1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Written by Ian Lance Taylor, Cygnus Support.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* This file is based on a preliminary PowerPC ELF ABI. The
23 information may not match the final PowerPC ELF ABI. It includes
24 suggestions from the in-progress Embedded PowerPC ABI, and that
25 information may also not match. */
34 #define USE_RELA /* we want RELA relocations, not REL */
36 static reloc_howto_type *ppc_elf_reloc_type_lookup
37 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
38 static void ppc_elf_info_to_howto
39 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst));
40 static void ppc_elf_howto_init PARAMS ((void));
41 static int ppc_elf_sort_rela PARAMS ((const PTR, const PTR));
42 static boolean ppc_elf_relax_section
43 PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
44 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
45 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
46 static boolean ppc_elf_set_private_flags PARAMS ((bfd *, flagword));
47 static boolean ppc_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
48 static boolean ppc_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
50 static int ppc_elf_additional_program_headers PARAMS ((bfd *));
51 static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
53 static boolean ppc_elf_create_dynamic_sections
54 PARAMS ((bfd *, struct bfd_link_info *));
56 static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
57 Elf32_Internal_Shdr *,
59 static boolean ppc_elf_fake_sections
60 PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
62 static elf_linker_section_t *ppc_elf_create_linker_section
64 struct bfd_link_info *info,
65 enum elf_linker_section_enum));
67 static boolean ppc_elf_check_relocs PARAMS ((bfd *,
68 struct bfd_link_info *,
70 const Elf_Internal_Rela *));
72 static asection * ppc_elf_gc_mark_hook PARAMS ((bfd *abfd,
73 struct bfd_link_info *info,
74 Elf_Internal_Rela *rel,
75 struct elf_link_hash_entry *h,
76 Elf_Internal_Sym *sym));
78 static boolean ppc_elf_gc_sweep_hook PARAMS ((bfd *abfd,
79 struct bfd_link_info *info,
81 const Elf_Internal_Rela *relocs));
83 static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
84 struct elf_link_hash_entry *));
86 static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
88 static boolean ppc_elf_relocate_section PARAMS ((bfd *,
89 struct bfd_link_info *info,
93 Elf_Internal_Rela *relocs,
94 Elf_Internal_Sym *local_syms,
97 static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *,
98 struct bfd_link_info *,
99 const Elf_Internal_Sym *,
105 static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
106 struct bfd_link_info *,
107 struct elf_link_hash_entry *,
108 Elf_Internal_Sym *));
110 static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
111 static enum elf_reloc_type_class ppc_elf_reloc_type_class PARAMS ((int));
112 static boolean ppc_elf_grok_prstatus
113 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
114 static boolean ppc_elf_grok_psinfo
115 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
117 #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
118 #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
119 #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
121 /* The name of the dynamic interpreter. This is put in the .interp
124 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
126 /* The size in bytes of an entry in the procedure linkage table. */
127 #define PLT_ENTRY_SIZE 12
128 /* The initial size of the plt reserved for the dynamic linker. */
129 #define PLT_INITIAL_ENTRY_SIZE 72
130 /* The size of the gap between entries in the PLT. */
131 #define PLT_SLOT_SIZE 8
132 /* The number of single-slot PLT entries (the rest use two slots). */
133 #define PLT_NUM_SINGLE_ENTRIES 8192
135 /* Will references to this symbol always reference the symbol
137 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
140 || H->dynindx == -1 \
141 || ELF_ST_VISIBILITY (H->other) == STV_INTERNAL \
142 || ELF_ST_VISIBILITY (H->other) == STV_HIDDEN) \
143 && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
145 /* Will _calls_ to this symbol always call the version in this object? */
146 #define SYMBOL_CALLS_LOCAL(INFO, H) \
149 || H->dynindx == -1 \
150 || ELF_ST_VISIBILITY (H->other) != STV_DEFAULT) \
151 && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
153 static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max];
155 static reloc_howto_type ppc_elf_howto_raw[] = {
156 /* This reloc does nothing. */
157 HOWTO (R_PPC_NONE, /* type */
159 2, /* size (0 = byte, 1 = short, 2 = long) */
161 false, /* pc_relative */
163 complain_overflow_bitfield, /* complain_on_overflow */
164 bfd_elf_generic_reloc, /* special_function */
165 "R_PPC_NONE", /* name */
166 false, /* partial_inplace */
169 false), /* pcrel_offset */
171 /* A standard 32 bit relocation. */
172 HOWTO (R_PPC_ADDR32, /* type */
174 2, /* size (0 = byte, 1 = short, 2 = long) */
176 false, /* pc_relative */
178 complain_overflow_bitfield, /* complain_on_overflow */
179 bfd_elf_generic_reloc, /* special_function */
180 "R_PPC_ADDR32", /* name */
181 false, /* partial_inplace */
183 0xffffffff, /* dst_mask */
184 false), /* pcrel_offset */
186 /* An absolute 26 bit branch; the lower two bits must be zero.
187 FIXME: we don't check that, we just clear them. */
188 HOWTO (R_PPC_ADDR24, /* type */
190 2, /* size (0 = byte, 1 = short, 2 = long) */
192 false, /* pc_relative */
194 complain_overflow_bitfield, /* complain_on_overflow */
195 bfd_elf_generic_reloc, /* special_function */
196 "R_PPC_ADDR24", /* name */
197 false, /* partial_inplace */
199 0x3fffffc, /* dst_mask */
200 false), /* pcrel_offset */
202 /* A standard 16 bit relocation. */
203 HOWTO (R_PPC_ADDR16, /* type */
205 1, /* size (0 = byte, 1 = short, 2 = long) */
207 false, /* pc_relative */
209 complain_overflow_bitfield, /* complain_on_overflow */
210 bfd_elf_generic_reloc, /* special_function */
211 "R_PPC_ADDR16", /* name */
212 false, /* partial_inplace */
214 0xffff, /* dst_mask */
215 false), /* pcrel_offset */
217 /* A 16 bit relocation without overflow. */
218 HOWTO (R_PPC_ADDR16_LO, /* type */
220 1, /* size (0 = byte, 1 = short, 2 = long) */
222 false, /* pc_relative */
224 complain_overflow_dont,/* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR16_LO", /* name */
227 false, /* partial_inplace */
229 0xffff, /* dst_mask */
230 false), /* pcrel_offset */
232 /* The high order 16 bits of an address. */
233 HOWTO (R_PPC_ADDR16_HI, /* type */
235 1, /* size (0 = byte, 1 = short, 2 = long) */
237 false, /* pc_relative */
239 complain_overflow_dont, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_ADDR16_HI", /* name */
242 false, /* partial_inplace */
244 0xffff, /* dst_mask */
245 false), /* pcrel_offset */
247 /* The high order 16 bits of an address, plus 1 if the contents of
248 the low 16 bits, treated as a signed number, is negative. */
249 HOWTO (R_PPC_ADDR16_HA, /* type */
251 1, /* size (0 = byte, 1 = short, 2 = long) */
253 false, /* pc_relative */
255 complain_overflow_dont, /* complain_on_overflow */
256 ppc_elf_addr16_ha_reloc, /* special_function */
257 "R_PPC_ADDR16_HA", /* name */
258 false, /* partial_inplace */
260 0xffff, /* dst_mask */
261 false), /* pcrel_offset */
263 /* An absolute 16 bit branch; the lower two bits must be zero.
264 FIXME: we don't check that, we just clear them. */
265 HOWTO (R_PPC_ADDR14, /* type */
267 2, /* size (0 = byte, 1 = short, 2 = long) */
269 false, /* pc_relative */
271 complain_overflow_bitfield, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC_ADDR14", /* name */
274 false, /* partial_inplace */
276 0xfffc, /* dst_mask */
277 false), /* pcrel_offset */
279 /* An absolute 16 bit branch, for which bit 10 should be set to
280 indicate that the branch is expected to be taken. The lower two
281 bits must be zero. */
282 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
284 2, /* size (0 = byte, 1 = short, 2 = long) */
286 false, /* pc_relative */
288 complain_overflow_bitfield, /* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_PPC_ADDR14_BRTAKEN",/* name */
291 false, /* partial_inplace */
293 0xfffc, /* dst_mask */
294 false), /* pcrel_offset */
296 /* An absolute 16 bit branch, for which bit 10 should be set to
297 indicate that the branch is not expected to be taken. The lower
298 two bits must be zero. */
299 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
301 2, /* size (0 = byte, 1 = short, 2 = long) */
303 false, /* pc_relative */
305 complain_overflow_bitfield, /* complain_on_overflow */
306 bfd_elf_generic_reloc, /* special_function */
307 "R_PPC_ADDR14_BRNTAKEN",/* name */
308 false, /* partial_inplace */
310 0xfffc, /* dst_mask */
311 false), /* pcrel_offset */
313 /* A relative 26 bit branch; the lower two bits must be zero. */
314 HOWTO (R_PPC_REL24, /* type */
316 2, /* size (0 = byte, 1 = short, 2 = long) */
318 true, /* pc_relative */
320 complain_overflow_signed, /* complain_on_overflow */
321 bfd_elf_generic_reloc, /* special_function */
322 "R_PPC_REL24", /* name */
323 false, /* partial_inplace */
325 0x3fffffc, /* dst_mask */
326 true), /* pcrel_offset */
328 /* A relative 16 bit branch; the lower two bits must be zero. */
329 HOWTO (R_PPC_REL14, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 true, /* pc_relative */
335 complain_overflow_signed, /* complain_on_overflow */
336 bfd_elf_generic_reloc, /* special_function */
337 "R_PPC_REL14", /* name */
338 false, /* partial_inplace */
340 0xfffc, /* dst_mask */
341 true), /* pcrel_offset */
343 /* A relative 16 bit branch. Bit 10 should be set to indicate that
344 the branch is expected to be taken. The lower two bits must be
346 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 true, /* pc_relative */
352 complain_overflow_signed, /* complain_on_overflow */
353 bfd_elf_generic_reloc, /* special_function */
354 "R_PPC_REL14_BRTAKEN", /* name */
355 false, /* partial_inplace */
357 0xfffc, /* dst_mask */
358 true), /* pcrel_offset */
360 /* A relative 16 bit branch. Bit 10 should be set to indicate that
361 the branch is not expected to be taken. The lower two bits must
363 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 true, /* pc_relative */
369 complain_overflow_signed, /* complain_on_overflow */
370 bfd_elf_generic_reloc, /* special_function */
371 "R_PPC_REL14_BRNTAKEN",/* name */
372 false, /* partial_inplace */
374 0xfffc, /* dst_mask */
375 true), /* pcrel_offset */
377 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
379 HOWTO (R_PPC_GOT16, /* type */
381 1, /* size (0 = byte, 1 = short, 2 = long) */
383 false, /* pc_relative */
385 complain_overflow_signed, /* complain_on_overflow */
386 bfd_elf_generic_reloc, /* special_function */
387 "R_PPC_GOT16", /* name */
388 false, /* partial_inplace */
390 0xffff, /* dst_mask */
391 false), /* pcrel_offset */
393 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
395 HOWTO (R_PPC_GOT16_LO, /* type */
397 1, /* size (0 = byte, 1 = short, 2 = long) */
399 false, /* pc_relative */
401 complain_overflow_dont, /* complain_on_overflow */
402 bfd_elf_generic_reloc, /* special_function */
403 "R_PPC_GOT16_LO", /* name */
404 false, /* partial_inplace */
406 0xffff, /* dst_mask */
407 false), /* pcrel_offset */
409 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
411 HOWTO (R_PPC_GOT16_HI, /* type */
413 1, /* size (0 = byte, 1 = short, 2 = long) */
415 false, /* pc_relative */
417 complain_overflow_bitfield, /* complain_on_overflow */
418 bfd_elf_generic_reloc, /* special_function */
419 "R_PPC_GOT16_HI", /* name */
420 false, /* partial_inplace */
422 0xffff, /* dst_mask */
423 false), /* pcrel_offset */
425 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
427 HOWTO (R_PPC_GOT16_HA, /* type */
429 1, /* size (0 = byte, 1 = short, 2 = long) */
431 false, /* pc_relative */
433 complain_overflow_bitfield, /* complain_on_overflow */
434 ppc_elf_addr16_ha_reloc, /* special_function */
435 "R_PPC_GOT16_HA", /* name */
436 false, /* partial_inplace */
438 0xffff, /* dst_mask */
439 false), /* pcrel_offset */
441 /* Like R_PPC_REL24, but referring to the procedure linkage table
442 entry for the symbol. */
443 HOWTO (R_PPC_PLTREL24, /* type */
445 2, /* size (0 = byte, 1 = short, 2 = long) */
447 true, /* pc_relative */
449 complain_overflow_signed, /* complain_on_overflow */
450 bfd_elf_generic_reloc, /* special_function */
451 "R_PPC_PLTREL24", /* name */
452 false, /* partial_inplace */
454 0x3fffffc, /* dst_mask */
455 true), /* pcrel_offset */
457 /* This is used only by the dynamic linker. The symbol should exist
458 both in the object being run and in some shared library. The
459 dynamic linker copies the data addressed by the symbol from the
460 shared library into the object, because the object being
461 run has to have the data at some particular address. */
462 HOWTO (R_PPC_COPY, /* type */
464 2, /* size (0 = byte, 1 = short, 2 = long) */
466 false, /* pc_relative */
468 complain_overflow_bitfield, /* complain_on_overflow */
469 bfd_elf_generic_reloc, /* special_function */
470 "R_PPC_COPY", /* name */
471 false, /* partial_inplace */
474 false), /* pcrel_offset */
476 /* Like R_PPC_ADDR32, but used when setting global offset table
478 HOWTO (R_PPC_GLOB_DAT, /* type */
480 2, /* size (0 = byte, 1 = short, 2 = long) */
482 false, /* pc_relative */
484 complain_overflow_bitfield, /* complain_on_overflow */
485 bfd_elf_generic_reloc, /* special_function */
486 "R_PPC_GLOB_DAT", /* name */
487 false, /* partial_inplace */
489 0xffffffff, /* dst_mask */
490 false), /* pcrel_offset */
492 /* Marks a procedure linkage table entry for a symbol. */
493 HOWTO (R_PPC_JMP_SLOT, /* type */
495 2, /* size (0 = byte, 1 = short, 2 = long) */
497 false, /* pc_relative */
499 complain_overflow_bitfield, /* complain_on_overflow */
500 bfd_elf_generic_reloc, /* special_function */
501 "R_PPC_JMP_SLOT", /* name */
502 false, /* partial_inplace */
505 false), /* pcrel_offset */
507 /* Used only by the dynamic linker. When the object is run, this
508 longword is set to the load address of the object, plus the
510 HOWTO (R_PPC_RELATIVE, /* type */
512 2, /* size (0 = byte, 1 = short, 2 = long) */
514 false, /* pc_relative */
516 complain_overflow_bitfield, /* complain_on_overflow */
517 bfd_elf_generic_reloc, /* special_function */
518 "R_PPC_RELATIVE", /* name */
519 false, /* partial_inplace */
521 0xffffffff, /* dst_mask */
522 false), /* pcrel_offset */
524 /* Like R_PPC_REL24, but uses the value of the symbol within the
525 object rather than the final value. Normally used for
526 _GLOBAL_OFFSET_TABLE_. */
527 HOWTO (R_PPC_LOCAL24PC, /* type */
529 2, /* size (0 = byte, 1 = short, 2 = long) */
531 true, /* pc_relative */
533 complain_overflow_signed, /* complain_on_overflow */
534 bfd_elf_generic_reloc, /* special_function */
535 "R_PPC_LOCAL24PC", /* name */
536 false, /* partial_inplace */
538 0x3fffffc, /* dst_mask */
539 true), /* pcrel_offset */
541 /* Like R_PPC_ADDR32, but may be unaligned. */
542 HOWTO (R_PPC_UADDR32, /* type */
544 2, /* size (0 = byte, 1 = short, 2 = long) */
546 false, /* pc_relative */
548 complain_overflow_bitfield, /* complain_on_overflow */
549 bfd_elf_generic_reloc, /* special_function */
550 "R_PPC_UADDR32", /* name */
551 false, /* partial_inplace */
553 0xffffffff, /* dst_mask */
554 false), /* pcrel_offset */
556 /* Like R_PPC_ADDR16, but may be unaligned. */
557 HOWTO (R_PPC_UADDR16, /* type */
559 1, /* size (0 = byte, 1 = short, 2 = long) */
561 false, /* pc_relative */
563 complain_overflow_bitfield, /* complain_on_overflow */
564 bfd_elf_generic_reloc, /* special_function */
565 "R_PPC_UADDR16", /* name */
566 false, /* partial_inplace */
568 0xffff, /* dst_mask */
569 false), /* pcrel_offset */
571 /* 32-bit PC relative */
572 HOWTO (R_PPC_REL32, /* type */
574 2, /* size (0 = byte, 1 = short, 2 = long) */
576 true, /* pc_relative */
578 complain_overflow_bitfield, /* complain_on_overflow */
579 bfd_elf_generic_reloc, /* special_function */
580 "R_PPC_REL32", /* name */
581 false, /* partial_inplace */
583 0xffffffff, /* dst_mask */
584 true), /* pcrel_offset */
586 /* 32-bit relocation to the symbol's procedure linkage table.
587 FIXME: not supported. */
588 HOWTO (R_PPC_PLT32, /* type */
590 2, /* size (0 = byte, 1 = short, 2 = long) */
592 false, /* pc_relative */
594 complain_overflow_bitfield, /* complain_on_overflow */
595 bfd_elf_generic_reloc, /* special_function */
596 "R_PPC_PLT32", /* name */
597 false, /* partial_inplace */
600 false), /* pcrel_offset */
602 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
603 FIXME: not supported. */
604 HOWTO (R_PPC_PLTREL32, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 true, /* pc_relative */
610 complain_overflow_bitfield, /* complain_on_overflow */
611 bfd_elf_generic_reloc, /* special_function */
612 "R_PPC_PLTREL32", /* name */
613 false, /* partial_inplace */
616 true), /* pcrel_offset */
618 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
620 HOWTO (R_PPC_PLT16_LO, /* type */
622 1, /* size (0 = byte, 1 = short, 2 = long) */
624 false, /* pc_relative */
626 complain_overflow_dont, /* complain_on_overflow */
627 bfd_elf_generic_reloc, /* special_function */
628 "R_PPC_PLT16_LO", /* name */
629 false, /* partial_inplace */
631 0xffff, /* dst_mask */
632 false), /* pcrel_offset */
634 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
636 HOWTO (R_PPC_PLT16_HI, /* type */
638 1, /* size (0 = byte, 1 = short, 2 = long) */
640 false, /* pc_relative */
642 complain_overflow_bitfield, /* complain_on_overflow */
643 bfd_elf_generic_reloc, /* special_function */
644 "R_PPC_PLT16_HI", /* name */
645 false, /* partial_inplace */
647 0xffff, /* dst_mask */
648 false), /* pcrel_offset */
650 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
652 HOWTO (R_PPC_PLT16_HA, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 false, /* pc_relative */
658 complain_overflow_bitfield, /* complain_on_overflow */
659 ppc_elf_addr16_ha_reloc, /* special_function */
660 "R_PPC_PLT16_HA", /* name */
661 false, /* partial_inplace */
663 0xffff, /* dst_mask */
664 false), /* pcrel_offset */
666 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
668 HOWTO (R_PPC_SDAREL16, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 false, /* pc_relative */
674 complain_overflow_signed, /* complain_on_overflow */
675 bfd_elf_generic_reloc, /* special_function */
676 "R_PPC_SDAREL16", /* name */
677 false, /* partial_inplace */
679 0xffff, /* dst_mask */
680 false), /* pcrel_offset */
682 /* 32-bit section relative relocation. */
683 HOWTO (R_PPC_SECTOFF, /* type */
685 2, /* size (0 = byte, 1 = short, 2 = long) */
687 true, /* pc_relative */
689 complain_overflow_bitfield, /* complain_on_overflow */
690 bfd_elf_generic_reloc, /* special_function */
691 "R_PPC_SECTOFF", /* name */
692 false, /* partial_inplace */
695 true), /* pcrel_offset */
697 /* 16-bit lower half section relative relocation. */
698 HOWTO (R_PPC_SECTOFF_LO, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 false, /* pc_relative */
704 complain_overflow_dont, /* complain_on_overflow */
705 bfd_elf_generic_reloc, /* special_function */
706 "R_PPC_SECTOFF_LO", /* name */
707 false, /* partial_inplace */
709 0xffff, /* dst_mask */
710 false), /* pcrel_offset */
712 /* 16-bit upper half section relative relocation. */
713 HOWTO (R_PPC_SECTOFF_HI, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 false, /* pc_relative */
719 complain_overflow_bitfield, /* complain_on_overflow */
720 bfd_elf_generic_reloc, /* special_function */
721 "R_PPC_SECTOFF_HI", /* name */
722 false, /* partial_inplace */
724 0xffff, /* dst_mask */
725 false), /* pcrel_offset */
727 /* 16-bit upper half adjusted section relative relocation. */
728 HOWTO (R_PPC_SECTOFF_HA, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 false, /* pc_relative */
734 complain_overflow_bitfield, /* complain_on_overflow */
735 ppc_elf_addr16_ha_reloc, /* special_function */
736 "R_PPC_SECTOFF_HA", /* name */
737 false, /* partial_inplace */
739 0xffff, /* dst_mask */
740 false), /* pcrel_offset */
742 /* The remaining relocs are from the Embedded ELF ABI, and are not
743 in the SVR4 ELF ABI. */
745 /* 32 bit value resulting from the addend minus the symbol */
746 HOWTO (R_PPC_EMB_NADDR32, /* type */
748 2, /* size (0 = byte, 1 = short, 2 = long) */
750 false, /* pc_relative */
752 complain_overflow_bitfield, /* complain_on_overflow */
753 bfd_elf_generic_reloc, /* special_function */
754 "R_PPC_EMB_NADDR32", /* name */
755 false, /* partial_inplace */
757 0xffffffff, /* dst_mask */
758 false), /* pcrel_offset */
760 /* 16 bit value resulting from the addend minus the symbol */
761 HOWTO (R_PPC_EMB_NADDR16, /* type */
763 1, /* size (0 = byte, 1 = short, 2 = long) */
765 false, /* pc_relative */
767 complain_overflow_bitfield, /* complain_on_overflow */
768 bfd_elf_generic_reloc, /* special_function */
769 "R_PPC_EMB_NADDR16", /* name */
770 false, /* partial_inplace */
772 0xffff, /* dst_mask */
773 false), /* pcrel_offset */
775 /* 16 bit value resulting from the addend minus the symbol */
776 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
778 1, /* size (0 = byte, 1 = short, 2 = long) */
780 false, /* pc_relative */
782 complain_overflow_dont,/* complain_on_overflow */
783 bfd_elf_generic_reloc, /* special_function */
784 "R_PPC_EMB_ADDR16_LO", /* name */
785 false, /* partial_inplace */
787 0xffff, /* dst_mask */
788 false), /* pcrel_offset */
790 /* The high order 16 bits of the addend minus the symbol */
791 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 false, /* pc_relative */
797 complain_overflow_dont, /* complain_on_overflow */
798 bfd_elf_generic_reloc, /* special_function */
799 "R_PPC_EMB_NADDR16_HI", /* name */
800 false, /* partial_inplace */
802 0xffff, /* dst_mask */
803 false), /* pcrel_offset */
805 /* The high order 16 bits of the result of the addend minus the address,
806 plus 1 if the contents of the low 16 bits, treated as a signed number,
808 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
810 1, /* size (0 = byte, 1 = short, 2 = long) */
812 false, /* pc_relative */
814 complain_overflow_dont, /* complain_on_overflow */
815 ppc_elf_addr16_ha_reloc, /* special_function */
816 "R_PPC_EMB_NADDR16_HA", /* name */
817 false, /* partial_inplace */
819 0xffff, /* dst_mask */
820 false), /* pcrel_offset */
822 /* 16 bit value resulting from allocating a 4 byte word to hold an
823 address in the .sdata section, and returning the offset from
824 _SDA_BASE_ for that relocation */
825 HOWTO (R_PPC_EMB_SDAI16, /* type */
827 1, /* size (0 = byte, 1 = short, 2 = long) */
829 false, /* pc_relative */
831 complain_overflow_bitfield, /* complain_on_overflow */
832 bfd_elf_generic_reloc, /* special_function */
833 "R_PPC_EMB_SDAI16", /* name */
834 false, /* partial_inplace */
836 0xffff, /* dst_mask */
837 false), /* pcrel_offset */
839 /* 16 bit value resulting from allocating a 4 byte word to hold an
840 address in the .sdata2 section, and returning the offset from
841 _SDA2_BASE_ for that relocation */
842 HOWTO (R_PPC_EMB_SDA2I16, /* type */
844 1, /* size (0 = byte, 1 = short, 2 = long) */
846 false, /* pc_relative */
848 complain_overflow_bitfield, /* complain_on_overflow */
849 bfd_elf_generic_reloc, /* special_function */
850 "R_PPC_EMB_SDA2I16", /* name */
851 false, /* partial_inplace */
853 0xffff, /* dst_mask */
854 false), /* pcrel_offset */
856 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
858 HOWTO (R_PPC_EMB_SDA2REL, /* type */
860 1, /* size (0 = byte, 1 = short, 2 = long) */
862 false, /* pc_relative */
864 complain_overflow_signed, /* complain_on_overflow */
865 bfd_elf_generic_reloc, /* special_function */
866 "R_PPC_EMB_SDA2REL", /* name */
867 false, /* partial_inplace */
869 0xffff, /* dst_mask */
870 false), /* pcrel_offset */
872 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
873 signed offset from the appropriate base, and filling in the register
874 field with the appropriate register (0, 2, or 13). */
875 HOWTO (R_PPC_EMB_SDA21, /* type */
877 2, /* size (0 = byte, 1 = short, 2 = long) */
879 false, /* pc_relative */
881 complain_overflow_signed, /* complain_on_overflow */
882 bfd_elf_generic_reloc, /* special_function */
883 "R_PPC_EMB_SDA21", /* name */
884 false, /* partial_inplace */
886 0xffff, /* dst_mask */
887 false), /* pcrel_offset */
889 /* Relocation not handled: R_PPC_EMB_MRKREF */
890 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
891 /* Relocation not handled: R_PPC_EMB_RELST_LO */
892 /* Relocation not handled: R_PPC_EMB_RELST_HI */
893 /* Relocation not handled: R_PPC_EMB_RELST_HA */
894 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
896 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
897 in the 16 bit signed offset from the appropriate base, and filling in the
898 register field with the appropriate register (0, 2, or 13). */
899 HOWTO (R_PPC_EMB_RELSDA, /* type */
901 1, /* size (0 = byte, 1 = short, 2 = long) */
903 true, /* pc_relative */
905 complain_overflow_signed, /* complain_on_overflow */
906 bfd_elf_generic_reloc, /* special_function */
907 "R_PPC_EMB_RELSDA", /* name */
908 false, /* partial_inplace */
910 0xffff, /* dst_mask */
911 false), /* pcrel_offset */
913 /* GNU extension to record C++ vtable hierarchy */
914 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
916 0, /* size (0 = byte, 1 = short, 2 = long) */
918 false, /* pc_relative */
920 complain_overflow_dont, /* complain_on_overflow */
921 NULL, /* special_function */
922 "R_PPC_GNU_VTINHERIT", /* name */
923 false, /* partial_inplace */
926 false), /* pcrel_offset */
928 /* GNU extension to record C++ vtable member usage */
929 HOWTO (R_PPC_GNU_VTENTRY, /* type */
931 0, /* size (0 = byte, 1 = short, 2 = long) */
933 false, /* pc_relative */
935 complain_overflow_dont, /* complain_on_overflow */
936 NULL, /* special_function */
937 "R_PPC_GNU_VTENTRY", /* name */
938 false, /* partial_inplace */
941 false), /* pcrel_offset */
943 /* Phony reloc to handle AIX style TOC entries */
944 HOWTO (R_PPC_TOC16, /* type */
946 1, /* size (0 = byte, 1 = short, 2 = long) */
948 false, /* pc_relative */
950 complain_overflow_signed, /* complain_on_overflow */
951 bfd_elf_generic_reloc, /* special_function */
952 "R_PPC_TOC16", /* name */
953 false, /* partial_inplace */
955 0xffff, /* dst_mask */
956 false), /* pcrel_offset */
959 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
962 ppc_elf_howto_init ()
964 unsigned int i, type;
966 for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
968 type = ppc_elf_howto_raw[i].type;
969 BFD_ASSERT (type < sizeof (ppc_elf_howto_table) / sizeof (ppc_elf_howto_table[0]));
970 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
974 /* This function handles relaxing for the PPC with option --mpc860c0[=<n>].
976 The MPC860, revision C0 or earlier contains a bug in the die.
977 If all of the following conditions are true, the next instruction
978 to be executed *may* be treated as a no-op.
979 1/ A forward branch is executed.
980 2/ The branch is predicted as not taken.
981 3/ The branch is taken.
982 4/ The branch is located in the last 5 words of a page.
983 (The EOP limit is 5 by default but may be specified as any value from 1-10.)
985 Our software solution is to detect these problematic branches in a
986 linker pass and modify them as follows:
987 1/ Unconditional branches - Since these are always predicted taken,
988 there is no problem and no action is required.
989 2/ Conditional backward branches - No problem, no action required.
990 3/ Conditional forward branches - Ensure that the "inverse prediction
991 bit" is set (ensure it is predicted taken).
992 4/ Conditional register branches - Ensure that the "y bit" is set
993 (ensure it is predicted taken).
996 /* Sort sections by address. */
999 ppc_elf_sort_rela (arg1, arg2)
1003 const Elf_Internal_Rela **rela1 = (const Elf_Internal_Rela**) arg1;
1004 const Elf_Internal_Rela **rela2 = (const Elf_Internal_Rela**) arg2;
1006 /* Sort by offset. */
1007 return ((*rela1)->r_offset - (*rela2)->r_offset);
1011 ppc_elf_relax_section (abfd, isec, link_info, again)
1014 struct bfd_link_info *link_info;
1017 #define PAGESIZE 0x1000
1019 bfd_byte *contents = NULL;
1020 bfd_byte *free_contents = NULL;
1021 Elf_Internal_Rela *internal_relocs = NULL;
1022 Elf_Internal_Rela *free_relocs = NULL;
1023 Elf_Internal_Rela **rela_comb = NULL;
1024 int comb_curr, comb_count;
1026 /* We never have to do this more than once per input section. */
1029 /* If needed, initialize this section's cooked size. */
1030 if (isec->_cooked_size == 0)
1031 isec->_cooked_size = isec->_raw_size;
1033 /* We're only interested in text sections which overlap the
1034 troublesome area at the end of a page. */
1035 if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size)
1037 bfd_vma dot, end_page, end_section;
1038 boolean section_modified;
1040 /* Get the section contents. */
1041 /* Get cached copy if it exists. */
1042 if (elf_section_data (isec)->this_hdr.contents != NULL)
1043 contents = elf_section_data (isec)->this_hdr.contents;
1046 /* Go get them off disk. */
1047 contents = (bfd_byte *) bfd_malloc (isec->_raw_size);
1048 if (contents == NULL)
1050 free_contents = contents;
1052 if (! bfd_get_section_contents (abfd, isec, contents,
1053 (file_ptr) 0, isec->_raw_size))
1059 if (isec->reloc_count)
1064 /* Get a copy of the native relocations. */
1065 internal_relocs = _bfd_elf32_link_read_relocs (
1066 abfd, isec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1067 link_info->keep_memory);
1068 if (internal_relocs == NULL)
1070 if (! link_info->keep_memory)
1071 free_relocs = internal_relocs;
1073 /* Setup a faster access method for the reloc info we need. */
1074 amt = isec->reloc_count;
1075 amt *= sizeof (Elf_Internal_Rela*);
1076 rela_comb = (Elf_Internal_Rela**) bfd_malloc (amt);
1077 if (rela_comb == NULL)
1079 for (n = 0; n < isec->reloc_count; ++n)
1083 r_type = ELF32_R_TYPE (internal_relocs[n].r_info);
1084 if (r_type < 0 || r_type >= (int) R_PPC_max)
1087 /* Prologue constants are sometimes present in the ".text"
1088 sections and they can be identified by their associated relocation.
1089 We don't want to process those words and some others which
1090 can also be identified by their relocations. However, not all
1091 conditional branches will have a relocation so we will
1092 only ignore words that 1) have a reloc, and 2) the reloc
1093 is not applicable to a conditional branch.
1094 The array rela_comb is built here for use in the EOP scan loop. */
1097 case R_PPC_ADDR14_BRNTAKEN: /* absolute, predicted not taken */
1098 case R_PPC_REL14: /* relative cond. br. */
1099 case R_PPC_REL14_BRNTAKEN: /* rel. cond. br., predicted not taken */
1100 /* We should check the instruction. */
1103 /* The word is not a conditional branch - ignore it. */
1104 rela_comb[comb_count++] = &internal_relocs[n];
1109 qsort (rela_comb, (size_t) comb_count, sizeof (int), ppc_elf_sort_rela);
1112 /* Enumerate each EOP region that overlaps this section. */
1113 end_section = isec->vma + isec->_cooked_size;
1114 dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1;
1115 dot -= link_info->mpc860c0;
1116 section_modified = false;
1117 if (dot < isec->vma) /* Increment the start position if this section */
1118 dot = isec->vma; /* begins in the middle of its first EOP region. */
1121 dot += PAGESIZE, end_page += PAGESIZE)
1124 /* Check each word in this EOP region. */
1125 for (; dot < end_page; dot += 4)
1127 bfd_vma isec_offset;
1129 boolean skip, modified;
1131 /* Don't process this word if there is a relocation for it and
1132 the relocation indicates the word is not a conditional branch. */
1134 isec_offset = dot - isec->vma;
1135 for (; comb_curr<comb_count; ++comb_curr)
1139 r_offset = rela_comb[comb_curr]->r_offset;
1140 if (r_offset >= isec_offset)
1142 if (r_offset == isec_offset) skip = true;
1148 /* Check the current word for a problematic conditional branch. */
1149 #define BO0(insn) ((insn) & 0x02000000)
1150 #define BO2(insn) ((insn) & 0x00800000)
1151 #define BO4(insn) ((insn) & 0x00200000)
1152 insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset);
1154 if ((insn & 0xFc000000) == 0x40000000)
1156 /* Instruction is BCx */
1157 if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
1160 /* This branch is predicted as "normal".
1161 If this is a forward branch, it is problematic. */
1163 target = insn & 0x0000Fffc; /*extract*/
1164 target = (target ^ 0x8000) - 0x8000; /*sign extend*/
1165 if ((insn & 0x00000002) == 0)
1166 target += dot; /*convert to abs*/
1169 insn |= 0x00200000; /* set the prediction bit */
1174 else if ((insn & 0xFc00Fffe) == 0x4c000420)
1176 /* Instruction is BCCTRx */
1177 if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
1179 /* This branch is predicted as not-taken.
1180 If this is a forward branch, it is problematic.
1181 Since we can't tell statically if it will branch forward,
1182 always set the prediction bit. */
1183 insn |= 0x00200000; /* set the prediction bit */
1187 else if ((insn & 0xFc00Fffe) == 0x4c000020)
1189 /* Instruction is BCLRx */
1190 if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
1192 /* This branch is predicted as not-taken.
1193 If this is a forward branch, it is problematic.
1194 Since we can't tell statically if it will branch forward,
1195 always set the prediction bit. */
1196 insn |= 0x00200000; /* set the prediction bit */
1205 bfd_put_32 (abfd, (bfd_vma) insn, contents + isec_offset);
1206 section_modified = true;
1210 if (section_modified)
1212 elf_section_data (isec)->this_hdr.contents = contents;
1213 free_contents = NULL;
1217 if (rela_comb != NULL)
1223 if (free_relocs != NULL)
1229 if (free_contents != NULL)
1231 if (! link_info->keep_memory)
1232 free (free_contents);
1235 /* Cache the section contents for elf_link_input_bfd. */
1236 elf_section_data (isec)->this_hdr.contents = contents;
1238 free_contents = NULL;
1244 if (rela_comb != NULL)
1246 if (free_relocs != NULL)
1248 if (free_contents != NULL)
1249 free (free_contents);
1253 static reloc_howto_type *
1254 ppc_elf_reloc_type_lookup (abfd, code)
1255 bfd *abfd ATTRIBUTE_UNUSED;
1256 bfd_reloc_code_real_type code;
1258 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1260 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1261 /* Initialize howto table if needed. */
1262 ppc_elf_howto_init ();
1267 return (reloc_howto_type *) NULL;
1269 case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
1270 case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
1271 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
1272 case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
1273 case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
1274 case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
1275 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
1276 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
1277 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
1278 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
1279 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
1280 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
1281 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
1282 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
1283 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
1284 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
1285 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
1286 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
1287 case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
1288 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
1289 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
1290 case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
1291 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
1292 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
1293 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
1294 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
1295 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
1296 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
1297 case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
1298 case BFD_RELOC_32_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
1299 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
1300 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
1301 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
1302 case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
1303 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
1304 case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
1305 case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
1306 case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
1307 case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
1308 case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
1309 case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
1310 case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
1311 case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
1312 case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
1313 case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
1314 case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
1315 case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
1316 case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
1317 case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
1318 case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
1319 case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
1320 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC_GNU_VTINHERIT; break;
1321 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC_GNU_VTENTRY; break;
1324 return ppc_elf_howto_table[(int) ppc_reloc];
1327 /* Set the howto pointer for a PowerPC ELF reloc. */
1330 ppc_elf_info_to_howto (abfd, cache_ptr, dst)
1331 bfd *abfd ATTRIBUTE_UNUSED;
1333 Elf32_Internal_Rela *dst;
1335 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1336 /* Initialize howto table if needed. */
1337 ppc_elf_howto_init ();
1339 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1340 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1343 /* Handle the R_PPC_ADDR16_HA reloc. */
1345 static bfd_reloc_status_type
1346 ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1347 output_bfd, error_message)
1348 bfd *abfd ATTRIBUTE_UNUSED;
1349 arelent *reloc_entry;
1351 PTR data ATTRIBUTE_UNUSED;
1352 asection *input_section;
1354 char **error_message ATTRIBUTE_UNUSED;
1358 if (output_bfd != NULL)
1360 reloc_entry->address += input_section->output_offset;
1361 return bfd_reloc_ok;
1364 if (reloc_entry->address > input_section->_cooked_size)
1365 return bfd_reloc_outofrange;
1367 if (bfd_is_com_section (symbol->section))
1370 relocation = symbol->value;
1372 relocation += symbol->section->output_section->vma;
1373 relocation += symbol->section->output_offset;
1374 relocation += reloc_entry->addend;
1376 reloc_entry->addend += (relocation & 0x8000) << 1;
1378 return bfd_reloc_continue;
1381 /* Function to set whether a module needs the -mrelocatable bit set. */
1384 ppc_elf_set_private_flags (abfd, flags)
1388 BFD_ASSERT (!elf_flags_init (abfd)
1389 || elf_elfheader (abfd)->e_flags == flags);
1391 elf_elfheader (abfd)->e_flags = flags;
1392 elf_flags_init (abfd) = true;
1396 /* Copy backend specific data from one object module to another */
1398 ppc_elf_copy_private_bfd_data (ibfd, obfd)
1402 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1403 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1406 BFD_ASSERT (!elf_flags_init (obfd)
1407 || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
1409 elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
1410 elf_flags_init (obfd) = true;
1414 /* Merge backend specific data from an object file to the output
1415 object file when linking */
1417 ppc_elf_merge_private_bfd_data (ibfd, obfd)
1425 /* Check if we have the same endianess */
1426 if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
1429 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1430 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1433 new_flags = elf_elfheader (ibfd)->e_flags;
1434 old_flags = elf_elfheader (obfd)->e_flags;
1435 if (!elf_flags_init (obfd)) /* First call, no flags set */
1437 elf_flags_init (obfd) = true;
1438 elf_elfheader (obfd)->e_flags = new_flags;
1441 else if (new_flags == old_flags) /* Compatible flags are ok */
1444 else /* Incompatible flags */
1446 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
1449 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1450 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1453 (*_bfd_error_handler)
1454 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
1455 bfd_get_filename (ibfd));
1457 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1458 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1461 (*_bfd_error_handler)
1462 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
1463 bfd_get_filename (ibfd));
1466 /* The output is -mrelocatable-lib iff both the input files are. */
1467 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1468 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1470 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1471 but each input file is either -mrelocatable or -mrelocatable-lib. */
1472 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1473 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1474 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1475 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1477 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
1478 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1480 new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1481 old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1483 /* Warn about any other mismatches */
1484 if (new_flags != old_flags)
1487 (*_bfd_error_handler)
1488 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
1489 bfd_get_filename (ibfd), (long) new_flags, (long) old_flags);
1494 bfd_set_error (bfd_error_bad_value);
1502 /* Handle a PowerPC specific section when reading an object file. This
1503 is called when elfcode.h finds a section with an unknown type. */
1506 ppc_elf_section_from_shdr (abfd, hdr, name)
1508 Elf32_Internal_Shdr *hdr;
1514 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1517 newsect = hdr->bfd_section;
1518 flags = bfd_get_section_flags (abfd, newsect);
1519 if (hdr->sh_flags & SHF_EXCLUDE)
1520 flags |= SEC_EXCLUDE;
1522 if (hdr->sh_type == SHT_ORDERED)
1523 flags |= SEC_SORT_ENTRIES;
1525 bfd_set_section_flags (abfd, newsect, flags);
1529 /* Set up any other section flags and such that may be necessary. */
1532 ppc_elf_fake_sections (abfd, shdr, asect)
1533 bfd *abfd ATTRIBUTE_UNUSED;
1534 Elf32_Internal_Shdr *shdr;
1537 if ((asect->flags & SEC_EXCLUDE) != 0)
1538 shdr->sh_flags |= SHF_EXCLUDE;
1540 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1541 shdr->sh_type = SHT_ORDERED;
1546 /* Create a special linker section */
1547 static elf_linker_section_t *
1548 ppc_elf_create_linker_section (abfd, info, which)
1550 struct bfd_link_info *info;
1551 enum elf_linker_section_enum which;
1553 bfd *dynobj = elf_hash_table (info)->dynobj;
1554 elf_linker_section_t *lsect;
1556 /* Record the first bfd section that needs the special section */
1558 dynobj = elf_hash_table (info)->dynobj = abfd;
1560 /* If this is the first time, create the section */
1561 lsect = elf_linker_section (dynobj, which);
1564 elf_linker_section_t defaults;
1565 static elf_linker_section_t zero_section;
1567 defaults = zero_section;
1568 defaults.which = which;
1569 defaults.hole_written_p = false;
1570 defaults.alignment = 2;
1572 /* Both of these sections are (technically) created by the user
1573 putting data in them, so they shouldn't be marked
1576 The linker creates them so it has somewhere to attach their
1577 respective symbols. In fact, if they were empty it would
1578 be OK to leave the symbol set to 0 (or any random number), because
1579 the appropriate register should never be used. */
1580 defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1586 (*_bfd_error_handler) (_("%s: Unknown special linker type %d"),
1587 bfd_get_filename (abfd),
1590 bfd_set_error (bfd_error_bad_value);
1591 return (elf_linker_section_t *) 0;
1593 case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
1594 defaults.name = ".sdata";
1595 defaults.rel_name = ".rela.sdata";
1596 defaults.bss_name = ".sbss";
1597 defaults.sym_name = "_SDA_BASE_";
1598 defaults.sym_offset = 32768;
1601 case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
1602 defaults.name = ".sdata2";
1603 defaults.rel_name = ".rela.sdata2";
1604 defaults.bss_name = ".sbss2";
1605 defaults.sym_name = "_SDA2_BASE_";
1606 defaults.sym_offset = 32768;
1607 defaults.flags |= SEC_READONLY;
1611 lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
1617 /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we
1618 need to bump up the number of section headers. */
1621 ppc_elf_additional_program_headers (abfd)
1629 s = bfd_get_section_by_name (abfd, ".interp");
1633 s = bfd_get_section_by_name (abfd, ".sbss2");
1634 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1637 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1638 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1644 /* Modify the segment map if needed. */
1647 ppc_elf_modify_segment_map (abfd)
1648 bfd *abfd ATTRIBUTE_UNUSED;
1653 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
1654 to output sections (just like _bfd_elf_create_dynamic_sections has
1655 to create .dynbss and .rela.bss). */
1658 ppc_elf_create_dynamic_sections (abfd, info)
1660 struct bfd_link_info *info;
1662 register asection *s;
1665 if (!_bfd_elf_create_dynamic_sections (abfd, info))
1668 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1669 | SEC_LINKER_CREATED);
1671 s = bfd_make_section (abfd, ".dynsbss");
1673 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
1678 s = bfd_make_section (abfd, ".rela.sbss");
1680 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
1681 || ! bfd_set_section_alignment (abfd, s, 2))
1687 /* Adjust a symbol defined by a dynamic object and referenced by a
1688 regular object. The current definition is in some section of the
1689 dynamic object, but we're not including those sections. We have to
1690 change the definition to something the rest of the link can
1694 ppc_elf_adjust_dynamic_symbol (info, h)
1695 struct bfd_link_info *info;
1696 struct elf_link_hash_entry *h;
1698 bfd *dynobj = elf_hash_table (info)->dynobj;
1700 unsigned int power_of_two;
1704 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string);
1707 /* Make sure we know what is going on here. */
1708 BFD_ASSERT (dynobj != NULL
1709 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1710 || h->weakdef != NULL
1711 || ((h->elf_link_hash_flags
1712 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1713 && (h->elf_link_hash_flags
1714 & ELF_LINK_HASH_REF_REGULAR) != 0
1715 && (h->elf_link_hash_flags
1716 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1718 /* If this is a function, put it in the procedure linkage table. We
1719 will fill in the contents of the procedure linkage table later,
1720 when we know the address of the .got section. */
1721 if (h->type == STT_FUNC
1722 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1724 if (! elf_hash_table (info)->dynamic_sections_created
1725 || SYMBOL_CALLS_LOCAL (info, h)
1726 || (info->shared && h->plt.refcount <= 0))
1728 /* A PLT entry is not required/allowed when:
1730 1. We are not using ld.so; because then the PLT entry
1731 can't be set up, so we can't use one.
1733 2. We know for certain that a call to this symbol
1734 will go to this object.
1736 3. GC has rendered the entry unused.
1737 Note, however, that in an executable all references to the
1738 symbol go to the PLT, so we can't turn it off in that case.
1739 ??? The correct thing to do here is to reference count
1740 all uses of the symbol, not just those to the GOT or PLT. */
1741 h->plt.offset = (bfd_vma) -1;
1742 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1746 /* Make sure this symbol is output as a dynamic symbol. */
1747 if (h->dynindx == -1)
1749 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1752 BFD_ASSERT (h->dynindx != -1);
1754 s = bfd_get_section_by_name (dynobj, ".plt");
1755 BFD_ASSERT (s != NULL);
1757 /* If this is the first .plt entry, make room for the special
1759 if (s->_raw_size == 0)
1760 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
1762 /* The PowerPC PLT is actually composed of two parts, the first part
1763 is 2 words (for a load and a jump), and then there is a remaining
1764 word available at the end. */
1765 plt_offset = (PLT_INITIAL_ENTRY_SIZE
1767 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE)
1768 / PLT_ENTRY_SIZE)));
1770 /* If this symbol is not defined in a regular file, and we are
1771 not generating a shared library, then set the symbol to this
1772 location in the .plt. This is required to make function
1773 pointers compare as equal between the normal executable and
1774 the shared library. */
1776 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1778 h->root.u.def.section = s;
1779 h->root.u.def.value = plt_offset;
1782 h->plt.offset = plt_offset;
1784 /* Make room for this entry. After the 8192nd entry, room
1785 for two entries is allocated. */
1786 if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
1787 >= PLT_NUM_SINGLE_ENTRIES)
1788 s->_raw_size += 2 * PLT_ENTRY_SIZE;
1790 s->_raw_size += PLT_ENTRY_SIZE;
1792 /* We also need to make an entry in the .rela.plt section. */
1793 s = bfd_get_section_by_name (dynobj, ".rela.plt");
1794 BFD_ASSERT (s != NULL);
1795 s->_raw_size += sizeof (Elf32_External_Rela);
1800 /* If this is a weak symbol, and there is a real definition, the
1801 processor independent code will have arranged for us to see the
1802 real definition first, and we can just use the same value. */
1803 if (h->weakdef != NULL)
1805 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1806 || h->weakdef->root.type == bfd_link_hash_defweak);
1807 h->root.u.def.section = h->weakdef->root.u.def.section;
1808 h->root.u.def.value = h->weakdef->root.u.def.value;
1812 /* This is a reference to a symbol defined by a dynamic object which
1813 is not a function. */
1815 /* If we are creating a shared library, we must presume that the
1816 only references to the symbol are via the global offset table.
1817 For such cases we need not do anything here; the relocations will
1818 be handled correctly by relocate_section. */
1822 /* We must allocate the symbol in our .dynbss section, which will
1823 become part of the .bss section of the executable. There will be
1824 an entry for this symbol in the .dynsym section. The dynamic
1825 object will contain position independent code, so all references
1826 from the dynamic object to this symbol will go through the global
1827 offset table. The dynamic linker will use the .dynsym entry to
1828 determine the address it must put in the global offset table, so
1829 both the dynamic object and the regular object will refer to the
1830 same memory location for the variable.
1832 Of course, if the symbol is sufficiently small, we must instead
1833 allocate it in .sbss. FIXME: It would be better to do this if and
1834 only if there were actually SDAREL relocs for that symbol. */
1836 if (h->size <= elf_gp_size (dynobj))
1837 s = bfd_get_section_by_name (dynobj, ".dynsbss");
1839 s = bfd_get_section_by_name (dynobj, ".dynbss");
1840 BFD_ASSERT (s != NULL);
1842 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
1843 copy the initial value out of the dynamic object and into the
1844 runtime process image. We need to remember the offset into the
1845 .rela.bss section we are going to use. */
1846 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1850 if (h->size <= elf_gp_size (dynobj))
1851 srel = bfd_get_section_by_name (dynobj, ".rela.sbss");
1853 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1854 BFD_ASSERT (srel != NULL);
1855 srel->_raw_size += sizeof (Elf32_External_Rela);
1856 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1859 /* We need to figure out the alignment required for this symbol. I
1860 have no idea how ELF linkers handle this. */
1861 power_of_two = bfd_log2 (h->size);
1862 if (power_of_two > 4)
1865 /* Apply the required alignment. */
1866 s->_raw_size = BFD_ALIGN (s->_raw_size,
1867 (bfd_size_type) (1 << power_of_two));
1868 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1870 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1874 /* Define the symbol as being at this point in the section. */
1875 h->root.u.def.section = s;
1876 h->root.u.def.value = s->_raw_size;
1878 /* Increment the section size to make room for the symbol. */
1879 s->_raw_size += h->size;
1884 /* Set the sizes of the dynamic sections. */
1887 ppc_elf_size_dynamic_sections (output_bfd, info)
1888 bfd *output_bfd ATTRIBUTE_UNUSED;
1889 struct bfd_link_info *info;
1897 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
1900 dynobj = elf_hash_table (info)->dynobj;
1901 BFD_ASSERT (dynobj != NULL);
1903 if (elf_hash_table (info)->dynamic_sections_created)
1905 /* Set the contents of the .interp section to the interpreter. */
1908 s = bfd_get_section_by_name (dynobj, ".interp");
1909 BFD_ASSERT (s != NULL);
1910 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1911 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1916 /* We may have created entries in the .rela.got, .rela.sdata, and
1917 .rela.sdata2 sections. However, if we are not creating the
1918 dynamic sections, we will not actually use these entries. Reset
1919 the size of .rela.got, et al, which will cause it to get
1920 stripped from the output file below. */
1921 static char *rela_sections[] = { ".rela.got", ".rela.sdata",
1922 ".rela.sdata2", ".rela.sbss",
1926 for (p = rela_sections; *p != (char *) 0; p++)
1928 s = bfd_get_section_by_name (dynobj, *p);
1934 /* The check_relocs and adjust_dynamic_symbol entry points have
1935 determined the sizes of the various dynamic sections. Allocate
1939 for (s = dynobj->sections; s != NULL; s = s->next)
1944 if ((s->flags & SEC_LINKER_CREATED) == 0)
1947 /* It's OK to base decisions on the section name, because none
1948 of the dynobj section names depend upon the input files. */
1949 name = bfd_get_section_name (dynobj, s);
1953 if (strcmp (name, ".plt") == 0)
1955 if (s->_raw_size == 0)
1957 /* Strip this section if we don't need it; see the
1963 /* Remember whether there is a PLT. */
1967 else if (strncmp (name, ".rela", 5) == 0)
1969 if (s->_raw_size == 0)
1971 /* If we don't need this section, strip it from the
1972 output file. This is mostly to handle .rela.bss and
1973 .rela.plt. We must create both sections in
1974 create_dynamic_sections, because they must be created
1975 before the linker maps input sections to output
1976 sections. The linker does that before
1977 adjust_dynamic_symbol is called, and it is that
1978 function which decides whether anything needs to go
1979 into these sections. */
1984 /* Remember whether there are any relocation sections. */
1987 /* We use the reloc_count field as a counter if we need
1988 to copy relocs into the output file. */
1992 else if (strcmp (name, ".got") != 0
1993 && strcmp (name, ".sdata") != 0
1994 && strcmp (name, ".sdata2") != 0)
1996 /* It's not one of our sections, so don't allocate space. */
2002 _bfd_strip_section_from_output (info, s);
2006 /* Allocate memory for the section contents. */
2007 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2008 if (s->contents == NULL && s->_raw_size != 0)
2012 if (elf_hash_table (info)->dynamic_sections_created)
2014 /* Add some entries to the .dynamic section. We fill in the
2015 values later, in ppc_elf_finish_dynamic_sections, but we
2016 must add the entries now so that we get the correct size for
2017 the .dynamic section. The DT_DEBUG entry is filled in by the
2018 dynamic linker and used by the debugger. */
2019 #define add_dynamic_entry(TAG, VAL) \
2020 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2024 if (!add_dynamic_entry (DT_DEBUG, 0))
2030 if (!add_dynamic_entry (DT_PLTGOT, 0)
2031 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2032 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2033 || !add_dynamic_entry (DT_JMPREL, 0))
2039 if (!add_dynamic_entry (DT_RELA, 0)
2040 || !add_dynamic_entry (DT_RELASZ, 0)
2041 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2045 if ((info->flags & DF_TEXTREL) != 0)
2047 if (!add_dynamic_entry (DT_TEXTREL, 0))
2049 info->flags |= DF_TEXTREL;
2052 #undef add_dynamic_entry
2057 /* Look through the relocs for a section during the first phase, and
2058 allocate space in the global offset table or procedure linkage
2062 ppc_elf_check_relocs (abfd, info, sec, relocs)
2064 struct bfd_link_info *info;
2066 const Elf_Internal_Rela *relocs;
2069 Elf_Internal_Shdr *symtab_hdr;
2070 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2071 const Elf_Internal_Rela *rel;
2072 const Elf_Internal_Rela *rel_end;
2073 bfd_signed_vma *local_got_refcounts;
2074 elf_linker_section_t *sdata;
2075 elf_linker_section_t *sdata2;
2077 asection *sgot = NULL;
2078 asection *srelgot = NULL;
2080 if (info->relocateable)
2084 fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
2085 bfd_get_section_name (abfd, sec),
2086 bfd_get_filename (abfd));
2089 /* Create the linker generated sections all the time so that the
2090 special symbols are created. */
2092 if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
2094 sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
2099 if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
2101 sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
2106 dynobj = elf_hash_table (info)->dynobj;
2107 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2108 local_got_refcounts = elf_local_got_refcounts (abfd);
2110 sym_hashes = elf_sym_hashes (abfd);
2111 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
2112 if (!elf_bad_symtab (abfd))
2113 sym_hashes_end -= symtab_hdr->sh_info;
2117 rel_end = relocs + sec->reloc_count;
2118 for (rel = relocs; rel < rel_end; rel++)
2120 unsigned long r_symndx;
2121 struct elf_link_hash_entry *h;
2123 r_symndx = ELF32_R_SYM (rel->r_info);
2124 if (r_symndx < symtab_hdr->sh_info)
2127 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2129 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2130 This shows up in particular in an R_PPC_ADDR32 in the eabi
2132 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2137 elf_hash_table (info)->dynobj = dynobj = abfd;
2138 if (! _bfd_elf_create_got_section (dynobj, info))
2140 sgot = bfd_get_section_by_name (dynobj, ".got");
2141 BFD_ASSERT (sgot != NULL);
2145 switch (ELF32_R_TYPE (rel->r_info))
2147 /* GOT16 relocations */
2149 case R_PPC_GOT16_LO:
2150 case R_PPC_GOT16_HI:
2151 case R_PPC_GOT16_HA:
2152 /* This symbol requires a global offset table entry. */
2157 elf_hash_table (info)->dynobj = dynobj = abfd;
2158 if (! _bfd_elf_create_got_section (dynobj, info))
2160 sgot = bfd_get_section_by_name (dynobj, ".got");
2161 BFD_ASSERT (sgot != NULL);
2165 && (h != NULL || info->shared))
2167 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2168 if (srelgot == NULL)
2170 srelgot = bfd_make_section (dynobj, ".rela.got");
2172 || ! bfd_set_section_flags (dynobj, srelgot,
2177 | SEC_LINKER_CREATED
2179 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2186 if (h->got.refcount == -1)
2188 /* Make sure this symbol is output as a dynamic symbol. */
2189 if (h->dynindx == -1)
2190 if (!bfd_elf32_link_record_dynamic_symbol (info, h))
2193 /* Allocate space in the .got. */
2194 sgot->_raw_size += 4;
2195 /* Allocate relocation space. */
2196 srelgot->_raw_size += sizeof (Elf32_External_Rela);
2198 h->got.refcount = 1;
2205 /* This is a global offset table entry for a local symbol. */
2206 if (local_got_refcounts == NULL)
2210 size = symtab_hdr->sh_info;
2211 size *= sizeof (bfd_signed_vma);
2213 = (bfd_signed_vma *) bfd_alloc (abfd, size);
2214 if (local_got_refcounts == NULL)
2216 elf_local_got_refcounts (abfd) = local_got_refcounts;
2217 memset (local_got_refcounts, -1, (size_t) size);
2219 if (local_got_refcounts[r_symndx] == -1)
2221 sgot->_raw_size += 4;
2223 /* If we are generating a shared object, we need to
2224 output a R_PPC_RELATIVE reloc so that the
2225 dynamic linker can adjust this GOT entry. */
2227 srelgot->_raw_size += sizeof (Elf32_External_Rela);
2229 local_got_refcounts[r_symndx] = 1;
2232 local_got_refcounts[r_symndx]++;
2236 /* Indirect .sdata relocation */
2237 case R_PPC_EMB_SDAI16:
2240 ((*_bfd_error_handler)
2241 (_("%s: relocation %s cannot be used when making a shared object"),
2242 bfd_get_filename (abfd), "R_PPC_EMB_SDAI16"));
2246 if (srelgot == NULL && (h != NULL || info->shared))
2248 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2249 if (srelgot == NULL)
2251 srelgot = bfd_make_section (dynobj, ".rela.got");
2253 || ! bfd_set_section_flags (dynobj, srelgot,
2258 | SEC_LINKER_CREATED
2260 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2265 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
2270 /* Indirect .sdata2 relocation */
2271 case R_PPC_EMB_SDA2I16:
2274 ((*_bfd_error_handler)
2275 (_("%s: relocation %s cannot be used when making a shared object"),
2276 bfd_get_filename (abfd), "R_PPC_EMB_SDA2I16"));
2280 if (srelgot == NULL && (h != NULL || info->shared))
2282 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2283 if (srelgot == NULL)
2285 srelgot = bfd_make_section (dynobj, ".rela.got");
2287 || ! bfd_set_section_flags (dynobj, srelgot,
2292 | SEC_LINKER_CREATED
2294 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2299 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
2304 case R_PPC_SDAREL16:
2305 case R_PPC_EMB_SDA2REL:
2306 case R_PPC_EMB_SDA21:
2309 ((*_bfd_error_handler)
2310 (_("%s: relocation %s cannot be used when making a shared object"),
2311 bfd_get_filename (abfd),
2312 ppc_elf_howto_table[(int) ELF32_R_TYPE (rel->r_info)]->name));
2318 case R_PPC_PLTREL24:
2319 case R_PPC_PLT16_LO:
2320 case R_PPC_PLT16_HI:
2321 case R_PPC_PLT16_HA:
2323 fprintf (stderr, "Reloc requires a PLT entry\n");
2325 /* This symbol requires a procedure linkage table entry. We
2326 actually build the entry in adjust_dynamic_symbol,
2327 because this might be a case of linking PIC code without
2328 linking in any dynamic objects, in which case we don't
2329 need to generate a procedure linkage table after all. */
2333 /* It does not make sense to have a procedure linkage
2334 table entry for a local symbol. */
2335 bfd_set_error (bfd_error_bad_value);
2339 /* Make sure this symbol is output as a dynamic symbol. */
2340 if (h->dynindx == -1)
2342 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2345 if (h->plt.refcount == -1)
2347 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2348 h->plt.refcount = 1;
2354 /* The following relocations don't need to propagate the
2355 relocation if linking a shared object since they are
2356 section relative. */
2358 case R_PPC_SECTOFF_LO:
2359 case R_PPC_SECTOFF_HI:
2360 case R_PPC_SECTOFF_HA:
2363 /* This refers only to functions defined in the shared library */
2364 case R_PPC_LOCAL24PC:
2367 /* This relocation describes the C++ object vtable hierarchy.
2368 Reconstruct it for later use during GC. */
2369 case R_PPC_GNU_VTINHERIT:
2370 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2374 /* This relocation describes which C++ vtable entries are actually
2375 used. Record for later use during GC. */
2376 case R_PPC_GNU_VTENTRY:
2377 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2381 /* When creating a shared object, we must copy these
2382 relocs into the output file. We create a reloc
2383 section in dynobj and make room for the reloc. */
2386 case R_PPC_REL14_BRTAKEN:
2387 case R_PPC_REL14_BRNTAKEN:
2390 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2391 || SYMBOL_REFERENCES_LOCAL (info, h))
2399 fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n",
2400 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
2406 name = (bfd_elf_string_from_elf_section
2408 elf_elfheader (abfd)->e_shstrndx,
2409 elf_section_data (sec)->rel_hdr.sh_name));
2413 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2414 && strcmp (bfd_get_section_name (abfd, sec),
2417 sreloc = bfd_get_section_by_name (dynobj, name);
2422 sreloc = bfd_make_section (dynobj, name);
2423 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2424 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2425 if ((sec->flags & SEC_ALLOC) != 0)
2426 flags |= SEC_ALLOC | SEC_LOAD;
2428 || ! bfd_set_section_flags (dynobj, sreloc, flags)
2429 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
2432 if (sec->flags & SEC_READONLY)
2433 info->flags |= DF_TEXTREL;
2436 sreloc->_raw_size += sizeof (Elf32_External_Rela);
2438 /* FIXME: We should here do what the m68k and i386
2439 backends do: if the reloc is pc-relative, record it
2440 in case it turns out that the reloc is unnecessary
2441 because the symbol is forced local by versioning or
2442 we are linking with -Bdynamic. Fortunately this
2443 case is not frequent. */
2453 /* Return the section that should be marked against GC for a given
2457 ppc_elf_gc_mark_hook (abfd, info, rel, h, sym)
2459 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2460 Elf_Internal_Rela *rel;
2461 struct elf_link_hash_entry *h;
2462 Elf_Internal_Sym *sym;
2466 switch (ELF32_R_TYPE (rel->r_info))
2468 case R_PPC_GNU_VTINHERIT:
2469 case R_PPC_GNU_VTENTRY:
2473 switch (h->root.type)
2475 case bfd_link_hash_defined:
2476 case bfd_link_hash_defweak:
2477 return h->root.u.def.section;
2479 case bfd_link_hash_common:
2480 return h->root.u.c.p->section;
2489 if (!(elf_bad_symtab (abfd)
2490 && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
2491 && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
2492 && sym->st_shndx != SHN_COMMON))
2494 return bfd_section_from_elf_index (abfd, sym->st_shndx);
2501 /* Update the got entry reference counts for the section being removed. */
2504 ppc_elf_gc_sweep_hook (abfd, info, sec, relocs)
2506 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2508 const Elf_Internal_Rela *relocs;
2510 Elf_Internal_Shdr *symtab_hdr;
2511 struct elf_link_hash_entry **sym_hashes;
2512 bfd_signed_vma *local_got_refcounts;
2513 const Elf_Internal_Rela *rel, *relend;
2514 unsigned long r_symndx;
2515 struct elf_link_hash_entry *h;
2517 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2518 sym_hashes = elf_sym_hashes (abfd);
2519 local_got_refcounts = elf_local_got_refcounts (abfd);
2521 relend = relocs + sec->reloc_count;
2522 for (rel = relocs; rel < relend; rel++)
2523 switch (ELF32_R_TYPE (rel->r_info))
2526 case R_PPC_GOT16_LO:
2527 case R_PPC_GOT16_HI:
2528 case R_PPC_GOT16_HA:
2529 r_symndx = ELF32_R_SYM (rel->r_info);
2530 if (r_symndx >= symtab_hdr->sh_info)
2532 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2533 if (h->got.refcount > 0)
2536 else if (local_got_refcounts != NULL)
2538 if (local_got_refcounts[r_symndx] > 0)
2539 local_got_refcounts[r_symndx]--;
2544 case R_PPC_PLTREL24:
2545 case R_PPC_PLT16_LO:
2546 case R_PPC_PLT16_HI:
2547 case R_PPC_PLT16_HA:
2548 r_symndx = ELF32_R_SYM (rel->r_info);
2549 if (r_symndx >= symtab_hdr->sh_info)
2551 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2552 if (h->plt.refcount > 0)
2564 /* Hook called by the linker routine which adds symbols from an object
2565 file. We use it to put .comm items in .sbss, and not .bss. */
2568 ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2570 struct bfd_link_info *info;
2571 const Elf_Internal_Sym *sym;
2572 const char **namep ATTRIBUTE_UNUSED;
2573 flagword *flagsp ATTRIBUTE_UNUSED;
2577 if (sym->st_shndx == SHN_COMMON
2578 && !info->relocateable
2579 && sym->st_size <= elf_gp_size (abfd))
2581 /* Common symbols less than or equal to -G nn bytes are automatically
2583 elf_linker_section_t *sdata
2584 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
2586 if (!sdata->bss_section)
2590 /* We don't go through bfd_make_section, because we don't
2591 want to attach this common section to DYNOBJ. The linker
2592 will move the symbols to the appropriate output section
2593 when it defines common symbols. */
2594 amt = sizeof (asection);
2595 sdata->bss_section = (asection *) bfd_zalloc (abfd, amt);
2596 if (sdata->bss_section == NULL)
2598 sdata->bss_section->name = sdata->bss_name;
2599 sdata->bss_section->flags = SEC_IS_COMMON;
2600 sdata->bss_section->output_section = sdata->bss_section;
2601 amt = sizeof (asymbol);
2602 sdata->bss_section->symbol = (asymbol *) bfd_zalloc (abfd, amt);
2603 amt = sizeof (asymbol *);
2604 sdata->bss_section->symbol_ptr_ptr =
2605 (asymbol **) bfd_zalloc (abfd, amt);
2606 if (sdata->bss_section->symbol == NULL
2607 || sdata->bss_section->symbol_ptr_ptr == NULL)
2609 sdata->bss_section->symbol->name = sdata->bss_name;
2610 sdata->bss_section->symbol->flags = BSF_SECTION_SYM;
2611 sdata->bss_section->symbol->section = sdata->bss_section;
2612 *sdata->bss_section->symbol_ptr_ptr = sdata->bss_section->symbol;
2615 *secp = sdata->bss_section;
2616 *valp = sym->st_size;
2622 /* Finish up dynamic symbol handling. We set the contents of various
2623 dynamic sections here. */
2626 ppc_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
2628 struct bfd_link_info *info;
2629 struct elf_link_hash_entry *h;
2630 Elf_Internal_Sym *sym;
2635 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
2636 h->root.root.string);
2639 dynobj = elf_hash_table (info)->dynobj;
2640 BFD_ASSERT (dynobj != NULL);
2642 if (h->plt.offset != (bfd_vma) -1)
2646 Elf_Internal_Rela rela;
2647 bfd_vma reloc_index;
2650 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
2653 /* This symbol has an entry in the procedure linkage table. Set
2656 BFD_ASSERT (h->dynindx != -1);
2658 splt = bfd_get_section_by_name (dynobj, ".plt");
2659 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2660 BFD_ASSERT (splt != NULL && srela != NULL);
2662 /* We don't need to fill in the .plt. The ppc dynamic linker
2665 /* Fill in the entry in the .rela.plt section. */
2666 rela.r_offset = (splt->output_section->vma
2667 + splt->output_offset
2669 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
2672 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
2673 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
2674 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
2675 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2676 ((Elf32_External_Rela *) srela->contents
2679 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
2681 /* Mark the symbol as undefined, rather than as defined in
2682 the .plt section. Leave the value alone. */
2683 sym->st_shndx = SHN_UNDEF;
2684 /* If the symbol is weak, we do need to clear the value.
2685 Otherwise, the PLT entry would provide a definition for
2686 the symbol even if the symbol wasn't defined anywhere,
2687 and so the symbol would never be NULL. */
2688 if ((h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
2694 if (h->got.offset != (bfd_vma) -1)
2698 Elf_Internal_Rela rela;
2700 /* This symbol has an entry in the global offset table. Set it
2703 sgot = bfd_get_section_by_name (dynobj, ".got");
2704 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2705 BFD_ASSERT (sgot != NULL && srela != NULL);
2707 rela.r_offset = (sgot->output_section->vma
2708 + sgot->output_offset
2709 + (h->got.offset &~ (bfd_vma) 1));
2711 /* If this is a -Bsymbolic link, and the symbol is defined
2712 locally, we just want to emit a RELATIVE reloc. The entry in
2713 the global offset table will already have been initialized in
2714 the relocate_section function. */
2716 && SYMBOL_REFERENCES_LOCAL (info, h))
2718 rela.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
2719 rela.r_addend = (h->root.u.def.value
2720 + h->root.u.def.section->output_section->vma
2721 + h->root.u.def.section->output_offset);
2725 BFD_ASSERT ((h->got.offset & 1) == 0);
2726 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset);
2727 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_GLOB_DAT);
2731 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2732 ((Elf32_External_Rela *) srela->contents
2733 + srela->reloc_count));
2734 ++srela->reloc_count;
2737 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
2740 Elf_Internal_Rela rela;
2742 /* This symbols needs a copy reloc. Set it up. */
2745 fprintf (stderr, ", copy");
2748 BFD_ASSERT (h->dynindx != -1);
2750 if (h->size <= elf_gp_size (dynobj))
2751 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2754 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2756 BFD_ASSERT (s != NULL);
2758 rela.r_offset = (h->root.u.def.value
2759 + h->root.u.def.section->output_section->vma
2760 + h->root.u.def.section->output_offset);
2761 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
2763 bfd_elf32_swap_reloca_out (output_bfd, &rela,
2764 ((Elf32_External_Rela *) s->contents
2770 fprintf (stderr, "\n");
2773 /* Mark some specially defined symbols as absolute. */
2774 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2775 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2776 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2777 sym->st_shndx = SHN_ABS;
2782 /* Finish up the dynamic sections. */
2785 ppc_elf_finish_dynamic_sections (output_bfd, info)
2787 struct bfd_link_info *info;
2790 bfd *dynobj = elf_hash_table (info)->dynobj;
2791 asection *sgot = bfd_get_section_by_name (dynobj, ".got");
2794 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
2797 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2799 if (elf_hash_table (info)->dynamic_sections_created)
2802 Elf32_External_Dyn *dyncon, *dynconend;
2804 splt = bfd_get_section_by_name (dynobj, ".plt");
2805 BFD_ASSERT (splt != NULL && sdyn != NULL);
2807 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2808 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
2809 for (; dyncon < dynconend; dyncon++)
2811 Elf_Internal_Dyn dyn;
2815 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2819 case DT_PLTGOT: name = ".plt"; size = false; break;
2820 case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
2821 case DT_JMPREL: name = ".rela.plt"; size = false; break;
2822 default: name = NULL; size = false; break;
2829 s = bfd_get_section_by_name (output_bfd, name);
2835 dyn.d_un.d_ptr = s->vma;
2838 if (s->_cooked_size != 0)
2839 dyn.d_un.d_val = s->_cooked_size;
2841 dyn.d_un.d_val = s->_raw_size;
2844 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2849 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
2850 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
2853 unsigned char *contents = sgot->contents;
2854 bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents);
2857 bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4);
2859 bfd_put_32 (output_bfd,
2860 sdyn->output_section->vma + sdyn->output_offset,
2863 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2869 /* The RELOCATE_SECTION function is called by the ELF backend linker
2870 to handle the relocations for a section.
2872 The relocs are always passed as Rela structures; if the section
2873 actually uses Rel structures, the r_addend field will always be
2876 This function is responsible for adjust the section contents as
2877 necessary, and (if using Rela relocs and generating a
2878 relocateable output file) adjusting the reloc addend as
2881 This function does not have to worry about setting the reloc
2882 address or the reloc symbol index.
2884 LOCAL_SYMS is a pointer to the swapped in local symbols.
2886 LOCAL_SECTIONS is an array giving the section in the input file
2887 corresponding to the st_shndx field of each local symbol.
2889 The global hash table entry for the global symbols can be found
2890 via elf_sym_hashes (input_bfd).
2892 When generating relocateable output, this function must handle
2893 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2894 going to be the section symbol corresponding to the output
2895 section, which means that the addend must be adjusted
2899 ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
2900 contents, relocs, local_syms, local_sections)
2902 struct bfd_link_info *info;
2904 asection *input_section;
2906 Elf_Internal_Rela *relocs;
2907 Elf_Internal_Sym *local_syms;
2908 asection **local_sections;
2910 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
2911 struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
2912 bfd *dynobj = elf_hash_table (info)->dynobj;
2913 elf_linker_section_t *sdata = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA) : NULL;
2914 elf_linker_section_t *sdata2 = (dynobj) ? elf_linker_section (dynobj, LINKER_SECTION_SDATA2) : NULL;
2915 Elf_Internal_Rela *rel = relocs;
2916 Elf_Internal_Rela *relend = relocs + input_section->reloc_count;
2917 asection *sreloc = NULL;
2920 bfd_vma *local_got_offsets;
2925 fprintf (stderr, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
2926 bfd_get_filename (input_bfd),
2927 bfd_section_name(input_bfd, input_section),
2928 (long) input_section->reloc_count,
2929 (info->relocateable) ? " (relocatable)" : "");
2932 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2933 /* Initialize howto table if needed. */
2934 ppc_elf_howto_init ();
2936 local_got_offsets = elf_local_got_offsets (input_bfd);
2941 splt = bfd_get_section_by_name (dynobj, ".plt");
2942 sgot = bfd_get_section_by_name (dynobj, ".got");
2945 for (; rel < relend; rel++)
2947 enum elf_ppc_reloc_type r_type = (enum elf_ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
2948 bfd_vma offset = rel->r_offset;
2949 bfd_vma addend = rel->r_addend;
2950 bfd_reloc_status_type r = bfd_reloc_other;
2951 Elf_Internal_Sym *sym = (Elf_Internal_Sym *) 0;
2952 asection *sec = (asection *) 0;
2953 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) 0;
2954 const char *sym_name = (const char *) 0;
2955 reloc_howto_type *howto;
2956 unsigned long r_symndx;
2958 int will_become_local;
2960 /* Unknown relocation handling */
2961 if ((unsigned) r_type >= (unsigned) R_PPC_max
2962 || !ppc_elf_howto_table[(int) r_type])
2964 (*_bfd_error_handler) (_("%s: unknown relocation type %d"),
2965 bfd_get_filename (input_bfd),
2968 bfd_set_error (bfd_error_bad_value);
2973 howto = ppc_elf_howto_table[(int) r_type];
2974 r_symndx = ELF32_R_SYM (rel->r_info);
2976 if (info->relocateable)
2978 /* This is a relocateable link. We don't have to change
2979 anything, unless the reloc is against a section symbol,
2980 in which case we have to adjust according to where the
2981 section symbol winds up in the output section. */
2982 if (r_symndx < symtab_hdr->sh_info)
2984 sym = local_syms + r_symndx;
2985 if ((unsigned) ELF_ST_TYPE (sym->st_info) == STT_SECTION)
2987 sec = local_sections[r_symndx];
2988 addend = rel->r_addend += sec->output_offset + sym->st_value;
2993 fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
3003 /* This is a final link. */
3004 if (r_symndx < symtab_hdr->sh_info)
3006 sym = local_syms + r_symndx;
3007 sec = local_sections[r_symndx];
3008 sym_name = "<local symbol>";
3010 relocation = (sec->output_section->vma
3011 + sec->output_offset
3013 /* Relocs to local symbols are always resolved. */
3014 will_become_local = 1;
3018 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3019 while (h->root.type == bfd_link_hash_indirect
3020 || h->root.type == bfd_link_hash_warning)
3021 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3022 sym_name = h->root.root.string;
3024 /* Can this relocation be resolved immediately? */
3025 will_become_local = SYMBOL_REFERENCES_LOCAL (info, h);
3027 if (h->root.type == bfd_link_hash_defined
3028 || h->root.type == bfd_link_hash_defweak)
3030 sec = h->root.u.def.section;
3031 if (((r_type == R_PPC_PLT32
3032 || r_type == R_PPC_PLTREL24)
3034 && h->plt.offset != (bfd_vma) -1)
3035 || (r_type == R_PPC_LOCAL24PC
3036 && sec->output_section == NULL)
3037 || ((r_type == R_PPC_GOT16
3038 || r_type == R_PPC_GOT16_LO
3039 || r_type == R_PPC_GOT16_HI
3040 || r_type == R_PPC_GOT16_HA)
3041 && elf_hash_table (info)->dynamic_sections_created
3042 && (! info->shared || ! will_become_local))
3044 && ! will_become_local
3045 && ((input_section->flags & SEC_ALLOC) != 0
3046 /* Testing SEC_DEBUGGING here may be wrong.
3047 It's here to avoid a crash when
3048 generating a shared library with DWARF
3049 debugging information. */
3050 || ((input_section->flags & SEC_DEBUGGING) != 0
3051 && (h->elf_link_hash_flags
3052 & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3053 && (r_type == R_PPC_ADDR32
3054 || r_type == R_PPC_ADDR24
3055 || r_type == R_PPC_ADDR16
3056 || r_type == R_PPC_ADDR16_LO
3057 || r_type == R_PPC_ADDR16_HI
3058 || r_type == R_PPC_ADDR16_HA
3059 || r_type == R_PPC_ADDR14
3060 || r_type == R_PPC_ADDR14_BRTAKEN
3061 || r_type == R_PPC_ADDR14_BRNTAKEN
3062 || r_type == R_PPC_COPY
3063 || r_type == R_PPC_GLOB_DAT
3064 || r_type == R_PPC_JMP_SLOT
3065 || r_type == R_PPC_UADDR32
3066 || r_type == R_PPC_UADDR16
3067 || r_type == R_PPC_SDAREL16
3068 || r_type == R_PPC_EMB_NADDR32
3069 || r_type == R_PPC_EMB_NADDR16
3070 || r_type == R_PPC_EMB_NADDR16_LO
3071 || r_type == R_PPC_EMB_NADDR16_HI
3072 || r_type == R_PPC_EMB_NADDR16_HA
3073 || r_type == R_PPC_EMB_SDAI16
3074 || r_type == R_PPC_EMB_SDA2I16
3075 || r_type == R_PPC_EMB_SDA2REL
3076 || r_type == R_PPC_EMB_SDA21
3077 || r_type == R_PPC_EMB_MRKREF
3078 || r_type == R_PPC_EMB_BIT_FLD
3079 || r_type == R_PPC_EMB_RELSDA
3080 || ((r_type == R_PPC_REL24
3081 || r_type == R_PPC_REL32
3082 || r_type == R_PPC_REL14
3083 || r_type == R_PPC_REL14_BRTAKEN
3084 || r_type == R_PPC_REL14_BRNTAKEN
3085 || r_type == R_PPC_RELATIVE)
3086 && strcmp (h->root.root.string,
3087 "_GLOBAL_OFFSET_TABLE_") != 0))))
3089 /* In these cases, we don't need the relocation
3090 value. We check specially because in some
3091 obscure cases sec->output_section will be NULL. */
3094 else if (sec->output_section == NULL)
3096 (*_bfd_error_handler)
3097 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
3098 bfd_get_filename (input_bfd), h->root.root.string,
3099 bfd_get_section_name (input_bfd, input_section));
3103 relocation = (h->root.u.def.value
3104 + sec->output_section->vma
3105 + sec->output_offset);
3107 else if (h->root.type == bfd_link_hash_undefweak)
3109 else if (info->shared
3110 && (!info->symbolic || info->allow_shlib_undefined)
3111 && !info->no_undefined
3112 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3116 if (! (*info->callbacks->undefined_symbol) (info,
3117 h->root.root.string,
3122 || info->no_undefined
3123 || ELF_ST_VISIBILITY (h->other))))
3129 switch ((int) r_type)
3132 (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"),
3133 bfd_get_filename (input_bfd),
3134 (int) r_type, sym_name);
3136 bfd_set_error (bfd_error_bad_value);
3140 /* Relocations that need no special processing. */
3141 case (int) R_PPC_LOCAL24PC:
3142 /* It makes no sense to point a local relocation
3143 at a symbol not in this object. */
3145 && (h->root.type == bfd_link_hash_defined
3146 || h->root.type == bfd_link_hash_defweak)
3147 && sec->output_section == NULL)
3149 if (! (*info->callbacks->undefined_symbol) (info,
3150 h->root.root.string,
3160 /* Relocations that may need to be propagated if this is a shared
3162 case (int) R_PPC_REL24:
3163 case (int) R_PPC_REL32:
3164 case (int) R_PPC_REL14:
3165 /* If these relocations are not to a named symbol, they can be
3166 handled right here, no need to bother the dynamic linker. */
3168 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3169 || SYMBOL_REFERENCES_LOCAL (info, h))
3173 /* Relocations that always need to be propagated if this is a shared
3175 case (int) R_PPC_NONE:
3176 case (int) R_PPC_ADDR32:
3177 case (int) R_PPC_ADDR24:
3178 case (int) R_PPC_ADDR16:
3179 case (int) R_PPC_ADDR16_LO:
3180 case (int) R_PPC_ADDR16_HI:
3181 case (int) R_PPC_ADDR16_HA:
3182 case (int) R_PPC_ADDR14:
3183 case (int) R_PPC_UADDR32:
3184 case (int) R_PPC_UADDR16:
3187 Elf_Internal_Rela outrel;
3191 fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n",
3192 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
3195 /* When generating a shared object, these relocations
3196 are copied into the output file to be resolved at run
3203 name = (bfd_elf_string_from_elf_section
3205 elf_elfheader (input_bfd)->e_shstrndx,
3206 elf_section_data (input_section)->rel_hdr.sh_name));
3210 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3211 && strcmp (bfd_get_section_name (input_bfd,
3215 sreloc = bfd_get_section_by_name (dynobj, name);
3216 BFD_ASSERT (sreloc != NULL);
3221 if (elf_section_data (input_section)->stab_info == NULL)
3222 outrel.r_offset = rel->r_offset;
3227 off = (_bfd_stab_section_offset
3228 (output_bfd, &elf_hash_table (info)->stab_info,
3230 &elf_section_data (input_section)->stab_info,
3232 if (off == (bfd_vma) -1)
3234 outrel.r_offset = off;
3237 outrel.r_offset += (input_section->output_section->vma
3238 + input_section->output_offset);
3241 memset (&outrel, 0, sizeof outrel);
3242 /* h->dynindx may be -1 if this symbol was marked to
3244 else if (! will_become_local)
3246 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3247 outrel.r_addend = rel->r_addend;
3251 if (r_type == R_PPC_ADDR32)
3253 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
3254 outrel.r_addend = relocation + rel->r_addend;
3261 sec = local_sections[r_symndx];
3264 BFD_ASSERT (h->root.type == bfd_link_hash_defined
3266 == bfd_link_hash_defweak));
3267 sec = h->root.u.def.section;
3269 if (sec != NULL && bfd_is_abs_section (sec))
3271 else if (sec == NULL || sec->owner == NULL)
3273 bfd_set_error (bfd_error_bad_value);
3280 osec = sec->output_section;
3281 indx = elf_section_data (osec)->dynindx;
3282 BFD_ASSERT (indx > 0);
3286 printf ("indx=%d section=%s flags=%08x name=%s\n",
3287 indx, osec->name, osec->flags,
3288 h->root.root.string);
3293 outrel.r_info = ELF32_R_INFO (indx, r_type);
3294 outrel.r_addend = relocation + rel->r_addend;
3298 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3299 (((Elf32_External_Rela *)
3301 + sreloc->reloc_count));
3302 ++sreloc->reloc_count;
3304 /* This reloc will be computed at runtime, so there's no
3305 need to do anything now, unless this is a RELATIVE
3306 reloc in an unallocated section. */
3308 || (input_section->flags & SEC_ALLOC) != 0
3309 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)
3313 /* Arithmetic adjust relocations that aren't going into a
3315 if (r_type == R_PPC_ADDR16_HA
3316 /* It's just possible that this symbol is a weak symbol
3317 that's not actually defined anywhere. In that case,
3318 'sec' would be NULL, and we should leave the symbol
3319 alone (it will be set to zero elsewhere in the link). */
3322 addend += ((relocation + addend) & 0x8000) << 1;
3326 /* branch taken prediction relocations */
3327 case (int) R_PPC_ADDR14_BRTAKEN:
3328 case (int) R_PPC_REL14_BRTAKEN:
3329 insn = bfd_get_32 (output_bfd, contents + offset);
3330 if ((relocation - offset) & 0x8000)
3331 insn &= ~BRANCH_PREDICT_BIT;
3333 insn |= BRANCH_PREDICT_BIT;
3334 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3337 /* branch not taken predicition relocations */
3338 case (int) R_PPC_ADDR14_BRNTAKEN:
3339 case (int) R_PPC_REL14_BRNTAKEN:
3340 insn = bfd_get_32 (output_bfd, contents + offset);
3341 if ((relocation - offset) & 0x8000)
3342 insn |= BRANCH_PREDICT_BIT;
3344 insn &= ~BRANCH_PREDICT_BIT;
3345 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3348 /* GOT16 relocations */
3349 case (int) R_PPC_GOT16:
3350 case (int) R_PPC_GOT16_LO:
3351 case (int) R_PPC_GOT16_HI:
3352 case (int) R_PPC_GOT16_HA:
3353 /* Relocation is to the entry for this symbol in the global
3355 BFD_ASSERT (sgot != NULL);
3361 off = h->got.offset;
3362 BFD_ASSERT (off != (bfd_vma) -1);
3364 if (! elf_hash_table (info)->dynamic_sections_created
3366 && SYMBOL_REFERENCES_LOCAL (info, h)))
3368 /* This is actually a static link, or it is a
3369 -Bsymbolic link and the symbol is defined
3370 locally. We must initialize this entry in the
3371 global offset table. Since the offset must
3372 always be a multiple of 4, we use the least
3373 significant bit to record whether we have
3374 initialized it already.
3376 When doing a dynamic link, we create a .rela.got
3377 relocation entry to initialize the value. This
3378 is done in the finish_dynamic_symbol routine. */
3383 bfd_put_32 (output_bfd, relocation,
3384 sgot->contents + off);
3389 relocation = sgot->output_offset + off - 4;
3395 BFD_ASSERT (local_got_offsets != NULL
3396 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3398 off = local_got_offsets[r_symndx];
3400 /* The offset must always be a multiple of 4. We use
3401 the least significant bit to record whether we have
3402 already processed this entry. */
3407 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3412 Elf_Internal_Rela outrel;
3414 /* We need to generate a R_PPC_RELATIVE reloc
3415 for the dynamic linker. */
3416 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3417 BFD_ASSERT (srelgot != NULL);
3419 outrel.r_offset = (sgot->output_section->vma
3420 + sgot->output_offset
3422 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
3423 outrel.r_addend = relocation;
3424 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3425 (((Elf32_External_Rela *)
3427 + srelgot->reloc_count));
3428 ++srelgot->reloc_count;
3431 local_got_offsets[r_symndx] |= 1;
3434 relocation = sgot->output_offset + off - 4;
3438 /* Indirect .sdata relocation */
3439 case (int) R_PPC_EMB_SDAI16:
3440 BFD_ASSERT (sdata != NULL);
3441 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
3442 sdata, h, relocation, rel,
3446 /* Indirect .sdata2 relocation */
3447 case (int) R_PPC_EMB_SDA2I16:
3448 BFD_ASSERT (sdata2 != NULL);
3449 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
3450 sdata2, h, relocation, rel,
3454 /* Handle the TOC16 reloc. We want to use the offset within the .got
3455 section, not the actual VMA. This is appropriate when generating
3456 an embedded ELF object, for which the .got section acts like the
3457 AIX .toc section. */
3458 case (int) R_PPC_TOC16: /* phony GOT16 relocations */
3459 BFD_ASSERT (sec != (asection *) 0);
3460 BFD_ASSERT (bfd_is_und_section (sec)
3461 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
3462 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
3464 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
3467 case (int) R_PPC_PLTREL24:
3468 /* Relocation is to the entry for this symbol in the
3469 procedure linkage table. */
3470 BFD_ASSERT (h != NULL);
3472 if (h->plt.offset == (bfd_vma) -1
3475 /* We didn't make a PLT entry for this symbol. This
3476 happens when statically linking PIC code, or when
3477 using -Bsymbolic. */
3481 relocation = (splt->output_section->vma
3482 + splt->output_offset
3486 /* relocate against _SDA_BASE_ */
3487 case (int) R_PPC_SDAREL16:
3491 BFD_ASSERT (sec != (asection *) 0);
3492 name = bfd_get_section_name (abfd, sec->output_section);
3493 if (strcmp (name, ".sdata") != 0
3494 && strcmp (name, ".sbss") != 0)
3496 (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
3497 bfd_get_filename (input_bfd),
3499 ppc_elf_howto_table[(int) r_type]->name,
3502 addend -= (sdata->sym_hash->root.u.def.value
3503 + sdata->sym_hash->root.u.def.section->output_section->vma
3504 + sdata->sym_hash->root.u.def.section->output_offset);
3508 /* relocate against _SDA2_BASE_ */
3509 case (int) R_PPC_EMB_SDA2REL:
3513 BFD_ASSERT (sec != (asection *) 0);
3514 name = bfd_get_section_name (abfd, sec->output_section);
3515 if (strcmp (name, ".sdata2") != 0 && strcmp (name, ".sbss2") != 0)
3517 (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
3518 bfd_get_filename (input_bfd),
3520 ppc_elf_howto_table[(int) r_type]->name,
3523 bfd_set_error (bfd_error_bad_value);
3527 addend -= (sdata2->sym_hash->root.u.def.value
3528 + sdata2->sym_hash->root.u.def.section->output_section->vma
3529 + sdata2->sym_hash->root.u.def.section->output_offset);
3533 /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
3534 case (int) R_PPC_EMB_SDA21:
3535 case (int) R_PPC_EMB_RELSDA:
3540 BFD_ASSERT (sec != (asection *) 0);
3541 name = bfd_get_section_name (abfd, sec->output_section);
3542 if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
3545 addend -= (sdata->sym_hash->root.u.def.value
3546 + sdata->sym_hash->root.u.def.section->output_section->vma
3547 + sdata->sym_hash->root.u.def.section->output_offset);
3550 else if (strcmp (name, ".sdata2") == 0
3551 || strcmp (name, ".sbss2") == 0)
3554 addend -= (sdata2->sym_hash->root.u.def.value
3555 + sdata2->sym_hash->root.u.def.section->output_section->vma
3556 + sdata2->sym_hash->root.u.def.section->output_offset);
3559 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
3560 || strcmp (name, ".PPC.EMB.sbss0") == 0)
3567 (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
3568 bfd_get_filename (input_bfd),
3570 ppc_elf_howto_table[(int) r_type]->name,
3573 bfd_set_error (bfd_error_bad_value);
3578 if (r_type == R_PPC_EMB_SDA21)
3579 { /* fill in register field */
3580 insn = bfd_get_32 (output_bfd, contents + offset);
3581 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
3582 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3587 /* Relocate against the beginning of the section */
3588 case (int) R_PPC_SECTOFF:
3589 case (int) R_PPC_SECTOFF_LO:
3590 case (int) R_PPC_SECTOFF_HI:
3591 BFD_ASSERT (sec != (asection *) 0);
3592 addend -= sec->output_section->vma;
3595 case (int) R_PPC_SECTOFF_HA:
3596 BFD_ASSERT (sec != (asection *) 0);
3597 addend -= sec->output_section->vma;
3598 addend += ((relocation + addend) & 0x8000) << 1;
3601 /* Negative relocations */
3602 case (int) R_PPC_EMB_NADDR32:
3603 case (int) R_PPC_EMB_NADDR16:
3604 case (int) R_PPC_EMB_NADDR16_LO:
3605 case (int) R_PPC_EMB_NADDR16_HI:
3606 addend -= 2 * relocation;
3609 case (int) R_PPC_EMB_NADDR16_HA:
3610 addend -= 2 * relocation;
3611 addend += ((relocation + addend) & 0x8000) << 1;
3614 /* NOP relocation that prevents garbage collecting linkers from omitting a
3616 case (int) R_PPC_EMB_MRKREF:
3619 case (int) R_PPC_COPY:
3620 case (int) R_PPC_GLOB_DAT:
3621 case (int) R_PPC_JMP_SLOT:
3622 case (int) R_PPC_RELATIVE:
3623 case (int) R_PPC_PLT32:
3624 case (int) R_PPC_PLTREL32:
3625 case (int) R_PPC_PLT16_LO:
3626 case (int) R_PPC_PLT16_HI:
3627 case (int) R_PPC_PLT16_HA:
3628 case (int) R_PPC_EMB_RELSEC16:
3629 case (int) R_PPC_EMB_RELST_LO:
3630 case (int) R_PPC_EMB_RELST_HI:
3631 case (int) R_PPC_EMB_RELST_HA:
3632 case (int) R_PPC_EMB_BIT_FLD:
3633 (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."),
3634 bfd_get_filename (input_bfd),
3635 ppc_elf_howto_table[(int) r_type]->name,
3638 bfd_set_error (bfd_error_invalid_operation);
3642 case (int) R_PPC_GNU_VTINHERIT:
3643 case (int) R_PPC_GNU_VTENTRY:
3644 /* These are no-ops in the end. */
3649 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
3658 r = _bfd_final_link_relocate (howto,
3666 if (r == bfd_reloc_ok)
3668 else if (r == bfd_reloc_overflow)
3674 if (h->root.type == bfd_link_hash_undefweak
3675 && howto->pc_relative)
3677 /* Assume this is a call protected by other code that
3678 detect the symbol is undefined. If this is the case,
3679 we can safely ignore the overflow. If not, the
3680 program is hosed anyway, and a little warning isn't
3686 name = h->root.root.string;
3690 name = bfd_elf_string_from_elf_section (input_bfd,
3691 symtab_hdr->sh_link,
3696 name = bfd_section_name (input_bfd, sec);
3699 if (! (*info->callbacks->reloc_overflow) (info,
3713 fprintf (stderr, "\n");
3719 static enum elf_reloc_type_class
3720 ppc_elf_reloc_type_class (type)
3725 case R_PPC_RELATIVE:
3726 return reloc_class_relative;
3729 case R_PPC_JMP_SLOT:
3730 return reloc_class_plt;
3732 return reloc_class_copy;
3734 return reloc_class_normal;
3738 /* Support for core dump NOTE sections */
3740 ppc_elf_grok_prstatus (abfd, note)
3742 Elf_Internal_Note *note;
3745 unsigned int raw_size;
3747 switch (note->descsz)
3752 case 268: /* Linux/PPC */
3754 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3757 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3766 /* Make a ".reg/999" section. */
3767 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3768 raw_size, note->descpos + offset);
3772 ppc_elf_grok_psinfo (abfd, note)
3774 Elf_Internal_Note *note;
3776 switch (note->descsz)
3781 case 128: /* Linux/PPC elf_prpsinfo */
3782 elf_tdata (abfd)->core_program
3783 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
3784 elf_tdata (abfd)->core_command
3785 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
3788 /* Note that for some reason, a spurious space is tacked
3789 onto the end of the args in some (at least one anyway)
3790 implementations, so strip it off if it exists. */
3793 char *command = elf_tdata (abfd)->core_command;
3794 int n = strlen (command);
3796 if (0 < n && command[n - 1] == ' ')
3797 command[n - 1] = '\0';
3803 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
3804 #define TARGET_LITTLE_NAME "elf32-powerpcle"
3805 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
3806 #define TARGET_BIG_NAME "elf32-powerpc"
3807 #define ELF_ARCH bfd_arch_powerpc
3808 #define ELF_MACHINE_CODE EM_PPC
3809 #define ELF_MAXPAGESIZE 0x10000
3810 #define elf_info_to_howto ppc_elf_info_to_howto
3812 #ifdef EM_CYGNUS_POWERPC
3813 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3817 #define ELF_MACHINE_ALT2 EM_PPC_OLD
3820 #define elf_backend_plt_not_loaded 1
3821 #define elf_backend_got_symbol_offset 4
3822 #define elf_backend_can_gc_sections 1
3823 #define elf_backend_got_header_size 12
3824 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
3826 #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
3827 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
3828 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
3829 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
3830 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
3831 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
3833 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
3834 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
3835 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
3836 #define elf_backend_relocate_section ppc_elf_relocate_section
3837 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
3838 #define elf_backend_check_relocs ppc_elf_check_relocs
3839 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
3840 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
3841 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
3842 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
3843 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
3844 #define elf_backend_fake_sections ppc_elf_fake_sections
3845 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
3846 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
3847 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
3848 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
3849 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
3851 #include "elf32-target.h"