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., 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, 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 /* For old-style PLT. */
55 /* The size in bytes of an entry in the procedure linkage table. */
56 #define PLT_ENTRY_SIZE 12
57 /* The initial size of the plt reserved for the dynamic linker. */
58 #define PLT_INITIAL_ENTRY_SIZE 72
59 /* The size of the gap between entries in the PLT. */
60 #define PLT_SLOT_SIZE 8
61 /* The number of single-slot PLT entries (the rest use two slots). */
62 #define PLT_NUM_SINGLE_ENTRIES 8192
64 /* For new-style .glink and .plt. */
65 #define GLINK_PLTRESOLVE 16*4
66 #define GLINK_ENTRY_SIZE 4*4
68 /* Some instructions. */
69 #define ADDIS_11_11 0x3d6b0000
70 #define ADDIS_11_30 0x3d7e0000
71 #define ADDIS_12_12 0x3d8c0000
72 #define ADDI_11_11 0x396b0000
73 #define ADD_0_11_11 0x7c0b5a14
74 #define ADD_11_0_11 0x7d605a14
76 #define BCL_20_31 0x429f0005
77 #define BCTR 0x4e800420
78 #define LIS_11 0x3d600000
79 #define LIS_12 0x3d800000
80 #define LWZU_0_12 0x840c0000
81 #define LWZ_0_12 0x800c0000
82 #define LWZ_11_11 0x816b0000
83 #define LWZ_11_30 0x817e0000
84 #define LWZ_12_12 0x818c0000
85 #define MFLR_0 0x7c0802a6
86 #define MFLR_12 0x7d8802a6
87 #define MTCTR_0 0x7c0903a6
88 #define MTCTR_11 0x7d6903a6
89 #define MTLR_0 0x7c0803a6
90 #define NOP 0x60000000
91 #define SUB_11_11_12 0x7d6c5850
93 /* Offset of tp and dtp pointers from start of TLS block. */
94 #define TP_OFFSET 0x7000
95 #define DTP_OFFSET 0x8000
97 static reloc_howto_type *ppc_elf_howto_table[R_PPC_max];
99 static reloc_howto_type ppc_elf_howto_raw[] = {
100 /* This reloc does nothing. */
101 HOWTO (R_PPC_NONE, /* type */
103 2, /* size (0 = byte, 1 = short, 2 = long) */
105 FALSE, /* pc_relative */
107 complain_overflow_bitfield, /* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_PPC_NONE", /* name */
110 FALSE, /* partial_inplace */
113 FALSE), /* pcrel_offset */
115 /* A standard 32 bit relocation. */
116 HOWTO (R_PPC_ADDR32, /* type */
118 2, /* size (0 = byte, 1 = short, 2 = long) */
120 FALSE, /* pc_relative */
122 complain_overflow_bitfield, /* complain_on_overflow */
123 bfd_elf_generic_reloc, /* special_function */
124 "R_PPC_ADDR32", /* name */
125 FALSE, /* partial_inplace */
127 0xffffffff, /* dst_mask */
128 FALSE), /* pcrel_offset */
130 /* An absolute 26 bit branch; the lower two bits must be zero.
131 FIXME: we don't check that, we just clear them. */
132 HOWTO (R_PPC_ADDR24, /* type */
134 2, /* size (0 = byte, 1 = short, 2 = long) */
136 FALSE, /* pc_relative */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_PPC_ADDR24", /* name */
141 FALSE, /* partial_inplace */
143 0x3fffffc, /* dst_mask */
144 FALSE), /* pcrel_offset */
146 /* A standard 16 bit relocation. */
147 HOWTO (R_PPC_ADDR16, /* type */
149 1, /* size (0 = byte, 1 = short, 2 = long) */
151 FALSE, /* pc_relative */
153 complain_overflow_bitfield, /* complain_on_overflow */
154 bfd_elf_generic_reloc, /* special_function */
155 "R_PPC_ADDR16", /* name */
156 FALSE, /* partial_inplace */
158 0xffff, /* dst_mask */
159 FALSE), /* pcrel_offset */
161 /* A 16 bit relocation without overflow. */
162 HOWTO (R_PPC_ADDR16_LO, /* type */
164 1, /* size (0 = byte, 1 = short, 2 = long) */
166 FALSE, /* pc_relative */
168 complain_overflow_dont,/* complain_on_overflow */
169 bfd_elf_generic_reloc, /* special_function */
170 "R_PPC_ADDR16_LO", /* name */
171 FALSE, /* partial_inplace */
173 0xffff, /* dst_mask */
174 FALSE), /* pcrel_offset */
176 /* The high order 16 bits of an address. */
177 HOWTO (R_PPC_ADDR16_HI, /* type */
179 1, /* size (0 = byte, 1 = short, 2 = long) */
181 FALSE, /* pc_relative */
183 complain_overflow_dont, /* complain_on_overflow */
184 bfd_elf_generic_reloc, /* special_function */
185 "R_PPC_ADDR16_HI", /* name */
186 FALSE, /* partial_inplace */
188 0xffff, /* dst_mask */
189 FALSE), /* pcrel_offset */
191 /* The high order 16 bits of an address, plus 1 if the contents of
192 the low 16 bits, treated as a signed number, is negative. */
193 HOWTO (R_PPC_ADDR16_HA, /* type */
195 1, /* size (0 = byte, 1 = short, 2 = long) */
197 FALSE, /* pc_relative */
199 complain_overflow_dont, /* complain_on_overflow */
200 ppc_elf_addr16_ha_reloc, /* special_function */
201 "R_PPC_ADDR16_HA", /* name */
202 FALSE, /* partial_inplace */
204 0xffff, /* dst_mask */
205 FALSE), /* pcrel_offset */
207 /* An absolute 16 bit branch; the lower two bits must be zero.
208 FIXME: we don't check that, we just clear them. */
209 HOWTO (R_PPC_ADDR14, /* type */
211 2, /* size (0 = byte, 1 = short, 2 = long) */
213 FALSE, /* pc_relative */
215 complain_overflow_bitfield, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC_ADDR14", /* name */
218 FALSE, /* partial_inplace */
220 0xfffc, /* dst_mask */
221 FALSE), /* pcrel_offset */
223 /* An absolute 16 bit branch, for which bit 10 should be set to
224 indicate that the branch is expected to be taken. The lower two
225 bits must be zero. */
226 HOWTO (R_PPC_ADDR14_BRTAKEN, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE, /* pc_relative */
232 complain_overflow_bitfield, /* complain_on_overflow */
233 bfd_elf_generic_reloc, /* special_function */
234 "R_PPC_ADDR14_BRTAKEN",/* name */
235 FALSE, /* partial_inplace */
237 0xfffc, /* dst_mask */
238 FALSE), /* pcrel_offset */
240 /* An absolute 16 bit branch, for which bit 10 should be set to
241 indicate that the branch is not expected to be taken. The lower
242 two bits must be zero. */
243 HOWTO (R_PPC_ADDR14_BRNTAKEN, /* type */
245 2, /* size (0 = byte, 1 = short, 2 = long) */
247 FALSE, /* pc_relative */
249 complain_overflow_bitfield, /* complain_on_overflow */
250 bfd_elf_generic_reloc, /* special_function */
251 "R_PPC_ADDR14_BRNTAKEN",/* name */
252 FALSE, /* partial_inplace */
254 0xfffc, /* dst_mask */
255 FALSE), /* pcrel_offset */
257 /* A relative 26 bit branch; the lower two bits must be zero. */
258 HOWTO (R_PPC_REL24, /* type */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
262 TRUE, /* pc_relative */
264 complain_overflow_signed, /* complain_on_overflow */
265 bfd_elf_generic_reloc, /* special_function */
266 "R_PPC_REL24", /* name */
267 FALSE, /* partial_inplace */
269 0x3fffffc, /* dst_mask */
270 TRUE), /* pcrel_offset */
272 /* A relative 16 bit branch; the lower two bits must be zero. */
273 HOWTO (R_PPC_REL14, /* type */
275 2, /* size (0 = byte, 1 = short, 2 = long) */
277 TRUE, /* pc_relative */
279 complain_overflow_signed, /* complain_on_overflow */
280 bfd_elf_generic_reloc, /* special_function */
281 "R_PPC_REL14", /* name */
282 FALSE, /* partial_inplace */
284 0xfffc, /* dst_mask */
285 TRUE), /* pcrel_offset */
287 /* A relative 16 bit branch. Bit 10 should be set to indicate that
288 the branch is expected to be taken. The lower two bits must be
290 HOWTO (R_PPC_REL14_BRTAKEN, /* type */
292 2, /* size (0 = byte, 1 = short, 2 = long) */
294 TRUE, /* pc_relative */
296 complain_overflow_signed, /* complain_on_overflow */
297 bfd_elf_generic_reloc, /* special_function */
298 "R_PPC_REL14_BRTAKEN", /* name */
299 FALSE, /* partial_inplace */
301 0xfffc, /* dst_mask */
302 TRUE), /* pcrel_offset */
304 /* A relative 16 bit branch. Bit 10 should be set to indicate that
305 the branch is not expected to be taken. The lower two bits must
307 HOWTO (R_PPC_REL14_BRNTAKEN, /* type */
309 2, /* size (0 = byte, 1 = short, 2 = long) */
311 TRUE, /* pc_relative */
313 complain_overflow_signed, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_PPC_REL14_BRNTAKEN",/* name */
316 FALSE, /* partial_inplace */
318 0xfffc, /* dst_mask */
319 TRUE), /* pcrel_offset */
321 /* Like R_PPC_ADDR16, but referring to the GOT table entry for the
323 HOWTO (R_PPC_GOT16, /* type */
325 1, /* size (0 = byte, 1 = short, 2 = long) */
327 FALSE, /* pc_relative */
329 complain_overflow_signed, /* complain_on_overflow */
330 bfd_elf_generic_reloc, /* special_function */
331 "R_PPC_GOT16", /* name */
332 FALSE, /* partial_inplace */
334 0xffff, /* dst_mask */
335 FALSE), /* pcrel_offset */
337 /* Like R_PPC_ADDR16_LO, but referring to the GOT table entry for
339 HOWTO (R_PPC_GOT16_LO, /* type */
341 1, /* size (0 = byte, 1 = short, 2 = long) */
343 FALSE, /* pc_relative */
345 complain_overflow_dont, /* complain_on_overflow */
346 bfd_elf_generic_reloc, /* special_function */
347 "R_PPC_GOT16_LO", /* name */
348 FALSE, /* partial_inplace */
350 0xffff, /* dst_mask */
351 FALSE), /* pcrel_offset */
353 /* Like R_PPC_ADDR16_HI, but referring to the GOT table entry for
355 HOWTO (R_PPC_GOT16_HI, /* type */
357 1, /* size (0 = byte, 1 = short, 2 = long) */
359 FALSE, /* pc_relative */
361 complain_overflow_bitfield, /* complain_on_overflow */
362 bfd_elf_generic_reloc, /* special_function */
363 "R_PPC_GOT16_HI", /* name */
364 FALSE, /* partial_inplace */
366 0xffff, /* dst_mask */
367 FALSE), /* pcrel_offset */
369 /* Like R_PPC_ADDR16_HA, but referring to the GOT table entry for
371 HOWTO (R_PPC_GOT16_HA, /* type */
373 1, /* size (0 = byte, 1 = short, 2 = long) */
375 FALSE, /* pc_relative */
377 complain_overflow_bitfield, /* complain_on_overflow */
378 ppc_elf_addr16_ha_reloc, /* special_function */
379 "R_PPC_GOT16_HA", /* name */
380 FALSE, /* partial_inplace */
382 0xffff, /* dst_mask */
383 FALSE), /* pcrel_offset */
385 /* Like R_PPC_REL24, but referring to the procedure linkage table
386 entry for the symbol. */
387 HOWTO (R_PPC_PLTREL24, /* type */
389 2, /* size (0 = byte, 1 = short, 2 = long) */
391 TRUE, /* pc_relative */
393 complain_overflow_signed, /* complain_on_overflow */
394 bfd_elf_generic_reloc, /* special_function */
395 "R_PPC_PLTREL24", /* name */
396 FALSE, /* partial_inplace */
398 0x3fffffc, /* dst_mask */
399 TRUE), /* pcrel_offset */
401 /* This is used only by the dynamic linker. The symbol should exist
402 both in the object being run and in some shared library. The
403 dynamic linker copies the data addressed by the symbol from the
404 shared library into the object, because the object being
405 run has to have the data at some particular address. */
406 HOWTO (R_PPC_COPY, /* type */
408 2, /* size (0 = byte, 1 = short, 2 = long) */
410 FALSE, /* pc_relative */
412 complain_overflow_bitfield, /* complain_on_overflow */
413 bfd_elf_generic_reloc, /* special_function */
414 "R_PPC_COPY", /* name */
415 FALSE, /* partial_inplace */
418 FALSE), /* pcrel_offset */
420 /* Like R_PPC_ADDR32, but used when setting global offset table
422 HOWTO (R_PPC_GLOB_DAT, /* type */
424 2, /* size (0 = byte, 1 = short, 2 = long) */
426 FALSE, /* pc_relative */
428 complain_overflow_bitfield, /* complain_on_overflow */
429 bfd_elf_generic_reloc, /* special_function */
430 "R_PPC_GLOB_DAT", /* name */
431 FALSE, /* partial_inplace */
433 0xffffffff, /* dst_mask */
434 FALSE), /* pcrel_offset */
436 /* Marks a procedure linkage table entry for a symbol. */
437 HOWTO (R_PPC_JMP_SLOT, /* type */
439 2, /* size (0 = byte, 1 = short, 2 = long) */
441 FALSE, /* pc_relative */
443 complain_overflow_bitfield, /* complain_on_overflow */
444 bfd_elf_generic_reloc, /* special_function */
445 "R_PPC_JMP_SLOT", /* name */
446 FALSE, /* partial_inplace */
449 FALSE), /* pcrel_offset */
451 /* Used only by the dynamic linker. When the object is run, this
452 longword is set to the load address of the object, plus the
454 HOWTO (R_PPC_RELATIVE, /* type */
456 2, /* size (0 = byte, 1 = short, 2 = long) */
458 FALSE, /* pc_relative */
460 complain_overflow_bitfield, /* complain_on_overflow */
461 bfd_elf_generic_reloc, /* special_function */
462 "R_PPC_RELATIVE", /* name */
463 FALSE, /* partial_inplace */
465 0xffffffff, /* dst_mask */
466 FALSE), /* pcrel_offset */
468 /* Like R_PPC_REL24, but uses the value of the symbol within the
469 object rather than the final value. Normally used for
470 _GLOBAL_OFFSET_TABLE_. */
471 HOWTO (R_PPC_LOCAL24PC, /* type */
473 2, /* size (0 = byte, 1 = short, 2 = long) */
475 TRUE, /* pc_relative */
477 complain_overflow_signed, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_PPC_LOCAL24PC", /* name */
480 FALSE, /* partial_inplace */
482 0x3fffffc, /* dst_mask */
483 TRUE), /* pcrel_offset */
485 /* Like R_PPC_ADDR32, but may be unaligned. */
486 HOWTO (R_PPC_UADDR32, /* type */
488 2, /* size (0 = byte, 1 = short, 2 = long) */
490 FALSE, /* pc_relative */
492 complain_overflow_bitfield, /* complain_on_overflow */
493 bfd_elf_generic_reloc, /* special_function */
494 "R_PPC_UADDR32", /* name */
495 FALSE, /* partial_inplace */
497 0xffffffff, /* dst_mask */
498 FALSE), /* pcrel_offset */
500 /* Like R_PPC_ADDR16, but may be unaligned. */
501 HOWTO (R_PPC_UADDR16, /* type */
503 1, /* size (0 = byte, 1 = short, 2 = long) */
505 FALSE, /* pc_relative */
507 complain_overflow_bitfield, /* complain_on_overflow */
508 bfd_elf_generic_reloc, /* special_function */
509 "R_PPC_UADDR16", /* name */
510 FALSE, /* partial_inplace */
512 0xffff, /* dst_mask */
513 FALSE), /* pcrel_offset */
515 /* 32-bit PC relative */
516 HOWTO (R_PPC_REL32, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 TRUE, /* pc_relative */
522 complain_overflow_bitfield, /* complain_on_overflow */
523 bfd_elf_generic_reloc, /* special_function */
524 "R_PPC_REL32", /* name */
525 FALSE, /* partial_inplace */
527 0xffffffff, /* dst_mask */
528 TRUE), /* pcrel_offset */
530 /* 32-bit relocation to the symbol's procedure linkage table.
531 FIXME: not supported. */
532 HOWTO (R_PPC_PLT32, /* type */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
536 FALSE, /* pc_relative */
538 complain_overflow_bitfield, /* complain_on_overflow */
539 bfd_elf_generic_reloc, /* special_function */
540 "R_PPC_PLT32", /* name */
541 FALSE, /* partial_inplace */
544 FALSE), /* pcrel_offset */
546 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
547 FIXME: not supported. */
548 HOWTO (R_PPC_PLTREL32, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 TRUE, /* pc_relative */
554 complain_overflow_bitfield, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC_PLTREL32", /* name */
557 FALSE, /* partial_inplace */
560 TRUE), /* pcrel_offset */
562 /* Like R_PPC_ADDR16_LO, but referring to the PLT table entry for
564 HOWTO (R_PPC_PLT16_LO, /* type */
566 1, /* size (0 = byte, 1 = short, 2 = long) */
568 FALSE, /* pc_relative */
570 complain_overflow_dont, /* complain_on_overflow */
571 bfd_elf_generic_reloc, /* special_function */
572 "R_PPC_PLT16_LO", /* name */
573 FALSE, /* partial_inplace */
575 0xffff, /* dst_mask */
576 FALSE), /* pcrel_offset */
578 /* Like R_PPC_ADDR16_HI, but referring to the PLT table entry for
580 HOWTO (R_PPC_PLT16_HI, /* type */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE, /* pc_relative */
586 complain_overflow_bitfield, /* complain_on_overflow */
587 bfd_elf_generic_reloc, /* special_function */
588 "R_PPC_PLT16_HI", /* name */
589 FALSE, /* partial_inplace */
591 0xffff, /* dst_mask */
592 FALSE), /* pcrel_offset */
594 /* Like R_PPC_ADDR16_HA, but referring to the PLT table entry for
596 HOWTO (R_PPC_PLT16_HA, /* type */
598 1, /* size (0 = byte, 1 = short, 2 = long) */
600 FALSE, /* pc_relative */
602 complain_overflow_bitfield, /* complain_on_overflow */
603 ppc_elf_addr16_ha_reloc, /* special_function */
604 "R_PPC_PLT16_HA", /* name */
605 FALSE, /* partial_inplace */
607 0xffff, /* dst_mask */
608 FALSE), /* pcrel_offset */
610 /* A sign-extended 16 bit value relative to _SDA_BASE_, for use with
612 HOWTO (R_PPC_SDAREL16, /* type */
614 1, /* size (0 = byte, 1 = short, 2 = long) */
616 FALSE, /* pc_relative */
618 complain_overflow_signed, /* complain_on_overflow */
619 bfd_elf_generic_reloc, /* special_function */
620 "R_PPC_SDAREL16", /* name */
621 FALSE, /* partial_inplace */
623 0xffff, /* dst_mask */
624 FALSE), /* pcrel_offset */
626 /* 16-bit section relative relocation. */
627 HOWTO (R_PPC_SECTOFF, /* type */
629 1, /* size (0 = byte, 1 = short, 2 = long) */
631 FALSE, /* pc_relative */
633 complain_overflow_bitfield, /* complain_on_overflow */
634 bfd_elf_generic_reloc, /* special_function */
635 "R_PPC_SECTOFF", /* name */
636 FALSE, /* partial_inplace */
638 0xffff, /* dst_mask */
639 FALSE), /* pcrel_offset */
641 /* 16-bit lower half section relative relocation. */
642 HOWTO (R_PPC_SECTOFF_LO, /* type */
644 1, /* size (0 = byte, 1 = short, 2 = long) */
646 FALSE, /* pc_relative */
648 complain_overflow_dont, /* complain_on_overflow */
649 bfd_elf_generic_reloc, /* special_function */
650 "R_PPC_SECTOFF_LO", /* name */
651 FALSE, /* partial_inplace */
653 0xffff, /* dst_mask */
654 FALSE), /* pcrel_offset */
656 /* 16-bit upper half section relative relocation. */
657 HOWTO (R_PPC_SECTOFF_HI, /* type */
659 1, /* size (0 = byte, 1 = short, 2 = long) */
661 FALSE, /* pc_relative */
663 complain_overflow_bitfield, /* complain_on_overflow */
664 bfd_elf_generic_reloc, /* special_function */
665 "R_PPC_SECTOFF_HI", /* name */
666 FALSE, /* partial_inplace */
668 0xffff, /* dst_mask */
669 FALSE), /* pcrel_offset */
671 /* 16-bit upper half adjusted section relative relocation. */
672 HOWTO (R_PPC_SECTOFF_HA, /* type */
674 1, /* size (0 = byte, 1 = short, 2 = long) */
676 FALSE, /* pc_relative */
678 complain_overflow_bitfield, /* complain_on_overflow */
679 ppc_elf_addr16_ha_reloc, /* special_function */
680 "R_PPC_SECTOFF_HA", /* name */
681 FALSE, /* partial_inplace */
683 0xffff, /* dst_mask */
684 FALSE), /* pcrel_offset */
686 /* Marker reloc for TLS. */
689 2, /* size (0 = byte, 1 = short, 2 = long) */
691 FALSE, /* pc_relative */
693 complain_overflow_dont, /* complain_on_overflow */
694 bfd_elf_generic_reloc, /* special_function */
695 "R_PPC_TLS", /* name */
696 FALSE, /* partial_inplace */
699 FALSE), /* pcrel_offset */
701 /* Computes the load module index of the load module that contains the
702 definition of its TLS sym. */
703 HOWTO (R_PPC_DTPMOD32,
705 2, /* size (0 = byte, 1 = short, 2 = long) */
707 FALSE, /* pc_relative */
709 complain_overflow_dont, /* complain_on_overflow */
710 ppc_elf_unhandled_reloc, /* special_function */
711 "R_PPC_DTPMOD32", /* name */
712 FALSE, /* partial_inplace */
714 0xffffffff, /* dst_mask */
715 FALSE), /* pcrel_offset */
717 /* Computes a dtv-relative displacement, the difference between the value
718 of sym+add and the base address of the thread-local storage block that
719 contains the definition of sym, minus 0x8000. */
720 HOWTO (R_PPC_DTPREL32,
722 2, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE, /* pc_relative */
726 complain_overflow_dont, /* complain_on_overflow */
727 ppc_elf_unhandled_reloc, /* special_function */
728 "R_PPC_DTPREL32", /* name */
729 FALSE, /* partial_inplace */
731 0xffffffff, /* dst_mask */
732 FALSE), /* pcrel_offset */
734 /* A 16 bit dtprel reloc. */
735 HOWTO (R_PPC_DTPREL16,
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE, /* pc_relative */
741 complain_overflow_signed, /* complain_on_overflow */
742 ppc_elf_unhandled_reloc, /* special_function */
743 "R_PPC_DTPREL16", /* name */
744 FALSE, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE), /* pcrel_offset */
749 /* Like DTPREL16, but no overflow. */
750 HOWTO (R_PPC_DTPREL16_LO,
752 1, /* size (0 = byte, 1 = short, 2 = long) */
754 FALSE, /* pc_relative */
756 complain_overflow_dont, /* complain_on_overflow */
757 ppc_elf_unhandled_reloc, /* special_function */
758 "R_PPC_DTPREL16_LO", /* name */
759 FALSE, /* partial_inplace */
761 0xffff, /* dst_mask */
762 FALSE), /* pcrel_offset */
764 /* Like DTPREL16_LO, but next higher group of 16 bits. */
765 HOWTO (R_PPC_DTPREL16_HI,
767 1, /* size (0 = byte, 1 = short, 2 = long) */
769 FALSE, /* pc_relative */
771 complain_overflow_dont, /* complain_on_overflow */
772 ppc_elf_unhandled_reloc, /* special_function */
773 "R_PPC_DTPREL16_HI", /* name */
774 FALSE, /* partial_inplace */
776 0xffff, /* dst_mask */
777 FALSE), /* pcrel_offset */
779 /* Like DTPREL16_HI, but adjust for low 16 bits. */
780 HOWTO (R_PPC_DTPREL16_HA,
782 1, /* size (0 = byte, 1 = short, 2 = long) */
784 FALSE, /* pc_relative */
786 complain_overflow_dont, /* complain_on_overflow */
787 ppc_elf_unhandled_reloc, /* special_function */
788 "R_PPC_DTPREL16_HA", /* name */
789 FALSE, /* partial_inplace */
791 0xffff, /* dst_mask */
792 FALSE), /* pcrel_offset */
794 /* Computes a tp-relative displacement, the difference between the value of
795 sym+add and the value of the thread pointer (r13). */
796 HOWTO (R_PPC_TPREL32,
798 2, /* size (0 = byte, 1 = short, 2 = long) */
800 FALSE, /* pc_relative */
802 complain_overflow_dont, /* complain_on_overflow */
803 ppc_elf_unhandled_reloc, /* special_function */
804 "R_PPC_TPREL32", /* name */
805 FALSE, /* partial_inplace */
807 0xffffffff, /* dst_mask */
808 FALSE), /* pcrel_offset */
810 /* A 16 bit tprel reloc. */
811 HOWTO (R_PPC_TPREL16,
813 1, /* size (0 = byte, 1 = short, 2 = long) */
815 FALSE, /* pc_relative */
817 complain_overflow_signed, /* complain_on_overflow */
818 ppc_elf_unhandled_reloc, /* special_function */
819 "R_PPC_TPREL16", /* name */
820 FALSE, /* partial_inplace */
822 0xffff, /* dst_mask */
823 FALSE), /* pcrel_offset */
825 /* Like TPREL16, but no overflow. */
826 HOWTO (R_PPC_TPREL16_LO,
828 1, /* size (0 = byte, 1 = short, 2 = long) */
830 FALSE, /* pc_relative */
832 complain_overflow_dont, /* complain_on_overflow */
833 ppc_elf_unhandled_reloc, /* special_function */
834 "R_PPC_TPREL16_LO", /* name */
835 FALSE, /* partial_inplace */
837 0xffff, /* dst_mask */
838 FALSE), /* pcrel_offset */
840 /* Like TPREL16_LO, but next higher group of 16 bits. */
841 HOWTO (R_PPC_TPREL16_HI,
843 1, /* size (0 = byte, 1 = short, 2 = long) */
845 FALSE, /* pc_relative */
847 complain_overflow_dont, /* complain_on_overflow */
848 ppc_elf_unhandled_reloc, /* special_function */
849 "R_PPC_TPREL16_HI", /* name */
850 FALSE, /* partial_inplace */
852 0xffff, /* dst_mask */
853 FALSE), /* pcrel_offset */
855 /* Like TPREL16_HI, but adjust for low 16 bits. */
856 HOWTO (R_PPC_TPREL16_HA,
858 1, /* size (0 = byte, 1 = short, 2 = long) */
860 FALSE, /* pc_relative */
862 complain_overflow_dont, /* complain_on_overflow */
863 ppc_elf_unhandled_reloc, /* special_function */
864 "R_PPC_TPREL16_HA", /* name */
865 FALSE, /* partial_inplace */
867 0xffff, /* dst_mask */
868 FALSE), /* pcrel_offset */
870 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
871 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
872 to the first entry. */
873 HOWTO (R_PPC_GOT_TLSGD16,
875 1, /* size (0 = byte, 1 = short, 2 = long) */
877 FALSE, /* pc_relative */
879 complain_overflow_signed, /* complain_on_overflow */
880 ppc_elf_unhandled_reloc, /* special_function */
881 "R_PPC_GOT_TLSGD16", /* name */
882 FALSE, /* partial_inplace */
884 0xffff, /* dst_mask */
885 FALSE), /* pcrel_offset */
887 /* Like GOT_TLSGD16, but no overflow. */
888 HOWTO (R_PPC_GOT_TLSGD16_LO,
890 1, /* size (0 = byte, 1 = short, 2 = long) */
892 FALSE, /* pc_relative */
894 complain_overflow_dont, /* complain_on_overflow */
895 ppc_elf_unhandled_reloc, /* special_function */
896 "R_PPC_GOT_TLSGD16_LO", /* name */
897 FALSE, /* partial_inplace */
899 0xffff, /* dst_mask */
900 FALSE), /* pcrel_offset */
902 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
903 HOWTO (R_PPC_GOT_TLSGD16_HI,
905 1, /* size (0 = byte, 1 = short, 2 = long) */
907 FALSE, /* pc_relative */
909 complain_overflow_dont, /* complain_on_overflow */
910 ppc_elf_unhandled_reloc, /* special_function */
911 "R_PPC_GOT_TLSGD16_HI", /* name */
912 FALSE, /* partial_inplace */
914 0xffff, /* dst_mask */
915 FALSE), /* pcrel_offset */
917 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
918 HOWTO (R_PPC_GOT_TLSGD16_HA,
920 1, /* size (0 = byte, 1 = short, 2 = long) */
922 FALSE, /* pc_relative */
924 complain_overflow_dont, /* complain_on_overflow */
925 ppc_elf_unhandled_reloc, /* special_function */
926 "R_PPC_GOT_TLSGD16_HA", /* name */
927 FALSE, /* partial_inplace */
929 0xffff, /* dst_mask */
930 FALSE), /* pcrel_offset */
932 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
933 with values (sym+add)@dtpmod and zero, and computes the offset to the
935 HOWTO (R_PPC_GOT_TLSLD16,
937 1, /* size (0 = byte, 1 = short, 2 = long) */
939 FALSE, /* pc_relative */
941 complain_overflow_signed, /* complain_on_overflow */
942 ppc_elf_unhandled_reloc, /* special_function */
943 "R_PPC_GOT_TLSLD16", /* name */
944 FALSE, /* partial_inplace */
946 0xffff, /* dst_mask */
947 FALSE), /* pcrel_offset */
949 /* Like GOT_TLSLD16, but no overflow. */
950 HOWTO (R_PPC_GOT_TLSLD16_LO,
952 1, /* size (0 = byte, 1 = short, 2 = long) */
954 FALSE, /* pc_relative */
956 complain_overflow_dont, /* complain_on_overflow */
957 ppc_elf_unhandled_reloc, /* special_function */
958 "R_PPC_GOT_TLSLD16_LO", /* name */
959 FALSE, /* partial_inplace */
961 0xffff, /* dst_mask */
962 FALSE), /* pcrel_offset */
964 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
965 HOWTO (R_PPC_GOT_TLSLD16_HI,
967 1, /* size (0 = byte, 1 = short, 2 = long) */
969 FALSE, /* pc_relative */
971 complain_overflow_dont, /* complain_on_overflow */
972 ppc_elf_unhandled_reloc, /* special_function */
973 "R_PPC_GOT_TLSLD16_HI", /* name */
974 FALSE, /* partial_inplace */
976 0xffff, /* dst_mask */
977 FALSE), /* pcrel_offset */
979 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
980 HOWTO (R_PPC_GOT_TLSLD16_HA,
982 1, /* size (0 = byte, 1 = short, 2 = long) */
984 FALSE, /* pc_relative */
986 complain_overflow_dont, /* complain_on_overflow */
987 ppc_elf_unhandled_reloc, /* special_function */
988 "R_PPC_GOT_TLSLD16_HA", /* name */
989 FALSE, /* partial_inplace */
991 0xffff, /* dst_mask */
992 FALSE), /* pcrel_offset */
994 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
995 the offset to the entry. */
996 HOWTO (R_PPC_GOT_DTPREL16,
998 1, /* size (0 = byte, 1 = short, 2 = long) */
1000 FALSE, /* pc_relative */
1002 complain_overflow_signed, /* complain_on_overflow */
1003 ppc_elf_unhandled_reloc, /* special_function */
1004 "R_PPC_GOT_DTPREL16", /* name */
1005 FALSE, /* partial_inplace */
1007 0xffff, /* dst_mask */
1008 FALSE), /* pcrel_offset */
1010 /* Like GOT_DTPREL16, but no overflow. */
1011 HOWTO (R_PPC_GOT_DTPREL16_LO,
1013 1, /* size (0 = byte, 1 = short, 2 = long) */
1015 FALSE, /* pc_relative */
1017 complain_overflow_dont, /* complain_on_overflow */
1018 ppc_elf_unhandled_reloc, /* special_function */
1019 "R_PPC_GOT_DTPREL16_LO", /* name */
1020 FALSE, /* partial_inplace */
1022 0xffff, /* dst_mask */
1023 FALSE), /* pcrel_offset */
1025 /* Like GOT_DTPREL16_LO, but next higher group of 16 bits. */
1026 HOWTO (R_PPC_GOT_DTPREL16_HI,
1027 16, /* rightshift */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE, /* pc_relative */
1032 complain_overflow_dont, /* complain_on_overflow */
1033 ppc_elf_unhandled_reloc, /* special_function */
1034 "R_PPC_GOT_DTPREL16_HI", /* name */
1035 FALSE, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE), /* pcrel_offset */
1040 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1041 HOWTO (R_PPC_GOT_DTPREL16_HA,
1042 16, /* rightshift */
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 FALSE, /* pc_relative */
1047 complain_overflow_dont, /* complain_on_overflow */
1048 ppc_elf_unhandled_reloc, /* special_function */
1049 "R_PPC_GOT_DTPREL16_HA", /* name */
1050 FALSE, /* partial_inplace */
1052 0xffff, /* dst_mask */
1053 FALSE), /* pcrel_offset */
1055 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1056 offset to the entry. */
1057 HOWTO (R_PPC_GOT_TPREL16,
1059 1, /* size (0 = byte, 1 = short, 2 = long) */
1061 FALSE, /* pc_relative */
1063 complain_overflow_signed, /* complain_on_overflow */
1064 ppc_elf_unhandled_reloc, /* special_function */
1065 "R_PPC_GOT_TPREL16", /* name */
1066 FALSE, /* partial_inplace */
1068 0xffff, /* dst_mask */
1069 FALSE), /* pcrel_offset */
1071 /* Like GOT_TPREL16, but no overflow. */
1072 HOWTO (R_PPC_GOT_TPREL16_LO,
1074 1, /* size (0 = byte, 1 = short, 2 = long) */
1076 FALSE, /* pc_relative */
1078 complain_overflow_dont, /* complain_on_overflow */
1079 ppc_elf_unhandled_reloc, /* special_function */
1080 "R_PPC_GOT_TPREL16_LO", /* name */
1081 FALSE, /* partial_inplace */
1083 0xffff, /* dst_mask */
1084 FALSE), /* pcrel_offset */
1086 /* Like GOT_TPREL16_LO, but next higher group of 16 bits. */
1087 HOWTO (R_PPC_GOT_TPREL16_HI,
1088 16, /* rightshift */
1089 1, /* size (0 = byte, 1 = short, 2 = long) */
1091 FALSE, /* pc_relative */
1093 complain_overflow_dont, /* complain_on_overflow */
1094 ppc_elf_unhandled_reloc, /* special_function */
1095 "R_PPC_GOT_TPREL16_HI", /* name */
1096 FALSE, /* partial_inplace */
1098 0xffff, /* dst_mask */
1099 FALSE), /* pcrel_offset */
1101 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1102 HOWTO (R_PPC_GOT_TPREL16_HA,
1103 16, /* rightshift */
1104 1, /* size (0 = byte, 1 = short, 2 = long) */
1106 FALSE, /* pc_relative */
1108 complain_overflow_dont, /* complain_on_overflow */
1109 ppc_elf_unhandled_reloc, /* special_function */
1110 "R_PPC_GOT_TPREL16_HA", /* name */
1111 FALSE, /* partial_inplace */
1113 0xffff, /* dst_mask */
1114 FALSE), /* pcrel_offset */
1116 /* The remaining relocs are from the Embedded ELF ABI, and are not
1117 in the SVR4 ELF ABI. */
1119 /* 32 bit value resulting from the addend minus the symbol. */
1120 HOWTO (R_PPC_EMB_NADDR32, /* type */
1122 2, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE, /* pc_relative */
1126 complain_overflow_bitfield, /* complain_on_overflow */
1127 bfd_elf_generic_reloc, /* special_function */
1128 "R_PPC_EMB_NADDR32", /* name */
1129 FALSE, /* partial_inplace */
1131 0xffffffff, /* dst_mask */
1132 FALSE), /* pcrel_offset */
1134 /* 16 bit value resulting from the addend minus the symbol. */
1135 HOWTO (R_PPC_EMB_NADDR16, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE, /* pc_relative */
1141 complain_overflow_bitfield, /* complain_on_overflow */
1142 bfd_elf_generic_reloc, /* special_function */
1143 "R_PPC_EMB_NADDR16", /* name */
1144 FALSE, /* partial_inplace */
1146 0xffff, /* dst_mask */
1147 FALSE), /* pcrel_offset */
1149 /* 16 bit value resulting from the addend minus the symbol. */
1150 HOWTO (R_PPC_EMB_NADDR16_LO, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE, /* pc_relative */
1156 complain_overflow_dont,/* complain_on_overflow */
1157 bfd_elf_generic_reloc, /* special_function */
1158 "R_PPC_EMB_ADDR16_LO", /* name */
1159 FALSE, /* partial_inplace */
1161 0xffff, /* dst_mask */
1162 FALSE), /* pcrel_offset */
1164 /* The high order 16 bits of the addend minus the symbol. */
1165 HOWTO (R_PPC_EMB_NADDR16_HI, /* type */
1166 16, /* rightshift */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE, /* pc_relative */
1171 complain_overflow_dont, /* complain_on_overflow */
1172 bfd_elf_generic_reloc, /* special_function */
1173 "R_PPC_EMB_NADDR16_HI", /* name */
1174 FALSE, /* partial_inplace */
1176 0xffff, /* dst_mask */
1177 FALSE), /* pcrel_offset */
1179 /* The high order 16 bits of the result of the addend minus the address,
1180 plus 1 if the contents of the low 16 bits, treated as a signed number,
1182 HOWTO (R_PPC_EMB_NADDR16_HA, /* type */
1183 16, /* rightshift */
1184 1, /* size (0 = byte, 1 = short, 2 = long) */
1186 FALSE, /* pc_relative */
1188 complain_overflow_dont, /* complain_on_overflow */
1189 ppc_elf_addr16_ha_reloc, /* special_function */
1190 "R_PPC_EMB_NADDR16_HA", /* name */
1191 FALSE, /* partial_inplace */
1193 0xffff, /* dst_mask */
1194 FALSE), /* pcrel_offset */
1196 /* 16 bit value resulting from allocating a 4 byte word to hold an
1197 address in the .sdata section, and returning the offset from
1198 _SDA_BASE_ for that relocation. */
1199 HOWTO (R_PPC_EMB_SDAI16, /* type */
1201 1, /* size (0 = byte, 1 = short, 2 = long) */
1203 FALSE, /* pc_relative */
1205 complain_overflow_bitfield, /* complain_on_overflow */
1206 bfd_elf_generic_reloc, /* special_function */
1207 "R_PPC_EMB_SDAI16", /* name */
1208 FALSE, /* partial_inplace */
1210 0xffff, /* dst_mask */
1211 FALSE), /* pcrel_offset */
1213 /* 16 bit value resulting from allocating a 4 byte word to hold an
1214 address in the .sdata2 section, and returning the offset from
1215 _SDA2_BASE_ for that relocation. */
1216 HOWTO (R_PPC_EMB_SDA2I16, /* type */
1218 1, /* size (0 = byte, 1 = short, 2 = long) */
1220 FALSE, /* pc_relative */
1222 complain_overflow_bitfield, /* complain_on_overflow */
1223 bfd_elf_generic_reloc, /* special_function */
1224 "R_PPC_EMB_SDA2I16", /* name */
1225 FALSE, /* partial_inplace */
1227 0xffff, /* dst_mask */
1228 FALSE), /* pcrel_offset */
1230 /* A sign-extended 16 bit value relative to _SDA2_BASE_, for use with
1231 small data items. */
1232 HOWTO (R_PPC_EMB_SDA2REL, /* type */
1234 1, /* size (0 = byte, 1 = short, 2 = long) */
1236 FALSE, /* pc_relative */
1238 complain_overflow_signed, /* complain_on_overflow */
1239 bfd_elf_generic_reloc, /* special_function */
1240 "R_PPC_EMB_SDA2REL", /* name */
1241 FALSE, /* partial_inplace */
1243 0xffff, /* dst_mask */
1244 FALSE), /* pcrel_offset */
1246 /* Relocate against either _SDA_BASE_ or _SDA2_BASE_, filling in the 16 bit
1247 signed offset from the appropriate base, and filling in the register
1248 field with the appropriate register (0, 2, or 13). */
1249 HOWTO (R_PPC_EMB_SDA21, /* type */
1251 2, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE, /* pc_relative */
1255 complain_overflow_signed, /* complain_on_overflow */
1256 bfd_elf_generic_reloc, /* special_function */
1257 "R_PPC_EMB_SDA21", /* name */
1258 FALSE, /* partial_inplace */
1260 0xffff, /* dst_mask */
1261 FALSE), /* pcrel_offset */
1263 /* Relocation not handled: R_PPC_EMB_MRKREF */
1264 /* Relocation not handled: R_PPC_EMB_RELSEC16 */
1265 /* Relocation not handled: R_PPC_EMB_RELST_LO */
1266 /* Relocation not handled: R_PPC_EMB_RELST_HI */
1267 /* Relocation not handled: R_PPC_EMB_RELST_HA */
1268 /* Relocation not handled: R_PPC_EMB_BIT_FLD */
1270 /* PC relative relocation against either _SDA_BASE_ or _SDA2_BASE_, filling
1271 in the 16 bit signed offset from the appropriate base, and filling in the
1272 register field with the appropriate register (0, 2, or 13). */
1273 HOWTO (R_PPC_EMB_RELSDA, /* type */
1275 1, /* size (0 = byte, 1 = short, 2 = long) */
1277 TRUE, /* pc_relative */
1279 complain_overflow_signed, /* complain_on_overflow */
1280 bfd_elf_generic_reloc, /* special_function */
1281 "R_PPC_EMB_RELSDA", /* name */
1282 FALSE, /* partial_inplace */
1284 0xffff, /* dst_mask */
1285 FALSE), /* pcrel_offset */
1287 /* A 16 bit relative relocation. */
1288 HOWTO (R_PPC_REL16, /* type */
1290 1, /* size (0 = byte, 1 = short, 2 = long) */
1292 TRUE, /* pc_relative */
1294 complain_overflow_bitfield, /* complain_on_overflow */
1295 bfd_elf_generic_reloc, /* special_function */
1296 "R_PPC_REL16", /* name */
1297 FALSE, /* partial_inplace */
1299 0xffff, /* dst_mask */
1300 TRUE), /* pcrel_offset */
1302 /* A 16 bit relative relocation without overflow. */
1303 HOWTO (R_PPC_REL16_LO, /* type */
1305 1, /* size (0 = byte, 1 = short, 2 = long) */
1307 TRUE, /* pc_relative */
1309 complain_overflow_dont,/* complain_on_overflow */
1310 bfd_elf_generic_reloc, /* special_function */
1311 "R_PPC_REL16_LO", /* name */
1312 FALSE, /* partial_inplace */
1314 0xffff, /* dst_mask */
1315 TRUE), /* pcrel_offset */
1317 /* The high order 16 bits of a relative address. */
1318 HOWTO (R_PPC_REL16_HI, /* type */
1319 16, /* rightshift */
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 TRUE, /* pc_relative */
1324 complain_overflow_dont, /* complain_on_overflow */
1325 bfd_elf_generic_reloc, /* special_function */
1326 "R_PPC_REL16_HI", /* name */
1327 FALSE, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 TRUE), /* pcrel_offset */
1332 /* The high order 16 bits of a relative address, plus 1 if the contents of
1333 the low 16 bits, treated as a signed number, is negative. */
1334 HOWTO (R_PPC_REL16_HA, /* type */
1335 16, /* rightshift */
1336 1, /* size (0 = byte, 1 = short, 2 = long) */
1338 TRUE, /* pc_relative */
1340 complain_overflow_dont, /* complain_on_overflow */
1341 ppc_elf_addr16_ha_reloc, /* special_function */
1342 "R_PPC_REL16_HA", /* name */
1343 FALSE, /* partial_inplace */
1345 0xffff, /* dst_mask */
1346 TRUE), /* pcrel_offset */
1348 /* GNU extension to record C++ vtable hierarchy. */
1349 HOWTO (R_PPC_GNU_VTINHERIT, /* type */
1351 0, /* size (0 = byte, 1 = short, 2 = long) */
1353 FALSE, /* pc_relative */
1355 complain_overflow_dont, /* complain_on_overflow */
1356 NULL, /* special_function */
1357 "R_PPC_GNU_VTINHERIT", /* name */
1358 FALSE, /* partial_inplace */
1361 FALSE), /* pcrel_offset */
1363 /* GNU extension to record C++ vtable member usage. */
1364 HOWTO (R_PPC_GNU_VTENTRY, /* type */
1366 0, /* size (0 = byte, 1 = short, 2 = long) */
1368 FALSE, /* pc_relative */
1370 complain_overflow_dont, /* complain_on_overflow */
1371 NULL, /* special_function */
1372 "R_PPC_GNU_VTENTRY", /* name */
1373 FALSE, /* partial_inplace */
1376 FALSE), /* pcrel_offset */
1378 /* Phony reloc to handle AIX style TOC entries. */
1379 HOWTO (R_PPC_TOC16, /* type */
1381 1, /* size (0 = byte, 1 = short, 2 = long) */
1383 FALSE, /* pc_relative */
1385 complain_overflow_signed, /* complain_on_overflow */
1386 bfd_elf_generic_reloc, /* special_function */
1387 "R_PPC_TOC16", /* name */
1388 FALSE, /* partial_inplace */
1390 0xffff, /* dst_mask */
1391 FALSE), /* pcrel_offset */
1394 /* Initialize the ppc_elf_howto_table, so that linear accesses can be done. */
1397 ppc_elf_howto_init (void)
1399 unsigned int i, type;
1402 i < sizeof (ppc_elf_howto_raw) / sizeof (ppc_elf_howto_raw[0]);
1405 type = ppc_elf_howto_raw[i].type;
1406 if (type >= (sizeof (ppc_elf_howto_table)
1407 / sizeof (ppc_elf_howto_table[0])))
1409 ppc_elf_howto_table[type] = &ppc_elf_howto_raw[i];
1413 static reloc_howto_type *
1414 ppc_elf_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
1415 bfd_reloc_code_real_type code)
1417 enum elf_ppc_reloc_type r;
1419 /* Initialize howto table if not already done. */
1420 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1421 ppc_elf_howto_init ();
1428 case BFD_RELOC_NONE: r = R_PPC_NONE; break;
1429 case BFD_RELOC_32: r = R_PPC_ADDR32; break;
1430 case BFD_RELOC_PPC_BA26: r = R_PPC_ADDR24; break;
1431 case BFD_RELOC_16: r = R_PPC_ADDR16; break;
1432 case BFD_RELOC_LO16: r = R_PPC_ADDR16_LO; break;
1433 case BFD_RELOC_HI16: r = R_PPC_ADDR16_HI; break;
1434 case BFD_RELOC_HI16_S: r = R_PPC_ADDR16_HA; break;
1435 case BFD_RELOC_PPC_BA16: r = R_PPC_ADDR14; break;
1436 case BFD_RELOC_PPC_BA16_BRTAKEN: r = R_PPC_ADDR14_BRTAKEN; break;
1437 case BFD_RELOC_PPC_BA16_BRNTAKEN: r = R_PPC_ADDR14_BRNTAKEN; break;
1438 case BFD_RELOC_PPC_B26: r = R_PPC_REL24; break;
1439 case BFD_RELOC_PPC_B16: r = R_PPC_REL14; break;
1440 case BFD_RELOC_PPC_B16_BRTAKEN: r = R_PPC_REL14_BRTAKEN; break;
1441 case BFD_RELOC_PPC_B16_BRNTAKEN: r = R_PPC_REL14_BRNTAKEN; break;
1442 case BFD_RELOC_16_GOTOFF: r = R_PPC_GOT16; break;
1443 case BFD_RELOC_LO16_GOTOFF: r = R_PPC_GOT16_LO; break;
1444 case BFD_RELOC_HI16_GOTOFF: r = R_PPC_GOT16_HI; break;
1445 case BFD_RELOC_HI16_S_GOTOFF: r = R_PPC_GOT16_HA; break;
1446 case BFD_RELOC_24_PLT_PCREL: r = R_PPC_PLTREL24; break;
1447 case BFD_RELOC_PPC_COPY: r = R_PPC_COPY; break;
1448 case BFD_RELOC_PPC_GLOB_DAT: r = R_PPC_GLOB_DAT; break;
1449 case BFD_RELOC_PPC_LOCAL24PC: r = R_PPC_LOCAL24PC; break;
1450 case BFD_RELOC_32_PCREL: r = R_PPC_REL32; break;
1451 case BFD_RELOC_32_PLTOFF: r = R_PPC_PLT32; break;
1452 case BFD_RELOC_32_PLT_PCREL: r = R_PPC_PLTREL32; break;
1453 case BFD_RELOC_LO16_PLTOFF: r = R_PPC_PLT16_LO; break;
1454 case BFD_RELOC_HI16_PLTOFF: r = R_PPC_PLT16_HI; break;
1455 case BFD_RELOC_HI16_S_PLTOFF: r = R_PPC_PLT16_HA; break;
1456 case BFD_RELOC_GPREL16: r = R_PPC_SDAREL16; break;
1457 case BFD_RELOC_16_BASEREL: r = R_PPC_SECTOFF; break;
1458 case BFD_RELOC_LO16_BASEREL: r = R_PPC_SECTOFF_LO; break;
1459 case BFD_RELOC_HI16_BASEREL: r = R_PPC_SECTOFF_HI; break;
1460 case BFD_RELOC_HI16_S_BASEREL: r = R_PPC_SECTOFF_HA; break;
1461 case BFD_RELOC_CTOR: r = R_PPC_ADDR32; break;
1462 case BFD_RELOC_PPC_TOC16: r = R_PPC_TOC16; break;
1463 case BFD_RELOC_PPC_TLS: r = R_PPC_TLS; break;
1464 case BFD_RELOC_PPC_DTPMOD: r = R_PPC_DTPMOD32; break;
1465 case BFD_RELOC_PPC_TPREL16: r = R_PPC_TPREL16; break;
1466 case BFD_RELOC_PPC_TPREL16_LO: r = R_PPC_TPREL16_LO; break;
1467 case BFD_RELOC_PPC_TPREL16_HI: r = R_PPC_TPREL16_HI; break;
1468 case BFD_RELOC_PPC_TPREL16_HA: r = R_PPC_TPREL16_HA; break;
1469 case BFD_RELOC_PPC_TPREL: r = R_PPC_TPREL32; break;
1470 case BFD_RELOC_PPC_DTPREL16: r = R_PPC_DTPREL16; break;
1471 case BFD_RELOC_PPC_DTPREL16_LO: r = R_PPC_DTPREL16_LO; break;
1472 case BFD_RELOC_PPC_DTPREL16_HI: r = R_PPC_DTPREL16_HI; break;
1473 case BFD_RELOC_PPC_DTPREL16_HA: r = R_PPC_DTPREL16_HA; break;
1474 case BFD_RELOC_PPC_DTPREL: r = R_PPC_DTPREL32; break;
1475 case BFD_RELOC_PPC_GOT_TLSGD16: r = R_PPC_GOT_TLSGD16; break;
1476 case BFD_RELOC_PPC_GOT_TLSGD16_LO: r = R_PPC_GOT_TLSGD16_LO; break;
1477 case BFD_RELOC_PPC_GOT_TLSGD16_HI: r = R_PPC_GOT_TLSGD16_HI; break;
1478 case BFD_RELOC_PPC_GOT_TLSGD16_HA: r = R_PPC_GOT_TLSGD16_HA; break;
1479 case BFD_RELOC_PPC_GOT_TLSLD16: r = R_PPC_GOT_TLSLD16; break;
1480 case BFD_RELOC_PPC_GOT_TLSLD16_LO: r = R_PPC_GOT_TLSLD16_LO; break;
1481 case BFD_RELOC_PPC_GOT_TLSLD16_HI: r = R_PPC_GOT_TLSLD16_HI; break;
1482 case BFD_RELOC_PPC_GOT_TLSLD16_HA: r = R_PPC_GOT_TLSLD16_HA; break;
1483 case BFD_RELOC_PPC_GOT_TPREL16: r = R_PPC_GOT_TPREL16; break;
1484 case BFD_RELOC_PPC_GOT_TPREL16_LO: r = R_PPC_GOT_TPREL16_LO; break;
1485 case BFD_RELOC_PPC_GOT_TPREL16_HI: r = R_PPC_GOT_TPREL16_HI; break;
1486 case BFD_RELOC_PPC_GOT_TPREL16_HA: r = R_PPC_GOT_TPREL16_HA; break;
1487 case BFD_RELOC_PPC_GOT_DTPREL16: r = R_PPC_GOT_DTPREL16; break;
1488 case BFD_RELOC_PPC_GOT_DTPREL16_LO: r = R_PPC_GOT_DTPREL16_LO; break;
1489 case BFD_RELOC_PPC_GOT_DTPREL16_HI: r = R_PPC_GOT_DTPREL16_HI; break;
1490 case BFD_RELOC_PPC_GOT_DTPREL16_HA: r = R_PPC_GOT_DTPREL16_HA; break;
1491 case BFD_RELOC_PPC_EMB_NADDR32: r = R_PPC_EMB_NADDR32; break;
1492 case BFD_RELOC_PPC_EMB_NADDR16: r = R_PPC_EMB_NADDR16; break;
1493 case BFD_RELOC_PPC_EMB_NADDR16_LO: r = R_PPC_EMB_NADDR16_LO; break;
1494 case BFD_RELOC_PPC_EMB_NADDR16_HI: r = R_PPC_EMB_NADDR16_HI; break;
1495 case BFD_RELOC_PPC_EMB_NADDR16_HA: r = R_PPC_EMB_NADDR16_HA; break;
1496 case BFD_RELOC_PPC_EMB_SDAI16: r = R_PPC_EMB_SDAI16; break;
1497 case BFD_RELOC_PPC_EMB_SDA2I16: r = R_PPC_EMB_SDA2I16; break;
1498 case BFD_RELOC_PPC_EMB_SDA2REL: r = R_PPC_EMB_SDA2REL; break;
1499 case BFD_RELOC_PPC_EMB_SDA21: r = R_PPC_EMB_SDA21; break;
1500 case BFD_RELOC_PPC_EMB_MRKREF: r = R_PPC_EMB_MRKREF; break;
1501 case BFD_RELOC_PPC_EMB_RELSEC16: r = R_PPC_EMB_RELSEC16; break;
1502 case BFD_RELOC_PPC_EMB_RELST_LO: r = R_PPC_EMB_RELST_LO; break;
1503 case BFD_RELOC_PPC_EMB_RELST_HI: r = R_PPC_EMB_RELST_HI; break;
1504 case BFD_RELOC_PPC_EMB_RELST_HA: r = R_PPC_EMB_RELST_HA; break;
1505 case BFD_RELOC_PPC_EMB_BIT_FLD: r = R_PPC_EMB_BIT_FLD; break;
1506 case BFD_RELOC_PPC_EMB_RELSDA: r = R_PPC_EMB_RELSDA; break;
1507 case BFD_RELOC_16_PCREL: r = R_PPC_REL16; break;
1508 case BFD_RELOC_LO16_PCREL: r = R_PPC_REL16_LO; break;
1509 case BFD_RELOC_HI16_PCREL: r = R_PPC_REL16_HI; break;
1510 case BFD_RELOC_HI16_S_PCREL: r = R_PPC_REL16_HA; break;
1511 case BFD_RELOC_VTABLE_INHERIT: r = R_PPC_GNU_VTINHERIT; break;
1512 case BFD_RELOC_VTABLE_ENTRY: r = R_PPC_GNU_VTENTRY; break;
1515 return ppc_elf_howto_table[r];
1518 /* Set the howto pointer for a PowerPC ELF reloc. */
1521 ppc_elf_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED,
1523 Elf_Internal_Rela *dst)
1525 /* Initialize howto table if not already done. */
1526 if (!ppc_elf_howto_table[R_PPC_ADDR32])
1527 ppc_elf_howto_init ();
1529 BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_PPC_max);
1530 cache_ptr->howto = ppc_elf_howto_table[ELF32_R_TYPE (dst->r_info)];
1533 /* Handle the R_PPC_ADDR16_HA and R_PPC_REL16_HA relocs. */
1535 static bfd_reloc_status_type
1536 ppc_elf_addr16_ha_reloc (bfd *abfd ATTRIBUTE_UNUSED,
1537 arelent *reloc_entry,
1539 void *data ATTRIBUTE_UNUSED,
1540 asection *input_section,
1542 char **error_message ATTRIBUTE_UNUSED)
1546 if (output_bfd != NULL)
1548 reloc_entry->address += input_section->output_offset;
1549 return bfd_reloc_ok;
1552 if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
1553 return bfd_reloc_outofrange;
1555 if (bfd_is_com_section (symbol->section))
1558 relocation = symbol->value;
1560 relocation += symbol->section->output_section->vma;
1561 relocation += symbol->section->output_offset;
1562 relocation += reloc_entry->addend;
1563 if (reloc_entry->howto->pc_relative)
1564 relocation -= reloc_entry->address;
1566 reloc_entry->addend += (relocation & 0x8000) << 1;
1568 return bfd_reloc_continue;
1571 static bfd_reloc_status_type
1572 ppc_elf_unhandled_reloc (bfd *abfd,
1573 arelent *reloc_entry,
1576 asection *input_section,
1578 char **error_message)
1580 /* If this is a relocatable link (output_bfd test tells us), just
1581 call the generic function. Any adjustment will be done at final
1583 if (output_bfd != NULL)
1584 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1585 input_section, output_bfd, error_message);
1587 if (error_message != NULL)
1589 static char buf[60];
1590 sprintf (buf, _("generic linker can't handle %s"),
1591 reloc_entry->howto->name);
1592 *error_message = buf;
1594 return bfd_reloc_dangerous;
1597 /* Sections created by the linker. */
1599 typedef struct elf_linker_section
1601 /* Pointer to the bfd section. */
1605 /* Associated bss section name. */
1606 const char *bss_name;
1607 /* Associated symbol name. */
1608 const char *sym_name;
1609 /* Value of symbol. */
1611 } elf_linker_section_t;
1613 /* Linked list of allocated pointer entries. This hangs off of the
1614 symbol lists, and provides allows us to return different pointers,
1615 based on different addend's. */
1617 typedef struct elf_linker_section_pointers
1619 /* next allocated pointer for this symbol */
1620 struct elf_linker_section_pointers *next;
1621 /* offset of pointer from beginning of section */
1625 /* which linker section this is */
1626 elf_linker_section_t *lsect;
1627 } elf_linker_section_pointers_t;
1629 struct ppc_elf_obj_tdata
1631 struct elf_obj_tdata elf;
1633 /* A mapping from local symbols to offsets into the various linker
1634 sections added. This is index by the symbol index. */
1635 elf_linker_section_pointers_t **linker_section_pointers;
1638 #define ppc_elf_tdata(bfd) \
1639 ((struct ppc_elf_obj_tdata *) (bfd)->tdata.any)
1641 #define elf_local_ptr_offsets(bfd) \
1642 (ppc_elf_tdata (bfd)->linker_section_pointers)
1644 /* Override the generic function because we store some extras. */
1647 ppc_elf_mkobject (bfd *abfd)
1649 bfd_size_type amt = sizeof (struct ppc_elf_obj_tdata);
1650 abfd->tdata.any = bfd_zalloc (abfd, amt);
1651 if (abfd->tdata.any == NULL)
1656 /* Fix bad default arch selected for a 32 bit input bfd when the
1657 default is 64 bit. */
1660 ppc_elf_object_p (bfd *abfd)
1662 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 64)
1664 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1666 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS32)
1668 /* Relies on arch after 64 bit default being 32 bit default. */
1669 abfd->arch_info = abfd->arch_info->next;
1670 BFD_ASSERT (abfd->arch_info->bits_per_word == 32);
1676 /* Function to set whether a module needs the -mrelocatable bit set. */
1679 ppc_elf_set_private_flags (bfd *abfd, flagword flags)
1681 BFD_ASSERT (!elf_flags_init (abfd)
1682 || elf_elfheader (abfd)->e_flags == flags);
1684 elf_elfheader (abfd)->e_flags = flags;
1685 elf_flags_init (abfd) = TRUE;
1689 /* Support for core dump NOTE sections. */
1692 ppc_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
1697 switch (note->descsz)
1702 case 268: /* Linux/PPC. */
1704 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
1707 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24);
1716 /* Make a ".reg/999" section. */
1717 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
1718 size, note->descpos + offset);
1722 ppc_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
1724 switch (note->descsz)
1729 case 128: /* Linux/PPC elf_prpsinfo. */
1730 elf_tdata (abfd)->core_program
1731 = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16);
1732 elf_tdata (abfd)->core_command
1733 = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80);
1736 /* Note that for some reason, a spurious space is tacked
1737 onto the end of the args in some (at least one anyway)
1738 implementations, so strip it off if it exists. */
1741 char *command = elf_tdata (abfd)->core_command;
1742 int n = strlen (command);
1744 if (0 < n && command[n - 1] == ' ')
1745 command[n - 1] = '\0';
1751 /* Return address for Ith PLT stub in section PLT, for relocation REL
1752 or (bfd_vma) -1 if it should not be included. */
1755 ppc_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED,
1756 const asection *plt ATTRIBUTE_UNUSED,
1759 return rel->address;
1762 /* Handle a PowerPC specific section when reading an object file. This
1763 is called when bfd_section_from_shdr finds a section with an unknown
1767 ppc_elf_section_from_shdr (bfd *abfd,
1768 Elf_Internal_Shdr *hdr,
1775 if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
1778 newsect = hdr->bfd_section;
1779 flags = bfd_get_section_flags (abfd, newsect);
1780 if (hdr->sh_flags & SHF_EXCLUDE)
1781 flags |= SEC_EXCLUDE;
1783 if (hdr->sh_type == SHT_ORDERED)
1784 flags |= SEC_SORT_ENTRIES;
1786 bfd_set_section_flags (abfd, newsect, flags);
1790 /* Set up any other section flags and such that may be necessary. */
1793 ppc_elf_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
1794 Elf_Internal_Shdr *shdr,
1797 if ((asect->flags & SEC_EXCLUDE) != 0)
1798 shdr->sh_flags |= SHF_EXCLUDE;
1800 if ((asect->flags & SEC_SORT_ENTRIES) != 0)
1801 shdr->sh_type = SHT_ORDERED;
1806 /* If we have .sbss2 or .PPC.EMB.sbss0 output sections, we
1807 need to bump up the number of section headers. */
1810 ppc_elf_additional_program_headers (bfd *abfd)
1815 s = bfd_get_section_by_name (abfd, ".sbss2");
1816 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1819 s = bfd_get_section_by_name (abfd, ".PPC.EMB.sbss0");
1820 if (s != NULL && (s->flags & SEC_ALLOC) != 0)
1826 /* Add extra PPC sections -- Note, for now, make .sbss2 and
1827 .PPC.EMB.sbss0 a normal section, and not a bss section so
1828 that the linker doesn't crater when trying to make more than
1831 static struct bfd_elf_special_section const
1832 ppc_special_sections_p[] =
1834 { ".plt", 4, 0, SHT_NOBITS, SHF_ALLOC + SHF_EXECINSTR },
1835 { NULL, 0, 0, 0, 0 }
1838 static struct bfd_elf_special_section const
1839 ppc_special_sections_s[] =
1841 { ".sdata", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
1842 { ".sbss", 5, -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
1843 { ".sdata2", 7, -2, SHT_PROGBITS, SHF_ALLOC },
1844 { ".sbss2", 6, -2, SHT_PROGBITS, SHF_ALLOC },
1845 { NULL, 0, 0, 0, 0 }
1848 static struct bfd_elf_special_section const
1849 ppc_special_sections_t[] =
1851 { ".tags", 5, 0, SHT_ORDERED, SHF_ALLOC },
1852 { NULL, 0, 0, 0, 0 }
1855 static struct bfd_elf_special_section const
1856 ppc_special_sections_other[]=
1858 { ".PPC.EMB.apuinfo", 16, 0, SHT_NOTE, 0 },
1859 { ".PPC.EMB.sdata0", 15, 0, SHT_PROGBITS, SHF_ALLOC },
1860 { ".PPC.EMB.sbss0", 14, 0, SHT_PROGBITS, SHF_ALLOC },
1861 { NULL, 0, 0, 0, 0 }
1864 static struct bfd_elf_special_section const *
1865 ppc_elf_special_sections[27]=
1882 ppc_special_sections_p, /* 'p' */
1885 ppc_special_sections_s, /* 's' */
1886 ppc_special_sections_t, /* 's' */
1893 ppc_special_sections_other, /* other */
1896 /* Very simple linked list structure for recording apuinfo values. */
1897 typedef struct apuinfo_list
1899 struct apuinfo_list *next;
1900 unsigned long value;
1904 static apuinfo_list *head;
1908 apuinfo_list_init (void)
1914 apuinfo_list_add (unsigned long value)
1916 apuinfo_list *entry = head;
1918 while (entry != NULL)
1920 if (entry->value == value)
1922 entry = entry->next;
1925 entry = bfd_malloc (sizeof (* entry));
1929 entry->value = value;
1935 apuinfo_list_length (void)
1937 apuinfo_list *entry;
1938 unsigned long count;
1940 for (entry = head, count = 0;
1942 entry = entry->next)
1948 static inline unsigned long
1949 apuinfo_list_element (unsigned long number)
1951 apuinfo_list * entry;
1955 entry = entry->next)
1958 return entry ? entry->value : 0;
1962 apuinfo_list_finish (void)
1964 apuinfo_list *entry;
1966 for (entry = head; entry;)
1968 apuinfo_list *next = entry->next;
1976 #define APUINFO_SECTION_NAME ".PPC.EMB.apuinfo"
1977 #define APUINFO_LABEL "APUinfo"
1979 /* Scan the input BFDs and create a linked list of
1980 the APUinfo values that will need to be emitted. */
1983 ppc_elf_begin_write_processing (bfd *abfd, struct bfd_link_info *link_info)
1988 unsigned num_input_sections;
1989 bfd_size_type output_section_size;
1991 unsigned num_entries;
1992 unsigned long offset;
1993 unsigned long length;
1994 const char *error_message = NULL;
1996 if (link_info == NULL)
1999 /* Scan the input bfds, looking for apuinfo sections. */
2000 num_input_sections = 0;
2001 output_section_size = 0;
2003 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2005 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2008 ++ num_input_sections;
2009 output_section_size += asec->size;
2013 /* We need at least one input sections
2014 in order to make merging worthwhile. */
2015 if (num_input_sections < 1)
2018 /* Just make sure that the output section exists as well. */
2019 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2023 /* Allocate a buffer for the contents of the input sections. */
2024 buffer = bfd_malloc (output_section_size);
2029 apuinfo_list_init ();
2031 /* Read in the input sections contents. */
2032 for (ibfd = link_info->input_bfds; ibfd; ibfd = ibfd->link_next)
2034 unsigned long datum;
2037 asec = bfd_get_section_by_name (ibfd, APUINFO_SECTION_NAME);
2041 length = asec->size;
2044 error_message = _("corrupt or empty %s section in %B");
2048 if (bfd_seek (ibfd, asec->filepos, SEEK_SET) != 0
2049 || (bfd_bread (buffer + offset, length, ibfd) != length))
2051 error_message = _("unable to read in %s section from %B");
2055 /* Process the contents of the section. */
2056 ptr = buffer + offset;
2057 error_message = _("corrupt %s section in %B");
2059 /* Verify the contents of the header. Note - we have to
2060 extract the values this way in order to allow for a
2061 host whose endian-ness is different from the target. */
2062 datum = bfd_get_32 (ibfd, ptr);
2063 if (datum != sizeof APUINFO_LABEL)
2066 datum = bfd_get_32 (ibfd, ptr + 8);
2070 if (strcmp (ptr + 12, APUINFO_LABEL) != 0)
2073 /* Get the number of bytes used for apuinfo entries. */
2074 datum = bfd_get_32 (ibfd, ptr + 4);
2075 if (datum + 20 != length)
2078 /* Make sure that we do not run off the end of the section. */
2079 if (offset + length > output_section_size)
2082 /* Scan the apuinfo section, building a list of apuinfo numbers. */
2083 for (i = 0; i < datum; i += 4)
2084 apuinfo_list_add (bfd_get_32 (ibfd, ptr + 20 + i));
2086 /* Update the offset. */
2090 error_message = NULL;
2092 /* Compute the size of the output section. */
2093 num_entries = apuinfo_list_length ();
2094 output_section_size = 20 + num_entries * 4;
2096 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2098 if (! bfd_set_section_size (abfd, asec, output_section_size))
2100 error_message = _("warning: unable to set size of %s section in %B");
2106 (*_bfd_error_handler) (error_message, ibfd, APUINFO_SECTION_NAME);
2109 /* Prevent the output section from accumulating the input sections'
2110 contents. We have already stored this in our linked list structure. */
2113 ppc_elf_write_section (bfd *abfd ATTRIBUTE_UNUSED,
2115 bfd_byte *contents ATTRIBUTE_UNUSED)
2117 return (apuinfo_list_length ()
2118 && strcmp (asec->name, APUINFO_SECTION_NAME) == 0);
2121 /* Finally we can generate the output section. */
2124 ppc_elf_final_write_processing (bfd *abfd, bfd_boolean linker ATTRIBUTE_UNUSED)
2129 unsigned num_entries;
2130 bfd_size_type length;
2132 asec = bfd_get_section_by_name (abfd, APUINFO_SECTION_NAME);
2136 if (apuinfo_list_length () == 0)
2139 length = asec->size;
2143 buffer = bfd_malloc (length);
2146 (*_bfd_error_handler)
2147 (_("failed to allocate space for new APUinfo section."));
2151 /* Create the apuinfo header. */
2152 num_entries = apuinfo_list_length ();
2153 bfd_put_32 (abfd, sizeof APUINFO_LABEL, buffer);
2154 bfd_put_32 (abfd, num_entries * 4, buffer + 4);
2155 bfd_put_32 (abfd, 0x2, buffer + 8);
2156 strcpy ((char *) buffer + 12, APUINFO_LABEL);
2159 for (i = 0; i < num_entries; i++)
2161 bfd_put_32 (abfd, apuinfo_list_element (i), buffer + length);
2165 if (length != asec->size)
2166 (*_bfd_error_handler) (_("failed to compute new APUinfo section."));
2168 if (! bfd_set_section_contents (abfd, asec, buffer, (file_ptr) 0, length))
2169 (*_bfd_error_handler) (_("failed to install new APUinfo section."));
2173 apuinfo_list_finish ();
2176 /* The following functions are specific to the ELF linker, while
2177 functions above are used generally. They appear in this file more
2178 or less in the order in which they are called. eg.
2179 ppc_elf_check_relocs is called early in the link process,
2180 ppc_elf_finish_dynamic_sections is one of the last functions
2183 /* The PPC linker needs to keep track of the number of relocs that it
2184 decides to copy as dynamic relocs in check_relocs for each symbol.
2185 This is so that it can later discard them if they are found to be
2186 unnecessary. We store the information in a field extending the
2187 regular ELF linker hash table. */
2189 struct ppc_elf_dyn_relocs
2191 struct ppc_elf_dyn_relocs *next;
2193 /* The input section of the reloc. */
2196 /* Total number of relocs copied for the input section. */
2197 bfd_size_type count;
2199 /* Number of pc-relative relocs copied for the input section. */
2200 bfd_size_type pc_count;
2203 /* Track PLT entries needed for a given symbol. We might need more
2204 than one glink entry per symbol. */
2207 struct plt_entry *next;
2209 /* -fPIC uses multiple GOT sections, one per file, called ".got2".
2210 This field stores the offset into .got2 used to initialise the
2211 GOT pointer reg. It will always be at least 32768 (and for
2212 current gcc this is the only offset used). */
2215 /* The .got2 section. */
2218 /* PLT refcount or offset. */
2221 bfd_signed_vma refcount;
2225 /* .glink stub offset. */
2226 bfd_vma glink_offset;
2229 /* Of those relocs that might be copied as dynamic relocs, this macro
2230 selects those that must be copied when linking a shared library,
2231 even when the symbol is local. */
2233 #define MUST_BE_DYN_RELOC(RTYPE) \
2234 ((RTYPE) != R_PPC_REL24 \
2235 && (RTYPE) != R_PPC_REL14 \
2236 && (RTYPE) != R_PPC_REL14_BRTAKEN \
2237 && (RTYPE) != R_PPC_REL14_BRNTAKEN \
2238 && (RTYPE) != R_PPC_REL32)
2240 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
2241 copying dynamic variables from a shared lib into an app's dynbss
2242 section, and instead use a dynamic relocation to point into the
2244 #define ELIMINATE_COPY_RELOCS 1
2246 /* PPC ELF linker hash entry. */
2248 struct ppc_elf_link_hash_entry
2250 struct elf_link_hash_entry elf;
2252 /* If this symbol is used in the linker created sections, the processor
2253 specific backend uses this field to map the field into the offset
2254 from the beginning of the section. */
2255 elf_linker_section_pointers_t *linker_section_pointer;
2257 /* Track dynamic relocs copied for this symbol. */
2258 struct ppc_elf_dyn_relocs *dyn_relocs;
2260 /* Contexts in which symbol is used in the GOT (or TOC).
2261 TLS_GD .. TLS_TLS bits are or'd into the mask as the
2262 corresponding relocs are encountered during check_relocs.
2263 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
2264 indicate the corresponding GOT entry type is not needed. */
2265 #define TLS_GD 1 /* GD reloc. */
2266 #define TLS_LD 2 /* LD reloc. */
2267 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
2268 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
2269 #define TLS_TLS 16 /* Any TLS reloc. */
2270 #define TLS_TPRELGD 32 /* TPREL reloc resulting from GD->IE. */
2274 #define ppc_elf_hash_entry(ent) ((struct ppc_elf_link_hash_entry *) (ent))
2276 /* PPC ELF linker hash table. */
2278 struct ppc_elf_link_hash_table
2280 struct elf_link_hash_table elf;
2282 /* Short-cuts to get to dynamic linker sections. */
2292 elf_linker_section_t sdata[2];
2295 /* Shortcut to .__tls_get_addr. */
2296 struct elf_link_hash_entry *tls_get_addr;
2298 /* TLS local dynamic got entry handling. */
2300 bfd_signed_vma refcount;
2304 /* Offset of PltResolve function in glink. */
2305 bfd_vma glink_pltresolve;
2307 /* Size of reserved GOT entries. */
2308 unsigned int got_header_size;
2309 /* Non-zero if allocating the header left a gap. */
2310 unsigned int got_gap;
2312 /* Whether to use new plt/got layout or not. */
2313 unsigned int new_plt:1;
2314 unsigned int old_plt:1;
2316 /* Small local sym to section mapping cache. */
2317 struct sym_sec_cache sym_sec;
2320 /* Get the PPC ELF linker hash table from a link_info structure. */
2322 #define ppc_elf_hash_table(p) \
2323 ((struct ppc_elf_link_hash_table *) (p)->hash)
2325 /* Create an entry in a PPC ELF linker hash table. */
2327 static struct bfd_hash_entry *
2328 ppc_elf_link_hash_newfunc (struct bfd_hash_entry *entry,
2329 struct bfd_hash_table *table,
2332 /* Allocate the structure if it has not already been allocated by a
2336 entry = bfd_hash_allocate (table,
2337 sizeof (struct ppc_elf_link_hash_entry));
2342 /* Call the allocation method of the superclass. */
2343 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2346 ppc_elf_hash_entry (entry)->linker_section_pointer = NULL;
2347 ppc_elf_hash_entry (entry)->dyn_relocs = NULL;
2348 ppc_elf_hash_entry (entry)->tls_mask = 0;
2354 /* Create a PPC ELF linker hash table. */
2356 static struct bfd_link_hash_table *
2357 ppc_elf_link_hash_table_create (bfd *abfd)
2359 struct ppc_elf_link_hash_table *ret;
2361 ret = bfd_zmalloc (sizeof (struct ppc_elf_link_hash_table));
2365 if (! _bfd_elf_link_hash_table_init (&ret->elf, abfd,
2366 ppc_elf_link_hash_newfunc))
2372 ret->elf.init_plt_refcount.refcount = 0;
2373 ret->elf.init_plt_refcount.glist = NULL;
2374 ret->elf.init_plt_offset.offset = 0;
2375 ret->elf.init_plt_offset.glist = NULL;
2377 ret->sdata[0].name = ".sdata";
2378 ret->sdata[0].sym_name = "_SDA_BASE_";
2379 ret->sdata[0].bss_name = ".sbss";
2381 ret->sdata[1].name = ".sdata2";
2382 ret->sdata[1].sym_name = "_SDA2_BASE_";
2383 ret->sdata[1].bss_name = ".sbss2";
2385 return &ret->elf.root;
2388 /* The powerpc .got has a blrl instruction in it. Mark it executable. */
2391 ppc_elf_create_got (bfd *abfd, struct bfd_link_info *info)
2393 struct ppc_elf_link_hash_table *htab;
2397 if (!_bfd_elf_create_got_section (abfd, info))
2400 htab = ppc_elf_hash_table (info);
2401 htab->got = s = bfd_get_section_by_name (abfd, ".got");
2405 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2406 | SEC_LINKER_CREATED);
2407 if (!bfd_set_section_flags (abfd, s, flags))
2410 flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2411 | SEC_LINKER_CREATED | SEC_READONLY);
2412 htab->relgot = bfd_make_section_with_flags (abfd, ".rela.got", flags);
2414 || ! bfd_set_section_alignment (abfd, htab->relgot, 2))
2420 /* We have to create .dynsbss and .rela.sbss here so that they get mapped
2421 to output sections (just like _bfd_elf_create_dynamic_sections has
2422 to create .dynbss and .rela.bss). */
2425 ppc_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info)
2427 struct ppc_elf_link_hash_table *htab;
2431 htab = ppc_elf_hash_table (info);
2433 if (htab->got == NULL
2434 && !ppc_elf_create_got (abfd, info))
2437 if (!_bfd_elf_create_dynamic_sections (abfd, info))
2440 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_HAS_CONTENTS
2441 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2443 s = bfd_make_section_anyway_with_flags (abfd, ".glink", flags | SEC_CODE);
2446 || !bfd_set_section_alignment (abfd, s, 4))
2449 htab->dynbss = bfd_get_section_by_name (abfd, ".dynbss");
2450 s = bfd_make_section_with_flags (abfd, ".dynsbss",
2451 SEC_ALLOC | SEC_LINKER_CREATED);
2458 htab->relbss = bfd_get_section_by_name (abfd, ".rela.bss");
2459 s = bfd_make_section_with_flags (abfd, ".rela.sbss", flags);
2462 || ! bfd_set_section_alignment (abfd, s, 2))
2466 htab->relplt = bfd_get_section_by_name (abfd, ".rela.plt");
2467 htab->plt = s = bfd_get_section_by_name (abfd, ".plt");
2471 flags = SEC_ALLOC | SEC_CODE | SEC_LINKER_CREATED;
2472 return bfd_set_section_flags (abfd, s, flags);
2475 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2478 ppc_elf_copy_indirect_symbol (const struct elf_backend_data *bed ATTRIBUTE_UNUSED,
2479 struct elf_link_hash_entry *dir,
2480 struct elf_link_hash_entry *ind)
2482 struct ppc_elf_link_hash_entry *edir, *eind;
2485 edir = (struct ppc_elf_link_hash_entry *) dir;
2486 eind = (struct ppc_elf_link_hash_entry *) ind;
2488 if (eind->dyn_relocs != NULL)
2490 if (edir->dyn_relocs != NULL)
2492 struct ppc_elf_dyn_relocs **pp;
2493 struct ppc_elf_dyn_relocs *p;
2495 if (ind->root.type == bfd_link_hash_indirect)
2498 /* Add reloc counts against the weak sym to the strong sym
2499 list. Merge any entries against the same section. */
2500 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2502 struct ppc_elf_dyn_relocs *q;
2504 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2505 if (q->sec == p->sec)
2507 q->pc_count += p->pc_count;
2508 q->count += p->count;
2515 *pp = edir->dyn_relocs;
2518 edir->dyn_relocs = eind->dyn_relocs;
2519 eind->dyn_relocs = NULL;
2522 edir->tls_mask |= eind->tls_mask;
2524 /* If called to transfer flags for a weakdef during processing
2525 of elf_adjust_dynamic_symbol, don't copy non_got_ref.
2526 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
2527 if (!(ELIMINATE_COPY_RELOCS
2528 && eind->elf.root.type != bfd_link_hash_indirect
2529 && edir->elf.dynamic_adjusted))
2530 edir->elf.non_got_ref |= eind->elf.non_got_ref;
2532 edir->elf.ref_dynamic |= eind->elf.ref_dynamic;
2533 edir->elf.ref_regular |= eind->elf.ref_regular;
2534 edir->elf.ref_regular_nonweak |= eind->elf.ref_regular_nonweak;
2535 edir->elf.needs_plt |= eind->elf.needs_plt;
2537 /* If we were called to copy over info for a weak sym, that's all. */
2538 if (eind->elf.root.type != bfd_link_hash_indirect)
2541 /* Copy over the GOT refcount entries that we may have already seen to
2542 the symbol which just became indirect. */
2543 tmp = edir->elf.got.refcount;
2546 edir->elf.got.refcount = eind->elf.got.refcount;
2547 eind->elf.got.refcount = tmp;
2550 BFD_ASSERT (eind->elf.got.refcount < 1);
2552 /* And plt entries. */
2553 if (eind->elf.plt.plist != NULL)
2555 if (edir->elf.plt.plist != NULL)
2557 struct plt_entry **entp;
2558 struct plt_entry *ent;
2560 for (entp = &eind->elf.plt.plist; (ent = *entp) != NULL; )
2562 struct plt_entry *dent;
2564 for (dent = edir->elf.plt.plist; dent != NULL; dent = dent->next)
2565 if (dent->sec == ent->sec && dent->addend == ent->addend)
2567 dent->plt.refcount += ent->plt.refcount;
2574 *entp = edir->elf.plt.plist;
2577 edir->elf.plt.plist = eind->elf.plt.plist;
2578 eind->elf.plt.plist = NULL;
2581 if (edir->elf.dynindx == -1)
2583 edir->elf.dynindx = eind->elf.dynindx;
2584 edir->elf.dynstr_index = eind->elf.dynstr_index;
2585 eind->elf.dynindx = -1;
2586 eind->elf.dynstr_index = 0;
2589 BFD_ASSERT (eind->elf.dynindx == -1);
2592 /* Return 1 if target is one of ours. */
2595 is_ppc_elf_target (const struct bfd_target *targ)
2597 extern const bfd_target bfd_elf32_powerpc_vec;
2598 extern const bfd_target bfd_elf32_powerpcle_vec;
2600 return targ == &bfd_elf32_powerpc_vec || targ == &bfd_elf32_powerpcle_vec;
2603 /* Hook called by the linker routine which adds symbols from an object
2604 file. We use it to put .comm items in .sbss, and not .bss. */
2607 ppc_elf_add_symbol_hook (bfd *abfd,
2608 struct bfd_link_info *info,
2609 Elf_Internal_Sym *sym,
2610 const char **namep ATTRIBUTE_UNUSED,
2611 flagword *flagsp ATTRIBUTE_UNUSED,
2615 if (sym->st_shndx == SHN_COMMON
2616 && !info->relocatable
2617 && sym->st_size <= elf_gp_size (abfd)
2618 && is_ppc_elf_target (info->hash->creator))
2620 /* Common symbols less than or equal to -G nn bytes are automatically
2622 struct ppc_elf_link_hash_table *htab;
2624 htab = ppc_elf_hash_table (info);
2625 if (htab->sbss == NULL)
2627 flagword flags = SEC_IS_COMMON | SEC_LINKER_CREATED;
2629 if (!htab->elf.dynobj)
2630 htab->elf.dynobj = abfd;
2632 htab->sbss = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2635 if (htab->sbss == NULL)
2640 *valp = sym->st_size;
2646 /* Create a special linker section. */
2649 ppc_elf_create_linker_section (bfd *abfd,
2650 struct bfd_link_info *info,
2652 elf_linker_section_t *lsect)
2654 struct ppc_elf_link_hash_table *htab = ppc_elf_hash_table (info);
2657 flags |= (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
2658 | SEC_LINKER_CREATED);
2660 /* Record the first bfd that needs the special sections. */
2661 if (!htab->elf.dynobj)
2662 htab->elf.dynobj = abfd;
2664 s = bfd_make_section_anyway_with_flags (htab->elf.dynobj,
2668 || !bfd_set_section_alignment (htab->elf.dynobj, s, 2))
2675 /* Find a linker generated pointer with a given addend and type. */
2677 static elf_linker_section_pointers_t *
2678 elf_find_pointer_linker_section
2679 (elf_linker_section_pointers_t *linker_pointers,
2681 elf_linker_section_t *lsect)
2683 for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
2684 if (lsect == linker_pointers->lsect && addend == linker_pointers->addend)
2685 return linker_pointers;
2690 /* Allocate a pointer to live in a linker created section. */
2693 elf_create_pointer_linker_section (bfd *abfd,
2694 elf_linker_section_t *lsect,
2695 struct elf_link_hash_entry *h,
2696 const Elf_Internal_Rela *rel)
2698 elf_linker_section_pointers_t **ptr_linker_section_ptr = NULL;
2699 elf_linker_section_pointers_t *linker_section_ptr;
2700 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
2703 BFD_ASSERT (lsect != NULL);
2705 /* Is this a global symbol? */
2708 struct ppc_elf_link_hash_entry *eh;
2710 /* Has this symbol already been allocated? If so, our work is done. */
2711 eh = (struct ppc_elf_link_hash_entry *) h;
2712 if (elf_find_pointer_linker_section (eh->linker_section_pointer,
2717 ptr_linker_section_ptr = &eh->linker_section_pointer;
2721 /* Allocation of a pointer to a local symbol. */
2722 elf_linker_section_pointers_t **ptr = elf_local_ptr_offsets (abfd);
2724 /* Allocate a table to hold the local symbols if first time. */
2727 unsigned int num_symbols = elf_tdata (abfd)->symtab_hdr.sh_info;
2730 amt *= sizeof (elf_linker_section_pointers_t *);
2731 ptr = bfd_zalloc (abfd, amt);
2736 elf_local_ptr_offsets (abfd) = ptr;
2739 /* Has this symbol already been allocated? If so, our work is done. */
2740 if (elf_find_pointer_linker_section (ptr[r_symndx],
2745 ptr_linker_section_ptr = &ptr[r_symndx];
2748 /* Allocate space for a pointer in the linker section, and allocate
2749 a new pointer record from internal memory. */
2750 BFD_ASSERT (ptr_linker_section_ptr != NULL);
2751 amt = sizeof (elf_linker_section_pointers_t);
2752 linker_section_ptr = bfd_alloc (abfd, amt);
2754 if (!linker_section_ptr)
2757 linker_section_ptr->next = *ptr_linker_section_ptr;
2758 linker_section_ptr->addend = rel->r_addend;
2759 linker_section_ptr->lsect = lsect;
2760 *ptr_linker_section_ptr = linker_section_ptr;
2762 linker_section_ptr->offset = lsect->section->size;
2763 lsect->section->size += 4;
2767 "Create pointer in linker section %s, offset = %ld, section size = %ld\n",
2768 lsect->name, (long) linker_section_ptr->offset,
2769 (long) lsect->section->size);
2776 update_local_sym_info (bfd *abfd,
2777 Elf_Internal_Shdr *symtab_hdr,
2778 unsigned long r_symndx,
2781 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
2782 char *local_got_tls_masks;
2784 if (local_got_refcounts == NULL)
2786 bfd_size_type size = symtab_hdr->sh_info;
2788 size *= sizeof (*local_got_refcounts) + sizeof (*local_got_tls_masks);
2789 local_got_refcounts = bfd_zalloc (abfd, size);
2790 if (local_got_refcounts == NULL)
2792 elf_local_got_refcounts (abfd) = local_got_refcounts;
2795 local_got_refcounts[r_symndx] += 1;
2796 local_got_tls_masks = (char *) (local_got_refcounts + symtab_hdr->sh_info);
2797 local_got_tls_masks[r_symndx] |= tls_type;
2802 update_plt_info (bfd *abfd, struct elf_link_hash_entry *h,
2803 asection *sec, bfd_vma addend)
2805 struct plt_entry *ent;
2809 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2810 if (ent->sec == sec && ent->addend == addend)
2814 bfd_size_type amt = sizeof (*ent);
2815 ent = bfd_alloc (abfd, amt);
2818 ent->next = h->plt.plist;
2820 ent->addend = addend;
2821 ent->plt.refcount = 0;
2824 ent->plt.refcount += 1;
2828 static struct plt_entry *
2829 find_plt_ent (struct elf_link_hash_entry *h, asection *sec, bfd_vma addend)
2831 struct plt_entry *ent;
2835 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
2836 if (ent->sec == sec && ent->addend == addend)
2842 bad_shared_reloc (bfd *abfd, enum elf_ppc_reloc_type r_type)
2844 (*_bfd_error_handler)
2845 (_("%B: relocation %s cannot be used when making a shared object"),
2847 ppc_elf_howto_table[r_type]->name);
2848 bfd_set_error (bfd_error_bad_value);
2851 /* Look through the relocs for a section during the first phase, and
2852 allocate space in the global offset table or procedure linkage
2856 ppc_elf_check_relocs (bfd *abfd,
2857 struct bfd_link_info *info,
2859 const Elf_Internal_Rela *relocs)
2861 struct ppc_elf_link_hash_table *htab;
2862 Elf_Internal_Shdr *symtab_hdr;
2863 struct elf_link_hash_entry **sym_hashes;
2864 const Elf_Internal_Rela *rel;
2865 const Elf_Internal_Rela *rel_end;
2866 asection *got2, *sreloc;
2868 if (info->relocatable)
2871 /* Don't do anything special with non-loaded, non-alloced sections.
2872 In particular, any relocs in such sections should not affect GOT
2873 and PLT reference counting (ie. we don't allow them to create GOT
2874 or PLT entries), there's no possibility or desire to optimize TLS
2875 relocs, and there's not much point in propagating relocs to shared
2876 libs that the dynamic linker won't relocate. */
2877 if ((sec->flags & SEC_ALLOC) == 0)
2881 _bfd_error_handler ("ppc_elf_check_relocs called for section %A in %B",
2885 /* Initialize howto table if not already done. */
2886 if (!ppc_elf_howto_table[R_PPC_ADDR32])
2887 ppc_elf_howto_init ();
2889 htab = ppc_elf_hash_table (info);
2890 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2891 sym_hashes = elf_sym_hashes (abfd);
2892 got2 = bfd_get_section_by_name (abfd, ".got2");
2895 rel_end = relocs + sec->reloc_count;
2896 for (rel = relocs; rel < rel_end; rel++)
2898 unsigned long r_symndx;
2899 enum elf_ppc_reloc_type r_type;
2900 struct elf_link_hash_entry *h;
2903 r_symndx = ELF32_R_SYM (rel->r_info);
2904 if (r_symndx < symtab_hdr->sh_info)
2907 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2909 /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
2910 This shows up in particular in an R_PPC_ADDR32 in the eabi
2913 && htab->got == NULL
2914 && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
2916 if (htab->elf.dynobj == NULL)
2917 htab->elf.dynobj = abfd;
2918 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2920 BFD_ASSERT (h == htab->elf.hgot);
2923 r_type = ELF32_R_TYPE (rel->r_info);
2926 case R_PPC_GOT_TLSLD16:
2927 case R_PPC_GOT_TLSLD16_LO:
2928 case R_PPC_GOT_TLSLD16_HI:
2929 case R_PPC_GOT_TLSLD16_HA:
2930 htab->tlsld_got.refcount += 1;
2931 tls_type = TLS_TLS | TLS_LD;
2934 case R_PPC_GOT_TLSGD16:
2935 case R_PPC_GOT_TLSGD16_LO:
2936 case R_PPC_GOT_TLSGD16_HI:
2937 case R_PPC_GOT_TLSGD16_HA:
2938 tls_type = TLS_TLS | TLS_GD;
2941 case R_PPC_GOT_TPREL16:
2942 case R_PPC_GOT_TPREL16_LO:
2943 case R_PPC_GOT_TPREL16_HI:
2944 case R_PPC_GOT_TPREL16_HA:
2946 info->flags |= DF_STATIC_TLS;
2947 tls_type = TLS_TLS | TLS_TPREL;
2950 case R_PPC_GOT_DTPREL16:
2951 case R_PPC_GOT_DTPREL16_LO:
2952 case R_PPC_GOT_DTPREL16_HI:
2953 case R_PPC_GOT_DTPREL16_HA:
2954 tls_type = TLS_TLS | TLS_DTPREL;
2956 sec->has_tls_reloc = 1;
2959 /* GOT16 relocations */
2961 case R_PPC_GOT16_LO:
2962 case R_PPC_GOT16_HI:
2963 case R_PPC_GOT16_HA:
2964 /* This symbol requires a global offset table entry. */
2965 if (htab->got == NULL)
2967 if (htab->elf.dynobj == NULL)
2968 htab->elf.dynobj = abfd;
2969 if (!ppc_elf_create_got (htab->elf.dynobj, info))
2974 h->got.refcount += 1;
2975 ppc_elf_hash_entry (h)->tls_mask |= tls_type;
2978 /* This is a global offset table entry for a local symbol. */
2979 if (!update_local_sym_info (abfd, symtab_hdr, r_symndx, tls_type))
2983 /* Indirect .sdata relocation. */
2984 case R_PPC_EMB_SDAI16:
2987 bad_shared_reloc (abfd, r_type);
2990 if (htab->sdata[0].section == NULL
2991 && !ppc_elf_create_linker_section (abfd, info, 0,
2994 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[0],
2999 /* Indirect .sdata2 relocation. */
3000 case R_PPC_EMB_SDA2I16:
3003 bad_shared_reloc (abfd, r_type);
3006 if (htab->sdata[1].section == NULL
3007 && !ppc_elf_create_linker_section (abfd, info, SEC_READONLY,
3010 if (!elf_create_pointer_linker_section (abfd, &htab->sdata[1],
3015 case R_PPC_SDAREL16:
3016 case R_PPC_EMB_SDA2REL:
3017 case R_PPC_EMB_SDA21:
3018 case R_PPC_EMB_RELSDA:
3019 case R_PPC_EMB_NADDR32:
3020 case R_PPC_EMB_NADDR16:
3021 case R_PPC_EMB_NADDR16_LO:
3022 case R_PPC_EMB_NADDR16_HI:
3023 case R_PPC_EMB_NADDR16_HA:
3026 bad_shared_reloc (abfd, r_type);
3032 case R_PPC_PLTREL24:
3033 case R_PPC_PLTREL32:
3034 case R_PPC_PLT16_LO:
3035 case R_PPC_PLT16_HI:
3036 case R_PPC_PLT16_HA:
3038 fprintf (stderr, "Reloc requires a PLT entry\n");
3040 /* This symbol requires a procedure linkage table entry. We
3041 actually build the entry in finish_dynamic_symbol,
3042 because this might be a case of linking PIC code without
3043 linking in any dynamic objects, in which case we don't
3044 need to generate a procedure linkage table after all. */
3048 /* It does not make sense to have a procedure linkage
3049 table entry for a local symbol. */
3050 (*_bfd_error_handler) (_("%B(%A+0x%lx): %s reloc against "
3054 (long) rel->r_offset,
3055 ppc_elf_howto_table[r_type]->name);
3056 bfd_set_error (bfd_error_bad_value);
3061 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3064 if (!update_plt_info (abfd, h, got2, addend))
3069 /* The following relocations don't need to propagate the
3070 relocation if linking a shared object since they are
3071 section relative. */
3073 case R_PPC_SECTOFF_LO:
3074 case R_PPC_SECTOFF_HI:
3075 case R_PPC_SECTOFF_HA:
3076 case R_PPC_DTPREL16:
3077 case R_PPC_DTPREL16_LO:
3078 case R_PPC_DTPREL16_HI:
3079 case R_PPC_DTPREL16_HA:
3084 case R_PPC_REL16_LO:
3085 case R_PPC_REL16_HI:
3086 case R_PPC_REL16_HA:
3090 /* These are just markers. */
3092 case R_PPC_EMB_MRKREF:
3097 /* These should only appear in dynamic objects. */
3099 case R_PPC_GLOB_DAT:
3100 case R_PPC_JMP_SLOT:
3101 case R_PPC_RELATIVE:
3104 /* These aren't handled yet. We'll report an error later. */
3106 case R_PPC_EMB_RELSEC16:
3107 case R_PPC_EMB_RELST_LO:
3108 case R_PPC_EMB_RELST_HI:
3109 case R_PPC_EMB_RELST_HA:
3110 case R_PPC_EMB_BIT_FLD:
3113 /* This refers only to functions defined in the shared library. */
3114 case R_PPC_LOCAL24PC:
3115 if (h && h == htab->elf.hgot)
3119 /* This relocation describes the C++ object vtable hierarchy.
3120 Reconstruct it for later use during GC. */
3121 case R_PPC_GNU_VTINHERIT:
3122 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3126 /* This relocation describes which C++ vtable entries are actually
3127 used. Record for later use during GC. */
3128 case R_PPC_GNU_VTENTRY:
3129 if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3133 /* We shouldn't really be seeing these. */
3136 info->flags |= DF_STATIC_TLS;
3140 case R_PPC_DTPMOD32:
3141 case R_PPC_DTPREL32:
3145 case R_PPC_TPREL16_LO:
3146 case R_PPC_TPREL16_HI:
3147 case R_PPC_TPREL16_HA:
3149 info->flags |= DF_STATIC_TLS;
3152 /* When creating a shared object, we must copy these
3153 relocs into the output file. We create a reloc
3154 section in dynobj and make room for the reloc. */
3157 case R_PPC_REL14_BRTAKEN:
3158 case R_PPC_REL14_BRNTAKEN:
3162 if (h == htab->elf.hgot)
3172 case R_PPC_ADDR16_LO:
3173 case R_PPC_ADDR16_HI:
3174 case R_PPC_ADDR16_HA:
3176 case R_PPC_ADDR14_BRTAKEN:
3177 case R_PPC_ADDR14_BRNTAKEN:
3180 if (h != NULL && !info->shared)
3182 /* We may need a plt entry if the symbol turns out to be
3183 a function defined in a dynamic object. */
3184 if (!update_plt_info (abfd, h, NULL, 0))
3187 /* We may need a copy reloc too. */
3192 /* If we are creating a shared library, and this is a reloc
3193 against a global symbol, or a non PC relative reloc
3194 against a local symbol, then we need to copy the reloc
3195 into the shared library. However, if we are linking with
3196 -Bsymbolic, we do not need to copy a reloc against a
3197 global symbol which is defined in an object we are
3198 including in the link (i.e., DEF_REGULAR is set). At
3199 this point we have not seen all the input files, so it is
3200 possible that DEF_REGULAR is not set now but will be set
3201 later (it is never cleared). In case of a weak definition,
3202 DEF_REGULAR may be cleared later by a strong definition in
3203 a shared library. We account for that possibility below by
3204 storing information in the dyn_relocs field of the hash
3205 table entry. A similar situation occurs when creating
3206 shared libraries and symbol visibility changes render the
3209 If on the other hand, we are creating an executable, we
3210 may need to keep relocations for symbols satisfied by a
3211 dynamic library if we manage to avoid copy relocs for the
3214 && (MUST_BE_DYN_RELOC (r_type)
3216 && (! info->symbolic
3217 || h->root.type == bfd_link_hash_defweak
3218 || !h->def_regular))))
3219 || (ELIMINATE_COPY_RELOCS
3222 && (h->root.type == bfd_link_hash_defweak
3223 || !h->def_regular)))
3225 struct ppc_elf_dyn_relocs *p;
3226 struct ppc_elf_dyn_relocs **head;
3230 "ppc_elf_check_relocs needs to "
3231 "create relocation for %s\n",
3232 (h && h->root.root.string
3233 ? h->root.root.string : "<unknown>"));
3239 name = (bfd_elf_string_from_elf_section
3241 elf_elfheader (abfd)->e_shstrndx,
3242 elf_section_data (sec)->rel_hdr.sh_name));
3246 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
3247 && strcmp (bfd_get_section_name (abfd, sec),
3250 if (htab->elf.dynobj == NULL)
3251 htab->elf.dynobj = abfd;
3252 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
3257 flags = (SEC_HAS_CONTENTS | SEC_READONLY
3258 | SEC_IN_MEMORY | SEC_LINKER_CREATED
3259 | SEC_ALLOC | SEC_LOAD);
3260 sreloc = bfd_make_section_with_flags (htab->elf.dynobj,
3264 || ! bfd_set_section_alignment (htab->elf.dynobj,
3268 elf_section_data (sec)->sreloc = sreloc;
3271 /* If this is a global symbol, we count the number of
3272 relocations we need for this symbol. */
3275 head = &ppc_elf_hash_entry (h)->dyn_relocs;
3279 /* Track dynamic relocs needed for local syms too.
3280 We really need local syms available to do this
3284 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
3289 head = ((struct ppc_elf_dyn_relocs **)
3290 &elf_section_data (s)->local_dynrel);
3294 if (p == NULL || p->sec != sec)
3296 p = bfd_alloc (htab->elf.dynobj, sizeof *p);
3307 if (!MUST_BE_DYN_RELOC (r_type))
3318 /* Merge backend specific data from an object file to the output
3319 object file when linking. */
3322 ppc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
3328 if (!is_ppc_elf_target (ibfd->xvec)
3329 || !is_ppc_elf_target (obfd->xvec))
3332 /* Check if we have the same endianess. */
3333 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3336 new_flags = elf_elfheader (ibfd)->e_flags;
3337 old_flags = elf_elfheader (obfd)->e_flags;
3338 if (!elf_flags_init (obfd))
3340 /* First call, no flags set. */
3341 elf_flags_init (obfd) = TRUE;
3342 elf_elfheader (obfd)->e_flags = new_flags;
3345 /* Compatible flags are ok. */
3346 else if (new_flags == old_flags)
3349 /* Incompatible flags. */
3352 /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib
3353 to be linked with either. */
3355 if ((new_flags & EF_PPC_RELOCATABLE) != 0
3356 && (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
3359 (*_bfd_error_handler)
3360 (_("%B: compiled with -mrelocatable and linked with "
3361 "modules compiled normally"), ibfd);
3363 else if ((new_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0
3364 && (old_flags & EF_PPC_RELOCATABLE) != 0)
3367 (*_bfd_error_handler)
3368 (_("%B: compiled normally and linked with "
3369 "modules compiled with -mrelocatable"), ibfd);
3372 /* The output is -mrelocatable-lib iff both the input files are. */
3373 if (! (new_flags & EF_PPC_RELOCATABLE_LIB))
3374 elf_elfheader (obfd)->e_flags &= ~EF_PPC_RELOCATABLE_LIB;
3376 /* The output is -mrelocatable iff it can't be -mrelocatable-lib,
3377 but each input file is either -mrelocatable or -mrelocatable-lib. */
3378 if (! (elf_elfheader (obfd)->e_flags & EF_PPC_RELOCATABLE_LIB)
3379 && (new_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE))
3380 && (old_flags & (EF_PPC_RELOCATABLE_LIB | EF_PPC_RELOCATABLE)))
3381 elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE;
3383 /* Do not warn about eabi vs. V.4 mismatch, just or in the bit if
3384 any module uses it. */
3385 elf_elfheader (obfd)->e_flags |= (new_flags & EF_PPC_EMB);
3387 new_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3388 old_flags &= ~(EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB | EF_PPC_EMB);
3390 /* Warn about any other mismatches. */
3391 if (new_flags != old_flags)
3394 (*_bfd_error_handler)
3395 (_("%B: uses different e_flags (0x%lx) fields "
3396 "than previous modules (0x%lx)"),
3397 ibfd, (long) new_flags, (long) old_flags);
3402 bfd_set_error (bfd_error_bad_value);
3410 /* Choose which PLT scheme to use, and set .plt flags appropriately.
3411 Returns -1 on error, 0 for old PLT, 1 for new PLT. */
3413 ppc_elf_select_plt_layout (bfd *output_bfd ATTRIBUTE_UNUSED,
3414 struct bfd_link_info *info,
3417 struct ppc_elf_link_hash_table *htab;
3419 htab = ppc_elf_hash_table (info);
3420 if (force_old_plt || !htab->new_plt)
3425 flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
3426 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
3428 /* The new PLT is a loaded section. */
3429 if (htab->plt != NULL
3430 && !bfd_set_section_flags (htab->elf.dynobj, htab->plt, flags))
3433 /* The new GOT is not executable. */
3434 if (htab->got != NULL
3435 && !bfd_set_section_flags (htab->elf.dynobj, htab->got, flags))
3440 /* Stop an unused .glink section from affecting .text alignment. */
3441 if (htab->glink != NULL
3442 && !bfd_set_section_alignment (htab->elf.dynobj, htab->glink, 0))
3445 return !htab->old_plt;
3448 /* Return the section that should be marked against GC for a given
3452 ppc_elf_gc_mark_hook (asection *sec,
3453 struct bfd_link_info *info ATTRIBUTE_UNUSED,
3454 Elf_Internal_Rela *rel,
3455 struct elf_link_hash_entry *h,
3456 Elf_Internal_Sym *sym)
3460 switch (ELF32_R_TYPE (rel->r_info))
3462 case R_PPC_GNU_VTINHERIT:
3463 case R_PPC_GNU_VTENTRY:
3467 switch (h->root.type)
3469 case bfd_link_hash_defined:
3470 case bfd_link_hash_defweak:
3471 return h->root.u.def.section;
3473 case bfd_link_hash_common:
3474 return h->root.u.c.p->section;
3482 return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
3487 /* Update the got, plt and dynamic reloc reference counts for the
3488 section being removed. */
3491 ppc_elf_gc_sweep_hook (bfd *abfd,
3492 struct bfd_link_info *info,
3494 const Elf_Internal_Rela *relocs)
3496 struct ppc_elf_link_hash_table *htab;
3497 Elf_Internal_Shdr *symtab_hdr;
3498 struct elf_link_hash_entry **sym_hashes;
3499 bfd_signed_vma *local_got_refcounts;
3500 const Elf_Internal_Rela *rel, *relend;
3503 if ((sec->flags & SEC_ALLOC) == 0)
3506 elf_section_data (sec)->local_dynrel = NULL;
3508 htab = ppc_elf_hash_table (info);
3509 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3510 sym_hashes = elf_sym_hashes (abfd);
3511 local_got_refcounts = elf_local_got_refcounts (abfd);
3512 got2 = bfd_get_section_by_name (abfd, ".got2");
3514 relend = relocs + sec->reloc_count;
3515 for (rel = relocs; rel < relend; rel++)
3517 unsigned long r_symndx;
3518 enum elf_ppc_reloc_type r_type;
3519 struct elf_link_hash_entry *h = NULL;
3521 r_symndx = ELF32_R_SYM (rel->r_info);
3522 if (r_symndx >= symtab_hdr->sh_info)
3524 struct ppc_elf_dyn_relocs **pp, *p;
3525 struct ppc_elf_link_hash_entry *eh;
3527 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3528 while (h->root.type == bfd_link_hash_indirect
3529 || h->root.type == bfd_link_hash_warning)
3530 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3531 eh = (struct ppc_elf_link_hash_entry *) h;
3533 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3536 /* Everything must go for SEC. */
3542 r_type = ELF32_R_TYPE (rel->r_info);
3545 case R_PPC_GOT_TLSLD16:
3546 case R_PPC_GOT_TLSLD16_LO:
3547 case R_PPC_GOT_TLSLD16_HI:
3548 case R_PPC_GOT_TLSLD16_HA:
3549 htab->tlsld_got.refcount -= 1;
3552 case R_PPC_GOT_TLSGD16:
3553 case R_PPC_GOT_TLSGD16_LO:
3554 case R_PPC_GOT_TLSGD16_HI:
3555 case R_PPC_GOT_TLSGD16_HA:
3556 case R_PPC_GOT_TPREL16:
3557 case R_PPC_GOT_TPREL16_LO:
3558 case R_PPC_GOT_TPREL16_HI:
3559 case R_PPC_GOT_TPREL16_HA:
3560 case R_PPC_GOT_DTPREL16:
3561 case R_PPC_GOT_DTPREL16_LO:
3562 case R_PPC_GOT_DTPREL16_HI:
3563 case R_PPC_GOT_DTPREL16_HA:
3565 case R_PPC_GOT16_LO:
3566 case R_PPC_GOT16_HI:
3567 case R_PPC_GOT16_HA:
3570 if (h->got.refcount > 0)
3573 else if (local_got_refcounts != NULL)
3575 if (local_got_refcounts[r_symndx] > 0)
3576 local_got_refcounts[r_symndx]--;
3582 case R_PPC_REL14_BRTAKEN:
3583 case R_PPC_REL14_BRNTAKEN:
3585 if (h == NULL || h == htab->elf.hgot)
3592 case R_PPC_ADDR16_LO:
3593 case R_PPC_ADDR16_HI:
3594 case R_PPC_ADDR16_HA:
3596 case R_PPC_ADDR14_BRTAKEN:
3597 case R_PPC_ADDR14_BRNTAKEN:
3601 case R_PPC_PLTREL24:
3602 case R_PPC_PLT16_LO:
3603 case R_PPC_PLT16_HI:
3604 case R_PPC_PLT16_HA:
3607 bfd_vma addend = r_type == R_PPC_PLTREL24 ? rel->r_addend : 0;
3608 struct plt_entry *ent = find_plt_ent (h, got2, addend);
3609 if (ent->plt.refcount > 0)
3610 ent->plt.refcount -= 1;
3621 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
3624 ppc_elf_tls_setup (bfd *obfd, struct bfd_link_info *info)
3626 struct ppc_elf_link_hash_table *htab;
3628 htab = ppc_elf_hash_table (info);
3630 && htab->plt != NULL
3631 && htab->plt->output_section != NULL)
3633 elf_section_type (htab->plt->output_section) = SHT_PROGBITS;
3634 elf_section_flags (htab->plt->output_section) = SHF_ALLOC + SHF_WRITE;
3637 htab->tls_get_addr = elf_link_hash_lookup (&htab->elf, "__tls_get_addr",
3638 FALSE, FALSE, TRUE);
3639 return _bfd_elf_tls_setup (obfd, info);
3642 /* Run through all the TLS relocs looking for optimization
3646 ppc_elf_tls_optimize (bfd *obfd ATTRIBUTE_UNUSED,
3647 struct bfd_link_info *info)
3651 struct ppc_elf_link_hash_table *htab;
3653 if (info->relocatable || info->shared)
3656 htab = ppc_elf_hash_table (info);
3657 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
3659 Elf_Internal_Sym *locsyms = NULL;
3660 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3662 for (sec = ibfd->sections; sec != NULL; sec = sec->next)
3663 if (sec->has_tls_reloc && !bfd_is_abs_section (sec->output_section))
3665 Elf_Internal_Rela *relstart, *rel, *relend;
3666 int expecting_tls_get_addr;
3668 /* Read the relocations. */
3669 relstart = _bfd_elf_link_read_relocs (ibfd, sec, NULL, NULL,
3671 if (relstart == NULL)
3674 expecting_tls_get_addr = 0;
3675 relend = relstart + sec->reloc_count;
3676 for (rel = relstart; rel < relend; rel++)
3678 enum elf_ppc_reloc_type r_type;
3679 unsigned long r_symndx;
3680 struct elf_link_hash_entry *h = NULL;
3682 char tls_set, tls_clear;
3683 bfd_boolean is_local;
3685 r_symndx = ELF32_R_SYM (rel->r_info);
3686 if (r_symndx >= symtab_hdr->sh_info)
3688 struct elf_link_hash_entry **sym_hashes;
3690 sym_hashes = elf_sym_hashes (ibfd);
3691 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3692 while (h->root.type == bfd_link_hash_indirect
3693 || h->root.type == bfd_link_hash_warning)
3694 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3702 r_type = ELF32_R_TYPE (rel->r_info);
3705 case R_PPC_GOT_TLSLD16:
3706 case R_PPC_GOT_TLSLD16_LO:
3707 case R_PPC_GOT_TLSLD16_HI:
3708 case R_PPC_GOT_TLSLD16_HA:
3709 /* These relocs should never be against a symbol
3710 defined in a shared lib. Leave them alone if
3711 that turns out to be the case. */
3712 expecting_tls_get_addr = 0;
3713 htab->tlsld_got.refcount -= 1;
3720 expecting_tls_get_addr = 1;
3723 case R_PPC_GOT_TLSGD16:
3724 case R_PPC_GOT_TLSGD16_LO:
3725 case R_PPC_GOT_TLSGD16_HI:
3726 case R_PPC_GOT_TLSGD16_HA:
3732 tls_set = TLS_TLS | TLS_TPRELGD;
3734 expecting_tls_get_addr = 1;
3737 case R_PPC_GOT_TPREL16:
3738 case R_PPC_GOT_TPREL16_LO:
3739 case R_PPC_GOT_TPREL16_HI:
3740 case R_PPC_GOT_TPREL16_HA:
3741 expecting_tls_get_addr = 0;
3746 tls_clear = TLS_TPREL;
3753 case R_PPC_REL14_BRTAKEN:
3754 case R_PPC_REL14_BRNTAKEN:
3756 if (expecting_tls_get_addr
3758 && h == htab->tls_get_addr)
3760 struct plt_entry *ent = find_plt_ent (h, NULL, 0);
3761 if (ent != NULL && ent->plt.refcount > 0)
3762 ent->plt.refcount -= 1;
3764 expecting_tls_get_addr = 0;
3768 expecting_tls_get_addr = 0;
3776 /* We managed to get rid of a got entry. */
3777 if (h->got.refcount > 0)
3778 h->got.refcount -= 1;
3780 tls_mask = &ppc_elf_hash_entry (h)->tls_mask;
3784 Elf_Internal_Sym *sym;
3785 bfd_signed_vma *lgot_refs;
3788 if (locsyms == NULL)
3790 locsyms = (Elf_Internal_Sym *) symtab_hdr->contents;
3791 if (locsyms == NULL)
3792 locsyms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3793 symtab_hdr->sh_info,
3794 0, NULL, NULL, NULL);
3795 if (locsyms == NULL)
3797 if (elf_section_data (sec)->relocs != relstart)
3802 sym = locsyms + r_symndx;
3803 lgot_refs = elf_local_got_refcounts (ibfd);
3804 if (lgot_refs == NULL)
3808 /* We managed to get rid of a got entry. */
3809 if (lgot_refs[r_symndx] > 0)
3810 lgot_refs[r_symndx] -= 1;
3812 lgot_masks = (char *) (lgot_refs + symtab_hdr->sh_info);
3813 tls_mask = &lgot_masks[r_symndx];
3816 *tls_mask |= tls_set;
3817 *tls_mask &= ~tls_clear;
3820 if (elf_section_data (sec)->relocs != relstart)
3825 && (symtab_hdr->contents != (unsigned char *) locsyms))
3827 if (!info->keep_memory)
3830 symtab_hdr->contents = (unsigned char *) locsyms;
3836 /* Adjust a symbol defined by a dynamic object and referenced by a
3837 regular object. The current definition is in some section of the
3838 dynamic object, but we're not including those sections. We have to
3839 change the definition to something the rest of the link can
3843 ppc_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
3844 struct elf_link_hash_entry *h)
3846 struct ppc_elf_link_hash_table *htab;
3848 unsigned int power_of_two;
3851 fprintf (stderr, "ppc_elf_adjust_dynamic_symbol called for %s\n",
3852 h->root.root.string);
3855 /* Make sure we know what is going on here. */
3856 htab = ppc_elf_hash_table (info);
3857 BFD_ASSERT (htab->elf.dynobj != NULL
3859 || h->u.weakdef != NULL
3862 && !h->def_regular)));
3864 /* Deal with function syms. */
3865 if (h->type == STT_FUNC
3868 /* Clear procedure linkage table information for any symbol that
3869 won't need a .plt entry. */
3870 struct plt_entry *ent;
3871 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
3872 if (ent->plt.refcount > 0)
3875 || SYMBOL_CALLS_LOCAL (info, h)
3876 || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
3877 && h->root.type == bfd_link_hash_undefweak))
3879 /* A PLT entry is not required/allowed when:
3881 1. We are not using ld.so; because then the PLT entry
3882 can't be set up, so we can't use one. In this case,
3883 ppc_elf_adjust_dynamic_symbol won't even be called.
3885 2. GC has rendered the entry unused.
3887 3. We know for certain that a call to this symbol
3888 will go to this object, or will remain undefined. */
3889 h->plt.plist = NULL;
3895 h->plt.plist = NULL;
3897 /* If this is a weak symbol, and there is a real definition, the
3898 processor independent code will have arranged for us to see the
3899 real definition first, and we can just use the same value. */
3900 if (h->u.weakdef != NULL)
3902 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3903 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3904 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3905 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3906 if (ELIMINATE_COPY_RELOCS)
3907 h->non_got_ref = h->u.weakdef->non_got_ref;
3911 /* This is a reference to a symbol defined by a dynamic object which
3912 is not a function. */
3914 /* If we are creating a shared library, we must presume that the
3915 only references to the symbol are via the global offset table.
3916 For such cases we need not do anything here; the relocations will
3917 be handled correctly by relocate_section. */
3921 /* If there are no references to this symbol that do not use the
3922 GOT, we don't need to generate a copy reloc. */
3923 if (!h->non_got_ref)
3926 if (ELIMINATE_COPY_RELOCS)
3928 struct ppc_elf_dyn_relocs *p;
3929 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
3931 s = p->sec->output_section;
3932 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3936 /* If we didn't find any dynamic relocs in read-only sections, then
3937 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3945 /* We must allocate the symbol in our .dynbss section, which will
3946 become part of the .bss section of the executable. There will be
3947 an entry for this symbol in the .dynsym section. The dynamic
3948 object will contain position independent code, so all references
3949 from the dynamic object to this symbol will go through the global
3950 offset table. The dynamic linker will use the .dynsym entry to
3951 determine the address it must put in the global offset table, so
3952 both the dynamic object and the regular object will refer to the
3953 same memory location for the variable.
3955 Of course, if the symbol is sufficiently small, we must instead
3956 allocate it in .sbss. FIXME: It would be better to do this if and
3957 only if there were actually SDAREL relocs for that symbol. */
3959 if (h->size <= elf_gp_size (htab->elf.dynobj))
3963 BFD_ASSERT (s != NULL);
3965 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3966 copy the initial value out of the dynamic object and into the
3967 runtime process image. We need to remember the offset into the
3968 .rela.bss section we are going to use. */
3969 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3973 if (h->size <= elf_gp_size (htab->elf.dynobj))
3974 srel = htab->relsbss;
3976 srel = htab->relbss;
3977 BFD_ASSERT (srel != NULL);
3978 srel->size += sizeof (Elf32_External_Rela);
3982 /* We need to figure out the alignment required for this symbol. I
3983 have no idea how ELF linkers handle this. */
3984 power_of_two = bfd_log2 (h->size);
3985 if (power_of_two > 4)
3988 /* Apply the required alignment. */
3989 s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
3990 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
3992 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
3996 /* Define the symbol as being at this point in the section. */
3997 h->root.u.def.section = s;
3998 h->root.u.def.value = s->size;
4000 /* Increment the section size to make room for the symbol. */
4006 /* Allocate NEED contiguous space in .got, and return the offset.
4007 Handles allocation of the got header when crossing 32k. */
4010 allocate_got (struct ppc_elf_link_hash_table *htab, unsigned int need)
4013 unsigned int max_before_header = 32768;
4016 max_before_header = 32764;
4018 if (need <= htab->got_gap)
4020 where = max_before_header - htab->got_gap;
4021 htab->got_gap -= need;
4025 if (htab->got->size + need > max_before_header
4026 && htab->got->size <= max_before_header)
4028 htab->got_gap = max_before_header - htab->got->size;
4029 htab->got->size = max_before_header + htab->got_header_size;
4031 where = htab->got->size;
4032 htab->got->size += need;
4037 /* Allocate space in associated reloc sections for dynamic relocs. */
4040 allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
4042 struct bfd_link_info *info = inf;
4043 struct ppc_elf_link_hash_entry *eh;
4044 struct ppc_elf_link_hash_table *htab;
4045 struct ppc_elf_dyn_relocs *p;
4047 if (h->root.type == bfd_link_hash_indirect)
4050 if (h->root.type == bfd_link_hash_warning)
4051 /* When warning symbols are created, they **replace** the "real"
4052 entry in the hash table, thus we never get to see the real
4053 symbol in a hash traversal. So look at it now. */
4054 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4056 htab = ppc_elf_hash_table (info);
4057 if (htab->elf.dynamic_sections_created)
4059 struct plt_entry *ent;
4060 bfd_boolean doneone = FALSE;
4061 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
4062 if (ent->plt.refcount > 0)
4064 /* Make sure this symbol is output as a dynamic symbol. */
4065 if (h->dynindx == -1
4066 && !h->forced_local)
4068 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4073 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, 0, h))
4075 asection *s = htab->plt;
4079 ent->plt.offset = s->size;
4087 h->root.u.def.section = s;
4088 h->root.u.def.value = s->size;
4090 ent->glink_offset = s->size;
4091 s->size += GLINK_ENTRY_SIZE;
4095 /* If this is the first .plt entry, make room for the
4096 special first entry. */
4098 s->size += PLT_INITIAL_ENTRY_SIZE;
4100 /* The PowerPC PLT is actually composed of two parts, the
4101 first part is 2 words (for a load and a jump), and then
4102 there is a remaining word available at the end. */
4103 ent->plt.offset = (PLT_INITIAL_ENTRY_SIZE
4105 * ((s->size - PLT_INITIAL_ENTRY_SIZE)
4106 / PLT_ENTRY_SIZE)));
4108 /* If this symbol is not defined in a regular file, and we
4109 are not generating a shared library, then set the symbol
4110 to this location in the .plt. This is required to make
4111 function pointers compare as equal between the normal
4112 executable and the shared library. */
4116 h->root.u.def.section = s;
4117 h->root.u.def.value = ent->plt.offset;
4120 /* Make room for this entry. After the 8192nd entry, room
4121 for two entries is allocated. */
4124 s->size += PLT_ENTRY_SIZE;
4125 if ((s->size - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE
4126 > PLT_NUM_SINGLE_ENTRIES)
4127 s->size += PLT_ENTRY_SIZE;
4131 /* We also need to make an entry in the .rela.plt section. */
4134 htab->relplt->size += sizeof (Elf32_External_Rela);
4139 ent->plt.offset = (bfd_vma) -1;
4143 h->plt.plist = NULL;
4150 h->plt.plist = NULL;
4154 eh = (struct ppc_elf_link_hash_entry *) h;
4155 if (eh->elf.got.refcount > 0)
4157 /* Make sure this symbol is output as a dynamic symbol. */
4158 if (eh->elf.dynindx == -1
4159 && !eh->elf.forced_local)
4161 if (!bfd_elf_link_record_dynamic_symbol (info, &eh->elf))
4165 if (eh->tls_mask == (TLS_TLS | TLS_LD)
4166 && !eh->elf.def_dynamic)
4167 /* If just an LD reloc, we'll just use htab->tlsld_got.offset. */
4168 eh->elf.got.offset = (bfd_vma) -1;
4172 unsigned int need = 0;
4173 if ((eh->tls_mask & TLS_TLS) != 0)
4175 if ((eh->tls_mask & TLS_LD) != 0)
4177 if ((eh->tls_mask & TLS_GD) != 0)
4179 if ((eh->tls_mask & (TLS_TPREL | TLS_TPRELGD)) != 0)
4181 if ((eh->tls_mask & TLS_DTPREL) != 0)
4186 eh->elf.got.offset = allocate_got (htab, need);
4187 dyn = htab->elf.dynamic_sections_created;
4189 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, &eh->elf))
4190 && (ELF_ST_VISIBILITY (eh->elf.other) == STV_DEFAULT
4191 || eh->elf.root.type != bfd_link_hash_undefweak))
4193 /* All the entries we allocated need relocs.
4194 Except LD only needs one. */
4195 if ((eh->tls_mask & TLS_LD) != 0)
4197 htab->relgot->size += need * (sizeof (Elf32_External_Rela) / 4);
4202 eh->elf.got.offset = (bfd_vma) -1;
4204 if (eh->dyn_relocs == NULL)
4207 /* In the shared -Bsymbolic case, discard space allocated for
4208 dynamic pc-relative relocs against symbols which turn out to be
4209 defined in regular objects. For the normal shared case, discard
4210 space for relocs that have become local due to symbol visibility
4215 /* Relocs that use pc_count are those that appear on a call insn,
4216 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
4217 generated via assembly. We want calls to protected symbols to
4218 resolve directly to the function rather than going via the plt.
4219 If people want function pointer comparisons to work as expected
4220 then they should avoid writing weird assembly. */
4221 if (SYMBOL_CALLS_LOCAL (info, h))
4223 struct ppc_elf_dyn_relocs **pp;
4225 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
4227 p->count -= p->pc_count;
4236 /* Also discard relocs on undefined weak syms with non-default
4238 if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
4239 && h->root.type == bfd_link_hash_undefweak)
4240 eh->dyn_relocs = NULL;
4242 /* Make sure undefined weak symbols are output as a dynamic symbol
4245 && eh->dyn_relocs != NULL
4247 && h->root.type == bfd_link_hash_undefweak
4248 && !h->forced_local)
4250 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4254 else if (ELIMINATE_COPY_RELOCS)
4256 /* For the non-shared case, discard space for relocs against
4257 symbols which turn out to need copy relocs or are not
4264 /* Make sure this symbol is output as a dynamic symbol.
4265 Undefined weak syms won't yet be marked as dynamic. */
4266 if (h->dynindx == -1
4267 && !h->forced_local)
4269 if (! bfd_elf_link_record_dynamic_symbol (info, h))
4273 /* If that succeeded, we know we'll be keeping all the
4275 if (h->dynindx != -1)
4279 eh->dyn_relocs = NULL;
4284 /* Finally, allocate space. */
4285 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4287 asection *sreloc = elf_section_data (p->sec)->sreloc;
4288 sreloc->size += p->count * sizeof (Elf32_External_Rela);
4294 /* Find any dynamic relocs that apply to read-only sections. */
4297 readonly_dynrelocs (struct elf_link_hash_entry *h, void *info)
4299 struct ppc_elf_dyn_relocs *p;
4301 if (h->root.type == bfd_link_hash_indirect)
4304 if (h->root.type == bfd_link_hash_warning)
4305 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4307 for (p = ppc_elf_hash_entry (h)->dyn_relocs; p != NULL; p = p->next)
4309 asection *s = p->sec->output_section;
4312 && ((s->flags & (SEC_READONLY | SEC_ALLOC))
4313 == (SEC_READONLY | SEC_ALLOC)))
4315 ((struct bfd_link_info *) info)->flags |= DF_TEXTREL;
4317 /* Not an error, just cut short the traversal. */
4324 /* Set the sizes of the dynamic sections. */
4327 ppc_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
4328 struct bfd_link_info *info)
4330 struct ppc_elf_link_hash_table *htab;
4336 fprintf (stderr, "ppc_elf_size_dynamic_sections called\n");
4339 htab = ppc_elf_hash_table (info);
4340 BFD_ASSERT (htab->elf.dynobj != NULL);
4342 if (elf_hash_table (info)->dynamic_sections_created)
4344 /* Set the contents of the .interp section to the interpreter. */
4345 if (info->executable)
4347 s = bfd_get_section_by_name (htab->elf.dynobj, ".interp");
4348 BFD_ASSERT (s != NULL);
4349 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
4350 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4355 htab->got_header_size = 16;
4357 htab->got_header_size = 12;
4359 /* Set up .got offsets for local syms, and space for local dynamic
4361 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4363 bfd_signed_vma *local_got;
4364 bfd_signed_vma *end_local_got;
4366 bfd_size_type locsymcount;
4367 Elf_Internal_Shdr *symtab_hdr;
4369 if (!is_ppc_elf_target (ibfd->xvec))
4372 for (s = ibfd->sections; s != NULL; s = s->next)
4374 struct ppc_elf_dyn_relocs *p;
4376 for (p = ((struct ppc_elf_dyn_relocs *)
4377 elf_section_data (s)->local_dynrel);
4381 if (!bfd_is_abs_section (p->sec)
4382 && bfd_is_abs_section (p->sec->output_section))
4384 /* Input section has been discarded, either because
4385 it is a copy of a linkonce section or due to
4386 linker script /DISCARD/, so we'll be discarding
4389 else if (p->count != 0)
4391 elf_section_data (p->sec)->sreloc->size
4392 += p->count * sizeof (Elf32_External_Rela);
4393 if ((p->sec->output_section->flags
4394 & (SEC_READONLY | SEC_ALLOC))
4395 == (SEC_READONLY | SEC_ALLOC))
4396 info->flags |= DF_TEXTREL;
4401 local_got = elf_local_got_refcounts (ibfd);
4405 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4406 locsymcount = symtab_hdr->sh_info;
4407 end_local_got = local_got + locsymcount;
4408 lgot_masks = (char *) end_local_got;
4409 for (; local_got < end_local_got; ++local_got, ++lgot_masks)
4412 if (*lgot_masks == (TLS_TLS | TLS_LD))
4414 /* If just an LD reloc, we'll just use
4415 htab->tlsld_got.offset. */
4416 htab->tlsld_got.refcount += 1;
4417 *local_got = (bfd_vma) -1;
4421 unsigned int need = 0;
4422 if ((*lgot_masks & TLS_TLS) != 0)
4424 if ((*lgot_masks & TLS_GD) != 0)
4426 if ((*lgot_masks & (TLS_TPREL | TLS_TPRELGD)) != 0)
4428 if ((*lgot_masks & TLS_DTPREL) != 0)
4433 *local_got = allocate_got (htab, need);
4435 htab->relgot->size += (need
4436 * (sizeof (Elf32_External_Rela) / 4));
4440 *local_got = (bfd_vma) -1;
4443 if (htab->tlsld_got.refcount > 0)
4445 htab->tlsld_got.offset = allocate_got (htab, 8);
4447 htab->relgot->size += sizeof (Elf32_External_Rela);
4450 htab->tlsld_got.offset = (bfd_vma) -1;
4452 /* Allocate space for global sym dynamic relocs. */
4453 elf_link_hash_traverse (elf_hash_table (info), allocate_dynrelocs, info);
4455 if (htab->got != NULL)
4457 unsigned int g_o_t = 32768;
4459 /* If we haven't allocated the header, do so now. */
4460 if (htab->got->size <= 32768)
4462 g_o_t = htab->got->size;
4463 htab->got->size += htab->got_header_size;
4468 htab->elf.hgot->root.u.def.value = g_o_t;
4471 if (htab->glink != NULL && htab->glink->size != 0)
4473 htab->glink_pltresolve = htab->glink->size;
4474 /* Space for the branch table. */
4475 htab->glink->size += htab->glink->size / (GLINK_ENTRY_SIZE / 4) - 4;
4476 /* Pad out to align the start of PLTresolve. */
4477 htab->glink->size += -htab->glink->size & 15;
4478 htab->glink->size += GLINK_PLTRESOLVE;
4481 /* We've now determined the sizes of the various dynamic sections.
4482 Allocate memory for them. */
4484 for (s = htab->elf.dynobj->sections; s != NULL; s = s->next)
4486 if ((s->flags & SEC_LINKER_CREATED) == 0)
4494 /* Strip this section if we don't need it; see the
4497 else if (s == htab->sdata[0].section
4498 || s == htab->sdata[1].section)
4500 /* Strip these too. */
4502 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4506 /* If we don't need this section, strip it from the
4507 output file. This is mostly to handle .rela.bss and
4508 .rela.plt. We must create both sections in
4509 create_dynamic_sections, because they must be created
4510 before the linker maps input sections to output
4511 sections. The linker does that before
4512 adjust_dynamic_symbol is called, and it is that
4513 function which decides whether anything needs to go
4514 into these sections. */
4518 /* Remember whether there are any relocation sections. */
4521 /* We use the reloc_count field as a counter if we need
4522 to copy relocs into the output file. */
4528 /* It's not one of our sections, so don't allocate space. */
4534 s->flags |= SEC_EXCLUDE;
4538 if ((s->flags & SEC_HAS_CONTENTS) == 0)
4541 /* Allocate memory for the section contents. */
4542 s->contents = bfd_zalloc (htab->elf.dynobj, s->size);
4543 if (s->contents == NULL)
4547 if (htab->elf.dynamic_sections_created)
4549 /* Add some entries to the .dynamic section. We fill in the
4550 values later, in ppc_elf_finish_dynamic_sections, but we
4551 must add the entries now so that we get the correct size for
4552 the .dynamic section. The DT_DEBUG entry is filled in by the
4553 dynamic linker and used by the debugger. */
4554 #define add_dynamic_entry(TAG, VAL) \
4555 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
4557 if (info->executable)
4559 if (!add_dynamic_entry (DT_DEBUG, 0))
4563 if (htab->plt != NULL && htab->plt->size != 0)
4565 if (!add_dynamic_entry (DT_PLTGOT, 0)
4566 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4567 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4568 || !add_dynamic_entry (DT_JMPREL, 0))
4572 if (htab->glink != NULL && htab->glink->size != 0)
4574 if (!add_dynamic_entry (DT_PPC_GOT, 0))
4580 if (!add_dynamic_entry (DT_RELA, 0)
4581 || !add_dynamic_entry (DT_RELASZ, 0)
4582 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
4586 /* If any dynamic relocs apply to a read-only section, then we
4587 need a DT_TEXTREL entry. */
4588 if ((info->flags & DF_TEXTREL) == 0)
4589 elf_link_hash_traverse (elf_hash_table (info), readonly_dynrelocs,
4592 if ((info->flags & DF_TEXTREL) != 0)
4594 if (!add_dynamic_entry (DT_TEXTREL, 0))
4598 #undef add_dynamic_entry
4603 #define ARRAY_SIZE(a) (sizeof (a) / sizeof ((a)[0]))
4605 static const int shared_stub_entry[] =
4607 0x7c0802a6, /* mflr 0 */
4608 0x429f0005, /* bcl 20, 31, .Lxxx */
4609 0x7d6802a6, /* mflr 11 */
4610 0x3d6b0000, /* addis 11, 11, (xxx-.Lxxx)@ha */
4611 0x396b0018, /* addi 11, 11, (xxx-.Lxxx)@l */
4612 0x7c0803a6, /* mtlr 0 */
4613 0x7d6903a6, /* mtctr 11 */
4614 0x4e800420, /* bctr */
4617 static const int stub_entry[] =
4619 0x3d600000, /* lis 11,xxx@ha */
4620 0x396b0000, /* addi 11,11,xxx@l */
4621 0x7d6903a6, /* mtctr 11 */
4622 0x4e800420, /* bctr */
4626 ppc_elf_relax_section (bfd *abfd,
4628 struct bfd_link_info *link_info,
4633 struct one_fixup *next;
4639 Elf_Internal_Shdr *symtab_hdr;
4640 bfd_byte *contents = NULL;
4641 Elf_Internal_Sym *isymbuf = NULL;
4642 Elf_Internal_Rela *internal_relocs = NULL;
4643 Elf_Internal_Rela *irel, *irelend;
4644 struct one_fixup *fixups = NULL;
4645 bfd_boolean changed;
4646 struct ppc_elf_link_hash_table *htab;
4647 bfd_size_type trampoff;
4652 /* Nothing to do if there are no relocations, and no need to do
4653 anything with non-alloc sections. */
4654 if ((isec->flags & SEC_ALLOC) == 0
4655 || (isec->flags & SEC_RELOC) == 0
4656 || isec->reloc_count == 0)
4659 trampoff = (isec->size + 3) & (bfd_vma) -4;
4660 /* Space for a branch around any trampolines. */
4663 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
4665 /* Get a copy of the native relocations. */
4666 internal_relocs = _bfd_elf_link_read_relocs (abfd, isec, NULL, NULL,
4667 link_info->keep_memory);
4668 if (internal_relocs == NULL)
4671 htab = ppc_elf_hash_table (link_info);
4672 got2 = bfd_get_section_by_name (abfd, ".got2");
4674 irelend = internal_relocs + isec->reloc_count;
4675 for (irel = internal_relocs; irel < irelend; irel++)
4677 unsigned long r_type = ELF32_R_TYPE (irel->r_info);
4678 bfd_vma symaddr, reladdr, toff, roff;
4680 struct one_fixup *f;
4681 size_t insn_offset = 0;
4682 bfd_vma max_branch_offset, val;
4685 unsigned char sym_type;
4690 case R_PPC_LOCAL24PC:
4691 case R_PPC_PLTREL24:
4692 max_branch_offset = 1 << 25;
4696 case R_PPC_REL14_BRTAKEN:
4697 case R_PPC_REL14_BRNTAKEN:
4698 max_branch_offset = 1 << 15;
4705 /* Get the value of the symbol referred to by the reloc. */
4706 if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
4708 /* A local symbol. */
4709 Elf_Internal_Sym *isym;
4711 /* Read this BFD's local symbols. */
4712 if (isymbuf == NULL)
4714 isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
4715 if (isymbuf == NULL)
4716 isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
4717 symtab_hdr->sh_info, 0,
4722 isym = isymbuf + ELF32_R_SYM (irel->r_info);
4723 if (isym->st_shndx == SHN_UNDEF)
4724 continue; /* We can't do anything with undefined symbols. */
4725 else if (isym->st_shndx == SHN_ABS)
4726 tsec = bfd_abs_section_ptr;
4727 else if (isym->st_shndx == SHN_COMMON)
4728 tsec = bfd_com_section_ptr;
4730 tsec = bfd_section_from_elf_index (abfd, isym->st_shndx);
4732 toff = isym->st_value;
4733 sym_type = ELF_ST_TYPE (isym->st_info);
4737 /* Global symbol handling. */
4739 struct elf_link_hash_entry *h;
4741 indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
4742 h = elf_sym_hashes (abfd)[indx];
4744 while (h->root.type == bfd_link_hash_indirect
4745 || h->root.type == bfd_link_hash_warning)
4746 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4750 if (r_type == R_PPC_PLTREL24
4751 && htab->plt != NULL)
4753 struct plt_entry *ent = find_plt_ent (h, got2, irel->r_addend);
4760 toff = ent->glink_offset;
4765 toff = ent->plt.offset;
4771 else if (h->root.type == bfd_link_hash_defined
4772 || h->root.type == bfd_link_hash_defweak)
4774 tsec = h->root.u.def.section;
4775 toff = h->root.u.def.value;
4783 /* If the branch and target are in the same section, you have
4784 no hope of adding stubs. We'll error out later should the
4789 /* There probably isn't any reason to handle symbols in
4790 SEC_MERGE sections; SEC_MERGE doesn't seem a likely
4791 attribute for a code section, and we are only looking at
4792 branches. However, implement it correctly here as a
4793 reference for other target relax_section functions. */
4794 if (0 && tsec->sec_info_type == ELF_INFO_TYPE_MERGE)
4796 /* At this stage in linking, no SEC_MERGE symbol has been
4797 adjusted, so all references to such symbols need to be
4798 passed through _bfd_merged_section_offset. (Later, in
4799 relocate_section, all SEC_MERGE symbols *except* for
4800 section symbols have been adjusted.)
4802 gas may reduce relocations against symbols in SEC_MERGE
4803 sections to a relocation against the section symbol when
4804 the original addend was zero. When the reloc is against
4805 a section symbol we should include the addend in the
4806 offset passed to _bfd_merged_section_offset, since the
4807 location of interest is the original symbol. On the
4808 other hand, an access to "sym+addend" where "sym" is not
4809 a section symbol should not include the addend; Such an
4810 access is presumed to be an offset from "sym"; The
4811 location of interest is just "sym". */
4812 if (sym_type == STT_SECTION)
4813 toff += irel->r_addend;
4815 toff = _bfd_merged_section_offset (abfd, &tsec,
4816 elf_section_data (tsec)->sec_info,
4819 if (sym_type != STT_SECTION)
4820 toff += irel->r_addend;
4822 /* PLTREL24 addends are special. */
4823 else if (r_type != R_PPC_PLTREL24)
4824 toff += irel->r_addend;
4826 symaddr = tsec->output_section->vma + tsec->output_offset + toff;
4828 roff = irel->r_offset;
4829 reladdr = isec->output_section->vma + isec->output_offset + roff;
4831 /* If the branch is in range, no need to do anything. */
4832 if (symaddr - reladdr + max_branch_offset < 2 * max_branch_offset)
4835 /* Look for an existing fixup to this address. */
4836 for (f = fixups; f ; f = f->next)
4837 if (f->tsec == tsec && f->toff == toff)
4843 unsigned long stub_rtype;
4845 val = trampoff - roff;
4846 if (val >= max_branch_offset)
4847 /* Oh dear, we can't reach a trampoline. Don't try to add
4848 one. We'll report an error later. */
4851 if (link_info->shared)
4853 size = 4 * ARRAY_SIZE (shared_stub_entry);
4855 stub_rtype = R_PPC_RELAX32PC;
4859 size = 4 * ARRAY_SIZE (stub_entry);
4861 stub_rtype = R_PPC_RELAX32;
4864 if (R_PPC_RELAX32_PLT - R_PPC_RELAX32
4865 != R_PPC_RELAX32PC_PLT - R_PPC_RELAX32PC)
4867 if (tsec == htab->plt
4868 || tsec == htab->glink)
4869 stub_rtype += R_PPC_RELAX32_PLT - R_PPC_RELAX32;
4871 /* Hijack the old relocation. Since we need two
4872 relocations for this use a "composite" reloc. */
4873 irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
4875 irel->r_offset = trampoff + insn_offset;
4877 /* Record the fixup so we don't do it again this section. */
4878 f = bfd_malloc (sizeof (*f));
4882 f->trampoff = trampoff;
4889 val = f->trampoff - roff;
4890 if (val >= max_branch_offset)
4893 /* Nop out the reloc, since we're finalizing things here. */
4894 irel->r_info = ELF32_R_INFO (0, R_PPC_NONE);
4897 /* Get the section contents. */
4898 if (contents == NULL)
4900 /* Get cached copy if it exists. */
4901 if (elf_section_data (isec)->this_hdr.contents != NULL)
4902 contents = elf_section_data (isec)->this_hdr.contents;
4905 /* Go get them off disk. */
4906 if (!bfd_malloc_and_get_section (abfd, isec, &contents))
4911 /* Fix up the existing branch to hit the trampoline. */
4912 hit_addr = contents + roff;
4916 case R_PPC_LOCAL24PC:
4917 case R_PPC_PLTREL24:
4918 t0 = bfd_get_32 (abfd, hit_addr);
4920 t0 |= val & 0x3fffffc;
4921 bfd_put_32 (abfd, t0, hit_addr);
4925 case R_PPC_REL14_BRTAKEN:
4926 case R_PPC_REL14_BRNTAKEN:
4927 t0 = bfd_get_32 (abfd, hit_addr);
4930 bfd_put_32 (abfd, t0, hit_addr);
4935 /* Write out the trampolines. */
4936 changed = fixups != NULL;
4946 struct one_fixup *f = fixups;
4947 fixups = fixups->next;
4952 contents = bfd_realloc (contents, trampoff);
4953 if (contents == NULL)
4956 isec->size = (isec->size + 3) & (bfd_vma) -4;
4957 /* Branch around the trampolines. */
4958 val = trampoff - isec->size + 0x48000000;
4959 dest = contents + isec->size;
4960 isec->size = trampoff;
4961 bfd_put_32 (abfd, val, dest);
4964 if (link_info->shared)
4966 stub = shared_stub_entry;
4967 size = ARRAY_SIZE (shared_stub_entry);
4972 size = ARRAY_SIZE (stub_entry);
4976 while (dest < contents + trampoff)
4978 bfd_put_32 (abfd, stub[i], dest);
4984 BFD_ASSERT (i == 0);
4988 && symtab_hdr->contents != (unsigned char *) isymbuf)
4990 if (! link_info->keep_memory)
4994 /* Cache the symbols for elf_link_input_bfd. */
4995 symtab_hdr->contents = (unsigned char *) isymbuf;
4999 if (contents != NULL
5000 && elf_section_data (isec)->this_hdr.contents != contents)
5002 if (!changed && !link_info->keep_memory)
5006 /* Cache the section contents for elf_link_input_bfd. */
5007 elf_section_data (isec)->this_hdr.contents = contents;
5011 if (elf_section_data (isec)->relocs != internal_relocs)
5014 free (internal_relocs);
5016 elf_section_data (isec)->relocs = internal_relocs;
5023 if (isymbuf != NULL && (unsigned char *) isymbuf != symtab_hdr->contents)
5025 if (contents != NULL
5026 && elf_section_data (isec)->this_hdr.contents != contents)
5028 if (internal_relocs != NULL
5029 && elf_section_data (isec)->relocs != internal_relocs)
5030 free (internal_relocs);
5034 /* Set _SDA_BASE_, _SDA2_BASE, and sbss start and end syms. They are
5035 set here rather than via PROVIDE in the default linker script,
5036 because using PROVIDE inside an output section statement results in
5037 unnecessary output sections. Using PROVIDE outside an output section
5038 statement runs the risk of section alignment affecting where the
5042 ppc_elf_set_sdata_syms (bfd *obfd, struct bfd_link_info *info)
5044 struct ppc_elf_link_hash_table *htab;
5049 htab = ppc_elf_hash_table (info);
5051 for (i = 0; i < 2; i++)
5053 elf_linker_section_t *lsect = &htab->sdata[i];
5057 s = s->output_section;
5059 s = bfd_get_section_by_name (obfd, lsect->name);
5061 s = bfd_get_section_by_name (obfd, lsect->bss_name);
5065 val = s->vma + 32768;
5066 lsect->sym_val = val;
5068 _bfd_elf_provide_symbol (info, lsect->sym_name, val);
5071 s = bfd_get_section_by_name (obfd, ".sbss");
5075 _bfd_elf_provide_symbol (info, "__sbss_start", val);
5076 _bfd_elf_provide_symbol (info, "___sbss_start", val);
5079 _bfd_elf_provide_symbol (info, "__sbss_end", val);
5080 _bfd_elf_provide_symbol (info, "___sbss_end", val);
5084 /* Fill in the address for a pointer generated in a linker section. */
5087 elf_finish_pointer_linker_section (bfd *input_bfd,
5088 elf_linker_section_t *lsect,
5089 struct elf_link_hash_entry *h,
5091 const Elf_Internal_Rela *rel)
5093 elf_linker_section_pointers_t *linker_section_ptr;
5095 BFD_ASSERT (lsect != NULL);
5099 /* Handle global symbol. */
5100 struct ppc_elf_link_hash_entry *eh;
5102 eh = (struct ppc_elf_link_hash_entry *) h;
5103 BFD_ASSERT (eh->elf.def_regular);
5104 linker_section_ptr = eh->linker_section_pointer;
5108 /* Handle local symbol. */
5109 unsigned long r_symndx = ELF32_R_SYM (rel->r_info);
5111 BFD_ASSERT (elf_local_ptr_offsets (input_bfd) != NULL);
5112 linker_section_ptr = elf_local_ptr_offsets (input_bfd)[r_symndx];
5115 linker_section_ptr = elf_find_pointer_linker_section (linker_section_ptr,
5118 BFD_ASSERT (linker_section_ptr != NULL);
5120 /* Offset will always be a multiple of four, so use the bottom bit
5121 as a "written" flag. */
5122 if ((linker_section_ptr->offset & 1) == 0)
5124 bfd_put_32 (lsect->section->owner,
5125 relocation + linker_section_ptr->addend,
5126 lsect->section->contents + linker_section_ptr->offset);
5127 linker_section_ptr->offset += 1;
5130 relocation = (lsect->section->output_offset
5131 + linker_section_ptr->offset - 1
5136 "Finish pointer in linker section %s, offset = %ld (0x%lx)\n",
5137 lsect->name, (long) relocation, (long) relocation);
5140 /* Subtract out the addend, because it will get added back in by the normal
5142 return relocation - linker_section_ptr->addend;
5145 /* The RELOCATE_SECTION function is called by the ELF backend linker
5146 to handle the relocations for a section.
5148 The relocs are always passed as Rela structures; if the section
5149 actually uses Rel structures, the r_addend field will always be
5152 This function is responsible for adjust the section contents as
5153 necessary, and (if using Rela relocs and generating a
5154 relocatable output file) adjusting the reloc addend as
5157 This function does not have to worry about setting the reloc
5158 address or the reloc symbol index.
5160 LOCAL_SYMS is a pointer to the swapped in local symbols.
5162 LOCAL_SECTIONS is an array giving the section in the input file
5163 corresponding to the st_shndx field of each local symbol.
5165 The global hash table entry for the global symbols can be found
5166 via elf_sym_hashes (input_bfd).
5168 When generating relocatable output, this function must handle
5169 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5170 going to be the section symbol corresponding to the output
5171 section, which means that the addend must be adjusted
5175 ppc_elf_relocate_section (bfd *output_bfd,
5176 struct bfd_link_info *info,
5178 asection *input_section,
5180 Elf_Internal_Rela *relocs,
5181 Elf_Internal_Sym *local_syms,
5182 asection **local_sections)
5184 Elf_Internal_Shdr *symtab_hdr;
5185 struct elf_link_hash_entry **sym_hashes;
5186 struct ppc_elf_link_hash_table *htab;
5187 Elf_Internal_Rela *rel;
5188 Elf_Internal_Rela *relend;
5189 Elf_Internal_Rela outrel;
5191 asection *got2, *sreloc = NULL;
5192 bfd_vma *local_got_offsets;
5193 bfd_boolean ret = TRUE;
5196 _bfd_error_handler ("ppc_elf_relocate_section called for %B section %A, "
5197 "%ld relocations%s",
5198 input_bfd, input_section,
5199 (long) input_section->reloc_count,
5200 (info->relocatable) ? " (relocatable)" : "");
5203 got2 = bfd_get_section_by_name (input_bfd, ".got2");
5205 if (info->relocatable)
5211 relend = relocs + input_section->reloc_count;
5212 for (; rel < relend; rel++)
5214 enum elf_ppc_reloc_type r_type;
5216 r_type = ELF32_R_TYPE (rel->r_info);
5217 if (r_type == R_PPC_PLTREL24
5218 && rel->r_addend >= 32768)
5220 /* R_PPC_PLTREL24 is rather special. If non-zero, the
5221 addend specifies the GOT pointer offset within .got2. */
5222 rel->r_addend += got2->output_offset;
5228 /* Initialize howto table if not already done. */
5229 if (!ppc_elf_howto_table[R_PPC_ADDR32])
5230 ppc_elf_howto_init ();
5232 htab = ppc_elf_hash_table (info);
5233 local_got_offsets = elf_local_got_offsets (input_bfd);
5234 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5235 sym_hashes = elf_sym_hashes (input_bfd);
5237 relend = relocs + input_section->reloc_count;
5238 for (; rel < relend; rel++)
5240 enum elf_ppc_reloc_type r_type;
5242 bfd_reloc_status_type r;
5243 Elf_Internal_Sym *sym;
5245 struct elf_link_hash_entry *h;
5246 const char *sym_name;
5247 reloc_howto_type *howto;
5248 unsigned long r_symndx;
5250 bfd_vma branch_bit, insn, from;
5251 bfd_boolean unresolved_reloc;
5253 unsigned int tls_type, tls_mask, tls_gd;
5255 r_type = ELF32_R_TYPE (rel->r_info);
5259 unresolved_reloc = FALSE;
5261 r_symndx = ELF32_R_SYM (rel->r_info);
5263 if (r_symndx < symtab_hdr->sh_info)
5265 sym = local_syms + r_symndx;
5266 sec = local_sections[r_symndx];
5267 sym_name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
5269 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
5273 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
5274 r_symndx, symtab_hdr, sym_hashes,
5276 unresolved_reloc, warned);
5278 sym_name = h->root.root.string;
5281 /* TLS optimizations. Replace instruction sequences and relocs
5282 based on information we collected in tls_optimize. We edit
5283 RELOCS so that --emit-relocs will output something sensible
5284 for the final instruction stream. */
5287 if (IS_PPC_TLS_RELOC (r_type))
5290 tls_mask = ((struct ppc_elf_link_hash_entry *) h)->tls_mask;
5291 else if (local_got_offsets != NULL)
5294 lgot_masks = (char *) (local_got_offsets + symtab_hdr->sh_info);
5295 tls_mask = lgot_masks[r_symndx];
5299 /* Ensure reloc mapping code below stays sane. */
5300 if ((R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TLSGD16 & 3)
5301 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TLSGD16_LO & 3)
5302 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TLSGD16_HI & 3)
5303 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TLSGD16_HA & 3)
5304 || (R_PPC_GOT_TLSLD16 & 3) != (R_PPC_GOT_TPREL16 & 3)
5305 || (R_PPC_GOT_TLSLD16_LO & 3) != (R_PPC_GOT_TPREL16_LO & 3)
5306 || (R_PPC_GOT_TLSLD16_HI & 3) != (R_PPC_GOT_TPREL16_HI & 3)
5307 || (R_PPC_GOT_TLSLD16_HA & 3) != (R_PPC_GOT_TPREL16_HA & 3))
5314 case R_PPC_GOT_TPREL16:
5315 case R_PPC_GOT_TPREL16_LO:
5317 && (tls_mask & TLS_TPREL) == 0)
5320 insn = bfd_get_32 (output_bfd, contents + rel->r_offset - 2);
5322 insn |= 0x3c020000; /* addis 0,2,0 */
5323 bfd_put_32 (output_bfd, insn, contents + rel->r_offset - 2);
5324 r_type = R_PPC_TPREL16_HA;
5325 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5331 && (tls_mask & TLS_TPREL) == 0)
5334 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5335 if ((insn & ((31 << 26) | (31 << 11)))
5336 == ((31 << 26) | (2 << 11)))
5337 rtra = insn & ((1 << 26) - (1 << 16));
5338 else if ((insn & ((31 << 26) | (31 << 16)))
5339 == ((31 << 26) | (2 << 16)))
5340 rtra = (insn & (31 << 21)) | ((insn & (31 << 11)) << 5);
5343 if ((insn & ((1 << 11) - (1 << 1))) == 266 << 1)
5346 else if ((insn & (31 << 1)) == 23 << 1
5347 && ((insn & (31 << 6)) < 14 << 6
5348 || ((insn & (31 << 6)) >= 16 << 6
5349 && (insn & (31 << 6)) < 24 << 6)))
5350 /* load and store indexed -> dform. */
5351 insn = (32 | ((insn >> 6) & 31)) << 26;
5352 else if ((insn & (31 << 1)) == 21 << 1
5353 && (insn & (0x1a << 6)) == 0)
5354 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
5355 insn = (((58 | ((insn >> 6) & 4)) << 26)
5356 | ((insn >> 6) & 1));
5357 else if ((insn & (31 << 1)) == 21 << 1
5358 && (insn & ((1 << 11) - (1 << 1))) == 341 << 1)
5360 insn = (58 << 26) | 2;
5364 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5365 r_type = R_PPC_TPREL16_LO;
5366 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5367 /* Was PPC_TLS which sits on insn boundary, now
5368 PPC_TPREL16_LO which is at insn+2. */
5373 case R_PPC_GOT_TLSGD16_HI:
5374 case R_PPC_GOT_TLSGD16_HA:
5375 tls_gd = TLS_TPRELGD;
5376 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5380 case R_PPC_GOT_TLSLD16_HI:
5381 case R_PPC_GOT_TLSLD16_HA:
5382 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5385 if ((tls_mask & tls_gd) != 0)
5386 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5387 + R_PPC_GOT_TPREL16);
5390 bfd_put_32 (output_bfd, NOP, contents + rel->r_offset);
5392 r_type = R_PPC_NONE;
5394 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5398 case R_PPC_GOT_TLSGD16:
5399 case R_PPC_GOT_TLSGD16_LO:
5400 tls_gd = TLS_TPRELGD;
5401 if (tls_mask != 0 && (tls_mask & TLS_GD) == 0)
5402 goto tls_get_addr_check;
5405 case R_PPC_GOT_TLSLD16:
5406 case R_PPC_GOT_TLSLD16_LO:
5407 if (tls_mask != 0 && (tls_mask & TLS_LD) == 0)
5410 if (rel + 1 < relend)
5412 enum elf_ppc_reloc_type r_type2;
5413 unsigned long r_symndx2;
5414 struct elf_link_hash_entry *h2;
5415 bfd_vma insn1, insn2;
5418 /* The next instruction should be a call to
5419 __tls_get_addr. Peek at the reloc to be sure. */
5420 r_type2 = ELF32_R_TYPE (rel[1].r_info);
5421 r_symndx2 = ELF32_R_SYM (rel[1].r_info);
5422 if (r_symndx2 < symtab_hdr->sh_info
5423 || (r_type2 != R_PPC_REL14
5424 && r_type2 != R_PPC_REL14_BRTAKEN
5425 && r_type2 != R_PPC_REL14_BRNTAKEN
5426 && r_type2 != R_PPC_REL24
5427 && r_type2 != R_PPC_PLTREL24))
5430 h2 = sym_hashes[r_symndx2 - symtab_hdr->sh_info];
5431 while (h2->root.type == bfd_link_hash_indirect
5432 || h2->root.type == bfd_link_hash_warning)
5433 h2 = (struct elf_link_hash_entry *) h2->root.u.i.link;
5434 if (h2 == NULL || h2 != htab->tls_get_addr)
5437 /* OK, it checks out. Replace the call. */
5438 offset = rel[1].r_offset;
5439 insn1 = bfd_get_32 (output_bfd,
5440 contents + rel->r_offset - 2);
5441 if ((tls_mask & tls_gd) != 0)
5444 insn1 &= (1 << 26) - 1;
5445 insn1 |= 32 << 26; /* lwz */
5446 insn2 = 0x7c631214; /* add 3,3,2 */
5447 rel[1].r_info = ELF32_R_INFO (r_symndx2, R_PPC_NONE);
5448 r_type = (((r_type - (R_PPC_GOT_TLSGD16 & 3)) & 3)
5449 + R_PPC_GOT_TPREL16);
5450 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5455 insn1 = 0x3c620000; /* addis 3,2,0 */
5456 insn2 = 0x38630000; /* addi 3,3,0 */
5459 /* Was an LD reloc. */
5461 rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5462 rel[1].r_addend = htab->elf.tls_sec->vma + DTP_OFFSET;
5464 r_type = R_PPC_TPREL16_HA;
5465 rel->r_info = ELF32_R_INFO (r_symndx, r_type);
5466 rel[1].r_info = ELF32_R_INFO (r_symndx,
5468 rel[1].r_offset += 2;
5470 bfd_put_32 (output_bfd, insn1, contents + rel->r_offset - 2);
5471 bfd_put_32 (output_bfd, insn2, contents + offset);
5474 /* We changed the symbol on an LD reloc. Start over
5475 in order to get h, sym, sec etc. right. */
5484 /* Handle other relocations that tweak non-addend part of insn. */
5491 /* Branch taken prediction relocations. */
5492 case R_PPC_ADDR14_BRTAKEN:
5493 case R_PPC_REL14_BRTAKEN:
5494 branch_bit = BRANCH_PREDICT_BIT;
5497 /* Branch not taken prediction relocations. */
5498 case R_PPC_ADDR14_BRNTAKEN:
5499 case R_PPC_REL14_BRNTAKEN:
5500 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
5501 insn &= ~BRANCH_PREDICT_BIT;
5504 from = (rel->r_offset
5505 + input_section->output_offset
5506 + input_section->output_section->vma);
5508 /* Invert 'y' bit if not the default. */
5509 if ((bfd_signed_vma) (relocation + rel->r_addend - from) < 0)
5510 insn ^= BRANCH_PREDICT_BIT;
5512 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
5516 addend = rel->r_addend;
5519 if (r_type < R_PPC_max)
5520 howto = ppc_elf_howto_table[r_type];
5524 (*_bfd_error_handler)
5525 (_("%B: unknown relocation type %d for symbol %s"),
5526 input_bfd, (int) r_type, sym_name);
5528 bfd_set_error (bfd_error_bad_value);
5534 case R_PPC_EMB_MRKREF:
5535 case R_PPC_GNU_VTINHERIT:
5536 case R_PPC_GNU_VTENTRY:
5539 /* GOT16 relocations. Like an ADDR16 using the symbol's
5540 address in the GOT as relocation value instead of the
5541 symbol's value itself. Also, create a GOT entry for the
5542 symbol and put the symbol value there. */
5543 case R_PPC_GOT_TLSGD16:
5544 case R_PPC_GOT_TLSGD16_LO:
5545 case R_PPC_GOT_TLSGD16_HI:
5546 case R_PPC_GOT_TLSGD16_HA:
5547 tls_type = TLS_TLS | TLS_GD;
5550 case R_PPC_GOT_TLSLD16:
5551 case R_PPC_GOT_TLSLD16_LO:
5552 case R_PPC_GOT_TLSLD16_HI:
5553 case R_PPC_GOT_TLSLD16_HA:
5554 tls_type = TLS_TLS | TLS_LD;
5557 case R_PPC_GOT_TPREL16:
5558 case R_PPC_GOT_TPREL16_LO:
5559 case R_PPC_GOT_TPREL16_HI:
5560 case R_PPC_GOT_TPREL16_HA:
5561 tls_type = TLS_TLS | TLS_TPREL;
5564 case R_PPC_GOT_DTPREL16:
5565 case R_PPC_GOT_DTPREL16_LO:
5566 case R_PPC_GOT_DTPREL16_HI:
5567 case R_PPC_GOT_DTPREL16_HA:
5568 tls_type = TLS_TLS | TLS_DTPREL;
5572 case R_PPC_GOT16_LO:
5573 case R_PPC_GOT16_HI:
5574 case R_PPC_GOT16_HA:
5577 /* Relocation is to the entry for this symbol in the global
5583 if (htab->got == NULL)
5587 if (tls_type == (TLS_TLS | TLS_LD)
5589 || !h->def_dynamic))
5590 offp = &htab->tlsld_got.offset;
5594 dyn = htab->elf.dynamic_sections_created;
5595 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)
5597 && SYMBOL_REFERENCES_LOCAL (info, h)))
5598 /* This is actually a static link, or it is a
5599 -Bsymbolic link and the symbol is defined
5600 locally, or the symbol was forced to be local
5601 because of a version file. */
5606 unresolved_reloc = FALSE;
5608 offp = &h->got.offset;
5612 if (local_got_offsets == NULL)
5614 offp = &local_got_offsets[r_symndx];
5617 /* The offset must always be a multiple of 4. We use the
5618 least significant bit to record whether we have already
5619 processed this entry. */
5625 unsigned int tls_m = (tls_mask
5626 & (TLS_LD | TLS_GD | TLS_DTPREL
5627 | TLS_TPREL | TLS_TPRELGD));
5629 if (offp == &htab->tlsld_got.offset)
5635 /* We might have multiple got entries for this sym.
5636 Initialize them all. */
5641 if ((tls_m & TLS_LD) != 0)
5643 tls_ty = TLS_TLS | TLS_LD;
5646 else if ((tls_m & TLS_GD) != 0)
5648 tls_ty = TLS_TLS | TLS_GD;
5651 else if ((tls_m & TLS_DTPREL) != 0)
5653 tls_ty = TLS_TLS | TLS_DTPREL;
5654 tls_m &= ~TLS_DTPREL;
5656 else if ((tls_m & (TLS_TPREL | TLS_TPRELGD)) != 0)
5658 tls_ty = TLS_TLS | TLS_TPREL;
5662 /* Generate relocs for the dynamic linker. */
5663 if ((info->shared || indx != 0)
5665 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5666 || h->root.type != bfd_link_hash_undefweak))
5668 outrel.r_offset = (htab->got->output_section->vma
5669 + htab->got->output_offset
5671 outrel.r_addend = 0;
5672 if (tls_ty & (TLS_LD | TLS_GD))
5674 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPMOD32);
5675 if (tls_ty == (TLS_TLS | TLS_GD))
5677 loc = htab->relgot->contents;
5678 loc += (htab->relgot->reloc_count++
5679 * sizeof (Elf32_External_Rela));
5680 bfd_elf32_swap_reloca_out (output_bfd,
5682 outrel.r_offset += 4;
5684 = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5687 else if (tls_ty == (TLS_TLS | TLS_DTPREL))
5688 outrel.r_info = ELF32_R_INFO (indx, R_PPC_DTPREL32);
5689 else if (tls_ty == (TLS_TLS | TLS_TPREL))
5690 outrel.r_info = ELF32_R_INFO (indx, R_PPC_TPREL32);
5692 outrel.r_info = ELF32_R_INFO (indx, R_PPC_RELATIVE);
5694 outrel.r_info = ELF32_R_INFO (indx, R_PPC_GLOB_DAT);
5697 outrel.r_addend += relocation;
5698 if (tls_ty & (TLS_GD | TLS_DTPREL | TLS_TPREL))
5699 outrel.r_addend -= htab->elf.tls_sec->vma;
5701 loc = htab->relgot->contents;
5702 loc += (htab->relgot->reloc_count++
5703 * sizeof (Elf32_External_Rela));
5704 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5707 /* Init the .got section contents if we're not
5708 emitting a reloc. */
5711 bfd_vma value = relocation;
5713 if (tls_ty == (TLS_TLS | TLS_LD))
5715 else if (tls_ty != 0)
5717 value -= htab->elf.tls_sec->vma + DTP_OFFSET;
5718 if (tls_ty == (TLS_TLS | TLS_TPREL))
5719 value += DTP_OFFSET - TP_OFFSET;
5721 if (tls_ty == (TLS_TLS | TLS_GD))
5723 bfd_put_32 (output_bfd, value,
5724 htab->got->contents + off + 4);
5728 bfd_put_32 (output_bfd, value,
5729 htab->got->contents + off);
5733 if (tls_ty & (TLS_LD | TLS_GD))
5742 if (off >= (bfd_vma) -2)
5745 if ((tls_type & TLS_TLS) != 0)
5747 if (tls_type != (TLS_TLS | TLS_LD))
5749 if ((tls_mask & TLS_LD) != 0
5751 || !h->def_dynamic))
5753 if (tls_type != (TLS_TLS | TLS_GD))
5755 if ((tls_mask & TLS_GD) != 0)
5757 if (tls_type != (TLS_TLS | TLS_DTPREL))
5759 if ((tls_mask & TLS_DTPREL) != 0)
5766 relocation = htab->got->output_offset + off;
5767 relocation -= htab->elf.hgot->root.u.def.value;
5769 /* Addends on got relocations don't make much sense.
5770 x+off@got is actually x@got+off, and since the got is
5771 generated by a hash table traversal, the value in the
5772 got at entry m+n bears little relation to the entry m. */
5774 (*_bfd_error_handler)
5775 (_("%B(%A+0x%lx): non-zero addend on %s reloc against `%s'"),
5778 (long) rel->r_offset,
5784 /* Relocations that need no special processing. */
5785 case R_PPC_LOCAL24PC:
5786 /* It makes no sense to point a local relocation
5787 at a symbol not in this object. */
5788 if (unresolved_reloc)
5790 if (! (*info->callbacks->undefined_symbol) (info,
5791 h->root.root.string,
5801 case R_PPC_DTPREL16:
5802 case R_PPC_DTPREL16_LO:
5803 case R_PPC_DTPREL16_HI:
5804 case R_PPC_DTPREL16_HA:
5805 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5808 /* Relocations that may need to be propagated if this is a shared
5811 case R_PPC_TPREL16_LO:
5812 case R_PPC_TPREL16_HI:
5813 case R_PPC_TPREL16_HA:
5814 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5815 /* The TPREL16 relocs shouldn't really be used in shared
5816 libs as they will result in DT_TEXTREL being set, but
5817 support them anyway. */
5821 addend -= htab->elf.tls_sec->vma + TP_OFFSET;
5824 case R_PPC_DTPREL32:
5825 addend -= htab->elf.tls_sec->vma + DTP_OFFSET;
5828 case R_PPC_DTPMOD32:
5834 case R_PPC_REL16_LO:
5835 case R_PPC_REL16_HI:
5836 case R_PPC_REL16_HA:
5842 case R_PPC_REL14_BRTAKEN:
5843 case R_PPC_REL14_BRNTAKEN:
5844 /* If these relocations are not to a named symbol, they can be
5845 handled right here, no need to bother the dynamic linker. */
5846 if (SYMBOL_REFERENCES_LOCAL (info, h)
5847 || h == htab->elf.hgot)
5851 /* Relocations that always need to be propagated if this is a shared
5856 case R_PPC_ADDR16_LO:
5857 case R_PPC_ADDR16_HI:
5858 case R_PPC_ADDR16_HA:
5860 case R_PPC_ADDR14_BRTAKEN:
5861 case R_PPC_ADDR14_BRNTAKEN:
5864 /* r_symndx will be zero only for relocs against symbols
5865 from removed linkonce sections, or sections discarded by
5872 if ((input_section->flags & SEC_ALLOC) == 0)
5878 || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
5879 || h->root.type != bfd_link_hash_undefweak)
5880 && (MUST_BE_DYN_RELOC (r_type)
5881 || !SYMBOL_CALLS_LOCAL (info, h)))
5882 || (ELIMINATE_COPY_RELOCS
5888 && !h->def_regular))
5893 fprintf (stderr, "ppc_elf_relocate_section needs to "
5894 "create relocation for %s\n",
5895 (h && h->root.root.string
5896 ? h->root.root.string : "<unknown>"));
5899 /* When generating a shared object, these relocations
5900 are copied into the output file to be resolved at run
5906 name = (bfd_elf_string_from_elf_section
5908 elf_elfheader (input_bfd)->e_shstrndx,
5909 elf_section_data (input_section)->rel_hdr.sh_name));
5913 BFD_ASSERT (strncmp (name, ".rela", 5) == 0
5914 && strcmp (bfd_get_section_name (input_bfd,
5918 sreloc = bfd_get_section_by_name (htab->elf.dynobj, name);
5919 BFD_ASSERT (sreloc != NULL);
5925 _bfd_elf_section_offset (output_bfd, info, input_section,
5927 if (outrel.r_offset == (bfd_vma) -1
5928 || outrel.r_offset == (bfd_vma) -2)
5929 skip = (int) outrel.r_offset;
5930 outrel.r_offset += (input_section->output_section->vma
5931 + input_section->output_offset);
5934 memset (&outrel, 0, sizeof outrel);
5935 else if (!SYMBOL_REFERENCES_LOCAL (info, h))
5937 unresolved_reloc = FALSE;
5938 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
5939 outrel.r_addend = rel->r_addend;
5943 outrel.r_addend = relocation + rel->r_addend;
5945 if (r_type == R_PPC_ADDR32)
5946 outrel.r_info = ELF32_R_INFO (0, R_PPC_RELATIVE);
5951 if (bfd_is_abs_section (sec))
5953 else if (sec == NULL || sec->owner == NULL)
5955 bfd_set_error (bfd_error_bad_value);
5962 /* We are turning this relocation into one
5963 against a section symbol. It would be
5964 proper to subtract the symbol's value,
5965 osec->vma, from the emitted reloc addend,
5966 but ld.so expects buggy relocs. */
5967 osec = sec->output_section;
5968 indx = elf_section_data (osec)->dynindx;
5969 BFD_ASSERT (indx > 0);
5972 printf ("indx=%d section=%s flags=%08x name=%s\n",
5973 indx, osec->name, osec->flags,
5974 h->root.root.string);
5978 outrel.r_info = ELF32_R_INFO (indx, r_type);
5982 loc = sreloc->contents;
5983 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
5984 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
5989 /* This reloc will be computed at runtime. We clear the memory
5990 so that it contains predictable value. */
5992 && ((input_section->flags & SEC_ALLOC) != 0
5993 || ELF32_R_TYPE (outrel.r_info) != R_PPC_RELATIVE))
5995 relocation = howto->pc_relative ? outrel.r_offset : 0;
6002 case R_PPC_RELAX32PC_PLT:
6003 case R_PPC_RELAX32_PLT:
6005 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6008 relocation = (htab->glink->output_section->vma
6009 + htab->glink->output_offset
6010 + ent->glink_offset);
6012 relocation = (htab->plt->output_section->vma
6013 + htab->plt->output_offset
6017 if (r_type == R_PPC_RELAX32_PLT)
6021 case R_PPC_RELAX32PC:
6022 relocation -= (input_section->output_section->vma
6023 + input_section->output_offset
6024 + rel->r_offset - 4);
6033 t0 = bfd_get_32 (output_bfd, contents + rel->r_offset);
6034 t1 = bfd_get_32 (output_bfd, contents + rel->r_offset + 4);
6036 /* We're clearing the bits for R_PPC_ADDR16_HA
6037 and R_PPC_ADDR16_LO here. */
6041 /* t0 is HA, t1 is LO */
6042 relocation += addend;
6043 t0 |= ((relocation + 0x8000) >> 16) & 0xffff;
6044 t1 |= relocation & 0xffff;
6046 bfd_put_32 (output_bfd, t0, contents + rel->r_offset);
6047 bfd_put_32 (output_bfd, t1, contents + rel->r_offset + 4);
6051 /* Indirect .sdata relocation. */
6052 case R_PPC_EMB_SDAI16:
6053 BFD_ASSERT (htab->sdata[0].section != NULL);
6055 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[0],
6056 h, relocation, rel);
6059 /* Indirect .sdata2 relocation. */
6060 case R_PPC_EMB_SDA2I16:
6061 BFD_ASSERT (htab->sdata[1].section != NULL);
6063 = elf_finish_pointer_linker_section (input_bfd, &htab->sdata[1],
6064 h, relocation, rel);
6067 /* Handle the TOC16 reloc. We want to use the offset within the .got
6068 section, not the actual VMA. This is appropriate when generating
6069 an embedded ELF object, for which the .got section acts like the
6070 AIX .toc section. */
6071 case R_PPC_TOC16: /* phony GOT16 relocations */
6072 BFD_ASSERT (sec != NULL);
6073 BFD_ASSERT (bfd_is_und_section (sec)
6074 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
6075 || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0);
6077 addend -= sec->output_section->vma + sec->output_offset + 0x8000;
6080 case R_PPC_PLTREL24:
6081 /* Relocation is to the entry for this symbol in the
6082 procedure linkage table. */
6084 struct plt_entry *ent = find_plt_ent (h, got2, addend);
6088 || htab->plt == NULL)
6090 /* We didn't make a PLT entry for this symbol. This
6091 happens when statically linking PIC code, or when
6092 using -Bsymbolic. */
6096 unresolved_reloc = FALSE;
6098 relocation = (htab->glink->output_section->vma
6099 + htab->glink->output_offset
6100 + ent->glink_offset);
6102 relocation = (htab->plt->output_section->vma
6103 + htab->plt->output_offset
6108 /* Relocate against _SDA_BASE_. */
6109 case R_PPC_SDAREL16:
6113 BFD_ASSERT (sec != NULL);
6114 name = bfd_get_section_name (abfd, sec->output_section);
6115 if (! ((strncmp (name, ".sdata", 6) == 0
6116 && (name[6] == 0 || name[6] == '.'))
6117 || (strncmp (name, ".sbss", 5) == 0
6118 && (name[5] == 0 || name[5] == '.'))))
6120 (*_bfd_error_handler)
6121 (_("%B: the target (%s) of a %s relocation is "
6122 "in the wrong output section (%s)"),
6128 addend -= htab->sdata[0].sym_val;
6132 /* Relocate against _SDA2_BASE_. */
6133 case R_PPC_EMB_SDA2REL:
6137 BFD_ASSERT (sec != NULL);
6138 name = bfd_get_section_name (abfd, sec->output_section);
6139 if (! (strncmp (name, ".sdata2", 7) == 0
6140 || strncmp (name, ".sbss2", 6) == 0))
6142 (*_bfd_error_handler)
6143 (_("%B: the target (%s) of a %s relocation is "
6144 "in the wrong output section (%s)"),
6150 bfd_set_error (bfd_error_bad_value);
6154 addend -= htab->sdata[1].sym_val;
6158 /* Relocate against either _SDA_BASE_, _SDA2_BASE_, or 0. */
6159 case R_PPC_EMB_SDA21:
6160 case R_PPC_EMB_RELSDA:
6165 BFD_ASSERT (sec != NULL);
6166 name = bfd_get_section_name (abfd, sec->output_section);
6167 if (((strncmp (name, ".sdata", 6) == 0
6168 && (name[6] == 0 || name[6] == '.'))
6169 || (strncmp (name, ".sbss", 5) == 0
6170 && (name[5] == 0 || name[5] == '.'))))
6173 addend -= htab->sdata[0].sym_val;
6176 else if (strncmp (name, ".sdata2", 7) == 0
6177 || strncmp (name, ".sbss2", 6) == 0)
6180 addend -= htab->sdata[1].sym_val;
6183 else if (strcmp (name, ".PPC.EMB.sdata0") == 0
6184 || strcmp (name, ".PPC.EMB.sbss0") == 0)
6191 (*_bfd_error_handler)
6192 (_("%B: the target (%s) of a %s relocation is "
6193 "in the wrong output section (%s)"),
6199 bfd_set_error (bfd_error_bad_value);
6204 if (r_type == R_PPC_EMB_SDA21)
6205 { /* fill in register field */
6206 insn = bfd_get_32 (output_bfd, contents + rel->r_offset);
6207 insn = (insn & ~RA_REGISTER_MASK) | (reg << RA_REGISTER_SHIFT);
6208 bfd_put_32 (output_bfd, insn, contents + rel->r_offset);
6213 /* Relocate against the beginning of the section. */
6215 case R_PPC_SECTOFF_LO:
6216 case R_PPC_SECTOFF_HI:
6217 case R_PPC_SECTOFF_HA:
6218 BFD_ASSERT (sec != NULL);
6219 addend -= sec->output_section->vma;
6222 /* Negative relocations. */
6223 case R_PPC_EMB_NADDR32:
6224 case R_PPC_EMB_NADDR16:
6225 case R_PPC_EMB_NADDR16_LO:
6226 case R_PPC_EMB_NADDR16_HI:
6227 case R_PPC_EMB_NADDR16_HA:
6228 addend -= 2 * relocation;
6232 case R_PPC_GLOB_DAT:
6233 case R_PPC_JMP_SLOT:
6234 case R_PPC_RELATIVE:
6236 case R_PPC_PLTREL32:
6237 case R_PPC_PLT16_LO:
6238 case R_PPC_PLT16_HI:
6239 case R_PPC_PLT16_HA:
6241 case R_PPC_EMB_RELSEC16:
6242 case R_PPC_EMB_RELST_LO:
6243 case R_PPC_EMB_RELST_HI:
6244 case R_PPC_EMB_RELST_HA:
6245 case R_PPC_EMB_BIT_FLD:
6246 (*_bfd_error_handler)
6247 (_("%B: relocation %s is not yet supported for symbol %s."),
6252 bfd_set_error (bfd_error_invalid_operation);
6257 /* Do any further special processing. */
6263 case R_PPC_ADDR16_HA:
6264 case R_PPC_REL16_HA:
6265 case R_PPC_GOT16_HA:
6266 case R_PPC_PLT16_HA:
6267 case R_PPC_SECTOFF_HA:
6268 case R_PPC_TPREL16_HA:
6269 case R_PPC_DTPREL16_HA:
6270 case R_PPC_GOT_TLSGD16_HA:
6271 case R_PPC_GOT_TLSLD16_HA:
6272 case R_PPC_GOT_TPREL16_HA:
6273 case R_PPC_GOT_DTPREL16_HA:
6274 case R_PPC_EMB_NADDR16_HA:
6275 case R_PPC_EMB_RELST_HA:
6276 /* It's just possible that this symbol is a weak symbol
6277 that's not actually defined anywhere. In that case,
6278 'sec' would be NULL, and we should leave the symbol
6279 alone (it will be set to zero elsewhere in the link). */
6281 /* Add 0x10000 if sign bit in 0:15 is set.
6282 Bits 0:15 are not used. */
6288 fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, "
6289 "offset = %ld, addend = %ld\n",
6294 (long) rel->r_offset,
6298 if (unresolved_reloc
6299 && !((input_section->flags & SEC_DEBUGGING) != 0
6302 (*_bfd_error_handler)
6303 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
6306 (long) rel->r_offset,
6312 r = _bfd_final_link_relocate (howto,
6320 if (r != bfd_reloc_ok)
6322 if (r == bfd_reloc_overflow)
6327 && h->root.type == bfd_link_hash_undefweak
6328 && howto->pc_relative)
6330 /* Assume this is a call protected by other code that
6331 detect the symbol is undefined. If this is the case,
6332 we can safely ignore the overflow. If not, the
6333 program is hosed anyway, and a little warning isn't
6339 if (! (*info->callbacks->reloc_overflow) (info,
6340 (h ? &h->root : NULL),
6351 (*_bfd_error_handler)
6352 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
6353 input_bfd, input_section,
6354 (long) rel->r_offset, howto->name, sym_name, (int) r);
6361 fprintf (stderr, "\n");
6367 #define PPC_LO(v) ((v) & 0xffff)
6368 #define PPC_HI(v) (((v) >> 16) & 0xffff)
6369 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
6371 /* Finish up dynamic symbol handling. We set the contents of various
6372 dynamic sections here. */
6375 ppc_elf_finish_dynamic_symbol (bfd *output_bfd,
6376 struct bfd_link_info *info,
6377 struct elf_link_hash_entry *h,
6378 Elf_Internal_Sym *sym)
6380 struct ppc_elf_link_hash_table *htab;
6381 struct plt_entry *ent;
6382 bfd_boolean doneone;
6385 fprintf (stderr, "ppc_elf_finish_dynamic_symbol called for %s",
6386 h->root.root.string);
6389 htab = ppc_elf_hash_table (info);
6390 BFD_ASSERT (htab->elf.dynobj != NULL);
6393 for (ent = h->plt.plist; ent != NULL; ent = ent->next)
6394 if (ent->plt.offset != (bfd_vma) -1)
6398 Elf_Internal_Rela rela;
6400 bfd_vma reloc_index;
6402 /* This symbol has an entry in the procedure linkage table.
6406 /* We don't need to fill in the .plt. The ppc dynamic
6407 linker will fill it in. */
6411 bfd_vma val = (htab->glink_pltresolve + ent->plt.offset
6412 + htab->glink->output_section->vma
6413 + htab->glink->output_offset);
6414 bfd_put_32 (output_bfd, val,
6415 htab->plt->contents + ent->plt.offset);
6418 /* Fill in the entry in the .rela.plt section. */
6419 rela.r_offset = (htab->plt->output_section->vma
6420 + htab->plt->output_offset
6422 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_JMP_SLOT);
6426 reloc_index = ent->plt.offset / 4;
6429 reloc_index = ((ent->plt.offset - PLT_INITIAL_ENTRY_SIZE)
6431 if (reloc_index > PLT_NUM_SINGLE_ENTRIES)
6432 reloc_index -= (reloc_index - PLT_NUM_SINGLE_ENTRIES) / 2;
6434 loc = (htab->relplt->contents
6435 + reloc_index * sizeof (Elf32_External_Rela));
6436 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6438 if (!h->def_regular)
6440 /* Mark the symbol as undefined, rather than as defined in
6441 the .plt section. Leave the value alone. */
6442 sym->st_shndx = SHN_UNDEF;
6443 /* If the symbol is weak, we do need to clear the value.
6444 Otherwise, the PLT entry would provide a definition for
6445 the symbol even if the symbol wasn't defined anywhere,
6446 and so the symbol would never be NULL. */
6447 if (!h->ref_regular_nonweak)
6458 plt = (ent->plt.offset
6459 + htab->plt->output_section->vma
6460 + htab->plt->output_offset);
6461 p = (unsigned char *) htab->glink->contents + ent->glink_offset;
6463 if (info->shared || info->pie)
6467 if (ent->addend >= 32768)
6469 + ent->sec->output_section->vma
6470 + ent->sec->output_offset);
6471 else if (htab->elf.hgot != NULL)
6472 got = (htab->elf.hgot->root.u.def.value
6473 + htab->elf.hgot->root.u.def.section->output_section->vma
6474 + htab->elf.hgot->root.u.def.section->output_offset);
6478 if (plt + 0x8000 < 0x10000)
6480 bfd_put_32 (output_bfd, LWZ_11_30 + PPC_LO (plt), p);
6482 bfd_put_32 (output_bfd, MTCTR_11, p);
6484 bfd_put_32 (output_bfd, BCTR, p);
6486 bfd_put_32 (output_bfd, NOP, p);
6491 bfd_put_32 (output_bfd, ADDIS_11_30 + PPC_HA (plt), p);
6493 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6495 bfd_put_32 (output_bfd, MTCTR_11, p);
6497 bfd_put_32 (output_bfd, BCTR, p);
6503 bfd_put_32 (output_bfd, LIS_11 + PPC_HA (plt), p);
6505 bfd_put_32 (output_bfd, LWZ_11_11 + PPC_LO (plt), p);
6507 bfd_put_32 (output_bfd, MTCTR_11, p);
6509 bfd_put_32 (output_bfd, BCTR, p);
6520 Elf_Internal_Rela rela;
6523 /* This symbols needs a copy reloc. Set it up. */
6526 fprintf (stderr, ", copy");
6529 BFD_ASSERT (h->dynindx != -1);
6531 if (h->size <= elf_gp_size (htab->elf.dynobj))
6535 BFD_ASSERT (s != NULL);
6537 rela.r_offset = (h->root.u.def.value
6538 + h->root.u.def.section->output_section->vma
6539 + h->root.u.def.section->output_offset);
6540 rela.r_info = ELF32_R_INFO (h->dynindx, R_PPC_COPY);
6542 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
6543 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
6547 fprintf (stderr, "\n");
6550 /* Mark some specially defined symbols as absolute. */
6551 if (h == htab->elf.hgot
6552 || strcmp (h->root.root.string, "_DYNAMIC") == 0
6553 || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
6554 sym->st_shndx = SHN_ABS;
6559 static enum elf_reloc_type_class
6560 ppc_elf_reloc_type_class (const Elf_Internal_Rela *rela)
6562 switch (ELF32_R_TYPE (rela->r_info))
6564 case R_PPC_RELATIVE:
6565 return reloc_class_relative;
6568 case R_PPC_JMP_SLOT:
6569 return reloc_class_plt;
6571 return reloc_class_copy;
6573 return reloc_class_normal;
6577 /* Finish up the dynamic sections. */
6580 ppc_elf_finish_dynamic_sections (bfd *output_bfd,
6581 struct bfd_link_info *info)
6584 struct ppc_elf_link_hash_table *htab;
6588 fprintf (stderr, "ppc_elf_finish_dynamic_sections called\n");
6591 htab = ppc_elf_hash_table (info);
6592 sdyn = bfd_get_section_by_name (htab->elf.dynobj, ".dynamic");
6595 if (htab->elf.hgot != NULL)
6596 got = (htab->elf.hgot->root.u.def.value
6597 + htab->elf.hgot->root.u.def.section->output_section->vma
6598 + htab->elf.hgot->root.u.def.section->output_offset);
6600 if (htab->elf.dynamic_sections_created)
6602 Elf32_External_Dyn *dyncon, *dynconend;
6604 BFD_ASSERT (htab->plt != NULL && sdyn != NULL);
6606 dyncon = (Elf32_External_Dyn *) sdyn->contents;
6607 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
6608 for (; dyncon < dynconend; dyncon++)
6610 Elf_Internal_Dyn dyn;
6613 bfd_elf32_swap_dyn_in (htab->elf.dynobj, dyncon, &dyn);
6619 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6623 dyn.d_un.d_val = htab->relplt->size;
6628 dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
6632 dyn.d_un.d_ptr = got;
6639 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
6643 /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can
6644 easily find the address of the _GLOBAL_OFFSET_TABLE_. */
6645 if (htab->got != NULL)
6647 unsigned char *p = htab->got->contents;
6650 p += elf_hash_table (info)->hgot->root.u.def.value;
6652 bfd_put_32 (output_bfd, 0x4e800021 /* blrl */, p - 4);
6656 val = sdyn->output_section->vma + sdyn->output_offset;
6657 bfd_put_32 (output_bfd, val, p);
6659 elf_section_data (htab->got->output_section)->this_hdr.sh_entsize = 4;
6662 if (htab->glink != NULL && htab->glink->contents != NULL)
6665 unsigned char *endp;
6670 * PIC glink code is the following:
6672 * # ith PLT code stub.
6673 * addis 11,30,(plt+(i-1)*4-got)@ha
6674 * lwz 11,(plt+(i-1)*4-got)@l(11)
6678 * # A table of branches, one for each plt entry.
6679 * # The idea is that the plt call stub loads ctr (and r11) with these
6680 * # addresses, so (r11 - res_0) gives the plt index * 4.
6681 * res_0: b PLTresolve
6682 * res_1: b PLTresolve
6684 * # Some number of entries towards the end can be nops
6690 * addis 11,11,(1f-res_0)@ha
6693 * 1: addi 11,11,(1b-res_0)@l
6696 * sub 11,11,12 # r11 = index * 4
6697 * addis 12,12,(got+4-1b)@ha
6698 * lwz 0,(got+4-1b)@l(12) # got[1] address of dl_runtime_resolve
6699 * lwz 12,(got+8-1b)@l(12) # got[2] contains the map address
6702 * add 11,0,11 # r11 = index * 12 = reloc offset.
6705 static const unsigned int pic_plt_resolve[] =
6725 static const unsigned int plt_resolve[] =
6745 if (ARRAY_SIZE (pic_plt_resolve) != GLINK_PLTRESOLVE / 4)
6747 if (ARRAY_SIZE (plt_resolve) != GLINK_PLTRESOLVE / 4)
6750 /* Build the branch table, one for each plt entry (less one),
6751 and perhaps some padding. */
6752 p = htab->glink->contents;
6753 p += htab->glink_pltresolve;
6754 endp = htab->glink->contents;
6755 endp += htab->glink->size - GLINK_PLTRESOLVE;
6756 while (p < endp - 8 * 4)
6758 bfd_put_32 (output_bfd, B + endp - p, p);
6763 bfd_put_32 (output_bfd, NOP, p);
6767 res0 = (htab->glink_pltresolve
6768 + htab->glink->output_section->vma
6769 + htab->glink->output_offset);
6771 /* Last comes the PLTresolve stub. */
6772 if (info->shared || info->pie)
6776 for (i = 0; i < ARRAY_SIZE (pic_plt_resolve); i++)
6778 bfd_put_32 (output_bfd, pic_plt_resolve[i], p);
6781 p -= 4 * ARRAY_SIZE (pic_plt_resolve);
6783 bcl = (htab->glink->size - GLINK_PLTRESOLVE + 3*4
6784 + htab->glink->output_section->vma
6785 + htab->glink->output_offset);
6787 bfd_put_32 (output_bfd,
6788 ADDIS_11_11 + PPC_HA (bcl - res0), p + 0*4);
6789 bfd_put_32 (output_bfd,
6790 ADDI_11_11 + PPC_LO (bcl - res0), p + 3*4);
6791 bfd_put_32 (output_bfd,
6792 ADDIS_12_12 + PPC_HA (got + 4 - bcl), p + 7*4);
6793 if (PPC_HA (got + 4 - bcl) == PPC_HA (got + 8 - bcl))
6795 bfd_put_32 (output_bfd,
6796 LWZ_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6797 bfd_put_32 (output_bfd,
6798 LWZ_12_12 + PPC_LO (got + 8 - bcl), p + 9*4);
6802 bfd_put_32 (output_bfd,
6803 LWZU_0_12 + PPC_LO (got + 4 - bcl), p + 8*4);
6804 bfd_put_32 (output_bfd,
6805 LWZ_12_12 + 4, p + 9*4);
6810 for (i = 0; i < ARRAY_SIZE (plt_resolve); i++)
6812 bfd_put_32 (output_bfd, plt_resolve[i], p);
6815 p -= 4 * ARRAY_SIZE (plt_resolve);
6817 bfd_put_32 (output_bfd,
6818 LIS_12 + PPC_HA (got + 4), p + 0*4);
6819 bfd_put_32 (output_bfd,
6820 ADDIS_11_11 + PPC_HA (-res0), p + 1*4);
6821 bfd_put_32 (output_bfd,
6822 ADDI_11_11 + PPC_LO (-res0), p + 3*4);
6823 if (PPC_HA (got + 4) == PPC_HA (got + 8))
6825 bfd_put_32 (output_bfd,
6826 LWZ_0_12 + PPC_LO (got + 4), p + 2*4);
6827 bfd_put_32 (output_bfd,
6828 LWZ_12_12 + PPC_LO (got + 8), p + 6*4);
6832 bfd_put_32 (output_bfd,
6833 LWZU_0_12 + PPC_LO (got + 4), p + 2*4);
6834 bfd_put_32 (output_bfd,
6835 LWZ_12_12 + 4, p + 6*4);
6843 #define TARGET_LITTLE_SYM bfd_elf32_powerpcle_vec
6844 #define TARGET_LITTLE_NAME "elf32-powerpcle"
6845 #define TARGET_BIG_SYM bfd_elf32_powerpc_vec
6846 #define TARGET_BIG_NAME "elf32-powerpc"
6847 #define ELF_ARCH bfd_arch_powerpc
6848 #define ELF_MACHINE_CODE EM_PPC
6849 #ifdef __QNXTARGET__
6850 #define ELF_MAXPAGESIZE 0x1000
6852 #define ELF_MAXPAGESIZE 0x10000
6854 #define ELF_MINPAGESIZE 0x1000
6855 #define elf_info_to_howto ppc_elf_info_to_howto
6857 #ifdef EM_CYGNUS_POWERPC
6858 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6862 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6865 #define elf_backend_plt_not_loaded 1
6866 #define elf_backend_can_gc_sections 1
6867 #define elf_backend_can_refcount 1
6868 #define elf_backend_rela_normal 1
6870 #define bfd_elf32_mkobject ppc_elf_mkobject
6871 #define bfd_elf32_bfd_merge_private_bfd_data ppc_elf_merge_private_bfd_data
6872 #define bfd_elf32_bfd_relax_section ppc_elf_relax_section
6873 #define bfd_elf32_bfd_reloc_type_lookup ppc_elf_reloc_type_lookup
6874 #define bfd_elf32_bfd_set_private_flags ppc_elf_set_private_flags
6875 #define bfd_elf32_bfd_link_hash_table_create ppc_elf_link_hash_table_create
6877 #define elf_backend_object_p ppc_elf_object_p
6878 #define elf_backend_gc_mark_hook ppc_elf_gc_mark_hook
6879 #define elf_backend_gc_sweep_hook ppc_elf_gc_sweep_hook
6880 #define elf_backend_section_from_shdr ppc_elf_section_from_shdr
6881 #define elf_backend_relocate_section ppc_elf_relocate_section
6882 #define elf_backend_create_dynamic_sections ppc_elf_create_dynamic_sections
6883 #define elf_backend_check_relocs ppc_elf_check_relocs
6884 #define elf_backend_copy_indirect_symbol ppc_elf_copy_indirect_symbol
6885 #define elf_backend_adjust_dynamic_symbol ppc_elf_adjust_dynamic_symbol
6886 #define elf_backend_add_symbol_hook ppc_elf_add_symbol_hook
6887 #define elf_backend_size_dynamic_sections ppc_elf_size_dynamic_sections
6888 #define elf_backend_finish_dynamic_symbol ppc_elf_finish_dynamic_symbol
6889 #define elf_backend_finish_dynamic_sections ppc_elf_finish_dynamic_sections
6890 #define elf_backend_fake_sections ppc_elf_fake_sections
6891 #define elf_backend_additional_program_headers ppc_elf_additional_program_headers
6892 #define elf_backend_grok_prstatus ppc_elf_grok_prstatus
6893 #define elf_backend_grok_psinfo ppc_elf_grok_psinfo
6894 #define elf_backend_reloc_type_class ppc_elf_reloc_type_class
6895 #define elf_backend_begin_write_processing ppc_elf_begin_write_processing
6896 #define elf_backend_final_write_processing ppc_elf_final_write_processing
6897 #define elf_backend_write_section ppc_elf_write_section
6898 #define elf_backend_special_sections ppc_elf_special_sections
6899 #define elf_backend_plt_sym_val ppc_elf_plt_sym_val
6901 #include "elf32-target.h"
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