1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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_merge_private_bfd_data PARAMS ((bfd *, bfd *));
49 static int ppc_elf_additional_program_headers PARAMS ((bfd *));
50 static boolean ppc_elf_modify_segment_map PARAMS ((bfd *));
52 static asection *ppc_elf_create_got
53 PARAMS ((bfd *, struct bfd_link_info *));
54 static boolean ppc_elf_create_dynamic_sections
55 PARAMS ((bfd *, struct bfd_link_info *));
57 static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
58 Elf32_Internal_Shdr *,
60 static boolean ppc_elf_fake_sections
61 PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *));
63 static elf_linker_section_t *ppc_elf_create_linker_section
65 struct bfd_link_info *info,
66 enum elf_linker_section_enum));
68 static boolean ppc_elf_check_relocs PARAMS ((bfd *,
69 struct bfd_link_info *,
71 const Elf_Internal_Rela *));
73 static asection * ppc_elf_gc_mark_hook PARAMS ((bfd *abfd,
74 struct bfd_link_info *info,
75 Elf_Internal_Rela *rel,
76 struct elf_link_hash_entry *h,
77 Elf_Internal_Sym *sym));
79 static boolean ppc_elf_gc_sweep_hook PARAMS ((bfd *abfd,
80 struct bfd_link_info *info,
82 const Elf_Internal_Rela *relocs));
84 static boolean ppc_elf_adjust_dynamic_symbol PARAMS ((struct bfd_link_info *,
85 struct elf_link_hash_entry *));
87 static boolean ppc_elf_size_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
89 static boolean ppc_elf_relocate_section PARAMS ((bfd *,
90 struct bfd_link_info *info,
94 Elf_Internal_Rela *relocs,
95 Elf_Internal_Sym *local_syms,
98 static boolean ppc_elf_add_symbol_hook PARAMS ((bfd *,
99 struct bfd_link_info *,
100 const Elf_Internal_Sym *,
106 static boolean ppc_elf_finish_dynamic_symbol PARAMS ((bfd *,
107 struct bfd_link_info *,
108 struct elf_link_hash_entry *,
109 Elf_Internal_Sym *));
111 static boolean ppc_elf_finish_dynamic_sections PARAMS ((bfd *, struct bfd_link_info *));
112 static enum elf_reloc_type_class ppc_elf_reloc_type_class
113 PARAMS ((const Elf_Internal_Rela *));
114 static boolean ppc_elf_grok_prstatus
115 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
116 static boolean ppc_elf_grok_psinfo
117 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
119 #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
120 #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
121 #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
123 /* The name of the dynamic interpreter. This is put in the .interp
126 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
128 /* The size in bytes of an entry in the procedure linkage table. */
129 #define PLT_ENTRY_SIZE 12
130 /* The initial size of the plt reserved for the dynamic linker. */
131 #define PLT_INITIAL_ENTRY_SIZE 72
132 /* The size of the gap between entries in the PLT. */
133 #define PLT_SLOT_SIZE 8
134 /* The number of single-slot PLT entries (the rest use two slots). */
135 #define PLT_NUM_SINGLE_ENTRIES 8192
137 /* Will references to this symbol always reference the symbol
139 #define SYMBOL_REFERENCES_LOCAL(INFO, H) \
142 || H->dynindx == -1 \
143 || ELF_ST_VISIBILITY (H->other) == STV_INTERNAL \
144 || ELF_ST_VISIBILITY (H->other) == STV_HIDDEN) \
145 && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
147 /* Will _calls_ to this symbol always call the version in this object? */
148 #define SYMBOL_CALLS_LOCAL(INFO, H) \
151 || H->dynindx == -1 \
152 || ELF_ST_VISIBILITY (H->other) != STV_DEFAULT) \
153 && (H->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0)
155 static reloc_howto_type *ppc_elf_howto_table[(int) R_PPC_max];
157 static reloc_howto_type ppc_elf_howto_raw[] = {
158 /* This reloc does nothing. */
159 HOWTO (R_PPC_NONE, /* type */
161 2, /* size (0 = byte, 1 = short, 2 = long) */
163 false, /* pc_relative */
165 complain_overflow_bitfield, /* complain_on_overflow */
166 bfd_elf_generic_reloc, /* special_function */
167 "R_PPC_NONE", /* name */
168 false, /* partial_inplace */
171 false), /* pcrel_offset */
173 /* A standard 32 bit relocation. */
174 HOWTO (R_PPC_ADDR32, /* type */
176 2, /* size (0 = byte, 1 = short, 2 = long) */
178 false, /* pc_relative */
180 complain_overflow_bitfield, /* complain_on_overflow */
181 bfd_elf_generic_reloc, /* special_function */
182 "R_PPC_ADDR32", /* name */
183 false, /* partial_inplace */
185 0xffffffff, /* dst_mask */
186 false), /* pcrel_offset */
188 /* An absolute 26 bit branch; the lower two bits must be zero.
189 FIXME: we don't check that, we just clear them. */
190 HOWTO (R_PPC_ADDR24, /* type */
192 2, /* size (0 = byte, 1 = short, 2 = long) */
194 false, /* pc_relative */
196 complain_overflow_bitfield, /* complain_on_overflow */
197 bfd_elf_generic_reloc, /* special_function */
198 "R_PPC_ADDR24", /* name */
199 false, /* partial_inplace */
201 0x3fffffc, /* dst_mask */
202 false), /* pcrel_offset */
204 /* A standard 16 bit relocation. */
205 HOWTO (R_PPC_ADDR16, /* type */
207 1, /* size (0 = byte, 1 = short, 2 = long) */
209 false, /* pc_relative */
211 complain_overflow_bitfield, /* complain_on_overflow */
212 bfd_elf_generic_reloc, /* special_function */
213 "R_PPC_ADDR16", /* name */
214 false, /* partial_inplace */
216 0xffff, /* dst_mask */
217 false), /* pcrel_offset */
219 /* A 16 bit relocation without overflow. */
220 HOWTO (R_PPC_ADDR16_LO, /* type */
222 1, /* size (0 = byte, 1 = short, 2 = long) */
224 false, /* pc_relative */
226 complain_overflow_dont,/* complain_on_overflow */
227 bfd_elf_generic_reloc, /* special_function */
228 "R_PPC_ADDR16_LO", /* name */
229 false, /* partial_inplace */
231 0xffff, /* dst_mask */
232 false), /* pcrel_offset */
234 /* The high order 16 bits of an address. */
235 HOWTO (R_PPC_ADDR16_HI, /* type */
237 1, /* size (0 = byte, 1 = short, 2 = long) */
239 false, /* pc_relative */
241 complain_overflow_dont, /* complain_on_overflow */
242 bfd_elf_generic_reloc, /* special_function */
243 "R_PPC_ADDR16_HI", /* name */
244 false, /* partial_inplace */
246 0xffff, /* dst_mask */
247 false), /* pcrel_offset */
249 /* The high order 16 bits of an address, plus 1 if the contents of
250 the low 16 bits, treated as a signed number, is negative. */
251 HOWTO (R_PPC_ADDR16_HA, /* type */
253 1, /* size (0 = byte, 1 = short, 2 = long) */
255 false, /* pc_relative */
257 complain_overflow_dont, /* complain_on_overflow */
258 ppc_elf_addr16_ha_reloc, /* special_function */
259 "R_PPC_ADDR16_HA", /* name */
260 false, /* partial_inplace */
262 0xffff, /* dst_mask */
263 false), /* pcrel_offset */
265 /* An absolute 16 bit branch; the lower two bits must be zero.
266 FIXME: we don't check that, we just clear them. */
267 HOWTO (R_PPC_ADDR14, /* type */
269 2, /* size (0 = byte, 1 = short, 2 = long) */
271 false, /* pc_relative */
273 complain_overflow_bitfield, /* complain_on_overflow */
274 bfd_elf_generic_reloc, /* special_function */
275 "R_PPC_ADDR14", /* name */
276 false, /* partial_inplace */
278 0xfffc, /* dst_mask */
279 false), /* pcrel_offset */
281 /* An absolute 16 bit branch, for which bit 10 should be set to
282 indicate that the branch is expected to be taken. The lower two
283 bits must be zero. */
284 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
286 2, /* size (0 = byte, 1 = short, 2 = long) */
288 false, /* pc_relative */
290 complain_overflow_bitfield, /* complain_on_overflow */
291 bfd_elf_generic_reloc, /* special_function */
292 "R_PPC_ADDR14_BRTAKEN",/* name */
293 false, /* partial_inplace */
295 0xfffc, /* dst_mask */
296 false), /* pcrel_offset */
298 /* An absolute 16 bit branch, for which bit 10 should be set to
299 indicate that the branch is not expected to be taken. The lower
300 two bits must be zero. */
301 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
303 2, /* size (0 = byte, 1 = short, 2 = long) */
305 false, /* pc_relative */
307 complain_overflow_bitfield, /* complain_on_overflow */
308 bfd_elf_generic_reloc, /* special_function */
309 "R_PPC_ADDR14_BRNTAKEN",/* name */
310 false, /* partial_inplace */
312 0xfffc, /* dst_mask */
313 false), /* pcrel_offset */
315 /* A relative 26 bit branch; the lower two bits must be zero. */
316 HOWTO (R_PPC_REL24, /* type */
318 2, /* size (0 = byte, 1 = short, 2 = long) */
320 true, /* pc_relative */
322 complain_overflow_signed, /* complain_on_overflow */
323 bfd_elf_generic_reloc, /* special_function */
324 "R_PPC_REL24", /* name */
325 false, /* partial_inplace */
327 0x3fffffc, /* dst_mask */
328 true), /* pcrel_offset */
330 /* A relative 16 bit branch; the lower two bits must be zero. */
331 HOWTO (R_PPC_REL14, /* type */
333 2, /* size (0 = byte, 1 = short, 2 = long) */
335 true, /* pc_relative */
337 complain_overflow_signed, /* complain_on_overflow */
338 bfd_elf_generic_reloc, /* special_function */
339 "R_PPC_REL14", /* name */
340 false, /* partial_inplace */
342 0xfffc, /* dst_mask */
343 true), /* pcrel_offset */
345 /* A relative 16 bit branch. Bit 10 should be set to indicate that
346 the branch is expected to be taken. The lower two bits must be
348 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
350 2, /* size (0 = byte, 1 = short, 2 = long) */
352 true, /* pc_relative */
354 complain_overflow_signed, /* complain_on_overflow */
355 bfd_elf_generic_reloc, /* special_function */
356 "R_PPC_REL14_BRTAKEN", /* name */
357 false, /* partial_inplace */
359 0xfffc, /* dst_mask */
360 true), /* pcrel_offset */
362 /* A relative 16 bit branch. Bit 10 should be set to indicate that
363 the branch is not expected to be taken. The lower two bits must
365 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
367 2, /* size (0 = byte, 1 = short, 2 = long) */
369 true, /* pc_relative */
371 complain_overflow_signed, /* complain_on_overflow */
372 bfd_elf_generic_reloc, /* special_function */
373 "R_PPC_REL14_BRNTAKEN",/* name */
374 false, /* partial_inplace */
376 0xfffc, /* dst_mask */
377 true), /* pcrel_offset */
379 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
381 HOWTO (R_PPC_GOT16, /* type */
383 1, /* size (0 = byte, 1 = short, 2 = long) */
385 false, /* pc_relative */
387 complain_overflow_signed, /* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_PPC_GOT16", /* name */
390 false, /* partial_inplace */
392 0xffff, /* dst_mask */
393 false), /* pcrel_offset */
395 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
397 HOWTO (R_PPC_GOT16_LO, /* type */
399 1, /* size (0 = byte, 1 = short, 2 = long) */
401 false, /* pc_relative */
403 complain_overflow_dont, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
405 "R_PPC_GOT16_LO", /* name */
406 false, /* partial_inplace */
408 0xffff, /* dst_mask */
409 false), /* pcrel_offset */
411 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
413 HOWTO (R_PPC_GOT16_HI, /* type */
415 1, /* size (0 = byte, 1 = short, 2 = long) */
417 false, /* pc_relative */
419 complain_overflow_bitfield, /* complain_on_overflow */
420 bfd_elf_generic_reloc, /* special_function */
421 "R_PPC_GOT16_HI", /* name */
422 false, /* partial_inplace */
424 0xffff, /* dst_mask */
425 false), /* pcrel_offset */
427 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
429 HOWTO (R_PPC_GOT16_HA, /* type */
431 1, /* size (0 = byte, 1 = short, 2 = long) */
433 false, /* pc_relative */
435 complain_overflow_bitfield, /* complain_on_overflow */
436 ppc_elf_addr16_ha_reloc, /* special_function */
437 "R_PPC_GOT16_HA", /* name */
438 false, /* partial_inplace */
440 0xffff, /* dst_mask */
441 false), /* pcrel_offset */
443 /* Like R_PPC_REL24, but referring to the procedure linkage table
444 entry for the symbol. */
445 HOWTO (R_PPC_PLTREL24, /* type */
447 2, /* size (0 = byte, 1 = short, 2 = long) */
449 true, /* pc_relative */
451 complain_overflow_signed, /* complain_on_overflow */
452 bfd_elf_generic_reloc, /* special_function */
453 "R_PPC_PLTREL24", /* name */
454 false, /* partial_inplace */
456 0x3fffffc, /* dst_mask */
457 true), /* pcrel_offset */
459 /* This is used only by the dynamic linker. The symbol should exist
460 both in the object being run and in some shared library. The
461 dynamic linker copies the data addressed by the symbol from the
462 shared library into the object, because the object being
463 run has to have the data at some particular address. */
464 HOWTO (R_PPC_COPY, /* type */
466 2, /* size (0 = byte, 1 = short, 2 = long) */
468 false, /* pc_relative */
470 complain_overflow_bitfield, /* complain_on_overflow */
471 bfd_elf_generic_reloc, /* special_function */
472 "R_PPC_COPY", /* name */
473 false, /* partial_inplace */
476 false), /* pcrel_offset */
478 /* Like R_PPC_ADDR32, but used when setting global offset table
480 HOWTO (R_PPC_GLOB_DAT, /* type */
482 2, /* size (0 = byte, 1 = short, 2 = long) */
484 false, /* pc_relative */
486 complain_overflow_bitfield, /* complain_on_overflow */
487 bfd_elf_generic_reloc, /* special_function */
488 "R_PPC_GLOB_DAT", /* name */
489 false, /* partial_inplace */
491 0xffffffff, /* dst_mask */
492 false), /* pcrel_offset */
494 /* Marks a procedure linkage table entry for a symbol. */
495 HOWTO (R_PPC_JMP_SLOT, /* type */
497 2, /* size (0 = byte, 1 = short, 2 = long) */
499 false, /* pc_relative */
501 complain_overflow_bitfield, /* complain_on_overflow */
502 bfd_elf_generic_reloc, /* special_function */
503 "R_PPC_JMP_SLOT", /* name */
504 false, /* partial_inplace */
507 false), /* pcrel_offset */
509 /* Used only by the dynamic linker. When the object is run, this
510 longword is set to the load address of the object, plus the
512 HOWTO (R_PPC_RELATIVE, /* type */
514 2, /* size (0 = byte, 1 = short, 2 = long) */
516 false, /* pc_relative */
518 complain_overflow_bitfield, /* complain_on_overflow */
519 bfd_elf_generic_reloc, /* special_function */
520 "R_PPC_RELATIVE", /* name */
521 false, /* partial_inplace */
523 0xffffffff, /* dst_mask */
524 false), /* pcrel_offset */
526 /* Like R_PPC_REL24, but uses the value of the symbol within the
527 object rather than the final value. Normally used for
528 _GLOBAL_OFFSET_TABLE_. */
529 HOWTO (R_PPC_LOCAL24PC, /* type */
531 2, /* size (0 = byte, 1 = short, 2 = long) */
533 true, /* pc_relative */
535 complain_overflow_signed, /* complain_on_overflow */
536 bfd_elf_generic_reloc, /* special_function */
537 "R_PPC_LOCAL24PC", /* name */
538 false, /* partial_inplace */
540 0x3fffffc, /* dst_mask */
541 true), /* pcrel_offset */
543 /* Like R_PPC_ADDR32, but may be unaligned. */
544 HOWTO (R_PPC_UADDR32, /* type */
546 2, /* size (0 = byte, 1 = short, 2 = long) */
548 false, /* pc_relative */
550 complain_overflow_bitfield, /* complain_on_overflow */
551 bfd_elf_generic_reloc, /* special_function */
552 "R_PPC_UADDR32", /* name */
553 false, /* partial_inplace */
555 0xffffffff, /* dst_mask */
556 false), /* pcrel_offset */
558 /* Like R_PPC_ADDR16, but may be unaligned. */
559 HOWTO (R_PPC_UADDR16, /* type */
561 1, /* size (0 = byte, 1 = short, 2 = long) */
563 false, /* pc_relative */
565 complain_overflow_bitfield, /* complain_on_overflow */
566 bfd_elf_generic_reloc, /* special_function */
567 "R_PPC_UADDR16", /* name */
568 false, /* partial_inplace */
570 0xffff, /* dst_mask */
571 false), /* pcrel_offset */
573 /* 32-bit PC relative */
574 HOWTO (R_PPC_REL32, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 true, /* pc_relative */
580 complain_overflow_bitfield, /* complain_on_overflow */
581 bfd_elf_generic_reloc, /* special_function */
582 "R_PPC_REL32", /* name */
583 false, /* partial_inplace */
585 0xffffffff, /* dst_mask */
586 true), /* pcrel_offset */
588 /* 32-bit relocation to the symbol's procedure linkage table.
589 FIXME: not supported. */
590 HOWTO (R_PPC_PLT32, /* type */
592 2, /* size (0 = byte, 1 = short, 2 = long) */
594 false, /* pc_relative */
596 complain_overflow_bitfield, /* complain_on_overflow */
597 bfd_elf_generic_reloc, /* special_function */
598 "R_PPC_PLT32", /* name */
599 false, /* partial_inplace */
602 false), /* pcrel_offset */
604 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
605 FIXME: not supported. */
606 HOWTO (R_PPC_PLTREL32, /* type */
608 2, /* size (0 = byte, 1 = short, 2 = long) */
610 true, /* pc_relative */
612 complain_overflow_bitfield, /* complain_on_overflow */
613 bfd_elf_generic_reloc, /* special_function */
614 "R_PPC_PLTREL32", /* name */
615 false, /* partial_inplace */
618 true), /* pcrel_offset */
620 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
622 HOWTO (R_PPC_PLT16_LO, /* type */
624 1, /* size (0 = byte, 1 = short, 2 = long) */
626 false, /* pc_relative */
628 complain_overflow_dont, /* complain_on_overflow */
629 bfd_elf_generic_reloc, /* special_function */
630 "R_PPC_PLT16_LO", /* name */
631 false, /* partial_inplace */
633 0xffff, /* dst_mask */
634 false), /* pcrel_offset */
636 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
638 HOWTO (R_PPC_PLT16_HI, /* type */
640 1, /* size (0 = byte, 1 = short, 2 = long) */
642 false, /* pc_relative */
644 complain_overflow_bitfield, /* complain_on_overflow */
645 bfd_elf_generic_reloc, /* special_function */
646 "R_PPC_PLT16_HI", /* name */
647 false, /* partial_inplace */
649 0xffff, /* dst_mask */
650 false), /* pcrel_offset */
652 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
654 HOWTO (R_PPC_PLT16_HA, /* type */
656 1, /* size (0 = byte, 1 = short, 2 = long) */
658 false, /* pc_relative */
660 complain_overflow_bitfield, /* complain_on_overflow */
661 ppc_elf_addr16_ha_reloc, /* special_function */
662 "R_PPC_PLT16_HA", /* name */
663 false, /* partial_inplace */
665 0xffff, /* dst_mask */
666 false), /* pcrel_offset */
668 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
670 HOWTO (R_PPC_SDAREL16, /* type */
672 1, /* size (0 = byte, 1 = short, 2 = long) */
674 false, /* pc_relative */
676 complain_overflow_signed, /* complain_on_overflow */
677 bfd_elf_generic_reloc, /* special_function */
678 "R_PPC_SDAREL16", /* name */
679 false, /* partial_inplace */
681 0xffff, /* dst_mask */
682 false), /* pcrel_offset */
684 /* 16-bit section relative relocation. */
685 HOWTO (R_PPC_SECTOFF, /* type */
687 1, /* size (0 = byte, 1 = short, 2 = long) */
689 false, /* pc_relative */
691 complain_overflow_bitfield, /* complain_on_overflow */
692 bfd_elf_generic_reloc, /* special_function */
693 "R_PPC_SECTOFF", /* name */
694 false, /* partial_inplace */
696 0xffff, /* dst_mask */
697 false), /* pcrel_offset */
699 /* 16-bit lower half section relative relocation. */
700 HOWTO (R_PPC_SECTOFF_LO, /* type */
702 1, /* size (0 = byte, 1 = short, 2 = long) */
704 false, /* pc_relative */
706 complain_overflow_dont, /* complain_on_overflow */
707 bfd_elf_generic_reloc, /* special_function */
708 "R_PPC_SECTOFF_LO", /* name */
709 false, /* partial_inplace */
711 0xffff, /* dst_mask */
712 false), /* pcrel_offset */
714 /* 16-bit upper half section relative relocation. */
715 HOWTO (R_PPC_SECTOFF_HI, /* type */
717 1, /* size (0 = byte, 1 = short, 2 = long) */
719 false, /* pc_relative */
721 complain_overflow_bitfield, /* complain_on_overflow */
722 bfd_elf_generic_reloc, /* special_function */
723 "R_PPC_SECTOFF_HI", /* name */
724 false, /* partial_inplace */
726 0xffff, /* dst_mask */
727 false), /* pcrel_offset */
729 /* 16-bit upper half adjusted section relative relocation. */
730 HOWTO (R_PPC_SECTOFF_HA, /* type */
732 1, /* size (0 = byte, 1 = short, 2 = long) */
734 false, /* pc_relative */
736 complain_overflow_bitfield, /* complain_on_overflow */
737 ppc_elf_addr16_ha_reloc, /* special_function */
738 "R_PPC_SECTOFF_HA", /* name */
739 false, /* partial_inplace */
741 0xffff, /* dst_mask */
742 false), /* pcrel_offset */
744 /* The remaining relocs are from the Embedded ELF ABI, and are not
745 in the SVR4 ELF ABI. */
747 /* 32 bit value resulting from the addend minus the symbol */
748 HOWTO (R_PPC_EMB_NADDR32, /* type */
750 2, /* size (0 = byte, 1 = short, 2 = long) */
752 false, /* pc_relative */
754 complain_overflow_bitfield, /* complain_on_overflow */
755 bfd_elf_generic_reloc, /* special_function */
756 "R_PPC_EMB_NADDR32", /* name */
757 false, /* partial_inplace */
759 0xffffffff, /* dst_mask */
760 false), /* pcrel_offset */
762 /* 16 bit value resulting from the addend minus the symbol */
763 HOWTO (R_PPC_EMB_NADDR16, /* type */
765 1, /* size (0 = byte, 1 = short, 2 = long) */
767 false, /* pc_relative */
769 complain_overflow_bitfield, /* complain_on_overflow */
770 bfd_elf_generic_reloc, /* special_function */
771 "R_PPC_EMB_NADDR16", /* name */
772 false, /* partial_inplace */
774 0xffff, /* dst_mask */
775 false), /* pcrel_offset */
777 /* 16 bit value resulting from the addend minus the symbol */
778 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
780 1, /* size (0 = byte, 1 = short, 2 = long) */
782 false, /* pc_relative */
784 complain_overflow_dont,/* complain_on_overflow */
785 bfd_elf_generic_reloc, /* special_function */
786 "R_PPC_EMB_ADDR16_LO", /* name */
787 false, /* partial_inplace */
789 0xffff, /* dst_mask */
790 false), /* pcrel_offset */
792 /* The high order 16 bits of the addend minus the symbol */
793 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
795 1, /* size (0 = byte, 1 = short, 2 = long) */
797 false, /* pc_relative */
799 complain_overflow_dont, /* complain_on_overflow */
800 bfd_elf_generic_reloc, /* special_function */
801 "R_PPC_EMB_NADDR16_HI", /* name */
802 false, /* partial_inplace */
804 0xffff, /* dst_mask */
805 false), /* pcrel_offset */
807 /* The high order 16 bits of the result of the addend minus the address,
808 plus 1 if the contents of the low 16 bits, treated as a signed number,
810 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
812 1, /* size (0 = byte, 1 = short, 2 = long) */
814 false, /* pc_relative */
816 complain_overflow_dont, /* complain_on_overflow */
817 ppc_elf_addr16_ha_reloc, /* special_function */
818 "R_PPC_EMB_NADDR16_HA", /* name */
819 false, /* partial_inplace */
821 0xffff, /* dst_mask */
822 false), /* pcrel_offset */
824 /* 16 bit value resulting from allocating a 4 byte word to hold an
825 address in the .sdata section, and returning the offset from
826 _SDA_BASE_ for that relocation */
827 HOWTO (R_PPC_EMB_SDAI16, /* type */
829 1, /* size (0 = byte, 1 = short, 2 = long) */
831 false, /* pc_relative */
833 complain_overflow_bitfield, /* complain_on_overflow */
834 bfd_elf_generic_reloc, /* special_function */
835 "R_PPC_EMB_SDAI16", /* name */
836 false, /* partial_inplace */
838 0xffff, /* dst_mask */
839 false), /* pcrel_offset */
841 /* 16 bit value resulting from allocating a 4 byte word to hold an
842 address in the .sdata2 section, and returning the offset from
843 _SDA2_BASE_ for that relocation */
844 HOWTO (R_PPC_EMB_SDA2I16, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 false, /* pc_relative */
850 complain_overflow_bitfield, /* complain_on_overflow */
851 bfd_elf_generic_reloc, /* special_function */
852 "R_PPC_EMB_SDA2I16", /* name */
853 false, /* partial_inplace */
855 0xffff, /* dst_mask */
856 false), /* pcrel_offset */
858 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
860 HOWTO (R_PPC_EMB_SDA2REL, /* type */
862 1, /* size (0 = byte, 1 = short, 2 = long) */
864 false, /* pc_relative */
866 complain_overflow_signed, /* complain_on_overflow */
867 bfd_elf_generic_reloc, /* special_function */
868 "R_PPC_EMB_SDA2REL", /* name */
869 false, /* partial_inplace */
871 0xffff, /* dst_mask */
872 false), /* pcrel_offset */
874 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
875 signed offset from the appropriate base, and filling in the register
876 field with the appropriate register (0, 2, or 13). */
877 HOWTO (R_PPC_EMB_SDA21, /* type */
879 2, /* size (0 = byte, 1 = short, 2 = long) */
881 false, /* pc_relative */
883 complain_overflow_signed, /* complain_on_overflow */
884 bfd_elf_generic_reloc, /* special_function */
885 "R_PPC_EMB_SDA21", /* name */
886 false, /* partial_inplace */
888 0xffff, /* dst_mask */
889 false), /* pcrel_offset */
891 /* Relocation not handled: R_PPC_EMB_MRKREF */
892 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
893 /* Relocation not handled: R_PPC_EMB_RELST_LO */
894 /* Relocation not handled: R_PPC_EMB_RELST_HI */
895 /* Relocation not handled: R_PPC_EMB_RELST_HA */
896 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
898 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
899 in the 16 bit signed offset from the appropriate base, and filling in the
900 register field with the appropriate register (0, 2, or 13). */
901 HOWTO (R_PPC_EMB_RELSDA, /* type */
903 1, /* size (0 = byte, 1 = short, 2 = long) */
905 true, /* pc_relative */
907 complain_overflow_signed, /* complain_on_overflow */
908 bfd_elf_generic_reloc, /* special_function */
909 "R_PPC_EMB_RELSDA", /* name */
910 false, /* partial_inplace */
912 0xffff, /* dst_mask */
913 false), /* pcrel_offset */
915 /* GNU extension to record C++ vtable hierarchy */
916 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
918 0, /* size (0 = byte, 1 = short, 2 = long) */
920 false, /* pc_relative */
922 complain_overflow_dont, /* complain_on_overflow */
923 NULL, /* special_function */
924 "R_PPC_GNU_VTINHERIT", /* name */
925 false, /* partial_inplace */
928 false), /* pcrel_offset */
930 /* GNU extension to record C++ vtable member usage */
931 HOWTO (R_PPC_GNU_VTENTRY, /* type */
933 0, /* size (0 = byte, 1 = short, 2 = long) */
935 false, /* pc_relative */
937 complain_overflow_dont, /* complain_on_overflow */
938 NULL, /* special_function */
939 "R_PPC_GNU_VTENTRY", /* name */
940 false, /* partial_inplace */
943 false), /* pcrel_offset */
945 /* Phony reloc to handle AIX style TOC entries */
946 HOWTO (R_PPC_TOC16, /* type */
948 1, /* size (0 = byte, 1 = short, 2 = long) */
950 false, /* pc_relative */
952 complain_overflow_signed, /* complain_on_overflow */
953 bfd_elf_generic_reloc, /* special_function */
954 "R_PPC_TOC16", /* name */
955 false, /* partial_inplace */
957 0xffff, /* dst_mask */
958 false), /* pcrel_offset */
961 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
964 ppc_elf_howto_init ()
966 unsigned int i, type;
968 for (i = 0; i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]); i++)
970 type = ppc_elf_howto_raw[i].type;
971 BFD_ASSERT (type < sizeof (ppc_elf_howto_table) / sizeof (ppc_elf_howto_table[0]));
972 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
976 /* This function handles relaxing for the PPC with option --mpc860c0[=<n>].
978 The MPC860, revision C0 or earlier contains a bug in the die.
979 If all of the following conditions are true, the next instruction
980 to be executed *may* be treated as a no-op.
981 1/ A forward branch is executed.
982 2/ The branch is predicted as not taken.
983 3/ The branch is taken.
984 4/ The branch is located in the last 5 words of a page.
985 (The EOP limit is 5 by default but may be specified as any value from 1-10.)
987 Our software solution is to detect these problematic branches in a
988 linker pass and modify them as follows:
989 1/ Unconditional branches - Since these are always predicted taken,
990 there is no problem and no action is required.
991 2/ Conditional backward branches - No problem, no action required.
992 3/ Conditional forward branches - Ensure that the "inverse prediction
993 bit" is set (ensure it is predicted taken).
994 4/ Conditional register branches - Ensure that the "y bit" is set
995 (ensure it is predicted taken).
998 /* Sort sections by address. */
1001 ppc_elf_sort_rela (arg1, arg2)
1005 const Elf_Internal_Rela **rela1 = (const Elf_Internal_Rela**) arg1;
1006 const Elf_Internal_Rela **rela2 = (const Elf_Internal_Rela**) arg2;
1008 /* Sort by offset. */
1009 return ((*rela1)->r_offset - (*rela2)->r_offset);
1013 ppc_elf_relax_section (abfd, isec, link_info, again)
1016 struct bfd_link_info *link_info;
1019 #define PAGESIZE 0x1000
1021 bfd_byte *contents = NULL;
1022 bfd_byte *free_contents = NULL;
1023 Elf_Internal_Rela *internal_relocs = NULL;
1024 Elf_Internal_Rela *free_relocs = NULL;
1025 Elf_Internal_Rela **rela_comb = NULL;
1026 int comb_curr, comb_count;
1028 /* We never have to do this more than once per input section. */
1031 /* If needed, initialize this section's cooked size. */
1032 if (isec->_cooked_size == 0)
1033 isec->_cooked_size = isec->_raw_size;
1035 /* We're only interested in text sections which overlap the
1036 troublesome area at the end of a page. */
1037 if (link_info->mpc860c0 && (isec->flags & SEC_CODE) && isec->_cooked_size)
1039 bfd_vma dot, end_page, end_section;
1040 boolean section_modified;
1042 /* Get the section contents. */
1043 /* Get cached copy if it exists. */
1044 if (elf_section_data (isec)->this_hdr.contents != NULL)
1045 contents = elf_section_data (isec)->this_hdr.contents;
1048 /* Go get them off disk. */
1049 contents = (bfd_byte *) bfd_malloc (isec->_raw_size);
1050 if (contents == NULL)
1052 free_contents = contents;
1054 if (! bfd_get_section_contents (abfd, isec, contents,
1055 (file_ptr) 0, isec->_raw_size))
1061 if (isec->reloc_count)
1066 /* Get a copy of the native relocations. */
1067 internal_relocs = _bfd_elf32_link_read_relocs (
1068 abfd, isec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
1069 link_info->keep_memory);
1070 if (internal_relocs == NULL)
1072 if (! link_info->keep_memory)
1073 free_relocs = internal_relocs;
1075 /* Setup a faster access method for the reloc info we need. */
1076 amt = isec->reloc_count;
1077 amt *= sizeof (Elf_Internal_Rela*);
1078 rela_comb = (Elf_Internal_Rela**) bfd_malloc (amt);
1079 if (rela_comb == NULL)
1081 for (n = 0; n < isec->reloc_count; ++n)
1085 r_type = ELF32_R_TYPE (internal_relocs[n].r_info);
1086 if (r_type < 0 || r_type >= (int) R_PPC_max)
1089 /* Prologue constants are sometimes present in the ".text"
1090 sections and they can be identified by their associated relocation.
1091 We don't want to process those words and some others which
1092 can also be identified by their relocations. However, not all
1093 conditional branches will have a relocation so we will
1094 only ignore words that 1) have a reloc, and 2) the reloc
1095 is not applicable to a conditional branch.
1096 The array rela_comb is built here for use in the EOP scan loop. */
1099 case R_PPC_ADDR14_BRNTAKEN: /* absolute, predicted not taken */
1100 case R_PPC_REL14: /* relative cond. br. */
1101 case R_PPC_REL14_BRNTAKEN: /* rel. cond. br., predicted not taken */
1102 /* We should check the instruction. */
1105 /* The word is not a conditional branch - ignore it. */
1106 rela_comb[comb_count++] = &internal_relocs[n];
1111 qsort (rela_comb, (size_t) comb_count, sizeof (int), ppc_elf_sort_rela);
1114 /* Enumerate each EOP region that overlaps this section. */
1115 end_section = isec->vma + isec->_cooked_size;
1116 dot = end_page = (isec->vma | (PAGESIZE - 1)) + 1;
1117 dot -= link_info->mpc860c0;
1118 section_modified = false;
1119 if (dot < isec->vma) /* Increment the start position if this section */
1120 dot = isec->vma; /* begins in the middle of its first EOP region. */
1123 dot += PAGESIZE, end_page += PAGESIZE)
1126 /* Check each word in this EOP region. */
1127 for (; dot < end_page; dot += 4)
1129 bfd_vma isec_offset;
1131 boolean skip, modified;
1133 /* Don't process this word if there is a relocation for it and
1134 the relocation indicates the word is not a conditional branch. */
1136 isec_offset = dot - isec->vma;
1137 for (; comb_curr<comb_count; ++comb_curr)
1141 r_offset = rela_comb[comb_curr]->r_offset;
1142 if (r_offset >= isec_offset)
1144 if (r_offset == isec_offset) skip = true;
1150 /* Check the current word for a problematic conditional branch. */
1151 #define BO0(insn) ((insn) & 0x02000000)
1152 #define BO2(insn) ((insn) & 0x00800000)
1153 #define BO4(insn) ((insn) & 0x00200000)
1154 insn = (unsigned long) bfd_get_32 (abfd, contents + isec_offset);
1156 if ((insn & 0xFc000000) == 0x40000000)
1158 /* Instruction is BCx */
1159 if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
1162 /* This branch is predicted as "normal".
1163 If this is a forward branch, it is problematic. */
1165 target = insn & 0x0000Fffc; /*extract*/
1166 target = (target ^ 0x8000) - 0x8000; /*sign extend*/
1167 if ((insn & 0x00000002) == 0)
1168 target += dot; /*convert to abs*/
1171 insn |= 0x00200000; /* set the prediction bit */
1176 else if ((insn & 0xFc00Fffe) == 0x4c000420)
1178 /* Instruction is BCCTRx */
1179 if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
1181 /* This branch is predicted as not-taken.
1182 If this is a forward branch, it is problematic.
1183 Since we can't tell statically if it will branch forward,
1184 always set the prediction bit. */
1185 insn |= 0x00200000; /* set the prediction bit */
1189 else if ((insn & 0xFc00Fffe) == 0x4c000020)
1191 /* Instruction is BCLRx */
1192 if ((!BO0(insn) || !BO2(insn)) && !BO4(insn))
1194 /* This branch is predicted as not-taken.
1195 If this is a forward branch, it is problematic.
1196 Since we can't tell statically if it will branch forward,
1197 always set the prediction bit. */
1198 insn |= 0x00200000; /* set the prediction bit */
1207 bfd_put_32 (abfd, (bfd_vma) insn, contents + isec_offset);
1208 section_modified = true;
1212 if (section_modified)
1214 elf_section_data (isec)->this_hdr.contents = contents;
1215 free_contents = NULL;
1219 if (rela_comb != NULL)
1225 if (free_relocs != NULL)
1231 if (free_contents != NULL)
1233 if (! link_info->keep_memory)
1234 free (free_contents);
1237 /* Cache the section contents for elf_link_input_bfd. */
1238 elf_section_data (isec)->this_hdr.contents = contents;
1240 free_contents = NULL;
1246 if (rela_comb != NULL)
1248 if (free_relocs != NULL)
1250 if (free_contents != NULL)
1251 free (free_contents);
1255 static reloc_howto_type *
1256 ppc_elf_reloc_type_lookup (abfd, code)
1257 bfd *abfd ATTRIBUTE_UNUSED;
1258 bfd_reloc_code_real_type code;
1260 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1262 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1263 /* Initialize howto table if needed. */
1264 ppc_elf_howto_init ();
1269 return (reloc_howto_type *) NULL;
1271 case BFD_RELOC_NONE: ppc_reloc = R_PPC_NONE; break;
1272 case BFD_RELOC_32: ppc_reloc = R_PPC_ADDR32; break;
1273 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC_ADDR24; break;
1274 case BFD_RELOC_16: ppc_reloc = R_PPC_ADDR16; break;
1275 case BFD_RELOC_LO16: ppc_reloc = R_PPC_ADDR16_LO; break;
1276 case BFD_RELOC_HI16: ppc_reloc = R_PPC_ADDR16_HI; break;
1277 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC_ADDR16_HA; break;
1278 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC_ADDR14; break;
1279 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC_ADDR14_BRTAKEN; break;
1280 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC_ADDR14_BRNTAKEN; break;
1281 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC_REL24; break;
1282 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC_REL14; break;
1283 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC_REL14_BRTAKEN; break;
1284 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC_REL14_BRNTAKEN; break;
1285 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC_GOT16; break;
1286 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC_GOT16_LO; break;
1287 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC_GOT16_HI; break;
1288 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC_GOT16_HA; break;
1289 case BFD_RELOC_24_PLT_PCREL: ppc_reloc = R_PPC_PLTREL24; break;
1290 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC_COPY; break;
1291 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC_GLOB_DAT; break;
1292 case BFD_RELOC_PPC_LOCAL24PC: ppc_reloc = R_PPC_LOCAL24PC; break;
1293 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC_REL32; break;
1294 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC_PLT32; break;
1295 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC_PLTREL32; break;
1296 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC_PLT16_LO; break;
1297 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC_PLT16_HI; break;
1298 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC_PLT16_HA; break;
1299 case BFD_RELOC_GPREL16: ppc_reloc = R_PPC_SDAREL16; break;
1300 case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC_SECTOFF; break;
1301 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC_SECTOFF_LO; break;
1302 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC_SECTOFF_HI; break;
1303 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC_SECTOFF_HA; break;
1304 case BFD_RELOC_CTOR: ppc_reloc = R_PPC_ADDR32; break;
1305 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC_TOC16; break;
1306 case BFD_RELOC_PPC_EMB_NADDR32: ppc_reloc = R_PPC_EMB_NADDR32; break;
1307 case BFD_RELOC_PPC_EMB_NADDR16: ppc_reloc = R_PPC_EMB_NADDR16; break;
1308 case BFD_RELOC_PPC_EMB_NADDR16_LO: ppc_reloc = R_PPC_EMB_NADDR16_LO; break;
1309 case BFD_RELOC_PPC_EMB_NADDR16_HI: ppc_reloc = R_PPC_EMB_NADDR16_HI; break;
1310 case BFD_RELOC_PPC_EMB_NADDR16_HA: ppc_reloc = R_PPC_EMB_NADDR16_HA; break;
1311 case BFD_RELOC_PPC_EMB_SDAI16: ppc_reloc = R_PPC_EMB_SDAI16; break;
1312 case BFD_RELOC_PPC_EMB_SDA2I16: ppc_reloc = R_PPC_EMB_SDA2I16; break;
1313 case BFD_RELOC_PPC_EMB_SDA2REL: ppc_reloc = R_PPC_EMB_SDA2REL; break;
1314 case BFD_RELOC_PPC_EMB_SDA21: ppc_reloc = R_PPC_EMB_SDA21; break;
1315 case BFD_RELOC_PPC_EMB_MRKREF: ppc_reloc = R_PPC_EMB_MRKREF; break;
1316 case BFD_RELOC_PPC_EMB_RELSEC16: ppc_reloc = R_PPC_EMB_RELSEC16; break;
1317 case BFD_RELOC_PPC_EMB_RELST_LO: ppc_reloc = R_PPC_EMB_RELST_LO; break;
1318 case BFD_RELOC_PPC_EMB_RELST_HI: ppc_reloc = R_PPC_EMB_RELST_HI; break;
1319 case BFD_RELOC_PPC_EMB_RELST_HA: ppc_reloc = R_PPC_EMB_RELST_HA; break;
1320 case BFD_RELOC_PPC_EMB_BIT_FLD: ppc_reloc = R_PPC_EMB_BIT_FLD; break;
1321 case BFD_RELOC_PPC_EMB_RELSDA: ppc_reloc = R_PPC_EMB_RELSDA; break;
1322 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC_GNU_VTINHERIT; break;
1323 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC_GNU_VTENTRY; break;
1326 return ppc_elf_howto_table[(int) ppc_reloc];
1329 /* Set the howto pointer for a PowerPC ELF reloc. */
1332 ppc_elf_info_to_howto (abfd, cache_ptr, dst)
1333 bfd *abfd ATTRIBUTE_UNUSED;
1335 Elf32_Internal_Rela *dst;
1337 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1338 /* Initialize howto table if needed. */
1339 ppc_elf_howto_init ();
1341 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1342 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1345 /* Handle the R_PPC_ADDR16_HA reloc. */
1347 static bfd_reloc_status_type
1348 ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
1349 output_bfd, error_message)
1350 bfd *abfd ATTRIBUTE_UNUSED;
1351 arelent *reloc_entry;
1353 PTR data ATTRIBUTE_UNUSED;
1354 asection *input_section;
1356 char **error_message ATTRIBUTE_UNUSED;
1360 if (output_bfd != NULL)
1362 reloc_entry->address += input_section->output_offset;
1363 return bfd_reloc_ok;
1366 if (reloc_entry->address > input_section->_cooked_size)
1367 return bfd_reloc_outofrange;
1369 if (bfd_is_com_section (symbol->section))
1372 relocation = symbol->value;
1374 relocation += symbol->section->output_section->vma;
1375 relocation += symbol->section->output_offset;
1376 relocation += reloc_entry->addend;
1378 reloc_entry->addend += (relocation & 0x8000) << 1;
1380 return bfd_reloc_continue;
1383 /* Function to set whether a module needs the -mrelocatable bit set. */
1386 ppc_elf_set_private_flags (abfd, flags)
1390 BFD_ASSERT (!elf_flags_init (abfd)
1391 || elf_elfheader (abfd)->e_flags == flags);
1393 elf_elfheader (abfd)->e_flags = flags;
1394 elf_flags_init (abfd) = true;
1398 /* Merge backend specific data from an object file to the output
1399 object file when linking */
1401 ppc_elf_merge_private_bfd_data (ibfd, obfd)
1409 /* Check if we have the same endianess */
1410 if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
1413 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
1414 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
1417 new_flags = elf_elfheader (ibfd)->e_flags;
1418 old_flags = elf_elfheader (obfd)->e_flags;
1419 if (!elf_flags_init (obfd)) /* First call, no flags set */
1421 elf_flags_init (obfd) = true;
1422 elf_elfheader (obfd)->e_flags = new_flags;
1425 else if (new_flags == old_flags) /* Compatible flags are ok */
1428 else /* Incompatible flags */
1430 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
1433 if ((new_flags & EF_PPC_RELOCATABLE) != 0
1434 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
1437 (*_bfd_error_handler)
1438 (_("%s: compiled with -mrelocatable and linked with modules compiled normally"),
1439 bfd_archive_filename (ibfd));
1441 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
1442 && (old_flags & EF_PPC_RELOCATABLE) != 0)
1445 (*_bfd_error_handler)
1446 (_("%s: compiled normally and linked with modules compiled with -mrelocatable"),
1447 bfd_archive_filename (ibfd));
1450 /* The output is -mrelocatable-lib iff both the input files are. */
1451 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
1452 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
1454 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
1455 but each input file is either -mrelocatable or -mrelocatable-lib. */
1456 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
1457 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
1458 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
1459 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
1461 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
1462 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
1464 new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1465 old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
1467 /* Warn about any other mismatches */
1468 if (new_flags != old_flags)
1471 (*_bfd_error_handler)
1472 (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
1473 bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags);
1478 bfd_set_error (bfd_error_bad_value);
1486 /* Handle a PowerPC specific section when reading an object file. This
1487 is called when elfcode.h finds a section with an unknown type. */
1490 ppc_elf_section_from_shdr (abfd, hdr, name)
1492 Elf32_Internal_Shdr *hdr;
1498 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name))
1501 newsect = hdr->bfd_section;
1502 flags = bfd_get_section_flags (abfd, newsect);
1503 if (hdr->sh_flags & SHF_EXCLUDE)
1504 flags |= SEC_EXCLUDE;
1506 if (hdr->sh_type == SHT_ORDERED)
1507 flags |= SEC_SORT_ENTRIES;
1509 bfd_set_section_flags (abfd, newsect, flags);
1513 /* Set up any other section flags and such that may be necessary. */
1516 ppc_elf_fake_sections (abfd, shdr, asect)
1517 bfd *abfd ATTRIBUTE_UNUSED;
1518 Elf32_Internal_Shdr *shdr;
1521 if ((asect->flags & SEC_EXCLUDE) != 0)
1522 shdr->sh_flags |= SHF_EXCLUDE;
1524 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1525 shdr->sh_type = SHT_ORDERED;
1530 /* Create a special linker section */
1531 static elf_linker_section_t *
1532 ppc_elf_create_linker_section (abfd, info, which)
1534 struct bfd_link_info *info;
1535 enum elf_linker_section_enum which;
1537 bfd *dynobj = elf_hash_table (info)->dynobj;
1538 elf_linker_section_t *lsect;
1540 /* Record the first bfd section that needs the special section */
1542 dynobj = elf_hash_table (info)->dynobj = abfd;
1544 /* If this is the first time, create the section */
1545 lsect = elf_linker_section (dynobj, which);
1548 elf_linker_section_t defaults;
1549 static elf_linker_section_t zero_section;
1551 defaults = zero_section;
1552 defaults.which = which;
1553 defaults.hole_written_p = false;
1554 defaults.alignment = 2;
1556 /* Both of these sections are (technically) created by the user
1557 putting data in them, so they shouldn't be marked
1560 The linker creates them so it has somewhere to attach their
1561 respective symbols. In fact, if they were empty it would
1562 be OK to leave the symbol set to 0 (or any random number), because
1563 the appropriate register should never be used. */
1564 defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
1570 (*_bfd_error_handler) (_("%s: Unknown special linker type %d"),
1571 bfd_get_filename (abfd),
1574 bfd_set_error (bfd_error_bad_value);
1575 return (elf_linker_section_t *) 0;
1577 case LINKER_SECTION_SDATA: /* .sdata/.sbss section */
1578 defaults.name = ".sdata";
1579 defaults.rel_name = ".rela.sdata";
1580 defaults.bss_name = ".sbss";
1581 defaults.sym_name = "_SDA_BASE_";
1582 defaults.sym_offset = 32768;
1585 case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */
1586 defaults.name = ".sdata2";
1587 defaults.rel_name = ".rela.sdata2";
1588 defaults.bss_name = ".sbss2";
1589 defaults.sym_name = "_SDA2_BASE_";
1590 defaults.sym_offset = 32768;
1591 defaults.flags |= SEC_READONLY;
1595 lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults);
1601 /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we
1602 need to bump up the number of section headers. */
1605 ppc_elf_additional_program_headers (abfd)
1613 s = bfd_get_section_by_name (abfd, ".interp");
1617 s = bfd_get_section_by_name (abfd, ".sbss2");
1618 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1621 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1622 if (s != NULL && (s->flags & SEC_LOAD) != 0 && s->_raw_size > 0)
1628 /* Modify the segment map if needed. */
1631 ppc_elf_modify_segment_map (abfd)
1632 bfd *abfd ATTRIBUTE_UNUSED;
1637 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
1640 ppc_elf_create_got (abfd, info)
1642 struct bfd_link_info *info;
1644 register asection *s;
1647 if (!_bfd_elf_create_got_section (abfd, info))
1650 s = bfd_get_section_by_name (abfd, ".got");
1654 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1655 | SEC_LINKER_CREATED);
1656 if (!bfd_set_section_flags (abfd, s, flags))
1661 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
1662 to output sections (just like _bfd_elf_create_dynamic_sections has
1663 to create .dynbss and .rela.bss). */
1666 ppc_elf_create_dynamic_sections (abfd, info)
1668 struct bfd_link_info *info;
1670 register asection *s;
1673 if (!ppc_elf_create_got (abfd, info))
1676 if (!_bfd_elf_create_dynamic_sections (abfd, info))
1679 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
1680 | SEC_LINKER_CREATED);
1682 s = bfd_make_section (abfd, ".dynsbss");
1684 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
1689 s = bfd_make_section (abfd, ".rela.sbss");
1691 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
1692 || ! bfd_set_section_alignment (abfd, s, 2))
1696 s = bfd_get_section_by_name (abfd, ".plt");
1700 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
1701 return bfd_set_section_flags (abfd, s, flags);
1704 /* Adjust a symbol defined by a dynamic object and referenced by a
1705 regular object. The current definition is in some section of the
1706 dynamic object, but we're not including those sections. We have to
1707 change the definition to something the rest of the link can
1711 ppc_elf_adjust_dynamic_symbol (info, h)
1712 struct bfd_link_info *info;
1713 struct elf_link_hash_entry *h;
1715 bfd *dynobj = elf_hash_table (info)->dynobj;
1717 unsigned int power_of_two;
1721 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n", h->root.root.string);
1724 /* Make sure we know what is going on here. */
1725 BFD_ASSERT (dynobj != NULL
1726 && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT)
1727 || h->weakdef != NULL
1728 || ((h->elf_link_hash_flags
1729 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
1730 && (h->elf_link_hash_flags
1731 & ELF_LINK_HASH_REF_REGULAR) != 0
1732 && (h->elf_link_hash_flags
1733 & ELF_LINK_HASH_DEF_REGULAR) == 0)));
1735 /* If this is a function, put it in the procedure linkage table. We
1736 will fill in the contents of the procedure linkage table later,
1737 when we know the address of the .got section. */
1738 if (h->type == STT_FUNC
1739 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
1741 if (! elf_hash_table (info)->dynamic_sections_created
1742 || SYMBOL_CALLS_LOCAL (info, h)
1743 || (info->shared && h->plt.refcount <= 0))
1745 /* A PLT entry is not required/allowed when:
1747 1. We are not using ld.so; because then the PLT entry
1748 can't be set up, so we can't use one.
1750 2. We know for certain that a call to this symbol
1751 will go to this object.
1753 3. GC has rendered the entry unused.
1754 Note, however, that in an executable all references to the
1755 symbol go to the PLT, so we can't turn it off in that case.
1756 ??? The correct thing to do here is to reference count
1757 all uses of the symbol, not just those to the GOT or PLT. */
1758 h->plt.offset = (bfd_vma) -1;
1759 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
1763 /* Make sure this symbol is output as a dynamic symbol. */
1764 if (h->dynindx == -1)
1766 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
1769 BFD_ASSERT (h->dynindx != -1);
1771 s = bfd_get_section_by_name (dynobj, ".plt");
1772 BFD_ASSERT (s != NULL);
1774 /* If this is the first .plt entry, make room for the special
1776 if (s->_raw_size == 0)
1777 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
1779 /* The PowerPC PLT is actually composed of two parts, the first part
1780 is 2 words (for a load and a jump), and then there is a remaining
1781 word available at the end. */
1782 plt_offset = (PLT_INITIAL_ENTRY_SIZE
1784 * ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE)
1785 / PLT_ENTRY_SIZE)));
1787 /* If this symbol is not defined in a regular file, and we are
1788 not generating a shared library, then set the symbol to this
1789 location in the .plt. This is required to make function
1790 pointers compare as equal between the normal executable and
1791 the shared library. */
1793 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
1795 h->root.u.def.section = s;
1796 h->root.u.def.value = plt_offset;
1799 h->plt.offset = plt_offset;
1801 /* Make room for this entry. After the 8192nd entry, room
1802 for two entries is allocated. */
1803 if ((s->_raw_size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
1804 >= PLT_NUM_SINGLE_ENTRIES)
1805 s->_raw_size += 2 * PLT_ENTRY_SIZE;
1807 s->_raw_size += PLT_ENTRY_SIZE;
1809 /* We also need to make an entry in the .rela.plt section. */
1810 s = bfd_get_section_by_name (dynobj, ".rela.plt");
1811 BFD_ASSERT (s != NULL);
1812 s->_raw_size += sizeof (Elf32_External_Rela);
1817 h->plt.offset = (bfd_vma) -1;
1819 /* If this is a weak symbol, and there is a real definition, the
1820 processor independent code will have arranged for us to see the
1821 real definition first, and we can just use the same value. */
1822 if (h->weakdef != NULL)
1824 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
1825 || h->weakdef->root.type == bfd_link_hash_defweak);
1826 h->root.u.def.section = h->weakdef->root.u.def.section;
1827 h->root.u.def.value = h->weakdef->root.u.def.value;
1831 /* This is a reference to a symbol defined by a dynamic object which
1832 is not a function. */
1834 /* If we are creating a shared library, we must presume that the
1835 only references to the symbol are via the global offset table.
1836 For such cases we need not do anything here; the relocations will
1837 be handled correctly by relocate_section. */
1841 /* We must allocate the symbol in our .dynbss section, which will
1842 become part of the .bss section of the executable. There will be
1843 an entry for this symbol in the .dynsym section. The dynamic
1844 object will contain position independent code, so all references
1845 from the dynamic object to this symbol will go through the global
1846 offset table. The dynamic linker will use the .dynsym entry to
1847 determine the address it must put in the global offset table, so
1848 both the dynamic object and the regular object will refer to the
1849 same memory location for the variable.
1851 Of course, if the symbol is sufficiently small, we must instead
1852 allocate it in .sbss. FIXME: It would be better to do this if and
1853 only if there were actually SDAREL relocs for that symbol. */
1855 if (h->size <= elf_gp_size (dynobj))
1856 s = bfd_get_section_by_name (dynobj, ".dynsbss");
1858 s = bfd_get_section_by_name (dynobj, ".dynbss");
1859 BFD_ASSERT (s != NULL);
1861 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
1862 copy the initial value out of the dynamic object and into the
1863 runtime process image. We need to remember the offset into the
1864 .rela.bss section we are going to use. */
1865 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
1869 if (h->size <= elf_gp_size (dynobj))
1870 srel = bfd_get_section_by_name (dynobj, ".rela.sbss");
1872 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
1873 BFD_ASSERT (srel != NULL);
1874 srel->_raw_size += sizeof (Elf32_External_Rela);
1875 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
1878 /* We need to figure out the alignment required for this symbol. I
1879 have no idea how ELF linkers handle this. */
1880 power_of_two = bfd_log2 (h->size);
1881 if (power_of_two > 4)
1884 /* Apply the required alignment. */
1885 s->_raw_size = BFD_ALIGN (s->_raw_size,
1886 (bfd_size_type) (1 << power_of_two));
1887 if (power_of_two > bfd_get_section_alignment (dynobj, s))
1889 if (! bfd_set_section_alignment (dynobj, s, power_of_two))
1893 /* Define the symbol as being at this point in the section. */
1894 h->root.u.def.section = s;
1895 h->root.u.def.value = s->_raw_size;
1897 /* Increment the section size to make room for the symbol. */
1898 s->_raw_size += h->size;
1903 /* Set the sizes of the dynamic sections. */
1906 ppc_elf_size_dynamic_sections (output_bfd, info)
1907 bfd *output_bfd ATTRIBUTE_UNUSED;
1908 struct bfd_link_info *info;
1916 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
1919 dynobj = elf_hash_table (info)->dynobj;
1920 BFD_ASSERT (dynobj != NULL);
1922 if (elf_hash_table (info)->dynamic_sections_created)
1924 /* Set the contents of the .interp section to the interpreter. */
1927 s = bfd_get_section_by_name (dynobj, ".interp");
1928 BFD_ASSERT (s != NULL);
1929 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
1930 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
1935 /* We may have created entries in the .rela.got, .rela.sdata, and
1936 .rela.sdata2 sections. However, if we are not creating the
1937 dynamic sections, we will not actually use these entries. Reset
1938 the size of .rela.got, et al, which will cause it to get
1939 stripped from the output file below. */
1940 static char *rela_sections[] = { ".rela.got", ".rela.sdata",
1941 ".rela.sdata2", ".rela.sbss",
1945 for (p = rela_sections; *p != (char *) 0; p++)
1947 s = bfd_get_section_by_name (dynobj, *p);
1953 /* The check_relocs and adjust_dynamic_symbol entry points have
1954 determined the sizes of the various dynamic sections. Allocate
1958 for (s = dynobj->sections; s != NULL; s = s->next)
1963 if ((s->flags & SEC_LINKER_CREATED) == 0)
1966 /* It's OK to base decisions on the section name, because none
1967 of the dynobj section names depend upon the input files. */
1968 name = bfd_get_section_name (dynobj, s);
1972 if (strcmp (name, ".plt") == 0)
1974 if (s->_raw_size == 0)
1976 /* Strip this section if we don't need it; see the
1982 /* Remember whether there is a PLT. */
1986 else if (strncmp (name, ".rela", 5) == 0)
1988 if (s->_raw_size == 0)
1990 /* If we don't need this section, strip it from the
1991 output file. This is mostly to handle .rela.bss and
1992 .rela.plt. We must create both sections in
1993 create_dynamic_sections, because they must be created
1994 before the linker maps input sections to output
1995 sections. The linker does that before
1996 adjust_dynamic_symbol is called, and it is that
1997 function which decides whether anything needs to go
1998 into these sections. */
2003 /* Remember whether there are any relocation sections. */
2006 /* We use the reloc_count field as a counter if we need
2007 to copy relocs into the output file. */
2011 else if (strcmp (name, ".got") != 0
2012 && strcmp (name, ".sdata") != 0
2013 && strcmp (name, ".sdata2") != 0)
2015 /* It's not one of our sections, so don't allocate space. */
2021 _bfd_strip_section_from_output (info, s);
2025 /* Allocate memory for the section contents. */
2026 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
2027 if (s->contents == NULL && s->_raw_size != 0)
2031 if (elf_hash_table (info)->dynamic_sections_created)
2033 /* Add some entries to the .dynamic section. We fill in the
2034 values later, in ppc_elf_finish_dynamic_sections, but we
2035 must add the entries now so that we get the correct size for
2036 the .dynamic section. The DT_DEBUG entry is filled in by the
2037 dynamic linker and used by the debugger. */
2038 #define add_dynamic_entry(TAG, VAL) \
2039 bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
2043 if (!add_dynamic_entry (DT_DEBUG, 0))
2049 if (!add_dynamic_entry (DT_PLTGOT, 0)
2050 || !add_dynamic_entry (DT_PLTRELSZ, 0)
2051 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
2052 || !add_dynamic_entry (DT_JMPREL, 0))
2058 if (!add_dynamic_entry (DT_RELA, 0)
2059 || !add_dynamic_entry (DT_RELASZ, 0)
2060 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
2064 if ((info->flags & DF_TEXTREL) != 0)
2066 if (!add_dynamic_entry (DT_TEXTREL, 0))
2068 info->flags |= DF_TEXTREL;
2071 #undef add_dynamic_entry
2076 /* Look through the relocs for a section during the first phase, and
2077 allocate space in the global offset table or procedure linkage
2081 ppc_elf_check_relocs (abfd, info, sec, relocs)
2083 struct bfd_link_info *info;
2085 const Elf_Internal_Rela *relocs;
2088 Elf_Internal_Shdr *symtab_hdr;
2089 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2090 const Elf_Internal_Rela *rel;
2091 const Elf_Internal_Rela *rel_end;
2092 bfd_signed_vma *local_got_refcounts;
2093 elf_linker_section_t *sdata;
2094 elf_linker_section_t *sdata2;
2096 asection *sgot = NULL;
2097 asection *srelgot = NULL;
2099 if (info->relocateable)
2103 fprintf (stderr, "ppc_elf_check_relocs called for section %s in %s\n",
2104 bfd_get_section_name (abfd, sec),
2105 bfd_archive_filename (abfd));
2108 /* Create the linker generated sections all the time so that the
2109 special symbols are created. */
2111 if ((sdata = elf_linker_section (abfd, LINKER_SECTION_SDATA)) == NULL)
2113 sdata = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA);
2118 if ((sdata2 = elf_linker_section (abfd, LINKER_SECTION_SDATA2)) == NULL)
2120 sdata2 = ppc_elf_create_linker_section (abfd, info, LINKER_SECTION_SDATA2);
2125 dynobj = elf_hash_table (info)->dynobj;
2126 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2127 local_got_refcounts = elf_local_got_refcounts (abfd);
2129 sym_hashes = elf_sym_hashes (abfd);
2130 sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof (Elf32_External_Sym);
2131 if (!elf_bad_symtab (abfd))
2132 sym_hashes_end -= symtab_hdr->sh_info;
2136 rel_end = relocs + sec->reloc_count;
2137 for (rel = relocs; rel < rel_end; rel++)
2139 unsigned long r_symndx;
2140 struct elf_link_hash_entry *h;
2142 r_symndx = ELF32_R_SYM (rel->r_info);
2143 if (r_symndx < symtab_hdr->sh_info)
2146 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2148 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2149 This shows up in particular in an R_PPC_ADDR32 in the eabi
2151 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2156 elf_hash_table (info)->dynobj = dynobj = abfd;
2157 sgot = ppc_elf_create_got (dynobj, info);
2163 switch (ELF32_R_TYPE (rel->r_info))
2165 /* GOT16 relocations */
2167 case R_PPC_GOT16_LO:
2168 case R_PPC_GOT16_HI:
2169 case R_PPC_GOT16_HA:
2170 /* This symbol requires a global offset table entry. */
2175 elf_hash_table (info)->dynobj = dynobj = abfd;
2176 sgot = ppc_elf_create_got (dynobj, info);
2182 && (h != NULL || info->shared))
2184 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2185 if (srelgot == NULL)
2187 srelgot = bfd_make_section (dynobj, ".rela.got");
2189 || ! bfd_set_section_flags (dynobj, srelgot,
2194 | SEC_LINKER_CREATED
2196 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2203 if (h->got.refcount == 0)
2205 /* Make sure this symbol is output as a dynamic symbol. */
2206 if (h->dynindx == -1)
2207 if (!bfd_elf32_link_record_dynamic_symbol (info, h))
2210 /* Allocate space in the .got. */
2211 sgot->_raw_size += 4;
2212 /* Allocate relocation space. */
2213 srelgot->_raw_size += sizeof (Elf32_External_Rela);
2219 /* This is a global offset table entry for a local symbol. */
2220 if (local_got_refcounts == NULL)
2224 size = symtab_hdr->sh_info;
2225 size *= sizeof (bfd_signed_vma);
2227 = (bfd_signed_vma *) bfd_zalloc (abfd, size);
2228 if (local_got_refcounts == NULL)
2230 elf_local_got_refcounts (abfd) = local_got_refcounts;
2232 if (local_got_refcounts[r_symndx] == 0)
2234 sgot->_raw_size += 4;
2236 /* If we are generating a shared object, we need to
2237 output a R_PPC_RELATIVE reloc so that the
2238 dynamic linker can adjust this GOT entry. */
2240 srelgot->_raw_size += sizeof (Elf32_External_Rela);
2242 local_got_refcounts[r_symndx]++;
2246 /* Indirect .sdata relocation */
2247 case R_PPC_EMB_SDAI16:
2250 ((*_bfd_error_handler)
2251 (_("%s: relocation %s cannot be used when making a shared object"),
2252 bfd_archive_filename (abfd), "R_PPC_EMB_SDAI16"));
2256 if (srelgot == NULL && (h != NULL || info->shared))
2258 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2259 if (srelgot == NULL)
2261 srelgot = bfd_make_section (dynobj, ".rela.got");
2263 || ! bfd_set_section_flags (dynobj, srelgot,
2268 | SEC_LINKER_CREATED
2270 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2275 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata, h, rel))
2280 /* Indirect .sdata2 relocation */
2281 case R_PPC_EMB_SDA2I16:
2284 ((*_bfd_error_handler)
2285 (_("%s: relocation %s cannot be used when making a shared object"),
2286 bfd_archive_filename (abfd), "R_PPC_EMB_SDA2I16"));
2290 if (srelgot == NULL && (h != NULL || info->shared))
2292 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2293 if (srelgot == NULL)
2295 srelgot = bfd_make_section (dynobj, ".rela.got");
2297 || ! bfd_set_section_flags (dynobj, srelgot,
2302 | SEC_LINKER_CREATED
2304 || ! bfd_set_section_alignment (dynobj, srelgot, 2))
2309 if (!bfd_elf32_create_pointer_linker_section (abfd, info, sdata2, h, rel))
2314 case R_PPC_SDAREL16:
2315 case R_PPC_EMB_SDA2REL:
2316 case R_PPC_EMB_SDA21:
2319 ((*_bfd_error_handler)
2320 (_("%s: relocation %s cannot be used when making a shared object"),
2321 bfd_archive_filename (abfd),
2322 ppc_elf_howto_table[(int) ELF32_R_TYPE (rel->r_info)]->name));
2328 case R_PPC_PLTREL24:
2329 case R_PPC_PLT16_LO:
2330 case R_PPC_PLT16_HI:
2331 case R_PPC_PLT16_HA:
2333 fprintf (stderr, "Reloc requires a PLT entry\n");
2335 /* This symbol requires a procedure linkage table entry. We
2336 actually build the entry in adjust_dynamic_symbol,
2337 because this might be a case of linking PIC code without
2338 linking in any dynamic objects, in which case we don't
2339 need to generate a procedure linkage table after all. */
2343 /* It does not make sense to have a procedure linkage
2344 table entry for a local symbol. */
2345 bfd_set_error (bfd_error_bad_value);
2349 /* Make sure this symbol is output as a dynamic symbol. */
2350 if (h->dynindx == -1)
2352 if (! bfd_elf32_link_record_dynamic_symbol (info, h))
2355 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2359 /* The following relocations don't need to propagate the
2360 relocation if linking a shared object since they are
2361 section relative. */
2363 case R_PPC_SECTOFF_LO:
2364 case R_PPC_SECTOFF_HI:
2365 case R_PPC_SECTOFF_HA:
2368 /* This refers only to functions defined in the shared library */
2369 case R_PPC_LOCAL24PC:
2372 /* This relocation describes the C++ object vtable hierarchy.
2373 Reconstruct it for later use during GC. */
2374 case R_PPC_GNU_VTINHERIT:
2375 if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2379 /* This relocation describes which C++ vtable entries are actually
2380 used. Record for later use during GC. */
2381 case R_PPC_GNU_VTENTRY:
2382 if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2386 /* When creating a shared object, we must copy these
2387 relocs into the output file. We create a reloc
2388 section in dynobj and make room for the reloc. */
2391 case R_PPC_REL14_BRTAKEN:
2392 case R_PPC_REL14_BRNTAKEN:
2395 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
2396 || SYMBOL_REFERENCES_LOCAL (info, h))
2404 fprintf (stderr, "ppc_elf_check_relocs need to create relocation for %s\n",
2405 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
2411 name = (bfd_elf_string_from_elf_section
2413 elf_elfheader (abfd)->e_shstrndx,
2414 elf_section_data (sec)->rel_hdr.sh_name));
2418 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2419 && strcmp (bfd_get_section_name (abfd, sec),
2422 sreloc = bfd_get_section_by_name (dynobj, name);
2427 sreloc = bfd_make_section (dynobj, name);
2428 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2429 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2430 if ((sec->flags & SEC_ALLOC) != 0)
2431 flags |= SEC_ALLOC | SEC_LOAD;
2433 || ! bfd_set_section_flags (dynobj, sreloc, flags)
2434 || ! bfd_set_section_alignment (dynobj, sreloc, 2))
2437 if (sec->flags & SEC_READONLY)
2438 info->flags |= DF_TEXTREL;
2441 sreloc->_raw_size += sizeof (Elf32_External_Rela);
2443 /* FIXME: We should here do what the m68k and i386
2444 backends do: if the reloc is pc-relative, record it
2445 in case it turns out that the reloc is unnecessary
2446 because the symbol is forced local by versioning or
2447 we are linking with -Bdynamic. Fortunately this
2448 case is not frequent. */
2458 /* Return the section that should be marked against GC for a given
2462 ppc_elf_gc_mark_hook (abfd, info, rel, h, sym)
2464 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2465 Elf_Internal_Rela *rel;
2466 struct elf_link_hash_entry *h;
2467 Elf_Internal_Sym *sym;
2471 switch (ELF32_R_TYPE (rel->r_info))
2473 case R_PPC_GNU_VTINHERIT:
2474 case R_PPC_GNU_VTENTRY:
2478 switch (h->root.type)
2480 case bfd_link_hash_defined:
2481 case bfd_link_hash_defweak:
2482 return h->root.u.def.section;
2484 case bfd_link_hash_common:
2485 return h->root.u.c.p->section;
2494 return bfd_section_from_elf_index (abfd, sym->st_shndx);
2500 /* Update the got entry reference counts for the section being removed. */
2503 ppc_elf_gc_sweep_hook (abfd, info, sec, relocs)
2505 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2507 const Elf_Internal_Rela *relocs;
2509 Elf_Internal_Shdr *symtab_hdr;
2510 struct elf_link_hash_entry **sym_hashes;
2511 bfd_signed_vma *local_got_refcounts;
2512 const Elf_Internal_Rela *rel, *relend;
2513 unsigned long r_symndx;
2514 struct elf_link_hash_entry *h;
2516 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2517 sym_hashes = elf_sym_hashes (abfd);
2518 local_got_refcounts = elf_local_got_refcounts (abfd);
2520 relend = relocs + sec->reloc_count;
2521 for (rel = relocs; rel < relend; rel++)
2522 switch (ELF32_R_TYPE (rel->r_info))
2525 case R_PPC_GOT16_LO:
2526 case R_PPC_GOT16_HI:
2527 case R_PPC_GOT16_HA:
2528 r_symndx = ELF32_R_SYM (rel->r_info);
2529 if (r_symndx >= symtab_hdr->sh_info)
2531 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2532 if (h->got.refcount > 0)
2535 else if (local_got_refcounts != NULL)
2537 if (local_got_refcounts[r_symndx] > 0)
2538 local_got_refcounts[r_symndx]--;
2543 case R_PPC_PLTREL24:
2544 case R_PPC_PLT16_LO:
2545 case R_PPC_PLT16_HI:
2546 case R_PPC_PLT16_HA:
2547 r_symndx = ELF32_R_SYM (rel->r_info);
2548 if (r_symndx >= symtab_hdr->sh_info)
2550 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2551 if (h->plt.refcount > 0)
2563 /* Hook called by the linker routine which adds symbols from an object
2564 file. We use it to put .comm items in .sbss, and not .bss. */
2567 ppc_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
2569 struct bfd_link_info *info;
2570 const Elf_Internal_Sym *sym;
2571 const char **namep ATTRIBUTE_UNUSED;
2572 flagword *flagsp ATTRIBUTE_UNUSED;
2576 if (sym->st_shndx == SHN_COMMON
2577 && !info->relocateable
2578 && sym->st_size <= elf_gp_size (abfd)
2579 && info->hash->creator->flavour == bfd_target_elf_flavour)
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_archive_filename (input_bfd),
2927 bfd_section_name(input_bfd, input_section),
2928 (long) input_section->reloc_count,
2929 (info->relocateable) ? " (relocatable)" : "");
2932 if (info->relocateable)
2935 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2936 /* Initialize howto table if needed. */
2937 ppc_elf_howto_init ();
2939 local_got_offsets = elf_local_got_offsets (input_bfd);
2944 splt = bfd_get_section_by_name (dynobj, ".plt");
2945 sgot = bfd_get_section_by_name (dynobj, ".got");
2948 for (; rel < relend; rel++)
2950 enum elf_ppc_reloc_type r_type = (enum elf_ppc_reloc_type)ELF32_R_TYPE (rel->r_info);
2951 bfd_vma offset = rel->r_offset;
2952 bfd_vma addend = rel->r_addend;
2953 bfd_reloc_status_type r = bfd_reloc_other;
2954 Elf_Internal_Sym *sym = (Elf_Internal_Sym *) 0;
2955 asection *sec = (asection *) 0;
2956 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) 0;
2957 const char *sym_name = (const char *) 0;
2958 reloc_howto_type *howto;
2959 unsigned long r_symndx;
2961 int will_become_local;
2963 /* Unknown relocation handling */
2964 if ((unsigned) r_type >= (unsigned) R_PPC_max
2965 || !ppc_elf_howto_table[(int) r_type])
2967 (*_bfd_error_handler) (_("%s: unknown relocation type %d"),
2968 bfd_archive_filename (input_bfd),
2971 bfd_set_error (bfd_error_bad_value);
2976 howto = ppc_elf_howto_table[(int) r_type];
2977 r_symndx = ELF32_R_SYM (rel->r_info);
2979 if (r_symndx < symtab_hdr->sh_info)
2981 sym = local_syms + r_symndx;
2982 sec = local_sections[r_symndx];
2983 sym_name = "<local symbol>";
2985 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
2986 addend = rel->r_addend;
2987 /* Relocs to local symbols are always resolved. */
2988 will_become_local = 1;
2992 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2993 while (h->root.type == bfd_link_hash_indirect
2994 || h->root.type == bfd_link_hash_warning)
2995 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2996 sym_name = h->root.root.string;
2998 /* Can this relocation be resolved immediately? */
2999 will_become_local = SYMBOL_REFERENCES_LOCAL (info, h);
3001 if (h->root.type == bfd_link_hash_defined
3002 || h->root.type == bfd_link_hash_defweak)
3004 sec = h->root.u.def.section;
3005 if (((r_type == R_PPC_PLT32
3006 || r_type == R_PPC_PLTREL24)
3008 && h->plt.offset != (bfd_vma) -1)
3009 || (r_type == R_PPC_LOCAL24PC
3010 && sec->output_section == NULL)
3011 || ((r_type == R_PPC_GOT16
3012 || r_type == R_PPC_GOT16_LO
3013 || r_type == R_PPC_GOT16_HI
3014 || r_type == R_PPC_GOT16_HA)
3015 && elf_hash_table (info)->dynamic_sections_created
3016 && (! info->shared || ! will_become_local))
3018 && ! will_become_local
3019 && ((input_section->flags & SEC_ALLOC) != 0
3020 /* Testing SEC_DEBUGGING here may be wrong.
3021 It's here to avoid a crash when
3022 generating a shared library with DWARF
3023 debugging information. */
3024 || ((input_section->flags & SEC_DEBUGGING) != 0
3025 && (h->elf_link_hash_flags
3026 & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
3027 && (r_type == R_PPC_ADDR32
3028 || r_type == R_PPC_ADDR24
3029 || r_type == R_PPC_ADDR16
3030 || r_type == R_PPC_ADDR16_LO
3031 || r_type == R_PPC_ADDR16_HI
3032 || r_type == R_PPC_ADDR16_HA
3033 || r_type == R_PPC_ADDR14
3034 || r_type == R_PPC_ADDR14_BRTAKEN
3035 || r_type == R_PPC_ADDR14_BRNTAKEN
3036 || r_type == R_PPC_COPY
3037 || r_type == R_PPC_GLOB_DAT
3038 || r_type == R_PPC_JMP_SLOT
3039 || r_type == R_PPC_UADDR32
3040 || r_type == R_PPC_UADDR16
3041 || r_type == R_PPC_SDAREL16
3042 || r_type == R_PPC_EMB_NADDR32
3043 || r_type == R_PPC_EMB_NADDR16
3044 || r_type == R_PPC_EMB_NADDR16_LO
3045 || r_type == R_PPC_EMB_NADDR16_HI
3046 || r_type == R_PPC_EMB_NADDR16_HA
3047 || r_type == R_PPC_EMB_SDAI16
3048 || r_type == R_PPC_EMB_SDA2I16
3049 || r_type == R_PPC_EMB_SDA2REL
3050 || r_type == R_PPC_EMB_SDA21
3051 || r_type == R_PPC_EMB_MRKREF
3052 || r_type == R_PPC_EMB_BIT_FLD
3053 || r_type == R_PPC_EMB_RELSDA
3054 || ((r_type == R_PPC_REL24
3055 || r_type == R_PPC_REL32
3056 || r_type == R_PPC_REL14
3057 || r_type == R_PPC_REL14_BRTAKEN
3058 || r_type == R_PPC_REL14_BRNTAKEN
3059 || r_type == R_PPC_RELATIVE)
3060 && strcmp (h->root.root.string,
3061 "_GLOBAL_OFFSET_TABLE_") != 0))))
3063 /* In these cases, we don't need the relocation
3064 value. We check specially because in some
3065 obscure cases sec->output_section will be NULL. */
3068 else if (sec->output_section == NULL)
3070 (*_bfd_error_handler)
3071 (_("%s: warning: unresolvable relocation against symbol `%s' from %s section"),
3072 bfd_archive_filename (input_bfd), h->root.root.string,
3073 bfd_get_section_name (input_bfd, input_section));
3077 relocation = (h->root.u.def.value
3078 + sec->output_section->vma
3079 + sec->output_offset);
3081 else if (h->root.type == bfd_link_hash_undefweak)
3083 else if (info->shared
3084 && (!info->symbolic || info->allow_shlib_undefined)
3085 && !info->no_undefined
3086 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3090 if (! (*info->callbacks->undefined_symbol) (info,
3091 h->root.root.string,
3096 || info->no_undefined
3097 || ELF_ST_VISIBILITY (h->other))))
3103 switch ((int) r_type)
3106 (*_bfd_error_handler) (_("%s: unknown relocation type %d for symbol %s"),
3107 bfd_archive_filename (input_bfd),
3108 (int) r_type, sym_name);
3110 bfd_set_error (bfd_error_bad_value);
3114 case (int) R_PPC_NONE:
3117 /* Relocations that need no special processing. */
3118 case (int) R_PPC_LOCAL24PC:
3119 /* It makes no sense to point a local relocation
3120 at a symbol not in this object. */
3122 && (h->root.type == bfd_link_hash_defined
3123 || h->root.type == bfd_link_hash_defweak)
3124 && sec->output_section == NULL)
3126 if (! (*info->callbacks->undefined_symbol) (info,
3127 h->root.root.string,
3137 /* Relocations that may need to be propagated if this is a shared
3139 case (int) R_PPC_REL24:
3140 case (int) R_PPC_REL32:
3141 case (int) R_PPC_REL14:
3142 /* If these relocations are not to a named symbol, they can be
3143 handled right here, no need to bother the dynamic linker. */
3145 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
3146 || SYMBOL_REFERENCES_LOCAL (info, h))
3150 /* Relocations that always need to be propagated if this is a shared
3152 case (int) R_PPC_ADDR32:
3153 case (int) R_PPC_ADDR24:
3154 case (int) R_PPC_ADDR16:
3155 case (int) R_PPC_ADDR16_LO:
3156 case (int) R_PPC_ADDR16_HI:
3157 case (int) R_PPC_ADDR16_HA:
3158 case (int) R_PPC_ADDR14:
3159 case (int) R_PPC_UADDR32:
3160 case (int) R_PPC_UADDR16:
3161 if (info->shared && r_symndx != 0)
3163 Elf_Internal_Rela outrel;
3167 fprintf (stderr, "ppc_elf_relocate_section need to create relocation for %s\n",
3168 (h && h->root.root.string) ? h->root.root.string : "<unknown>");
3171 /* When generating a shared object, these relocations
3172 are copied into the output file to be resolved at run
3179 name = (bfd_elf_string_from_elf_section
3181 elf_elfheader (input_bfd)->e_shstrndx,
3182 elf_section_data (input_section)->rel_hdr.sh_name));
3186 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3187 && strcmp (bfd_get_section_name (input_bfd,
3191 sreloc = bfd_get_section_by_name (dynobj, name);
3192 BFD_ASSERT (sreloc != NULL);
3198 _bfd_elf_section_offset (output_bfd, info, input_section,
3200 if (outrel.r_offset == (bfd_vma) -1
3201 || outrel.r_offset == (bfd_vma) -2)
3202 skip = (int) outrel.r_offset;
3203 outrel.r_offset += (input_section->output_section->vma
3204 + input_section->output_offset);
3207 memset (&outrel, 0, sizeof outrel);
3208 /* h->dynindx may be -1 if this symbol was marked to
3210 else if (! will_become_local)
3212 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
3213 outrel.r_addend = rel->r_addend;
3217 if (r_type == R_PPC_ADDR32)
3219 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
3220 outrel.r_addend = relocation + rel->r_addend;
3227 sec = local_sections[r_symndx];
3230 BFD_ASSERT (h->root.type == bfd_link_hash_defined
3232 == bfd_link_hash_defweak));
3233 sec = h->root.u.def.section;
3235 if (sec != NULL && bfd_is_abs_section (sec))
3237 else if (sec == NULL || sec->owner == NULL)
3239 bfd_set_error (bfd_error_bad_value);
3246 osec = sec->output_section;
3247 indx = elf_section_data (osec)->dynindx;
3248 BFD_ASSERT (indx > 0);
3252 printf ("indx=%d section=%s flags=%08x name=%s\n",
3253 indx, osec->name, osec->flags,
3254 h->root.root.string);
3259 outrel.r_info = ELF32_R_INFO (indx, r_type);
3260 outrel.r_addend = relocation + rel->r_addend;
3264 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3265 (((Elf32_External_Rela *)
3267 + sreloc->reloc_count));
3268 ++sreloc->reloc_count;
3270 /* This reloc will be computed at runtime, so there's no
3271 need to do anything now, unless this is a RELATIVE
3272 reloc in an unallocated section. */
3274 || (input_section->flags & SEC_ALLOC) != 0
3275 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE)
3279 /* Arithmetic adjust relocations that aren't going into a
3281 if (r_type == R_PPC_ADDR16_HA
3282 /* It's just possible that this symbol is a weak symbol
3283 that's not actually defined anywhere. In that case,
3284 'sec' would be NULL, and we should leave the symbol
3285 alone (it will be set to zero elsewhere in the link). */
3288 addend += ((relocation + addend) & 0x8000) << 1;
3292 /* branch taken prediction relocations */
3293 case (int) R_PPC_ADDR14_BRTAKEN:
3294 case (int) R_PPC_REL14_BRTAKEN:
3295 insn = bfd_get_32 (output_bfd, contents + offset);
3296 if ((relocation - offset) & 0x8000)
3297 insn &= ~BRANCH_PREDICT_BIT;
3299 insn |= BRANCH_PREDICT_BIT;
3300 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3303 /* branch not taken predicition relocations */
3304 case (int) R_PPC_ADDR14_BRNTAKEN:
3305 case (int) R_PPC_REL14_BRNTAKEN:
3306 insn = bfd_get_32 (output_bfd, contents + offset);
3307 if ((relocation - offset) & 0x8000)
3308 insn |= BRANCH_PREDICT_BIT;
3310 insn &= ~BRANCH_PREDICT_BIT;
3311 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3314 /* GOT16 relocations */
3315 case (int) R_PPC_GOT16:
3316 case (int) R_PPC_GOT16_LO:
3317 case (int) R_PPC_GOT16_HI:
3318 case (int) R_PPC_GOT16_HA:
3319 /* Relocation is to the entry for this symbol in the global
3321 BFD_ASSERT (sgot != NULL);
3327 off = h->got.offset;
3328 BFD_ASSERT (off != (bfd_vma) -1);
3330 if (! elf_hash_table (info)->dynamic_sections_created
3332 && SYMBOL_REFERENCES_LOCAL (info, h)))
3334 /* This is actually a static link, or it is a
3335 -Bsymbolic link and the symbol is defined
3336 locally. We must initialize this entry in the
3337 global offset table. Since the offset must
3338 always be a multiple of 4, we use the least
3339 significant bit to record whether we have
3340 initialized it already.
3342 When doing a dynamic link, we create a .rela.got
3343 relocation entry to initialize the value. This
3344 is done in the finish_dynamic_symbol routine. */
3349 bfd_put_32 (output_bfd, relocation,
3350 sgot->contents + off);
3355 relocation = sgot->output_offset + off - 4;
3361 BFD_ASSERT (local_got_offsets != NULL
3362 && local_got_offsets[r_symndx] != (bfd_vma) -1);
3364 off = local_got_offsets[r_symndx];
3366 /* The offset must always be a multiple of 4. We use
3367 the least significant bit to record whether we have
3368 already processed this entry. */
3373 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
3378 Elf_Internal_Rela outrel;
3380 /* We need to generate a R_PPC_RELATIVE reloc
3381 for the dynamic linker. */
3382 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3383 BFD_ASSERT (srelgot != NULL);
3385 outrel.r_offset = (sgot->output_section->vma
3386 + sgot->output_offset
3388 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
3389 outrel.r_addend = relocation;
3390 bfd_elf32_swap_reloca_out (output_bfd, &outrel,
3391 (((Elf32_External_Rela *)
3393 + srelgot->reloc_count));
3394 ++srelgot->reloc_count;
3397 local_got_offsets[r_symndx] |= 1;
3400 relocation = sgot->output_offset + off - 4;
3404 /* Indirect .sdata relocation */
3405 case (int) R_PPC_EMB_SDAI16:
3406 BFD_ASSERT (sdata != NULL);
3407 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
3408 sdata, h, relocation, rel,
3412 /* Indirect .sdata2 relocation */
3413 case (int) R_PPC_EMB_SDA2I16:
3414 BFD_ASSERT (sdata2 != NULL);
3415 relocation = bfd_elf32_finish_pointer_linker_section (output_bfd, input_bfd, info,
3416 sdata2, h, relocation, rel,
3420 /* Handle the TOC16 reloc. We want to use the offset within the .got
3421 section, not the actual VMA. This is appropriate when generating
3422 an embedded ELF object, for which the .got section acts like the
3423 AIX .toc section. */
3424 case (int) R_PPC_TOC16: /* phony GOT16 relocations */
3425 BFD_ASSERT (sec != (asection *) 0);
3426 BFD_ASSERT (bfd_is_und_section (sec)
3427 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
3428 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
3430 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
3433 case (int) R_PPC_PLTREL24:
3434 /* Relocation is to the entry for this symbol in the
3435 procedure linkage table. */
3436 BFD_ASSERT (h != NULL);
3438 if (h->plt.offset == (bfd_vma) -1
3441 /* We didn't make a PLT entry for this symbol. This
3442 happens when statically linking PIC code, or when
3443 using -Bsymbolic. */
3447 relocation = (splt->output_section->vma
3448 + splt->output_offset
3452 /* relocate against _SDA_BASE_ */
3453 case (int) R_PPC_SDAREL16:
3457 BFD_ASSERT (sec != (asection *) 0);
3458 name = bfd_get_section_name (abfd, sec->output_section);
3459 if (strcmp (name, ".sdata") != 0
3460 && strcmp (name, ".sbss") != 0)
3462 (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
3463 bfd_archive_filename (input_bfd),
3465 ppc_elf_howto_table[(int) r_type]->name,
3468 addend -= (sdata->sym_hash->root.u.def.value
3469 + sdata->sym_hash->root.u.def.section->output_section->vma
3470 + sdata->sym_hash->root.u.def.section->output_offset);
3474 /* relocate against _SDA2_BASE_ */
3475 case (int) R_PPC_EMB_SDA2REL:
3479 BFD_ASSERT (sec != (asection *) 0);
3480 name = bfd_get_section_name (abfd, sec->output_section);
3481 if (strcmp (name, ".sdata2") != 0 && strcmp (name, ".sbss2") != 0)
3483 (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
3484 bfd_archive_filename (input_bfd),
3486 ppc_elf_howto_table[(int) r_type]->name,
3489 bfd_set_error (bfd_error_bad_value);
3493 addend -= (sdata2->sym_hash->root.u.def.value
3494 + sdata2->sym_hash->root.u.def.section->output_section->vma
3495 + sdata2->sym_hash->root.u.def.section->output_offset);
3499 /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
3500 case (int) R_PPC_EMB_SDA21:
3501 case (int) R_PPC_EMB_RELSDA:
3506 BFD_ASSERT (sec != (asection *) 0);
3507 name = bfd_get_section_name (abfd, sec->output_section);
3508 if (strcmp (name, ".sdata") == 0 || strcmp (name, ".sbss") == 0)
3511 addend -= (sdata->sym_hash->root.u.def.value
3512 + sdata->sym_hash->root.u.def.section->output_section->vma
3513 + sdata->sym_hash->root.u.def.section->output_offset);
3516 else if (strcmp (name, ".sdata2") == 0
3517 || strcmp (name, ".sbss2") == 0)
3520 addend -= (sdata2->sym_hash->root.u.def.value
3521 + sdata2->sym_hash->root.u.def.section->output_section->vma
3522 + sdata2->sym_hash->root.u.def.section->output_offset);
3525 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
3526 || strcmp (name, ".PPC.EMB.sbss0") == 0)
3533 (*_bfd_error_handler) (_("%s: The target (%s) of a %s relocation is in the wrong output section (%s)"),
3534 bfd_archive_filename (input_bfd),
3536 ppc_elf_howto_table[(int) r_type]->name,
3539 bfd_set_error (bfd_error_bad_value);
3544 if (r_type == R_PPC_EMB_SDA21)
3545 { /* fill in register field */
3546 insn = bfd_get_32 (output_bfd, contents + offset);
3547 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
3548 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
3553 /* Relocate against the beginning of the section */
3554 case (int) R_PPC_SECTOFF:
3555 case (int) R_PPC_SECTOFF_LO:
3556 case (int) R_PPC_SECTOFF_HI:
3557 BFD_ASSERT (sec != (asection *) 0);
3558 addend -= sec->output_section->vma;
3561 case (int) R_PPC_SECTOFF_HA:
3562 BFD_ASSERT (sec != (asection *) 0);
3563 addend -= sec->output_section->vma;
3564 addend += ((relocation + addend) & 0x8000) << 1;
3567 /* Negative relocations */
3568 case (int) R_PPC_EMB_NADDR32:
3569 case (int) R_PPC_EMB_NADDR16:
3570 case (int) R_PPC_EMB_NADDR16_LO:
3571 case (int) R_PPC_EMB_NADDR16_HI:
3572 addend -= 2 * relocation;
3575 case (int) R_PPC_EMB_NADDR16_HA:
3576 addend -= 2 * relocation;
3577 addend += ((relocation + addend) & 0x8000) << 1;
3580 /* NOP relocation that prevents garbage collecting linkers from omitting a
3582 case (int) R_PPC_EMB_MRKREF:
3585 case (int) R_PPC_COPY:
3586 case (int) R_PPC_GLOB_DAT:
3587 case (int) R_PPC_JMP_SLOT:
3588 case (int) R_PPC_RELATIVE:
3589 case (int) R_PPC_PLT32:
3590 case (int) R_PPC_PLTREL32:
3591 case (int) R_PPC_PLT16_LO:
3592 case (int) R_PPC_PLT16_HI:
3593 case (int) R_PPC_PLT16_HA:
3594 case (int) R_PPC_EMB_RELSEC16:
3595 case (int) R_PPC_EMB_RELST_LO:
3596 case (int) R_PPC_EMB_RELST_HI:
3597 case (int) R_PPC_EMB_RELST_HA:
3598 case (int) R_PPC_EMB_BIT_FLD:
3599 (*_bfd_error_handler) (_("%s: Relocation %s is not yet supported for symbol %s."),
3600 bfd_archive_filename (input_bfd),
3601 ppc_elf_howto_table[(int) r_type]->name,
3604 bfd_set_error (bfd_error_invalid_operation);
3608 case (int) R_PPC_GNU_VTINHERIT:
3609 case (int) R_PPC_GNU_VTENTRY:
3610 /* These are no-ops in the end. */
3615 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
3624 r = _bfd_final_link_relocate (howto,
3632 if (r == bfd_reloc_ok)
3634 else if (r == bfd_reloc_overflow)
3640 if (h->root.type == bfd_link_hash_undefweak
3641 && howto->pc_relative)
3643 /* Assume this is a call protected by other code that
3644 detect the symbol is undefined. If this is the case,
3645 we can safely ignore the overflow. If not, the
3646 program is hosed anyway, and a little warning isn't
3652 name = h->root.root.string;
3656 name = bfd_elf_string_from_elf_section (input_bfd,
3657 symtab_hdr->sh_link,
3662 name = bfd_section_name (input_bfd, sec);
3665 if (! (*info->callbacks->reloc_overflow) (info,
3679 fprintf (stderr, "\n");
3685 static enum elf_reloc_type_class
3686 ppc_elf_reloc_type_class (rela)
3687 const Elf_Internal_Rela *rela;
3689 switch ((int) ELF32_R_TYPE (rela->r_info))
3691 case R_PPC_RELATIVE:
3692 return reloc_class_relative;
3695 case R_PPC_JMP_SLOT:
3696 return reloc_class_plt;
3698 return reloc_class_copy;
3700 return reloc_class_normal;
3704 /* Support for core dump NOTE sections */
3706 ppc_elf_grok_prstatus (abfd, note)
3708 Elf_Internal_Note *note;
3711 unsigned int raw_size;
3713 switch (note->descsz)
3718 case 268: /* Linux/PPC */
3720 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
3723 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
3732 /* Make a ".reg/999" section. */
3733 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
3734 raw_size, note->descpos + offset);
3738 ppc_elf_grok_psinfo (abfd, note)
3740 Elf_Internal_Note *note;
3742 switch (note->descsz)
3747 case 128: /* Linux/PPC elf_prpsinfo */
3748 elf_tdata (abfd)->core_program
3749 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
3750 elf_tdata (abfd)->core_command
3751 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
3754 /* Note that for some reason, a spurious space is tacked
3755 onto the end of the args in some (at least one anyway)
3756 implementations, so strip it off if it exists. */
3759 char *command = elf_tdata (abfd)->core_command;
3760 int n = strlen (command);
3762 if (0 < n && command[n - 1] == ' ')
3763 command[n - 1] = '\0';
3769 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
3770 #define TARGET_LITTLE_NAME "elf32-powerpcle"
3771 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
3772 #define TARGET_BIG_NAME "elf32-powerpc"
3773 #define ELF_ARCH bfd_arch_powerpc
3774 #define ELF_MACHINE_CODE EM_PPC
3775 #define ELF_MAXPAGESIZE 0x10000
3776 #define elf_info_to_howto ppc_elf_info_to_howto
3778 #ifdef EM_CYGNUS_POWERPC
3779 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3783 #define ELF_MACHINE_ALT2 EM_PPC_OLD
3786 #define elf_backend_plt_not_loaded 1
3787 #define elf_backend_got_symbol_offset 4
3788 #define elf_backend_can_gc_sections 1
3789 #define elf_backend_can_refcount 1
3790 #define elf_backend_got_header_size 12
3791 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
3792 #define elf_backend_rela_normal 1
3794 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
3795 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
3796 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
3797 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
3798 #define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
3800 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
3801 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
3802 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
3803 #define elf_backend_relocate_section ppc_elf_relocate_section
3804 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
3805 #define elf_backend_check_relocs ppc_elf_check_relocs
3806 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
3807 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
3808 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
3809 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
3810 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
3811 #define elf_backend_fake_sections ppc_elf_fake_sections
3812 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
3813 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
3814 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
3815 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
3816 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
3818 #include "elf32-target.h"
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