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 /* whether address was written yet */
1536 bfd_boolean written_address_p;
1537 } elf_linker_section_pointers_t;
1539 struct ppc_elf_obj_tdata
1541 struct elf_obj_tdata elf;
1543 /* A mapping from local symbols to offsets into the various linker
1544 sections added. This is index by the symbol index. */
1545 elf_linker_section_pointers_t **linker_section_pointers;
1548 #define ppc_elf_tdata(bfd) \
1549 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1551 #define elf_local_ptr_offsets(bfd) \
1552 (ppc_elf_tdata (bfd)->linker_section_pointers)
1554 /* Override the generic function because we store some extras. */
1557 ppc_elf_mkobject (bfd *abfd)
1559 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1560 abfd->tdata.any = bfd_zalloc (abfd, amt);
1561 if (abfd->tdata.any == NULL)
1566 /* Fix bad default arch selected for a 32 bit input bfd when the
1567 default is 64 bit. */
1570 ppc_elf_object_p (bfd *abfd)
1572 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1574 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1576 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1578 /* Relies on arch after 64 bit default being 32 bit default. */
1579 abfd->arch_info = abfd->arch_info->next;
1580 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1586 /* Function to set whether a module needs the -mrelocatable bit set. */
1589 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1591 BFD_ASSERT (!elf_flags_init (abfd)
1592 || elf_elfheader (abfd)->e_flags == flags);
1594 elf_elfheader (abfd)->e_flags = flags;
1595 elf_flags_init (abfd) = TRUE;
1599 /* Support for core dump NOTE sections. */
1602 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1607 switch (note->descsz)
1612 case 268: /* Linux/PPC. */
1614 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1617 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1626 /* Make a ".reg/999" section. */
1627 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1628 size, note->descpos + offset);
1632 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1634 switch (note->descsz)
1639 case 128: /* Linux/PPC elf_prpsinfo. */
1640 elf_tdata (abfd)->core_program
1641 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1642 elf_tdata (abfd)->core_command
1643 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1646 /* Note that for some reason, a spurious space is tacked
1647 onto the end of the args in some (at least one anyway)
1648 implementations, so strip it off if it exists. */
1651 char *command = elf_tdata (abfd)->core_command;
1652 int n = strlen (command);
1654 if (0 < n && command[n - 1] == ' ')
1655 command[n - 1] = '\0';
1661 /* Return address for Ith PLT stub in section PLT, for relocation REL
1662 or (bfd_vma) -1 if it should not be included. */
1665 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1666 const asection *plt ATTRIBUTE_UNUSED,
1669 return rel->address;
1672 /* Handle a PowerPC specific section when reading an object file. This
1673 is called when bfd_section_from_shdr finds a section with an unknown
1677 ppc_elf_section_from_shdr (bfd *abfd,
1678 Elf_Internal_Shdr *hdr,
1685 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1688 newsect = hdr->bfd_section;
1689 flags = bfd_get_section_flags (abfd, newsect);
1690 if (hdr->sh_flags & SHF_EXCLUDE)
1691 flags |= SEC_EXCLUDE;
1693 if (hdr->sh_type == SHT_ORDERED)
1694 flags |= SEC_SORT_ENTRIES;
1696 bfd_set_section_flags (abfd, newsect, flags);
1700 /* Set up any other section flags and such that may be necessary. */
1703 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1704 Elf_Internal_Shdr *shdr,
1707 if ((asect->flags & SEC_EXCLUDE) != 0)
1708 shdr->sh_flags |= SHF_EXCLUDE;
1710 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1711 shdr->sh_type = SHT_ORDERED;
1716 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1717 need to bump up the number of section headers. */
1720 ppc_elf_additional_program_headers (bfd *abfd)
1725 s = bfd_get_section_by_name (abfd, ".sbss2");
1726 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1729 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1730 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1736 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1737 .PPC.EMB.sbss0 a normal section, and not a bss section so
1738 that the linker doesn't crater when trying to make more than
1741 static struct bfd_elf_special_section const ppc_elf_special_sections[]=
1743 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1744 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1745 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1746 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1747 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1748 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1749 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1750 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1751 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1752 { NULL, 0, 0, 0, 0 }
1755 /* Very simple linked list structure for recording apuinfo values. */
1756 typedef struct apuinfo_list
1758 struct apuinfo_list *next;
1759 unsigned long value;
1763 static apuinfo_list *head;
1767 apuinfo_list_init (void)
1773 apuinfo_list_add (unsigned long value)
1775 apuinfo_list *entry = head;
1777 while (entry != NULL)
1779 if (entry->value == value)
1781 entry = entry->next;
1784 entry = bfd_malloc (sizeof (* entry));
1788 entry->value = value;
1794 apuinfo_list_length (void)
1796 apuinfo_list *entry;
1797 unsigned long count;
1799 for (entry = head, count = 0;
1801 entry = entry->next)
1807 static inline unsigned long
1808 apuinfo_list_element (unsigned long number)
1810 apuinfo_list * entry;
1814 entry = entry->next)
1817 return entry ? entry->value : 0;
1821 apuinfo_list_finish (void)
1823 apuinfo_list *entry;
1825 for (entry = head; entry;)
1827 apuinfo_list *next = entry->next;
1835 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
1836 #define APUINFO_LABEL "APUinfo"
1838 /* Scan the input BFDs and create a linked list of
1839 the APUinfo values that will need to be emitted. */
1842 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1847 unsigned num_input_sections;
1848 bfd_size_type output_section_size;
1850 unsigned num_entries;
1851 unsigned long offset;
1852 unsigned long length;
1853 const char *error_message = NULL;
1855 if (link_info == NULL)
1858 /* Scan the input bfds, looking for apuinfo sections. */
1859 num_input_sections = 0;
1860 output_section_size = 0;
1862 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
1864 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1867 ++ num_input_sections;
1868 output_section_size += asec->size;
1872 /* We need at least one input sections
1873 in order to make merging worthwhile. */
1874 if (num_input_sections < 1)
1877 /* Just make sure that the output section exists as well. */
1878 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1882 /* Allocate a buffer for the contents of the input sections. */
1883 buffer = bfd_malloc (output_section_size);
1888 apuinfo_list_init ();
1890 /* Read in the input sections contents. */
1891 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
1893 unsigned long datum;
1896 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
1900 length = asec->size;
1903 error_message = _("corrupt or empty %s section in %B");
1907 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
1908 || (bfd_bread (buffer + offset, length, ibfd) != length))
1910 error_message = _("unable to read in %s section from %B");
1914 /* Process the contents of the section. */
1915 ptr = buffer + offset;
1916 error_message = _("corrupt %s section in %B");
1918 /* Verify the contents of the header. Note - we have to
1919 extract the values this way in order to allow for a
1920 host whose endian-ness is different from the target. */
1921 datum = bfd_get_32 (ibfd, ptr);
1922 if (datum != sizeof APUINFO_LABEL)
1925 datum = bfd_get_32 (ibfd, ptr + 8);
1929 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
1932 /* Get the number of bytes used for apuinfo entries. */
1933 datum = bfd_get_32 (ibfd, ptr + 4);
1934 if (datum + 20 != length)
1937 /* Make sure that we do not run off the end of the section. */
1938 if (offset + length > output_section_size)
1941 /* Scan the apuinfo section, building a list of apuinfo numbers. */
1942 for (i = 0; i < datum; i += 4)
1943 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
1945 /* Update the offset. */
1949 error_message = NULL;
1951 /* Compute the size of the output section. */
1952 num_entries = apuinfo_list_length ();
1953 output_section_size = 20 + num_entries * 4;
1955 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1957 if (! bfd_set_section_size (abfd, asec, output_section_size))
1959 error_message = _("warning: unable to set size of %s section in %B");
1965 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
1968 /* Prevent the output section from accumulating the input sections'
1969 contents. We have already stored this in our linked list structure. */
1972 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
1974 bfd_byte *contents ATTRIBUTE_UNUSED)
1976 return (apuinfo_list_length ()
1977 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
1980 /* Finally we can generate the output section. */
1983 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
1988 unsigned num_entries;
1989 bfd_size_type length;
1991 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
1995 if (apuinfo_list_length () == 0)
1998 length = asec->size;
2002 buffer = bfd_malloc (length);
2005 (*_bfd_error_handler)
2006 (_("failed to allocate space for new APUinfo section."));
2010 /* Create the apuinfo header. */
2011 num_entries = apuinfo_list_length ();
2012 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2013 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2014 bfd_put_32 (abfd, 0x2, buffer + 8);
2015 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2018 for (i = 0; i < num_entries; i++)
2020 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2024 if (length != asec->size)
2025 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2027 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2028 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2032 apuinfo_list_finish ();
2035 /* The following functions are specific to the ELF linker, while
2036 functions above are used generally. They appear in this file more
2037 or less in the order in which they are called. eg.
2038 ppc_elf_check_relocs is called early in the link process,
2039 ppc_elf_finish_dynamic_sections is one of the last functions
2042 /* The PPC linker needs to keep track of the number of relocs that it
2043 decides to copy as dynamic relocs in check_relocs for each symbol.
2044 This is so that it can later discard them if they are found to be
2045 unnecessary. We store the information in a field extending the
2046 regular ELF linker hash table. */
2048 struct ppc_elf_dyn_relocs
2050 struct ppc_elf_dyn_relocs *next;
2052 /* The input section of the reloc. */
2055 /* Total number of relocs copied for the input section. */
2056 bfd_size_type count;
2058 /* Number of pc-relative relocs copied for the input section. */
2059 bfd_size_type pc_count;
2062 /* Of those relocs that might be copied as dynamic relocs, this macro
2063 selects those that must be copied when linking a shared library,
2064 even when the symbol is local. */
2066 #define MUST_BE_DYN_RELOC(RTYPE) \
2067 ((RTYPE) != R_PPC_REL24 \
2068 && (RTYPE) != R_PPC_REL14 \
2069 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2070 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2071 && (RTYPE) != R_PPC_REL32)
2073 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2074 copying dynamic variables from a shared lib into an app's dynbss
2075 section, and instead use a dynamic relocation to point into the
2077 #define ELIMINATE_COPY_RELOCS 1
2079 /* PPC ELF linker hash entry. */
2081 struct ppc_elf_link_hash_entry
2083 struct elf_link_hash_entry elf;
2085 /* If this symbol is used in the linker created sections, the processor
2086 specific backend uses this field to map the field into the offset
2087 from the beginning of the section. */
2088 elf_linker_section_pointers_t *linker_section_pointer;
2090 /* Track dynamic relocs copied for this symbol. */
2091 struct ppc_elf_dyn_relocs *dyn_relocs;
2093 /* Contexts in which symbol is used in the GOT (or TOC).
2094 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2095 corresponding relocs are encountered during check_relocs.
2096 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2097 indicate the corresponding GOT entry type is not needed. */
2098 #define TLS_GD 1 /* GD reloc. */
2099 #define TLS_LD 2 /* LD reloc. */
2100 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2101 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2102 #define TLS_TLS 16 /* Any TLS reloc. */
2103 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2107 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2109 /* PPC ELF linker hash table. */
2111 struct ppc_elf_link_hash_table
2113 struct elf_link_hash_table elf;
2115 /* Short-cuts to get to dynamic linker sections. */
2124 elf_linker_section_t sdata[2];
2127 /* Shortcut to .__tls_get_addr. */
2128 struct elf_link_hash_entry *tls_get_addr;
2130 /* TLS local dynamic got entry handling. */
2132 bfd_signed_vma refcount;
2136 /* Small local sym to section mapping cache. */
2137 struct sym_sec_cache sym_sec;
2140 /* Get the PPC ELF linker hash table from a link_info structure. */
2142 #define ppc_elf_hash_table(p) \
2143 ((struct ppc_elf_link_hash_table *) (p)->hash)
2145 /* Create an entry in a PPC ELF linker hash table. */
2147 static struct bfd_hash_entry *
2148 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2149 struct bfd_hash_table *table,
2152 /* Allocate the structure if it has not already been allocated by a
2156 entry = bfd_hash_allocate (table,
2157 sizeof (struct ppc_elf_link_hash_entry));
2162 /* Call the allocation method of the superclass. */
2163 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2166 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2167 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2168 ppc_elf_hash_entry (entry)->tls_mask = 0;
2174 /* Create a PPC ELF linker hash table. */
2176 static struct bfd_link_hash_table *
2177 ppc_elf_link_hash_table_create (bfd *abfd)
2179 struct ppc_elf_link_hash_table *ret;
2181 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2185 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2186 ppc_elf_link_hash_newfunc))
2192 ret->sdata[0].name = ".sdata";
2193 ret->sdata[0].sym_name = "_SDA_BASE_";
2194 ret->sdata[0].bss_name = ".sbss";
2196 ret->sdata[1].name = ".sdata2";
2197 ret->sdata[1].sym_name = "_SDA2_BASE_";
2198 ret->sdata[1].bss_name = ".sbss2";
2200 return &ret->elf.root;
2203 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2206 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2208 struct ppc_elf_link_hash_table *htab;
2212 if (!_bfd_elf_create_got_section (abfd, info))
2215 htab = ppc_elf_hash_table (info);
2216 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2220 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2221 | SEC_LINKER_CREATED);
2222 if (!bfd_set_section_flags (abfd, s, flags))
2225 htab->relgot = bfd_make_section (abfd, ".rela.got");
2227 || ! bfd_set_section_flags (abfd, htab->relgot,
2228 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2229 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2231 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2237 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2238 to output sections (just like _bfd_elf_create_dynamic_sections has
2239 to create .dynbss and .rela.bss). */
2242 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2244 struct ppc_elf_link_hash_table *htab;
2248 htab = ppc_elf_hash_table (info);
2250 if (htab->got == NULL
2251 && !ppc_elf_create_got (abfd, info))
2254 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2257 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2258 | SEC_LINKER_CREATED);
2260 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2261 htab->dynsbss = s = bfd_make_section (abfd, ".dynsbss");
2263 || ! bfd_set_section_flags (abfd, s, SEC_ALLOC | SEC_LINKER_CREATED))
2268 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2269 htab->relsbss = s = bfd_make_section (abfd, ".rela.sbss");
2271 || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
2272 || ! bfd_set_section_alignment (abfd, s, 2))
2276 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2277 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2281 flags = SEC_ALLOC | SEC_CODE | SEC_IN_MEMORY | SEC_LINKER_CREATED;
2282 return bfd_set_section_flags (abfd, s, flags);
2285 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2288 ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed,
2289 struct elf_link_hash_entry *dir,
2290 struct elf_link_hash_entry *ind)
2292 struct ppc_elf_link_hash_entry *edir, *eind;
2294 edir = (struct ppc_elf_link_hash_entry *) dir;
2295 eind = (struct ppc_elf_link_hash_entry *) ind;
2297 if (eind->dyn_relocs != NULL)
2299 if (edir->dyn_relocs != NULL)
2301 struct ppc_elf_dyn_relocs **pp;
2302 struct ppc_elf_dyn_relocs *p;
2304 if (ind->root.type == bfd_link_hash_indirect)
2307 /* Add reloc counts against the weak sym to the strong sym
2308 list. Merge any entries against the same section. */
2309 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2311 struct ppc_elf_dyn_relocs *q;
2313 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2314 if (q->sec == p->sec)
2316 q->pc_count += p->pc_count;
2317 q->count += p->count;
2324 *pp = edir->dyn_relocs;
2327 edir->dyn_relocs = eind->dyn_relocs;
2328 eind->dyn_relocs = NULL;
2331 edir->tls_mask |= eind->tls_mask;
2333 if (ELIMINATE_COPY_RELOCS
2334 && ind->root.type != bfd_link_hash_indirect
2335 && dir->dynamic_adjusted)
2337 /* If called to transfer flags for a weakdef during processing
2338 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2339 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2340 dir->ref_dynamic |= ind->ref_dynamic;
2341 dir->ref_regular |= ind->ref_regular;
2342 dir->ref_regular_nonweak |= ind->ref_regular_nonweak;
2343 dir->needs_plt |= ind->needs_plt;
2346 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
2349 /* Return 1 if target is one of ours. */
2352 is_ppc_elf_target (const struct bfd_target *targ)
2354 extern const bfd_target bfd_elf32_powerpc_vec;
2355 extern const bfd_target bfd_elf32_powerpcle_vec;
2357 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2360 /* Hook called by the linker routine which adds symbols from an object
2361 file. We use it to put .comm items in .sbss, and not .bss. */
2364 ppc_elf_add_symbol_hook (bfd *abfd,
2365 struct bfd_link_info *info,
2366 Elf_Internal_Sym *sym,
2367 const char **namep ATTRIBUTE_UNUSED,
2368 flagword *flagsp ATTRIBUTE_UNUSED,
2372 if (sym->st_shndx == SHN_COMMON
2373 && !info->relocatable
2374 && sym->st_size <= elf_gp_size (abfd)
2375 && is_ppc_elf_target (info->hash->creator))
2377 /* Common symbols less than or equal to -G nn bytes are automatically
2379 struct ppc_elf_link_hash_table *htab;
2381 htab = ppc_elf_hash_table (info);
2382 if (htab->sbss == NULL)
2384 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2386 if (!htab->elf.dynobj)
2387 htab->elf.dynobj = abfd;
2389 htab->sbss = bfd_make_section_anyway (htab->elf.dynobj, ".sbss");
2390 if (htab->sbss == NULL
2391 || ! bfd_set_section_flags (htab->elf.dynobj, htab->sbss, flags))
2396 *valp = sym->st_size;
2402 /* Create a special linker section. */
2405 ppc_elf_create_linker_section (bfd *abfd,
2406 struct bfd_link_info *info,
2408 elf_linker_section_t *lsect)
2410 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2413 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2414 | SEC_LINKER_CREATED);
2416 /* Record the first bfd that needs the special sections. */
2417 if (!htab->elf.dynobj)
2418 htab->elf.dynobj = abfd;
2420 /* See if the section already exists. */
2421 s = bfd_get_section_by_name (htab->elf.dynobj, lsect->name);
2422 if (s == NULL || (s->flags & flags) != flags)
2424 s = bfd_make_section_anyway (htab->elf.dynobj, lsect->name);
2426 || !bfd_set_section_flags (htab->elf.dynobj, s, flags))
2431 if (bfd_get_section_alignment (htab->elf.dynobj, s) < 2
2432 && !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2435 s->size = align_power (s->size, 2);
2438 fprintf (stderr, "Creating section %s, current size = %ld\n",
2439 lsect->name, (long) s->size);
2445 /* Find a linker generated pointer with a given addend and type. */
2447 static elf_linker_section_pointers_t *
2448 elf_find_pointer_linker_section
2449 (elf_linker_section_pointers_t *linker_pointers,
2451 elf_linker_section_t *lsect)
2453 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2454 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2455 return linker_pointers;
2460 /* Allocate a pointer to live in a linker created section. */
2463 elf_create_pointer_linker_section (bfd *abfd,
2464 struct bfd_link_info *info,
2465 elf_linker_section_t *lsect,
2466 struct elf_link_hash_entry *h,
2467 const Elf_Internal_Rela *rel)
2469 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2470 elf_linker_section_pointers_t *linker_section_ptr;
2471 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2474 BFD_ASSERT (lsect != NULL);
2476 /* Is this a global symbol? */
2479 struct ppc_elf_link_hash_entry *eh;
2481 /* Has this symbol already been allocated? If so, our work is done. */
2482 eh = (struct ppc_elf_link_hash_entry *) h;
2483 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2488 ptr_linker_section_ptr = &eh->linker_section_pointer;
2489 /* Make sure this symbol is output as a dynamic symbol. */
2490 if (h->dynindx == -1)
2492 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2498 /* Allocation of a pointer to a local symbol. */
2499 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2501 /* Allocate a table to hold the local symbols if first time. */
2504 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2507 amt *= sizeof (elf_linker_section_pointers_t *);
2508 ptr = bfd_zalloc (abfd, amt);
2513 elf_local_ptr_offsets (abfd) = ptr;
2516 /* Has this symbol already been allocated? If so, our work is done. */
2517 if (elf_find_pointer_linker_section (ptr[r_symndx],
2522 ptr_linker_section_ptr = &ptr[r_symndx];
2525 /* Allocate space for a pointer in the linker section, and allocate
2526 a new pointer record from internal memory. */
2527 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2528 amt = sizeof (elf_linker_section_pointers_t);
2529 linker_section_ptr = bfd_alloc (abfd, amt);
2531 if (!linker_section_ptr)
2534 linker_section_ptr->next = *ptr_linker_section_ptr;
2535 linker_section_ptr->addend = rel->r_addend;
2536 linker_section_ptr->lsect = lsect;
2537 linker_section_ptr->written_address_p = FALSE;
2538 *ptr_linker_section_ptr = linker_section_ptr;
2540 linker_section_ptr->offset = lsect->section->size;
2541 lsect->section->size += 4;
2545 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2546 lsect->name, (long) linker_section_ptr->offset,
2547 (long) lsect->section->size);
2554 update_local_sym_info (bfd *abfd,
2555 Elf_Internal_Shdr *symtab_hdr,
2556 unsigned long r_symndx,
2559 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2560 char *local_got_tls_masks;
2562 if (local_got_refcounts == NULL)
2564 bfd_size_type size = symtab_hdr->sh_info;
2566 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2567 local_got_refcounts = bfd_zalloc (abfd, size);
2568 if (local_got_refcounts == NULL)
2570 elf_local_got_refcounts (abfd) = local_got_refcounts;
2573 local_got_refcounts[r_symndx] += 1;
2574 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2575 local_got_tls_masks[r_symndx] |= tls_type;
2580 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2582 (*_bfd_error_handler)
2583 (_("%B: relocation %s cannot be used when making a shared object"),
2585 ppc_elf_howto_table[r_type]->name);
2586 bfd_set_error (bfd_error_bad_value);
2589 /* Look through the relocs for a section during the first phase, and
2590 allocate space in the global offset table or procedure linkage
2594 ppc_elf_check_relocs (bfd *abfd,
2595 struct bfd_link_info *info,
2597 const Elf_Internal_Rela *relocs)
2599 struct ppc_elf_link_hash_table *htab;
2600 Elf_Internal_Shdr *symtab_hdr;
2601 struct elf_link_hash_entry **sym_hashes;
2602 const Elf_Internal_Rela *rel;
2603 const Elf_Internal_Rela *rel_end;
2606 if (info->relocatable)
2610 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2614 /* Initialize howto table if not already done. */
2615 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2616 ppc_elf_howto_init ();
2618 htab = ppc_elf_hash_table (info);
2619 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2620 sym_hashes = elf_sym_hashes (abfd);
2623 rel_end = relocs + sec->reloc_count;
2624 for (rel = relocs; rel < rel_end; rel++)
2626 unsigned long r_symndx;
2627 enum elf_ppc_reloc_type r_type;
2628 struct elf_link_hash_entry *h;
2631 r_symndx = ELF32_R_SYM (rel->r_info);
2632 if (r_symndx < symtab_hdr->sh_info)
2635 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2637 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2638 This shows up in particular in an R_PPC_ADDR32 in the eabi
2640 if (h && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2642 if (htab->got == NULL)
2644 if (htab->elf.dynobj == NULL)
2645 htab->elf.dynobj = abfd;
2646 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2651 r_type = ELF32_R_TYPE (rel->r_info);
2654 case R_PPC_GOT_TLSLD16:
2655 case R_PPC_GOT_TLSLD16_LO:
2656 case R_PPC_GOT_TLSLD16_HI:
2657 case R_PPC_GOT_TLSLD16_HA:
2658 htab->tlsld_got.refcount += 1;
2659 tls_type = TLS_TLS | TLS_LD;
2662 case R_PPC_GOT_TLSGD16:
2663 case R_PPC_GOT_TLSGD16_LO:
2664 case R_PPC_GOT_TLSGD16_HI:
2665 case R_PPC_GOT_TLSGD16_HA:
2666 tls_type = TLS_TLS | TLS_GD;
2669 case R_PPC_GOT_TPREL16:
2670 case R_PPC_GOT_TPREL16_LO:
2671 case R_PPC_GOT_TPREL16_HI:
2672 case R_PPC_GOT_TPREL16_HA:
2674 info->flags |= DF_STATIC_TLS;
2675 tls_type = TLS_TLS | TLS_TPREL;
2678 case R_PPC_GOT_DTPREL16:
2679 case R_PPC_GOT_DTPREL16_LO:
2680 case R_PPC_GOT_DTPREL16_HI:
2681 case R_PPC_GOT_DTPREL16_HA:
2682 tls_type = TLS_TLS | TLS_DTPREL;
2684 sec->has_tls_reloc = 1;
2687 /* GOT16 relocations */
2689 case R_PPC_GOT16_LO:
2690 case R_PPC_GOT16_HI:
2691 case R_PPC_GOT16_HA:
2692 /* This symbol requires a global offset table entry. */
2693 if (htab->got == NULL)
2695 if (htab->elf.dynobj == NULL)
2696 htab->elf.dynobj = abfd;
2697 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2702 h->got.refcount += 1;
2703 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2706 /* This is a global offset table entry for a local symbol. */
2707 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2711 /* Indirect .sdata relocation. */
2712 case R_PPC_EMB_SDAI16:
2715 bad_shared_reloc (abfd, r_type);
2718 if (htab->sdata[0].section == NULL
2719 && !ppc_elf_create_linker_section (abfd, info, 0,
2722 if (!elf_create_pointer_linker_section (abfd, info,
2723 &htab->sdata[0], h, rel))
2727 /* Indirect .sdata2 relocation. */
2728 case R_PPC_EMB_SDA2I16:
2731 bad_shared_reloc (abfd, r_type);
2734 if (htab->sdata[1].section == NULL
2735 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
2738 if (!elf_create_pointer_linker_section (abfd, info,
2739 &htab->sdata[1], h, rel))
2743 case R_PPC_SDAREL16:
2744 case R_PPC_EMB_SDA2REL:
2745 case R_PPC_EMB_SDA21:
2746 case R_PPC_EMB_RELSDA:
2747 case R_PPC_EMB_NADDR32:
2748 case R_PPC_EMB_NADDR16:
2749 case R_PPC_EMB_NADDR16_LO:
2750 case R_PPC_EMB_NADDR16_HI:
2751 case R_PPC_EMB_NADDR16_HA:
2754 bad_shared_reloc (abfd, r_type);
2760 case R_PPC_PLTREL24:
2761 case R_PPC_PLTREL32:
2762 case R_PPC_PLT16_LO:
2763 case R_PPC_PLT16_HI:
2764 case R_PPC_PLT16_HA:
2766 fprintf (stderr, "Reloc requires a PLT entry\n");
2768 /* This symbol requires a procedure linkage table entry. We
2769 actually build the entry in finish_dynamic_symbol,
2770 because this might be a case of linking PIC code without
2771 linking in any dynamic objects, in which case we don't
2772 need to generate a procedure linkage table after all. */
2776 /* It does not make sense to have a procedure linkage
2777 table entry for a local symbol. */
2778 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
2782 (long) rel->r_offset,
2783 ppc_elf_howto_table[r_type]->name);
2784 bfd_set_error (bfd_error_bad_value);
2792 /* The following relocations don't need to propagate the
2793 relocation if linking a shared object since they are
2794 section relative. */
2796 case R_PPC_SECTOFF_LO:
2797 case R_PPC_SECTOFF_HI:
2798 case R_PPC_SECTOFF_HA:
2799 case R_PPC_DTPREL16:
2800 case R_PPC_DTPREL16_LO:
2801 case R_PPC_DTPREL16_HI:
2802 case R_PPC_DTPREL16_HA:
2806 /* This are just markers. */
2808 case R_PPC_EMB_MRKREF:
2813 /* These should only appear in dynamic objects. */
2815 case R_PPC_GLOB_DAT:
2816 case R_PPC_JMP_SLOT:
2817 case R_PPC_RELATIVE:
2820 /* These aren't handled yet. We'll report an error later. */
2822 case R_PPC_EMB_RELSEC16:
2823 case R_PPC_EMB_RELST_LO:
2824 case R_PPC_EMB_RELST_HI:
2825 case R_PPC_EMB_RELST_HA:
2826 case R_PPC_EMB_BIT_FLD:
2829 /* This refers only to functions defined in the shared library. */
2830 case R_PPC_LOCAL24PC:
2833 /* This relocation describes the C++ object vtable hierarchy.
2834 Reconstruct it for later use during GC. */
2835 case R_PPC_GNU_VTINHERIT:
2836 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2840 /* This relocation describes which C++ vtable entries are actually
2841 used. Record for later use during GC. */
2842 case R_PPC_GNU_VTENTRY:
2843 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2847 /* We shouldn't really be seeing these. */
2850 info->flags |= DF_STATIC_TLS;
2854 case R_PPC_DTPMOD32:
2855 case R_PPC_DTPREL32:
2859 case R_PPC_TPREL16_LO:
2860 case R_PPC_TPREL16_HI:
2861 case R_PPC_TPREL16_HA:
2863 info->flags |= DF_STATIC_TLS;
2866 /* When creating a shared object, we must copy these
2867 relocs into the output file. We create a reloc
2868 section in dynobj and make room for the reloc. */
2871 case R_PPC_REL14_BRTAKEN:
2872 case R_PPC_REL14_BRNTAKEN:
2875 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2882 case R_PPC_ADDR16_LO:
2883 case R_PPC_ADDR16_HI:
2884 case R_PPC_ADDR16_HA:
2886 case R_PPC_ADDR14_BRTAKEN:
2887 case R_PPC_ADDR14_BRNTAKEN:
2890 if (h != NULL && !info->shared)
2892 /* We may need a plt entry if the symbol turns out to be
2893 a function defined in a dynamic object. */
2896 /* We may need a copy reloc too. */
2901 /* If we are creating a shared library, and this is a reloc
2902 against a global symbol, or a non PC relative reloc
2903 against a local symbol, then we need to copy the reloc
2904 into the shared library. However, if we are linking with
2905 -Bsymbolic, we do not need to copy a reloc against a
2906 global symbol which is defined in an object we are
2907 including in the link (i.e., DEF_REGULAR is set). At
2908 this point we have not seen all the input files, so it is
2909 possible that DEF_REGULAR is not set now but will be set
2910 later (it is never cleared). In case of a weak definition,
2911 DEF_REGULAR may be cleared later by a strong definition in
2912 a shared library. We account for that possibility below by
2913 storing information in the dyn_relocs field of the hash
2914 table entry. A similar situation occurs when creating
2915 shared libraries and symbol visibility changes render the
2918 If on the other hand, we are creating an executable, we
2919 may need to keep relocations for symbols satisfied by a
2920 dynamic library if we manage to avoid copy relocs for the
2923 && (MUST_BE_DYN_RELOC (r_type)
2925 && (! info->symbolic
2926 || h->root.type == bfd_link_hash_defweak
2927 || !h->def_regular))))
2928 || (ELIMINATE_COPY_RELOCS
2930 && (sec->flags & SEC_ALLOC) != 0
2932 && (h->root.type == bfd_link_hash_defweak
2933 || !h->def_regular)))
2935 struct ppc_elf_dyn_relocs *p;
2936 struct ppc_elf_dyn_relocs **head;
2940 "ppc_elf_check_relocs needs to "
2941 "create relocation for %s\n",
2942 (h && h->root.root.string
2943 ? h->root.root.string : "<unknown>"));
2949 name = (bfd_elf_string_from_elf_section
2951 elf_elfheader (abfd)->e_shstrndx,
2952 elf_section_data (sec)->rel_hdr.sh_name));
2956 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
2957 && strcmp (bfd_get_section_name (abfd, sec),
2960 if (htab->elf.dynobj == NULL)
2961 htab->elf.dynobj = abfd;
2962 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
2967 sreloc = bfd_make_section (htab->elf.dynobj, name);
2968 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2969 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2970 if ((sec->flags & SEC_ALLOC) != 0)
2971 flags |= SEC_ALLOC | SEC_LOAD;
2973 || ! bfd_set_section_flags (htab->elf.dynobj,
2975 || ! bfd_set_section_alignment (htab->elf.dynobj,
2979 elf_section_data (sec)->sreloc = sreloc;
2982 /* If this is a global symbol, we count the number of
2983 relocations we need for this symbol. */
2986 head = &ppc_elf_hash_entry (h)->dyn_relocs;
2990 /* Track dynamic relocs needed for local syms too.
2991 We really need local syms available to do this
2995 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3000 head = ((struct ppc_elf_dyn_relocs **)
3001 &elf_section_data (s)->local_dynrel);
3005 if (p == NULL || p->sec != sec)
3007 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3018 if (!MUST_BE_DYN_RELOC (r_type))
3029 /* Merge backend specific data from an object file to the output
3030 object file when linking. */
3033 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3039 if (!is_ppc_elf_target (ibfd->xvec)
3040 || !is_ppc_elf_target (obfd->xvec))
3043 /* Check if we have the same endianess. */
3044 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3047 new_flags = elf_elfheader (ibfd)->e_flags;
3048 old_flags = elf_elfheader (obfd)->e_flags;
3049 if (!elf_flags_init (obfd))
3051 /* First call, no flags set. */
3052 elf_flags_init (obfd) = TRUE;
3053 elf_elfheader (obfd)->e_flags = new_flags;
3056 /* Compatible flags are ok. */
3057 else if (new_flags == old_flags)
3060 /* Incompatible flags. */
3063 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3064 to be linked with either. */
3066 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3067 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3070 (*_bfd_error_handler)
3071 (_("%B: compiled with -mrelocatable and linked with "
3072 "modules compiled normally"), ibfd);
3074 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3075 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3078 (*_bfd_error_handler)
3079 (_("%B: compiled normally and linked with "
3080 "modules compiled with -mrelocatable"), ibfd);
3083 /* The output is -mrelocatable-lib iff both the input files are. */
3084 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3085 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3087 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3088 but each input file is either -mrelocatable or -mrelocatable-lib. */
3089 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3090 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3091 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3092 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3094 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3095 any module uses it. */
3096 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3098 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3099 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3101 /* Warn about any other mismatches. */
3102 if (new_flags != old_flags)
3105 (*_bfd_error_handler)
3106 (_("%B: uses different e_flags (0x%lx) fields "
3107 "than previous modules (0x%lx)"),
3108 ibfd, (long) new_flags, (long) old_flags);
3113 bfd_set_error (bfd_error_bad_value);
3121 /* Return the section that should be marked against GC for a given
3125 ppc_elf_gc_mark_hook (asection *sec,
3126 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3127 Elf_Internal_Rela *rel,
3128 struct elf_link_hash_entry *h,
3129 Elf_Internal_Sym *sym)
3133 switch (ELF32_R_TYPE (rel->r_info))
3135 case R_PPC_GNU_VTINHERIT:
3136 case R_PPC_GNU_VTENTRY:
3140 switch (h->root.type)
3142 case bfd_link_hash_defined:
3143 case bfd_link_hash_defweak:
3144 return h->root.u.def.section;
3146 case bfd_link_hash_common:
3147 return h->root.u.c.p->section;
3155 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3160 /* Update the got, plt and dynamic reloc reference counts for the
3161 section being removed. */
3164 ppc_elf_gc_sweep_hook (bfd *abfd,
3165 struct bfd_link_info *info,
3167 const Elf_Internal_Rela *relocs)
3169 struct ppc_elf_link_hash_table *htab;
3170 Elf_Internal_Shdr *symtab_hdr;
3171 struct elf_link_hash_entry **sym_hashes;
3172 bfd_signed_vma *local_got_refcounts;
3173 const Elf_Internal_Rela *rel, *relend;
3175 elf_section_data (sec)->local_dynrel = NULL;
3177 htab = ppc_elf_hash_table (info);
3178 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3179 sym_hashes = elf_sym_hashes (abfd);
3180 local_got_refcounts = elf_local_got_refcounts (abfd);
3182 relend = relocs + sec->reloc_count;
3183 for (rel = relocs; rel < relend; rel++)
3185 unsigned long r_symndx;
3186 enum elf_ppc_reloc_type r_type;
3187 struct elf_link_hash_entry *h = NULL;
3189 r_symndx = ELF32_R_SYM (rel->r_info);
3190 if (r_symndx >= symtab_hdr->sh_info)
3192 struct ppc_elf_dyn_relocs **pp, *p;
3193 struct ppc_elf_link_hash_entry *eh;
3195 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3196 while (h->root.type == bfd_link_hash_indirect
3197 || h->root.type == bfd_link_hash_warning)
3198 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3199 eh = (struct ppc_elf_link_hash_entry *) h;
3201 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3204 /* Everything must go for SEC. */
3210 r_type = ELF32_R_TYPE (rel->r_info);
3213 case R_PPC_GOT_TLSLD16:
3214 case R_PPC_GOT_TLSLD16_LO:
3215 case R_PPC_GOT_TLSLD16_HI:
3216 case R_PPC_GOT_TLSLD16_HA:
3217 htab->tlsld_got.refcount -= 1;
3220 case R_PPC_GOT_TLSGD16:
3221 case R_PPC_GOT_TLSGD16_LO:
3222 case R_PPC_GOT_TLSGD16_HI:
3223 case R_PPC_GOT_TLSGD16_HA:
3224 case R_PPC_GOT_TPREL16:
3225 case R_PPC_GOT_TPREL16_LO:
3226 case R_PPC_GOT_TPREL16_HI:
3227 case R_PPC_GOT_TPREL16_HA:
3228 case R_PPC_GOT_DTPREL16:
3229 case R_PPC_GOT_DTPREL16_LO:
3230 case R_PPC_GOT_DTPREL16_HI:
3231 case R_PPC_GOT_DTPREL16_HA:
3233 case R_PPC_GOT16_LO:
3234 case R_PPC_GOT16_HI:
3235 case R_PPC_GOT16_HA:
3238 if (h->got.refcount > 0)
3241 else if (local_got_refcounts != NULL)
3243 if (local_got_refcounts[r_symndx] > 0)
3244 local_got_refcounts[r_symndx]--;
3250 case R_PPC_REL14_BRTAKEN:
3251 case R_PPC_REL14_BRNTAKEN:
3254 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
3261 case R_PPC_ADDR16_LO:
3262 case R_PPC_ADDR16_HI:
3263 case R_PPC_ADDR16_HA:
3265 case R_PPC_ADDR14_BRTAKEN:
3266 case R_PPC_ADDR14_BRNTAKEN:
3270 case R_PPC_PLTREL24:
3271 case R_PPC_PLT16_LO:
3272 case R_PPC_PLT16_HI:
3273 case R_PPC_PLT16_HA:
3276 if (h->plt.refcount > 0)
3288 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3291 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3293 struct ppc_elf_link_hash_table *htab;
3295 htab = ppc_elf_hash_table (info);
3296 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3297 FALSE, FALSE, TRUE);
3299 return _bfd_elf_tls_setup (obfd, info);
3302 /* Run through all the TLS relocs looking for optimization
3306 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3307 struct bfd_link_info *info)
3311 struct ppc_elf_link_hash_table *htab;
3313 if (info->relocatable || info->shared)
3316 htab = ppc_elf_hash_table (info);
3317 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3319 Elf_Internal_Sym *locsyms = NULL;
3320 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3322 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3323 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3325 Elf_Internal_Rela *relstart, *rel, *relend;
3326 int expecting_tls_get_addr;
3328 /* Read the relocations. */
3329 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3331 if (relstart == NULL)
3334 expecting_tls_get_addr = 0;
3335 relend = relstart + sec->reloc_count;
3336 for (rel = relstart; rel < relend; rel++)
3338 enum elf_ppc_reloc_type r_type;
3339 unsigned long r_symndx;
3340 struct elf_link_hash_entry *h = NULL;
3342 char tls_set, tls_clear;
3343 bfd_boolean is_local;
3345 r_symndx = ELF32_R_SYM (rel->r_info);
3346 if (r_symndx >= symtab_hdr->sh_info)
3348 struct elf_link_hash_entry **sym_hashes;
3350 sym_hashes = elf_sym_hashes (ibfd);
3351 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3352 while (h->root.type == bfd_link_hash_indirect
3353 || h->root.type == bfd_link_hash_warning)
3354 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3362 r_type = ELF32_R_TYPE (rel->r_info);
3365 case R_PPC_GOT_TLSLD16:
3366 case R_PPC_GOT_TLSLD16_LO:
3367 case R_PPC_GOT_TLSLD16_HI:
3368 case R_PPC_GOT_TLSLD16_HA:
3369 /* These relocs should never be against a symbol
3370 defined in a shared lib. Leave them alone if
3371 that turns out to be the case. */
3372 expecting_tls_get_addr = 0;
3373 htab->tlsld_got.refcount -= 1;
3380 expecting_tls_get_addr = 1;
3383 case R_PPC_GOT_TLSGD16:
3384 case R_PPC_GOT_TLSGD16_LO:
3385 case R_PPC_GOT_TLSGD16_HI:
3386 case R_PPC_GOT_TLSGD16_HA:
3392 tls_set = TLS_TLS | TLS_TPRELGD;
3394 expecting_tls_get_addr = 1;
3397 case R_PPC_GOT_TPREL16:
3398 case R_PPC_GOT_TPREL16_LO:
3399 case R_PPC_GOT_TPREL16_HI:
3400 case R_PPC_GOT_TPREL16_HA:
3401 expecting_tls_get_addr = 0;
3406 tls_clear = TLS_TPREL;
3413 case R_PPC_REL14_BRTAKEN:
3414 case R_PPC_REL14_BRNTAKEN:
3416 if (expecting_tls_get_addr
3418 && h == htab->tls_get_addr)
3420 if (h->plt.refcount > 0)
3421 h->plt.refcount -= 1;
3423 expecting_tls_get_addr = 0;
3427 expecting_tls_get_addr = 0;
3435 /* We managed to get rid of a got entry. */
3436 if (h->got.refcount > 0)
3437 h->got.refcount -= 1;
3439 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3443 Elf_Internal_Sym *sym;
3444 bfd_signed_vma *lgot_refs;
3447 if (locsyms == NULL)
3449 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3450 if (locsyms == NULL)
3451 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3452 symtab_hdr->sh_info,
3453 0, NULL, NULL, NULL);
3454 if (locsyms == NULL)
3456 if (elf_section_data (sec)->relocs != relstart)
3461 sym = locsyms + r_symndx;
3462 lgot_refs = elf_local_got_refcounts (ibfd);
3463 if (lgot_refs == NULL)
3467 /* We managed to get rid of a got entry. */
3468 if (lgot_refs[r_symndx] > 0)
3469 lgot_refs[r_symndx] -= 1;
3471 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3472 tls_mask = &lgot_masks[r_symndx];
3475 *tls_mask |= tls_set;
3476 *tls_mask &= ~tls_clear;
3479 if (elf_section_data (sec)->relocs != relstart)
3484 && (symtab_hdr->contents != (unsigned char *) locsyms))
3486 if (!info->keep_memory)
3489 symtab_hdr->contents = (unsigned char *) locsyms;
3495 /* Adjust a symbol defined by a dynamic object and referenced by a
3496 regular object. The current definition is in some section of the
3497 dynamic object, but we're not including those sections. We have to
3498 change the definition to something the rest of the link can
3502 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3503 struct elf_link_hash_entry *h)
3505 struct ppc_elf_link_hash_table *htab;
3507 unsigned int power_of_two;
3510 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3511 h->root.root.string);
3514 /* Make sure we know what is going on here. */
3515 htab = ppc_elf_hash_table (info);
3516 BFD_ASSERT (htab->elf.dynobj != NULL
3518 || h->u.weakdef != NULL
3521 && !h->def_regular)));
3523 /* Deal with function syms. */
3524 if (h->type == STT_FUNC
3527 /* Clear procedure linkage table information for any symbol that
3528 won't need a .plt entry. */
3529 if (h->plt.refcount <= 0
3530 || SYMBOL_CALLS_LOCAL (info, h)
3531 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3532 && h->root.type == bfd_link_hash_undefweak))
3534 /* A PLT entry is not required/allowed when:
3536 1. We are not using ld.so; because then the PLT entry
3537 can't be set up, so we can't use one. In this case,
3538 ppc_elf_adjust_dynamic_symbol won't even be called.
3540 2. GC has rendered the entry unused.
3542 3. We know for certain that a call to this symbol
3543 will go to this object, or will remain undefined. */
3544 h->plt.offset = (bfd_vma) -1;
3550 h->plt.offset = (bfd_vma) -1;
3552 /* If this is a weak symbol, and there is a real definition, the
3553 processor independent code will have arranged for us to see the
3554 real definition first, and we can just use the same value. */
3555 if (h->u.weakdef != NULL)
3557 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3558 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3559 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3560 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3561 if (ELIMINATE_COPY_RELOCS)
3562 h->non_got_ref = h->u.weakdef->non_got_ref;
3566 /* This is a reference to a symbol defined by a dynamic object which
3567 is not a function. */
3569 /* If we are creating a shared library, we must presume that the
3570 only references to the symbol are via the global offset table.
3571 For such cases we need not do anything here; the relocations will
3572 be handled correctly by relocate_section. */
3576 /* If there are no references to this symbol that do not use the
3577 GOT, we don't need to generate a copy reloc. */
3578 if (!h->non_got_ref)
3581 if (ELIMINATE_COPY_RELOCS)
3583 struct ppc_elf_dyn_relocs *p;
3584 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3586 s = p->sec->output_section;
3587 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3591 /* If we didn't find any dynamic relocs in read-only sections, then
3592 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3600 /* We must allocate the symbol in our .dynbss section, which will
3601 become part of the .bss section of the executable. There will be
3602 an entry for this symbol in the .dynsym section. The dynamic
3603 object will contain position independent code, so all references
3604 from the dynamic object to this symbol will go through the global
3605 offset table. The dynamic linker will use the .dynsym entry to
3606 determine the address it must put in the global offset table, so
3607 both the dynamic object and the regular object will refer to the
3608 same memory location for the variable.
3610 Of course, if the symbol is sufficiently small, we must instead
3611 allocate it in .sbss. FIXME: It would be better to do this if and
3612 only if there were actually SDAREL relocs for that symbol. */
3614 if (h->size <= elf_gp_size (htab->elf.dynobj))
3618 BFD_ASSERT (s != NULL);
3620 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3621 copy the initial value out of the dynamic object and into the
3622 runtime process image. We need to remember the offset into the
3623 .rela.bss section we are going to use. */
3624 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3628 if (h->size <= elf_gp_size (htab->elf.dynobj))
3629 srel = htab->relsbss;
3631 srel = htab->relbss;
3632 BFD_ASSERT (srel != NULL);
3633 srel->size += sizeof (Elf32_External_Rela);
3637 /* We need to figure out the alignment required for this symbol. I
3638 have no idea how ELF linkers handle this. */
3639 power_of_two = bfd_log2 (h->size);
3640 if (power_of_two > 4)
3643 /* Apply the required alignment. */
3644 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3645 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
3647 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
3651 /* Define the symbol as being at this point in the section. */
3652 h->root.u.def.section = s;
3653 h->root.u.def.value = s->size;
3655 /* Increment the section size to make room for the symbol. */
3661 /* Allocate space in associated reloc sections for dynamic relocs. */
3664 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
3666 struct bfd_link_info *info = inf;
3667 struct ppc_elf_link_hash_entry *eh;
3668 struct ppc_elf_link_hash_table *htab;
3669 struct ppc_elf_dyn_relocs *p;
3671 if (h->root.type == bfd_link_hash_indirect)
3674 if (h->root.type == bfd_link_hash_warning)
3675 /* When warning symbols are created, they **replace** the "real"
3676 entry in the hash table, thus we never get to see the real
3677 symbol in a hash traversal. So look at it now. */
3678 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3680 htab = ppc_elf_hash_table (info);
3681 if (htab->elf.dynamic_sections_created
3682 && h->plt.refcount > 0)
3684 /* Make sure this symbol is output as a dynamic symbol. */
3685 if (h->dynindx == -1
3686 && !h->forced_local)
3688 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3693 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
3695 asection *s = htab->plt;
3697 /* If this is the first .plt entry, make room for the special
3700 s->size += PLT_INITIAL_ENTRY_SIZE;
3702 /* The PowerPC PLT is actually composed of two parts, the
3703 first part is 2 words (for a load and a jump), and then
3704 there is a remaining word available at the end. */
3705 h->plt.offset = (PLT_INITIAL_ENTRY_SIZE
3707 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
3708 / PLT_ENTRY_SIZE)));
3710 /* If this symbol is not defined in a regular file, and we
3711 are not generating a shared library, then set the symbol
3712 to this location in the .plt. This is required to make
3713 function pointers compare as equal between the normal
3714 executable and the shared library. */
3718 h->root.u.def.section = s;
3719 h->root.u.def.value = h->plt.offset;
3722 /* Make room for this entry. After the 8192nd entry, room
3723 for two entries is allocated. */
3724 s->size += PLT_ENTRY_SIZE;
3725 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
3726 > PLT_NUM_SINGLE_ENTRIES)
3727 s->size += PLT_ENTRY_SIZE;
3729 /* We also need to make an entry in the .rela.plt section. */
3730 htab->relplt->size += sizeof (Elf32_External_Rela);
3734 h->plt.offset = (bfd_vma) -1;
3740 h->plt.offset = (bfd_vma) -1;
3744 eh = (struct ppc_elf_link_hash_entry *) h;
3745 if (eh->elf.got.refcount > 0)
3747 /* Make sure this symbol is output as a dynamic symbol. */
3748 if (eh->elf.dynindx == -1
3749 && !eh->elf.forced_local)
3751 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
3755 if (eh->tls_mask == (TLS_TLS | TLS_LD)
3756 && !eh->elf.def_dynamic)
3757 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
3758 eh->elf.got.offset = (bfd_vma) -1;
3762 eh->elf.got.offset = htab->got->size;
3763 if ((eh->tls_mask & TLS_TLS) != 0)
3765 if ((eh->tls_mask & TLS_LD) != 0)
3766 htab->got->size += 8;
3767 if ((eh->tls_mask & TLS_GD) != 0)
3768 htab->got->size += 8;
3769 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
3770 htab->got->size += 4;
3771 if ((eh->tls_mask & TLS_DTPREL) != 0)
3772 htab->got->size += 4;
3775 htab->got->size += 4;
3776 dyn = htab->elf.dynamic_sections_created;
3778 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
3779 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
3780 || eh->elf.root.type != bfd_link_hash_undefweak))
3782 /* All the entries we allocated need relocs. */
3784 += ((htab->got->size - eh->elf.got.offset) / 4
3785 * sizeof (Elf32_External_Rela));
3786 /* Except LD only needs one. */
3787 if ((eh->tls_mask & TLS_LD) != 0)
3788 htab->relgot->size -= sizeof (Elf32_External_Rela);
3793 eh->elf.got.offset = (bfd_vma) -1;
3795 if (eh->dyn_relocs == NULL)
3798 /* In the shared -Bsymbolic case, discard space allocated for
3799 dynamic pc-relative relocs against symbols which turn out to be
3800 defined in regular objects. For the normal shared case, discard
3801 space for relocs that have become local due to symbol visibility
3806 /* Relocs that use pc_count are those that appear on a call insn,
3807 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
3808 generated via assembly. We want calls to protected symbols to
3809 resolve directly to the function rather than going via the plt.
3810 If people want function pointer comparisons to work as expected
3811 then they should avoid writing weird assembly. */
3812 if (SYMBOL_CALLS_LOCAL (info, h))
3814 struct ppc_elf_dyn_relocs **pp;
3816 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3818 p->count -= p->pc_count;
3827 /* Also discard relocs on undefined weak syms with non-default
3829 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3830 && h->root.type == bfd_link_hash_undefweak)
3831 eh->dyn_relocs = NULL;
3833 /* Make sure undefined weak symbols are output as a dynamic symbol
3836 && eh->dyn_relocs != NULL
3838 && h->root.type == bfd_link_hash_undefweak
3839 && !h->forced_local)
3841 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3845 else if (ELIMINATE_COPY_RELOCS)
3847 /* For the non-shared case, discard space for relocs against
3848 symbols which turn out to need copy relocs or are not
3855 /* Make sure this symbol is output as a dynamic symbol.
3856 Undefined weak syms won't yet be marked as dynamic. */
3857 if (h->dynindx == -1
3858 && !h->forced_local)
3860 if (! bfd_elf_link_record_dynamic_symbol (info, h))
3864 /* If that succeeded, we know we'll be keeping all the
3866 if (h->dynindx != -1)
3870 eh->dyn_relocs = NULL;
3875 /* Finally, allocate space. */
3876 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3878 asection *sreloc = elf_section_data (p->sec)->sreloc;
3879 sreloc->size += p->count * sizeof (Elf32_External_Rela);
3885 /* Find any dynamic relocs that apply to read-only sections. */
3888 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
3890 struct ppc_elf_dyn_relocs *p;
3892 if (h->root.type == bfd_link_hash_indirect)
3895 if (h->root.type == bfd_link_hash_warning)
3896 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3898 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3900 asection *s = p->sec->output_section;
3903 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
3904 == (SEC_READONLY | SEC_ALLOC)))
3906 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
3908 /* Not an error, just cut short the traversal. */
3915 /* Set the sizes of the dynamic sections. */
3918 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3919 struct bfd_link_info *info)
3921 struct ppc_elf_link_hash_table *htab;
3927 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
3930 htab = ppc_elf_hash_table (info);
3931 BFD_ASSERT (htab->elf.dynobj != NULL);
3933 if (elf_hash_table (info)->dynamic_sections_created)
3935 /* Set the contents of the .interp section to the interpreter. */
3936 if (info->executable)
3938 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
3939 BFD_ASSERT (s != NULL);
3940 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3941 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3945 if (htab->tlsld_got.refcount > 0)
3947 htab->tlsld_got.offset = htab->got->size;
3948 htab->got->size += 8;
3950 htab->relgot->size += sizeof (Elf32_External_Rela);
3953 htab->tlsld_got.offset = (bfd_vma) -1;
3955 /* Set up .got offsets for local syms, and space for local dynamic
3957 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3959 bfd_signed_vma *local_got;
3960 bfd_signed_vma *end_local_got;
3962 bfd_size_type locsymcount;
3963 Elf_Internal_Shdr *symtab_hdr;
3966 if (!is_ppc_elf_target (ibfd->xvec))
3969 for (s = ibfd->sections; s != NULL; s = s->next)
3971 struct ppc_elf_dyn_relocs *p;
3973 for (p = ((struct ppc_elf_dyn_relocs *)
3974 elf_section_data (s)->local_dynrel);
3978 if (!bfd_is_abs_section (p->sec)
3979 && bfd_is_abs_section (p->sec->output_section))
3981 /* Input section has been discarded, either because
3982 it is a copy of a linkonce section or due to
3983 linker script /DISCARD/, so we'll be discarding
3986 else if (p->count != 0)
3988 elf_section_data (p->sec)->sreloc->size
3989 += p->count * sizeof (Elf32_External_Rela);
3990 if ((p->sec->output_section->flags
3991 & (SEC_READONLY | SEC_ALLOC))
3992 == (SEC_READONLY | SEC_ALLOC))
3993 info->flags |= DF_TEXTREL;
3998 local_got = elf_local_got_refcounts (ibfd);
4002 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4003 locsymcount = symtab_hdr->sh_info;
4004 end_local_got = local_got + locsymcount;
4005 lgot_masks = (char *) end_local_got;
4007 srel = htab->relgot;
4008 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4011 if (*lgot_masks == (TLS_TLS | TLS_LD))
4013 /* If just an LD reloc, we'll just use
4014 htab->tlsld_got.offset. */
4015 if (htab->tlsld_got.offset == (bfd_vma) -1)
4017 htab->tlsld_got.offset = s->size;
4020 srel->size += sizeof (Elf32_External_Rela);
4022 *local_got = (bfd_vma) -1;
4026 *local_got = s->size;
4027 if ((*lgot_masks & TLS_TLS) != 0)
4029 if ((*lgot_masks & TLS_GD) != 0)
4031 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4033 if ((*lgot_masks & TLS_DTPREL) != 0)
4039 srel->size += ((s->size - *local_got) / 4
4040 * sizeof (Elf32_External_Rela));
4044 *local_got = (bfd_vma) -1;
4047 /* Allocate space for global sym dynamic relocs. */
4048 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4050 /* We've now determined the sizes of the various dynamic sections.
4051 Allocate memory for them. */
4053 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4055 if ((s->flags & SEC_LINKER_CREATED) == 0)
4062 /* Strip this section if we don't need it; see the
4065 else if (s == htab->sdata[0].section
4066 || s == htab->sdata[1].section)
4068 /* Strip these too. */
4070 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4074 /* If we don't need this section, strip it from the
4075 output file. This is mostly to handle .rela.bss and
4076 .rela.plt. We must create both sections in
4077 create_dynamic_sections, because they must be created
4078 before the linker maps input sections to output
4079 sections. The linker does that before
4080 adjust_dynamic_symbol is called, and it is that
4081 function which decides whether anything needs to go
4082 into these sections. */
4086 /* Remember whether there are any relocation sections. */
4089 /* We use the reloc_count field as a counter if we need
4090 to copy relocs into the output file. */
4096 /* It's not one of our sections, so don't allocate space. */
4102 _bfd_strip_section_from_output (info, s);
4106 if (s == htab->sbss)
4109 /* Allocate memory for the section contents. */
4110 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4111 if (s->contents == NULL)
4115 if (htab->elf.dynamic_sections_created)
4117 /* Add some entries to the .dynamic section. We fill in the
4118 values later, in ppc_elf_finish_dynamic_sections, but we
4119 must add the entries now so that we get the correct size for
4120 the .dynamic section. The DT_DEBUG entry is filled in by the
4121 dynamic linker and used by the debugger. */
4122 #define add_dynamic_entry(TAG, VAL) \
4123 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4125 if (info->executable)
4127 if (!add_dynamic_entry (DT_DEBUG, 0))
4131 if (htab->plt != NULL && htab->plt->size != 0)
4133 if (!add_dynamic_entry (DT_PLTGOT, 0)
4134 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4135 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4136 || !add_dynamic_entry (DT_JMPREL, 0))
4142 if (!add_dynamic_entry (DT_RELA, 0)
4143 || !add_dynamic_entry (DT_RELASZ, 0)
4144 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4148 /* If any dynamic relocs apply to a read-only section, then we
4149 need a DT_TEXTREL entry. */
4150 if ((info->flags & DF_TEXTREL) == 0)
4151 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4154 if ((info->flags & DF_TEXTREL) != 0)
4156 if (!add_dynamic_entry (DT_TEXTREL, 0))
4160 #undef add_dynamic_entry
4165 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4167 static const int shared_stub_entry[] =
4169 0x7c0802a6, /* mflr 0 */
4170 0x429f0005, /* bcl 20, 31, .Lxxx */
4171 0x7d6802a6, /* mflr 11 */
4172 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4173 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4174 0x7c0803a6, /* mtlr 0 */
4175 0x7d6903a6, /* mtctr 11 */
4176 0x4e800420, /* bctr */
4179 static const int stub_entry[] =
4181 0x3d600000, /* lis 11,xxx@ha */
4182 0x396b0000, /* addi 11,11,xxx@l */
4183 0x7d6903a6, /* mtctr 11 */
4184 0x4e800420, /* bctr */
4188 ppc_elf_relax_section (bfd *abfd,
4190 struct bfd_link_info *link_info,
4195 struct one_fixup *next;
4201 Elf_Internal_Shdr *symtab_hdr;
4202 bfd_byte *contents = NULL;
4203 Elf_Internal_Sym *isymbuf = NULL;
4204 Elf_Internal_Rela *internal_relocs = NULL;
4205 Elf_Internal_Rela *irel, *irelend;
4206 struct one_fixup *fixups = NULL;
4207 bfd_boolean changed;
4208 struct ppc_elf_link_hash_table *ppc_info;
4209 bfd_size_type trampoff;
4213 /* Nothing to do if there are no relocations. */
4214 if ((isec->flags & SEC_RELOC) == 0 || isec->reloc_count == 0)
4217 trampoff = (isec->size + 3) & (bfd_vma) -4;
4218 /* Space for a branch around any trampolines. */
4221 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4223 /* Get a copy of the native relocations. */
4224 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4225 link_info->keep_memory);
4226 if (internal_relocs == NULL)
4229 ppc_info = ppc_elf_hash_table (link_info);
4230 irelend = internal_relocs + isec->reloc_count;
4232 for (irel = internal_relocs; irel < irelend; irel++)
4234 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4235 bfd_vma symaddr, reladdr, toff, roff;
4237 struct one_fixup *f;
4238 size_t insn_offset = 0;
4239 bfd_vma max_branch_offset, val;
4242 unsigned char sym_type;
4247 case R_PPC_LOCAL24PC:
4248 case R_PPC_PLTREL24:
4249 max_branch_offset = 1 << 25;
4253 case R_PPC_REL14_BRTAKEN:
4254 case R_PPC_REL14_BRNTAKEN:
4255 max_branch_offset = 1 << 15;
4262 /* Get the value of the symbol referred to by the reloc. */
4263 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4265 /* A local symbol. */
4266 Elf_Internal_Sym *isym;
4268 /* Read this BFD's local symbols. */
4269 if (isymbuf == NULL)
4271 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4272 if (isymbuf == NULL)
4273 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4274 symtab_hdr->sh_info, 0,
4279 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4280 if (isym->st_shndx == SHN_UNDEF)
4281 continue; /* We can't do anything with undefined symbols. */
4282 else if (isym->st_shndx == SHN_ABS)
4283 tsec = bfd_abs_section_ptr;
4284 else if (isym->st_shndx == SHN_COMMON)
4285 tsec = bfd_com_section_ptr;
4287 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4289 toff = isym->st_value;
4290 sym_type = ELF_ST_TYPE (isym->st_info);
4294 /* Global symbol handling. */
4296 struct elf_link_hash_entry *h;
4298 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4299 h = elf_sym_hashes (abfd)[indx];
4301 while (h->root.type == bfd_link_hash_indirect
4302 || h->root.type == bfd_link_hash_warning)
4303 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4305 if (r_type == R_PPC_PLTREL24
4306 && ppc_info->plt != NULL
4307 && h->plt.offset != (bfd_vma) -1)
4309 tsec = ppc_info->plt;
4310 toff = h->plt.offset;
4312 else if (h->root.type == bfd_link_hash_defined
4313 || h->root.type == bfd_link_hash_defweak)
4315 tsec = h->root.u.def.section;
4316 toff = h->root.u.def.value;
4324 /* If the branch and target are in the same section, you have
4325 no hope of adding stubs. We'll error out later should the
4330 /* There probably isn't any reason to handle symbols in
4331 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4332 attribute for a code section, and we are only looking at
4333 branches. However, implement it correctly here as a
4334 reference for other target relax_section functions. */
4335 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4337 /* At this stage in linking, no SEC_MERGE symbol has been
4338 adjusted, so all references to such symbols need to be
4339 passed through _bfd_merged_section_offset. (Later, in
4340 relocate_section, all SEC_MERGE symbols *except* for
4341 section symbols have been adjusted.)
4343 gas may reduce relocations against symbols in SEC_MERGE
4344 sections to a relocation against the section symbol when
4345 the original addend was zero. When the reloc is against
4346 a section symbol we should include the addend in the
4347 offset passed to _bfd_merged_section_offset, since the
4348 location of interest is the original symbol. On the
4349 other hand, an access to "sym+addend" where "sym" is not
4350 a section symbol should not include the addend; Such an
4351 access is presumed to be an offset from "sym"; The
4352 location of interest is just "sym". */
4353 if (sym_type == STT_SECTION)
4354 toff += irel->r_addend;
4356 toff = _bfd_merged_section_offset (abfd, &tsec,
4357 elf_section_data (tsec)->sec_info,
4360 if (sym_type != STT_SECTION)
4361 toff += irel->r_addend;
4364 toff += irel->r_addend;
4366 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
4368 roff = irel->r_offset;
4369 reladdr = isec->output_section->vma + isec->output_offset + roff;
4371 /* If the branch is in range, no need to do anything. */
4372 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4375 /* Look for an existing fixup to this address. */
4376 for (f = fixups; f ; f = f->next)
4377 if (f->tsec == tsec && f->toff == toff)
4383 unsigned long stub_rtype;
4385 val = trampoff - roff;
4386 if (val >= max_branch_offset)
4387 /* Oh dear, we can't reach a trampoline. Don't try to add
4388 one. We'll report an error later. */
4391 if (link_info->shared)
4393 size = 4 * ARRAY_SIZE (shared_stub_entry);
4395 stub_rtype = R_PPC_RELAX32PC;
4399 size = 4 * ARRAY_SIZE (stub_entry);
4401 stub_rtype = R_PPC_RELAX32;
4404 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4405 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4407 if (tsec == ppc_info->plt)
4408 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
4410 /* Hijack the old relocation. Since we need two
4411 relocations for this use a "composite" reloc. */
4412 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4414 irel->r_offset = trampoff + insn_offset;
4416 /* Record the fixup so we don't do it again this section. */
4417 f = bfd_malloc (sizeof (*f));
4421 f->trampoff = trampoff;
4428 val = f->trampoff - roff;
4429 if (val >= max_branch_offset)
4432 /* Nop out the reloc, since we're finalizing things here. */
4433 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4436 /* Get the section contents. */
4437 if (contents == NULL)
4439 /* Get cached copy if it exists. */
4440 if (elf_section_data (isec)->this_hdr.contents != NULL)
4441 contents = elf_section_data (isec)->this_hdr.contents;
4444 /* Go get them off disk. */
4445 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4450 /* Fix up the existing branch to hit the trampoline. */
4451 hit_addr = contents + roff;
4455 case R_PPC_LOCAL24PC:
4456 case R_PPC_PLTREL24:
4457 t0 = bfd_get_32 (abfd, hit_addr);
4459 t0 |= val & 0x3fffffc;
4460 bfd_put_32 (abfd, t0, hit_addr);
4464 case R_PPC_REL14_BRTAKEN:
4465 case R_PPC_REL14_BRNTAKEN:
4466 t0 = bfd_get_32 (abfd, hit_addr);
4469 bfd_put_32 (abfd, t0, hit_addr);
4474 /* Write out the trampolines. */
4475 changed = fixups != NULL;
4485 struct one_fixup *f = fixups;
4486 fixups = fixups->next;
4491 contents = bfd_realloc (contents, trampoff);
4492 if (contents == NULL)
4495 isec->size = (isec->size + 3) & (bfd_vma) -4;
4496 /* Branch around the trampolines. */
4497 val = trampoff - isec->size + 0x48000000;
4498 dest = contents + isec->size;
4499 isec->size = trampoff;
4500 bfd_put_32 (abfd, val, dest);
4503 if (link_info->shared)
4505 stub = shared_stub_entry;
4506 size = ARRAY_SIZE (shared_stub_entry);
4511 size = ARRAY_SIZE (stub_entry);
4515 while (dest < contents + trampoff)
4517 bfd_put_32 (abfd, stub[i], dest);
4523 BFD_ASSERT (i == 0);
4527 && symtab_hdr->contents != (unsigned char *) isymbuf)
4529 if (! link_info->keep_memory)
4533 /* Cache the symbols for elf_link_input_bfd. */
4534 symtab_hdr->contents = (unsigned char *) isymbuf;
4538 if (contents != NULL
4539 && elf_section_data (isec)->this_hdr.contents != contents)
4541 if (!changed && !link_info->keep_memory)
4545 /* Cache the section contents for elf_link_input_bfd. */
4546 elf_section_data (isec)->this_hdr.contents = contents;
4550 if (elf_section_data (isec)->relocs != internal_relocs)
4553 free (internal_relocs);
4555 elf_section_data (isec)->relocs = internal_relocs;
4562 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
4564 if (contents != NULL
4565 && elf_section_data (isec)->this_hdr.contents != contents)
4567 if (internal_relocs != NULL
4568 && elf_section_data (isec)->relocs != internal_relocs)
4569 free (internal_relocs);
4573 /* Set SYM_NAME to VAL if the symbol exists and is undefined. */
4576 set_linker_sym (struct ppc_elf_link_hash_table *htab,
4577 const char *sym_name,
4580 struct elf_link_hash_entry *h;
4581 h = elf_link_hash_lookup (&htab->elf, sym_name, FALSE, FALSE, FALSE);
4582 if (h != NULL && h->root.type == bfd_link_hash_undefined)
4584 h->root.type = bfd_link_hash_defined;
4585 h->root.u.def.section = bfd_abs_section_ptr;
4586 h->root.u.def.value = val;
4588 h->type = STT_OBJECT;
4589 h->other = STV_HIDDEN;
4593 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
4594 set here rather than via PROVIDE in the default linker script,
4595 because using PROVIDE inside an output section statement results in
4596 unnecessary output sections. Using PROVIDE outside an output section
4597 statement runs the risk of section alignment affecting where the
4601 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
4603 struct ppc_elf_link_hash_table *htab;
4608 htab = ppc_elf_hash_table (info);
4610 for (i = 0; i < 2; i++)
4612 elf_linker_section_t *lsect = &htab->sdata[i];
4616 s = s->output_section;
4618 s = bfd_get_section_by_name (obfd, lsect->name);
4620 s = bfd_get_section_by_name (obfd, lsect->bss_name);
4624 val = s->vma + 32768;
4625 lsect->sym_val = val;
4627 set_linker_sym (htab, lsect->sym_name, val);
4630 s = bfd_get_section_by_name (obfd, ".sbss");
4634 set_linker_sym (htab, "__sbss_start", val);
4635 set_linker_sym (htab, "___sbss_start", val);
4638 set_linker_sym (htab, "__sbss_end", val);
4639 set_linker_sym (htab, "___sbss_end", val);
4643 #define bfd_put_ptr(BFD, VAL, ADDR) bfd_put_32 (BFD, VAL, ADDR)
4645 /* Fill in the address for a pointer generated in a linker section. */
4648 elf_finish_pointer_linker_section (bfd *output_bfd,
4650 struct bfd_link_info *info,
4651 elf_linker_section_t *lsect,
4652 struct elf_link_hash_entry *h,
4654 const Elf_Internal_Rela *rel)
4656 elf_linker_section_pointers_t *linker_section_ptr;
4658 BFD_ASSERT (lsect != NULL);
4662 /* Handle global symbol. */
4663 struct ppc_elf_link_hash_entry *eh;
4665 eh = (struct ppc_elf_link_hash_entry *) h;
4667 = elf_find_pointer_linker_section (eh->linker_section_pointer,
4671 BFD_ASSERT (linker_section_ptr != NULL);
4673 if (! elf_hash_table (info)->dynamic_sections_created
4678 /* This is actually a static link, or it is a
4679 -Bsymbolic link and the symbol is defined
4680 locally. We must initialize this entry in the
4683 When doing a dynamic link, we create a .rela.<xxx>
4684 relocation entry to initialize the value. This
4685 is done in the finish_dynamic_symbol routine. */
4686 if (!linker_section_ptr->written_address_p)
4688 linker_section_ptr->written_address_p = TRUE;
4689 bfd_put_ptr (output_bfd,
4690 relocation + linker_section_ptr->addend,
4691 (lsect->section->contents
4692 + linker_section_ptr->offset));
4698 /* Handle local symbol. */
4699 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
4700 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
4701 BFD_ASSERT (elf_local_ptr_offsets (input_bfd)[r_symndx] != NULL);
4702 linker_section_ptr = (elf_find_pointer_linker_section
4703 (elf_local_ptr_offsets (input_bfd)[r_symndx],
4707 BFD_ASSERT (linker_section_ptr != NULL);
4709 /* Write out pointer if it hasn't been rewritten out before. */
4710 if (!linker_section_ptr->written_address_p)
4712 linker_section_ptr->written_address_p = TRUE;
4713 bfd_put_ptr (output_bfd, relocation + linker_section_ptr->addend,
4714 lsect->section->contents + linker_section_ptr->offset);
4718 relocation = (lsect->section->output_offset
4719 + linker_section_ptr->offset
4724 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
4725 lsect->name, (long) relocation, (long) relocation);
4728 /* Subtract out the addend, because it will get added back in by the normal
4730 return relocation - linker_section_ptr->addend;
4733 /* The RELOCATE_SECTION function is called by the ELF backend linker
4734 to handle the relocations for a section.
4736 The relocs are always passed as Rela structures; if the section
4737 actually uses Rel structures, the r_addend field will always be
4740 This function is responsible for adjust the section contents as
4741 necessary, and (if using Rela relocs and generating a
4742 relocatable output file) adjusting the reloc addend as
4745 This function does not have to worry about setting the reloc
4746 address or the reloc symbol index.
4748 LOCAL_SYMS is a pointer to the swapped in local symbols.
4750 LOCAL_SECTIONS is an array giving the section in the input file
4751 corresponding to the st_shndx field of each local symbol.
4753 The global hash table entry for the global symbols can be found
4754 via elf_sym_hashes (input_bfd).
4756 When generating relocatable output, this function must handle
4757 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
4758 going to be the section symbol corresponding to the output
4759 section, which means that the addend must be adjusted
4763 ppc_elf_relocate_section (bfd *output_bfd,
4764 struct bfd_link_info *info,
4766 asection *input_section,
4768 Elf_Internal_Rela *relocs,
4769 Elf_Internal_Sym *local_syms,
4770 asection **local_sections)
4772 Elf_Internal_Shdr *symtab_hdr;
4773 struct elf_link_hash_entry **sym_hashes;
4774 struct ppc_elf_link_hash_table *htab;
4775 Elf_Internal_Rela *rel;
4776 Elf_Internal_Rela *relend;
4777 Elf_Internal_Rela outrel;
4779 asection *sreloc = NULL;
4780 bfd_vma *local_got_offsets;
4781 bfd_boolean ret = TRUE;
4784 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
4785 "%ld relocations%s",
4786 input_bfd, input_section,
4787 (long) input_section->reloc_count,
4788 (info->relocatable) ? " (relocatable)" : "");
4791 if (info->relocatable)
4794 /* Initialize howto table if not already done. */
4795 if (!ppc_elf_howto_table[R_PPC_ADDR32])
4796 ppc_elf_howto_init ();
4798 htab = ppc_elf_hash_table (info);
4799 local_got_offsets = elf_local_got_offsets (input_bfd);
4800 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4801 sym_hashes = elf_sym_hashes (input_bfd);
4803 relend = relocs + input_section->reloc_count;
4804 for (; rel < relend; rel++)
4806 enum elf_ppc_reloc_type r_type;
4808 bfd_reloc_status_type r;
4809 Elf_Internal_Sym *sym;
4811 struct elf_link_hash_entry *h;
4812 const char *sym_name;
4813 reloc_howto_type *howto;
4814 unsigned long r_symndx;
4816 bfd_vma branch_bit, insn, from;
4817 bfd_boolean unresolved_reloc;
4819 unsigned int tls_type, tls_mask, tls_gd;
4821 r_type = ELF32_R_TYPE (rel->r_info);
4825 unresolved_reloc = FALSE;
4827 r_symndx = ELF32_R_SYM (rel->r_info);
4829 if (r_symndx < symtab_hdr->sh_info)
4831 sym = local_syms + r_symndx;
4832 sec = local_sections[r_symndx];
4833 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym);
4835 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
4839 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
4840 r_symndx, symtab_hdr, sym_hashes,
4842 unresolved_reloc, warned);
4844 sym_name = h->root.root.string;
4847 /* TLS optimizations. Replace instruction sequences and relocs
4848 based on information we collected in tls_optimize. We edit
4849 RELOCS so that --emit-relocs will output something sensible
4850 for the final instruction stream. */
4853 if (IS_PPC_TLS_RELOC (r_type))
4856 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
4857 else if (local_got_offsets != NULL)
4860 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
4861 tls_mask = lgot_masks[r_symndx];
4865 /* Ensure reloc mapping code below stays sane. */
4866 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
4867 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
4868 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
4869 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
4870 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
4871 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
4872 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
4873 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
4880 case R_PPC_GOT_TPREL16:
4881 case R_PPC_GOT_TPREL16_LO:
4883 && (tls_mask & TLS_TPREL) == 0)
4886 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
4888 insn |= 0x3c020000; /* addis 0,2,0 */
4889 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
4890 r_type = R_PPC_TPREL16_HA;
4891 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4897 && (tls_mask & TLS_TPREL) == 0)
4900 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
4901 if ((insn & ((31 << 26) | (31 << 11)))
4902 == ((31 << 26) | (2 << 11)))
4903 rtra = insn & ((1 << 26) - (1 << 16));
4904 else if ((insn & ((31 << 26) | (31 << 16)))
4905 == ((31 << 26) | (2 << 16)))
4906 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
4909 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
4912 else if ((insn & (31 << 1)) == 23 << 1
4913 && ((insn & (31 << 6)) < 14 << 6
4914 || ((insn & (31 << 6)) >= 16 << 6
4915 && (insn & (31 << 6)) < 24 << 6)))
4916 /* load and store indexed -> dform. */
4917 insn = (32 | ((insn >> 6) & 31)) << 26;
4918 else if ((insn & (31 << 1)) == 21 << 1
4919 && (insn & (0x1a << 6)) == 0)
4920 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
4921 insn = (((58 | ((insn >> 6) & 4)) << 26)
4922 | ((insn >> 6) & 1));
4923 else if ((insn & (31 << 1)) == 21 << 1
4924 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
4926 insn = (58 << 26) | 2;
4930 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
4931 r_type = R_PPC_TPREL16_LO;
4932 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4933 /* Was PPC_TLS which sits on insn boundary, now
4934 PPC_TPREL16_LO which is at insn+2. */
4939 case R_PPC_GOT_TLSGD16_HI:
4940 case R_PPC_GOT_TLSGD16_HA:
4941 tls_gd = TLS_TPRELGD;
4942 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4946 case R_PPC_GOT_TLSLD16_HI:
4947 case R_PPC_GOT_TLSLD16_HA:
4948 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4951 if ((tls_mask & tls_gd) != 0)
4952 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
4953 + R_PPC_GOT_TPREL16);
4956 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
4958 r_type = R_PPC_NONE;
4960 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
4964 case R_PPC_GOT_TLSGD16:
4965 case R_PPC_GOT_TLSGD16_LO:
4966 tls_gd = TLS_TPRELGD;
4967 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
4968 goto tls_get_addr_check;
4971 case R_PPC_GOT_TLSLD16:
4972 case R_PPC_GOT_TLSLD16_LO:
4973 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
4976 if (rel + 1 < relend)
4978 enum elf_ppc_reloc_type r_type2;
4979 unsigned long r_symndx2;
4980 struct elf_link_hash_entry *h2;
4981 bfd_vma insn1, insn2;
4984 /* The next instruction should be a call to
4985 __tls_get_addr. Peek at the reloc to be sure. */
4986 r_type2 = ELF32_R_TYPE (rel[1].r_info);
4987 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
4988 if (r_symndx2 < symtab_hdr->sh_info
4989 || (r_type2 != R_PPC_REL14
4990 && r_type2 != R_PPC_REL14_BRTAKEN
4991 && r_type2 != R_PPC_REL14_BRNTAKEN
4992 && r_type2 != R_PPC_REL24
4993 && r_type2 != R_PPC_PLTREL24))
4996 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
4997 while (h2->root.type == bfd_link_hash_indirect
4998 || h2->root.type == bfd_link_hash_warning)
4999 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5000 if (h2 == NULL || h2 != htab->tls_get_addr)
5003 /* OK, it checks out. Replace the call. */
5004 offset = rel[1].r_offset;
5005 insn1 = bfd_get_32 (output_bfd,
5006 contents + rel->r_offset - 2);
5007 if ((tls_mask & tls_gd) != 0)
5010 insn1 &= (1 << 26) - 1;
5011 insn1 |= 32 << 26; /* lwz */
5012 insn2 = 0x7c631214; /* add 3,3,2 */
5013 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5014 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5015 + R_PPC_GOT_TPREL16);
5016 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5021 insn1 = 0x3c620000; /* addis 3,2,0 */
5022 insn2 = 0x38630000; /* addi 3,3,0 */
5025 /* Was an LD reloc. */
5027 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5028 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5030 r_type = R_PPC_TPREL16_HA;
5031 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5032 rel[1].r_info = ELF32_R_INFO (r_symndx,
5034 rel[1].r_offset += 2;
5036 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5037 bfd_put_32 (output_bfd, insn2, contents + offset);
5040 /* We changed the symbol on an LD reloc. Start over
5041 in order to get h, sym, sec etc. right. */
5050 /* Handle other relocations that tweak non-addend part of insn. */
5057 /* Branch taken prediction relocations. */
5058 case R_PPC_ADDR14_BRTAKEN:
5059 case R_PPC_REL14_BRTAKEN:
5060 branch_bit = BRANCH_PREDICT_BIT;
5063 /* Branch not taken prediction relocations. */
5064 case R_PPC_ADDR14_BRNTAKEN:
5065 case R_PPC_REL14_BRNTAKEN:
5066 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5067 insn &= ~BRANCH_PREDICT_BIT;
5070 from = (rel->r_offset
5071 + input_section->output_offset
5072 + input_section->output_section->vma);
5074 /* Invert 'y' bit if not the default. */
5075 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5076 insn ^= BRANCH_PREDICT_BIT;
5078 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5082 addend = rel->r_addend;
5085 if (r_type < R_PPC_max)
5086 howto = ppc_elf_howto_table[r_type];
5090 (*_bfd_error_handler)
5091 (_("%B: unknown relocation type %d for symbol %s"),
5092 input_bfd, (int) r_type, sym_name);
5094 bfd_set_error (bfd_error_bad_value);
5100 case R_PPC_EMB_MRKREF:
5101 case R_PPC_GNU_VTINHERIT:
5102 case R_PPC_GNU_VTENTRY:
5105 /* GOT16 relocations. Like an ADDR16 using the symbol's
5106 address in the GOT as relocation value instead of the
5107 symbol's value itself. Also, create a GOT entry for the
5108 symbol and put the symbol value there. */
5109 case R_PPC_GOT_TLSGD16:
5110 case R_PPC_GOT_TLSGD16_LO:
5111 case R_PPC_GOT_TLSGD16_HI:
5112 case R_PPC_GOT_TLSGD16_HA:
5113 tls_type = TLS_TLS | TLS_GD;
5116 case R_PPC_GOT_TLSLD16:
5117 case R_PPC_GOT_TLSLD16_LO:
5118 case R_PPC_GOT_TLSLD16_HI:
5119 case R_PPC_GOT_TLSLD16_HA:
5120 tls_type = TLS_TLS | TLS_LD;
5123 case R_PPC_GOT_TPREL16:
5124 case R_PPC_GOT_TPREL16_LO:
5125 case R_PPC_GOT_TPREL16_HI:
5126 case R_PPC_GOT_TPREL16_HA:
5127 tls_type = TLS_TLS | TLS_TPREL;
5130 case R_PPC_GOT_DTPREL16:
5131 case R_PPC_GOT_DTPREL16_LO:
5132 case R_PPC_GOT_DTPREL16_HI:
5133 case R_PPC_GOT_DTPREL16_HA:
5134 tls_type = TLS_TLS | TLS_DTPREL;
5138 case R_PPC_GOT16_LO:
5139 case R_PPC_GOT16_HI:
5140 case R_PPC_GOT16_HA:
5143 /* Relocation is to the entry for this symbol in the global
5149 if (htab->got == NULL)
5153 if (tls_type == (TLS_TLS | TLS_LD)
5155 || !h->def_dynamic))
5156 offp = &htab->tlsld_got.offset;
5160 dyn = htab->elf.dynamic_sections_created;
5161 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5163 && SYMBOL_REFERENCES_LOCAL (info, h)))
5164 /* This is actually a static link, or it is a
5165 -Bsymbolic link and the symbol is defined
5166 locally, or the symbol was forced to be local
5167 because of a version file. */
5172 unresolved_reloc = FALSE;
5174 offp = &h->got.offset;
5178 if (local_got_offsets == NULL)
5180 offp = &local_got_offsets[r_symndx];
5183 /* The offset must always be a multiple of 4. We use the
5184 least significant bit to record whether we have already
5185 processed this entry. */
5191 unsigned int tls_m = (tls_mask
5192 & (TLS_LD | TLS_GD | TLS_DTPREL
5193 | TLS_TPREL | TLS_TPRELGD));
5195 if (offp == &htab->tlsld_got.offset)
5201 /* We might have multiple got entries for this sym.
5202 Initialize them all. */
5207 if ((tls_m & TLS_LD) != 0)
5209 tls_ty = TLS_TLS | TLS_LD;
5212 else if ((tls_m & TLS_GD) != 0)
5214 tls_ty = TLS_TLS | TLS_GD;
5217 else if ((tls_m & TLS_DTPREL) != 0)
5219 tls_ty = TLS_TLS | TLS_DTPREL;
5220 tls_m &= ~TLS_DTPREL;
5222 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5224 tls_ty = TLS_TLS | TLS_TPREL;
5228 /* Generate relocs for the dynamic linker. */
5229 if ((info->shared || indx != 0)
5231 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5232 || h->root.type != bfd_link_hash_undefweak))
5234 outrel.r_offset = (htab->got->output_section->vma
5235 + htab->got->output_offset
5237 outrel.r_addend = 0;
5238 if (tls_ty & (TLS_LD | TLS_GD))
5240 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5241 if (tls_ty == (TLS_TLS | TLS_GD))
5243 loc = htab->relgot->contents;
5244 loc += (htab->relgot->reloc_count++
5245 * sizeof (Elf32_External_Rela));
5246 bfd_elf32_swap_reloca_out (output_bfd,
5248 outrel.r_offset += 4;
5250 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5253 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5254 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5255 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5256 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5258 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5260 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5263 outrel.r_addend += relocation;
5264 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5265 outrel.r_addend -= htab->elf.tls_sec->vma;
5267 loc = htab->relgot->contents;
5268 loc += (htab->relgot->reloc_count++
5269 * sizeof (Elf32_External_Rela));
5270 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5273 /* Init the .got section contents if we're not
5274 emitting a reloc. */
5277 bfd_vma value = relocation;
5279 if (tls_ty == (TLS_TLS | TLS_LD))
5281 else if (tls_ty != 0)
5283 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5284 if (tls_ty == (TLS_TLS | TLS_TPREL))
5285 value += DTP_OFFSET - TP_OFFSET;
5287 if (tls_ty == (TLS_TLS | TLS_GD))
5289 bfd_put_32 (output_bfd, value,
5290 htab->got->contents + off + 4);
5294 bfd_put_32 (output_bfd, value,
5295 htab->got->contents + off);
5299 if (tls_ty & (TLS_LD | TLS_GD))
5308 if (off >= (bfd_vma) -2)
5311 if ((tls_type & TLS_TLS) != 0)
5313 if (tls_type != (TLS_TLS | TLS_LD))
5315 if ((tls_mask & TLS_LD) != 0
5317 || !h->def_dynamic))
5319 if (tls_type != (TLS_TLS | TLS_GD))
5321 if ((tls_mask & TLS_GD) != 0)
5323 if (tls_type != (TLS_TLS | TLS_DTPREL))
5325 if ((tls_mask & TLS_DTPREL) != 0)
5332 relocation = htab->got->output_offset + off - 4;
5334 /* Addends on got relocations don't make much sense.
5335 x+off@got is actually x@got+off, and since the got is
5336 generated by a hash table traversal, the value in the
5337 got at entry m+n bears little relation to the entry m. */
5339 (*_bfd_error_handler)
5340 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5343 (long) rel->r_offset,
5349 /* Relocations that need no special processing. */
5350 case R_PPC_LOCAL24PC:
5351 /* It makes no sense to point a local relocation
5352 at a symbol not in this object. */
5353 if (unresolved_reloc)
5355 if (! (*info->callbacks->undefined_symbol) (info,
5356 h->root.root.string,
5366 case R_PPC_DTPREL16:
5367 case R_PPC_DTPREL16_LO:
5368 case R_PPC_DTPREL16_HI:
5369 case R_PPC_DTPREL16_HA:
5370 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5373 /* Relocations that may need to be propagated if this is a shared
5376 case R_PPC_TPREL16_LO:
5377 case R_PPC_TPREL16_HI:
5378 case R_PPC_TPREL16_HA:
5379 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5380 /* The TPREL16 relocs shouldn't really be used in shared
5381 libs as they will result in DT_TEXTREL being set, but
5382 support them anyway. */
5386 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5389 case R_PPC_DTPREL32:
5390 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5393 case R_PPC_DTPMOD32:
5401 case R_PPC_REL14_BRTAKEN:
5402 case R_PPC_REL14_BRNTAKEN:
5403 /* If these relocations are not to a named symbol, they can be
5404 handled right here, no need to bother the dynamic linker. */
5405 if (SYMBOL_REFERENCES_LOCAL (info, h)
5406 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
5410 /* Relocations that always need to be propagated if this is a shared
5415 case R_PPC_ADDR16_LO:
5416 case R_PPC_ADDR16_HI:
5417 case R_PPC_ADDR16_HA:
5419 case R_PPC_ADDR14_BRTAKEN:
5420 case R_PPC_ADDR14_BRNTAKEN:
5423 /* r_symndx will be zero only for relocs against symbols
5424 from removed linkonce sections, or sections discarded by
5433 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5434 || h->root.type != bfd_link_hash_undefweak)
5435 && (MUST_BE_DYN_RELOC (r_type)
5436 || !SYMBOL_CALLS_LOCAL (info, h)))
5437 || (ELIMINATE_COPY_RELOCS
5439 && (input_section->flags & SEC_ALLOC) != 0
5444 && !h->def_regular))
5449 fprintf (stderr, "ppc_elf_relocate_section needs to "
5450 "create relocation for %s\n",
5451 (h && h->root.root.string
5452 ? h->root.root.string : "<unknown>"));
5455 /* When generating a shared object, these relocations
5456 are copied into the output file to be resolved at run
5462 name = (bfd_elf_string_from_elf_section
5464 elf_elfheader (input_bfd)->e_shstrndx,
5465 elf_section_data (input_section)->rel_hdr.sh_name));
5469 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5470 && strcmp (bfd_get_section_name (input_bfd,
5474 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5475 BFD_ASSERT (sreloc != NULL);
5481 _bfd_elf_section_offset (output_bfd, info, input_section,
5483 if (outrel.r_offset == (bfd_vma) -1
5484 || outrel.r_offset == (bfd_vma) -2)
5485 skip = (int) outrel.r_offset;
5486 outrel.r_offset += (input_section->output_section->vma
5487 + input_section->output_offset);
5490 memset (&outrel, 0, sizeof outrel);
5491 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5493 unresolved_reloc = FALSE;
5494 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5495 outrel.r_addend = rel->r_addend;
5499 outrel.r_addend = relocation + rel->r_addend;
5501 if (r_type == R_PPC_ADDR32)
5502 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5507 if (bfd_is_abs_section (sec))
5509 else if (sec == NULL || sec->owner == NULL)
5511 bfd_set_error (bfd_error_bad_value);
5518 /* We are turning this relocation into one
5519 against a section symbol. It would be
5520 proper to subtract the symbol's value,
5521 osec->vma, from the emitted reloc addend,
5522 but ld.so expects buggy relocs. */
5523 osec = sec->output_section;
5524 indx = elf_section_data (osec)->dynindx;
5525 BFD_ASSERT (indx > 0);
5528 printf ("indx=%d section=%s flags=%08x name=%s\n",
5529 indx, osec->name, osec->flags,
5530 h->root.root.string);
5534 outrel.r_info = ELF32_R_INFO (indx, r_type);
5538 loc = sreloc->contents;
5539 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5540 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5545 /* This reloc will be computed at runtime. We clear the memory
5546 so that it contains predictable value. */
5548 && ((input_section->flags & SEC_ALLOC) != 0
5549 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5551 relocation = howto->pc_relative ? outrel.r_offset : 0;
5558 case R_PPC_RELAX32PC_PLT:
5559 case R_PPC_RELAX32_PLT:
5560 BFD_ASSERT (h != NULL
5561 && h->plt.offset != (bfd_vma) -1
5562 && htab->plt != NULL);
5564 relocation = (htab->plt->output_section->vma
5565 + htab->plt->output_offset
5567 if (r_type == R_PPC_RELAX32_PLT)
5571 case R_PPC_RELAX32PC:
5572 relocation -= (input_section->output_section->vma
5573 + input_section->output_offset
5574 + rel->r_offset - 4);
5583 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
5584 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
5586 /* We're clearing the bits for R_PPC_ADDR16_HA
5587 and R_PPC_ADDR16_LO here. */
5591 /* t0 is HA, t1 is LO */
5592 relocation += addend;
5593 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
5594 t1 |= relocation & 0xffff;
5596 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
5597 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
5601 /* Indirect .sdata relocation. */
5602 case R_PPC_EMB_SDAI16:
5603 BFD_ASSERT (htab->sdata[0].section != NULL);
5605 = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
5610 /* Indirect .sdata2 relocation. */
5611 case R_PPC_EMB_SDA2I16:
5612 BFD_ASSERT (htab->sdata[1].section != NULL);
5614 = elf_finish_pointer_linker_section (output_bfd, input_bfd, info,
5619 /* Handle the TOC16 reloc. We want to use the offset within the .got
5620 section, not the actual VMA. This is appropriate when generating
5621 an embedded ELF object, for which the .got section acts like the
5622 AIX .toc section. */
5623 case R_PPC_TOC16: /* phony GOT16 relocations */
5624 BFD_ASSERT (sec != NULL);
5625 BFD_ASSERT (bfd_is_und_section (sec)
5626 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
5627 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
5629 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
5632 case R_PPC_PLTREL24:
5633 /* Relocation is to the entry for this symbol in the
5634 procedure linkage table. */
5635 BFD_ASSERT (h != NULL);
5637 if (h->plt.offset == (bfd_vma) -1
5638 || htab->plt == NULL)
5640 /* We didn't make a PLT entry for this symbol. This
5641 happens when statically linking PIC code, or when
5642 using -Bsymbolic. */
5646 unresolved_reloc = FALSE;
5647 relocation = (htab->plt->output_section->vma
5648 + htab->plt->output_offset
5652 /* Relocate against _SDA_BASE_. */
5653 case R_PPC_SDAREL16:
5657 BFD_ASSERT (sec != NULL);
5658 name = bfd_get_section_name (abfd, sec->output_section);
5659 if (! ((strncmp (name, ".sdata", 6) == 0
5660 && (name[6] == 0 || name[6] == '.'))
5661 || (strncmp (name, ".sbss", 5) == 0
5662 && (name[5] == 0 || name[5] == '.'))))
5664 (*_bfd_error_handler)
5665 (_("%B: the target (%s) of a %s relocation is "
5666 "in the wrong output section (%s)"),
5672 addend -= htab->sdata[0].sym_val;
5676 /* Relocate against _SDA2_BASE_. */
5677 case R_PPC_EMB_SDA2REL:
5681 BFD_ASSERT (sec != NULL);
5682 name = bfd_get_section_name (abfd, sec->output_section);
5683 if (! (strncmp (name, ".sdata2", 7) == 0
5684 || strncmp (name, ".sbss2", 6) == 0))
5686 (*_bfd_error_handler)
5687 (_("%B: the target (%s) of a %s relocation is "
5688 "in the wrong output section (%s)"),
5694 bfd_set_error (bfd_error_bad_value);
5698 addend -= htab->sdata[1].sym_val;
5702 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
5703 case R_PPC_EMB_SDA21:
5704 case R_PPC_EMB_RELSDA:
5709 BFD_ASSERT (sec != NULL);
5710 name = bfd_get_section_name (abfd, sec->output_section);
5711 if (((strncmp (name, ".sdata", 6) == 0
5712 && (name[6] == 0 || name[6] == '.'))
5713 || (strncmp (name, ".sbss", 5) == 0
5714 && (name[5] == 0 || name[5] == '.'))))
5717 addend -= htab->sdata[0].sym_val;
5720 else if (strncmp (name, ".sdata2", 7) == 0
5721 || strncmp (name, ".sbss2", 6) == 0)
5724 addend -= htab->sdata[1].sym_val;
5727 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
5728 || strcmp (name, ".PPC.EMB.sbss0") == 0)
5735 (*_bfd_error_handler)
5736 (_("%B: the target (%s) of a %s relocation is "
5737 "in the wrong output section (%s)"),
5743 bfd_set_error (bfd_error_bad_value);
5748 if (r_type == R_PPC_EMB_SDA21)
5749 { /* fill in register field */
5750 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5751 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
5752 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5757 /* Relocate against the beginning of the section. */
5759 case R_PPC_SECTOFF_LO:
5760 case R_PPC_SECTOFF_HI:
5761 case R_PPC_SECTOFF_HA:
5762 BFD_ASSERT (sec != NULL);
5763 addend -= sec->output_section->vma;
5766 /* Negative relocations. */
5767 case R_PPC_EMB_NADDR32:
5768 case R_PPC_EMB_NADDR16:
5769 case R_PPC_EMB_NADDR16_LO:
5770 case R_PPC_EMB_NADDR16_HI:
5771 case R_PPC_EMB_NADDR16_HA:
5772 addend -= 2 * relocation;
5776 case R_PPC_GLOB_DAT:
5777 case R_PPC_JMP_SLOT:
5778 case R_PPC_RELATIVE:
5780 case R_PPC_PLTREL32:
5781 case R_PPC_PLT16_LO:
5782 case R_PPC_PLT16_HI:
5783 case R_PPC_PLT16_HA:
5785 case R_PPC_EMB_RELSEC16:
5786 case R_PPC_EMB_RELST_LO:
5787 case R_PPC_EMB_RELST_HI:
5788 case R_PPC_EMB_RELST_HA:
5789 case R_PPC_EMB_BIT_FLD:
5790 (*_bfd_error_handler)
5791 (_("%B: relocation %s is not yet supported for symbol %s."),
5796 bfd_set_error (bfd_error_invalid_operation);
5801 /* Do any further special processing. */
5807 case R_PPC_ADDR16_HA:
5808 case R_PPC_GOT16_HA:
5809 case R_PPC_PLT16_HA:
5810 case R_PPC_SECTOFF_HA:
5811 case R_PPC_TPREL16_HA:
5812 case R_PPC_DTPREL16_HA:
5813 case R_PPC_GOT_TLSGD16_HA:
5814 case R_PPC_GOT_TLSLD16_HA:
5815 case R_PPC_GOT_TPREL16_HA:
5816 case R_PPC_GOT_DTPREL16_HA:
5817 case R_PPC_EMB_NADDR16_HA:
5818 case R_PPC_EMB_RELST_HA:
5819 /* It's just possible that this symbol is a weak symbol
5820 that's not actually defined anywhere. In that case,
5821 'sec' would be NULL, and we should leave the symbol
5822 alone (it will be set to zero elsewhere in the link). */
5824 /* Add 0x10000 if sign bit in 0:15 is set.
5825 Bits 0:15 are not used. */
5831 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
5832 "offset = %ld, addend = %ld\n",
5837 (long) rel->r_offset,
5841 if (unresolved_reloc
5842 && !((input_section->flags & SEC_DEBUGGING) != 0
5845 (*_bfd_error_handler)
5846 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
5849 (long) rel->r_offset,
5855 r = _bfd_final_link_relocate (howto,
5863 if (r != bfd_reloc_ok)
5865 if (sym_name == NULL)
5866 sym_name = "(null)";
5867 if (r == bfd_reloc_overflow)
5872 && h->root.type == bfd_link_hash_undefweak
5873 && howto->pc_relative)
5875 /* Assume this is a call protected by other code that
5876 detect the symbol is undefined. If this is the case,
5877 we can safely ignore the overflow. If not, the
5878 program is hosed anyway, and a little warning isn't
5884 if (! (*info->callbacks->reloc_overflow) (info,
5885 (h ? &h->root : NULL),
5896 (*_bfd_error_handler)
5897 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
5898 input_bfd, input_section,
5899 (long) rel->r_offset, howto->name, sym_name, (int) r);
5906 fprintf (stderr, "\n");
5912 /* Finish up dynamic symbol handling. We set the contents of various
5913 dynamic sections here. */
5916 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
5917 struct bfd_link_info *info,
5918 struct elf_link_hash_entry *h,
5919 Elf_Internal_Sym *sym)
5921 struct ppc_elf_link_hash_table *htab;
5924 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
5925 h->root.root.string);
5928 htab = ppc_elf_hash_table (info);
5929 BFD_ASSERT (htab->elf.dynobj != NULL);
5931 if (h->plt.offset != (bfd_vma) -1)
5933 Elf_Internal_Rela rela;
5935 bfd_vma reloc_index;
5938 fprintf (stderr, ", plt_offset = %d", h->plt.offset);
5941 /* This symbol has an entry in the procedure linkage table. Set
5944 BFD_ASSERT (h->dynindx != -1);
5945 BFD_ASSERT (htab->plt != NULL && htab->relplt != NULL);
5947 /* We don't need to fill in the .plt. The ppc dynamic linker
5950 /* Fill in the entry in the .rela.plt section. */
5951 rela.r_offset = (htab->plt->output_section->vma
5952 + htab->plt->output_offset
5954 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
5957 reloc_index = (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_SLOT_SIZE;
5958 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
5959 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
5960 loc = (htab->relplt->contents
5961 + reloc_index * sizeof (Elf32_External_Rela));
5962 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
5964 if (!h->def_regular)
5966 /* Mark the symbol as undefined, rather than as defined in
5967 the .plt section. Leave the value alone. */
5968 sym->st_shndx = SHN_UNDEF;
5969 /* If the symbol is weak, we do need to clear the value.
5970 Otherwise, the PLT entry would provide a definition for
5971 the symbol even if the symbol wasn't defined anywhere,
5972 and so the symbol would never be NULL. */
5973 if (!h->ref_regular_nonweak)
5981 Elf_Internal_Rela rela;
5984 /* This symbols needs a copy reloc. Set it up. */
5987 fprintf (stderr, ", copy");
5990 BFD_ASSERT (h->dynindx != -1);
5992 if (h->size <= elf_gp_size (htab->elf.dynobj))
5996 BFD_ASSERT (s != NULL);
5998 rela.r_offset = (h->root.u.def.value
5999 + h->root.u.def.section->output_section->vma
6000 + h->root.u.def.section->output_offset);
6001 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6003 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6004 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6008 fprintf (stderr, "\n");
6011 /* Mark some specially defined symbols as absolute. */
6012 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
6013 || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0
6014 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
6015 sym->st_shndx = SHN_ABS;
6020 static enum elf_reloc_type_class
6021 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6023 switch (ELF32_R_TYPE (rela->r_info))
6025 case R_PPC_RELATIVE:
6026 return reloc_class_relative;
6029 case R_PPC_JMP_SLOT:
6030 return reloc_class_plt;
6032 return reloc_class_copy;
6034 return reloc_class_normal;
6038 /* Finish up the dynamic sections. */
6041 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6042 struct bfd_link_info *info)
6045 struct ppc_elf_link_hash_table *htab;
6048 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6051 htab = ppc_elf_hash_table (info);
6052 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
6054 if (htab->elf.dynamic_sections_created)
6056 Elf32_External_Dyn *dyncon, *dynconend;
6058 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6060 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6061 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6062 for (; dyncon < dynconend; dyncon++)
6064 Elf_Internal_Dyn dyn;
6067 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
6073 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6077 dyn.d_un.d_val = htab->relplt->size;
6082 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6089 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6093 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6094 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6097 unsigned char *contents = htab->got->contents;
6098 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, contents);
6101 bfd_put_32 (output_bfd, 0, contents + 4);
6103 bfd_put_32 (output_bfd,
6104 sdyn->output_section->vma + sdyn->output_offset,
6107 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6113 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6114 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6115 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6116 #define TARGET_BIG_NAME "elf32-powerpc"
6117 #define ELF_ARCH bfd_arch_powerpc
6118 #define ELF_MACHINE_CODE EM_PPC
6119 #ifdef __QNXTARGET__
6120 #define ELF_MAXPAGESIZE 0x1000
6122 #define ELF_MAXPAGESIZE 0x10000
6124 #define ELF_MINPAGESIZE 0x1000
6125 #define elf_info_to_howto ppc_elf_info_to_howto
6127 #ifdef EM_CYGNUS_POWERPC
6128 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6132 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6135 #define elf_backend_plt_not_loaded 1
6136 #define elf_backend_got_symbol_offset 4
6137 #define elf_backend_can_gc_sections 1
6138 #define elf_backend_can_refcount 1
6139 #define elf_backend_got_header_size 12
6140 #define elf_backend_rela_normal 1
6142 #define bfd_elf32_mkobject ppc_elf_mkobject
6143 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6144 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6145 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6146 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6147 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6149 #define elf_backend_object_p ppc_elf_object_p
6150 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6151 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6152 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6153 #define elf_backend_relocate_section ppc_elf_relocate_section
6154 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6155 #define elf_backend_check_relocs ppc_elf_check_relocs
6156 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6157 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6158 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6159 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6160 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6161 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6162 #define elf_backend_fake_sections ppc_elf_fake_sections
6163 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6164 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6165 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6166 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6167 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6168 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6169 #define elf_backend_write_section ppc_elf_write_section
6170 #define elf_backend_special_sections ppc_elf_special_sections
6171 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6173 #include "elf32-target.h"
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