1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004 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
20 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
21 Boston, MA 02111-1307, USA. */
23 /* This file is based on a preliminary PowerPC ELF ABI. The
24 information may not match the final PowerPC ELF ABI. It includes
25 suggestions from the in-progress Embedded PowerPC ABI, and that
26 information may also not match. */
34 #include "elf32-ppc.h"
36 /* RELA relocations are used here. */
38 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc_elf_unhandled_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 /* Branch prediction bit for branch taken relocs. */
44 #define BRANCH_PREDICT_BIT 0x200000
45 /* Mask to set RA in memory instructions. */
46 #define RA_REGISTER_MASK 0x001f0000
47 /* Value to shift register by to insert RA. */
48 #define RA_REGISTER_SHIFT 16
50 /* The name of the dynamic interpreter. This is put in the .interp
52 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
54 /* The size in bytes of an entry in the procedure linkage table. */
55 #define PLT_ENTRY_SIZE 12
56 /* The initial size of the plt reserved for the dynamic linker. */
57 #define PLT_INITIAL_ENTRY_SIZE 72
58 /* The size of the gap between entries in the PLT. */
59 #define PLT_SLOT_SIZE 8
60 /* The number of single-slot PLT entries (the rest use two slots). */
61 #define PLT_NUM_SINGLE_ENTRIES 8192
63 /* Some nop instructions. */
64 #define NOP 0x60000000
65 #define CROR_151515 0x4def7b82
66 #define CROR_313131 0x4ffffb82
68 /* Offset of tp and dtp pointers from start of TLS block. */
69 #define TP_OFFSET 0x7000
70 #define DTP_OFFSET 0x8000
73 /* Enumeration to specify the special section. */
74 enum elf_linker_section_enum
80 /* Sections created by the linker. */
82 typedef struct elf_linker_section
84 /* pointer to the section */
86 /* pointer to the relocations needed for this section */
87 asection
*rel_section
;
88 /* pointer to the created symbol hash value */
89 struct elf_link_hash_entry
*sym_hash
;
90 /* offset of symbol from beginning of section */
92 } elf_linker_section_t
;
94 /* Linked list of allocated pointer entries. This hangs off of the
95 symbol lists, and provides allows us to return different pointers,
96 based on different addend's. */
98 typedef struct elf_linker_section_pointers
100 /* next allocated pointer for this symbol */
101 struct elf_linker_section_pointers
*next
;
102 /* offset of pointer from beginning of section */
106 /* which linker section this is */
107 elf_linker_section_t
*lsect
;
108 /* whether address was written yet */
109 bfd_boolean written_address_p
;
110 } elf_linker_section_pointers_t
;
112 struct ppc_elf_obj_tdata
114 struct elf_obj_tdata elf
;
116 /* A mapping from local symbols to offsets into the various linker
117 sections added. This is index by the symbol index. */
118 elf_linker_section_pointers_t
**linker_section_pointers
;
121 #define ppc_elf_tdata(bfd) \
122 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
124 #define elf_local_ptr_offsets(bfd) \
125 (ppc_elf_tdata (bfd)->linker_section_pointers)
127 /* Override the generic function because we store some extras. */
130 ppc_elf_mkobject (bfd
*abfd
)
132 bfd_size_type amt
= sizeof (struct ppc_elf_obj_tdata
);
133 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
134 if (abfd
->tdata
.any
== NULL
)
139 /* The PPC linker needs to keep track of the number of relocs that it
140 decides to copy as dynamic relocs in check_relocs for each symbol.
141 This is so that it can later discard them if they are found to be
142 unnecessary. We store the information in a field extending the
143 regular ELF linker hash table. */
145 struct ppc_elf_dyn_relocs
147 struct ppc_elf_dyn_relocs
*next
;
149 /* The input section of the reloc. */
152 /* Total number of relocs copied for the input section. */
155 /* Number of pc-relative relocs copied for the input section. */
156 bfd_size_type pc_count
;
159 /* PPC ELF linker hash entry. */
161 struct ppc_elf_link_hash_entry
163 struct elf_link_hash_entry elf
;
165 /* If this symbol is used in the linker created sections, the processor
166 specific backend uses this field to map the field into the offset
167 from the beginning of the section. */
168 elf_linker_section_pointers_t
*linker_section_pointer
;
170 /* Track dynamic relocs copied for this symbol. */
171 struct ppc_elf_dyn_relocs
*dyn_relocs
;
173 /* Contexts in which symbol is used in the GOT (or TOC).
174 TLS_GD .. TLS_TLS bits are or'd into the mask as the
175 corresponding relocs are encountered during check_relocs.
176 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
177 indicate the corresponding GOT entry type is not needed. */
178 #define TLS_GD 1 /* GD reloc. */
179 #define TLS_LD 2 /* LD reloc. */
180 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
181 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
182 #define TLS_TLS 16 /* Any TLS reloc. */
183 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
187 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
189 /* PPC ELF linker hash table. */
191 struct ppc_elf_link_hash_table
193 struct elf_link_hash_table elf
;
195 /* Short-cuts to get to dynamic linker sections. */
204 elf_linker_section_t
*sdata
;
205 elf_linker_section_t
*sdata2
;
208 /* Shortcut to .__tls_get_addr. */
209 struct elf_link_hash_entry
*tls_get_addr
;
211 /* TLS local dynamic got entry handling. */
213 bfd_signed_vma refcount
;
217 /* Small local sym to section mapping cache. */
218 struct sym_sec_cache sym_sec
;
221 /* Get the PPC ELF linker hash table from a link_info structure. */
223 #define ppc_elf_hash_table(p) \
224 ((struct ppc_elf_link_hash_table *) (p)->hash)
226 /* Create an entry in a PPC ELF linker hash table. */
228 static struct bfd_hash_entry
*
229 ppc_elf_link_hash_newfunc (struct bfd_hash_entry
*entry
,
230 struct bfd_hash_table
*table
,
233 /* Allocate the structure if it has not already been allocated by a
237 entry
= bfd_hash_allocate (table
,
238 sizeof (struct ppc_elf_link_hash_entry
));
243 /* Call the allocation method of the superclass. */
244 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
247 ppc_elf_hash_entry (entry
)->linker_section_pointer
= NULL
;
248 ppc_elf_hash_entry (entry
)->dyn_relocs
= NULL
;
249 ppc_elf_hash_entry (entry
)->tls_mask
= 0;
255 /* Create a PPC ELF linker hash table. */
257 static struct bfd_link_hash_table
*
258 ppc_elf_link_hash_table_create (bfd
*abfd
)
260 struct ppc_elf_link_hash_table
*ret
;
262 ret
= bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table
));
266 if (! _bfd_elf_link_hash_table_init (&ret
->elf
, abfd
,
267 ppc_elf_link_hash_newfunc
))
273 return &ret
->elf
.root
;
276 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
277 copying dynamic variables from a shared lib into an app's dynbss
278 section, and instead use a dynamic relocation to point into the
280 #define ELIMINATE_COPY_RELOCS 1
282 /* Copy the extra info we tack onto an elf_link_hash_entry. */
285 ppc_elf_copy_indirect_symbol (const struct elf_backend_data
*bed
,
286 struct elf_link_hash_entry
*dir
,
287 struct elf_link_hash_entry
*ind
)
289 struct ppc_elf_link_hash_entry
*edir
, *eind
;
291 edir
= (struct ppc_elf_link_hash_entry
*) dir
;
292 eind
= (struct ppc_elf_link_hash_entry
*) ind
;
294 if (eind
->dyn_relocs
!= NULL
)
296 if (edir
->dyn_relocs
!= NULL
)
298 struct ppc_elf_dyn_relocs
**pp
;
299 struct ppc_elf_dyn_relocs
*p
;
301 if (ind
->root
.type
== bfd_link_hash_indirect
)
304 /* Add reloc counts against the weak sym to the strong sym
305 list. Merge any entries against the same section. */
306 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
308 struct ppc_elf_dyn_relocs
*q
;
310 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
311 if (q
->sec
== p
->sec
)
313 q
->pc_count
+= p
->pc_count
;
314 q
->count
+= p
->count
;
321 *pp
= edir
->dyn_relocs
;
324 edir
->dyn_relocs
= eind
->dyn_relocs
;
325 eind
->dyn_relocs
= NULL
;
328 edir
->tls_mask
|= eind
->tls_mask
;
330 if (ELIMINATE_COPY_RELOCS
331 && ind
->root
.type
!= bfd_link_hash_indirect
332 && (dir
->elf_link_hash_flags
& ELF_LINK_HASH_DYNAMIC_ADJUSTED
) != 0)
333 /* If called to transfer flags for a weakdef during processing
334 of elf_adjust_dynamic_symbol, don't copy ELF_LINK_NON_GOT_REF.
335 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
336 dir
->elf_link_hash_flags
|=
337 (ind
->elf_link_hash_flags
& (ELF_LINK_HASH_REF_DYNAMIC
338 | ELF_LINK_HASH_REF_REGULAR
339 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
340 | ELF_LINK_HASH_NEEDS_PLT
));
342 _bfd_elf_link_hash_copy_indirect (bed
, dir
, ind
);
345 static reloc_howto_type
*ppc_elf_howto_table
[R_PPC_max
];
347 static reloc_howto_type ppc_elf_howto_raw
[] = {
348 /* This reloc does nothing. */
349 HOWTO (R_PPC_NONE
, /* type */
351 2, /* size (0 = byte, 1 = short, 2 = long) */
353 FALSE
, /* pc_relative */
355 complain_overflow_bitfield
, /* complain_on_overflow */
356 bfd_elf_generic_reloc
, /* special_function */
357 "R_PPC_NONE", /* name */
358 FALSE
, /* partial_inplace */
361 FALSE
), /* pcrel_offset */
363 /* A standard 32 bit relocation. */
364 HOWTO (R_PPC_ADDR32
, /* type */
366 2, /* size (0 = byte, 1 = short, 2 = long) */
368 FALSE
, /* pc_relative */
370 complain_overflow_bitfield
, /* complain_on_overflow */
371 bfd_elf_generic_reloc
, /* special_function */
372 "R_PPC_ADDR32", /* name */
373 FALSE
, /* partial_inplace */
375 0xffffffff, /* dst_mask */
376 FALSE
), /* pcrel_offset */
378 /* An absolute 26 bit branch; the lower two bits must be zero.
379 FIXME: we don't check that, we just clear them. */
380 HOWTO (R_PPC_ADDR24
, /* type */
382 2, /* size (0 = byte, 1 = short, 2 = long) */
384 FALSE
, /* pc_relative */
386 complain_overflow_bitfield
, /* complain_on_overflow */
387 bfd_elf_generic_reloc
, /* special_function */
388 "R_PPC_ADDR24", /* name */
389 FALSE
, /* partial_inplace */
391 0x3fffffc, /* dst_mask */
392 FALSE
), /* pcrel_offset */
394 /* A standard 16 bit relocation. */
395 HOWTO (R_PPC_ADDR16
, /* type */
397 1, /* size (0 = byte, 1 = short, 2 = long) */
399 FALSE
, /* pc_relative */
401 complain_overflow_bitfield
, /* complain_on_overflow */
402 bfd_elf_generic_reloc
, /* special_function */
403 "R_PPC_ADDR16", /* name */
404 FALSE
, /* partial_inplace */
406 0xffff, /* dst_mask */
407 FALSE
), /* pcrel_offset */
409 /* A 16 bit relocation without overflow. */
410 HOWTO (R_PPC_ADDR16_LO
, /* type */
412 1, /* size (0 = byte, 1 = short, 2 = long) */
414 FALSE
, /* pc_relative */
416 complain_overflow_dont
,/* complain_on_overflow */
417 bfd_elf_generic_reloc
, /* special_function */
418 "R_PPC_ADDR16_LO", /* name */
419 FALSE
, /* partial_inplace */
421 0xffff, /* dst_mask */
422 FALSE
), /* pcrel_offset */
424 /* The high order 16 bits of an address. */
425 HOWTO (R_PPC_ADDR16_HI
, /* type */
427 1, /* size (0 = byte, 1 = short, 2 = long) */
429 FALSE
, /* pc_relative */
431 complain_overflow_dont
, /* complain_on_overflow */
432 bfd_elf_generic_reloc
, /* special_function */
433 "R_PPC_ADDR16_HI", /* name */
434 FALSE
, /* partial_inplace */
436 0xffff, /* dst_mask */
437 FALSE
), /* pcrel_offset */
439 /* The high order 16 bits of an address, plus 1 if the contents of
440 the low 16 bits, treated as a signed number, is negative. */
441 HOWTO (R_PPC_ADDR16_HA
, /* type */
443 1, /* size (0 = byte, 1 = short, 2 = long) */
445 FALSE
, /* pc_relative */
447 complain_overflow_dont
, /* complain_on_overflow */
448 ppc_elf_addr16_ha_reloc
, /* special_function */
449 "R_PPC_ADDR16_HA", /* name */
450 FALSE
, /* partial_inplace */
452 0xffff, /* dst_mask */
453 FALSE
), /* pcrel_offset */
455 /* An absolute 16 bit branch; the lower two bits must be zero.
456 FIXME: we don't check that, we just clear them. */
457 HOWTO (R_PPC_ADDR14
, /* type */
459 2, /* size (0 = byte, 1 = short, 2 = long) */
461 FALSE
, /* pc_relative */
463 complain_overflow_bitfield
, /* complain_on_overflow */
464 bfd_elf_generic_reloc
, /* special_function */
465 "R_PPC_ADDR14", /* name */
466 FALSE
, /* partial_inplace */
468 0xfffc, /* dst_mask */
469 FALSE
), /* pcrel_offset */
471 /* An absolute 16 bit branch, for which bit 10 should be set to
472 indicate that the branch is expected to be taken. The lower two
473 bits must be zero. */
474 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
476 2, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE
, /* pc_relative */
480 complain_overflow_bitfield
, /* complain_on_overflow */
481 bfd_elf_generic_reloc
, /* special_function */
482 "R_PPC_ADDR14_BRTAKEN",/* name */
483 FALSE
, /* partial_inplace */
485 0xfffc, /* dst_mask */
486 FALSE
), /* pcrel_offset */
488 /* An absolute 16 bit branch, for which bit 10 should be set to
489 indicate that the branch is not expected to be taken. The lower
490 two bits must be zero. */
491 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
493 2, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_bitfield
, /* complain_on_overflow */
498 bfd_elf_generic_reloc
, /* special_function */
499 "R_PPC_ADDR14_BRNTAKEN",/* name */
500 FALSE
, /* partial_inplace */
502 0xfffc, /* dst_mask */
503 FALSE
), /* pcrel_offset */
505 /* A relative 26 bit branch; the lower two bits must be zero. */
506 HOWTO (R_PPC_REL24
, /* type */
508 2, /* size (0 = byte, 1 = short, 2 = long) */
510 TRUE
, /* pc_relative */
512 complain_overflow_signed
, /* complain_on_overflow */
513 bfd_elf_generic_reloc
, /* special_function */
514 "R_PPC_REL24", /* name */
515 FALSE
, /* partial_inplace */
517 0x3fffffc, /* dst_mask */
518 TRUE
), /* pcrel_offset */
520 /* A relative 16 bit branch; the lower two bits must be zero. */
521 HOWTO (R_PPC_REL14
, /* type */
523 2, /* size (0 = byte, 1 = short, 2 = long) */
525 TRUE
, /* pc_relative */
527 complain_overflow_signed
, /* complain_on_overflow */
528 bfd_elf_generic_reloc
, /* special_function */
529 "R_PPC_REL14", /* name */
530 FALSE
, /* partial_inplace */
532 0xfffc, /* dst_mask */
533 TRUE
), /* pcrel_offset */
535 /* A relative 16 bit branch. Bit 10 should be set to indicate that
536 the branch is expected to be taken. The lower two bits must be
538 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
540 2, /* size (0 = byte, 1 = short, 2 = long) */
542 TRUE
, /* pc_relative */
544 complain_overflow_signed
, /* complain_on_overflow */
545 bfd_elf_generic_reloc
, /* special_function */
546 "R_PPC_REL14_BRTAKEN", /* name */
547 FALSE
, /* partial_inplace */
549 0xfffc, /* dst_mask */
550 TRUE
), /* pcrel_offset */
552 /* A relative 16 bit branch. Bit 10 should be set to indicate that
553 the branch is not expected to be taken. The lower two bits must
555 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
557 2, /* size (0 = byte, 1 = short, 2 = long) */
559 TRUE
, /* pc_relative */
561 complain_overflow_signed
, /* complain_on_overflow */
562 bfd_elf_generic_reloc
, /* special_function */
563 "R_PPC_REL14_BRNTAKEN",/* name */
564 FALSE
, /* partial_inplace */
566 0xfffc, /* dst_mask */
567 TRUE
), /* pcrel_offset */
569 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
571 HOWTO (R_PPC_GOT16
, /* type */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
575 FALSE
, /* pc_relative */
577 complain_overflow_signed
, /* complain_on_overflow */
578 bfd_elf_generic_reloc
, /* special_function */
579 "R_PPC_GOT16", /* name */
580 FALSE
, /* partial_inplace */
582 0xffff, /* dst_mask */
583 FALSE
), /* pcrel_offset */
585 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
587 HOWTO (R_PPC_GOT16_LO
, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE
, /* pc_relative */
593 complain_overflow_dont
, /* complain_on_overflow */
594 bfd_elf_generic_reloc
, /* special_function */
595 "R_PPC_GOT16_LO", /* name */
596 FALSE
, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE
), /* pcrel_offset */
601 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
603 HOWTO (R_PPC_GOT16_HI
, /* type */
605 1, /* size (0 = byte, 1 = short, 2 = long) */
607 FALSE
, /* pc_relative */
609 complain_overflow_bitfield
, /* complain_on_overflow */
610 bfd_elf_generic_reloc
, /* special_function */
611 "R_PPC_GOT16_HI", /* name */
612 FALSE
, /* partial_inplace */
614 0xffff, /* dst_mask */
615 FALSE
), /* pcrel_offset */
617 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
619 HOWTO (R_PPC_GOT16_HA
, /* type */
621 1, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE
, /* pc_relative */
625 complain_overflow_bitfield
, /* complain_on_overflow */
626 ppc_elf_addr16_ha_reloc
, /* special_function */
627 "R_PPC_GOT16_HA", /* name */
628 FALSE
, /* partial_inplace */
630 0xffff, /* dst_mask */
631 FALSE
), /* pcrel_offset */
633 /* Like R_PPC_REL24, but referring to the procedure linkage table
634 entry for the symbol. */
635 HOWTO (R_PPC_PLTREL24
, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE
, /* pc_relative */
641 complain_overflow_signed
, /* complain_on_overflow */
642 bfd_elf_generic_reloc
, /* special_function */
643 "R_PPC_PLTREL24", /* name */
644 FALSE
, /* partial_inplace */
646 0x3fffffc, /* dst_mask */
647 TRUE
), /* pcrel_offset */
649 /* This is used only by the dynamic linker. The symbol should exist
650 both in the object being run and in some shared library. The
651 dynamic linker copies the data addressed by the symbol from the
652 shared library into the object, because the object being
653 run has to have the data at some particular address. */
654 HOWTO (R_PPC_COPY
, /* type */
656 2, /* size (0 = byte, 1 = short, 2 = long) */
658 FALSE
, /* pc_relative */
660 complain_overflow_bitfield
, /* complain_on_overflow */
661 bfd_elf_generic_reloc
, /* special_function */
662 "R_PPC_COPY", /* name */
663 FALSE
, /* partial_inplace */
666 FALSE
), /* pcrel_offset */
668 /* Like R_PPC_ADDR32, but used when setting global offset table
670 HOWTO (R_PPC_GLOB_DAT
, /* type */
672 2, /* size (0 = byte, 1 = short, 2 = long) */
674 FALSE
, /* pc_relative */
676 complain_overflow_bitfield
, /* complain_on_overflow */
677 bfd_elf_generic_reloc
, /* special_function */
678 "R_PPC_GLOB_DAT", /* name */
679 FALSE
, /* partial_inplace */
681 0xffffffff, /* dst_mask */
682 FALSE
), /* pcrel_offset */
684 /* Marks a procedure linkage table entry for a symbol. */
685 HOWTO (R_PPC_JMP_SLOT
, /* type */
687 2, /* 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_JMP_SLOT", /* name */
694 FALSE
, /* partial_inplace */
697 FALSE
), /* pcrel_offset */
699 /* Used only by the dynamic linker. When the object is run, this
700 longword is set to the load address of the object, plus the
702 HOWTO (R_PPC_RELATIVE
, /* type */
704 2, /* size (0 = byte, 1 = short, 2 = long) */
706 FALSE
, /* pc_relative */
708 complain_overflow_bitfield
, /* complain_on_overflow */
709 bfd_elf_generic_reloc
, /* special_function */
710 "R_PPC_RELATIVE", /* name */
711 FALSE
, /* partial_inplace */
713 0xffffffff, /* dst_mask */
714 FALSE
), /* pcrel_offset */
716 /* Like R_PPC_REL24, but uses the value of the symbol within the
717 object rather than the final value. Normally used for
718 _GLOBAL_OFFSET_TABLE_. */
719 HOWTO (R_PPC_LOCAL24PC
, /* type */
721 2, /* size (0 = byte, 1 = short, 2 = long) */
723 TRUE
, /* pc_relative */
725 complain_overflow_signed
, /* complain_on_overflow */
726 bfd_elf_generic_reloc
, /* special_function */
727 "R_PPC_LOCAL24PC", /* name */
728 FALSE
, /* partial_inplace */
730 0x3fffffc, /* dst_mask */
731 TRUE
), /* pcrel_offset */
733 /* Like R_PPC_ADDR32, but may be unaligned. */
734 HOWTO (R_PPC_UADDR32
, /* type */
736 2, /* size (0 = byte, 1 = short, 2 = long) */
738 FALSE
, /* pc_relative */
740 complain_overflow_bitfield
, /* complain_on_overflow */
741 bfd_elf_generic_reloc
, /* special_function */
742 "R_PPC_UADDR32", /* name */
743 FALSE
, /* partial_inplace */
745 0xffffffff, /* dst_mask */
746 FALSE
), /* pcrel_offset */
748 /* Like R_PPC_ADDR16, but may be unaligned. */
749 HOWTO (R_PPC_UADDR16
, /* type */
751 1, /* size (0 = byte, 1 = short, 2 = long) */
753 FALSE
, /* pc_relative */
755 complain_overflow_bitfield
, /* complain_on_overflow */
756 bfd_elf_generic_reloc
, /* special_function */
757 "R_PPC_UADDR16", /* name */
758 FALSE
, /* partial_inplace */
760 0xffff, /* dst_mask */
761 FALSE
), /* pcrel_offset */
763 /* 32-bit PC relative */
764 HOWTO (R_PPC_REL32
, /* type */
766 2, /* size (0 = byte, 1 = short, 2 = long) */
768 TRUE
, /* pc_relative */
770 complain_overflow_bitfield
, /* complain_on_overflow */
771 bfd_elf_generic_reloc
, /* special_function */
772 "R_PPC_REL32", /* name */
773 FALSE
, /* partial_inplace */
775 0xffffffff, /* dst_mask */
776 TRUE
), /* pcrel_offset */
778 /* 32-bit relocation to the symbol's procedure linkage table.
779 FIXME: not supported. */
780 HOWTO (R_PPC_PLT32
, /* type */
782 2, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE
, /* pc_relative */
786 complain_overflow_bitfield
, /* complain_on_overflow */
787 bfd_elf_generic_reloc
, /* special_function */
788 "R_PPC_PLT32", /* name */
789 FALSE
, /* partial_inplace */
792 FALSE
), /* pcrel_offset */
794 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
795 FIXME: not supported. */
796 HOWTO (R_PPC_PLTREL32
, /* type */
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 TRUE
, /* pc_relative */
802 complain_overflow_bitfield
, /* complain_on_overflow */
803 bfd_elf_generic_reloc
, /* special_function */
804 "R_PPC_PLTREL32", /* name */
805 FALSE
, /* partial_inplace */
808 TRUE
), /* pcrel_offset */
810 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
812 HOWTO (R_PPC_PLT16_LO
, /* type */
814 1, /* size (0 = byte, 1 = short, 2 = long) */
816 FALSE
, /* pc_relative */
818 complain_overflow_dont
, /* complain_on_overflow */
819 bfd_elf_generic_reloc
, /* special_function */
820 "R_PPC_PLT16_LO", /* name */
821 FALSE
, /* partial_inplace */
823 0xffff, /* dst_mask */
824 FALSE
), /* pcrel_offset */
826 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
828 HOWTO (R_PPC_PLT16_HI
, /* type */
830 1, /* size (0 = byte, 1 = short, 2 = long) */
832 FALSE
, /* pc_relative */
834 complain_overflow_bitfield
, /* complain_on_overflow */
835 bfd_elf_generic_reloc
, /* special_function */
836 "R_PPC_PLT16_HI", /* name */
837 FALSE
, /* partial_inplace */
839 0xffff, /* dst_mask */
840 FALSE
), /* pcrel_offset */
842 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
844 HOWTO (R_PPC_PLT16_HA
, /* type */
846 1, /* size (0 = byte, 1 = short, 2 = long) */
848 FALSE
, /* pc_relative */
850 complain_overflow_bitfield
, /* complain_on_overflow */
851 ppc_elf_addr16_ha_reloc
, /* special_function */
852 "R_PPC_PLT16_HA", /* name */
853 FALSE
, /* partial_inplace */
855 0xffff, /* dst_mask */
856 FALSE
), /* pcrel_offset */
858 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
860 HOWTO (R_PPC_SDAREL16
, /* 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_SDAREL16", /* name */
869 FALSE
, /* partial_inplace */
871 0xffff, /* dst_mask */
872 FALSE
), /* pcrel_offset */
874 /* 16-bit section relative relocation. */
875 HOWTO (R_PPC_SECTOFF
, /* type */
877 1, /* size (0 = byte, 1 = short, 2 = long) */
879 FALSE
, /* pc_relative */
881 complain_overflow_bitfield
, /* complain_on_overflow */
882 bfd_elf_generic_reloc
, /* special_function */
883 "R_PPC_SECTOFF", /* name */
884 FALSE
, /* partial_inplace */
886 0xffff, /* dst_mask */
887 FALSE
), /* pcrel_offset */
889 /* 16-bit lower half section relative relocation. */
890 HOWTO (R_PPC_SECTOFF_LO
, /* type */
892 1, /* size (0 = byte, 1 = short, 2 = long) */
894 FALSE
, /* pc_relative */
896 complain_overflow_dont
, /* complain_on_overflow */
897 bfd_elf_generic_reloc
, /* special_function */
898 "R_PPC_SECTOFF_LO", /* name */
899 FALSE
, /* partial_inplace */
901 0xffff, /* dst_mask */
902 FALSE
), /* pcrel_offset */
904 /* 16-bit upper half section relative relocation. */
905 HOWTO (R_PPC_SECTOFF_HI
, /* type */
907 1, /* size (0 = byte, 1 = short, 2 = long) */
909 FALSE
, /* pc_relative */
911 complain_overflow_bitfield
, /* complain_on_overflow */
912 bfd_elf_generic_reloc
, /* special_function */
913 "R_PPC_SECTOFF_HI", /* name */
914 FALSE
, /* partial_inplace */
916 0xffff, /* dst_mask */
917 FALSE
), /* pcrel_offset */
919 /* 16-bit upper half adjusted section relative relocation. */
920 HOWTO (R_PPC_SECTOFF_HA
, /* type */
922 1, /* size (0 = byte, 1 = short, 2 = long) */
924 FALSE
, /* pc_relative */
926 complain_overflow_bitfield
, /* complain_on_overflow */
927 ppc_elf_addr16_ha_reloc
, /* special_function */
928 "R_PPC_SECTOFF_HA", /* name */
929 FALSE
, /* partial_inplace */
931 0xffff, /* dst_mask */
932 FALSE
), /* pcrel_offset */
934 /* Marker reloc for TLS. */
937 2, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE
, /* pc_relative */
941 complain_overflow_dont
, /* complain_on_overflow */
942 bfd_elf_generic_reloc
, /* special_function */
943 "R_PPC_TLS", /* name */
944 FALSE
, /* partial_inplace */
947 FALSE
), /* pcrel_offset */
949 /* Computes the load module index of the load module that contains the
950 definition of its TLS sym. */
951 HOWTO (R_PPC_DTPMOD32
,
953 2, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE
, /* pc_relative */
957 complain_overflow_dont
, /* complain_on_overflow */
958 ppc_elf_unhandled_reloc
, /* special_function */
959 "R_PPC_DTPMOD32", /* name */
960 FALSE
, /* partial_inplace */
962 0xffffffff, /* dst_mask */
963 FALSE
), /* pcrel_offset */
965 /* Computes a dtv-relative displacement, the difference between the value
966 of sym+add and the base address of the thread-local storage block that
967 contains the definition of sym, minus 0x8000. */
968 HOWTO (R_PPC_DTPREL32
,
970 2, /* size (0 = byte, 1 = short, 2 = long) */
972 FALSE
, /* pc_relative */
974 complain_overflow_dont
, /* complain_on_overflow */
975 ppc_elf_unhandled_reloc
, /* special_function */
976 "R_PPC_DTPREL32", /* name */
977 FALSE
, /* partial_inplace */
979 0xffffffff, /* dst_mask */
980 FALSE
), /* pcrel_offset */
982 /* A 16 bit dtprel reloc. */
983 HOWTO (R_PPC_DTPREL16
,
985 1, /* size (0 = byte, 1 = short, 2 = long) */
987 FALSE
, /* pc_relative */
989 complain_overflow_signed
, /* complain_on_overflow */
990 ppc_elf_unhandled_reloc
, /* special_function */
991 "R_PPC_DTPREL16", /* name */
992 FALSE
, /* partial_inplace */
994 0xffff, /* dst_mask */
995 FALSE
), /* pcrel_offset */
997 /* Like DTPREL16, but no overflow. */
998 HOWTO (R_PPC_DTPREL16_LO
,
1000 1, /* size (0 = byte, 1 = short, 2 = long) */
1002 FALSE
, /* pc_relative */
1004 complain_overflow_dont
, /* complain_on_overflow */
1005 ppc_elf_unhandled_reloc
, /* special_function */
1006 "R_PPC_DTPREL16_LO", /* name */
1007 FALSE
, /* partial_inplace */
1009 0xffff, /* dst_mask */
1010 FALSE
), /* pcrel_offset */
1012 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1013 HOWTO (R_PPC_DTPREL16_HI
,
1014 16, /* rightshift */
1015 1, /* size (0 = byte, 1 = short, 2 = long) */
1017 FALSE
, /* pc_relative */
1019 complain_overflow_dont
, /* complain_on_overflow */
1020 ppc_elf_unhandled_reloc
, /* special_function */
1021 "R_PPC_DTPREL16_HI", /* name */
1022 FALSE
, /* partial_inplace */
1024 0xffff, /* dst_mask */
1025 FALSE
), /* pcrel_offset */
1027 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1028 HOWTO (R_PPC_DTPREL16_HA
,
1029 16, /* rightshift */
1030 1, /* size (0 = byte, 1 = short, 2 = long) */
1032 FALSE
, /* pc_relative */
1034 complain_overflow_dont
, /* complain_on_overflow */
1035 ppc_elf_unhandled_reloc
, /* special_function */
1036 "R_PPC_DTPREL16_HA", /* name */
1037 FALSE
, /* partial_inplace */
1039 0xffff, /* dst_mask */
1040 FALSE
), /* pcrel_offset */
1042 /* Computes a tp-relative displacement, the difference between the value of
1043 sym+add and the value of the thread pointer (r13). */
1044 HOWTO (R_PPC_TPREL32
,
1046 2, /* size (0 = byte, 1 = short, 2 = long) */
1048 FALSE
, /* pc_relative */
1050 complain_overflow_dont
, /* complain_on_overflow */
1051 ppc_elf_unhandled_reloc
, /* special_function */
1052 "R_PPC_TPREL32", /* name */
1053 FALSE
, /* partial_inplace */
1055 0xffffffff, /* dst_mask */
1056 FALSE
), /* pcrel_offset */
1058 /* A 16 bit tprel reloc. */
1059 HOWTO (R_PPC_TPREL16
,
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE
, /* pc_relative */
1065 complain_overflow_signed
, /* complain_on_overflow */
1066 ppc_elf_unhandled_reloc
, /* special_function */
1067 "R_PPC_TPREL16", /* name */
1068 FALSE
, /* partial_inplace */
1070 0xffff, /* dst_mask */
1071 FALSE
), /* pcrel_offset */
1073 /* Like TPREL16, but no overflow. */
1074 HOWTO (R_PPC_TPREL16_LO
,
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE
, /* pc_relative */
1080 complain_overflow_dont
, /* complain_on_overflow */
1081 ppc_elf_unhandled_reloc
, /* special_function */
1082 "R_PPC_TPREL16_LO", /* name */
1083 FALSE
, /* partial_inplace */
1085 0xffff, /* dst_mask */
1086 FALSE
), /* pcrel_offset */
1088 /* Like TPREL16_LO, but next higher group of 16 bits. */
1089 HOWTO (R_PPC_TPREL16_HI
,
1090 16, /* rightshift */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE
, /* pc_relative */
1095 complain_overflow_dont
, /* complain_on_overflow */
1096 ppc_elf_unhandled_reloc
, /* special_function */
1097 "R_PPC_TPREL16_HI", /* name */
1098 FALSE
, /* partial_inplace */
1100 0xffff, /* dst_mask */
1101 FALSE
), /* pcrel_offset */
1103 /* Like TPREL16_HI, but adjust for low 16 bits. */
1104 HOWTO (R_PPC_TPREL16_HA
,
1105 16, /* rightshift */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE
, /* pc_relative */
1110 complain_overflow_dont
, /* complain_on_overflow */
1111 ppc_elf_unhandled_reloc
, /* special_function */
1112 "R_PPC_TPREL16_HA", /* name */
1113 FALSE
, /* partial_inplace */
1115 0xffff, /* dst_mask */
1116 FALSE
), /* pcrel_offset */
1118 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1119 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1120 to the first entry. */
1121 HOWTO (R_PPC_GOT_TLSGD16
,
1123 1, /* size (0 = byte, 1 = short, 2 = long) */
1125 FALSE
, /* pc_relative */
1127 complain_overflow_signed
, /* complain_on_overflow */
1128 ppc_elf_unhandled_reloc
, /* special_function */
1129 "R_PPC_GOT_TLSGD16", /* name */
1130 FALSE
, /* partial_inplace */
1132 0xffff, /* dst_mask */
1133 FALSE
), /* pcrel_offset */
1135 /* Like GOT_TLSGD16, but no overflow. */
1136 HOWTO (R_PPC_GOT_TLSGD16_LO
,
1138 1, /* size (0 = byte, 1 = short, 2 = long) */
1140 FALSE
, /* pc_relative */
1142 complain_overflow_dont
, /* complain_on_overflow */
1143 ppc_elf_unhandled_reloc
, /* special_function */
1144 "R_PPC_GOT_TLSGD16_LO", /* name */
1145 FALSE
, /* partial_inplace */
1147 0xffff, /* dst_mask */
1148 FALSE
), /* pcrel_offset */
1150 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1151 HOWTO (R_PPC_GOT_TLSGD16_HI
,
1152 16, /* rightshift */
1153 1, /* size (0 = byte, 1 = short, 2 = long) */
1155 FALSE
, /* pc_relative */
1157 complain_overflow_dont
, /* complain_on_overflow */
1158 ppc_elf_unhandled_reloc
, /* special_function */
1159 "R_PPC_GOT_TLSGD16_HI", /* name */
1160 FALSE
, /* partial_inplace */
1162 0xffff, /* dst_mask */
1163 FALSE
), /* pcrel_offset */
1165 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1166 HOWTO (R_PPC_GOT_TLSGD16_HA
,
1167 16, /* rightshift */
1168 1, /* size (0 = byte, 1 = short, 2 = long) */
1170 FALSE
, /* pc_relative */
1172 complain_overflow_dont
, /* complain_on_overflow */
1173 ppc_elf_unhandled_reloc
, /* special_function */
1174 "R_PPC_GOT_TLSGD16_HA", /* name */
1175 FALSE
, /* partial_inplace */
1177 0xffff, /* dst_mask */
1178 FALSE
), /* pcrel_offset */
1180 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1181 with values (sym+add)@dtpmod and zero, and computes the offset to the
1183 HOWTO (R_PPC_GOT_TLSLD16
,
1185 1, /* size (0 = byte, 1 = short, 2 = long) */
1187 FALSE
, /* pc_relative */
1189 complain_overflow_signed
, /* complain_on_overflow */
1190 ppc_elf_unhandled_reloc
, /* special_function */
1191 "R_PPC_GOT_TLSLD16", /* name */
1192 FALSE
, /* partial_inplace */
1194 0xffff, /* dst_mask */
1195 FALSE
), /* pcrel_offset */
1197 /* Like GOT_TLSLD16, but no overflow. */
1198 HOWTO (R_PPC_GOT_TLSLD16_LO
,
1200 1, /* size (0 = byte, 1 = short, 2 = long) */
1202 FALSE
, /* pc_relative */
1204 complain_overflow_dont
, /* complain_on_overflow */
1205 ppc_elf_unhandled_reloc
, /* special_function */
1206 "R_PPC_GOT_TLSLD16_LO", /* name */
1207 FALSE
, /* partial_inplace */
1209 0xffff, /* dst_mask */
1210 FALSE
), /* pcrel_offset */
1212 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1213 HOWTO (R_PPC_GOT_TLSLD16_HI
,
1214 16, /* rightshift */
1215 1, /* size (0 = byte, 1 = short, 2 = long) */
1217 FALSE
, /* pc_relative */
1219 complain_overflow_dont
, /* complain_on_overflow */
1220 ppc_elf_unhandled_reloc
, /* special_function */
1221 "R_PPC_GOT_TLSLD16_HI", /* name */
1222 FALSE
, /* partial_inplace */
1224 0xffff, /* dst_mask */
1225 FALSE
), /* pcrel_offset */
1227 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1228 HOWTO (R_PPC_GOT_TLSLD16_HA
,
1229 16, /* rightshift */
1230 1, /* size (0 = byte, 1 = short, 2 = long) */
1232 FALSE
, /* pc_relative */
1234 complain_overflow_dont
, /* complain_on_overflow */
1235 ppc_elf_unhandled_reloc
, /* special_function */
1236 "R_PPC_GOT_TLSLD16_HA", /* name */
1237 FALSE
, /* partial_inplace */
1239 0xffff, /* dst_mask */
1240 FALSE
), /* pcrel_offset */
1242 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1243 the offset to the entry. */
1244 HOWTO (R_PPC_GOT_DTPREL16
,
1246 1, /* size (0 = byte, 1 = short, 2 = long) */
1248 FALSE
, /* pc_relative */
1250 complain_overflow_signed
, /* complain_on_overflow */
1251 ppc_elf_unhandled_reloc
, /* special_function */
1252 "R_PPC_GOT_DTPREL16", /* name */
1253 FALSE
, /* partial_inplace */
1255 0xffff, /* dst_mask */
1256 FALSE
), /* pcrel_offset */
1258 /* Like GOT_DTPREL16, but no overflow. */
1259 HOWTO (R_PPC_GOT_DTPREL16_LO
,
1261 1, /* size (0 = byte, 1 = short, 2 = long) */
1263 FALSE
, /* pc_relative */
1265 complain_overflow_dont
, /* complain_on_overflow */
1266 ppc_elf_unhandled_reloc
, /* special_function */
1267 "R_PPC_GOT_DTPREL16_LO", /* name */
1268 FALSE
, /* partial_inplace */
1270 0xffff, /* dst_mask */
1271 FALSE
), /* pcrel_offset */
1273 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1274 HOWTO (R_PPC_GOT_DTPREL16_HI
,
1275 16, /* rightshift */
1276 1, /* size (0 = byte, 1 = short, 2 = long) */
1278 FALSE
, /* pc_relative */
1280 complain_overflow_dont
, /* complain_on_overflow */
1281 ppc_elf_unhandled_reloc
, /* special_function */
1282 "R_PPC_GOT_DTPREL16_HI", /* name */
1283 FALSE
, /* partial_inplace */
1285 0xffff, /* dst_mask */
1286 FALSE
), /* pcrel_offset */
1288 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1289 HOWTO (R_PPC_GOT_DTPREL16_HA
,
1290 16, /* rightshift */
1291 1, /* size (0 = byte, 1 = short, 2 = long) */
1293 FALSE
, /* pc_relative */
1295 complain_overflow_dont
, /* complain_on_overflow */
1296 ppc_elf_unhandled_reloc
, /* special_function */
1297 "R_PPC_GOT_DTPREL16_HA", /* name */
1298 FALSE
, /* partial_inplace */
1300 0xffff, /* dst_mask */
1301 FALSE
), /* pcrel_offset */
1303 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1304 offset to the entry. */
1305 HOWTO (R_PPC_GOT_TPREL16
,
1307 1, /* size (0 = byte, 1 = short, 2 = long) */
1309 FALSE
, /* pc_relative */
1311 complain_overflow_signed
, /* complain_on_overflow */
1312 ppc_elf_unhandled_reloc
, /* special_function */
1313 "R_PPC_GOT_TPREL16", /* name */
1314 FALSE
, /* partial_inplace */
1316 0xffff, /* dst_mask */
1317 FALSE
), /* pcrel_offset */
1319 /* Like GOT_TPREL16, but no overflow. */
1320 HOWTO (R_PPC_GOT_TPREL16_LO
,
1322 1, /* size (0 = byte, 1 = short, 2 = long) */
1324 FALSE
, /* pc_relative */
1326 complain_overflow_dont
, /* complain_on_overflow */
1327 ppc_elf_unhandled_reloc
, /* special_function */
1328 "R_PPC_GOT_TPREL16_LO", /* name */
1329 FALSE
, /* partial_inplace */
1331 0xffff, /* dst_mask */
1332 FALSE
), /* pcrel_offset */
1334 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1335 HOWTO (R_PPC_GOT_TPREL16_HI
,
1336 16, /* rightshift */
1337 1, /* size (0 = byte, 1 = short, 2 = long) */
1339 FALSE
, /* pc_relative */
1341 complain_overflow_dont
, /* complain_on_overflow */
1342 ppc_elf_unhandled_reloc
, /* special_function */
1343 "R_PPC_GOT_TPREL16_HI", /* name */
1344 FALSE
, /* partial_inplace */
1346 0xffff, /* dst_mask */
1347 FALSE
), /* pcrel_offset */
1349 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1350 HOWTO (R_PPC_GOT_TPREL16_HA
,
1351 16, /* rightshift */
1352 1, /* size (0 = byte, 1 = short, 2 = long) */
1354 FALSE
, /* pc_relative */
1356 complain_overflow_dont
, /* complain_on_overflow */
1357 ppc_elf_unhandled_reloc
, /* special_function */
1358 "R_PPC_GOT_TPREL16_HA", /* name */
1359 FALSE
, /* partial_inplace */
1361 0xffff, /* dst_mask */
1362 FALSE
), /* pcrel_offset */
1364 /* The remaining relocs are from the Embedded ELF ABI, and are not
1365 in the SVR4 ELF ABI. */
1367 /* 32 bit value resulting from the addend minus the symbol. */
1368 HOWTO (R_PPC_EMB_NADDR32
, /* type */
1370 2, /* size (0 = byte, 1 = short, 2 = long) */
1372 FALSE
, /* pc_relative */
1374 complain_overflow_bitfield
, /* complain_on_overflow */
1375 bfd_elf_generic_reloc
, /* special_function */
1376 "R_PPC_EMB_NADDR32", /* name */
1377 FALSE
, /* partial_inplace */
1379 0xffffffff, /* dst_mask */
1380 FALSE
), /* pcrel_offset */
1382 /* 16 bit value resulting from the addend minus the symbol. */
1383 HOWTO (R_PPC_EMB_NADDR16
, /* type */
1385 1, /* size (0 = byte, 1 = short, 2 = long) */
1387 FALSE
, /* pc_relative */
1389 complain_overflow_bitfield
, /* complain_on_overflow */
1390 bfd_elf_generic_reloc
, /* special_function */
1391 "R_PPC_EMB_NADDR16", /* name */
1392 FALSE
, /* partial_inplace */
1394 0xffff, /* dst_mask */
1395 FALSE
), /* pcrel_offset */
1397 /* 16 bit value resulting from the addend minus the symbol. */
1398 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
1400 1, /* size (0 = byte, 1 = short, 2 = long) */
1402 FALSE
, /* pc_relative */
1404 complain_overflow_dont
,/* complain_on_overflow */
1405 bfd_elf_generic_reloc
, /* special_function */
1406 "R_PPC_EMB_ADDR16_LO", /* name */
1407 FALSE
, /* partial_inplace */
1409 0xffff, /* dst_mask */
1410 FALSE
), /* pcrel_offset */
1412 /* The high order 16 bits of the addend minus the symbol. */
1413 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
1414 16, /* rightshift */
1415 1, /* size (0 = byte, 1 = short, 2 = long) */
1417 FALSE
, /* pc_relative */
1419 complain_overflow_dont
, /* complain_on_overflow */
1420 bfd_elf_generic_reloc
, /* special_function */
1421 "R_PPC_EMB_NADDR16_HI", /* name */
1422 FALSE
, /* partial_inplace */
1424 0xffff, /* dst_mask */
1425 FALSE
), /* pcrel_offset */
1427 /* The high order 16 bits of the result of the addend minus the address,
1428 plus 1 if the contents of the low 16 bits, treated as a signed number,
1430 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
1431 16, /* rightshift */
1432 1, /* size (0 = byte, 1 = short, 2 = long) */
1434 FALSE
, /* pc_relative */
1436 complain_overflow_dont
, /* complain_on_overflow */
1437 ppc_elf_addr16_ha_reloc
, /* special_function */
1438 "R_PPC_EMB_NADDR16_HA", /* name */
1439 FALSE
, /* partial_inplace */
1441 0xffff, /* dst_mask */
1442 FALSE
), /* pcrel_offset */
1444 /* 16 bit value resulting from allocating a 4 byte word to hold an
1445 address in the .sdata section, and returning the offset from
1446 _SDA_BASE_ for that relocation. */
1447 HOWTO (R_PPC_EMB_SDAI16
, /* type */
1449 1, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE
, /* pc_relative */
1453 complain_overflow_bitfield
, /* complain_on_overflow */
1454 bfd_elf_generic_reloc
, /* special_function */
1455 "R_PPC_EMB_SDAI16", /* name */
1456 FALSE
, /* partial_inplace */
1458 0xffff, /* dst_mask */
1459 FALSE
), /* pcrel_offset */
1461 /* 16 bit value resulting from allocating a 4 byte word to hold an
1462 address in the .sdata2 section, and returning the offset from
1463 _SDA2_BASE_ for that relocation. */
1464 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
1466 1, /* size (0 = byte, 1 = short, 2 = long) */
1468 FALSE
, /* pc_relative */
1470 complain_overflow_bitfield
, /* complain_on_overflow */
1471 bfd_elf_generic_reloc
, /* special_function */
1472 "R_PPC_EMB_SDA2I16", /* name */
1473 FALSE
, /* partial_inplace */
1475 0xffff, /* dst_mask */
1476 FALSE
), /* pcrel_offset */
1478 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1479 small data items. */
1480 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
1482 1, /* size (0 = byte, 1 = short, 2 = long) */
1484 FALSE
, /* pc_relative */
1486 complain_overflow_signed
, /* complain_on_overflow */
1487 bfd_elf_generic_reloc
, /* special_function */
1488 "R_PPC_EMB_SDA2REL", /* name */
1489 FALSE
, /* partial_inplace */
1491 0xffff, /* dst_mask */
1492 FALSE
), /* pcrel_offset */
1494 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1495 signed offset from the appropriate base, and filling in the register
1496 field with the appropriate register (0, 2, or 13). */
1497 HOWTO (R_PPC_EMB_SDA21
, /* type */
1499 2, /* size (0 = byte, 1 = short, 2 = long) */
1501 FALSE
, /* pc_relative */
1503 complain_overflow_signed
, /* complain_on_overflow */
1504 bfd_elf_generic_reloc
, /* special_function */
1505 "R_PPC_EMB_SDA21", /* name */
1506 FALSE
, /* partial_inplace */
1508 0xffff, /* dst_mask */
1509 FALSE
), /* pcrel_offset */
1511 /* Relocation not handled: R_PPC_EMB_MRKREF */
1512 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1513 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1514 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1515 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1516 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1518 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1519 in the 16 bit signed offset from the appropriate base, and filling in the
1520 register field with the appropriate register (0, 2, or 13). */
1521 HOWTO (R_PPC_EMB_RELSDA
, /* type */
1523 1, /* size (0 = byte, 1 = short, 2 = long) */
1525 TRUE
, /* pc_relative */
1527 complain_overflow_signed
, /* complain_on_overflow */
1528 bfd_elf_generic_reloc
, /* special_function */
1529 "R_PPC_EMB_RELSDA", /* name */
1530 FALSE
, /* partial_inplace */
1532 0xffff, /* dst_mask */
1533 FALSE
), /* pcrel_offset */
1535 /* Phony relocs to handle branch stubs. */
1536 HOWTO (R_PPC_RELAX32
, /* type */
1540 FALSE
, /* pc_relative */
1542 complain_overflow_dont
, /* complain_on_overflow */
1543 bfd_elf_generic_reloc
, /* special_function */
1544 "R_PPC_RELAX32", /* name */
1545 FALSE
, /* partial_inplace */
1548 FALSE
), /* pcrel_offset */
1550 HOWTO (R_PPC_RELAX32PC
, /* type */
1554 FALSE
, /* pc_relative */
1556 complain_overflow_dont
, /* complain_on_overflow */
1557 bfd_elf_generic_reloc
, /* special_function */
1558 "R_PPC_RELAX32PC", /* name */
1559 FALSE
, /* partial_inplace */
1562 FALSE
), /* pcrel_offset */
1564 /* GNU extension to record C++ vtable hierarchy. */
1565 HOWTO (R_PPC_GNU_VTINHERIT
, /* type */
1567 0, /* size (0 = byte, 1 = short, 2 = long) */
1569 FALSE
, /* pc_relative */
1571 complain_overflow_dont
, /* complain_on_overflow */
1572 NULL
, /* special_function */
1573 "R_PPC_GNU_VTINHERIT", /* name */
1574 FALSE
, /* partial_inplace */
1577 FALSE
), /* pcrel_offset */
1579 /* GNU extension to record C++ vtable member usage. */
1580 HOWTO (R_PPC_GNU_VTENTRY
, /* type */
1582 0, /* size (0 = byte, 1 = short, 2 = long) */
1584 FALSE
, /* pc_relative */
1586 complain_overflow_dont
, /* complain_on_overflow */
1587 NULL
, /* special_function */
1588 "R_PPC_GNU_VTENTRY", /* name */
1589 FALSE
, /* partial_inplace */
1592 FALSE
), /* pcrel_offset */
1594 /* Phony reloc to handle AIX style TOC entries. */
1595 HOWTO (R_PPC_TOC16
, /* type */
1597 1, /* size (0 = byte, 1 = short, 2 = long) */
1599 FALSE
, /* pc_relative */
1601 complain_overflow_signed
, /* complain_on_overflow */
1602 bfd_elf_generic_reloc
, /* special_function */
1603 "R_PPC_TOC16", /* name */
1604 FALSE
, /* partial_inplace */
1606 0xffff, /* dst_mask */
1607 FALSE
), /* pcrel_offset */
1610 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1613 ppc_elf_howto_init (void)
1615 unsigned int i
, type
;
1618 i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]);
1621 type
= ppc_elf_howto_raw
[i
].type
;
1622 if (type
>= (sizeof (ppc_elf_howto_table
)
1623 / sizeof (ppc_elf_howto_table
[0])))
1625 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
1629 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
1631 static const int shared_stub_entry
[] =
1633 0x7c0802a6, /* mflr 0 */
1634 0x429f0005, /* bcl 20, 31, .Lxxx */
1635 0x7d6802a6, /* mflr 11 */
1636 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
1637 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
1638 0x7c0803a6, /* mtlr 0 */
1639 0x7d6903a6, /* mtctr 11 */
1640 0x4e800420, /* bctr */
1643 static const int stub_entry
[] =
1645 0x3d600000, /* lis 11,xxx@ha */
1646 0x396b0000, /* addi 11,11,xxx@l */
1647 0x7d6903a6, /* mtctr 11 */
1648 0x4e800420, /* bctr */
1653 ppc_elf_relax_section (bfd
*abfd
,
1655 struct bfd_link_info
*link_info
,
1660 struct one_fixup
*next
;
1666 Elf_Internal_Shdr
*symtab_hdr
;
1667 bfd_byte
*contents
= NULL
;
1668 Elf_Internal_Sym
*isymbuf
= NULL
;
1669 Elf_Internal_Rela
*internal_relocs
= NULL
;
1670 Elf_Internal_Rela
*irel
, *irelend
;
1671 struct one_fixup
*fixups
= NULL
;
1672 bfd_boolean changed
;
1673 struct ppc_elf_link_hash_table
*ppc_info
;
1674 bfd_size_type trampoff
;
1678 /* Nothing to do if there are no relocations. */
1679 if ((isec
->flags
& SEC_RELOC
) == 0 || isec
->reloc_count
== 0)
1682 trampoff
= (isec
->size
+ 3) & (bfd_vma
) -4;
1683 /* Space for a branch around any trampolines. */
1686 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1688 /* Get a copy of the native relocations. */
1689 internal_relocs
= _bfd_elf_link_read_relocs (abfd
, isec
, NULL
, NULL
,
1690 link_info
->keep_memory
);
1691 if (internal_relocs
== NULL
)
1694 ppc_info
= ppc_elf_hash_table (link_info
);
1695 irelend
= internal_relocs
+ isec
->reloc_count
;
1697 for (irel
= internal_relocs
; irel
< irelend
; irel
++)
1699 unsigned long r_type
= ELF32_R_TYPE (irel
->r_info
);
1700 bfd_vma symaddr
, reladdr
, toff
, roff
;
1702 struct one_fixup
*f
;
1703 size_t insn_offset
= 0;
1704 bfd_vma max_branch_offset
, val
;
1707 unsigned char sym_type
;
1712 case R_PPC_LOCAL24PC
:
1713 case R_PPC_PLTREL24
:
1714 max_branch_offset
= 1 << 25;
1718 case R_PPC_REL14_BRTAKEN
:
1719 case R_PPC_REL14_BRNTAKEN
:
1720 max_branch_offset
= 1 << 15;
1727 /* Get the value of the symbol referred to by the reloc. */
1728 if (ELF32_R_SYM (irel
->r_info
) < symtab_hdr
->sh_info
)
1730 /* A local symbol. */
1731 Elf_Internal_Sym
*isym
;
1733 /* Read this BFD's local symbols. */
1734 if (isymbuf
== NULL
)
1736 isymbuf
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
1737 if (isymbuf
== NULL
)
1738 isymbuf
= bfd_elf_get_elf_syms (abfd
, symtab_hdr
,
1739 symtab_hdr
->sh_info
, 0,
1744 isym
= isymbuf
+ ELF32_R_SYM (irel
->r_info
);
1745 if (isym
->st_shndx
== SHN_UNDEF
)
1746 continue; /* We can't do anything with undefined symbols. */
1747 else if (isym
->st_shndx
== SHN_ABS
)
1748 tsec
= bfd_abs_section_ptr
;
1749 else if (isym
->st_shndx
== SHN_COMMON
)
1750 tsec
= bfd_com_section_ptr
;
1752 tsec
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
1754 toff
= isym
->st_value
;
1755 sym_type
= ELF_ST_TYPE (isym
->st_info
);
1759 /* Global symbol handling. */
1761 struct elf_link_hash_entry
*h
;
1763 indx
= ELF32_R_SYM (irel
->r_info
) - symtab_hdr
->sh_info
;
1764 h
= elf_sym_hashes (abfd
)[indx
];
1766 while (h
->root
.type
== bfd_link_hash_indirect
1767 || h
->root
.type
== bfd_link_hash_warning
)
1768 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
1770 if (r_type
== R_PPC_PLTREL24
1771 && ppc_info
->plt
!= NULL
1772 && h
->plt
.offset
!= (bfd_vma
) -1)
1774 tsec
= ppc_info
->plt
;
1775 toff
= h
->plt
.offset
;
1777 else if (h
->root
.type
== bfd_link_hash_defined
1778 || h
->root
.type
== bfd_link_hash_defweak
)
1780 tsec
= h
->root
.u
.def
.section
;
1781 toff
= h
->root
.u
.def
.value
;
1789 /* If the branch and target are in the same section, you have
1790 no hope of adding stubs. We'll error out later should the
1795 /* There probably isn't any reason to handle symbols in
1796 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
1797 attribute for a code section, and we are only looking at
1798 branches. However, implement it correctly here as a
1799 reference for other target relax_section functions. */
1800 if (0 && tsec
->sec_info_type
== ELF_INFO_TYPE_MERGE
)
1802 /* At this stage in linking, no SEC_MERGE symbol has been
1803 adjusted, so all references to such symbols need to be
1804 passed through _bfd_merged_section_offset. (Later, in
1805 relocate_section, all SEC_MERGE symbols *except* for
1806 section symbols have been adjusted.)
1808 gas may reduce relocations against symbols in SEC_MERGE
1809 sections to a relocation against the section symbol when
1810 the original addend was zero. When the reloc is against
1811 a section symbol we should include the addend in the
1812 offset passed to _bfd_merged_section_offset, since the
1813 location of interest is the original symbol. On the
1814 other hand, an access to "sym+addend" where "sym" is not
1815 a section symbol should not include the addend; Such an
1816 access is presumed to be an offset from "sym"; The
1817 location of interest is just "sym". */
1818 if (sym_type
== STT_SECTION
)
1819 toff
+= irel
->r_addend
;
1821 toff
= _bfd_merged_section_offset (abfd
, &tsec
,
1822 elf_section_data (tsec
)->sec_info
,
1825 if (sym_type
!= STT_SECTION
)
1826 toff
+= irel
->r_addend
;
1829 toff
+= irel
->r_addend
;
1831 symaddr
= tsec
->output_section
->vma
+ tsec
->output_offset
+ toff
;
1833 roff
= irel
->r_offset
;
1834 reladdr
= isec
->output_section
->vma
+ isec
->output_offset
+ roff
;
1836 /* If the branch is in range, no need to do anything. */
1837 if (symaddr
- reladdr
+ max_branch_offset
< 2 * max_branch_offset
)
1840 /* Look for an existing fixup to this address. */
1841 for (f
= fixups
; f
; f
= f
->next
)
1842 if (f
->tsec
== tsec
&& f
->toff
== toff
)
1848 unsigned long stub_rtype
;
1850 val
= trampoff
- roff
;
1851 if (val
>= max_branch_offset
)
1852 /* Oh dear, we can't reach a trampoline. Don't try to add
1853 one. We'll report an error later. */
1856 if (link_info
->shared
)
1858 size
= 4 * ARRAY_SIZE (shared_stub_entry
);
1860 stub_rtype
= R_PPC_RELAX32PC
;
1864 size
= 4 * ARRAY_SIZE (stub_entry
);
1866 stub_rtype
= R_PPC_RELAX32
;
1869 /* Hijack the old relocation. Since we need two
1870 relocations for this use a "composite" reloc. */
1871 irel
->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel
->r_info
),
1873 irel
->r_offset
= trampoff
+ insn_offset
;
1875 /* Record the fixup so we don't do it again this section. */
1876 f
= bfd_malloc (sizeof (*f
));
1880 f
->trampoff
= trampoff
;
1887 val
= f
->trampoff
- roff
;
1888 if (val
>= max_branch_offset
)
1891 /* Nop out the reloc, since we're finalizing things here. */
1892 irel
->r_info
= ELF32_R_INFO (0, R_PPC_NONE
);
1895 /* Get the section contents. */
1896 if (contents
== NULL
)
1898 /* Get cached copy if it exists. */
1899 if (elf_section_data (isec
)->this_hdr
.contents
!= NULL
)
1900 contents
= elf_section_data (isec
)->this_hdr
.contents
;
1903 /* Go get them off disk. */
1904 if (!bfd_malloc_and_get_section (abfd
, isec
, &contents
))
1909 /* Fix up the existing branch to hit the trampoline. */
1910 hit_addr
= contents
+ roff
;
1914 case R_PPC_LOCAL24PC
:
1915 case R_PPC_PLTREL24
:
1916 t0
= bfd_get_32 (abfd
, hit_addr
);
1918 t0
|= val
& 0x3fffffc;
1919 bfd_put_32 (abfd
, t0
, hit_addr
);
1923 case R_PPC_REL14_BRTAKEN
:
1924 case R_PPC_REL14_BRNTAKEN
:
1925 t0
= bfd_get_32 (abfd
, hit_addr
);
1928 bfd_put_32 (abfd
, t0
, hit_addr
);
1933 /* Write out the trampolines. */
1934 changed
= fixups
!= NULL
;
1944 struct one_fixup
*f
= fixups
;
1945 fixups
= fixups
->next
;
1950 contents
= bfd_realloc (contents
, trampoff
);
1951 if (contents
== NULL
)
1954 isec
->size
= (isec
->size
+ 3) & (bfd_vma
) -4;
1955 /* Branch around the trampolines. */
1956 val
= trampoff
- isec
->size
+ 0x48000000;
1957 dest
= contents
+ isec
->size
;
1958 isec
->size
= trampoff
;
1959 bfd_put_32 (abfd
, val
, dest
);
1962 if (link_info
->shared
)
1964 stub
= shared_stub_entry
;
1965 size
= ARRAY_SIZE (shared_stub_entry
);
1970 size
= ARRAY_SIZE (stub_entry
);
1974 while (dest
< contents
+ trampoff
)
1976 bfd_put_32 (abfd
, stub
[i
], dest
);
1982 BFD_ASSERT (i
== 0);
1986 && symtab_hdr
->contents
!= (unsigned char *) isymbuf
)
1988 if (! link_info
->keep_memory
)
1992 /* Cache the symbols for elf_link_input_bfd. */
1993 symtab_hdr
->contents
= (unsigned char *) isymbuf
;
1997 if (contents
!= NULL
1998 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
2000 if (!changed
&& !link_info
->keep_memory
)
2004 /* Cache the section contents for elf_link_input_bfd. */
2005 elf_section_data (isec
)->this_hdr
.contents
= contents
;
2009 if (elf_section_data (isec
)->relocs
!= internal_relocs
)
2012 free (internal_relocs
);
2014 elf_section_data (isec
)->relocs
= internal_relocs
;
2021 if (isymbuf
!= NULL
&& (unsigned char *) isymbuf
!= symtab_hdr
->contents
)
2023 if (contents
!= NULL
2024 && elf_section_data (isec
)->this_hdr
.contents
!= contents
)
2026 if (internal_relocs
!= NULL
2027 && elf_section_data (isec
)->relocs
!= internal_relocs
)
2028 free (internal_relocs
);
2032 static reloc_howto_type
*
2033 ppc_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2034 bfd_reloc_code_real_type code
)
2036 enum elf_ppc_reloc_type r
;
2038 /* Initialize howto table if not already done. */
2039 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2040 ppc_elf_howto_init ();
2047 case BFD_RELOC_NONE
: r
= R_PPC_NONE
; break;
2048 case BFD_RELOC_32
: r
= R_PPC_ADDR32
; break;
2049 case BFD_RELOC_PPC_BA26
: r
= R_PPC_ADDR24
; break;
2050 case BFD_RELOC_16
: r
= R_PPC_ADDR16
; break;
2051 case BFD_RELOC_LO16
: r
= R_PPC_ADDR16_LO
; break;
2052 case BFD_RELOC_HI16
: r
= R_PPC_ADDR16_HI
; break;
2053 case BFD_RELOC_HI16_S
: r
= R_PPC_ADDR16_HA
; break;
2054 case BFD_RELOC_PPC_BA16
: r
= R_PPC_ADDR14
; break;
2055 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC_ADDR14_BRTAKEN
; break;
2056 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC_ADDR14_BRNTAKEN
; break;
2057 case BFD_RELOC_PPC_B26
: r
= R_PPC_REL24
; break;
2058 case BFD_RELOC_PPC_B16
: r
= R_PPC_REL14
; break;
2059 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC_REL14_BRTAKEN
; break;
2060 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC_REL14_BRNTAKEN
; break;
2061 case BFD_RELOC_16_GOTOFF
: r
= R_PPC_GOT16
; break;
2062 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC_GOT16_LO
; break;
2063 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC_GOT16_HI
; break;
2064 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC_GOT16_HA
; break;
2065 case BFD_RELOC_24_PLT_PCREL
: r
= R_PPC_PLTREL24
; break;
2066 case BFD_RELOC_PPC_COPY
: r
= R_PPC_COPY
; break;
2067 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC_GLOB_DAT
; break;
2068 case BFD_RELOC_PPC_LOCAL24PC
: r
= R_PPC_LOCAL24PC
; break;
2069 case BFD_RELOC_32_PCREL
: r
= R_PPC_REL32
; break;
2070 case BFD_RELOC_32_PLTOFF
: r
= R_PPC_PLT32
; break;
2071 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC_PLTREL32
; break;
2072 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC_PLT16_LO
; break;
2073 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC_PLT16_HI
; break;
2074 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC_PLT16_HA
; break;
2075 case BFD_RELOC_GPREL16
: r
= R_PPC_SDAREL16
; break;
2076 case BFD_RELOC_16_BASEREL
: r
= R_PPC_SECTOFF
; break;
2077 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC_SECTOFF_LO
; break;
2078 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC_SECTOFF_HI
; break;
2079 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC_SECTOFF_HA
; break;
2080 case BFD_RELOC_CTOR
: r
= R_PPC_ADDR32
; break;
2081 case BFD_RELOC_PPC_TOC16
: r
= R_PPC_TOC16
; break;
2082 case BFD_RELOC_PPC_TLS
: r
= R_PPC_TLS
; break;
2083 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC_DTPMOD32
; break;
2084 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC_TPREL16
; break;
2085 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC_TPREL16_LO
; break;
2086 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC_TPREL16_HI
; break;
2087 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC_TPREL16_HA
; break;
2088 case BFD_RELOC_PPC_TPREL
: r
= R_PPC_TPREL32
; break;
2089 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC_DTPREL16
; break;
2090 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC_DTPREL16_LO
; break;
2091 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC_DTPREL16_HI
; break;
2092 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC_DTPREL16_HA
; break;
2093 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC_DTPREL32
; break;
2094 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC_GOT_TLSGD16
; break;
2095 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC_GOT_TLSGD16_LO
; break;
2096 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC_GOT_TLSGD16_HI
; break;
2097 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC_GOT_TLSGD16_HA
; break;
2098 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC_GOT_TLSLD16
; break;
2099 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC_GOT_TLSLD16_LO
; break;
2100 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC_GOT_TLSLD16_HI
; break;
2101 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC_GOT_TLSLD16_HA
; break;
2102 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC_GOT_TPREL16
; break;
2103 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC_GOT_TPREL16_LO
; break;
2104 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC_GOT_TPREL16_HI
; break;
2105 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC_GOT_TPREL16_HA
; break;
2106 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC_GOT_DTPREL16
; break;
2107 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC_GOT_DTPREL16_LO
; break;
2108 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC_GOT_DTPREL16_HI
; break;
2109 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC_GOT_DTPREL16_HA
; break;
2110 case BFD_RELOC_PPC_EMB_NADDR32
: r
= R_PPC_EMB_NADDR32
; break;
2111 case BFD_RELOC_PPC_EMB_NADDR16
: r
= R_PPC_EMB_NADDR16
; break;
2112 case BFD_RELOC_PPC_EMB_NADDR16_LO
: r
= R_PPC_EMB_NADDR16_LO
; break;
2113 case BFD_RELOC_PPC_EMB_NADDR16_HI
: r
= R_PPC_EMB_NADDR16_HI
; break;
2114 case BFD_RELOC_PPC_EMB_NADDR16_HA
: r
= R_PPC_EMB_NADDR16_HA
; break;
2115 case BFD_RELOC_PPC_EMB_SDAI16
: r
= R_PPC_EMB_SDAI16
; break;
2116 case BFD_RELOC_PPC_EMB_SDA2I16
: r
= R_PPC_EMB_SDA2I16
; break;
2117 case BFD_RELOC_PPC_EMB_SDA2REL
: r
= R_PPC_EMB_SDA2REL
; break;
2118 case BFD_RELOC_PPC_EMB_SDA21
: r
= R_PPC_EMB_SDA21
; break;
2119 case BFD_RELOC_PPC_EMB_MRKREF
: r
= R_PPC_EMB_MRKREF
; break;
2120 case BFD_RELOC_PPC_EMB_RELSEC16
: r
= R_PPC_EMB_RELSEC16
; break;
2121 case BFD_RELOC_PPC_EMB_RELST_LO
: r
= R_PPC_EMB_RELST_LO
; break;
2122 case BFD_RELOC_PPC_EMB_RELST_HI
: r
= R_PPC_EMB_RELST_HI
; break;
2123 case BFD_RELOC_PPC_EMB_RELST_HA
: r
= R_PPC_EMB_RELST_HA
; break;
2124 case BFD_RELOC_PPC_EMB_BIT_FLD
: r
= R_PPC_EMB_BIT_FLD
; break;
2125 case BFD_RELOC_PPC_EMB_RELSDA
: r
= R_PPC_EMB_RELSDA
; break;
2126 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC_GNU_VTINHERIT
; break;
2127 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC_GNU_VTENTRY
; break;
2130 return ppc_elf_howto_table
[r
];
2133 /* Set the howto pointer for a PowerPC ELF reloc. */
2136 ppc_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
,
2138 Elf_Internal_Rela
*dst
)
2140 /* Initialize howto table if not already done. */
2141 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
2142 ppc_elf_howto_init ();
2144 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
2145 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
2148 /* Handle the R_PPC_ADDR16_HA reloc. */
2150 static bfd_reloc_status_type
2151 ppc_elf_addr16_ha_reloc (bfd
*abfd ATTRIBUTE_UNUSED
,
2152 arelent
*reloc_entry
,
2154 void *data ATTRIBUTE_UNUSED
,
2155 asection
*input_section
,
2157 char **error_message ATTRIBUTE_UNUSED
)
2162 if (output_bfd
!= NULL
)
2164 reloc_entry
->address
+= input_section
->output_offset
;
2165 return bfd_reloc_ok
;
2168 sz
= input_section
->rawsize
? input_section
->rawsize
: input_section
->size
;
2169 if (reloc_entry
->address
> sz
)
2170 return bfd_reloc_outofrange
;
2172 if (bfd_is_com_section (symbol
->section
))
2175 relocation
= symbol
->value
;
2177 relocation
+= symbol
->section
->output_section
->vma
;
2178 relocation
+= symbol
->section
->output_offset
;
2179 relocation
+= reloc_entry
->addend
;
2181 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
2183 return bfd_reloc_continue
;
2186 static bfd_reloc_status_type
2187 ppc_elf_unhandled_reloc (bfd
*abfd
,
2188 arelent
*reloc_entry
,
2191 asection
*input_section
,
2193 char **error_message
)
2195 /* If this is a relocatable link (output_bfd test tells us), just
2196 call the generic function. Any adjustment will be done at final
2198 if (output_bfd
!= NULL
)
2199 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2200 input_section
, output_bfd
, error_message
);
2202 if (error_message
!= NULL
)
2204 static char buf
[60];
2205 sprintf (buf
, _("generic linker can't handle %s"),
2206 reloc_entry
->howto
->name
);
2207 *error_message
= buf
;
2209 return bfd_reloc_dangerous
;
2212 /* Fix bad default arch selected for a 32 bit input bfd when the
2213 default is 64 bit. */
2216 ppc_elf_object_p (bfd
*abfd
)
2218 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 64)
2220 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2222 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS32
)
2224 /* Relies on arch after 64 bit default being 32 bit default. */
2225 abfd
->arch_info
= abfd
->arch_info
->next
;
2226 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 32);
2232 /* Function to set whether a module needs the -mrelocatable bit set. */
2235 ppc_elf_set_private_flags (bfd
*abfd
, flagword flags
)
2237 BFD_ASSERT (!elf_flags_init (abfd
)
2238 || elf_elfheader (abfd
)->e_flags
== flags
);
2240 elf_elfheader (abfd
)->e_flags
= flags
;
2241 elf_flags_init (abfd
) = TRUE
;
2245 /* Merge backend specific data from an object file to the output
2246 object file when linking. */
2249 ppc_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2255 /* Check if we have the same endianess. */
2256 if (! _bfd_generic_verify_endian_match (ibfd
, obfd
))
2259 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
2260 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
2263 new_flags
= elf_elfheader (ibfd
)->e_flags
;
2264 old_flags
= elf_elfheader (obfd
)->e_flags
;
2265 if (!elf_flags_init (obfd
))
2267 /* First call, no flags set. */
2268 elf_flags_init (obfd
) = TRUE
;
2269 elf_elfheader (obfd
)->e_flags
= new_flags
;
2272 /* Compatible flags are ok. */
2273 else if (new_flags
== old_flags
)
2276 /* Incompatible flags. */
2279 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
2280 to be linked with either. */
2282 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
2283 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
2286 (*_bfd_error_handler
)
2287 (_("%s: compiled with -mrelocatable and linked with "
2288 "modules compiled normally"),
2289 bfd_archive_filename (ibfd
));
2291 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
2292 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
2295 (*_bfd_error_handler
)
2296 (_("%s: compiled normally and linked with "
2297 "modules compiled with -mrelocatable"),
2298 bfd_archive_filename (ibfd
));
2301 /* The output is -mrelocatable-lib iff both the input files are. */
2302 if (! (new_flags
& EF_PPC_RELOCATABLE_LIB
))
2303 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
2305 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
2306 but each input file is either -mrelocatable or -mrelocatable-lib. */
2307 if (! (elf_elfheader (obfd
)->e_flags
& EF_PPC_RELOCATABLE_LIB
)
2308 && (new_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
))
2309 && (old_flags
& (EF_PPC_RELOCATABLE_LIB
| EF_PPC_RELOCATABLE
)))
2310 elf_elfheader (obfd
)->e_flags
|= EF_PPC_RELOCATABLE
;
2312 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
2313 any module uses it. */
2314 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
2316 new_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
2317 old_flags
&= ~(EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
2319 /* Warn about any other mismatches. */
2320 if (new_flags
!= old_flags
)
2323 (*_bfd_error_handler
)
2324 (_("%s: uses different e_flags (0x%lx) fields "
2325 "than previous modules (0x%lx)"),
2326 bfd_archive_filename (ibfd
), (long) new_flags
, (long) old_flags
);
2331 bfd_set_error (bfd_error_bad_value
);
2339 /* Handle a PowerPC specific section when reading an object file. This
2340 is called when elfcode.h finds a section with an unknown type. */
2343 ppc_elf_section_from_shdr (bfd
*abfd
, Elf_Internal_Shdr
*hdr
, const char *name
)
2348 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
2351 newsect
= hdr
->bfd_section
;
2352 flags
= bfd_get_section_flags (abfd
, newsect
);
2353 if (hdr
->sh_flags
& SHF_EXCLUDE
)
2354 flags
|= SEC_EXCLUDE
;
2356 if (hdr
->sh_type
== SHT_ORDERED
)
2357 flags
|= SEC_SORT_ENTRIES
;
2359 bfd_set_section_flags (abfd
, newsect
, flags
);
2363 /* Set up any other section flags and such that may be necessary. */
2366 ppc_elf_fake_sections (bfd
*abfd ATTRIBUTE_UNUSED
,
2367 Elf_Internal_Shdr
*shdr
,
2370 if ((asect
->flags
& SEC_EXCLUDE
) != 0)
2371 shdr
->sh_flags
|= SHF_EXCLUDE
;
2373 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
2374 shdr
->sh_type
= SHT_ORDERED
;
2379 /* Find a linker generated pointer with a given addend and type. */
2381 static elf_linker_section_pointers_t
*
2382 elf_find_pointer_linker_section
2383 (elf_linker_section_pointers_t
*linker_pointers
,
2385 elf_linker_section_t
*lsect
)
2387 for ( ; linker_pointers
!= NULL
; linker_pointers
= linker_pointers
->next
)
2388 if (lsect
== linker_pointers
->lsect
&& addend
== linker_pointers
->addend
)
2389 return linker_pointers
;
2394 /* Allocate a pointer to live in a linker created section. */
2397 elf_create_pointer_linker_section (bfd
*abfd
,
2398 struct bfd_link_info
*info
,
2399 elf_linker_section_t
*lsect
,
2400 struct elf_link_hash_entry
*h
,
2401 const Elf_Internal_Rela
*rel
)
2403 elf_linker_section_pointers_t
**ptr_linker_section_ptr
= NULL
;
2404 elf_linker_section_pointers_t
*linker_section_ptr
;
2405 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
2408 BFD_ASSERT (lsect
!= NULL
);
2410 /* Is this a global symbol? */
2413 struct ppc_elf_link_hash_entry
*eh
;
2415 /* Has this symbol already been allocated? If so, our work is done. */
2416 eh
= (struct ppc_elf_link_hash_entry
*) h
;
2417 if (elf_find_pointer_linker_section (eh
->linker_section_pointer
,
2422 ptr_linker_section_ptr
= &eh
->linker_section_pointer
;
2423 /* Make sure this symbol is output as a dynamic symbol. */
2424 if (h
->dynindx
== -1)
2426 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
2430 if (lsect
->rel_section
)
2431 lsect
->rel_section
->size
+= sizeof (Elf32_External_Rela
);
2435 /* Allocation of a pointer to a local symbol. */
2436 elf_linker_section_pointers_t
**ptr
= elf_local_ptr_offsets (abfd
);
2438 /* Allocate a table to hold the local symbols if first time. */
2441 unsigned int num_symbols
= elf_tdata (abfd
)->symtab_hdr
.sh_info
;
2444 amt
*= sizeof (elf_linker_section_pointers_t
*);
2445 ptr
= bfd_zalloc (abfd
, amt
);
2450 elf_local_ptr_offsets (abfd
) = ptr
;
2453 /* Has this symbol already been allocated? If so, our work is done. */
2454 if (elf_find_pointer_linker_section (ptr
[r_symndx
],
2459 ptr_linker_section_ptr
= &ptr
[r_symndx
];
2463 /* If we are generating a shared object, we need to
2464 output a R_<xxx>_RELATIVE reloc so that the
2465 dynamic linker can adjust this GOT entry. */
2466 BFD_ASSERT (lsect
->rel_section
!= NULL
);
2467 lsect
->rel_section
->size
+= sizeof (Elf32_External_Rela
);
2471 /* Allocate space for a pointer in the linker section, and allocate
2472 a new pointer record from internal memory. */
2473 BFD_ASSERT (ptr_linker_section_ptr
!= NULL
);
2474 amt
= sizeof (elf_linker_section_pointers_t
);
2475 linker_section_ptr
= bfd_alloc (abfd
, amt
);
2477 if (!linker_section_ptr
)
2480 linker_section_ptr
->next
= *ptr_linker_section_ptr
;
2481 linker_section_ptr
->addend
= rel
->r_addend
;
2482 linker_section_ptr
->lsect
= lsect
;
2483 linker_section_ptr
->written_address_p
= FALSE
;
2484 *ptr_linker_section_ptr
= linker_section_ptr
;
2486 linker_section_ptr
->offset
= lsect
->section
->size
;
2487 lsect
->section
->size
+= 4;
2491 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2492 lsect
->name
, (long) linker_section_ptr
->offset
,
2493 (long) lsect
->section
->size
);
2499 #define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR)
2501 /* Fill in the address for a pointer generated in a linker section. */
2504 elf_finish_pointer_linker_section (bfd
*output_bfd
,
2506 struct bfd_link_info
*info
,
2507 elf_linker_section_t
*lsect
,
2508 struct elf_link_hash_entry
*h
,
2510 const Elf_Internal_Rela
*rel
,
2513 elf_linker_section_pointers_t
*linker_section_ptr
;
2515 BFD_ASSERT (lsect
!= NULL
);
2519 /* Handle global symbol. */
2520 struct ppc_elf_link_hash_entry
*eh
;
2522 eh
= (struct ppc_elf_link_hash_entry
*) h
;
2524 = elf_find_pointer_linker_section (eh
->linker_section_pointer
,
2528 BFD_ASSERT (linker_section_ptr
!= NULL
);
2530 if (! elf_hash_table (info
)->dynamic_sections_created
2533 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
)))
2535 /* This is actually a static link, or it is a
2536 -Bsymbolic link and the symbol is defined
2537 locally. We must initialize this entry in the
2540 When doing a dynamic link, we create a .rela.<xxx>
2541 relocation entry to initialize the value. This
2542 is done in the finish_dynamic_symbol routine. */
2543 if (!linker_section_ptr
->written_address_p
)
2545 linker_section_ptr
->written_address_p
= TRUE
;
2546 bfd_put_ptr (output_bfd
,
2547 relocation
+ linker_section_ptr
->addend
,
2548 (lsect
->section
->contents
2549 + linker_section_ptr
->offset
));
2555 /* Handle local symbol. */
2556 unsigned long r_symndx
= ELF32_R_SYM (rel
->r_info
);
2557 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
) != NULL
);
2558 BFD_ASSERT (elf_local_ptr_offsets (input_bfd
)[r_symndx
] != NULL
);
2559 linker_section_ptr
= (elf_find_pointer_linker_section
2560 (elf_local_ptr_offsets (input_bfd
)[r_symndx
],
2564 BFD_ASSERT (linker_section_ptr
!= NULL
);
2566 /* Write out pointer if it hasn't been rewritten out before. */
2567 if (!linker_section_ptr
->written_address_p
)
2569 linker_section_ptr
->written_address_p
= TRUE
;
2570 bfd_put_ptr (output_bfd
, relocation
+ linker_section_ptr
->addend
,
2571 lsect
->section
->contents
+ linker_section_ptr
->offset
);
2575 /* We need to generate a relative reloc for the dynamic
2578 asection
*srel
= lsect
->rel_section
;
2579 Elf_Internal_Rela outrel
[MAX_INT_RELS_PER_EXT_REL
];
2581 const struct elf_backend_data
*bed
;
2584 BFD_ASSERT (srel
!= NULL
);
2586 bed
= get_elf_backend_data (output_bfd
);
2587 for (i
= 0; i
< bed
->s
->int_rels_per_ext_rel
; i
++)
2589 outrel
[i
].r_offset
= (lsect
->section
->output_section
->vma
2590 + lsect
->section
->output_offset
2591 + linker_section_ptr
->offset
);
2592 outrel
[i
].r_info
= 0;
2593 outrel
[i
].r_addend
= 0;
2595 outrel
[0].r_info
= ELF32_R_INFO (0, relative_reloc
);
2596 erel
= lsect
->section
->contents
;
2597 erel
+= (elf_section_data (lsect
->section
)->rel_count
++
2598 * sizeof (Elf32_External_Rela
));
2599 bfd_elf32_swap_reloca_out (output_bfd
, outrel
, erel
);
2604 relocation
= (lsect
->section
->output_offset
2605 + linker_section_ptr
->offset
2606 - lsect
->sym_offset
);
2610 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
2611 lsect
->name
, (long) relocation
, (long) relocation
);
2614 /* Subtract out the addend, because it will get added back in by the normal
2616 return relocation
- linker_section_ptr
->addend
;
2619 /* Create a special linker section */
2620 static elf_linker_section_t
*
2621 ppc_elf_create_linker_section (bfd
*abfd
,
2622 struct bfd_link_info
*info
,
2623 enum elf_linker_section_enum which
)
2625 elf_linker_section_t
*lsect
;
2626 struct ppc_elf_link_hash_table
*htab
= ppc_elf_hash_table (info
);
2627 asection
*s
, *sym_sec
;
2631 const char *rel_name
;
2632 const char *sym_name
;
2635 /* Both of these sections are (technically) created by the user
2636 putting data in them, so they shouldn't be marked
2639 The linker creates them so it has somewhere to attach their
2640 respective symbols. In fact, if they were empty it would
2641 be OK to leave the symbol set to 0 (or any random number), because
2642 the appropriate register should never be used. */
2643 flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
2652 case LINKER_SECTION_SDATA
: /* .sdata/.sbss section */
2654 rel_name
= ".rela.sdata";
2655 sym_name
= "_SDA_BASE_";
2658 case LINKER_SECTION_SDATA2
: /* .sdata2/.sbss2 section */
2660 rel_name
= ".rela.sdata2";
2661 sym_name
= "_SDA2_BASE_";
2662 flags
|= SEC_READONLY
;
2666 /* Record the first bfd that needs the special sections. */
2667 if (!htab
->elf
.dynobj
)
2668 htab
->elf
.dynobj
= abfd
;
2670 amt
= sizeof (elf_linker_section_t
);
2671 lsect
= bfd_zalloc (htab
->elf
.dynobj
, amt
);
2673 lsect
->sym_offset
= sym_offset
;
2675 /* See if the sections already exist. */
2676 sym_sec
= s
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
2677 if (s
== NULL
|| (s
->flags
& flags
) != flags
)
2679 s
= bfd_make_section_anyway (htab
->elf
.dynobj
, name
);
2681 || !bfd_set_section_flags (htab
->elf
.dynobj
, s
, flags
))
2683 if (sym_sec
== NULL
)
2688 if (bfd_get_section_alignment (htab
->elf
.dynobj
, s
) < 2
2689 && !bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
2692 s
->size
= align_power (s
->size
, 2);
2695 fprintf (stderr
, "Creating section %s, current size = %ld\n",
2696 name
, (long) s
->size
);
2701 struct elf_link_hash_entry
*h
;
2702 struct bfd_link_hash_entry
*bh
;
2705 fprintf (stderr
, "Adding %s to section %s\n", sym_name
, name
);
2707 bh
= bfd_link_hash_lookup (info
->hash
, sym_name
,
2708 FALSE
, FALSE
, FALSE
);
2710 if ((bh
== NULL
|| bh
->type
== bfd_link_hash_undefined
)
2711 && !(_bfd_generic_link_add_one_symbol
2712 (info
, abfd
, sym_name
, BSF_GLOBAL
, sym_sec
, sym_offset
, NULL
,
2713 FALSE
, get_elf_backend_data (abfd
)->collect
, &bh
)))
2715 h
= (struct elf_link_hash_entry
*) bh
;
2717 h
->type
= STT_OBJECT
;
2718 lsect
->sym_hash
= h
;
2721 && ! bfd_elf_link_record_dynamic_symbol (info
, h
))
2727 s
= bfd_make_section_anyway (htab
->elf
.dynobj
, rel_name
);
2728 lsect
->rel_section
= s
;
2729 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2730 | SEC_LINKER_CREATED
| SEC_READONLY
);
2732 || ! bfd_set_section_flags (htab
->elf
.dynobj
, s
, flags
)
2733 || ! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, 2))
2740 /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we
2741 need to bump up the number of section headers. */
2744 ppc_elf_additional_program_headers (bfd
*abfd
)
2751 s
= bfd_get_section_by_name (abfd
, ".interp");
2755 s
= bfd_get_section_by_name (abfd
, ".sbss2");
2756 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0 && s
->size
> 0)
2759 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
2760 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0 && s
->size
> 0)
2766 /* Modify the segment map if needed. */
2769 ppc_elf_modify_segment_map (bfd
*abfd ATTRIBUTE_UNUSED
,
2770 struct bfd_link_info
*info ATTRIBUTE_UNUSED
)
2775 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2778 ppc_elf_create_got (bfd
*abfd
, struct bfd_link_info
*info
)
2780 struct ppc_elf_link_hash_table
*htab
;
2784 if (!_bfd_elf_create_got_section (abfd
, info
))
2787 htab
= ppc_elf_hash_table (info
);
2788 htab
->got
= s
= bfd_get_section_by_name (abfd
, ".got");
2792 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2793 | SEC_LINKER_CREATED
);
2794 if (!bfd_set_section_flags (abfd
, s
, flags
))
2797 htab
->relgot
= bfd_make_section (abfd
, ".rela.got");
2799 || ! bfd_set_section_flags (abfd
, htab
->relgot
,
2800 (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
2801 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
2803 || ! bfd_set_section_alignment (abfd
, htab
->relgot
, 2))
2809 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2810 to output sections (just like _bfd_elf_create_dynamic_sections has
2811 to create .dynbss and .rela.bss). */
2814 ppc_elf_create_dynamic_sections (bfd
*abfd
, struct bfd_link_info
*info
)
2816 struct ppc_elf_link_hash_table
*htab
;
2820 htab
= ppc_elf_hash_table (info
);
2822 if (htab
->got
== NULL
2823 && !ppc_elf_create_got (abfd
, info
))
2826 if (!_bfd_elf_create_dynamic_sections (abfd
, info
))
2829 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
2830 | SEC_LINKER_CREATED
);
2832 htab
->dynbss
= bfd_get_section_by_name (abfd
, ".dynbss");
2833 htab
->dynsbss
= s
= bfd_make_section (abfd
, ".dynsbss");
2835 || ! bfd_set_section_flags (abfd
, s
, SEC_ALLOC
))
2840 htab
->relbss
= bfd_get_section_by_name (abfd
, ".rela.bss");
2841 htab
->relsbss
= s
= bfd_make_section (abfd
, ".rela.sbss");
2843 || ! bfd_set_section_flags (abfd
, s
, flags
| SEC_READONLY
)
2844 || ! bfd_set_section_alignment (abfd
, s
, 2))
2848 htab
->relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
2849 htab
->plt
= s
= bfd_get_section_by_name (abfd
, ".plt");
2853 flags
= SEC_ALLOC
| SEC_CODE
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
;
2854 return bfd_set_section_flags (abfd
, s
, flags
);
2857 /* Adjust a symbol defined by a dynamic object and referenced by a
2858 regular object. The current definition is in some section of the
2859 dynamic object, but we're not including those sections. We have to
2860 change the definition to something the rest of the link can
2864 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
2865 struct elf_link_hash_entry
*h
)
2867 struct ppc_elf_link_hash_table
*htab
;
2869 unsigned int power_of_two
;
2872 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n",
2873 h
->root
.root
.string
);
2876 /* Make sure we know what is going on here. */
2877 htab
= ppc_elf_hash_table (info
);
2878 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
2879 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
2880 || h
->weakdef
!= NULL
2881 || ((h
->elf_link_hash_flags
2882 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
2883 && (h
->elf_link_hash_flags
2884 & ELF_LINK_HASH_REF_REGULAR
) != 0
2885 && (h
->elf_link_hash_flags
2886 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
2888 /* Deal with function syms. */
2889 if (h
->type
== STT_FUNC
2890 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
2892 /* Clear procedure linkage table information for any symbol that
2893 won't need a .plt entry. */
2894 if (h
->plt
.refcount
<= 0
2895 || SYMBOL_CALLS_LOCAL (info
, h
)
2896 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
2897 && h
->root
.type
== bfd_link_hash_undefweak
))
2899 /* A PLT entry is not required/allowed when:
2901 1. We are not using ld.so; because then the PLT entry
2902 can't be set up, so we can't use one. In this case,
2903 ppc_elf_adjust_dynamic_symbol won't even be called.
2905 2. GC has rendered the entry unused.
2907 3. We know for certain that a call to this symbol
2908 will go to this object, or will remain undefined. */
2909 h
->plt
.offset
= (bfd_vma
) -1;
2910 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
2915 h
->plt
.offset
= (bfd_vma
) -1;
2917 /* If this is a weak symbol, and there is a real definition, the
2918 processor independent code will have arranged for us to see the
2919 real definition first, and we can just use the same value. */
2920 if (h
->weakdef
!= NULL
)
2922 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
2923 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
2924 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
2925 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
2926 if (ELIMINATE_COPY_RELOCS
)
2927 h
->elf_link_hash_flags
2928 = ((h
->elf_link_hash_flags
& ~ELF_LINK_NON_GOT_REF
)
2929 | (h
->weakdef
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
));
2933 /* This is a reference to a symbol defined by a dynamic object which
2934 is not a function. */
2936 /* If we are creating a shared library, we must presume that the
2937 only references to the symbol are via the global offset table.
2938 For such cases we need not do anything here; the relocations will
2939 be handled correctly by relocate_section. */
2943 /* If there are no references to this symbol that do not use the
2944 GOT, we don't need to generate a copy reloc. */
2945 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0)
2948 if (ELIMINATE_COPY_RELOCS
)
2950 struct ppc_elf_dyn_relocs
*p
;
2951 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
2953 s
= p
->sec
->output_section
;
2954 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
2958 /* If we didn't find any dynamic relocs in read-only sections, then
2959 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
2962 h
->elf_link_hash_flags
&= ~ELF_LINK_NON_GOT_REF
;
2967 /* We must allocate the symbol in our .dynbss section, which will
2968 become part of the .bss section of the executable. There will be
2969 an entry for this symbol in the .dynsym section. The dynamic
2970 object will contain position independent code, so all references
2971 from the dynamic object to this symbol will go through the global
2972 offset table. The dynamic linker will use the .dynsym entry to
2973 determine the address it must put in the global offset table, so
2974 both the dynamic object and the regular object will refer to the
2975 same memory location for the variable.
2977 Of course, if the symbol is sufficiently small, we must instead
2978 allocate it in .sbss. FIXME: It would be better to do this if and
2979 only if there were actually SDAREL relocs for that symbol. */
2981 if (h
->size
<= elf_gp_size (htab
->elf
.dynobj
))
2985 BFD_ASSERT (s
!= NULL
);
2987 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
2988 copy the initial value out of the dynamic object and into the
2989 runtime process image. We need to remember the offset into the
2990 .rela.bss section we are going to use. */
2991 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
2995 if (h
->size
<= elf_gp_size (htab
->elf
.dynobj
))
2996 srel
= htab
->relsbss
;
2998 srel
= htab
->relbss
;
2999 BFD_ASSERT (srel
!= NULL
);
3000 srel
->size
+= sizeof (Elf32_External_Rela
);
3001 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
3004 /* We need to figure out the alignment required for this symbol. I
3005 have no idea how ELF linkers handle this. */
3006 power_of_two
= bfd_log2 (h
->size
);
3007 if (power_of_two
> 4)
3010 /* Apply the required alignment. */
3011 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
3012 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
3014 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
3018 /* Define the symbol as being at this point in the section. */
3019 h
->root
.u
.def
.section
= s
;
3020 h
->root
.u
.def
.value
= s
->size
;
3022 /* Increment the section size to make room for the symbol. */
3028 /* Of those relocs that might be copied as dynamic relocs, this macro
3029 selects those that must be copied when linking a shared library,
3030 even when the symbol is local. */
3032 #define MUST_BE_DYN_RELOC(RTYPE) \
3033 ((RTYPE) != R_PPC_REL24 \
3034 && (RTYPE) != R_PPC_REL14 \
3035 && (RTYPE) != R_PPC_REL14_BRTAKEN \
3036 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
3037 && (RTYPE) != R_PPC_REL32)
3039 /* Allocate space in associated reloc sections for dynamic relocs. */
3042 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
3044 struct bfd_link_info
*info
= inf
;
3045 struct ppc_elf_link_hash_entry
*eh
;
3046 struct ppc_elf_link_hash_table
*htab
;
3047 struct ppc_elf_dyn_relocs
*p
;
3049 if (h
->root
.type
== bfd_link_hash_indirect
)
3052 if (h
->root
.type
== bfd_link_hash_warning
)
3053 /* When warning symbols are created, they **replace** the "real"
3054 entry in the hash table, thus we never get to see the real
3055 symbol in a hash traversal. So look at it now. */
3056 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3058 htab
= ppc_elf_hash_table (info
);
3059 if (htab
->elf
.dynamic_sections_created
3060 && h
->plt
.refcount
> 0)
3062 /* Make sure this symbol is output as a dynamic symbol. */
3063 if (h
->dynindx
== -1
3064 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
3066 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3071 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h
))
3073 asection
*s
= htab
->plt
;
3075 /* If this is the first .plt entry, make room for the special
3078 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
3080 /* The PowerPC PLT is actually composed of two parts, the
3081 first part is 2 words (for a load and a jump), and then
3082 there is a remaining word available at the end. */
3083 h
->plt
.offset
= (PLT_INITIAL_ENTRY_SIZE
3085 * ((s
->size
- PLT_INITIAL_ENTRY_SIZE
)
3086 / PLT_ENTRY_SIZE
)));
3088 /* If this symbol is not defined in a regular file, and we
3089 are not generating a shared library, then set the symbol
3090 to this location in the .plt. This is required to make
3091 function pointers compare as equal between the normal
3092 executable and the shared library. */
3094 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
3096 h
->root
.u
.def
.section
= s
;
3097 h
->root
.u
.def
.value
= h
->plt
.offset
;
3100 /* Make room for this entry. After the 8192nd entry, room
3101 for two entries is allocated. */
3102 s
->size
+= PLT_ENTRY_SIZE
;
3103 if ((s
->size
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
3104 > PLT_NUM_SINGLE_ENTRIES
)
3105 s
->size
+= PLT_ENTRY_SIZE
;
3107 /* We also need to make an entry in the .rela.plt section. */
3108 htab
->relplt
->size
+= sizeof (Elf32_External_Rela
);
3112 h
->plt
.offset
= (bfd_vma
) -1;
3113 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
3118 h
->plt
.offset
= (bfd_vma
) -1;
3119 h
->elf_link_hash_flags
&= ~ELF_LINK_HASH_NEEDS_PLT
;
3122 eh
= (struct ppc_elf_link_hash_entry
*) h
;
3123 if (eh
->elf
.got
.refcount
> 0)
3125 /* Make sure this symbol is output as a dynamic symbol. */
3126 if (eh
->elf
.dynindx
== -1
3127 && (eh
->elf
.elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
3129 if (!bfd_elf_link_record_dynamic_symbol (info
, &eh
->elf
))
3133 if (eh
->tls_mask
== (TLS_TLS
| TLS_LD
)
3134 && !(eh
->elf
.elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
3135 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3136 eh
->elf
.got
.offset
= (bfd_vma
) -1;
3140 eh
->elf
.got
.offset
= htab
->got
->size
;
3141 if ((eh
->tls_mask
& TLS_TLS
) != 0)
3143 if ((eh
->tls_mask
& TLS_LD
) != 0)
3144 htab
->got
->size
+= 8;
3145 if ((eh
->tls_mask
& TLS_GD
) != 0)
3146 htab
->got
->size
+= 8;
3147 if ((eh
->tls_mask
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
3148 htab
->got
->size
+= 4;
3149 if ((eh
->tls_mask
& TLS_DTPREL
) != 0)
3150 htab
->got
->size
+= 4;
3153 htab
->got
->size
+= 4;
3154 dyn
= htab
->elf
.dynamic_sections_created
;
3156 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, &eh
->elf
))
3157 && (ELF_ST_VISIBILITY (eh
->elf
.other
) == STV_DEFAULT
3158 || eh
->elf
.root
.type
!= bfd_link_hash_undefweak
))
3160 /* All the entries we allocated need relocs. */
3162 += ((htab
->got
->size
- eh
->elf
.got
.offset
) / 4
3163 * sizeof (Elf32_External_Rela
));
3164 /* Except LD only needs one. */
3165 if ((eh
->tls_mask
& TLS_LD
) != 0)
3166 htab
->relgot
->size
-= sizeof (Elf32_External_Rela
);
3171 eh
->elf
.got
.offset
= (bfd_vma
) -1;
3173 if (eh
->dyn_relocs
== NULL
)
3176 /* In the shared -Bsymbolic case, discard space allocated for
3177 dynamic pc-relative relocs against symbols which turn out to be
3178 defined in regular objects. For the normal shared case, discard
3179 space for relocs that have become local due to symbol visibility
3184 /* Relocs that use pc_count are those that appear on a call insn,
3185 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3186 generated via assembly. We want calls to protected symbols to
3187 resolve directly to the function rather than going via the plt.
3188 If people want function pointer comparisons to work as expected
3189 then they should avoid writing weird assembly. */
3190 if (SYMBOL_CALLS_LOCAL (info
, h
))
3192 struct ppc_elf_dyn_relocs
**pp
;
3194 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
3196 p
->count
-= p
->pc_count
;
3205 /* Also discard relocs on undefined weak syms with non-default
3207 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
3208 && h
->root
.type
== bfd_link_hash_undefweak
)
3209 eh
->dyn_relocs
= NULL
;
3211 /* Make sure undefined weak symbols are output as a dynamic symbol
3214 && eh
->dyn_relocs
!= NULL
3216 && h
->root
.type
== bfd_link_hash_undefweak
3217 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
3219 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3223 else if (ELIMINATE_COPY_RELOCS
)
3225 /* For the non-shared case, discard space for relocs against
3226 symbols which turn out to need copy relocs or are not
3229 if ((h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
3230 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
3231 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
3233 /* Make sure this symbol is output as a dynamic symbol.
3234 Undefined weak syms won't yet be marked as dynamic. */
3235 if (h
->dynindx
== -1
3236 && (h
->elf_link_hash_flags
& ELF_LINK_FORCED_LOCAL
) == 0)
3238 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
3242 /* If that succeeded, we know we'll be keeping all the
3244 if (h
->dynindx
!= -1)
3248 eh
->dyn_relocs
= NULL
;
3253 /* Finally, allocate space. */
3254 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3256 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
3257 sreloc
->size
+= p
->count
* sizeof (Elf32_External_Rela
);
3263 /* Find any dynamic relocs that apply to read-only sections. */
3266 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *info
)
3268 struct ppc_elf_dyn_relocs
*p
;
3270 if (h
->root
.type
== bfd_link_hash_indirect
)
3273 if (h
->root
.type
== bfd_link_hash_warning
)
3274 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
3276 for (p
= ppc_elf_hash_entry (h
)->dyn_relocs
; p
!= NULL
; p
= p
->next
)
3278 asection
*s
= p
->sec
->output_section
;
3281 && ((s
->flags
& (SEC_READONLY
| SEC_ALLOC
))
3282 == (SEC_READONLY
| SEC_ALLOC
)))
3284 ((struct bfd_link_info
*) info
)->flags
|= DF_TEXTREL
;
3286 /* Not an error, just cut short the traversal. */
3293 /* Set the sizes of the dynamic sections. */
3296 ppc_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
3297 struct bfd_link_info
*info
)
3299 struct ppc_elf_link_hash_table
*htab
;
3305 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
3308 htab
= ppc_elf_hash_table (info
);
3309 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
3311 if (elf_hash_table (info
)->dynamic_sections_created
)
3313 /* Set the contents of the .interp section to the interpreter. */
3314 if (info
->executable
)
3316 s
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".interp");
3317 BFD_ASSERT (s
!= NULL
);
3318 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
3319 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
3323 if (htab
->tlsld_got
.refcount
> 0)
3325 htab
->tlsld_got
.offset
= htab
->got
->size
;
3326 htab
->got
->size
+= 8;
3328 htab
->relgot
->size
+= sizeof (Elf32_External_Rela
);
3331 htab
->tlsld_got
.offset
= (bfd_vma
) -1;
3333 /* Set up .got offsets for local syms, and space for local dynamic
3335 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
3337 bfd_signed_vma
*local_got
;
3338 bfd_signed_vma
*end_local_got
;
3340 bfd_size_type locsymcount
;
3341 Elf_Internal_Shdr
*symtab_hdr
;
3344 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
)
3347 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
3349 struct ppc_elf_dyn_relocs
*p
;
3351 for (p
= ((struct ppc_elf_dyn_relocs
*)
3352 elf_section_data (s
)->local_dynrel
);
3356 if (!bfd_is_abs_section (p
->sec
)
3357 && bfd_is_abs_section (p
->sec
->output_section
))
3359 /* Input section has been discarded, either because
3360 it is a copy of a linkonce section or due to
3361 linker script /DISCARD/, so we'll be discarding
3364 else if (p
->count
!= 0)
3366 elf_section_data (p
->sec
)->sreloc
->size
3367 += p
->count
* sizeof (Elf32_External_Rela
);
3368 if ((p
->sec
->output_section
->flags
3369 & (SEC_READONLY
| SEC_ALLOC
))
3370 == (SEC_READONLY
| SEC_ALLOC
))
3371 info
->flags
|= DF_TEXTREL
;
3376 local_got
= elf_local_got_refcounts (ibfd
);
3380 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
3381 locsymcount
= symtab_hdr
->sh_info
;
3382 end_local_got
= local_got
+ locsymcount
;
3383 lgot_masks
= (char *) end_local_got
;
3385 srel
= htab
->relgot
;
3386 for (; local_got
< end_local_got
; ++local_got
, ++lgot_masks
)
3389 if (*lgot_masks
== (TLS_TLS
| TLS_LD
))
3391 /* If just an LD reloc, we'll just use
3392 htab->tlsld_got.offset. */
3393 if (htab
->tlsld_got
.offset
== (bfd_vma
) -1)
3395 htab
->tlsld_got
.offset
= s
->size
;
3398 srel
->size
+= sizeof (Elf32_External_Rela
);
3400 *local_got
= (bfd_vma
) -1;
3404 *local_got
= s
->size
;
3405 if ((*lgot_masks
& TLS_TLS
) != 0)
3407 if ((*lgot_masks
& TLS_GD
) != 0)
3409 if ((*lgot_masks
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
3411 if ((*lgot_masks
& TLS_DTPREL
) != 0)
3417 srel
->size
+= ((s
->size
- *local_got
) / 4
3418 * sizeof (Elf32_External_Rela
));
3422 *local_got
= (bfd_vma
) -1;
3425 /* Allocate space for global sym dynamic relocs. */
3426 elf_link_hash_traverse (elf_hash_table (info
), allocate_dynrelocs
, info
);
3428 /* We've now determined the sizes of the various dynamic sections.
3429 Allocate memory for them. */
3431 for (s
= htab
->elf
.dynobj
->sections
; s
!= NULL
; s
= s
->next
)
3433 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
3438 || (htab
->sdata
!= NULL
&& s
== htab
->sdata
->section
)
3439 || (htab
->sdata2
!= NULL
&& s
== htab
->sdata2
->section
))
3441 /* Strip this section if we don't need it; see the
3444 else if (strncmp (bfd_get_section_name (dynobj
, s
), ".rela", 5) == 0)
3448 /* If we don't need this section, strip it from the
3449 output file. This is mostly to handle .rela.bss and
3450 .rela.plt. We must create both sections in
3451 create_dynamic_sections, because they must be created
3452 before the linker maps input sections to output
3453 sections. The linker does that before
3454 adjust_dynamic_symbol is called, and it is that
3455 function which decides whether anything needs to go
3456 into these sections. */
3460 /* Remember whether there are any relocation sections. */
3463 /* We use the reloc_count field as a counter if we need
3464 to copy relocs into the output file. */
3470 /* It's not one of our sections, so don't allocate space. */
3476 _bfd_strip_section_from_output (info
, s
);
3480 /* Allocate memory for the section contents. */
3481 s
->contents
= bfd_zalloc (htab
->elf
.dynobj
, s
->size
);
3482 if (s
->contents
== NULL
)
3486 if (htab
->elf
.dynamic_sections_created
)
3488 /* Add some entries to the .dynamic section. We fill in the
3489 values later, in ppc_elf_finish_dynamic_sections, but we
3490 must add the entries now so that we get the correct size for
3491 the .dynamic section. The DT_DEBUG entry is filled in by the
3492 dynamic linker and used by the debugger. */
3493 #define add_dynamic_entry(TAG, VAL) \
3494 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3496 if (info
->executable
)
3498 if (!add_dynamic_entry (DT_DEBUG
, 0))
3502 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
3504 if (!add_dynamic_entry (DT_PLTGOT
, 0)
3505 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
3506 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
3507 || !add_dynamic_entry (DT_JMPREL
, 0))
3513 if (!add_dynamic_entry (DT_RELA
, 0)
3514 || !add_dynamic_entry (DT_RELASZ
, 0)
3515 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf32_External_Rela
)))
3519 /* If any dynamic relocs apply to a read-only section, then we
3520 need a DT_TEXTREL entry. */
3521 if ((info
->flags
& DF_TEXTREL
) == 0)
3522 elf_link_hash_traverse (elf_hash_table (info
), readonly_dynrelocs
,
3525 if ((info
->flags
& DF_TEXTREL
) != 0)
3527 if (!add_dynamic_entry (DT_TEXTREL
, 0))
3531 #undef add_dynamic_entry
3537 update_local_sym_info (bfd
*abfd
,
3538 Elf_Internal_Shdr
*symtab_hdr
,
3539 unsigned long r_symndx
,
3542 bfd_signed_vma
*local_got_refcounts
= elf_local_got_refcounts (abfd
);
3543 char *local_got_tls_masks
;
3545 if (local_got_refcounts
== NULL
)
3547 bfd_size_type size
= symtab_hdr
->sh_info
;
3549 size
*= sizeof (*local_got_refcounts
) + sizeof (*local_got_tls_masks
);
3550 local_got_refcounts
= bfd_zalloc (abfd
, size
);
3551 if (local_got_refcounts
== NULL
)
3553 elf_local_got_refcounts (abfd
) = local_got_refcounts
;
3556 local_got_refcounts
[r_symndx
] += 1;
3557 local_got_tls_masks
= (char *) (local_got_refcounts
+ symtab_hdr
->sh_info
);
3558 local_got_tls_masks
[r_symndx
] |= tls_type
;
3563 bad_shared_reloc (bfd
*abfd
, enum elf_ppc_reloc_type r_type
)
3565 (*_bfd_error_handler
)
3566 (_("%s: relocation %s cannot be used when making a shared object"),
3567 bfd_archive_filename (abfd
),
3568 ppc_elf_howto_table
[r_type
]->name
);
3569 bfd_set_error (bfd_error_bad_value
);
3572 /* Look through the relocs for a section during the first phase, and
3573 allocate space in the global offset table or procedure linkage
3577 ppc_elf_check_relocs (bfd
*abfd
,
3578 struct bfd_link_info
*info
,
3580 const Elf_Internal_Rela
*relocs
)
3582 struct ppc_elf_link_hash_table
*htab
;
3583 Elf_Internal_Shdr
*symtab_hdr
;
3584 struct elf_link_hash_entry
**sym_hashes
;
3585 const Elf_Internal_Rela
*rel
;
3586 const Elf_Internal_Rela
*rel_end
;
3589 if (info
->relocatable
)
3593 fprintf (stderr
, "ppc_elf_check_relocs called for section %s in %s\n",
3594 bfd_get_section_name (abfd
, sec
),
3595 bfd_archive_filename (abfd
));
3598 /* Initialize howto table if not already done. */
3599 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
3600 ppc_elf_howto_init ();
3602 /* Create the linker generated sections all the time so that the
3603 special symbols are created. */
3604 htab
= ppc_elf_hash_table (info
);
3605 if (htab
->sdata
== NULL
)
3607 htab
->sdata
= ppc_elf_create_linker_section (abfd
, info
,
3608 LINKER_SECTION_SDATA
);
3609 if (htab
->sdata
== NULL
)
3613 if (htab
->sdata2
== NULL
)
3615 htab
->sdata2
= ppc_elf_create_linker_section (abfd
, info
,
3616 LINKER_SECTION_SDATA2
);
3617 if (htab
->sdata2
== NULL
)
3621 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
3622 sym_hashes
= elf_sym_hashes (abfd
);
3625 rel_end
= relocs
+ sec
->reloc_count
;
3626 for (rel
= relocs
; rel
< rel_end
; rel
++)
3628 unsigned long r_symndx
;
3629 enum elf_ppc_reloc_type r_type
;
3630 struct elf_link_hash_entry
*h
;
3633 r_symndx
= ELF32_R_SYM (rel
->r_info
);
3634 if (r_symndx
< symtab_hdr
->sh_info
)
3637 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
3639 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
3640 This shows up in particular in an R_PPC_ADDR32 in the eabi
3642 if (h
&& strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3644 if (htab
->got
== NULL
)
3646 if (htab
->elf
.dynobj
== NULL
)
3647 htab
->elf
.dynobj
= abfd
;
3648 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3653 r_type
= ELF32_R_TYPE (rel
->r_info
);
3656 case R_PPC_GOT_TLSLD16
:
3657 case R_PPC_GOT_TLSLD16_LO
:
3658 case R_PPC_GOT_TLSLD16_HI
:
3659 case R_PPC_GOT_TLSLD16_HA
:
3660 htab
->tlsld_got
.refcount
+= 1;
3661 tls_type
= TLS_TLS
| TLS_LD
;
3664 case R_PPC_GOT_TLSGD16
:
3665 case R_PPC_GOT_TLSGD16_LO
:
3666 case R_PPC_GOT_TLSGD16_HI
:
3667 case R_PPC_GOT_TLSGD16_HA
:
3668 tls_type
= TLS_TLS
| TLS_GD
;
3671 case R_PPC_GOT_TPREL16
:
3672 case R_PPC_GOT_TPREL16_LO
:
3673 case R_PPC_GOT_TPREL16_HI
:
3674 case R_PPC_GOT_TPREL16_HA
:
3676 info
->flags
|= DF_STATIC_TLS
;
3677 tls_type
= TLS_TLS
| TLS_TPREL
;
3680 case R_PPC_GOT_DTPREL16
:
3681 case R_PPC_GOT_DTPREL16_LO
:
3682 case R_PPC_GOT_DTPREL16_HI
:
3683 case R_PPC_GOT_DTPREL16_HA
:
3684 tls_type
= TLS_TLS
| TLS_DTPREL
;
3686 sec
->has_tls_reloc
= 1;
3689 /* GOT16 relocations */
3691 case R_PPC_GOT16_LO
:
3692 case R_PPC_GOT16_HI
:
3693 case R_PPC_GOT16_HA
:
3694 /* This symbol requires a global offset table entry. */
3695 if (htab
->got
== NULL
)
3697 if (htab
->elf
.dynobj
== NULL
)
3698 htab
->elf
.dynobj
= abfd
;
3699 if (!ppc_elf_create_got (htab
->elf
.dynobj
, info
))
3704 h
->got
.refcount
+= 1;
3705 ppc_elf_hash_entry (h
)->tls_mask
|= tls_type
;
3708 /* This is a global offset table entry for a local symbol. */
3709 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
, tls_type
))
3713 /* Indirect .sdata relocation. */
3714 case R_PPC_EMB_SDAI16
:
3717 bad_shared_reloc (abfd
, r_type
);
3720 if (!elf_create_pointer_linker_section (abfd
, info
,
3721 htab
->sdata
, h
, rel
))
3725 /* Indirect .sdata2 relocation. */
3726 case R_PPC_EMB_SDA2I16
:
3729 bad_shared_reloc (abfd
, r_type
);
3732 if (!elf_create_pointer_linker_section (abfd
, info
,
3733 htab
->sdata2
, h
, rel
))
3737 case R_PPC_SDAREL16
:
3738 case R_PPC_EMB_SDA2REL
:
3739 case R_PPC_EMB_SDA21
:
3740 case R_PPC_EMB_RELSDA
:
3741 case R_PPC_EMB_NADDR32
:
3742 case R_PPC_EMB_NADDR16
:
3743 case R_PPC_EMB_NADDR16_LO
:
3744 case R_PPC_EMB_NADDR16_HI
:
3745 case R_PPC_EMB_NADDR16_HA
:
3748 bad_shared_reloc (abfd
, r_type
);
3754 case R_PPC_PLTREL24
:
3755 case R_PPC_PLTREL32
:
3756 case R_PPC_PLT16_LO
:
3757 case R_PPC_PLT16_HI
:
3758 case R_PPC_PLT16_HA
:
3760 fprintf (stderr
, "Reloc requires a PLT entry\n");
3762 /* This symbol requires a procedure linkage table entry. We
3763 actually build the entry in finish_dynamic_symbol,
3764 because this might be a case of linking PIC code without
3765 linking in any dynamic objects, in which case we don't
3766 need to generate a procedure linkage table after all. */
3770 /* It does not make sense to have a procedure linkage
3771 table entry for a local symbol. */
3772 (*_bfd_error_handler
) (_("%s(%s+0x%lx): %s reloc against "
3774 bfd_archive_filename (abfd
),
3776 (long) rel
->r_offset
,
3777 ppc_elf_howto_table
[r_type
]->name
);
3778 bfd_set_error (bfd_error_bad_value
);
3782 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
3786 /* The following relocations don't need to propagate the
3787 relocation if linking a shared object since they are
3788 section relative. */
3790 case R_PPC_SECTOFF_LO
:
3791 case R_PPC_SECTOFF_HI
:
3792 case R_PPC_SECTOFF_HA
:
3793 case R_PPC_DTPREL16
:
3794 case R_PPC_DTPREL16_LO
:
3795 case R_PPC_DTPREL16_HI
:
3796 case R_PPC_DTPREL16_HA
:
3800 /* This are just markers. */
3802 case R_PPC_EMB_MRKREF
:
3807 /* These should only appear in dynamic objects. */
3809 case R_PPC_GLOB_DAT
:
3810 case R_PPC_JMP_SLOT
:
3811 case R_PPC_RELATIVE
:
3814 /* These aren't handled yet. We'll report an error later. */
3816 case R_PPC_EMB_RELSEC16
:
3817 case R_PPC_EMB_RELST_LO
:
3818 case R_PPC_EMB_RELST_HI
:
3819 case R_PPC_EMB_RELST_HA
:
3820 case R_PPC_EMB_BIT_FLD
:
3823 /* This refers only to functions defined in the shared library. */
3824 case R_PPC_LOCAL24PC
:
3827 /* This relocation describes the C++ object vtable hierarchy.
3828 Reconstruct it for later use during GC. */
3829 case R_PPC_GNU_VTINHERIT
:
3830 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
3834 /* This relocation describes which C++ vtable entries are actually
3835 used. Record for later use during GC. */
3836 case R_PPC_GNU_VTENTRY
:
3837 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
3841 /* We shouldn't really be seeing these. */
3844 info
->flags
|= DF_STATIC_TLS
;
3848 case R_PPC_DTPMOD32
:
3849 case R_PPC_DTPREL32
:
3853 case R_PPC_TPREL16_LO
:
3854 case R_PPC_TPREL16_HI
:
3855 case R_PPC_TPREL16_HA
:
3857 info
->flags
|= DF_STATIC_TLS
;
3860 /* When creating a shared object, we must copy these
3861 relocs into the output file. We create a reloc
3862 section in dynobj and make room for the reloc. */
3865 case R_PPC_REL14_BRTAKEN
:
3866 case R_PPC_REL14_BRNTAKEN
:
3869 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
3876 case R_PPC_ADDR16_LO
:
3877 case R_PPC_ADDR16_HI
:
3878 case R_PPC_ADDR16_HA
:
3880 case R_PPC_ADDR14_BRTAKEN
:
3881 case R_PPC_ADDR14_BRNTAKEN
:
3884 if (h
!= NULL
&& !info
->shared
)
3886 /* We may need a plt entry if the symbol turns out to be
3887 a function defined in a dynamic object. */
3890 /* We may need a copy reloc too. */
3891 h
->elf_link_hash_flags
|= ELF_LINK_NON_GOT_REF
;
3895 /* If we are creating a shared library, and this is a reloc
3896 against a global symbol, or a non PC relative reloc
3897 against a local symbol, then we need to copy the reloc
3898 into the shared library. However, if we are linking with
3899 -Bsymbolic, we do not need to copy a reloc against a
3900 global symbol which is defined in an object we are
3901 including in the link (i.e., DEF_REGULAR is set). At
3902 this point we have not seen all the input files, so it is
3903 possible that DEF_REGULAR is not set now but will be set
3904 later (it is never cleared). In case of a weak definition,
3905 DEF_REGULAR may be cleared later by a strong definition in
3906 a shared library. We account for that possibility below by
3907 storing information in the dyn_relocs field of the hash
3908 table entry. A similar situation occurs when creating
3909 shared libraries and symbol visibility changes render the
3912 If on the other hand, we are creating an executable, we
3913 may need to keep relocations for symbols satisfied by a
3914 dynamic library if we manage to avoid copy relocs for the
3917 && (MUST_BE_DYN_RELOC (r_type
)
3919 && (! info
->symbolic
3920 || h
->root
.type
== bfd_link_hash_defweak
3921 || (h
->elf_link_hash_flags
3922 & ELF_LINK_HASH_DEF_REGULAR
) == 0))))
3923 || (ELIMINATE_COPY_RELOCS
3925 && (sec
->flags
& SEC_ALLOC
) != 0
3927 && (h
->root
.type
== bfd_link_hash_defweak
3928 || (h
->elf_link_hash_flags
3929 & ELF_LINK_HASH_DEF_REGULAR
) == 0)))
3931 struct ppc_elf_dyn_relocs
*p
;
3932 struct ppc_elf_dyn_relocs
**head
;
3936 "ppc_elf_check_relocs needs to "
3937 "create relocation for %s\n",
3938 (h
&& h
->root
.root
.string
3939 ? h
->root
.root
.string
: "<unknown>"));
3945 name
= (bfd_elf_string_from_elf_section
3947 elf_elfheader (abfd
)->e_shstrndx
,
3948 elf_section_data (sec
)->rel_hdr
.sh_name
));
3952 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
3953 && strcmp (bfd_get_section_name (abfd
, sec
),
3956 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
3961 sreloc
= bfd_make_section (htab
->elf
.dynobj
, name
);
3962 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
3963 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3964 if ((sec
->flags
& SEC_ALLOC
) != 0)
3965 flags
|= SEC_ALLOC
| SEC_LOAD
;
3967 || ! bfd_set_section_flags (htab
->elf
.dynobj
,
3969 || ! bfd_set_section_alignment (htab
->elf
.dynobj
,
3973 elf_section_data (sec
)->sreloc
= sreloc
;
3976 /* If this is a global symbol, we count the number of
3977 relocations we need for this symbol. */
3980 head
= &ppc_elf_hash_entry (h
)->dyn_relocs
;
3984 /* Track dynamic relocs needed for local syms too.
3985 We really need local syms available to do this
3989 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
3994 head
= ((struct ppc_elf_dyn_relocs
**)
3995 &elf_section_data (s
)->local_dynrel
);
3999 if (p
== NULL
|| p
->sec
!= sec
)
4001 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4012 if (!MUST_BE_DYN_RELOC (r_type
))
4023 /* Return the section that should be marked against GC for a given
4027 ppc_elf_gc_mark_hook (asection
*sec
,
4028 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4029 Elf_Internal_Rela
*rel
,
4030 struct elf_link_hash_entry
*h
,
4031 Elf_Internal_Sym
*sym
)
4035 switch (ELF32_R_TYPE (rel
->r_info
))
4037 case R_PPC_GNU_VTINHERIT
:
4038 case R_PPC_GNU_VTENTRY
:
4042 switch (h
->root
.type
)
4044 case bfd_link_hash_defined
:
4045 case bfd_link_hash_defweak
:
4046 return h
->root
.u
.def
.section
;
4048 case bfd_link_hash_common
:
4049 return h
->root
.u
.c
.p
->section
;
4057 return bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
4062 /* Update the got, plt and dynamic reloc reference counts for the
4063 section being removed. */
4066 ppc_elf_gc_sweep_hook (bfd
*abfd
,
4067 struct bfd_link_info
*info
,
4069 const Elf_Internal_Rela
*relocs
)
4071 struct ppc_elf_link_hash_table
*htab
;
4072 Elf_Internal_Shdr
*symtab_hdr
;
4073 struct elf_link_hash_entry
**sym_hashes
;
4074 bfd_signed_vma
*local_got_refcounts
;
4075 const Elf_Internal_Rela
*rel
, *relend
;
4077 elf_section_data (sec
)->local_dynrel
= NULL
;
4079 htab
= ppc_elf_hash_table (info
);
4080 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4081 sym_hashes
= elf_sym_hashes (abfd
);
4082 local_got_refcounts
= elf_local_got_refcounts (abfd
);
4084 relend
= relocs
+ sec
->reloc_count
;
4085 for (rel
= relocs
; rel
< relend
; rel
++)
4087 unsigned long r_symndx
;
4088 enum elf_ppc_reloc_type r_type
;
4089 struct elf_link_hash_entry
*h
= NULL
;
4091 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4092 if (r_symndx
>= symtab_hdr
->sh_info
)
4094 struct ppc_elf_dyn_relocs
**pp
, *p
;
4095 struct ppc_elf_link_hash_entry
*eh
;
4097 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4098 eh
= (struct ppc_elf_link_hash_entry
*) h
;
4100 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
4103 /* Everything must go for SEC. */
4109 r_type
= ELF32_R_TYPE (rel
->r_info
);
4112 case R_PPC_GOT_TLSLD16
:
4113 case R_PPC_GOT_TLSLD16_LO
:
4114 case R_PPC_GOT_TLSLD16_HI
:
4115 case R_PPC_GOT_TLSLD16_HA
:
4116 htab
->tlsld_got
.refcount
-= 1;
4119 case R_PPC_GOT_TLSGD16
:
4120 case R_PPC_GOT_TLSGD16_LO
:
4121 case R_PPC_GOT_TLSGD16_HI
:
4122 case R_PPC_GOT_TLSGD16_HA
:
4123 case R_PPC_GOT_TPREL16
:
4124 case R_PPC_GOT_TPREL16_LO
:
4125 case R_PPC_GOT_TPREL16_HI
:
4126 case R_PPC_GOT_TPREL16_HA
:
4127 case R_PPC_GOT_DTPREL16
:
4128 case R_PPC_GOT_DTPREL16_LO
:
4129 case R_PPC_GOT_DTPREL16_HI
:
4130 case R_PPC_GOT_DTPREL16_HA
:
4132 case R_PPC_GOT16_LO
:
4133 case R_PPC_GOT16_HI
:
4134 case R_PPC_GOT16_HA
:
4137 if (h
->got
.refcount
> 0)
4140 else if (local_got_refcounts
!= NULL
)
4142 if (local_got_refcounts
[r_symndx
] > 0)
4143 local_got_refcounts
[r_symndx
]--;
4149 case R_PPC_REL14_BRTAKEN
:
4150 case R_PPC_REL14_BRNTAKEN
:
4153 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
4160 case R_PPC_ADDR16_LO
:
4161 case R_PPC_ADDR16_HI
:
4162 case R_PPC_ADDR16_HA
:
4164 case R_PPC_ADDR14_BRTAKEN
:
4165 case R_PPC_ADDR14_BRNTAKEN
:
4169 case R_PPC_PLTREL24
:
4170 case R_PPC_PLT16_LO
:
4171 case R_PPC_PLT16_HI
:
4172 case R_PPC_PLT16_HA
:
4175 if (h
->plt
.refcount
> 0)
4187 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
4190 ppc_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
4192 struct ppc_elf_link_hash_table
*htab
;
4194 htab
= ppc_elf_hash_table (info
);
4195 htab
->tls_get_addr
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4196 FALSE
, FALSE
, TRUE
);
4198 return _bfd_elf_tls_setup (obfd
, info
);
4201 /* Run through all the TLS relocs looking for optimization
4205 ppc_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
,
4206 struct bfd_link_info
*info
)
4210 struct ppc_elf_link_hash_table
*htab
;
4212 if (info
->relocatable
|| info
->shared
)
4215 htab
= ppc_elf_hash_table (info
);
4216 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
4218 Elf_Internal_Sym
*locsyms
= NULL
;
4219 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
4221 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4222 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
4224 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
4225 int expecting_tls_get_addr
;
4227 /* Read the relocations. */
4228 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
4230 if (relstart
== NULL
)
4233 expecting_tls_get_addr
= 0;
4234 relend
= relstart
+ sec
->reloc_count
;
4235 for (rel
= relstart
; rel
< relend
; rel
++)
4237 enum elf_ppc_reloc_type r_type
;
4238 unsigned long r_symndx
;
4239 struct elf_link_hash_entry
*h
= NULL
;
4241 char tls_set
, tls_clear
;
4242 bfd_boolean is_local
;
4244 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4245 if (r_symndx
>= symtab_hdr
->sh_info
)
4247 struct elf_link_hash_entry
**sym_hashes
;
4249 sym_hashes
= elf_sym_hashes (ibfd
);
4250 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4251 while (h
->root
.type
== bfd_link_hash_indirect
4252 || h
->root
.type
== bfd_link_hash_warning
)
4253 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4258 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
))
4261 r_type
= ELF32_R_TYPE (rel
->r_info
);
4264 case R_PPC_GOT_TLSLD16
:
4265 case R_PPC_GOT_TLSLD16_LO
:
4266 case R_PPC_GOT_TLSLD16_HI
:
4267 case R_PPC_GOT_TLSLD16_HA
:
4268 /* These relocs should never be against a symbol
4269 defined in a shared lib. Leave them alone if
4270 that turns out to be the case. */
4271 expecting_tls_get_addr
= 0;
4272 htab
->tlsld_got
.refcount
-= 1;
4279 expecting_tls_get_addr
= 1;
4282 case R_PPC_GOT_TLSGD16
:
4283 case R_PPC_GOT_TLSGD16_LO
:
4284 case R_PPC_GOT_TLSGD16_HI
:
4285 case R_PPC_GOT_TLSGD16_HA
:
4291 tls_set
= TLS_TLS
| TLS_TPRELGD
;
4293 expecting_tls_get_addr
= 1;
4296 case R_PPC_GOT_TPREL16
:
4297 case R_PPC_GOT_TPREL16_LO
:
4298 case R_PPC_GOT_TPREL16_HI
:
4299 case R_PPC_GOT_TPREL16_HA
:
4300 expecting_tls_get_addr
= 0;
4305 tls_clear
= TLS_TPREL
;
4312 case R_PPC_REL14_BRTAKEN
:
4313 case R_PPC_REL14_BRNTAKEN
:
4315 if (expecting_tls_get_addr
4317 && h
== htab
->tls_get_addr
)
4319 if (h
->plt
.refcount
> 0)
4320 h
->plt
.refcount
-= 1;
4322 expecting_tls_get_addr
= 0;
4326 expecting_tls_get_addr
= 0;
4334 /* We managed to get rid of a got entry. */
4335 if (h
->got
.refcount
> 0)
4336 h
->got
.refcount
-= 1;
4338 tls_mask
= &ppc_elf_hash_entry (h
)->tls_mask
;
4342 Elf_Internal_Sym
*sym
;
4343 bfd_signed_vma
*lgot_refs
;
4346 if (locsyms
== NULL
)
4348 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
4349 if (locsyms
== NULL
)
4350 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
4351 symtab_hdr
->sh_info
,
4352 0, NULL
, NULL
, NULL
);
4353 if (locsyms
== NULL
)
4355 if (elf_section_data (sec
)->relocs
!= relstart
)
4360 sym
= locsyms
+ r_symndx
;
4361 lgot_refs
= elf_local_got_refcounts (ibfd
);
4362 if (lgot_refs
== NULL
)
4366 /* We managed to get rid of a got entry. */
4367 if (lgot_refs
[r_symndx
] > 0)
4368 lgot_refs
[r_symndx
] -= 1;
4370 lgot_masks
= (char *) (lgot_refs
+ symtab_hdr
->sh_info
);
4371 tls_mask
= &lgot_masks
[r_symndx
];
4374 *tls_mask
|= tls_set
;
4375 *tls_mask
&= ~tls_clear
;
4378 if (elf_section_data (sec
)->relocs
!= relstart
)
4383 && (symtab_hdr
->contents
!= (unsigned char *) locsyms
))
4385 if (!info
->keep_memory
)
4388 symtab_hdr
->contents
= (unsigned char *) locsyms
;
4394 /* Hook called by the linker routine which adds symbols from an object
4395 file. We use it to put .comm items in .sbss, and not .bss. */
4398 ppc_elf_add_symbol_hook (bfd
*abfd
,
4399 struct bfd_link_info
*info
,
4400 Elf_Internal_Sym
*sym
,
4401 const char **namep ATTRIBUTE_UNUSED
,
4402 flagword
*flagsp ATTRIBUTE_UNUSED
,
4406 if (sym
->st_shndx
== SHN_COMMON
4407 && !info
->relocatable
4408 && sym
->st_size
<= elf_gp_size (abfd
)
4409 && (info
->hash
->creator
== abfd
->xvec
4410 || info
->hash
->creator
== abfd
->xvec
->alternative_target
))
4412 /* Common symbols less than or equal to -G nn bytes are automatically
4414 struct ppc_elf_link_hash_table
*htab
;
4416 htab
= ppc_elf_hash_table (info
);
4417 if (htab
->sbss
== NULL
)
4419 flagword flags
= SEC_IS_COMMON
;
4421 htab
->sbss
= bfd_make_section_anyway (abfd
, ".sbss");
4422 if (htab
->sbss
== NULL
4423 || ! bfd_set_section_flags (abfd
, htab
->sbss
, flags
))
4428 *valp
= sym
->st_size
;
4434 /* Finish up dynamic symbol handling. We set the contents of various
4435 dynamic sections here. */
4438 ppc_elf_finish_dynamic_symbol (bfd
*output_bfd
,
4439 struct bfd_link_info
*info
,
4440 struct elf_link_hash_entry
*h
,
4441 Elf_Internal_Sym
*sym
)
4443 struct ppc_elf_link_hash_table
*htab
;
4446 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s",
4447 h
->root
.root
.string
);
4450 htab
= ppc_elf_hash_table (info
);
4451 BFD_ASSERT (htab
->elf
.dynobj
!= NULL
);
4453 if (h
->plt
.offset
!= (bfd_vma
) -1)
4455 Elf_Internal_Rela rela
;
4457 bfd_vma reloc_index
;
4460 fprintf (stderr
, ", plt_offset = %d", h
->plt
.offset
);
4463 /* This symbol has an entry in the procedure linkage table. Set
4466 BFD_ASSERT (h
->dynindx
!= -1);
4467 BFD_ASSERT (htab
->plt
!= NULL
&& htab
->relplt
!= NULL
);
4469 /* We don't need to fill in the .plt. The ppc dynamic linker
4472 /* Fill in the entry in the .rela.plt section. */
4473 rela
.r_offset
= (htab
->plt
->output_section
->vma
4474 + htab
->plt
->output_offset
4476 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
4479 reloc_index
= (h
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_SLOT_SIZE
;
4480 if (reloc_index
> PLT_NUM_SINGLE_ENTRIES
)
4481 reloc_index
-= (reloc_index
- PLT_NUM_SINGLE_ENTRIES
) / 2;
4482 loc
= (htab
->relplt
->contents
4483 + reloc_index
* sizeof (Elf32_External_Rela
));
4484 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
4486 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
4488 /* Mark the symbol as undefined, rather than as defined in
4489 the .plt section. Leave the value alone. */
4490 sym
->st_shndx
= SHN_UNDEF
;
4491 /* If the symbol is weak, we do need to clear the value.
4492 Otherwise, the PLT entry would provide a definition for
4493 the symbol even if the symbol wasn't defined anywhere,
4494 and so the symbol would never be NULL. */
4495 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_REGULAR_NONWEAK
)
4501 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
4504 Elf_Internal_Rela rela
;
4507 /* This symbols needs a copy reloc. Set it up. */
4510 fprintf (stderr
, ", copy");
4513 BFD_ASSERT (h
->dynindx
!= -1);
4515 if (h
->size
<= elf_gp_size (htab
->elf
.dynobj
))
4519 BFD_ASSERT (s
!= NULL
);
4521 rela
.r_offset
= (h
->root
.u
.def
.value
4522 + h
->root
.u
.def
.section
->output_section
->vma
4523 + h
->root
.u
.def
.section
->output_offset
);
4524 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
4526 loc
= s
->contents
+ s
->reloc_count
++ * sizeof (Elf32_External_Rela
);
4527 bfd_elf32_swap_reloca_out (output_bfd
, &rela
, loc
);
4531 fprintf (stderr
, "\n");
4534 /* Mark some specially defined symbols as absolute. */
4535 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
4536 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
4537 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
4538 sym
->st_shndx
= SHN_ABS
;
4543 /* Finish up the dynamic sections. */
4546 ppc_elf_finish_dynamic_sections (bfd
*output_bfd
,
4547 struct bfd_link_info
*info
)
4550 struct ppc_elf_link_hash_table
*htab
;
4553 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
4556 htab
= ppc_elf_hash_table (info
);
4557 sdyn
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".dynamic");
4559 if (htab
->elf
.dynamic_sections_created
)
4561 Elf32_External_Dyn
*dyncon
, *dynconend
;
4563 BFD_ASSERT (htab
->plt
!= NULL
&& sdyn
!= NULL
);
4565 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
4566 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
4567 for (; dyncon
< dynconend
; dyncon
++)
4569 Elf_Internal_Dyn dyn
;
4572 bfd_elf32_swap_dyn_in (htab
->elf
.dynobj
, dyncon
, &dyn
);
4578 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
4582 dyn
.d_un
.d_val
= htab
->relplt
->size
;
4587 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
4594 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
4598 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
4599 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
4602 unsigned char *contents
= htab
->got
->contents
;
4603 bfd_put_32 (output_bfd
, 0x4e800021 /* blrl */, contents
);
4606 bfd_put_32 (output_bfd
, 0, contents
+ 4);
4608 bfd_put_32 (output_bfd
,
4609 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
4612 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 4;
4618 /* The RELOCATE_SECTION function is called by the ELF backend linker
4619 to handle the relocations for a section.
4621 The relocs are always passed as Rela structures; if the section
4622 actually uses Rel structures, the r_addend field will always be
4625 This function is responsible for adjust the section contents as
4626 necessary, and (if using Rela relocs and generating a
4627 relocatable output file) adjusting the reloc addend as
4630 This function does not have to worry about setting the reloc
4631 address or the reloc symbol index.
4633 LOCAL_SYMS is a pointer to the swapped in local symbols.
4635 LOCAL_SECTIONS is an array giving the section in the input file
4636 corresponding to the st_shndx field of each local symbol.
4638 The global hash table entry for the global symbols can be found
4639 via elf_sym_hashes (input_bfd).
4641 When generating relocatable output, this function must handle
4642 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4643 going to be the section symbol corresponding to the output
4644 section, which means that the addend must be adjusted
4648 ppc_elf_relocate_section (bfd
*output_bfd
,
4649 struct bfd_link_info
*info
,
4651 asection
*input_section
,
4653 Elf_Internal_Rela
*relocs
,
4654 Elf_Internal_Sym
*local_syms
,
4655 asection
**local_sections
)
4657 Elf_Internal_Shdr
*symtab_hdr
;
4658 struct elf_link_hash_entry
**sym_hashes
;
4659 struct ppc_elf_link_hash_table
*htab
;
4660 Elf_Internal_Rela
*rel
;
4661 Elf_Internal_Rela
*relend
;
4662 Elf_Internal_Rela outrel
;
4664 asection
*sreloc
= NULL
;
4665 bfd_vma
*local_got_offsets
;
4666 bfd_boolean ret
= TRUE
;
4669 fprintf (stderr
, "ppc_elf_relocate_section called for %s section %s, "
4670 "%ld relocations%s\n",
4671 bfd_archive_filename (input_bfd
),
4672 bfd_section_name(input_bfd
, input_section
),
4673 (long) input_section
->reloc_count
,
4674 (info
->relocatable
) ? " (relocatable)" : "");
4677 if (info
->relocatable
)
4680 /* Initialize howto table if not already done. */
4681 if (!ppc_elf_howto_table
[R_PPC_ADDR32
])
4682 ppc_elf_howto_init ();
4684 htab
= ppc_elf_hash_table (info
);
4685 local_got_offsets
= elf_local_got_offsets (input_bfd
);
4686 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
4687 sym_hashes
= elf_sym_hashes (input_bfd
);
4689 relend
= relocs
+ input_section
->reloc_count
;
4690 for (; rel
< relend
; rel
++)
4692 enum elf_ppc_reloc_type r_type
;
4694 bfd_reloc_status_type r
;
4695 Elf_Internal_Sym
*sym
;
4697 struct elf_link_hash_entry
*h
;
4698 const char *sym_name
;
4699 reloc_howto_type
*howto
;
4700 unsigned long r_symndx
;
4702 bfd_vma branch_bit
, insn
, from
;
4703 bfd_boolean unresolved_reloc
;
4705 unsigned int tls_type
, tls_mask
, tls_gd
;
4707 r_type
= ELF32_R_TYPE (rel
->r_info
);
4711 unresolved_reloc
= FALSE
;
4713 r_symndx
= ELF32_R_SYM (rel
->r_info
);
4715 if (r_symndx
< symtab_hdr
->sh_info
)
4717 sym
= local_syms
+ r_symndx
;
4718 sec
= local_sections
[r_symndx
];
4719 sym_name
= bfd_elf_local_sym_name (input_bfd
, sym
);
4721 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
4725 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
4726 r_symndx
, symtab_hdr
, sym_hashes
,
4728 unresolved_reloc
, warned
);
4730 sym_name
= h
->root
.root
.string
;
4733 /* TLS optimizations. Replace instruction sequences and relocs
4734 based on information we collected in tls_optimize. We edit
4735 RELOCS so that --emit-relocs will output something sensible
4736 for the final instruction stream. */
4739 if (IS_PPC_TLS_RELOC (r_type
))
4742 tls_mask
= ((struct ppc_elf_link_hash_entry
*) h
)->tls_mask
;
4743 else if (local_got_offsets
!= NULL
)
4746 lgot_masks
= (char *) (local_got_offsets
+ symtab_hdr
->sh_info
);
4747 tls_mask
= lgot_masks
[r_symndx
];
4751 /* Ensure reloc mapping code below stays sane. */
4752 if ((R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TLSGD16
& 3)
4753 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TLSGD16_LO
& 3)
4754 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TLSGD16_HI
& 3)
4755 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TLSGD16_HA
& 3)
4756 || (R_PPC_GOT_TLSLD16
& 3) != (R_PPC_GOT_TPREL16
& 3)
4757 || (R_PPC_GOT_TLSLD16_LO
& 3) != (R_PPC_GOT_TPREL16_LO
& 3)
4758 || (R_PPC_GOT_TLSLD16_HI
& 3) != (R_PPC_GOT_TPREL16_HI
& 3)
4759 || (R_PPC_GOT_TLSLD16_HA
& 3) != (R_PPC_GOT_TPREL16_HA
& 3))
4766 case R_PPC_GOT_TPREL16
:
4767 case R_PPC_GOT_TPREL16_LO
:
4769 && (tls_mask
& TLS_TPREL
) == 0)
4772 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- 2);
4774 insn
|= 0x3c020000; /* addis 0,2,0 */
4775 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- 2);
4776 r_type
= R_PPC_TPREL16_HA
;
4777 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
4783 && (tls_mask
& TLS_TPREL
) == 0)
4786 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
4787 if ((insn
& ((31 << 26) | (31 << 11)))
4788 == ((31 << 26) | (2 << 11)))
4789 rtra
= insn
& ((1 << 26) - (1 << 16));
4790 else if ((insn
& ((31 << 26) | (31 << 16)))
4791 == ((31 << 26) | (2 << 16)))
4792 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
4795 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
4798 else if ((insn
& (31 << 1)) == 23 << 1
4799 && ((insn
& (31 << 6)) < 14 << 6
4800 || ((insn
& (31 << 6)) >= 16 << 6
4801 && (insn
& (31 << 6)) < 24 << 6)))
4802 /* load and store indexed -> dform. */
4803 insn
= (32 | ((insn
>> 6) & 31)) << 26;
4804 else if ((insn
& (31 << 1)) == 21 << 1
4805 && (insn
& (0x1a << 6)) == 0)
4806 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4807 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
4808 | ((insn
>> 6) & 1));
4809 else if ((insn
& (31 << 1)) == 21 << 1
4810 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
4812 insn
= (58 << 26) | 2;
4816 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
4817 r_type
= R_PPC_TPREL16_LO
;
4818 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
4819 /* Was PPC_TLS which sits on insn boundary, now
4820 PPC_TPREL16_LO which is at insn+2. */
4825 case R_PPC_GOT_TLSGD16_HI
:
4826 case R_PPC_GOT_TLSGD16_HA
:
4827 tls_gd
= TLS_TPRELGD
;
4828 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
4832 case R_PPC_GOT_TLSLD16_HI
:
4833 case R_PPC_GOT_TLSLD16_HA
:
4834 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
4837 if ((tls_mask
& tls_gd
) != 0)
4838 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
4839 + R_PPC_GOT_TPREL16
);
4842 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
4844 r_type
= R_PPC_NONE
;
4846 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
4850 case R_PPC_GOT_TLSGD16
:
4851 case R_PPC_GOT_TLSGD16_LO
:
4852 tls_gd
= TLS_TPRELGD
;
4853 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
4854 goto tls_get_addr_check
;
4857 case R_PPC_GOT_TLSLD16
:
4858 case R_PPC_GOT_TLSLD16_LO
:
4859 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
4862 if (rel
+ 1 < relend
)
4864 enum elf_ppc_reloc_type r_type2
;
4865 unsigned long r_symndx2
;
4866 struct elf_link_hash_entry
*h2
;
4867 bfd_vma insn1
, insn2
;
4870 /* The next instruction should be a call to
4871 __tls_get_addr. Peek at the reloc to be sure. */
4872 r_type2
= ELF32_R_TYPE (rel
[1].r_info
);
4873 r_symndx2
= ELF32_R_SYM (rel
[1].r_info
);
4874 if (r_symndx2
< symtab_hdr
->sh_info
4875 || (r_type2
!= R_PPC_REL14
4876 && r_type2
!= R_PPC_REL14_BRTAKEN
4877 && r_type2
!= R_PPC_REL14_BRNTAKEN
4878 && r_type2
!= R_PPC_REL24
4879 && r_type2
!= R_PPC_PLTREL24
))
4882 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
4883 while (h2
->root
.type
== bfd_link_hash_indirect
4884 || h2
->root
.type
== bfd_link_hash_warning
)
4885 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
4886 if (h2
== NULL
|| h2
!= htab
->tls_get_addr
)
4889 /* OK, it checks out. Replace the call. */
4890 offset
= rel
[1].r_offset
;
4891 insn1
= bfd_get_32 (output_bfd
,
4892 contents
+ rel
->r_offset
- 2);
4893 if ((tls_mask
& tls_gd
) != 0)
4896 insn1
&= (1 << 26) - 1;
4897 insn1
|= 32 << 26; /* lwz */
4898 insn2
= 0x7c631214; /* add 3,3,2 */
4899 rel
[1].r_info
= ELF32_R_INFO (r_symndx2
, R_PPC_NONE
);
4900 r_type
= (((r_type
- (R_PPC_GOT_TLSGD16
& 3)) & 3)
4901 + R_PPC_GOT_TPREL16
);
4902 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
4907 insn1
= 0x3c620000; /* addis 3,2,0 */
4908 insn2
= 0x38630000; /* addi 3,3,0 */
4911 /* Was an LD reloc. */
4913 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
4914 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
4916 r_type
= R_PPC_TPREL16_HA
;
4917 rel
->r_info
= ELF32_R_INFO (r_symndx
, r_type
);
4918 rel
[1].r_info
= ELF32_R_INFO (r_symndx
,
4920 rel
[1].r_offset
+= 2;
4922 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- 2);
4923 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
4926 /* We changed the symbol on an LD reloc. Start over
4927 in order to get h, sym, sec etc. right. */
4936 /* Handle other relocations that tweak non-addend part of insn. */
4943 /* Branch taken prediction relocations. */
4944 case R_PPC_ADDR14_BRTAKEN
:
4945 case R_PPC_REL14_BRTAKEN
:
4946 branch_bit
= BRANCH_PREDICT_BIT
;
4949 /* Branch not taken prediction relocations. */
4950 case R_PPC_ADDR14_BRNTAKEN
:
4951 case R_PPC_REL14_BRNTAKEN
:
4952 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
4953 insn
&= ~BRANCH_PREDICT_BIT
;
4956 from
= (rel
->r_offset
4957 + input_section
->output_offset
4958 + input_section
->output_section
->vma
);
4960 /* Invert 'y' bit if not the default. */
4961 if ((bfd_signed_vma
) (relocation
+ rel
->r_addend
- from
) < 0)
4962 insn
^= BRANCH_PREDICT_BIT
;
4964 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
4968 addend
= rel
->r_addend
;
4971 if (r_type
< R_PPC_max
)
4972 howto
= ppc_elf_howto_table
[r_type
];
4976 (*_bfd_error_handler
)
4977 (_("%s: unknown relocation type %d for symbol %s"),
4978 bfd_archive_filename (input_bfd
), (int) r_type
, sym_name
);
4980 bfd_set_error (bfd_error_bad_value
);
4986 case R_PPC_EMB_MRKREF
:
4987 case R_PPC_GNU_VTINHERIT
:
4988 case R_PPC_GNU_VTENTRY
:
4991 /* GOT16 relocations. Like an ADDR16 using the symbol's
4992 address in the GOT as relocation value instead of the
4993 symbol's value itself. Also, create a GOT entry for the
4994 symbol and put the symbol value there. */
4995 case R_PPC_GOT_TLSGD16
:
4996 case R_PPC_GOT_TLSGD16_LO
:
4997 case R_PPC_GOT_TLSGD16_HI
:
4998 case R_PPC_GOT_TLSGD16_HA
:
4999 tls_type
= TLS_TLS
| TLS_GD
;
5002 case R_PPC_GOT_TLSLD16
:
5003 case R_PPC_GOT_TLSLD16_LO
:
5004 case R_PPC_GOT_TLSLD16_HI
:
5005 case R_PPC_GOT_TLSLD16_HA
:
5006 tls_type
= TLS_TLS
| TLS_LD
;
5009 case R_PPC_GOT_TPREL16
:
5010 case R_PPC_GOT_TPREL16_LO
:
5011 case R_PPC_GOT_TPREL16_HI
:
5012 case R_PPC_GOT_TPREL16_HA
:
5013 tls_type
= TLS_TLS
| TLS_TPREL
;
5016 case R_PPC_GOT_DTPREL16
:
5017 case R_PPC_GOT_DTPREL16_LO
:
5018 case R_PPC_GOT_DTPREL16_HI
:
5019 case R_PPC_GOT_DTPREL16_HA
:
5020 tls_type
= TLS_TLS
| TLS_DTPREL
;
5024 case R_PPC_GOT16_LO
:
5025 case R_PPC_GOT16_HI
:
5026 case R_PPC_GOT16_HA
:
5029 /* Relocation is to the entry for this symbol in the global
5035 if (htab
->got
== NULL
)
5039 if (tls_type
== (TLS_TLS
| TLS_LD
)
5041 || !(h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
)))
5042 offp
= &htab
->tlsld_got
.offset
;
5046 dyn
= htab
->elf
.dynamic_sections_created
;
5047 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
, h
)
5049 && SYMBOL_REFERENCES_LOCAL (info
, h
)))
5050 /* This is actually a static link, or it is a
5051 -Bsymbolic link and the symbol is defined
5052 locally, or the symbol was forced to be local
5053 because of a version file. */
5058 unresolved_reloc
= FALSE
;
5060 offp
= &h
->got
.offset
;
5064 if (local_got_offsets
== NULL
)
5066 offp
= &local_got_offsets
[r_symndx
];
5069 /* The offset must always be a multiple of 4. We use the
5070 least significant bit to record whether we have already
5071 processed this entry. */
5077 unsigned int tls_m
= (tls_mask
5078 & (TLS_LD
| TLS_GD
| TLS_DTPREL
5079 | TLS_TPREL
| TLS_TPRELGD
));
5081 if (offp
== &htab
->tlsld_got
.offset
)
5084 || !(h
->elf_link_hash_flags
5085 & ELF_LINK_HASH_DEF_DYNAMIC
))
5088 /* We might have multiple got entries for this sym.
5089 Initialize them all. */
5094 if ((tls_m
& TLS_LD
) != 0)
5096 tls_ty
= TLS_TLS
| TLS_LD
;
5099 else if ((tls_m
& TLS_GD
) != 0)
5101 tls_ty
= TLS_TLS
| TLS_GD
;
5104 else if ((tls_m
& TLS_DTPREL
) != 0)
5106 tls_ty
= TLS_TLS
| TLS_DTPREL
;
5107 tls_m
&= ~TLS_DTPREL
;
5109 else if ((tls_m
& (TLS_TPREL
| TLS_TPRELGD
)) != 0)
5111 tls_ty
= TLS_TLS
| TLS_TPREL
;
5115 /* Generate relocs for the dynamic linker. */
5116 if ((info
->shared
|| indx
!= 0)
5118 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5119 || h
->root
.type
!= bfd_link_hash_undefweak
))
5121 outrel
.r_offset
= (htab
->got
->output_section
->vma
5122 + htab
->got
->output_offset
5124 outrel
.r_addend
= 0;
5125 if (tls_ty
& (TLS_LD
| TLS_GD
))
5127 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPMOD32
);
5128 if (tls_ty
== (TLS_TLS
| TLS_GD
))
5130 loc
= htab
->relgot
->contents
;
5131 loc
+= (htab
->relgot
->reloc_count
++
5132 * sizeof (Elf32_External_Rela
));
5133 bfd_elf32_swap_reloca_out (output_bfd
,
5135 outrel
.r_offset
+= 4;
5137 = ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
5140 else if (tls_ty
== (TLS_TLS
| TLS_DTPREL
))
5141 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_DTPREL32
);
5142 else if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
5143 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_TPREL32
);
5145 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_RELATIVE
);
5147 outrel
.r_info
= ELF32_R_INFO (indx
, R_PPC_GLOB_DAT
);
5150 outrel
.r_addend
+= relocation
;
5151 if (tls_ty
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
5152 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
5154 loc
= htab
->relgot
->contents
;
5155 loc
+= (htab
->relgot
->reloc_count
++
5156 * sizeof (Elf32_External_Rela
));
5157 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5160 /* Init the .got section contents if we're not
5161 emitting a reloc. */
5164 bfd_vma value
= relocation
;
5166 if (tls_ty
== (TLS_TLS
| TLS_LD
))
5168 else if (tls_ty
!= 0)
5170 value
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5171 if (tls_ty
== (TLS_TLS
| TLS_TPREL
))
5172 value
+= DTP_OFFSET
- TP_OFFSET
;
5174 if (tls_ty
== (TLS_TLS
| TLS_GD
))
5176 bfd_put_32 (output_bfd
, value
,
5177 htab
->got
->contents
+ off
+ 4);
5181 bfd_put_32 (output_bfd
, value
,
5182 htab
->got
->contents
+ off
);
5186 if (tls_ty
& (TLS_LD
| TLS_GD
))
5195 if (off
>= (bfd_vma
) -2)
5198 if ((tls_type
& TLS_TLS
) != 0)
5200 if (tls_type
!= (TLS_TLS
| TLS_LD
))
5202 if ((tls_mask
& TLS_LD
) != 0
5204 || !(h
->elf_link_hash_flags
5205 & ELF_LINK_HASH_DEF_DYNAMIC
)))
5207 if (tls_type
!= (TLS_TLS
| TLS_GD
))
5209 if ((tls_mask
& TLS_GD
) != 0)
5211 if (tls_type
!= (TLS_TLS
| TLS_DTPREL
))
5213 if ((tls_mask
& TLS_DTPREL
) != 0)
5220 relocation
= htab
->got
->output_offset
+ off
- 4;
5222 /* Addends on got relocations don't make much sense.
5223 x+off@got is actually x@got+off, and since the got is
5224 generated by a hash table traversal, the value in the
5225 got at entry m+n bears little relation to the entry m. */
5227 (*_bfd_error_handler
)
5228 (_("%s(%s+0x%lx): non-zero addend on %s reloc against `%s'"),
5229 bfd_archive_filename (input_bfd
),
5230 bfd_get_section_name (input_bfd
, input_section
),
5231 (long) rel
->r_offset
,
5237 /* Relocations that need no special processing. */
5238 case R_PPC_LOCAL24PC
:
5239 /* It makes no sense to point a local relocation
5240 at a symbol not in this object. */
5241 if (unresolved_reloc
)
5243 if (! (*info
->callbacks
->undefined_symbol
) (info
,
5244 h
->root
.root
.string
,
5254 case R_PPC_DTPREL16
:
5255 case R_PPC_DTPREL16_LO
:
5256 case R_PPC_DTPREL16_HI
:
5257 case R_PPC_DTPREL16_HA
:
5258 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5261 /* Relocations that may need to be propagated if this is a shared
5264 case R_PPC_TPREL16_LO
:
5265 case R_PPC_TPREL16_HI
:
5266 case R_PPC_TPREL16_HA
:
5267 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
5268 /* The TPREL16 relocs shouldn't really be used in shared
5269 libs as they will result in DT_TEXTREL being set, but
5270 support them anyway. */
5274 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
5277 case R_PPC_DTPREL32
:
5278 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
5281 case R_PPC_DTPMOD32
:
5289 case R_PPC_REL14_BRTAKEN
:
5290 case R_PPC_REL14_BRNTAKEN
:
5291 /* If these relocations are not to a named symbol, they can be
5292 handled right here, no need to bother the dynamic linker. */
5293 if (SYMBOL_REFERENCES_LOCAL (info
, h
)
5294 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
5298 /* Relocations that always need to be propagated if this is a shared
5303 case R_PPC_ADDR16_LO
:
5304 case R_PPC_ADDR16_HI
:
5305 case R_PPC_ADDR16_HA
:
5307 case R_PPC_ADDR14_BRTAKEN
:
5308 case R_PPC_ADDR14_BRNTAKEN
:
5311 /* r_symndx will be zero only for relocs against symbols
5312 from removed linkonce sections, or sections discarded by
5321 || ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
5322 || h
->root
.type
!= bfd_link_hash_undefweak
)
5323 && (MUST_BE_DYN_RELOC (r_type
)
5324 || !SYMBOL_CALLS_LOCAL (info
, h
)))
5325 || (ELIMINATE_COPY_RELOCS
5327 && (input_section
->flags
& SEC_ALLOC
) != 0
5330 && (h
->elf_link_hash_flags
& ELF_LINK_NON_GOT_REF
) == 0
5331 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0
5332 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0))
5337 fprintf (stderr
, "ppc_elf_relocate_section needs to "
5338 "create relocation for %s\n",
5339 (h
&& h
->root
.root
.string
5340 ? h
->root
.root
.string
: "<unknown>"));
5343 /* When generating a shared object, these relocations
5344 are copied into the output file to be resolved at run
5350 name
= (bfd_elf_string_from_elf_section
5352 elf_elfheader (input_bfd
)->e_shstrndx
,
5353 elf_section_data (input_section
)->rel_hdr
.sh_name
));
5357 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
5358 && strcmp (bfd_get_section_name (input_bfd
,
5362 sreloc
= bfd_get_section_by_name (htab
->elf
.dynobj
, name
);
5363 BFD_ASSERT (sreloc
!= NULL
);
5369 _bfd_elf_section_offset (output_bfd
, info
, input_section
,
5371 if (outrel
.r_offset
== (bfd_vma
) -1
5372 || outrel
.r_offset
== (bfd_vma
) -2)
5373 skip
= (int) outrel
.r_offset
;
5374 outrel
.r_offset
+= (input_section
->output_section
->vma
5375 + input_section
->output_offset
);
5378 memset (&outrel
, 0, sizeof outrel
);
5379 else if (!SYMBOL_REFERENCES_LOCAL (info
, h
))
5381 unresolved_reloc
= FALSE
;
5382 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
5383 outrel
.r_addend
= rel
->r_addend
;
5387 outrel
.r_addend
= relocation
+ rel
->r_addend
;
5389 if (r_type
== R_PPC_ADDR32
)
5390 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
5395 if (bfd_is_abs_section (sec
))
5397 else if (sec
== NULL
|| sec
->owner
== NULL
)
5399 bfd_set_error (bfd_error_bad_value
);
5406 /* We are turning this relocation into one
5407 against a section symbol. It would be
5408 proper to subtract the symbol's value,
5409 osec->vma, from the emitted reloc addend,
5410 but ld.so expects buggy relocs. */
5411 osec
= sec
->output_section
;
5412 indx
= elf_section_data (osec
)->dynindx
;
5413 BFD_ASSERT (indx
> 0);
5416 printf ("indx=%d section=%s flags=%08x name=%s\n",
5417 indx
, osec
->name
, osec
->flags
,
5418 h
->root
.root
.string
);
5422 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
5426 loc
= sreloc
->contents
;
5427 loc
+= sreloc
->reloc_count
++ * sizeof (Elf32_External_Rela
);
5428 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
, loc
);
5433 /* This reloc will be computed at runtime. We clear the memory
5434 so that it contains predictable value. */
5436 && ((input_section
->flags
& SEC_ALLOC
) != 0
5437 || ELF32_R_TYPE (outrel
.r_info
) != R_PPC_RELATIVE
))
5439 relocation
= howto
->pc_relative
? outrel
.r_offset
: 0;
5446 case R_PPC_RELAX32PC
:
5447 relocation
-= (input_section
->output_section
->vma
5448 + input_section
->output_offset
5449 + rel
->r_offset
- 4);
5456 t0
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5457 t1
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
+ 4);
5459 /* We're clearing the bits for R_PPC_ADDR16_HA
5460 and R_PPC_ADDR16_LO here. */
5464 /* t0 is HA, t1 is LO */
5465 relocation
+= addend
;
5466 t0
|= ((relocation
+ 0x8000) >> 16) & 0xffff;
5467 t1
|= relocation
& 0xffff;
5469 bfd_put_32 (output_bfd
, t0
, contents
+ rel
->r_offset
);
5470 bfd_put_32 (output_bfd
, t1
, contents
+ rel
->r_offset
+ 4);
5474 /* Indirect .sdata relocation. */
5475 case R_PPC_EMB_SDAI16
:
5476 BFD_ASSERT (htab
->sdata
!= NULL
);
5478 = elf_finish_pointer_linker_section (output_bfd
, input_bfd
, info
,
5479 htab
->sdata
, h
, relocation
,
5480 rel
, R_PPC_RELATIVE
);
5483 /* Indirect .sdata2 relocation. */
5484 case R_PPC_EMB_SDA2I16
:
5485 BFD_ASSERT (htab
->sdata2
!= NULL
);
5487 = elf_finish_pointer_linker_section (output_bfd
, input_bfd
, info
,
5488 htab
->sdata2
, h
, relocation
,
5489 rel
, R_PPC_RELATIVE
);
5492 /* Handle the TOC16 reloc. We want to use the offset within the .got
5493 section, not the actual VMA. This is appropriate when generating
5494 an embedded ELF object, for which the .got section acts like the
5495 AIX .toc section. */
5496 case R_PPC_TOC16
: /* phony GOT16 relocations */
5497 BFD_ASSERT (sec
!= NULL
);
5498 BFD_ASSERT (bfd_is_und_section (sec
)
5499 || strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
5500 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0)
5502 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
5505 case R_PPC_PLTREL24
:
5506 /* Relocation is to the entry for this symbol in the
5507 procedure linkage table. */
5508 BFD_ASSERT (h
!= NULL
);
5510 if (h
->plt
.offset
== (bfd_vma
) -1
5511 || htab
->plt
== NULL
)
5513 /* We didn't make a PLT entry for this symbol. This
5514 happens when statically linking PIC code, or when
5515 using -Bsymbolic. */
5519 unresolved_reloc
= FALSE
;
5520 relocation
= (htab
->plt
->output_section
->vma
5521 + htab
->plt
->output_offset
5525 /* Relocate against _SDA_BASE_. */
5526 case R_PPC_SDAREL16
:
5529 const struct elf_link_hash_entry
*sh
;
5531 BFD_ASSERT (sec
!= NULL
);
5532 name
= bfd_get_section_name (abfd
, sec
->output_section
);
5533 if (! ((strncmp (name
, ".sdata", 6) == 0
5534 && (name
[6] == 0 || name
[6] == '.'))
5535 || (strncmp (name
, ".sbss", 5) == 0
5536 && (name
[5] == 0 || name
[5] == '.'))))
5538 (*_bfd_error_handler
)
5539 (_("%s: the target (%s) of a %s relocation is "
5540 "in the wrong output section (%s)"),
5541 bfd_archive_filename (input_bfd
),
5546 sh
= htab
->sdata
->sym_hash
;
5547 addend
-= (sh
->root
.u
.def
.value
5548 + sh
->root
.u
.def
.section
->output_section
->vma
5549 + sh
->root
.u
.def
.section
->output_offset
);
5553 /* Relocate against _SDA2_BASE_. */
5554 case R_PPC_EMB_SDA2REL
:
5557 const struct elf_link_hash_entry
*sh
;
5559 BFD_ASSERT (sec
!= NULL
);
5560 name
= bfd_get_section_name (abfd
, sec
->output_section
);
5561 if (! (strncmp (name
, ".sdata2", 7) == 0
5562 || strncmp (name
, ".sbss2", 6) == 0))
5564 (*_bfd_error_handler
)
5565 (_("%s: the target (%s) of a %s relocation is "
5566 "in the wrong output section (%s)"),
5567 bfd_archive_filename (input_bfd
),
5572 bfd_set_error (bfd_error_bad_value
);
5576 sh
= htab
->sdata2
->sym_hash
;
5577 addend
-= (sh
->root
.u
.def
.value
5578 + sh
->root
.u
.def
.section
->output_section
->vma
5579 + sh
->root
.u
.def
.section
->output_offset
);
5583 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
5584 case R_PPC_EMB_SDA21
:
5585 case R_PPC_EMB_RELSDA
:
5588 const struct elf_link_hash_entry
*sh
;
5591 BFD_ASSERT (sec
!= NULL
);
5592 name
= bfd_get_section_name (abfd
, sec
->output_section
);
5593 if (((strncmp (name
, ".sdata", 6) == 0
5594 && (name
[6] == 0 || name
[6] == '.'))
5595 || (strncmp (name
, ".sbss", 5) == 0
5596 && (name
[5] == 0 || name
[5] == '.'))))
5599 sh
= htab
->sdata
->sym_hash
;
5600 addend
-= (sh
->root
.u
.def
.value
5601 + sh
->root
.u
.def
.section
->output_section
->vma
5602 + sh
->root
.u
.def
.section
->output_offset
);
5605 else if (strncmp (name
, ".sdata2", 7) == 0
5606 || strncmp (name
, ".sbss2", 6) == 0)
5609 sh
= htab
->sdata2
->sym_hash
;
5610 addend
-= (sh
->root
.u
.def
.value
5611 + sh
->root
.u
.def
.section
->output_section
->vma
5612 + sh
->root
.u
.def
.section
->output_offset
);
5615 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0
5616 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
5623 (*_bfd_error_handler
)
5624 (_("%s: the target (%s) of a %s relocation is "
5625 "in the wrong output section (%s)"),
5626 bfd_archive_filename (input_bfd
),
5631 bfd_set_error (bfd_error_bad_value
);
5636 if (r_type
== R_PPC_EMB_SDA21
)
5637 { /* fill in register field */
5638 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
5639 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
5640 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
5645 /* Relocate against the beginning of the section. */
5647 case R_PPC_SECTOFF_LO
:
5648 case R_PPC_SECTOFF_HI
:
5649 case R_PPC_SECTOFF_HA
:
5650 BFD_ASSERT (sec
!= NULL
);
5651 addend
-= sec
->output_section
->vma
;
5654 /* Negative relocations. */
5655 case R_PPC_EMB_NADDR32
:
5656 case R_PPC_EMB_NADDR16
:
5657 case R_PPC_EMB_NADDR16_LO
:
5658 case R_PPC_EMB_NADDR16_HI
:
5659 case R_PPC_EMB_NADDR16_HA
:
5660 addend
-= 2 * relocation
;
5664 case R_PPC_GLOB_DAT
:
5665 case R_PPC_JMP_SLOT
:
5666 case R_PPC_RELATIVE
:
5668 case R_PPC_PLTREL32
:
5669 case R_PPC_PLT16_LO
:
5670 case R_PPC_PLT16_HI
:
5671 case R_PPC_PLT16_HA
:
5673 case R_PPC_EMB_RELSEC16
:
5674 case R_PPC_EMB_RELST_LO
:
5675 case R_PPC_EMB_RELST_HI
:
5676 case R_PPC_EMB_RELST_HA
:
5677 case R_PPC_EMB_BIT_FLD
:
5678 (*_bfd_error_handler
)
5679 (_("%s: relocation %s is not yet supported for symbol %s."),
5680 bfd_archive_filename (input_bfd
),
5684 bfd_set_error (bfd_error_invalid_operation
);
5689 /* Do any further special processing. */
5695 case R_PPC_ADDR16_HA
:
5696 case R_PPC_GOT16_HA
:
5697 case R_PPC_PLT16_HA
:
5698 case R_PPC_SECTOFF_HA
:
5699 case R_PPC_TPREL16_HA
:
5700 case R_PPC_DTPREL16_HA
:
5701 case R_PPC_GOT_TLSGD16_HA
:
5702 case R_PPC_GOT_TLSLD16_HA
:
5703 case R_PPC_GOT_TPREL16_HA
:
5704 case R_PPC_GOT_DTPREL16_HA
:
5705 case R_PPC_EMB_NADDR16_HA
:
5706 case R_PPC_EMB_RELST_HA
:
5707 /* It's just possible that this symbol is a weak symbol
5708 that's not actually defined anywhere. In that case,
5709 'sec' would be NULL, and we should leave the symbol
5710 alone (it will be set to zero elsewhere in the link). */
5712 /* Add 0x10000 if sign bit in 0:15 is set.
5713 Bits 0:15 are not used. */
5719 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5720 "offset = %ld, addend = %ld\n",
5725 (long) rel
->r_offset
,
5729 if (unresolved_reloc
5730 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
5731 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) != 0))
5733 (*_bfd_error_handler
)
5734 (_("%s(%s+0x%lx): unresolvable %s relocation against symbol `%s'"),
5735 bfd_archive_filename (input_bfd
),
5736 bfd_get_section_name (input_bfd
, input_section
),
5737 (long) rel
->r_offset
,
5743 r
= _bfd_final_link_relocate (howto
,
5751 if (r
!= bfd_reloc_ok
)
5753 if (sym_name
== NULL
)
5754 sym_name
= "(null)";
5755 if (r
== bfd_reloc_overflow
)
5760 && h
->root
.type
== bfd_link_hash_undefweak
5761 && howto
->pc_relative
)
5763 /* Assume this is a call protected by other code that
5764 detect the symbol is undefined. If this is the case,
5765 we can safely ignore the overflow. If not, the
5766 program is hosed anyway, and a little warning isn't
5772 if (! (*info
->callbacks
->reloc_overflow
) (info
,
5783 (*_bfd_error_handler
)
5784 (_("%s(%s+0x%lx): %s reloc against `%s': error %d"),
5785 bfd_archive_filename (input_bfd
),
5786 bfd_get_section_name (input_bfd
, input_section
),
5787 (long) rel
->r_offset
, howto
->name
, sym_name
, (int) r
);
5794 fprintf (stderr
, "\n");
5800 static enum elf_reloc_type_class
5801 ppc_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
5803 switch (ELF32_R_TYPE (rela
->r_info
))
5805 case R_PPC_RELATIVE
:
5806 return reloc_class_relative
;
5809 case R_PPC_JMP_SLOT
:
5810 return reloc_class_plt
;
5812 return reloc_class_copy
;
5814 return reloc_class_normal
;
5818 /* Support for core dump NOTE sections. */
5821 ppc_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
5826 switch (note
->descsz
)
5831 case 268: /* Linux/PPC. */
5833 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
5836 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 24);
5845 /* Make a ".reg/999" section. */
5846 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
5847 size
, note
->descpos
+ offset
);
5851 ppc_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
5853 switch (note
->descsz
)
5858 case 128: /* Linux/PPC elf_prpsinfo. */
5859 elf_tdata (abfd
)->core_program
5860 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 32, 16);
5861 elf_tdata (abfd
)->core_command
5862 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 48, 80);
5865 /* Note that for some reason, a spurious space is tacked
5866 onto the end of the args in some (at least one anyway)
5867 implementations, so strip it off if it exists. */
5870 char *command
= elf_tdata (abfd
)->core_command
;
5871 int n
= strlen (command
);
5873 if (0 < n
&& command
[n
- 1] == ' ')
5874 command
[n
- 1] = '\0';
5880 /* Very simple linked list structure for recording apuinfo values. */
5881 typedef struct apuinfo_list
5883 struct apuinfo_list
*next
;
5884 unsigned long value
;
5888 static apuinfo_list
*head
;
5892 apuinfo_list_init (void)
5898 apuinfo_list_add (unsigned long value
)
5900 apuinfo_list
*entry
= head
;
5902 while (entry
!= NULL
)
5904 if (entry
->value
== value
)
5906 entry
= entry
->next
;
5909 entry
= bfd_malloc (sizeof (* entry
));
5913 entry
->value
= value
;
5919 apuinfo_list_length (void)
5921 apuinfo_list
*entry
;
5922 unsigned long count
;
5924 for (entry
= head
, count
= 0;
5926 entry
= entry
->next
)
5932 static inline unsigned long
5933 apuinfo_list_element (unsigned long number
)
5935 apuinfo_list
* entry
;
5939 entry
= entry
->next
)
5942 return entry
? entry
->value
: 0;
5946 apuinfo_list_finish (void)
5948 apuinfo_list
*entry
;
5950 for (entry
= head
; entry
;)
5952 apuinfo_list
*next
= entry
->next
;
5960 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
5961 #define APUINFO_LABEL "APUinfo"
5963 /* Scan the input BFDs and create a linked list of
5964 the APUinfo values that will need to be emitted. */
5967 ppc_elf_begin_write_processing (bfd
*abfd
, struct bfd_link_info
*link_info
)
5972 unsigned num_input_sections
;
5973 bfd_size_type output_section_size
;
5975 unsigned num_entries
;
5976 unsigned long offset
;
5977 unsigned long length
;
5978 const char *error_message
= NULL
;
5980 if (link_info
== NULL
)
5983 /* Scan the input bfds, looking for apuinfo sections. */
5984 num_input_sections
= 0;
5985 output_section_size
= 0;
5987 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
5989 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
5992 ++ num_input_sections
;
5993 output_section_size
+= asec
->size
;
5997 /* We need at least one input sections
5998 in order to make merging worthwhile. */
5999 if (num_input_sections
< 1)
6002 /* Just make sure that the output section exists as well. */
6003 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
6007 /* Allocate a buffer for the contents of the input sections. */
6008 buffer
= bfd_malloc (output_section_size
);
6013 apuinfo_list_init ();
6015 /* Read in the input sections contents. */
6016 for (ibfd
= link_info
->input_bfds
; ibfd
; ibfd
= ibfd
->link_next
)
6018 unsigned long datum
;
6021 asec
= bfd_get_section_by_name (ibfd
, APUINFO_SECTION_NAME
);
6025 length
= asec
->size
;
6028 error_message
= _("corrupt or empty %s section in %s");
6032 if (bfd_seek (ibfd
, asec
->filepos
, SEEK_SET
) != 0
6033 || (bfd_bread (buffer
+ offset
, length
, ibfd
) != length
))
6035 error_message
= _("unable to read in %s section from %s");
6039 /* Process the contents of the section. */
6040 ptr
= buffer
+ offset
;
6041 error_message
= _("corrupt %s section in %s");
6043 /* Verify the contents of the header. Note - we have to
6044 extract the values this way in order to allow for a
6045 host whose endian-ness is different from the target. */
6046 datum
= bfd_get_32 (ibfd
, ptr
);
6047 if (datum
!= sizeof APUINFO_LABEL
)
6050 datum
= bfd_get_32 (ibfd
, ptr
+ 8);
6054 if (strcmp (ptr
+ 12, APUINFO_LABEL
) != 0)
6057 /* Get the number of bytes used for apuinfo entries. */
6058 datum
= bfd_get_32 (ibfd
, ptr
+ 4);
6059 if (datum
+ 20 != length
)
6062 /* Make sure that we do not run off the end of the section. */
6063 if (offset
+ length
> output_section_size
)
6066 /* Scan the apuinfo section, building a list of apuinfo numbers. */
6067 for (i
= 0; i
< datum
; i
+= 4)
6068 apuinfo_list_add (bfd_get_32 (ibfd
, ptr
+ 20 + i
));
6070 /* Update the offset. */
6074 error_message
= NULL
;
6076 /* Compute the size of the output section. */
6077 num_entries
= apuinfo_list_length ();
6078 output_section_size
= 20 + num_entries
* 4;
6080 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
6082 if (! bfd_set_section_size (abfd
, asec
, output_section_size
))
6084 error_message
= _("warning: unable to set size of %s section in %s");
6090 (*_bfd_error_handler
) (error_message
, APUINFO_SECTION_NAME
,
6091 bfd_archive_filename (ibfd
));
6095 /* Prevent the output section from accumulating the input sections'
6096 contents. We have already stored this in our linked list structure. */
6099 ppc_elf_write_section (bfd
*abfd ATTRIBUTE_UNUSED
,
6101 bfd_byte
*contents ATTRIBUTE_UNUSED
)
6103 return (apuinfo_list_length ()
6104 && strcmp (asec
->name
, APUINFO_SECTION_NAME
) == 0);
6108 /* Finally we can generate the output section. */
6111 ppc_elf_final_write_processing (bfd
*abfd
, bfd_boolean linker ATTRIBUTE_UNUSED
)
6116 unsigned num_entries
;
6117 bfd_size_type length
;
6119 asec
= bfd_get_section_by_name (abfd
, APUINFO_SECTION_NAME
);
6123 if (apuinfo_list_length () == 0)
6126 length
= asec
->size
;
6130 buffer
= bfd_malloc (length
);
6133 (*_bfd_error_handler
)
6134 (_("failed to allocate space for new APUinfo section."));
6138 /* Create the apuinfo header. */
6139 num_entries
= apuinfo_list_length ();
6140 bfd_put_32 (abfd
, sizeof APUINFO_LABEL
, buffer
);
6141 bfd_put_32 (abfd
, num_entries
* 4, buffer
+ 4);
6142 bfd_put_32 (abfd
, 0x2, buffer
+ 8);
6143 strcpy (buffer
+ 12, APUINFO_LABEL
);
6146 for (i
= 0; i
< num_entries
; i
++)
6148 bfd_put_32 (abfd
, apuinfo_list_element (i
), buffer
+ length
);
6152 if (length
!= asec
->size
)
6153 (*_bfd_error_handler
) (_("failed to compute new APUinfo section."));
6155 if (! bfd_set_section_contents (abfd
, asec
, buffer
, (file_ptr
) 0, length
))
6156 (*_bfd_error_handler
) (_("failed to install new APUinfo section."));
6160 apuinfo_list_finish ();
6163 /* Return address for Ith PLT stub in section PLT, for relocation REL
6164 or (bfd_vma) -1 if it should not be included. */
6167 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED
,
6168 const asection
*plt ATTRIBUTE_UNUSED
,
6171 return rel
->address
;
6174 /* Add extra PPC sections -- Note, for now, make .sbss2 and
6175 .PPC.EMB.sbss0 a normal section, and not a bss section so
6176 that the linker doesn't crater when trying to make more than
6179 static struct bfd_elf_special_section
const ppc_elf_special_sections
[]=
6181 { ".tags", 5, 0, SHT_ORDERED
, SHF_ALLOC
},
6182 { ".sdata", 6, -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
6183 { ".sbss", 5, -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
6184 { ".sdata2", 7, -2, SHT_PROGBITS
, SHF_ALLOC
},
6185 { ".sbss2", 6, -2, SHT_PROGBITS
, SHF_ALLOC
},
6186 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE
, 0 },
6187 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS
, SHF_ALLOC
},
6188 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS
, SHF_ALLOC
},
6189 { ".plt", 4, 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_EXECINSTR
},
6190 { NULL
, 0, 0, 0, 0 }
6193 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6194 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6195 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6196 #define TARGET_BIG_NAME "elf32-powerpc"
6197 #define ELF_ARCH bfd_arch_powerpc
6198 #define ELF_MACHINE_CODE EM_PPC
6199 #ifdef __QNXTARGET__
6200 #define ELF_MAXPAGESIZE 0x1000
6202 #define ELF_MAXPAGESIZE 0x10000
6204 #define elf_info_to_howto ppc_elf_info_to_howto
6206 #ifdef EM_CYGNUS_POWERPC
6207 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6211 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6214 #define elf_backend_plt_not_loaded 1
6215 #define elf_backend_got_symbol_offset 4
6216 #define elf_backend_can_gc_sections 1
6217 #define elf_backend_can_refcount 1
6218 #define elf_backend_got_header_size 12
6219 #define elf_backend_rela_normal 1
6221 #define bfd_elf32_mkobject ppc_elf_mkobject
6222 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6223 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6224 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6225 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6226 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6228 #define elf_backend_object_p ppc_elf_object_p
6229 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6230 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6231 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6232 #define elf_backend_relocate_section ppc_elf_relocate_section
6233 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6234 #define elf_backend_check_relocs ppc_elf_check_relocs
6235 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6236 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6237 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6238 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6239 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6240 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6241 #define elf_backend_fake_sections ppc_elf_fake_sections
6242 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6243 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
6244 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6245 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6246 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6247 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6248 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6249 #define elf_backend_write_section ppc_elf_write_section
6250 #define elf_backend_special_sections ppc_elf_special_sections
6251 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6253 #include "elf32-target.h"