1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996 Free Software Foundation, Inc.
3 Written by Ian Lance Taylor, Cygnus Support.
5 This file is part of BFD, the Binary File Descriptor library.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21 /* This file is based on a preliminary PowerPC ELF ABI. The
22 information may not match the final PowerPC ELF ABI. It includes
23 suggestions from the in-progress Embedded PowerPC ABI, and that
24 information may also not match. */
33 #define USE_RELA /* we want RELA relocations, not REL */
35 /* PowerPC relocations defined by the ABIs */
46 R_PPC_ADDR14_BRTAKEN
= 8,
47 R_PPC_ADDR14_BRNTAKEN
= 9,
50 R_PPC_REL14_BRTAKEN
= 12,
51 R_PPC_REL14_BRNTAKEN
= 13,
72 R_PPC_SECTOFF_LO
= 34,
73 R_PPC_SECTOFF_HI
= 35,
74 R_PPC_SECTOFF_HA
= 36,
76 /* The remaining relocs are from the Embedded ELF ABI, and are not
77 in the SVR4 ELF ABI. */
78 R_PPC_EMB_NADDR32
= 101,
79 R_PPC_EMB_NADDR16
= 102,
80 R_PPC_EMB_NADDR16_LO
= 103,
81 R_PPC_EMB_NADDR16_HI
= 104,
82 R_PPC_EMB_NADDR16_HA
= 105,
83 R_PPC_EMB_SDAI16
= 106,
84 R_PPC_EMB_SDA2I16
= 107,
85 R_PPC_EMB_SDA2REL
= 108,
86 R_PPC_EMB_SDA21
= 109,
87 R_PPC_EMB_MRKREF
= 110,
88 R_PPC_EMB_RELSEC16
= 111,
89 R_PPC_EMB_RELST_LO
= 112,
90 R_PPC_EMB_RELST_HI
= 113,
91 R_PPC_EMB_RELST_HA
= 114,
92 R_PPC_EMB_BIT_FLD
= 115,
93 R_PPC_EMB_RELSDA
= 116,
95 /* This is a phony reloc to handle any old fashioned TOC16 references
96 that may still be in object files. */
102 static reloc_howto_type
*ppc_elf_reloc_type_lookup
103 PARAMS ((bfd
*abfd
, bfd_reloc_code_real_type code
));
104 static void ppc_elf_info_to_howto
105 PARAMS ((bfd
*abfd
, arelent
*cache_ptr
, Elf32_Internal_Rela
*dst
));
106 static void ppc_elf_howto_init
PARAMS ((void));
107 static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
108 PARAMS ((bfd
*, arelent
*, asymbol
*, PTR
, asection
*, bfd
*, char **));
109 static boolean ppc_elf_set_private_flags
PARAMS ((bfd
*, flagword
));
110 static boolean ppc_elf_copy_private_bfd_data
PARAMS ((bfd
*, bfd
*));
111 static boolean ppc_elf_merge_private_bfd_data
PARAMS ((bfd
*, bfd
*));
113 static int ppc_elf_additional_program_headers
PARAMS ((bfd
*));
114 static boolean ppc_elf_modify_segment_map
PARAMS ((bfd
*));
116 static boolean ppc_elf_section_from_shdr
PARAMS ((bfd
*,
117 Elf32_Internal_Shdr
*,
120 static elf_linker_section_t
*ppc_elf_create_linker_section
122 struct bfd_link_info
*info
,
123 enum elf_linker_section_enum
));
125 static boolean ppc_elf_check_relocs
PARAMS ((bfd
*,
126 struct bfd_link_info
*,
128 const Elf_Internal_Rela
*));
130 static boolean ppc_elf_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info
*,
131 struct elf_link_hash_entry
*));
133 static boolean ppc_elf_adjust_dynindx
PARAMS ((struct elf_link_hash_entry
*, PTR
));
135 static boolean ppc_elf_size_dynamic_sections
PARAMS ((bfd
*, struct bfd_link_info
*));
137 static boolean ppc_elf_relocate_section
PARAMS ((bfd
*,
138 struct bfd_link_info
*info
,
142 Elf_Internal_Rela
*relocs
,
143 Elf_Internal_Sym
*local_syms
,
146 static boolean ppc_elf_add_symbol_hook
PARAMS ((bfd
*,
147 struct bfd_link_info
*,
148 const Elf_Internal_Sym
*,
154 static boolean ppc_elf_finish_dynamic_symbol
PARAMS ((bfd
*,
155 struct bfd_link_info
*,
156 struct elf_link_hash_entry
*,
157 Elf_Internal_Sym
*));
159 static boolean ppc_elf_finish_dynamic_sections
PARAMS ((bfd
*, struct bfd_link_info
*));
161 #define BRANCH_PREDICT_BIT 0x200000 /* branch prediction bit for branch taken relocs */
162 #define RA_REGISTER_MASK 0x001f0000 /* mask to set RA in memory instructions */
163 #define RA_REGISTER_SHIFT 16 /* value to shift register by to insert RA */
165 /* The name of the dynamic interpreter. This is put in the .interp
168 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
170 /* The size in bytes of an entry in the procedure linkage table, and of the initial size
171 of the plt reserved for the dynamic linker. */
173 #define PLT_ENTRY_SIZE 12
174 #define PLT_INITIAL_ENTRY_SIZE 72
177 static reloc_howto_type
*ppc_elf_howto_table
[ (int)R_PPC_max
];
179 static reloc_howto_type ppc_elf_howto_raw
[] =
181 /* This reloc does nothing. */
182 HOWTO (R_PPC_NONE
, /* type */
184 2, /* size (0 = byte, 1 = short, 2 = long) */
186 false, /* pc_relative */
188 complain_overflow_bitfield
, /* complain_on_overflow */
189 bfd_elf_generic_reloc
, /* special_function */
190 "R_PPC_NONE", /* name */
191 false, /* partial_inplace */
194 false), /* pcrel_offset */
196 /* A standard 32 bit relocation. */
197 HOWTO (R_PPC_ADDR32
, /* type */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
201 false, /* pc_relative */
203 complain_overflow_bitfield
, /* complain_on_overflow */
204 bfd_elf_generic_reloc
, /* special_function */
205 "R_PPC_ADDR32", /* name */
206 false, /* partial_inplace */
208 0xffffffff, /* dst_mask */
209 false), /* pcrel_offset */
211 /* An absolute 26 bit branch; the lower two bits must be zero.
212 FIXME: we don't check that, we just clear them. */
213 HOWTO (R_PPC_ADDR24
, /* type */
215 2, /* size (0 = byte, 1 = short, 2 = long) */
217 false, /* pc_relative */
219 complain_overflow_bitfield
, /* complain_on_overflow */
220 bfd_elf_generic_reloc
, /* special_function */
221 "R_PPC_ADDR24", /* name */
222 false, /* partial_inplace */
224 0x3fffffc, /* dst_mask */
225 false), /* pcrel_offset */
227 /* A standard 16 bit relocation. */
228 HOWTO (R_PPC_ADDR16
, /* type */
230 1, /* size (0 = byte, 1 = short, 2 = long) */
232 false, /* pc_relative */
234 complain_overflow_bitfield
, /* complain_on_overflow */
235 bfd_elf_generic_reloc
, /* special_function */
236 "R_PPC_ADDR16", /* name */
237 false, /* partial_inplace */
239 0xffff, /* dst_mask */
240 false), /* pcrel_offset */
242 /* A 16 bit relocation without overflow. */
243 HOWTO (R_PPC_ADDR16_LO
, /* type */
245 1, /* size (0 = byte, 1 = short, 2 = long) */
247 false, /* pc_relative */
249 complain_overflow_dont
,/* complain_on_overflow */
250 bfd_elf_generic_reloc
, /* special_function */
251 "R_PPC_ADDR16_LO", /* name */
252 false, /* partial_inplace */
254 0xffff, /* dst_mask */
255 false), /* pcrel_offset */
257 /* The high order 16 bits of an address. */
258 HOWTO (R_PPC_ADDR16_HI
, /* type */
260 1, /* size (0 = byte, 1 = short, 2 = long) */
262 false, /* pc_relative */
264 complain_overflow_dont
, /* complain_on_overflow */
265 bfd_elf_generic_reloc
, /* special_function */
266 "R_PPC_ADDR16_HI", /* name */
267 false, /* partial_inplace */
269 0xffff, /* dst_mask */
270 false), /* pcrel_offset */
272 /* The high order 16 bits of an address, plus 1 if the contents of
273 the low 16 bits, treated as a signed number, is negative. */
274 HOWTO (R_PPC_ADDR16_HA
, /* type */
276 1, /* size (0 = byte, 1 = short, 2 = long) */
278 false, /* pc_relative */
280 complain_overflow_dont
, /* complain_on_overflow */
281 ppc_elf_addr16_ha_reloc
, /* special_function */
282 "R_PPC_ADDR16_HA", /* name */
283 false, /* partial_inplace */
285 0xffff, /* dst_mask */
286 false), /* pcrel_offset */
288 /* An absolute 16 bit branch; the lower two bits must be zero.
289 FIXME: we don't check that, we just clear them. */
290 HOWTO (R_PPC_ADDR14
, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 false, /* pc_relative */
296 complain_overflow_bitfield
, /* complain_on_overflow */
297 bfd_elf_generic_reloc
, /* special_function */
298 "R_PPC_ADDR14", /* name */
299 false, /* partial_inplace */
301 0xfffc, /* dst_mask */
302 false), /* pcrel_offset */
304 /* An absolute 16 bit branch, for which bit 10 should be set to
305 indicate that the branch is expected to be taken. The lower two
306 bits must be zero. */
307 HOWTO (R_PPC_ADDR14_BRTAKEN
, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 false, /* pc_relative */
313 complain_overflow_bitfield
, /* complain_on_overflow */
314 bfd_elf_generic_reloc
, /* special_function */
315 "R_PPC_ADDR14_BRTAKEN",/* name */
316 false, /* partial_inplace */
318 0xfffc, /* dst_mask */
319 false), /* pcrel_offset */
321 /* An absolute 16 bit branch, for which bit 10 should be set to
322 indicate that the branch is not expected to be taken. The lower
323 two bits must be zero. */
324 HOWTO (R_PPC_ADDR14_BRNTAKEN
, /* type */
326 2, /* size (0 = byte, 1 = short, 2 = long) */
328 false, /* pc_relative */
330 complain_overflow_bitfield
, /* complain_on_overflow */
331 bfd_elf_generic_reloc
, /* special_function */
332 "R_PPC_ADDR14_BRNTAKEN",/* name */
333 false, /* partial_inplace */
335 0xfffc, /* dst_mask */
336 false), /* pcrel_offset */
338 /* A relative 26 bit branch; the lower two bits must be zero. */
339 HOWTO (R_PPC_REL24
, /* type */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
343 true, /* pc_relative */
345 complain_overflow_signed
, /* complain_on_overflow */
346 bfd_elf_generic_reloc
, /* special_function */
347 "R_PPC_REL24", /* name */
348 false, /* partial_inplace */
350 0x3fffffc, /* dst_mask */
351 true), /* pcrel_offset */
353 /* A relative 16 bit branch; the lower two bits must be zero. */
354 HOWTO (R_PPC_REL14
, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 true, /* pc_relative */
360 complain_overflow_signed
, /* complain_on_overflow */
361 bfd_elf_generic_reloc
, /* special_function */
362 "R_PPC_REL14", /* name */
363 false, /* partial_inplace */
365 0xfffc, /* dst_mask */
366 true), /* pcrel_offset */
368 /* A relative 16 bit branch. Bit 10 should be set to indicate that
369 the branch is expected to be taken. The lower two bits must be
371 HOWTO (R_PPC_REL14_BRTAKEN
, /* type */
373 2, /* size (0 = byte, 1 = short, 2 = long) */
375 true, /* pc_relative */
377 complain_overflow_signed
, /* complain_on_overflow */
378 bfd_elf_generic_reloc
, /* special_function */
379 "R_PPC_REL14_BRTAKEN", /* name */
380 false, /* partial_inplace */
382 0xfffc, /* dst_mask */
383 true), /* pcrel_offset */
385 /* A relative 16 bit branch. Bit 10 should be set to indicate that
386 the branch is not expected to be taken. The lower two bits must
388 HOWTO (R_PPC_REL14_BRNTAKEN
, /* type */
390 2, /* size (0 = byte, 1 = short, 2 = long) */
392 true, /* pc_relative */
394 complain_overflow_signed
, /* complain_on_overflow */
395 bfd_elf_generic_reloc
, /* special_function */
396 "R_PPC_REL14_BRNTAKEN",/* name */
397 false, /* partial_inplace */
399 0xfffc, /* dst_mask */
400 true), /* pcrel_offset */
402 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
404 HOWTO (R_PPC_GOT16
, /* type */
406 1, /* size (0 = byte, 1 = short, 2 = long) */
408 false, /* pc_relative */
410 complain_overflow_signed
, /* complain_on_overflow */
411 bfd_elf_generic_reloc
, /* special_function */
412 "R_PPC_GOT16", /* name */
413 false, /* partial_inplace */
415 0xffff, /* dst_mask */
416 false), /* pcrel_offset */
418 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
420 HOWTO (R_PPC_GOT16_LO
, /* type */
422 1, /* size (0 = byte, 1 = short, 2 = long) */
424 false, /* pc_relative */
426 complain_overflow_bitfield
, /* complain_on_overflow */
427 bfd_elf_generic_reloc
, /* special_function */
428 "R_PPC_GOT16_LO", /* name */
429 false, /* partial_inplace */
431 0xffff, /* dst_mask */
432 false), /* pcrel_offset */
434 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
436 HOWTO (R_PPC_GOT16_HI
, /* type */
438 1, /* size (0 = byte, 1 = short, 2 = long) */
440 false, /* pc_relative */
442 complain_overflow_bitfield
, /* complain_on_overflow */
443 bfd_elf_generic_reloc
, /* special_function */
444 "R_PPC_GOT16_HI", /* name */
445 false, /* partial_inplace */
447 0xffff, /* dst_mask */
448 false), /* pcrel_offset */
450 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
452 HOWTO (R_PPC_GOT16_HA
, /* type */
454 1, /* size (0 = byte, 1 = short, 2 = long) */
456 false, /* pc_relative */
458 complain_overflow_bitfield
, /* complain_on_overflow */
459 bfd_elf_generic_reloc
, /* special_function */
460 "R_PPC_GOT16_HA", /* name */
461 false, /* partial_inplace */
463 0xffff, /* dst_mask */
464 false), /* pcrel_offset */
466 /* Like R_PPC_REL24, but referring to the procedure linkage table
467 entry for the symbol. FIXME: Not supported. */
468 HOWTO (R_PPC_PLTREL24
, /* type */
470 2, /* size (0 = byte, 1 = short, 2 = long) */
472 true, /* pc_relative */
474 complain_overflow_signed
, /* complain_on_overflow */
475 bfd_elf_generic_reloc
, /* special_function */
476 "R_PPC_PLTREL24", /* name */
477 false, /* partial_inplace */
479 0x3fffffc, /* dst_mask */
480 true), /* pcrel_offset */
482 /* This is used only by the dynamic linker. The symbol should exist
483 both in the object being run and in some shared library. The
484 dynamic linker copies the data addressed by the symbol from the
485 shared library into the object. I have no idea what the purpose
487 HOWTO (R_PPC_COPY
, /* type */
489 2, /* size (0 = byte, 1 = short, 2 = long) */
491 false, /* pc_relative */
493 complain_overflow_bitfield
, /* complain_on_overflow */
494 bfd_elf_generic_reloc
, /* special_function */
495 "R_PPC_COPY", /* name */
496 false, /* partial_inplace */
499 false), /* pcrel_offset */
501 /* Like R_PPC_ADDR32, but used when setting global offset table
503 HOWTO (R_PPC_GLOB_DAT
, /* type */
505 2, /* size (0 = byte, 1 = short, 2 = long) */
507 false, /* pc_relative */
509 complain_overflow_bitfield
, /* complain_on_overflow */
510 bfd_elf_generic_reloc
, /* special_function */
511 "R_PPC_GLOB_DAT", /* name */
512 false, /* partial_inplace */
514 0xffffffff, /* dst_mask */
515 false), /* pcrel_offset */
517 /* Marks a procedure linkage table entry for a symbol. */
518 HOWTO (R_PPC_JMP_SLOT
, /* type */
520 2, /* size (0 = byte, 1 = short, 2 = long) */
522 false, /* pc_relative */
524 complain_overflow_bitfield
, /* complain_on_overflow */
525 bfd_elf_generic_reloc
, /* special_function */
526 "R_PPC_JMP_SLOT", /* name */
527 false, /* partial_inplace */
530 false), /* pcrel_offset */
532 /* Used only by the dynamic linker. When the object is run, this
533 longword is set to the load address of the object, plus the
535 HOWTO (R_PPC_RELATIVE
, /* type */
537 2, /* size (0 = byte, 1 = short, 2 = long) */
539 false, /* pc_relative */
541 complain_overflow_bitfield
, /* complain_on_overflow */
542 bfd_elf_generic_reloc
, /* special_function */
543 "R_PPC_RELATIVE", /* name */
544 false, /* partial_inplace */
546 0xffffffff, /* dst_mask */
547 false), /* pcrel_offset */
549 /* Like R_PPC_REL24, but uses the value of the symbol within the
550 object rather than the final value. Normally used for
551 _GLOBAL_OFFSET_TABLE_. FIXME: Not supported. */
552 HOWTO (R_PPC_LOCAL24PC
, /* type */
554 2, /* size (0 = byte, 1 = short, 2 = long) */
556 true, /* pc_relative */
558 complain_overflow_signed
, /* complain_on_overflow */
559 bfd_elf_generic_reloc
, /* special_function */
560 "R_PPC_LOCAL24PC", /* name */
561 false, /* partial_inplace */
563 0x3fffffc, /* dst_mask */
564 true), /* pcrel_offset */
566 /* Like R_PPC_ADDR32, but may be unaligned. */
567 HOWTO (R_PPC_UADDR32
, /* type */
569 2, /* size (0 = byte, 1 = short, 2 = long) */
571 false, /* pc_relative */
573 complain_overflow_bitfield
, /* complain_on_overflow */
574 bfd_elf_generic_reloc
, /* special_function */
575 "R_PPC_UADDR32", /* name */
576 false, /* partial_inplace */
578 0xffffffff, /* dst_mask */
579 false), /* pcrel_offset */
581 /* Like R_PPC_ADDR16, but may be unaligned. */
582 HOWTO (R_PPC_UADDR16
, /* type */
584 1, /* size (0 = byte, 1 = short, 2 = long) */
586 false, /* pc_relative */
588 complain_overflow_bitfield
, /* complain_on_overflow */
589 bfd_elf_generic_reloc
, /* special_function */
590 "R_PPC_UADDR16", /* name */
591 false, /* partial_inplace */
593 0xffff, /* dst_mask */
594 false), /* pcrel_offset */
596 /* 32-bit PC relative */
597 HOWTO (R_PPC_REL32
, /* type */
599 2, /* size (0 = byte, 1 = short, 2 = long) */
601 true, /* pc_relative */
603 complain_overflow_bitfield
, /* complain_on_overflow */
604 bfd_elf_generic_reloc
, /* special_function */
605 "R_PPC_REL32", /* name */
606 false, /* partial_inplace */
608 0xffffffff, /* dst_mask */
609 true), /* pcrel_offset */
611 /* 32-bit relocation to the symbol's procedure linkage table.
612 FIXEME: not supported. */
613 HOWTO (R_PPC_PLT32
, /* type */
615 2, /* size (0 = byte, 1 = short, 2 = long) */
617 false, /* pc_relative */
619 complain_overflow_bitfield
, /* complain_on_overflow */
620 bfd_elf_generic_reloc
, /* special_function */
621 "R_PPC_PLT32", /* name */
622 false, /* partial_inplace */
625 false), /* pcrel_offset */
627 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
628 FIXEME: not supported. */
629 HOWTO (R_PPC_PLTREL32
, /* type */
631 2, /* size (0 = byte, 1 = short, 2 = long) */
633 true, /* pc_relative */
635 complain_overflow_bitfield
, /* complain_on_overflow */
636 bfd_elf_generic_reloc
, /* special_function */
637 "R_PPC_PLTREL32", /* name */
638 false, /* partial_inplace */
641 true), /* pcrel_offset */
643 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
645 HOWTO (R_PPC_PLT16_LO
, /* type */
647 1, /* size (0 = byte, 1 = short, 2 = long) */
649 false, /* pc_relative */
651 complain_overflow_bitfield
, /* complain_on_overflow */
652 bfd_elf_generic_reloc
, /* special_function */
653 "R_PPC_PLT16_LO", /* name */
654 false, /* partial_inplace */
656 0xffff, /* dst_mask */
657 false), /* pcrel_offset */
659 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
661 HOWTO (R_PPC_PLT16_HI
, /* type */
663 1, /* size (0 = byte, 1 = short, 2 = long) */
665 false, /* pc_relative */
667 complain_overflow_bitfield
, /* complain_on_overflow */
668 bfd_elf_generic_reloc
, /* special_function */
669 "R_PPC_PLT16_HI", /* name */
670 false, /* partial_inplace */
672 0xffff, /* dst_mask */
673 false), /* pcrel_offset */
675 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
676 the symbol. FIXME: Not supported. */
677 HOWTO (R_PPC_PLT16_HA
, /* type */
679 1, /* size (0 = byte, 1 = short, 2 = long) */
681 false, /* pc_relative */
683 complain_overflow_bitfield
, /* complain_on_overflow */
684 bfd_elf_generic_reloc
, /* special_function */
685 "R_PPC_PLT16_HA", /* name */
686 false, /* partial_inplace */
688 0xffff, /* dst_mask */
689 false), /* pcrel_offset */
691 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
693 HOWTO (R_PPC_SDAREL16
, /* type */
695 1, /* size (0 = byte, 1 = short, 2 = long) */
697 false, /* pc_relative */
699 complain_overflow_signed
, /* complain_on_overflow */
700 bfd_elf_generic_reloc
, /* special_function */
701 "R_PPC_SDAREL16", /* name */
702 false, /* partial_inplace */
704 0xffff, /* dst_mask */
705 false), /* pcrel_offset */
707 /* 32-bit section relative relocation. */
708 HOWTO (R_PPC_SECTOFF
, /* type */
710 2, /* size (0 = byte, 1 = short, 2 = long) */
712 true, /* pc_relative */
714 complain_overflow_bitfield
, /* complain_on_overflow */
715 bfd_elf_generic_reloc
, /* special_function */
716 "R_PPC_SECTOFF", /* name */
717 false, /* partial_inplace */
720 true), /* pcrel_offset */
722 /* 16-bit lower half section relative relocation. */
723 HOWTO (R_PPC_SECTOFF_LO
, /* type */
725 1, /* size (0 = byte, 1 = short, 2 = long) */
727 false, /* pc_relative */
729 complain_overflow_bitfield
, /* complain_on_overflow */
730 bfd_elf_generic_reloc
, /* special_function */
731 "R_PPC_SECTOFF_LO", /* name */
732 false, /* partial_inplace */
734 0xffff, /* dst_mask */
735 false), /* pcrel_offset */
737 /* 16-bit upper half section relative relocation. */
738 HOWTO (R_PPC_SECTOFF_HI
, /* type */
740 1, /* size (0 = byte, 1 = short, 2 = long) */
742 false, /* pc_relative */
744 complain_overflow_bitfield
, /* complain_on_overflow */
745 bfd_elf_generic_reloc
, /* special_function */
746 "R_PPC_SECTOFF_HI", /* name */
747 false, /* partial_inplace */
749 0xffff, /* dst_mask */
750 false), /* pcrel_offset */
752 /* 16-bit upper half adjusted section relative relocation. */
753 HOWTO (R_PPC_SECTOFF_HA
, /* type */
755 1, /* size (0 = byte, 1 = short, 2 = long) */
757 false, /* pc_relative */
759 complain_overflow_bitfield
, /* complain_on_overflow */
760 bfd_elf_generic_reloc
, /* special_function */
761 "R_PPC_SECTOFF_HA", /* name */
762 false, /* partial_inplace */
764 0xffff, /* dst_mask */
765 false), /* pcrel_offset */
767 /* The remaining relocs are from the Embedded ELF ABI, and are not
768 in the SVR4 ELF ABI. */
770 /* 32 bit value resulting from the addend minus the symbol */
771 HOWTO (R_PPC_EMB_NADDR32
, /* type */
773 2, /* size (0 = byte, 1 = short, 2 = long) */
775 false, /* pc_relative */
777 complain_overflow_bitfield
, /* complain_on_overflow */
778 bfd_elf_generic_reloc
, /* special_function */
779 "R_PPC_EMB_NADDR32", /* name */
780 false, /* partial_inplace */
782 0xffffffff, /* dst_mask */
783 false), /* pcrel_offset */
785 /* 16 bit value resulting from the addend minus the symbol */
786 HOWTO (R_PPC_EMB_NADDR16
, /* type */
788 1, /* size (0 = byte, 1 = short, 2 = long) */
790 false, /* pc_relative */
792 complain_overflow_bitfield
, /* complain_on_overflow */
793 bfd_elf_generic_reloc
, /* special_function */
794 "R_PPC_EMB_NADDR16", /* name */
795 false, /* partial_inplace */
797 0xffff, /* dst_mask */
798 false), /* pcrel_offset */
800 /* 16 bit value resulting from the addend minus the symbol */
801 HOWTO (R_PPC_EMB_NADDR16_LO
, /* type */
803 1, /* size (0 = byte, 1 = short, 2 = long) */
805 false, /* pc_relative */
807 complain_overflow_dont
,/* complain_on_overflow */
808 bfd_elf_generic_reloc
, /* special_function */
809 "R_PPC_EMB_ADDR16_LO", /* name */
810 false, /* partial_inplace */
812 0xffff, /* dst_mask */
813 false), /* pcrel_offset */
815 /* The high order 16 bits of the addend minus the symbol */
816 HOWTO (R_PPC_EMB_NADDR16_HI
, /* type */
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 false, /* pc_relative */
822 complain_overflow_dont
, /* complain_on_overflow */
823 bfd_elf_generic_reloc
, /* special_function */
824 "R_PPC_EMB_NADDR16_HI", /* name */
825 false, /* partial_inplace */
827 0xffff, /* dst_mask */
828 false), /* pcrel_offset */
830 /* The high order 16 bits of the result of the addend minus the address,
831 plus 1 if the contents of the low 16 bits, treated as a signed number,
833 HOWTO (R_PPC_EMB_NADDR16_HA
, /* type */
835 1, /* size (0 = byte, 1 = short, 2 = long) */
837 false, /* pc_relative */
839 complain_overflow_dont
, /* complain_on_overflow */
840 bfd_elf_generic_reloc
, /* special_function */
841 "R_PPC_EMB_NADDR16_HA", /* name */
842 false, /* partial_inplace */
844 0xffff, /* dst_mask */
845 false), /* pcrel_offset */
847 /* 16 bit value resulting from allocating a 4 byte word to hold an
848 address in the .sdata section, and returning the offset from
849 _SDA_BASE_ for that relocation */
850 HOWTO (R_PPC_EMB_SDAI16
, /* type */
852 1, /* size (0 = byte, 1 = short, 2 = long) */
854 false, /* pc_relative */
856 complain_overflow_bitfield
, /* complain_on_overflow */
857 bfd_elf_generic_reloc
, /* special_function */
858 "R_PPC_EMB_SDAI16", /* name */
859 false, /* partial_inplace */
861 0xffff, /* dst_mask */
862 false), /* pcrel_offset */
864 /* 16 bit value resulting from allocating a 4 byte word to hold an
865 address in the .sdata2 section, and returning the offset from
866 _SDA2_BASE_ for that relocation */
867 HOWTO (R_PPC_EMB_SDA2I16
, /* type */
869 1, /* size (0 = byte, 1 = short, 2 = long) */
871 false, /* pc_relative */
873 complain_overflow_bitfield
, /* complain_on_overflow */
874 bfd_elf_generic_reloc
, /* special_function */
875 "R_PPC_EMB_SDA2I16", /* name */
876 false, /* partial_inplace */
878 0xffff, /* dst_mask */
879 false), /* pcrel_offset */
881 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
883 HOWTO (R_PPC_EMB_SDA2REL
, /* type */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
887 false, /* pc_relative */
889 complain_overflow_signed
, /* complain_on_overflow */
890 bfd_elf_generic_reloc
, /* special_function */
891 "R_PPC_EMB_SDA2REL", /* name */
892 false, /* partial_inplace */
894 0xffff, /* dst_mask */
895 false), /* pcrel_offset */
897 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
898 signed offset from the appropriate base, and filling in the register
899 field with the appropriate register (0, 2, or 13). */
900 HOWTO (R_PPC_EMB_SDA21
, /* type */
902 2, /* size (0 = byte, 1 = short, 2 = long) */
904 false, /* pc_relative */
906 complain_overflow_signed
, /* complain_on_overflow */
907 bfd_elf_generic_reloc
, /* special_function */
908 "R_PPC_EMB_SDA21", /* name */
909 false, /* partial_inplace */
911 0xffff, /* dst_mask */
912 false), /* pcrel_offset */
914 /* Relocation not handled: R_PPC_EMB_MRKREF */
915 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
916 /* Relocation not handled: R_PPC_EMB_RELST_LO */
917 /* Relocation not handled: R_PPC_EMB_RELST_HI */
918 /* Relocation not handled: R_PPC_EMB_RELST_HA */
919 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
921 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
922 in the 16 bit signed offset from the appropriate base, and filling in the
923 register field with the appropriate register (0, 2, or 13). */
924 HOWTO (R_PPC_EMB_RELSDA
, /* type */
926 1, /* size (0 = byte, 1 = short, 2 = long) */
928 true, /* pc_relative */
930 complain_overflow_signed
, /* complain_on_overflow */
931 bfd_elf_generic_reloc
, /* special_function */
932 "R_PPC_EMB_RELSDA", /* name */
933 false, /* partial_inplace */
935 0xffff, /* dst_mask */
936 false), /* pcrel_offset */
938 /* Phony reloc to handle AIX style TOC entries */
939 HOWTO (R_PPC_TOC16
, /* type */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
943 false, /* pc_relative */
945 complain_overflow_signed
, /* complain_on_overflow */
946 bfd_elf_generic_reloc
, /* special_function */
947 "R_PPC_TOC16", /* name */
948 false, /* partial_inplace */
950 0xffff, /* dst_mask */
951 false), /* pcrel_offset */
955 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
958 ppc_elf_howto_init ()
960 unsigned int i
, type
;
962 for (i
= 0; i
< sizeof (ppc_elf_howto_raw
) / sizeof (ppc_elf_howto_raw
[0]); i
++)
964 type
= ppc_elf_howto_raw
[i
].type
;
965 BFD_ASSERT (type
< sizeof(ppc_elf_howto_table
) / sizeof(ppc_elf_howto_table
[0]));
966 ppc_elf_howto_table
[type
] = &ppc_elf_howto_raw
[i
];
971 static reloc_howto_type
*
972 ppc_elf_reloc_type_lookup (abfd
, code
)
974 bfd_reloc_code_real_type code
;
976 enum ppc_reloc_type ppc_reloc
= R_PPC_NONE
;
978 if (!ppc_elf_howto_table
[ R_PPC_ADDR32
]) /* Initialize howto table if needed */
979 ppc_elf_howto_init ();
984 return (reloc_howto_type
*)NULL
;
986 case BFD_RELOC_NONE
: ppc_reloc
= R_PPC_NONE
; break;
987 case BFD_RELOC_32
: ppc_reloc
= R_PPC_ADDR32
; break;
988 case BFD_RELOC_PPC_BA26
: ppc_reloc
= R_PPC_ADDR24
; break;
989 case BFD_RELOC_16
: ppc_reloc
= R_PPC_ADDR16
; break;
990 case BFD_RELOC_LO16
: ppc_reloc
= R_PPC_ADDR16_LO
; break;
991 case BFD_RELOC_HI16
: ppc_reloc
= R_PPC_ADDR16_HI
; break;
992 case BFD_RELOC_HI16_S
: ppc_reloc
= R_PPC_ADDR16_HA
; break;
993 case BFD_RELOC_PPC_BA16
: ppc_reloc
= R_PPC_ADDR14
; break;
994 case BFD_RELOC_PPC_BA16_BRTAKEN
: ppc_reloc
= R_PPC_ADDR14_BRTAKEN
; break;
995 case BFD_RELOC_PPC_BA16_BRNTAKEN
: ppc_reloc
= R_PPC_ADDR14_BRNTAKEN
; break;
996 case BFD_RELOC_PPC_B26
: ppc_reloc
= R_PPC_REL24
; break;
997 case BFD_RELOC_PPC_B16
: ppc_reloc
= R_PPC_REL14
; break;
998 case BFD_RELOC_PPC_B16_BRTAKEN
: ppc_reloc
= R_PPC_REL14_BRTAKEN
; break;
999 case BFD_RELOC_PPC_B16_BRNTAKEN
: ppc_reloc
= R_PPC_REL14_BRNTAKEN
; break;
1000 case BFD_RELOC_16_GOTOFF
: ppc_reloc
= R_PPC_GOT16
; break;
1001 case BFD_RELOC_LO16_GOTOFF
: ppc_reloc
= R_PPC_GOT16_LO
; break;
1002 case BFD_RELOC_HI16_GOTOFF
: ppc_reloc
= R_PPC_GOT16_HI
; break;
1003 case BFD_RELOC_HI16_S_GOTOFF
: ppc_reloc
= R_PPC_GOT16_HA
; break;
1004 case BFD_RELOC_24_PLT_PCREL
: ppc_reloc
= R_PPC_PLTREL24
; break;
1005 case BFD_RELOC_PPC_COPY
: ppc_reloc
= R_PPC_COPY
; break;
1006 case BFD_RELOC_PPC_GLOB_DAT
: ppc_reloc
= R_PPC_GLOB_DAT
; break;
1007 case BFD_RELOC_PPC_LOCAL24PC
: ppc_reloc
= R_PPC_LOCAL24PC
; break;
1008 case BFD_RELOC_32_PCREL
: ppc_reloc
= R_PPC_REL32
; break;
1009 case BFD_RELOC_32_PLTOFF
: ppc_reloc
= R_PPC_PLT32
; break;
1010 case BFD_RELOC_32_PLT_PCREL
: ppc_reloc
= R_PPC_PLTREL32
; break;
1011 case BFD_RELOC_LO16_PLTOFF
: ppc_reloc
= R_PPC_PLT16_LO
; break;
1012 case BFD_RELOC_HI16_PLTOFF
: ppc_reloc
= R_PPC_PLT16_HI
; break;
1013 case BFD_RELOC_HI16_S_PLTOFF
: ppc_reloc
= R_PPC_PLT16_HA
; break;
1014 case BFD_RELOC_GPREL16
: ppc_reloc
= R_PPC_SDAREL16
; break;
1015 case BFD_RELOC_32_BASEREL
: ppc_reloc
= R_PPC_SECTOFF
; break;
1016 case BFD_RELOC_LO16_BASEREL
: ppc_reloc
= R_PPC_SECTOFF_LO
; break;
1017 case BFD_RELOC_HI16_BASEREL
: ppc_reloc
= R_PPC_SECTOFF_HI
; break;
1018 case BFD_RELOC_HI16_S_BASEREL
: ppc_reloc
= R_PPC_SECTOFF_HA
; break;
1019 case BFD_RELOC_CTOR
: ppc_reloc
= R_PPC_ADDR32
; break;
1020 case BFD_RELOC_PPC_TOC16
: ppc_reloc
= R_PPC_TOC16
; break;
1021 case BFD_RELOC_PPC_EMB_NADDR32
: ppc_reloc
= R_PPC_EMB_NADDR32
; break;
1022 case BFD_RELOC_PPC_EMB_NADDR16
: ppc_reloc
= R_PPC_EMB_NADDR16
; break;
1023 case BFD_RELOC_PPC_EMB_NADDR16_LO
: ppc_reloc
= R_PPC_EMB_NADDR16_LO
; break;
1024 case BFD_RELOC_PPC_EMB_NADDR16_HI
: ppc_reloc
= R_PPC_EMB_NADDR16_HI
; break;
1025 case BFD_RELOC_PPC_EMB_NADDR16_HA
: ppc_reloc
= R_PPC_EMB_NADDR16_HA
; break;
1026 case BFD_RELOC_PPC_EMB_SDAI16
: ppc_reloc
= R_PPC_EMB_SDAI16
; break;
1027 case BFD_RELOC_PPC_EMB_SDA2I16
: ppc_reloc
= R_PPC_EMB_SDA2I16
; break;
1028 case BFD_RELOC_PPC_EMB_SDA2REL
: ppc_reloc
= R_PPC_EMB_SDA2REL
; break;
1029 case BFD_RELOC_PPC_EMB_SDA21
: ppc_reloc
= R_PPC_EMB_SDA21
; break;
1030 case BFD_RELOC_PPC_EMB_MRKREF
: ppc_reloc
= R_PPC_EMB_MRKREF
; break;
1031 case BFD_RELOC_PPC_EMB_RELSEC16
: ppc_reloc
= R_PPC_EMB_RELSEC16
; break;
1032 case BFD_RELOC_PPC_EMB_RELST_LO
: ppc_reloc
= R_PPC_EMB_RELST_LO
; break;
1033 case BFD_RELOC_PPC_EMB_RELST_HI
: ppc_reloc
= R_PPC_EMB_RELST_HI
; break;
1034 case BFD_RELOC_PPC_EMB_RELST_HA
: ppc_reloc
= R_PPC_EMB_RELST_HA
; break;
1035 case BFD_RELOC_PPC_EMB_BIT_FLD
: ppc_reloc
= R_PPC_EMB_BIT_FLD
; break;
1036 case BFD_RELOC_PPC_EMB_RELSDA
: ppc_reloc
= R_PPC_EMB_RELSDA
; break;
1039 return ppc_elf_howto_table
[ (int)ppc_reloc
];
1042 /* Set the howto pointer for a PowerPC ELF reloc. */
1045 ppc_elf_info_to_howto (abfd
, cache_ptr
, dst
)
1048 Elf32_Internal_Rela
*dst
;
1050 if (!ppc_elf_howto_table
[ R_PPC_ADDR32
]) /* Initialize howto table if needed */
1051 ppc_elf_howto_init ();
1053 BFD_ASSERT (ELF32_R_TYPE (dst
->r_info
) < (unsigned int) R_PPC_max
);
1054 cache_ptr
->howto
= ppc_elf_howto_table
[ELF32_R_TYPE (dst
->r_info
)];
1057 /* Handle the R_PPC_ADDR16_HA reloc. */
1059 static bfd_reloc_status_type
1060 ppc_elf_addr16_ha_reloc (abfd
, reloc_entry
, symbol
, data
, input_section
,
1061 output_bfd
, error_message
)
1063 arelent
*reloc_entry
;
1066 asection
*input_section
;
1068 char **error_message
;
1072 if (output_bfd
!= NULL
)
1074 reloc_entry
->address
+= input_section
->output_offset
;
1075 return bfd_reloc_ok
;
1078 if (reloc_entry
->address
> input_section
->_cooked_size
)
1079 return bfd_reloc_outofrange
;
1081 if (bfd_is_com_section (symbol
->section
))
1084 relocation
= symbol
->value
;
1086 relocation
+= symbol
->section
->output_section
->vma
;
1087 relocation
+= symbol
->section
->output_offset
;
1088 relocation
+= reloc_entry
->addend
;
1090 reloc_entry
->addend
+= (relocation
& 0x8000) << 1;
1092 return bfd_reloc_continue
;
1095 /* Function to set whether a module needs the -mrelocatable bit set. */
1098 ppc_elf_set_private_flags (abfd
, flags
)
1102 BFD_ASSERT (!elf_flags_init (abfd
)
1103 || elf_elfheader (abfd
)->e_flags
== flags
);
1105 elf_elfheader (abfd
)->e_flags
= flags
;
1106 elf_flags_init (abfd
) = true;
1110 /* Copy backend specific data from one object module to another */
1112 ppc_elf_copy_private_bfd_data (ibfd
, obfd
)
1116 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
1117 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
1120 BFD_ASSERT (!elf_flags_init (obfd
)
1121 || elf_elfheader (obfd
)->e_flags
== elf_elfheader (ibfd
)->e_flags
);
1123 elf_elfheader (obfd
)->e_flags
= elf_elfheader (ibfd
)->e_flags
;
1124 elf_flags_init (obfd
) = true;
1128 /* Merge backend specific data from an object file to the output
1129 object file when linking */
1131 ppc_elf_merge_private_bfd_data (ibfd
, obfd
)
1139 /* Check if we have the same endianess */
1140 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
1141 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
1143 (*_bfd_error_handler
)
1144 ("%s: compiled for a %s endian system and target is %s endian",
1145 bfd_get_filename (ibfd
),
1146 bfd_big_endian (ibfd
) ? "big" : "little",
1147 bfd_big_endian (obfd
) ? "big" : "little");
1149 bfd_set_error (bfd_error_wrong_format
);
1153 if (bfd_get_flavour (ibfd
) != bfd_target_elf_flavour
1154 || bfd_get_flavour (obfd
) != bfd_target_elf_flavour
)
1157 new_flags
= elf_elfheader (ibfd
)->e_flags
;
1158 old_flags
= elf_elfheader (obfd
)->e_flags
;
1159 if (!elf_flags_init (obfd
)) /* First call, no flags set */
1161 elf_flags_init (obfd
) = true;
1162 elf_elfheader (obfd
)->e_flags
= new_flags
;
1165 else if (new_flags
== old_flags
) /* Compatible flags are ok */
1168 else /* Incompatible flags */
1170 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
1173 if ((new_flags
& EF_PPC_RELOCATABLE
) != 0
1174 && (old_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0)
1177 (*_bfd_error_handler
)
1178 ("%s: compiled with -mrelocatable and linked with modules compiled normally",
1179 bfd_get_filename (ibfd
));
1181 else if ((new_flags
& (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
)) == 0
1182 && (old_flags
& EF_PPC_RELOCATABLE
) != 0)
1185 (*_bfd_error_handler
)
1186 ("%s: compiled normally and linked with modules compiled with -mrelocatable",
1187 bfd_get_filename (ibfd
));
1189 /* If -mrelocatable-lib is linked with an object without -mrelocatable-lib, turn off
1190 the -mrelocatable-lib, since at least one module isn't relocatable. */
1191 else if ((old_flags
& EF_PPC_RELOCATABLE_LIB
) != 0
1192 && (new_flags
& EF_PPC_RELOCATABLE_LIB
) == 0)
1193 elf_elfheader (obfd
)->e_flags
&= ~EF_PPC_RELOCATABLE_LIB
;
1196 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if any module uses it */
1197 elf_elfheader (obfd
)->e_flags
|= (new_flags
& EF_PPC_EMB
);
1199 new_flags
&= ~ (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
1200 old_flags
&= ~ (EF_PPC_RELOCATABLE
| EF_PPC_RELOCATABLE_LIB
| EF_PPC_EMB
);
1202 /* Warn about any other mismatches */
1203 if (new_flags
!= old_flags
)
1206 (*_bfd_error_handler
)
1207 ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)",
1208 bfd_get_filename (ibfd
), (long)new_flags
, (long)old_flags
);
1213 bfd_set_error (bfd_error_bad_value
);
1222 /* Handle a PowerPC specific section when reading an object file. This
1223 is called when elfcode.h finds a section with an unknown type. */
1226 ppc_elf_section_from_shdr (abfd
, hdr
, name
)
1228 Elf32_Internal_Shdr
*hdr
;
1234 if (! _bfd_elf_make_section_from_shdr (abfd
, hdr
, name
))
1237 newsect
= hdr
->bfd_section
;
1238 flags
= bfd_get_section_flags (abfd
, newsect
);
1239 if (hdr
->sh_flags
& SHF_EXCLUDE
)
1240 flags
|= SEC_EXCLUDE
;
1242 if (hdr
->sh_type
== SHT_ORDERED
)
1243 flags
|= SEC_SORT_ENTRIES
;
1245 bfd_set_section_flags (abfd
, newsect
, flags
);
1250 /* Set up any other section flags and such that may be necessary. */
1253 ppc_elf_fake_sections (abfd
, shdr
, asect
)
1255 Elf32_Internal_Shdr
*shdr
;
1258 if ((asect
->flags
& SEC_EXCLUDE
) != 0)
1259 shdr
->sh_flags
|= SHF_EXCLUDE
;
1261 if ((asect
->flags
& SEC_SORT_ENTRIES
) != 0)
1262 shdr
->sh_type
= SHT_ORDERED
;
1268 /* Create a special linker section */
1269 static elf_linker_section_t
*
1270 ppc_elf_create_linker_section (abfd
, info
, which
)
1272 struct bfd_link_info
*info
;
1273 enum elf_linker_section_enum which
;
1275 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
1276 elf_linker_section_t
*lsect
;
1278 /* Record the first bfd section that needs the special section */
1280 dynobj
= elf_hash_table (info
)->dynobj
= abfd
;
1282 /* If this is the first time, create the section */
1283 lsect
= elf_linker_section (dynobj
, which
);
1286 elf_linker_section_t defaults
;
1287 static elf_linker_section_t zero_section
;
1289 defaults
= zero_section
;
1290 defaults
.which
= which
;
1291 defaults
.hole_written_p
= false;
1292 defaults
.alignment
= 2;
1293 defaults
.flags
= SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
;
1298 (*_bfd_error_handler
) ("%s: Unknown special linker type %d",
1299 bfd_get_filename (abfd
),
1302 bfd_set_error (bfd_error_bad_value
);
1303 return (elf_linker_section_t
*)0;
1305 case LINKER_SECTION_GOT
: /* .got section */
1306 defaults
.name
= ".got";
1307 defaults
.rel_name
= ".rela.got";
1308 defaults
.sym_name
= "_GLOBAL_OFFSET_TABLE_";
1309 defaults
.max_hole_offset
= 32764;
1310 defaults
.hole_size
= 16;
1311 defaults
.sym_offset
= 4;
1314 case LINKER_SECTION_PLT
: /* .plt section */
1315 defaults
.name
= ".plt";
1316 defaults
.rel_name
= ".rela.plt";
1317 defaults
.sym_name
= (char *)0;
1318 defaults
.max_hole_offset
= 0;
1319 defaults
.hole_size
= 0;
1320 defaults
.sym_offset
= 0;
1321 defaults
.flags
&= ~SEC_LOAD
;
1324 case LINKER_SECTION_SDATA
: /* .sdata/.sbss section */
1325 defaults
.name
= ".sdata";
1326 defaults
.rel_name
= ".rela.sdata";
1327 defaults
.bss_name
= ".sbss";
1328 defaults
.sym_name
= "_SDA_BASE_";
1329 defaults
.sym_offset
= 32768;
1332 case LINKER_SECTION_SDATA2
: /* .sdata2/.sbss2 section */
1333 defaults
.name
= ".sdata2";
1334 defaults
.rel_name
= ".rela.sdata2";
1335 defaults
.bss_name
= ".sbss2";
1336 defaults
.sym_name
= "_SDA2_BASE_";
1337 defaults
.sym_offset
= 32768;
1338 defaults
.flags
|= SEC_READONLY
;
1342 lsect
= _bfd_elf_create_linker_section (abfd
, info
, which
, &defaults
);
1349 /* If we have a non-zero sized .sbss2 or .PPC.EMB.sbss0 sections, we need to bump up
1350 the number of section headers. */
1353 ppc_elf_additional_program_headers (abfd
)
1361 s
= bfd_get_section_by_name (abfd
, ".interp");
1365 s
= bfd_get_section_by_name (abfd
, ".sbss2");
1366 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0 && s
->_raw_size
> 0)
1369 s
= bfd_get_section_by_name (abfd
, ".PPC.EMB.sbss0");
1370 if (s
!= NULL
&& (s
->flags
& SEC_LOAD
) != 0 && s
->_raw_size
> 0)
1376 /* Modify the segment map if needed */
1379 ppc_elf_modify_segment_map (abfd
)
1385 /* Adjust a symbol defined by a dynamic object and referenced by a
1386 regular object. The current definition is in some section of the
1387 dynamic object, but we're not including those sections. We have to
1388 change the definition to something the rest of the link can
1392 ppc_elf_adjust_dynamic_symbol (info
, h
)
1393 struct bfd_link_info
*info
;
1394 struct elf_link_hash_entry
*h
;
1396 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
1398 unsigned int power_of_two
;
1402 fprintf (stderr
, "ppc_elf_adjust_dynamic_symbol called for %s\n", h
->root
.root
.string
);
1405 /* Make sure we know what is going on here. */
1406 BFD_ASSERT (dynobj
!= NULL
1407 && ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
)
1408 || h
->weakdef
!= NULL
1409 || ((h
->elf_link_hash_flags
1410 & ELF_LINK_HASH_DEF_DYNAMIC
) != 0
1411 && (h
->elf_link_hash_flags
1412 & ELF_LINK_HASH_REF_REGULAR
) != 0
1413 && (h
->elf_link_hash_flags
1414 & ELF_LINK_HASH_DEF_REGULAR
) == 0)));
1417 /* If this is a function, put it in the procedure linkage table. We
1418 will fill in the contents of the procedure linkage table later,
1419 when we know the address of the .got section. */
1420 if (h
->type
== STT_FUNC
1421 || (h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0)
1424 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_DYNAMIC
) == 0
1425 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_REF_DYNAMIC
) == 0)
1427 /* This case can occur if we saw a PLT32 reloc in an input
1428 file, but the symbol was never referred to by a dynamic
1429 object. In such a case, we don't actually need to build
1430 a procedure linkage table, and we can just do a PC32
1432 BFD_ASSERT ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_PLT
) != 0);
1436 /* Make sure this symbol is output as a dynamic symbol. */
1437 if (h
->dynindx
== -1)
1439 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
1443 s
= bfd_get_section_by_name (dynobj
, ".plt");
1444 BFD_ASSERT (s
!= NULL
);
1446 /* If this is the first .plt entry, make room for the special
1448 if (s
->_raw_size
== 0)
1449 s
->_raw_size
+= PLT_INITIAL_ENTRY_SIZE
;
1451 /* The PowerPC PLT is actually composed of two parts, the first part
1452 is 2 words (for a load and a jump), and then there is a remaining
1453 word available at the end. */
1454 plt_offset
= (PLT_INITIAL_ENTRY_SIZE
1455 + 8 * ((s
->_raw_size
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
));
1457 /* If this symbol is not defined in a regular file, and we are
1458 not generating a shared library, then set the symbol to this
1459 location in the .plt. This is required to make function
1460 pointers compare as equal between the normal executable and
1461 the shared library. */
1463 && (h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
1465 h
->root
.u
.def
.section
= s
;
1466 h
->root
.u
.def
.value
= plt_offset
;
1469 h
->plt_offset
= plt_offset
;
1471 /* Make room for this entry. */
1472 s
->_raw_size
+= PLT_ENTRY_SIZE
;
1475 /* We also need to make an entry in the .got.plt section, which
1476 will be placed in the .got section by the linker script. */
1478 s
= bfd_get_section_by_name (dynobj
, ".got.plt");
1479 BFD_ASSERT (s
!= NULL
);
1483 /* We also need to make an entry in the .rela.plt section. */
1485 s
= bfd_get_section_by_name (dynobj
, ".rela.plt");
1486 BFD_ASSERT (s
!= NULL
);
1487 s
->_raw_size
+= sizeof (Elf32_External_Rela
);
1492 /* If this is a weak symbol, and there is a real definition, the
1493 processor independent code will have arranged for us to see the
1494 real definition first, and we can just use the same value. */
1495 if (h
->weakdef
!= NULL
)
1497 BFD_ASSERT (h
->weakdef
->root
.type
== bfd_link_hash_defined
1498 || h
->weakdef
->root
.type
== bfd_link_hash_defweak
);
1499 h
->root
.u
.def
.section
= h
->weakdef
->root
.u
.def
.section
;
1500 h
->root
.u
.def
.value
= h
->weakdef
->root
.u
.def
.value
;
1504 /* This is a reference to a symbol defined by a dynamic object which
1505 is not a function. */
1507 /* If we are creating a shared library, we must presume that the
1508 only references to the symbol are via the global offset table.
1509 For such cases we need not do anything here; the relocations will
1510 be handled correctly by relocate_section. */
1514 /* We must allocate the symbol in our .dynbss section, which will
1515 become part of the .bss section of the executable. There will be
1516 an entry for this symbol in the .dynsym section. The dynamic
1517 object will contain position independent code, so all references
1518 from the dynamic object to this symbol will go through the global
1519 offset table. The dynamic linker will use the .dynsym entry to
1520 determine the address it must put in the global offset table, so
1521 both the dynamic object and the regular object will refer to the
1522 same memory location for the variable. */
1524 s
= bfd_get_section_by_name (dynobj
, ".dynbss");
1525 BFD_ASSERT (s
!= NULL
);
1527 /* If the symbol is currently defined in the .bss section of the
1528 dynamic object, then it is OK to simply initialize it to zero.
1529 If the symbol is in some other section, we must generate a
1530 R_PPC_COPY reloc to tell the dynamic linker to copy the initial
1531 value out of the dynamic object and into the runtime process
1532 image. We need to remember the offset into the .rela.bss section
1533 we are going to use. */
1534 if ((h
->root
.u
.def
.section
->flags
& SEC_LOAD
) != 0)
1538 srel
= bfd_get_section_by_name (dynobj
, ".rela.bss");
1539 BFD_ASSERT (srel
!= NULL
);
1540 srel
->_raw_size
+= sizeof (Elf32_External_Rel
);
1541 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_COPY
;
1544 /* We need to figure out the alignment required for this symbol. I
1545 have no idea how ELF linkers handle this. */
1546 power_of_two
= bfd_log2 (h
->size
);
1547 if (power_of_two
> 3)
1550 /* Apply the required alignment. */
1551 s
->_raw_size
= BFD_ALIGN (s
->_raw_size
,
1552 (bfd_size_type
) (1 << power_of_two
));
1553 if (power_of_two
> bfd_get_section_alignment (dynobj
, s
))
1555 if (! bfd_set_section_alignment (dynobj
, s
, power_of_two
))
1559 /* Define the symbol as being at this point in the section. */
1560 h
->root
.u
.def
.section
= s
;
1561 h
->root
.u
.def
.value
= s
->_raw_size
;
1563 /* Increment the section size to make room for the symbol. */
1564 s
->_raw_size
+= h
->size
;
1570 /* Increment the index of a dynamic symbol by a given amount. Called
1571 via elf_link_hash_traverse. */
1574 ppc_elf_adjust_dynindx (h
, cparg
)
1575 struct elf_link_hash_entry
*h
;
1578 int *cp
= (int *) cparg
;
1581 fprintf (stderr
, "ppc_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", h
->dynindx
, *cp
);
1584 if (h
->dynindx
!= -1)
1591 /* Set the sizes of the dynamic sections. */
1594 ppc_elf_size_dynamic_sections (output_bfd
, info
)
1596 struct bfd_link_info
*info
;
1605 fprintf (stderr
, "ppc_elf_size_dynamic_sections called\n");
1608 dynobj
= elf_hash_table (info
)->dynobj
;
1609 BFD_ASSERT (dynobj
!= NULL
);
1611 if (elf_hash_table (info
)->dynamic_sections_created
)
1613 /* Set the contents of the .interp section to the interpreter. */
1616 s
= bfd_get_section_by_name (dynobj
, ".interp");
1617 BFD_ASSERT (s
!= NULL
);
1618 s
->_raw_size
= sizeof ELF_DYNAMIC_INTERPRETER
;
1619 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
1624 /* We may have created entries in the .rela.got, .rela.sdata, and
1625 .rela.sdata2 sections. However, if we are not creating the
1626 dynamic sections, we will not actually use these entries. Reset
1627 the size of .rela.got, et al, which will cause it to get
1628 stripped from the output file below. */
1629 static char *rela_sections
[] = { ".rela.got", ".rela.sdata", ".rela.sdata", (char *)0 };
1632 for (p
= rela_sections
; *p
!= (char *)0; p
++)
1634 s
= bfd_get_section_by_name (dynobj
, *p
);
1640 /* The check_relocs and adjust_dynamic_symbol entry points have
1641 determined the sizes of the various dynamic sections. Allocate
1646 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
1651 if ((s
->flags
& SEC_IN_MEMORY
) == 0)
1654 /* It's OK to base decisions on the section name, because none
1655 of the dynobj section names depend upon the input files. */
1656 name
= bfd_get_section_name (dynobj
, s
);
1660 if (strcmp (name
, ".plt") == 0)
1662 if (s
->_raw_size
== 0)
1664 /* Strip this section if we don't need it; see the
1670 /* Remember whether there is a PLT. */
1674 else if (strncmp (name
, ".rela", 5) == 0)
1676 if (s
->_raw_size
== 0)
1678 /* If we don't need this section, strip it from the
1679 output file. This is mostly to handle .rela.bss and
1680 .rela.plt. We must create both sections in
1681 create_dynamic_sections, because they must be created
1682 before the linker maps input sections to output
1683 sections. The linker does that before
1684 adjust_dynamic_symbol is called, and it is that
1685 function which decides whether anything needs to go
1686 into these sections. */
1693 /* Remember whether there are any reloc sections other
1695 if (strcmp (name
, ".rela.plt") != 0)
1699 /* If this relocation section applies to a read only
1700 section, then we probably need a DT_TEXTREL
1701 entry. The entries in the .rel.plt section
1702 really apply to the .got section, which we
1703 created ourselves and so know is not readonly. */
1704 target
= bfd_get_section_by_name (output_bfd
, name
+ 4);
1706 && (target
->flags
& SEC_READONLY
) != 0)
1710 /* We use the reloc_count field as a counter if we need
1711 to copy relocs into the output file. */
1715 else if (strcmp (name
, ".got") != 0
1716 && strcmp (name
, ".sdata") != 0
1717 && strcmp (name
, ".sdata2") != 0)
1719 /* It's not one of our sections, so don't allocate space. */
1727 for (spp
= &s
->output_section
->owner
->sections
;
1728 *spp
!= s
->output_section
;
1729 spp
= &(*spp
)->next
)
1731 *spp
= s
->output_section
->next
;
1732 --s
->output_section
->owner
->section_count
;
1737 /* Allocate memory for the section contents. */
1738 s
->contents
= (bfd_byte
*) bfd_zalloc (dynobj
, s
->_raw_size
);
1739 if (s
->contents
== NULL
&& s
->_raw_size
!= 0)
1743 if (elf_hash_table (info
)->dynamic_sections_created
)
1745 /* Add some entries to the .dynamic section. We fill in the
1746 values later, in ppc_elf_finish_dynamic_sections, but we
1747 must add the entries now so that we get the correct size for
1748 the .dynamic section. The DT_DEBUG entry is filled in by the
1749 dynamic linker and used by the debugger. */
1752 if (! bfd_elf32_add_dynamic_entry (info
, DT_DEBUG
, 0))
1758 if (! bfd_elf32_add_dynamic_entry (info
, DT_PLTGOT
, 0)
1759 || ! bfd_elf32_add_dynamic_entry (info
, DT_PLTRELSZ
, 0)
1760 || ! bfd_elf32_add_dynamic_entry (info
, DT_PLTREL
, DT_REL
)
1761 || ! bfd_elf32_add_dynamic_entry (info
, DT_JMPREL
, 0))
1767 if (! bfd_elf32_add_dynamic_entry (info
, DT_RELA
, 0)
1768 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELASZ
, DT_RELA
)
1769 || ! bfd_elf32_add_dynamic_entry (info
, DT_RELENT
,
1770 sizeof (Elf32_External_Rela
)))
1776 if (! bfd_elf32_add_dynamic_entry (info
, DT_TEXTREL
, 0))
1781 /* If we are generating a shared library, we generate a section
1782 symbol for each output section. These are local symbols, which
1783 means that they must come first in the dynamic symbol table.
1784 That means we must increment the dynamic symbol index of every
1785 other dynamic symbol. */
1790 c
= bfd_count_sections (output_bfd
);
1791 elf_link_hash_traverse (elf_hash_table (info
),
1792 ppc_elf_adjust_dynindx
,
1794 elf_hash_table (info
)->dynsymcount
+= c
;
1796 for (i
= 1, s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
, i
++)
1798 elf_section_data (s
)->dynindx
= i
;
1799 /* These symbols will have no names, so we don't need to
1800 fiddle with dynstr_index. */
1808 /* Look through the relocs for a section during the first phase, and
1809 allocate space in the global offset table or procedure linkage
1813 ppc_elf_check_relocs (abfd
, info
, sec
, relocs
)
1815 struct bfd_link_info
*info
;
1817 const Elf_Internal_Rela
*relocs
;
1821 Elf_Internal_Shdr
*symtab_hdr
;
1822 struct elf_link_hash_entry
**sym_hashes
;
1823 const Elf_Internal_Rela
*rel
;
1824 const Elf_Internal_Rela
*rel_end
;
1825 bfd_vma
*local_got_offsets
;
1826 elf_linker_section_t
*got
;
1827 elf_linker_section_t
*plt
;
1828 elf_linker_section_t
*sdata
;
1829 elf_linker_section_t
*sdata2
;
1832 if (info
->relocateable
)
1836 fprintf (stderr
, "ppc_elf_check_relocs called for section %s in %s\n",
1837 bfd_get_section_name (abfd
, sec
),
1838 bfd_get_filename (abfd
));
1841 /* Create the linker generated sections all the time so that the special
1842 symbols are created. */
1843 if ((got
= elf_linker_section (abfd
, LINKER_SECTION_GOT
)) == NULL
)
1845 got
= ppc_elf_create_linker_section (abfd
, info
, LINKER_SECTION_GOT
);
1851 if ((plt
= elf_linker_section (abfd
, LINKER_SECTION_PLT
)) == NULL
)
1853 plt
= ppc_elf_create_linker_section (abfd
, info
, LINKER_SECTION_PLT
);
1859 if ((sdata
= elf_linker_section (abfd
, LINKER_SECTION_SDATA
)) == NULL
)
1861 sdata
= ppc_elf_create_linker_section (abfd
, info
, LINKER_SECTION_SDATA
);
1867 if ((sdata2
= elf_linker_section (abfd
, LINKER_SECTION_SDATA2
)) == NULL
)
1869 sdata2
= ppc_elf_create_linker_section (abfd
, info
, LINKER_SECTION_SDATA2
);
1874 dynobj
= elf_hash_table (info
)->dynobj
;
1875 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
1876 sym_hashes
= elf_sym_hashes (abfd
);
1877 local_got_offsets
= elf_local_got_offsets (abfd
);
1881 rel_end
= relocs
+ sec
->reloc_count
;
1882 for (rel
= relocs
; rel
< rel_end
; rel
++)
1884 unsigned long r_symndx
;
1885 struct elf_link_hash_entry
*h
;
1887 r_symndx
= ELF32_R_SYM (rel
->r_info
);
1888 if (r_symndx
< symtab_hdr
->sh_info
)
1891 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
1893 switch (ELF32_R_TYPE (rel
->r_info
))
1895 /* GOT16 relocations */
1897 case R_PPC_GOT16_LO
:
1898 case R_PPC_GOT16_HI
:
1899 case R_PPC_GOT16_HA
:
1900 if (got
->rel_section
== NULL
1901 && (h
!= NULL
|| info
->shared
)
1902 && !_bfd_elf_make_linker_section_rela (dynobj
, got
, 2))
1908 if (!bfd_elf32_create_pointer_linker_section (abfd
, info
, got
, h
, rel
))
1913 /* Indirect .sdata relocation */
1914 case R_PPC_EMB_SDAI16
:
1917 (*_bfd_error_handler
) ("%s: relocation %s cannot be used when making a shared object",
1918 bfd_get_filename (abfd
),
1919 "R_PPC_EMB_SDAI16");
1924 if (got
->rel_section
== NULL
1925 && (h
!= NULL
|| info
->shared
)
1926 && !_bfd_elf_make_linker_section_rela (dynobj
, got
, 2))
1932 if (!bfd_elf32_create_pointer_linker_section (abfd
, info
, sdata
, h
, rel
))
1937 /* Indirect .sdata2 relocation */
1938 case R_PPC_EMB_SDA2I16
:
1941 (*_bfd_error_handler
) ("%s: relocation %s cannot be used when making a shared object",
1942 bfd_get_filename (abfd
),
1943 "R_PPC_EMB_SDA2I16");
1948 if (got
->rel_section
== NULL
1949 && (h
!= NULL
|| info
->shared
)
1950 && !_bfd_elf_make_linker_section_rela (dynobj
, got
, 2))
1953 if (!bfd_elf32_create_pointer_linker_section (abfd
, info
, sdata2
, h
, rel
))
1958 case R_PPC_SDAREL16
:
1959 case R_PPC_EMB_SDA2REL
:
1960 case R_PPC_EMB_SDA21
:
1963 (*_bfd_error_handler
) ("%s: relocation %s cannot be used when making a shared object",
1964 bfd_get_filename (abfd
),
1965 ppc_elf_howto_table
[(int)ELF32_R_TYPE (rel
->r_info
)]->name
);
1971 case R_PPC_PLTREL24
:
1972 case R_PPC_PLT16_LO
:
1973 case R_PPC_PLT16_HI
:
1974 case R_PPC_PLT16_HA
:
1976 fprintf (stderr
, "Reloc requires a PLT entry\n");
1978 /* This symbol requires a procedure linkage table entry. We
1979 actually build the entry in adjust_dynamic_symbol,
1980 because this might be a case of linking PIC code without
1981 linking in any dynamic objects, in which case we don't
1982 need to generate a procedure linkage table after all. */
1986 /* It does not make sense to have a procedure linkage
1987 table entry for a local symbol. */
1988 bfd_set_error (bfd_error_bad_value
);
1993 /* Make sure this symbol is output as a dynamic symbol. */
1994 if (h
->dynindx
== -1)
1996 if (! bfd_elf32_link_record_dynamic_symbol (info
, h
))
2003 h
->elf_link_hash_flags
|= ELF_LINK_HASH_NEEDS_PLT
;
2006 /* the following relocations don't need to propigate the relocation if
2007 linking a shared object since they are section relative. */
2009 case R_PPC_SECTOFF_LO
:
2010 case R_PPC_SECTOFF_HI
:
2011 case R_PPC_SECTOFF_HA
:
2014 /* This refers only to functions defined in the shared library */
2015 case R_PPC_LOCAL24PC
:
2018 /* When creating a shared object, we must copy these
2019 relocs into the output file. We create a reloc
2020 section in dynobj and make room for the reloc. */
2023 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
2028 case R_PPC_REL14_BRTAKEN
:
2029 case R_PPC_REL14_BRNTAKEN
:
2036 && (sec
->flags
& SEC_ALLOC
) != 0)
2039 fprintf (stderr
, "ppc_elf_check_relocs need to create relocation for %s\n",
2040 (h
&& h
->root
.root
.string
) ? h
->root
.root
.string
: "<unknown>");
2046 name
= (bfd_elf_string_from_elf_section
2048 elf_elfheader (abfd
)->e_shstrndx
,
2049 elf_section_data (sec
)->rel_hdr
.sh_name
));
2056 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
2057 && strcmp (bfd_get_section_name (abfd
, sec
),
2060 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2063 sreloc
= bfd_make_section (dynobj
, name
);
2065 || ! bfd_set_section_flags (dynobj
, sreloc
,
2071 || ! bfd_set_section_alignment (dynobj
, sreloc
, 2))
2079 sreloc
->_raw_size
+= sizeof (Elf32_External_Rela
);
2090 /* Hook called by the linker routine which adds symbols from an object
2091 file. We use it to put .comm items in .sbss, and not .bss. */
2095 ppc_elf_add_symbol_hook (abfd
, info
, sym
, namep
, flagsp
, secp
, valp
)
2097 struct bfd_link_info
*info
;
2098 const Elf_Internal_Sym
*sym
;
2104 if (sym
->st_shndx
== SHN_COMMON
&& !info
->relocateable
&& sym
->st_size
<= bfd_get_gp_size (abfd
))
2106 /* Common symbols less than or equal to -G nn bytes are automatically
2108 elf_linker_section_t
*sdata
= ppc_elf_create_linker_section (abfd
, info
, LINKER_SECTION_SDATA
);
2109 if (!sdata
->bss_section
)
2111 /* We don't go through bfd_make_section, because we don't
2112 want to attach this common section to DYNOBJ. The linker
2113 will move the symbols to the appropriate output section
2114 when it defines common symbols. */
2115 sdata
->bss_section
= ((asection
*)
2116 bfd_zalloc (abfd
, sizeof (asection
)));
2117 if (sdata
->bss_section
== NULL
)
2119 sdata
->bss_section
->name
= sdata
->bss_name
;
2120 sdata
->bss_section
->flags
= SEC_IS_COMMON
;
2121 sdata
->bss_section
->output_section
= sdata
->bss_section
;
2122 sdata
->bss_section
->symbol
=
2123 (asymbol
*) bfd_zalloc (abfd
, sizeof (asymbol
));
2124 sdata
->bss_section
->symbol_ptr_ptr
=
2125 (asymbol
**) bfd_zalloc (abfd
, sizeof (asymbol
*));
2126 if (sdata
->bss_section
->symbol
== NULL
2127 || sdata
->bss_section
->symbol_ptr_ptr
== NULL
)
2129 sdata
->bss_section
->symbol
->name
= sdata
->bss_name
;
2130 sdata
->bss_section
->symbol
->flags
= BSF_SECTION_SYM
;
2131 sdata
->bss_section
->symbol
->section
= sdata
->bss_section
;
2132 *sdata
->bss_section
->symbol_ptr_ptr
= sdata
->bss_section
->symbol
;
2135 *secp
= sdata
->bss_section
;
2136 *valp
= sym
->st_size
;
2143 /* Finish up dynamic symbol handling. We set the contents of various
2144 dynamic sections here. */
2147 ppc_elf_finish_dynamic_symbol (output_bfd
, info
, h
, sym
)
2149 struct bfd_link_info
*info
;
2150 struct elf_link_hash_entry
*h
;
2151 Elf_Internal_Sym
*sym
;
2156 fprintf (stderr
, "ppc_elf_finish_dynamic_symbol called for %s", h
->root
.root
.string
);
2159 dynobj
= elf_hash_table (info
)->dynobj
;
2160 BFD_ASSERT (dynobj
!= NULL
);
2162 if (h
->plt_offset
!= (bfd_vma
) -1)
2166 Elf_Internal_Rela rela
;
2169 fprintf (stderr
, ", plt_offset = %d", h
->plt_offset
);
2172 /* This symbol has an entry in the procedure linkage table. Set
2175 BFD_ASSERT (h
->dynindx
!= -1);
2177 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2178 srela
= bfd_get_section_by_name (dynobj
, ".rela.plt");
2179 BFD_ASSERT (splt
!= NULL
&& srela
!= NULL
);
2181 /* We don't need to fill in the .plt. The solaris dynamic linker will
2184 /* Fill in the entry in the .rela.plt section. */
2185 rela
.r_offset
= (splt
->output_section
->vma
2186 + splt
->output_offset
2188 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_JMP_SLOT
);
2190 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
2191 ((Elf32_External_Rela
*) srela
->contents
2192 + ((h
->plt_offset
- PLT_INITIAL_ENTRY_SIZE
) / 8)));
2194 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_DEF_REGULAR
) == 0)
2196 /* Mark the symbol as undefined, rather than as defined in
2197 the .plt section. Leave the value alone. */
2198 sym
->st_shndx
= SHN_UNDEF
;
2202 if ((h
->elf_link_hash_flags
& ELF_LINK_HASH_NEEDS_COPY
) != 0)
2205 Elf_Internal_Rela rela
;
2207 /* This symbols needs a copy reloc. Set it up. */
2210 fprintf (stderr
, ", copy");
2213 BFD_ASSERT (h
->dynindx
!= -1);
2215 s
= bfd_get_section_by_name (h
->root
.u
.def
.section
->owner
,
2217 BFD_ASSERT (s
!= NULL
);
2219 rela
.r_offset
= (h
->root
.u
.def
.value
2220 + h
->root
.u
.def
.section
->output_section
->vma
2221 + h
->root
.u
.def
.section
->output_offset
);
2222 rela
.r_info
= ELF32_R_INFO (h
->dynindx
, R_PPC_COPY
);
2224 bfd_elf32_swap_reloca_out (output_bfd
, &rela
,
2225 ((Elf32_External_Rela
*) s
->contents
2231 fprintf (stderr
, "\n");
2234 /* Mark some specially defined symbols as absolute. */
2235 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0
2236 || strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0
2237 || strcmp (h
->root
.root
.string
, "_PROCEDURE_LINKAGE_TABLE_") == 0)
2238 sym
->st_shndx
= SHN_ABS
;
2244 /* Finish up the dynamic sections. */
2247 ppc_elf_finish_dynamic_sections (output_bfd
, info
)
2249 struct bfd_link_info
*info
;
2252 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
2253 elf_linker_section_t
*got
= elf_linker_section (dynobj
, LINKER_SECTION_GOT
);
2256 fprintf (stderr
, "ppc_elf_finish_dynamic_sections called\n");
2259 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
2261 if (elf_hash_table (info
)->dynamic_sections_created
)
2264 Elf32_External_Dyn
*dyncon
, *dynconend
;
2266 splt
= bfd_get_section_by_name (dynobj
, ".plt");
2267 BFD_ASSERT (splt
!= NULL
&& sdyn
!= NULL
);
2269 dyncon
= (Elf32_External_Dyn
*) sdyn
->contents
;
2270 dynconend
= (Elf32_External_Dyn
*) (sdyn
->contents
+ sdyn
->_raw_size
);
2271 for (; dyncon
< dynconend
; dyncon
++)
2273 Elf_Internal_Dyn dyn
;
2277 bfd_elf32_swap_dyn_in (dynobj
, dyncon
, &dyn
);
2281 case DT_PLTGOT
: name
= ".plt"; size
= false; break;
2282 case DT_PLTRELSZ
: name
= ".rela.plt"; size
= true; break;
2283 case DT_JMPREL
: name
= ".rela.plt"; size
= false; break;
2284 default: name
= NULL
; size
= false; break;
2291 s
= bfd_get_section_by_name (output_bfd
, name
);
2297 dyn
.d_un
.d_ptr
= s
->vma
;
2300 if (s
->_cooked_size
!= 0)
2301 dyn
.d_un
.d_val
= s
->_cooked_size
;
2303 dyn
.d_un
.d_val
= s
->_raw_size
;
2306 bfd_elf32_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
2311 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
2312 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
2315 unsigned char *contents
= got
->section
->contents
+ got
->hole_offset
;
2316 bfd_put_32 (output_bfd
, 0x4e800021 /* blrl */, contents
);
2319 bfd_put_32 (output_bfd
, (bfd_vma
) 0, contents
+4);
2321 bfd_put_32 (output_bfd
,
2322 sdyn
->output_section
->vma
+ sdyn
->output_offset
,
2325 elf_section_data (got
->section
->output_section
)->this_hdr
.sh_entsize
= 4;
2332 Elf_Internal_Sym sym
;
2334 /* Set up the section symbols for the output sections. */
2336 sdynsym
= bfd_get_section_by_name (dynobj
, ".dynsym");
2337 BFD_ASSERT (sdynsym
!= NULL
);
2341 sym
.st_info
= ELF_ST_INFO (STB_LOCAL
, STT_SECTION
);
2344 for (s
= output_bfd
->sections
; s
!= NULL
; s
= s
->next
)
2348 sym
.st_value
= s
->vma
;
2350 indx
= elf_section_data (s
)->this_idx
;
2351 BFD_ASSERT (indx
> 0);
2352 sym
.st_shndx
= indx
;
2354 bfd_elf32_swap_symbol_out (output_bfd
, &sym
,
2355 (PTR
) (((Elf32_External_Sym
*)
2357 + elf_section_data (s
)->dynindx
));
2360 /* Set the sh_info field of the output .dynsym section to the
2361 index of the first global symbol. */
2362 elf_section_data (sdynsym
->output_section
)->this_hdr
.sh_info
=
2363 bfd_count_sections (output_bfd
) + 1;
2370 /* The RELOCATE_SECTION function is called by the ELF backend linker
2371 to handle the relocations for a section.
2373 The relocs are always passed as Rela structures; if the section
2374 actually uses Rel structures, the r_addend field will always be
2377 This function is responsible for adjust the section contents as
2378 necessary, and (if using Rela relocs and generating a
2379 relocateable output file) adjusting the reloc addend as
2382 This function does not have to worry about setting the reloc
2383 address or the reloc symbol index.
2385 LOCAL_SYMS is a pointer to the swapped in local symbols.
2387 LOCAL_SECTIONS is an array giving the section in the input file
2388 corresponding to the st_shndx field of each local symbol.
2390 The global hash table entry for the global symbols can be found
2391 via elf_sym_hashes (input_bfd).
2393 When generating relocateable output, this function must handle
2394 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
2395 going to be the section symbol corresponding to the output
2396 section, which means that the addend must be adjusted
2400 ppc_elf_relocate_section (output_bfd
, info
, input_bfd
, input_section
,
2401 contents
, relocs
, local_syms
, local_sections
)
2403 struct bfd_link_info
*info
;
2405 asection
*input_section
;
2407 Elf_Internal_Rela
*relocs
;
2408 Elf_Internal_Sym
*local_syms
;
2409 asection
**local_sections
;
2411 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
2412 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (input_bfd
);
2413 bfd
*dynobj
= elf_hash_table (info
)->dynobj
;
2414 elf_linker_section_t
*got
= (dynobj
) ? elf_linker_section (dynobj
, LINKER_SECTION_GOT
) : NULL
;
2415 elf_linker_section_t
*sdata
= (dynobj
) ? elf_linker_section (dynobj
, LINKER_SECTION_SDATA
) : NULL
;
2416 elf_linker_section_t
*sdata2
= (dynobj
) ? elf_linker_section (dynobj
, LINKER_SECTION_SDATA2
) : NULL
;
2417 Elf_Internal_Rela
*rel
= relocs
;
2418 Elf_Internal_Rela
*relend
= relocs
+ input_section
->reloc_count
;
2419 asection
*sreloc
= NULL
;
2424 fprintf (stderr
, "ppc_elf_relocate_section called for %s section %s, %ld relocations%s\n",
2425 bfd_get_filename (input_bfd
),
2426 bfd_section_name(input_bfd
, input_section
),
2427 (long)input_section
->reloc_count
,
2428 (info
->relocateable
) ? " (relocatable)" : "");
2431 if (!ppc_elf_howto_table
[ R_PPC_ADDR32
]) /* Initialize howto table if needed */
2432 ppc_elf_howto_init ();
2434 for (; rel
< relend
; rel
++)
2436 enum ppc_reloc_type r_type
= (enum ppc_reloc_type
)ELF32_R_TYPE (rel
->r_info
);
2437 bfd_vma offset
= rel
->r_offset
;
2438 bfd_vma addend
= rel
->r_addend
;
2439 bfd_reloc_status_type r
= bfd_reloc_other
;
2440 Elf_Internal_Sym
*sym
= (Elf_Internal_Sym
*)0;
2441 asection
*sec
= (asection
*)0;
2442 struct elf_link_hash_entry
*h
= (struct elf_link_hash_entry
*)0;
2443 const char *sym_name
= (const char *)0;
2444 reloc_howto_type
*howto
;
2445 unsigned long r_symndx
;
2448 /* Unknown relocation handling */
2449 if ((unsigned)r_type
>= (unsigned)R_PPC_max
|| !ppc_elf_howto_table
[(int)r_type
])
2451 (*_bfd_error_handler
) ("%s: unknown relocation type %d",
2452 bfd_get_filename (input_bfd
),
2455 bfd_set_error (bfd_error_bad_value
);
2460 howto
= ppc_elf_howto_table
[(int)r_type
];
2461 r_symndx
= ELF32_R_SYM (rel
->r_info
);
2463 if (info
->relocateable
)
2465 /* This is a relocateable link. We don't have to change
2466 anything, unless the reloc is against a section symbol,
2467 in which case we have to adjust according to where the
2468 section symbol winds up in the output section. */
2469 if (r_symndx
< symtab_hdr
->sh_info
)
2471 sym
= local_syms
+ r_symndx
;
2472 if ((unsigned)ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
2474 sec
= local_sections
[r_symndx
];
2475 addend
= rel
->r_addend
+= sec
->output_offset
+ sym
->st_value
;
2480 fprintf (stderr
, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
2490 /* This is a final link. */
2491 if (r_symndx
< symtab_hdr
->sh_info
)
2493 sym
= local_syms
+ r_symndx
;
2494 sec
= local_sections
[r_symndx
];
2495 sym_name
= "<local symbol>";
2497 relocation
= (sec
->output_section
->vma
2498 + sec
->output_offset
2503 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
2504 while (h
->root
.type
== bfd_link_hash_indirect
2505 || h
->root
.type
== bfd_link_hash_warning
)
2506 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
2507 sym_name
= h
->root
.root
.string
;
2508 if (h
->root
.type
== bfd_link_hash_defined
2509 || h
->root
.type
== bfd_link_hash_defweak
)
2511 sec
= h
->root
.u
.def
.section
;
2512 if ((r_type
== R_PPC_PLT32
2513 && h
->plt_offset
!= (bfd_vma
) -1)
2514 || ((r_type
== R_PPC_GOT16
2515 || r_type
== R_PPC_GOT16_LO
2516 || r_type
== R_PPC_GOT16_HI
2517 || r_type
== R_PPC_GOT16_HA
)
2518 && elf_hash_table (info
)->dynamic_sections_created
2521 || (h
->elf_link_hash_flags
2522 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
2524 && (! info
->symbolic
2525 || (h
->elf_link_hash_flags
2526 & ELF_LINK_HASH_DEF_REGULAR
) == 0)
2527 && (input_section
->flags
& SEC_ALLOC
) != 0
2528 && (r_type
== R_PPC_ADDR32
2529 || r_type
== R_PPC_ADDR24
2530 || r_type
== R_PPC_ADDR16
2531 || r_type
== R_PPC_ADDR16_LO
2532 || r_type
== R_PPC_ADDR16_HI
2533 || r_type
== R_PPC_ADDR16_HA
2534 || r_type
== R_PPC_ADDR14
2535 || r_type
== R_PPC_ADDR14_BRTAKEN
2536 || r_type
== R_PPC_ADDR14_BRNTAKEN
2537 || r_type
== R_PPC_PLTREL24
2538 || r_type
== R_PPC_COPY
2539 || r_type
== R_PPC_GLOB_DAT
2540 || r_type
== R_PPC_JMP_SLOT
2541 || r_type
== R_PPC_UADDR32
2542 || r_type
== R_PPC_UADDR16
2543 || r_type
== R_PPC_REL32
2544 || r_type
== R_PPC_SDAREL16
2545 || r_type
== R_PPC_EMB_NADDR32
2546 || r_type
== R_PPC_EMB_NADDR16
2547 || r_type
== R_PPC_EMB_NADDR16_LO
2548 || r_type
== R_PPC_EMB_NADDR16_HI
2549 || r_type
== R_PPC_EMB_NADDR16_HA
2550 || r_type
== R_PPC_EMB_SDAI16
2551 || r_type
== R_PPC_EMB_SDA2I16
2552 || r_type
== R_PPC_EMB_SDA2REL
2553 || r_type
== R_PPC_EMB_SDA21
2554 || r_type
== R_PPC_EMB_MRKREF
2555 || r_type
== R_PPC_EMB_BIT_FLD
2556 || r_type
== R_PPC_EMB_RELSDA
2557 || ((r_type
== R_PPC_REL24
2558 || r_type
== R_PPC_REL14
2559 || r_type
== R_PPC_REL14_BRTAKEN
2560 || r_type
== R_PPC_REL14_BRNTAKEN
2561 || r_type
== R_PPC_RELATIVE
)
2562 && strcmp (h
->root
.root
.string
,
2563 "_GLOBAL_OFFSET_TABLE_") != 0))))
2565 /* In these cases, we don't need the relocation
2566 value. We check specially because in some
2567 obscure cases sec->output_section will be NULL. */
2571 relocation
= (h
->root
.u
.def
.value
2572 + sec
->output_section
->vma
2573 + sec
->output_offset
);
2575 else if (h
->root
.type
== bfd_link_hash_undefweak
)
2577 else if (info
->shared
)
2581 (*info
->callbacks
->undefined_symbol
)(info
,
2582 h
->root
.root
.string
,
2591 switch ((int)r_type
)
2594 (*_bfd_error_handler
) ("%s: unknown relocation type %d for symbol %s",
2595 bfd_get_filename (input_bfd
),
2596 (int)r_type
, sym_name
);
2598 bfd_set_error (bfd_error_bad_value
);
2602 /* relocations that need no special processing */
2603 case (int)R_PPC_LOCAL24PC
:
2606 case (int)R_PPC_REL24
:
2607 case (int)R_PPC_REL14
:
2609 && strcmp (h
->root
.root
.string
, "_GLOBAL_OFFSET_TABLE_") == 0)
2613 /* Relocations that need to be propigated if this is a shared object */
2614 case (int)R_PPC_NONE
:
2615 case (int)R_PPC_ADDR32
:
2616 case (int)R_PPC_ADDR24
:
2617 case (int)R_PPC_ADDR16
:
2618 case (int)R_PPC_ADDR16_LO
:
2619 case (int)R_PPC_ADDR16_HI
:
2620 case (int)R_PPC_ADDR14
:
2621 case (int)R_PPC_UADDR32
:
2622 case (int)R_PPC_UADDR16
:
2623 case (int)R_PPC_REL32
:
2624 case (int)R_PPC_PLTREL24
:
2626 && (input_section
->flags
& SEC_ALLOC
) != 0)
2628 Elf_Internal_Rela outrel
;
2631 fprintf (stderr
, "ppc_elf_relocate_section need to create relocation for %s\n",
2632 (h
&& h
->root
.root
.string
) ? h
->root
.root
.string
: "<unknown>");
2635 /* When generating a shared object, these relocations
2636 are copied into the output file to be resolved at run
2643 name
= (bfd_elf_string_from_elf_section
2645 elf_elfheader (input_bfd
)->e_shstrndx
,
2646 elf_section_data (input_section
)->rel_hdr
.sh_name
));
2650 BFD_ASSERT (strncmp (name
, ".rela", 5) == 0
2651 && strcmp (bfd_get_section_name (input_bfd
,
2655 sreloc
= bfd_get_section_by_name (dynobj
, name
);
2656 BFD_ASSERT (sreloc
!= NULL
);
2659 outrel
.r_offset
= (rel
->r_offset
2660 + input_section
->output_section
->vma
2661 + input_section
->output_offset
);
2663 && (! info
->symbolic
2664 || (h
->elf_link_hash_flags
2665 & ELF_LINK_HASH_DEF_REGULAR
) == 0))
2667 BFD_ASSERT (h
->dynindx
!= -1);
2668 outrel
.r_info
= ELF32_R_INFO (h
->dynindx
, r_type
);
2669 outrel
.r_addend
= rel
->r_addend
;
2673 if (r_type
== R_PPC_ADDR32
)
2675 outrel
.r_info
= ELF32_R_INFO (0, R_PPC_RELATIVE
);
2676 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2683 sec
= local_sections
[r_symndx
];
2686 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
2688 == bfd_link_hash_defweak
));
2689 sec
= h
->root
.u
.def
.section
;
2691 if (sec
!= NULL
&& bfd_is_abs_section (sec
))
2693 else if (sec
== NULL
|| sec
->owner
== NULL
)
2695 bfd_set_error (bfd_error_bad_value
);
2702 osec
= sec
->output_section
;
2703 indx
= elf_section_data (osec
)->dynindx
;
2708 outrel
.r_info
= ELF32_R_INFO (indx
, r_type
);
2709 outrel
.r_addend
= relocation
+ rel
->r_addend
;
2713 bfd_elf32_swap_reloca_out (output_bfd
, &outrel
,
2714 (((Elf32_External_Rela
*)
2716 + sreloc
->reloc_count
));
2717 ++sreloc
->reloc_count
;
2719 /* This reloc will be computed at runtime, so there's no
2720 need to do anything now. */
2725 /* branch taken prediction relocations */
2726 case (int)R_PPC_ADDR14_BRTAKEN
:
2727 case (int)R_PPC_REL14_BRTAKEN
:
2728 insn
= bfd_get_32 (output_bfd
, contents
+ offset
);
2729 if ((relocation
- offset
) & 0x8000)
2730 insn
&= ~BRANCH_PREDICT_BIT
;
2732 insn
|= BRANCH_PREDICT_BIT
;
2733 bfd_put_32 (output_bfd
, insn
, contents
+ offset
);
2736 /* branch not taken predicition relocations */
2737 case (int)R_PPC_ADDR14_BRNTAKEN
:
2738 case (int)R_PPC_REL14_BRNTAKEN
:
2739 insn
= bfd_get_32 (output_bfd
, contents
+ offset
);
2740 if ((relocation
- offset
) & 0x8000)
2741 insn
|= BRANCH_PREDICT_BIT
;
2743 insn
&= ~BRANCH_PREDICT_BIT
;
2744 bfd_put_32 (output_bfd
, insn
, contents
+ offset
);
2747 /* GOT16 relocations */
2748 case (int)R_PPC_GOT16
:
2749 case (int)R_PPC_GOT16_LO
:
2750 case (int)R_PPC_GOT16_HI
:
2751 case (int)R_PPC_GOT16_HA
:
2752 relocation
= bfd_elf32_finish_pointer_linker_section (output_bfd
, input_bfd
, info
,
2753 got
, h
, relocation
, rel
,
2757 /* Indirect .sdata relocation */
2758 case (int)R_PPC_EMB_SDAI16
:
2759 BFD_ASSERT (sdata
!= NULL
);
2760 relocation
= bfd_elf32_finish_pointer_linker_section (output_bfd
, input_bfd
, info
,
2761 sdata
, h
, relocation
, rel
,
2765 /* Indirect .sdata2 relocation */
2766 case (int)R_PPC_EMB_SDA2I16
:
2767 BFD_ASSERT (sdata2
!= NULL
);
2768 relocation
= bfd_elf32_finish_pointer_linker_section (output_bfd
, input_bfd
, info
,
2769 sdata2
, h
, relocation
, rel
,
2773 /* Handle the TOC16 reloc. We want to use the offset within the .got
2774 section, not the actual VMA. This is appropriate when generating
2775 an embedded ELF object, for which the .got section acts like the
2776 AIX .toc section. */
2777 case (int)R_PPC_TOC16
: /* phony GOT16 relocations */
2778 BFD_ASSERT (sec
!= (asection
*)0);
2779 BFD_ASSERT (bfd_is_und_section (sec
)
2780 || strcmp (bfd_get_section_name (abfd
, sec
), ".got") == 0
2781 || strcmp (bfd_get_section_name (abfd
, sec
), ".cgot") == 0)
2783 addend
-= sec
->output_section
->vma
+ sec
->output_offset
+ 0x8000;
2786 /* arithmetic adjust relocations */
2787 case (int)R_PPC_ADDR16_HA
:
2788 BFD_ASSERT (sec
!= (asection
*)0);
2789 addend
+= ((relocation
+ addend
) & 0x8000) << 1;
2792 /* relocate against _SDA_BASE_ */
2793 case (int)R_PPC_SDAREL16
:
2794 BFD_ASSERT (sec
!= (asection
*)0);
2795 if (strcmp (bfd_get_section_name (abfd
, sec
), ".sdata") != 0
2796 && strcmp (bfd_get_section_name (abfd
, sec
), ".sbss") != 0)
2798 (*_bfd_error_handler
) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
2799 bfd_get_filename (input_bfd
),
2801 ppc_elf_howto_table
[ (int)r_type
]->name
,
2802 bfd_get_section_name (abfd
, sec
));
2804 bfd_set_error (bfd_error_bad_value
);
2808 addend
-= (sdata
->sym_hash
->root
.u
.def
.value
2809 + sdata
->sym_hash
->root
.u
.def
.section
->output_section
->vma
2810 + sdata
->sym_hash
->root
.u
.def
.section
->output_offset
);
2814 /* relocate against _SDA2_BASE_ */
2815 case (int)R_PPC_EMB_SDA2REL
:
2816 BFD_ASSERT (sec
!= (asection
*)0);
2817 if (strcmp (bfd_get_section_name (abfd
, sec
), ".sdata2") != 0
2818 && strcmp (bfd_get_section_name (abfd
, sec
), ".sbss2") != 0)
2820 (*_bfd_error_handler
) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
2821 bfd_get_filename (input_bfd
),
2823 ppc_elf_howto_table
[ (int)r_type
]->name
,
2824 bfd_get_section_name (abfd
, sec
));
2826 bfd_set_error (bfd_error_bad_value
);
2830 addend
-= (sdata2
->sym_hash
->root
.u
.def
.value
2831 + sdata2
->sym_hash
->root
.u
.def
.section
->output_section
->vma
2832 + sdata2
->sym_hash
->root
.u
.def
.section
->output_offset
);
2836 /* relocate against either _SDA_BASE_, _SDA2_BASE_, or 0 */
2837 case (int)R_PPC_EMB_SDA21
:
2838 case (int)R_PPC_EMB_RELSDA
:
2840 const char *name
= bfd_get_section_name (abfd
, sec
);
2843 BFD_ASSERT (sec
!= (asection
*)0);
2844 if (strcmp (name
, ".sdata") == 0 || strcmp (name
, ".sbss") == 0)
2847 addend
-= (sdata
->sym_hash
->root
.u
.def
.value
2848 + sdata
->sym_hash
->root
.u
.def
.section
->output_section
->vma
2849 + sdata
->sym_hash
->root
.u
.def
.section
->output_offset
);
2852 else if (strcmp (name
, ".sdata2") == 0 || strcmp (name
, ".sbss2") == 0)
2855 addend
-= (sdata2
->sym_hash
->root
.u
.def
.value
2856 + sdata2
->sym_hash
->root
.u
.def
.section
->output_section
->vma
2857 + sdata2
->sym_hash
->root
.u
.def
.section
->output_offset
);
2860 else if (strcmp (name
, ".PPC.EMB.sdata0") == 0 || strcmp (name
, ".PPC.EMB.sbss0") == 0)
2867 (*_bfd_error_handler
) ("%s: The target (%s) of a %s relocation is in the wrong section (%s)",
2868 bfd_get_filename (input_bfd
),
2870 ppc_elf_howto_table
[ (int)r_type
]->name
,
2871 bfd_get_section_name (abfd
, sec
));
2873 bfd_set_error (bfd_error_bad_value
);
2878 if (r_type
== R_PPC_EMB_SDA21
)
2879 { /* fill in register field */
2880 insn
= bfd_get_32 (output_bfd
, contents
+ offset
);
2881 insn
= (insn
& ~RA_REGISTER_MASK
) | (reg
<< RA_REGISTER_SHIFT
);
2882 bfd_put_32 (output_bfd
, insn
, contents
+ offset
);
2887 /* Relocate against the beginning of the section */
2888 case (int)R_PPC_SECTOFF
:
2889 case (int)R_PPC_SECTOFF_LO
:
2890 case (int)R_PPC_SECTOFF_HI
:
2891 BFD_ASSERT (sec
!= (asection
*)0);
2892 addend
-= sec
->output_section
->vma
;
2895 case (int)R_PPC_SECTOFF_HA
:
2896 BFD_ASSERT (sec
!= (asection
*)0);
2897 addend
-= sec
->output_section
->vma
;
2898 addend
+= ((relocation
+ addend
) & 0x8000) << 1;
2901 /* Negative relocations */
2902 case (int)R_PPC_EMB_NADDR32
:
2903 case (int)R_PPC_EMB_NADDR16
:
2904 case (int)R_PPC_EMB_NADDR16_LO
:
2905 case (int)R_PPC_EMB_NADDR16_HI
:
2906 addend
-= 2*relocation
;
2909 case (int)R_PPC_EMB_NADDR16_HA
:
2910 addend
-= 2*relocation
;
2911 addend
+= ((relocation
+ addend
) & 0x8000) << 1;
2914 /* NOP relocation that prevents garbage collecting linkers from omitting a
2916 case (int)R_PPC_EMB_MRKREF
:
2919 case (int)R_PPC_COPY
:
2920 case (int)R_PPC_GLOB_DAT
:
2921 case (int)R_PPC_JMP_SLOT
:
2922 case (int)R_PPC_RELATIVE
:
2923 case (int)R_PPC_PLT32
:
2924 case (int)R_PPC_PLTREL32
:
2925 case (int)R_PPC_PLT16_LO
:
2926 case (int)R_PPC_PLT16_HI
:
2927 case (int)R_PPC_PLT16_HA
:
2928 case (int)R_PPC_EMB_RELSEC16
:
2929 case (int)R_PPC_EMB_RELST_LO
:
2930 case (int)R_PPC_EMB_RELST_HI
:
2931 case (int)R_PPC_EMB_RELST_HA
:
2932 case (int)R_PPC_EMB_BIT_FLD
:
2933 (*_bfd_error_handler
) ("%s: Relocation %s is not yet supported for symbol %s.",
2934 bfd_get_filename (input_bfd
),
2935 ppc_elf_howto_table
[ (int)r_type
]->name
,
2938 bfd_set_error (bfd_error_invalid_operation
);
2945 fprintf (stderr
, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n",
2954 r
= _bfd_final_link_relocate (howto
,
2962 if (r
!= bfd_reloc_ok
)
2970 case bfd_reloc_overflow
:
2975 name
= h
->root
.root
.string
;
2978 name
= bfd_elf_string_from_elf_section (input_bfd
,
2979 symtab_hdr
->sh_link
,
2985 name
= bfd_section_name (input_bfd
, sec
);
2988 (*info
->callbacks
->reloc_overflow
)(info
,
3004 fprintf (stderr
, "\n");
3011 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
3012 #define TARGET_LITTLE_NAME "elf32-powerpcle"
3013 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
3014 #define TARGET_BIG_NAME "elf32-powerpc"
3015 #define ELF_ARCH bfd_arch_powerpc
3016 #define ELF_MACHINE_CODE EM_PPC
3017 #define ELF_MAXPAGESIZE 0x10000
3018 #define elf_info_to_howto ppc_elf_info_to_howto
3020 #ifdef EM_CYGNUS_POWERPC
3021 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
3025 #define ELF_MACHINE_ALT2 EM_PPC_OLD
3028 #define bfd_elf32_bfd_copy_private_bfd_data ppc_elf_copy_private_bfd_data
3029 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
3030 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
3031 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
3032 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
3033 #define elf_backend_relocate_section ppc_elf_relocate_section
3034 #define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
3035 #define elf_backend_check_relocs ppc_elf_check_relocs
3036 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
3037 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
3038 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
3039 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
3040 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
3041 #define elf_backend_fake_sections ppc_elf_fake_sections
3042 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
3043 #define elf_backend_modify_segment_map ppc_elf_modify_segment_map
3045 #include "elf32-target.h"