1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
3 Written by Linus Nordberg, Swox AB <info@swox.com>,
4 based on elf32-ppc.c by Ian Lance Taylor.
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 Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
22 /* This file is based on the 64-bit PowerPC ELF ABI. It is also based
23 on the file elf32-ppc.c. */
31 #include "elf64-ppc.h"
33 static void ppc_howto_init
35 static reloc_howto_type *ppc64_elf_reloc_type_lookup
36 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
37 static void ppc64_elf_info_to_howto
38 PARAMS ((bfd *abfd, arelent *cache_ptr, Elf64_Internal_Rela *dst));
39 static bfd_reloc_status_type ppc64_elf_ha_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
42 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
43 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
44 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
45 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
46 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
47 static bfd_reloc_status_type ppc64_elf_toc_reloc
48 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
49 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
50 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
51 static bfd_reloc_status_type ppc64_elf_toc64_reloc
52 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
53 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
54 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
55 static boolean ppc64_elf_object_p
57 static boolean ppc64_elf_merge_private_bfd_data
58 PARAMS ((bfd *, bfd *));
61 /* The name of the dynamic interpreter. This is put in the .interp
63 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
65 /* The size in bytes of an entry in the procedure linkage table. */
66 #define PLT_ENTRY_SIZE 24
68 /* The initial size of the plt reserved for the dynamic linker. */
69 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
71 /* TOC base pointers offset from start of TOC. */
72 #define TOC_BASE_OFF (0x8000)
74 /* .plt call stub instructions. */
75 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
76 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
77 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
78 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
79 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
80 /* ld %r11,xxx+16@l(%r12) */
81 #define BCTR 0x4e800420 /* bctr */
83 /* The normal stub is this size. */
84 #define PLT_CALL_STUB_SIZE (7*4)
86 /* But sometimes the .plt entry crosses a 64k boundary, and we need
87 to adjust the high word with this insn. */
88 #define ADDIS_R12_R12_1 0x3d8c0001 /* addis %r12,%r12,1 */
90 /* The .glink fixup call stub is the same as the .plt call stub, but
91 the first instruction restores r2, and the std is omitted. */
92 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
94 /* Always allow this much space. */
95 #define GLINK_CALL_STUB_SIZE (8*4)
98 #define NOP 0x60000000
100 /* Some other nops. */
101 #define CROR_151515 0x4def7b82
102 #define CROR_313131 0x4ffffb82
104 /* .glink entries for the first 32k functions are two instructions. */
105 #define LI_R0_0 0x38000000 /* li %r0,0 */
106 #define B_DOT 0x48000000 /* b . */
108 /* After that, we need two instructions to load the index, followed by
110 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
111 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
113 /* Instructions to save and restore floating point regs. */
114 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
115 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
116 #define BLR 0x4e800020 /* blr */
118 /* Since .opd is an array of descriptors and each entry will end up
119 with identical R_PPC64_RELATIVE relocs, there is really no need to
120 propagate .opd relocs; The dynamic linker should be taught to
121 relocate .opd without reloc entries. */
122 #ifndef NO_OPD_RELOCS
123 #define NO_OPD_RELOCS 0
126 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
128 /* Relocation HOWTO's. */
129 static reloc_howto_type *ppc64_elf_howto_table[(int) R_PPC_max];
131 static reloc_howto_type ppc64_elf_howto_raw[] = {
132 /* This reloc does nothing. */
133 HOWTO (R_PPC64_NONE, /* type */
135 0, /* size (0 = byte, 1 = short, 2 = long) */
137 false, /* pc_relative */
139 complain_overflow_dont, /* complain_on_overflow */
140 bfd_elf_generic_reloc, /* special_function */
141 "R_PPC64_NONE", /* name */
142 false, /* partial_inplace */
145 false), /* pcrel_offset */
147 /* A standard 32 bit relocation. */
148 HOWTO (R_PPC64_ADDR32, /* type */
150 2, /* size (0 = byte, 1 = short, 2 = long) */
152 false, /* pc_relative */
154 complain_overflow_bitfield, /* complain_on_overflow */
155 bfd_elf_generic_reloc, /* special_function */
156 "R_PPC64_ADDR32", /* name */
157 false, /* partial_inplace */
159 0xffffffff, /* dst_mask */
160 false), /* pcrel_offset */
162 /* An absolute 26 bit branch; the lower two bits must be zero.
163 FIXME: we don't check that, we just clear them. */
164 HOWTO (R_PPC64_ADDR24, /* type */
166 2, /* size (0 = byte, 1 = short, 2 = long) */
168 false, /* pc_relative */
170 complain_overflow_bitfield, /* complain_on_overflow */
171 bfd_elf_generic_reloc, /* special_function */
172 "R_PPC64_ADDR24", /* name */
173 false, /* partial_inplace */
175 0x03fffffc, /* dst_mask */
176 false), /* pcrel_offset */
178 /* A standard 16 bit relocation. */
179 HOWTO (R_PPC64_ADDR16, /* type */
181 1, /* size (0 = byte, 1 = short, 2 = long) */
183 false, /* pc_relative */
185 complain_overflow_bitfield, /* complain_on_overflow */
186 bfd_elf_generic_reloc, /* special_function */
187 "R_PPC64_ADDR16", /* name */
188 false, /* partial_inplace */
190 0xffff, /* dst_mask */
191 false), /* pcrel_offset */
193 /* A 16 bit relocation without overflow. */
194 HOWTO (R_PPC64_ADDR16_LO, /* type */
196 1, /* size (0 = byte, 1 = short, 2 = long) */
198 false, /* pc_relative */
200 complain_overflow_dont,/* complain_on_overflow */
201 bfd_elf_generic_reloc, /* special_function */
202 "R_PPC64_ADDR16_LO", /* name */
203 false, /* partial_inplace */
205 0xffff, /* dst_mask */
206 false), /* pcrel_offset */
208 /* Bits 16-31 of an address. */
209 HOWTO (R_PPC64_ADDR16_HI, /* type */
211 1, /* size (0 = byte, 1 = short, 2 = long) */
213 false, /* pc_relative */
215 complain_overflow_dont, /* complain_on_overflow */
216 bfd_elf_generic_reloc, /* special_function */
217 "R_PPC64_ADDR16_HI", /* name */
218 false, /* partial_inplace */
220 0xffff, /* dst_mask */
221 false), /* pcrel_offset */
223 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
224 bits, treated as a signed number, is negative. */
225 HOWTO (R_PPC64_ADDR16_HA, /* type */
227 1, /* size (0 = byte, 1 = short, 2 = long) */
229 false, /* pc_relative */
231 complain_overflow_dont, /* complain_on_overflow */
232 ppc64_elf_ha_reloc, /* special_function */
233 "R_PPC64_ADDR16_HA", /* name */
234 false, /* partial_inplace */
236 0xffff, /* dst_mask */
237 false), /* pcrel_offset */
239 /* An absolute 16 bit branch; the lower two bits must be zero.
240 FIXME: we don't check that, we just clear them. */
241 HOWTO (R_PPC64_ADDR14, /* type */
243 2, /* size (0 = byte, 1 = short, 2 = long) */
245 false, /* pc_relative */
247 complain_overflow_bitfield, /* complain_on_overflow */
248 bfd_elf_generic_reloc, /* special_function */
249 "R_PPC64_ADDR14", /* name */
250 false, /* partial_inplace */
252 0x0000fffc, /* dst_mask */
253 false), /* pcrel_offset */
255 /* An absolute 16 bit branch, for which bit 10 should be set to
256 indicate that the branch is expected to be taken. The lower two
257 bits must be zero. */
258 HOWTO (R_PPC64_ADDR14_BRTAKEN, /* type */
260 2, /* size (0 = byte, 1 = short, 2 = long) */
262 false, /* pc_relative */
264 complain_overflow_bitfield, /* complain_on_overflow */
265 ppc64_elf_brtaken_reloc, /* special_function */
266 "R_PPC64_ADDR14_BRTAKEN",/* name */
267 false, /* partial_inplace */
269 0x0000fffc, /* dst_mask */
270 false), /* pcrel_offset */
272 /* An absolute 16 bit branch, for which bit 10 should be set to
273 indicate that the branch is not expected to be taken. The lower
274 two bits must be zero. */
275 HOWTO (R_PPC64_ADDR14_BRNTAKEN, /* type */
277 2, /* size (0 = byte, 1 = short, 2 = long) */
279 false, /* pc_relative */
281 complain_overflow_bitfield, /* complain_on_overflow */
282 ppc64_elf_brtaken_reloc, /* special_function */
283 "R_PPC64_ADDR14_BRNTAKEN",/* name */
284 false, /* partial_inplace */
286 0x0000fffc, /* dst_mask */
287 false), /* pcrel_offset */
289 /* A relative 26 bit branch; the lower two bits must be zero. */
290 HOWTO (R_PPC64_REL24, /* 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_PPC64_REL24", /* name */
299 false, /* partial_inplace */
301 0x03fffffc, /* dst_mask */
302 true), /* pcrel_offset */
304 /* A relative 16 bit branch; the lower two bits must be zero. */
305 HOWTO (R_PPC64_REL14, /* type */
307 2, /* size (0 = byte, 1 = short, 2 = long) */
309 true, /* pc_relative */
311 complain_overflow_signed, /* complain_on_overflow */
312 bfd_elf_generic_reloc, /* special_function */
313 "R_PPC64_REL14", /* name */
314 false, /* partial_inplace */
316 0x0000fffc, /* dst_mask */
317 true), /* pcrel_offset */
319 /* A relative 16 bit branch. Bit 10 should be set to indicate that
320 the branch is expected to be taken. The lower two bits must be
322 HOWTO (R_PPC64_REL14_BRTAKEN, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 true, /* pc_relative */
328 complain_overflow_signed, /* complain_on_overflow */
329 ppc64_elf_brtaken_reloc, /* special_function */
330 "R_PPC64_REL14_BRTAKEN", /* name */
331 false, /* partial_inplace */
333 0x0000fffc, /* dst_mask */
334 true), /* pcrel_offset */
336 /* A relative 16 bit branch. Bit 10 should be set to indicate that
337 the branch is not expected to be taken. The lower two bits must
339 HOWTO (R_PPC64_REL14_BRNTAKEN, /* type */
341 2, /* size (0 = byte, 1 = short, 2 = long) */
343 true, /* pc_relative */
345 complain_overflow_signed, /* complain_on_overflow */
346 ppc64_elf_brtaken_reloc, /* special_function */
347 "R_PPC64_REL14_BRNTAKEN",/* name */
348 false, /* partial_inplace */
350 0x0000fffc, /* dst_mask */
351 true), /* pcrel_offset */
353 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
355 HOWTO (R_PPC64_GOT16, /* type */
357 1, /* size (0 = byte, 1 = short, 2 = long) */
359 false, /* pc_relative */
361 complain_overflow_signed, /* complain_on_overflow */
362 ppc64_elf_unhandled_reloc, /* special_function */
363 "R_PPC64_GOT16", /* name */
364 false, /* partial_inplace */
366 0xffff, /* dst_mask */
367 false), /* pcrel_offset */
369 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
371 HOWTO (R_PPC64_GOT16_LO, /* type */
373 1, /* size (0 = byte, 1 = short, 2 = long) */
375 false, /* pc_relative */
377 complain_overflow_dont, /* complain_on_overflow */
378 ppc64_elf_unhandled_reloc, /* special_function */
379 "R_PPC64_GOT16_LO", /* name */
380 false, /* partial_inplace */
382 0xffff, /* dst_mask */
383 false), /* pcrel_offset */
385 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
387 HOWTO (R_PPC64_GOT16_HI, /* type */
389 1, /* size (0 = byte, 1 = short, 2 = long) */
391 false, /* pc_relative */
393 complain_overflow_dont,/* complain_on_overflow */
394 ppc64_elf_unhandled_reloc, /* special_function */
395 "R_PPC64_GOT16_HI", /* name */
396 false, /* partial_inplace */
398 0xffff, /* dst_mask */
399 false), /* pcrel_offset */
401 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
403 HOWTO (R_PPC64_GOT16_HA, /* type */
405 1, /* size (0 = byte, 1 = short, 2 = long) */
407 false, /* pc_relative */
409 complain_overflow_dont,/* complain_on_overflow */
410 ppc64_elf_unhandled_reloc, /* special_function */
411 "R_PPC64_GOT16_HA", /* name */
412 false, /* partial_inplace */
414 0xffff, /* dst_mask */
415 false), /* pcrel_offset */
417 /* This is used only by the dynamic linker. The symbol should exist
418 both in the object being run and in some shared library. The
419 dynamic linker copies the data addressed by the symbol from the
420 shared library into the object, because the object being
421 run has to have the data at some particular address. */
422 HOWTO (R_PPC64_COPY, /* type */
424 0, /* this one is variable size */
426 false, /* pc_relative */
428 complain_overflow_dont, /* complain_on_overflow */
429 ppc64_elf_unhandled_reloc, /* special_function */
430 "R_PPC64_COPY", /* name */
431 false, /* partial_inplace */
434 false), /* pcrel_offset */
436 /* Like R_PPC64_ADDR64, but used when setting global offset table
438 HOWTO (R_PPC64_GLOB_DAT, /* type */
440 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
442 false, /* pc_relative */
444 complain_overflow_dont, /* complain_on_overflow */
445 ppc64_elf_unhandled_reloc, /* special_function */
446 "R_PPC64_GLOB_DAT", /* name */
447 false, /* partial_inplace */
449 ONES (64), /* dst_mask */
450 false), /* pcrel_offset */
452 /* Created by the link editor. Marks a procedure linkage table
453 entry for a symbol. */
454 HOWTO (R_PPC64_JMP_SLOT, /* type */
456 0, /* size (0 = byte, 1 = short, 2 = long) */
458 false, /* pc_relative */
460 complain_overflow_dont, /* complain_on_overflow */
461 ppc64_elf_unhandled_reloc, /* special_function */
462 "R_PPC64_JMP_SLOT", /* name */
463 false, /* partial_inplace */
466 false), /* pcrel_offset */
468 /* Used only by the dynamic linker. When the object is run, this
469 doubleword64 is set to the load address of the object, plus the
471 HOWTO (R_PPC64_RELATIVE, /* type */
473 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
475 false, /* pc_relative */
477 complain_overflow_dont, /* complain_on_overflow */
478 bfd_elf_generic_reloc, /* special_function */
479 "R_PPC64_RELATIVE", /* name */
480 false, /* partial_inplace */
482 ONES (64), /* dst_mask */
483 false), /* pcrel_offset */
485 /* Like R_PPC64_ADDR32, but may be unaligned. */
486 HOWTO (R_PPC64_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_PPC64_UADDR32", /* name */
495 false, /* partial_inplace */
497 0xffffffff, /* dst_mask */
498 false), /* pcrel_offset */
500 /* Like R_PPC64_ADDR16, but may be unaligned. */
501 HOWTO (R_PPC64_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_PPC64_UADDR16", /* name */
510 false, /* partial_inplace */
512 0xffff, /* dst_mask */
513 false), /* pcrel_offset */
515 /* 32-bit PC relative. */
516 HOWTO (R_PPC64_REL32, /* type */
518 2, /* size (0 = byte, 1 = short, 2 = long) */
520 true, /* pc_relative */
522 /* FIXME: Verify. Was complain_overflow_bitfield. */
523 complain_overflow_signed, /* complain_on_overflow */
524 bfd_elf_generic_reloc, /* special_function */
525 "R_PPC64_REL32", /* name */
526 false, /* partial_inplace */
528 0xffffffff, /* dst_mask */
529 true), /* pcrel_offset */
531 /* 32-bit relocation to the symbol's procedure linkage table. */
532 HOWTO (R_PPC64_PLT32, /* type */
534 2, /* size (0 = byte, 1 = short, 2 = long) */
536 false, /* pc_relative */
538 complain_overflow_bitfield, /* complain_on_overflow */
539 ppc64_elf_unhandled_reloc, /* special_function */
540 "R_PPC64_PLT32", /* name */
541 false, /* partial_inplace */
543 0xffffffff, /* dst_mask */
544 false), /* pcrel_offset */
546 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
547 FIXME: R_PPC64_PLTREL32 not supported. */
548 HOWTO (R_PPC64_PLTREL32, /* type */
550 2, /* size (0 = byte, 1 = short, 2 = long) */
552 true, /* pc_relative */
554 complain_overflow_signed, /* complain_on_overflow */
555 bfd_elf_generic_reloc, /* special_function */
556 "R_PPC64_PLTREL32", /* name */
557 false, /* partial_inplace */
559 0xffffffff, /* dst_mask */
560 true), /* pcrel_offset */
562 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
564 HOWTO (R_PPC64_PLT16_LO, /* type */
566 1, /* size (0 = byte, 1 = short, 2 = long) */
568 false, /* pc_relative */
570 complain_overflow_dont, /* complain_on_overflow */
571 ppc64_elf_unhandled_reloc, /* special_function */
572 "R_PPC64_PLT16_LO", /* name */
573 false, /* partial_inplace */
575 0xffff, /* dst_mask */
576 false), /* pcrel_offset */
578 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
580 HOWTO (R_PPC64_PLT16_HI, /* type */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
584 false, /* pc_relative */
586 complain_overflow_dont, /* complain_on_overflow */
587 ppc64_elf_unhandled_reloc, /* special_function */
588 "R_PPC64_PLT16_HI", /* name */
589 false, /* partial_inplace */
591 0xffff, /* dst_mask */
592 false), /* pcrel_offset */
594 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
596 HOWTO (R_PPC64_PLT16_HA, /* type */
598 1, /* size (0 = byte, 1 = short, 2 = long) */
600 false, /* pc_relative */
602 complain_overflow_dont, /* complain_on_overflow */
603 ppc64_elf_unhandled_reloc, /* special_function */
604 "R_PPC64_PLT16_HA", /* name */
605 false, /* partial_inplace */
607 0xffff, /* dst_mask */
608 false), /* pcrel_offset */
610 /* 16-bit section relative relocation. */
611 HOWTO (R_PPC64_SECTOFF, /* type */
613 1, /* size (0 = byte, 1 = short, 2 = long) */
615 false, /* pc_relative */
617 complain_overflow_bitfield, /* complain_on_overflow */
618 ppc64_elf_sectoff_reloc, /* special_function */
619 "R_PPC64_SECTOFF", /* name */
620 false, /* partial_inplace */
622 0xffff, /* dst_mask */
623 false), /* pcrel_offset */
625 /* Like R_PPC64_SECTOFF, but no overflow warning. */
626 HOWTO (R_PPC64_SECTOFF_LO, /* type */
628 1, /* size (0 = byte, 1 = short, 2 = long) */
630 false, /* pc_relative */
632 complain_overflow_dont, /* complain_on_overflow */
633 ppc64_elf_sectoff_reloc, /* special_function */
634 "R_PPC64_SECTOFF_LO", /* name */
635 false, /* partial_inplace */
637 0xffff, /* dst_mask */
638 false), /* pcrel_offset */
640 /* 16-bit upper half section relative relocation. */
641 HOWTO (R_PPC64_SECTOFF_HI, /* type */
643 1, /* size (0 = byte, 1 = short, 2 = long) */
645 false, /* pc_relative */
647 complain_overflow_dont, /* complain_on_overflow */
648 ppc64_elf_sectoff_reloc, /* special_function */
649 "R_PPC64_SECTOFF_HI", /* name */
650 false, /* partial_inplace */
652 0xffff, /* dst_mask */
653 false), /* pcrel_offset */
655 /* 16-bit upper half adjusted section relative relocation. */
656 HOWTO (R_PPC64_SECTOFF_HA, /* type */
658 1, /* size (0 = byte, 1 = short, 2 = long) */
660 false, /* pc_relative */
662 complain_overflow_dont, /* complain_on_overflow */
663 ppc64_elf_sectoff_ha_reloc, /* special_function */
664 "R_PPC64_SECTOFF_HA", /* name */
665 false, /* partial_inplace */
667 0xffff, /* dst_mask */
668 false), /* pcrel_offset */
670 /* Like R_PPC64_REL24 without touching the two least significant
671 bits. Should have been named R_PPC64_REL30! */
672 HOWTO (R_PPC64_ADDR30, /* type */
674 2, /* size (0 = byte, 1 = short, 2 = long) */
676 true, /* pc_relative */
678 complain_overflow_dont, /* complain_on_overflow */
679 bfd_elf_generic_reloc, /* special_function */
680 "R_PPC64_ADDR30", /* name */
681 false, /* partial_inplace */
683 0xfffffffc, /* dst_mask */
684 true), /* pcrel_offset */
686 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
688 /* A standard 64-bit relocation. */
689 HOWTO (R_PPC64_ADDR64, /* type */
691 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
693 false, /* pc_relative */
695 complain_overflow_dont, /* complain_on_overflow */
696 bfd_elf_generic_reloc, /* special_function */
697 "R_PPC64_ADDR64", /* name */
698 false, /* partial_inplace */
700 ONES (64), /* dst_mask */
701 false), /* pcrel_offset */
703 /* The bits 32-47 of an address. */
704 HOWTO (R_PPC64_ADDR16_HIGHER, /* type */
706 1, /* size (0 = byte, 1 = short, 2 = long) */
708 false, /* pc_relative */
710 complain_overflow_dont, /* complain_on_overflow */
711 bfd_elf_generic_reloc, /* special_function */
712 "R_PPC64_ADDR16_HIGHER", /* name */
713 false, /* partial_inplace */
715 0xffff, /* dst_mask */
716 false), /* pcrel_offset */
718 /* The bits 32-47 of an address, plus 1 if the contents of the low
719 16 bits, treated as a signed number, is negative. */
720 HOWTO (R_PPC64_ADDR16_HIGHERA, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 false, /* pc_relative */
726 complain_overflow_dont, /* complain_on_overflow */
727 ppc64_elf_ha_reloc, /* special_function */
728 "R_PPC64_ADDR16_HIGHERA", /* name */
729 false, /* partial_inplace */
731 0xffff, /* dst_mask */
732 false), /* pcrel_offset */
734 /* The bits 48-63 of an address. */
735 HOWTO (R_PPC64_ADDR16_HIGHEST,/* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 false, /* pc_relative */
741 complain_overflow_dont, /* complain_on_overflow */
742 bfd_elf_generic_reloc, /* special_function */
743 "R_PPC64_ADDR16_HIGHEST", /* name */
744 false, /* partial_inplace */
746 0xffff, /* dst_mask */
747 false), /* pcrel_offset */
749 /* The bits 48-63 of an address, plus 1 if the contents of the low
750 16 bits, treated as a signed number, is negative. */
751 HOWTO (R_PPC64_ADDR16_HIGHESTA,/* type */
753 1, /* size (0 = byte, 1 = short, 2 = long) */
755 false, /* pc_relative */
757 complain_overflow_dont, /* complain_on_overflow */
758 ppc64_elf_ha_reloc, /* special_function */
759 "R_PPC64_ADDR16_HIGHESTA", /* name */
760 false, /* partial_inplace */
762 0xffff, /* dst_mask */
763 false), /* pcrel_offset */
765 /* Like ADDR64, but may be unaligned. */
766 HOWTO (R_PPC64_UADDR64, /* type */
768 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
770 false, /* pc_relative */
772 complain_overflow_dont, /* complain_on_overflow */
773 bfd_elf_generic_reloc, /* special_function */
774 "R_PPC64_UADDR64", /* name */
775 false, /* partial_inplace */
777 ONES (64), /* dst_mask */
778 false), /* pcrel_offset */
780 /* 64-bit relative relocation. */
781 HOWTO (R_PPC64_REL64, /* type */
783 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
785 true, /* pc_relative */
787 complain_overflow_dont, /* complain_on_overflow */
788 bfd_elf_generic_reloc, /* special_function */
789 "R_PPC64_REL64", /* name */
790 false, /* partial_inplace */
792 ONES (64), /* dst_mask */
793 true), /* pcrel_offset */
795 /* 64-bit relocation to the symbol's procedure linkage table. */
796 HOWTO (R_PPC64_PLT64, /* type */
798 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
800 false, /* pc_relative */
802 complain_overflow_dont, /* complain_on_overflow */
803 ppc64_elf_unhandled_reloc, /* special_function */
804 "R_PPC64_PLT64", /* name */
805 false, /* partial_inplace */
807 ONES (64), /* dst_mask */
808 false), /* pcrel_offset */
810 /* 64-bit PC relative relocation to the symbol's procedure linkage
812 /* FIXME: R_PPC64_PLTREL64 not supported. */
813 HOWTO (R_PPC64_PLTREL64, /* type */
815 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
817 true, /* pc_relative */
819 complain_overflow_dont, /* complain_on_overflow */
820 ppc64_elf_unhandled_reloc, /* special_function */
821 "R_PPC64_PLTREL64", /* name */
822 false, /* partial_inplace */
824 ONES (64), /* dst_mask */
825 true), /* pcrel_offset */
827 /* 16 bit TOC-relative relocation. */
829 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
830 HOWTO (R_PPC64_TOC16, /* type */
832 1, /* size (0 = byte, 1 = short, 2 = long) */
834 false, /* pc_relative */
836 complain_overflow_signed, /* complain_on_overflow */
837 ppc64_elf_toc_reloc, /* special_function */
838 "R_PPC64_TOC16", /* name */
839 false, /* partial_inplace */
841 0xffff, /* dst_mask */
842 false), /* pcrel_offset */
844 /* 16 bit TOC-relative relocation without overflow. */
846 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
847 HOWTO (R_PPC64_TOC16_LO, /* type */
849 1, /* size (0 = byte, 1 = short, 2 = long) */
851 false, /* pc_relative */
853 complain_overflow_dont, /* complain_on_overflow */
854 ppc64_elf_toc_reloc, /* special_function */
855 "R_PPC64_TOC16_LO", /* name */
856 false, /* partial_inplace */
858 0xffff, /* dst_mask */
859 false), /* pcrel_offset */
861 /* 16 bit TOC-relative relocation, high 16 bits. */
863 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
864 HOWTO (R_PPC64_TOC16_HI, /* type */
866 1, /* size (0 = byte, 1 = short, 2 = long) */
868 false, /* pc_relative */
870 complain_overflow_dont, /* complain_on_overflow */
871 ppc64_elf_toc_reloc, /* special_function */
872 "R_PPC64_TOC16_HI", /* name */
873 false, /* partial_inplace */
875 0xffff, /* dst_mask */
876 false), /* pcrel_offset */
878 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
879 contents of the low 16 bits, treated as a signed number, is
882 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
883 HOWTO (R_PPC64_TOC16_HA, /* type */
885 1, /* size (0 = byte, 1 = short, 2 = long) */
887 false, /* pc_relative */
889 complain_overflow_dont, /* complain_on_overflow */
890 ppc64_elf_toc_ha_reloc, /* special_function */
891 "R_PPC64_TOC16_HA", /* name */
892 false, /* partial_inplace */
894 0xffff, /* dst_mask */
895 false), /* pcrel_offset */
897 /* 64-bit relocation; insert value of TOC base (.TOC.). */
899 /* R_PPC64_TOC 51 doubleword64 .TOC. */
900 HOWTO (R_PPC64_TOC, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 false, /* pc_relative */
906 complain_overflow_bitfield, /* complain_on_overflow */
907 ppc64_elf_toc64_reloc, /* special_function */
908 "R_PPC64_TOC", /* name */
909 false, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 false), /* pcrel_offset */
914 /* Like R_PPC64_GOT16, but also informs the link editor that the
915 value to relocate may (!) refer to a PLT entry which the link
916 editor (a) may replace with the symbol value. If the link editor
917 is unable to fully resolve the symbol, it may (b) create a PLT
918 entry and store the address to the new PLT entry in the GOT.
919 This permits lazy resolution of function symbols at run time.
920 The link editor may also skip all of this and just (c) emit a
921 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
922 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
923 HOWTO (R_PPC64_PLTGOT16, /* type */
925 1, /* size (0 = byte, 1 = short, 2 = long) */
927 false, /* pc_relative */
929 complain_overflow_signed, /* complain_on_overflow */
930 ppc64_elf_unhandled_reloc, /* special_function */
931 "R_PPC64_PLTGOT16", /* name */
932 false, /* partial_inplace */
934 0xffff, /* dst_mask */
935 false), /* pcrel_offset */
937 /* Like R_PPC64_PLTGOT16, but without overflow. */
938 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
939 HOWTO (R_PPC64_PLTGOT16_LO, /* type */
941 1, /* size (0 = byte, 1 = short, 2 = long) */
943 false, /* pc_relative */
945 complain_overflow_dont, /* complain_on_overflow */
946 ppc64_elf_unhandled_reloc, /* special_function */
947 "R_PPC64_PLTGOT16_LO", /* name */
948 false, /* partial_inplace */
950 0xffff, /* dst_mask */
951 false), /* pcrel_offset */
953 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
954 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
955 HOWTO (R_PPC64_PLTGOT16_HI, /* type */
957 1, /* size (0 = byte, 1 = short, 2 = long) */
959 false, /* pc_relative */
961 complain_overflow_dont, /* complain_on_overflow */
962 ppc64_elf_unhandled_reloc, /* special_function */
963 "R_PPC64_PLTGOT16_HI", /* name */
964 false, /* partial_inplace */
966 0xffff, /* dst_mask */
967 false), /* pcrel_offset */
969 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
970 1 if the contents of the low 16 bits, treated as a signed number,
972 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
973 HOWTO (R_PPC64_PLTGOT16_HA, /* type */
975 1, /* size (0 = byte, 1 = short, 2 = long) */
977 false, /* pc_relative */
979 complain_overflow_dont,/* complain_on_overflow */
980 ppc64_elf_unhandled_reloc, /* special_function */
981 "R_PPC64_PLTGOT16_HA", /* name */
982 false, /* partial_inplace */
984 0xffff, /* dst_mask */
985 false), /* pcrel_offset */
987 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
988 HOWTO (R_PPC64_ADDR16_DS, /* type */
990 1, /* size (0 = byte, 1 = short, 2 = long) */
992 false, /* pc_relative */
994 complain_overflow_bitfield, /* complain_on_overflow */
995 bfd_elf_generic_reloc, /* special_function */
996 "R_PPC64_ADDR16_DS", /* name */
997 false, /* partial_inplace */
999 0xfffc, /* dst_mask */
1000 false), /* pcrel_offset */
1002 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1003 HOWTO (R_PPC64_ADDR16_LO_DS, /* type */
1005 1, /* size (0 = byte, 1 = short, 2 = long) */
1007 false, /* pc_relative */
1009 complain_overflow_dont,/* complain_on_overflow */
1010 bfd_elf_generic_reloc, /* special_function */
1011 "R_PPC64_ADDR16_LO_DS",/* name */
1012 false, /* partial_inplace */
1014 0xfffc, /* dst_mask */
1015 false), /* pcrel_offset */
1017 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1018 HOWTO (R_PPC64_GOT16_DS, /* type */
1020 1, /* size (0 = byte, 1 = short, 2 = long) */
1022 false, /* pc_relative */
1024 complain_overflow_signed, /* complain_on_overflow */
1025 ppc64_elf_unhandled_reloc, /* special_function */
1026 "R_PPC64_GOT16_DS", /* name */
1027 false, /* partial_inplace */
1029 0xfffc, /* dst_mask */
1030 false), /* pcrel_offset */
1032 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1033 HOWTO (R_PPC64_GOT16_LO_DS, /* type */
1035 1, /* size (0 = byte, 1 = short, 2 = long) */
1037 false, /* pc_relative */
1039 complain_overflow_dont, /* complain_on_overflow */
1040 ppc64_elf_unhandled_reloc, /* special_function */
1041 "R_PPC64_GOT16_LO_DS", /* name */
1042 false, /* partial_inplace */
1044 0xfffc, /* dst_mask */
1045 false), /* pcrel_offset */
1047 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1048 HOWTO (R_PPC64_PLT16_LO_DS, /* type */
1050 1, /* size (0 = byte, 1 = short, 2 = long) */
1052 false, /* pc_relative */
1054 complain_overflow_dont, /* complain_on_overflow */
1055 ppc64_elf_unhandled_reloc, /* special_function */
1056 "R_PPC64_PLT16_LO_DS", /* name */
1057 false, /* partial_inplace */
1059 0xfffc, /* dst_mask */
1060 false), /* pcrel_offset */
1062 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1063 HOWTO (R_PPC64_SECTOFF_DS, /* type */
1065 1, /* size (0 = byte, 1 = short, 2 = long) */
1067 false, /* pc_relative */
1069 complain_overflow_bitfield, /* complain_on_overflow */
1070 ppc64_elf_sectoff_reloc, /* special_function */
1071 "R_PPC64_SECTOFF_DS", /* name */
1072 false, /* partial_inplace */
1074 0xfffc, /* dst_mask */
1075 false), /* pcrel_offset */
1077 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1078 HOWTO (R_PPC64_SECTOFF_LO_DS, /* type */
1080 1, /* size (0 = byte, 1 = short, 2 = long) */
1082 false, /* pc_relative */
1084 complain_overflow_dont, /* complain_on_overflow */
1085 ppc64_elf_sectoff_reloc, /* special_function */
1086 "R_PPC64_SECTOFF_LO_DS",/* name */
1087 false, /* partial_inplace */
1089 0xfffc, /* dst_mask */
1090 false), /* pcrel_offset */
1092 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1093 HOWTO (R_PPC64_TOC16_DS, /* type */
1095 1, /* size (0 = byte, 1 = short, 2 = long) */
1097 false, /* pc_relative */
1099 complain_overflow_signed, /* complain_on_overflow */
1100 ppc64_elf_toc_reloc, /* special_function */
1101 "R_PPC64_TOC16_DS", /* name */
1102 false, /* partial_inplace */
1104 0xfffc, /* dst_mask */
1105 false), /* pcrel_offset */
1107 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1108 HOWTO (R_PPC64_TOC16_LO_DS, /* type */
1110 1, /* size (0 = byte, 1 = short, 2 = long) */
1112 false, /* pc_relative */
1114 complain_overflow_dont, /* complain_on_overflow */
1115 ppc64_elf_toc_reloc, /* special_function */
1116 "R_PPC64_TOC16_LO_DS", /* name */
1117 false, /* partial_inplace */
1119 0xfffc, /* dst_mask */
1120 false), /* pcrel_offset */
1122 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1123 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1124 HOWTO (R_PPC64_PLTGOT16_DS, /* type */
1126 1, /* size (0 = byte, 1 = short, 2 = long) */
1128 false, /* pc_relative */
1130 complain_overflow_signed, /* complain_on_overflow */
1131 ppc64_elf_unhandled_reloc, /* special_function */
1132 "R_PPC64_PLTGOT16_DS", /* name */
1133 false, /* partial_inplace */
1135 0xfffc, /* dst_mask */
1136 false), /* pcrel_offset */
1138 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1139 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1140 HOWTO (R_PPC64_PLTGOT16_LO_DS,/* type */
1142 1, /* size (0 = byte, 1 = short, 2 = long) */
1144 false, /* pc_relative */
1146 complain_overflow_dont, /* complain_on_overflow */
1147 ppc64_elf_unhandled_reloc, /* special_function */
1148 "R_PPC64_PLTGOT16_LO_DS",/* name */
1149 false, /* partial_inplace */
1151 0xfffc, /* dst_mask */
1152 false), /* pcrel_offset */
1154 /* GNU extension to record C++ vtable hierarchy. */
1155 HOWTO (R_PPC64_GNU_VTINHERIT, /* type */
1157 0, /* size (0 = byte, 1 = short, 2 = long) */
1159 false, /* pc_relative */
1161 complain_overflow_dont, /* complain_on_overflow */
1162 NULL, /* special_function */
1163 "R_PPC64_GNU_VTINHERIT", /* name */
1164 false, /* partial_inplace */
1167 false), /* pcrel_offset */
1169 /* GNU extension to record C++ vtable member usage. */
1170 HOWTO (R_PPC64_GNU_VTENTRY, /* type */
1172 0, /* size (0 = byte, 1 = short, 2 = long) */
1174 false, /* pc_relative */
1176 complain_overflow_dont, /* complain_on_overflow */
1177 NULL, /* special_function */
1178 "R_PPC64_GNU_VTENTRY", /* name */
1179 false, /* partial_inplace */
1182 false), /* pcrel_offset */
1186 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1192 unsigned int i, type;
1195 i < sizeof (ppc64_elf_howto_raw) / sizeof (ppc64_elf_howto_raw[0]);
1198 type = ppc64_elf_howto_raw[i].type;
1199 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1200 / sizeof (ppc64_elf_howto_table[0])));
1201 ppc64_elf_howto_table[type] = &ppc64_elf_howto_raw[i];
1205 static reloc_howto_type *
1206 ppc64_elf_reloc_type_lookup (abfd, code)
1207 bfd *abfd ATTRIBUTE_UNUSED;
1208 bfd_reloc_code_real_type code;
1210 enum elf_ppc_reloc_type ppc_reloc = R_PPC_NONE;
1212 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1213 /* Initialize howto table if needed. */
1219 return (reloc_howto_type *) NULL;
1221 case BFD_RELOC_NONE: ppc_reloc = R_PPC64_NONE;
1223 case BFD_RELOC_32: ppc_reloc = R_PPC64_ADDR32;
1225 case BFD_RELOC_PPC_BA26: ppc_reloc = R_PPC64_ADDR24;
1227 case BFD_RELOC_16: ppc_reloc = R_PPC64_ADDR16;
1229 case BFD_RELOC_LO16: ppc_reloc = R_PPC64_ADDR16_LO;
1231 case BFD_RELOC_HI16: ppc_reloc = R_PPC64_ADDR16_HI;
1233 case BFD_RELOC_HI16_S: ppc_reloc = R_PPC64_ADDR16_HA;
1235 case BFD_RELOC_PPC_BA16: ppc_reloc = R_PPC64_ADDR14;
1237 case BFD_RELOC_PPC_BA16_BRTAKEN: ppc_reloc = R_PPC64_ADDR14_BRTAKEN;
1239 case BFD_RELOC_PPC_BA16_BRNTAKEN: ppc_reloc = R_PPC64_ADDR14_BRNTAKEN;
1241 case BFD_RELOC_PPC_B26: ppc_reloc = R_PPC64_REL24;
1243 case BFD_RELOC_PPC_B16: ppc_reloc = R_PPC64_REL14;
1245 case BFD_RELOC_PPC_B16_BRTAKEN: ppc_reloc = R_PPC64_REL14_BRTAKEN;
1247 case BFD_RELOC_PPC_B16_BRNTAKEN: ppc_reloc = R_PPC64_REL14_BRNTAKEN;
1249 case BFD_RELOC_16_GOTOFF: ppc_reloc = R_PPC64_GOT16;
1251 case BFD_RELOC_LO16_GOTOFF: ppc_reloc = R_PPC64_GOT16_LO;
1253 case BFD_RELOC_HI16_GOTOFF: ppc_reloc = R_PPC64_GOT16_HI;
1255 case BFD_RELOC_HI16_S_GOTOFF: ppc_reloc = R_PPC64_GOT16_HA;
1257 case BFD_RELOC_PPC_COPY: ppc_reloc = R_PPC64_COPY;
1259 case BFD_RELOC_PPC_GLOB_DAT: ppc_reloc = R_PPC64_GLOB_DAT;
1261 case BFD_RELOC_32_PCREL: ppc_reloc = R_PPC64_REL32;
1263 case BFD_RELOC_32_PLTOFF: ppc_reloc = R_PPC64_PLT32;
1265 case BFD_RELOC_32_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL32;
1267 case BFD_RELOC_LO16_PLTOFF: ppc_reloc = R_PPC64_PLT16_LO;
1269 case BFD_RELOC_HI16_PLTOFF: ppc_reloc = R_PPC64_PLT16_HI;
1271 case BFD_RELOC_HI16_S_PLTOFF: ppc_reloc = R_PPC64_PLT16_HA;
1273 case BFD_RELOC_16_BASEREL: ppc_reloc = R_PPC64_SECTOFF;
1275 case BFD_RELOC_LO16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_LO;
1277 case BFD_RELOC_HI16_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HI;
1279 case BFD_RELOC_HI16_S_BASEREL: ppc_reloc = R_PPC64_SECTOFF_HA;
1281 case BFD_RELOC_CTOR: ppc_reloc = R_PPC64_ADDR64;
1283 case BFD_RELOC_64: ppc_reloc = R_PPC64_ADDR64;
1285 case BFD_RELOC_PPC64_HIGHER: ppc_reloc = R_PPC64_ADDR16_HIGHER;
1287 case BFD_RELOC_PPC64_HIGHER_S: ppc_reloc = R_PPC64_ADDR16_HIGHERA;
1289 case BFD_RELOC_PPC64_HIGHEST: ppc_reloc = R_PPC64_ADDR16_HIGHEST;
1291 case BFD_RELOC_PPC64_HIGHEST_S: ppc_reloc = R_PPC64_ADDR16_HIGHESTA;
1293 case BFD_RELOC_64_PCREL: ppc_reloc = R_PPC64_REL64;
1295 case BFD_RELOC_64_PLTOFF: ppc_reloc = R_PPC64_PLT64;
1297 case BFD_RELOC_64_PLT_PCREL: ppc_reloc = R_PPC64_PLTREL64;
1299 case BFD_RELOC_PPC_TOC16: ppc_reloc = R_PPC64_TOC16;
1301 case BFD_RELOC_PPC64_TOC16_LO: ppc_reloc = R_PPC64_TOC16_LO;
1303 case BFD_RELOC_PPC64_TOC16_HI: ppc_reloc = R_PPC64_TOC16_HI;
1305 case BFD_RELOC_PPC64_TOC16_HA: ppc_reloc = R_PPC64_TOC16_HA;
1307 case BFD_RELOC_PPC64_TOC: ppc_reloc = R_PPC64_TOC;
1309 case BFD_RELOC_PPC64_PLTGOT16: ppc_reloc = R_PPC64_PLTGOT16;
1311 case BFD_RELOC_PPC64_PLTGOT16_LO: ppc_reloc = R_PPC64_PLTGOT16_LO;
1313 case BFD_RELOC_PPC64_PLTGOT16_HI: ppc_reloc = R_PPC64_PLTGOT16_HI;
1315 case BFD_RELOC_PPC64_PLTGOT16_HA: ppc_reloc = R_PPC64_PLTGOT16_HA;
1317 case BFD_RELOC_PPC64_ADDR16_DS: ppc_reloc = R_PPC64_ADDR16_DS;
1319 case BFD_RELOC_PPC64_ADDR16_LO_DS: ppc_reloc = R_PPC64_ADDR16_LO_DS;
1321 case BFD_RELOC_PPC64_GOT16_DS: ppc_reloc = R_PPC64_GOT16_DS;
1323 case BFD_RELOC_PPC64_GOT16_LO_DS: ppc_reloc = R_PPC64_GOT16_LO_DS;
1325 case BFD_RELOC_PPC64_PLT16_LO_DS: ppc_reloc = R_PPC64_PLT16_LO_DS;
1327 case BFD_RELOC_PPC64_SECTOFF_DS: ppc_reloc = R_PPC64_SECTOFF_DS;
1329 case BFD_RELOC_PPC64_SECTOFF_LO_DS: ppc_reloc = R_PPC64_SECTOFF_LO_DS;
1331 case BFD_RELOC_PPC64_TOC16_DS: ppc_reloc = R_PPC64_TOC16_DS;
1333 case BFD_RELOC_PPC64_TOC16_LO_DS: ppc_reloc = R_PPC64_TOC16_LO_DS;
1335 case BFD_RELOC_PPC64_PLTGOT16_DS: ppc_reloc = R_PPC64_PLTGOT16_DS;
1337 case BFD_RELOC_PPC64_PLTGOT16_LO_DS: ppc_reloc = R_PPC64_PLTGOT16_LO_DS;
1339 case BFD_RELOC_VTABLE_INHERIT: ppc_reloc = R_PPC64_GNU_VTINHERIT;
1341 case BFD_RELOC_VTABLE_ENTRY: ppc_reloc = R_PPC64_GNU_VTENTRY;
1345 return ppc64_elf_howto_table[(int) ppc_reloc];
1348 /* Set the howto pointer for a PowerPC ELF reloc. */
1351 ppc64_elf_info_to_howto (abfd, cache_ptr, dst)
1352 bfd *abfd ATTRIBUTE_UNUSED;
1354 Elf64_Internal_Rela *dst;
1358 /* Initialize howto table if needed. */
1359 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
1362 type = ELF64_R_TYPE (dst->r_info);
1363 BFD_ASSERT (type < (sizeof (ppc64_elf_howto_table)
1364 / sizeof (ppc64_elf_howto_table[0])));
1365 cache_ptr->howto = ppc64_elf_howto_table[type];
1368 /* Handle the R_PPC_ADDR16_HA and similar relocs. */
1370 static bfd_reloc_status_type
1371 ppc64_elf_ha_reloc (abfd, reloc_entry, symbol, data,
1372 input_section, output_bfd, error_message)
1374 arelent *reloc_entry;
1377 asection *input_section;
1379 char **error_message;
1381 /* If this is a relocatable link (output_bfd test tells us), just
1382 call the generic function. Any adjustment will be done at final
1384 if (output_bfd != NULL)
1385 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1386 input_section, output_bfd, error_message);
1388 /* Adjust the addend for sign extension of the low 16 bits.
1389 We won't actually be using the low 16 bits, so trashing them
1391 reloc_entry->addend += 0x8000;
1392 return bfd_reloc_continue;
1395 static bfd_reloc_status_type
1396 ppc64_elf_brtaken_reloc (abfd, reloc_entry, symbol, data,
1397 input_section, output_bfd, error_message)
1399 arelent *reloc_entry;
1402 asection *input_section;
1404 char **error_message;
1407 enum elf_ppc_reloc_type r_type;
1408 bfd_size_type octets;
1409 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
1410 boolean is_power4 = false;
1412 /* If this is a relocatable link (output_bfd test tells us), just
1413 call the generic function. Any adjustment will be done at final
1415 if (output_bfd != NULL)
1416 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1417 input_section, output_bfd, error_message);
1419 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
1420 insn = bfd_get_32 (abfd, (bfd_byte *) data + octets);
1421 insn &= ~(0x01 << 21);
1422 r_type = (enum elf_ppc_reloc_type) reloc_entry->howto->type;
1423 if (r_type == R_PPC64_ADDR14_BRTAKEN
1424 || r_type == R_PPC64_REL14_BRTAKEN)
1425 insn |= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
1429 /* Set 'a' bit. This is 0b00010 in BO field for branch
1430 on CR(BI) insns (BO == 001at or 011at), and 0b01000
1431 for branch on CTR insns (BO == 1a00t or 1a01t). */
1432 if ((insn & (0x14 << 21)) == (0x04 << 21))
1434 else if ((insn & (0x14 << 21)) == (0x10 << 21))
1437 return bfd_reloc_continue;
1444 if (!bfd_is_com_section (symbol->section))
1445 target = symbol->value;
1446 target += symbol->section->output_section->vma;
1447 target += symbol->section->output_offset;
1448 target += reloc_entry->addend;
1450 from = (reloc_entry->address
1451 + input_section->output_offset
1452 + input_section->output_section->vma);
1454 /* Invert 'y' bit if not the default. */
1455 if ((bfd_signed_vma) (target - from) < 0)
1458 bfd_put_32 (abfd, (bfd_vma) insn, (bfd_byte *) data + octets);
1459 return bfd_reloc_continue;
1462 static bfd_reloc_status_type
1463 ppc64_elf_sectoff_reloc (abfd, reloc_entry, symbol, data,
1464 input_section, output_bfd, error_message)
1466 arelent *reloc_entry;
1469 asection *input_section;
1471 char **error_message;
1473 /* If this is a relocatable link (output_bfd test tells us), just
1474 call the generic function. Any adjustment will be done at final
1476 if (output_bfd != NULL)
1477 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1478 input_section, output_bfd, error_message);
1480 /* Subtract the symbol section base address. */
1481 reloc_entry->addend -= symbol->section->output_section->vma;
1482 return bfd_reloc_continue;
1485 static bfd_reloc_status_type
1486 ppc64_elf_sectoff_ha_reloc (abfd, reloc_entry, symbol, data,
1487 input_section, output_bfd, error_message)
1489 arelent *reloc_entry;
1492 asection *input_section;
1494 char **error_message;
1496 /* If this is a relocatable link (output_bfd test tells us), just
1497 call the generic function. Any adjustment will be done at final
1499 if (output_bfd != NULL)
1500 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1501 input_section, output_bfd, error_message);
1503 /* Subtract the symbol section base address. */
1504 reloc_entry->addend -= symbol->section->output_section->vma;
1506 /* Adjust the addend for sign extension of the low 16 bits. */
1507 reloc_entry->addend += 0x8000;
1508 return bfd_reloc_continue;
1511 static bfd_reloc_status_type
1512 ppc64_elf_toc_reloc (abfd, reloc_entry, symbol, data,
1513 input_section, output_bfd, error_message)
1515 arelent *reloc_entry;
1518 asection *input_section;
1520 char **error_message;
1524 /* If this is a relocatable link (output_bfd test tells us), just
1525 call the generic function. Any adjustment will be done at final
1527 if (output_bfd != NULL)
1528 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1529 input_section, output_bfd, error_message);
1531 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1533 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1535 /* Subtract the TOC base address. */
1536 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
1537 return bfd_reloc_continue;
1540 static bfd_reloc_status_type
1541 ppc64_elf_toc_ha_reloc (abfd, reloc_entry, symbol, data,
1542 input_section, output_bfd, error_message)
1544 arelent *reloc_entry;
1547 asection *input_section;
1549 char **error_message;
1553 /* If this is a relocatable link (output_bfd test tells us), just
1554 call the generic function. Any adjustment will be done at final
1556 if (output_bfd != NULL)
1557 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1558 input_section, output_bfd, error_message);
1560 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1562 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1564 /* Subtract the TOC base address. */
1565 reloc_entry->addend -= TOCstart + TOC_BASE_OFF;
1567 /* Adjust the addend for sign extension of the low 16 bits. */
1568 reloc_entry->addend += 0x8000;
1569 return bfd_reloc_continue;
1572 static bfd_reloc_status_type
1573 ppc64_elf_toc64_reloc (abfd, reloc_entry, symbol, data,
1574 input_section, output_bfd, error_message)
1576 arelent *reloc_entry;
1579 asection *input_section;
1581 char **error_message;
1584 bfd_size_type octets;
1586 /* If this is a relocatable link (output_bfd test tells us), just
1587 call the generic function. Any adjustment will be done at final
1589 if (output_bfd != NULL)
1590 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1591 input_section, output_bfd, error_message);
1593 TOCstart = _bfd_get_gp_value (input_section->output_section->owner);
1595 TOCstart = ppc64_elf_toc (input_section->output_section->owner);
1597 octets = reloc_entry->address * bfd_octets_per_byte (abfd);
1598 bfd_put_64 (abfd, TOCstart + TOC_BASE_OFF, (bfd_byte *) data + octets);
1599 return bfd_reloc_ok;
1602 static bfd_reloc_status_type
1603 ppc64_elf_unhandled_reloc (abfd, reloc_entry, symbol, data,
1604 input_section, output_bfd, error_message)
1606 arelent *reloc_entry;
1609 asection *input_section;
1611 char **error_message;
1613 /* If this is a relocatable link (output_bfd test tells us), just
1614 call the generic function. Any adjustment will be done at final
1616 if (output_bfd != NULL)
1617 return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
1618 input_section, output_bfd, error_message);
1620 if (error_message != NULL)
1622 static char buf[60];
1623 sprintf (buf, "generic linker can't handle %s",
1624 reloc_entry->howto->name);
1625 *error_message = buf;
1627 return bfd_reloc_dangerous;
1630 /* Fix bad default arch selected for a 64 bit input bfd when the
1631 default is 32 bit. */
1634 ppc64_elf_object_p (abfd)
1637 if (abfd->arch_info->the_default && abfd->arch_info->bits_per_word == 32)
1639 Elf_Internal_Ehdr *i_ehdr = elf_elfheader (abfd);
1641 if (i_ehdr->e_ident[EI_CLASS] == ELFCLASS64)
1643 /* Relies on arch after 32 bit default being 64 bit default. */
1644 abfd->arch_info = abfd->arch_info->next;
1645 BFD_ASSERT (abfd->arch_info->bits_per_word == 64);
1651 /* Merge backend specific data from an object file to the output
1652 object file when linking. */
1655 ppc64_elf_merge_private_bfd_data (ibfd, obfd)
1659 /* Check if we have the same endianess. */
1660 if (ibfd->xvec->byteorder != obfd->xvec->byteorder
1661 && obfd->xvec->byteorder != BFD_ENDIAN_UNKNOWN)
1665 if (bfd_big_endian (ibfd))
1666 msg = _("%s: compiled for a big endian system and target is little endian");
1668 msg = _("%s: compiled for a little endian system and target is big endian");
1670 (*_bfd_error_handler) (msg, bfd_archive_filename (ibfd));
1672 bfd_set_error (bfd_error_wrong_format);
1679 /* The following functions are specific to the ELF linker, while
1680 functions above are used generally. Those named ppc64_elf_* are
1681 called by the main ELF linker code. They appear in this file more
1682 or less in the order in which they are called. eg.
1683 ppc64_elf_check_relocs is called early in the link process,
1684 ppc64_elf_finish_dynamic_sections is one of the last functions
1687 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
1688 functions have both a function code symbol and a function descriptor
1689 symbol. A call to foo in a relocatable object file looks like:
1696 The function definition in another object file might be:
1700 . .quad .TOC.@tocbase
1706 When the linker resolves the call during a static link, the branch
1707 unsurprisingly just goes to .foo and the .opd information is unused.
1708 If the function definition is in a shared library, things are a little
1709 different: The call goes via a plt call stub, the opd information gets
1710 copied to the plt, and the linker patches the nop.
1718 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
1719 . addi 12,12,Lfoo@toc@l # is slightly optimised, but
1720 . std 2,40(1) # this is the general idea
1728 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
1730 The "reloc ()" notation is supposed to indicate that the linker emits
1731 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
1734 What are the difficulties here? Well, firstly, the relocations
1735 examined by the linker in check_relocs are against the function code
1736 sym .foo, while the dynamic relocation in the plt is emitted against
1737 the function descriptor symbol, foo. Somewhere along the line, we need
1738 to carefully copy dynamic link information from one symbol to the other.
1739 Secondly, the generic part of the elf linker will make .foo a dynamic
1740 symbol as is normal for most other backends. We need foo dynamic
1741 instead, at least for an application final link. However, when
1742 creating a shared library containing foo, we need to have both symbols
1743 dynamic so that references to .foo are satisfied during the early
1744 stages of linking. Otherwise the linker might decide to pull in a
1745 definition from some other object, eg. a static library. */
1747 /* The linker needs to keep track of the number of relocs that it
1748 decides to copy as dynamic relocs in check_relocs for each symbol.
1749 This is so that it can later discard them if they are found to be
1750 unnecessary. We store the information in a field extending the
1751 regular ELF linker hash table. */
1753 struct ppc_dyn_relocs
1755 struct ppc_dyn_relocs *next;
1757 /* The input section of the reloc. */
1760 /* Total number of relocs copied for the input section. */
1761 bfd_size_type count;
1763 /* Number of pc-relative relocs copied for the input section. */
1764 bfd_size_type pc_count;
1767 /* Of those relocs that might be copied as dynamic relocs, this macro
1768 selects between relative and absolute types. */
1770 #define IS_ABSOLUTE_RELOC(RTYPE) \
1771 ((RTYPE) != R_PPC64_REL32 \
1772 && (RTYPE) != R_PPC64_REL64 \
1773 && (RTYPE) != R_PPC64_ADDR30)
1775 /* Section name for stubs is the associated section name plus this
1777 #define STUB_SUFFIX ".stub"
1780 ppc_stub_long_branch:
1781 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
1782 destination, but a 24 bit branch in a stub section will reach.
1785 ppc_stub_plt_branch:
1786 Similar to the above, but a 24 bit branch in the stub section won't
1787 reach its destination.
1788 . addis %r12,%r2,xxx@ha
1789 . ld %r11,xxx@l(%r12)
1794 Used to call a function in a shared library.
1795 . addis %r12,%r2,xxx@ha
1797 . ld %r11,xxx+0@l(%r12)
1798 . ld %r2,xxx+8@l(%r12)
1800 . ld %r11,xxx+16@l(%r12)
1804 enum ppc_stub_type {
1806 ppc_stub_long_branch,
1807 ppc_stub_plt_branch,
1811 struct ppc_stub_hash_entry {
1813 /* Base hash table entry structure. */
1814 struct bfd_hash_entry root;
1816 /* The stub section. */
1819 /* Offset within stub_sec of the beginning of this stub. */
1820 bfd_vma stub_offset;
1822 /* Given the symbol's value and its section we can determine its final
1823 value when building the stubs (so the stub knows where to jump. */
1824 bfd_vma target_value;
1825 asection *target_section;
1827 enum ppc_stub_type stub_type;
1829 /* The symbol table entry, if any, that this was derived from. */
1830 struct ppc_link_hash_entry *h;
1832 /* Where this stub is being called from, or, in the case of combined
1833 stub sections, the first input section in the group. */
1837 struct ppc_branch_hash_entry {
1839 /* Base hash table entry structure. */
1840 struct bfd_hash_entry root;
1842 /* Offset within .branch_lt. */
1843 unsigned int offset;
1845 /* Generation marker. */
1849 struct ppc_link_hash_entry
1851 struct elf_link_hash_entry elf;
1853 /* A pointer to the most recently used stub hash entry against this
1855 struct ppc_stub_hash_entry *stub_cache;
1857 /* Track dynamic relocs copied for this symbol. */
1858 struct ppc_dyn_relocs *dyn_relocs;
1860 /* Link between function code and descriptor symbols. */
1861 struct elf_link_hash_entry *oh;
1863 /* Flag function code and descriptor symbols. */
1864 unsigned int is_func:1;
1865 unsigned int is_func_descriptor:1;
1866 unsigned int is_entry:1;
1869 /* ppc64 ELF linker hash table. */
1871 struct ppc_link_hash_table
1873 struct elf_link_hash_table elf;
1875 /* The stub hash table. */
1876 struct bfd_hash_table stub_hash_table;
1878 /* Another hash table for plt_branch stubs. */
1879 struct bfd_hash_table branch_hash_table;
1881 /* Linker stub bfd. */
1884 /* Linker call-backs. */
1885 asection * (*add_stub_section) PARAMS ((const char *, asection *));
1886 void (*layout_sections_again) PARAMS ((void));
1888 /* Array to keep track of which stub sections have been created, and
1889 information on stub grouping. */
1891 /* This is the section to which stubs in the group will be attached. */
1893 /* The stub section. */
1897 /* Assorted information used by ppc64_elf_size_stubs. */
1899 asection **input_list;
1901 /* Short-cuts to get to dynamic linker sections. */
1914 unsigned int stub_error;
1916 /* Flag set when small branches are detected. Used to
1917 select suitable defaults for the stub group size. */
1918 unsigned int has_14bit_branch;
1920 /* Set if we detect a reference undefined weak symbol. */
1921 unsigned int have_undefweak;
1923 /* Incremented every time we size stubs. */
1924 unsigned int stub_iteration;
1926 /* Small local sym to section mapping cache. */
1927 struct sym_sec_cache sym_sec;
1930 static struct bfd_hash_entry *stub_hash_newfunc
1931 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1932 static struct bfd_hash_entry *branch_hash_newfunc
1933 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1934 static struct bfd_hash_entry *link_hash_newfunc
1935 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
1936 static struct bfd_link_hash_table *ppc64_elf_link_hash_table_create
1938 static void ppc64_elf_link_hash_table_free
1939 PARAMS ((struct bfd_link_hash_table *));
1940 static char *ppc_stub_name
1941 PARAMS ((const asection *, const asection *,
1942 const struct ppc_link_hash_entry *, const Elf_Internal_Rela *));
1943 static struct ppc_stub_hash_entry *ppc_get_stub_entry
1944 PARAMS ((const asection *, const asection *, struct elf_link_hash_entry *,
1945 const Elf_Internal_Rela *, struct ppc_link_hash_table *));
1946 static struct ppc_stub_hash_entry *ppc_add_stub
1947 PARAMS ((const char *, asection *, struct ppc_link_hash_table *));
1948 static boolean create_linkage_sections
1949 PARAMS ((bfd *, struct bfd_link_info *));
1950 static boolean create_got_section
1951 PARAMS ((bfd *, struct bfd_link_info *));
1952 static boolean ppc64_elf_create_dynamic_sections
1953 PARAMS ((bfd *, struct bfd_link_info *));
1954 static void ppc64_elf_copy_indirect_symbol
1955 PARAMS ((struct elf_backend_data *, struct elf_link_hash_entry *,
1956 struct elf_link_hash_entry *));
1957 static boolean ppc64_elf_check_relocs
1958 PARAMS ((bfd *, struct bfd_link_info *, asection *,
1959 const Elf_Internal_Rela *));
1960 static asection * ppc64_elf_gc_mark_hook
1961 PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
1962 struct elf_link_hash_entry *, Elf_Internal_Sym *));
1963 static boolean ppc64_elf_gc_sweep_hook
1964 PARAMS ((bfd *, struct bfd_link_info *, asection *,
1965 const Elf_Internal_Rela *));
1966 static boolean func_desc_adjust
1967 PARAMS ((struct elf_link_hash_entry *, PTR));
1968 static boolean ppc64_elf_func_desc_adjust
1969 PARAMS ((bfd *, struct bfd_link_info *));
1970 static boolean ppc64_elf_adjust_dynamic_symbol
1971 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
1972 static void ppc64_elf_hide_symbol
1973 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, boolean));
1974 static boolean edit_opd
1975 PARAMS ((bfd *, struct bfd_link_info *));
1976 static boolean allocate_dynrelocs
1977 PARAMS ((struct elf_link_hash_entry *, PTR));
1978 static boolean readonly_dynrelocs
1979 PARAMS ((struct elf_link_hash_entry *, PTR));
1980 static enum elf_reloc_type_class ppc64_elf_reloc_type_class
1981 PARAMS ((const Elf_Internal_Rela *));
1982 static boolean ppc64_elf_size_dynamic_sections
1983 PARAMS ((bfd *, struct bfd_link_info *));
1984 static INLINE enum ppc_stub_type ppc_type_of_stub
1985 PARAMS ((asection *, const Elf_Internal_Rela *,
1986 struct ppc_link_hash_entry **, bfd_vma));
1987 static bfd_byte *build_plt_stub
1988 PARAMS ((bfd *, bfd_byte *, int, int));
1989 static boolean ppc_build_one_stub
1990 PARAMS ((struct bfd_hash_entry *, PTR));
1991 static boolean ppc_size_one_stub
1992 PARAMS ((struct bfd_hash_entry *, PTR));
1993 static void group_sections
1994 PARAMS ((struct ppc_link_hash_table *, bfd_size_type, boolean));
1995 static boolean ppc64_elf_relocate_section
1996 PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *,
1997 Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms,
1999 static boolean ppc64_elf_finish_dynamic_symbol
2000 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
2001 Elf_Internal_Sym *));
2002 static boolean ppc64_elf_finish_dynamic_sections
2003 PARAMS ((bfd *, struct bfd_link_info *));
2005 /* Get the ppc64 ELF linker hash table from a link_info structure. */
2007 #define ppc_hash_table(p) \
2008 ((struct ppc_link_hash_table *) ((p)->hash))
2010 #define ppc_stub_hash_lookup(table, string, create, copy) \
2011 ((struct ppc_stub_hash_entry *) \
2012 bfd_hash_lookup ((table), (string), (create), (copy)))
2014 #define ppc_branch_hash_lookup(table, string, create, copy) \
2015 ((struct ppc_branch_hash_entry *) \
2016 bfd_hash_lookup ((table), (string), (create), (copy)))
2018 /* Create an entry in the stub hash table. */
2020 static struct bfd_hash_entry *
2021 stub_hash_newfunc (entry, table, string)
2022 struct bfd_hash_entry *entry;
2023 struct bfd_hash_table *table;
2026 /* Allocate the structure if it has not already been allocated by a
2030 entry = bfd_hash_allocate (table, sizeof (struct ppc_stub_hash_entry));
2035 /* Call the allocation method of the superclass. */
2036 entry = bfd_hash_newfunc (entry, table, string);
2039 struct ppc_stub_hash_entry *eh;
2041 /* Initialize the local fields. */
2042 eh = (struct ppc_stub_hash_entry *) entry;
2043 eh->stub_sec = NULL;
2044 eh->stub_offset = 0;
2045 eh->target_value = 0;
2046 eh->target_section = NULL;
2047 eh->stub_type = ppc_stub_none;
2055 /* Create an entry in the branch hash table. */
2057 static struct bfd_hash_entry *
2058 branch_hash_newfunc (entry, table, string)
2059 struct bfd_hash_entry *entry;
2060 struct bfd_hash_table *table;
2063 /* Allocate the structure if it has not already been allocated by a
2067 entry = bfd_hash_allocate (table, sizeof (struct ppc_branch_hash_entry));
2072 /* Call the allocation method of the superclass. */
2073 entry = bfd_hash_newfunc (entry, table, string);
2076 struct ppc_branch_hash_entry *eh;
2078 /* Initialize the local fields. */
2079 eh = (struct ppc_branch_hash_entry *) entry;
2087 /* Create an entry in a ppc64 ELF linker hash table. */
2089 static struct bfd_hash_entry *
2090 link_hash_newfunc (entry, table, string)
2091 struct bfd_hash_entry *entry;
2092 struct bfd_hash_table *table;
2095 /* Allocate the structure if it has not already been allocated by a
2099 entry = bfd_hash_allocate (table, sizeof (struct ppc_link_hash_entry));
2104 /* Call the allocation method of the superclass. */
2105 entry = _bfd_elf_link_hash_newfunc (entry, table, string);
2108 struct ppc_link_hash_entry *eh = (struct ppc_link_hash_entry *) entry;
2110 eh->stub_cache = NULL;
2111 eh->dyn_relocs = NULL;
2114 eh->is_func_descriptor = 0;
2121 /* Create a ppc64 ELF linker hash table. */
2123 static struct bfd_link_hash_table *
2124 ppc64_elf_link_hash_table_create (abfd)
2127 struct ppc_link_hash_table *htab;
2128 bfd_size_type amt = sizeof (struct ppc_link_hash_table);
2130 htab = (struct ppc_link_hash_table *) bfd_malloc (amt);
2134 if (! _bfd_elf_link_hash_table_init (&htab->elf, abfd, link_hash_newfunc))
2140 /* Init the stub hash table too. */
2141 if (!bfd_hash_table_init (&htab->stub_hash_table, stub_hash_newfunc))
2144 /* And the branch hash table. */
2145 if (!bfd_hash_table_init (&htab->branch_hash_table, branch_hash_newfunc))
2148 htab->stub_bfd = NULL;
2149 htab->add_stub_section = NULL;
2150 htab->layout_sections_again = NULL;
2151 htab->stub_group = NULL;
2153 htab->srelgot = NULL;
2155 htab->srelplt = NULL;
2156 htab->sdynbss = NULL;
2157 htab->srelbss = NULL;
2158 htab->sglink = NULL;
2161 htab->srelbrlt = NULL;
2162 htab->stub_error = 0;
2163 htab->has_14bit_branch = 0;
2164 htab->have_undefweak = 0;
2165 htab->stub_iteration = 0;
2166 htab->sym_sec.abfd = NULL;
2168 return &htab->elf.root;
2171 /* Free the derived linker hash table. */
2174 ppc64_elf_link_hash_table_free (hash)
2175 struct bfd_link_hash_table *hash;
2177 struct ppc_link_hash_table *ret = (struct ppc_link_hash_table *) hash;
2179 bfd_hash_table_free (&ret->stub_hash_table);
2180 bfd_hash_table_free (&ret->branch_hash_table);
2181 _bfd_generic_link_hash_table_free (hash);
2184 /* Build a name for an entry in the stub hash table. */
2187 ppc_stub_name (input_section, sym_sec, h, rel)
2188 const asection *input_section;
2189 const asection *sym_sec;
2190 const struct ppc_link_hash_entry *h;
2191 const Elf_Internal_Rela *rel;
2196 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
2197 offsets from a sym as a branch target? In fact, we could
2198 probably assume the addend is always zero. */
2199 BFD_ASSERT (((int) rel->r_addend & 0xffffffff) == rel->r_addend);
2203 len = 8 + 1 + strlen (h->elf.root.root.string) + 1 + 8 + 1;
2204 stub_name = bfd_malloc (len);
2205 if (stub_name != NULL)
2207 sprintf (stub_name, "%08x_%s+%x",
2208 input_section->id & 0xffffffff,
2209 h->elf.root.root.string,
2210 (int) rel->r_addend & 0xffffffff);
2215 len = 8 + 1 + 8 + 1 + 8 + 1 + 16 + 1;
2216 stub_name = bfd_malloc (len);
2217 if (stub_name != NULL)
2219 sprintf (stub_name, "%08x_%x:%x+%x",
2220 input_section->id & 0xffffffff,
2221 sym_sec->id & 0xffffffff,
2222 (int) ELF64_R_SYM (rel->r_info) & 0xffffffff,
2223 (int) rel->r_addend & 0xffffffff);
2229 /* Look up an entry in the stub hash. Stub entries are cached because
2230 creating the stub name takes a bit of time. */
2232 static struct ppc_stub_hash_entry *
2233 ppc_get_stub_entry (input_section, sym_sec, hash, rel, htab)
2234 const asection *input_section;
2235 const asection *sym_sec;
2236 struct elf_link_hash_entry *hash;
2237 const Elf_Internal_Rela *rel;
2238 struct ppc_link_hash_table *htab;
2240 struct ppc_stub_hash_entry *stub_entry;
2241 struct ppc_link_hash_entry *h = (struct ppc_link_hash_entry *) hash;
2242 const asection *id_sec;
2244 /* If this input section is part of a group of sections sharing one
2245 stub section, then use the id of the first section in the group.
2246 Stub names need to include a section id, as there may well be
2247 more than one stub used to reach say, printf, and we need to
2248 distinguish between them. */
2249 id_sec = htab->stub_group[input_section->id].link_sec;
2251 if (h != NULL && h->stub_cache != NULL
2252 && h->stub_cache->h == h
2253 && h->stub_cache->id_sec == id_sec)
2255 stub_entry = h->stub_cache;
2261 stub_name = ppc_stub_name (id_sec, sym_sec, h, rel);
2262 if (stub_name == NULL)
2265 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
2266 stub_name, false, false);
2268 h->stub_cache = stub_entry;
2276 /* Add a new stub entry to the stub hash. Not all fields of the new
2277 stub entry are initialised. */
2279 static struct ppc_stub_hash_entry *
2280 ppc_add_stub (stub_name, section, htab)
2281 const char *stub_name;
2283 struct ppc_link_hash_table *htab;
2287 struct ppc_stub_hash_entry *stub_entry;
2289 link_sec = htab->stub_group[section->id].link_sec;
2290 stub_sec = htab->stub_group[section->id].stub_sec;
2291 if (stub_sec == NULL)
2293 stub_sec = htab->stub_group[link_sec->id].stub_sec;
2294 if (stub_sec == NULL)
2300 namelen = strlen (link_sec->name);
2301 len = namelen + sizeof (STUB_SUFFIX);
2302 s_name = bfd_alloc (htab->stub_bfd, len);
2306 memcpy (s_name, link_sec->name, namelen);
2307 memcpy (s_name + namelen, STUB_SUFFIX, sizeof (STUB_SUFFIX));
2308 stub_sec = (*htab->add_stub_section) (s_name, link_sec);
2309 if (stub_sec == NULL)
2311 htab->stub_group[link_sec->id].stub_sec = stub_sec;
2313 htab->stub_group[section->id].stub_sec = stub_sec;
2316 /* Enter this entry into the linker stub hash table. */
2317 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table, stub_name,
2319 if (stub_entry == NULL)
2321 (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
2322 bfd_archive_filename (section->owner),
2327 stub_entry->stub_sec = stub_sec;
2328 stub_entry->stub_offset = 0;
2329 stub_entry->id_sec = link_sec;
2333 /* Create sections for linker generated code. */
2336 create_linkage_sections (dynobj, info)
2338 struct bfd_link_info *info;
2340 struct ppc_link_hash_table *htab;
2343 htab = ppc_hash_table (info);
2345 /* Create .sfpr for code to save and restore fp regs. */
2346 flags = (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_READONLY
2347 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2348 htab->sfpr = bfd_make_section_anyway (dynobj, ".sfpr");
2349 if (htab->sfpr == NULL
2350 || ! bfd_set_section_flags (dynobj, htab->sfpr, flags)
2351 || ! bfd_set_section_alignment (dynobj, htab->sfpr, 2))
2354 /* Create .glink for lazy dynamic linking support. */
2355 htab->sglink = bfd_make_section_anyway (dynobj, ".glink");
2356 if (htab->sglink == NULL
2357 || ! bfd_set_section_flags (dynobj, htab->sglink, flags)
2358 || ! bfd_set_section_alignment (dynobj, htab->sglink, 2))
2361 /* Create .branch_lt for plt_branch stubs. */
2362 flags = (SEC_ALLOC | SEC_LOAD
2363 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2364 htab->sbrlt = bfd_make_section_anyway (dynobj, ".branch_lt");
2365 if (htab->sbrlt == NULL
2366 || ! bfd_set_section_flags (dynobj, htab->sbrlt, flags)
2367 || ! bfd_set_section_alignment (dynobj, htab->sbrlt, 3))
2372 flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY
2373 | SEC_HAS_CONTENTS | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2374 htab->srelbrlt = bfd_make_section_anyway (dynobj, ".rela.branch_lt");
2376 || ! bfd_set_section_flags (dynobj, htab->srelbrlt, flags)
2377 || ! bfd_set_section_alignment (dynobj, htab->srelbrlt, 3))
2383 /* Create .got and .rela.got sections in DYNOBJ, and set up
2384 shortcuts to them in our hash table. */
2387 create_got_section (dynobj, info)
2389 struct bfd_link_info *info;
2391 struct ppc_link_hash_table *htab;
2393 if (! _bfd_elf_create_got_section (dynobj, info))
2396 htab = ppc_hash_table (info);
2397 htab->sgot = bfd_get_section_by_name (dynobj, ".got");
2401 htab->srelgot = bfd_make_section (dynobj, ".rela.got");
2403 || ! bfd_set_section_flags (dynobj, htab->srelgot,
2404 (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS
2405 | SEC_IN_MEMORY | SEC_LINKER_CREATED
2407 || ! bfd_set_section_alignment (dynobj, htab->srelgot, 3))
2412 /* Create the dynamic sections, and set up shortcuts. */
2415 ppc64_elf_create_dynamic_sections (dynobj, info)
2417 struct bfd_link_info *info;
2419 struct ppc_link_hash_table *htab;
2421 htab = ppc_hash_table (info);
2422 if (!htab->sgot && !create_got_section (dynobj, info))
2425 if (!_bfd_elf_create_dynamic_sections (dynobj, info))
2428 htab->splt = bfd_get_section_by_name (dynobj, ".plt");
2429 htab->srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
2430 htab->sdynbss = bfd_get_section_by_name (dynobj, ".dynbss");
2432 htab->srelbss = bfd_get_section_by_name (dynobj, ".rela.bss");
2434 if (!htab->splt || !htab->srelplt || !htab->sdynbss
2435 || (!info->shared && !htab->srelbss))
2441 /* Copy the extra info we tack onto an elf_link_hash_entry. */
2444 ppc64_elf_copy_indirect_symbol (bed, dir, ind)
2445 struct elf_backend_data *bed;
2446 struct elf_link_hash_entry *dir, *ind;
2448 struct ppc_link_hash_entry *edir, *eind;
2450 edir = (struct ppc_link_hash_entry *) dir;
2451 eind = (struct ppc_link_hash_entry *) ind;
2453 if (eind->dyn_relocs != NULL)
2455 if (edir->dyn_relocs != NULL)
2457 struct ppc_dyn_relocs **pp;
2458 struct ppc_dyn_relocs *p;
2460 if (ind->root.type == bfd_link_hash_indirect)
2463 /* Add reloc counts against the weak sym to the strong sym
2464 list. Merge any entries against the same section. */
2465 for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
2467 struct ppc_dyn_relocs *q;
2469 for (q = edir->dyn_relocs; q != NULL; q = q->next)
2470 if (q->sec == p->sec)
2472 q->pc_count += p->pc_count;
2473 q->count += p->count;
2480 *pp = edir->dyn_relocs;
2483 edir->dyn_relocs = eind->dyn_relocs;
2484 eind->dyn_relocs = NULL;
2487 edir->is_func |= eind->is_func;
2488 edir->is_func_descriptor |= eind->is_func_descriptor;
2489 edir->is_entry |= eind->is_entry;
2491 _bfd_elf_link_hash_copy_indirect (bed, dir, ind);
2494 /* Set a flag, used by ppc64_elf_gc_mark_hook, on the entry symbol and
2495 symbols undefined on the command-line. */
2498 ppc64_elf_mark_entry_syms (info)
2499 struct bfd_link_info *info;
2501 struct ppc_link_hash_table *htab;
2502 struct bfd_sym_chain *sym;
2504 htab = ppc_hash_table (info);
2505 for (sym = info->gc_sym_list; sym; sym = sym->next)
2507 struct elf_link_hash_entry *h;
2509 h = elf_link_hash_lookup (&htab->elf, sym->name, false, false, false);
2511 ((struct ppc_link_hash_entry *) h)->is_entry = 1;
2516 /* Look through the relocs for a section during the first phase, and
2517 calculate needed space in the global offset table, procedure
2518 linkage table, and dynamic reloc sections. */
2521 ppc64_elf_check_relocs (abfd, info, sec, relocs)
2523 struct bfd_link_info *info;
2525 const Elf_Internal_Rela *relocs;
2527 struct ppc_link_hash_table *htab;
2528 Elf_Internal_Shdr *symtab_hdr;
2529 struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
2530 const Elf_Internal_Rela *rel;
2531 const Elf_Internal_Rela *rel_end;
2533 asection **opd_sym_map;
2535 if (info->relocateable)
2538 htab = ppc_hash_table (info);
2539 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2541 sym_hashes = elf_sym_hashes (abfd);
2542 sym_hashes_end = (sym_hashes
2543 + symtab_hdr->sh_size / sizeof (Elf64_External_Sym)
2544 - symtab_hdr->sh_info);
2548 if (strcmp (bfd_get_section_name (abfd, sec), ".opd") == 0)
2550 /* Garbage collection needs some extra help with .opd sections.
2551 We don't want to necessarily keep everything referenced by
2552 relocs in .opd, as that would keep all functions. Instead,
2553 if we reference an .opd symbol (a function descriptor), we
2554 want to keep the function code symbol's section. This is
2555 easy for global symbols, but for local syms we need to keep
2556 information about the associated function section. Later, if
2557 edit_opd deletes entries, we'll use this array to adjust
2558 local syms in .opd. */
2560 asection *func_section;
2565 amt = sec->_raw_size * sizeof (union opd_info) / 24;
2566 opd_sym_map = (asection **) bfd_zalloc (abfd, amt);
2567 if (opd_sym_map == NULL)
2569 elf_section_data (sec)->tdata = opd_sym_map;
2572 if (htab->elf.dynobj == NULL)
2573 htab->elf.dynobj = abfd;
2574 if (htab->sfpr == NULL
2575 && !create_linkage_sections (htab->elf.dynobj, info))
2578 rel_end = relocs + sec->reloc_count;
2579 for (rel = relocs; rel < rel_end; rel++)
2581 unsigned long r_symndx;
2582 struct elf_link_hash_entry *h;
2583 enum elf_ppc_reloc_type r_type;
2585 r_symndx = ELF64_R_SYM (rel->r_info);
2586 if (r_symndx < symtab_hdr->sh_info)
2589 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2591 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2594 /* GOT16 relocations */
2596 case R_PPC64_GOT16_DS:
2597 case R_PPC64_GOT16_HA:
2598 case R_PPC64_GOT16_HI:
2599 case R_PPC64_GOT16_LO:
2600 case R_PPC64_GOT16_LO_DS:
2602 /* This symbol requires a global offset table entry. */
2603 if (htab->sgot == NULL
2604 && !create_got_section (htab->elf.dynobj, info))
2609 h->got.refcount += 1;
2613 bfd_signed_vma *local_got_refcounts;
2615 /* This is a global offset table entry for a local symbol. */
2616 local_got_refcounts = elf_local_got_refcounts (abfd);
2617 if (local_got_refcounts == NULL)
2621 size = symtab_hdr->sh_info;
2622 size *= sizeof (bfd_signed_vma);
2623 local_got_refcounts = ((bfd_signed_vma *)
2624 bfd_zalloc (abfd, size));
2625 if (local_got_refcounts == NULL)
2627 elf_local_got_refcounts (abfd) = local_got_refcounts;
2629 local_got_refcounts[r_symndx] += 1;
2633 case R_PPC64_PLT16_HA:
2634 case R_PPC64_PLT16_HI:
2635 case R_PPC64_PLT16_LO:
2638 /* This symbol requires a procedure linkage table entry. We
2639 actually build the entry in adjust_dynamic_symbol,
2640 because this might be a case of linking PIC code without
2641 linking in any dynamic objects, in which case we don't
2642 need to generate a procedure linkage table after all. */
2645 /* It does not make sense to have a procedure linkage
2646 table entry for a local symbol. */
2647 bfd_set_error (bfd_error_bad_value);
2651 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2652 h->plt.refcount += 1;
2653 ((struct ppc_link_hash_entry *) h)->is_func = 1;
2656 /* The following relocations don't need to propagate the
2657 relocation if linking a shared object since they are
2658 section relative. */
2659 case R_PPC64_SECTOFF:
2660 case R_PPC64_SECTOFF_LO:
2661 case R_PPC64_SECTOFF_HI:
2662 case R_PPC64_SECTOFF_HA:
2663 case R_PPC64_SECTOFF_DS:
2664 case R_PPC64_SECTOFF_LO_DS:
2666 case R_PPC64_TOC16_LO:
2667 case R_PPC64_TOC16_HI:
2668 case R_PPC64_TOC16_HA:
2669 case R_PPC64_TOC16_DS:
2670 case R_PPC64_TOC16_LO_DS:
2673 /* This relocation describes the C++ object vtable hierarchy.
2674 Reconstruct it for later use during GC. */
2675 case R_PPC64_GNU_VTINHERIT:
2676 if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2680 /* This relocation describes which C++ vtable entries are actually
2681 used. Record for later use during GC. */
2682 case R_PPC64_GNU_VTENTRY:
2683 if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2688 case R_PPC64_REL14_BRTAKEN:
2689 case R_PPC64_REL14_BRNTAKEN:
2690 htab->has_14bit_branch = 1;
2695 && h->root.root.string[0] == '.'
2696 && h->root.root.string[1] != 0)
2698 /* We may need a .plt entry if the function this reloc
2699 refers to is in a shared lib. */
2700 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
2701 h->plt.refcount += 1;
2702 ((struct ppc_link_hash_entry *) h)->is_func = 1;
2706 case R_PPC64_ADDR64:
2707 if (opd_sym_map != NULL
2709 && h->root.root.string[0] == '.'
2710 && h->root.root.string[1] != 0)
2712 struct elf_link_hash_entry *fdh;
2714 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
2715 false, false, false);
2718 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
2719 ((struct ppc_link_hash_entry *) fdh)->oh = h;
2720 ((struct ppc_link_hash_entry *) h)->is_func = 1;
2721 ((struct ppc_link_hash_entry *) h)->oh = fdh;
2724 if (opd_sym_map != NULL
2726 && rel + 1 < rel_end
2727 && ((enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info)
2732 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, sec,
2737 opd_sym_map[rel->r_offset / 24] = s;
2743 case R_PPC64_ADDR14:
2744 case R_PPC64_ADDR14_BRNTAKEN:
2745 case R_PPC64_ADDR14_BRTAKEN:
2746 case R_PPC64_ADDR16:
2747 case R_PPC64_ADDR16_DS:
2748 case R_PPC64_ADDR16_HA:
2749 case R_PPC64_ADDR16_HI:
2750 case R_PPC64_ADDR16_HIGHER:
2751 case R_PPC64_ADDR16_HIGHERA:
2752 case R_PPC64_ADDR16_HIGHEST:
2753 case R_PPC64_ADDR16_HIGHESTA:
2754 case R_PPC64_ADDR16_LO:
2755 case R_PPC64_ADDR16_LO_DS:
2756 case R_PPC64_ADDR24:
2757 case R_PPC64_ADDR30:
2758 case R_PPC64_ADDR32:
2759 case R_PPC64_UADDR16:
2760 case R_PPC64_UADDR32:
2761 case R_PPC64_UADDR64:
2763 /* Don't propagate .opd relocs. */
2764 if (NO_OPD_RELOCS && opd_sym_map != NULL)
2767 /* If we are creating a shared library, and this is a reloc
2768 against a global symbol, or a non PC relative reloc
2769 against a local symbol, then we need to copy the reloc
2770 into the shared library. However, if we are linking with
2771 -Bsymbolic, we do not need to copy a reloc against a
2772 global symbol which is defined in an object we are
2773 including in the link (i.e., DEF_REGULAR is set). At
2774 this point we have not seen all the input files, so it is
2775 possible that DEF_REGULAR is not set now but will be set
2776 later (it is never cleared). In case of a weak definition,
2777 DEF_REGULAR may be cleared later by a strong definition in
2778 a shared library. We account for that possibility below by
2779 storing information in the relocs_copied field of the hash
2780 table entry. A similar situation occurs when creating
2781 shared libraries and symbol visibility changes render the
2784 If on the other hand, we are creating an executable, we
2785 may need to keep relocations for symbols satisfied by a
2786 dynamic library if we manage to avoid copy relocs for the
2789 && (sec->flags & SEC_ALLOC) != 0
2790 && (IS_ABSOLUTE_RELOC (r_type)
2792 && (! info->symbolic
2793 || h->root.type == bfd_link_hash_defweak
2794 || (h->elf_link_hash_flags
2795 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
2797 && (sec->flags & SEC_ALLOC) != 0
2799 && (h->root.type == bfd_link_hash_defweak
2800 || (h->elf_link_hash_flags
2801 & ELF_LINK_HASH_DEF_REGULAR) == 0)))
2803 struct ppc_dyn_relocs *p;
2804 struct ppc_dyn_relocs **head;
2806 /* We must copy these reloc types into the output file.
2807 Create a reloc section in dynobj and make room for
2814 name = (bfd_elf_string_from_elf_section
2816 elf_elfheader (abfd)->e_shstrndx,
2817 elf_section_data (sec)->rel_hdr.sh_name));
2821 if (strncmp (name, ".rela", 5) != 0
2822 || strcmp (bfd_get_section_name (abfd, sec),
2825 (*_bfd_error_handler)
2826 (_("%s: bad relocation section name `%s\'"),
2827 bfd_archive_filename (abfd), name);
2828 bfd_set_error (bfd_error_bad_value);
2831 dynobj = htab->elf.dynobj;
2832 sreloc = bfd_get_section_by_name (dynobj, name);
2837 sreloc = bfd_make_section (dynobj, name);
2838 flags = (SEC_HAS_CONTENTS | SEC_READONLY
2839 | SEC_IN_MEMORY | SEC_LINKER_CREATED);
2840 if ((sec->flags & SEC_ALLOC) != 0)
2841 flags |= SEC_ALLOC | SEC_LOAD;
2843 || ! bfd_set_section_flags (dynobj, sreloc, flags)
2844 || ! bfd_set_section_alignment (dynobj, sreloc, 3))
2847 elf_section_data (sec)->sreloc = sreloc;
2850 /* If this is a global symbol, we count the number of
2851 relocations we need for this symbol. */
2854 head = &((struct ppc_link_hash_entry *) h)->dyn_relocs;
2858 /* Track dynamic relocs needed for local syms too.
2859 We really need local syms available to do this
2863 s = bfd_section_from_r_symndx (abfd, &htab->sym_sec,
2868 head = ((struct ppc_dyn_relocs **)
2869 &elf_section_data (s)->local_dynrel);
2873 if (p == NULL || p->sec != sec)
2875 p = ((struct ppc_dyn_relocs *)
2876 bfd_alloc (htab->elf.dynobj,
2877 (bfd_size_type) sizeof *p));
2888 if (!IS_ABSOLUTE_RELOC (r_type))
2901 /* Return the section that should be marked against GC for a given
2905 ppc64_elf_gc_mark_hook (sec, info, rel, h, sym)
2907 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2908 Elf_Internal_Rela *rel;
2909 struct elf_link_hash_entry *h;
2910 Elf_Internal_Sym *sym;
2912 asection *rsec = NULL;
2916 enum elf_ppc_reloc_type r_type;
2917 struct ppc_link_hash_entry *fdh;
2919 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
2922 case R_PPC64_GNU_VTINHERIT:
2923 case R_PPC64_GNU_VTENTRY:
2927 switch (h->root.type)
2929 case bfd_link_hash_defined:
2930 case bfd_link_hash_defweak:
2931 fdh = (struct ppc_link_hash_entry *) h;
2933 /* Function descriptor syms cause the associated
2934 function code sym section to be marked. */
2935 if (fdh->is_func_descriptor)
2936 rsec = fdh->oh->root.u.def.section;
2938 /* Function entry syms return NULL if they are in .opd
2939 and are not ._start (or others undefined on the ld
2940 command line). Thus we avoid marking all function
2941 sections, as all functions are referenced in .opd. */
2942 else if ((fdh->oh != NULL
2943 && ((struct ppc_link_hash_entry *) fdh->oh)->is_entry)
2944 || elf_section_data (sec)->tdata == NULL)
2945 rsec = h->root.u.def.section;
2948 case bfd_link_hash_common:
2949 rsec = h->root.u.c.p->section;
2959 asection **opd_sym_section;
2961 rsec = bfd_section_from_elf_index (sec->owner, sym->st_shndx);
2962 opd_sym_section = (asection **) elf_section_data (rsec)->tdata;
2963 if (opd_sym_section != NULL)
2964 rsec = opd_sym_section[sym->st_value / 24];
2965 else if (elf_section_data (sec)->tdata != NULL)
2972 /* Update the .got, .plt. and dynamic reloc reference counts for the
2973 section being removed. */
2976 ppc64_elf_gc_sweep_hook (abfd, info, sec, relocs)
2978 struct bfd_link_info *info ATTRIBUTE_UNUSED;
2980 const Elf_Internal_Rela *relocs;
2982 Elf_Internal_Shdr *symtab_hdr;
2983 struct elf_link_hash_entry **sym_hashes;
2984 bfd_signed_vma *local_got_refcounts;
2985 const Elf_Internal_Rela *rel, *relend;
2987 elf_section_data (sec)->local_dynrel = NULL;
2989 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2990 sym_hashes = elf_sym_hashes (abfd);
2991 local_got_refcounts = elf_local_got_refcounts (abfd);
2993 relend = relocs + sec->reloc_count;
2994 for (rel = relocs; rel < relend; rel++)
2996 unsigned long r_symndx;
2997 enum elf_ppc_reloc_type r_type;
2998 struct elf_link_hash_entry *h;
3000 r_symndx = ELF64_R_SYM (rel->r_info);
3001 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3005 case R_PPC64_GOT16_DS:
3006 case R_PPC64_GOT16_HA:
3007 case R_PPC64_GOT16_HI:
3008 case R_PPC64_GOT16_LO:
3009 case R_PPC64_GOT16_LO_DS:
3010 if (r_symndx >= symtab_hdr->sh_info)
3012 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3013 if (h->got.refcount > 0)
3018 if (local_got_refcounts[r_symndx] > 0)
3019 local_got_refcounts[r_symndx]--;
3023 case R_PPC64_PLT16_HA:
3024 case R_PPC64_PLT16_HI:
3025 case R_PPC64_PLT16_LO:
3028 if (r_symndx >= symtab_hdr->sh_info)
3030 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3031 if (h->plt.refcount > 0)
3037 case R_PPC64_REL14_BRNTAKEN:
3038 case R_PPC64_REL14_BRTAKEN:
3040 if (r_symndx >= symtab_hdr->sh_info)
3042 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3043 if (h->plt.refcount > 0)
3050 if (r_symndx >= symtab_hdr->sh_info)
3052 struct ppc_link_hash_entry *eh;
3053 struct ppc_dyn_relocs **pp;
3054 struct ppc_dyn_relocs *p;
3056 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3057 eh = (struct ppc_link_hash_entry *) h;
3059 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3071 case R_PPC64_ADDR14:
3072 case R_PPC64_ADDR14_BRNTAKEN:
3073 case R_PPC64_ADDR14_BRTAKEN:
3074 case R_PPC64_ADDR16:
3075 case R_PPC64_ADDR16_DS:
3076 case R_PPC64_ADDR16_HA:
3077 case R_PPC64_ADDR16_HI:
3078 case R_PPC64_ADDR16_HIGHER:
3079 case R_PPC64_ADDR16_HIGHERA:
3080 case R_PPC64_ADDR16_HIGHEST:
3081 case R_PPC64_ADDR16_HIGHESTA:
3082 case R_PPC64_ADDR16_LO:
3083 case R_PPC64_ADDR16_LO_DS:
3084 case R_PPC64_ADDR24:
3085 case R_PPC64_ADDR30:
3086 case R_PPC64_ADDR32:
3087 case R_PPC64_ADDR64:
3088 case R_PPC64_UADDR16:
3089 case R_PPC64_UADDR32:
3090 case R_PPC64_UADDR64:
3092 if (r_symndx >= symtab_hdr->sh_info)
3094 struct ppc_link_hash_entry *eh;
3095 struct ppc_dyn_relocs **pp;
3096 struct ppc_dyn_relocs *p;
3098 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3099 eh = (struct ppc_link_hash_entry *) h;
3101 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
3119 /* Called via elf_link_hash_traverse to transfer dynamic linking
3120 information on function code symbol entries to their corresponding
3121 function descriptor symbol entries. */
3123 func_desc_adjust (h, inf)
3124 struct elf_link_hash_entry *h;
3127 struct bfd_link_info *info;
3128 struct ppc_link_hash_table *htab;
3130 if (h->root.type == bfd_link_hash_indirect)
3133 if (h->root.type == bfd_link_hash_warning)
3134 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3136 info = (struct bfd_link_info *) inf;
3137 htab = ppc_hash_table (info);
3139 /* If this is a function code symbol, transfer dynamic linking
3140 information to the function descriptor symbol. */
3141 if (!((struct ppc_link_hash_entry *) h)->is_func)
3144 if (h->root.type == bfd_link_hash_undefweak
3145 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR))
3146 htab->have_undefweak = true;
3148 if (h->plt.refcount > 0
3149 && h->root.root.string[0] == '.'
3150 && h->root.root.string[1] != '\0')
3152 struct elf_link_hash_entry *fdh = ((struct ppc_link_hash_entry *) h)->oh;
3153 boolean force_local;
3155 /* Find the corresponding function descriptor symbol. Create it
3156 as undefined if necessary. */
3159 fdh = elf_link_hash_lookup (&htab->elf, h->root.root.string + 1,
3160 false, false, true);
3164 && (h->root.type == bfd_link_hash_undefined
3165 || h->root.type == bfd_link_hash_undefweak))
3170 abfd = h->root.u.undef.abfd;
3171 newsym = bfd_make_empty_symbol (abfd);
3172 newsym->name = h->root.root.string + 1;
3173 newsym->section = bfd_und_section_ptr;
3175 newsym->flags = BSF_OBJECT;
3176 if (h->root.type == bfd_link_hash_undefweak)
3177 newsym->flags |= BSF_WEAK;
3179 if ( !(_bfd_generic_link_add_one_symbol
3180 (info, abfd, newsym->name, newsym->flags,
3181 newsym->section, newsym->value, NULL, false, false,
3182 (struct bfd_link_hash_entry **) &fdh)))
3186 fdh->elf_link_hash_flags &= ~ELF_LINK_NON_ELF;
3190 && (fdh->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
3192 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3193 || (fdh->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0))
3195 if (fdh->dynindx == -1)
3196 if (! bfd_elf64_link_record_dynamic_symbol (info, fdh))
3198 fdh->elf_link_hash_flags |= (h->elf_link_hash_flags
3199 & (ELF_LINK_HASH_REF_REGULAR
3200 | ELF_LINK_HASH_REF_DYNAMIC
3201 | ELF_LINK_HASH_REF_REGULAR_NONWEAK
3202 | ELF_LINK_NON_GOT_REF));
3203 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3205 fdh->plt.refcount = h->plt.refcount;
3206 fdh->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
3208 ((struct ppc_link_hash_entry *) fdh)->is_func_descriptor = 1;
3209 ((struct ppc_link_hash_entry *) fdh)->oh = h;
3210 ((struct ppc_link_hash_entry *) h)->oh = fdh;
3213 /* Now that the info is on the function descriptor, clear the
3214 function code sym info. Any function code syms for which we
3215 don't have a definition in a regular file, we force local.
3216 This prevents a shared library from exporting syms that have
3217 been imported from another library. Function code syms that
3218 are really in the library we must leave global to prevent the
3219 linker dragging in a definition from a static library. */
3220 force_local = (info->shared
3221 && ((h->elf_link_hash_flags
3222 & ELF_LINK_HASH_DEF_REGULAR) == 0
3224 || (fdh->elf_link_hash_flags
3225 & ELF_LINK_HASH_DEF_REGULAR) == 0
3226 || (fdh->elf_link_hash_flags
3227 & ELF_LINK_FORCED_LOCAL) != 0));
3228 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3234 #define MIN_SAVE_FPR 14
3235 #define MAX_SAVE_FPR 31
3237 /* Called near the start of bfd_elf_size_dynamic_sections. We use
3238 this hook to a) provide some gcc support functions, and b) transfer
3239 dynamic linking information gathered so far on function code symbol
3240 entries, to their corresponding function descriptor symbol entries. */
3242 ppc64_elf_func_desc_adjust (obfd, info)
3243 bfd *obfd ATTRIBUTE_UNUSED;
3244 struct bfd_link_info *info;
3246 struct ppc_link_hash_table *htab;
3247 unsigned int lowest_savef = MAX_SAVE_FPR + 2;
3248 unsigned int lowest_restf = MAX_SAVE_FPR + 2;
3250 struct elf_link_hash_entry *h;
3254 htab = ppc_hash_table (info);
3256 if (htab->sfpr == NULL)
3257 /* We don't have any relocs. */
3260 /* First provide any missing ._savef* and ._restf* functions. */
3261 memcpy (sym, "._savef14", 10);
3262 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3264 sym[7] = i / 10 + '0';
3265 sym[8] = i % 10 + '0';
3266 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3268 && h->root.type == bfd_link_hash_undefined)
3270 if (lowest_savef > i)
3272 h->root.type = bfd_link_hash_defined;
3273 h->root.u.def.section = htab->sfpr;
3274 h->root.u.def.value = (i - lowest_savef) * 4;
3276 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3277 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3281 memcpy (sym, "._restf14", 10);
3282 for (i = MIN_SAVE_FPR; i <= MAX_SAVE_FPR; i++)
3284 sym[7] = i / 10 + '0';
3285 sym[8] = i % 10 + '0';
3286 h = elf_link_hash_lookup (&htab->elf, sym, false, false, true);
3288 && h->root.type == bfd_link_hash_undefined)
3290 if (lowest_restf > i)
3292 h->root.type = bfd_link_hash_defined;
3293 h->root.u.def.section = htab->sfpr;
3294 h->root.u.def.value = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3295 + (i - lowest_restf) * 4);
3297 h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
3298 _bfd_elf_link_hash_hide_symbol (info, h, info->shared);
3302 elf_link_hash_traverse (&htab->elf, func_desc_adjust, (PTR) info);
3304 htab->sfpr->_raw_size = ((MAX_SAVE_FPR + 2 - lowest_savef) * 4
3305 + (MAX_SAVE_FPR + 2 - lowest_restf) * 4);
3307 if (htab->sfpr->_raw_size == 0)
3309 if (!htab->have_undefweak)
3311 _bfd_strip_section_from_output (info, htab->sfpr);
3315 htab->sfpr->_raw_size = 4;
3318 p = (bfd_byte *) bfd_alloc (htab->elf.dynobj, htab->sfpr->_raw_size);
3321 htab->sfpr->contents = p;
3323 for (i = lowest_savef; i <= MAX_SAVE_FPR; i++)
3325 unsigned int fpr = i << 21;
3326 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3327 bfd_put_32 (htab->elf.dynobj, STFD_FR0_0R1 + fpr + stackoff, p);
3330 if (lowest_savef <= MAX_SAVE_FPR)
3332 bfd_put_32 (htab->elf.dynobj, BLR, p);
3336 for (i = lowest_restf; i <= MAX_SAVE_FPR; i++)
3338 unsigned int fpr = i << 21;
3339 unsigned int stackoff = (1 << 16) - (MAX_SAVE_FPR + 1 - i) * 8;
3340 bfd_put_32 (htab->elf.dynobj, LFD_FR0_0R1 + fpr + stackoff, p);
3343 if (lowest_restf <= MAX_SAVE_FPR
3344 || htab->sfpr->_raw_size == 4)
3346 bfd_put_32 (htab->elf.dynobj, BLR, p);
3352 /* Adjust a symbol defined by a dynamic object and referenced by a
3353 regular object. The current definition is in some section of the
3354 dynamic object, but we're not including those sections. We have to
3355 change the definition to something the rest of the link can
3359 ppc64_elf_adjust_dynamic_symbol (info, h)
3360 struct bfd_link_info *info;
3361 struct elf_link_hash_entry *h;
3363 struct ppc_link_hash_table *htab;
3364 struct ppc_link_hash_entry * eh;
3365 struct ppc_dyn_relocs *p;
3367 unsigned int power_of_two;
3369 htab = ppc_hash_table (info);
3371 /* Deal with function syms. */
3372 if (h->type == STT_FUNC
3373 || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
3375 /* Clear procedure linkage table information for any symbol that
3376 won't need a .plt entry. */
3377 if (!((struct ppc_link_hash_entry *) h)->is_func_descriptor
3378 || h->plt.refcount <= 0
3379 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3381 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) == 0
3382 && (h->elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) == 0))
3384 h->plt.offset = (bfd_vma) -1;
3385 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3390 h->plt.offset = (bfd_vma) -1;
3392 /* If this is a weak symbol, and there is a real definition, the
3393 processor independent code will have arranged for us to see the
3394 real definition first, and we can just use the same value. */
3395 if (h->weakdef != NULL)
3397 BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
3398 || h->weakdef->root.type == bfd_link_hash_defweak);
3399 h->root.u.def.section = h->weakdef->root.u.def.section;
3400 h->root.u.def.value = h->weakdef->root.u.def.value;
3404 /* This is a reference to a symbol defined by a dynamic object which
3405 is not a function. */
3407 /* If we are creating a shared library, we must presume that the
3408 only references to the symbol are via the global offset table.
3409 For such cases we need not do anything here; the relocations will
3410 be handled correctly by relocate_section. */
3414 /* If there are no references to this symbol that do not use the
3415 GOT, we don't need to generate a copy reloc. */
3416 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
3419 eh = (struct ppc_link_hash_entry *) h;
3420 for (p = eh->dyn_relocs; p != NULL; p = p->next)
3422 s = p->sec->output_section;
3423 if (s != NULL && (s->flags & SEC_READONLY) != 0)
3427 /* If we didn't find any dynamic relocs in read-only sections, then
3428 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
3431 h->elf_link_hash_flags &= ~ELF_LINK_NON_GOT_REF;
3435 /* We must allocate the symbol in our .dynbss section, which will
3436 become part of the .bss section of the executable. There will be
3437 an entry for this symbol in the .dynsym section. The dynamic
3438 object will contain position independent code, so all references
3439 from the dynamic object to this symbol will go through the global
3440 offset table. The dynamic linker will use the .dynsym entry to
3441 determine the address it must put in the global offset table, so
3442 both the dynamic object and the regular object will refer to the
3443 same memory location for the variable. */
3445 /* We must generate a R_PPC_COPY reloc to tell the dynamic linker to
3446 copy the initial value out of the dynamic object and into the
3447 runtime process image. We need to remember the offset into the
3448 .rela.bss section we are going to use. */
3449 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3451 htab->srelbss->_raw_size += sizeof (Elf64_External_Rela);
3452 h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
3455 /* We need to figure out the alignment required for this symbol. I
3456 have no idea how ELF linkers handle this. */
3457 power_of_two = bfd_log2 (h->size);
3458 if (power_of_two > 4)
3461 /* Apply the required alignment. */
3463 s->_raw_size = BFD_ALIGN (s->_raw_size, (bfd_size_type) (1 << power_of_two));
3464 if (power_of_two > bfd_get_section_alignment (htab->elf.dynobj, s))
3466 if (! bfd_set_section_alignment (htab->elf.dynobj, s, power_of_two))
3470 /* Define the symbol as being at this point in the section. */
3471 h->root.u.def.section = s;
3472 h->root.u.def.value = s->_raw_size;
3474 /* Increment the section size to make room for the symbol. */
3475 s->_raw_size += h->size;
3480 /* If given a function descriptor symbol, hide both the function code
3481 sym and the descriptor. */
3483 ppc64_elf_hide_symbol (info, h, force_local)
3484 struct bfd_link_info *info;
3485 struct elf_link_hash_entry *h;
3486 boolean force_local;
3488 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
3490 if (((struct ppc_link_hash_entry *) h)->is_func_descriptor)
3492 struct elf_link_hash_entry *fh = ((struct ppc_link_hash_entry *) h)->oh;
3497 struct ppc_link_hash_table *htab;
3500 /* We aren't supposed to use alloca in BFD because on
3501 systems which do not have alloca the version in libiberty
3502 calls xmalloc, which might cause the program to crash
3503 when it runs out of memory. This function doesn't have a
3504 return status, so there's no way to gracefully return an
3505 error. So cheat. We know that string[-1] can be safely
3506 dereferenced; It's either a string in an ELF string
3507 table, or allocated in an objalloc structure. */
3509 p = h->root.root.string - 1;
3512 htab = ppc_hash_table (info);
3513 fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
3516 /* Unfortunately, if it so happens that the string we were
3517 looking for was allocated immediately before this string,
3518 then we overwrote the string terminator. That's the only
3519 reason the lookup should fail. */
3522 q = h->root.root.string + strlen (h->root.root.string);
3523 while (q >= h->root.root.string && *q == *p)
3525 if (q < h->root.root.string && *p == '.')
3526 fh = elf_link_hash_lookup (&htab->elf, p, false, false, false);
3530 ((struct ppc_link_hash_entry *) h)->oh = fh;
3531 ((struct ppc_link_hash_entry *) fh)->oh = h;
3535 _bfd_elf_link_hash_hide_symbol (info, fh, force_local);
3540 edit_opd (obfd, info)
3542 struct bfd_link_info *info;
3545 unsigned int bfd_indx;
3547 for (bfd_indx = 0, ibfd = info->input_bfds;
3549 ibfd = ibfd->link_next, bfd_indx++)
3552 Elf_Internal_Rela *relstart, *rel, *relend;
3553 Elf_Internal_Shdr *symtab_hdr;
3554 Elf_Internal_Sym *local_syms;
3555 struct elf_link_hash_entry **sym_hashes;
3560 sec = bfd_get_section_by_name (ibfd, ".opd");
3564 adjust = (long *) elf_section_data (sec)->tdata;
3565 BFD_ASSERT (adjust != NULL);
3566 memset (adjust, 0, (size_t) sec->_raw_size * sizeof (long) / 24);
3568 if (sec->output_section == bfd_abs_section_ptr)
3571 /* Look through the section relocs. */
3572 if ((sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0)
3576 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
3577 sym_hashes = elf_sym_hashes (ibfd);
3579 /* Read the relocations. */
3580 relstart = _bfd_elf64_link_read_relocs (obfd, sec, (PTR) NULL,
3581 (Elf_Internal_Rela *) NULL,
3583 if (relstart == NULL)
3586 /* First run through the relocs to check they are sane, and to
3587 determine whether we need to edit this opd section. */
3590 relend = relstart + sec->reloc_count;
3591 for (rel = relstart; rel < relend; rel++)
3593 enum elf_ppc_reloc_type r_type;
3594 unsigned long r_symndx;
3596 struct elf_link_hash_entry *h;
3597 Elf_Internal_Sym *sym;
3599 /* .opd contains a regular array of 24 byte entries. We're
3600 only interested in the reloc pointing to a function entry
3602 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
3603 if (r_type == R_PPC64_TOC)
3606 if (r_type != R_PPC64_ADDR64)
3608 (*_bfd_error_handler)
3609 (_("%s: unexpected reloc type %u in .opd section"),
3610 bfd_archive_filename (ibfd), r_type);
3615 if (rel + 1 >= relend)
3617 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE ((rel + 1)->r_info);
3618 if (r_type != R_PPC64_TOC)
3621 if (rel->r_offset != offset)
3623 /* If someone messes with .opd alignment then after a
3624 "ld -r" we might have padding in the middle of .opd.
3625 Also, there's nothing to prevent someone putting
3626 something silly in .opd with the assembler. No .opd
3627 optimization for them! */
3628 (*_bfd_error_handler)
3629 (_("%s: .opd is not a regular array of opd entries"),
3630 bfd_archive_filename (ibfd));
3635 r_symndx = ELF64_R_SYM (rel->r_info);
3639 if (r_symndx >= symtab_hdr->sh_info)
3641 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3642 while (h->root.type == bfd_link_hash_indirect
3643 || h->root.type == bfd_link_hash_warning)
3644 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3645 if (h->root.type == bfd_link_hash_defined
3646 || h->root.type == bfd_link_hash_defweak)
3647 sym_sec = h->root.u.def.section;
3651 if (local_syms == NULL)
3653 local_syms = (Elf_Internal_Sym *) symtab_hdr->contents;
3654 if (local_syms == NULL)
3655 local_syms = bfd_elf_get_elf_syms (ibfd, symtab_hdr,
3656 symtab_hdr->sh_info, 0,
3658 if (local_syms == NULL)
3659 goto error_free_rel;
3661 sym = local_syms + r_symndx;
3662 if ((sym->st_shndx != SHN_UNDEF
3663 && sym->st_shndx < SHN_LORESERVE)
3664 || sym->st_shndx > SHN_HIRESERVE)
3665 sym_sec = bfd_section_from_elf_index (ibfd, sym->st_shndx);
3668 if (sym_sec == NULL || sym_sec->owner == NULL)
3670 (*_bfd_error_handler)
3671 (_("%s: undefined sym `%s' in .opd section"),
3672 bfd_archive_filename (ibfd),
3673 h != NULL ? h->root.root.string : "<local symbol>");
3678 if (sym_sec->output_section == bfd_abs_section_ptr)
3680 /* OK, we've found a function that's excluded from the
3690 Elf_Internal_Rela *write_rel;
3691 bfd_byte *rptr, *wptr;
3694 /* This seems a waste of time as input .opd sections are all
3695 zeros as generated by gcc, but I suppose there's no reason
3696 this will always be so. We might start putting something in
3697 the third word of .opd entries. */
3698 if ((sec->flags & SEC_IN_MEMORY) == 0)
3700 bfd_byte *loc = bfd_alloc (ibfd, sec->_raw_size);
3702 || !bfd_get_section_contents (ibfd, sec, loc, (bfd_vma) 0,
3705 if (local_syms != NULL
3706 && symtab_hdr->contents != (unsigned char *) local_syms)
3709 if (elf_section_data (sec)->relocs != relstart)
3713 sec->contents = loc;
3714 sec->flags |= (SEC_IN_MEMORY | SEC_HAS_CONTENTS);
3717 elf_section_data (sec)->relocs = relstart;
3719 wptr = sec->contents;
3720 rptr = sec->contents;
3721 write_rel = relstart;
3724 for (rel = relstart; rel < relend; rel++)
3726 if (rel->r_offset == offset)
3728 unsigned long r_symndx;
3730 struct elf_link_hash_entry *h;
3731 Elf_Internal_Sym *sym;
3733 r_symndx = ELF64_R_SYM (rel->r_info);
3737 if (r_symndx >= symtab_hdr->sh_info)
3739 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3740 while (h->root.type == bfd_link_hash_indirect
3741 || h->root.type == bfd_link_hash_warning)
3742 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3743 if (h->root.type == bfd_link_hash_defined
3744 || h->root.type == bfd_link_hash_defweak)
3745 sym_sec = h->root.u.def.section;
3749 sym = local_syms + r_symndx;
3750 if ((sym->st_shndx != SHN_UNDEF
3751 && sym->st_shndx < SHN_LORESERVE)
3752 || sym->st_shndx > SHN_HIRESERVE)
3753 sym_sec = bfd_section_from_elf_index (ibfd,
3757 skip = sym_sec->output_section == bfd_abs_section_ptr;
3762 /* Arrange for the function descriptor sym
3764 struct elf_link_hash_entry *fdh;
3765 struct ppc_link_hash_entry *fh;
3767 fh = (struct ppc_link_hash_entry *) h;
3768 BFD_ASSERT (fh->is_func);
3770 fdh->root.u.def.value = 0;
3771 fdh->root.u.def.section = sym_sec;
3776 /* We'll be keeping this opd entry. */
3780 /* Redefine the function descriptor symbol
3781 to this location in the opd section.
3782 We've checked above that opd relocs are
3784 struct elf_link_hash_entry *fdh;
3785 struct ppc_link_hash_entry *fh;
3787 fh = (struct ppc_link_hash_entry *) h;
3788 BFD_ASSERT (fh->is_func);
3790 fdh->root.u.def.value = wptr - sec->contents;
3794 /* Local syms are a bit tricky. We could
3795 tweak them as they can be cached, but
3796 we'd need to look through the local syms
3797 for the function descriptor sym which we
3798 don't have at the moment. So keep an
3799 array of adjustments. */
3800 adjust[(rel->r_offset + wptr - rptr) / 24]
3805 memcpy (wptr, rptr, 24);
3812 /* We need to adjust any reloc offsets to point to the
3813 new opd entries. While we're at it, we may as well
3814 remove redundant relocs. */
3817 rel->r_offset += wptr - rptr;
3818 if (write_rel != rel)
3819 memcpy (write_rel, rel, sizeof (*rel));
3824 sec->_cooked_size = wptr - sec->contents;
3825 sec->reloc_count = write_rel - relstart;
3827 else if (elf_section_data (sec)->relocs != relstart)
3830 if (local_syms != NULL
3831 && symtab_hdr->contents != (unsigned char *) local_syms)
3833 if (!info->keep_memory)
3836 symtab_hdr->contents = (unsigned char *) local_syms;
3843 /* This is the condition under which ppc64_elf_finish_dynamic_symbol
3844 will be called from elflink.h. If elflink.h doesn't call our
3845 finish_dynamic_symbol routine, we'll need to do something about
3846 initializing any .plt and .got entries in ppc64_elf_relocate_section. */
3847 #define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
3849 && ((INFO)->shared \
3850 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
3851 && ((H)->dynindx != -1 \
3852 || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
3854 /* Allocate space in .plt, .got and associated reloc sections for
3858 allocate_dynrelocs (h, inf)
3859 struct elf_link_hash_entry *h;
3862 struct bfd_link_info *info;
3863 struct ppc_link_hash_table *htab;
3865 struct ppc_link_hash_entry *eh;
3866 struct ppc_dyn_relocs *p;
3868 if (h->root.type == bfd_link_hash_indirect)
3871 if (h->root.type == bfd_link_hash_warning)
3872 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3874 info = (struct bfd_link_info *) inf;
3875 htab = ppc_hash_table (info);
3877 if (htab->elf.dynamic_sections_created
3878 && h->plt.refcount > 0
3879 && h->dynindx != -1)
3881 BFD_ASSERT (((struct ppc_link_hash_entry *) h)->is_func_descriptor);
3883 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
3885 /* If this is the first .plt entry, make room for the special
3888 if (s->_raw_size == 0)
3889 s->_raw_size += PLT_INITIAL_ENTRY_SIZE;
3891 h->plt.offset = s->_raw_size;
3893 /* Make room for this entry. */
3894 s->_raw_size += PLT_ENTRY_SIZE;
3896 /* Make room for the .glink code. */
3898 if (s->_raw_size == 0)
3899 s->_raw_size += GLINK_CALL_STUB_SIZE;
3900 /* We need bigger stubs past index 32767. */
3901 if (s->_raw_size >= GLINK_CALL_STUB_SIZE + 32768*2*4)
3903 s->_raw_size += 2*4;
3905 /* We also need to make an entry in the .rela.plt section. */
3907 s->_raw_size += sizeof (Elf64_External_Rela);
3911 h->plt.offset = (bfd_vma) -1;
3912 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3917 h->plt.offset = (bfd_vma) -1;
3918 h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
3921 if (h->got.refcount > 0)
3925 /* Make sure this symbol is output as a dynamic symbol.
3926 Undefined weak syms won't yet be marked as dynamic. */
3927 if (h->dynindx == -1
3928 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3930 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
3935 h->got.offset = s->_raw_size;
3937 dyn = htab->elf.dynamic_sections_created;
3938 if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
3939 htab->srelgot->_raw_size += sizeof (Elf64_External_Rela);
3942 h->got.offset = (bfd_vma) -1;
3944 eh = (struct ppc_link_hash_entry *) h;
3945 if (eh->dyn_relocs == NULL)
3948 /* In the shared -Bsymbolic case, discard space allocated for
3949 dynamic pc-relative relocs against symbols which turn out to be
3950 defined in regular objects. For the normal shared case, discard
3951 space for relocs that have become local due to symbol visibility
3956 if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
3957 && ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
3960 struct ppc_dyn_relocs **pp;
3962 for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
3964 p->count -= p->pc_count;
3975 /* For the non-shared case, discard space for relocs against
3976 symbols which turn out to need copy relocs or are not
3979 if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
3980 && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
3981 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
3982 || (htab->elf.dynamic_sections_created
3983 && (h->root.type == bfd_link_hash_undefweak
3984 || h->root.type == bfd_link_hash_undefined))))
3986 /* Make sure this symbol is output as a dynamic symbol.
3987 Undefined weak syms won't yet be marked as dynamic. */
3988 if (h->dynindx == -1
3989 && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
3991 if (! bfd_elf64_link_record_dynamic_symbol (info, h))
3995 /* If that succeeded, we know we'll be keeping all the
3997 if (h->dynindx != -1)
4001 eh->dyn_relocs = NULL;
4006 /* Finally, allocate space. */
4007 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4009 asection *sreloc = elf_section_data (p->sec)->sreloc;
4010 sreloc->_raw_size += p->count * sizeof (Elf64_External_Rela);
4016 /* Find any dynamic relocs that apply to read-only sections. */
4019 readonly_dynrelocs (h, inf)
4020 struct elf_link_hash_entry *h;
4023 struct ppc_link_hash_entry *eh;
4024 struct ppc_dyn_relocs *p;
4026 if (h->root.type == bfd_link_hash_warning)
4027 h = (struct elf_link_hash_entry *) h->root.u.i.link;
4029 eh = (struct ppc_link_hash_entry *) h;
4030 for (p = eh->dyn_relocs; p != NULL; p = p->next)
4032 asection *s = p->sec->output_section;
4034 if (s != NULL && (s->flags & SEC_READONLY) != 0)
4036 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4038 info->flags |= DF_TEXTREL;
4040 /* Not an error, just cut short the traversal. */
4047 /* Set the sizes of the dynamic sections. */
4050 ppc64_elf_size_dynamic_sections (output_bfd, info)
4051 bfd *output_bfd ATTRIBUTE_UNUSED;
4052 struct bfd_link_info *info;
4054 struct ppc_link_hash_table *htab;
4060 htab = ppc_hash_table (info);
4061 dynobj = htab->elf.dynobj;
4065 if (htab->elf.dynamic_sections_created)
4067 /* Set the contents of the .interp section to the interpreter. */
4070 s = bfd_get_section_by_name (dynobj, ".interp");
4073 s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
4074 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
4078 /* Set up .got offsets for local syms, and space for local dynamic
4080 for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next)
4082 bfd_signed_vma *local_got;
4083 bfd_signed_vma *end_local_got;
4084 bfd_size_type locsymcount;
4085 Elf_Internal_Shdr *symtab_hdr;
4088 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour)
4091 for (s = ibfd->sections; s != NULL; s = s->next)
4093 struct ppc_dyn_relocs *p;
4095 for (p = *((struct ppc_dyn_relocs **)
4096 &elf_section_data (s)->local_dynrel);
4100 if (!bfd_is_abs_section (p->sec)
4101 && bfd_is_abs_section (p->sec->output_section))
4103 /* Input section has been discarded, either because
4104 it is a copy of a linkonce section or due to
4105 linker script /DISCARD/, so we'll be discarding
4108 else if (p->count != 0)
4110 srel = elf_section_data (p->sec)->sreloc;
4111 srel->_raw_size += p->count * sizeof (Elf64_External_Rela);
4112 if ((p->sec->output_section->flags & SEC_READONLY) != 0)
4113 info->flags |= DF_TEXTREL;
4118 local_got = elf_local_got_refcounts (ibfd);
4122 symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4123 locsymcount = symtab_hdr->sh_info;
4124 end_local_got = local_got + locsymcount;
4126 srel = htab->srelgot;
4127 for (; local_got < end_local_got; ++local_got)
4131 *local_got = s->_raw_size;
4134 srel->_raw_size += sizeof (Elf64_External_Rela);
4137 *local_got = (bfd_vma) -1;
4141 if (!edit_opd (output_bfd, info))
4144 /* Allocate global sym .plt and .got entries, and space for global
4145 sym dynamic relocs. */
4146 elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, (PTR) info);
4148 /* We now have determined the sizes of the various dynamic sections.
4149 Allocate memory for them. */
4151 for (s = dynobj->sections; s != NULL; s = s->next)
4153 if ((s->flags & SEC_LINKER_CREATED) == 0)
4156 if (s == htab->sbrlt || s == htab->srelbrlt)
4157 /* These haven't been allocated yet; don't strip. */
4159 else if (s == htab->splt
4161 || s == htab->sglink)
4163 /* Strip this section if we don't need it; see the
4166 else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
4168 if (s->_raw_size == 0)
4170 /* If we don't need this section, strip it from the
4171 output file. This is mostly to handle .rela.bss and
4172 .rela.plt. We must create both sections in
4173 create_dynamic_sections, because they must be created
4174 before the linker maps input sections to output
4175 sections. The linker does that before
4176 adjust_dynamic_symbol is called, and it is that
4177 function which decides whether anything needs to go
4178 into these sections. */
4182 if (s != htab->srelplt)
4185 /* We use the reloc_count field as a counter if we need
4186 to copy relocs into the output file. */
4192 /* It's not one of our sections, so don't allocate space. */
4196 if (s->_raw_size == 0)
4198 _bfd_strip_section_from_output (info, s);
4202 /* .plt is in the bss section. We don't initialise it. */
4203 if ((s->flags & SEC_LOAD) == 0)
4206 /* Allocate memory for the section contents. We use bfd_zalloc
4207 here in case unused entries are not reclaimed before the
4208 section's contents are written out. This should not happen,
4209 but this way if it does, we get a R_PPC64_NONE reloc instead
4211 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
4212 if (s->contents == NULL)
4216 if (htab->elf.dynamic_sections_created)
4218 /* Add some entries to the .dynamic section. We fill in the
4219 values later, in ppc64_elf_finish_dynamic_sections, but we
4220 must add the entries now so that we get the correct size for
4221 the .dynamic section. The DT_DEBUG entry is filled in by the
4222 dynamic linker and used by the debugger. */
4223 #define add_dynamic_entry(TAG, VAL) \
4224 bfd_elf64_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
4228 if (!add_dynamic_entry (DT_DEBUG, 0))
4232 if (htab->splt != NULL && htab->splt->_raw_size != 0)
4234 if (!add_dynamic_entry (DT_PLTGOT, 0)
4235 || !add_dynamic_entry (DT_PLTRELSZ, 0)
4236 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
4237 || !add_dynamic_entry (DT_JMPREL, 0)
4238 || !add_dynamic_entry (DT_PPC64_GLINK, 0))
4244 if (!add_dynamic_entry (DT_PPC64_OPD, 0)
4245 || !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
4251 if (!add_dynamic_entry (DT_RELA, 0)
4252 || !add_dynamic_entry (DT_RELASZ, 0)
4253 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf64_External_Rela)))
4256 /* If any dynamic relocs apply to a read-only section,
4257 then we need a DT_TEXTREL entry. */
4258 if ((info->flags & DF_TEXTREL) == 0)
4259 elf_link_hash_traverse (&htab->elf, readonly_dynrelocs,
4262 if ((info->flags & DF_TEXTREL) != 0)
4264 if (!add_dynamic_entry (DT_TEXTREL, 0))
4269 #undef add_dynamic_entry
4274 /* Determine the type of stub needed, if any, for a call. */
4276 static INLINE enum ppc_stub_type
4277 ppc_type_of_stub (input_sec, rel, hash, destination)
4278 asection *input_sec;
4279 const Elf_Internal_Rela *rel;
4280 struct ppc_link_hash_entry **hash;
4281 bfd_vma destination;
4283 struct ppc_link_hash_entry *h = *hash;
4285 bfd_vma branch_offset;
4286 bfd_vma max_branch_offset;
4287 unsigned int r_type;
4292 && h->oh->plt.offset != (bfd_vma) -1
4293 && h->oh->dynindx != -1)
4295 *hash = (struct ppc_link_hash_entry *) h->oh;
4296 return ppc_stub_plt_call;
4299 if (h->elf.root.type == bfd_link_hash_undefweak
4300 || h->elf.root.type == bfd_link_hash_undefined)
4301 return ppc_stub_none;
4304 /* Determine where the call point is. */
4305 location = (input_sec->output_offset
4306 + input_sec->output_section->vma
4309 branch_offset = destination - location;
4310 r_type = ELF64_R_TYPE (rel->r_info);
4312 /* Determine if a long branch stub is needed. */
4313 max_branch_offset = 1 << 25;
4314 if (r_type != (unsigned int) R_PPC64_REL24)
4315 max_branch_offset = 1 << 15;
4317 if (branch_offset + max_branch_offset >= 2 * max_branch_offset)
4318 /* We need a stub. Figure out whether a long_branch or plt_branch
4320 return ppc_stub_long_branch;
4322 return ppc_stub_none;
4325 /* Build a .plt call stub. */
4328 build_plt_stub (obfd, p, offset, glink)
4334 #define PPC_LO(v) ((v) & 0xffff)
4335 #define PPC_HI(v) (((v) >> 16) & 0xffff)
4336 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
4339 bfd_put_32 (obfd, LD_R2_40R1, p), p += 4;
4340 bfd_put_32 (obfd, ADDIS_R12_R2 | PPC_HA (offset), p), p += 4;
4342 bfd_put_32 (obfd, STD_R2_40R1, p), p += 4;
4343 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4344 if (PPC_HA (offset + 8) != PPC_HA (offset))
4345 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4347 bfd_put_32 (obfd, LD_R2_0R12 | PPC_LO (offset), p), p += 4;
4348 if (PPC_HA (offset + 8) != PPC_HA (offset))
4349 bfd_put_32 (obfd, ADDIS_R12_R12_1, p), p += 4;
4351 bfd_put_32 (obfd, MTCTR_R11, p), p += 4;
4352 bfd_put_32 (obfd, LD_R11_0R12 | PPC_LO (offset), p), p += 4;
4353 bfd_put_32 (obfd, BCTR, p), p += 4;
4358 ppc_build_one_stub (gen_entry, in_arg)
4359 struct bfd_hash_entry *gen_entry;
4362 struct ppc_stub_hash_entry *stub_entry;
4363 struct ppc_branch_hash_entry *br_entry;
4364 struct bfd_link_info *info;
4365 struct ppc_link_hash_table *htab;
4374 /* Massage our args to the form they really have. */
4375 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4376 info = (struct bfd_link_info *) in_arg;
4378 htab = ppc_hash_table (info);
4379 stub_sec = stub_entry->stub_sec;
4381 /* Make a note of the offset within the stubs for this entry. */
4382 stub_entry->stub_offset = stub_sec->_cooked_size;
4383 loc = stub_sec->contents + stub_entry->stub_offset;
4385 stub_bfd = stub_sec->owner;
4387 switch (stub_entry->stub_type)
4389 case ppc_stub_long_branch:
4390 /* Branches are relative. This is where we are going to. */
4391 off = (stub_entry->target_value
4392 + stub_entry->target_section->output_offset
4393 + stub_entry->target_section->output_section->vma);
4395 /* And this is where we are coming from. */
4396 off -= (stub_entry->stub_offset
4397 + stub_sec->output_offset
4398 + stub_sec->output_section->vma);
4400 BFD_ASSERT (off + (1 << 25) < (bfd_vma) (1 << 26));
4402 bfd_put_32 (stub_bfd, (bfd_vma) B_DOT | (off & 0x3fffffc), loc);
4406 case ppc_stub_plt_branch:
4407 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4408 stub_entry->root.string + 9,
4410 if (br_entry == NULL)
4412 (*_bfd_error_handler) (_("can't find branch stub `%s'"),
4413 stub_entry->root.string + 9);
4414 htab->stub_error = true;
4418 off = (stub_entry->target_value
4419 + stub_entry->target_section->output_offset
4420 + stub_entry->target_section->output_section->vma);
4422 bfd_put_64 (htab->sbrlt->owner, off,
4423 htab->sbrlt->contents + br_entry->offset);
4427 /* Create a reloc for the branch lookup table entry. */
4428 Elf_Internal_Rela rela;
4429 Elf64_External_Rela *r;
4431 rela.r_offset = (br_entry->offset
4432 + htab->sbrlt->output_offset
4433 + htab->sbrlt->output_section->vma);
4434 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
4435 rela.r_addend = off;
4437 r = (Elf64_External_Rela *) htab->srelbrlt->contents;
4438 r += htab->srelbrlt->reloc_count++;
4439 bfd_elf64_swap_reloca_out (htab->srelbrlt->owner, &rela, r);
4442 off = (br_entry->offset
4443 + htab->sbrlt->output_offset
4444 + htab->sbrlt->output_section->vma
4445 - elf_gp (htab->sbrlt->output_section->owner)
4448 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
4450 (*_bfd_error_handler)
4451 (_("linkage table error against `%s'"),
4452 stub_entry->root.string);
4453 bfd_set_error (bfd_error_bad_value);
4454 htab->stub_error = true;
4459 bfd_put_32 (stub_bfd, (bfd_vma) ADDIS_R12_R2 | PPC_HA (indx), loc);
4460 bfd_put_32 (stub_bfd, (bfd_vma) LD_R11_0R12 | PPC_LO (indx), loc + 4);
4461 bfd_put_32 (stub_bfd, (bfd_vma) MTCTR_R11, loc + 8);
4462 bfd_put_32 (stub_bfd, (bfd_vma) BCTR, loc + 12);
4466 case ppc_stub_plt_call:
4467 /* Build the .glink lazy link call stub. */
4468 p = htab->sglink->contents + htab->sglink->_cooked_size;
4469 indx = htab->sglink->reloc_count;
4472 bfd_put_32 (htab->sglink->owner, LI_R0_0 | indx, p);
4477 bfd_put_32 (htab->sglink->owner, LIS_R0_0 | PPC_HI (indx), p);
4479 bfd_put_32 (htab->sglink->owner, ORI_R0_R0_0 | PPC_LO (indx), p);
4482 bfd_put_32 (htab->sglink->owner,
4483 B_DOT | ((htab->sglink->contents - p) & 0x3fffffc), p);
4485 htab->sglink->_cooked_size = p - htab->sglink->contents;
4486 htab->sglink->reloc_count += 1;
4488 /* Do the best we can for shared libraries built without
4489 exporting ".foo" for each "foo". This can happen when symbol
4490 versioning scripts strip all bar a subset of symbols. */
4491 if (stub_entry->h->oh->root.type != bfd_link_hash_defined
4492 && stub_entry->h->oh->root.type != bfd_link_hash_defweak)
4494 /* Point the symbol at the stub. There may be multiple stubs,
4495 we don't really care; The main thing is to make this sym
4496 defined somewhere. */
4497 stub_entry->h->oh->root.type = bfd_link_hash_defined;
4498 stub_entry->h->oh->root.u.def.section = stub_entry->stub_sec;
4499 stub_entry->h->oh->root.u.def.value = stub_entry->stub_offset;
4502 /* Now build the stub. */
4503 off = stub_entry->h->elf.plt.offset;
4504 if (off >= (bfd_vma) -2)
4507 off &= ~ (bfd_vma) 1;
4508 off += (htab->splt->output_offset
4509 + htab->splt->output_section->vma
4510 - elf_gp (htab->splt->output_section->owner)
4513 if (off + 0x80000000 > 0xffffffff || (off & 7) != 0)
4515 (*_bfd_error_handler)
4516 (_("linkage table error against `%s'"),
4517 stub_entry->h->elf.root.root.string);
4518 bfd_set_error (bfd_error_bad_value);
4519 htab->stub_error = true;
4523 p = build_plt_stub (stub_bfd, loc, (int) off, 0);
4532 stub_sec->_cooked_size += size;
4536 /* As above, but don't actually build the stub. Just bump offset so
4537 we know stub section sizes, and select plt_branch stubs where
4538 long_branch stubs won't do. */
4541 ppc_size_one_stub (gen_entry, in_arg)
4542 struct bfd_hash_entry *gen_entry;
4545 struct ppc_stub_hash_entry *stub_entry;
4546 struct ppc_link_hash_table *htab;
4550 /* Massage our args to the form they really have. */
4551 stub_entry = (struct ppc_stub_hash_entry *) gen_entry;
4552 htab = (struct ppc_link_hash_table *) in_arg;
4554 if (stub_entry->stub_type == ppc_stub_plt_call)
4556 off = stub_entry->h->elf.plt.offset & ~(bfd_vma) 1;
4557 off += (htab->splt->output_offset
4558 + htab->splt->output_section->vma
4559 - elf_gp (htab->splt->output_section->owner)
4563 if (PPC_HA ((int) off + 16) != PPC_HA ((int) off))
4568 /* ppc_stub_long_branch or ppc_stub_plt_branch. */
4569 stub_entry->stub_type = ppc_stub_long_branch;
4572 off = (stub_entry->target_value
4573 + stub_entry->target_section->output_offset
4574 + stub_entry->target_section->output_section->vma);
4575 off -= (stub_entry->stub_sec->_raw_size
4576 + stub_entry->stub_sec->output_offset
4577 + stub_entry->stub_sec->output_section->vma);
4579 if (off + (1 << 25) >= (bfd_vma) (1 << 26))
4581 struct ppc_branch_hash_entry *br_entry;
4583 br_entry = ppc_branch_hash_lookup (&htab->branch_hash_table,
4584 stub_entry->root.string + 9,
4586 if (br_entry == NULL)
4588 (*_bfd_error_handler) (_("can't build branch stub `%s'"),
4589 stub_entry->root.string + 9);
4590 htab->stub_error = true;
4594 if (br_entry->iter != htab->stub_iteration)
4596 br_entry->iter = htab->stub_iteration;
4597 br_entry->offset = htab->sbrlt->_raw_size;
4598 htab->sbrlt->_raw_size += 8;
4600 stub_entry->stub_type = ppc_stub_plt_branch;
4605 stub_entry->stub_sec->_raw_size += size;
4609 /* Set up various things so that we can make a list of input sections
4610 for each output section included in the link. Returns -1 on error,
4611 0 when no stubs will be needed, and 1 on success. */
4614 ppc64_elf_setup_section_lists (output_bfd, info)
4616 struct bfd_link_info *info;
4619 int top_id, top_index;
4621 asection **input_list, **list;
4623 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4625 if (htab->elf.root.creator->flavour != bfd_target_elf_flavour
4626 || htab->sbrlt == NULL)
4629 /* Find the top input section id. */
4630 for (input_bfd = info->input_bfds, top_id = 0;
4632 input_bfd = input_bfd->link_next)
4634 for (section = input_bfd->sections;
4636 section = section->next)
4638 if (top_id < section->id)
4639 top_id = section->id;
4643 amt = sizeof (struct map_stub) * (top_id + 1);
4644 htab->stub_group = (struct map_stub *) bfd_zmalloc (amt);
4645 if (htab->stub_group == NULL)
4648 /* We can't use output_bfd->section_count here to find the top output
4649 section index as some sections may have been removed, and
4650 _bfd_strip_section_from_output doesn't renumber the indices. */
4651 for (section = output_bfd->sections, top_index = 0;
4653 section = section->next)
4655 if (top_index < section->index)
4656 top_index = section->index;
4659 htab->top_index = top_index;
4660 amt = sizeof (asection *) * (top_index + 1);
4661 input_list = (asection **) bfd_malloc (amt);
4662 htab->input_list = input_list;
4663 if (input_list == NULL)
4666 /* For sections we aren't interested in, mark their entries with a
4667 value we can check later. */
4668 list = input_list + top_index;
4670 *list = bfd_abs_section_ptr;
4671 while (list-- != input_list);
4673 for (section = output_bfd->sections;
4675 section = section->next)
4677 if ((section->flags & SEC_CODE) != 0)
4678 input_list[section->index] = NULL;
4684 /* The linker repeatedly calls this function for each input section,
4685 in the order that input sections are linked into output sections.
4686 Build lists of input sections to determine groupings between which
4687 we may insert linker stubs. */
4690 ppc64_elf_next_input_section (info, isec)
4691 struct bfd_link_info *info;
4694 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4696 if (isec->output_section->index <= htab->top_index)
4698 asection **list = htab->input_list + isec->output_section->index;
4699 if (*list != bfd_abs_section_ptr)
4701 /* Steal the link_sec pointer for our list. */
4702 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
4703 /* This happens to make the list in reverse order,
4704 which is what we want. */
4705 PREV_SEC (isec) = *list;
4711 /* See whether we can group stub sections together. Grouping stub
4712 sections may result in fewer stubs. More importantly, we need to
4713 put all .init* and .fini* stubs at the beginning of the .init or
4714 .fini output sections respectively, because glibc splits the
4715 _init and _fini functions into multiple parts. Putting a stub in
4716 the middle of a function is not a good idea. */
4719 group_sections (htab, stub_group_size, stubs_always_before_branch)
4720 struct ppc_link_hash_table *htab;
4721 bfd_size_type stub_group_size;
4722 boolean stubs_always_before_branch;
4724 asection **list = htab->input_list + htab->top_index;
4727 asection *tail = *list;
4728 if (tail == bfd_abs_section_ptr)
4730 while (tail != NULL)
4734 bfd_size_type total;
4737 if (tail->_cooked_size)
4738 total = tail->_cooked_size;
4740 total = tail->_raw_size;
4741 while ((prev = PREV_SEC (curr)) != NULL
4742 && ((total += curr->output_offset - prev->output_offset)
4746 /* OK, the size from the start of CURR to the end is less
4747 than stub_group_size and thus can be handled by one stub
4748 section. (or the tail section is itself larger than
4749 stub_group_size, in which case we may be toast.) We
4750 should really be keeping track of the total size of stubs
4751 added here, as stubs contribute to the final output
4752 section size. That's a little tricky, and this way will
4753 only break if stubs added make the total size more than
4754 2^25, ie. for the default stub_group_size, if stubs total
4755 more than 2834432 bytes, or over 100000 plt call stubs. */
4758 prev = PREV_SEC (tail);
4759 /* Set up this stub group. */
4760 htab->stub_group[tail->id].link_sec = curr;
4762 while (tail != curr && (tail = prev) != NULL);
4764 /* But wait, there's more! Input sections up to stub_group_size
4765 bytes before the stub section can be handled by it too. */
4766 if (!stubs_always_before_branch)
4770 && ((total += tail->output_offset - prev->output_offset)
4774 prev = PREV_SEC (tail);
4775 htab->stub_group[tail->id].link_sec = curr;
4781 while (list-- != htab->input_list);
4782 free (htab->input_list);
4786 /* Determine and set the size of the stub section for a final link.
4788 The basic idea here is to examine all the relocations looking for
4789 PC-relative calls to a target that is unreachable with a "bl"
4793 ppc64_elf_size_stubs (output_bfd, stub_bfd, info, group_size,
4794 add_stub_section, layout_sections_again)
4797 struct bfd_link_info *info;
4798 bfd_signed_vma group_size;
4799 asection * (*add_stub_section) PARAMS ((const char *, asection *));
4800 void (*layout_sections_again) PARAMS ((void));
4802 bfd_size_type stub_group_size;
4803 boolean stubs_always_before_branch;
4804 struct ppc_link_hash_table *htab = ppc_hash_table (info);
4806 /* Stash our params away. */
4807 htab->stub_bfd = stub_bfd;
4808 htab->add_stub_section = add_stub_section;
4809 htab->layout_sections_again = layout_sections_again;
4810 stubs_always_before_branch = group_size < 0;
4812 stub_group_size = -group_size;
4814 stub_group_size = group_size;
4815 if (stub_group_size == 1)
4817 /* Default values. */
4818 stub_group_size = 30720000;
4819 if (htab->has_14bit_branch)
4820 stub_group_size = 30000;
4823 group_sections (htab, stub_group_size, stubs_always_before_branch);
4828 unsigned int bfd_indx;
4830 boolean stub_changed;
4832 htab->stub_iteration += 1;
4833 stub_changed = false;
4835 for (input_bfd = info->input_bfds, bfd_indx = 0;
4837 input_bfd = input_bfd->link_next, bfd_indx++)
4839 Elf_Internal_Shdr *symtab_hdr;
4841 Elf_Internal_Sym *local_syms = NULL;
4843 /* We'll need the symbol table in a second. */
4844 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
4845 if (symtab_hdr->sh_info == 0)
4848 /* Walk over each section attached to the input bfd. */
4849 for (section = input_bfd->sections;
4851 section = section->next)
4853 Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
4855 /* If there aren't any relocs, then there's nothing more
4857 if ((section->flags & SEC_RELOC) == 0
4858 || section->reloc_count == 0)
4861 /* If this section is a link-once section that will be
4862 discarded, then don't create any stubs. */
4863 if (section->output_section == NULL
4864 || section->output_section->owner != output_bfd)
4867 /* Get the relocs. */
4869 = _bfd_elf64_link_read_relocs (input_bfd, section, NULL,
4870 (Elf_Internal_Rela *) NULL,
4872 if (internal_relocs == NULL)
4873 goto error_ret_free_local;
4875 /* Now examine each relocation. */
4876 irela = internal_relocs;
4877 irelaend = irela + section->reloc_count;
4878 for (; irela < irelaend; irela++)
4880 unsigned int r_type, r_indx;
4881 enum ppc_stub_type stub_type;
4882 struct ppc_stub_hash_entry *stub_entry;
4885 bfd_vma destination;
4886 struct ppc_link_hash_entry *hash;
4888 const asection *id_sec;
4890 r_type = ELF64_R_TYPE (irela->r_info);
4891 r_indx = ELF64_R_SYM (irela->r_info);
4893 if (r_type >= (unsigned int) R_PPC_max)
4895 bfd_set_error (bfd_error_bad_value);
4896 goto error_ret_free_internal;
4899 /* Only look for stubs on branch instructions. */
4900 if (r_type != (unsigned int) R_PPC64_REL24
4901 && r_type != (unsigned int) R_PPC64_REL14
4902 && r_type != (unsigned int) R_PPC64_REL14_BRTAKEN
4903 && r_type != (unsigned int) R_PPC64_REL14_BRNTAKEN)
4906 /* Now determine the call target, its name, value,
4912 if (r_indx < symtab_hdr->sh_info)
4914 /* It's a local symbol. */
4915 Elf_Internal_Sym *sym;
4916 Elf_Internal_Shdr *hdr;
4918 if (local_syms == NULL)
4921 = (Elf_Internal_Sym *) symtab_hdr->contents;
4922 if (local_syms == NULL)
4924 = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
4925 symtab_hdr->sh_info, 0,
4927 if (local_syms == NULL)
4928 goto error_ret_free_internal;
4930 sym = local_syms + r_indx;
4931 hdr = elf_elfsections (input_bfd)[sym->st_shndx];
4932 sym_sec = hdr->bfd_section;
4933 if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
4934 sym_value = sym->st_value;
4935 destination = (sym_value + irela->r_addend
4936 + sym_sec->output_offset
4937 + sym_sec->output_section->vma);
4941 /* It's an external symbol. */
4944 e_indx = r_indx - symtab_hdr->sh_info;
4945 hash = ((struct ppc_link_hash_entry *)
4946 elf_sym_hashes (input_bfd)[e_indx]);
4948 while (hash->elf.root.type == bfd_link_hash_indirect
4949 || hash->elf.root.type == bfd_link_hash_warning)
4950 hash = ((struct ppc_link_hash_entry *)
4951 hash->elf.root.u.i.link);
4953 if (hash->elf.root.type == bfd_link_hash_defined
4954 || hash->elf.root.type == bfd_link_hash_defweak)
4956 sym_sec = hash->elf.root.u.def.section;
4957 sym_value = hash->elf.root.u.def.value;
4958 if (sym_sec->output_section != NULL)
4959 destination = (sym_value + irela->r_addend
4960 + sym_sec->output_offset
4961 + sym_sec->output_section->vma);
4963 else if (hash->elf.root.type == bfd_link_hash_undefweak)
4965 else if (hash->elf.root.type == bfd_link_hash_undefined)
4969 bfd_set_error (bfd_error_bad_value);
4970 goto error_ret_free_internal;
4974 /* Determine what (if any) linker stub is needed. */
4975 stub_type = ppc_type_of_stub (section, irela, &hash,
4977 if (stub_type == ppc_stub_none)
4980 /* Support for grouping stub sections. */
4981 id_sec = htab->stub_group[section->id].link_sec;
4983 /* Get the name of this stub. */
4984 stub_name = ppc_stub_name (id_sec, sym_sec, hash, irela);
4986 goto error_ret_free_internal;
4988 stub_entry = ppc_stub_hash_lookup (&htab->stub_hash_table,
4989 stub_name, false, false);
4990 if (stub_entry != NULL)
4992 /* The proper stub has already been created. */
4997 stub_entry = ppc_add_stub (stub_name, section, htab);
4998 if (stub_entry == NULL)
5001 error_ret_free_internal:
5002 if (elf_section_data (section)->relocs == NULL)
5003 free (internal_relocs);
5004 error_ret_free_local:
5005 if (local_syms != NULL
5006 && (symtab_hdr->contents
5007 != (unsigned char *) local_syms))
5012 stub_entry->target_value = sym_value;
5013 stub_entry->target_section = sym_sec;
5014 stub_entry->stub_type = stub_type;
5015 stub_entry->h = hash;
5016 stub_changed = true;
5019 /* We're done with the internal relocs, free them. */
5020 if (elf_section_data (section)->relocs != internal_relocs)
5021 free (internal_relocs);
5024 if (local_syms != NULL
5025 && symtab_hdr->contents != (unsigned char *) local_syms)
5027 if (!info->keep_memory)
5030 symtab_hdr->contents = (unsigned char *) local_syms;
5037 /* OK, we've added some stubs. Find out the new size of the
5039 for (stub_sec = htab->stub_bfd->sections;
5041 stub_sec = stub_sec->next)
5043 stub_sec->_raw_size = 0;
5044 stub_sec->_cooked_size = 0;
5046 htab->sbrlt->_raw_size = 0;
5047 htab->sbrlt->_cooked_size = 0;
5049 bfd_hash_traverse (&htab->stub_hash_table, ppc_size_one_stub, htab);
5051 /* Ask the linker to do its stuff. */
5052 (*htab->layout_sections_again) ();
5055 /* It would be nice to strip .branch_lt from the output if the
5056 section is empty, but it's too late. If we strip sections here,
5057 the dynamic symbol table is corrupted since the section symbol
5058 for the stripped section isn't written. */
5063 /* Called after we have determined section placement. If sections
5064 move, we'll be called again. Provide a value for TOCstart. */
5067 ppc64_elf_toc (obfd)
5073 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
5074 order. The TOC starts where the first of these sections starts. */
5075 s = bfd_get_section_by_name (obfd, ".got");
5077 s = bfd_get_section_by_name (obfd, ".toc");
5079 s = bfd_get_section_by_name (obfd, ".tocbss");
5081 s = bfd_get_section_by_name (obfd, ".plt");
5084 /* This may happen for
5085 o references to TOC base (SYM@toc / TOC[tc0]) without a
5088 o --gc-sections and empty TOC sections
5090 FIXME: Warn user? */
5092 /* Look for a likely section. We probably won't even be
5094 for (s = obfd->sections; s != NULL; s = s->next)
5095 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA | SEC_READONLY))
5096 == (SEC_ALLOC | SEC_SMALL_DATA))
5099 for (s = obfd->sections; s != NULL; s = s->next)
5100 if ((s->flags & (SEC_ALLOC | SEC_SMALL_DATA))
5101 == (SEC_ALLOC | SEC_SMALL_DATA))
5104 for (s = obfd->sections; s != NULL; s = s->next)
5105 if ((s->flags & (SEC_ALLOC | SEC_READONLY)) == SEC_ALLOC)
5108 for (s = obfd->sections; s != NULL; s = s->next)
5109 if ((s->flags & SEC_ALLOC) == SEC_ALLOC)
5115 TOCstart = s->output_section->vma + s->output_offset;
5120 /* Build all the stubs associated with the current output file.
5121 The stubs are kept in a hash table attached to the main linker
5122 hash table. This function is called via gldelf64ppc_finish. */
5125 ppc64_elf_build_stubs (info)
5126 struct bfd_link_info *info;
5128 struct ppc_link_hash_table *htab = ppc_hash_table (info);
5133 for (stub_sec = htab->stub_bfd->sections;
5135 stub_sec = stub_sec->next)
5139 /* Allocate memory to hold the linker stubs. */
5140 size = stub_sec->_raw_size;
5143 stub_sec->contents = (bfd_byte *) bfd_zalloc (htab->stub_bfd, size);
5144 if (stub_sec->contents == NULL)
5147 stub_sec->_cooked_size = 0;
5150 if (htab->splt != NULL)
5152 /* Build the .glink plt call stub. */
5153 plt_r2 = (htab->splt->output_offset
5154 + htab->splt->output_section->vma
5155 - elf_gp (htab->splt->output_section->owner)
5157 p = htab->sglink->contents;
5158 p = build_plt_stub (htab->sglink->owner, p, (int) plt_r2, 1);
5159 while (p - htab->sglink->contents < GLINK_CALL_STUB_SIZE)
5161 bfd_put_32 (htab->sglink->owner, NOP, p);
5164 htab->sglink->_cooked_size = p - htab->sglink->contents;
5166 /* Use reloc_count to count entries. */
5167 htab->sglink->reloc_count = 0;
5170 if (htab->sbrlt->_raw_size != 0)
5172 htab->sbrlt->contents = (bfd_byte *) bfd_zalloc (htab->sbrlt->owner,
5173 htab->sbrlt->_raw_size);
5174 if (htab->sbrlt->contents == NULL)
5178 /* Build the stubs as directed by the stub hash table. */
5179 bfd_hash_traverse (&htab->stub_hash_table, ppc_build_one_stub, info);
5180 htab->sglink->reloc_count = 0;
5182 for (stub_sec = htab->stub_bfd->sections;
5184 stub_sec = stub_sec->next)
5186 if (stub_sec->_raw_size != stub_sec->_cooked_size)
5190 if (stub_sec != NULL
5191 || htab->sglink->_raw_size != htab->sglink->_cooked_size)
5193 htab->stub_error = true;
5194 (*_bfd_error_handler) (_("stubs don't match calculated size"));
5197 return !htab->stub_error;
5200 /* The RELOCATE_SECTION function is called by the ELF backend linker
5201 to handle the relocations for a section.
5203 The relocs are always passed as Rela structures; if the section
5204 actually uses Rel structures, the r_addend field will always be
5207 This function is responsible for adjust the section contents as
5208 necessary, and (if using Rela relocs and generating a
5209 relocateable output file) adjusting the reloc addend as
5212 This function does not have to worry about setting the reloc
5213 address or the reloc symbol index.
5215 LOCAL_SYMS is a pointer to the swapped in local symbols.
5217 LOCAL_SECTIONS is an array giving the section in the input file
5218 corresponding to the st_shndx field of each local symbol.
5220 The global hash table entry for the global symbols can be found
5221 via elf_sym_hashes (input_bfd).
5223 When generating relocateable output, this function must handle
5224 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
5225 going to be the section symbol corresponding to the output
5226 section, which means that the addend must be adjusted
5230 ppc64_elf_relocate_section (output_bfd, info, input_bfd, input_section,
5231 contents, relocs, local_syms, local_sections)
5233 struct bfd_link_info *info;
5235 asection *input_section;
5237 Elf_Internal_Rela *relocs;
5238 Elf_Internal_Sym *local_syms;
5239 asection **local_sections;
5241 struct ppc_link_hash_table *htab;
5242 Elf_Internal_Shdr *symtab_hdr;
5243 struct elf_link_hash_entry **sym_hashes;
5244 Elf_Internal_Rela *rel;
5245 Elf_Internal_Rela *relend;
5246 bfd_vma *local_got_offsets;
5250 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
5251 boolean is_power4 = false;
5253 if (info->relocateable)
5256 /* Initialize howto table if needed. */
5257 if (!ppc64_elf_howto_table[R_PPC64_ADDR32])
5260 htab = ppc_hash_table (info);
5261 local_got_offsets = elf_local_got_offsets (input_bfd);
5262 TOCstart = elf_gp (output_bfd);
5263 symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
5264 sym_hashes = elf_sym_hashes (input_bfd);
5265 is_opd = elf_section_data (input_section)->tdata != NULL;
5268 relend = relocs + input_section->reloc_count;
5269 for (; rel < relend; rel++)
5271 enum elf_ppc_reloc_type r_type;
5274 bfd_reloc_status_type r;
5275 Elf_Internal_Sym *sym;
5277 struct elf_link_hash_entry *h;
5278 struct elf_link_hash_entry *fdh;
5279 const char *sym_name;
5280 unsigned long r_symndx;
5282 boolean unresolved_reloc;
5285 struct ppc_stub_hash_entry *stub_entry;
5286 bfd_vma max_br_offset;
5289 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rel->r_info);
5290 r_symndx = ELF64_R_SYM (rel->r_info);
5291 offset = rel->r_offset;
5292 addend = rel->r_addend;
5293 r = bfd_reloc_other;
5294 sym = (Elf_Internal_Sym *) 0;
5295 sec = (asection *) 0;
5296 h = (struct elf_link_hash_entry *) 0;
5297 sym_name = (const char *) 0;
5298 unresolved_reloc = false;
5301 if (r_type == R_PPC64_TOC)
5303 /* Relocation value is TOC base. Symbol is ignored. */
5304 relocation = TOCstart + TOC_BASE_OFF;
5306 else if (r_symndx < symtab_hdr->sh_info)
5308 /* It's a local symbol. */
5309 sym = local_syms + r_symndx;
5310 sec = local_sections[r_symndx];
5311 sym_name = "<local symbol>";
5313 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
5314 /* rel may have changed, update our copy of addend. */
5315 addend = rel->r_addend;
5317 if (elf_section_data (sec) != NULL)
5319 long *opd_sym_adjust;
5321 opd_sym_adjust = (long *) elf_section_data (sec)->tdata;
5322 if (opd_sym_adjust != NULL && sym->st_value % 24 == 0)
5323 relocation += opd_sym_adjust[sym->st_value / 24];
5328 /* It's a global symbol. */
5329 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
5330 while (h->root.type == bfd_link_hash_indirect
5331 || h->root.type == bfd_link_hash_warning)
5332 h = (struct elf_link_hash_entry *) h->root.u.i.link;
5333 sym_name = h->root.root.string;
5335 if (h->root.type == bfd_link_hash_defined
5336 || h->root.type == bfd_link_hash_defweak)
5338 sec = h->root.u.def.section;
5339 if (sec->output_section == NULL)
5340 /* Set a flag that will be cleared later if we find a
5341 relocation value for this symbol. output_section
5342 is typically NULL for symbols satisfied by a shared
5344 unresolved_reloc = true;
5346 relocation = (h->root.u.def.value
5347 + sec->output_section->vma
5348 + sec->output_offset);
5350 else if (h->root.type == bfd_link_hash_undefweak)
5352 else if (info->shared
5353 && (!info->symbolic || info->allow_shlib_undefined)
5354 && !info->no_undefined
5355 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
5359 if (! ((*info->callbacks->undefined_symbol)
5360 (info, h->root.root.string, input_bfd, input_section,
5361 offset, (!info->shared
5362 || info->no_undefined
5363 || ELF_ST_VISIBILITY (h->other)))))
5369 /* First handle relocations that tweak non-addend part of insn. */
5376 /* Branch taken prediction relocations. */
5377 case R_PPC64_ADDR14_BRTAKEN:
5378 case R_PPC64_REL14_BRTAKEN:
5379 insn = 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
5382 /* Branch not taken prediction relocations. */
5383 case R_PPC64_ADDR14_BRNTAKEN:
5384 case R_PPC64_REL14_BRNTAKEN:
5385 insn |= bfd_get_32 (output_bfd, contents + offset) & ~(0x01 << 21);
5388 /* Set 'a' bit. This is 0b00010 in BO field for branch
5389 on CR(BI) insns (BO == 001at or 011at), and 0b01000
5390 for branch on CTR insns (BO == 1a00t or 1a01t). */
5391 if ((insn & (0x14 << 21)) == (0x04 << 21))
5393 else if ((insn & (0x14 << 21)) == (0x10 << 21))
5401 + input_section->output_offset
5402 + input_section->output_section->vma);
5404 /* Invert 'y' bit if not the default. */
5405 if ((bfd_signed_vma) (relocation + addend - from) < 0)
5409 bfd_put_32 (output_bfd, (bfd_vma) insn, contents + offset);
5413 /* A REL24 branching to a linkage function is followed by a
5414 nop. We replace the nop with a ld in order to restore
5415 the TOC base pointer. Only calls to shared objects need
5416 to alter the TOC base. These are recognized by their
5417 need for a PLT entry. */
5419 && (fdh = ((struct ppc_link_hash_entry *) h)->oh) != NULL
5420 && fdh->plt.offset != (bfd_vma) -1
5421 && (stub_entry = ppc_get_stub_entry (input_section, sec, fdh,
5422 rel, htab)) != NULL)
5424 boolean can_plt_call = 0;
5426 if (offset + 8 <= input_section->_cooked_size)
5428 insn = bfd_get_32 (input_bfd, contents + offset + 4);
5430 || insn == CROR_151515 || insn == CROR_313131)
5432 bfd_put_32 (input_bfd, (bfd_vma) LD_R2_40R1,
5433 contents + offset + 4);
5440 /* If this is a plain branch rather than a branch
5441 and link, don't require a nop. */
5442 insn = bfd_get_32 (input_bfd, contents + offset);
5443 if ((insn & 1) == 0)
5449 relocation = (stub_entry->stub_offset
5450 + stub_entry->stub_sec->output_offset
5451 + stub_entry->stub_sec->output_section->vma);
5453 unresolved_reloc = false;
5458 && h->root.type == bfd_link_hash_undefweak
5462 /* Tweak calls to undefined weak functions to point at a
5463 blr. We can thus call a weak function without first
5464 checking whether the function is defined. We have a
5465 blr at the end of .sfpr. */
5466 BFD_ASSERT (htab->sfpr->_raw_size != 0);
5467 relocation = (htab->sfpr->_raw_size - 4
5468 + htab->sfpr->output_offset
5469 + htab->sfpr->output_section->vma);
5471 + input_section->output_offset
5472 + input_section->output_section->vma);
5474 /* But let's not be silly about it. If the blr isn't in
5475 reach, just go to the next instruction. */
5476 if (relocation - from + (1 << 25) >= (1 << 26)
5477 || htab->sfpr->_raw_size == 0)
5478 relocation = from + 4;
5487 (*_bfd_error_handler)
5488 (_("%s: unknown relocation type %d for symbol %s"),
5489 bfd_archive_filename (input_bfd), (int) r_type, sym_name);
5491 bfd_set_error (bfd_error_bad_value);
5496 case R_PPC_GNU_VTINHERIT:
5497 case R_PPC_GNU_VTENTRY:
5500 /* GOT16 relocations. Like an ADDR16 using the symbol's
5501 address in the GOT as relocation value instead of the
5502 symbols value itself. Also, create a GOT entry for the
5503 symbol and put the symbol value there. */
5505 case R_PPC64_GOT16_LO:
5506 case R_PPC64_GOT16_HI:
5507 case R_PPC64_GOT16_HA:
5508 case R_PPC64_GOT16_DS:
5509 case R_PPC64_GOT16_LO_DS:
5511 /* Relocation is to the entry for this symbol in the global
5515 if (htab->sgot == NULL)
5522 off = h->got.offset;
5523 dyn = htab->elf.dynamic_sections_created;
5524 if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
5528 || (h->elf_link_hash_flags
5529 & ELF_LINK_FORCED_LOCAL))
5530 && (h->elf_link_hash_flags
5531 & ELF_LINK_HASH_DEF_REGULAR)))
5533 /* This is actually a static link, or it is a
5534 -Bsymbolic link and the symbol is defined
5535 locally, or the symbol was forced to be local
5536 because of a version file. We must initialize
5537 this entry in the global offset table. Since the
5538 offset must always be a multiple of 8, we use the
5539 least significant bit to record whether we have
5540 initialized it already.
5542 When doing a dynamic link, we create a .rel.got
5543 relocation entry to initialize the value. This
5544 is done in the finish_dynamic_symbol routine. */
5549 bfd_put_64 (output_bfd, relocation,
5550 htab->sgot->contents + off);
5555 unresolved_reloc = false;
5559 if (local_got_offsets == NULL)
5562 off = local_got_offsets[r_symndx];
5564 /* The offset must always be a multiple of 8. We use
5565 the least significant bit to record whether we have
5566 already processed this entry. */
5571 bfd_put_64 (output_bfd, relocation,
5572 htab->sgot->contents + off);
5576 Elf_Internal_Rela outrel;
5577 Elf64_External_Rela *loc;
5579 /* We need to generate a R_PPC64_RELATIVE reloc
5580 for the dynamic linker. */
5581 outrel.r_offset = (htab->sgot->output_section->vma
5582 + htab->sgot->output_offset
5584 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5585 outrel.r_addend = relocation;
5586 loc = (Elf64_External_Rela *) htab->srelgot->contents;
5587 loc += htab->srelgot->reloc_count++;
5588 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5591 local_got_offsets[r_symndx] |= 1;
5595 if (off >= (bfd_vma) -2)
5598 relocation = htab->sgot->output_offset + off;
5600 /* TOC base (r2) is TOC start plus 0x8000. */
5601 addend -= TOC_BASE_OFF;
5605 case R_PPC64_PLT16_HA:
5606 case R_PPC64_PLT16_HI:
5607 case R_PPC64_PLT16_LO:
5610 /* Relocation is to the entry for this symbol in the
5611 procedure linkage table. */
5613 /* Resolve a PLT reloc against a local symbol directly,
5614 without using the procedure linkage table. */
5618 if (h->plt.offset == (bfd_vma) -1
5619 || htab->splt == NULL)
5621 /* We didn't make a PLT entry for this symbol. This
5622 happens when statically linking PIC code, or when
5623 using -Bsymbolic. */
5627 relocation = (htab->splt->output_section->vma
5628 + htab->splt->output_offset
5630 unresolved_reloc = false;
5633 /* TOC16 relocs. We want the offset relative to the TOC base,
5634 which is the address of the start of the TOC plus 0x8000.
5635 The TOC consists of sections .got, .toc, .tocbss, and .plt,
5638 case R_PPC64_TOC16_LO:
5639 case R_PPC64_TOC16_HI:
5640 case R_PPC64_TOC16_DS:
5641 case R_PPC64_TOC16_LO_DS:
5642 case R_PPC64_TOC16_HA:
5643 addend -= TOCstart + TOC_BASE_OFF;
5646 /* Relocate against the beginning of the section. */
5647 case R_PPC64_SECTOFF:
5648 case R_PPC64_SECTOFF_LO:
5649 case R_PPC64_SECTOFF_HI:
5650 case R_PPC64_SECTOFF_DS:
5651 case R_PPC64_SECTOFF_LO_DS:
5652 case R_PPC64_SECTOFF_HA:
5653 if (sec != (asection *) 0)
5654 addend -= sec->output_section->vma;
5658 case R_PPC64_REL14_BRNTAKEN:
5659 case R_PPC64_REL14_BRTAKEN:
5663 /* Relocations that may need to be propagated if this is a
5667 case R_PPC64_ADDR14:
5668 case R_PPC64_ADDR14_BRNTAKEN:
5669 case R_PPC64_ADDR14_BRTAKEN:
5670 case R_PPC64_ADDR16:
5671 case R_PPC64_ADDR16_DS:
5672 case R_PPC64_ADDR16_HA:
5673 case R_PPC64_ADDR16_HI:
5674 case R_PPC64_ADDR16_HIGHER:
5675 case R_PPC64_ADDR16_HIGHERA:
5676 case R_PPC64_ADDR16_HIGHEST:
5677 case R_PPC64_ADDR16_HIGHESTA:
5678 case R_PPC64_ADDR16_LO:
5679 case R_PPC64_ADDR16_LO_DS:
5680 case R_PPC64_ADDR24:
5681 case R_PPC64_ADDR30:
5682 case R_PPC64_ADDR32:
5683 case R_PPC64_ADDR64:
5684 case R_PPC64_UADDR16:
5685 case R_PPC64_UADDR32:
5686 case R_PPC64_UADDR64:
5687 /* r_symndx will be zero only for relocs against symbols
5688 from removed linkonce sections, or sections discarded by
5695 if ((input_section->flags & SEC_ALLOC) == 0)
5698 if (NO_OPD_RELOCS && is_opd)
5702 && (IS_ABSOLUTE_RELOC (r_type)
5705 && (! info->symbolic
5706 || (h->elf_link_hash_flags
5707 & ELF_LINK_HASH_DEF_REGULAR) == 0))))
5711 && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
5712 && (((h->elf_link_hash_flags
5713 & ELF_LINK_HASH_DEF_DYNAMIC) != 0
5714 && (h->elf_link_hash_flags
5715 & ELF_LINK_HASH_DEF_REGULAR) == 0)
5716 || h->root.type == bfd_link_hash_undefweak
5717 || h->root.type == bfd_link_hash_undefined)))
5719 Elf_Internal_Rela outrel;
5720 boolean skip, relocate;
5722 Elf64_External_Rela *loc;
5724 /* When generating a dynamic object, these relocations
5725 are copied into the output file to be resolved at run
5732 _bfd_elf_section_offset (output_bfd, info, input_section,
5734 if (outrel.r_offset == (bfd_vma) -1)
5736 else if (outrel.r_offset == (bfd_vma) -2)
5737 skip = true, relocate = true;
5738 outrel.r_offset += (input_section->output_section->vma
5739 + input_section->output_offset);
5740 outrel.r_addend = addend;
5743 memset (&outrel, 0, sizeof outrel);
5747 && (!IS_ABSOLUTE_RELOC (r_type)
5750 || (h->elf_link_hash_flags
5751 & ELF_LINK_HASH_DEF_REGULAR) == 0))
5752 outrel.r_info = ELF64_R_INFO (h->dynindx, r_type);
5755 /* This symbol is local, or marked to become local,
5756 or this is an opd section reloc which must point
5757 at a local function. */
5758 outrel.r_addend += relocation;
5760 if (r_type == R_PPC64_ADDR64 || r_type == R_PPC64_TOC)
5762 if (is_opd && h != NULL)
5764 /* Lie about opd entries. This case occurs
5765 when building shared libraries and we
5766 reference a function in another shared
5767 lib. The same thing happens for a weak
5768 definition in an application that's
5769 overridden by a strong definition in a
5770 shared lib. (I believe this is a generic
5771 bug in binutils handling of weak syms.)
5772 In these cases we won't use the opd
5773 entry in this lib. */
5774 unresolved_reloc = false;
5776 outrel.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
5782 if (bfd_is_abs_section (sec))
5784 else if (sec == NULL || sec->owner == NULL)
5786 bfd_set_error (bfd_error_bad_value);
5793 osec = sec->output_section;
5794 indx = elf_section_data (osec)->dynindx;
5796 /* We are turning this relocation into one
5797 against a section symbol, so subtract out
5798 the output section's address but not the
5799 offset of the input section in the output
5801 outrel.r_addend -= osec->vma;
5804 outrel.r_info = ELF64_R_INFO (indx, r_type);
5808 sreloc = elf_section_data (input_section)->sreloc;
5812 loc = (Elf64_External_Rela *) sreloc->contents;
5813 loc += sreloc->reloc_count++;
5814 bfd_elf64_swap_reloca_out (output_bfd, &outrel, loc);
5816 /* If this reloc is against an external symbol, it will
5817 be computed at runtime, so there's no need to do
5825 case R_PPC64_GLOB_DAT:
5826 case R_PPC64_JMP_SLOT:
5827 case R_PPC64_RELATIVE:
5828 /* We shouldn't ever see these dynamic relocs in relocatable
5832 case R_PPC64_PLTGOT16:
5833 case R_PPC64_PLTGOT16_DS:
5834 case R_PPC64_PLTGOT16_HA:
5835 case R_PPC64_PLTGOT16_HI:
5836 case R_PPC64_PLTGOT16_LO:
5837 case R_PPC64_PLTGOT16_LO_DS:
5838 case R_PPC64_PLTREL32:
5839 case R_PPC64_PLTREL64:
5840 /* These ones haven't been implemented yet. */
5842 (*_bfd_error_handler)
5843 (_("%s: Relocation %s is not supported for symbol %s."),
5844 bfd_archive_filename (input_bfd),
5845 ppc64_elf_howto_table[(int) r_type]->name, sym_name);
5847 bfd_set_error (bfd_error_invalid_operation);
5852 /* Do any further special processing. */
5858 case R_PPC64_ADDR16_HA:
5859 case R_PPC64_ADDR16_HIGHERA:
5860 case R_PPC64_ADDR16_HIGHESTA:
5861 case R_PPC64_PLT16_HA:
5862 case R_PPC64_TOC16_HA:
5863 case R_PPC64_SECTOFF_HA:
5864 /* It's just possible that this symbol is a weak symbol
5865 that's not actually defined anywhere. In that case,
5866 'sec' would be NULL, and we should leave the symbol
5867 alone (it will be set to zero elsewhere in the link). */
5869 /* Add 0x10000 if sign bit in 0:15 is set. */
5870 addend += ((relocation + addend) & 0x8000) << 1;
5873 case R_PPC64_ADDR16_DS:
5874 case R_PPC64_ADDR16_LO_DS:
5875 case R_PPC64_GOT16_DS:
5876 case R_PPC64_GOT16_LO_DS:
5877 case R_PPC64_PLT16_LO_DS:
5878 case R_PPC64_SECTOFF_DS:
5879 case R_PPC64_SECTOFF_LO_DS:
5880 case R_PPC64_TOC16_DS:
5881 case R_PPC64_TOC16_LO_DS:
5882 case R_PPC64_PLTGOT16_DS:
5883 case R_PPC64_PLTGOT16_LO_DS:
5884 if (((relocation + addend) & 3) != 0)
5886 (*_bfd_error_handler)
5887 (_("%s: error: relocation %s not a multiple of 4"),
5888 bfd_archive_filename (input_bfd),
5889 ppc64_elf_howto_table[(int) r_type]->name);
5890 bfd_set_error (bfd_error_bad_value);
5897 case R_PPC64_REL14_BRNTAKEN:
5898 case R_PPC64_REL14_BRTAKEN:
5899 max_br_offset = 1 << 15;
5903 max_br_offset = 1 << 25;
5906 /* If the branch is out of reach, then redirect the
5907 call to the local stub for this function. */
5909 + input_section->output_offset
5910 + input_section->output_section->vma);
5911 if (relocation + addend - from + max_br_offset >= 2 * max_br_offset
5912 && (stub_entry = ppc_get_stub_entry (input_section, sec, h,
5913 rel, htab)) != NULL)
5915 /* Munge up the value and addend so that we call the stub
5916 rather than the procedure directly. */
5917 relocation = (stub_entry->stub_offset
5918 + stub_entry->stub_sec->output_offset
5919 + stub_entry->stub_sec->output_section->vma);
5925 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
5926 because such sections are not SEC_ALLOC and thus ld.so will
5927 not process them. */
5928 if (unresolved_reloc
5929 && !((input_section->flags & SEC_DEBUGGING) != 0
5930 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
5932 (*_bfd_error_handler)
5933 (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
5934 bfd_archive_filename (input_bfd),
5935 bfd_get_section_name (input_bfd, input_section),
5936 (long) rel->r_offset,
5937 h->root.root.string);
5941 r = _bfd_final_link_relocate (ppc64_elf_howto_table[(int) r_type],
5949 if (r != bfd_reloc_ok)
5955 if (h->root.type == bfd_link_hash_undefweak
5956 && ppc64_elf_howto_table[(int) r_type]->pc_relative)
5958 /* Assume this is a call protected by other code that
5959 detects the symbol is undefined. If this is the case,
5960 we can safely ignore the overflow. If not, the
5961 program is hosed anyway, and a little warning isn't
5967 name = h->root.root.string;
5971 name = bfd_elf_string_from_elf_section (input_bfd,
5972 symtab_hdr->sh_link,
5977 name = bfd_section_name (input_bfd, sec);
5980 if (r == bfd_reloc_overflow)
5984 if (!((*info->callbacks->reloc_overflow)
5985 (info, name, ppc64_elf_howto_table[(int) r_type]->name,
5986 rel->r_addend, input_bfd, input_section, offset)))
5991 (*_bfd_error_handler)
5992 (_("%s(%s+0x%lx): reloc against `%s': error %d"),
5993 bfd_archive_filename (input_bfd),
5994 bfd_get_section_name (input_bfd, input_section),
5995 (long) rel->r_offset, name, (int) r);
6004 /* Finish up dynamic symbol handling. We set the contents of various
6005 dynamic sections here. */
6008 ppc64_elf_finish_dynamic_symbol (output_bfd, info, h, sym)
6010 struct bfd_link_info *info;
6011 struct elf_link_hash_entry *h;
6012 Elf_Internal_Sym *sym;
6014 struct ppc_link_hash_table *htab;
6017 htab = ppc_hash_table (info);
6018 dynobj = htab->elf.dynobj;
6020 if (h->plt.offset != (bfd_vma) -1
6021 && ((struct ppc_link_hash_entry *) h)->is_func_descriptor)
6023 Elf_Internal_Rela rela;
6024 Elf64_External_Rela *loc;
6026 /* This symbol has an entry in the procedure linkage table. Set
6029 if (htab->splt == NULL
6030 || htab->srelplt == NULL
6031 || htab->sglink == NULL)
6034 /* Create a JMP_SLOT reloc to inform the dynamic linker to
6035 fill in the PLT entry. */
6037 rela.r_offset = (htab->splt->output_section->vma
6038 + htab->splt->output_offset
6040 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_JMP_SLOT);
6043 loc = (Elf64_External_Rela *) htab->srelplt->contents;
6044 loc += (h->plt.offset - PLT_INITIAL_ENTRY_SIZE) / PLT_ENTRY_SIZE;
6045 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
6048 if (h->got.offset != (bfd_vma) -1)
6050 Elf_Internal_Rela rela;
6051 Elf64_External_Rela *loc;
6053 /* This symbol has an entry in the global offset table. Set it
6056 if (htab->sgot == NULL || htab->srelgot == NULL)
6059 rela.r_offset = (htab->sgot->output_section->vma
6060 + htab->sgot->output_offset
6061 + (h->got.offset &~ (bfd_vma) 1));
6063 /* If this is a static link, or it is a -Bsymbolic link and the
6064 symbol is defined locally or was forced to be local because
6065 of a version file, we just want to emit a RELATIVE reloc.
6066 The entry in the global offset table will already have been
6067 initialized in the relocate_section function. */
6071 || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
6072 && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
6074 BFD_ASSERT((h->got.offset & 1) != 0);
6075 rela.r_info = ELF64_R_INFO (0, R_PPC64_RELATIVE);
6076 rela.r_addend = (h->root.u.def.value
6077 + h->root.u.def.section->output_section->vma
6078 + h->root.u.def.section->output_offset);
6082 BFD_ASSERT ((h->got.offset & 1) == 0);
6083 bfd_put_64 (output_bfd, (bfd_vma) 0,
6084 htab->sgot->contents + h->got.offset);
6085 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_GLOB_DAT);
6089 loc = (Elf64_External_Rela *) htab->srelgot->contents;
6090 loc += htab->srelgot->reloc_count++;
6091 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
6094 if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
6096 Elf_Internal_Rela rela;
6097 Elf64_External_Rela *loc;
6099 /* This symbol needs a copy reloc. Set it up. */
6101 if (h->dynindx == -1
6102 || (h->root.type != bfd_link_hash_defined
6103 && h->root.type != bfd_link_hash_defweak)
6104 || htab->srelbss == NULL)
6107 rela.r_offset = (h->root.u.def.value
6108 + h->root.u.def.section->output_section->vma
6109 + h->root.u.def.section->output_offset);
6110 rela.r_info = ELF64_R_INFO (h->dynindx, R_PPC64_COPY);
6112 loc = (Elf64_External_Rela *) htab->srelbss->contents;
6113 loc += htab->srelbss->reloc_count++;
6114 bfd_elf64_swap_reloca_out (output_bfd, &rela, loc);
6117 /* Mark some specially defined symbols as absolute. */
6118 if (strcmp (h->root.root.string, "_DYNAMIC") == 0)
6119 sym->st_shndx = SHN_ABS;
6124 /* Used to decide how to sort relocs in an optimal manner for the
6125 dynamic linker, before writing them out. */
6127 static enum elf_reloc_type_class
6128 ppc64_elf_reloc_type_class (rela)
6129 const Elf_Internal_Rela *rela;
6131 enum elf_ppc_reloc_type r_type;
6133 r_type = (enum elf_ppc_reloc_type) ELF64_R_TYPE (rela->r_info);
6136 case R_PPC64_RELATIVE:
6137 return reloc_class_relative;
6138 case R_PPC64_JMP_SLOT:
6139 return reloc_class_plt;
6141 return reloc_class_copy;
6143 return reloc_class_normal;
6147 /* Finish up the dynamic sections. */
6150 ppc64_elf_finish_dynamic_sections (output_bfd, info)
6152 struct bfd_link_info *info;
6154 struct ppc_link_hash_table *htab;
6158 htab = ppc_hash_table (info);
6159 dynobj = htab->elf.dynobj;
6160 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
6162 if (htab->elf.dynamic_sections_created)
6164 Elf64_External_Dyn *dyncon, *dynconend;
6166 if (sdyn == NULL || htab->sgot == NULL)
6169 dyncon = (Elf64_External_Dyn *) sdyn->contents;
6170 dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
6171 for (; dyncon < dynconend; dyncon++)
6173 Elf_Internal_Dyn dyn;
6176 bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn);
6183 case DT_PPC64_GLINK:
6184 dyn.d_un.d_ptr = (htab->sglink->output_section->vma
6185 + htab->sglink->output_offset);
6189 s = bfd_get_section_by_name (output_bfd, ".opd");
6191 dyn.d_un.d_ptr = s->vma;
6194 case DT_PPC64_OPDSZ:
6195 s = bfd_get_section_by_name (output_bfd, ".opd");
6197 dyn.d_un.d_val = s->_raw_size;
6201 dyn.d_un.d_ptr = (htab->splt->output_section->vma
6202 + htab->splt->output_offset);
6206 dyn.d_un.d_ptr = (htab->srelplt->output_section->vma
6207 + htab->srelplt->output_offset);
6211 dyn.d_un.d_val = htab->srelplt->_raw_size;
6215 /* Don't count procedure linkage table relocs in the
6216 overall reloc count. */
6217 if (htab->srelplt != NULL)
6218 dyn.d_un.d_val -= htab->srelplt->_raw_size;
6222 bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon);
6226 if (htab->sgot != NULL && htab->sgot->_raw_size != 0)
6228 /* Fill in the first entry in the global offset table.
6229 We use it to hold the link-time TOCbase. */
6230 bfd_put_64 (output_bfd,
6231 elf_gp (output_bfd) + TOC_BASE_OFF,
6232 htab->sgot->contents);
6234 /* Set .got entry size. */
6235 elf_section_data (htab->sgot->output_section)->this_hdr.sh_entsize = 8;
6238 if (htab->splt != NULL && htab->splt->_raw_size != 0)
6240 /* Set .plt entry size. */
6241 elf_section_data (htab->splt->output_section)->this_hdr.sh_entsize
6248 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
6249 #define TARGET_LITTLE_NAME "elf64-powerpcle"
6250 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
6251 #define TARGET_BIG_NAME "elf64-powerpc"
6252 #define ELF_ARCH bfd_arch_powerpc
6253 #define ELF_MACHINE_CODE EM_PPC64
6254 #define ELF_MAXPAGESIZE 0x10000
6255 #define elf_info_to_howto ppc64_elf_info_to_howto
6257 #ifdef EM_CYGNUS_POWERPC
6258 #define ELF_MACHINE_ALT1 EM_CYGNUS_POWERPC
6262 #define ELF_MACHINE_ALT2 EM_PPC_OLD
6265 #define elf_backend_want_got_sym 0
6266 #define elf_backend_want_plt_sym 0
6267 #define elf_backend_plt_alignment 3
6268 #define elf_backend_plt_not_loaded 1
6269 #define elf_backend_got_symbol_offset 0
6270 #define elf_backend_got_header_size 8
6271 #define elf_backend_plt_header_size PLT_INITIAL_ENTRY_SIZE
6272 #define elf_backend_can_gc_sections 1
6273 #define elf_backend_can_refcount 1
6274 #define elf_backend_rela_normal 1
6276 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
6277 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
6278 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
6279 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
6281 #define elf_backend_object_p ppc64_elf_object_p
6282 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
6283 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
6284 #define elf_backend_check_relocs ppc64_elf_check_relocs
6285 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
6286 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
6287 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
6288 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
6289 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
6290 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
6291 #define elf_backend_relocate_section ppc64_elf_relocate_section
6292 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
6293 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
6294 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
6296 #include "elf64-target.h"
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