret;
1367
1368 s = bfd_get_section_by_name (abfd, ".sbss2");
1369 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1370 ++ret;
1371
1372 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1373 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1374 ++ret;
1375
1376 return ret;
1377 }
1378
1379 /* Modify the segment map if needed */
1380
1381 static boolean
1382 ppc_elf_modify_segment_map (abfd)
1383 bfd *abfd;
1384 {
1385 return true;
1386 }
1387 \f
1388 /* Adjust a symbol defined by a dynamic object and referenced by a
1389 regular object. The current definition is in some section of the
1390 dynamic object, but we're not including those sections. We have to
1391 change the definition to something the rest of the link can
1392 understand. */
1393
1394 static boolean
1395 ppc_elf_adjust_dynamic_symbol (info, h)
1396 struct bfd_link_info *info;
1397 struct elf_link_hash_entry *h;
1398 {
1399 bfd *dynobj = elf_hash_table (info)->dynobj;
1400 asection *s;
1401 unsigned int power_of_two;
1402 bfd_vma plt_offset;
1403
1404 #ifdef DEBUG
1405 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string);
1406 #endif
1407
1408 /* Make sure we know what is going on here. */
1409 BFD_ASSERT (dynobj != NULL
1410 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1411 || h->weakdef != NULL
1412 || ((h->elf_link_hash_flags
1413 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1414 && (h->elf_link_hash_flags
1415 & ELF_LINK_HASH_REF_REGULAR) != 0
1416 && (h->elf_link_hash_flags
1417 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1418
1419
1420 /* If this is a function, put it in the procedure linkage table. We
1421 will fill in the contents of the procedure linkage table later,
1422 when we know the address of the .got section. */
1423 if (h->type == STT_FUNC
1424 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1425 {
1426 if (! info->shared
1427 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
1428 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0)
1429 {
1430 /* This case can occur if we saw a PLT32 reloc in an input
1431 file, but the symbol was never referred to by a dynamic
1432 object. In such a case, we don't actually need to build
1433 a procedure linkage table, and we can just do a PC32
1434 reloc instead. */
1435 BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
1436 return true;
1437 }
1438
1439 /* Make sure this symbol is output as a dynamic symbol. */
1440 if (h->dynindx == -1)
1441 {
1442 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1443 return false;
1444 }
1445
1446 s = bfd_get_section_by_name (dynobj, ".plt");
1447 BFD_ASSERT (s != NULL);
1448
1449 /* If this is the first .plt entry, make room for the special
1450 first entry. */
1451 if (s->_raw_size == 0)
1452 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
1453
1454 /* The PowerPC PLT is actually composed of two parts, the first part
1455 is 2 words (for a load and a jump), and then there is a remaining
1456 word available at the end. */
1457 plt_offset = (PLT_INITIAL_ENTRY_SIZE
1458 + 8 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE));
1459
1460 /* If this symbol is not defined in a regular file, and we are
1461 not generating a shared library, then set the symbol to this
1462 location in the .plt. This is required to make function
1463 pointers compare as equal between the normal executable and
1464 the shared library. */
1465 if (! info->shared
1466 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1467 {
1468 h->root.u.def.section = s;
1469 h->root.u.def.value = plt_offset;
1470 }
1471
1472 h->plt_offset = plt_offset;
1473
1474 /* Make room for this entry. */
1475 s->_raw_size += PLT_ENTRY_SIZE;
1476
1477 #if 0
1478 /* We also need to make an entry in the .got.plt section, which
1479 will be placed in the .got section by the linker script. */
1480
1481 s = bfd_get_section_by_name (dynobj, ".got.plt");
1482 BFD_ASSERT (s != NULL);
1483 s->_raw_size += 4;
1484 #endif
1485
1486 /* We also need to make an entry in the .rela.plt section. */
1487
1488 s = bfd_get_section_by_name (dynobj, ".rela.plt");
1489 BFD_ASSERT (s != NULL);
1490 s->_raw_size += sizeof (Elf32_External_Rela);
1491
1492 return true;
1493 }
1494
1495 /* If this is a weak symbol, and there is a real definition, the
1496 processor independent code will have arranged for us to see the
1497 real definition first, and we can just use the same value. */
1498 if (h->weakdef != NULL)
1499 {
1500 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1501 || h->weakdef->root.type == bfd_link_hash_defweak);
1502 h->root.u.def.section = h->weakdef->root.u.def.section;
1503 h->root.u.def.value = h->weakdef->root.u.def.value;
1504 return true;
1505 }
1506
1507 /* This is a reference to a symbol defined by a dynamic object which
1508 is not a function. */
1509
1510 /* If we are creating a shared library, we must presume that the
1511 only references to the symbol are via the global offset table.
1512 For such cases we need not do anything here; the relocations will
1513 be handled correctly by relocate_section. */
1514 if (info->shared)
1515 return true;
1516
1517 /* We must allocate the symbol in our .dynbss section, which will
1518 become part of the .bss section of the executable. There will be
1519 an entry for this symbol in the .dynsym section. The dynamic
1520 object will contain position independent code, so all references
1521 from the dynamic object to this symbol will go through the global
1522 offset table. The dynamic linker will use the .dynsym entry to
1523 determine the address it must put in the global offset table, so
1524 both the dynamic object and the regular object will refer to the
1525 same memory location for the variable. */
1526
1527 s = bfd_get_section_by_name (dynobj, ".dynbss");
1528 BFD_ASSERT (s != NULL);
1529
1530 /* If the symbol is currently defined in the .bss section of the
1531 dynamic object, then it is OK to simply initialize it to zero.
1532 If the symbol is in some other section, we must generate a
1533 R_PPC_COPY reloc to tell the dynamic linker to copy the initial
1534 value out of the dynamic object and into the runtime process
1535 image. We need to remember the offset into the .rela.bss section
1536 we are going to use. */
1537 if ((h->root.u.def.section->flags & SEC_LOAD) != 0)
1538 {
1539 asection *srel;
1540
1541 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1542 BFD_ASSERT (srel != NULL);
1543 srel->_raw_size += sizeof (Elf32_External_Rel);
1544 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1545 }
1546
1547 /* We need to figure out the alignment required for this symbol. I
1548 have no idea how ELF linkers handle this. */
1549 power_of_two = bfd_log2 (h->size);
1550 if (power_of_two > 3)
1551 power_of_two = 3;
1552
1553 /* Apply the required alignment. */
1554 s->_raw_size = BFD_ALIGN (s->_raw_size,
1555 (bfd_size_type) (1 << power_of_two));
1556 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1557 {
1558 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1559 return false;
1560 }
1561
1562 /* Define the symbol as being at this point in the section. */
1563 h->root.u.def.section = s;
1564 h->root.u.def.value = s->_raw_size;
1565
1566 /* Increment the section size to make room for the symbol. */
1567 s->_raw_size += h->size;
1568
1569 return true;
1570 }
1571
1572 \f
1573 /* Increment the index of a dynamic symbol by a given amount. Called
1574 via elf_link_hash_traverse. */
1575
1576 static boolean
1577 ppc_elf_adjust_dynindx (h, cparg)
1578 struct elf_link_hash_entry *h;
1579 PTR cparg;
1580 {
1581 int *cp = (int *) cparg;
1582
1583 #ifdef DEBUG
1584 fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp);
1585 #endif
1586
1587 if (h->dynindx != -1)
1588 h->dynindx += *cp;
1589
1590 return true;
1591 }
1592
1593 \f
1594 /* Set the sizes of the dynamic sections. */
1595
1596 static boolean
1597 ppc_elf_size_dynamic_sections (output_bfd, info)
1598 bfd *output_bfd;
1599 struct bfd_link_info *info;
1600 {
1601 bfd *dynobj;
1602 asection *s;
1603 boolean plt;
1604 boolean relocs;
1605 boolean reltext;
1606
1607 #ifdef DEBUG
1608 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
1609 #endif
1610
1611 dynobj = elf_hash_table (info)->dynobj;
1612 BFD_ASSERT (dynobj != NULL);
1613
1614 if (elf_hash_table (info)->dynamic_sections_created)
1615 {
1616 /* Set the contents of the .interp section to the interpreter. */
1617 if (! info->shared)
1618 {
1619 s = bfd_get_section_by_name (dynobj, ".interp");
1620 BFD_ASSERT (s != NULL);
1621 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1622 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1623 }
1624 }
1625 else
1626 {
1627 /* We may have created entries in the .rela.got, .rela.sdata, and
1628 .rela.sdata2 sections. However, if we are not creating the
1629 dynamic sections, we will not actually use these entries. Reset
1630 the size of .rela.got, et al, which will cause it to get
1631 stripped from the output file below. */
1632 static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 };
1633 char **p;
1634
1635 for (p = rela_sections; *p != (char *)0; p++)
1636 {
1637 s = bfd_get_section_by_name (dynobj, *p);
1638 if (s != NULL)
1639 s->_raw_size = 0;
1640 }
1641 }
1642
1643 /* The check_relocs and adjust_dynamic_symbol entry points have
1644 determined the sizes of the various dynamic sections. Allocate
1645 memory for them. */
1646 plt = false;
1647 relocs = false;
1648 reltext = false;
1649 for (s = dynobj->sections; s != NULL; s = s->next)
1650 {
1651 const char *name;
1652 boolean strip;
1653
1654 if ((s->flags & SEC_LINKER_CREATED) == 0)
1655 continue;
1656
1657 /* It's OK to base decisions on the section name, because none
1658 of the dynobj section names depend upon the input files. */
1659 name = bfd_get_section_name (dynobj, s);
1660
1661 strip = false;
1662
1663 if (strcmp (name, ".plt") == 0)
1664 {
1665 if (s->_raw_size == 0)
1666 {
1667 /* Strip this section if we don't need it; see the
1668 comment below. */
1669 strip = true;
1670 }
1671 else
1672 {
1673 /* Remember whether there is a PLT. */
1674 plt = true;
1675 }
1676 }
1677 else if (strncmp (name, ".rela", 5) == 0)
1678 {
1679 if (s->_raw_size == 0)
1680 {
1681 /* If we don't need this section, strip it from the
1682 output file. This is mostly to handle .rela.bss and
1683 .rela.plt. We must create both sections in
1684 create_dynamic_sections, because they must be created
1685 before the linker maps input sections to output
1686 sections. The linker does that before
1687 adjust_dynamic_symbol is called, and it is that
1688 function which decides whether anything needs to go
1689 into these sections. */
1690 strip = true;
1691 }
1692 else
1693 {
1694 asection *target;
1695
1696 /* Remember whether there are any reloc sections other
1697 than .rel.plt. */
1698 if (strcmp (name, ".rela.plt") != 0)
1699 {
1700 const char *outname;
1701
1702 relocs = true;
1703
1704 /* If this relocation section applies to a read only
1705 section, then we probably need a DT_TEXTREL
1706 entry. The entries in the .rel.plt section
1707 really apply to the .got section, which we
1708 created ourselves and so know is not readonly. */
1709 outname = bfd_get_section_name (output_bfd,
1710 s->output_section);
1711 target = bfd_get_section_by_name (output_bfd, outname + 4);
1712 if (target != NULL
1713 && (target->flags & SEC_READONLY) != 0)
1714 reltext = true;
1715 }
1716
1717 /* We use the reloc_count field as a counter if we need
1718 to copy relocs into the output file. */
1719 s->reloc_count = 0;
1720 }
1721 }
1722 else if (strcmp (name, ".got") != 0
1723 && strcmp (name, ".sdata") != 0
1724 && strcmp (name, ".sdata2") != 0)
1725 {
1726 /* It's not one of our sections, so don't allocate space. */
1727 continue;
1728 }
1729
1730 if (strip)
1731 {
1732 asection **spp;
1733
1734 for (spp = &s->output_section->owner->sections;
1735 *spp != s->output_section;
1736 spp = &(*spp)->next)
1737 ;
1738 *spp = s->output_section->next;
1739 --s->output_section->owner->section_count;
1740
1741 continue;
1742 }
1743
1744 /* Allocate memory for the section contents. */
1745 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
1746 if (s->contents == NULL && s->_raw_size != 0)
1747 return false;
1748 }
1749
1750 if (elf_hash_table (info)->dynamic_sections_created)
1751 {
1752 /* Add some entries to the .dynamic section. We fill in the
1753 values later, in ppc_elf_finish_dynamic_sections, but we
1754 must add the entries now so that we get the correct size for
1755 the .dynamic section. The DT_DEBUG entry is filled in by the
1756 dynamic linker and used by the debugger. */
1757 if (! info->shared)
1758 {
1759 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
1760 return false;
1761 }
1762
1763 if (plt)
1764 {
1765 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)
1766 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
1767 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_REL)
1768 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
1769 return false;
1770 }
1771
1772 if (relocs)
1773 {
1774 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
1775 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, DT_RELA)
1776 || ! bfd_elf32_add_dynamic_entry (info, DT_RELENT,
1777 sizeof (Elf32_External_Rela)))
1778 return false;
1779 }
1780
1781 if (reltext)
1782 {
1783 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
1784 return false;
1785 }
1786 }
1787
1788 /* If we are generating a shared library, we generate a section
1789 symbol for each output section. These are local symbols, which
1790 means that they must come first in the dynamic symbol table.
1791 That means we must increment the dynamic symbol index of every
1792 other dynamic symbol. */
1793 if (info->shared)
1794 {
1795 int c, i;
1796
1797 c = bfd_count_sections (output_bfd);
1798 elf_link_hash_traverse (elf_hash_table (info),
1799 ppc_elf_adjust_dynindx,
1800 (PTR) &c);
1801 elf_hash_table (info)->dynsymcount += c;
1802
1803 for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
1804 {
1805 elf_section_data (s)->dynindx = i;
1806 /* These symbols will have no names, so we don't need to
1807 fiddle with dynstr_index. */
1808 }
1809 }
1810
1811 return true;
1812 }
1813
1814 \f
1815 /* Look through the relocs for a section during the first phase, and
1816 allocate space in the global offset table or procedure linkage
1817 table. */
1818
1819 static boolean
1820 ppc_elf_check_relocs (abfd, info, sec, relocs)
1821 bfd *abfd;
1822 struct bfd_link_info *info;
1823 asection *sec;
1824 const Elf_Internal_Rela *relocs;
1825 {
1826 boolean ret = true;
1827 bfd *dynobj;
1828 Elf_Internal_Shdr *symtab_hdr;
1829 struct elf_link_hash_entry **sym_hashes;
1830 const Elf_Internal_Rela *rel;
1831 const Elf_Internal_Rela *rel_end;
1832 bfd_vma *local_got_offsets;
1833 elf_linker_section_t *got;
1834 elf_linker_section_t *sdata;
1835 elf_linker_section_t *sdata2;
1836 asection *sreloc;
1837
1838 if (info->relocateable)
1839 return true;
1840
1841 #ifdef DEBUG
1842 fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
1843 bfd_get_section_name (abfd, sec),
1844 bfd_get_filename (abfd));
1845 #endif
1846
1847 /* Create the linker generated sections all the time so that the special
1848 symbols are created. */
1849 if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL)
1850 {
1851 got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT);
1852 if (!got)
1853 ret = false;
1854 }
1855
1856 #if 0
1857 if ((plt = elf_linker_section (abfd, LINKER_SECTION_PLT)) == NULL)
1858 {
1859 plt = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_PLT);
1860 if (!plt)
1861 ret = false;
1862 }
1863 #endif
1864
1865 if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
1866 {
1867 sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
1868 if (!sdata)
1869 ret = false;
1870 }
1871
1872
1873 if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
1874 {
1875 sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
1876 if (!sdata2)
1877 ret = false;
1878 }
1879
1880 dynobj = elf_hash_table (info)->dynobj;
1881 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1882 sym_hashes = elf_sym_hashes (abfd);
1883 local_got_offsets = elf_local_got_offsets (abfd);
1884
1885 sreloc = NULL;
1886
1887 rel_end = relocs + sec->reloc_count;
1888 for (rel = relocs; rel < rel_end; rel++)
1889 {
1890 unsigned long r_symndx;
1891 struct elf_link_hash_entry *h;
1892
1893 r_symndx = ELF32_R_SYM (rel->r_info);
1894 if (r_symndx < symtab_hdr->sh_info)
1895 h = NULL;
1896 else
1897 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1898
1899 switch (ELF32_R_TYPE (rel->r_info))
1900 {
1901 /* GOT16 relocations */
1902 case R_PPC_GOT16:
1903 case R_PPC_GOT16_LO:
1904 case R_PPC_GOT16_HI:
1905 case R_PPC_GOT16_HA:
1906 if (got->rel_section == NULL
1907 && (h != NULL || info->shared)
1908 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1909 {
1910 ret = false;
1911 break;
1912 }
1913
1914 if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel))
1915 ret = false;
1916
1917 break;
1918
1919 /* Indirect .sdata relocation */
1920 case R_PPC_EMB_SDAI16:
1921 if (info->shared)
1922 {
1923 (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
1924 bfd_get_filename (abfd),
1925 "R_PPC_EMB_SDAI16");
1926 ret = false;
1927 break;
1928 }
1929
1930 if (got->rel_section == NULL
1931 && (h != NULL || info->shared)
1932 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1933 {
1934 ret = false;
1935 break;
1936 }
1937
1938 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
1939 ret = false;
1940
1941 break;
1942
1943 /* Indirect .sdata2 relocation */
1944 case R_PPC_EMB_SDA2I16:
1945 if (info->shared)
1946 {
1947 (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
1948 bfd_get_filename (abfd),
1949 "R_PPC_EMB_SDA2I16");
1950 ret = false;
1951 break;
1952 }
1953
1954 if (got->rel_section == NULL
1955 && (h != NULL || info->shared)
1956 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1957 return false;
1958
1959 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
1960 return false;
1961
1962 break;
1963
1964 case R_PPC_SDAREL16:
1965 case R_PPC_EMB_SDA2REL:
1966 case R_PPC_EMB_SDA21:
1967 if (info->shared)
1968 {
1969 (*_bfd_error_handler) ("%s: relocation %s cannot be used when making a shared object",
1970 bfd_get_filename (abfd),
1971 ppc_elf_howto_table[(int)ELF32_R_TYPE (rel->r_info)]->name);
1972 ret = false;
1973 }
1974 break;
1975
1976 case R_PPC_PLT32:
1977 case R_PPC_PLTREL24:
1978 case R_PPC_PLT16_LO:
1979 case R_PPC_PLT16_HI:
1980 case R_PPC_PLT16_HA:
1981 #ifdef DEBUG
1982 fprintf (stderr, "Reloc requires a PLT entry\n");
1983 #endif
1984 /* This symbol requires a procedure linkage table entry. We
1985 actually build the entry in adjust_dynamic_symbol,
1986 because this might be a case of linking PIC code without
1987 linking in any dynamic objects, in which case we don't
1988 need to generate a procedure linkage table after all. */
1989
1990 if (h == NULL)
1991 {
1992 /* It does not make sense to have a procedure linkage
1993 table entry for a local symbol. */
1994 bfd_set_error (bfd_error_bad_value);
1995 ret = false;
1996 break;
1997 }
1998
1999 /* Make sure this symbol is output as a dynamic symbol. */
2000 if (h->dynindx == -1)
2001 {
2002 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2003 {
2004 ret = false;
2005 break;
2006 }
2007 }
2008
2009 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2010 break;
2011
2012 /* the following relocations don't need to propigate the relocation if
2013 linking a shared object since they are section relative. */
2014 case R_PPC_SECTOFF:
2015 case R_PPC_SECTOFF_LO:
2016 case R_PPC_SECTOFF_HI:
2017 case R_PPC_SECTOFF_HA:
2018 break;
2019
2020 /* This refers only to functions defined in the shared library */
2021 case R_PPC_LOCAL24PC:
2022 break;
2023
2024 /* When creating a shared object, we must copy these
2025 relocs into the output file. We create a reloc
2026 section in dynobj and make room for the reloc. */
2027 case R_PPC_REL24:
2028 if (h != NULL
2029 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2030 break;
2031 /* fall through */
2032
2033 case R_PPC_REL14:
2034 case R_PPC_REL14_BRTAKEN:
2035 case R_PPC_REL14_BRNTAKEN:
2036 if (h == NULL)
2037 break;
2038 /* fall through */
2039
2040 default:
2041 if (info->shared
2042 && (sec->flags & SEC_ALLOC) != 0)
2043 {
2044 #ifdef DEBUG
2045 fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n",
2046 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
2047 #endif
2048 if (sreloc == NULL)
2049 {
2050 const char *name;
2051
2052 name = (bfd_elf_string_from_elf_section
2053 (abfd,
2054 elf_elfheader (abfd)->e_shstrndx,
2055 elf_section_data (sec)->rel_hdr.sh_name));
2056 if (name == NULL)
2057 {
2058 ret = false;
2059 break;
2060 }
2061
2062 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2063 && strcmp (bfd_get_section_name (abfd, sec),
2064 name + 5) == 0);
2065
2066 sreloc = bfd_get_section_by_name (dynobj, name);
2067 if (sreloc == NULL)
2068 {
2069 sreloc = bfd_make_section (dynobj, name);
2070 if (sreloc == NULL
2071 || ! bfd_set_section_flags (dynobj, sreloc,
2072 (SEC_ALLOC
2073 | SEC_LOAD
2074 | SEC_HAS_CONTENTS
2075 | SEC_IN_MEMORY
2076 | SEC_LINKER_CREATED
2077 | SEC_READONLY))
2078 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
2079 {
2080 ret = false;
2081 break;
2082 }
2083 }
2084 }
2085
2086 sreloc->_raw_size += sizeof (Elf32_External_Rela);
2087 }
2088
2089 break;
2090 }
2091 }
2092
2093 return ret;
2094 }
2095
2096 \f
2097 /* Hook called by the linker routine which adds symbols from an object
2098 file. We use it to put .comm items in .sbss, and not .bss. */
2099
2100 /*ARGSUSED*/
2101 static boolean
2102 ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2103 bfd *abfd;
2104 struct bfd_link_info *info;
2105 const Elf_Internal_Sym *sym;
2106 const char **namep;
2107 flagword *flagsp;
2108 asection **secp;
2109 bfd_vma *valp;
2110 {
2111 if (sym->st_shndx == SHN_COMMON && !info->relocateable && sym->st_size <= bfd_get_gp_size (abfd))
2112 {
2113 /* Common symbols less than or equal to -G nn bytes are automatically
2114 put into .sdata. */
2115 elf_linker_section_t *sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
2116 if (!sdata->bss_section)
2117 {
2118 /* We don't go through bfd_make_section, because we don't
2119 want to attach this common section to DYNOBJ. The linker
2120 will move the symbols to the appropriate output section
2121 when it defines common symbols. */
2122 sdata->bss_section = ((asection *)
2123 bfd_zalloc (abfd, sizeof (asection)));
2124 if (sdata->bss_section == NULL)
2125 return false;
2126 sdata->bss_section->name = sdata->bss_name;
2127 sdata->bss_section->flags = SEC_IS_COMMON;
2128 sdata->bss_section->output_section = sdata->bss_section;
2129 sdata->bss_section->symbol =
2130 (asymbol *) bfd_zalloc (abfd, sizeof (asymbol));
2131 sdata->bss_section->symbol_ptr_ptr =
2132 (asymbol **) bfd_zalloc (abfd, sizeof (asymbol *));
2133 if (sdata->bss_section->symbol == NULL
2134 || sdata->bss_section->symbol_ptr_ptr == NULL)
2135 return false;
2136 sdata->bss_section->symbol->name = sdata->bss_name;
2137 sdata->bss_section->symbol->flags = BSF_SECTION_SYM;
2138 sdata->bss_section->symbol->section = sdata->bss_section;
2139 *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol;
2140 }
2141
2142 *secp = sdata->bss_section;
2143 *valp = sym->st_size;
2144 }
2145
2146 return true;
2147 }
2148
2149 \f
2150 /* Finish up dynamic symbol handling. We set the contents of various
2151 dynamic sections here. */
2152
2153 static boolean
2154 ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
2155 bfd *output_bfd;
2156 struct bfd_link_info *info;
2157 struct elf_link_hash_entry *h;
2158 Elf_Internal_Sym *sym;
2159 {
2160 bfd *dynobj;
2161
2162 #ifdef DEBUG
2163 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s", h->root.root.string);
2164 #endif
2165
2166 dynobj = elf_hash_table (info)->dynobj;
2167 BFD_ASSERT (dynobj != NULL);
2168
2169 if (h->plt_offset != (bfd_vma) -1)
2170 {
2171 asection *splt;
2172 asection *srela;
2173 Elf_Internal_Rela rela;
2174
2175 #ifdef DEBUG
2176 fprintf (stderr, ", plt_offset = %d", h->plt_offset);
2177 #endif
2178
2179 /* This symbol has an entry in the procedure linkage table. Set
2180 it up. */
2181
2182 BFD_ASSERT (h->dynindx != -1);
2183
2184 splt = bfd_get_section_by_name (dynobj, ".plt");
2185 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2186 BFD_ASSERT (splt != NULL && srela != NULL);
2187
2188 /* We don't need to fill in the .plt. The solaris dynamic linker will
2189 fill it in. */
2190
2191 /* Fill in the entry in the .rela.plt section. */
2192 rela.r_offset = (splt->output_section->vma
2193 + splt->output_offset
2194 + h->plt_offset);
2195 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
2196 rela.r_addend = 0;
2197 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2198 ((Elf32_External_Rela *) srela->contents
2199 + ((h->plt_offset - PLT_INITIAL_ENTRY_SIZE) / 8)));
2200
2201 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2202 {
2203 /* Mark the symbol as undefined, rather than as defined in
2204 the .plt section. Leave the value alone. */
2205 sym->st_shndx = SHN_UNDEF;
2206 }
2207 }
2208
2209 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
2210 {
2211 asection *s;
2212 Elf_Internal_Rela rela;
2213
2214 /* This symbols needs a copy reloc. Set it up. */
2215
2216 #ifdef DEBUG
2217 fprintf (stderr, ", copy");
2218 #endif
2219
2220 BFD_ASSERT (h->dynindx != -1);
2221
2222 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2223 ".rela.bss");
2224 BFD_ASSERT (s != NULL);
2225
2226 rela.r_offset = (h->root.u.def.value
2227 + h->root.u.def.section->output_section->vma
2228 + h->root.u.def.section->output_offset);
2229 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
2230 rela.r_addend = 0;
2231 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2232 ((Elf32_External_Rela *) s->contents
2233 + s->reloc_count));
2234 ++s->reloc_count;
2235 }
2236
2237 #ifdef DEBUG
2238 fprintf (stderr, "\n");
2239 #endif
2240
2241 /* Mark some specially defined symbols as absolute. */
2242 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2243 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2244 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2245 sym->st_shndx = SHN_ABS;
2246
2247 return true;
2248 }
2249
2250 \f
2251 /* Finish up the dynamic sections. */
2252
2253 static boolean
2254 ppc_elf_finish_dynamic_sections (output_bfd, info)
2255 bfd *output_bfd;
2256 struct bfd_link_info *info;
2257 {
2258 asection *sdyn;
2259 bfd *dynobj = elf_hash_table (info)->dynobj;
2260 elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT);
2261
2262 #ifdef DEBUG
2263 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
2264 #endif
2265
2266 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2267
2268 if (elf_hash_table (info)->dynamic_sections_created)
2269 {
2270 asection *splt;
2271 Elf32_External_Dyn *dyncon, *dynconend;
2272
2273 splt = bfd_get_section_by_name (dynobj, ".plt");
2274 BFD_ASSERT (splt != NULL && sdyn != NULL);
2275
2276 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2277 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2278 for (; dyncon < dynconend; dyncon++)
2279 {
2280 Elf_Internal_Dyn dyn;
2281 const char *name;
2282 boolean size;
2283
2284 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2285
2286 switch (dyn.d_tag)
2287 {
2288 case DT_PLTGOT: name = ".plt"; size = false; break;
2289 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
2290 case DT_JMPREL: name = ".rela.plt"; size = false; break;
2291 default: name = NULL; size = false; break;
2292 }
2293
2294 if (name != NULL)
2295 {
2296 asection *s;
2297
2298 s = bfd_get_section_by_name (output_bfd, name);
2299 if (s == NULL)
2300 dyn.d_un.d_val = 0;
2301 else
2302 {
2303 if (! size)
2304 dyn.d_un.d_ptr = s->vma;
2305 else
2306 {
2307 if (s->_cooked_size != 0)
2308 dyn.d_un.d_val = s->_cooked_size;
2309 else
2310 dyn.d_un.d_val = s->_raw_size;
2311 }
2312 }
2313 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2314 }
2315 }
2316 }
2317
2318 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
2319 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
2320 if (got)
2321 {
2322 unsigned char *contents = got->section->contents + got->hole_offset;
2323 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
2324
2325 if (sdyn == NULL)
2326 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
2327 else
2328 bfd_put_32 (output_bfd,
2329 sdyn->output_section->vma + sdyn->output_offset,
2330 contents+4);
2331
2332 elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4;
2333 }
2334
2335 if (info->shared)
2336 {
2337 asection *sdynsym;
2338 asection *s;
2339 Elf_Internal_Sym sym;
2340
2341 /* Set up the section symbols for the output sections. */
2342
2343 sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
2344 BFD_ASSERT (sdynsym != NULL);
2345
2346 sym.st_size = 0;
2347 sym.st_name = 0;
2348 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
2349 sym.st_other = 0;
2350
2351 for (s = output_bfd->sections; s != NULL; s = s->next)
2352 {
2353 int indx;
2354
2355 sym.st_value = s->vma;
2356
2357 indx = elf_section_data (s)->this_idx;
2358 BFD_ASSERT (indx > 0);
2359 sym.st_shndx = indx;
2360
2361 bfd_elf32_swap_symbol_out (output_bfd, &sym,
2362 (PTR) (((Elf32_External_Sym *)
2363 sdynsym->contents)
2364 + elf_section_data (s)->dynindx));
2365 }
2366
2367 /* Set the sh_info field of the output .dynsym section to the
2368 index of the first global symbol. */
2369 elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
2370 bfd_count_sections (output_bfd) + 1;
2371 }
2372
2373 return true;
2374 }
2375
2376 \f
2377 /* The RELOCATE_SECTION function is called by the ELF backend linker
2378 to handle the relocations for a section.
2379
2380 The relocs are always passed as Rela structures; if the section
2381 actually uses Rel structures, the r_addend field will always be
2382 zero.
2383
2384 This function is responsible for adjust the section contents as
2385 necessary, and (if using Rela relocs and generating a
2386 relocateable output file) adjusting the reloc addend as
2387 necessary.
2388
2389 This function does not have to worry about setting the reloc
2390 address or the reloc symbol index.
2391
2392 LOCAL_SYMS is a pointer to the swapped in local symbols.
2393
2394 LOCAL_SECTIONS is an array giving the section in the input file
2395 corresponding to the st_shndx field of each local symbol.
2396
2397 The global hash table entry for the global symbols can be found
2398 via elf_sym_hashes (input_bfd).
2399
2400 When generating relocateable output, this function must handle
2401 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2402 going to be the section symbol corresponding to the output
2403 section, which means that the addend must be adjusted
2404 accordingly. */
2405
2406 static boolean
2407 ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
2408 contents, relocs, local_syms, local_sections)
2409 bfd *output_bfd;
2410 struct bfd_link_info *info;
2411 bfd *input_bfd;
2412 asection *input_section;
2413 bfd_byte *contents;
2414 Elf_Internal_Rela *relocs;
2415 Elf_Internal_Sym *local_syms;
2416 asection **local_sections;
2417 {
2418 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2419 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2420 bfd *dynobj = elf_hash_table (info)->dynobj;
2421 elf_linker_section_t *got = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_GOT) : NULL;
2422 elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL;
2423 elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL;
2424 Elf_Internal_Rela *rel = relocs;
2425 Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
2426 asection *sreloc = NULL;
2427 boolean ret = true;
2428 long insn;
2429
2430 #ifdef DEBUG
2431 fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
2432 bfd_get_filename (input_bfd),
2433 bfd_section_name(input_bfd, input_section),
2434 (long)input_section->reloc_count,
2435 (info->relocateable) ? " (relocatable)" : "");
2436 #endif
2437
2438 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
2439 ppc_elf_howto_init ();
2440
2441 for (; rel < relend; rel++)
2442 {
2443 enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
2444 bfd_vma offset = rel->r_offset;
2445 bfd_vma addend = rel->r_addend;
2446 bfd_reloc_status_type r = bfd_reloc_other;
2447 Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0;
2448 asection *sec = (asection *)0;
2449 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0;
2450 const char *sym_name = (const char *)0;
2451 reloc_howto_type *howto;
2452 unsigned long r_symndx;
2453 bfd_vma relocation;
2454
2455 /* Unknown relocation handling */
2456 if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type])
2457 {
2458 (*_bfd_error_handler) ("%s: unknown relocation type %d",
2459 bfd_get_filename (input_bfd),
2460 (int)r_type);
2461
2462 bfd_set_error (bfd_error_bad_value);
2463 ret = false;
2464 continue;
2465 }
2466
2467 howto = ppc_elf_howto_table[(int)r_type];
2468 r_symndx = ELF32_R_SYM (rel->r_info);
2469
2470 if (info->relocateable)
2471 {
2472 /* This is a relocateable link. We don't have to change
2473 anything, unless the reloc is against a section symbol,
2474 in which case we have to adjust according to where the
2475 section symbol winds up in the output section. */
2476 if (r_symndx < symtab_hdr->sh_info)
2477 {
2478 sym = local_syms + r_symndx;
2479 if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2480 {
2481 sec = local_sections[r_symndx];
2482 addend = rel->r_addend += sec->output_offset + sym->st_value;
2483 }
2484 }
2485
2486 #ifdef DEBUG
2487 fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
2488 howto->name,
2489 (int)r_type,
2490 r_symndx,
2491 (long)offset,
2492 (long)addend);
2493 #endif
2494 continue;
2495 }
2496
2497 /* This is a final link. */
2498 if (r_symndx < symtab_hdr->sh_info)
2499 {
2500 sym = local_syms + r_symndx;
2501 sec = local_sections[r_symndx];
2502 sym_name = "<local symbol>";
2503
2504 relocation = (sec->output_section->vma
2505 + sec->output_offset
2506 + sym->st_value);
2507 }
2508 else
2509 {
2510 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2511 while (h->root.type == bfd_link_hash_indirect
2512 || h->root.type == bfd_link_hash_warning)
2513 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2514 sym_name = h->root.root.string;
2515 if (h->root.type == bfd_link_hash_defined
2516 || h->root.type == bfd_link_hash_defweak)
2517 {
2518 sec = h->root.u.def.section;
2519 if ((r_type == R_PPC_PLT32
2520 && h->plt_offset != (bfd_vma) -1)
2521 || ((r_type == R_PPC_GOT16
2522 || r_type == R_PPC_GOT16_LO
2523 || r_type == R_PPC_GOT16_HI
2524 || r_type == R_PPC_GOT16_HA)
2525 && elf_hash_table (info)->dynamic_sections_created
2526 && (! info->shared
2527 || ! info->symbolic
2528 || (h->elf_link_hash_flags
2529 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2530 || (info->shared
2531 && (! info->symbolic
2532 || (h->elf_link_hash_flags
2533 & ELF_LINK_HASH_DEF_REGULAR) == 0)
2534 && (input_section->flags & SEC_ALLOC) != 0
2535 && (r_type == R_PPC_ADDR32
2536 || r_type == R_PPC_ADDR24
2537 || r_type == R_PPC_ADDR16
2538 || r_type == R_PPC_ADDR16_LO
2539 || r_type == R_PPC_ADDR16_HI
2540 || r_type == R_PPC_ADDR16_HA
2541 || r_type == R_PPC_ADDR14
2542 || r_type == R_PPC_ADDR14_BRTAKEN
2543 || r_type == R_PPC_ADDR14_BRNTAKEN
2544 || r_type == R_PPC_PLTREL24
2545 || r_type == R_PPC_COPY
2546 || r_type == R_PPC_GLOB_DAT
2547 || r_type == R_PPC_JMP_SLOT
2548 || r_type == R_PPC_UADDR32
2549 || r_type == R_PPC_UADDR16
2550 || r_type == R_PPC_REL32
2551 || r_type == R_PPC_SDAREL16
2552 || r_type == R_PPC_EMB_NADDR32
2553 || r_type == R_PPC_EMB_NADDR16
2554 || r_type == R_PPC_EMB_NADDR16_LO
2555 || r_type == R_PPC_EMB_NADDR16_HI
2556 || r_type == R_PPC_EMB_NADDR16_HA
2557 || r_type == R_PPC_EMB_SDAI16
2558 || r_type == R_PPC_EMB_SDA2I16
2559 || r_type == R_PPC_EMB_SDA2REL
2560 || r_type == R_PPC_EMB_SDA21
2561 || r_type == R_PPC_EMB_MRKREF
2562 || r_type == R_PPC_EMB_BIT_FLD
2563 || r_type == R_PPC_EMB_RELSDA
2564 || ((r_type == R_PPC_REL24
2565 || r_type == R_PPC_REL14
2566 || r_type == R_PPC_REL14_BRTAKEN
2567 || r_type == R_PPC_REL14_BRNTAKEN
2568 || r_type == R_PPC_RELATIVE)
2569 && strcmp (h->root.root.string,
2570 "_GLOBAL_OFFSET_TABLE_") != 0))))
2571 {
2572 /* In these cases, we don't need the relocation
2573 value. We check specially because in some
2574 obscure cases sec->output_section will be NULL. */
2575 relocation = 0;
2576 }
2577 else
2578 relocation = (h->root.u.def.value
2579 + sec->output_section->vma
2580 + sec->output_offset);
2581 }
2582 else if (h->root.type == bfd_link_hash_undefweak)
2583 relocation = 0;
2584 else if (info->shared)
2585 relocation = 0;
2586 else
2587 {
2588 (*info->callbacks->undefined_symbol)(info,
2589 h->root.root.string,
2590 input_bfd,
2591 input_section,
2592 rel->r_offset);
2593 ret = false;
2594 continue;
2595 }
2596 }
2597
2598 switch ((int)r_type)
2599 {
2600 default:
2601 (*_bfd_error_handler) ("%s: unknown relocation type %d for symbol %s",
2602 bfd_get_filename (input_bfd),
2603 (int)r_type, sym_name);
2604
2605 bfd_set_error (bfd_error_bad_value);
2606 ret = false;
2607 continue;
2608
2609 /* relocations that need no special processing */
2610 case (int)R_PPC_LOCAL24PC:
2611 break;
2612
2613 case (int)R_PPC_REL24:
2614 case (int)R_PPC_REL14:
2615 if (h != NULL
2616 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2617 break;
2618 /* fall through */
2619
2620 /* Relocations that need to be propigated if this is a shared object */
2621 case (int)R_PPC_NONE:
2622 case (int)R_PPC_ADDR32:
2623 case (int)R_PPC_ADDR24:
2624 case (int)R_PPC_ADDR16:
2625 case (int)R_PPC_ADDR16_LO:
2626 case (int)R_PPC_ADDR16_HI:
2627 case (int)R_PPC_ADDR14:
2628 case (int)R_PPC_UADDR32:
2629 case (int)R_PPC_UADDR16:
2630 case (int)R_PPC_REL32:
2631 case (int)R_PPC_PLTREL24:
2632 if (info->shared
2633 && (input_section->flags & SEC_ALLOC) != 0)
2634 {
2635 Elf_Internal_Rela outrel;
2636 boolean skip;
2637
2638 #ifdef DEBUG
2639 fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n",
2640 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
2641 #endif
2642
2643 /* When generating a shared object, these relocations
2644 are copied into the output file to be resolved at run
2645 time. */
2646
2647 if (sreloc == NULL)
2648 {
2649 const char *name;
2650
2651 name = (bfd_elf_string_from_elf_section
2652 (input_bfd,
2653 elf_elfheader (input_bfd)->e_shstrndx,
2654 elf_section_data (input_section)->rel_hdr.sh_name));
2655 if (name == NULL)
2656 return false;
2657
2658 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2659 && strcmp (bfd_get_section_name (input_bfd,
2660 input_section),
2661 name + 5) == 0);
2662
2663 sreloc = bfd_get_section_by_name (dynobj, name);
2664 BFD_ASSERT (sreloc != NULL);
2665 }
2666
2667 skip = false;
2668
2669 if (elf_section_data (input_section)->stab_info == NULL)
2670 outrel.r_offset = rel->r_offset;
2671 else
2672 {
2673 bfd_vma off;
2674
2675 off = (_bfd_stab_section_offset
2676 (output_bfd, &elf_hash_table (info)->stab_info,
2677 input_section,
2678 &elf_section_data (input_section)->stab_info,
2679 rel->r_offset));
2680 if (off == (bfd_vma) -1)
2681 skip = true;
2682 outrel.r_offset = off;
2683 }
2684
2685 outrel.r_offset += (input_section->output_section->vma
2686 + input_section->output_offset);
2687
2688 if (skip)
2689 memset (&outrel, 0, sizeof outrel);
2690 /* h->dynindx may be -1 if this symbol was marked to
2691 become local. */
2692 else if (h != NULL
2693 && ((! info->symbolic && h->dynindx != -1)
2694 || (h->elf_link_hash_flags
2695 & ELF_LINK_HASH_DEF_REGULAR) == 0))
2696 {
2697 BFD_ASSERT (h->dynindx != -1);
2698 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
2699 outrel.r_addend = rel->r_addend;
2700 }
2701 else
2702 {
2703 if (r_type == R_PPC_ADDR32)
2704 {
2705 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
2706 outrel.r_addend = relocation + rel->r_addend;
2707 }
2708 else
2709 {
2710 long indx;
2711
2712 if (h == NULL)
2713 sec = local_sections[r_symndx];
2714 else
2715 {
2716 BFD_ASSERT (h->root.type == bfd_link_hash_defined
2717 || (h->root.type
2718 == bfd_link_hash_defweak));
2719 sec = h->root.u.def.section;
2720 }
2721 if (sec != NULL && bfd_is_abs_section (sec))
2722 indx = 0;
2723 else if (sec == NULL || sec->owner == NULL)
2724 {
2725 bfd_set_error (bfd_error_bad_value);
2726 return false;
2727 }
2728 else
2729 {
2730 asection *osec;
2731
2732 osec = sec->output_section;
2733 indx = elf_section_data (osec)->dynindx;
2734 if (indx == 0)
2735 abort ();
2736 }
2737
2738 outrel.r_info = ELF32_R_INFO (indx, r_type);
2739 outrel.r_addend = relocation + rel->r_addend;
2740 }
2741 }
2742
2743 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
2744 (((Elf32_External_Rela *)
2745 sreloc->contents)
2746 + sreloc->reloc_count));
2747 ++sreloc->reloc_count;
2748
2749 /* This reloc will be computed at runtime, so there's no
2750 need to do anything now. */
2751 continue;
2752 }
2753 break;
2754
2755 /* branch taken prediction relocations */
2756 case (int)R_PPC_ADDR14_BRTAKEN:
2757 case (int)R_PPC_REL14_BRTAKEN:
2758 insn = bfd_get_32 (output_bfd, contents + offset);
2759 if ((relocation - offset) & 0x8000)
2760 insn &= ~BRANCH_PREDICT_BIT;
2761 else
2762 insn |= BRANCH_PREDICT_BIT;
2763 bfd_put_32 (output_bfd, insn, contents + offset);
2764 break;
2765
2766 /* branch not taken predicition relocations */
2767 case (int)R_PPC_ADDR14_BRNTAKEN:
2768 case (int)R_PPC_REL14_BRNTAKEN:
2769 insn = bfd_get_32 (output_bfd, contents + offset);
2770 if ((relocation - offset) & 0x8000)
2771 insn |= BRANCH_PREDICT_BIT;
2772 else
2773 insn &= ~BRANCH_PREDICT_BIT;
2774 bfd_put_32 (output_bfd, insn, contents + offset);
2775 break;
2776
2777 /* GOT16 relocations */
2778 case (int)R_PPC_GOT16:
2779 case (int)R_PPC_GOT16_LO:
2780 case (int)R_PPC_GOT16_HI:
2781 case (int)R_PPC_GOT16_HA:
2782 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2783 got, h, relocation, rel,
2784 R_PPC_RELATIVE);
2785 break;
2786
2787 /* Indirect .sdata relocation */
2788 case (int)R_PPC_EMB_SDAI16:
2789 BFD_ASSERT (sdata != NULL);
2790 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2791 sdata, h, relocation, rel,
2792 R_PPC_RELATIVE);
2793 break;
2794
2795 /* Indirect .sdata2 relocation */
2796 case (int)R_PPC_EMB_SDA2I16:
2797 BFD_ASSERT (sdata2 != NULL);
2798 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2799 sdata2, h, relocation, rel,
2800 R_PPC_RELATIVE);
2801 break;
2802
2803 /* Handle the TOC16 reloc. We want to use the offset within the .got
2804 section, not the actual VMA. This is appropriate when generating
2805 an embedded ELF object, for which the .got section acts like the
2806 AIX .toc section. */
2807 case (int)R_PPC_TOC16: /* phony GOT16 relocations */
2808 BFD_ASSERT (sec != (asection *)0);
2809 BFD_ASSERT (bfd_is_und_section (sec)
2810 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
2811 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
2812
2813 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
2814 break;
2815
2816 /* arithmetic adjust relocations */
2817 case (int)R_PPC_ADDR16_HA:
2818 BFD_ASSERT (sec != (asection *)0);
2819 addend += ((relocation + addend) & 0x8000) << 1;
2820 break;
2821
2822 /* relocate against _SDA_BASE_ */
2823 case (int)R_PPC_SDAREL16:
2824 BFD_ASSERT (sec != (asection *)0);
2825 if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0
2826 && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0)
2827 {
2828 (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
2829 bfd_get_filename (input_bfd),
2830 sym_name,
2831 ppc_elf_howto_table[ (int)r_type ]->name,
2832 bfd_get_section_name (abfd, sec));
2833
2834 bfd_set_error (bfd_error_bad_value);
2835 ret = false;
2836 continue;
2837 }
2838 addend -= (sdata->sym_hash->root.u.def.value
2839 + sdata->sym_hash->root.u.def.section->output_section->vma
2840 + sdata->sym_hash->root.u.def.section->output_offset);
2841 break;
2842
2843
2844 /* relocate against _SDA2_BASE_ */
2845 case (int)R_PPC_EMB_SDA2REL:
2846 BFD_ASSERT (sec != (asection *)0);
2847 if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0
2848 && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0)
2849 {
2850 (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
2851 bfd_get_filename (input_bfd),
2852 sym_name,
2853 ppc_elf_howto_table[ (int)r_type ]->name,
2854 bfd_get_section_name (abfd, sec));
2855
2856 bfd_set_error (bfd_error_bad_value);
2857 ret = false;
2858 continue;
2859 }
2860 addend -= (sdata2->sym_hash->root.u.def.value
2861 + sdata2->sym_hash->root.u.def.section->output_section->vma
2862 + sdata2->sym_hash->root.u.def.section->output_offset);
2863 break;
2864
2865
2866 /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
2867 case (int)R_PPC_EMB_SDA21:
2868 case (int)R_PPC_EMB_RELSDA:
2869 {
2870 const char *name = bfd_get_section_name (abfd, sec);
2871 int reg;
2872
2873 BFD_ASSERT (sec != (asection *)0);
2874 if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
2875 {
2876 reg = 13;
2877 addend -= (sdata->sym_hash->root.u.def.value
2878 + sdata->sym_hash->root.u.def.section->output_section->vma
2879 + sdata->sym_hash->root.u.def.section->output_offset);
2880 }
2881
2882 else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0)
2883 {
2884 reg = 2;
2885 addend -= (sdata2->sym_hash->root.u.def.value
2886 + sdata2->sym_hash->root.u.def.section->output_section->vma
2887 + sdata2->sym_hash->root.u.def.section->output_offset);
2888 }
2889
2890 else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0)
2891 {
2892 reg = 0;
2893 }
2894
2895 else
2896 {
2897 (*_bfd_error_handler) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
2898 bfd_get_filename (input_bfd),
2899 sym_name,
2900 ppc_elf_howto_table[ (int)r_type ]->name,
2901 bfd_get_section_name (abfd, sec));
2902
2903 bfd_set_error (bfd_error_bad_value);
2904 ret = false;
2905 continue;
2906 }
2907
2908 if (r_type == R_PPC_EMB_SDA21)
2909 { /* fill in register field */
2910 insn = bfd_get_32 (output_bfd, contents + offset);
2911 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
2912 bfd_put_32 (output_bfd, insn, contents + offset);
2913 }
2914 }
2915 break;
2916
2917 /* Relocate against the beginning of the section */
2918 case (int)R_PPC_SECTOFF:
2919 case (int)R_PPC_SECTOFF_LO:
2920 case (int)R_PPC_SECTOFF_HI:
2921 BFD_ASSERT (sec != (asection *)0);
2922 addend -= sec->output_section->vma;
2923 break;
2924
2925 case (int)R_PPC_SECTOFF_HA:
2926 BFD_ASSERT (sec != (asection *)0);
2927 addend -= sec->output_section->vma;
2928 addend += ((relocation + addend) & 0x8000) << 1;
2929 break;
2930
2931 /* Negative relocations */
2932 case (int)R_PPC_EMB_NADDR32:
2933 case (int)R_PPC_EMB_NADDR16:
2934 case (int)R_PPC_EMB_NADDR16_LO:
2935 case (int)R_PPC_EMB_NADDR16_HI:
2936 addend -= 2*relocation;
2937 break;
2938
2939 case (int)R_PPC_EMB_NADDR16_HA:
2940 addend -= 2*relocation;
2941 addend += ((relocation + addend) & 0x8000) << 1;
2942 break;
2943
2944 /* NOP relocation that prevents garbage collecting linkers from omitting a
2945 reference. */
2946 case (int)R_PPC_EMB_MRKREF:
2947 continue;
2948
2949 case (int)R_PPC_COPY:
2950 case (int)R_PPC_GLOB_DAT:
2951 case (int)R_PPC_JMP_SLOT:
2952 case (int)R_PPC_RELATIVE:
2953 case (int)R_PPC_PLT32:
2954 case (int)R_PPC_PLTREL32:
2955 case (int)R_PPC_PLT16_LO:
2956 case (int)R_PPC_PLT16_HI:
2957 case (int)R_PPC_PLT16_HA:
2958 case (int)R_PPC_EMB_RELSEC16:
2959 case (int)R_PPC_EMB_RELST_LO:
2960 case (int)R_PPC_EMB_RELST_HI:
2961 case (int)R_PPC_EMB_RELST_HA:
2962 case (int)R_PPC_EMB_BIT_FLD:
2963 (*_bfd_error_handler) ("%s: Relocation %s is not yet supported for symbol %s.",
2964 bfd_get_filename (input_bfd),
2965 ppc_elf_howto_table[ (int)r_type ]->name,
2966 sym_name);
2967
2968 bfd_set_error (bfd_error_invalid_operation);
2969 ret = false;
2970 continue;
2971 }
2972
2973
2974 #ifdef DEBUG
2975 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
2976 howto->name,
2977 (int)r_type,
2978 sym_name,
2979 r_symndx,
2980 (long)offset,
2981 (long)addend);
2982 #endif
2983
2984 r = _bfd_final_link_relocate (howto,
2985 input_bfd,
2986 input_section,
2987 contents,
2988 offset,
2989 relocation,
2990 addend);
2991
2992 if (r != bfd_reloc_ok)
2993 {
2994 ret = false;
2995 switch (r)
2996 {
2997 default:
2998 break;
2999
3000 case bfd_reloc_overflow:
3001 {
3002 const char *name;
3003
3004 if (h != NULL)
3005 name = h->root.root.string;
3006 else
3007 {
3008 name = bfd_elf_string_from_elf_section (input_bfd,
3009 symtab_hdr->sh_link,
3010 sym->st_name);
3011 if (name == NULL)
3012 break;
3013
3014 if (*name == '\0')
3015 name = bfd_section_name (input_bfd, sec);
3016 }
3017
3018 (*info->callbacks->reloc_overflow)(info,
3019 name,
3020 howto->name,
3021 (bfd_vma) 0,
3022 input_bfd,
3023 input_section,
3024 offset);
3025 }
3026 break;
3027
3028 }
3029 }
3030 }
3031
3032
3033 #ifdef DEBUG
3034 fprintf (stderr, "\n");
3035 #endif
3036
3037 return ret;
3038 }
3039
3040 \f
3041 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
3042 #define TARGET_LITTLE_NAME "elf32-powerpcle"
3043 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
3044 #define TARGET_BIG_NAME "elf32-powerpc"
3045 #define ELF_ARCH bfd_arch_powerpc
3046 #define ELF_MACHINE_CODE EM_PPC
3047 #define ELF_MAXPAGESIZE 0x10000
3048 #define elf_info_to_howto ppc_elf_info_to_howto
3049
3050 #ifdef EM_CYGNUS_POWERPC
3051 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3052 #endif
3053
3054 #ifdef EM_PPC_OLD
3055 #define ELF_MACHINE_ALT2 EM_PPC_OLD
3056 #endif
3057
3058 #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
3059 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
3060 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
3061 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
3062 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
3063 #define elf_backend_relocate_section ppc_elf_relocate_section
3064 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3065 #define elf_backend_check_relocs ppc_elf_check_relocs
3066 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
3067 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
3068 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
3069 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
3070 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
3071 #define elf_backend_fake_sections ppc_elf_fake_sections
3072 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
3073 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
3074
3075 #include "elf32-target.h"