1 /* PowerPC-specific support for 32-bit ELF
2 Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
3 2004, 2005 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
72 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
74 static reloc_howto_type ppc_elf_howto_raw[] = {
75 /* This reloc does nothing. */
76 HOWTO (R_PPC_NONE, /* type */
78 2, /* size (0 = byte, 1 = short, 2 = long) */
80 FALSE, /* pc_relative */
82 complain_overflow_bitfield, /* complain_on_overflow */
83 bfd_elf_generic_reloc, /* special_function */
84 "R_PPC_NONE", /* name */
85 FALSE, /* partial_inplace */
88 FALSE), /* pcrel_offset */
90 /* A standard 32 bit relocation. */
91 HOWTO (R_PPC_ADDR32, /* type */
93 2, /* size (0 = byte, 1 = short, 2 = long) */
95 FALSE, /* pc_relative */
97 complain_overflow_bitfield, /* complain_on_overflow */
98 bfd_elf_generic_reloc, /* special_function */
99 "R_PPC_ADDR32", /* name */
100 FALSE, /* partial_inplace */
102 0xffffffff, /* dst_mask */
103 FALSE), /* pcrel_offset */
105 /* An absolute 26 bit branch; the lower two bits must be zero.
106 FIXME: we don't check that, we just clear them. */
107 HOWTO (R_PPC_ADDR24, /* type */
109 2, /* size (0 = byte, 1 = short, 2 = long) */
111 FALSE, /* pc_relative */
113 complain_overflow_bitfield, /* complain_on_overflow */
114 bfd_elf_generic_reloc, /* special_function */
115 "R_PPC_ADDR24", /* name */
116 FALSE, /* partial_inplace */
118 0x3fffffc, /* dst_mask */
119 FALSE), /* pcrel_offset */
121 /* A standard 16 bit relocation. */
122 HOWTO (R_PPC_ADDR16, /* type */
124 1, /* size (0 = byte, 1 = short, 2 = long) */
126 FALSE, /* pc_relative */
128 complain_overflow_bitfield, /* complain_on_overflow */
129 bfd_elf_generic_reloc, /* special_function */
130 "R_PPC_ADDR16", /* name */
131 FALSE, /* partial_inplace */
133 0xffff, /* dst_mask */
134 FALSE), /* pcrel_offset */
136 /* A 16 bit relocation without overflow. */
137 HOWTO (R_PPC_ADDR16_LO, /* type */
139 1, /* size (0 = byte, 1 = short, 2 = long) */
141 FALSE, /* pc_relative */
143 complain_overflow_dont,/* complain_on_overflow */
144 bfd_elf_generic_reloc, /* special_function */
145 "R_PPC_ADDR16_LO", /* name */
146 FALSE, /* partial_inplace */
148 0xffff, /* dst_mask */
149 FALSE), /* pcrel_offset */
151 /* The high order 16 bits of an address. */
152 HOWTO (R_PPC_ADDR16_HI, /* type */
154 1, /* size (0 = byte, 1 = short, 2 = long) */
156 FALSE, /* pc_relative */
158 complain_overflow_dont, /* complain_on_overflow */
159 bfd_elf_generic_reloc, /* special_function */
160 "R_PPC_ADDR16_HI", /* name */
161 FALSE, /* partial_inplace */
163 0xffff, /* dst_mask */
164 FALSE), /* pcrel_offset */
166 /* The high order 16 bits of an address, plus 1 if the contents of
167 the low 16 bits, treated as a signed number, is negative. */
168 HOWTO (R_PPC_ADDR16_HA, /* type */
170 1, /* size (0 = byte, 1 = short, 2 = long) */
172 FALSE, /* pc_relative */
174 complain_overflow_dont, /* complain_on_overflow */
175 ppc_elf_addr16_ha_reloc, /* special_function */
176 "R_PPC_ADDR16_HA", /* name */
177 FALSE, /* partial_inplace */
179 0xffff, /* dst_mask */
180 FALSE), /* pcrel_offset */
182 /* An absolute 16 bit branch; the lower two bits must be zero.
183 FIXME: we don't check that, we just clear them. */
184 HOWTO (R_PPC_ADDR14, /* type */
186 2, /* size (0 = byte, 1 = short, 2 = long) */
188 FALSE, /* pc_relative */
190 complain_overflow_bitfield, /* complain_on_overflow */
191 bfd_elf_generic_reloc, /* special_function */
192 "R_PPC_ADDR14", /* name */
193 FALSE, /* partial_inplace */
195 0xfffc, /* dst_mask */
196 FALSE), /* pcrel_offset */
198 /* An absolute 16 bit branch, for which bit 10 should be set to
199 indicate that the branch is expected to be taken. The lower two
200 bits must be zero. */
201 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
203 2, /* size (0 = byte, 1 = short, 2 = long) */
205 FALSE, /* pc_relative */
207 complain_overflow_bitfield, /* complain_on_overflow */
208 bfd_elf_generic_reloc, /* special_function */
209 "R_PPC_ADDR14_BRTAKEN",/* name */
210 FALSE, /* partial_inplace */
212 0xfffc, /* dst_mask */
213 FALSE), /* pcrel_offset */
215 /* An absolute 16 bit branch, for which bit 10 should be set to
216 indicate that the branch is not expected to be taken. The lower
217 two bits must be zero. */
218 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
220 2, /* size (0 = byte, 1 = short, 2 = long) */
222 FALSE, /* pc_relative */
224 complain_overflow_bitfield, /* complain_on_overflow */
225 bfd_elf_generic_reloc, /* special_function */
226 "R_PPC_ADDR14_BRNTAKEN",/* name */
227 FALSE, /* partial_inplace */
229 0xfffc, /* dst_mask */
230 FALSE), /* pcrel_offset */
232 /* A relative 26 bit branch; the lower two bits must be zero. */
233 HOWTO (R_PPC_REL24, /* type */
235 2, /* size (0 = byte, 1 = short, 2 = long) */
237 TRUE, /* pc_relative */
239 complain_overflow_signed, /* complain_on_overflow */
240 bfd_elf_generic_reloc, /* special_function */
241 "R_PPC_REL24", /* name */
242 FALSE, /* partial_inplace */
244 0x3fffffc, /* dst_mask */
245 TRUE), /* pcrel_offset */
247 /* A relative 16 bit branch; the lower two bits must be zero. */
248 HOWTO (R_PPC_REL14, /* type */
250 2, /* size (0 = byte, 1 = short, 2 = long) */
252 TRUE, /* pc_relative */
254 complain_overflow_signed, /* complain_on_overflow */
255 bfd_elf_generic_reloc, /* special_function */
256 "R_PPC_REL14", /* name */
257 FALSE, /* partial_inplace */
259 0xfffc, /* dst_mask */
260 TRUE), /* pcrel_offset */
262 /* A relative 16 bit branch. Bit 10 should be set to indicate that
263 the branch is expected to be taken. The lower two bits must be
265 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
267 2, /* size (0 = byte, 1 = short, 2 = long) */
269 TRUE, /* pc_relative */
271 complain_overflow_signed, /* complain_on_overflow */
272 bfd_elf_generic_reloc, /* special_function */
273 "R_PPC_REL14_BRTAKEN", /* name */
274 FALSE, /* partial_inplace */
276 0xfffc, /* dst_mask */
277 TRUE), /* pcrel_offset */
279 /* A relative 16 bit branch. Bit 10 should be set to indicate that
280 the branch is not expected to be taken. The lower two bits must
282 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
284 2, /* size (0 = byte, 1 = short, 2 = long) */
286 TRUE, /* pc_relative */
288 complain_overflow_signed, /* complain_on_overflow */
289 bfd_elf_generic_reloc, /* special_function */
290 "R_PPC_REL14_BRNTAKEN",/* name */
291 FALSE, /* partial_inplace */
293 0xfffc, /* dst_mask */
294 TRUE), /* pcrel_offset */
296 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
298 HOWTO (R_PPC_GOT16, /* type */
300 1, /* size (0 = byte, 1 = short, 2 = long) */
302 FALSE, /* pc_relative */
304 complain_overflow_signed, /* complain_on_overflow */
305 bfd_elf_generic_reloc, /* special_function */
306 "R_PPC_GOT16", /* name */
307 FALSE, /* partial_inplace */
309 0xffff, /* dst_mask */
310 FALSE), /* pcrel_offset */
312 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
314 HOWTO (R_PPC_GOT16_LO, /* type */
316 1, /* size (0 = byte, 1 = short, 2 = long) */
318 FALSE, /* pc_relative */
320 complain_overflow_dont, /* complain_on_overflow */
321 bfd_elf_generic_reloc, /* special_function */
322 "R_PPC_GOT16_LO", /* name */
323 FALSE, /* partial_inplace */
325 0xffff, /* dst_mask */
326 FALSE), /* pcrel_offset */
328 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
330 HOWTO (R_PPC_GOT16_HI, /* type */
332 1, /* size (0 = byte, 1 = short, 2 = long) */
334 FALSE, /* pc_relative */
336 complain_overflow_bitfield, /* complain_on_overflow */
337 bfd_elf_generic_reloc, /* special_function */
338 "R_PPC_GOT16_HI", /* name */
339 FALSE, /* partial_inplace */
341 0xffff, /* dst_mask */
342 FALSE), /* pcrel_offset */
344 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
346 HOWTO (R_PPC_GOT16_HA, /* type */
348 1, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE, /* pc_relative */
352 complain_overflow_bitfield, /* complain_on_overflow */
353 ppc_elf_addr16_ha_reloc, /* special_function */
354 "R_PPC_GOT16_HA", /* name */
355 FALSE, /* partial_inplace */
357 0xffff, /* dst_mask */
358 FALSE), /* pcrel_offset */
360 /* Like R_PPC_REL24, but referring to the procedure linkage table
361 entry for the symbol. */
362 HOWTO (R_PPC_PLTREL24, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 TRUE, /* pc_relative */
368 complain_overflow_signed, /* complain_on_overflow */
369 bfd_elf_generic_reloc, /* special_function */
370 "R_PPC_PLTREL24", /* name */
371 FALSE, /* partial_inplace */
373 0x3fffffc, /* dst_mask */
374 TRUE), /* pcrel_offset */
376 /* This is used only by the dynamic linker. The symbol should exist
377 both in the object being run and in some shared library. The
378 dynamic linker copies the data addressed by the symbol from the
379 shared library into the object, because the object being
380 run has to have the data at some particular address. */
381 HOWTO (R_PPC_COPY, /* type */
383 2, /* size (0 = byte, 1 = short, 2 = long) */
385 FALSE, /* pc_relative */
387 complain_overflow_bitfield, /* complain_on_overflow */
388 bfd_elf_generic_reloc, /* special_function */
389 "R_PPC_COPY", /* name */
390 FALSE, /* partial_inplace */
393 FALSE), /* pcrel_offset */
395 /* Like R_PPC_ADDR32, but used when setting global offset table
397 HOWTO (R_PPC_GLOB_DAT, /* type */
399 2, /* size (0 = byte, 1 = short, 2 = long) */
401 FALSE, /* pc_relative */
403 complain_overflow_bitfield, /* complain_on_overflow */
404 bfd_elf_generic_reloc, /* special_function */
405 "R_PPC_GLOB_DAT", /* name */
406 FALSE, /* partial_inplace */
408 0xffffffff, /* dst_mask */
409 FALSE), /* pcrel_offset */
411 /* Marks a procedure linkage table entry for a symbol. */
412 HOWTO (R_PPC_JMP_SLOT, /* type */
414 2, /* size (0 = byte, 1 = short, 2 = long) */
416 FALSE, /* pc_relative */
418 complain_overflow_bitfield, /* complain_on_overflow */
419 bfd_elf_generic_reloc, /* special_function */
420 "R_PPC_JMP_SLOT", /* name */
421 FALSE, /* partial_inplace */
424 FALSE), /* pcrel_offset */
426 /* Used only by the dynamic linker. When the object is run, this
427 longword is set to the load address of the object, plus the
429 HOWTO (R_PPC_RELATIVE, /* type */
431 2, /* size (0 = byte, 1 = short, 2 = long) */
433 FALSE, /* pc_relative */
435 complain_overflow_bitfield, /* complain_on_overflow */
436 bfd_elf_generic_reloc, /* special_function */
437 "R_PPC_RELATIVE", /* name */
438 FALSE, /* partial_inplace */
440 0xffffffff, /* dst_mask */
441 FALSE), /* pcrel_offset */
443 /* Like R_PPC_REL24, but uses the value of the symbol within the
444 object rather than the final value. Normally used for
445 _GLOBAL_OFFSET_TABLE_. */
446 HOWTO (R_PPC_LOCAL24PC, /* type */
448 2, /* size (0 = byte, 1 = short, 2 = long) */
450 TRUE, /* pc_relative */
452 complain_overflow_signed, /* complain_on_overflow */
453 bfd_elf_generic_reloc, /* special_function */
454 "R_PPC_LOCAL24PC", /* name */
455 FALSE, /* partial_inplace */
457 0x3fffffc, /* dst_mask */
458 TRUE), /* pcrel_offset */
460 /* Like R_PPC_ADDR32, but may be unaligned. */
461 HOWTO (R_PPC_UADDR32, /* type */
463 2, /* size (0 = byte, 1 = short, 2 = long) */
465 FALSE, /* pc_relative */
467 complain_overflow_bitfield, /* complain_on_overflow */
468 bfd_elf_generic_reloc, /* special_function */
469 "R_PPC_UADDR32", /* name */
470 FALSE, /* partial_inplace */
472 0xffffffff, /* dst_mask */
473 FALSE), /* pcrel_offset */
475 /* Like R_PPC_ADDR16, but may be unaligned. */
476 HOWTO (R_PPC_UADDR16, /* type */
478 1, /* size (0 = byte, 1 = short, 2 = long) */
480 FALSE, /* pc_relative */
482 complain_overflow_bitfield, /* complain_on_overflow */
483 bfd_elf_generic_reloc, /* special_function */
484 "R_PPC_UADDR16", /* name */
485 FALSE, /* partial_inplace */
487 0xffff, /* dst_mask */
488 FALSE), /* pcrel_offset */
490 /* 32-bit PC relative */
491 HOWTO (R_PPC_REL32, /* type */
493 2, /* size (0 = byte, 1 = short, 2 = long) */
495 TRUE, /* pc_relative */
497 complain_overflow_bitfield, /* complain_on_overflow */
498 bfd_elf_generic_reloc, /* special_function */
499 "R_PPC_REL32", /* name */
500 FALSE, /* partial_inplace */
502 0xffffffff, /* dst_mask */
503 TRUE), /* pcrel_offset */
505 /* 32-bit relocation to the symbol's procedure linkage table.
506 FIXME: not supported. */
507 HOWTO (R_PPC_PLT32, /* type */
509 2, /* size (0 = byte, 1 = short, 2 = long) */
511 FALSE, /* pc_relative */
513 complain_overflow_bitfield, /* complain_on_overflow */
514 bfd_elf_generic_reloc, /* special_function */
515 "R_PPC_PLT32", /* name */
516 FALSE, /* partial_inplace */
519 FALSE), /* pcrel_offset */
521 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
522 FIXME: not supported. */
523 HOWTO (R_PPC_PLTREL32, /* type */
525 2, /* size (0 = byte, 1 = short, 2 = long) */
527 TRUE, /* pc_relative */
529 complain_overflow_bitfield, /* complain_on_overflow */
530 bfd_elf_generic_reloc, /* special_function */
531 "R_PPC_PLTREL32", /* name */
532 FALSE, /* partial_inplace */
535 TRUE), /* pcrel_offset */
537 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
539 HOWTO (R_PPC_PLT16_LO, /* type */
541 1, /* size (0 = byte, 1 = short, 2 = long) */
543 FALSE, /* pc_relative */
545 complain_overflow_dont, /* complain_on_overflow */
546 bfd_elf_generic_reloc, /* special_function */
547 "R_PPC_PLT16_LO", /* name */
548 FALSE, /* partial_inplace */
550 0xffff, /* dst_mask */
551 FALSE), /* pcrel_offset */
553 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
555 HOWTO (R_PPC_PLT16_HI, /* type */
557 1, /* size (0 = byte, 1 = short, 2 = long) */
559 FALSE, /* pc_relative */
561 complain_overflow_bitfield, /* complain_on_overflow */
562 bfd_elf_generic_reloc, /* special_function */
563 "R_PPC_PLT16_HI", /* name */
564 FALSE, /* partial_inplace */
566 0xffff, /* dst_mask */
567 FALSE), /* pcrel_offset */
569 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
571 HOWTO (R_PPC_PLT16_HA, /* type */
573 1, /* size (0 = byte, 1 = short, 2 = long) */
575 FALSE, /* pc_relative */
577 complain_overflow_bitfield, /* complain_on_overflow */
578 ppc_elf_addr16_ha_reloc, /* special_function */
579 "R_PPC_PLT16_HA", /* name */
580 FALSE, /* partial_inplace */
582 0xffff, /* dst_mask */
583 FALSE), /* pcrel_offset */
585 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
587 HOWTO (R_PPC_SDAREL16, /* type */
589 1, /* size (0 = byte, 1 = short, 2 = long) */
591 FALSE, /* pc_relative */
593 complain_overflow_signed, /* complain_on_overflow */
594 bfd_elf_generic_reloc, /* special_function */
595 "R_PPC_SDAREL16", /* name */
596 FALSE, /* partial_inplace */
598 0xffff, /* dst_mask */
599 FALSE), /* pcrel_offset */
601 /* 16-bit section relative relocation. */
602 HOWTO (R_PPC_SECTOFF, /* type */
604 1, /* size (0 = byte, 1 = short, 2 = long) */
606 FALSE, /* pc_relative */
608 complain_overflow_bitfield, /* complain_on_overflow */
609 bfd_elf_generic_reloc, /* special_function */
610 "R_PPC_SECTOFF", /* name */
611 FALSE, /* partial_inplace */
613 0xffff, /* dst_mask */
614 FALSE), /* pcrel_offset */
616 /* 16-bit lower half section relative relocation. */
617 HOWTO (R_PPC_SECTOFF_LO, /* type */
619 1, /* size (0 = byte, 1 = short, 2 = long) */
621 FALSE, /* pc_relative */
623 complain_overflow_dont, /* complain_on_overflow */
624 bfd_elf_generic_reloc, /* special_function */
625 "R_PPC_SECTOFF_LO", /* name */
626 FALSE, /* partial_inplace */
628 0xffff, /* dst_mask */
629 FALSE), /* pcrel_offset */
631 /* 16-bit upper half section relative relocation. */
632 HOWTO (R_PPC_SECTOFF_HI, /* type */
634 1, /* size (0 = byte, 1 = short, 2 = long) */
636 FALSE, /* pc_relative */
638 complain_overflow_bitfield, /* complain_on_overflow */
639 bfd_elf_generic_reloc, /* special_function */
640 "R_PPC_SECTOFF_HI", /* name */
641 FALSE, /* partial_inplace */
643 0xffff, /* dst_mask */
644 FALSE), /* pcrel_offset */
646 /* 16-bit upper half adjusted section relative relocation. */
647 HOWTO (R_PPC_SECTOFF_HA, /* type */
649 1, /* size (0 = byte, 1 = short, 2 = long) */
651 FALSE, /* pc_relative */
653 complain_overflow_bitfield, /* complain_on_overflow */
654 ppc_elf_addr16_ha_reloc, /* special_function */
655 "R_PPC_SECTOFF_HA", /* name */
656 FALSE, /* partial_inplace */
658 0xffff, /* dst_mask */
659 FALSE), /* pcrel_offset */
661 /* Marker reloc for TLS. */
664 2, /* size (0 = byte, 1 = short, 2 = long) */
666 FALSE, /* pc_relative */
668 complain_overflow_dont, /* complain_on_overflow */
669 bfd_elf_generic_reloc, /* special_function */
670 "R_PPC_TLS", /* name */
671 FALSE, /* partial_inplace */
674 FALSE), /* pcrel_offset */
676 /* Computes the load module index of the load module that contains the
677 definition of its TLS sym. */
678 HOWTO (R_PPC_DTPMOD32,
680 2, /* size (0 = byte, 1 = short, 2 = long) */
682 FALSE, /* pc_relative */
684 complain_overflow_dont, /* complain_on_overflow */
685 ppc_elf_unhandled_reloc, /* special_function */
686 "R_PPC_DTPMOD32", /* name */
687 FALSE, /* partial_inplace */
689 0xffffffff, /* dst_mask */
690 FALSE), /* pcrel_offset */
692 /* Computes a dtv-relative displacement, the difference between the value
693 of sym+add and the base address of the thread-local storage block that
694 contains the definition of sym, minus 0x8000. */
695 HOWTO (R_PPC_DTPREL32,
697 2, /* size (0 = byte, 1 = short, 2 = long) */
699 FALSE, /* pc_relative */
701 complain_overflow_dont, /* complain_on_overflow */
702 ppc_elf_unhandled_reloc, /* special_function */
703 "R_PPC_DTPREL32", /* name */
704 FALSE, /* partial_inplace */
706 0xffffffff, /* dst_mask */
707 FALSE), /* pcrel_offset */
709 /* A 16 bit dtprel reloc. */
710 HOWTO (R_PPC_DTPREL16,
712 1, /* size (0 = byte, 1 = short, 2 = long) */
714 FALSE, /* pc_relative */
716 complain_overflow_signed, /* complain_on_overflow */
717 ppc_elf_unhandled_reloc, /* special_function */
718 "R_PPC_DTPREL16", /* name */
719 FALSE, /* partial_inplace */
721 0xffff, /* dst_mask */
722 FALSE), /* pcrel_offset */
724 /* Like DTPREL16, but no overflow. */
725 HOWTO (R_PPC_DTPREL16_LO,
727 1, /* size (0 = byte, 1 = short, 2 = long) */
729 FALSE, /* pc_relative */
731 complain_overflow_dont, /* complain_on_overflow */
732 ppc_elf_unhandled_reloc, /* special_function */
733 "R_PPC_DTPREL16_LO", /* name */
734 FALSE, /* partial_inplace */
736 0xffff, /* dst_mask */
737 FALSE), /* pcrel_offset */
739 /* Like DTPREL16_LO, but next higher group of 16 bits. */
740 HOWTO (R_PPC_DTPREL16_HI,
742 1, /* size (0 = byte, 1 = short, 2 = long) */
744 FALSE, /* pc_relative */
746 complain_overflow_dont, /* complain_on_overflow */
747 ppc_elf_unhandled_reloc, /* special_function */
748 "R_PPC_DTPREL16_HI", /* name */
749 FALSE, /* partial_inplace */
751 0xffff, /* dst_mask */
752 FALSE), /* pcrel_offset */
754 /* Like DTPREL16_HI, but adjust for low 16 bits. */
755 HOWTO (R_PPC_DTPREL16_HA,
757 1, /* size (0 = byte, 1 = short, 2 = long) */
759 FALSE, /* pc_relative */
761 complain_overflow_dont, /* complain_on_overflow */
762 ppc_elf_unhandled_reloc, /* special_function */
763 "R_PPC_DTPREL16_HA", /* name */
764 FALSE, /* partial_inplace */
766 0xffff, /* dst_mask */
767 FALSE), /* pcrel_offset */
769 /* Computes a tp-relative displacement, the difference between the value of
770 sym+add and the value of the thread pointer (r13). */
771 HOWTO (R_PPC_TPREL32,
773 2, /* size (0 = byte, 1 = short, 2 = long) */
775 FALSE, /* pc_relative */
777 complain_overflow_dont, /* complain_on_overflow */
778 ppc_elf_unhandled_reloc, /* special_function */
779 "R_PPC_TPREL32", /* name */
780 FALSE, /* partial_inplace */
782 0xffffffff, /* dst_mask */
783 FALSE), /* pcrel_offset */
785 /* A 16 bit tprel reloc. */
786 HOWTO (R_PPC_TPREL16,
788 1, /* size (0 = byte, 1 = short, 2 = long) */
790 FALSE, /* pc_relative */
792 complain_overflow_signed, /* complain_on_overflow */
793 ppc_elf_unhandled_reloc, /* special_function */
794 "R_PPC_TPREL16", /* name */
795 FALSE, /* partial_inplace */
797 0xffff, /* dst_mask */
798 FALSE), /* pcrel_offset */
800 /* Like TPREL16, but no overflow. */
801 HOWTO (R_PPC_TPREL16_LO,
803 1, /* size (0 = byte, 1 = short, 2 = long) */
805 FALSE, /* pc_relative */
807 complain_overflow_dont, /* complain_on_overflow */
808 ppc_elf_unhandled_reloc, /* special_function */
809 "R_PPC_TPREL16_LO", /* name */
810 FALSE, /* partial_inplace */
812 0xffff, /* dst_mask */
813 FALSE), /* pcrel_offset */
815 /* Like TPREL16_LO, but next higher group of 16 bits. */
816 HOWTO (R_PPC_TPREL16_HI,
818 1, /* size (0 = byte, 1 = short, 2 = long) */
820 FALSE, /* pc_relative */
822 complain_overflow_dont, /* complain_on_overflow */
823 ppc_elf_unhandled_reloc, /* special_function */
824 "R_PPC_TPREL16_HI", /* name */
825 FALSE, /* partial_inplace */
827 0xffff, /* dst_mask */
828 FALSE), /* pcrel_offset */
830 /* Like TPREL16_HI, but adjust for low 16 bits. */
831 HOWTO (R_PPC_TPREL16_HA,
833 1, /* size (0 = byte, 1 = short, 2 = long) */
835 FALSE, /* pc_relative */
837 complain_overflow_dont, /* complain_on_overflow */
838 ppc_elf_unhandled_reloc, /* special_function */
839 "R_PPC_TPREL16_HA", /* name */
840 FALSE, /* partial_inplace */
842 0xffff, /* dst_mask */
843 FALSE), /* pcrel_offset */
845 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
846 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
847 to the first entry. */
848 HOWTO (R_PPC_GOT_TLSGD16,
850 1, /* size (0 = byte, 1 = short, 2 = long) */
852 FALSE, /* pc_relative */
854 complain_overflow_signed, /* complain_on_overflow */
855 ppc_elf_unhandled_reloc, /* special_function */
856 "R_PPC_GOT_TLSGD16", /* name */
857 FALSE, /* partial_inplace */
859 0xffff, /* dst_mask */
860 FALSE), /* pcrel_offset */
862 /* Like GOT_TLSGD16, but no overflow. */
863 HOWTO (R_PPC_GOT_TLSGD16_LO,
865 1, /* size (0 = byte, 1 = short, 2 = long) */
867 FALSE, /* pc_relative */
869 complain_overflow_dont, /* complain_on_overflow */
870 ppc_elf_unhandled_reloc, /* special_function */
871 "R_PPC_GOT_TLSGD16_LO", /* name */
872 FALSE, /* partial_inplace */
874 0xffff, /* dst_mask */
875 FALSE), /* pcrel_offset */
877 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
878 HOWTO (R_PPC_GOT_TLSGD16_HI,
880 1, /* size (0 = byte, 1 = short, 2 = long) */
882 FALSE, /* pc_relative */
884 complain_overflow_dont, /* complain_on_overflow */
885 ppc_elf_unhandled_reloc, /* special_function */
886 "R_PPC_GOT_TLSGD16_HI", /* name */
887 FALSE, /* partial_inplace */
889 0xffff, /* dst_mask */
890 FALSE), /* pcrel_offset */
892 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
893 HOWTO (R_PPC_GOT_TLSGD16_HA,
895 1, /* size (0 = byte, 1 = short, 2 = long) */
897 FALSE, /* pc_relative */
899 complain_overflow_dont, /* complain_on_overflow */
900 ppc_elf_unhandled_reloc, /* special_function */
901 "R_PPC_GOT_TLSGD16_HA", /* name */
902 FALSE, /* partial_inplace */
904 0xffff, /* dst_mask */
905 FALSE), /* pcrel_offset */
907 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
908 with values (sym+add)@dtpmod and zero, and computes the offset to the
910 HOWTO (R_PPC_GOT_TLSLD16,
912 1, /* size (0 = byte, 1 = short, 2 = long) */
914 FALSE, /* pc_relative */
916 complain_overflow_signed, /* complain_on_overflow */
917 ppc_elf_unhandled_reloc, /* special_function */
918 "R_PPC_GOT_TLSLD16", /* name */
919 FALSE, /* partial_inplace */
921 0xffff, /* dst_mask */
922 FALSE), /* pcrel_offset */
924 /* Like GOT_TLSLD16, but no overflow. */
925 HOWTO (R_PPC_GOT_TLSLD16_LO,
927 1, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE, /* pc_relative */
931 complain_overflow_dont, /* complain_on_overflow */
932 ppc_elf_unhandled_reloc, /* special_function */
933 "R_PPC_GOT_TLSLD16_LO", /* name */
934 FALSE, /* partial_inplace */
936 0xffff, /* dst_mask */
937 FALSE), /* pcrel_offset */
939 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
940 HOWTO (R_PPC_GOT_TLSLD16_HI,
942 1, /* size (0 = byte, 1 = short, 2 = long) */
944 FALSE, /* pc_relative */
946 complain_overflow_dont, /* complain_on_overflow */
947 ppc_elf_unhandled_reloc, /* special_function */
948 "R_PPC_GOT_TLSLD16_HI", /* name */
949 FALSE, /* partial_inplace */
951 0xffff, /* dst_mask */
952 FALSE), /* pcrel_offset */
954 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
955 HOWTO (R_PPC_GOT_TLSLD16_HA,
957 1, /* size (0 = byte, 1 = short, 2 = long) */
959 FALSE, /* pc_relative */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc_elf_unhandled_reloc, /* special_function */
963 "R_PPC_GOT_TLSLD16_HA", /* name */
964 FALSE, /* partial_inplace */
966 0xffff, /* dst_mask */
967 FALSE), /* pcrel_offset */
969 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
970 the offset to the entry. */
971 HOWTO (R_PPC_GOT_DTPREL16,
973 1, /* size (0 = byte, 1 = short, 2 = long) */
975 FALSE, /* pc_relative */
977 complain_overflow_signed, /* complain_on_overflow */
978 ppc_elf_unhandled_reloc, /* special_function */
979 "R_PPC_GOT_DTPREL16", /* name */
980 FALSE, /* partial_inplace */
982 0xffff, /* dst_mask */
983 FALSE), /* pcrel_offset */
985 /* Like GOT_DTPREL16, but no overflow. */
986 HOWTO (R_PPC_GOT_DTPREL16_LO,
988 1, /* size (0 = byte, 1 = short, 2 = long) */
990 FALSE, /* pc_relative */
992 complain_overflow_dont, /* complain_on_overflow */
993 ppc_elf_unhandled_reloc, /* special_function */
994 "R_PPC_GOT_DTPREL16_LO", /* name */
995 FALSE, /* partial_inplace */
997 0xffff, /* dst_mask */
998 FALSE), /* pcrel_offset */
1000 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1001 HOWTO (R_PPC_GOT_DTPREL16_HI,
1002 16, /* rightshift */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 FALSE, /* pc_relative */
1007 complain_overflow_dont, /* complain_on_overflow */
1008 ppc_elf_unhandled_reloc, /* special_function */
1009 "R_PPC_GOT_DTPREL16_HI", /* name */
1010 FALSE, /* partial_inplace */
1012 0xffff, /* dst_mask */
1013 FALSE), /* pcrel_offset */
1015 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1016 HOWTO (R_PPC_GOT_DTPREL16_HA,
1017 16, /* rightshift */
1018 1, /* size (0 = byte, 1 = short, 2 = long) */
1020 FALSE, /* pc_relative */
1022 complain_overflow_dont, /* complain_on_overflow */
1023 ppc_elf_unhandled_reloc, /* special_function */
1024 "R_PPC_GOT_DTPREL16_HA", /* name */
1025 FALSE, /* partial_inplace */
1027 0xffff, /* dst_mask */
1028 FALSE), /* pcrel_offset */
1030 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1031 offset to the entry. */
1032 HOWTO (R_PPC_GOT_TPREL16,
1034 1, /* size (0 = byte, 1 = short, 2 = long) */
1036 FALSE, /* pc_relative */
1038 complain_overflow_signed, /* complain_on_overflow */
1039 ppc_elf_unhandled_reloc, /* special_function */
1040 "R_PPC_GOT_TPREL16", /* name */
1041 FALSE, /* partial_inplace */
1043 0xffff, /* dst_mask */
1044 FALSE), /* pcrel_offset */
1046 /* Like GOT_TPREL16, but no overflow. */
1047 HOWTO (R_PPC_GOT_TPREL16_LO,
1049 1, /* size (0 = byte, 1 = short, 2 = long) */
1051 FALSE, /* pc_relative */
1053 complain_overflow_dont, /* complain_on_overflow */
1054 ppc_elf_unhandled_reloc, /* special_function */
1055 "R_PPC_GOT_TPREL16_LO", /* name */
1056 FALSE, /* partial_inplace */
1058 0xffff, /* dst_mask */
1059 FALSE), /* pcrel_offset */
1061 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1062 HOWTO (R_PPC_GOT_TPREL16_HI,
1063 16, /* rightshift */
1064 1, /* size (0 = byte, 1 = short, 2 = long) */
1066 FALSE, /* pc_relative */
1068 complain_overflow_dont, /* complain_on_overflow */
1069 ppc_elf_unhandled_reloc, /* special_function */
1070 "R_PPC_GOT_TPREL16_HI", /* name */
1071 FALSE, /* partial_inplace */
1073 0xffff, /* dst_mask */
1074 FALSE), /* pcrel_offset */
1076 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1077 HOWTO (R_PPC_GOT_TPREL16_HA,
1078 16, /* rightshift */
1079 1, /* size (0 = byte, 1 = short, 2 = long) */
1081 FALSE, /* pc_relative */
1083 complain_overflow_dont, /* complain_on_overflow */
1084 ppc_elf_unhandled_reloc, /* special_function */
1085 "R_PPC_GOT_TPREL16_HA", /* name */
1086 FALSE, /* partial_inplace */
1088 0xffff, /* dst_mask */
1089 FALSE), /* pcrel_offset */
1091 /* The remaining relocs are from the Embedded ELF ABI, and are not
1092 in the SVR4 ELF ABI. */
1094 /* 32 bit value resulting from the addend minus the symbol. */
1095 HOWTO (R_PPC_EMB_NADDR32, /* type */
1097 2, /* size (0 = byte, 1 = short, 2 = long) */
1099 FALSE, /* pc_relative */
1101 complain_overflow_bitfield, /* complain_on_overflow */
1102 bfd_elf_generic_reloc, /* special_function */
1103 "R_PPC_EMB_NADDR32", /* name */
1104 FALSE, /* partial_inplace */
1106 0xffffffff, /* dst_mask */
1107 FALSE), /* pcrel_offset */
1109 /* 16 bit value resulting from the addend minus the symbol. */
1110 HOWTO (R_PPC_EMB_NADDR16, /* type */
1112 1, /* size (0 = byte, 1 = short, 2 = long) */
1114 FALSE, /* pc_relative */
1116 complain_overflow_bitfield, /* complain_on_overflow */
1117 bfd_elf_generic_reloc, /* special_function */
1118 "R_PPC_EMB_NADDR16", /* name */
1119 FALSE, /* partial_inplace */
1121 0xffff, /* dst_mask */
1122 FALSE), /* pcrel_offset */
1124 /* 16 bit value resulting from the addend minus the symbol. */
1125 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1127 1, /* size (0 = byte, 1 = short, 2 = long) */
1129 FALSE, /* pc_relative */
1131 complain_overflow_dont,/* complain_on_overflow */
1132 bfd_elf_generic_reloc, /* special_function */
1133 "R_PPC_EMB_ADDR16_LO", /* name */
1134 FALSE, /* partial_inplace */
1136 0xffff, /* dst_mask */
1137 FALSE), /* pcrel_offset */
1139 /* The high order 16 bits of the addend minus the symbol. */
1140 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1141 16, /* rightshift */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 FALSE, /* pc_relative */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 bfd_elf_generic_reloc, /* special_function */
1148 "R_PPC_EMB_NADDR16_HI", /* name */
1149 FALSE, /* partial_inplace */
1151 0xffff, /* dst_mask */
1152 FALSE), /* pcrel_offset */
1154 /* The high order 16 bits of the result of the addend minus the address,
1155 plus 1 if the contents of the low 16 bits, treated as a signed number,
1157 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1158 16, /* rightshift */
1159 1, /* size (0 = byte, 1 = short, 2 = long) */
1161 FALSE, /* pc_relative */
1163 complain_overflow_dont, /* complain_on_overflow */
1164 ppc_elf_addr16_ha_reloc, /* special_function */
1165 "R_PPC_EMB_NADDR16_HA", /* name */
1166 FALSE, /* partial_inplace */
1168 0xffff, /* dst_mask */
1169 FALSE), /* pcrel_offset */
1171 /* 16 bit value resulting from allocating a 4 byte word to hold an
1172 address in the .sdata section, and returning the offset from
1173 _SDA_BASE_ for that relocation. */
1174 HOWTO (R_PPC_EMB_SDAI16, /* type */
1176 1, /* size (0 = byte, 1 = short, 2 = long) */
1178 FALSE, /* pc_relative */
1180 complain_overflow_bitfield, /* complain_on_overflow */
1181 bfd_elf_generic_reloc, /* special_function */
1182 "R_PPC_EMB_SDAI16", /* name */
1183 FALSE, /* partial_inplace */
1185 0xffff, /* dst_mask */
1186 FALSE), /* pcrel_offset */
1188 /* 16 bit value resulting from allocating a 4 byte word to hold an
1189 address in the .sdata2 section, and returning the offset from
1190 _SDA2_BASE_ for that relocation. */
1191 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1193 1, /* size (0 = byte, 1 = short, 2 = long) */
1195 FALSE, /* pc_relative */
1197 complain_overflow_bitfield, /* complain_on_overflow */
1198 bfd_elf_generic_reloc, /* special_function */
1199 "R_PPC_EMB_SDA2I16", /* name */
1200 FALSE, /* partial_inplace */
1202 0xffff, /* dst_mask */
1203 FALSE), /* pcrel_offset */
1205 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1206 small data items. */
1207 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1209 1, /* size (0 = byte, 1 = short, 2 = long) */
1211 FALSE, /* pc_relative */
1213 complain_overflow_signed, /* complain_on_overflow */
1214 bfd_elf_generic_reloc, /* special_function */
1215 "R_PPC_EMB_SDA2REL", /* name */
1216 FALSE, /* partial_inplace */
1218 0xffff, /* dst_mask */
1219 FALSE), /* pcrel_offset */
1221 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1222 signed offset from the appropriate base, and filling in the register
1223 field with the appropriate register (0, 2, or 13). */
1224 HOWTO (R_PPC_EMB_SDA21, /* type */
1226 2, /* size (0 = byte, 1 = short, 2 = long) */
1228 FALSE, /* pc_relative */
1230 complain_overflow_signed, /* complain_on_overflow */
1231 bfd_elf_generic_reloc, /* special_function */
1232 "R_PPC_EMB_SDA21", /* name */
1233 FALSE, /* partial_inplace */
1235 0xffff, /* dst_mask */
1236 FALSE), /* pcrel_offset */
1238 /* Relocation not handled: R_PPC_EMB_MRKREF */
1239 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1240 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1241 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1242 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1243 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1245 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1246 in the 16 bit signed offset from the appropriate base, and filling in the
1247 register field with the appropriate register (0, 2, or 13). */
1248 HOWTO (R_PPC_EMB_RELSDA, /* type */
1250 1, /* size (0 = byte, 1 = short, 2 = long) */
1252 TRUE, /* pc_relative */
1254 complain_overflow_signed, /* complain_on_overflow */
1255 bfd_elf_generic_reloc, /* special_function */
1256 "R_PPC_EMB_RELSDA", /* name */
1257 FALSE, /* partial_inplace */
1259 0xffff, /* dst_mask */
1260 FALSE), /* pcrel_offset */
1262 /* GNU extension to record C++ vtable hierarchy. */
1263 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1265 0, /* size (0 = byte, 1 = short, 2 = long) */
1267 FALSE, /* pc_relative */
1269 complain_overflow_dont, /* complain_on_overflow */
1270 NULL, /* special_function */
1271 "R_PPC_GNU_VTINHERIT", /* name */
1272 FALSE, /* partial_inplace */
1275 FALSE), /* pcrel_offset */
1277 /* GNU extension to record C++ vtable member usage. */
1278 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1280 0, /* size (0 = byte, 1 = short, 2 = long) */
1282 FALSE, /* pc_relative */
1284 complain_overflow_dont, /* complain_on_overflow */
1285 NULL, /* special_function */
1286 "R_PPC_GNU_VTENTRY", /* name */
1287 FALSE, /* partial_inplace */
1290 FALSE), /* pcrel_offset */
1292 /* Phony reloc to handle AIX style TOC entries. */
1293 HOWTO (R_PPC_TOC16, /* type */
1295 1, /* size (0 = byte, 1 = short, 2 = long) */
1297 FALSE, /* pc_relative */
1299 complain_overflow_signed, /* complain_on_overflow */
1300 bfd_elf_generic_reloc, /* special_function */
1301 "R_PPC_TOC16", /* name */
1302 FALSE, /* partial_inplace */
1304 0xffff, /* dst_mask */
1305 FALSE), /* pcrel_offset */
1308 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1311 ppc_elf_howto_init (void)
1313 unsigned int i, type;
1316 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1319 type = ppc_elf_howto_raw[i].type;
1320 if (type >= (sizeof (ppc_elf_howto_table)
1321 / sizeof (ppc_elf_howto_table[0])))
1323 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1327 static reloc_howto_type *
1328 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1329 bfd_reloc_code_real_type code)
1331 enum elf_ppc_reloc_type r;
1333 /* Initialize howto table if not already done. */
1334 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1335 ppc_elf_howto_init ();
1342 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1343 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1344 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1345 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1346 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1347 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1348 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1349 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1350 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1351 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1352 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1353 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1354 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1355 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1356 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1357 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1358 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1359 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1360 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1361 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1362 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1363 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1364 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1365 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1366 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1367 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1368 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1369 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1370 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1371 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1372 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1373 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1374 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1375 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1376 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1377 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1378 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1379 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1380 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1381 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1382 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1383 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1384 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1385 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1386 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1387 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1388 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1389 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1390 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1391 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1392 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1393 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1394 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1395 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1396 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1397 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1398 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1399 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1400 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1401 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1402 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1403 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1404 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1405 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1406 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1407 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1408 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1409 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1410 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1411 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1412 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1413 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1414 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1415 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1416 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1417 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1418 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1419 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1420 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1421 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1422 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1425 return ppc_elf_howto_table[r];
1428 /* Set the howto pointer for a PowerPC ELF reloc. */
1431 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1433 Elf_Internal_Rela *dst)
1435 /* Initialize howto table if not already done. */
1436 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1437 ppc_elf_howto_init ();
1439 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1440 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1443 /* Handle the R_PPC_ADDR16_HA reloc. */
1445 static bfd_reloc_status_type
1446 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1447 arelent *reloc_entry,
1449 void *data ATTRIBUTE_UNUSED,
1450 asection *input_section,
1452 char **error_message ATTRIBUTE_UNUSED)
1456 if (output_bfd != NULL)
1458 reloc_entry->address += input_section->output_offset;
1459 return bfd_reloc_ok;
1462 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1463 return bfd_reloc_outofrange;
1465 if (bfd_is_com_section (symbol->section))
1468 relocation = symbol->value;
1470 relocation += symbol->section->output_section->vma;
1471 relocation += symbol->section->output_offset;
1472 relocation += reloc_entry->addend;
1474 reloc_entry->addend += (relocation & 0x8000) << 1;
1476 return bfd_reloc_continue;
1479 static bfd_reloc_status_type
1480 ppc_elf_unhandled_reloc (bfd *abfd,
1481 arelent *reloc_entry,
1484 asection *input_section,
1486 char **error_message)
1488 /* If this is a relocatable link (output_bfd test tells us), just
1489 call the generic function. Any adjustment will be done at final
1491 if (output_bfd != NULL)
1492 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1493 input_section, output_bfd, error_message);
1495 if (error_message != NULL)
1497 static char buf[60];
1498 sprintf (buf, _("generic linker can't handle %s"),
1499 reloc_entry->howto->name);
1500 *error_message = buf;
1502 return bfd_reloc_dangerous;
1505 /* Sections created by the linker. */
1507 typedef struct elf_linker_section
1509 /* Pointer to the bfd section. */
1513 /* Associated bss section name. */
1514 const char *bss_name;
1515 /* Associated symbol name. */
1516 const char *sym_name;
1517 /* Value of symbol. */
1519 } elf_linker_section_t;
1521 /* Linked list of allocated pointer entries. This hangs off of the
1522 symbol lists, and provides allows us to return different pointers,
1523 based on different addend's. */
1525 typedef struct elf_linker_section_pointers
1527 /* next allocated pointer for this symbol */
1528 struct elf_linker_section_pointers *next;
1529 /* offset of pointer from beginning of section */
1533 /* which linker section this is */
1534 elf_linker_section_t *lsect;
1535 } elf_linker_section_pointers_t;
1537 struct ppc_elf_obj_tdata
1539 struct elf_obj_tdata elf;
1541 /* A mapping from local symbols to offsets into the various linker
1542 sections added. This is index by the symbol index. */
1543 elf_linker_section_pointers_t **linker_section_pointers;
1546 #define ppc_elf_tdata(bfd) \
1547 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1549 #define elf_local_ptr_offsets(bfd) \
1550 (ppc_elf_tdata (bfd)->linker_section_pointers)
1552 /* Override the generic function because we store some extras. */
1555 ppc_elf_mkobject (bfd *abfd)
1557 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1558 abfd->tdata.any = bfd_zalloc (abfd, amt);
1559 if (abfd->tdata.any == NULL)
1564 /* Fix bad default arch selected for a 32 bit input bfd when the
1565 default is 64 bit. */
1568 ppc_elf_object_p (bfd *abfd)
1570 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1572 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1574 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1576 /* Relies on arch after 64 bit default being 32 bit default. */
1577 abfd->arch_info = abfd->arch_info->next;
1578 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1584 /* Function to set whether a module needs the -mrelocatable bit set. */
1587 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1589 BFD_ASSERT (!elf_flags_init (abfd)
1590 || elf_elfheader (abfd)->e_flags == flags);
1592 elf_elfheader (abfd)->e_flags = flags;
1593 elf_flags_init (abfd) = TRUE;
1597 /* Support for core dump NOTE sections. */
1600 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1605 switch (note->descsz)
1610 case 268: /* Linux/PPC. */
1612 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1615 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1624 /* Make a ".reg/999" section. */
1625 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1626 size, note->descpos + offset);
1630 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1632 switch (note->descsz)
1637 case 128: /* Linux/PPC elf_prpsinfo. */
1638 elf_tdata (abfd)->core_program
1639 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1640 elf_tdata (abfd)->core_command
1641 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1644 /* Note that for some reason, a spurious space is tacked
1645 onto the end of the args in some (at least one anyway)
1646 implementations, so strip it off if it exists. */
1649 char *command = elf_tdata (abfd)->core_command;
1650 int n = strlen (command);
1652 if (0 < n && command[n - 1] == ' ')
1653 command[n - 1] = '\0';
1659 /* Return address for Ith PLT stub in section PLT, for relocation REL
1660 or (bfd_vma) -1 if it should not be included. */
1663 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1664 const asection *plt ATTRIBUTE_UNUSED,
1667 return rel->address;
1670 /* Handle a PowerPC specific section when reading an object file. This
1671 is called when bfd_section_from_shdr finds a section with an unknown
1675 ppc_elf_section_from_shdr (bfd *abfd,
1676 Elf_Internal_Shdr *hdr,
1683 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1686 newsect = hdr->bfd_section;
1687 flags = bfd_get_section_flags (abfd, newsect);
1688 if (hdr->sh_flags & SHF_EXCLUDE)
1689 flags |= SEC_EXCLUDE;
1691 if (hdr->sh_type == SHT_ORDERED)
1692 flags |= SEC_SORT_ENTRIES;
1694 bfd_set_section_flags (abfd, newsect, flags);
1698 /* Set up any other section flags and such that may be necessary. */
1701 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1702 Elf_Internal_Shdr *shdr,
1705 if ((asect->flags & SEC_EXCLUDE) != 0)
1706 shdr->sh_flags |= SHF_EXCLUDE;
1708 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1709 shdr->sh_type = SHT_ORDERED;
1714 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1715 need to bump up the number of section headers. */
1718 ppc_elf_additional_program_headers (bfd *abfd)
1723 s = bfd_get_section_by_name (abfd, ".sbss2");
1724 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1727 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1728 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1734 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1735 .PPC.EMB.sbss0 a normal section, and not a bss section so
1736 that the linker doesn't crater when trying to make more than
1739 static struct bfd_elf_special_section const ppc_elf_special_sections[]=
1741 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1742 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1743 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1744 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1745 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1746 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1747 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1748 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1749 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1750 { NULL, 0, 0, 0, 0 }
1753 /* Very simple linked list structure for recording apuinfo values. */
1754 typedef struct apuinfo_list
1756 struct apuinfo_list *next;
1757 unsigned long value;
1761 static apuinfo_list *head;
1765 apuinfo_list_init (void)
1771 apuinfo_list_add (unsigned long value)
1773 apuinfo_list *entry = head;
1775 while (entry != NULL)
1777 if (entry->value == value)
1779 entry = entry->next;
1782 entry = bfd_malloc (sizeof (* entry));
1786 entry->value = value;
1792 apuinfo_list_length (void)
1794 apuinfo_list *entry;
1795 unsigned long count;
1797 for (entry = head, count = 0;
1799 entry = entry->next)
1805 static inline unsigned long
1806 apuinfo_list_element (unsigned long number)
1808 apuinfo_list * entry;
1812 entry = entry->next)
1815 return entry ? entry->value : 0;
1819 apuinfo_list_finish (void)
1821 apuinfo_list *entry;
1823 for (entry = head; entry;)
1825 apuinfo_list *next = entry->next;
1833 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
1834 #define APUINFO_LABEL "APUinfo"
1836 /* Scan the input BFDs and create a linked list of
1837 the APUinfo values that will need to be emitted. */
1840 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1845 unsigned num_input_sections;
1846 bfd_size_type output_section_size;
1848 unsigned num_entries;
1849 unsigned long offset;
1850 unsigned long length;
1851 const char *error_message = NULL;
1853 if (link_info == NULL)
1856 /* Scan the input bfds, looking for apuinfo sections. */
1857 num_input_sections = 0;
1858 output_section_size = 0;
1860 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
1862 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1865 ++ num_input_sections;
1866 output_section_size += asec->size;
1870 /* We need at least one input sections
1871 in order to make merging worthwhile. */
1872 if (num_input_sections < 1)
1875 /* Just make sure that the output section exists as well. */
1876 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1880 /* Allocate a buffer for the contents of the input sections. */
1881 buffer = bfd_malloc (output_section_size);
1886 apuinfo_list_init ();
1888 /* Read in the input sections contents. */
1889 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
1891 unsigned long datum;
1894 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1898 length = asec->size;
1901 error_message = _("corrupt or empty %s section in %B");
1905 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
1906 || (bfd_bread (buffer + offset, length, ibfd) != length))
1908 error_message = _("unable to read in %s section from %B");
1912 /* Process the contents of the section. */
1913 ptr = buffer + offset;
1914 error_message = _("corrupt %s section in %B");
1916 /* Verify the contents of the header. Note - we have to
1917 extract the values this way in order to allow for a
1918 host whose endian-ness is different from the target. */
1919 datum = bfd_get_32 (ibfd, ptr);
1920 if (datum != sizeof APUINFO_LABEL)
1923 datum = bfd_get_32 (ibfd, ptr + 8);
1927 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
1930 /* Get the number of bytes used for apuinfo entries. */
1931 datum = bfd_get_32 (ibfd, ptr + 4);
1932 if (datum + 20 != length)
1935 /* Make sure that we do not run off the end of the section. */
1936 if (offset + length > output_section_size)
1939 /* Scan the apuinfo section, building a list of apuinfo numbers. */
1940 for (i = 0; i < datum; i += 4)
1941 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
1943 /* Update the offset. */
1947 error_message = NULL;
1949 /* Compute the size of the output section. */
1950 num_entries = apuinfo_list_length ();
1951 output_section_size = 20 + num_entries * 4;
1953 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1955 if (! bfd_set_section_size (abfd, asec, output_section_size))
1957 error_message = _("warning: unable to set size of %s section in %B");
1963 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
1966 /* Prevent the output section from accumulating the input sections'
1967 contents. We have already stored this in our linked list structure. */
1970 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
1972 bfd_byte *contents ATTRIBUTE_UNUSED)
1974 return (apuinfo_list_length ()
1975 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
1978 /* Finally we can generate the output section. */
1981 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
1986 unsigned num_entries;
1987 bfd_size_type length;
1989 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1993 if (apuinfo_list_length () == 0)
1996 length = asec->size;
2000 buffer = bfd_malloc (length);
2003 (*_bfd_error_handler)
2004 (_("failed to allocate space for new APUinfo section."));
2008 /* Create the apuinfo header. */
2009 num_entries = apuinfo_list_length ();
2010 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2011 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2012 bfd_put_32 (abfd, 0x2, buffer + 8);
2013 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2016 for (i = 0; i < num_entries; i++)
2018 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2022 if (length != asec->size)
2023 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2025 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2026 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2030 apuinfo_list_finish ();
2033 /* The following functions are specific to the ELF linker, while
2034 functions above are used generally. They appear in this file more
2035 or less in the order in which they are called. eg.
2036 ppc_elf_check_relocs is called early in the link process,
2037 ppc_elf_finish_dynamic_sections is one of the last functions
2040 /* The PPC linker needs to keep track of the number of relocs that it
2041 decides to copy as dynamic relocs in check_relocs for each symbol.
2042 This is so that it can later discard them if they are found to be
2043 unnecessary. We store the information in a field extending the
2044 regular ELF linker hash table. */
2046 struct ppc_elf_dyn_relocs
2048 struct ppc_elf_dyn_relocs *next;
2050 /* The input section of the reloc. */
2053 /* Total number of relocs copied for the input section. */
2054 bfd_size_type count;
2056 /* Number of pc-relative relocs copied for the input section. */
2057 bfd_size_type pc_count;
2060 /* Of those relocs that might be copied as dynamic relocs, this macro
2061 selects those that must be copied when linking a shared library,
2062 even when the symbol is local. */
2064 #define MUST_BE_DYN_RELOC(RTYPE) \
2065 ((RTYPE) != R_PPC_REL24 \
2066 && (RTYPE) != R_PPC_REL14 \
2067 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2068 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2069 && (RTYPE) != R_PPC_REL32)
2071 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2072 copying dynamic variables from a shared lib into an app's dynbss
2073 section, and instead use a dynamic relocation to point into the
2075 #define ELIMINATE_COPY_RELOCS 1
2077 /* PPC ELF linker hash entry. */
2079 struct ppc_elf_link_hash_entry
2081 struct elf_link_hash_entry elf;
2083 /* If this symbol is used in the linker created sections, the processor
2084 specific backend uses this field to map the field into the offset
2085 from the beginning of the section. */
2086 elf_linker_section_pointers_t *linker_section_pointer;
2088 /* Track dynamic relocs copied for this symbol. */
2089 struct ppc_elf_dyn_relocs *dyn_relocs;
2091 /* Contexts in which symbol is used in the GOT (or TOC).
2092 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2093 corresponding relocs are encountered during check_relocs.
2094 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2095 indicate the corresponding GOT entry type is not needed. */
2096 #define TLS_GD 1 /* GD reloc. */
2097 #define TLS_LD 2 /* LD reloc. */
2098 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2099 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2100 #define TLS_TLS 16 /* Any TLS reloc. */
2101 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2105 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2107 /* PPC ELF linker hash table. */
2109 struct ppc_elf_link_hash_table
2111 struct elf_link_hash_table elf;
2113 /* Short-cuts to get to dynamic linker sections. */
2122 elf_linker_section_t sdata[2];
2125 /* Shortcut to .__tls_get_addr. */
2126 struct elf_link_hash_entry *tls_get_addr;
2128 /* TLS local dynamic got entry handling. */
2130 bfd_signed_vma refcount;
2134 /* Small local sym to section mapping cache. */
2135 struct sym_sec_cache sym_sec;
2138 /* Get the PPC ELF linker hash table from a link_info structure. */
2140 #define ppc_elf_hash_table(p) \
2141 ((struct ppc_elf_link_hash_table *) (p)->hash)
2143 /* Create an entry in a PPC ELF linker hash table. */
2145 static struct bfd_hash_entry *
2146 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2147 struct bfd_hash_table *table,
2150 /* Allocate the structure if it has not already been allocated by a
2154 entry = bfd_hash_allocate (table,
2155 sizeof (struct ppc_elf_link_hash_entry));
2160 /* Call the allocation method of the superclass. */
2161 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2164 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2165 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2166 ppc_elf_hash_entry (entry)->tls_mask = 0;
2172 /* Create a PPC ELF linker hash table. */
2174 static struct bfd_link_hash_table *
2175 ppc_elf_link_hash_table_create (bfd *abfd)
2177 struct ppc_elf_link_hash_table *ret;
2179 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2183 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2184 ppc_elf_link_hash_newfunc))
2190 ret->sdata[0].name = ".sdata";
2191 ret->sdata[0].sym_name = "_SDA_BASE_";
2192 ret->sdata[0].bss_name = ".sbss";
2194 ret->sdata[1].name = ".sdata2";
2195 ret->sdata[1].sym_name = "_SDA2_BASE_";
2196 ret->sdata[1].bss_name = ".sbss2";
2198 return &ret->elf.root;
2201 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2204 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2206 struct ppc_elf_link_hash_table *htab;
2210 if (!_bfd_elf_create_got_section (abfd, info))
2213 htab = ppc_elf_hash_table (info);
2214 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2218 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2219 | SEC_LINKER_CREATED);
2220 if (!bfd_set_section_flags (abfd, s, flags))
2223 htab->relgot = bfd_make_section (abfd, ".rela.got");
2225 || ! bfd_set_section_flags (abfd, htab->relgot,
2226 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2227 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2229 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2235 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2236 to output sections (just like _bfd_elf_create_dynamic_sections has
2237 to create .dynbss and .rela.bss). */
2240 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2242 struct ppc_elf_link_hash_table *htab;
2246 htab = ppc_elf_hash_table (info);
2248 if (htab->got == NULL
2249 && !ppc_elf_create_got (abfd, info))
2252 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2255 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2256 | SEC_LINKER_CREATED);
2258 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2259 htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
2261 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2266 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2267 htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss");
2269 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2270 || ! bfd_set_section_alignment (abfd, s, 2))
2274 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2275 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2279 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
2280 return bfd_set_section_flags (abfd, s, flags);
2283 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2286 ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
2287 struct elf_link_hash_entry *dir,
2288 struct elf_link_hash_entry *ind)
2290 struct ppc_elf_link_hash_entry *edir, *eind;
2292 edir = (struct ppc_elf_link_hash_entry *) dir;
2293 eind = (struct ppc_elf_link_hash_entry *) ind;
2295 if (eind->dyn_relocs != NULL)
2297 if (edir->dyn_relocs != NULL)
2299 struct ppc_elf_dyn_relocs **pp;
2300 struct ppc_elf_dyn_relocs *p;
2302 if (ind->root.type == bfd_link_hash_indirect)
2305 /* Add reloc counts against the weak sym to the strong sym
2306 list. Merge any entries against the same section. */
2307 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2309 struct ppc_elf_dyn_relocs *q;
2311 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2312 if (q->sec == p->sec)
2314 q->pc_count += p->pc_count;
2315 q->count += p->count;
2322 *pp = edir->dyn_relocs;
2325 edir->dyn_relocs = eind->dyn_relocs;
2326 eind->dyn_relocs = NULL;
2329 edir->tls_mask |= eind->tls_mask;
2331 if (ELIMINATE_COPY_RELOCS
2332 && ind->root.type != bfd_link_hash_indirect
2333 && dir->dynamic_adjusted)
2335 /* If called to transfer flags for a weakdef during processing
2336 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2337 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2338 dir->ref_dynamic |= ind->ref_dynamic;
2339 dir->ref_regular |= ind->ref_regular;
2340 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
2341 dir->needs_plt |= ind->needs_plt;
2344 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
2347 /* Return 1 if target is one of ours. */
2350 is_ppc_elf_target (const struct bfd_target *targ)
2352 extern const bfd_target bfd_elf32_powerpc_vec;
2353 extern const bfd_target bfd_elf32_powerpcle_vec;
2355 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2358 /* Hook called by the linker routine which adds symbols from an object
2359 file. We use it to put .comm items in .sbss, and not .bss. */
2362 ppc_elf_add_symbol_hook (bfd *abfd,
2363 struct bfd_link_info *info,
2364 Elf_Internal_Sym *sym,
2365 const char **namep ATTRIBUTE_UNUSED,
2366 flagword *flagsp ATTRIBUTE_UNUSED,
2370 if (sym->st_shndx == SHN_COMMON
2371 && !info->relocatable
2372 && sym->st_size <= elf_gp_size (abfd)
2373 && is_ppc_elf_target (info->hash->creator))
2375 /* Common symbols less than or equal to -G nn bytes are automatically
2377 struct ppc_elf_link_hash_table *htab;
2379 htab = ppc_elf_hash_table (info);
2380 if (htab->sbss == NULL)
2382 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2384 if (!htab->elf.dynobj)
2385 htab->elf.dynobj = abfd;
2387 htab->sbss = bfd_make_section_anyway (htab->elf.dynobj, ".sbss");
2388 if (htab->sbss == NULL
2389 || ! bfd_set_section_flags (htab->elf.dynobj, htab->sbss, flags))
2394 *valp = sym->st_size;
2400 /* Create a special linker section. */
2403 ppc_elf_create_linker_section (bfd *abfd,
2404 struct bfd_link_info *info,
2406 elf_linker_section_t *lsect)
2408 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2411 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2412 | SEC_LINKER_CREATED);
2414 /* Record the first bfd that needs the special sections. */
2415 if (!htab->elf.dynobj)
2416 htab->elf.dynobj = abfd;
2418 s = bfd_make_section_anyway (htab->elf.dynobj, lsect->name);
2420 || !bfd_set_section_flags (htab->elf.dynobj, s, flags)
2421 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2428 /* Find a linker generated pointer with a given addend and type. */
2430 static elf_linker_section_pointers_t *
2431 elf_find_pointer_linker_section
2432 (elf_linker_section_pointers_t *linker_pointers,
2434 elf_linker_section_t *lsect)
2436 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2437 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2438 return linker_pointers;
2443 /* Allocate a pointer to live in a linker created section. */
2446 elf_create_pointer_linker_section (bfd *abfd,
2447 elf_linker_section_t *lsect,
2448 struct elf_link_hash_entry *h,
2449 const Elf_Internal_Rela *rel)
2451 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2452 elf_linker_section_pointers_t *linker_section_ptr;
2453 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2456 BFD_ASSERT (lsect != NULL);
2458 /* Is this a global symbol? */
2461 struct ppc_elf_link_hash_entry *eh;
2463 /* Has this symbol already been allocated? If so, our work is done. */
2464 eh = (struct ppc_elf_link_hash_entry *) h;
2465 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2470 ptr_linker_section_ptr = &eh->linker_section_pointer;
2474 /* Allocation of a pointer to a local symbol. */
2475 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2477 /* Allocate a table to hold the local symbols if first time. */
2480 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2483 amt *= sizeof (elf_linker_section_pointers_t *);
2484 ptr = bfd_zalloc (abfd, amt);
2489 elf_local_ptr_offsets (abfd) = ptr;
2492 /* Has this symbol already been allocated? If so, our work is done. */
2493 if (elf_find_pointer_linker_section (ptr[r_symndx],
2498 ptr_linker_section_ptr = &ptr[r_symndx];
2501 /* Allocate space for a pointer in the linker section, and allocate
2502 a new pointer record from internal memory. */
2503 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2504 amt = sizeof (elf_linker_section_pointers_t);
2505 linker_section_ptr = bfd_alloc (abfd, amt);
2507 if (!linker_section_ptr)
2510 linker_section_ptr->next = *ptr_linker_section_ptr;
2511 linker_section_ptr->addend = rel->r_addend;
2512 linker_section_ptr->lsect = lsect;
2513 *ptr_linker_section_ptr = linker_section_ptr;
2515 linker_section_ptr->offset = lsect->section->size;
2516 lsect->section->size += 4;
2520 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2521 lsect->name, (long) linker_section_ptr->offset,
2522 (long) lsect->section->size);
2529 update_local_sym_info (bfd *abfd,
2530 Elf_Internal_Shdr *symtab_hdr,
2531 unsigned long r_symndx,
2534 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2535 char *local_got_tls_masks;
2537 if (local_got_refcounts == NULL)
2539 bfd_size_type size = symtab_hdr->sh_info;
2541 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2542 local_got_refcounts = bfd_zalloc (abfd, size);
2543 if (local_got_refcounts == NULL)
2545 elf_local_got_refcounts (abfd) = local_got_refcounts;
2548 local_got_refcounts[r_symndx] += 1;
2549 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2550 local_got_tls_masks[r_symndx] |= tls_type;
2555 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2557 (*_bfd_error_handler)
2558 (_("%B: relocation %s cannot be used when making a shared object"),
2560 ppc_elf_howto_table[r_type]->name);
2561 bfd_set_error (bfd_error_bad_value);
2564 /* Look through the relocs for a section during the first phase, and
2565 allocate space in the global offset table or procedure linkage
2569 ppc_elf_check_relocs (bfd *abfd,
2570 struct bfd_link_info *info,
2572 const Elf_Internal_Rela *relocs)
2574 struct ppc_elf_link_hash_table *htab;
2575 Elf_Internal_Shdr *symtab_hdr;
2576 struct elf_link_hash_entry **sym_hashes;
2577 const Elf_Internal_Rela *rel;
2578 const Elf_Internal_Rela *rel_end;
2581 if (info->relocatable)
2584 /* Don't do anything special with non-loaded, non-alloced sections.
2585 In particular, any relocs in such sections should not affect GOT
2586 and PLT reference counting (ie. we don't allow them to create GOT
2587 or PLT entries), there's no possibility or desire to optimize TLS
2588 relocs, and there's not much point in propagating relocs to shared
2589 libs that the dynamic linker won't relocate. */
2590 if ((sec->flags & SEC_ALLOC) == 0)
2594 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2598 /* Initialize howto table if not already done. */
2599 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2600 ppc_elf_howto_init ();
2602 htab = ppc_elf_hash_table (info);
2603 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2604 sym_hashes = elf_sym_hashes (abfd);
2607 rel_end = relocs + sec->reloc_count;
2608 for (rel = relocs; rel < rel_end; rel++)
2610 unsigned long r_symndx;
2611 enum elf_ppc_reloc_type r_type;
2612 struct elf_link_hash_entry *h;
2615 r_symndx = ELF32_R_SYM (rel->r_info);
2616 if (r_symndx < symtab_hdr->sh_info)
2619 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2621 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2622 This shows up in particular in an R_PPC_ADDR32 in the eabi
2624 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2626 if (htab->got == NULL)
2628 if (htab->elf.dynobj == NULL)
2629 htab->elf.dynobj = abfd;
2630 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2635 r_type = ELF32_R_TYPE (rel->r_info);
2638 case R_PPC_GOT_TLSLD16:
2639 case R_PPC_GOT_TLSLD16_LO:
2640 case R_PPC_GOT_TLSLD16_HI:
2641 case R_PPC_GOT_TLSLD16_HA:
2642 htab->tlsld_got.refcount += 1;
2643 tls_type = TLS_TLS | TLS_LD;
2646 case R_PPC_GOT_TLSGD16:
2647 case R_PPC_GOT_TLSGD16_LO:
2648 case R_PPC_GOT_TLSGD16_HI:
2649 case R_PPC_GOT_TLSGD16_HA:
2650 tls_type = TLS_TLS | TLS_GD;
2653 case R_PPC_GOT_TPREL16:
2654 case R_PPC_GOT_TPREL16_LO:
2655 case R_PPC_GOT_TPREL16_HI:
2656 case R_PPC_GOT_TPREL16_HA:
2658 info->flags |= DF_STATIC_TLS;
2659 tls_type = TLS_TLS | TLS_TPREL;
2662 case R_PPC_GOT_DTPREL16:
2663 case R_PPC_GOT_DTPREL16_LO:
2664 case R_PPC_GOT_DTPREL16_HI:
2665 case R_PPC_GOT_DTPREL16_HA:
2666 tls_type = TLS_TLS | TLS_DTPREL;
2668 sec->has_tls_reloc = 1;
2671 /* GOT16 relocations */
2673 case R_PPC_GOT16_LO:
2674 case R_PPC_GOT16_HI:
2675 case R_PPC_GOT16_HA:
2676 /* This symbol requires a global offset table entry. */
2677 if (htab->got == NULL)
2679 if (htab->elf.dynobj == NULL)
2680 htab->elf.dynobj = abfd;
2681 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2686 h->got.refcount += 1;
2687 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2690 /* This is a global offset table entry for a local symbol. */
2691 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2695 /* Indirect .sdata relocation. */
2696 case R_PPC_EMB_SDAI16:
2699 bad_shared_reloc (abfd, r_type);
2702 if (htab->sdata[0].section == NULL
2703 && !ppc_elf_create_linker_section (abfd, info, 0,
2706 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
2711 /* Indirect .sdata2 relocation. */
2712 case R_PPC_EMB_SDA2I16:
2715 bad_shared_reloc (abfd, r_type);
2718 if (htab->sdata[1].section == NULL
2719 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
2722 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
2727 case R_PPC_SDAREL16:
2728 case R_PPC_EMB_SDA2REL:
2729 case R_PPC_EMB_SDA21:
2730 case R_PPC_EMB_RELSDA:
2731 case R_PPC_EMB_NADDR32:
2732 case R_PPC_EMB_NADDR16:
2733 case R_PPC_EMB_NADDR16_LO:
2734 case R_PPC_EMB_NADDR16_HI:
2735 case R_PPC_EMB_NADDR16_HA:
2738 bad_shared_reloc (abfd, r_type);
2744 case R_PPC_PLTREL24:
2745 case R_PPC_PLTREL32:
2746 case R_PPC_PLT16_LO:
2747 case R_PPC_PLT16_HI:
2748 case R_PPC_PLT16_HA:
2750 fprintf (stderr, "Reloc requires a PLT entry\n");
2752 /* This symbol requires a procedure linkage table entry. We
2753 actually build the entry in finish_dynamic_symbol,
2754 because this might be a case of linking PIC code without
2755 linking in any dynamic objects, in which case we don't
2756 need to generate a procedure linkage table after all. */
2760 /* It does not make sense to have a procedure linkage
2761 table entry for a local symbol. */
2762 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
2766 (long) rel->r_offset,
2767 ppc_elf_howto_table[r_type]->name);
2768 bfd_set_error (bfd_error_bad_value);
2776 /* The following relocations don't need to propagate the
2777 relocation if linking a shared object since they are
2778 section relative. */
2780 case R_PPC_SECTOFF_LO:
2781 case R_PPC_SECTOFF_HI:
2782 case R_PPC_SECTOFF_HA:
2783 case R_PPC_DTPREL16:
2784 case R_PPC_DTPREL16_LO:
2785 case R_PPC_DTPREL16_HI:
2786 case R_PPC_DTPREL16_HA:
2790 /* This are just markers. */
2792 case R_PPC_EMB_MRKREF:
2797 /* These should only appear in dynamic objects. */
2799 case R_PPC_GLOB_DAT:
2800 case R_PPC_JMP_SLOT:
2801 case R_PPC_RELATIVE:
2804 /* These aren't handled yet. We'll report an error later. */
2806 case R_PPC_EMB_RELSEC16:
2807 case R_PPC_EMB_RELST_LO:
2808 case R_PPC_EMB_RELST_HI:
2809 case R_PPC_EMB_RELST_HA:
2810 case R_PPC_EMB_BIT_FLD:
2813 /* This refers only to functions defined in the shared library. */
2814 case R_PPC_LOCAL24PC:
2817 /* This relocation describes the C++ object vtable hierarchy.
2818 Reconstruct it for later use during GC. */
2819 case R_PPC_GNU_VTINHERIT:
2820 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2824 /* This relocation describes which C++ vtable entries are actually
2825 used. Record for later use during GC. */
2826 case R_PPC_GNU_VTENTRY:
2827 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2831 /* We shouldn't really be seeing these. */
2834 info->flags |= DF_STATIC_TLS;
2838 case R_PPC_DTPMOD32:
2839 case R_PPC_DTPREL32:
2843 case R_PPC_TPREL16_LO:
2844 case R_PPC_TPREL16_HI:
2845 case R_PPC_TPREL16_HA:
2847 info->flags |= DF_STATIC_TLS;
2850 /* When creating a shared object, we must copy these
2851 relocs into the output file. We create a reloc
2852 section in dynobj and make room for the reloc. */
2855 case R_PPC_REL14_BRTAKEN:
2856 case R_PPC_REL14_BRNTAKEN:
2859 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2866 case R_PPC_ADDR16_LO:
2867 case R_PPC_ADDR16_HI:
2868 case R_PPC_ADDR16_HA:
2870 case R_PPC_ADDR14_BRTAKEN:
2871 case R_PPC_ADDR14_BRNTAKEN:
2874 if (h != NULL && !info->shared)
2876 /* We may need a plt entry if the symbol turns out to be
2877 a function defined in a dynamic object. */
2880 /* We may need a copy reloc too. */
2885 /* If we are creating a shared library, and this is a reloc
2886 against a global symbol, or a non PC relative reloc
2887 against a local symbol, then we need to copy the reloc
2888 into the shared library. However, if we are linking with
2889 -Bsymbolic, we do not need to copy a reloc against a
2890 global symbol which is defined in an object we are
2891 including in the link (i.e., DEF_REGULAR is set). At
2892 this point we have not seen all the input files, so it is
2893 possible that DEF_REGULAR is not set now but will be set
2894 later (it is never cleared). In case of a weak definition,
2895 DEF_REGULAR may be cleared later by a strong definition in
2896 a shared library. We account for that possibility below by
2897 storing information in the dyn_relocs field of the hash
2898 table entry. A similar situation occurs when creating
2899 shared libraries and symbol visibility changes render the
2902 If on the other hand, we are creating an executable, we
2903 may need to keep relocations for symbols satisfied by a
2904 dynamic library if we manage to avoid copy relocs for the
2907 && (MUST_BE_DYN_RELOC (r_type)
2909 && (! info->symbolic
2910 || h->root.type == bfd_link_hash_defweak
2911 || !h->def_regular))))
2912 || (ELIMINATE_COPY_RELOCS
2915 && (h->root.type == bfd_link_hash_defweak
2916 || !h->def_regular)))
2918 struct ppc_elf_dyn_relocs *p;
2919 struct ppc_elf_dyn_relocs **head;
2923 "ppc_elf_check_relocs needs to "
2924 "create relocation for %s\n",
2925 (h && h->root.root.string
2926 ? h->root.root.string : "<unknown>"));
2932 name = (bfd_elf_string_from_elf_section
2934 elf_elfheader (abfd)->e_shstrndx,
2935 elf_section_data (sec)->rel_hdr.sh_name));
2939 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2940 && strcmp (bfd_get_section_name (abfd, sec),
2943 if (htab->elf.dynobj == NULL)
2944 htab->elf.dynobj = abfd;
2945 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
2950 sreloc = bfd_make_section (htab->elf.dynobj, name);
2951 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2952 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2953 | SEC_ALLOC | SEC_LOAD);
2955 || ! bfd_set_section_flags (htab->elf.dynobj,
2957 || ! bfd_set_section_alignment (htab->elf.dynobj,
2961 elf_section_data (sec)->sreloc = sreloc;
2964 /* If this is a global symbol, we count the number of
2965 relocations we need for this symbol. */
2968 head = &ppc_elf_hash_entry (h)->dyn_relocs;
2972 /* Track dynamic relocs needed for local syms too.
2973 We really need local syms available to do this
2977 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2982 head = ((struct ppc_elf_dyn_relocs **)
2983 &elf_section_data (s)->local_dynrel);
2987 if (p == NULL || p->sec != sec)
2989 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3000 if (!MUST_BE_DYN_RELOC (r_type))
3011 /* Merge backend specific data from an object file to the output
3012 object file when linking. */
3015 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3021 if (!is_ppc_elf_target (ibfd->xvec)
3022 || !is_ppc_elf_target (obfd->xvec))
3025 /* Check if we have the same endianess. */
3026 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3029 new_flags = elf_elfheader (ibfd)->e_flags;
3030 old_flags = elf_elfheader (obfd)->e_flags;
3031 if (!elf_flags_init (obfd))
3033 /* First call, no flags set. */
3034 elf_flags_init (obfd) = TRUE;
3035 elf_elfheader (obfd)->e_flags = new_flags;
3038 /* Compatible flags are ok. */
3039 else if (new_flags == old_flags)
3042 /* Incompatible flags. */
3045 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3046 to be linked with either. */
3048 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3049 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3052 (*_bfd_error_handler)
3053 (_("%B: compiled with -mrelocatable and linked with "
3054 "modules compiled normally"), ibfd);
3056 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3057 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3060 (*_bfd_error_handler)
3061 (_("%B: compiled normally and linked with "
3062 "modules compiled with -mrelocatable"), ibfd);
3065 /* The output is -mrelocatable-lib iff both the input files are. */
3066 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3067 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3069 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3070 but each input file is either -mrelocatable or -mrelocatable-lib. */
3071 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3072 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3073 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3074 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3076 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3077 any module uses it. */
3078 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3080 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3081 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3083 /* Warn about any other mismatches. */
3084 if (new_flags != old_flags)
3087 (*_bfd_error_handler)
3088 (_("%B: uses different e_flags (0x%lx) fields "
3089 "than previous modules (0x%lx)"),
3090 ibfd, (long) new_flags, (long) old_flags);
3095 bfd_set_error (bfd_error_bad_value);
3103 /* Return the section that should be marked against GC for a given
3107 ppc_elf_gc_mark_hook (asection *sec,
3108 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3109 Elf_Internal_Rela *rel,
3110 struct elf_link_hash_entry *h,
3111 Elf_Internal_Sym *sym)
3115 switch (ELF32_R_TYPE (rel->r_info))
3117 case R_PPC_GNU_VTINHERIT:
3118 case R_PPC_GNU_VTENTRY:
3122 switch (h->root.type)
3124 case bfd_link_hash_defined:
3125 case bfd_link_hash_defweak:
3126 return h->root.u.def.section;
3128 case bfd_link_hash_common:
3129 return h->root.u.c.p->section;
3137 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3142 /* Update the got, plt and dynamic reloc reference counts for the
3143 section being removed. */
3146 ppc_elf_gc_sweep_hook (bfd *abfd,
3147 struct bfd_link_info *info,
3149 const Elf_Internal_Rela *relocs)
3151 struct ppc_elf_link_hash_table *htab;
3152 Elf_Internal_Shdr *symtab_hdr;
3153 struct elf_link_hash_entry **sym_hashes;
3154 bfd_signed_vma *local_got_refcounts;
3155 const Elf_Internal_Rela *rel, *relend;
3157 if ((sec->flags & SEC_ALLOC) == 0)
3160 elf_section_data (sec)->local_dynrel = NULL;
3162 htab = ppc_elf_hash_table (info);
3163 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3164 sym_hashes = elf_sym_hashes (abfd);
3165 local_got_refcounts = elf_local_got_refcounts (abfd);
3167 relend = relocs + sec->reloc_count;
3168 for (rel = relocs; rel < relend; rel++)
3170 unsigned long r_symndx;
3171 enum elf_ppc_reloc_type r_type;
3172 struct elf_link_hash_entry *h = NULL;
3174 r_symndx = ELF32_R_SYM (rel->r_info);
3175 if (r_symndx >= symtab_hdr->sh_info)
3177 struct ppc_elf_dyn_relocs **pp, *p;
3178 struct ppc_elf_link_hash_entry *eh;
3180 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3181 while (h->root.type == bfd_link_hash_indirect
3182 || h->root.type == bfd_link_hash_warning)
3183 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3184 eh = (struct ppc_elf_link_hash_entry *) h;
3186 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3189 /* Everything must go for SEC. */
3195 r_type = ELF32_R_TYPE (rel->r_info);
3198 case R_PPC_GOT_TLSLD16:
3199 case R_PPC_GOT_TLSLD16_LO:
3200 case R_PPC_GOT_TLSLD16_HI:
3201 case R_PPC_GOT_TLSLD16_HA:
3202 htab->tlsld_got.refcount -= 1;
3205 case R_PPC_GOT_TLSGD16:
3206 case R_PPC_GOT_TLSGD16_LO:
3207 case R_PPC_GOT_TLSGD16_HI:
3208 case R_PPC_GOT_TLSGD16_HA:
3209 case R_PPC_GOT_TPREL16:
3210 case R_PPC_GOT_TPREL16_LO:
3211 case R_PPC_GOT_TPREL16_HI:
3212 case R_PPC_GOT_TPREL16_HA:
3213 case R_PPC_GOT_DTPREL16:
3214 case R_PPC_GOT_DTPREL16_LO:
3215 case R_PPC_GOT_DTPREL16_HI:
3216 case R_PPC_GOT_DTPREL16_HA:
3218 case R_PPC_GOT16_LO:
3219 case R_PPC_GOT16_HI:
3220 case R_PPC_GOT16_HA:
3223 if (h->got.refcount > 0)
3226 else if (local_got_refcounts != NULL)
3228 if (local_got_refcounts[r_symndx] > 0)
3229 local_got_refcounts[r_symndx]--;
3235 case R_PPC_REL14_BRTAKEN:
3236 case R_PPC_REL14_BRNTAKEN:
3239 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3246 case R_PPC_ADDR16_LO:
3247 case R_PPC_ADDR16_HI:
3248 case R_PPC_ADDR16_HA:
3250 case R_PPC_ADDR14_BRTAKEN:
3251 case R_PPC_ADDR14_BRNTAKEN:
3255 case R_PPC_PLTREL24:
3256 case R_PPC_PLT16_LO:
3257 case R_PPC_PLT16_HI:
3258 case R_PPC_PLT16_HA:
3261 if (h->plt.refcount > 0)
3273 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3276 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3278 struct ppc_elf_link_hash_table *htab;
3280 htab = ppc_elf_hash_table (info);
3281 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3282 FALSE, FALSE, TRUE);
3284 return _bfd_elf_tls_setup (obfd, info);
3287 /* Run through all the TLS relocs looking for optimization
3291 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3292 struct bfd_link_info *info)
3296 struct ppc_elf_link_hash_table *htab;
3298 if (info->relocatable || info->shared)
3301 htab = ppc_elf_hash_table (info);
3302 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3304 Elf_Internal_Sym *locsyms = NULL;
3305 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3307 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3308 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3310 Elf_Internal_Rela *relstart, *rel, *relend;
3311 int expecting_tls_get_addr;
3313 /* Read the relocations. */
3314 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3316 if (relstart == NULL)
3319 expecting_tls_get_addr = 0;
3320 relend = relstart + sec->reloc_count;
3321 for (rel = relstart; rel < relend; rel++)
3323 enum elf_ppc_reloc_type r_type;
3324 unsigned long r_symndx;
3325 struct elf_link_hash_entry *h = NULL;
3327 char tls_set, tls_clear;
3328 bfd_boolean is_local;
3330 r_symndx = ELF32_R_SYM (rel->r_info);
3331 if (r_symndx >= symtab_hdr->sh_info)
3333 struct elf_link_hash_entry **sym_hashes;
3335 sym_hashes = elf_sym_hashes (ibfd);
3336 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3337 while (h->root.type == bfd_link_hash_indirect
3338 || h->root.type == bfd_link_hash_warning)
3339 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3347 r_type = ELF32_R_TYPE (rel->r_info);
3350 case R_PPC_GOT_TLSLD16:
3351 case R_PPC_GOT_TLSLD16_LO:
3352 case R_PPC_GOT_TLSLD16_HI:
3353 case R_PPC_GOT_TLSLD16_HA:
3354 /* These relocs should never be against a symbol
3355 defined in a shared lib. Leave them alone if
3356 that turns out to be the case. */
3357 expecting_tls_get_addr = 0;
3358 htab->tlsld_got.refcount -= 1;
3365 expecting_tls_get_addr = 1;
3368 case R_PPC_GOT_TLSGD16:
3369 case R_PPC_GOT_TLSGD16_LO:
3370 case R_PPC_GOT_TLSGD16_HI:
3371 case R_PPC_GOT_TLSGD16_HA:
3377 tls_set = TLS_TLS | TLS_TPRELGD;
3379 expecting_tls_get_addr = 1;
3382 case R_PPC_GOT_TPREL16:
3383 case R_PPC_GOT_TPREL16_LO:
3384 case R_PPC_GOT_TPREL16_HI:
3385 case R_PPC_GOT_TPREL16_HA:
3386 expecting_tls_get_addr = 0;
3391 tls_clear = TLS_TPREL;
3398 case R_PPC_REL14_BRTAKEN:
3399 case R_PPC_REL14_BRNTAKEN:
3401 if (expecting_tls_get_addr
3403 && h == htab->tls_get_addr)
3405 if (h->plt.refcount > 0)
3406 h->plt.refcount -= 1;
3408 expecting_tls_get_addr = 0;
3412 expecting_tls_get_addr = 0;
3420 /* We managed to get rid of a got entry. */
3421 if (h->got.refcount > 0)
3422 h->got.refcount -= 1;
3424 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3428 Elf_Internal_Sym *sym;
3429 bfd_signed_vma *lgot_refs;
3432 if (locsyms == NULL)
3434 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3435 if (locsyms == NULL)
3436 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3437 symtab_hdr->sh_info,
3438 0, NULL, NULL, NULL);
3439 if (locsyms == NULL)
3441 if (elf_section_data (sec)->relocs != relstart)
3446 sym = locsyms + r_symndx;
3447 lgot_refs = elf_local_got_refcounts (ibfd);
3448 if (lgot_refs == NULL)
3452 /* We managed to get rid of a got entry. */
3453 if (lgot_refs[r_symndx] > 0)
3454 lgot_refs[r_symndx] -= 1;
3456 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3457 tls_mask = &lgot_masks[r_symndx];
3460 *tls_mask |= tls_set;
3461 *tls_mask &= ~tls_clear;
3464 if (elf_section_data (sec)->relocs != relstart)
3469 && (symtab_hdr->contents != (unsigned char *) locsyms))
3471 if (!info->keep_memory)
3474 symtab_hdr->contents = (unsigned char *) locsyms;
3480 /* Adjust a symbol defined by a dynamic object and referenced by a
3481 regular object. The current definition is in some section of the
3482 dynamic object, but we're not including those sections. We have to
3483 change the definition to something the rest of the link can
3487 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3488 struct elf_link_hash_entry *h)
3490 struct ppc_elf_link_hash_table *htab;
3492 unsigned int power_of_two;
3495 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3496 h->root.root.string);
3499 /* Make sure we know what is going on here. */
3500 htab = ppc_elf_hash_table (info);
3501 BFD_ASSERT (htab->elf.dynobj != NULL
3503 || h->u.weakdef != NULL
3506 && !h->def_regular)));
3508 /* Deal with function syms. */
3509 if (h->type == STT_FUNC
3512 /* Clear procedure linkage table information for any symbol that
3513 won't need a .plt entry. */
3514 if (h->plt.refcount <= 0
3515 || SYMBOL_CALLS_LOCAL (info, h)
3516 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3517 && h->root.type == bfd_link_hash_undefweak))
3519 /* A PLT entry is not required/allowed when:
3521 1. We are not using ld.so; because then the PLT entry
3522 can't be set up, so we can't use one. In this case,
3523 ppc_elf_adjust_dynamic_symbol won't even be called.
3525 2. GC has rendered the entry unused.
3527 3. We know for certain that a call to this symbol
3528 will go to this object, or will remain undefined. */
3529 h->plt.offset = (bfd_vma) -1;
3535 h->plt.offset = (bfd_vma) -1;
3537 /* If this is a weak symbol, and there is a real definition, the
3538 processor independent code will have arranged for us to see the
3539 real definition first, and we can just use the same value. */
3540 if (h->u.weakdef != NULL)
3542 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3543 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3544 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3545 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3546 if (ELIMINATE_COPY_RELOCS)
3547 h->non_got_ref = h->u.weakdef->non_got_ref;
3551 /* This is a reference to a symbol defined by a dynamic object which
3552 is not a function. */
3554 /* If we are creating a shared library, we must presume that the
3555 only references to the symbol are via the global offset table.
3556 For such cases we need not do anything here; the relocations will
3557 be handled correctly by relocate_section. */
3561 /* If there are no references to this symbol that do not use the
3562 GOT, we don't need to generate a copy reloc. */
3563 if (!h->non_got_ref)
3566 if (ELIMINATE_COPY_RELOCS)
3568 struct ppc_elf_dyn_relocs *p;
3569 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3571 s = p->sec->output_section;
3572 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3576 /* If we didn't find any dynamic relocs in read-only sections, then
3577 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3585 /* We must allocate the symbol in our .dynbss section, which will
3586 become part of the .bss section of the executable. There will be
3587 an entry for this symbol in the .dynsym section. The dynamic
3588 object will contain position independent code, so all references
3589 from the dynamic object to this symbol will go through the global
3590 offset table. The dynamic linker will use the .dynsym entry to
3591 determine the address it must put in the global offset table, so
3592 both the dynamic object and the regular object will refer to the
3593 same memory location for the variable.
3595 Of course, if the symbol is sufficiently small, we must instead
3596 allocate it in .sbss. FIXME: It would be better to do this if and
3597 only if there were actually SDAREL relocs for that symbol. */
3599 if (h->size <= elf_gp_size (htab->elf.dynobj))
3603 BFD_ASSERT (s != NULL);
3605 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3606 copy the initial value out of the dynamic object and into the
3607 runtime process image. We need to remember the offset into the
3608 .rela.bss section we are going to use. */
3609 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3613 if (h->size <= elf_gp_size (htab->elf.dynobj))
3614 srel = htab->relsbss;
3616 srel = htab->relbss;
3617 BFD_ASSERT (srel != NULL);
3618 srel->size += sizeof (Elf32_External_Rela);
3622 /* We need to figure out the alignment required for this symbol. I
3623 have no idea how ELF linkers handle this. */
3624 power_of_two = bfd_log2 (h->size);
3625 if (power_of_two > 4)
3628 /* Apply the required alignment. */
3629 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3630 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
3632 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
3636 /* Define the symbol as being at this point in the section. */
3637 h->root.u.def.section = s;
3638 h->root.u.def.value = s->size;
3640 /* Increment the section size to make room for the symbol. */
3646 /* Allocate space in associated reloc sections for dynamic relocs. */
3649 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3651 struct bfd_link_info *info = inf;
3652 struct ppc_elf_link_hash_entry *eh;
3653 struct ppc_elf_link_hash_table *htab;
3654 struct ppc_elf_dyn_relocs *p;
3656 if (h->root.type == bfd_link_hash_indirect)
3659 if (h->root.type == bfd_link_hash_warning)
3660 /* When warning symbols are created, they **replace** the "real"
3661 entry in the hash table, thus we never get to see the real
3662 symbol in a hash traversal. So look at it now. */
3663 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3665 htab = ppc_elf_hash_table (info);
3666 if (htab->elf.dynamic_sections_created
3667 && h->plt.refcount > 0)
3669 /* Make sure this symbol is output as a dynamic symbol. */
3670 if (h->dynindx == -1
3671 && !h->forced_local)
3673 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3678 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3680 asection *s = htab->plt;
3682 /* If this is the first .plt entry, make room for the special
3685 s->size += PLT_INITIAL_ENTRY_SIZE;
3687 /* The PowerPC PLT is actually composed of two parts, the
3688 first part is 2 words (for a load and a jump), and then
3689 there is a remaining word available at the end. */
3690 h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
3692 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
3693 / PLT_ENTRY_SIZE)));
3695 /* If this symbol is not defined in a regular file, and we
3696 are not generating a shared library, then set the symbol
3697 to this location in the .plt. This is required to make
3698 function pointers compare as equal between the normal
3699 executable and the shared library. */
3703 h->root.u.def.section = s;
3704 h->root.u.def.value = h->plt.offset;
3707 /* Make room for this entry. After the 8192nd entry, room
3708 for two entries is allocated. */
3709 s->size += PLT_ENTRY_SIZE;
3710 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
3711 > PLT_NUM_SINGLE_ENTRIES)
3712 s->size += PLT_ENTRY_SIZE;
3714 /* We also need to make an entry in the .rela.plt section. */
3715 htab->relplt->size += sizeof (Elf32_External_Rela);
3719 h->plt.offset = (bfd_vma) -1;
3725 h->plt.offset = (bfd_vma) -1;
3729 eh = (struct ppc_elf_link_hash_entry *) h;
3730 if (eh->elf.got.refcount > 0)
3732 /* Make sure this symbol is output as a dynamic symbol. */
3733 if (eh->elf.dynindx == -1
3734 && !eh->elf.forced_local)
3736 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
3740 if (eh->tls_mask == (TLS_TLS | TLS_LD)
3741 && !eh->elf.def_dynamic)
3742 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3743 eh->elf.got.offset = (bfd_vma) -1;
3747 eh->elf.got.offset = htab->got->size;
3748 if ((eh->tls_mask & TLS_TLS) != 0)
3750 if ((eh->tls_mask & TLS_LD) != 0)
3751 htab->got->size += 8;
3752 if ((eh->tls_mask & TLS_GD) != 0)
3753 htab->got->size += 8;
3754 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3755 htab->got->size += 4;
3756 if ((eh->tls_mask & TLS_DTPREL) != 0)
3757 htab->got->size += 4;
3760 htab->got->size += 4;
3761 dyn = htab->elf.dynamic_sections_created;
3763 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
3764 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
3765 || eh->elf.root.type != bfd_link_hash_undefweak))
3767 /* All the entries we allocated need relocs. */
3769 += ((htab->got->size - eh->elf.got.offset) / 4
3770 * sizeof (Elf32_External_Rela));
3771 /* Except LD only needs one. */
3772 if ((eh->tls_mask & TLS_LD) != 0)
3773 htab->relgot->size -= sizeof (Elf32_External_Rela);
3778 eh->elf.got.offset = (bfd_vma) -1;
3780 if (eh->dyn_relocs == NULL)
3783 /* In the shared -Bsymbolic case, discard space allocated for
3784 dynamic pc-relative relocs against symbols which turn out to be
3785 defined in regular objects. For the normal shared case, discard
3786 space for relocs that have become local due to symbol visibility
3791 /* Relocs that use pc_count are those that appear on a call insn,
3792 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3793 generated via assembly. We want calls to protected symbols to
3794 resolve directly to the function rather than going via the plt.
3795 If people want function pointer comparisons to work as expected
3796 then they should avoid writing weird assembly. */
3797 if (SYMBOL_CALLS_LOCAL (info, h))
3799 struct ppc_elf_dyn_relocs **pp;
3801 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3803 p->count -= p->pc_count;
3812 /* Also discard relocs on undefined weak syms with non-default
3814 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3815 && h->root.type == bfd_link_hash_undefweak)
3816 eh->dyn_relocs = NULL;
3818 /* Make sure undefined weak symbols are output as a dynamic symbol
3821 && eh->dyn_relocs != NULL
3823 && h->root.type == bfd_link_hash_undefweak
3824 && !h->forced_local)
3826 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3830 else if (ELIMINATE_COPY_RELOCS)
3832 /* For the non-shared case, discard space for relocs against
3833 symbols which turn out to need copy relocs or are not
3840 /* Make sure this symbol is output as a dynamic symbol.
3841 Undefined weak syms won't yet be marked as dynamic. */
3842 if (h->dynindx == -1
3843 && !h->forced_local)
3845 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3849 /* If that succeeded, we know we'll be keeping all the
3851 if (h->dynindx != -1)
3855 eh->dyn_relocs = NULL;
3860 /* Finally, allocate space. */
3861 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3863 asection *sreloc = elf_section_data (p->sec)->sreloc;
3864 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3870 /* Find any dynamic relocs that apply to read-only sections. */
3873 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
3875 struct ppc_elf_dyn_relocs *p;
3877 if (h->root.type == bfd_link_hash_indirect)
3880 if (h->root.type == bfd_link_hash_warning)
3881 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3883 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3885 asection *s = p->sec->output_section;
3888 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
3889 == (SEC_READONLY | SEC_ALLOC)))
3891 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
3893 /* Not an error, just cut short the traversal. */
3900 /* Set the sizes of the dynamic sections. */
3903 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3904 struct bfd_link_info *info)
3906 struct ppc_elf_link_hash_table *htab;
3912 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
3915 htab = ppc_elf_hash_table (info);
3916 BFD_ASSERT (htab->elf.dynobj != NULL);
3918 if (elf_hash_table (info)->dynamic_sections_created)
3920 /* Set the contents of the .interp section to the interpreter. */
3921 if (info->executable)
3923 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
3924 BFD_ASSERT (s != NULL);
3925 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3926 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3930 if (htab->tlsld_got.refcount > 0)
3932 htab->tlsld_got.offset = htab->got->size;
3933 htab->got->size += 8;
3935 htab->relgot->size += sizeof (Elf32_External_Rela);
3938 htab->tlsld_got.offset = (bfd_vma) -1;
3940 /* Set up .got offsets for local syms, and space for local dynamic
3942 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3944 bfd_signed_vma *local_got;
3945 bfd_signed_vma *end_local_got;
3947 bfd_size_type locsymcount;
3948 Elf_Internal_Shdr *symtab_hdr;
3951 if (!is_ppc_elf_target (ibfd->xvec))
3954 for (s = ibfd->sections; s != NULL; s = s->next)
3956 struct ppc_elf_dyn_relocs *p;
3958 for (p = ((struct ppc_elf_dyn_relocs *)
3959 elf_section_data (s)->local_dynrel);
3963 if (!bfd_is_abs_section (p->sec)
3964 && bfd_is_abs_section (p->sec->output_section))
3966 /* Input section has been discarded, either because
3967 it is a copy of a linkonce section or due to
3968 linker script /DISCARD/, so we'll be discarding
3971 else if (p->count != 0)
3973 elf_section_data (p->sec)->sreloc->size
3974 += p->count * sizeof (Elf32_External_Rela);
3975 if ((p->sec->output_section->flags
3976 & (SEC_READONLY | SEC_ALLOC))
3977 == (SEC_READONLY | SEC_ALLOC))
3978 info->flags |= DF_TEXTREL;
3983 local_got = elf_local_got_refcounts (ibfd);
3987 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3988 locsymcount = symtab_hdr->sh_info;
3989 end_local_got = local_got + locsymcount;
3990 lgot_masks = (char *) end_local_got;
3992 srel = htab->relgot;
3993 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
3996 if (*lgot_masks == (TLS_TLS | TLS_LD))
3998 /* If just an LD reloc, we'll just use
3999 htab->tlsld_got.offset. */
4000 if (htab->tlsld_got.offset == (bfd_vma) -1)
4002 htab->tlsld_got.offset = s->size;
4005 srel->size += sizeof (Elf32_External_Rela);
4007 *local_got = (bfd_vma) -1;
4011 *local_got = s->size;
4012 if ((*lgot_masks & TLS_TLS) != 0)
4014 if ((*lgot_masks & TLS_GD) != 0)
4016 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4018 if ((*lgot_masks & TLS_DTPREL) != 0)
4024 srel->size += ((s->size - *local_got) / 4
4025 * sizeof (Elf32_External_Rela));
4029 *local_got = (bfd_vma) -1;
4032 /* Allocate space for global sym dynamic relocs. */
4033 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4035 /* We've now determined the sizes of the various dynamic sections.
4036 Allocate memory for them. */
4038 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4040 if ((s->flags & SEC_LINKER_CREATED) == 0)
4047 /* Strip this section if we don't need it; see the
4050 else if (s == htab->sdata[0].section
4051 || s == htab->sdata[1].section)
4053 /* Strip these too. */
4055 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4059 /* If we don't need this section, strip it from the
4060 output file. This is mostly to handle .rela.bss and
4061 .rela.plt. We must create both sections in
4062 create_dynamic_sections, because they must be created
4063 before the linker maps input sections to output
4064 sections. The linker does that before
4065 adjust_dynamic_symbol is called, and it is that
4066 function which decides whether anything needs to go
4067 into these sections. */
4071 /* Remember whether there are any relocation sections. */
4074 /* We use the reloc_count field as a counter if we need
4075 to copy relocs into the output file. */
4081 /* It's not one of our sections, so don't allocate space. */
4087 _bfd_strip_section_from_output (info, s);
4091 if (s == htab->sbss)
4094 /* Allocate memory for the section contents. */
4095 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4096 if (s->contents == NULL)
4100 if (htab->elf.dynamic_sections_created)
4102 /* Add some entries to the .dynamic section. We fill in the
4103 values later, in ppc_elf_finish_dynamic_sections, but we
4104 must add the entries now so that we get the correct size for
4105 the .dynamic section. The DT_DEBUG entry is filled in by the
4106 dynamic linker and used by the debugger. */
4107 #define add_dynamic_entry(TAG, VAL) \
4108 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4110 if (info->executable)
4112 if (!add_dynamic_entry (DT_DEBUG, 0))
4116 if (htab->plt != NULL && htab->plt->size != 0)
4118 if (!add_dynamic_entry (DT_PLTGOT, 0)
4119 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4120 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4121 || !add_dynamic_entry (DT_JMPREL, 0))
4127 if (!add_dynamic_entry (DT_RELA, 0)
4128 || !add_dynamic_entry (DT_RELASZ, 0)
4129 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4133 /* If any dynamic relocs apply to a read-only section, then we
4134 need a DT_TEXTREL entry. */
4135 if ((info->flags & DF_TEXTREL) == 0)
4136 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4139 if ((info->flags & DF_TEXTREL) != 0)
4141 if (!add_dynamic_entry (DT_TEXTREL, 0))
4145 #undef add_dynamic_entry
4150 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4152 static const int shared_stub_entry[] =
4154 0x7c0802a6, /* mflr 0 */
4155 0x429f0005, /* bcl 20, 31, .Lxxx */
4156 0x7d6802a6, /* mflr 11 */
4157 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4158 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4159 0x7c0803a6, /* mtlr 0 */
4160 0x7d6903a6, /* mtctr 11 */
4161 0x4e800420, /* bctr */
4164 static const int stub_entry[] =
4166 0x3d600000, /* lis 11,xxx@ha */
4167 0x396b0000, /* addi 11,11,xxx@l */
4168 0x7d6903a6, /* mtctr 11 */
4169 0x4e800420, /* bctr */
4173 ppc_elf_relax_section (bfd *abfd,
4175 struct bfd_link_info *link_info,
4180 struct one_fixup *next;
4186 Elf_Internal_Shdr *symtab_hdr;
4187 bfd_byte *contents = NULL;
4188 Elf_Internal_Sym *isymbuf = NULL;
4189 Elf_Internal_Rela *internal_relocs = NULL;
4190 Elf_Internal_Rela *irel, *irelend;
4191 struct one_fixup *fixups = NULL;
4192 bfd_boolean changed;
4193 struct ppc_elf_link_hash_table *ppc_info;
4194 bfd_size_type trampoff;
4198 /* Nothing to do if there are no relocations, and no need to do
4199 anything with non-alloc sections. */
4200 if ((isec->flags & SEC_ALLOC) == 0
4201 || (isec->flags & SEC_RELOC) == 0
4202 || isec->reloc_count == 0)
4205 trampoff = (isec->size + 3) & (bfd_vma) -4;
4206 /* Space for a branch around any trampolines. */
4209 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4211 /* Get a copy of the native relocations. */
4212 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4213 link_info->keep_memory);
4214 if (internal_relocs == NULL)
4217 ppc_info = ppc_elf_hash_table (link_info);
4218 irelend = internal_relocs + isec->reloc_count;
4220 for (irel = internal_relocs; irel < irelend; irel++)
4222 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4223 bfd_vma symaddr, reladdr, toff, roff;
4225 struct one_fixup *f;
4226 size_t insn_offset = 0;
4227 bfd_vma max_branch_offset, val;
4230 unsigned char sym_type;
4235 case R_PPC_LOCAL24PC:
4236 case R_PPC_PLTREL24:
4237 max_branch_offset = 1 << 25;
4241 case R_PPC_REL14_BRTAKEN:
4242 case R_PPC_REL14_BRNTAKEN:
4243 max_branch_offset = 1 << 15;
4250 /* Get the value of the symbol referred to by the reloc. */
4251 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4253 /* A local symbol. */
4254 Elf_Internal_Sym *isym;
4256 /* Read this BFD's local symbols. */
4257 if (isymbuf == NULL)
4259 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4260 if (isymbuf == NULL)
4261 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4262 symtab_hdr->sh_info, 0,
4267 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4268 if (isym->st_shndx == SHN_UNDEF)
4269 continue; /* We can't do anything with undefined symbols. */
4270 else if (isym->st_shndx == SHN_ABS)
4271 tsec = bfd_abs_section_ptr;
4272 else if (isym->st_shndx == SHN_COMMON)
4273 tsec = bfd_com_section_ptr;
4275 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4277 toff = isym->st_value;
4278 sym_type = ELF_ST_TYPE (isym->st_info);
4282 /* Global symbol handling. */
4284 struct elf_link_hash_entry *h;
4286 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4287 h = elf_sym_hashes (abfd)[indx];
4289 while (h->root.type == bfd_link_hash_indirect
4290 || h->root.type == bfd_link_hash_warning)
4291 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4293 if (r_type == R_PPC_PLTREL24
4294 && ppc_info->plt != NULL
4295 && h->plt.offset != (bfd_vma) -1)
4297 tsec = ppc_info->plt;
4298 toff = h->plt.offset;
4300 else if (h->root.type == bfd_link_hash_defined
4301 || h->root.type == bfd_link_hash_defweak)
4303 tsec = h->root.u.def.section;
4304 toff = h->root.u.def.value;
4312 /* If the branch and target are in the same section, you have
4313 no hope of adding stubs. We'll error out later should the
4318 /* There probably isn't any reason to handle symbols in
4319 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4320 attribute for a code section, and we are only looking at
4321 branches. However, implement it correctly here as a
4322 reference for other target relax_section functions. */
4323 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4325 /* At this stage in linking, no SEC_MERGE symbol has been
4326 adjusted, so all references to such symbols need to be
4327 passed through _bfd_merged_section_offset. (Later, in
4328 relocate_section, all SEC_MERGE symbols *except* for
4329 section symbols have been adjusted.)
4331 gas may reduce relocations against symbols in SEC_MERGE
4332 sections to a relocation against the section symbol when
4333 the original addend was zero. When the reloc is against
4334 a section symbol we should include the addend in the
4335 offset passed to _bfd_merged_section_offset, since the
4336 location of interest is the original symbol. On the
4337 other hand, an access to "sym+addend" where "sym" is not
4338 a section symbol should not include the addend; Such an
4339 access is presumed to be an offset from "sym"; The
4340 location of interest is just "sym". */
4341 if (sym_type == STT_SECTION)
4342 toff += irel->r_addend;
4344 toff = _bfd_merged_section_offset (abfd, &tsec,
4345 elf_section_data (tsec)->sec_info,
4348 if (sym_type != STT_SECTION)
4349 toff += irel->r_addend;
4352 toff += irel->r_addend;
4354 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
4356 roff = irel->r_offset;
4357 reladdr = isec->output_section->vma + isec->output_offset + roff;
4359 /* If the branch is in range, no need to do anything. */
4360 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4363 /* Look for an existing fixup to this address. */
4364 for (f = fixups; f ; f = f->next)
4365 if (f->tsec == tsec && f->toff == toff)
4371 unsigned long stub_rtype;
4373 val = trampoff - roff;
4374 if (val >= max_branch_offset)
4375 /* Oh dear, we can't reach a trampoline. Don't try to add
4376 one. We'll report an error later. */
4379 if (link_info->shared)
4381 size = 4 * ARRAY_SIZE (shared_stub_entry);
4383 stub_rtype = R_PPC_RELAX32PC;
4387 size = 4 * ARRAY_SIZE (stub_entry);
4389 stub_rtype = R_PPC_RELAX32;
4392 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4393 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4395 if (tsec == ppc_info->plt)
4396 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
4398 /* Hijack the old relocation. Since we need two
4399 relocations for this use a "composite" reloc. */
4400 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4402 irel->r_offset = trampoff + insn_offset;
4404 /* Record the fixup so we don't do it again this section. */
4405 f = bfd_malloc (sizeof (*f));
4409 f->trampoff = trampoff;
4416 val = f->trampoff - roff;
4417 if (val >= max_branch_offset)
4420 /* Nop out the reloc, since we're finalizing things here. */
4421 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4424 /* Get the section contents. */
4425 if (contents == NULL)
4427 /* Get cached copy if it exists. */
4428 if (elf_section_data (isec)->this_hdr.contents != NULL)
4429 contents = elf_section_data (isec)->this_hdr.contents;
4432 /* Go get them off disk. */
4433 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4438 /* Fix up the existing branch to hit the trampoline. */
4439 hit_addr = contents + roff;
4443 case R_PPC_LOCAL24PC:
4444 case R_PPC_PLTREL24:
4445 t0 = bfd_get_32 (abfd, hit_addr);
4447 t0 |= val & 0x3fffffc;
4448 bfd_put_32 (abfd, t0, hit_addr);
4452 case R_PPC_REL14_BRTAKEN:
4453 case R_PPC_REL14_BRNTAKEN:
4454 t0 = bfd_get_32 (abfd, hit_addr);
4457 bfd_put_32 (abfd, t0, hit_addr);
4462 /* Write out the trampolines. */
4463 changed = fixups != NULL;
4473 struct one_fixup *f = fixups;
4474 fixups = fixups->next;
4479 contents = bfd_realloc (contents, trampoff);
4480 if (contents == NULL)
4483 isec->size = (isec->size + 3) & (bfd_vma) -4;
4484 /* Branch around the trampolines. */
4485 val = trampoff - isec->size + 0x48000000;
4486 dest = contents + isec->size;
4487 isec->size = trampoff;
4488 bfd_put_32 (abfd, val, dest);
4491 if (link_info->shared)
4493 stub = shared_stub_entry;
4494 size = ARRAY_SIZE (shared_stub_entry);
4499 size = ARRAY_SIZE (stub_entry);
4503 while (dest < contents + trampoff)
4505 bfd_put_32 (abfd, stub[i], dest);
4511 BFD_ASSERT (i == 0);
4515 && symtab_hdr->contents != (unsigned char *) isymbuf)
4517 if (! link_info->keep_memory)
4521 /* Cache the symbols for elf_link_input_bfd. */
4522 symtab_hdr->contents = (unsigned char *) isymbuf;
4526 if (contents != NULL
4527 && elf_section_data (isec)->this_hdr.contents != contents)
4529 if (!changed && !link_info->keep_memory)
4533 /* Cache the section contents for elf_link_input_bfd. */
4534 elf_section_data (isec)->this_hdr.contents = contents;
4538 if (elf_section_data (isec)->relocs != internal_relocs)
4541 free (internal_relocs);
4543 elf_section_data (isec)->relocs = internal_relocs;
4550 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
4552 if (contents != NULL
4553 && elf_section_data (isec)->this_hdr.contents != contents)
4555 if (internal_relocs != NULL
4556 && elf_section_data (isec)->relocs != internal_relocs)
4557 free (internal_relocs);
4561 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
4562 set here rather than via PROVIDE in the default linker script,
4563 because using PROVIDE inside an output section statement results in
4564 unnecessary output sections. Using PROVIDE outside an output section
4565 statement runs the risk of section alignment affecting where the
4569 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
4571 struct ppc_elf_link_hash_table *htab;
4576 htab = ppc_elf_hash_table (info);
4578 for (i = 0; i < 2; i++)
4580 elf_linker_section_t *lsect = &htab->sdata[i];
4584 s = s->output_section;
4586 s = bfd_get_section_by_name (obfd, lsect->name);
4588 s = bfd_get_section_by_name (obfd, lsect->bss_name);
4592 val = s->vma + 32768;
4593 lsect->sym_val = val;
4595 _bfd_elf_provide_symbol (info, lsect->sym_name, val);
4598 s = bfd_get_section_by_name (obfd, ".sbss");
4602 _bfd_elf_provide_symbol (info, "__sbss_start", val);
4603 _bfd_elf_provide_symbol (info, "___sbss_start", val);
4606 _bfd_elf_provide_symbol (info, "__sbss_end", val);
4607 _bfd_elf_provide_symbol (info, "___sbss_end", val);
4611 /* Fill in the address for a pointer generated in a linker section. */
4614 elf_finish_pointer_linker_section (bfd *input_bfd,
4615 elf_linker_section_t *lsect,
4616 struct elf_link_hash_entry *h,
4618 const Elf_Internal_Rela *rel)
4620 elf_linker_section_pointers_t *linker_section_ptr;
4622 BFD_ASSERT (lsect != NULL);
4626 /* Handle global symbol. */
4627 struct ppc_elf_link_hash_entry *eh;
4629 eh = (struct ppc_elf_link_hash_entry *) h;
4630 BFD_ASSERT (eh->elf.def_regular);
4631 linker_section_ptr = eh->linker_section_pointer;
4635 /* Handle local symbol. */
4636 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
4638 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
4639 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
4642 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
4645 BFD_ASSERT (linker_section_ptr != NULL);
4647 /* Offset will always be a multiple of four, so use the bottom bit
4648 as a "written" flag. */
4649 if ((linker_section_ptr->offset & 1) == 0)
4651 bfd_put_32 (lsect->section->owner,
4652 relocation + linker_section_ptr->addend,
4653 lsect->section->contents + linker_section_ptr->offset);
4654 linker_section_ptr->offset += 1;
4657 relocation = (lsect->section->output_offset
4658 + linker_section_ptr->offset - 1
4663 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
4664 lsect->name, (long) relocation, (long) relocation);
4667 /* Subtract out the addend, because it will get added back in by the normal
4669 return relocation - linker_section_ptr->addend;
4672 /* The RELOCATE_SECTION function is called by the ELF backend linker
4673 to handle the relocations for a section.
4675 The relocs are always passed as Rela structures; if the section
4676 actually uses Rel structures, the r_addend field will always be
4679 This function is responsible for adjust the section contents as
4680 necessary, and (if using Rela relocs and generating a
4681 relocatable output file) adjusting the reloc addend as
4684 This function does not have to worry about setting the reloc
4685 address or the reloc symbol index.
4687 LOCAL_SYMS is a pointer to the swapped in local symbols.
4689 LOCAL_SECTIONS is an array giving the section in the input file
4690 corresponding to the st_shndx field of each local symbol.
4692 The global hash table entry for the global symbols can be found
4693 via elf_sym_hashes (input_bfd).
4695 When generating relocatable output, this function must handle
4696 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4697 going to be the section symbol corresponding to the output
4698 section, which means that the addend must be adjusted
4702 ppc_elf_relocate_section (bfd *output_bfd,
4703 struct bfd_link_info *info,
4705 asection *input_section,
4707 Elf_Internal_Rela *relocs,
4708 Elf_Internal_Sym *local_syms,
4709 asection **local_sections)
4711 Elf_Internal_Shdr *symtab_hdr;
4712 struct elf_link_hash_entry **sym_hashes;
4713 struct ppc_elf_link_hash_table *htab;
4714 Elf_Internal_Rela *rel;
4715 Elf_Internal_Rela *relend;
4716 Elf_Internal_Rela outrel;
4718 asection *sreloc = NULL;
4719 bfd_vma *local_got_offsets;
4720 bfd_boolean ret = TRUE;
4723 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
4724 "%ld relocations%s",
4725 input_bfd, input_section,
4726 (long) input_section->reloc_count,
4727 (info->relocatable) ? " (relocatable)" : "");
4730 if (info->relocatable)
4733 /* Initialize howto table if not already done. */
4734 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4735 ppc_elf_howto_init ();
4737 htab = ppc_elf_hash_table (info);
4738 local_got_offsets = elf_local_got_offsets (input_bfd);
4739 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4740 sym_hashes = elf_sym_hashes (input_bfd);
4742 relend = relocs + input_section->reloc_count;
4743 for (; rel < relend; rel++)
4745 enum elf_ppc_reloc_type r_type;
4747 bfd_reloc_status_type r;
4748 Elf_Internal_Sym *sym;
4750 struct elf_link_hash_entry *h;
4751 const char *sym_name;
4752 reloc_howto_type *howto;
4753 unsigned long r_symndx;
4755 bfd_vma branch_bit, insn, from;
4756 bfd_boolean unresolved_reloc;
4758 unsigned int tls_type, tls_mask, tls_gd;
4760 r_type = ELF32_R_TYPE (rel->r_info);
4764 unresolved_reloc = FALSE;
4766 r_symndx = ELF32_R_SYM (rel->r_info);
4768 if (r_symndx < symtab_hdr->sh_info)
4770 sym = local_syms + r_symndx;
4771 sec = local_sections[r_symndx];
4772 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
4774 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4778 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4779 r_symndx, symtab_hdr, sym_hashes,
4781 unresolved_reloc, warned);
4783 sym_name = h->root.root.string;
4786 /* TLS optimizations. Replace instruction sequences and relocs
4787 based on information we collected in tls_optimize. We edit
4788 RELOCS so that --emit-relocs will output something sensible
4789 for the final instruction stream. */
4792 if (IS_PPC_TLS_RELOC (r_type))
4795 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
4796 else if (local_got_offsets != NULL)
4799 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
4800 tls_mask = lgot_masks[r_symndx];
4804 /* Ensure reloc mapping code below stays sane. */
4805 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
4806 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
4807 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
4808 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
4809 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
4810 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
4811 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
4812 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
4819 case R_PPC_GOT_TPREL16:
4820 case R_PPC_GOT_TPREL16_LO:
4822 && (tls_mask & TLS_TPREL) == 0)
4825 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
4827 insn |= 0x3c020000; /* addis 0,2,0 */
4828 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
4829 r_type = R_PPC_TPREL16_HA;
4830 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4836 && (tls_mask & TLS_TPREL) == 0)
4839 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4840 if ((insn & ((31 << 26) | (31 << 11)))
4841 == ((31 << 26) | (2 << 11)))
4842 rtra = insn & ((1 << 26) - (1 << 16));
4843 else if ((insn & ((31 << 26) | (31 << 16)))
4844 == ((31 << 26) | (2 << 16)))
4845 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
4848 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
4851 else if ((insn & (31 << 1)) == 23 << 1
4852 && ((insn & (31 << 6)) < 14 << 6
4853 || ((insn & (31 << 6)) >= 16 << 6
4854 && (insn & (31 << 6)) < 24 << 6)))
4855 /* load and store indexed -> dform. */
4856 insn = (32 | ((insn >> 6) & 31)) << 26;
4857 else if ((insn & (31 << 1)) == 21 << 1
4858 && (insn & (0x1a << 6)) == 0)
4859 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4860 insn = (((58 | ((insn >> 6) & 4)) << 26)
4861 | ((insn >> 6) & 1));
4862 else if ((insn & (31 << 1)) == 21 << 1
4863 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
4865 insn = (58 << 26) | 2;
4869 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4870 r_type = R_PPC_TPREL16_LO;
4871 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4872 /* Was PPC_TLS which sits on insn boundary, now
4873 PPC_TPREL16_LO which is at insn+2. */
4878 case R_PPC_GOT_TLSGD16_HI:
4879 case R_PPC_GOT_TLSGD16_HA:
4880 tls_gd = TLS_TPRELGD;
4881 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4885 case R_PPC_GOT_TLSLD16_HI:
4886 case R_PPC_GOT_TLSLD16_HA:
4887 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4890 if ((tls_mask & tls_gd) != 0)
4891 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4892 + R_PPC_GOT_TPREL16);
4895 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4897 r_type = R_PPC_NONE;
4899 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4903 case R_PPC_GOT_TLSGD16:
4904 case R_PPC_GOT_TLSGD16_LO:
4905 tls_gd = TLS_TPRELGD;
4906 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4907 goto tls_get_addr_check;
4910 case R_PPC_GOT_TLSLD16:
4911 case R_PPC_GOT_TLSLD16_LO:
4912 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4915 if (rel + 1 < relend)
4917 enum elf_ppc_reloc_type r_type2;
4918 unsigned long r_symndx2;
4919 struct elf_link_hash_entry *h2;
4920 bfd_vma insn1, insn2;
4923 /* The next instruction should be a call to
4924 __tls_get_addr. Peek at the reloc to be sure. */
4925 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4926 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4927 if (r_symndx2 < symtab_hdr->sh_info
4928 || (r_type2 != R_PPC_REL14
4929 && r_type2 != R_PPC_REL14_BRTAKEN
4930 && r_type2 != R_PPC_REL14_BRNTAKEN
4931 && r_type2 != R_PPC_REL24
4932 && r_type2 != R_PPC_PLTREL24))
4935 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4936 while (h2->root.type == bfd_link_hash_indirect
4937 || h2->root.type == bfd_link_hash_warning)
4938 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
4939 if (h2 == NULL || h2 != htab->tls_get_addr)
4942 /* OK, it checks out. Replace the call. */
4943 offset = rel[1].r_offset;
4944 insn1 = bfd_get_32 (output_bfd,
4945 contents + rel->r_offset - 2);
4946 if ((tls_mask & tls_gd) != 0)
4949 insn1 &= (1 << 26) - 1;
4950 insn1 |= 32 << 26; /* lwz */
4951 insn2 = 0x7c631214; /* add 3,3,2 */
4952 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
4953 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4954 + R_PPC_GOT_TPREL16);
4955 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4960 insn1 = 0x3c620000; /* addis 3,2,0 */
4961 insn2 = 0x38630000; /* addi 3,3,0 */
4964 /* Was an LD reloc. */
4966 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4967 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
4969 r_type = R_PPC_TPREL16_HA;
4970 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4971 rel[1].r_info = ELF32_R_INFO (r_symndx,
4973 rel[1].r_offset += 2;
4975 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
4976 bfd_put_32 (output_bfd, insn2, contents + offset);
4979 /* We changed the symbol on an LD reloc. Start over
4980 in order to get h, sym, sec etc. right. */
4989 /* Handle other relocations that tweak non-addend part of insn. */
4996 /* Branch taken prediction relocations. */
4997 case R_PPC_ADDR14_BRTAKEN:
4998 case R_PPC_REL14_BRTAKEN:
4999 branch_bit = BRANCH_PREDICT_BIT;
5002 /* Branch not taken prediction relocations. */
5003 case R_PPC_ADDR14_BRNTAKEN:
5004 case R_PPC_REL14_BRNTAKEN:
5005 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5006 insn &= ~BRANCH_PREDICT_BIT;
5009 from = (rel->r_offset
5010 + input_section->output_offset
5011 + input_section->output_section->vma);
5013 /* Invert 'y' bit if not the default. */
5014 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5015 insn ^= BRANCH_PREDICT_BIT;
5017 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5021 addend = rel->r_addend;
5024 if (r_type < R_PPC_max)
5025 howto = ppc_elf_howto_table[r_type];
5029 (*_bfd_error_handler)
5030 (_("%B: unknown relocation type %d for symbol %s"),
5031 input_bfd, (int) r_type, sym_name);
5033 bfd_set_error (bfd_error_bad_value);
5039 case R_PPC_EMB_MRKREF:
5040 case R_PPC_GNU_VTINHERIT:
5041 case R_PPC_GNU_VTENTRY:
5044 /* GOT16 relocations. Like an ADDR16 using the symbol's
5045 address in the GOT as relocation value instead of the
5046 symbol's value itself. Also, create a GOT entry for the
5047 symbol and put the symbol value there. */
5048 case R_PPC_GOT_TLSGD16:
5049 case R_PPC_GOT_TLSGD16_LO:
5050 case R_PPC_GOT_TLSGD16_HI:
5051 case R_PPC_GOT_TLSGD16_HA:
5052 tls_type = TLS_TLS | TLS_GD;
5055 case R_PPC_GOT_TLSLD16:
5056 case R_PPC_GOT_TLSLD16_LO:
5057 case R_PPC_GOT_TLSLD16_HI:
5058 case R_PPC_GOT_TLSLD16_HA:
5059 tls_type = TLS_TLS | TLS_LD;
5062 case R_PPC_GOT_TPREL16:
5063 case R_PPC_GOT_TPREL16_LO:
5064 case R_PPC_GOT_TPREL16_HI:
5065 case R_PPC_GOT_TPREL16_HA:
5066 tls_type = TLS_TLS | TLS_TPREL;
5069 case R_PPC_GOT_DTPREL16:
5070 case R_PPC_GOT_DTPREL16_LO:
5071 case R_PPC_GOT_DTPREL16_HI:
5072 case R_PPC_GOT_DTPREL16_HA:
5073 tls_type = TLS_TLS | TLS_DTPREL;
5077 case R_PPC_GOT16_LO:
5078 case R_PPC_GOT16_HI:
5079 case R_PPC_GOT16_HA:
5082 /* Relocation is to the entry for this symbol in the global
5088 if (htab->got == NULL)
5092 if (tls_type == (TLS_TLS | TLS_LD)
5094 || !h->def_dynamic))
5095 offp = &htab->tlsld_got.offset;
5099 dyn = htab->elf.dynamic_sections_created;
5100 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5102 && SYMBOL_REFERENCES_LOCAL (info, h)))
5103 /* This is actually a static link, or it is a
5104 -Bsymbolic link and the symbol is defined
5105 locally, or the symbol was forced to be local
5106 because of a version file. */
5111 unresolved_reloc = FALSE;
5113 offp = &h->got.offset;
5117 if (local_got_offsets == NULL)
5119 offp = &local_got_offsets[r_symndx];
5122 /* The offset must always be a multiple of 4. We use the
5123 least significant bit to record whether we have already
5124 processed this entry. */
5130 unsigned int tls_m = (tls_mask
5131 & (TLS_LD | TLS_GD | TLS_DTPREL
5132 | TLS_TPREL | TLS_TPRELGD));
5134 if (offp == &htab->tlsld_got.offset)
5140 /* We might have multiple got entries for this sym.
5141 Initialize them all. */
5146 if ((tls_m & TLS_LD) != 0)
5148 tls_ty = TLS_TLS | TLS_LD;
5151 else if ((tls_m & TLS_GD) != 0)
5153 tls_ty = TLS_TLS | TLS_GD;
5156 else if ((tls_m & TLS_DTPREL) != 0)
5158 tls_ty = TLS_TLS | TLS_DTPREL;
5159 tls_m &= ~TLS_DTPREL;
5161 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5163 tls_ty = TLS_TLS | TLS_TPREL;
5167 /* Generate relocs for the dynamic linker. */
5168 if ((info->shared || indx != 0)
5170 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5171 || h->root.type != bfd_link_hash_undefweak))
5173 outrel.r_offset = (htab->got->output_section->vma
5174 + htab->got->output_offset
5176 outrel.r_addend = 0;
5177 if (tls_ty & (TLS_LD | TLS_GD))
5179 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5180 if (tls_ty == (TLS_TLS | TLS_GD))
5182 loc = htab->relgot->contents;
5183 loc += (htab->relgot->reloc_count++
5184 * sizeof (Elf32_External_Rela));
5185 bfd_elf32_swap_reloca_out (output_bfd,
5187 outrel.r_offset += 4;
5189 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5192 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5193 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5194 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5195 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5197 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5199 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5202 outrel.r_addend += relocation;
5203 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5204 outrel.r_addend -= htab->elf.tls_sec->vma;
5206 loc = htab->relgot->contents;
5207 loc += (htab->relgot->reloc_count++
5208 * sizeof (Elf32_External_Rela));
5209 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5212 /* Init the .got section contents if we're not
5213 emitting a reloc. */
5216 bfd_vma value = relocation;
5218 if (tls_ty == (TLS_TLS | TLS_LD))
5220 else if (tls_ty != 0)
5222 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5223 if (tls_ty == (TLS_TLS | TLS_TPREL))
5224 value += DTP_OFFSET - TP_OFFSET;
5226 if (tls_ty == (TLS_TLS | TLS_GD))
5228 bfd_put_32 (output_bfd, value,
5229 htab->got->contents + off + 4);
5233 bfd_put_32 (output_bfd, value,
5234 htab->got->contents + off);
5238 if (tls_ty & (TLS_LD | TLS_GD))
5247 if (off >= (bfd_vma) -2)
5250 if ((tls_type & TLS_TLS) != 0)
5252 if (tls_type != (TLS_TLS | TLS_LD))
5254 if ((tls_mask & TLS_LD) != 0
5256 || !h->def_dynamic))
5258 if (tls_type != (TLS_TLS | TLS_GD))
5260 if ((tls_mask & TLS_GD) != 0)
5262 if (tls_type != (TLS_TLS | TLS_DTPREL))
5264 if ((tls_mask & TLS_DTPREL) != 0)
5271 relocation = htab->got->output_offset + off - 4;
5273 /* Addends on got relocations don't make much sense.
5274 x+off@got is actually x@got+off, and since the got is
5275 generated by a hash table traversal, the value in the
5276 got at entry m+n bears little relation to the entry m. */
5278 (*_bfd_error_handler)
5279 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5282 (long) rel->r_offset,
5288 /* Relocations that need no special processing. */
5289 case R_PPC_LOCAL24PC:
5290 /* It makes no sense to point a local relocation
5291 at a symbol not in this object. */
5292 if (unresolved_reloc)
5294 if (! (*info->callbacks->undefined_symbol) (info,
5295 h->root.root.string,
5305 case R_PPC_DTPREL16:
5306 case R_PPC_DTPREL16_LO:
5307 case R_PPC_DTPREL16_HI:
5308 case R_PPC_DTPREL16_HA:
5309 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5312 /* Relocations that may need to be propagated if this is a shared
5315 case R_PPC_TPREL16_LO:
5316 case R_PPC_TPREL16_HI:
5317 case R_PPC_TPREL16_HA:
5318 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5319 /* The TPREL16 relocs shouldn't really be used in shared
5320 libs as they will result in DT_TEXTREL being set, but
5321 support them anyway. */
5325 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5328 case R_PPC_DTPREL32:
5329 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5332 case R_PPC_DTPMOD32:
5340 case R_PPC_REL14_BRTAKEN:
5341 case R_PPC_REL14_BRNTAKEN:
5342 /* If these relocations are not to a named symbol, they can be
5343 handled right here, no need to bother the dynamic linker. */
5344 if (SYMBOL_REFERENCES_LOCAL (info, h)
5345 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5349 /* Relocations that always need to be propagated if this is a shared
5354 case R_PPC_ADDR16_LO:
5355 case R_PPC_ADDR16_HI:
5356 case R_PPC_ADDR16_HA:
5358 case R_PPC_ADDR14_BRTAKEN:
5359 case R_PPC_ADDR14_BRNTAKEN:
5362 /* r_symndx will be zero only for relocs against symbols
5363 from removed linkonce sections, or sections discarded by
5370 if ((input_section->flags & SEC_ALLOC) == 0)
5376 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5377 || h->root.type != bfd_link_hash_undefweak)
5378 && (MUST_BE_DYN_RELOC (r_type)
5379 || !SYMBOL_CALLS_LOCAL (info, h)))
5380 || (ELIMINATE_COPY_RELOCS
5386 && !h->def_regular))
5391 fprintf (stderr, "ppc_elf_relocate_section needs to "
5392 "create relocation for %s\n",
5393 (h && h->root.root.string
5394 ? h->root.root.string : "<unknown>"));
5397 /* When generating a shared object, these relocations
5398 are copied into the output file to be resolved at run
5404 name = (bfd_elf_string_from_elf_section
5406 elf_elfheader (input_bfd)->e_shstrndx,
5407 elf_section_data (input_section)->rel_hdr.sh_name));
5411 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5412 && strcmp (bfd_get_section_name (input_bfd,
5416 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5417 BFD_ASSERT (sreloc != NULL);
5423 _bfd_elf_section_offset (output_bfd, info, input_section,
5425 if (outrel.r_offset == (bfd_vma) -1
5426 || outrel.r_offset == (bfd_vma) -2)
5427 skip = (int) outrel.r_offset;
5428 outrel.r_offset += (input_section->output_section->vma
5429 + input_section->output_offset);
5432 memset (&outrel, 0, sizeof outrel);
5433 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5435 unresolved_reloc = FALSE;
5436 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5437 outrel.r_addend = rel->r_addend;
5441 outrel.r_addend = relocation + rel->r_addend;
5443 if (r_type == R_PPC_ADDR32)
5444 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5449 if (bfd_is_abs_section (sec))
5451 else if (sec == NULL || sec->owner == NULL)
5453 bfd_set_error (bfd_error_bad_value);
5460 /* We are turning this relocation into one
5461 against a section symbol. It would be
5462 proper to subtract the symbol's value,
5463 osec->vma, from the emitted reloc addend,
5464 but ld.so expects buggy relocs. */
5465 osec = sec->output_section;
5466 indx = elf_section_data (osec)->dynindx;
5467 BFD_ASSERT (indx > 0);
5470 printf ("indx=%d section=%s flags=%08x name=%s\n",
5471 indx, osec->name, osec->flags,
5472 h->root.root.string);
5476 outrel.r_info = ELF32_R_INFO (indx, r_type);
5480 loc = sreloc->contents;
5481 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5482 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5487 /* This reloc will be computed at runtime. We clear the memory
5488 so that it contains predictable value. */
5490 && ((input_section->flags & SEC_ALLOC) != 0
5491 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5493 relocation = howto->pc_relative ? outrel.r_offset : 0;
5500 case R_PPC_RELAX32PC_PLT:
5501 case R_PPC_RELAX32_PLT:
5502 BFD_ASSERT (h != NULL
5503 && h->plt.offset != (bfd_vma) -1
5504 && htab->plt != NULL);
5506 relocation = (htab->plt->output_section->vma
5507 + htab->plt->output_offset
5509 if (r_type == R_PPC_RELAX32_PLT)
5513 case R_PPC_RELAX32PC:
5514 relocation -= (input_section->output_section->vma
5515 + input_section->output_offset
5516 + rel->r_offset - 4);
5525 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
5526 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
5528 /* We're clearing the bits for R_PPC_ADDR16_HA
5529 and R_PPC_ADDR16_LO here. */
5533 /* t0 is HA, t1 is LO */
5534 relocation += addend;
5535 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
5536 t1 |= relocation & 0xffff;
5538 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
5539 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
5543 /* Indirect .sdata relocation. */
5544 case R_PPC_EMB_SDAI16:
5545 BFD_ASSERT (htab->sdata[0].section != NULL);
5547 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
5548 h, relocation, rel);
5551 /* Indirect .sdata2 relocation. */
5552 case R_PPC_EMB_SDA2I16:
5553 BFD_ASSERT (htab->sdata[1].section != NULL);
5555 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
5556 h, relocation, rel);
5559 /* Handle the TOC16 reloc. We want to use the offset within the .got
5560 section, not the actual VMA. This is appropriate when generating
5561 an embedded ELF object, for which the .got section acts like the
5562 AIX .toc section. */
5563 case R_PPC_TOC16: /* phony GOT16 relocations */
5564 BFD_ASSERT (sec != NULL);
5565 BFD_ASSERT (bfd_is_und_section (sec)
5566 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
5567 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
5569 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
5572 case R_PPC_PLTREL24:
5573 /* Relocation is to the entry for this symbol in the
5574 procedure linkage table. */
5575 BFD_ASSERT (h != NULL);
5577 if (h->plt.offset == (bfd_vma) -1
5578 || htab->plt == NULL)
5580 /* We didn't make a PLT entry for this symbol. This
5581 happens when statically linking PIC code, or when
5582 using -Bsymbolic. */
5586 unresolved_reloc = FALSE;
5587 relocation = (htab->plt->output_section->vma
5588 + htab->plt->output_offset
5592 /* Relocate against _SDA_BASE_. */
5593 case R_PPC_SDAREL16:
5597 BFD_ASSERT (sec != NULL);
5598 name = bfd_get_section_name (abfd, sec->output_section);
5599 if (! ((strncmp (name, ".sdata", 6) == 0
5600 && (name[6] == 0 || name[6] == '.'))
5601 || (strncmp (name, ".sbss", 5) == 0
5602 && (name[5] == 0 || name[5] == '.'))))
5604 (*_bfd_error_handler)
5605 (_("%B: the target (%s) of a %s relocation is "
5606 "in the wrong output section (%s)"),
5612 addend -= htab->sdata[0].sym_val;
5616 /* Relocate against _SDA2_BASE_. */
5617 case R_PPC_EMB_SDA2REL:
5621 BFD_ASSERT (sec != NULL);
5622 name = bfd_get_section_name (abfd, sec->output_section);
5623 if (! (strncmp (name, ".sdata2", 7) == 0
5624 || strncmp (name, ".sbss2", 6) == 0))
5626 (*_bfd_error_handler)
5627 (_("%B: the target (%s) of a %s relocation is "
5628 "in the wrong output section (%s)"),
5634 bfd_set_error (bfd_error_bad_value);
5638 addend -= htab->sdata[1].sym_val;
5642 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
5643 case R_PPC_EMB_SDA21:
5644 case R_PPC_EMB_RELSDA:
5649 BFD_ASSERT (sec != NULL);
5650 name = bfd_get_section_name (abfd, sec->output_section);
5651 if (((strncmp (name, ".sdata", 6) == 0
5652 && (name[6] == 0 || name[6] == '.'))
5653 || (strncmp (name, ".sbss", 5) == 0
5654 && (name[5] == 0 || name[5] == '.'))))
5657 addend -= htab->sdata[0].sym_val;
5660 else if (strncmp (name, ".sdata2", 7) == 0
5661 || strncmp (name, ".sbss2", 6) == 0)
5664 addend -= htab->sdata[1].sym_val;
5667 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
5668 || strcmp (name, ".PPC.EMB.sbss0") == 0)
5675 (*_bfd_error_handler)
5676 (_("%B: the target (%s) of a %s relocation is "
5677 "in the wrong output section (%s)"),
5683 bfd_set_error (bfd_error_bad_value);
5688 if (r_type == R_PPC_EMB_SDA21)
5689 { /* fill in register field */
5690 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5691 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
5692 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5697 /* Relocate against the beginning of the section. */
5699 case R_PPC_SECTOFF_LO:
5700 case R_PPC_SECTOFF_HI:
5701 case R_PPC_SECTOFF_HA:
5702 BFD_ASSERT (sec != NULL);
5703 addend -= sec->output_section->vma;
5706 /* Negative relocations. */
5707 case R_PPC_EMB_NADDR32:
5708 case R_PPC_EMB_NADDR16:
5709 case R_PPC_EMB_NADDR16_LO:
5710 case R_PPC_EMB_NADDR16_HI:
5711 case R_PPC_EMB_NADDR16_HA:
5712 addend -= 2 * relocation;
5716 case R_PPC_GLOB_DAT:
5717 case R_PPC_JMP_SLOT:
5718 case R_PPC_RELATIVE:
5720 case R_PPC_PLTREL32:
5721 case R_PPC_PLT16_LO:
5722 case R_PPC_PLT16_HI:
5723 case R_PPC_PLT16_HA:
5725 case R_PPC_EMB_RELSEC16:
5726 case R_PPC_EMB_RELST_LO:
5727 case R_PPC_EMB_RELST_HI:
5728 case R_PPC_EMB_RELST_HA:
5729 case R_PPC_EMB_BIT_FLD:
5730 (*_bfd_error_handler)
5731 (_("%B: relocation %s is not yet supported for symbol %s."),
5736 bfd_set_error (bfd_error_invalid_operation);
5741 /* Do any further special processing. */
5747 case R_PPC_ADDR16_HA:
5748 case R_PPC_GOT16_HA:
5749 case R_PPC_PLT16_HA:
5750 case R_PPC_SECTOFF_HA:
5751 case R_PPC_TPREL16_HA:
5752 case R_PPC_DTPREL16_HA:
5753 case R_PPC_GOT_TLSGD16_HA:
5754 case R_PPC_GOT_TLSLD16_HA:
5755 case R_PPC_GOT_TPREL16_HA:
5756 case R_PPC_GOT_DTPREL16_HA:
5757 case R_PPC_EMB_NADDR16_HA:
5758 case R_PPC_EMB_RELST_HA:
5759 /* It's just possible that this symbol is a weak symbol
5760 that's not actually defined anywhere. In that case,
5761 'sec' would be NULL, and we should leave the symbol
5762 alone (it will be set to zero elsewhere in the link). */
5764 /* Add 0x10000 if sign bit in 0:15 is set.
5765 Bits 0:15 are not used. */
5771 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5772 "offset = %ld, addend = %ld\n",
5777 (long) rel->r_offset,
5781 if (unresolved_reloc
5782 && !((input_section->flags & SEC_DEBUGGING) != 0
5785 (*_bfd_error_handler)
5786 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5789 (long) rel->r_offset,
5795 r = _bfd_final_link_relocate (howto,
5803 if (r != bfd_reloc_ok)
5805 if (sym_name == NULL)
5806 sym_name = "(null)";
5807 if (r == bfd_reloc_overflow)
5812 && h->root.type == bfd_link_hash_undefweak
5813 && howto->pc_relative)
5815 /* Assume this is a call protected by other code that
5816 detect the symbol is undefined. If this is the case,
5817 we can safely ignore the overflow. If not, the
5818 program is hosed anyway, and a little warning isn't
5824 if (! (*info->callbacks->reloc_overflow) (info,
5825 (h ? &h->root : NULL),
5836 (*_bfd_error_handler)
5837 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
5838 input_bfd, input_section,
5839 (long) rel->r_offset, howto->name, sym_name, (int) r);
5846 fprintf (stderr, "\n");
5852 /* Finish up dynamic symbol handling. We set the contents of various
5853 dynamic sections here. */
5856 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
5857 struct bfd_link_info *info,
5858 struct elf_link_hash_entry *h,
5859 Elf_Internal_Sym *sym)
5861 struct ppc_elf_link_hash_table *htab;
5864 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
5865 h->root.root.string);
5868 htab = ppc_elf_hash_table (info);
5869 BFD_ASSERT (htab->elf.dynobj != NULL);
5871 if (h->plt.offset != (bfd_vma) -1)
5873 Elf_Internal_Rela rela;
5875 bfd_vma reloc_index;
5878 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
5881 /* This symbol has an entry in the procedure linkage table. Set
5884 BFD_ASSERT (h->dynindx != -1);
5885 BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
5887 /* We don't need to fill in the .plt. The ppc dynamic linker
5890 /* Fill in the entry in the .rela.plt section. */
5891 rela.r_offset = (htab->plt->output_section->vma
5892 + htab->plt->output_offset
5894 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
5897 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
5898 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
5899 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
5900 loc = (htab->relplt->contents
5901 + reloc_index * sizeof (Elf32_External_Rela));
5902 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5904 if (!h->def_regular)
5906 /* Mark the symbol as undefined, rather than as defined in
5907 the .plt section. Leave the value alone. */
5908 sym->st_shndx = SHN_UNDEF;
5909 /* If the symbol is weak, we do need to clear the value.
5910 Otherwise, the PLT entry would provide a definition for
5911 the symbol even if the symbol wasn't defined anywhere,
5912 and so the symbol would never be NULL. */
5913 if (!h->ref_regular_nonweak)
5921 Elf_Internal_Rela rela;
5924 /* This symbols needs a copy reloc. Set it up. */
5927 fprintf (stderr, ", copy");
5930 BFD_ASSERT (h->dynindx != -1);
5932 if (h->size <= elf_gp_size (htab->elf.dynobj))
5936 BFD_ASSERT (s != NULL);
5938 rela.r_offset = (h->root.u.def.value
5939 + h->root.u.def.section->output_section->vma
5940 + h->root.u.def.section->output_offset);
5941 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
5943 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
5944 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5948 fprintf (stderr, "\n");
5951 /* Mark some specially defined symbols as absolute. */
5952 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
5953 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
5954 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
5955 sym->st_shndx = SHN_ABS;
5960 static enum elf_reloc_type_class
5961 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
5963 switch (ELF32_R_TYPE (rela->r_info))
5965 case R_PPC_RELATIVE:
5966 return reloc_class_relative;
5969 case R_PPC_JMP_SLOT:
5970 return reloc_class_plt;
5972 return reloc_class_copy;
5974 return reloc_class_normal;
5978 /* Finish up the dynamic sections. */
5981 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
5982 struct bfd_link_info *info)
5985 struct ppc_elf_link_hash_table *htab;
5988 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
5991 htab = ppc_elf_hash_table (info);
5992 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
5994 if (htab->elf.dynamic_sections_created)
5996 Elf32_External_Dyn *dyncon, *dynconend;
5998 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6000 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6001 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6002 for (; dyncon < dynconend; dyncon++)
6004 Elf_Internal_Dyn dyn;
6007 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
6013 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6017 dyn.d_un.d_val = htab->relplt->size;
6022 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6029 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6033 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6034 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6037 unsigned char *contents = htab->got->contents;
6038 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
6041 bfd_put_32 (output_bfd, 0, contents + 4);
6043 bfd_put_32 (output_bfd,
6044 sdyn->output_section->vma + sdyn->output_offset,
6047 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6053 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6054 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6055 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6056 #define TARGET_BIG_NAME "elf32-powerpc"
6057 #define ELF_ARCH bfd_arch_powerpc
6058 #define ELF_MACHINE_CODE EM_PPC
6059 #ifdef __QNXTARGET__
6060 #define ELF_MAXPAGESIZE 0x1000
6062 #define ELF_MAXPAGESIZE 0x10000
6064 #define ELF_MINPAGESIZE 0x1000
6065 #define elf_info_to_howto ppc_elf_info_to_howto
6067 #ifdef EM_CYGNUS_POWERPC
6068 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6072 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6075 #define elf_backend_plt_not_loaded 1
6076 #define elf_backend_got_symbol_offset 4
6077 #define elf_backend_can_gc_sections 1
6078 #define elf_backend_can_refcount 1
6079 #define elf_backend_got_header_size 12
6080 #define elf_backend_rela_normal 1
6082 #define bfd_elf32_mkobject ppc_elf_mkobject
6083 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6084 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6085 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6086 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6087 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6089 #define elf_backend_object_p ppc_elf_object_p
6090 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6091 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6092 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6093 #define elf_backend_relocate_section ppc_elf_relocate_section
6094 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6095 #define elf_backend_check_relocs ppc_elf_check_relocs
6096 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6097 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6098 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6099 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6100 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6101 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6102 #define elf_backend_fake_sections ppc_elf_fake_sections
6103 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6104 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6105 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6106 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6107 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6108 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6109 #define elf_backend_write_section ppc_elf_write_section
6110 #define elf_backend_special_sections ppc_elf_special_sections
6111 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6113 #include "elf32-target.h"
projects / external / binutils.git / blob