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Implement R_PPC_EMB_{SDA21,RELSDA} relocations
[binutils-gdb.git] / bfd / elf32-ppc.c
1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996 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 boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
108 static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
109 static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
110
111 static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
112 Elf32_Internal_Shdr *,
113 char *));
114
115 static elf_linker_section_t *ppc_elf_create_linker_section
116 PARAMS ((bfd *abfd,
117 struct bfd_link_info *info,
118 enum elf_linker_section_enum));
119
120 static boolean ppc_elf_check_relocs PARAMS ((bfd *,
121 struct bfd_link_info *,
122 asection *,
123 const Elf_Internal_Rela *));
124
125 static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
126 struct elf_link_hash_entry *));
127
128 static boolean ppc_elf_adjust_dynindx PARAMS ((struct elf_link_hash_entry *, PTR));
129
130 static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
131
132 static boolean ppc_elf_relocate_section PARAMS ((bfd *,
133 struct bfd_link_info *info,
134 bfd *,
135 asection *,
136 bfd_byte *,
137 Elf_Internal_Rela *relocs,
138 Elf_Internal_Sym *local_syms,
139 asection **));
140
141 static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
142 struct bfd_link_info *,
143 struct elf_link_hash_entry *,
144 Elf_Internal_Sym *));
145
146 static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
147
148 #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
149 #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
150 #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
151
152 /* The name of the dynamic interpreter. This is put in the .interp
153 section. */
154
155 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
156
157 \f
158 static reloc_howto_type *ppc_elf_howto_table[ (int)R_PPC_max ];
159
160 static reloc_howto_type ppc_elf_howto_raw[] =
161 {
162 /* This reloc does nothing. */
163 HOWTO (R_PPC_NONE, /* type */
164 0, /* rightshift */
165 2, /* size (0 = byte, 1 = short, 2 = long) */
166 32, /* bitsize */
167 false, /* pc_relative */
168 0, /* bitpos */
169 complain_overflow_bitfield, /* complain_on_overflow */
170 bfd_elf_generic_reloc, /* special_function */
171 "R_PPC_NONE", /* name */
172 false, /* partial_inplace */
173 0, /* src_mask */
174 0, /* dst_mask */
175 false), /* pcrel_offset */
176
177 /* A standard 32 bit relocation. */
178 HOWTO (R_PPC_ADDR32, /* type */
179 0, /* rightshift */
180 2, /* size (0 = byte, 1 = short, 2 = long) */
181 32, /* bitsize */
182 false, /* pc_relative */
183 0, /* bitpos */
184 complain_overflow_bitfield, /* complain_on_overflow */
185 bfd_elf_generic_reloc, /* special_function */
186 "R_PPC_ADDR32", /* name */
187 false, /* partial_inplace */
188 0, /* src_mask */
189 0xffffffff, /* dst_mask */
190 false), /* pcrel_offset */
191
192 /* An absolute 26 bit branch; the lower two bits must be zero.
193 FIXME: we don't check that, we just clear them. */
194 HOWTO (R_PPC_ADDR24, /* type */
195 0, /* rightshift */
196 2, /* size (0 = byte, 1 = short, 2 = long) */
197 26, /* bitsize */
198 false, /* pc_relative */
199 0, /* bitpos */
200 complain_overflow_bitfield, /* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC_ADDR24", /* name */
203 false, /* partial_inplace */
204 0, /* src_mask */
205 0x3fffffc, /* dst_mask */
206 false), /* pcrel_offset */
207
208 /* A standard 16 bit relocation. */
209 HOWTO (R_PPC_ADDR16, /* type */
210 0, /* rightshift */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
212 16, /* bitsize */
213 false, /* pc_relative */
214 0, /* bitpos */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC_ADDR16", /* name */
218 false, /* partial_inplace */
219 0, /* src_mask */
220 0xffff, /* dst_mask */
221 false), /* pcrel_offset */
222
223 /* A 16 bit relocation without overflow. */
224 HOWTO (R_PPC_ADDR16_LO, /* type */
225 0, /* rightshift */
226 1, /* size (0 = byte, 1 = short, 2 = long) */
227 16, /* bitsize */
228 false, /* pc_relative */
229 0, /* bitpos */
230 complain_overflow_dont,/* complain_on_overflow */
231 bfd_elf_generic_reloc, /* special_function */
232 "R_PPC_ADDR16_LO", /* name */
233 false, /* partial_inplace */
234 0, /* src_mask */
235 0xffff, /* dst_mask */
236 false), /* pcrel_offset */
237
238 /* The high order 16 bits of an address. */
239 HOWTO (R_PPC_ADDR16_HI, /* type */
240 16, /* rightshift */
241 1, /* size (0 = byte, 1 = short, 2 = long) */
242 16, /* bitsize */
243 false, /* pc_relative */
244 0, /* bitpos */
245 complain_overflow_dont, /* complain_on_overflow */
246 bfd_elf_generic_reloc, /* special_function */
247 "R_PPC_ADDR16_HI", /* name */
248 false, /* partial_inplace */
249 0, /* src_mask */
250 0xffff, /* dst_mask */
251 false), /* pcrel_offset */
252
253 /* The high order 16 bits of an address, plus 1 if the contents of
254 the low 16 bits, treated as a signed number, is negative. */
255 HOWTO (R_PPC_ADDR16_HA, /* type */
256 16, /* rightshift */
257 1, /* size (0 = byte, 1 = short, 2 = long) */
258 16, /* bitsize */
259 false, /* pc_relative */
260 0, /* bitpos */
261 complain_overflow_dont, /* complain_on_overflow */
262 bfd_elf_generic_reloc, /* special_function */
263 "R_PPC_ADDR16_HA", /* name */
264 false, /* partial_inplace */
265 0, /* src_mask */
266 0xffff, /* dst_mask */
267 false), /* pcrel_offset */
268
269 /* An absolute 16 bit branch; the lower two bits must be zero.
270 FIXME: we don't check that, we just clear them. */
271 HOWTO (R_PPC_ADDR14, /* type */
272 0, /* rightshift */
273 2, /* size (0 = byte, 1 = short, 2 = long) */
274 16, /* bitsize */
275 false, /* pc_relative */
276 0, /* bitpos */
277 complain_overflow_bitfield, /* complain_on_overflow */
278 bfd_elf_generic_reloc, /* special_function */
279 "R_PPC_ADDR14", /* name */
280 false, /* partial_inplace */
281 0, /* src_mask */
282 0xfffc, /* dst_mask */
283 false), /* pcrel_offset */
284
285 /* An absolute 16 bit branch, for which bit 10 should be set to
286 indicate that the branch is expected to be taken. The lower two
287 bits must be zero. */
288 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
289 0, /* rightshift */
290 2, /* size (0 = byte, 1 = short, 2 = long) */
291 16, /* bitsize */
292 false, /* pc_relative */
293 0, /* bitpos */
294 complain_overflow_bitfield, /* complain_on_overflow */
295 bfd_elf_generic_reloc, /* special_function */
296 "R_PPC_ADDR14_BRTAKEN",/* name */
297 false, /* partial_inplace */
298 0, /* src_mask */
299 0xfffc, /* dst_mask */
300 false), /* pcrel_offset */
301
302 /* An absolute 16 bit branch, for which bit 10 should be set to
303 indicate that the branch is not expected to be taken. The lower
304 two bits must be zero. */
305 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
306 0, /* rightshift */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
308 16, /* bitsize */
309 false, /* pc_relative */
310 0, /* bitpos */
311 complain_overflow_bitfield, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC_ADDR14_BRNTAKEN",/* name */
314 false, /* partial_inplace */
315 0, /* src_mask */
316 0xfffc, /* dst_mask */
317 false), /* pcrel_offset */
318
319 /* A relative 26 bit branch; the lower two bits must be zero. */
320 HOWTO (R_PPC_REL24, /* type */
321 0, /* rightshift */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
323 26, /* bitsize */
324 true, /* pc_relative */
325 0, /* bitpos */
326 complain_overflow_signed, /* complain_on_overflow */
327 bfd_elf_generic_reloc, /* special_function */
328 "R_PPC_REL24", /* name */
329 false, /* partial_inplace */
330 0, /* src_mask */
331 0x3fffffc, /* dst_mask */
332 true), /* pcrel_offset */
333
334 /* A relative 16 bit branch; the lower two bits must be zero. */
335 HOWTO (R_PPC_REL14, /* type */
336 0, /* rightshift */
337 2, /* size (0 = byte, 1 = short, 2 = long) */
338 16, /* bitsize */
339 true, /* pc_relative */
340 0, /* bitpos */
341 complain_overflow_signed, /* complain_on_overflow */
342 bfd_elf_generic_reloc, /* special_function */
343 "R_PPC_REL14", /* name */
344 false, /* partial_inplace */
345 0, /* src_mask */
346 0xfffc, /* dst_mask */
347 true), /* pcrel_offset */
348
349 /* A relative 16 bit branch. Bit 10 should be set to indicate that
350 the branch is expected to be taken. The lower two bits must be
351 zero. */
352 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
353 0, /* rightshift */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
355 16, /* bitsize */
356 true, /* pc_relative */
357 0, /* bitpos */
358 complain_overflow_signed, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_PPC_REL14_BRTAKEN", /* name */
361 false, /* partial_inplace */
362 0, /* src_mask */
363 0xfffc, /* dst_mask */
364 true), /* pcrel_offset */
365
366 /* A relative 16 bit branch. Bit 10 should be set to indicate that
367 the branch is not expected to be taken. The lower two bits must
368 be zero. */
369 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
370 0, /* rightshift */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
372 16, /* bitsize */
373 true, /* pc_relative */
374 0, /* bitpos */
375 complain_overflow_signed, /* complain_on_overflow */
376 bfd_elf_generic_reloc, /* special_function */
377 "R_PPC_REL14_BRNTAKEN",/* name */
378 false, /* partial_inplace */
379 0, /* src_mask */
380 0xfffc, /* dst_mask */
381 true), /* pcrel_offset */
382
383 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
384 symbol. */
385 HOWTO (R_PPC_GOT16, /* type */
386 0, /* rightshift */
387 1, /* size (0 = byte, 1 = short, 2 = long) */
388 16, /* bitsize */
389 false, /* pc_relative */
390 0, /* bitpos */
391 complain_overflow_signed, /* complain_on_overflow */
392 bfd_elf_generic_reloc, /* special_function */
393 "R_PPC_GOT16", /* name */
394 false, /* partial_inplace */
395 0, /* src_mask */
396 0xffff, /* dst_mask */
397 false), /* pcrel_offset */
398
399 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
400 the symbol. */
401 HOWTO (R_PPC_GOT16_LO, /* type */
402 0, /* rightshift */
403 1, /* size (0 = byte, 1 = short, 2 = long) */
404 16, /* bitsize */
405 false, /* pc_relative */
406 0, /* bitpos */
407 complain_overflow_bitfield, /* complain_on_overflow */
408 bfd_elf_generic_reloc, /* special_function */
409 "R_PPC_GOT16_LO", /* name */
410 false, /* partial_inplace */
411 0, /* src_mask */
412 0xffff, /* dst_mask */
413 false), /* pcrel_offset */
414
415 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
416 the symbol. */
417 HOWTO (R_PPC_GOT16_HI, /* type */
418 16, /* rightshift */
419 1, /* size (0 = byte, 1 = short, 2 = long) */
420 16, /* bitsize */
421 false, /* pc_relative */
422 0, /* bitpos */
423 complain_overflow_bitfield, /* complain_on_overflow */
424 bfd_elf_generic_reloc, /* special_function */
425 "R_PPC_GOT16_HI", /* name */
426 false, /* partial_inplace */
427 0, /* src_mask */
428 0xffff, /* dst_mask */
429 false), /* pcrel_offset */
430
431 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
432 the symbol. FIXME: Not supported. */
433 HOWTO (R_PPC_GOT16_HA, /* type */
434 0, /* rightshift */
435 1, /* size (0 = byte, 1 = short, 2 = long) */
436 16, /* bitsize */
437 false, /* pc_relative */
438 0, /* bitpos */
439 complain_overflow_bitfield, /* complain_on_overflow */
440 bfd_elf_generic_reloc, /* special_function */
441 "R_PPC_GOT16_HA", /* name */
442 false, /* partial_inplace */
443 0, /* src_mask */
444 0xffff, /* dst_mask */
445 false), /* pcrel_offset */
446
447 /* Like R_PPC_REL24, but referring to the procedure linkage table
448 entry for the symbol. FIXME: Not supported. */
449 HOWTO (R_PPC_PLTREL24, /* type */
450 0, /* rightshift */
451 2, /* size (0 = byte, 1 = short, 2 = long) */
452 26, /* bitsize */
453 true, /* pc_relative */
454 0, /* bitpos */
455 complain_overflow_signed, /* complain_on_overflow */
456 bfd_elf_generic_reloc, /* special_function */
457 "R_PPC_PLTREL24", /* name */
458 false, /* partial_inplace */
459 0, /* src_mask */
460 0x3fffffc, /* dst_mask */
461 true), /* pcrel_offset */
462
463 /* This is used only by the dynamic linker. The symbol should exist
464 both in the object being run and in some shared library. The
465 dynamic linker copies the data addressed by the symbol from the
466 shared library into the object. I have no idea what the purpose
467 of this is. */
468 HOWTO (R_PPC_COPY, /* type */
469 0, /* rightshift */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
471 32, /* bitsize */
472 false, /* pc_relative */
473 0, /* bitpos */
474 complain_overflow_bitfield, /* complain_on_overflow */
475 bfd_elf_generic_reloc, /* special_function */
476 "R_PPC_COPY", /* name */
477 false, /* partial_inplace */
478 0, /* src_mask */
479 0, /* dst_mask */
480 false), /* pcrel_offset */
481
482 /* Like R_PPC_ADDR32, but used when setting global offset table
483 entries. */
484 HOWTO (R_PPC_GLOB_DAT, /* type */
485 0, /* rightshift */
486 2, /* size (0 = byte, 1 = short, 2 = long) */
487 32, /* bitsize */
488 false, /* pc_relative */
489 0, /* bitpos */
490 complain_overflow_bitfield, /* complain_on_overflow */
491 bfd_elf_generic_reloc, /* special_function */
492 "R_PPC_GLOB_DAT", /* name */
493 false, /* partial_inplace */
494 0, /* src_mask */
495 0xffffffff, /* dst_mask */
496 false), /* pcrel_offset */
497
498 /* Marks a procedure linkage table entry for a symbol. */
499 HOWTO (R_PPC_JMP_SLOT, /* type */
500 0, /* rightshift */
501 2, /* size (0 = byte, 1 = short, 2 = long) */
502 32, /* bitsize */
503 false, /* pc_relative */
504 0, /* bitpos */
505 complain_overflow_bitfield, /* complain_on_overflow */
506 bfd_elf_generic_reloc, /* special_function */
507 "R_PPC_JMP_SLOT", /* name */
508 false, /* partial_inplace */
509 0, /* src_mask */
510 0, /* dst_mask */
511 false), /* pcrel_offset */
512
513 /* Used only by the dynamic linker. When the object is run, this
514 longword is set to the load address of the object, plus the
515 addend. */
516 HOWTO (R_PPC_RELATIVE, /* type */
517 0, /* rightshift */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
519 32, /* bitsize */
520 false, /* pc_relative */
521 0, /* bitpos */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_PPC_RELATIVE", /* name */
525 false, /* partial_inplace */
526 0, /* src_mask */
527 0xffffffff, /* dst_mask */
528 false), /* pcrel_offset */
529
530 /* Like R_PPC_REL24, but uses the value of the symbol within the
531 object rather than the final value. Normally used for
532 _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
533 HOWTO (R_PPC_LOCAL24PC, /* type */
534 0, /* rightshift */
535 2, /* size (0 = byte, 1 = short, 2 = long) */
536 26, /* bitsize */
537 true, /* pc_relative */
538 0, /* bitpos */
539 complain_overflow_signed, /* complain_on_overflow */
540 bfd_elf_generic_reloc, /* special_function */
541 "R_PPC_LOCAL24PC", /* name */
542 false, /* partial_inplace */
543 0, /* src_mask */
544 0x3fffffc, /* dst_mask */
545 true), /* pcrel_offset */
546
547 /* Like R_PPC_ADDR32, but may be unaligned. */
548 HOWTO (R_PPC_UADDR32, /* type */
549 0, /* rightshift */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
551 32, /* bitsize */
552 false, /* pc_relative */
553 0, /* bitpos */
554 complain_overflow_bitfield, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_UADDR32", /* name */
557 false, /* partial_inplace */
558 0, /* src_mask */
559 0xffffffff, /* dst_mask */
560 false), /* pcrel_offset */
561
562 /* Like R_PPC_ADDR16, but may be unaligned. */
563 HOWTO (R_PPC_UADDR16, /* type */
564 0, /* rightshift */
565 1, /* size (0 = byte, 1 = short, 2 = long) */
566 16, /* bitsize */
567 false, /* pc_relative */
568 0, /* bitpos */
569 complain_overflow_bitfield, /* complain_on_overflow */
570 bfd_elf_generic_reloc, /* special_function */
571 "R_PPC_UADDR16", /* name */
572 false, /* partial_inplace */
573 0, /* src_mask */
574 0xffff, /* dst_mask */
575 false), /* pcrel_offset */
576
577 /* 32-bit PC relative */
578 HOWTO (R_PPC_REL32, /* type */
579 0, /* rightshift */
580 2, /* size (0 = byte, 1 = short, 2 = long) */
581 32, /* bitsize */
582 true, /* pc_relative */
583 0, /* bitpos */
584 complain_overflow_bitfield, /* complain_on_overflow */
585 bfd_elf_generic_reloc, /* special_function */
586 "R_PPC_REL32", /* name */
587 false, /* partial_inplace */
588 0, /* src_mask */
589 0xffffffff, /* dst_mask */
590 true), /* pcrel_offset */
591
592 /* 32-bit relocation to the symbol's procedure linkage table.
593 FIXEME: not supported. */
594 HOWTO (R_PPC_PLT32, /* type */
595 0, /* rightshift */
596 2, /* size (0 = byte, 1 = short, 2 = long) */
597 32, /* bitsize */
598 false, /* pc_relative */
599 0, /* bitpos */
600 complain_overflow_bitfield, /* complain_on_overflow */
601 bfd_elf_generic_reloc, /* special_function */
602 "R_PPC_PLT32", /* name */
603 false, /* partial_inplace */
604 0, /* src_mask */
605 0, /* dst_mask */
606 false), /* pcrel_offset */
607
608 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
609 FIXEME: not supported. */
610 HOWTO (R_PPC_PLTREL32, /* type */
611 0, /* rightshift */
612 2, /* size (0 = byte, 1 = short, 2 = long) */
613 32, /* bitsize */
614 true, /* pc_relative */
615 0, /* bitpos */
616 complain_overflow_bitfield, /* complain_on_overflow */
617 bfd_elf_generic_reloc, /* special_function */
618 "R_PPC_PLTREL32", /* name */
619 false, /* partial_inplace */
620 0, /* src_mask */
621 0, /* dst_mask */
622 true), /* pcrel_offset */
623
624 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
625 the symbol. */
626 HOWTO (R_PPC_PLT16_LO, /* type */
627 0, /* rightshift */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
629 16, /* bitsize */
630 false, /* pc_relative */
631 0, /* bitpos */
632 complain_overflow_bitfield, /* complain_on_overflow */
633 bfd_elf_generic_reloc, /* special_function */
634 "R_PPC_PLT16_LO", /* name */
635 false, /* partial_inplace */
636 0, /* src_mask */
637 0xffff, /* dst_mask */
638 false), /* pcrel_offset */
639
640 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
641 the symbol. */
642 HOWTO (R_PPC_PLT16_HI, /* type */
643 16, /* rightshift */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
645 16, /* bitsize */
646 false, /* pc_relative */
647 0, /* bitpos */
648 complain_overflow_bitfield, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_PLT16_HI", /* name */
651 false, /* partial_inplace */
652 0, /* src_mask */
653 0xffff, /* dst_mask */
654 false), /* pcrel_offset */
655
656 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
657 the symbol. FIXME: Not supported. */
658 HOWTO (R_PPC_PLT16_HA, /* type */
659 0, /* rightshift */
660 1, /* size (0 = byte, 1 = short, 2 = long) */
661 16, /* bitsize */
662 false, /* pc_relative */
663 0, /* bitpos */
664 complain_overflow_bitfield, /* complain_on_overflow */
665 bfd_elf_generic_reloc, /* special_function */
666 "R_PPC_PLT16_HA", /* name */
667 false, /* partial_inplace */
668 0, /* src_mask */
669 0xffff, /* dst_mask */
670 false), /* pcrel_offset */
671
672 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
673 small data items. FIXME: Not supported. */
674 HOWTO (R_PPC_SDAREL16, /* type */
675 0, /* rightshift */
676 1, /* size (0 = byte, 1 = short, 2 = long) */
677 16, /* bitsize */
678 false, /* pc_relative */
679 0, /* bitpos */
680 complain_overflow_signed, /* complain_on_overflow */
681 bfd_elf_generic_reloc, /* special_function */
682 "R_PPC_SDAREL16", /* name */
683 false, /* partial_inplace */
684 0, /* src_mask */
685 0xffff, /* dst_mask */
686 false), /* pcrel_offset */
687
688 /* 32-bit section relative relocation. FIXME: not supported. */
689 HOWTO (R_PPC_SECTOFF, /* type */
690 0, /* rightshift */
691 2, /* size (0 = byte, 1 = short, 2 = long) */
692 32, /* bitsize */
693 true, /* pc_relative */
694 0, /* bitpos */
695 complain_overflow_bitfield, /* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_PPC_SECTOFF", /* name */
698 false, /* partial_inplace */
699 0, /* src_mask */
700 0, /* dst_mask */
701 true), /* pcrel_offset */
702
703 /* 16-bit lower half section relative relocation. FIXME: not supported. */
704 HOWTO (R_PPC_SECTOFF_LO, /* type */
705 0, /* rightshift */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
707 16, /* bitsize */
708 false, /* pc_relative */
709 0, /* bitpos */
710 complain_overflow_bitfield, /* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_PPC_SECTOFF_LO", /* name */
713 false, /* partial_inplace */
714 0, /* src_mask */
715 0xffff, /* dst_mask */
716 false), /* pcrel_offset */
717
718 /* 16-bit upper half section relative relocation. FIXME: not supported. */
719 HOWTO (R_PPC_SECTOFF_HI, /* type */
720 16, /* rightshift */
721 1, /* size (0 = byte, 1 = short, 2 = long) */
722 16, /* bitsize */
723 false, /* pc_relative */
724 0, /* bitpos */
725 complain_overflow_bitfield, /* complain_on_overflow */
726 bfd_elf_generic_reloc, /* special_function */
727 "R_PPC_SECTOFF_HI", /* name */
728 false, /* partial_inplace */
729 0, /* src_mask */
730 0xffff, /* dst_mask */
731 false), /* pcrel_offset */
732
733 /* 16-bit upper half adjusted section relative relocation. FIXME: not supported. */
734 HOWTO (R_PPC_SECTOFF_HA, /* type */
735 0, /* rightshift */
736 1, /* size (0 = byte, 1 = short, 2 = long) */
737 16, /* bitsize */
738 false, /* pc_relative */
739 0, /* bitpos */
740 complain_overflow_bitfield, /* complain_on_overflow */
741 bfd_elf_generic_reloc, /* special_function */
742 "R_PPC_SECTOFF_HA", /* name */
743 false, /* partial_inplace */
744 0, /* src_mask */
745 0xffff, /* dst_mask */
746 false), /* pcrel_offset */
747
748 /* The remaining relocs are from the Embedded ELF ABI, and are not
749 in the SVR4 ELF ABI. */
750
751 /* 32 bit value resulting from the addend minus the symbol */
752 HOWTO (R_PPC_EMB_NADDR32, /* type */
753 0, /* rightshift */
754 2, /* size (0 = byte, 1 = short, 2 = long) */
755 32, /* bitsize */
756 false, /* pc_relative */
757 0, /* bitpos */
758 complain_overflow_bitfield, /* complain_on_overflow */
759 bfd_elf_generic_reloc, /* special_function */
760 "R_PPC_EMB_NADDR32", /* name */
761 false, /* partial_inplace */
762 0, /* src_mask */
763 0xffffffff, /* dst_mask */
764 false), /* pcrel_offset */
765
766 /* 16 bit value resulting from the addend minus the symbol */
767 HOWTO (R_PPC_EMB_NADDR16, /* type */
768 0, /* rightshift */
769 1, /* size (0 = byte, 1 = short, 2 = long) */
770 16, /* bitsize */
771 false, /* pc_relative */
772 0, /* bitpos */
773 complain_overflow_bitfield, /* complain_on_overflow */
774 bfd_elf_generic_reloc, /* special_function */
775 "R_PPC_EMB_NADDR16", /* name */
776 false, /* partial_inplace */
777 0, /* src_mask */
778 0xffff, /* dst_mask */
779 false), /* pcrel_offset */
780
781 /* 16 bit value resulting from the addend minus the symbol */
782 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
783 0, /* rightshift */
784 1, /* size (0 = byte, 1 = short, 2 = long) */
785 16, /* bitsize */
786 false, /* pc_relative */
787 0, /* bitpos */
788 complain_overflow_dont,/* complain_on_overflow */
789 bfd_elf_generic_reloc, /* special_function */
790 "R_PPC_EMB_ADDR16_LO", /* name */
791 false, /* partial_inplace */
792 0, /* src_mask */
793 0xffff, /* dst_mask */
794 false), /* pcrel_offset */
795
796 /* The high order 16 bits of the addend minus the symbol */
797 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
798 16, /* rightshift */
799 1, /* size (0 = byte, 1 = short, 2 = long) */
800 16, /* bitsize */
801 false, /* pc_relative */
802 0, /* bitpos */
803 complain_overflow_dont, /* complain_on_overflow */
804 bfd_elf_generic_reloc, /* special_function */
805 "R_PPC_EMB_NADDR16_HI", /* name */
806 false, /* partial_inplace */
807 0, /* src_mask */
808 0xffff, /* dst_mask */
809 false), /* pcrel_offset */
810
811 /* The high order 16 bits of the result of the addend minus the address,
812 plus 1 if the contents of the low 16 bits, treated as a signed number,
813 is negative. */
814 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
815 16, /* rightshift */
816 1, /* size (0 = byte, 1 = short, 2 = long) */
817 16, /* bitsize */
818 false, /* pc_relative */
819 0, /* bitpos */
820 complain_overflow_dont, /* complain_on_overflow */
821 bfd_elf_generic_reloc, /* special_function */
822 "R_PPC_EMB_NADDR16_HA", /* name */
823 false, /* partial_inplace */
824 0, /* src_mask */
825 0xffff, /* dst_mask */
826 false), /* pcrel_offset */
827
828 /* 16 bit value resulting from allocating a 4 byte word to hold an
829 address in the .sdata section, and returning the offset from
830 _SDA_BASE_ for that relocation */
831 HOWTO (R_PPC_EMB_SDAI16, /* type */
832 0, /* rightshift */
833 1, /* size (0 = byte, 1 = short, 2 = long) */
834 16, /* bitsize */
835 false, /* pc_relative */
836 0, /* bitpos */
837 complain_overflow_bitfield, /* complain_on_overflow */
838 bfd_elf_generic_reloc, /* special_function */
839 "R_PPC_EMB_SDAI16", /* name */
840 false, /* partial_inplace */
841 0, /* src_mask */
842 0xffff, /* dst_mask */
843 false), /* pcrel_offset */
844
845 /* 16 bit value resulting from allocating a 4 byte word to hold an
846 address in the .sdata2 section, and returning the offset from
847 _SDA2_BASE_ for that relocation */
848 HOWTO (R_PPC_EMB_SDA2I16, /* type */
849 0, /* rightshift */
850 1, /* size (0 = byte, 1 = short, 2 = long) */
851 16, /* bitsize */
852 false, /* pc_relative */
853 0, /* bitpos */
854 complain_overflow_bitfield, /* complain_on_overflow */
855 bfd_elf_generic_reloc, /* special_function */
856 "R_PPC_EMB_SDA2I16", /* name */
857 false, /* partial_inplace */
858 0, /* src_mask */
859 0xffff, /* dst_mask */
860 false), /* pcrel_offset */
861
862 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
863 small data items. FIXME: Not supported. */
864 HOWTO (R_PPC_EMB_SDA2REL, /* type */
865 0, /* rightshift */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
867 16, /* bitsize */
868 false, /* pc_relative */
869 0, /* bitpos */
870 complain_overflow_signed, /* complain_on_overflow */
871 bfd_elf_generic_reloc, /* special_function */
872 "R_PPC_EMB_SDA2REL", /* name */
873 false, /* partial_inplace */
874 0, /* src_mask */
875 0xffff, /* dst_mask */
876 false), /* pcrel_offset */
877
878 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
879 signed offset from the appropriate base, and filling in the register
880 field with the appropriate register (0, 2, or 13). */
881 HOWTO (R_PPC_EMB_SDA21, /* type */
882 0, /* rightshift */
883 1, /* size (0 = byte, 1 = short, 2 = long) */
884 16, /* bitsize */
885 false, /* pc_relative */
886 0, /* bitpos */
887 complain_overflow_signed, /* complain_on_overflow */
888 bfd_elf_generic_reloc, /* special_function */
889 "R_PPC_EMB_SDA21", /* name */
890 false, /* partial_inplace */
891 0, /* src_mask */
892 0xffff, /* dst_mask */
893 false), /* pcrel_offset */
894
895 /* Relocation not handled: R_PPC_EMB_MRKREF */
896 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
897 /* Relocation not handled: R_PPC_EMB_RELST_LO */
898 /* Relocation not handled: R_PPC_EMB_RELST_HI */
899 /* Relocation not handled: R_PPC_EMB_RELST_HA */
900 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
901
902 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
903 in the 16 bit signed offset from the appropriate base, and filling in the
904 register field with the appropriate register (0, 2, or 13). */
905 HOWTO (R_PPC_EMB_RELSDA, /* type */
906 0, /* rightshift */
907 1, /* size (0 = byte, 1 = short, 2 = long) */
908 16, /* bitsize */
909 true, /* pc_relative */
910 0, /* bitpos */
911 complain_overflow_signed, /* complain_on_overflow */
912 bfd_elf_generic_reloc, /* special_function */
913 "R_PPC_EMB_RELSDA", /* name */
914 false, /* partial_inplace */
915 0, /* src_mask */
916 0xffff, /* dst_mask */
917 false), /* pcrel_offset */
918
919 /* Phony reloc to handle AIX style TOC entries */
920 HOWTO (R_PPC_TOC16, /* type */
921 0, /* rightshift */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
923 16, /* bitsize */
924 false, /* pc_relative */
925 0, /* bitpos */
926 complain_overflow_signed, /* complain_on_overflow */
927 bfd_elf_generic_reloc, /* special_function */
928 "R_PPC_TOC16", /* name */
929 false, /* partial_inplace */
930 0, /* src_mask */
931 0xffff, /* dst_mask */
932 false), /* pcrel_offset */
933 };
934
935 \f
936 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
937
938 static void
939 ppc_elf_howto_init ()
940 {
941 unsigned int i, type;
942
943 for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
944 {
945 type = ppc_elf_howto_raw[i].type;
946 BFD_ASSERT (type < sizeof(ppc_elf_howto_table) / sizeof(ppc_elf_howto_table[0]));
947 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
948 }
949 }
950
951 \f
952 static reloc_howto_type *
953 ppc_elf_reloc_type_lookup (abfd, code)
954 bfd *abfd;
955 bfd_reloc_code_real_type code;
956 {
957 enum ppc_reloc_type ppc_reloc = R_PPC_NONE;
958
959 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
960 ppc_elf_howto_init ();
961
962 switch ((int)code)
963 {
964 default:
965 return (reloc_howto_type *)NULL;
966
967 case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
968 case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
969 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
970 case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
971 case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
972 case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
973 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
974 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
975 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
976 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
977 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
978 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
979 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
980 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
981 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
982 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
983 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
984 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
985 case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
986 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
987 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
988 case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
989 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
990 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
991 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
992 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
993 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
994 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
995 case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
996 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
997 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
998 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
999 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
1000 case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
1001 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
1002 case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
1003 case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
1004 case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
1005 case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
1006 case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
1007 case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
1008 case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
1009 case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
1010 case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
1011 case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
1012 case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
1013 case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
1014 case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
1015 case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
1016 case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
1017 case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
1018 }
1019
1020 return ppc_elf_howto_table[ (int)ppc_reloc ];
1021 };
1022
1023 /* Set the howto pointer for a PowerPC ELF reloc. */
1024
1025 static void
1026 ppc_elf_info_to_howto (abfd, cache_ptr, dst)
1027 bfd *abfd;
1028 arelent *cache_ptr;
1029 Elf32_Internal_Rela *dst;
1030 {
1031 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
1032 ppc_elf_howto_init ();
1033
1034 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1035 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1036 }
1037
1038 /* Function to set whether a module needs the -mrelocatable bit set. */
1039
1040 static boolean
1041 ppc_elf_set_private_flags (abfd, flags)
1042 bfd *abfd;
1043 flagword flags;
1044 {
1045 BFD_ASSERT (!elf_flags_init (abfd)
1046 || elf_elfheader (abfd)->e_flags == flags);
1047
1048 elf_elfheader (abfd)->e_flags = flags;
1049 elf_flags_init (abfd) = true;
1050 return true;
1051 }
1052
1053 /* Copy backend specific data from one object module to another */
1054 static boolean
1055 ppc_elf_copy_private_bfd_data (ibfd, obfd)
1056 bfd *ibfd;
1057 bfd *obfd;
1058 {
1059 /* This function is selected based on the input vector. We only
1060 want to copy information over if the output BFD also uses Elf
1061 format. */
1062 if (bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1063 return true;
1064
1065 BFD_ASSERT (!elf_flags_init (obfd)
1066 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
1067
1068 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1069 elf_flags_init (obfd) = true;
1070 return true;
1071 }
1072
1073 /* Merge backend specific data from an object file to the output
1074 object file when linking */
1075 static boolean
1076 ppc_elf_merge_private_bfd_data (ibfd, obfd)
1077 bfd *ibfd;
1078 bfd *obfd;
1079 {
1080 flagword old_flags;
1081 flagword new_flags;
1082 boolean error;
1083
1084 /* Check if we have the same endianess */
1085 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1086 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1087 {
1088 (*_bfd_error_handler)
1089 ("%s: compiled for a %s endian system and target is %s endian",
1090 bfd_get_filename (ibfd),
1091 bfd_big_endian (ibfd) ? "big" : "little",
1092 bfd_big_endian (obfd) ? "big" : "little");
1093
1094 bfd_set_error (bfd_error_wrong_format);
1095 return false;
1096 }
1097
1098 /* This function is selected based on the input vector. We only
1099 want to copy information over if the output BFD also uses Elf
1100 format. */
1101 if (bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1102 return true;
1103
1104 new_flags = elf_elfheader (ibfd)->e_flags;
1105 old_flags = elf_elfheader (obfd)->e_flags;
1106 if (!elf_flags_init (obfd)) /* First call, no flags set */
1107 {
1108 elf_flags_init (obfd) = true;
1109 elf_elfheader (obfd)->e_flags = new_flags;
1110 }
1111
1112 else if (new_flags == old_flags) /* Compatible flags are ok */
1113 ;
1114
1115 else /* Incompatible flags */
1116 {
1117 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
1118 with either. */
1119 error = false;
1120 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1121 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1122 {
1123 error = true;
1124 (*_bfd_error_handler)
1125 ("%s: compiled with -mrelocatable and linked with modules compiled normally",
1126 bfd_get_filename (ibfd));
1127 }
1128 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1129 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1130 {
1131 error = true;
1132 (*_bfd_error_handler)
1133 ("%s: compiled normally and linked with modules compiled with -mrelocatable",
1134 bfd_get_filename (ibfd));
1135 }
1136 else if ((new_flags & EF_PPC_RELOCATABLE_LIB) != 0)
1137 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE_LIB;
1138
1139
1140 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
1141 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1142
1143 new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1144 old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1145
1146 /* Warn about any other mismatches */
1147 if (new_flags != old_flags)
1148 {
1149 error = true;
1150 (*_bfd_error_handler)
1151 ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
1152 bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
1153 }
1154
1155 if (error)
1156 {
1157 bfd_set_error (bfd_error_bad_value);
1158 return false;
1159 }
1160 }
1161
1162 return true;
1163 }
1164
1165 \f
1166 /* Handle a PowerPC specific section when reading an object file. This
1167 is called when elfcode.h finds a section with an unknown type. */
1168
1169 static boolean
1170 ppc_elf_section_from_shdr (abfd, hdr, name)
1171 bfd *abfd;
1172 Elf32_Internal_Shdr *hdr;
1173 char *name;
1174 {
1175 asection *newsect;
1176 flagword flags;
1177
1178 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1179 return false;
1180
1181 newsect = hdr->bfd_section;
1182 flags = bfd_get_section_flags (abfd, newsect);
1183 if (hdr->sh_flags & SHF_EXCLUDE)
1184 flags |= SEC_EXCLUDE;
1185
1186 if (hdr->sh_type == SHT_ORDERED)
1187 flags |= SEC_SORT_ENTRIES;
1188
1189 bfd_set_section_flags (abfd, newsect, flags);
1190 return true;
1191 }
1192
1193 \f
1194 /* Set up any other section flags and such that may be necessary. */
1195
1196 boolean
1197 ppc_elf_fake_sections (abfd, shdr, asect)
1198 bfd *abfd;
1199 Elf32_Internal_Shdr *shdr;
1200 asection *asect;
1201 {
1202 if ((asect->flags & SEC_EXCLUDE) != 0)
1203 shdr->sh_flags |= SHF_EXCLUDE;
1204
1205 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1206 shdr->sh_type = SHT_ORDERED;
1207 }
1208
1209 \f
1210 /* Create a special linker section */
1211 static elf_linker_section_t *
1212 ppc_elf_create_linker_section (abfd, info, which)
1213 bfd *abfd;
1214 struct bfd_link_info *info;
1215 enum elf_linker_section_enum which;
1216 {
1217 bfd *dynobj = elf_hash_table (info)->dynobj;
1218 elf_linker_section_t *lsect;
1219
1220 /* Record the first bfd section that needs the special section */
1221 if (!dynobj)
1222 dynobj = elf_hash_table (info)->dynobj = abfd;
1223
1224 /* If this is the first time, create the section */
1225 lsect = elf_linker_section (dynobj, which);
1226 if (!lsect)
1227 {
1228 elf_linker_section_t defaults;
1229 static elf_linker_section_t zero_section;
1230
1231 defaults = zero_section;
1232 defaults.which = which;
1233 defaults.hole_written_p = false;
1234 defaults.alignment = 2;
1235 defaults.flags = SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY;
1236
1237 switch (which)
1238 {
1239 default:
1240 (*_bfd_error_handler) ("%s: Unknown special linker type %d",
1241 bfd_get_filename (abfd),
1242 (int)which);
1243
1244 bfd_set_error (bfd_error_bad_value);
1245 return (elf_linker_section_t *)0;
1246
1247 case LINKER_SECTION_GOT: /* .got section */
1248 defaults.name = ".got";
1249 defaults.rel_name = ".rela.got";
1250 defaults.sym_name = "_GLOBAL_OFFSET_TABLE_";
1251 defaults.max_hole_offset = 32764;
1252 defaults.hole_size = 16;
1253 defaults.sym_offset = 4;
1254 break;
1255
1256 case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
1257 defaults.name = ".sdata";
1258 defaults.rel_name = ".rela.sdata";
1259 defaults.bss_name = ".sbss";
1260 defaults.sym_name = "_SDA_BASE_";
1261 defaults.sym_offset = 32768;
1262 break;
1263
1264 case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
1265 defaults.name = ".sdata2";
1266 defaults.rel_name = ".rela.sdata2";
1267 defaults.bss_name = ".sbss2";
1268 defaults.sym_name = "_SDA2_BASE_";
1269 defaults.sym_offset = 32768;
1270 break;
1271 }
1272
1273 lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
1274 }
1275
1276 return lsect;
1277 }
1278
1279 \f
1280 /* Adjust a symbol defined by a dynamic object and referenced by a
1281 regular object. The current definition is in some section of the
1282 dynamic object, but we're not including those sections. We have to
1283 change the definition to something the rest of the link can
1284 understand. */
1285
1286 static boolean
1287 ppc_elf_adjust_dynamic_symbol (info, h)
1288 struct bfd_link_info *info;
1289 struct elf_link_hash_entry *h;
1290 {
1291 #ifdef DEBUG
1292 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called\n");
1293 #endif
1294 return true;
1295 }
1296
1297 \f
1298 /* Increment the index of a dynamic symbol by a given amount. Called
1299 via elf_link_hash_traverse. */
1300
1301 static boolean
1302 ppc_elf_adjust_dynindx (h, cparg)
1303 struct elf_link_hash_entry *h;
1304 PTR cparg;
1305 {
1306 int *cp = (int *) cparg;
1307
1308 #ifdef DEBUG
1309 fprintf (stderr, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h->dynindx, *cp);
1310 #endif
1311
1312 if (h->dynindx != -1)
1313 h->dynindx += *cp;
1314
1315 return true;
1316 }
1317
1318 \f
1319 /* Set the sizes of the dynamic sections. */
1320
1321 static boolean
1322 ppc_elf_size_dynamic_sections (output_bfd, info)
1323 bfd *output_bfd;
1324 struct bfd_link_info *info;
1325 {
1326 bfd *dynobj;
1327 asection *s;
1328 boolean reltext;
1329 boolean relplt;
1330
1331 #ifdef DEBUG
1332 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
1333 #endif
1334
1335 dynobj = elf_hash_table (info)->dynobj;
1336 BFD_ASSERT (dynobj != NULL);
1337
1338 if (elf_hash_table (info)->dynamic_sections_created)
1339 {
1340 /* Set the contents of the .interp section to the interpreter. */
1341 if (! info->shared)
1342 {
1343 s = bfd_get_section_by_name (dynobj, ".interp");
1344 BFD_ASSERT (s != NULL);
1345 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1346 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1347 }
1348
1349 /* Make space for the trailing nop in .plt. */
1350 s = bfd_get_section_by_name (dynobj, ".plt");
1351 BFD_ASSERT (s != NULL);
1352 if (s->_raw_size > 0)
1353 s->_raw_size += 4;
1354 }
1355 else
1356 {
1357 /* We may have created entries in the .rela.got, .rela.sdata, and
1358 .rela.sdata2 section2. However, if we are not creating the
1359 dynamic sections, we will not actually use these entries. Reset
1360 the size of .rela.got, et al, which will cause it to get
1361 stripped from the output file below. */
1362 static char *rela_sections[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 };
1363 char **p;
1364
1365 for (p = rela_sections; *p != (char *)0; p++)
1366 {
1367 s = bfd_get_section_by_name (dynobj, *p);
1368 if (s != NULL)
1369 s->_raw_size = 0;
1370 }
1371 }
1372
1373 /* The check_relocs and adjust_dynamic_symbol entry points have
1374 determined the sizes of the various dynamic sections. Allocate
1375 memory for them. */
1376 reltext = false;
1377 relplt = false;
1378 for (s = dynobj->sections; s != NULL; s = s->next)
1379 {
1380 const char *name;
1381 boolean strip;
1382
1383 if ((s->flags & SEC_IN_MEMORY) == 0)
1384 continue;
1385
1386 /* It's OK to base decisions on the section name, because none
1387 of the dynobj section names depend upon the input files. */
1388 name = bfd_get_section_name (dynobj, s);
1389
1390 strip = false;
1391
1392 #if 0
1393 if (strncmp (name, ".rela", 5) == 0)
1394 {
1395 if (s->_raw_size == 0)
1396 {
1397 /* If we don't need this section, strip it from the
1398 output file. This is to handle .rela.bss and
1399 .rel.plt. We must create it in
1400 create_dynamic_sections, because it must be created
1401 before the linker maps input sections to output
1402 sections. The linker does that before
1403 adjust_dynamic_symbol is called, and it is that
1404 function which decides whether anything needs to go
1405 into these sections. */
1406 strip = true;
1407 }
1408 else
1409 {
1410 asection *target;
1411
1412 /* If this relocation section applies to a read only
1413 section, then we probably need a DT_TEXTREL entry. */
1414 target = bfd_get_section_by_name (output_bfd, name + 5);
1415 if (target != NULL
1416 && (target->flags & SEC_READONLY) != 0)
1417 reltext = true;
1418
1419 if (strcmp (name, ".rela.plt") == 0)
1420 relplt = true;
1421
1422 /* We use the reloc_count field as a counter if we need
1423 to copy relocs into the output file. */
1424 s->reloc_count = 0;
1425 }
1426 }
1427 else
1428 #endif
1429 if (strcmp (name, ".plt") != 0
1430 && strcmp (name, ".got") != 0
1431 && strcmp (name, ".sdata") != 0
1432 && strcmp (name, ".sdata2") != 0)
1433 {
1434 /* It's not one of our sections, so don't allocate space. */
1435 continue;
1436 }
1437
1438 if (strip)
1439 {
1440 asection **spp;
1441
1442 for (spp = &s->output_section->owner->sections;
1443 *spp != s->output_section;
1444 spp = &(*spp)->next)
1445 ;
1446 *spp = s->output_section->next;
1447 --s->output_section->owner->section_count;
1448
1449 continue;
1450 }
1451
1452 /* Allocate memory for the section contents. */
1453 s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
1454 if (s->contents == NULL && s->_raw_size != 0)
1455 return false;
1456 }
1457
1458 if (elf_hash_table (info)->dynamic_sections_created)
1459 {
1460 /* Add some entries to the .dynamic section. We fill in the
1461 values later, in ppc_elf_finish_dynamic_sections, but we
1462 must add the entries now so that we get the correct size for
1463 the .dynamic section. The DT_DEBUG entry is filled in by the
1464 dynamic linker and used by the debugger. */
1465 if (! info->shared)
1466 {
1467 if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
1468 return false;
1469 }
1470
1471 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
1472 return false;
1473
1474 if (relplt)
1475 {
1476 if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
1477 || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
1478 || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
1479 return false;
1480 }
1481
1482 if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
1483 || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
1484 || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
1485 sizeof (Elf32_External_Rela)))
1486 return false;
1487
1488 if (reltext)
1489 {
1490 if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
1491 return false;
1492 }
1493 }
1494
1495 /* If we are generating a shared library, we generate a section
1496 symbol for each output section. These are local symbols, which
1497 means that they must come first in the dynamic symbol table.
1498 That means we must increment the dynamic symbol index of every
1499 other dynamic symbol. */
1500 if (info->shared)
1501 {
1502 int c, i;
1503
1504 c = bfd_count_sections (output_bfd);
1505 elf_link_hash_traverse (elf_hash_table (info),
1506 ppc_elf_adjust_dynindx,
1507 (PTR) &c);
1508 elf_hash_table (info)->dynsymcount += c;
1509
1510 for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
1511 {
1512 elf_section_data (s)->dynindx = i;
1513 /* These symbols will have no names, so we don't need to
1514 fiddle with dynstr_index. */
1515 }
1516 }
1517
1518 return true;
1519 }
1520
1521 \f
1522 /* Look through the relocs for a section during the first phase, and
1523 allocate space in the global offset table or procedure linkage
1524 table. */
1525
1526 static boolean
1527 ppc_elf_check_relocs (abfd, info, sec, relocs)
1528 bfd *abfd;
1529 struct bfd_link_info *info;
1530 asection *sec;
1531 const Elf_Internal_Rela *relocs;
1532 {
1533 bfd *dynobj;
1534 Elf_Internal_Shdr *symtab_hdr;
1535 struct elf_link_hash_entry **sym_hashes;
1536 const Elf_Internal_Rela *rel;
1537 const Elf_Internal_Rela *rel_end;
1538 elf_linker_section_t *got;
1539 elf_linker_section_t *sdata;
1540 elf_linker_section_t *sdata2;
1541 asection *sreloc;
1542
1543 if (info->relocateable)
1544 return true;
1545
1546 #ifdef DEBUG
1547 fprintf (stderr, "ppc_elf_check_relocs called for section %s\n",
1548 bfd_get_section_name (abfd, sec));
1549 #endif
1550
1551 /* Create the linker generated sections all the time so that the special
1552 symbols are created. */
1553 if ((got = elf_linker_section (abfd, LINKER_SECTION_GOT)) == NULL)
1554 {
1555 got = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_GOT);
1556 if (!got)
1557 return false;
1558 }
1559
1560 if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
1561 {
1562 sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
1563 if (!sdata)
1564 return false;
1565 }
1566
1567
1568 if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
1569 {
1570 sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
1571 if (!sdata2)
1572 return false;
1573 }
1574
1575 dynobj = elf_hash_table (info)->dynobj;
1576 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
1577 sym_hashes = elf_sym_hashes (abfd);
1578
1579 sreloc = NULL;
1580
1581 rel_end = relocs + sec->reloc_count;
1582 for (rel = relocs; rel < rel_end; rel++)
1583 {
1584 unsigned long r_symndx;
1585 struct elf_link_hash_entry *h;
1586
1587 r_symndx = ELF32_R_SYM (rel->r_info);
1588 if (r_symndx < symtab_hdr->sh_info)
1589 h = NULL;
1590 else
1591 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
1592
1593 switch (ELF32_R_TYPE (rel->r_info))
1594 {
1595 default:
1596 break;
1597
1598 /* GOT16 relocations */
1599 case R_PPC_GOT16:
1600 case R_PPC_GOT16_LO:
1601 case R_PPC_GOT16_HI:
1602 case R_PPC_GOT16_HA:
1603 if (got->rel_section == NULL
1604 && (h != NULL || info->shared)
1605 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1606 return false;
1607
1608 if (!bfd_elf32_create_pointer_linker_section (abfd, info, got, h, rel))
1609 return false;
1610
1611 break;
1612
1613 /* Indirect .sdata relocation */
1614 case R_PPC_EMB_SDAI16:
1615 if (got->rel_section == NULL
1616 && (h != NULL || info->shared)
1617 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1618 return false;
1619
1620 BFD_ASSERT (!info->shared);
1621 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
1622 return false;
1623
1624 break;
1625
1626 /* Indirect .sdata2 relocation */
1627 case R_PPC_EMB_SDA2I16:
1628 if (got->rel_section == NULL
1629 && (h != NULL || info->shared)
1630 && !_bfd_elf_make_linker_section_rela (dynobj, got, 2))
1631 return false;
1632
1633 BFD_ASSERT (!info->shared);
1634 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
1635 return false;
1636
1637 break;
1638
1639 #if 0
1640 case R_PPC_PLT32:
1641 case R_PPC_PLTREL24:
1642 case R_PPC_PLT16_LO:
1643 case R_PPC_PLT16_HI:
1644 case R_PPC_PLT16_HA:
1645 #ifdef DEBUG
1646 fprintf (stderr, "Reloc requires a PLT entry\n");
1647 #endif
1648 /* This symbol requires a procedure linkage table entry. We
1649 actually build the entry in adjust_dynamic_symbol,
1650 because this might be a case of linking PIC code without
1651 linking in any dynamic objects, in which case we don't
1652 need to generate a procedure linkage table after all. */
1653
1654 if (h == NULL)
1655 {
1656 /* It does not make sense to have a procedure linkage
1657 table entry for a local symbol. */
1658 bfd_set_error (bfd_error_bad_value);
1659 return false;
1660 }
1661
1662 /* Make sure this symbol is output as a dynamic symbol. */
1663 if (h->dynindx == -1)
1664 {
1665 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1666 return false;
1667 }
1668
1669 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
1670 break;
1671
1672 case R_SPARC_PC10:
1673 case R_SPARC_PC22:
1674 if (h != NULL
1675 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
1676 break;
1677 /* Fall through. */
1678 case R_SPARC_DISP8:
1679 case R_SPARC_DISP16:
1680 case R_SPARC_DISP32:
1681 case R_SPARC_WDISP30:
1682 case R_SPARC_WDISP22:
1683 if (h == NULL)
1684 break;
1685 /* Fall through. */
1686 case R_SPARC_8:
1687 case R_SPARC_16:
1688 case R_SPARC_32:
1689 case R_SPARC_HI22:
1690 case R_SPARC_22:
1691 case R_SPARC_13:
1692 case R_SPARC_LO10:
1693 case R_SPARC_UA32:
1694 if (info->shared
1695 && (sec->flags & SEC_ALLOC) != 0)
1696 {
1697 /* When creating a shared object, we must copy these
1698 relocs into the output file. We create a reloc
1699 section in dynobj and make room for the reloc. */
1700 if (sreloc == NULL)
1701 {
1702 const char *name;
1703
1704 name = (bfd_elf_string_from_elf_section
1705 (abfd,
1706 elf_elfheader (abfd)->e_shstrndx,
1707 elf_section_data (sec)->rel_hdr.sh_name));
1708 if (name == NULL)
1709 return false;
1710
1711 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
1712 && strcmp (bfd_get_section_name (abfd, sec),
1713 name + 5) == 0);
1714
1715 sreloc = bfd_get_section_by_name (dynobj, name);
1716 if (sreloc == NULL)
1717 {
1718 sreloc = bfd_make_section (dynobj, name);
1719 if (sreloc == NULL
1720 || ! bfd_set_section_flags (dynobj, sreloc,
1721 (SEC_ALLOC
1722 | SEC_LOAD
1723 | SEC_HAS_CONTENTS
1724 | SEC_IN_MEMORY
1725 | SEC_READONLY))
1726 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
1727 return false;
1728 }
1729 }
1730
1731 sreloc->_raw_size += sizeof (Elf32_External_Rela);
1732 }
1733
1734 break;
1735 #endif
1736 }
1737 }
1738
1739 return true;
1740 }
1741
1742 \f
1743 /* Finish up dynamic symbol handling. We set the contents of various
1744 dynamic sections here. */
1745
1746 static boolean
1747 ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
1748 bfd *output_bfd;
1749 struct bfd_link_info *info;
1750 struct elf_link_hash_entry *h;
1751 Elf_Internal_Sym *sym;
1752 {
1753 bfd *dynobj;
1754
1755 #ifdef DEBUG
1756 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s\n", h->root.root.string);
1757 #endif
1758
1759 dynobj = elf_hash_table (info)->dynobj;
1760 BFD_ASSERT (dynobj != NULL);
1761
1762 if (h->plt_offset != (bfd_vma) -1)
1763 {
1764 asection *splt;
1765 asection *srela;
1766 Elf_Internal_Rela rela;
1767
1768 /* This symbol has an entry in the procedure linkage table. Set
1769 it up. */
1770
1771 BFD_ASSERT (h->dynindx != -1);
1772
1773 splt = bfd_get_section_by_name (dynobj, ".plt");
1774 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1775 BFD_ASSERT (splt != NULL && srela != NULL);
1776
1777 /* Fill in the entry in the procedure linkage table. */
1778 #if 0
1779 bfd_put_32 (output_bfd,
1780 PLT_ENTRY_WORD0 + h->plt_offset,
1781 splt->contents + h->plt_offset);
1782 bfd_put_32 (output_bfd,
1783 (PLT_ENTRY_WORD1
1784 + (((- (h->plt_offset + 4)) >> 2) & 0x3fffff)),
1785 splt->contents + h->plt_offset + 4);
1786 bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
1787 splt->contents + h->plt_offset + 8);
1788
1789 /* Fill in the entry in the .rela.plt section. */
1790 rela.r_offset = (splt->output_section->vma
1791 + splt->output_offset
1792 + h->plt_offset);
1793 rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
1794 rela.r_addend = 0;
1795 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1796 ((Elf32_External_Rela *) srela->contents
1797 + h->plt_offset / PLT_ENTRY_SIZE - 4));
1798 #endif
1799
1800 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1801 {
1802 /* Mark the symbol as undefined, rather than as defined in
1803 the .plt section. Leave the value alone. */
1804 sym->st_shndx = SHN_UNDEF;
1805 }
1806 }
1807
1808 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
1809 {
1810 asection *s;
1811 Elf_Internal_Rela rela;
1812
1813 /* This symbols needs a copy reloc. Set it up. */
1814
1815 BFD_ASSERT (h->dynindx != -1);
1816
1817 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1818 ".rela.bss");
1819 BFD_ASSERT (s != NULL);
1820
1821 rela.r_offset = (h->root.u.def.value
1822 + h->root.u.def.section->output_section->vma
1823 + h->root.u.def.section->output_offset);
1824 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
1825 rela.r_addend = 0;
1826 bfd_elf32_swap_reloca_out (output_bfd, &rela,
1827 ((Elf32_External_Rela *) s->contents
1828 + s->reloc_count));
1829 ++s->reloc_count;
1830 }
1831
1832 /* Mark some specially defined symbols as absolute. */
1833 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1834 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
1835 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
1836 sym->st_shndx = SHN_ABS;
1837
1838 return true;
1839 }
1840
1841 \f
1842 /* Finish up the dynamic sections. */
1843
1844 static boolean
1845 ppc_elf_finish_dynamic_sections (output_bfd, info)
1846 bfd *output_bfd;
1847 struct bfd_link_info *info;
1848 {
1849 asection *sdyn;
1850 bfd *dynobj = elf_hash_table (info)->dynobj;
1851 elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT);
1852
1853 #ifdef DEBUG
1854 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
1855 #endif
1856
1857 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1858
1859 if (elf_hash_table (info)->dynamic_sections_created)
1860 {
1861 asection *splt;
1862 Elf32_External_Dyn *dyncon, *dynconend;
1863
1864 splt = bfd_get_section_by_name (dynobj, ".plt");
1865 BFD_ASSERT (splt != NULL && sdyn != NULL);
1866
1867 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1868 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
1869 for (; dyncon < dynconend; dyncon++)
1870 {
1871 Elf_Internal_Dyn dyn;
1872 const char *name;
1873 boolean size;
1874
1875 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1876
1877 switch (dyn.d_tag)
1878 {
1879 case DT_PLTGOT: name = ".plt"; size = false; break;
1880 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
1881 case DT_JMPREL: name = ".rela.plt"; size = false; break;
1882 default: name = NULL; size = false; break;
1883 }
1884
1885 if (name != NULL)
1886 {
1887 asection *s;
1888
1889 s = bfd_get_section_by_name (output_bfd, name);
1890 if (s == NULL)
1891 dyn.d_un.d_val = 0;
1892 else
1893 {
1894 if (! size)
1895 dyn.d_un.d_ptr = s->vma;
1896 else
1897 {
1898 if (s->_cooked_size != 0)
1899 dyn.d_un.d_val = s->_cooked_size;
1900 else
1901 dyn.d_un.d_val = s->_raw_size;
1902 }
1903 }
1904 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1905 }
1906 }
1907 }
1908
1909 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
1910 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
1911 if (got)
1912 {
1913 unsigned char *contents = got->section->contents + got->hole_offset;
1914 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
1915
1916 if (sdyn == NULL)
1917 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
1918 else
1919 bfd_put_32 (output_bfd,
1920 sdyn->output_section->vma + sdyn->output_offset,
1921 contents+4);
1922
1923 elf_section_data (got->section->output_section)->this_hdr.sh_entsize = 4;
1924 }
1925
1926 if (info->shared)
1927 {
1928 asection *sdynsym;
1929 asection *s;
1930 Elf_Internal_Sym sym;
1931
1932 /* Set up the section symbols for the output sections. */
1933
1934 sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
1935 BFD_ASSERT (sdynsym != NULL);
1936
1937 sym.st_size = 0;
1938 sym.st_name = 0;
1939 sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
1940 sym.st_other = 0;
1941
1942 for (s = output_bfd->sections; s != NULL; s = s->next)
1943 {
1944 int indx;
1945
1946 sym.st_value = s->vma;
1947
1948 indx = elf_section_data (s)->this_idx;
1949 BFD_ASSERT (indx > 0);
1950 sym.st_shndx = indx;
1951
1952 bfd_elf32_swap_symbol_out (output_bfd, &sym,
1953 (PTR) (((Elf32_External_Sym *)
1954 sdynsym->contents)
1955 + elf_section_data (s)->dynindx));
1956 }
1957
1958 /* Set the sh_info field of the output .dynsym section to the
1959 index of the first global symbol. */
1960 elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
1961 bfd_count_sections (output_bfd) + 1;
1962 }
1963
1964 return true;
1965 }
1966
1967 \f
1968 /* The RELOCATE_SECTION function is called by the ELF backend linker
1969 to handle the relocations for a section.
1970
1971 The relocs are always passed as Rela structures; if the section
1972 actually uses Rel structures, the r_addend field will always be
1973 zero.
1974
1975 This function is responsible for adjust the section contents as
1976 necessary, and (if using Rela relocs and generating a
1977 relocateable output file) adjusting the reloc addend as
1978 necessary.
1979
1980 This function does not have to worry about setting the reloc
1981 address or the reloc symbol index.
1982
1983 LOCAL_SYMS is a pointer to the swapped in local symbols.
1984
1985 LOCAL_SECTIONS is an array giving the section in the input file
1986 corresponding to the st_shndx field of each local symbol.
1987
1988 The global hash table entry for the global symbols can be found
1989 via elf_sym_hashes (input_bfd).
1990
1991 When generating relocateable output, this function must handle
1992 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
1993 going to be the section symbol corresponding to the output
1994 section, which means that the addend must be adjusted
1995 accordingly. */
1996
1997 static boolean
1998 ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
1999 contents, relocs, local_syms, local_sections)
2000 bfd *output_bfd;
2001 struct bfd_link_info *info;
2002 bfd *input_bfd;
2003 asection *input_section;
2004 bfd_byte *contents;
2005 Elf_Internal_Rela *relocs;
2006 Elf_Internal_Sym *local_syms;
2007 asection **local_sections;
2008 {
2009 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2010 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2011 bfd *dynobj = elf_hash_table (info)->dynobj;
2012 elf_linker_section_t *got = elf_linker_section (dynobj, LINKER_SECTION_GOT);
2013 elf_linker_section_t *sdata = elf_linker_section (dynobj, LINKER_SECTION_SDATA);
2014 elf_linker_section_t *sdata2 = elf_linker_section (dynobj, LINKER_SECTION_SDATA2);
2015 Elf_Internal_Rela *rel = relocs;
2016 Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
2017 boolean ret = true;
2018 long insn;
2019
2020 #ifdef DEBUG
2021 fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
2022 bfd_get_filename (input_bfd),
2023 bfd_section_name(input_bfd, input_section),
2024 (long)input_section->reloc_count,
2025 (info->relocateable) ? " (relocatable)" : "");
2026 #endif
2027
2028 if (!ppc_elf_howto_table[ R_PPC_ADDR32 ]) /* Initialize howto table if needed */
2029 ppc_elf_howto_init ();
2030
2031 for (; rel < relend; rel++)
2032 {
2033 enum ppc_reloc_type r_type = (enum ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
2034 bfd_vma offset = rel->r_offset;
2035 bfd_vma addend = rel->r_addend;
2036 bfd_reloc_status_type r = bfd_reloc_other;
2037 Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0;
2038 asection *sec = (asection *)0;
2039 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0;
2040 reloc_howto_type *howto;
2041 unsigned long r_symndx;
2042 bfd_vma relocation;
2043
2044 /* Unknown relocation handling */
2045 if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type])
2046 {
2047 (*_bfd_error_handler) ("%s: unknown relocation type %d",
2048 bfd_get_filename (input_bfd),
2049 (int)r_type);
2050
2051 bfd_set_error (bfd_error_bad_value);
2052 ret = false;
2053 continue;
2054 }
2055
2056 howto = ppc_elf_howto_table[(int)r_type];
2057 r_symndx = ELF32_R_SYM (rel->r_info);
2058
2059 if (info->relocateable)
2060 {
2061 /* This is a relocateable link. We don't have to change
2062 anything, unless the reloc is against a section symbol,
2063 in which case we have to adjust according to where the
2064 section symbol winds up in the output section. */
2065 if (r_symndx < symtab_hdr->sh_info)
2066 {
2067 sym = local_syms + r_symndx;
2068 if ((unsigned)ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2069 {
2070 sec = local_sections[r_symndx];
2071 addend = rel->r_addend += sec->output_offset + sym->st_value;
2072 }
2073 }
2074
2075 #ifdef DEBUG
2076 fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
2077 howto->name,
2078 (int)r_type,
2079 r_symndx,
2080 (long)offset,
2081 (long)addend);
2082 #endif
2083 continue;
2084 }
2085
2086 /* This is a final link. */
2087 if (r_symndx < symtab_hdr->sh_info)
2088 {
2089 sym = local_syms + r_symndx;
2090 sec = local_sections[r_symndx];
2091 relocation = (sec->output_section->vma
2092 + sec->output_offset
2093 + sym->st_value);
2094 }
2095 else
2096 {
2097 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2098 if (h->root.type == bfd_link_hash_defined
2099 || h->root.type == bfd_link_hash_defweak)
2100 {
2101 sec = h->root.u.def.section;
2102 relocation = (h->root.u.def.value
2103 + sec->output_section->vma
2104 + sec->output_offset);
2105 }
2106 else if (h->root.type == bfd_link_hash_undefweak)
2107 relocation = 0;
2108 else if (info->shared)
2109 relocation = 0;
2110 else
2111 {
2112 (*info->callbacks->undefined_symbol)(info,
2113 h->root.root.string,
2114 input_bfd,
2115 input_section,
2116 rel->r_offset);
2117 ret = false;
2118 continue;
2119 }
2120 }
2121
2122 switch ((int)r_type)
2123 {
2124 default:
2125 (*_bfd_error_handler) ("%s: unknown relocation type %d",
2126 bfd_get_filename (input_bfd),
2127 (int)r_type);
2128
2129 bfd_set_error (bfd_error_bad_value);
2130 ret = false;
2131 continue;
2132
2133 /* relocations that need no special processing */
2134 case (int)R_PPC_NONE:
2135 case (int)R_PPC_ADDR32:
2136 case (int)R_PPC_ADDR24:
2137 case (int)R_PPC_ADDR16:
2138 case (int)R_PPC_ADDR16_LO:
2139 case (int)R_PPC_ADDR16_HI:
2140 case (int)R_PPC_ADDR14:
2141 case (int)R_PPC_REL24:
2142 case (int)R_PPC_REL14:
2143 case (int)R_PPC_UADDR32:
2144 case (int)R_PPC_UADDR16:
2145 case (int)R_PPC_REL32:
2146 break;
2147
2148 /* branch taken prediction relocations */
2149 case (int)R_PPC_ADDR14_BRTAKEN:
2150 case (int)R_PPC_REL14_BRTAKEN:
2151 insn = bfd_get_32 (output_bfd, contents + offset);
2152 if ((relocation - offset) & 0x8000)
2153 insn &= ~BRANCH_PREDICT_BIT;
2154 else
2155 insn |= BRANCH_PREDICT_BIT;
2156 bfd_put_32 (output_bfd, insn, contents + offset);
2157 break;
2158
2159 /* branch not taken predicition relocations */
2160 case (int)R_PPC_ADDR14_BRNTAKEN:
2161 case (int)R_PPC_REL14_BRNTAKEN:
2162 insn = bfd_get_32 (output_bfd, contents + offset);
2163 if ((relocation - offset) & 0x8000)
2164 insn |= BRANCH_PREDICT_BIT;
2165 else
2166 insn &= ~BRANCH_PREDICT_BIT;
2167 bfd_put_32 (output_bfd, insn, contents + offset);
2168 break;
2169
2170 /* GOT16 relocations */
2171 case (int)R_PPC_GOT16:
2172 case (int)R_PPC_GOT16_LO:
2173 case (int)R_PPC_GOT16_HI:
2174 case (int)R_PPC_GOT16_HA:
2175 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2176 got, h, relocation, rel,
2177 R_PPC_RELATIVE);
2178 break;
2179
2180 /* Indirect .sdata relocation */
2181 case (int)R_PPC_EMB_SDAI16:
2182 BFD_ASSERT (sdata != NULL);
2183 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2184 sdata, h, relocation, rel,
2185 R_PPC_RELATIVE);
2186 break;
2187
2188 /* Indirect .sdata2 relocation */
2189 case (int)R_PPC_EMB_SDA2I16:
2190 BFD_ASSERT (sdata2 != NULL);
2191 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
2192 sdata2, h, relocation, rel,
2193 R_PPC_RELATIVE);
2194 break;
2195
2196 /* Handle the TOC16 reloc. We want to use the offset within the .got
2197 section, not the actual VMA. This is appropriate when generating
2198 an embedded ELF object, for which the .got section acts like the
2199 AIX .toc section. */
2200 case (int)R_PPC_TOC16: /* phony GOT16 relocations */
2201 BFD_ASSERT (sec != (asection *)0);
2202 BFD_ASSERT (bfd_is_und_section (sec)
2203 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
2204 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
2205
2206 addend -= sec->output_section->vma + 0x8000;
2207 break;
2208
2209 /* arithmetic adjust relocations */
2210 case (int)R_PPC_ADDR16_HA:
2211 BFD_ASSERT (sec != (asection *)0);
2212 addend += ((relocation + addend) & 0x8000) << 1;
2213 break;
2214
2215 /* relocate against _SDA_BASE_ */
2216 case (int)R_PPC_SDAREL16:
2217 BFD_ASSERT (sec != (asection *)0);
2218 if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0
2219 && strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0)
2220 {
2221 (*_bfd_error_handler) ("%s: The target of a %s relocation is in the wrong section (%s)",
2222 bfd_get_filename (input_bfd),
2223 ppc_elf_howto_table[ (int)r_type ]->name,
2224 bfd_get_section_name (abfd, sec));
2225
2226 bfd_set_error (bfd_error_bad_value);
2227 ret = false;
2228 continue;
2229 }
2230 addend -= sdata->sym_hash->root.u.def.value;
2231 relocation = sdata->sym_hash->root.u.def.section->output_section->vma - relocation;
2232 break;
2233
2234
2235 /* relocate against _SDA2_BASE_ */
2236 case (int)R_PPC_EMB_SDA2REL:
2237 BFD_ASSERT (sec != (asection *)0);
2238 if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0
2239 && strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0)
2240 {
2241 (*_bfd_error_handler) ("%s: The target of a %s relocation is in the wrong section (%s)",
2242 bfd_get_filename (input_bfd),
2243 ppc_elf_howto_table[ (int)r_type ]->name,
2244 bfd_get_section_name (abfd, sec));
2245
2246 bfd_set_error (bfd_error_bad_value);
2247 ret = false;
2248 continue;
2249 }
2250 addend -= sdata2->sym_hash->root.u.def.value;
2251 relocation = sdata2->sym_hash->root.u.def.section->output_section->vma - relocation;
2252 break;
2253
2254
2255 /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
2256 case (int)R_PPC_EMB_SDA21:
2257 case (int)R_PPC_EMB_RELSDA:
2258 {
2259 const char *name = bfd_get_section_name (abfd, sec);
2260 int reg;
2261
2262 BFD_ASSERT (sec != (asection *)0);
2263 if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
2264 {
2265 reg = 13;
2266 addend -= sdata->sym_hash->root.u.def.value;
2267 relocation = sdata->sym_hash->root.u.def.section->output_section->vma - relocation;
2268 }
2269
2270 else if (strcmp (name, ".sdata2") == 0 || strcmp (name, ".sbss2") == 0)
2271 {
2272 reg = 2;
2273 addend -= sdata2->sym_hash->root.u.def.value;
2274 relocation = sdata2->sym_hash->root.u.def.section->output_section->vma - relocation;
2275 }
2276
2277 else if (strcmp (name, ".PPC.EMB.sdata0") == 0 || strcmp (name, ".PPC.EMB.sbss0") == 0)
2278 {
2279 reg = 0;
2280 }
2281
2282 else
2283 {
2284 (*_bfd_error_handler) ("%s: The target of a %s relocation is in the wrong section (%s)",
2285 bfd_get_filename (input_bfd),
2286 ppc_elf_howto_table[ (int)r_type ]->name,
2287 bfd_get_section_name (abfd, sec));
2288
2289 bfd_set_error (bfd_error_bad_value);
2290 ret = false;
2291 continue;
2292 }
2293
2294 if (r_type == R_PPC_EMB_SDA21)
2295 { /* fill in register field */
2296 insn = bfd_get_32 (output_bfd, contents + offset - 2);
2297 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
2298 bfd_put_32 (output_bfd, insn, contents + offset - 2);
2299 }
2300 }
2301 break;
2302
2303 case (int)R_PPC_PLTREL24:
2304 case (int)R_PPC_COPY:
2305 case (int)R_PPC_GLOB_DAT:
2306 case (int)R_PPC_JMP_SLOT:
2307 case (int)R_PPC_RELATIVE:
2308 case (int)R_PPC_LOCAL24PC:
2309 case (int)R_PPC_PLT32:
2310 case (int)R_PPC_PLTREL32:
2311 case (int)R_PPC_PLT16_LO:
2312 case (int)R_PPC_PLT16_HI:
2313 case (int)R_PPC_PLT16_HA:
2314 case (int)R_PPC_SECTOFF:
2315 case (int)R_PPC_SECTOFF_LO:
2316 case (int)R_PPC_SECTOFF_HI:
2317 case (int)R_PPC_SECTOFF_HA:
2318 case (int)R_PPC_EMB_NADDR32:
2319 case (int)R_PPC_EMB_NADDR16:
2320 case (int)R_PPC_EMB_NADDR16_LO:
2321 case (int)R_PPC_EMB_NADDR16_HI:
2322 case (int)R_PPC_EMB_NADDR16_HA:
2323 case (int)R_PPC_EMB_MRKREF:
2324 case (int)R_PPC_EMB_RELSEC16:
2325 case (int)R_PPC_EMB_RELST_LO:
2326 case (int)R_PPC_EMB_RELST_HI:
2327 case (int)R_PPC_EMB_RELST_HA:
2328 case (int)R_PPC_EMB_BIT_FLD:
2329 unsupported:
2330 (*_bfd_error_handler) ("%s: Relocation %s is not yet supported.",
2331 bfd_get_filename (input_bfd),
2332 ppc_elf_howto_table[ (int)r_type ]->name);
2333
2334 bfd_set_error (bfd_error_invalid_operation);
2335 ret = false;
2336 continue;
2337 }
2338
2339
2340 #ifdef DEBUG
2341 fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
2342 howto->name,
2343 (int)r_type,
2344 r_symndx,
2345 (long)offset,
2346 (long)addend);
2347 #endif
2348
2349 r = _bfd_final_link_relocate (howto,
2350 input_bfd,
2351 input_section,
2352 contents,
2353 offset,
2354 relocation,
2355 addend);
2356
2357 if (r != bfd_reloc_ok)
2358 {
2359 ret = false;
2360 switch (r)
2361 {
2362 default:
2363 break;
2364
2365 case bfd_reloc_overflow:
2366 {
2367 const char *name;
2368
2369 if (h != NULL)
2370 name = h->root.root.string;
2371 else
2372 {
2373 name = bfd_elf_string_from_elf_section (input_bfd,
2374 symtab_hdr->sh_link,
2375 sym->st_name);
2376 if (name == NULL)
2377 break;
2378
2379 if (*name == '\0')
2380 name = bfd_section_name (input_bfd, sec);
2381 }
2382
2383 (*info->callbacks->reloc_overflow)(info,
2384 name,
2385 howto->name,
2386 (bfd_vma) 0,
2387 input_bfd,
2388 input_section,
2389 offset);
2390 }
2391 break;
2392
2393 }
2394 }
2395 }
2396
2397
2398 #ifdef DEBUG
2399 fprintf (stderr, "\n");
2400 #endif
2401
2402 return ret;
2403 }
2404
2405 \f
2406 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
2407 #define TARGET_LITTLE_NAME "elf32-powerpcle"
2408 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
2409 #define TARGET_BIG_NAME "elf32-powerpc"
2410 #define ELF_ARCH bfd_arch_powerpc
2411 #define ELF_MACHINE_CODE EM_PPC
2412 #define ELF_MAXPAGESIZE 0x10000
2413 #define elf_info_to_howto ppc_elf_info_to_howto
2414
2415 #ifdef EM_CYGNUS_POWERPC
2416 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
2417 #endif
2418
2419 #ifdef EM_PPC_OLD
2420 #define ELF_MACHINE_ALT2 EM_PPC_OLD
2421 #endif
2422
2423 #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
2424 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
2425 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
2426 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
2427 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
2428 #define elf_backend_relocate_section ppc_elf_relocate_section
2429 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
2430 #define elf_backend_check_relocs ppc_elf_check_relocs
2431 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
2432 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
2433 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
2434 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
2435 #define elf_backend_fake_sections ppc_elf_fake_sections
2436
2437 #include "elf32-target.h"