1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Written by Linus Nordberg, Swox AB <info@swox.com>,
5 based on elf32-ppc.c by Ian Lance Taylor.
6 Largely rewritten by Alan Modra <amodra@bigpond.net.au>
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 2 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License along
21 with this program; if not, write to the Free Software Foundation, Inc.,
22 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
24 /* The 64-bit PowerPC ELF ABI may be found at
25 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
26 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
34 #include "elf/ppc64.h"
35 #include "elf64-ppc.h"
37 static bfd_reloc_status_type ppc64_elf_ha_reloc
38 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
39 static bfd_reloc_status_type ppc64_elf_branch_reloc
40 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
41 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
42 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
43 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
44 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
45 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
46 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
47 static bfd_reloc_status_type ppc64_elf_toc_reloc
48 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
49 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
50 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
51 static bfd_reloc_status_type ppc64_elf_toc64_reloc
52 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
53 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
54 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
55 static bfd_vma opd_entry_value
56 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
58 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
59 #define TARGET_LITTLE_NAME "elf64-powerpcle"
60 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
61 #define TARGET_BIG_NAME "elf64-powerpc"
62 #define ELF_ARCH bfd_arch_powerpc
63 #define ELF_MACHINE_CODE EM_PPC64
64 #define ELF_MAXPAGESIZE 0x10000
65 #define ELF_COMMONPAGESIZE 0x1000
66 #define elf_info_to_howto ppc64_elf_info_to_howto
68 #define elf_backend_want_got_sym 0
69 #define elf_backend_want_plt_sym 0
70 #define elf_backend_plt_alignment 3
71 #define elf_backend_plt_not_loaded 1
72 #define elf_backend_got_header_size 8
73 #define elf_backend_can_gc_sections 1
74 #define elf_backend_can_refcount 1
75 #define elf_backend_rela_normal 1
76 #define elf_backend_default_execstack 0
78 #define bfd_elf64_mkobject ppc64_elf_mkobject
79 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
80 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
81 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
82 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
83 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
84 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
85 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
87 #define elf_backend_object_p ppc64_elf_object_p
88 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
89 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
90 #define elf_backend_write_core_note ppc64_elf_write_core_note
91 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
92 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
93 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
94 #define elf_backend_check_directives ppc64_elf_check_directives
95 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
96 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
97 #define elf_backend_check_relocs ppc64_elf_check_relocs
98 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
99 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
100 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
101 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
102 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
103 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
104 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
105 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
106 #define elf_backend_action_discarded ppc64_elf_action_discarded
107 #define elf_backend_relocate_section ppc64_elf_relocate_section
108 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
109 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
110 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
111 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
112 #define elf_backend_special_sections ppc64_elf_special_sections
114 /* The name of the dynamic interpreter. This is put in the .interp
116 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
118 /* The size in bytes of an entry in the procedure linkage table. */
119 #define PLT_ENTRY_SIZE 24
121 /* The initial size of the plt reserved for the dynamic linker. */
122 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
124 /* TOC base pointers offset from start of TOC. */
125 #define TOC_BASE_OFF 0x8000
127 /* Offset of tp and dtp pointers from start of TLS block. */
128 #define TP_OFFSET 0x7000
129 #define DTP_OFFSET 0x8000
131 /* .plt call stub instructions. The normal stub is like this, but
132 sometimes the .plt entry crosses a 64k boundary and we need to
133 insert an addis to adjust r12. */
134 #define PLT_CALL_STUB_SIZE (7*4)
135 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
136 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
137 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
138 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
139 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
140 /* ld %r11,xxx+16@l(%r12) */
141 #define BCTR 0x4e800420 /* bctr */
144 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
145 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
146 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
148 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
150 /* glink call stub instructions. We enter with the index in R0. */
151 #define GLINK_CALL_STUB_SIZE (16*4)
155 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
156 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
158 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
159 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
160 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
161 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
169 #define NOP 0x60000000
171 /* Some other nops. */
172 #define CROR_151515 0x4def7b82
173 #define CROR_313131 0x4ffffb82
175 /* .glink entries for the first 32k functions are two instructions. */
176 #define LI_R0_0 0x38000000 /* li %r0,0 */
177 #define B_DOT 0x48000000 /* b . */
179 /* After that, we need two instructions to load the index, followed by
181 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
182 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
184 /* Instructions used by the save and restore reg functions. */
185 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
186 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
187 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
188 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
189 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
190 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
191 #define LI_R12_0 0x39800000 /* li %r12,0 */
192 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
193 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
194 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
195 #define BLR 0x4e800020 /* blr */
197 /* Since .opd is an array of descriptors and each entry will end up
198 with identical R_PPC64_RELATIVE relocs, there is really no need to
199 propagate .opd relocs; The dynamic linker should be taught to
200 relocate .opd without reloc entries. */
201 #ifndef NO_OPD_RELOCS
202 #define NO_OPD_RELOCS 0
205 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
207 /* Relocation HOWTO's. */
208 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
210 static reloc_howto_type ppc64_elf_howto_raw
[] = {
211 /* This reloc does nothing. */
212 HOWTO (R_PPC64_NONE
, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE
, /* pc_relative */
218 complain_overflow_dont
, /* complain_on_overflow */
219 bfd_elf_generic_reloc
, /* special_function */
220 "R_PPC64_NONE", /* name */
221 FALSE
, /* partial_inplace */
224 FALSE
), /* pcrel_offset */
226 /* A standard 32 bit relocation. */
227 HOWTO (R_PPC64_ADDR32
, /* type */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
231 FALSE
, /* pc_relative */
233 complain_overflow_bitfield
, /* complain_on_overflow */
234 bfd_elf_generic_reloc
, /* special_function */
235 "R_PPC64_ADDR32", /* name */
236 FALSE
, /* partial_inplace */
238 0xffffffff, /* dst_mask */
239 FALSE
), /* pcrel_offset */
241 /* An absolute 26 bit branch; the lower two bits must be zero.
242 FIXME: we don't check that, we just clear them. */
243 HOWTO (R_PPC64_ADDR24
, /* type */
245 2, /* size (0 = byte, 1 = short, 2 = long) */
247 FALSE
, /* pc_relative */
249 complain_overflow_bitfield
, /* complain_on_overflow */
250 bfd_elf_generic_reloc
, /* special_function */
251 "R_PPC64_ADDR24", /* name */
252 FALSE
, /* partial_inplace */
254 0x03fffffc, /* dst_mask */
255 FALSE
), /* pcrel_offset */
257 /* A standard 16 bit relocation. */
258 HOWTO (R_PPC64_ADDR16
, /* type */
260 1, /* size (0 = byte, 1 = short, 2 = long) */
262 FALSE
, /* pc_relative */
264 complain_overflow_bitfield
, /* complain_on_overflow */
265 bfd_elf_generic_reloc
, /* special_function */
266 "R_PPC64_ADDR16", /* name */
267 FALSE
, /* partial_inplace */
269 0xffff, /* dst_mask */
270 FALSE
), /* pcrel_offset */
272 /* A 16 bit relocation without overflow. */
273 HOWTO (R_PPC64_ADDR16_LO
, /* type */
275 1, /* size (0 = byte, 1 = short, 2 = long) */
277 FALSE
, /* pc_relative */
279 complain_overflow_dont
,/* complain_on_overflow */
280 bfd_elf_generic_reloc
, /* special_function */
281 "R_PPC64_ADDR16_LO", /* name */
282 FALSE
, /* partial_inplace */
284 0xffff, /* dst_mask */
285 FALSE
), /* pcrel_offset */
287 /* Bits 16-31 of an address. */
288 HOWTO (R_PPC64_ADDR16_HI
, /* type */
290 1, /* size (0 = byte, 1 = short, 2 = long) */
292 FALSE
, /* pc_relative */
294 complain_overflow_dont
, /* complain_on_overflow */
295 bfd_elf_generic_reloc
, /* special_function */
296 "R_PPC64_ADDR16_HI", /* name */
297 FALSE
, /* partial_inplace */
299 0xffff, /* dst_mask */
300 FALSE
), /* pcrel_offset */
302 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
303 bits, treated as a signed number, is negative. */
304 HOWTO (R_PPC64_ADDR16_HA
, /* type */
306 1, /* size (0 = byte, 1 = short, 2 = long) */
308 FALSE
, /* pc_relative */
310 complain_overflow_dont
, /* complain_on_overflow */
311 ppc64_elf_ha_reloc
, /* special_function */
312 "R_PPC64_ADDR16_HA", /* name */
313 FALSE
, /* partial_inplace */
315 0xffff, /* dst_mask */
316 FALSE
), /* pcrel_offset */
318 /* An absolute 16 bit branch; the lower two bits must be zero.
319 FIXME: we don't check that, we just clear them. */
320 HOWTO (R_PPC64_ADDR14
, /* type */
322 2, /* size (0 = byte, 1 = short, 2 = long) */
324 FALSE
, /* pc_relative */
326 complain_overflow_bitfield
, /* complain_on_overflow */
327 ppc64_elf_branch_reloc
, /* special_function */
328 "R_PPC64_ADDR14", /* name */
329 FALSE
, /* partial_inplace */
331 0x0000fffc, /* dst_mask */
332 FALSE
), /* pcrel_offset */
334 /* An absolute 16 bit branch, for which bit 10 should be set to
335 indicate that the branch is expected to be taken. The lower two
336 bits must be zero. */
337 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
339 2, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE
, /* pc_relative */
343 complain_overflow_bitfield
, /* complain_on_overflow */
344 ppc64_elf_brtaken_reloc
, /* special_function */
345 "R_PPC64_ADDR14_BRTAKEN",/* name */
346 FALSE
, /* partial_inplace */
348 0x0000fffc, /* dst_mask */
349 FALSE
), /* pcrel_offset */
351 /* An absolute 16 bit branch, for which bit 10 should be set to
352 indicate that the branch is not expected to be taken. The lower
353 two bits must be zero. */
354 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
356 2, /* size (0 = byte, 1 = short, 2 = long) */
358 FALSE
, /* pc_relative */
360 complain_overflow_bitfield
, /* complain_on_overflow */
361 ppc64_elf_brtaken_reloc
, /* special_function */
362 "R_PPC64_ADDR14_BRNTAKEN",/* name */
363 FALSE
, /* partial_inplace */
365 0x0000fffc, /* dst_mask */
366 FALSE
), /* pcrel_offset */
368 /* A relative 26 bit branch; the lower two bits must be zero. */
369 HOWTO (R_PPC64_REL24
, /* type */
371 2, /* size (0 = byte, 1 = short, 2 = long) */
373 TRUE
, /* pc_relative */
375 complain_overflow_signed
, /* complain_on_overflow */
376 ppc64_elf_branch_reloc
, /* special_function */
377 "R_PPC64_REL24", /* name */
378 FALSE
, /* partial_inplace */
380 0x03fffffc, /* dst_mask */
381 TRUE
), /* pcrel_offset */
383 /* A relative 16 bit branch; the lower two bits must be zero. */
384 HOWTO (R_PPC64_REL14
, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 TRUE
, /* pc_relative */
390 complain_overflow_signed
, /* complain_on_overflow */
391 ppc64_elf_branch_reloc
, /* special_function */
392 "R_PPC64_REL14", /* name */
393 FALSE
, /* partial_inplace */
395 0x0000fffc, /* dst_mask */
396 TRUE
), /* pcrel_offset */
398 /* A relative 16 bit branch. Bit 10 should be set to indicate that
399 the branch is expected to be taken. The lower two bits must be
401 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 TRUE
, /* pc_relative */
407 complain_overflow_signed
, /* complain_on_overflow */
408 ppc64_elf_brtaken_reloc
, /* special_function */
409 "R_PPC64_REL14_BRTAKEN", /* name */
410 FALSE
, /* partial_inplace */
412 0x0000fffc, /* dst_mask */
413 TRUE
), /* pcrel_offset */
415 /* A relative 16 bit branch. Bit 10 should be set to indicate that
416 the branch is not expected to be taken. The lower two bits must
418 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
420 2, /* size (0 = byte, 1 = short, 2 = long) */
422 TRUE
, /* pc_relative */
424 complain_overflow_signed
, /* complain_on_overflow */
425 ppc64_elf_brtaken_reloc
, /* special_function */
426 "R_PPC64_REL14_BRNTAKEN",/* name */
427 FALSE
, /* partial_inplace */
429 0x0000fffc, /* dst_mask */
430 TRUE
), /* pcrel_offset */
432 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
434 HOWTO (R_PPC64_GOT16
, /* type */
436 1, /* size (0 = byte, 1 = short, 2 = long) */
438 FALSE
, /* pc_relative */
440 complain_overflow_signed
, /* complain_on_overflow */
441 ppc64_elf_unhandled_reloc
, /* special_function */
442 "R_PPC64_GOT16", /* name */
443 FALSE
, /* partial_inplace */
445 0xffff, /* dst_mask */
446 FALSE
), /* pcrel_offset */
448 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
450 HOWTO (R_PPC64_GOT16_LO
, /* type */
452 1, /* size (0 = byte, 1 = short, 2 = long) */
454 FALSE
, /* pc_relative */
456 complain_overflow_dont
, /* complain_on_overflow */
457 ppc64_elf_unhandled_reloc
, /* special_function */
458 "R_PPC64_GOT16_LO", /* name */
459 FALSE
, /* partial_inplace */
461 0xffff, /* dst_mask */
462 FALSE
), /* pcrel_offset */
464 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
466 HOWTO (R_PPC64_GOT16_HI
, /* type */
468 1, /* size (0 = byte, 1 = short, 2 = long) */
470 FALSE
, /* pc_relative */
472 complain_overflow_dont
,/* complain_on_overflow */
473 ppc64_elf_unhandled_reloc
, /* special_function */
474 "R_PPC64_GOT16_HI", /* name */
475 FALSE
, /* partial_inplace */
477 0xffff, /* dst_mask */
478 FALSE
), /* pcrel_offset */
480 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
482 HOWTO (R_PPC64_GOT16_HA
, /* type */
484 1, /* size (0 = byte, 1 = short, 2 = long) */
486 FALSE
, /* pc_relative */
488 complain_overflow_dont
,/* complain_on_overflow */
489 ppc64_elf_unhandled_reloc
, /* special_function */
490 "R_PPC64_GOT16_HA", /* name */
491 FALSE
, /* partial_inplace */
493 0xffff, /* dst_mask */
494 FALSE
), /* pcrel_offset */
496 /* This is used only by the dynamic linker. The symbol should exist
497 both in the object being run and in some shared library. The
498 dynamic linker copies the data addressed by the symbol from the
499 shared library into the object, because the object being
500 run has to have the data at some particular address. */
501 HOWTO (R_PPC64_COPY
, /* type */
503 0, /* this one is variable size */
505 FALSE
, /* pc_relative */
507 complain_overflow_dont
, /* complain_on_overflow */
508 ppc64_elf_unhandled_reloc
, /* special_function */
509 "R_PPC64_COPY", /* name */
510 FALSE
, /* partial_inplace */
513 FALSE
), /* pcrel_offset */
515 /* Like R_PPC64_ADDR64, but used when setting global offset table
517 HOWTO (R_PPC64_GLOB_DAT
, /* type */
519 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
521 FALSE
, /* pc_relative */
523 complain_overflow_dont
, /* complain_on_overflow */
524 ppc64_elf_unhandled_reloc
, /* special_function */
525 "R_PPC64_GLOB_DAT", /* name */
526 FALSE
, /* partial_inplace */
528 ONES (64), /* dst_mask */
529 FALSE
), /* pcrel_offset */
531 /* Created by the link editor. Marks a procedure linkage table
532 entry for a symbol. */
533 HOWTO (R_PPC64_JMP_SLOT
, /* type */
535 0, /* size (0 = byte, 1 = short, 2 = long) */
537 FALSE
, /* pc_relative */
539 complain_overflow_dont
, /* complain_on_overflow */
540 ppc64_elf_unhandled_reloc
, /* special_function */
541 "R_PPC64_JMP_SLOT", /* name */
542 FALSE
, /* partial_inplace */
545 FALSE
), /* pcrel_offset */
547 /* Used only by the dynamic linker. When the object is run, this
548 doubleword64 is set to the load address of the object, plus the
550 HOWTO (R_PPC64_RELATIVE
, /* type */
552 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
554 FALSE
, /* pc_relative */
556 complain_overflow_dont
, /* complain_on_overflow */
557 bfd_elf_generic_reloc
, /* special_function */
558 "R_PPC64_RELATIVE", /* name */
559 FALSE
, /* partial_inplace */
561 ONES (64), /* dst_mask */
562 FALSE
), /* pcrel_offset */
564 /* Like R_PPC64_ADDR32, but may be unaligned. */
565 HOWTO (R_PPC64_UADDR32
, /* type */
567 2, /* size (0 = byte, 1 = short, 2 = long) */
569 FALSE
, /* pc_relative */
571 complain_overflow_bitfield
, /* complain_on_overflow */
572 bfd_elf_generic_reloc
, /* special_function */
573 "R_PPC64_UADDR32", /* name */
574 FALSE
, /* partial_inplace */
576 0xffffffff, /* dst_mask */
577 FALSE
), /* pcrel_offset */
579 /* Like R_PPC64_ADDR16, but may be unaligned. */
580 HOWTO (R_PPC64_UADDR16
, /* type */
582 1, /* size (0 = byte, 1 = short, 2 = long) */
584 FALSE
, /* pc_relative */
586 complain_overflow_bitfield
, /* complain_on_overflow */
587 bfd_elf_generic_reloc
, /* special_function */
588 "R_PPC64_UADDR16", /* name */
589 FALSE
, /* partial_inplace */
591 0xffff, /* dst_mask */
592 FALSE
), /* pcrel_offset */
594 /* 32-bit PC relative. */
595 HOWTO (R_PPC64_REL32
, /* type */
597 2, /* size (0 = byte, 1 = short, 2 = long) */
599 TRUE
, /* pc_relative */
601 /* FIXME: Verify. Was complain_overflow_bitfield. */
602 complain_overflow_signed
, /* complain_on_overflow */
603 bfd_elf_generic_reloc
, /* special_function */
604 "R_PPC64_REL32", /* name */
605 FALSE
, /* partial_inplace */
607 0xffffffff, /* dst_mask */
608 TRUE
), /* pcrel_offset */
610 /* 32-bit relocation to the symbol's procedure linkage table. */
611 HOWTO (R_PPC64_PLT32
, /* type */
613 2, /* size (0 = byte, 1 = short, 2 = long) */
615 FALSE
, /* pc_relative */
617 complain_overflow_bitfield
, /* complain_on_overflow */
618 ppc64_elf_unhandled_reloc
, /* special_function */
619 "R_PPC64_PLT32", /* name */
620 FALSE
, /* partial_inplace */
622 0xffffffff, /* dst_mask */
623 FALSE
), /* pcrel_offset */
625 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
626 FIXME: R_PPC64_PLTREL32 not supported. */
627 HOWTO (R_PPC64_PLTREL32
, /* type */
629 2, /* size (0 = byte, 1 = short, 2 = long) */
631 TRUE
, /* pc_relative */
633 complain_overflow_signed
, /* complain_on_overflow */
634 bfd_elf_generic_reloc
, /* special_function */
635 "R_PPC64_PLTREL32", /* name */
636 FALSE
, /* partial_inplace */
638 0xffffffff, /* dst_mask */
639 TRUE
), /* pcrel_offset */
641 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
643 HOWTO (R_PPC64_PLT16_LO
, /* type */
645 1, /* size (0 = byte, 1 = short, 2 = long) */
647 FALSE
, /* pc_relative */
649 complain_overflow_dont
, /* complain_on_overflow */
650 ppc64_elf_unhandled_reloc
, /* special_function */
651 "R_PPC64_PLT16_LO", /* name */
652 FALSE
, /* partial_inplace */
654 0xffff, /* dst_mask */
655 FALSE
), /* pcrel_offset */
657 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
659 HOWTO (R_PPC64_PLT16_HI
, /* type */
661 1, /* size (0 = byte, 1 = short, 2 = long) */
663 FALSE
, /* pc_relative */
665 complain_overflow_dont
, /* complain_on_overflow */
666 ppc64_elf_unhandled_reloc
, /* special_function */
667 "R_PPC64_PLT16_HI", /* name */
668 FALSE
, /* partial_inplace */
670 0xffff, /* dst_mask */
671 FALSE
), /* pcrel_offset */
673 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
675 HOWTO (R_PPC64_PLT16_HA
, /* type */
677 1, /* size (0 = byte, 1 = short, 2 = long) */
679 FALSE
, /* pc_relative */
681 complain_overflow_dont
, /* complain_on_overflow */
682 ppc64_elf_unhandled_reloc
, /* special_function */
683 "R_PPC64_PLT16_HA", /* name */
684 FALSE
, /* partial_inplace */
686 0xffff, /* dst_mask */
687 FALSE
), /* pcrel_offset */
689 /* 16-bit section relative relocation. */
690 HOWTO (R_PPC64_SECTOFF
, /* type */
692 1, /* size (0 = byte, 1 = short, 2 = long) */
694 FALSE
, /* pc_relative */
696 complain_overflow_bitfield
, /* complain_on_overflow */
697 ppc64_elf_sectoff_reloc
, /* special_function */
698 "R_PPC64_SECTOFF", /* name */
699 FALSE
, /* partial_inplace */
701 0xffff, /* dst_mask */
702 FALSE
), /* pcrel_offset */
704 /* Like R_PPC64_SECTOFF, but no overflow warning. */
705 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
707 1, /* size (0 = byte, 1 = short, 2 = long) */
709 FALSE
, /* pc_relative */
711 complain_overflow_dont
, /* complain_on_overflow */
712 ppc64_elf_sectoff_reloc
, /* special_function */
713 "R_PPC64_SECTOFF_LO", /* name */
714 FALSE
, /* partial_inplace */
716 0xffff, /* dst_mask */
717 FALSE
), /* pcrel_offset */
719 /* 16-bit upper half section relative relocation. */
720 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
722 1, /* size (0 = byte, 1 = short, 2 = long) */
724 FALSE
, /* pc_relative */
726 complain_overflow_dont
, /* complain_on_overflow */
727 ppc64_elf_sectoff_reloc
, /* special_function */
728 "R_PPC64_SECTOFF_HI", /* name */
729 FALSE
, /* partial_inplace */
731 0xffff, /* dst_mask */
732 FALSE
), /* pcrel_offset */
734 /* 16-bit upper half adjusted section relative relocation. */
735 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
737 1, /* size (0 = byte, 1 = short, 2 = long) */
739 FALSE
, /* pc_relative */
741 complain_overflow_dont
, /* complain_on_overflow */
742 ppc64_elf_sectoff_ha_reloc
, /* special_function */
743 "R_PPC64_SECTOFF_HA", /* name */
744 FALSE
, /* partial_inplace */
746 0xffff, /* dst_mask */
747 FALSE
), /* pcrel_offset */
749 /* Like R_PPC64_REL24 without touching the two least significant bits. */
750 HOWTO (R_PPC64_REL30
, /* type */
752 2, /* size (0 = byte, 1 = short, 2 = long) */
754 TRUE
, /* pc_relative */
756 complain_overflow_dont
, /* complain_on_overflow */
757 bfd_elf_generic_reloc
, /* special_function */
758 "R_PPC64_REL30", /* name */
759 FALSE
, /* partial_inplace */
761 0xfffffffc, /* dst_mask */
762 TRUE
), /* pcrel_offset */
764 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
766 /* A standard 64-bit relocation. */
767 HOWTO (R_PPC64_ADDR64
, /* type */
769 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
771 FALSE
, /* pc_relative */
773 complain_overflow_dont
, /* complain_on_overflow */
774 bfd_elf_generic_reloc
, /* special_function */
775 "R_PPC64_ADDR64", /* name */
776 FALSE
, /* partial_inplace */
778 ONES (64), /* dst_mask */
779 FALSE
), /* pcrel_offset */
781 /* The bits 32-47 of an address. */
782 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
784 1, /* size (0 = byte, 1 = short, 2 = long) */
786 FALSE
, /* pc_relative */
788 complain_overflow_dont
, /* complain_on_overflow */
789 bfd_elf_generic_reloc
, /* special_function */
790 "R_PPC64_ADDR16_HIGHER", /* name */
791 FALSE
, /* partial_inplace */
793 0xffff, /* dst_mask */
794 FALSE
), /* pcrel_offset */
796 /* The bits 32-47 of an address, plus 1 if the contents of the low
797 16 bits, treated as a signed number, is negative. */
798 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
800 1, /* size (0 = byte, 1 = short, 2 = long) */
802 FALSE
, /* pc_relative */
804 complain_overflow_dont
, /* complain_on_overflow */
805 ppc64_elf_ha_reloc
, /* special_function */
806 "R_PPC64_ADDR16_HIGHERA", /* name */
807 FALSE
, /* partial_inplace */
809 0xffff, /* dst_mask */
810 FALSE
), /* pcrel_offset */
812 /* The bits 48-63 of an address. */
813 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
815 1, /* size (0 = byte, 1 = short, 2 = long) */
817 FALSE
, /* pc_relative */
819 complain_overflow_dont
, /* complain_on_overflow */
820 bfd_elf_generic_reloc
, /* special_function */
821 "R_PPC64_ADDR16_HIGHEST", /* name */
822 FALSE
, /* partial_inplace */
824 0xffff, /* dst_mask */
825 FALSE
), /* pcrel_offset */
827 /* The bits 48-63 of an address, plus 1 if the contents of the low
828 16 bits, treated as a signed number, is negative. */
829 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
831 1, /* size (0 = byte, 1 = short, 2 = long) */
833 FALSE
, /* pc_relative */
835 complain_overflow_dont
, /* complain_on_overflow */
836 ppc64_elf_ha_reloc
, /* special_function */
837 "R_PPC64_ADDR16_HIGHESTA", /* name */
838 FALSE
, /* partial_inplace */
840 0xffff, /* dst_mask */
841 FALSE
), /* pcrel_offset */
843 /* Like ADDR64, but may be unaligned. */
844 HOWTO (R_PPC64_UADDR64
, /* type */
846 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
848 FALSE
, /* pc_relative */
850 complain_overflow_dont
, /* complain_on_overflow */
851 bfd_elf_generic_reloc
, /* special_function */
852 "R_PPC64_UADDR64", /* name */
853 FALSE
, /* partial_inplace */
855 ONES (64), /* dst_mask */
856 FALSE
), /* pcrel_offset */
858 /* 64-bit relative relocation. */
859 HOWTO (R_PPC64_REL64
, /* type */
861 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
863 TRUE
, /* pc_relative */
865 complain_overflow_dont
, /* complain_on_overflow */
866 bfd_elf_generic_reloc
, /* special_function */
867 "R_PPC64_REL64", /* name */
868 FALSE
, /* partial_inplace */
870 ONES (64), /* dst_mask */
871 TRUE
), /* pcrel_offset */
873 /* 64-bit relocation to the symbol's procedure linkage table. */
874 HOWTO (R_PPC64_PLT64
, /* type */
876 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
878 FALSE
, /* pc_relative */
880 complain_overflow_dont
, /* complain_on_overflow */
881 ppc64_elf_unhandled_reloc
, /* special_function */
882 "R_PPC64_PLT64", /* name */
883 FALSE
, /* partial_inplace */
885 ONES (64), /* dst_mask */
886 FALSE
), /* pcrel_offset */
888 /* 64-bit PC relative relocation to the symbol's procedure linkage
890 /* FIXME: R_PPC64_PLTREL64 not supported. */
891 HOWTO (R_PPC64_PLTREL64
, /* type */
893 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
895 TRUE
, /* pc_relative */
897 complain_overflow_dont
, /* complain_on_overflow */
898 ppc64_elf_unhandled_reloc
, /* special_function */
899 "R_PPC64_PLTREL64", /* name */
900 FALSE
, /* partial_inplace */
902 ONES (64), /* dst_mask */
903 TRUE
), /* pcrel_offset */
905 /* 16 bit TOC-relative relocation. */
907 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
908 HOWTO (R_PPC64_TOC16
, /* type */
910 1, /* size (0 = byte, 1 = short, 2 = long) */
912 FALSE
, /* pc_relative */
914 complain_overflow_signed
, /* complain_on_overflow */
915 ppc64_elf_toc_reloc
, /* special_function */
916 "R_PPC64_TOC16", /* name */
917 FALSE
, /* partial_inplace */
919 0xffff, /* dst_mask */
920 FALSE
), /* pcrel_offset */
922 /* 16 bit TOC-relative relocation without overflow. */
924 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
925 HOWTO (R_PPC64_TOC16_LO
, /* type */
927 1, /* size (0 = byte, 1 = short, 2 = long) */
929 FALSE
, /* pc_relative */
931 complain_overflow_dont
, /* complain_on_overflow */
932 ppc64_elf_toc_reloc
, /* special_function */
933 "R_PPC64_TOC16_LO", /* name */
934 FALSE
, /* partial_inplace */
936 0xffff, /* dst_mask */
937 FALSE
), /* pcrel_offset */
939 /* 16 bit TOC-relative relocation, high 16 bits. */
941 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
942 HOWTO (R_PPC64_TOC16_HI
, /* type */
944 1, /* size (0 = byte, 1 = short, 2 = long) */
946 FALSE
, /* pc_relative */
948 complain_overflow_dont
, /* complain_on_overflow */
949 ppc64_elf_toc_reloc
, /* special_function */
950 "R_PPC64_TOC16_HI", /* name */
951 FALSE
, /* partial_inplace */
953 0xffff, /* dst_mask */
954 FALSE
), /* pcrel_offset */
956 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
957 contents of the low 16 bits, treated as a signed number, is
960 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
961 HOWTO (R_PPC64_TOC16_HA
, /* type */
963 1, /* size (0 = byte, 1 = short, 2 = long) */
965 FALSE
, /* pc_relative */
967 complain_overflow_dont
, /* complain_on_overflow */
968 ppc64_elf_toc_ha_reloc
, /* special_function */
969 "R_PPC64_TOC16_HA", /* name */
970 FALSE
, /* partial_inplace */
972 0xffff, /* dst_mask */
973 FALSE
), /* pcrel_offset */
975 /* 64-bit relocation; insert value of TOC base (.TOC.). */
977 /* R_PPC64_TOC 51 doubleword64 .TOC. */
978 HOWTO (R_PPC64_TOC
, /* type */
980 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
982 FALSE
, /* pc_relative */
984 complain_overflow_bitfield
, /* complain_on_overflow */
985 ppc64_elf_toc64_reloc
, /* special_function */
986 "R_PPC64_TOC", /* name */
987 FALSE
, /* partial_inplace */
989 ONES (64), /* dst_mask */
990 FALSE
), /* pcrel_offset */
992 /* Like R_PPC64_GOT16, but also informs the link editor that the
993 value to relocate may (!) refer to a PLT entry which the link
994 editor (a) may replace with the symbol value. If the link editor
995 is unable to fully resolve the symbol, it may (b) create a PLT
996 entry and store the address to the new PLT entry in the GOT.
997 This permits lazy resolution of function symbols at run time.
998 The link editor may also skip all of this and just (c) emit a
999 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1000 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1001 HOWTO (R_PPC64_PLTGOT16
, /* type */
1003 1, /* size (0 = byte, 1 = short, 2 = long) */
1005 FALSE
, /* pc_relative */
1007 complain_overflow_signed
, /* complain_on_overflow */
1008 ppc64_elf_unhandled_reloc
, /* special_function */
1009 "R_PPC64_PLTGOT16", /* name */
1010 FALSE
, /* partial_inplace */
1012 0xffff, /* dst_mask */
1013 FALSE
), /* pcrel_offset */
1015 /* Like R_PPC64_PLTGOT16, but without overflow. */
1016 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1017 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1019 1, /* size (0 = byte, 1 = short, 2 = long) */
1021 FALSE
, /* pc_relative */
1023 complain_overflow_dont
, /* complain_on_overflow */
1024 ppc64_elf_unhandled_reloc
, /* special_function */
1025 "R_PPC64_PLTGOT16_LO", /* name */
1026 FALSE
, /* partial_inplace */
1028 0xffff, /* dst_mask */
1029 FALSE
), /* pcrel_offset */
1031 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1032 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1033 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1034 16, /* rightshift */
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_PLTGOT16_HI", /* name */
1042 FALSE
, /* partial_inplace */
1044 0xffff, /* dst_mask */
1045 FALSE
), /* pcrel_offset */
1047 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1048 1 if the contents of the low 16 bits, treated as a signed number,
1050 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1051 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1052 16, /* rightshift */
1053 1, /* size (0 = byte, 1 = short, 2 = long) */
1055 FALSE
, /* pc_relative */
1057 complain_overflow_dont
,/* complain_on_overflow */
1058 ppc64_elf_unhandled_reloc
, /* special_function */
1059 "R_PPC64_PLTGOT16_HA", /* name */
1060 FALSE
, /* partial_inplace */
1062 0xffff, /* dst_mask */
1063 FALSE
), /* pcrel_offset */
1065 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1066 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1068 1, /* size (0 = byte, 1 = short, 2 = long) */
1070 FALSE
, /* pc_relative */
1072 complain_overflow_bitfield
, /* complain_on_overflow */
1073 bfd_elf_generic_reloc
, /* special_function */
1074 "R_PPC64_ADDR16_DS", /* name */
1075 FALSE
, /* partial_inplace */
1077 0xfffc, /* dst_mask */
1078 FALSE
), /* pcrel_offset */
1080 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1081 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1083 1, /* size (0 = byte, 1 = short, 2 = long) */
1085 FALSE
, /* pc_relative */
1087 complain_overflow_dont
,/* complain_on_overflow */
1088 bfd_elf_generic_reloc
, /* special_function */
1089 "R_PPC64_ADDR16_LO_DS",/* name */
1090 FALSE
, /* partial_inplace */
1092 0xfffc, /* dst_mask */
1093 FALSE
), /* pcrel_offset */
1095 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1096 HOWTO (R_PPC64_GOT16_DS
, /* type */
1098 1, /* size (0 = byte, 1 = short, 2 = long) */
1100 FALSE
, /* pc_relative */
1102 complain_overflow_signed
, /* complain_on_overflow */
1103 ppc64_elf_unhandled_reloc
, /* special_function */
1104 "R_PPC64_GOT16_DS", /* name */
1105 FALSE
, /* partial_inplace */
1107 0xfffc, /* dst_mask */
1108 FALSE
), /* pcrel_offset */
1110 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1111 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1113 1, /* size (0 = byte, 1 = short, 2 = long) */
1115 FALSE
, /* pc_relative */
1117 complain_overflow_dont
, /* complain_on_overflow */
1118 ppc64_elf_unhandled_reloc
, /* special_function */
1119 "R_PPC64_GOT16_LO_DS", /* name */
1120 FALSE
, /* partial_inplace */
1122 0xfffc, /* dst_mask */
1123 FALSE
), /* pcrel_offset */
1125 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1126 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1128 1, /* size (0 = byte, 1 = short, 2 = long) */
1130 FALSE
, /* pc_relative */
1132 complain_overflow_dont
, /* complain_on_overflow */
1133 ppc64_elf_unhandled_reloc
, /* special_function */
1134 "R_PPC64_PLT16_LO_DS", /* name */
1135 FALSE
, /* partial_inplace */
1137 0xfffc, /* dst_mask */
1138 FALSE
), /* pcrel_offset */
1140 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1141 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1143 1, /* size (0 = byte, 1 = short, 2 = long) */
1145 FALSE
, /* pc_relative */
1147 complain_overflow_bitfield
, /* complain_on_overflow */
1148 ppc64_elf_sectoff_reloc
, /* special_function */
1149 "R_PPC64_SECTOFF_DS", /* name */
1150 FALSE
, /* partial_inplace */
1152 0xfffc, /* dst_mask */
1153 FALSE
), /* pcrel_offset */
1155 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1156 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1158 1, /* size (0 = byte, 1 = short, 2 = long) */
1160 FALSE
, /* pc_relative */
1162 complain_overflow_dont
, /* complain_on_overflow */
1163 ppc64_elf_sectoff_reloc
, /* special_function */
1164 "R_PPC64_SECTOFF_LO_DS",/* name */
1165 FALSE
, /* partial_inplace */
1167 0xfffc, /* dst_mask */
1168 FALSE
), /* pcrel_offset */
1170 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1171 HOWTO (R_PPC64_TOC16_DS
, /* type */
1173 1, /* size (0 = byte, 1 = short, 2 = long) */
1175 FALSE
, /* pc_relative */
1177 complain_overflow_signed
, /* complain_on_overflow */
1178 ppc64_elf_toc_reloc
, /* special_function */
1179 "R_PPC64_TOC16_DS", /* name */
1180 FALSE
, /* partial_inplace */
1182 0xfffc, /* dst_mask */
1183 FALSE
), /* pcrel_offset */
1185 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1186 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1188 1, /* size (0 = byte, 1 = short, 2 = long) */
1190 FALSE
, /* pc_relative */
1192 complain_overflow_dont
, /* complain_on_overflow */
1193 ppc64_elf_toc_reloc
, /* special_function */
1194 "R_PPC64_TOC16_LO_DS", /* name */
1195 FALSE
, /* partial_inplace */
1197 0xfffc, /* dst_mask */
1198 FALSE
), /* pcrel_offset */
1200 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1201 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1202 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1204 1, /* size (0 = byte, 1 = short, 2 = long) */
1206 FALSE
, /* pc_relative */
1208 complain_overflow_signed
, /* complain_on_overflow */
1209 ppc64_elf_unhandled_reloc
, /* special_function */
1210 "R_PPC64_PLTGOT16_DS", /* name */
1211 FALSE
, /* partial_inplace */
1213 0xfffc, /* dst_mask */
1214 FALSE
), /* pcrel_offset */
1216 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1217 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1218 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1220 1, /* size (0 = byte, 1 = short, 2 = long) */
1222 FALSE
, /* pc_relative */
1224 complain_overflow_dont
, /* complain_on_overflow */
1225 ppc64_elf_unhandled_reloc
, /* special_function */
1226 "R_PPC64_PLTGOT16_LO_DS",/* name */
1227 FALSE
, /* partial_inplace */
1229 0xfffc, /* dst_mask */
1230 FALSE
), /* pcrel_offset */
1232 /* Marker reloc for TLS. */
1235 2, /* size (0 = byte, 1 = short, 2 = long) */
1237 FALSE
, /* pc_relative */
1239 complain_overflow_dont
, /* complain_on_overflow */
1240 bfd_elf_generic_reloc
, /* special_function */
1241 "R_PPC64_TLS", /* name */
1242 FALSE
, /* partial_inplace */
1245 FALSE
), /* pcrel_offset */
1247 /* Computes the load module index of the load module that contains the
1248 definition of its TLS sym. */
1249 HOWTO (R_PPC64_DTPMOD64
,
1251 4, /* size (0 = byte, 1 = short, 2 = long) */
1253 FALSE
, /* pc_relative */
1255 complain_overflow_dont
, /* complain_on_overflow */
1256 ppc64_elf_unhandled_reloc
, /* special_function */
1257 "R_PPC64_DTPMOD64", /* name */
1258 FALSE
, /* partial_inplace */
1260 ONES (64), /* dst_mask */
1261 FALSE
), /* pcrel_offset */
1263 /* Computes a dtv-relative displacement, the difference between the value
1264 of sym+add and the base address of the thread-local storage block that
1265 contains the definition of sym, minus 0x8000. */
1266 HOWTO (R_PPC64_DTPREL64
,
1268 4, /* size (0 = byte, 1 = short, 2 = long) */
1270 FALSE
, /* pc_relative */
1272 complain_overflow_dont
, /* complain_on_overflow */
1273 ppc64_elf_unhandled_reloc
, /* special_function */
1274 "R_PPC64_DTPREL64", /* name */
1275 FALSE
, /* partial_inplace */
1277 ONES (64), /* dst_mask */
1278 FALSE
), /* pcrel_offset */
1280 /* A 16 bit dtprel reloc. */
1281 HOWTO (R_PPC64_DTPREL16
,
1283 1, /* size (0 = byte, 1 = short, 2 = long) */
1285 FALSE
, /* pc_relative */
1287 complain_overflow_signed
, /* complain_on_overflow */
1288 ppc64_elf_unhandled_reloc
, /* special_function */
1289 "R_PPC64_DTPREL16", /* name */
1290 FALSE
, /* partial_inplace */
1292 0xffff, /* dst_mask */
1293 FALSE
), /* pcrel_offset */
1295 /* Like DTPREL16, but no overflow. */
1296 HOWTO (R_PPC64_DTPREL16_LO
,
1298 1, /* size (0 = byte, 1 = short, 2 = long) */
1300 FALSE
, /* pc_relative */
1302 complain_overflow_dont
, /* complain_on_overflow */
1303 ppc64_elf_unhandled_reloc
, /* special_function */
1304 "R_PPC64_DTPREL16_LO", /* name */
1305 FALSE
, /* partial_inplace */
1307 0xffff, /* dst_mask */
1308 FALSE
), /* pcrel_offset */
1310 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1311 HOWTO (R_PPC64_DTPREL16_HI
,
1312 16, /* rightshift */
1313 1, /* size (0 = byte, 1 = short, 2 = long) */
1315 FALSE
, /* pc_relative */
1317 complain_overflow_dont
, /* complain_on_overflow */
1318 ppc64_elf_unhandled_reloc
, /* special_function */
1319 "R_PPC64_DTPREL16_HI", /* name */
1320 FALSE
, /* partial_inplace */
1322 0xffff, /* dst_mask */
1323 FALSE
), /* pcrel_offset */
1325 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1326 HOWTO (R_PPC64_DTPREL16_HA
,
1327 16, /* rightshift */
1328 1, /* size (0 = byte, 1 = short, 2 = long) */
1330 FALSE
, /* pc_relative */
1332 complain_overflow_dont
, /* complain_on_overflow */
1333 ppc64_elf_unhandled_reloc
, /* special_function */
1334 "R_PPC64_DTPREL16_HA", /* name */
1335 FALSE
, /* partial_inplace */
1337 0xffff, /* dst_mask */
1338 FALSE
), /* pcrel_offset */
1340 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1341 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1342 32, /* rightshift */
1343 1, /* size (0 = byte, 1 = short, 2 = long) */
1345 FALSE
, /* pc_relative */
1347 complain_overflow_dont
, /* complain_on_overflow */
1348 ppc64_elf_unhandled_reloc
, /* special_function */
1349 "R_PPC64_DTPREL16_HIGHER", /* name */
1350 FALSE
, /* partial_inplace */
1352 0xffff, /* dst_mask */
1353 FALSE
), /* pcrel_offset */
1355 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1356 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1357 32, /* rightshift */
1358 1, /* size (0 = byte, 1 = short, 2 = long) */
1360 FALSE
, /* pc_relative */
1362 complain_overflow_dont
, /* complain_on_overflow */
1363 ppc64_elf_unhandled_reloc
, /* special_function */
1364 "R_PPC64_DTPREL16_HIGHERA", /* name */
1365 FALSE
, /* partial_inplace */
1367 0xffff, /* dst_mask */
1368 FALSE
), /* pcrel_offset */
1370 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1371 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1372 48, /* rightshift */
1373 1, /* size (0 = byte, 1 = short, 2 = long) */
1375 FALSE
, /* pc_relative */
1377 complain_overflow_dont
, /* complain_on_overflow */
1378 ppc64_elf_unhandled_reloc
, /* special_function */
1379 "R_PPC64_DTPREL16_HIGHEST", /* name */
1380 FALSE
, /* partial_inplace */
1382 0xffff, /* dst_mask */
1383 FALSE
), /* pcrel_offset */
1385 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1386 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1387 48, /* rightshift */
1388 1, /* size (0 = byte, 1 = short, 2 = long) */
1390 FALSE
, /* pc_relative */
1392 complain_overflow_dont
, /* complain_on_overflow */
1393 ppc64_elf_unhandled_reloc
, /* special_function */
1394 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1395 FALSE
, /* partial_inplace */
1397 0xffff, /* dst_mask */
1398 FALSE
), /* pcrel_offset */
1400 /* Like DTPREL16, but for insns with a DS field. */
1401 HOWTO (R_PPC64_DTPREL16_DS
,
1403 1, /* size (0 = byte, 1 = short, 2 = long) */
1405 FALSE
, /* pc_relative */
1407 complain_overflow_signed
, /* complain_on_overflow */
1408 ppc64_elf_unhandled_reloc
, /* special_function */
1409 "R_PPC64_DTPREL16_DS", /* name */
1410 FALSE
, /* partial_inplace */
1412 0xfffc, /* dst_mask */
1413 FALSE
), /* pcrel_offset */
1415 /* Like DTPREL16_DS, but no overflow. */
1416 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1418 1, /* size (0 = byte, 1 = short, 2 = long) */
1420 FALSE
, /* pc_relative */
1422 complain_overflow_dont
, /* complain_on_overflow */
1423 ppc64_elf_unhandled_reloc
, /* special_function */
1424 "R_PPC64_DTPREL16_LO_DS", /* name */
1425 FALSE
, /* partial_inplace */
1427 0xfffc, /* dst_mask */
1428 FALSE
), /* pcrel_offset */
1430 /* Computes a tp-relative displacement, the difference between the value of
1431 sym+add and the value of the thread pointer (r13). */
1432 HOWTO (R_PPC64_TPREL64
,
1434 4, /* size (0 = byte, 1 = short, 2 = long) */
1436 FALSE
, /* pc_relative */
1438 complain_overflow_dont
, /* complain_on_overflow */
1439 ppc64_elf_unhandled_reloc
, /* special_function */
1440 "R_PPC64_TPREL64", /* name */
1441 FALSE
, /* partial_inplace */
1443 ONES (64), /* dst_mask */
1444 FALSE
), /* pcrel_offset */
1446 /* A 16 bit tprel reloc. */
1447 HOWTO (R_PPC64_TPREL16
,
1449 1, /* size (0 = byte, 1 = short, 2 = long) */
1451 FALSE
, /* pc_relative */
1453 complain_overflow_signed
, /* complain_on_overflow */
1454 ppc64_elf_unhandled_reloc
, /* special_function */
1455 "R_PPC64_TPREL16", /* name */
1456 FALSE
, /* partial_inplace */
1458 0xffff, /* dst_mask */
1459 FALSE
), /* pcrel_offset */
1461 /* Like TPREL16, but no overflow. */
1462 HOWTO (R_PPC64_TPREL16_LO
,
1464 1, /* size (0 = byte, 1 = short, 2 = long) */
1466 FALSE
, /* pc_relative */
1468 complain_overflow_dont
, /* complain_on_overflow */
1469 ppc64_elf_unhandled_reloc
, /* special_function */
1470 "R_PPC64_TPREL16_LO", /* name */
1471 FALSE
, /* partial_inplace */
1473 0xffff, /* dst_mask */
1474 FALSE
), /* pcrel_offset */
1476 /* Like TPREL16_LO, but next higher group of 16 bits. */
1477 HOWTO (R_PPC64_TPREL16_HI
,
1478 16, /* rightshift */
1479 1, /* size (0 = byte, 1 = short, 2 = long) */
1481 FALSE
, /* pc_relative */
1483 complain_overflow_dont
, /* complain_on_overflow */
1484 ppc64_elf_unhandled_reloc
, /* special_function */
1485 "R_PPC64_TPREL16_HI", /* name */
1486 FALSE
, /* partial_inplace */
1488 0xffff, /* dst_mask */
1489 FALSE
), /* pcrel_offset */
1491 /* Like TPREL16_HI, but adjust for low 16 bits. */
1492 HOWTO (R_PPC64_TPREL16_HA
,
1493 16, /* rightshift */
1494 1, /* size (0 = byte, 1 = short, 2 = long) */
1496 FALSE
, /* pc_relative */
1498 complain_overflow_dont
, /* complain_on_overflow */
1499 ppc64_elf_unhandled_reloc
, /* special_function */
1500 "R_PPC64_TPREL16_HA", /* name */
1501 FALSE
, /* partial_inplace */
1503 0xffff, /* dst_mask */
1504 FALSE
), /* pcrel_offset */
1506 /* Like TPREL16_HI, but next higher group of 16 bits. */
1507 HOWTO (R_PPC64_TPREL16_HIGHER
,
1508 32, /* rightshift */
1509 1, /* size (0 = byte, 1 = short, 2 = long) */
1511 FALSE
, /* pc_relative */
1513 complain_overflow_dont
, /* complain_on_overflow */
1514 ppc64_elf_unhandled_reloc
, /* special_function */
1515 "R_PPC64_TPREL16_HIGHER", /* name */
1516 FALSE
, /* partial_inplace */
1518 0xffff, /* dst_mask */
1519 FALSE
), /* pcrel_offset */
1521 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1522 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1523 32, /* rightshift */
1524 1, /* size (0 = byte, 1 = short, 2 = long) */
1526 FALSE
, /* pc_relative */
1528 complain_overflow_dont
, /* complain_on_overflow */
1529 ppc64_elf_unhandled_reloc
, /* special_function */
1530 "R_PPC64_TPREL16_HIGHERA", /* name */
1531 FALSE
, /* partial_inplace */
1533 0xffff, /* dst_mask */
1534 FALSE
), /* pcrel_offset */
1536 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1537 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1538 48, /* rightshift */
1539 1, /* size (0 = byte, 1 = short, 2 = long) */
1541 FALSE
, /* pc_relative */
1543 complain_overflow_dont
, /* complain_on_overflow */
1544 ppc64_elf_unhandled_reloc
, /* special_function */
1545 "R_PPC64_TPREL16_HIGHEST", /* name */
1546 FALSE
, /* partial_inplace */
1548 0xffff, /* dst_mask */
1549 FALSE
), /* pcrel_offset */
1551 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1552 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1553 48, /* rightshift */
1554 1, /* size (0 = byte, 1 = short, 2 = long) */
1556 FALSE
, /* pc_relative */
1558 complain_overflow_dont
, /* complain_on_overflow */
1559 ppc64_elf_unhandled_reloc
, /* special_function */
1560 "R_PPC64_TPREL16_HIGHESTA", /* name */
1561 FALSE
, /* partial_inplace */
1563 0xffff, /* dst_mask */
1564 FALSE
), /* pcrel_offset */
1566 /* Like TPREL16, but for insns with a DS field. */
1567 HOWTO (R_PPC64_TPREL16_DS
,
1569 1, /* size (0 = byte, 1 = short, 2 = long) */
1571 FALSE
, /* pc_relative */
1573 complain_overflow_signed
, /* complain_on_overflow */
1574 ppc64_elf_unhandled_reloc
, /* special_function */
1575 "R_PPC64_TPREL16_DS", /* name */
1576 FALSE
, /* partial_inplace */
1578 0xfffc, /* dst_mask */
1579 FALSE
), /* pcrel_offset */
1581 /* Like TPREL16_DS, but no overflow. */
1582 HOWTO (R_PPC64_TPREL16_LO_DS
,
1584 1, /* size (0 = byte, 1 = short, 2 = long) */
1586 FALSE
, /* pc_relative */
1588 complain_overflow_dont
, /* complain_on_overflow */
1589 ppc64_elf_unhandled_reloc
, /* special_function */
1590 "R_PPC64_TPREL16_LO_DS", /* name */
1591 FALSE
, /* partial_inplace */
1593 0xfffc, /* dst_mask */
1594 FALSE
), /* pcrel_offset */
1596 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1597 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1598 to the first entry relative to the TOC base (r2). */
1599 HOWTO (R_PPC64_GOT_TLSGD16
,
1601 1, /* size (0 = byte, 1 = short, 2 = long) */
1603 FALSE
, /* pc_relative */
1605 complain_overflow_signed
, /* complain_on_overflow */
1606 ppc64_elf_unhandled_reloc
, /* special_function */
1607 "R_PPC64_GOT_TLSGD16", /* name */
1608 FALSE
, /* partial_inplace */
1610 0xffff, /* dst_mask */
1611 FALSE
), /* pcrel_offset */
1613 /* Like GOT_TLSGD16, but no overflow. */
1614 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1616 1, /* size (0 = byte, 1 = short, 2 = long) */
1618 FALSE
, /* pc_relative */
1620 complain_overflow_dont
, /* complain_on_overflow */
1621 ppc64_elf_unhandled_reloc
, /* special_function */
1622 "R_PPC64_GOT_TLSGD16_LO", /* name */
1623 FALSE
, /* partial_inplace */
1625 0xffff, /* dst_mask */
1626 FALSE
), /* pcrel_offset */
1628 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1629 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1630 16, /* rightshift */
1631 1, /* size (0 = byte, 1 = short, 2 = long) */
1633 FALSE
, /* pc_relative */
1635 complain_overflow_dont
, /* complain_on_overflow */
1636 ppc64_elf_unhandled_reloc
, /* special_function */
1637 "R_PPC64_GOT_TLSGD16_HI", /* name */
1638 FALSE
, /* partial_inplace */
1640 0xffff, /* dst_mask */
1641 FALSE
), /* pcrel_offset */
1643 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1644 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1645 16, /* rightshift */
1646 1, /* size (0 = byte, 1 = short, 2 = long) */
1648 FALSE
, /* pc_relative */
1650 complain_overflow_dont
, /* complain_on_overflow */
1651 ppc64_elf_unhandled_reloc
, /* special_function */
1652 "R_PPC64_GOT_TLSGD16_HA", /* name */
1653 FALSE
, /* partial_inplace */
1655 0xffff, /* dst_mask */
1656 FALSE
), /* pcrel_offset */
1658 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1659 with values (sym+add)@dtpmod and zero, and computes the offset to the
1660 first entry relative to the TOC base (r2). */
1661 HOWTO (R_PPC64_GOT_TLSLD16
,
1663 1, /* size (0 = byte, 1 = short, 2 = long) */
1665 FALSE
, /* pc_relative */
1667 complain_overflow_signed
, /* complain_on_overflow */
1668 ppc64_elf_unhandled_reloc
, /* special_function */
1669 "R_PPC64_GOT_TLSLD16", /* name */
1670 FALSE
, /* partial_inplace */
1672 0xffff, /* dst_mask */
1673 FALSE
), /* pcrel_offset */
1675 /* Like GOT_TLSLD16, but no overflow. */
1676 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1678 1, /* size (0 = byte, 1 = short, 2 = long) */
1680 FALSE
, /* pc_relative */
1682 complain_overflow_dont
, /* complain_on_overflow */
1683 ppc64_elf_unhandled_reloc
, /* special_function */
1684 "R_PPC64_GOT_TLSLD16_LO", /* name */
1685 FALSE
, /* partial_inplace */
1687 0xffff, /* dst_mask */
1688 FALSE
), /* pcrel_offset */
1690 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1691 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1692 16, /* rightshift */
1693 1, /* size (0 = byte, 1 = short, 2 = long) */
1695 FALSE
, /* pc_relative */
1697 complain_overflow_dont
, /* complain_on_overflow */
1698 ppc64_elf_unhandled_reloc
, /* special_function */
1699 "R_PPC64_GOT_TLSLD16_HI", /* name */
1700 FALSE
, /* partial_inplace */
1702 0xffff, /* dst_mask */
1703 FALSE
), /* pcrel_offset */
1705 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1706 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1707 16, /* rightshift */
1708 1, /* size (0 = byte, 1 = short, 2 = long) */
1710 FALSE
, /* pc_relative */
1712 complain_overflow_dont
, /* complain_on_overflow */
1713 ppc64_elf_unhandled_reloc
, /* special_function */
1714 "R_PPC64_GOT_TLSLD16_HA", /* name */
1715 FALSE
, /* partial_inplace */
1717 0xffff, /* dst_mask */
1718 FALSE
), /* pcrel_offset */
1720 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1721 the offset to the entry relative to the TOC base (r2). */
1722 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1724 1, /* size (0 = byte, 1 = short, 2 = long) */
1726 FALSE
, /* pc_relative */
1728 complain_overflow_signed
, /* complain_on_overflow */
1729 ppc64_elf_unhandled_reloc
, /* special_function */
1730 "R_PPC64_GOT_DTPREL16_DS", /* name */
1731 FALSE
, /* partial_inplace */
1733 0xfffc, /* dst_mask */
1734 FALSE
), /* pcrel_offset */
1736 /* Like GOT_DTPREL16_DS, but no overflow. */
1737 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1739 1, /* size (0 = byte, 1 = short, 2 = long) */
1741 FALSE
, /* pc_relative */
1743 complain_overflow_dont
, /* complain_on_overflow */
1744 ppc64_elf_unhandled_reloc
, /* special_function */
1745 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1746 FALSE
, /* partial_inplace */
1748 0xfffc, /* dst_mask */
1749 FALSE
), /* pcrel_offset */
1751 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1752 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1753 16, /* rightshift */
1754 1, /* size (0 = byte, 1 = short, 2 = long) */
1756 FALSE
, /* pc_relative */
1758 complain_overflow_dont
, /* complain_on_overflow */
1759 ppc64_elf_unhandled_reloc
, /* special_function */
1760 "R_PPC64_GOT_DTPREL16_HI", /* name */
1761 FALSE
, /* partial_inplace */
1763 0xffff, /* dst_mask */
1764 FALSE
), /* pcrel_offset */
1766 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1767 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1768 16, /* rightshift */
1769 1, /* size (0 = byte, 1 = short, 2 = long) */
1771 FALSE
, /* pc_relative */
1773 complain_overflow_dont
, /* complain_on_overflow */
1774 ppc64_elf_unhandled_reloc
, /* special_function */
1775 "R_PPC64_GOT_DTPREL16_HA", /* name */
1776 FALSE
, /* partial_inplace */
1778 0xffff, /* dst_mask */
1779 FALSE
), /* pcrel_offset */
1781 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1782 offset to the entry relative to the TOC base (r2). */
1783 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1785 1, /* size (0 = byte, 1 = short, 2 = long) */
1787 FALSE
, /* pc_relative */
1789 complain_overflow_signed
, /* complain_on_overflow */
1790 ppc64_elf_unhandled_reloc
, /* special_function */
1791 "R_PPC64_GOT_TPREL16_DS", /* name */
1792 FALSE
, /* partial_inplace */
1794 0xfffc, /* dst_mask */
1795 FALSE
), /* pcrel_offset */
1797 /* Like GOT_TPREL16_DS, but no overflow. */
1798 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1800 1, /* size (0 = byte, 1 = short, 2 = long) */
1802 FALSE
, /* pc_relative */
1804 complain_overflow_dont
, /* complain_on_overflow */
1805 ppc64_elf_unhandled_reloc
, /* special_function */
1806 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1807 FALSE
, /* partial_inplace */
1809 0xfffc, /* dst_mask */
1810 FALSE
), /* pcrel_offset */
1812 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1813 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1814 16, /* rightshift */
1815 1, /* size (0 = byte, 1 = short, 2 = long) */
1817 FALSE
, /* pc_relative */
1819 complain_overflow_dont
, /* complain_on_overflow */
1820 ppc64_elf_unhandled_reloc
, /* special_function */
1821 "R_PPC64_GOT_TPREL16_HI", /* name */
1822 FALSE
, /* partial_inplace */
1824 0xffff, /* dst_mask */
1825 FALSE
), /* pcrel_offset */
1827 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1828 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1829 16, /* rightshift */
1830 1, /* size (0 = byte, 1 = short, 2 = long) */
1832 FALSE
, /* pc_relative */
1834 complain_overflow_dont
, /* complain_on_overflow */
1835 ppc64_elf_unhandled_reloc
, /* special_function */
1836 "R_PPC64_GOT_TPREL16_HA", /* name */
1837 FALSE
, /* partial_inplace */
1839 0xffff, /* dst_mask */
1840 FALSE
), /* pcrel_offset */
1842 /* GNU extension to record C++ vtable hierarchy. */
1843 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1845 0, /* size (0 = byte, 1 = short, 2 = long) */
1847 FALSE
, /* pc_relative */
1849 complain_overflow_dont
, /* complain_on_overflow */
1850 NULL
, /* special_function */
1851 "R_PPC64_GNU_VTINHERIT", /* name */
1852 FALSE
, /* partial_inplace */
1855 FALSE
), /* pcrel_offset */
1857 /* GNU extension to record C++ vtable member usage. */
1858 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1860 0, /* size (0 = byte, 1 = short, 2 = long) */
1862 FALSE
, /* pc_relative */
1864 complain_overflow_dont
, /* complain_on_overflow */
1865 NULL
, /* special_function */
1866 "R_PPC64_GNU_VTENTRY", /* name */
1867 FALSE
, /* partial_inplace */
1870 FALSE
), /* pcrel_offset */
1874 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
1878 ppc_howto_init (void)
1880 unsigned int i
, type
;
1883 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
1886 type
= ppc64_elf_howto_raw
[i
].type
;
1887 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
1888 / sizeof (ppc64_elf_howto_table
[0])));
1889 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
1893 static reloc_howto_type
*
1894 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
1895 bfd_reloc_code_real_type code
)
1897 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
1899 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
1900 /* Initialize howto table if needed. */
1908 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
1910 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
1912 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
1914 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
1916 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
1918 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
1920 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
1922 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
1924 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
1926 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
1928 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
1930 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
1932 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
1934 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
1936 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
1938 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
1940 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
1942 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
1944 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
1946 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
1948 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
1950 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
1952 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
1954 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
1956 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
1958 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
1960 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
1962 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
1964 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
1966 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
1968 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
1970 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
1972 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
1974 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
1976 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
1978 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
1980 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
1982 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
1984 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
1986 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
1988 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
1990 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
1992 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
1994 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
1996 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
1998 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2000 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2002 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2004 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2006 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2008 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2010 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2012 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2014 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2016 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2018 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2020 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2022 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2024 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2026 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2028 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2030 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2032 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2034 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2036 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2038 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2040 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2042 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2044 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2046 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2048 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2050 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2052 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2054 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2056 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2058 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2060 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2062 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2064 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2066 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2068 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2070 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2072 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2074 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2076 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2078 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2080 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2082 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2084 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2086 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2088 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2090 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2092 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2094 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2096 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2098 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2100 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2102 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2104 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2106 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2108 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2112 return ppc64_elf_howto_table
[r
];
2115 static reloc_howto_type
*
2116 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2122 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2124 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2125 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2126 return &ppc64_elf_howto_raw
[i
];
2131 /* Set the howto pointer for a PowerPC ELF reloc. */
2134 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2135 Elf_Internal_Rela
*dst
)
2139 /* Initialize howto table if needed. */
2140 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2143 type
= ELF64_R_TYPE (dst
->r_info
);
2144 if (type
>= (sizeof (ppc64_elf_howto_table
)
2145 / sizeof (ppc64_elf_howto_table
[0])))
2147 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2149 type
= R_PPC64_NONE
;
2151 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2154 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2156 static bfd_reloc_status_type
2157 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2158 void *data
, asection
*input_section
,
2159 bfd
*output_bfd
, char **error_message
)
2161 /* If this is a relocatable link (output_bfd test tells us), just
2162 call the generic function. Any adjustment will be done at final
2164 if (output_bfd
!= NULL
)
2165 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2166 input_section
, output_bfd
, error_message
);
2168 /* Adjust the addend for sign extension of the low 16 bits.
2169 We won't actually be using the low 16 bits, so trashing them
2171 reloc_entry
->addend
+= 0x8000;
2172 return bfd_reloc_continue
;
2175 static bfd_reloc_status_type
2176 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2177 void *data
, asection
*input_section
,
2178 bfd
*output_bfd
, char **error_message
)
2180 if (output_bfd
!= NULL
)
2181 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2182 input_section
, output_bfd
, error_message
);
2184 if (strcmp (symbol
->section
->name
, ".opd") == 0
2185 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2187 bfd_vma dest
= opd_entry_value (symbol
->section
,
2188 symbol
->value
+ reloc_entry
->addend
,
2190 if (dest
!= (bfd_vma
) -1)
2191 reloc_entry
->addend
= dest
- (symbol
->value
2192 + symbol
->section
->output_section
->vma
2193 + symbol
->section
->output_offset
);
2195 return bfd_reloc_continue
;
2198 static bfd_reloc_status_type
2199 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2200 void *data
, asection
*input_section
,
2201 bfd
*output_bfd
, char **error_message
)
2204 enum elf_ppc64_reloc_type r_type
;
2205 bfd_size_type octets
;
2206 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2207 bfd_boolean is_power4
= FALSE
;
2209 /* If this is a relocatable link (output_bfd test tells us), just
2210 call the generic function. Any adjustment will be done at final
2212 if (output_bfd
!= NULL
)
2213 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2214 input_section
, output_bfd
, error_message
);
2216 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2217 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2218 insn
&= ~(0x01 << 21);
2219 r_type
= reloc_entry
->howto
->type
;
2220 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2221 || r_type
== R_PPC64_REL14_BRTAKEN
)
2222 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2226 /* Set 'a' bit. This is 0b00010 in BO field for branch
2227 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2228 for branch on CTR insns (BO == 1a00t or 1a01t). */
2229 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2231 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2241 if (!bfd_is_com_section (symbol
->section
))
2242 target
= symbol
->value
;
2243 target
+= symbol
->section
->output_section
->vma
;
2244 target
+= symbol
->section
->output_offset
;
2245 target
+= reloc_entry
->addend
;
2247 from
= (reloc_entry
->address
2248 + input_section
->output_offset
2249 + input_section
->output_section
->vma
);
2251 /* Invert 'y' bit if not the default. */
2252 if ((bfd_signed_vma
) (target
- from
) < 0)
2255 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2257 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2258 input_section
, output_bfd
, error_message
);
2261 static bfd_reloc_status_type
2262 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2263 void *data
, asection
*input_section
,
2264 bfd
*output_bfd
, char **error_message
)
2266 /* If this is a relocatable link (output_bfd test tells us), just
2267 call the generic function. Any adjustment will be done at final
2269 if (output_bfd
!= NULL
)
2270 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2271 input_section
, output_bfd
, error_message
);
2273 /* Subtract the symbol section base address. */
2274 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2275 return bfd_reloc_continue
;
2278 static bfd_reloc_status_type
2279 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2280 void *data
, asection
*input_section
,
2281 bfd
*output_bfd
, char **error_message
)
2283 /* If this is a relocatable link (output_bfd test tells us), just
2284 call the generic function. Any adjustment will be done at final
2286 if (output_bfd
!= NULL
)
2287 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2288 input_section
, output_bfd
, error_message
);
2290 /* Subtract the symbol section base address. */
2291 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2293 /* Adjust the addend for sign extension of the low 16 bits. */
2294 reloc_entry
->addend
+= 0x8000;
2295 return bfd_reloc_continue
;
2298 static bfd_reloc_status_type
2299 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2300 void *data
, asection
*input_section
,
2301 bfd
*output_bfd
, char **error_message
)
2305 /* If this is a relocatable link (output_bfd test tells us), just
2306 call the generic function. Any adjustment will be done at final
2308 if (output_bfd
!= NULL
)
2309 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2310 input_section
, output_bfd
, error_message
);
2312 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2314 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2316 /* Subtract the TOC base address. */
2317 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2318 return bfd_reloc_continue
;
2321 static bfd_reloc_status_type
2322 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2323 void *data
, asection
*input_section
,
2324 bfd
*output_bfd
, char **error_message
)
2328 /* If this is a relocatable link (output_bfd test tells us), just
2329 call the generic function. Any adjustment will be done at final
2331 if (output_bfd
!= NULL
)
2332 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2333 input_section
, output_bfd
, error_message
);
2335 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2337 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2339 /* Subtract the TOC base address. */
2340 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2342 /* Adjust the addend for sign extension of the low 16 bits. */
2343 reloc_entry
->addend
+= 0x8000;
2344 return bfd_reloc_continue
;
2347 static bfd_reloc_status_type
2348 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2349 void *data
, asection
*input_section
,
2350 bfd
*output_bfd
, char **error_message
)
2353 bfd_size_type octets
;
2355 /* If this is a relocatable link (output_bfd test tells us), just
2356 call the generic function. Any adjustment will be done at final
2358 if (output_bfd
!= NULL
)
2359 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2360 input_section
, output_bfd
, error_message
);
2362 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2364 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2366 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2367 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2368 return bfd_reloc_ok
;
2371 static bfd_reloc_status_type
2372 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2373 void *data
, asection
*input_section
,
2374 bfd
*output_bfd
, char **error_message
)
2376 /* If this is a relocatable link (output_bfd test tells us), just
2377 call the generic function. Any adjustment will be done at final
2379 if (output_bfd
!= NULL
)
2380 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2381 input_section
, output_bfd
, error_message
);
2383 if (error_message
!= NULL
)
2385 static char buf
[60];
2386 sprintf (buf
, "generic linker can't handle %s",
2387 reloc_entry
->howto
->name
);
2388 *error_message
= buf
;
2390 return bfd_reloc_dangerous
;
2393 struct ppc64_elf_obj_tdata
2395 struct elf_obj_tdata elf
;
2397 /* Shortcuts to dynamic linker sections. */
2401 /* Used during garbage collection. We attach global symbols defined
2402 on removed .opd entries to this section so that the sym is removed. */
2403 asection
*deleted_section
;
2405 /* TLS local dynamic got entry handling. Suppose for multiple GOT
2406 sections means we potentially need one of these for each input bfd. */
2408 bfd_signed_vma refcount
;
2412 /* A copy of relocs before they are modified for --emit-relocs. */
2413 Elf_Internal_Rela
*opd_relocs
;
2416 #define ppc64_elf_tdata(bfd) \
2417 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2419 #define ppc64_tlsld_got(bfd) \
2420 (&ppc64_elf_tdata (bfd)->tlsld_got)
2422 /* Override the generic function because we store some extras. */
2425 ppc64_elf_mkobject (bfd
*abfd
)
2427 if (abfd
->tdata
.any
== NULL
)
2429 bfd_size_type amt
= sizeof (struct ppc64_elf_obj_tdata
);
2430 abfd
->tdata
.any
= bfd_zalloc (abfd
, amt
);
2431 if (abfd
->tdata
.any
== NULL
)
2434 return bfd_elf_mkobject (abfd
);
2437 /* Return 1 if target is one of ours. */
2440 is_ppc64_elf_target (const struct bfd_target
*targ
)
2442 extern const bfd_target bfd_elf64_powerpc_vec
;
2443 extern const bfd_target bfd_elf64_powerpcle_vec
;
2445 return targ
== &bfd_elf64_powerpc_vec
|| targ
== &bfd_elf64_powerpcle_vec
;
2448 /* Fix bad default arch selected for a 64 bit input bfd when the
2449 default is 32 bit. */
2452 ppc64_elf_object_p (bfd
*abfd
)
2454 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2456 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2458 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2460 /* Relies on arch after 32 bit default being 64 bit default. */
2461 abfd
->arch_info
= abfd
->arch_info
->next
;
2462 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2468 /* Support for core dump NOTE sections. */
2471 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2473 size_t offset
, size
;
2475 if (note
->descsz
!= 504)
2479 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2482 elf_tdata (abfd
)->core_pid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2488 /* Make a ".reg/999" section. */
2489 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2490 size
, note
->descpos
+ offset
);
2494 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2496 if (note
->descsz
!= 136)
2499 elf_tdata (abfd
)->core_program
2500 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2501 elf_tdata (abfd
)->core_command
2502 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2508 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2521 va_start (ap
, note_type
);
2522 memset (data
, 0, 40);
2523 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2524 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2526 return elfcore_write_note (abfd
, buf
, bufsiz
,
2527 "CORE", note_type
, data
, sizeof (data
));
2538 va_start (ap
, note_type
);
2539 memset (data
, 0, 112);
2540 pid
= va_arg (ap
, long);
2541 bfd_put_32 (abfd
, pid
, data
+ 32);
2542 cursig
= va_arg (ap
, int);
2543 bfd_put_16 (abfd
, cursig
, data
+ 12);
2544 greg
= va_arg (ap
, const void *);
2545 memcpy (data
+ 112, greg
, 384);
2546 memset (data
+ 496, 0, 8);
2548 return elfcore_write_note (abfd
, buf
, bufsiz
,
2549 "CORE", note_type
, data
, sizeof (data
));
2554 /* Merge backend specific data from an object file to the output
2555 object file when linking. */
2558 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2560 /* Check if we have the same endianess. */
2561 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2562 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2563 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2567 if (bfd_big_endian (ibfd
))
2568 msg
= _("%B: compiled for a big endian system "
2569 "and target is little endian");
2571 msg
= _("%B: compiled for a little endian system "
2572 "and target is big endian");
2574 (*_bfd_error_handler
) (msg
, ibfd
);
2576 bfd_set_error (bfd_error_wrong_format
);
2583 /* Add extra PPC sections. */
2585 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2587 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2588 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2589 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2590 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2591 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2592 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2593 { NULL
, 0, 0, 0, 0 }
2596 enum _ppc64_sec_type
{
2602 struct _ppc64_elf_section_data
2604 struct bfd_elf_section_data elf
;
2606 /* An array with one entry for each opd function descriptor. */
2609 /* Points to the function code section for local opd entries. */
2610 asection
**opd_func_sec
;
2611 /* After editing .opd, adjust references to opd local syms. */
2614 /* An array for toc sections, indexed by offset/8.
2615 Specifies the relocation symbol index used at a given toc offset. */
2619 enum _ppc64_sec_type sec_type
:2;
2621 /* Flag set when small branches are detected. Used to
2622 select suitable defaults for the stub group size. */
2623 unsigned int has_14bit_branch
:1;
2626 #define ppc64_elf_section_data(sec) \
2627 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2630 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2632 if (!sec
->used_by_bfd
)
2634 struct _ppc64_elf_section_data
*sdata
;
2635 bfd_size_type amt
= sizeof (*sdata
);
2637 sdata
= bfd_zalloc (abfd
, amt
);
2640 sec
->used_by_bfd
= sdata
;
2643 return _bfd_elf_new_section_hook (abfd
, sec
);
2647 get_opd_info (asection
* sec
)
2650 && ppc64_elf_section_data (sec
) != NULL
2651 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2652 return ppc64_elf_section_data (sec
)->u
.opd_adjust
;
2656 /* Parameters for the qsort hook. */
2657 static asection
*synthetic_opd
;
2658 static bfd_boolean synthetic_relocatable
;
2660 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2663 compare_symbols (const void *ap
, const void *bp
)
2665 const asymbol
*a
= * (const asymbol
**) ap
;
2666 const asymbol
*b
= * (const asymbol
**) bp
;
2668 /* Section symbols first. */
2669 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2671 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2674 /* then .opd symbols. */
2675 if (a
->section
== synthetic_opd
&& b
->section
!= synthetic_opd
)
2677 if (a
->section
!= synthetic_opd
&& b
->section
== synthetic_opd
)
2680 /* then other code symbols. */
2681 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2682 == (SEC_CODE
| SEC_ALLOC
)
2683 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2684 != (SEC_CODE
| SEC_ALLOC
))
2687 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2688 != (SEC_CODE
| SEC_ALLOC
)
2689 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2690 == (SEC_CODE
| SEC_ALLOC
))
2693 if (synthetic_relocatable
)
2695 if (a
->section
->id
< b
->section
->id
)
2698 if (a
->section
->id
> b
->section
->id
)
2702 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2705 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2708 /* For syms with the same value, prefer strong dynamic global function
2709 syms over other syms. */
2710 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2713 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2716 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2719 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2722 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2725 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2728 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2731 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2737 /* Search SYMS for a symbol of the given VALUE. */
2740 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2748 mid
= (lo
+ hi
) >> 1;
2749 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2751 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2761 mid
= (lo
+ hi
) >> 1;
2762 if (syms
[mid
]->section
->id
< id
)
2764 else if (syms
[mid
]->section
->id
> id
)
2766 else if (syms
[mid
]->value
< value
)
2768 else if (syms
[mid
]->value
> value
)
2777 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2781 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2782 long static_count
, asymbol
**static_syms
,
2783 long dyn_count
, asymbol
**dyn_syms
,
2790 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2792 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2797 opd
= bfd_get_section_by_name (abfd
, ".opd");
2801 symcount
= static_count
;
2803 symcount
+= dyn_count
;
2807 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2811 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2813 /* Use both symbol tables. */
2814 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2815 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2817 else if (!relocatable
&& static_count
== 0)
2818 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2820 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2822 synthetic_opd
= opd
;
2823 synthetic_relocatable
= relocatable
;
2824 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2826 if (!relocatable
&& symcount
> 1)
2829 /* Trim duplicate syms, since we may have merged the normal and
2830 dynamic symbols. Actually, we only care about syms that have
2831 different values, so trim any with the same value. */
2832 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2833 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
2834 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
2835 syms
[j
++] = syms
[i
];
2840 if (syms
[i
]->section
== opd
)
2844 for (; i
< symcount
; ++i
)
2845 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2846 != (SEC_CODE
| SEC_ALLOC
))
2847 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2851 for (; i
< symcount
; ++i
)
2852 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
2856 for (; i
< symcount
; ++i
)
2857 if (syms
[i
]->section
!= opd
)
2861 for (; i
< symcount
; ++i
)
2862 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2863 != (SEC_CODE
| SEC_ALLOC
))
2868 if (opdsymend
== secsymend
)
2873 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
2878 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
2879 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
2883 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
2890 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2894 while (r
< opd
->relocation
+ relcount
2895 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2898 if (r
== opd
->relocation
+ relcount
)
2901 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2904 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2907 sym
= *r
->sym_ptr_ptr
;
2908 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2909 sym
->section
->id
, sym
->value
+ r
->addend
))
2912 size
+= sizeof (asymbol
);
2913 size
+= strlen (syms
[i
]->name
) + 2;
2917 s
= *ret
= bfd_malloc (size
);
2924 names
= (char *) (s
+ count
);
2926 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
2930 while (r
< opd
->relocation
+ relcount
2931 && r
->address
< syms
[i
]->value
+ opd
->vma
)
2934 if (r
== opd
->relocation
+ relcount
)
2937 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
2940 if (r
->howto
->type
!= R_PPC64_ADDR64
)
2943 sym
= *r
->sym_ptr_ptr
;
2944 if (!sym_exists_at (syms
, opdsymend
, symcount
,
2945 sym
->section
->id
, sym
->value
+ r
->addend
))
2950 s
->section
= sym
->section
;
2951 s
->value
= sym
->value
+ r
->addend
;
2954 len
= strlen (syms
[i
]->name
);
2955 memcpy (names
, syms
[i
]->name
, len
+ 1);
2966 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
2970 free_contents_and_exit
:
2978 for (i
= secsymend
; i
< opdsymend
; ++i
)
2982 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
2983 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
2986 size
+= sizeof (asymbol
);
2987 size
+= strlen (syms
[i
]->name
) + 2;
2991 s
= *ret
= bfd_malloc (size
);
2993 goto free_contents_and_exit
;
2995 names
= (char *) (s
+ count
);
2997 for (i
= secsymend
; i
< opdsymend
; ++i
)
3001 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3002 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3006 asection
*sec
= abfd
->sections
;
3013 long mid
= (lo
+ hi
) >> 1;
3014 if (syms
[mid
]->section
->vma
< ent
)
3016 else if (syms
[mid
]->section
->vma
> ent
)
3020 sec
= syms
[mid
]->section
;
3025 if (lo
>= hi
&& lo
> codesecsym
)
3026 sec
= syms
[lo
- 1]->section
;
3028 for (; sec
!= NULL
; sec
= sec
->next
)
3032 if ((sec
->flags
& SEC_ALLOC
) == 0
3033 || (sec
->flags
& SEC_LOAD
) == 0)
3035 if ((sec
->flags
& SEC_CODE
) != 0)
3038 s
->value
= ent
- s
->section
->vma
;
3041 len
= strlen (syms
[i
]->name
);
3042 memcpy (names
, syms
[i
]->name
, len
+ 1);
3055 /* The following functions are specific to the ELF linker, while
3056 functions above are used generally. Those named ppc64_elf_* are
3057 called by the main ELF linker code. They appear in this file more
3058 or less in the order in which they are called. eg.
3059 ppc64_elf_check_relocs is called early in the link process,
3060 ppc64_elf_finish_dynamic_sections is one of the last functions
3063 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3064 functions have both a function code symbol and a function descriptor
3065 symbol. A call to foo in a relocatable object file looks like:
3072 The function definition in another object file might be:
3076 . .quad .TOC.@tocbase
3082 When the linker resolves the call during a static link, the branch
3083 unsurprisingly just goes to .foo and the .opd information is unused.
3084 If the function definition is in a shared library, things are a little
3085 different: The call goes via a plt call stub, the opd information gets
3086 copied to the plt, and the linker patches the nop.
3094 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3095 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3096 . std 2,40(1) # this is the general idea
3104 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3106 The "reloc ()" notation is supposed to indicate that the linker emits
3107 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3110 What are the difficulties here? Well, firstly, the relocations
3111 examined by the linker in check_relocs are against the function code
3112 sym .foo, while the dynamic relocation in the plt is emitted against
3113 the function descriptor symbol, foo. Somewhere along the line, we need
3114 to carefully copy dynamic link information from one symbol to the other.
3115 Secondly, the generic part of the elf linker will make .foo a dynamic
3116 symbol as is normal for most other backends. We need foo dynamic
3117 instead, at least for an application final link. However, when
3118 creating a shared library containing foo, we need to have both symbols
3119 dynamic so that references to .foo are satisfied during the early
3120 stages of linking. Otherwise the linker might decide to pull in a
3121 definition from some other object, eg. a static library.
3123 Update: As of August 2004, we support a new convention. Function
3124 calls may use the function descriptor symbol, ie. "bl foo". This
3125 behaves exactly as "bl .foo". */
3127 /* The linker needs to keep track of the number of relocs that it
3128 decides to copy as dynamic relocs in check_relocs for each symbol.
3129 This is so that it can later discard them if they are found to be
3130 unnecessary. We store the information in a field extending the
3131 regular ELF linker hash table. */
3133 struct ppc_dyn_relocs
3135 struct ppc_dyn_relocs
*next
;
3137 /* The input section of the reloc. */
3140 /* Total number of relocs copied for the input section. */
3141 bfd_size_type count
;
3143 /* Number of pc-relative relocs copied for the input section. */
3144 bfd_size_type pc_count
;
3147 /* Track GOT entries needed for a given symbol. We might need more
3148 than one got entry per symbol. */
3151 struct got_entry
*next
;
3153 /* The symbol addend that we'll be placing in the GOT. */
3156 /* Unlike other ELF targets, we use separate GOT entries for the same
3157 symbol referenced from different input files. This is to support
3158 automatic multiple TOC/GOT sections, where the TOC base can vary
3159 from one input file to another.
3161 Point to the BFD owning this GOT entry. */
3164 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
3165 TLS_TPREL or TLS_DTPREL for tls entries. */
3168 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
3171 bfd_signed_vma refcount
;
3176 /* The same for PLT. */
3179 struct plt_entry
*next
;
3185 bfd_signed_vma refcount
;
3190 /* Of those relocs that might be copied as dynamic relocs, this macro
3191 selects those that must be copied when linking a shared library,
3192 even when the symbol is local. */
3194 #define MUST_BE_DYN_RELOC(RTYPE) \
3195 ((RTYPE) != R_PPC64_REL32 \
3196 && (RTYPE) != R_PPC64_REL64 \
3197 && (RTYPE) != R_PPC64_REL30)
3199 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3200 copying dynamic variables from a shared lib into an app's dynbss
3201 section, and instead use a dynamic relocation to point into the
3202 shared lib. With code that gcc generates, it's vital that this be
3203 enabled; In the PowerPC64 ABI, the address of a function is actually
3204 the address of a function descriptor, which resides in the .opd
3205 section. gcc uses the descriptor directly rather than going via the
3206 GOT as some other ABI's do, which means that initialized function
3207 pointers must reference the descriptor. Thus, a function pointer
3208 initialized to the address of a function in a shared library will
3209 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3210 redefines the function descriptor symbol to point to the copy. This
3211 presents a problem as a plt entry for that function is also
3212 initialized from the function descriptor symbol and the copy reloc
3213 may not be initialized first. */
3214 #define ELIMINATE_COPY_RELOCS 1
3216 /* Section name for stubs is the associated section name plus this
3218 #define STUB_SUFFIX ".stub"
3221 ppc_stub_long_branch:
3222 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3223 destination, but a 24 bit branch in a stub section will reach.
3226 ppc_stub_plt_branch:
3227 Similar to the above, but a 24 bit branch in the stub section won't
3228 reach its destination.
3229 . addis %r12,%r2,xxx@toc@ha
3230 . ld %r11,xxx@toc@l(%r12)
3235 Used to call a function in a shared library. If it so happens that
3236 the plt entry referenced crosses a 64k boundary, then an extra
3237 "addis %r12,%r12,1" will be inserted before the load at xxx+8 or
3238 xxx+16 as appropriate.
3239 . addis %r12,%r2,xxx@toc@ha
3241 . ld %r11,xxx+0@toc@l(%r12)
3242 . ld %r2,xxx+8@toc@l(%r12)
3244 . ld %r11,xxx+16@toc@l(%r12)
3247 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3248 code to adjust the value and save r2 to support multiple toc sections.
3249 A ppc_stub_long_branch with an r2 offset looks like:
3251 . addis %r2,%r2,off@ha
3252 . addi %r2,%r2,off@l
3255 A ppc_stub_plt_branch with an r2 offset looks like:
3257 . addis %r12,%r2,xxx@toc@ha
3258 . ld %r11,xxx@toc@l(%r12)
3259 . addis %r2,%r2,off@ha
3260 . addi %r2,%r2,off@l
3265 enum ppc_stub_type
{
3267 ppc_stub_long_branch
,
3268 ppc_stub_long_branch_r2off
,
3269 ppc_stub_plt_branch
,
3270 ppc_stub_plt_branch_r2off
,
3274 struct ppc_stub_hash_entry
{
3276 /* Base hash table entry structure. */
3277 struct bfd_hash_entry root
;
3279 enum ppc_stub_type stub_type
;
3281 /* The stub section. */
3284 /* Offset within stub_sec of the beginning of this stub. */
3285 bfd_vma stub_offset
;
3287 /* Given the symbol's value and its section we can determine its final
3288 value when building the stubs (so the stub knows where to jump. */
3289 bfd_vma target_value
;
3290 asection
*target_section
;
3292 /* The symbol table entry, if any, that this was derived from. */
3293 struct ppc_link_hash_entry
*h
;
3295 /* And the reloc addend that this was derived from. */
3298 /* Where this stub is being called from, or, in the case of combined
3299 stub sections, the first input section in the group. */
3303 struct ppc_branch_hash_entry
{
3305 /* Base hash table entry structure. */
3306 struct bfd_hash_entry root
;
3308 /* Offset within branch lookup table. */
3309 unsigned int offset
;
3311 /* Generation marker. */
3315 struct ppc_link_hash_entry
3317 struct elf_link_hash_entry elf
;
3320 /* A pointer to the most recently used stub hash entry against this
3322 struct ppc_stub_hash_entry
*stub_cache
;
3324 /* A pointer to the next symbol starting with a '.' */
3325 struct ppc_link_hash_entry
*next_dot_sym
;
3328 /* Track dynamic relocs copied for this symbol. */
3329 struct ppc_dyn_relocs
*dyn_relocs
;
3331 /* Link between function code and descriptor symbols. */
3332 struct ppc_link_hash_entry
*oh
;
3334 /* Flag function code and descriptor symbols. */
3335 unsigned int is_func
:1;
3336 unsigned int is_func_descriptor
:1;
3337 unsigned int fake
:1;
3339 /* Whether global opd/toc sym has been adjusted or not.
3340 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3341 should be set for all globals defined in any opd/toc section. */
3342 unsigned int adjust_done
:1;
3344 /* Set if we twiddled this symbol to weak at some stage. */
3345 unsigned int was_undefined
:1;
3347 /* Contexts in which symbol is used in the GOT (or TOC).
3348 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3349 corresponding relocs are encountered during check_relocs.
3350 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3351 indicate the corresponding GOT entry type is not needed.
3352 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3353 a TPREL one. We use a separate flag rather than setting TPREL
3354 just for convenience in distinguishing the two cases. */
3355 #define TLS_GD 1 /* GD reloc. */
3356 #define TLS_LD 2 /* LD reloc. */
3357 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3358 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3359 #define TLS_TLS 16 /* Any TLS reloc. */
3360 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3361 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3365 /* ppc64 ELF linker hash table. */
3367 struct ppc_link_hash_table
3369 struct elf_link_hash_table elf
;
3371 /* The stub hash table. */
3372 struct bfd_hash_table stub_hash_table
;
3374 /* Another hash table for plt_branch stubs. */
3375 struct bfd_hash_table branch_hash_table
;
3377 /* Linker stub bfd. */
3380 /* Linker call-backs. */
3381 asection
* (*add_stub_section
) (const char *, asection
*);
3382 void (*layout_sections_again
) (void);
3384 /* Array to keep track of which stub sections have been created, and
3385 information on stub grouping. */
3387 /* This is the section to which stubs in the group will be attached. */
3389 /* The stub section. */
3391 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3395 /* Temp used when calculating TOC pointers. */
3398 /* Highest input section id. */
3401 /* Highest output section index. */
3404 /* Used when adding symbols. */
3405 struct ppc_link_hash_entry
*dot_syms
;
3407 /* List of input sections for each output section. */
3408 asection
**input_list
;
3410 /* Short-cuts to get to dynamic linker sections. */
3421 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3422 struct ppc_link_hash_entry
*tls_get_addr
;
3423 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3426 unsigned long stub_count
[ppc_stub_plt_call
];
3428 /* Number of stubs against global syms. */
3429 unsigned long stub_globals
;
3431 /* Set if we should emit symbols for stubs. */
3432 unsigned int emit_stub_syms
:1;
3434 /* Support for multiple toc sections. */
3435 unsigned int no_multi_toc
:1;
3436 unsigned int multi_toc_needed
:1;
3439 unsigned int stub_error
:1;
3441 /* Temp used by ppc64_elf_check_directives. */
3442 unsigned int twiddled_syms
:1;
3444 /* Incremented every time we size stubs. */
3445 unsigned int stub_iteration
;
3447 /* Small local sym to section mapping cache. */
3448 struct sym_sec_cache sym_sec
;
3451 /* Rename some of the generic section flags to better document how they
3453 #define has_toc_reloc has_gp_reloc
3454 #define makes_toc_func_call need_finalize_relax
3455 #define call_check_in_progress reloc_done
3457 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3459 #define ppc_hash_table(p) \
3460 ((struct ppc_link_hash_table *) ((p)->hash))
3462 #define ppc_stub_hash_lookup(table, string, create, copy) \
3463 ((struct ppc_stub_hash_entry *) \
3464 bfd_hash_lookup ((table), (string), (create), (copy)))
3466 #define ppc_branch_hash_lookup(table, string, create, copy) \
3467 ((struct ppc_branch_hash_entry *) \
3468 bfd_hash_lookup ((table), (string), (create), (copy)))
3470 /* Create an entry in the stub hash table. */
3472 static struct bfd_hash_entry
*
3473 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3474 struct bfd_hash_table
*table
,
3477 /* Allocate the structure if it has not already been allocated by a
3481 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3486 /* Call the allocation method of the superclass. */
3487 entry
= bfd_hash_newfunc (entry
, table
, string
);
3490 struct ppc_stub_hash_entry
*eh
;
3492 /* Initialize the local fields. */
3493 eh
= (struct ppc_stub_hash_entry
*) entry
;
3494 eh
->stub_type
= ppc_stub_none
;
3495 eh
->stub_sec
= NULL
;
3496 eh
->stub_offset
= 0;
3497 eh
->target_value
= 0;
3498 eh
->target_section
= NULL
;
3506 /* Create an entry in the branch hash table. */
3508 static struct bfd_hash_entry
*
3509 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3510 struct bfd_hash_table
*table
,
3513 /* Allocate the structure if it has not already been allocated by a
3517 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3522 /* Call the allocation method of the superclass. */
3523 entry
= bfd_hash_newfunc (entry
, table
, string
);
3526 struct ppc_branch_hash_entry
*eh
;
3528 /* Initialize the local fields. */
3529 eh
= (struct ppc_branch_hash_entry
*) entry
;
3537 /* Create an entry in a ppc64 ELF linker hash table. */
3539 static struct bfd_hash_entry
*
3540 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3541 struct bfd_hash_table
*table
,
3544 /* Allocate the structure if it has not already been allocated by a
3548 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3553 /* Call the allocation method of the superclass. */
3554 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3557 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3559 memset (&eh
->u
.stub_cache
, 0,
3560 (sizeof (struct ppc_link_hash_entry
)
3561 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3563 /* When making function calls, old ABI code references function entry
3564 points (dot symbols), while new ABI code references the function
3565 descriptor symbol. We need to make any combination of reference and
3566 definition work together, without breaking archive linking.
3568 For a defined function "foo" and an undefined call to "bar":
3569 An old object defines "foo" and ".foo", references ".bar" (possibly
3571 A new object defines "foo" and references "bar".
3573 A new object thus has no problem with its undefined symbols being
3574 satisfied by definitions in an old object. On the other hand, the
3575 old object won't have ".bar" satisfied by a new object.
3577 Keep a list of newly added dot-symbols. */
3579 if (string
[0] == '.')
3581 struct ppc_link_hash_table
*htab
;
3583 htab
= (struct ppc_link_hash_table
*) table
;
3584 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3585 htab
->dot_syms
= eh
;
3592 /* Create a ppc64 ELF linker hash table. */
3594 static struct bfd_link_hash_table
*
3595 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3597 struct ppc_link_hash_table
*htab
;
3598 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3600 htab
= bfd_zmalloc (amt
);
3604 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3605 sizeof (struct ppc_link_hash_entry
)))
3611 /* Init the stub hash table too. */
3612 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3613 sizeof (struct ppc_stub_hash_entry
)))
3616 /* And the branch hash table. */
3617 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3618 sizeof (struct ppc_branch_hash_entry
)))
3621 /* Initializing two fields of the union is just cosmetic. We really
3622 only care about glist, but when compiled on a 32-bit host the
3623 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3624 debugger inspection of these fields look nicer. */
3625 htab
->elf
.init_got_refcount
.refcount
= 0;
3626 htab
->elf
.init_got_refcount
.glist
= NULL
;
3627 htab
->elf
.init_plt_refcount
.refcount
= 0;
3628 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3629 htab
->elf
.init_got_offset
.offset
= 0;
3630 htab
->elf
.init_got_offset
.glist
= NULL
;
3631 htab
->elf
.init_plt_offset
.offset
= 0;
3632 htab
->elf
.init_plt_offset
.glist
= NULL
;
3634 return &htab
->elf
.root
;
3637 /* Free the derived linker hash table. */
3640 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3642 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3644 bfd_hash_table_free (&ret
->stub_hash_table
);
3645 bfd_hash_table_free (&ret
->branch_hash_table
);
3646 _bfd_generic_link_hash_table_free (hash
);
3649 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3652 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3654 struct ppc_link_hash_table
*htab
;
3656 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3658 /* Always hook our dynamic sections into the first bfd, which is the
3659 linker created stub bfd. This ensures that the GOT header is at
3660 the start of the output TOC section. */
3661 htab
= ppc_hash_table (info
);
3662 htab
->stub_bfd
= abfd
;
3663 htab
->elf
.dynobj
= abfd
;
3666 /* Build a name for an entry in the stub hash table. */
3669 ppc_stub_name (const asection
*input_section
,
3670 const asection
*sym_sec
,
3671 const struct ppc_link_hash_entry
*h
,
3672 const Elf_Internal_Rela
*rel
)
3677 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
3678 offsets from a sym as a branch target? In fact, we could
3679 probably assume the addend is always zero. */
3680 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
3684 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
3685 stub_name
= bfd_malloc (len
);
3686 if (stub_name
== NULL
)
3689 sprintf (stub_name
, "%08x.%s+%x",
3690 input_section
->id
& 0xffffffff,
3691 h
->elf
.root
.root
.string
,
3692 (int) rel
->r_addend
& 0xffffffff);
3696 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
3697 stub_name
= bfd_malloc (len
);
3698 if (stub_name
== NULL
)
3701 sprintf (stub_name
, "%08x.%x:%x+%x",
3702 input_section
->id
& 0xffffffff,
3703 sym_sec
->id
& 0xffffffff,
3704 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
3705 (int) rel
->r_addend
& 0xffffffff);
3707 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
3708 stub_name
[len
- 2] = 0;
3712 /* Look up an entry in the stub hash. Stub entries are cached because
3713 creating the stub name takes a bit of time. */
3715 static struct ppc_stub_hash_entry
*
3716 ppc_get_stub_entry (const asection
*input_section
,
3717 const asection
*sym_sec
,
3718 struct ppc_link_hash_entry
*h
,
3719 const Elf_Internal_Rela
*rel
,
3720 struct ppc_link_hash_table
*htab
)
3722 struct ppc_stub_hash_entry
*stub_entry
;
3723 const asection
*id_sec
;
3725 /* If this input section is part of a group of sections sharing one
3726 stub section, then use the id of the first section in the group.
3727 Stub names need to include a section id, as there may well be
3728 more than one stub used to reach say, printf, and we need to
3729 distinguish between them. */
3730 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
3732 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
3733 && h
->u
.stub_cache
->h
== h
3734 && h
->u
.stub_cache
->id_sec
== id_sec
)
3736 stub_entry
= h
->u
.stub_cache
;
3742 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
3743 if (stub_name
== NULL
)
3746 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
3747 stub_name
, FALSE
, FALSE
);
3749 h
->u
.stub_cache
= stub_entry
;
3757 /* Add a new stub entry to the stub hash. Not all fields of the new
3758 stub entry are initialised. */
3760 static struct ppc_stub_hash_entry
*
3761 ppc_add_stub (const char *stub_name
,
3763 struct ppc_link_hash_table
*htab
)
3767 struct ppc_stub_hash_entry
*stub_entry
;
3769 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
3770 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
3771 if (stub_sec
== NULL
)
3773 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
3774 if (stub_sec
== NULL
)
3780 namelen
= strlen (link_sec
->name
);
3781 len
= namelen
+ sizeof (STUB_SUFFIX
);
3782 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
3786 memcpy (s_name
, link_sec
->name
, namelen
);
3787 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
3788 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
3789 if (stub_sec
== NULL
)
3791 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
3793 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
3796 /* Enter this entry into the linker stub hash table. */
3797 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
3799 if (stub_entry
== NULL
)
3801 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
3802 section
->owner
, stub_name
);
3806 stub_entry
->stub_sec
= stub_sec
;
3807 stub_entry
->stub_offset
= 0;
3808 stub_entry
->id_sec
= link_sec
;
3812 /* Create sections for linker generated code. */
3815 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3817 struct ppc_link_hash_table
*htab
;
3820 htab
= ppc_hash_table (info
);
3822 /* Create .sfpr for code to save and restore fp regs. */
3823 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
3824 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3825 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
3827 if (htab
->sfpr
== NULL
3828 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
3831 /* Create .glink for lazy dynamic linking support. */
3832 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
3834 if (htab
->glink
== NULL
3835 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
3838 /* Create branch lookup table for plt_branch stubs. */
3839 flags
= (SEC_ALLOC
| SEC_LOAD
3840 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3841 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
3843 if (htab
->brlt
== NULL
3844 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
3850 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
3851 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
3852 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
3856 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
3862 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
3863 not already done. */
3866 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
3868 asection
*got
, *relgot
;
3870 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
3874 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
3877 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
3882 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
3883 | SEC_LINKER_CREATED
);
3885 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
3887 || !bfd_set_section_alignment (abfd
, got
, 3))
3890 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
3891 flags
| SEC_READONLY
);
3893 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
3896 ppc64_elf_tdata (abfd
)->got
= got
;
3897 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
3901 /* Create the dynamic sections, and set up shortcuts. */
3904 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
3906 struct ppc_link_hash_table
*htab
;
3908 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
3911 htab
= ppc_hash_table (info
);
3913 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
3914 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
3915 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
3916 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
3918 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
3920 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
3921 || (!info
->shared
&& !htab
->relbss
))
3927 /* Merge PLT info on FROM with that on TO. */
3930 move_plt_plist (struct ppc_link_hash_entry
*from
,
3931 struct ppc_link_hash_entry
*to
)
3933 if (from
->elf
.plt
.plist
!= NULL
)
3935 if (to
->elf
.plt
.plist
!= NULL
)
3937 struct plt_entry
**entp
;
3938 struct plt_entry
*ent
;
3940 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
3942 struct plt_entry
*dent
;
3944 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
3945 if (dent
->addend
== ent
->addend
)
3947 dent
->plt
.refcount
+= ent
->plt
.refcount
;
3954 *entp
= to
->elf
.plt
.plist
;
3957 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
3958 from
->elf
.plt
.plist
= NULL
;
3962 /* Copy the extra info we tack onto an elf_link_hash_entry. */
3965 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
3966 struct elf_link_hash_entry
*dir
,
3967 struct elf_link_hash_entry
*ind
)
3969 struct ppc_link_hash_entry
*edir
, *eind
;
3971 edir
= (struct ppc_link_hash_entry
*) dir
;
3972 eind
= (struct ppc_link_hash_entry
*) ind
;
3974 /* Copy over any dynamic relocs we may have on the indirect sym. */
3975 if (eind
->dyn_relocs
!= NULL
)
3977 if (edir
->dyn_relocs
!= NULL
)
3979 struct ppc_dyn_relocs
**pp
;
3980 struct ppc_dyn_relocs
*p
;
3982 /* Add reloc counts against the indirect sym to the direct sym
3983 list. Merge any entries against the same section. */
3984 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
3986 struct ppc_dyn_relocs
*q
;
3988 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
3989 if (q
->sec
== p
->sec
)
3991 q
->pc_count
+= p
->pc_count
;
3992 q
->count
+= p
->count
;
3999 *pp
= edir
->dyn_relocs
;
4002 edir
->dyn_relocs
= eind
->dyn_relocs
;
4003 eind
->dyn_relocs
= NULL
;
4006 edir
->is_func
|= eind
->is_func
;
4007 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4008 edir
->tls_mask
|= eind
->tls_mask
;
4010 /* If called to transfer flags for a weakdef during processing
4011 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4012 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4013 if (!(ELIMINATE_COPY_RELOCS
4014 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4015 && edir
->elf
.dynamic_adjusted
))
4016 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4018 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4019 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4020 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4021 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4023 /* If we were called to copy over info for a weak sym, that's all. */
4024 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4027 /* Copy over got entries that we may have already seen to the
4028 symbol which just became indirect. */
4029 if (eind
->elf
.got
.glist
!= NULL
)
4031 if (edir
->elf
.got
.glist
!= NULL
)
4033 struct got_entry
**entp
;
4034 struct got_entry
*ent
;
4036 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4038 struct got_entry
*dent
;
4040 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4041 if (dent
->addend
== ent
->addend
4042 && dent
->owner
== ent
->owner
4043 && dent
->tls_type
== ent
->tls_type
)
4045 dent
->got
.refcount
+= ent
->got
.refcount
;
4052 *entp
= edir
->elf
.got
.glist
;
4055 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4056 eind
->elf
.got
.glist
= NULL
;
4059 /* And plt entries. */
4060 move_plt_plist (eind
, edir
);
4062 if (eind
->elf
.dynindx
!= -1)
4064 if (edir
->elf
.dynindx
!= -1)
4065 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4066 edir
->elf
.dynstr_index
);
4067 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4068 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4069 eind
->elf
.dynindx
= -1;
4070 eind
->elf
.dynstr_index
= 0;
4074 /* Find the function descriptor hash entry from the given function code
4075 hash entry FH. Link the entries via their OH fields. */
4077 static struct ppc_link_hash_entry
*
4078 get_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4080 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4084 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4086 fdh
= (struct ppc_link_hash_entry
*)
4087 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4090 fdh
->is_func_descriptor
= 1;
4100 /* Make a fake function descriptor sym for the code sym FH. */
4102 static struct ppc_link_hash_entry
*
4103 make_fdh (struct bfd_link_info
*info
,
4104 struct ppc_link_hash_entry
*fh
)
4108 struct bfd_link_hash_entry
*bh
;
4109 struct ppc_link_hash_entry
*fdh
;
4111 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4112 newsym
= bfd_make_empty_symbol (abfd
);
4113 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4114 newsym
->section
= bfd_und_section_ptr
;
4116 newsym
->flags
= BSF_WEAK
;
4119 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4120 newsym
->flags
, newsym
->section
,
4121 newsym
->value
, NULL
, FALSE
, FALSE
,
4125 fdh
= (struct ppc_link_hash_entry
*) bh
;
4126 fdh
->elf
.non_elf
= 0;
4128 fdh
->is_func_descriptor
= 1;
4135 /* Fix function descriptor symbols defined in .opd sections to be
4139 ppc64_elf_add_symbol_hook (bfd
*ibfd ATTRIBUTE_UNUSED
,
4140 struct bfd_link_info
*info ATTRIBUTE_UNUSED
,
4141 Elf_Internal_Sym
*isym
,
4142 const char **name ATTRIBUTE_UNUSED
,
4143 flagword
*flags ATTRIBUTE_UNUSED
,
4145 bfd_vma
*value ATTRIBUTE_UNUSED
)
4148 && strcmp (bfd_get_section_name (ibfd
, *sec
), ".opd") == 0)
4149 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4154 /* This function makes an old ABI object reference to ".bar" cause the
4155 inclusion of a new ABI object archive that defines "bar".
4156 NAME is a symbol defined in an archive. Return a symbol in the hash
4157 table that might be satisfied by the archive symbols. */
4159 static struct elf_link_hash_entry
*
4160 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4161 struct bfd_link_info
*info
,
4164 struct elf_link_hash_entry
*h
;
4168 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4170 /* Don't return this sym if it is a fake function descriptor
4171 created by add_symbol_adjust. */
4172 && !(h
->root
.type
== bfd_link_hash_undefweak
4173 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4179 len
= strlen (name
);
4180 dot_name
= bfd_alloc (abfd
, len
+ 2);
4181 if (dot_name
== NULL
)
4182 return (struct elf_link_hash_entry
*) 0 - 1;
4184 memcpy (dot_name
+ 1, name
, len
+ 1);
4185 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4186 bfd_release (abfd
, dot_name
);
4190 /* This function satisfies all old ABI object references to ".bar" if a
4191 new ABI object defines "bar". Well, at least, undefined dot symbols
4192 are made weak. This stops later archive searches from including an
4193 object if we already have a function descriptor definition. It also
4194 prevents the linker complaining about undefined symbols.
4195 We also check and correct mismatched symbol visibility here. The
4196 most restrictive visibility of the function descriptor and the
4197 function entry symbol is used. */
4200 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4202 struct ppc_link_hash_table
*htab
;
4203 struct ppc_link_hash_entry
*fdh
;
4205 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4208 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4209 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4211 if (eh
->elf
.root
.root
.string
[0] != '.')
4214 htab
= ppc_hash_table (info
);
4215 fdh
= get_fdh (eh
, htab
);
4217 && !info
->relocatable
4218 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4219 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4220 && eh
->elf
.ref_regular
)
4222 /* Make an undefweak function descriptor sym, which is enough to
4223 pull in an --as-needed shared lib, but won't cause link
4224 errors. Archives are handled elsewhere. */
4225 fdh
= make_fdh (info
, eh
);
4229 fdh
->elf
.ref_regular
= 1;
4231 else if (fdh
!= NULL
)
4233 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4234 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4235 if (entry_vis
< descr_vis
)
4236 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4237 else if (entry_vis
> descr_vis
)
4238 eh
->elf
.other
+= descr_vis
- entry_vis
;
4240 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4241 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4242 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4244 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4245 eh
->was_undefined
= 1;
4246 htab
->twiddled_syms
= 1;
4253 /* Process list of dot-symbols we made in link_hash_newfunc. */
4256 ppc64_elf_check_directives (bfd
*ibfd
, struct bfd_link_info
*info
)
4258 struct ppc_link_hash_table
*htab
;
4259 struct ppc_link_hash_entry
**p
, *eh
;
4261 htab
= ppc_hash_table (info
);
4262 if (!is_ppc64_elf_target (htab
->elf
.root
.creator
))
4265 if (is_ppc64_elf_target (ibfd
->xvec
))
4267 p
= &htab
->dot_syms
;
4268 while ((eh
= *p
) != NULL
)
4271 if (!add_symbol_adjust (eh
, info
))
4273 p
= &eh
->u
.next_dot_sym
;
4277 /* Clear the list for non-ppc64 input files. */
4278 p
= &htab
->dot_syms
;
4279 while ((eh
= *p
) != NULL
)
4282 p
= &eh
->u
.next_dot_sym
;
4285 /* We need to fix the undefs list for any syms we have twiddled to
4287 if (htab
->twiddled_syms
)
4289 bfd_link_repair_undef_list (&htab
->elf
.root
);
4290 htab
->twiddled_syms
= 0;
4295 /* Undo hash table changes when an --as-needed input file is determined
4296 not to be needed. */
4299 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4300 struct bfd_link_info
*info
)
4302 ppc_hash_table (info
)->dot_syms
= NULL
;
4307 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4308 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4310 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4311 char *local_got_tls_masks
;
4313 if (local_got_ents
== NULL
)
4315 bfd_size_type size
= symtab_hdr
->sh_info
;
4317 size
*= sizeof (*local_got_ents
) + sizeof (*local_got_tls_masks
);
4318 local_got_ents
= bfd_zalloc (abfd
, size
);
4319 if (local_got_ents
== NULL
)
4321 elf_local_got_ents (abfd
) = local_got_ents
;
4324 if ((tls_type
& TLS_EXPLICIT
) == 0)
4326 struct got_entry
*ent
;
4328 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4329 if (ent
->addend
== r_addend
4330 && ent
->owner
== abfd
4331 && ent
->tls_type
== tls_type
)
4335 bfd_size_type amt
= sizeof (*ent
);
4336 ent
= bfd_alloc (abfd
, amt
);
4339 ent
->next
= local_got_ents
[r_symndx
];
4340 ent
->addend
= r_addend
;
4342 ent
->tls_type
= tls_type
;
4343 ent
->got
.refcount
= 0;
4344 local_got_ents
[r_symndx
] = ent
;
4346 ent
->got
.refcount
+= 1;
4349 local_got_tls_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
4350 local_got_tls_masks
[r_symndx
] |= tls_type
;
4355 update_plt_info (bfd
*abfd
, struct ppc_link_hash_entry
*eh
, bfd_vma addend
)
4357 struct plt_entry
*ent
;
4359 for (ent
= eh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
4360 if (ent
->addend
== addend
)
4364 bfd_size_type amt
= sizeof (*ent
);
4365 ent
= bfd_alloc (abfd
, amt
);
4368 ent
->next
= eh
->elf
.plt
.plist
;
4369 ent
->addend
= addend
;
4370 ent
->plt
.refcount
= 0;
4371 eh
->elf
.plt
.plist
= ent
;
4373 ent
->plt
.refcount
+= 1;
4374 eh
->elf
.needs_plt
= 1;
4375 if (eh
->elf
.root
.root
.string
[0] == '.'
4376 && eh
->elf
.root
.root
.string
[1] != '\0')
4381 /* Look through the relocs for a section during the first phase, and
4382 calculate needed space in the global offset table, procedure
4383 linkage table, and dynamic reloc sections. */
4386 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4387 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4389 struct ppc_link_hash_table
*htab
;
4390 Elf_Internal_Shdr
*symtab_hdr
;
4391 struct elf_link_hash_entry
**sym_hashes
, **sym_hashes_end
;
4392 const Elf_Internal_Rela
*rel
;
4393 const Elf_Internal_Rela
*rel_end
;
4395 asection
**opd_sym_map
;
4397 if (info
->relocatable
)
4400 /* Don't do anything special with non-loaded, non-alloced sections.
4401 In particular, any relocs in such sections should not affect GOT
4402 and PLT reference counting (ie. we don't allow them to create GOT
4403 or PLT entries), there's no possibility or desire to optimize TLS
4404 relocs, and there's not much point in propagating relocs to shared
4405 libs that the dynamic linker won't relocate. */
4406 if ((sec
->flags
& SEC_ALLOC
) == 0)
4409 htab
= ppc_hash_table (info
);
4410 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
4412 sym_hashes
= elf_sym_hashes (abfd
);
4413 sym_hashes_end
= (sym_hashes
4414 + symtab_hdr
->sh_size
/ sizeof (Elf64_External_Sym
)
4415 - symtab_hdr
->sh_info
);
4419 if (strcmp (bfd_get_section_name (abfd
, sec
), ".opd") == 0)
4421 /* Garbage collection needs some extra help with .opd sections.
4422 We don't want to necessarily keep everything referenced by
4423 relocs in .opd, as that would keep all functions. Instead,
4424 if we reference an .opd symbol (a function descriptor), we
4425 want to keep the function code symbol's section. This is
4426 easy for global symbols, but for local syms we need to keep
4427 information about the associated function section. Later, if
4428 edit_opd deletes entries, we'll use this array to adjust
4429 local syms in .opd. */
4431 asection
*func_section
;
4436 amt
= sec
->size
* sizeof (union opd_info
) / 8;
4437 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4438 if (opd_sym_map
== NULL
)
4440 ppc64_elf_section_data (sec
)->u
.opd_func_sec
= opd_sym_map
;
4441 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4442 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4445 if (htab
->sfpr
== NULL
4446 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4449 rel_end
= relocs
+ sec
->reloc_count
;
4450 for (rel
= relocs
; rel
< rel_end
; rel
++)
4452 unsigned long r_symndx
;
4453 struct elf_link_hash_entry
*h
;
4454 enum elf_ppc64_reloc_type r_type
;
4456 struct _ppc64_elf_section_data
*ppc64_sec
;
4458 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4459 if (r_symndx
< symtab_hdr
->sh_info
)
4463 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4464 while (h
->root
.type
== bfd_link_hash_indirect
4465 || h
->root
.type
== bfd_link_hash_warning
)
4466 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
4469 r_type
= ELF64_R_TYPE (rel
->r_info
);
4472 case R_PPC64_GOT_TLSLD16
:
4473 case R_PPC64_GOT_TLSLD16_LO
:
4474 case R_PPC64_GOT_TLSLD16_HI
:
4475 case R_PPC64_GOT_TLSLD16_HA
:
4476 ppc64_tlsld_got (abfd
)->refcount
+= 1;
4477 tls_type
= TLS_TLS
| TLS_LD
;
4480 case R_PPC64_GOT_TLSGD16
:
4481 case R_PPC64_GOT_TLSGD16_LO
:
4482 case R_PPC64_GOT_TLSGD16_HI
:
4483 case R_PPC64_GOT_TLSGD16_HA
:
4484 tls_type
= TLS_TLS
| TLS_GD
;
4487 case R_PPC64_GOT_TPREL16_DS
:
4488 case R_PPC64_GOT_TPREL16_LO_DS
:
4489 case R_PPC64_GOT_TPREL16_HI
:
4490 case R_PPC64_GOT_TPREL16_HA
:
4492 info
->flags
|= DF_STATIC_TLS
;
4493 tls_type
= TLS_TLS
| TLS_TPREL
;
4496 case R_PPC64_GOT_DTPREL16_DS
:
4497 case R_PPC64_GOT_DTPREL16_LO_DS
:
4498 case R_PPC64_GOT_DTPREL16_HI
:
4499 case R_PPC64_GOT_DTPREL16_HA
:
4500 tls_type
= TLS_TLS
| TLS_DTPREL
;
4502 sec
->has_tls_reloc
= 1;
4506 case R_PPC64_GOT16_DS
:
4507 case R_PPC64_GOT16_HA
:
4508 case R_PPC64_GOT16_HI
:
4509 case R_PPC64_GOT16_LO
:
4510 case R_PPC64_GOT16_LO_DS
:
4511 /* This symbol requires a global offset table entry. */
4512 sec
->has_toc_reloc
= 1;
4513 if (ppc64_elf_tdata (abfd
)->got
== NULL
4514 && !create_got_section (abfd
, info
))
4519 struct ppc_link_hash_entry
*eh
;
4520 struct got_entry
*ent
;
4522 eh
= (struct ppc_link_hash_entry
*) h
;
4523 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
4524 if (ent
->addend
== rel
->r_addend
4525 && ent
->owner
== abfd
4526 && ent
->tls_type
== tls_type
)
4530 bfd_size_type amt
= sizeof (*ent
);
4531 ent
= bfd_alloc (abfd
, amt
);
4534 ent
->next
= eh
->elf
.got
.glist
;
4535 ent
->addend
= rel
->r_addend
;
4537 ent
->tls_type
= tls_type
;
4538 ent
->got
.refcount
= 0;
4539 eh
->elf
.got
.glist
= ent
;
4541 ent
->got
.refcount
+= 1;
4542 eh
->tls_mask
|= tls_type
;
4545 /* This is a global offset table entry for a local symbol. */
4546 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4547 rel
->r_addend
, tls_type
))
4551 case R_PPC64_PLT16_HA
:
4552 case R_PPC64_PLT16_HI
:
4553 case R_PPC64_PLT16_LO
:
4556 /* This symbol requires a procedure linkage table entry. We
4557 actually build the entry in adjust_dynamic_symbol,
4558 because this might be a case of linking PIC code without
4559 linking in any dynamic objects, in which case we don't
4560 need to generate a procedure linkage table after all. */
4563 /* It does not make sense to have a procedure linkage
4564 table entry for a local symbol. */
4565 bfd_set_error (bfd_error_bad_value
);
4569 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4574 /* The following relocations don't need to propagate the
4575 relocation if linking a shared object since they are
4576 section relative. */
4577 case R_PPC64_SECTOFF
:
4578 case R_PPC64_SECTOFF_LO
:
4579 case R_PPC64_SECTOFF_HI
:
4580 case R_PPC64_SECTOFF_HA
:
4581 case R_PPC64_SECTOFF_DS
:
4582 case R_PPC64_SECTOFF_LO_DS
:
4583 case R_PPC64_DTPREL16
:
4584 case R_PPC64_DTPREL16_LO
:
4585 case R_PPC64_DTPREL16_HI
:
4586 case R_PPC64_DTPREL16_HA
:
4587 case R_PPC64_DTPREL16_DS
:
4588 case R_PPC64_DTPREL16_LO_DS
:
4589 case R_PPC64_DTPREL16_HIGHER
:
4590 case R_PPC64_DTPREL16_HIGHERA
:
4591 case R_PPC64_DTPREL16_HIGHEST
:
4592 case R_PPC64_DTPREL16_HIGHESTA
:
4597 case R_PPC64_TOC16_LO
:
4598 case R_PPC64_TOC16_HI
:
4599 case R_PPC64_TOC16_HA
:
4600 case R_PPC64_TOC16_DS
:
4601 case R_PPC64_TOC16_LO_DS
:
4602 sec
->has_toc_reloc
= 1;
4605 /* This relocation describes the C++ object vtable hierarchy.
4606 Reconstruct it for later use during GC. */
4607 case R_PPC64_GNU_VTINHERIT
:
4608 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
4612 /* This relocation describes which C++ vtable entries are actually
4613 used. Record for later use during GC. */
4614 case R_PPC64_GNU_VTENTRY
:
4615 if (!bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
4620 case R_PPC64_REL14_BRTAKEN
:
4621 case R_PPC64_REL14_BRNTAKEN
:
4623 asection
*dest
= NULL
;
4625 /* Heuristic: If jumping outside our section, chances are
4626 we are going to need a stub. */
4629 /* If the sym is weak it may be overridden later, so
4630 don't assume we know where a weak sym lives. */
4631 if (h
->root
.type
== bfd_link_hash_defined
)
4632 dest
= h
->root
.u
.def
.section
;
4635 dest
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4638 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
4645 /* We may need a .plt entry if the function this reloc
4646 refers to is in a shared lib. */
4647 if (!update_plt_info (abfd
, (struct ppc_link_hash_entry
*) h
,
4650 if (h
== &htab
->tls_get_addr
->elf
4651 || h
== &htab
->tls_get_addr_fd
->elf
)
4652 sec
->has_tls_reloc
= 1;
4653 else if (htab
->tls_get_addr
== NULL
4654 && CONST_STRNEQ (h
->root
.root
.string
, ".__tls_get_addr")
4655 && (h
->root
.root
.string
[15] == 0
4656 || h
->root
.root
.string
[15] == '@'))
4658 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) h
;
4659 sec
->has_tls_reloc
= 1;
4661 else if (htab
->tls_get_addr_fd
== NULL
4662 && CONST_STRNEQ (h
->root
.root
.string
, "__tls_get_addr")
4663 && (h
->root
.root
.string
[14] == 0
4664 || h
->root
.root
.string
[14] == '@'))
4666 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) h
;
4667 sec
->has_tls_reloc
= 1;
4672 case R_PPC64_TPREL64
:
4673 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
4675 info
->flags
|= DF_STATIC_TLS
;
4678 case R_PPC64_DTPMOD64
:
4679 if (rel
+ 1 < rel_end
4680 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
4681 && rel
[1].r_offset
== rel
->r_offset
+ 8)
4682 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
4684 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
4687 case R_PPC64_DTPREL64
:
4688 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
4690 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
4691 && rel
[-1].r_offset
== rel
->r_offset
- 8)
4692 /* This is the second reloc of a dtpmod, dtprel pair.
4693 Don't mark with TLS_DTPREL. */
4697 sec
->has_tls_reloc
= 1;
4700 struct ppc_link_hash_entry
*eh
;
4701 eh
= (struct ppc_link_hash_entry
*) h
;
4702 eh
->tls_mask
|= tls_type
;
4705 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4706 rel
->r_addend
, tls_type
))
4709 ppc64_sec
= ppc64_elf_section_data (sec
);
4710 if (ppc64_sec
->sec_type
!= sec_toc
)
4712 /* One extra to simplify get_tls_mask. */
4713 bfd_size_type amt
= sec
->size
* sizeof (unsigned) / 8 + 1;
4714 ppc64_sec
->u
.t_symndx
= bfd_zalloc (abfd
, amt
);
4715 if (ppc64_sec
->u
.t_symndx
== NULL
)
4717 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
4718 ppc64_sec
->sec_type
= sec_toc
;
4720 BFD_ASSERT (rel
->r_offset
% 8 == 0);
4721 ppc64_sec
->u
.t_symndx
[rel
->r_offset
/ 8] = r_symndx
;
4723 /* Mark the second slot of a GD or LD entry.
4724 -1 to indicate GD and -2 to indicate LD. */
4725 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
4726 ppc64_sec
->u
.t_symndx
[rel
->r_offset
/ 8 + 1] = -1;
4727 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
4728 ppc64_sec
->u
.t_symndx
[rel
->r_offset
/ 8 + 1] = -2;
4731 case R_PPC64_TPREL16
:
4732 case R_PPC64_TPREL16_LO
:
4733 case R_PPC64_TPREL16_HI
:
4734 case R_PPC64_TPREL16_HA
:
4735 case R_PPC64_TPREL16_DS
:
4736 case R_PPC64_TPREL16_LO_DS
:
4737 case R_PPC64_TPREL16_HIGHER
:
4738 case R_PPC64_TPREL16_HIGHERA
:
4739 case R_PPC64_TPREL16_HIGHEST
:
4740 case R_PPC64_TPREL16_HIGHESTA
:
4743 info
->flags
|= DF_STATIC_TLS
;
4748 case R_PPC64_ADDR64
:
4749 if (opd_sym_map
!= NULL
4750 && rel
+ 1 < rel_end
4751 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
4755 if (h
->root
.root
.string
[0] == '.'
4756 && h
->root
.root
.string
[1] != 0
4757 && get_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
4760 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
4766 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
, sec
,
4771 opd_sym_map
[rel
->r_offset
/ 8] = s
;
4779 case R_PPC64_ADDR14
:
4780 case R_PPC64_ADDR14_BRNTAKEN
:
4781 case R_PPC64_ADDR14_BRTAKEN
:
4782 case R_PPC64_ADDR16
:
4783 case R_PPC64_ADDR16_DS
:
4784 case R_PPC64_ADDR16_HA
:
4785 case R_PPC64_ADDR16_HI
:
4786 case R_PPC64_ADDR16_HIGHER
:
4787 case R_PPC64_ADDR16_HIGHERA
:
4788 case R_PPC64_ADDR16_HIGHEST
:
4789 case R_PPC64_ADDR16_HIGHESTA
:
4790 case R_PPC64_ADDR16_LO
:
4791 case R_PPC64_ADDR16_LO_DS
:
4792 case R_PPC64_ADDR24
:
4793 case R_PPC64_ADDR32
:
4794 case R_PPC64_UADDR16
:
4795 case R_PPC64_UADDR32
:
4796 case R_PPC64_UADDR64
:
4798 if (h
!= NULL
&& !info
->shared
)
4799 /* We may need a copy reloc. */
4802 /* Don't propagate .opd relocs. */
4803 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
4806 /* If we are creating a shared library, and this is a reloc
4807 against a global symbol, or a non PC relative reloc
4808 against a local symbol, then we need to copy the reloc
4809 into the shared library. However, if we are linking with
4810 -Bsymbolic, we do not need to copy a reloc against a
4811 global symbol which is defined in an object we are
4812 including in the link (i.e., DEF_REGULAR is set). At
4813 this point we have not seen all the input files, so it is
4814 possible that DEF_REGULAR is not set now but will be set
4815 later (it is never cleared). In case of a weak definition,
4816 DEF_REGULAR may be cleared later by a strong definition in
4817 a shared library. We account for that possibility below by
4818 storing information in the dyn_relocs field of the hash
4819 table entry. A similar situation occurs when creating
4820 shared libraries and symbol visibility changes render the
4823 If on the other hand, we are creating an executable, we
4824 may need to keep relocations for symbols satisfied by a
4825 dynamic library if we manage to avoid copy relocs for the
4829 && (MUST_BE_DYN_RELOC (r_type
)
4831 && (! info
->symbolic
4832 || h
->root
.type
== bfd_link_hash_defweak
4833 || !h
->def_regular
))))
4834 || (ELIMINATE_COPY_RELOCS
4837 && (h
->root
.type
== bfd_link_hash_defweak
4838 || !h
->def_regular
)))
4840 struct ppc_dyn_relocs
*p
;
4841 struct ppc_dyn_relocs
**head
;
4843 /* We must copy these reloc types into the output file.
4844 Create a reloc section in dynobj and make room for
4851 name
= (bfd_elf_string_from_elf_section
4853 elf_elfheader (abfd
)->e_shstrndx
,
4854 elf_section_data (sec
)->rel_hdr
.sh_name
));
4858 if (! CONST_STRNEQ (name
, ".rela")
4859 || strcmp (bfd_get_section_name (abfd
, sec
),
4862 (*_bfd_error_handler
)
4863 (_("%B: bad relocation section name `%s\'"),
4865 bfd_set_error (bfd_error_bad_value
);
4868 dynobj
= htab
->elf
.dynobj
;
4869 sreloc
= bfd_get_section_by_name (dynobj
, name
);
4874 flags
= (SEC_HAS_CONTENTS
| SEC_READONLY
4875 | SEC_IN_MEMORY
| SEC_LINKER_CREATED
4876 | SEC_ALLOC
| SEC_LOAD
);
4877 sreloc
= bfd_make_section_with_flags (dynobj
,
4881 || ! bfd_set_section_alignment (dynobj
, sreloc
, 3))
4884 elf_section_data (sec
)->sreloc
= sreloc
;
4887 /* If this is a global symbol, we count the number of
4888 relocations we need for this symbol. */
4891 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
4895 /* Track dynamic relocs needed for local syms too.
4896 We really need local syms available to do this
4902 s
= bfd_section_from_r_symndx (abfd
, &htab
->sym_sec
,
4907 vpp
= &elf_section_data (s
)->local_dynrel
;
4908 head
= (struct ppc_dyn_relocs
**) vpp
;
4912 if (p
== NULL
|| p
->sec
!= sec
)
4914 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
4925 if (!MUST_BE_DYN_RELOC (r_type
))
4938 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
4939 of the code entry point, and its section. */
4942 opd_entry_value (asection
*opd_sec
,
4944 asection
**code_sec
,
4947 bfd
*opd_bfd
= opd_sec
->owner
;
4948 Elf_Internal_Rela
*relocs
;
4949 Elf_Internal_Rela
*lo
, *hi
, *look
;
4952 /* No relocs implies we are linking a --just-symbols object. */
4953 if (opd_sec
->reloc_count
== 0)
4957 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
4958 return (bfd_vma
) -1;
4960 if (code_sec
!= NULL
)
4962 asection
*sec
, *likely
= NULL
;
4963 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
4965 && (sec
->flags
& SEC_LOAD
) != 0
4966 && (sec
->flags
& SEC_ALLOC
) != 0)
4971 if (code_off
!= NULL
)
4972 *code_off
= val
- likely
->vma
;
4978 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
4980 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
4982 /* Go find the opd reloc at the sym address. */
4984 BFD_ASSERT (lo
!= NULL
);
4985 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
4989 look
= lo
+ (hi
- lo
) / 2;
4990 if (look
->r_offset
< offset
)
4992 else if (look
->r_offset
> offset
)
4996 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (opd_bfd
)->symtab_hdr
;
4997 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
4998 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5000 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5003 if (symndx
< symtab_hdr
->sh_info
)
5005 Elf_Internal_Sym
*sym
;
5007 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5010 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5011 symtab_hdr
->sh_info
,
5012 0, NULL
, NULL
, NULL
);
5015 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5019 val
= sym
->st_value
;
5021 if ((sym
->st_shndx
!= SHN_UNDEF
5022 && sym
->st_shndx
< SHN_LORESERVE
)
5023 || sym
->st_shndx
> SHN_HIRESERVE
)
5024 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5025 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5029 struct elf_link_hash_entry
**sym_hashes
;
5030 struct elf_link_hash_entry
*rh
;
5032 sym_hashes
= elf_sym_hashes (opd_bfd
);
5033 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5034 while (rh
->root
.type
== bfd_link_hash_indirect
5035 || rh
->root
.type
== bfd_link_hash_warning
)
5036 rh
= ((struct elf_link_hash_entry
*) rh
->root
.u
.i
.link
);
5037 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5038 || rh
->root
.type
== bfd_link_hash_defweak
);
5039 val
= rh
->root
.u
.def
.value
;
5040 sec
= rh
->root
.u
.def
.section
;
5042 val
+= look
->r_addend
;
5043 if (code_off
!= NULL
)
5045 if (code_sec
!= NULL
)
5047 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5048 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5057 /* Mark sections containing dynamically referenced symbols. When
5058 building shared libraries, we must assume that any visible symbol is
5062 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5064 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5065 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5067 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5068 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5070 /* Dynamic linking info is on the func descriptor sym. */
5072 && eh
->oh
->is_func_descriptor
5073 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5074 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5077 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5078 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5079 && (eh
->elf
.ref_dynamic
5080 || (!info
->executable
5081 && eh
->elf
.def_regular
5082 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5083 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5087 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5089 /* Function descriptor syms cause the associated
5090 function code sym section to be marked. */
5091 if (eh
->is_func_descriptor
5092 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5093 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5094 eh
->oh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5095 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5096 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5097 eh
->elf
.root
.u
.def
.value
,
5098 &code_sec
, NULL
) != (bfd_vma
) -1)
5099 code_sec
->flags
|= SEC_KEEP
;
5105 /* Return the section that should be marked against GC for a given
5109 ppc64_elf_gc_mark_hook (asection
*sec
,
5110 struct bfd_link_info
*info
,
5111 Elf_Internal_Rela
*rel
,
5112 struct elf_link_hash_entry
*h
,
5113 Elf_Internal_Sym
*sym
)
5117 /* First mark all our entry sym sections. */
5118 if (info
->gc_sym_list
!= NULL
)
5120 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5121 struct bfd_sym_chain
*sym
= info
->gc_sym_list
;
5123 info
->gc_sym_list
= NULL
;
5124 for (; sym
!= NULL
; sym
= sym
->next
)
5126 struct ppc_link_hash_entry
*eh
;
5128 eh
= (struct ppc_link_hash_entry
*)
5129 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, FALSE
);
5132 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5133 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5136 if (eh
->is_func_descriptor
5137 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5138 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5139 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5140 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5141 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5142 eh
->elf
.root
.u
.def
.value
,
5143 &rsec
, NULL
) != (bfd_vma
) -1)
5149 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5151 rsec
= eh
->elf
.root
.u
.def
.section
;
5153 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5157 /* Syms return NULL if we're marking .opd, so we avoid marking all
5158 function sections, as all functions are referenced in .opd. */
5160 if (get_opd_info (sec
) != NULL
)
5165 enum elf_ppc64_reloc_type r_type
;
5166 struct ppc_link_hash_entry
*eh
;
5168 r_type
= ELF64_R_TYPE (rel
->r_info
);
5171 case R_PPC64_GNU_VTINHERIT
:
5172 case R_PPC64_GNU_VTENTRY
:
5176 switch (h
->root
.type
)
5178 case bfd_link_hash_defined
:
5179 case bfd_link_hash_defweak
:
5180 eh
= (struct ppc_link_hash_entry
*) h
;
5182 && eh
->oh
->is_func_descriptor
5183 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5184 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5187 /* Function descriptor syms cause the associated
5188 function code sym section to be marked. */
5189 if (eh
->is_func_descriptor
5190 && (eh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5191 || eh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
5193 /* They also mark their opd section. */
5194 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5195 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5196 ppc64_elf_gc_mark_hook
);
5198 rsec
= eh
->oh
->elf
.root
.u
.def
.section
;
5200 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5201 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5202 eh
->elf
.root
.u
.def
.value
,
5203 &rsec
, NULL
) != (bfd_vma
) -1)
5205 if (!eh
->elf
.root
.u
.def
.section
->gc_mark
)
5206 _bfd_elf_gc_mark (info
, eh
->elf
.root
.u
.def
.section
,
5207 ppc64_elf_gc_mark_hook
);
5210 rsec
= h
->root
.u
.def
.section
;
5213 case bfd_link_hash_common
:
5214 rsec
= h
->root
.u
.c
.p
->section
;
5224 asection
**opd_sym_section
;
5226 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5227 opd_sym_section
= get_opd_info (rsec
);
5228 if (opd_sym_section
!= NULL
)
5231 _bfd_elf_gc_mark (info
, rsec
, ppc64_elf_gc_mark_hook
);
5233 rsec
= opd_sym_section
[(sym
->st_value
+ rel
->r_addend
) / 8];
5240 /* Update the .got, .plt. and dynamic reloc reference counts for the
5241 section being removed. */
5244 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5245 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5247 struct ppc_link_hash_table
*htab
;
5248 Elf_Internal_Shdr
*symtab_hdr
;
5249 struct elf_link_hash_entry
**sym_hashes
;
5250 struct got_entry
**local_got_ents
;
5251 const Elf_Internal_Rela
*rel
, *relend
;
5253 if ((sec
->flags
& SEC_ALLOC
) == 0)
5256 elf_section_data (sec
)->local_dynrel
= NULL
;
5258 htab
= ppc_hash_table (info
);
5259 symtab_hdr
= &elf_tdata (abfd
)->symtab_hdr
;
5260 sym_hashes
= elf_sym_hashes (abfd
);
5261 local_got_ents
= elf_local_got_ents (abfd
);
5263 relend
= relocs
+ sec
->reloc_count
;
5264 for (rel
= relocs
; rel
< relend
; rel
++)
5266 unsigned long r_symndx
;
5267 enum elf_ppc64_reloc_type r_type
;
5268 struct elf_link_hash_entry
*h
= NULL
;
5271 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5272 r_type
= ELF64_R_TYPE (rel
->r_info
);
5273 if (r_symndx
>= symtab_hdr
->sh_info
)
5275 struct ppc_link_hash_entry
*eh
;
5276 struct ppc_dyn_relocs
**pp
;
5277 struct ppc_dyn_relocs
*p
;
5279 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5280 while (h
->root
.type
== bfd_link_hash_indirect
5281 || h
->root
.type
== bfd_link_hash_warning
)
5282 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
5283 eh
= (struct ppc_link_hash_entry
*) h
;
5285 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5288 /* Everything must go for SEC. */
5296 case R_PPC64_GOT_TLSLD16
:
5297 case R_PPC64_GOT_TLSLD16_LO
:
5298 case R_PPC64_GOT_TLSLD16_HI
:
5299 case R_PPC64_GOT_TLSLD16_HA
:
5300 ppc64_tlsld_got (abfd
)->refcount
-= 1;
5301 tls_type
= TLS_TLS
| TLS_LD
;
5304 case R_PPC64_GOT_TLSGD16
:
5305 case R_PPC64_GOT_TLSGD16_LO
:
5306 case R_PPC64_GOT_TLSGD16_HI
:
5307 case R_PPC64_GOT_TLSGD16_HA
:
5308 tls_type
= TLS_TLS
| TLS_GD
;
5311 case R_PPC64_GOT_TPREL16_DS
:
5312 case R_PPC64_GOT_TPREL16_LO_DS
:
5313 case R_PPC64_GOT_TPREL16_HI
:
5314 case R_PPC64_GOT_TPREL16_HA
:
5315 tls_type
= TLS_TLS
| TLS_TPREL
;
5318 case R_PPC64_GOT_DTPREL16_DS
:
5319 case R_PPC64_GOT_DTPREL16_LO_DS
:
5320 case R_PPC64_GOT_DTPREL16_HI
:
5321 case R_PPC64_GOT_DTPREL16_HA
:
5322 tls_type
= TLS_TLS
| TLS_DTPREL
;
5326 case R_PPC64_GOT16_DS
:
5327 case R_PPC64_GOT16_HA
:
5328 case R_PPC64_GOT16_HI
:
5329 case R_PPC64_GOT16_LO
:
5330 case R_PPC64_GOT16_LO_DS
:
5333 struct got_entry
*ent
;
5338 ent
= local_got_ents
[r_symndx
];
5340 for (; ent
!= NULL
; ent
= ent
->next
)
5341 if (ent
->addend
== rel
->r_addend
5342 && ent
->owner
== abfd
5343 && ent
->tls_type
== tls_type
)
5347 if (ent
->got
.refcount
> 0)
5348 ent
->got
.refcount
-= 1;
5352 case R_PPC64_PLT16_HA
:
5353 case R_PPC64_PLT16_HI
:
5354 case R_PPC64_PLT16_LO
:
5358 case R_PPC64_REL14_BRNTAKEN
:
5359 case R_PPC64_REL14_BRTAKEN
:
5363 struct plt_entry
*ent
;
5365 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5366 if (ent
->addend
== rel
->r_addend
)
5370 if (ent
->plt
.refcount
> 0)
5371 ent
->plt
.refcount
-= 1;
5382 /* The maximum size of .sfpr. */
5383 #define SFPR_MAX (218*4)
5385 struct sfpr_def_parms
5387 const char name
[12];
5388 unsigned char lo
, hi
;
5389 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5390 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5393 /* Auto-generate _save*, _rest* functions in .sfpr. */
5396 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5398 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5400 size_t len
= strlen (parm
->name
);
5401 bfd_boolean writing
= FALSE
;
5404 memcpy (sym
, parm
->name
, len
);
5407 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5409 struct elf_link_hash_entry
*h
;
5411 sym
[len
+ 0] = i
/ 10 + '0';
5412 sym
[len
+ 1] = i
% 10 + '0';
5413 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5417 h
->root
.type
= bfd_link_hash_defined
;
5418 h
->root
.u
.def
.section
= htab
->sfpr
;
5419 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5422 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5424 if (htab
->sfpr
->contents
== NULL
)
5426 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5427 if (htab
->sfpr
->contents
== NULL
)
5433 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5435 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5437 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5438 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
5446 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5448 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5453 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5455 p
= savegpr0 (abfd
, p
, r
);
5456 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5458 bfd_put_32 (abfd
, BLR
, p
);
5463 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
5465 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5470 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5472 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5474 p
= restgpr0 (abfd
, p
, r
);
5475 bfd_put_32 (abfd
, MTLR_R0
, p
);
5479 p
= restgpr0 (abfd
, p
, 30);
5480 p
= restgpr0 (abfd
, p
, 31);
5482 bfd_put_32 (abfd
, BLR
, p
);
5487 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5489 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5494 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5496 p
= savegpr1 (abfd
, p
, r
);
5497 bfd_put_32 (abfd
, BLR
, p
);
5502 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
5504 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5509 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5511 p
= restgpr1 (abfd
, p
, r
);
5512 bfd_put_32 (abfd
, BLR
, p
);
5517 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5519 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5524 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5526 p
= savefpr (abfd
, p
, r
);
5527 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
5529 bfd_put_32 (abfd
, BLR
, p
);
5534 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
5536 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
5541 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5543 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
5545 p
= restfpr (abfd
, p
, r
);
5546 bfd_put_32 (abfd
, MTLR_R0
, p
);
5550 p
= restfpr (abfd
, p
, 30);
5551 p
= restfpr (abfd
, p
, 31);
5553 bfd_put_32 (abfd
, BLR
, p
);
5558 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5560 p
= savefpr (abfd
, p
, r
);
5561 bfd_put_32 (abfd
, BLR
, p
);
5566 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5568 p
= restfpr (abfd
, p
, r
);
5569 bfd_put_32 (abfd
, BLR
, p
);
5574 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
5576 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5578 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
5583 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5585 p
= savevr (abfd
, p
, r
);
5586 bfd_put_32 (abfd
, BLR
, p
);
5591 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
5593 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
5595 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
5600 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
5602 p
= restvr (abfd
, p
, r
);
5603 bfd_put_32 (abfd
, BLR
, p
);
5607 /* Called via elf_link_hash_traverse to transfer dynamic linking
5608 information on function code symbol entries to their corresponding
5609 function descriptor symbol entries. */
5612 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
5614 struct bfd_link_info
*info
;
5615 struct ppc_link_hash_table
*htab
;
5616 struct plt_entry
*ent
;
5617 struct ppc_link_hash_entry
*fh
;
5618 struct ppc_link_hash_entry
*fdh
;
5619 bfd_boolean force_local
;
5621 fh
= (struct ppc_link_hash_entry
*) h
;
5622 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
5625 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
5626 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
5629 htab
= ppc_hash_table (info
);
5631 /* Resolve undefined references to dot-symbols as the value
5632 in the function descriptor, if we have one in a regular object.
5633 This is to satisfy cases like ".quad .foo". Calls to functions
5634 in dynamic objects are handled elsewhere. */
5635 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
5636 && fh
->was_undefined
5637 && (fh
->oh
->elf
.root
.type
== bfd_link_hash_defined
5638 || fh
->oh
->elf
.root
.type
== bfd_link_hash_defweak
)
5639 && get_opd_info (fh
->oh
->elf
.root
.u
.def
.section
) != NULL
5640 && opd_entry_value (fh
->oh
->elf
.root
.u
.def
.section
,
5641 fh
->oh
->elf
.root
.u
.def
.value
,
5642 &fh
->elf
.root
.u
.def
.section
,
5643 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
5645 fh
->elf
.root
.type
= fh
->oh
->elf
.root
.type
;
5646 fh
->elf
.forced_local
= 1;
5649 /* If this is a function code symbol, transfer dynamic linking
5650 information to the function descriptor symbol. */
5654 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5655 if (ent
->plt
.refcount
> 0)
5658 || fh
->elf
.root
.root
.string
[0] != '.'
5659 || fh
->elf
.root
.root
.string
[1] == '\0')
5662 /* Find the corresponding function descriptor symbol. Create it
5663 as undefined if necessary. */
5665 fdh
= get_fdh (fh
, htab
);
5667 while (fdh
->elf
.root
.type
== bfd_link_hash_indirect
5668 || fdh
->elf
.root
.type
== bfd_link_hash_warning
)
5669 fdh
= (struct ppc_link_hash_entry
*) fdh
->elf
.root
.u
.i
.link
;
5673 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
5674 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
5676 fdh
= make_fdh (info
, fh
);
5681 /* Fake function descriptors are made undefweak. If the function
5682 code symbol is strong undefined, make the fake sym the same.
5683 If the function code symbol is defined, then force the fake
5684 descriptor local; We can't support overriding of symbols in a
5685 shared library on a fake descriptor. */
5689 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
5691 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
5693 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
5694 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
5696 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
5697 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5699 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
5704 && !fdh
->elf
.forced_local
5706 || fdh
->elf
.def_dynamic
5707 || fdh
->elf
.ref_dynamic
5708 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
5709 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
5711 if (fdh
->elf
.dynindx
== -1)
5712 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
5714 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
5715 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
5716 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
5717 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
5718 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
5720 move_plt_plist (fh
, fdh
);
5721 fdh
->elf
.needs_plt
= 1;
5723 fdh
->is_func_descriptor
= 1;
5728 /* Now that the info is on the function descriptor, clear the
5729 function code sym info. Any function code syms for which we
5730 don't have a definition in a regular file, we force local.
5731 This prevents a shared library from exporting syms that have
5732 been imported from another library. Function code syms that
5733 are really in the library we must leave global to prevent the
5734 linker dragging in a definition from a static library. */
5735 force_local
= (!fh
->elf
.def_regular
5737 || !fdh
->elf
.def_regular
5738 || fdh
->elf
.forced_local
);
5739 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
5744 /* Called near the start of bfd_elf_size_dynamic_sections. We use
5745 this hook to a) provide some gcc support functions, and b) transfer
5746 dynamic linking information gathered so far on function code symbol
5747 entries, to their corresponding function descriptor symbol entries. */
5750 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
5751 struct bfd_link_info
*info
)
5753 struct ppc_link_hash_table
*htab
;
5755 const struct sfpr_def_parms funcs
[] =
5757 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
5758 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
5759 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
5760 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
5761 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
5762 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
5763 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
5764 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
5765 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
5766 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
5767 { "_savevr_", 20, 31, savevr
, savevr_tail
},
5768 { "_restvr_", 20, 31, restvr
, restvr_tail
}
5771 htab
= ppc_hash_table (info
);
5772 if (htab
->sfpr
== NULL
)
5773 /* We don't have any relocs. */
5776 /* Provide any missing _save* and _rest* functions. */
5777 htab
->sfpr
->size
= 0;
5778 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
5779 if (!sfpr_define (info
, &funcs
[i
]))
5782 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
5784 if (htab
->sfpr
->size
== 0)
5785 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
5790 /* Adjust a symbol defined by a dynamic object and referenced by a
5791 regular object. The current definition is in some section of the
5792 dynamic object, but we're not including those sections. We have to
5793 change the definition to something the rest of the link can
5797 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
5798 struct elf_link_hash_entry
*h
)
5800 struct ppc_link_hash_table
*htab
;
5802 unsigned int power_of_two
;
5804 htab
= ppc_hash_table (info
);
5806 /* Deal with function syms. */
5807 if (h
->type
== STT_FUNC
5810 /* Clear procedure linkage table information for any symbol that
5811 won't need a .plt entry. */
5812 struct plt_entry
*ent
;
5813 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5814 if (ent
->plt
.refcount
> 0)
5817 || SYMBOL_CALLS_LOCAL (info
, h
)
5818 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
5819 && h
->root
.type
== bfd_link_hash_undefweak
))
5821 h
->plt
.plist
= NULL
;
5826 h
->plt
.plist
= NULL
;
5828 /* If this is a weak symbol, and there is a real definition, the
5829 processor independent code will have arranged for us to see the
5830 real definition first, and we can just use the same value. */
5831 if (h
->u
.weakdef
!= NULL
)
5833 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
5834 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
5835 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
5836 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
5837 if (ELIMINATE_COPY_RELOCS
)
5838 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
5842 /* If we are creating a shared library, we must presume that the
5843 only references to the symbol are via the global offset table.
5844 For such cases we need not do anything here; the relocations will
5845 be handled correctly by relocate_section. */
5849 /* If there are no references to this symbol that do not use the
5850 GOT, we don't need to generate a copy reloc. */
5851 if (!h
->non_got_ref
)
5854 /* Don't generate a copy reloc for symbols defined in the executable. */
5855 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
5858 if (ELIMINATE_COPY_RELOCS
)
5860 struct ppc_link_hash_entry
* eh
;
5861 struct ppc_dyn_relocs
*p
;
5863 eh
= (struct ppc_link_hash_entry
*) h
;
5864 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
5866 s
= p
->sec
->output_section
;
5867 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
5871 /* If we didn't find any dynamic relocs in read-only sections, then
5872 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
5880 if (h
->plt
.plist
!= NULL
)
5882 /* We should never get here, but unfortunately there are versions
5883 of gcc out there that improperly (for this ABI) put initialized
5884 function pointers, vtable refs and suchlike in read-only
5885 sections. Allow them to proceed, but warn that this might
5886 break at runtime. */
5887 (*_bfd_error_handler
)
5888 (_("copy reloc against `%s' requires lazy plt linking; "
5889 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
5890 h
->root
.root
.string
);
5893 /* This is a reference to a symbol defined by a dynamic object which
5894 is not a function. */
5898 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
5899 h
->root
.root
.string
);
5903 /* We must allocate the symbol in our .dynbss section, which will
5904 become part of the .bss section of the executable. There will be
5905 an entry for this symbol in the .dynsym section. The dynamic
5906 object will contain position independent code, so all references
5907 from the dynamic object to this symbol will go through the global
5908 offset table. The dynamic linker will use the .dynsym entry to
5909 determine the address it must put in the global offset table, so
5910 both the dynamic object and the regular object will refer to the
5911 same memory location for the variable. */
5913 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
5914 to copy the initial value out of the dynamic object and into the
5915 runtime process image. We need to remember the offset into the
5916 .rela.bss section we are going to use. */
5917 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
5919 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
5923 /* We need to figure out the alignment required for this symbol. I
5924 have no idea how ELF linkers handle this. */
5925 power_of_two
= bfd_log2 (h
->size
);
5926 if (power_of_two
> 4)
5929 /* Apply the required alignment. */
5931 s
->size
= BFD_ALIGN (s
->size
, (bfd_size_type
) (1 << power_of_two
));
5932 if (power_of_two
> bfd_get_section_alignment (htab
->elf
.dynobj
, s
))
5934 if (! bfd_set_section_alignment (htab
->elf
.dynobj
, s
, power_of_two
))
5938 /* Define the symbol as being at this point in the section. */
5939 h
->root
.u
.def
.section
= s
;
5940 h
->root
.u
.def
.value
= s
->size
;
5942 /* Increment the section size to make room for the symbol. */
5948 /* If given a function descriptor symbol, hide both the function code
5949 sym and the descriptor. */
5951 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
5952 struct elf_link_hash_entry
*h
,
5953 bfd_boolean force_local
)
5955 struct ppc_link_hash_entry
*eh
;
5956 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
5958 eh
= (struct ppc_link_hash_entry
*) h
;
5959 if (eh
->is_func_descriptor
)
5961 struct ppc_link_hash_entry
*fh
= eh
->oh
;
5966 struct ppc_link_hash_table
*htab
;
5969 /* We aren't supposed to use alloca in BFD because on
5970 systems which do not have alloca the version in libiberty
5971 calls xmalloc, which might cause the program to crash
5972 when it runs out of memory. This function doesn't have a
5973 return status, so there's no way to gracefully return an
5974 error. So cheat. We know that string[-1] can be safely
5975 accessed; It's either a string in an ELF string table,
5976 or allocated in an objalloc structure. */
5978 p
= eh
->elf
.root
.root
.string
- 1;
5981 htab
= ppc_hash_table (info
);
5982 fh
= (struct ppc_link_hash_entry
*)
5983 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
5986 /* Unfortunately, if it so happens that the string we were
5987 looking for was allocated immediately before this string,
5988 then we overwrote the string terminator. That's the only
5989 reason the lookup should fail. */
5992 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
5993 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
5995 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
5996 fh
= (struct ppc_link_hash_entry
*)
5997 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6006 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6011 get_sym_h (struct elf_link_hash_entry
**hp
,
6012 Elf_Internal_Sym
**symp
,
6015 Elf_Internal_Sym
**locsymsp
,
6016 unsigned long r_symndx
,
6019 Elf_Internal_Shdr
*symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6021 if (r_symndx
>= symtab_hdr
->sh_info
)
6023 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6024 struct elf_link_hash_entry
*h
;
6026 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6027 while (h
->root
.type
== bfd_link_hash_indirect
6028 || h
->root
.type
== bfd_link_hash_warning
)
6029 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6037 if (symsecp
!= NULL
)
6039 asection
*symsec
= NULL
;
6040 if (h
->root
.type
== bfd_link_hash_defined
6041 || h
->root
.type
== bfd_link_hash_defweak
)
6042 symsec
= h
->root
.u
.def
.section
;
6046 if (tls_maskp
!= NULL
)
6048 struct ppc_link_hash_entry
*eh
;
6050 eh
= (struct ppc_link_hash_entry
*) h
;
6051 *tls_maskp
= &eh
->tls_mask
;
6056 Elf_Internal_Sym
*sym
;
6057 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6059 if (locsyms
== NULL
)
6061 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6062 if (locsyms
== NULL
)
6063 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6064 symtab_hdr
->sh_info
,
6065 0, NULL
, NULL
, NULL
);
6066 if (locsyms
== NULL
)
6068 *locsymsp
= locsyms
;
6070 sym
= locsyms
+ r_symndx
;
6078 if (symsecp
!= NULL
)
6080 asection
*symsec
= NULL
;
6081 if ((sym
->st_shndx
!= SHN_UNDEF
6082 && sym
->st_shndx
< SHN_LORESERVE
)
6083 || sym
->st_shndx
> SHN_HIRESERVE
)
6084 symsec
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6088 if (tls_maskp
!= NULL
)
6090 struct got_entry
**lgot_ents
;
6094 lgot_ents
= elf_local_got_ents (ibfd
);
6095 if (lgot_ents
!= NULL
)
6097 char *lgot_masks
= (char *) (lgot_ents
+ symtab_hdr
->sh_info
);
6098 tls_mask
= &lgot_masks
[r_symndx
];
6100 *tls_maskp
= tls_mask
;
6106 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6107 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6108 type suitable for optimization, and 1 otherwise. */
6111 get_tls_mask (char **tls_maskp
, unsigned long *toc_symndx
,
6112 Elf_Internal_Sym
**locsymsp
,
6113 const Elf_Internal_Rela
*rel
, bfd
*ibfd
)
6115 unsigned long r_symndx
;
6117 struct elf_link_hash_entry
*h
;
6118 Elf_Internal_Sym
*sym
;
6122 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6123 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6126 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6128 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6131 /* Look inside a TOC section too. */
6134 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6135 off
= h
->root
.u
.def
.value
;
6138 off
= sym
->st_value
;
6139 off
+= rel
->r_addend
;
6140 BFD_ASSERT (off
% 8 == 0);
6141 r_symndx
= ppc64_elf_section_data (sec
)->u
.t_symndx
[off
/ 8];
6142 next_r
= ppc64_elf_section_data (sec
)->u
.t_symndx
[off
/ 8 + 1];
6143 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6145 if (toc_symndx
!= NULL
)
6146 *toc_symndx
= r_symndx
;
6148 || ((h
->root
.type
== bfd_link_hash_defined
6149 || h
->root
.type
== bfd_link_hash_defweak
)
6150 && !h
->def_dynamic
))
6151 && (next_r
== -1 || next_r
== -2))
6156 /* Adjust all global syms defined in opd sections. In gcc generated
6157 code for the old ABI, these will already have been done. */
6160 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6162 struct ppc_link_hash_entry
*eh
;
6166 if (h
->root
.type
== bfd_link_hash_indirect
)
6169 if (h
->root
.type
== bfd_link_hash_warning
)
6170 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6172 if (h
->root
.type
!= bfd_link_hash_defined
6173 && h
->root
.type
!= bfd_link_hash_defweak
)
6176 eh
= (struct ppc_link_hash_entry
*) h
;
6177 if (eh
->adjust_done
)
6180 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6181 opd_adjust
= get_opd_info (sym_sec
);
6182 if (opd_adjust
!= NULL
)
6184 long adjust
= opd_adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6187 /* This entry has been deleted. */
6188 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6191 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6192 if (elf_discarded_section (dsec
))
6194 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6198 eh
->elf
.root
.u
.def
.value
= 0;
6199 eh
->elf
.root
.u
.def
.section
= dsec
;
6202 eh
->elf
.root
.u
.def
.value
+= adjust
;
6203 eh
->adjust_done
= 1;
6208 /* Handles decrementing dynamic reloc counts for the reloc specified by
6209 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6210 have already been determined. */
6213 dec_dynrel_count (bfd_vma r_info
,
6215 struct bfd_link_info
*info
,
6216 Elf_Internal_Sym
**local_syms
,
6217 struct elf_link_hash_entry
*h
,
6220 enum elf_ppc64_reloc_type r_type
;
6221 struct ppc_dyn_relocs
*p
;
6222 struct ppc_dyn_relocs
**pp
;
6224 /* Can this reloc be dynamic? This switch, and later tests here
6225 should be kept in sync with the code in check_relocs. */
6226 r_type
= ELF64_R_TYPE (r_info
);
6232 case R_PPC64_TPREL16
:
6233 case R_PPC64_TPREL16_LO
:
6234 case R_PPC64_TPREL16_HI
:
6235 case R_PPC64_TPREL16_HA
:
6236 case R_PPC64_TPREL16_DS
:
6237 case R_PPC64_TPREL16_LO_DS
:
6238 case R_PPC64_TPREL16_HIGHER
:
6239 case R_PPC64_TPREL16_HIGHERA
:
6240 case R_PPC64_TPREL16_HIGHEST
:
6241 case R_PPC64_TPREL16_HIGHESTA
:
6245 case R_PPC64_TPREL64
:
6246 case R_PPC64_DTPMOD64
:
6247 case R_PPC64_DTPREL64
:
6248 case R_PPC64_ADDR64
:
6252 case R_PPC64_ADDR14
:
6253 case R_PPC64_ADDR14_BRNTAKEN
:
6254 case R_PPC64_ADDR14_BRTAKEN
:
6255 case R_PPC64_ADDR16
:
6256 case R_PPC64_ADDR16_DS
:
6257 case R_PPC64_ADDR16_HA
:
6258 case R_PPC64_ADDR16_HI
:
6259 case R_PPC64_ADDR16_HIGHER
:
6260 case R_PPC64_ADDR16_HIGHERA
:
6261 case R_PPC64_ADDR16_HIGHEST
:
6262 case R_PPC64_ADDR16_HIGHESTA
:
6263 case R_PPC64_ADDR16_LO
:
6264 case R_PPC64_ADDR16_LO_DS
:
6265 case R_PPC64_ADDR24
:
6266 case R_PPC64_ADDR32
:
6267 case R_PPC64_UADDR16
:
6268 case R_PPC64_UADDR32
:
6269 case R_PPC64_UADDR64
:
6274 if (local_syms
!= NULL
)
6276 unsigned long r_symndx
;
6277 Elf_Internal_Sym
*sym
;
6278 bfd
*ibfd
= sec
->owner
;
6280 r_symndx
= ELF64_R_SYM (r_info
);
6281 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6286 && (MUST_BE_DYN_RELOC (r_type
)
6289 || h
->root
.type
== bfd_link_hash_defweak
6290 || !h
->def_regular
))))
6291 || (ELIMINATE_COPY_RELOCS
6294 && (h
->root
.type
== bfd_link_hash_defweak
6295 || !h
->def_regular
)))
6301 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6304 if (sym_sec
!= NULL
)
6306 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6307 pp
= (struct ppc_dyn_relocs
**) vpp
;
6311 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6312 pp
= (struct ppc_dyn_relocs
**) vpp
;
6315 /* elf_gc_sweep may have already removed all dyn relocs associated
6316 with local syms for a given section. Don't report a dynreloc
6322 while ((p
= *pp
) != NULL
)
6326 if (!MUST_BE_DYN_RELOC (r_type
))
6336 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6338 bfd_set_error (bfd_error_bad_value
);
6342 /* Remove unused Official Procedure Descriptor entries. Currently we
6343 only remove those associated with functions in discarded link-once
6344 sections, or weakly defined functions that have been overridden. It
6345 would be possible to remove many more entries for statically linked
6349 ppc64_elf_edit_opd (bfd
*obfd
, struct bfd_link_info
*info
,
6350 bfd_boolean no_opd_opt
,
6351 bfd_boolean non_overlapping
)
6354 bfd_boolean some_edited
= FALSE
;
6355 asection
*need_pad
= NULL
;
6357 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6360 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6361 Elf_Internal_Shdr
*symtab_hdr
;
6362 Elf_Internal_Sym
*local_syms
;
6363 struct elf_link_hash_entry
**sym_hashes
;
6367 bfd_boolean need_edit
, add_aux_fields
;
6368 bfd_size_type cnt_16b
= 0;
6370 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6371 if (sec
== NULL
|| sec
->size
== 0)
6374 amt
= sec
->size
* sizeof (long) / 8;
6375 opd_adjust
= get_opd_info (sec
);
6376 if (opd_adjust
== NULL
)
6378 /* check_relocs hasn't been called. Must be a ld -r link
6379 or --just-symbols object. */
6380 opd_adjust
= bfd_alloc (obfd
, amt
);
6381 if (opd_adjust
== NULL
)
6383 ppc64_elf_section_data (sec
)->u
.opd_adjust
= opd_adjust
;
6384 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
6385 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
6387 memset (opd_adjust
, 0, amt
);
6392 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6395 if (sec
->output_section
== bfd_abs_section_ptr
)
6398 /* Look through the section relocs. */
6399 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6403 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
6404 sym_hashes
= elf_sym_hashes (ibfd
);
6406 /* Read the relocations. */
6407 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6409 if (relstart
== NULL
)
6412 /* First run through the relocs to check they are sane, and to
6413 determine whether we need to edit this opd section. */
6417 relend
= relstart
+ sec
->reloc_count
;
6418 for (rel
= relstart
; rel
< relend
; )
6420 enum elf_ppc64_reloc_type r_type
;
6421 unsigned long r_symndx
;
6423 struct elf_link_hash_entry
*h
;
6424 Elf_Internal_Sym
*sym
;
6426 /* .opd contains a regular array of 16 or 24 byte entries. We're
6427 only interested in the reloc pointing to a function entry
6429 if (rel
->r_offset
!= offset
6430 || rel
+ 1 >= relend
6431 || (rel
+ 1)->r_offset
!= offset
+ 8)
6433 /* If someone messes with .opd alignment then after a
6434 "ld -r" we might have padding in the middle of .opd.
6435 Also, there's nothing to prevent someone putting
6436 something silly in .opd with the assembler. No .opd
6437 optimization for them! */
6439 (*_bfd_error_handler
)
6440 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6445 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6446 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6448 (*_bfd_error_handler
)
6449 (_("%B: unexpected reloc type %u in .opd section"),
6455 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6456 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6460 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6462 const char *sym_name
;
6464 sym_name
= h
->root
.root
.string
;
6466 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6469 (*_bfd_error_handler
)
6470 (_("%B: undefined sym `%s' in .opd section"),
6476 /* opd entries are always for functions defined in the
6477 current input bfd. If the symbol isn't defined in the
6478 input bfd, then we won't be using the function in this
6479 bfd; It must be defined in a linkonce section in another
6480 bfd, or is weak. It's also possible that we are
6481 discarding the function due to a linker script /DISCARD/,
6482 which we test for via the output_section. */
6483 if (sym_sec
->owner
!= ibfd
6484 || sym_sec
->output_section
== bfd_abs_section_ptr
)
6489 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
6491 if (sec
->size
== offset
+ 24)
6496 if (rel
== relend
&& sec
->size
== offset
+ 16)
6504 if (rel
->r_offset
== offset
+ 24)
6506 else if (rel
->r_offset
!= offset
+ 16)
6508 else if (rel
+ 1 < relend
6509 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
6510 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
6515 else if (rel
+ 2 < relend
6516 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
6517 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
6526 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
6528 if (need_edit
|| add_aux_fields
)
6530 Elf_Internal_Rela
*write_rel
;
6531 bfd_byte
*rptr
, *wptr
;
6532 bfd_byte
*new_contents
= NULL
;
6536 /* This seems a waste of time as input .opd sections are all
6537 zeros as generated by gcc, but I suppose there's no reason
6538 this will always be so. We might start putting something in
6539 the third word of .opd entries. */
6540 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
6543 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
6548 if (local_syms
!= NULL
6549 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6551 if (elf_section_data (sec
)->relocs
!= relstart
)
6555 sec
->contents
= loc
;
6556 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6559 elf_section_data (sec
)->relocs
= relstart
;
6561 new_contents
= sec
->contents
;
6564 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
6565 if (new_contents
== NULL
)
6569 wptr
= new_contents
;
6570 rptr
= sec
->contents
;
6572 write_rel
= relstart
;
6576 for (rel
= relstart
; rel
< relend
; rel
++)
6578 unsigned long r_symndx
;
6580 struct elf_link_hash_entry
*h
;
6581 Elf_Internal_Sym
*sym
;
6583 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6584 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6588 if (rel
->r_offset
== offset
)
6590 struct ppc_link_hash_entry
*fdh
= NULL
;
6592 /* See if the .opd entry is full 24 byte or
6593 16 byte (with fd_aux entry overlapped with next
6596 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
6597 || (rel
+ 3 < relend
6598 && rel
[2].r_offset
== offset
+ 16
6599 && rel
[3].r_offset
== offset
+ 24
6600 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
6601 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
6605 && h
->root
.root
.string
[0] == '.')
6607 fdh
= get_fdh ((struct ppc_link_hash_entry
*) h
,
6608 ppc_hash_table (info
));
6610 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
6611 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
6615 skip
= (sym_sec
->owner
!= ibfd
6616 || sym_sec
->output_section
== bfd_abs_section_ptr
);
6619 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
6621 /* Arrange for the function descriptor sym
6623 fdh
->elf
.root
.u
.def
.value
= 0;
6624 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
6626 opd_adjust
[rel
->r_offset
/ 8] = -1;
6630 /* We'll be keeping this opd entry. */
6634 /* Redefine the function descriptor symbol to
6635 this location in the opd section. It is
6636 necessary to update the value here rather
6637 than using an array of adjustments as we do
6638 for local symbols, because various places
6639 in the generic ELF code use the value
6640 stored in u.def.value. */
6641 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
6642 fdh
->adjust_done
= 1;
6645 /* Local syms are a bit tricky. We could
6646 tweak them as they can be cached, but
6647 we'd need to look through the local syms
6648 for the function descriptor sym which we
6649 don't have at the moment. So keep an
6650 array of adjustments. */
6651 opd_adjust
[rel
->r_offset
/ 8]
6652 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
6655 memcpy (wptr
, rptr
, opd_ent_size
);
6656 wptr
+= opd_ent_size
;
6657 if (add_aux_fields
&& opd_ent_size
== 16)
6659 memset (wptr
, '\0', 8);
6663 rptr
+= opd_ent_size
;
6664 offset
+= opd_ent_size
;
6670 && !info
->relocatable
6671 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
6677 /* We need to adjust any reloc offsets to point to the
6678 new opd entries. While we're at it, we may as well
6679 remove redundant relocs. */
6680 rel
->r_offset
+= opd_adjust
[(offset
- opd_ent_size
) / 8];
6681 if (write_rel
!= rel
)
6682 memcpy (write_rel
, rel
, sizeof (*rel
));
6687 sec
->size
= wptr
- new_contents
;
6688 sec
->reloc_count
= write_rel
- relstart
;
6691 free (sec
->contents
);
6692 sec
->contents
= new_contents
;
6695 /* Fudge the header size too, as this is used later in
6696 elf_bfd_final_link if we are emitting relocs. */
6697 elf_section_data (sec
)->rel_hdr
.sh_size
6698 = sec
->reloc_count
* elf_section_data (sec
)->rel_hdr
.sh_entsize
;
6699 BFD_ASSERT (elf_section_data (sec
)->rel_hdr2
== NULL
);
6702 else if (elf_section_data (sec
)->relocs
!= relstart
)
6705 if (local_syms
!= NULL
6706 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
6708 if (!info
->keep_memory
)
6711 symtab_hdr
->contents
= (unsigned char *) local_syms
;
6716 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
6718 /* If we are doing a final link and the last .opd entry is just 16 byte
6719 long, add a 8 byte padding after it. */
6720 if (need_pad
!= NULL
&& !info
->relocatable
)
6724 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
6726 BFD_ASSERT (need_pad
->size
> 0);
6728 p
= bfd_malloc (need_pad
->size
+ 8);
6732 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
6733 p
, 0, need_pad
->size
))
6736 need_pad
->contents
= p
;
6737 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
6741 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
6745 need_pad
->contents
= p
;
6748 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
6749 need_pad
->size
+= 8;
6755 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
6758 ppc64_elf_tls_setup (bfd
*obfd
, struct bfd_link_info
*info
)
6760 struct ppc_link_hash_table
*htab
;
6762 htab
= ppc_hash_table (info
);
6763 if (htab
->tls_get_addr
!= NULL
)
6765 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr
;
6767 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6768 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6769 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6771 htab
->tls_get_addr
= h
;
6773 if (htab
->tls_get_addr_fd
== NULL
6775 && h
->oh
->is_func_descriptor
6776 && (h
->oh
->elf
.root
.type
== bfd_link_hash_defined
6777 || h
->oh
->elf
.root
.type
== bfd_link_hash_defweak
))
6778 htab
->tls_get_addr_fd
= h
->oh
;
6781 if (htab
->tls_get_addr_fd
!= NULL
)
6783 struct ppc_link_hash_entry
*h
= htab
->tls_get_addr_fd
;
6785 while (h
->elf
.root
.type
== bfd_link_hash_indirect
6786 || h
->elf
.root
.type
== bfd_link_hash_warning
)
6787 h
= (struct ppc_link_hash_entry
*) h
->elf
.root
.u
.i
.link
;
6789 htab
->tls_get_addr_fd
= h
;
6792 return _bfd_elf_tls_setup (obfd
, info
);
6795 /* Run through all the TLS relocs looking for optimization
6796 opportunities. The linker has been hacked (see ppc64elf.em) to do
6797 a preliminary section layout so that we know the TLS segment
6798 offsets. We can't optimize earlier because some optimizations need
6799 to know the tp offset, and we need to optimize before allocating
6800 dynamic relocations. */
6803 ppc64_elf_tls_optimize (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
6807 struct ppc_link_hash_table
*htab
;
6809 if (info
->relocatable
|| info
->shared
)
6812 htab
= ppc_hash_table (info
);
6813 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6815 Elf_Internal_Sym
*locsyms
= NULL
;
6816 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
6817 unsigned char *toc_ref
= NULL
;
6819 /* Look at all the sections for this file, with TOC last. */
6820 for (sec
= (ibfd
->sections
== toc
&& toc
&& toc
->next
? toc
->next
6823 sec
= (sec
== toc
? NULL
6824 : sec
->next
== NULL
? toc
6825 : sec
->next
== toc
&& toc
->next
? toc
->next
6827 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
6829 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6830 int expecting_tls_get_addr
;
6831 long toc_ref_index
= 0;
6833 /* Read the relocations. */
6834 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6836 if (relstart
== NULL
)
6839 expecting_tls_get_addr
= 0;
6840 relend
= relstart
+ sec
->reloc_count
;
6841 for (rel
= relstart
; rel
< relend
; rel
++)
6843 enum elf_ppc64_reloc_type r_type
;
6844 unsigned long r_symndx
;
6845 struct elf_link_hash_entry
*h
;
6846 Elf_Internal_Sym
*sym
;
6849 char tls_set
, tls_clear
, tls_type
= 0;
6851 bfd_boolean ok_tprel
, is_local
;
6853 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6854 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
6858 if (elf_section_data (sec
)->relocs
!= relstart
)
6860 if (toc_ref
!= NULL
)
6863 && (elf_tdata (ibfd
)->symtab_hdr
.contents
6864 != (unsigned char *) locsyms
))
6871 if (h
->root
.type
!= bfd_link_hash_defined
6872 && h
->root
.type
!= bfd_link_hash_defweak
)
6874 value
= h
->root
.u
.def
.value
;
6877 /* Symbols referenced by TLS relocs must be of type
6878 STT_TLS. So no need for .opd local sym adjust. */
6879 value
= sym
->st_value
;
6887 value
+= sym_sec
->output_offset
;
6888 value
+= sym_sec
->output_section
->vma
;
6889 value
-= htab
->elf
.tls_sec
->vma
;
6890 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
6891 < (bfd_vma
) 1 << 32);
6894 r_type
= ELF64_R_TYPE (rel
->r_info
);
6897 case R_PPC64_GOT_TLSLD16
:
6898 case R_PPC64_GOT_TLSLD16_LO
:
6899 case R_PPC64_GOT_TLSLD16_HI
:
6900 case R_PPC64_GOT_TLSLD16_HA
:
6901 /* These relocs should never be against a symbol
6902 defined in a shared lib. Leave them alone if
6903 that turns out to be the case. */
6904 ppc64_tlsld_got (ibfd
)->refcount
-= 1;
6911 tls_type
= TLS_TLS
| TLS_LD
;
6912 expecting_tls_get_addr
= 1;
6915 case R_PPC64_GOT_TLSGD16
:
6916 case R_PPC64_GOT_TLSGD16_LO
:
6917 case R_PPC64_GOT_TLSGD16_HI
:
6918 case R_PPC64_GOT_TLSGD16_HA
:
6924 tls_set
= TLS_TLS
| TLS_TPRELGD
;
6926 tls_type
= TLS_TLS
| TLS_GD
;
6927 expecting_tls_get_addr
= 1;
6930 case R_PPC64_GOT_TPREL16_DS
:
6931 case R_PPC64_GOT_TPREL16_LO_DS
:
6932 case R_PPC64_GOT_TPREL16_HI
:
6933 case R_PPC64_GOT_TPREL16_HA
:
6934 expecting_tls_get_addr
= 0;
6939 tls_clear
= TLS_TPREL
;
6940 tls_type
= TLS_TLS
| TLS_TPREL
;
6947 case R_PPC64_REL14_BRTAKEN
:
6948 case R_PPC64_REL14_BRNTAKEN
:
6951 && (h
== &htab
->tls_get_addr
->elf
6952 || h
== &htab
->tls_get_addr_fd
->elf
))
6954 if (!expecting_tls_get_addr
6956 && ((ELF64_R_TYPE (rel
[-1].r_info
)
6958 || (ELF64_R_TYPE (rel
[-1].r_info
)
6959 == R_PPC64_TOC16_LO
)))
6961 /* Check for toc tls entries. */
6965 retval
= get_tls_mask (&toc_tls
, NULL
, &locsyms
,
6969 if (retval
> 1 && toc_tls
!= NULL
)
6971 expecting_tls_get_addr
= 1;
6972 if (toc_ref
!= NULL
)
6973 toc_ref
[toc_ref_index
] = 1;
6977 if (expecting_tls_get_addr
)
6979 struct plt_entry
*ent
;
6980 for (ent
= h
->plt
.plist
; ent
; ent
= ent
->next
)
6981 if (ent
->addend
== 0)
6983 if (ent
->plt
.refcount
> 0)
6984 ent
->plt
.refcount
-= 1;
6989 expecting_tls_get_addr
= 0;
6993 case R_PPC64_TOC16_LO
:
6995 expecting_tls_get_addr
= 0;
6996 if (sym_sec
== toc
&& toc
!= NULL
)
6998 /* Mark this toc entry as referenced by a TLS
6999 code sequence. We can do that now in the
7000 case of R_PPC64_TLS, and after checking for
7001 tls_get_addr for the TOC16 relocs. */
7002 if (toc_ref
== NULL
)
7004 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7005 if (toc_ref
== NULL
)
7009 value
= h
->root
.u
.def
.value
;
7011 value
= sym
->st_value
;
7012 value
+= rel
->r_addend
;
7013 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7014 toc_ref_index
= value
/ 8;
7015 if (r_type
== R_PPC64_TLS
)
7016 toc_ref
[toc_ref_index
] = 1;
7020 case R_PPC64_TPREL64
:
7021 expecting_tls_get_addr
= 0;
7024 || !toc_ref
[rel
->r_offset
/ 8])
7029 tls_set
= TLS_EXPLICIT
;
7030 tls_clear
= TLS_TPREL
;
7036 case R_PPC64_DTPMOD64
:
7037 expecting_tls_get_addr
= 0;
7040 || !toc_ref
[rel
->r_offset
/ 8])
7042 if (rel
+ 1 < relend
7044 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7045 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7049 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7052 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7061 tls_set
= TLS_EXPLICIT
;
7067 expecting_tls_get_addr
= 0;
7071 if ((tls_set
& TLS_EXPLICIT
) == 0)
7073 struct got_entry
*ent
;
7075 /* Adjust got entry for this reloc. */
7079 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7081 for (; ent
!= NULL
; ent
= ent
->next
)
7082 if (ent
->addend
== rel
->r_addend
7083 && ent
->owner
== ibfd
7084 && ent
->tls_type
== tls_type
)
7091 /* We managed to get rid of a got entry. */
7092 if (ent
->got
.refcount
> 0)
7093 ent
->got
.refcount
-= 1;
7098 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7099 we'll lose one or two dyn relocs. */
7100 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7104 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7106 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7112 *tls_mask
|= tls_set
;
7113 *tls_mask
&= ~tls_clear
;
7116 if (elf_section_data (sec
)->relocs
!= relstart
)
7120 if (toc_ref
!= NULL
)
7124 && (elf_tdata (ibfd
)->symtab_hdr
.contents
7125 != (unsigned char *) locsyms
))
7127 if (!info
->keep_memory
)
7130 elf_tdata (ibfd
)->symtab_hdr
.contents
= (unsigned char *) locsyms
;
7136 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7137 the values of any global symbols in a toc section that has been
7138 edited. Globals in toc sections should be a rarity, so this function
7139 sets a flag if any are found in toc sections other than the one just
7140 edited, so that futher hash table traversals can be avoided. */
7142 struct adjust_toc_info
7145 unsigned long *skip
;
7146 bfd_boolean global_toc_syms
;
7150 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7152 struct ppc_link_hash_entry
*eh
;
7153 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7155 if (h
->root
.type
== bfd_link_hash_indirect
)
7158 if (h
->root
.type
== bfd_link_hash_warning
)
7159 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7161 if (h
->root
.type
!= bfd_link_hash_defined
7162 && h
->root
.type
!= bfd_link_hash_defweak
)
7165 eh
= (struct ppc_link_hash_entry
*) h
;
7166 if (eh
->adjust_done
)
7169 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7171 unsigned long skip
= toc_inf
->skip
[eh
->elf
.root
.u
.def
.value
>> 3];
7172 if (skip
!= (unsigned long) -1)
7173 eh
->elf
.root
.u
.def
.value
-= skip
;
7176 (*_bfd_error_handler
)
7177 (_("%s defined in removed toc entry"), eh
->elf
.root
.root
.string
);
7178 eh
->elf
.root
.u
.def
.section
= &bfd_abs_section
;
7179 eh
->elf
.root
.u
.def
.value
= 0;
7181 eh
->adjust_done
= 1;
7183 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7184 toc_inf
->global_toc_syms
= TRUE
;
7189 /* Examine all relocs referencing .toc sections in order to remove
7190 unused .toc entries. */
7193 ppc64_elf_edit_toc (bfd
*obfd ATTRIBUTE_UNUSED
, struct bfd_link_info
*info
)
7196 struct adjust_toc_info toc_inf
;
7198 toc_inf
.global_toc_syms
= TRUE
;
7199 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7201 asection
*toc
, *sec
;
7202 Elf_Internal_Shdr
*symtab_hdr
;
7203 Elf_Internal_Sym
*local_syms
;
7204 struct elf_link_hash_entry
**sym_hashes
;
7205 Elf_Internal_Rela
*relstart
, *rel
;
7206 unsigned long *skip
, *drop
;
7207 unsigned char *used
;
7208 unsigned char *keep
, last
, some_unused
;
7210 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7213 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7214 || elf_discarded_section (toc
))
7218 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7219 sym_hashes
= elf_sym_hashes (ibfd
);
7221 /* Look at sections dropped from the final link. */
7224 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7226 if (sec
->reloc_count
== 0
7227 || !elf_discarded_section (sec
)
7228 || get_opd_info (sec
)
7229 || (sec
->flags
& SEC_ALLOC
) == 0
7230 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7233 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7234 if (relstart
== NULL
)
7237 /* Run through the relocs to see which toc entries might be
7239 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7241 enum elf_ppc64_reloc_type r_type
;
7242 unsigned long r_symndx
;
7244 struct elf_link_hash_entry
*h
;
7245 Elf_Internal_Sym
*sym
;
7248 r_type
= ELF64_R_TYPE (rel
->r_info
);
7255 case R_PPC64_TOC16_LO
:
7256 case R_PPC64_TOC16_HI
:
7257 case R_PPC64_TOC16_HA
:
7258 case R_PPC64_TOC16_DS
:
7259 case R_PPC64_TOC16_LO_DS
:
7263 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7264 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7272 val
= h
->root
.u
.def
.value
;
7274 val
= sym
->st_value
;
7275 val
+= rel
->r_addend
;
7277 if (val
>= toc
->size
)
7280 /* Anything in the toc ought to be aligned to 8 bytes.
7281 If not, don't mark as unused. */
7287 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 7) / 8);
7295 if (elf_section_data (sec
)->relocs
!= relstart
)
7302 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
7306 if (local_syms
!= NULL
7307 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7311 && elf_section_data (sec
)->relocs
!= relstart
)
7318 /* Now check all kept sections that might reference the toc.
7319 Check the toc itself last. */
7320 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
7323 sec
= (sec
== toc
? NULL
7324 : sec
->next
== NULL
? toc
7325 : sec
->next
== toc
&& toc
->next
? toc
->next
7330 if (sec
->reloc_count
== 0
7331 || elf_discarded_section (sec
)
7332 || get_opd_info (sec
)
7333 || (sec
->flags
& SEC_ALLOC
) == 0
7334 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7337 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, TRUE
);
7338 if (relstart
== NULL
)
7341 /* Mark toc entries referenced as used. */
7344 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7346 enum elf_ppc64_reloc_type r_type
;
7347 unsigned long r_symndx
;
7349 struct elf_link_hash_entry
*h
;
7350 Elf_Internal_Sym
*sym
;
7353 r_type
= ELF64_R_TYPE (rel
->r_info
);
7357 case R_PPC64_TOC16_LO
:
7358 case R_PPC64_TOC16_HI
:
7359 case R_PPC64_TOC16_HA
:
7360 case R_PPC64_TOC16_DS
:
7361 case R_PPC64_TOC16_LO_DS
:
7362 /* In case we're taking addresses of toc entries. */
7363 case R_PPC64_ADDR64
:
7370 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7371 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7382 val
= h
->root
.u
.def
.value
;
7384 val
= sym
->st_value
;
7385 val
+= rel
->r_addend
;
7387 if (val
>= toc
->size
)
7390 /* For the toc section, we only mark as used if
7391 this entry itself isn't unused. */
7394 && (used
[rel
->r_offset
>> 3]
7395 || !skip
[rel
->r_offset
>> 3]))
7396 /* Do all the relocs again, to catch reference
7405 /* Merge the used and skip arrays. Assume that TOC
7406 doublewords not appearing as either used or unused belong
7407 to to an entry more than one doubleword in size. */
7408 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
7409 drop
< skip
+ (toc
->size
+ 7) / 8;
7430 bfd_byte
*contents
, *src
;
7433 /* Shuffle the toc contents, and at the same time convert the
7434 skip array from booleans into offsets. */
7435 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
7438 elf_section_data (toc
)->this_hdr
.contents
= contents
;
7440 for (src
= contents
, off
= 0, drop
= skip
;
7441 src
< contents
+ toc
->size
;
7446 *drop
= (unsigned long) -1;
7452 memcpy (src
- off
, src
, 8);
7455 toc
->rawsize
= toc
->size
;
7456 toc
->size
= src
- contents
- off
;
7458 if (toc
->reloc_count
!= 0)
7460 Elf_Internal_Rela
*wrel
;
7463 /* Read toc relocs. */
7464 relstart
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
7466 if (relstart
== NULL
)
7469 /* Remove unused toc relocs, and adjust those we keep. */
7471 for (rel
= relstart
; rel
< relstart
+ toc
->reloc_count
; ++rel
)
7472 if (skip
[rel
->r_offset
>> 3] != (unsigned long) -1)
7474 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
7475 wrel
->r_info
= rel
->r_info
;
7476 wrel
->r_addend
= rel
->r_addend
;
7479 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
7480 &local_syms
, NULL
, NULL
))
7483 toc
->reloc_count
= wrel
- relstart
;
7484 sz
= elf_section_data (toc
)->rel_hdr
.sh_entsize
;
7485 elf_section_data (toc
)->rel_hdr
.sh_size
= toc
->reloc_count
* sz
;
7486 BFD_ASSERT (elf_section_data (toc
)->rel_hdr2
== NULL
);
7489 /* Adjust addends for relocs against the toc section sym. */
7490 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7492 if (sec
->reloc_count
== 0
7493 || elf_discarded_section (sec
))
7496 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7498 if (relstart
== NULL
)
7501 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7503 enum elf_ppc64_reloc_type r_type
;
7504 unsigned long r_symndx
;
7506 struct elf_link_hash_entry
*h
;
7507 Elf_Internal_Sym
*sym
;
7509 r_type
= ELF64_R_TYPE (rel
->r_info
);
7516 case R_PPC64_TOC16_LO
:
7517 case R_PPC64_TOC16_HI
:
7518 case R_PPC64_TOC16_HA
:
7519 case R_PPC64_TOC16_DS
:
7520 case R_PPC64_TOC16_LO_DS
:
7521 case R_PPC64_ADDR64
:
7525 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7526 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7530 if (sym_sec
!= toc
|| h
!= NULL
|| sym
->st_value
!= 0)
7533 rel
->r_addend
-= skip
[rel
->r_addend
>> 3];
7537 /* We shouldn't have local or global symbols defined in the TOC,
7538 but handle them anyway. */
7539 if (local_syms
!= NULL
)
7541 Elf_Internal_Sym
*sym
;
7543 for (sym
= local_syms
;
7544 sym
< local_syms
+ symtab_hdr
->sh_info
;
7546 if (sym
->st_shndx
!= SHN_UNDEF
7547 && (sym
->st_shndx
< SHN_LORESERVE
7548 || sym
->st_shndx
> SHN_HIRESERVE
)
7549 && sym
->st_value
!= 0
7550 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
7552 if (skip
[sym
->st_value
>> 3] != (unsigned long) -1)
7553 sym
->st_value
-= skip
[sym
->st_value
>> 3];
7556 (*_bfd_error_handler
)
7557 (_("%s defined in removed toc entry"),
7558 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7561 sym
->st_shndx
= SHN_ABS
;
7563 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7567 /* Finally, adjust any global syms defined in the toc. */
7568 if (toc_inf
.global_toc_syms
)
7571 toc_inf
.skip
= skip
;
7572 toc_inf
.global_toc_syms
= FALSE
;
7573 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
7578 if (local_syms
!= NULL
7579 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7581 if (!info
->keep_memory
)
7584 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7592 /* Allocate space in .plt, .got and associated reloc sections for
7596 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7598 struct bfd_link_info
*info
;
7599 struct ppc_link_hash_table
*htab
;
7601 struct ppc_link_hash_entry
*eh
;
7602 struct ppc_dyn_relocs
*p
;
7603 struct got_entry
*gent
;
7605 if (h
->root
.type
== bfd_link_hash_indirect
)
7608 if (h
->root
.type
== bfd_link_hash_warning
)
7609 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7611 info
= (struct bfd_link_info
*) inf
;
7612 htab
= ppc_hash_table (info
);
7614 if (htab
->elf
.dynamic_sections_created
7616 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
7618 struct plt_entry
*pent
;
7619 bfd_boolean doneone
= FALSE
;
7620 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
7621 if (pent
->plt
.refcount
> 0)
7623 /* If this is the first .plt entry, make room for the special
7627 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
7629 pent
->plt
.offset
= s
->size
;
7631 /* Make room for this entry. */
7632 s
->size
+= PLT_ENTRY_SIZE
;
7634 /* Make room for the .glink code. */
7637 s
->size
+= GLINK_CALL_STUB_SIZE
;
7638 /* We need bigger stubs past index 32767. */
7639 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
7643 /* We also need to make an entry in the .rela.plt section. */
7645 s
->size
+= sizeof (Elf64_External_Rela
);
7649 pent
->plt
.offset
= (bfd_vma
) -1;
7652 h
->plt
.plist
= NULL
;
7658 h
->plt
.plist
= NULL
;
7662 eh
= (struct ppc_link_hash_entry
*) h
;
7663 /* Run through the TLS GD got entries first if we're changing them
7665 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
7666 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7667 if (gent
->got
.refcount
> 0
7668 && (gent
->tls_type
& TLS_GD
) != 0)
7670 /* This was a GD entry that has been converted to TPREL. If
7671 there happens to be a TPREL entry we can use that one. */
7672 struct got_entry
*ent
;
7673 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
7674 if (ent
->got
.refcount
> 0
7675 && (ent
->tls_type
& TLS_TPREL
) != 0
7676 && ent
->addend
== gent
->addend
7677 && ent
->owner
== gent
->owner
)
7679 gent
->got
.refcount
= 0;
7683 /* If not, then we'll be using our own TPREL entry. */
7684 if (gent
->got
.refcount
!= 0)
7685 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
7688 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
7689 if (gent
->got
.refcount
> 0)
7693 /* Make sure this symbol is output as a dynamic symbol.
7694 Undefined weak syms won't yet be marked as dynamic,
7695 nor will all TLS symbols. */
7696 if (h
->dynindx
== -1
7697 && !h
->forced_local
)
7699 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7703 if ((gent
->tls_type
& TLS_LD
) != 0
7706 gent
->got
.offset
= ppc64_tlsld_got (gent
->owner
)->offset
;
7710 s
= ppc64_elf_tdata (gent
->owner
)->got
;
7711 gent
->got
.offset
= s
->size
;
7713 += (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)) ? 16 : 8;
7714 dyn
= htab
->elf
.dynamic_sections_created
;
7716 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
7717 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
7718 || h
->root
.type
!= bfd_link_hash_undefweak
))
7719 ppc64_elf_tdata (gent
->owner
)->relgot
->size
7720 += (gent
->tls_type
& eh
->tls_mask
& TLS_GD
7721 ? 2 * sizeof (Elf64_External_Rela
)
7722 : sizeof (Elf64_External_Rela
));
7725 gent
->got
.offset
= (bfd_vma
) -1;
7727 if (eh
->dyn_relocs
== NULL
)
7730 /* In the shared -Bsymbolic case, discard space allocated for
7731 dynamic pc-relative relocs against symbols which turn out to be
7732 defined in regular objects. For the normal shared case, discard
7733 space for relocs that have become local due to symbol visibility
7738 /* Relocs that use pc_count are those that appear on a call insn,
7739 or certain REL relocs (see MUST_BE_DYN_RELOC) that can be
7740 generated via assembly. We want calls to protected symbols to
7741 resolve directly to the function rather than going via the plt.
7742 If people want function pointer comparisons to work as expected
7743 then they should avoid writing weird assembly. */
7744 if (SYMBOL_CALLS_LOCAL (info
, h
))
7746 struct ppc_dyn_relocs
**pp
;
7748 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
7750 p
->count
-= p
->pc_count
;
7759 /* Also discard relocs on undefined weak syms with non-default
7761 if (eh
->dyn_relocs
!= NULL
7762 && h
->root
.type
== bfd_link_hash_undefweak
)
7764 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
7765 eh
->dyn_relocs
= NULL
;
7767 /* Make sure this symbol is output as a dynamic symbol.
7768 Undefined weak syms won't yet be marked as dynamic. */
7769 else if (h
->dynindx
== -1
7770 && !h
->forced_local
)
7772 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7777 else if (ELIMINATE_COPY_RELOCS
)
7779 /* For the non-shared case, discard space for relocs against
7780 symbols which turn out to need copy relocs or are not
7787 /* Make sure this symbol is output as a dynamic symbol.
7788 Undefined weak syms won't yet be marked as dynamic. */
7789 if (h
->dynindx
== -1
7790 && !h
->forced_local
)
7792 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
7796 /* If that succeeded, we know we'll be keeping all the
7798 if (h
->dynindx
!= -1)
7802 eh
->dyn_relocs
= NULL
;
7807 /* Finally, allocate space. */
7808 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7810 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
7811 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7817 /* Find any dynamic relocs that apply to read-only sections. */
7820 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
7822 struct ppc_link_hash_entry
*eh
;
7823 struct ppc_dyn_relocs
*p
;
7825 if (h
->root
.type
== bfd_link_hash_warning
)
7826 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7828 eh
= (struct ppc_link_hash_entry
*) h
;
7829 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
7831 asection
*s
= p
->sec
->output_section
;
7833 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
7835 struct bfd_link_info
*info
= inf
;
7837 info
->flags
|= DF_TEXTREL
;
7839 /* Not an error, just cut short the traversal. */
7846 /* Set the sizes of the dynamic sections. */
7849 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
7850 struct bfd_link_info
*info
)
7852 struct ppc_link_hash_table
*htab
;
7858 htab
= ppc_hash_table (info
);
7859 dynobj
= htab
->elf
.dynobj
;
7863 if (htab
->elf
.dynamic_sections_created
)
7865 /* Set the contents of the .interp section to the interpreter. */
7866 if (info
->executable
)
7868 s
= bfd_get_section_by_name (dynobj
, ".interp");
7871 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
7872 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
7876 /* Set up .got offsets for local syms, and space for local dynamic
7878 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7880 struct got_entry
**lgot_ents
;
7881 struct got_entry
**end_lgot_ents
;
7883 bfd_size_type locsymcount
;
7884 Elf_Internal_Shdr
*symtab_hdr
;
7887 if (!is_ppc64_elf_target (ibfd
->xvec
))
7890 if (ppc64_tlsld_got (ibfd
)->refcount
> 0)
7892 s
= ppc64_elf_tdata (ibfd
)->got
;
7893 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7897 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7898 srel
->size
+= sizeof (Elf64_External_Rela
);
7902 ppc64_tlsld_got (ibfd
)->offset
= (bfd_vma
) -1;
7904 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
7906 struct ppc_dyn_relocs
*p
;
7908 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
7910 if (!bfd_is_abs_section (p
->sec
)
7911 && bfd_is_abs_section (p
->sec
->output_section
))
7913 /* Input section has been discarded, either because
7914 it is a copy of a linkonce section or due to
7915 linker script /DISCARD/, so we'll be discarding
7918 else if (p
->count
!= 0)
7920 srel
= elf_section_data (p
->sec
)->sreloc
;
7921 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
7922 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
7923 info
->flags
|= DF_TEXTREL
;
7928 lgot_ents
= elf_local_got_ents (ibfd
);
7932 symtab_hdr
= &elf_tdata (ibfd
)->symtab_hdr
;
7933 locsymcount
= symtab_hdr
->sh_info
;
7934 end_lgot_ents
= lgot_ents
+ locsymcount
;
7935 lgot_masks
= (char *) end_lgot_ents
;
7936 s
= ppc64_elf_tdata (ibfd
)->got
;
7937 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
7938 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
7940 struct got_entry
*ent
;
7942 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
7943 if (ent
->got
.refcount
> 0)
7945 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
7947 if (ppc64_tlsld_got (ibfd
)->offset
== (bfd_vma
) -1)
7949 ppc64_tlsld_got (ibfd
)->offset
= s
->size
;
7952 srel
->size
+= sizeof (Elf64_External_Rela
);
7954 ent
->got
.offset
= ppc64_tlsld_got (ibfd
)->offset
;
7958 ent
->got
.offset
= s
->size
;
7959 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
7963 srel
->size
+= 2 * sizeof (Elf64_External_Rela
);
7969 srel
->size
+= sizeof (Elf64_External_Rela
);
7974 ent
->got
.offset
= (bfd_vma
) -1;
7978 /* Allocate global sym .plt and .got entries, and space for global
7979 sym dynamic relocs. */
7980 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
7982 /* We now have determined the sizes of the various dynamic sections.
7983 Allocate memory for them. */
7985 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
7987 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
7990 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
7991 /* These haven't been allocated yet; don't strip. */
7993 else if (s
== htab
->got
7996 || s
== htab
->dynbss
)
7998 /* Strip this section if we don't need it; see the
8001 else if (CONST_STRNEQ (bfd_get_section_name (dynobj
, s
), ".rela"))
8005 if (s
!= htab
->relplt
)
8008 /* We use the reloc_count field as a counter if we need
8009 to copy relocs into the output file. */
8015 /* It's not one of our sections, so don't allocate space. */
8021 /* If we don't need this section, strip it from the
8022 output file. This is mostly to handle .rela.bss and
8023 .rela.plt. We must create both sections in
8024 create_dynamic_sections, because they must be created
8025 before the linker maps input sections to output
8026 sections. The linker does that before
8027 adjust_dynamic_symbol is called, and it is that
8028 function which decides whether anything needs to go
8029 into these sections. */
8030 s
->flags
|= SEC_EXCLUDE
;
8034 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
8037 /* Allocate memory for the section contents. We use bfd_zalloc
8038 here in case unused entries are not reclaimed before the
8039 section's contents are written out. This should not happen,
8040 but this way if it does we get a R_PPC64_NONE reloc in .rela
8041 sections instead of garbage.
8042 We also rely on the section contents being zero when writing
8044 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
8045 if (s
->contents
== NULL
)
8049 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8051 if (!is_ppc64_elf_target (ibfd
->xvec
))
8054 s
= ppc64_elf_tdata (ibfd
)->got
;
8055 if (s
!= NULL
&& s
!= htab
->got
)
8058 s
->flags
|= SEC_EXCLUDE
;
8061 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8062 if (s
->contents
== NULL
)
8066 s
= ppc64_elf_tdata (ibfd
)->relgot
;
8070 s
->flags
|= SEC_EXCLUDE
;
8073 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
8074 if (s
->contents
== NULL
)
8082 if (htab
->elf
.dynamic_sections_created
)
8084 /* Add some entries to the .dynamic section. We fill in the
8085 values later, in ppc64_elf_finish_dynamic_sections, but we
8086 must add the entries now so that we get the correct size for
8087 the .dynamic section. The DT_DEBUG entry is filled in by the
8088 dynamic linker and used by the debugger. */
8089 #define add_dynamic_entry(TAG, VAL) \
8090 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
8092 if (info
->executable
)
8094 if (!add_dynamic_entry (DT_DEBUG
, 0))
8098 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
8100 if (!add_dynamic_entry (DT_PLTGOT
, 0)
8101 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
8102 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
8103 || !add_dynamic_entry (DT_JMPREL
, 0)
8104 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
8110 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
8111 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
8117 if (!add_dynamic_entry (DT_RELA
, 0)
8118 || !add_dynamic_entry (DT_RELASZ
, 0)
8119 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
8122 /* If any dynamic relocs apply to a read-only section,
8123 then we need a DT_TEXTREL entry. */
8124 if ((info
->flags
& DF_TEXTREL
) == 0)
8125 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
8127 if ((info
->flags
& DF_TEXTREL
) != 0)
8129 if (!add_dynamic_entry (DT_TEXTREL
, 0))
8134 #undef add_dynamic_entry
8139 /* Determine the type of stub needed, if any, for a call. */
8141 static inline enum ppc_stub_type
8142 ppc_type_of_stub (asection
*input_sec
,
8143 const Elf_Internal_Rela
*rel
,
8144 struct ppc_link_hash_entry
**hash
,
8145 bfd_vma destination
)
8147 struct ppc_link_hash_entry
*h
= *hash
;
8149 bfd_vma branch_offset
;
8150 bfd_vma max_branch_offset
;
8151 enum elf_ppc64_reloc_type r_type
;
8155 struct ppc_link_hash_entry
*fdh
= h
;
8157 && fdh
->oh
->is_func_descriptor
)
8160 if (fdh
->elf
.dynindx
!= -1)
8162 struct plt_entry
*ent
;
8164 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8165 if (ent
->addend
== rel
->r_addend
8166 && ent
->plt
.offset
!= (bfd_vma
) -1)
8169 return ppc_stub_plt_call
;
8173 /* Here, we know we don't have a plt entry. If we don't have a
8174 either a defined function descriptor or a defined entry symbol
8175 in a regular object file, then it is pointless trying to make
8176 any other type of stub. */
8177 if (!((fdh
->elf
.root
.type
== bfd_link_hash_defined
8178 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
8179 && fdh
->elf
.root
.u
.def
.section
->output_section
!= NULL
)
8180 && !((h
->elf
.root
.type
== bfd_link_hash_defined
8181 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
8182 && h
->elf
.root
.u
.def
.section
->output_section
!= NULL
))
8183 return ppc_stub_none
;
8186 /* Determine where the call point is. */
8187 location
= (input_sec
->output_offset
8188 + input_sec
->output_section
->vma
8191 branch_offset
= destination
- location
;
8192 r_type
= ELF64_R_TYPE (rel
->r_info
);
8194 /* Determine if a long branch stub is needed. */
8195 max_branch_offset
= 1 << 25;
8196 if (r_type
!= R_PPC64_REL24
)
8197 max_branch_offset
= 1 << 15;
8199 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
8200 /* We need a stub. Figure out whether a long_branch or plt_branch
8202 return ppc_stub_long_branch
;
8204 return ppc_stub_none
;
8207 /* Build a .plt call stub. */
8209 static inline bfd_byte
*
8210 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
)
8212 #define PPC_LO(v) ((v) & 0xffff)
8213 #define PPC_HI(v) (((v) >> 16) & 0xffff)
8214 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
8216 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
8217 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
8218 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8219 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
8220 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
8222 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
), p
), p
+= 4;
8223 if (PPC_HA (offset
+ 8) != PPC_HA (offset
))
8224 bfd_put_32 (obfd
, ADDIS_R12_R12
| 1, p
), p
+= 4;
8226 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
8227 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
8228 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
8233 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8235 struct ppc_stub_hash_entry
*stub_entry
;
8236 struct ppc_branch_hash_entry
*br_entry
;
8237 struct bfd_link_info
*info
;
8238 struct ppc_link_hash_table
*htab
;
8242 struct plt_entry
*ent
;
8246 /* Massage our args to the form they really have. */
8247 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8250 htab
= ppc_hash_table (info
);
8252 /* Make a note of the offset within the stubs for this entry. */
8253 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
8254 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
8256 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
8257 switch (stub_entry
->stub_type
)
8259 case ppc_stub_long_branch
:
8260 case ppc_stub_long_branch_r2off
:
8261 /* Branches are relative. This is where we are going to. */
8262 off
= dest
= (stub_entry
->target_value
8263 + stub_entry
->target_section
->output_offset
8264 + stub_entry
->target_section
->output_section
->vma
);
8266 /* And this is where we are coming from. */
8267 off
-= (stub_entry
->stub_offset
8268 + stub_entry
->stub_sec
->output_offset
8269 + stub_entry
->stub_sec
->output_section
->vma
);
8271 if (stub_entry
->stub_type
!= ppc_stub_long_branch_r2off
)
8277 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8278 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8279 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8281 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8283 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8288 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
8290 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8292 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
8293 stub_entry
->root
.string
);
8294 htab
->stub_error
= TRUE
;
8298 if (info
->emitrelocations
)
8300 Elf_Internal_Rela
*relocs
, *r
;
8301 struct bfd_elf_section_data
*elfsec_data
;
8303 elfsec_data
= elf_section_data (stub_entry
->stub_sec
);
8304 relocs
= elfsec_data
->relocs
;
8307 bfd_size_type relsize
;
8308 relsize
= stub_entry
->stub_sec
->reloc_count
* sizeof (*relocs
);
8309 relocs
= bfd_alloc (htab
->stub_bfd
, relsize
);
8312 elfsec_data
->relocs
= relocs
;
8313 elfsec_data
->rel_hdr
.sh_size
= relsize
;
8314 elfsec_data
->rel_hdr
.sh_entsize
= 24;
8315 stub_entry
->stub_sec
->reloc_count
= 0;
8317 r
= relocs
+ stub_entry
->stub_sec
->reloc_count
;
8318 stub_entry
->stub_sec
->reloc_count
+= 1;
8319 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
8320 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
8322 if (stub_entry
->h
!= NULL
)
8324 struct elf_link_hash_entry
**hashes
;
8325 unsigned long symndx
;
8326 struct ppc_link_hash_entry
*h
;
8328 hashes
= elf_sym_hashes (htab
->stub_bfd
);
8331 bfd_size_type hsize
;
8333 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
8334 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
8337 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
8338 htab
->stub_globals
= 1;
8340 symndx
= htab
->stub_globals
++;
8342 hashes
[symndx
] = &h
->elf
;
8343 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
8344 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
8346 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
8347 /* H is an opd symbol. The addend must be zero. */
8351 off
= (h
->elf
.root
.u
.def
.value
8352 + h
->elf
.root
.u
.def
.section
->output_offset
8353 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
8360 case ppc_stub_plt_branch
:
8361 case ppc_stub_plt_branch_r2off
:
8362 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8363 stub_entry
->root
.string
+ 9,
8365 if (br_entry
== NULL
)
8367 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
8368 stub_entry
->root
.string
);
8369 htab
->stub_error
= TRUE
;
8373 off
= (stub_entry
->target_value
8374 + stub_entry
->target_section
->output_offset
8375 + stub_entry
->target_section
->output_section
->vma
);
8377 bfd_put_64 (htab
->brlt
->owner
, off
,
8378 htab
->brlt
->contents
+ br_entry
->offset
);
8380 if (htab
->relbrlt
!= NULL
)
8382 /* Create a reloc for the branch lookup table entry. */
8383 Elf_Internal_Rela rela
;
8386 rela
.r_offset
= (br_entry
->offset
8387 + htab
->brlt
->output_offset
8388 + htab
->brlt
->output_section
->vma
);
8389 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8390 rela
.r_addend
= off
;
8392 rl
= htab
->relbrlt
->contents
;
8393 rl
+= htab
->relbrlt
->reloc_count
++ * sizeof (Elf64_External_Rela
);
8394 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
8396 else if (info
->emitrelocations
)
8398 Elf_Internal_Rela
*relocs
, *r
;
8399 struct bfd_elf_section_data
*elfsec_data
;
8401 elfsec_data
= elf_section_data (htab
->brlt
);
8402 relocs
= elfsec_data
->relocs
;
8405 bfd_size_type relsize
;
8406 relsize
= htab
->brlt
->reloc_count
* sizeof (*relocs
);
8407 relocs
= bfd_alloc (htab
->brlt
->owner
, relsize
);
8410 elfsec_data
->relocs
= relocs
;
8411 elfsec_data
->rel_hdr
.sh_size
= relsize
;
8412 elfsec_data
->rel_hdr
.sh_entsize
= 24;
8413 htab
->brlt
->reloc_count
= 0;
8415 r
= relocs
+ htab
->brlt
->reloc_count
;
8416 htab
->brlt
->reloc_count
+= 1;
8417 r
->r_offset
= (br_entry
->offset
8418 + htab
->brlt
->output_offset
8419 + htab
->brlt
->output_section
->vma
);
8420 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
8424 off
= (br_entry
->offset
8425 + htab
->brlt
->output_offset
8426 + htab
->brlt
->output_section
->vma
8427 - elf_gp (htab
->brlt
->output_section
->owner
)
8428 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8430 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8432 (*_bfd_error_handler
)
8433 (_("linkage table error against `%s'"),
8434 stub_entry
->root
.string
);
8435 bfd_set_error (bfd_error_bad_value
);
8436 htab
->stub_error
= TRUE
;
8441 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
8443 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8445 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8452 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
8453 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8454 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
8456 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (indx
), loc
);
8458 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (indx
), loc
);
8460 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
8462 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
8466 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
8468 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
8471 case ppc_stub_plt_call
:
8472 /* Do the best we can for shared libraries built without
8473 exporting ".foo" for each "foo". This can happen when symbol
8474 versioning scripts strip all bar a subset of symbols. */
8475 if (stub_entry
->h
->oh
!= NULL
8476 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defined
8477 && stub_entry
->h
->oh
->elf
.root
.type
!= bfd_link_hash_defweak
)
8479 /* Point the symbol at the stub. There may be multiple stubs,
8480 we don't really care; The main thing is to make this sym
8481 defined somewhere. Maybe defining the symbol in the stub
8482 section is a silly idea. If we didn't do this, htab->top_id
8484 stub_entry
->h
->oh
->elf
.root
.type
= bfd_link_hash_defined
;
8485 stub_entry
->h
->oh
->elf
.root
.u
.def
.section
= stub_entry
->stub_sec
;
8486 stub_entry
->h
->oh
->elf
.root
.u
.def
.value
= stub_entry
->stub_offset
;
8489 /* Now build the stub. */
8491 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8492 if (ent
->addend
== stub_entry
->addend
)
8494 off
= ent
->plt
.offset
;
8497 if (off
>= (bfd_vma
) -2)
8500 off
&= ~ (bfd_vma
) 1;
8501 off
+= (htab
->plt
->output_offset
8502 + htab
->plt
->output_section
->vma
8503 - elf_gp (htab
->plt
->output_section
->owner
)
8504 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8506 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
8508 (*_bfd_error_handler
)
8509 (_("linkage table error against `%s'"),
8510 stub_entry
->h
->elf
.root
.root
.string
);
8511 bfd_set_error (bfd_error_bad_value
);
8512 htab
->stub_error
= TRUE
;
8516 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
);
8525 stub_entry
->stub_sec
->size
+= size
;
8527 if (htab
->emit_stub_syms
)
8529 struct elf_link_hash_entry
*h
;
8532 const char *const stub_str
[] = { "long_branch",
8533 "long_branch_r2off",
8538 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
8539 len2
= strlen (stub_entry
->root
.string
);
8540 name
= bfd_malloc (len1
+ len2
+ 2);
8543 memcpy (name
, stub_entry
->root
.string
, 9);
8544 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
8545 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
8546 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
8549 if (h
->root
.type
== bfd_link_hash_new
)
8551 h
->root
.type
= bfd_link_hash_defined
;
8552 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
8553 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
8556 h
->ref_regular_nonweak
= 1;
8557 h
->forced_local
= 1;
8565 /* As above, but don't actually build the stub. Just bump offset so
8566 we know stub section sizes, and select plt_branch stubs where
8567 long_branch stubs won't do. */
8570 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
8572 struct ppc_stub_hash_entry
*stub_entry
;
8573 struct bfd_link_info
*info
;
8574 struct ppc_link_hash_table
*htab
;
8578 /* Massage our args to the form they really have. */
8579 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
8582 htab
= ppc_hash_table (info
);
8584 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
8586 struct plt_entry
*ent
;
8588 for (ent
= stub_entry
->h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
8589 if (ent
->addend
== stub_entry
->addend
)
8591 off
= ent
->plt
.offset
& ~(bfd_vma
) 1;
8594 if (off
>= (bfd_vma
) -2)
8596 off
+= (htab
->plt
->output_offset
8597 + htab
->plt
->output_section
->vma
8598 - elf_gp (htab
->plt
->output_section
->owner
)
8599 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
8601 size
= PLT_CALL_STUB_SIZE
;
8602 if (PPC_HA (off
+ 16) != PPC_HA (off
))
8607 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
8609 off
= (stub_entry
->target_value
8610 + stub_entry
->target_section
->output_offset
8611 + stub_entry
->target_section
->output_section
->vma
);
8612 off
-= (stub_entry
->stub_sec
->size
8613 + stub_entry
->stub_sec
->output_offset
8614 + stub_entry
->stub_sec
->output_section
->vma
);
8616 /* Reset the stub type from the plt variant in case we now
8617 can reach with a shorter stub. */
8618 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
8619 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
8622 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
8628 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
8629 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
8631 struct ppc_branch_hash_entry
*br_entry
;
8633 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
8634 stub_entry
->root
.string
+ 9,
8636 if (br_entry
== NULL
)
8638 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
8639 stub_entry
->root
.string
);
8640 htab
->stub_error
= TRUE
;
8644 if (br_entry
->iter
!= htab
->stub_iteration
)
8646 br_entry
->iter
= htab
->stub_iteration
;
8647 br_entry
->offset
= htab
->brlt
->size
;
8648 htab
->brlt
->size
+= 8;
8650 if (htab
->relbrlt
!= NULL
)
8651 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
8652 else if (info
->emitrelocations
)
8654 htab
->brlt
->reloc_count
+= 1;
8655 htab
->brlt
->flags
|= SEC_RELOC
;
8659 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
8661 if (stub_entry
->stub_type
!= ppc_stub_plt_branch
)
8664 else if (info
->emitrelocations
)
8666 stub_entry
->stub_sec
->reloc_count
+= 1;
8667 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
8671 stub_entry
->stub_sec
->size
+= size
;
8675 /* Set up various things so that we can make a list of input sections
8676 for each output section included in the link. Returns -1 on error,
8677 0 when no stubs will be needed, and 1 on success. */
8680 ppc64_elf_setup_section_lists (bfd
*output_bfd
,
8681 struct bfd_link_info
*info
,
8685 int top_id
, top_index
, id
;
8687 asection
**input_list
;
8689 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8691 htab
->no_multi_toc
= no_multi_toc
;
8693 if (htab
->brlt
== NULL
)
8696 /* Find the top input section id. */
8697 for (input_bfd
= info
->input_bfds
, top_id
= 3;
8699 input_bfd
= input_bfd
->link_next
)
8701 for (section
= input_bfd
->sections
;
8703 section
= section
->next
)
8705 if (top_id
< section
->id
)
8706 top_id
= section
->id
;
8710 htab
->top_id
= top_id
;
8711 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
8712 htab
->stub_group
= bfd_zmalloc (amt
);
8713 if (htab
->stub_group
== NULL
)
8716 /* Set toc_off for com, und, abs and ind sections. */
8717 for (id
= 0; id
< 3; id
++)
8718 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
8720 elf_gp (output_bfd
) = htab
->toc_curr
= ppc64_elf_toc (output_bfd
);
8722 /* We can't use output_bfd->section_count here to find the top output
8723 section index as some sections may have been removed, and
8724 strip_excluded_output_sections doesn't renumber the indices. */
8725 for (section
= output_bfd
->sections
, top_index
= 0;
8727 section
= section
->next
)
8729 if (top_index
< section
->index
)
8730 top_index
= section
->index
;
8733 htab
->top_index
= top_index
;
8734 amt
= sizeof (asection
*) * (top_index
+ 1);
8735 input_list
= bfd_zmalloc (amt
);
8736 htab
->input_list
= input_list
;
8737 if (input_list
== NULL
)
8743 /* The linker repeatedly calls this function for each TOC input section
8744 and linker generated GOT section. Group input bfds such that the toc
8745 within a group is less than 64k in size. Will break with cute linker
8746 scripts that play games with dot in the output toc section. */
8749 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
8751 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8753 if (!htab
->no_multi_toc
)
8755 bfd_vma addr
= isec
->output_offset
+ isec
->output_section
->vma
;
8756 bfd_vma off
= addr
- htab
->toc_curr
;
8758 if (off
+ isec
->size
> 0x10000)
8759 htab
->toc_curr
= addr
;
8761 elf_gp (isec
->owner
) = (htab
->toc_curr
8762 - elf_gp (isec
->output_section
->owner
)
8767 /* Called after the last call to the above function. */
8770 ppc64_elf_reinit_toc (bfd
*output_bfd
, struct bfd_link_info
*info
)
8772 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8774 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (output_bfd
);
8776 /* toc_curr tracks the TOC offset used for code sections below in
8777 ppc64_elf_next_input_section. Start off at 0x8000. */
8778 htab
->toc_curr
= TOC_BASE_OFF
;
8781 /* No toc references were found in ISEC. If the code in ISEC makes no
8782 calls, then there's no need to use toc adjusting stubs when branching
8783 into ISEC. Actually, indirect calls from ISEC are OK as they will
8784 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
8785 needed, and 2 if a cyclical call-graph was found but no other reason
8786 for a stub was detected. If called from the top level, a return of
8787 2 means the same as a return of 0. */
8790 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
8792 Elf_Internal_Rela
*relstart
, *rel
;
8793 Elf_Internal_Sym
*local_syms
;
8795 struct ppc_link_hash_table
*htab
;
8797 /* We know none of our code bearing sections will need toc stubs. */
8798 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
8801 if (isec
->size
== 0)
8804 if (isec
->output_section
== NULL
)
8807 /* Hack for linux kernel. .fixup contains branches, but only back to
8808 the function that hit an exception. */
8809 if (strcmp (isec
->name
, ".fixup") == 0)
8812 if (isec
->reloc_count
== 0)
8815 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
8817 if (relstart
== NULL
)
8820 /* Look for branches to outside of this section. */
8823 htab
= ppc_hash_table (info
);
8824 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
8826 enum elf_ppc64_reloc_type r_type
;
8827 unsigned long r_symndx
;
8828 struct elf_link_hash_entry
*h
;
8829 Elf_Internal_Sym
*sym
;
8835 r_type
= ELF64_R_TYPE (rel
->r_info
);
8836 if (r_type
!= R_PPC64_REL24
8837 && r_type
!= R_PPC64_REL14
8838 && r_type
!= R_PPC64_REL14_BRTAKEN
8839 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
8842 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8843 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
8850 /* Calls to dynamic lib functions go through a plt call stub
8851 that uses r2. Branches to undefined symbols might be a call
8852 using old-style dot symbols that can be satisfied by a plt
8853 call into a new-style dynamic library. */
8854 if (sym_sec
== NULL
)
8856 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8859 && eh
->oh
->elf
.plt
.plist
!= NULL
)
8865 /* Ignore other undefined symbols. */
8869 /* Assume branches to other sections not included in the link need
8870 stubs too, to cover -R and absolute syms. */
8871 if (sym_sec
->output_section
== NULL
)
8878 sym_value
= sym
->st_value
;
8881 if (h
->root
.type
!= bfd_link_hash_defined
8882 && h
->root
.type
!= bfd_link_hash_defweak
)
8884 sym_value
= h
->root
.u
.def
.value
;
8886 sym_value
+= rel
->r_addend
;
8888 /* If this branch reloc uses an opd sym, find the code section. */
8889 opd_adjust
= get_opd_info (sym_sec
);
8890 if (opd_adjust
!= NULL
)
8896 adjust
= opd_adjust
[sym
->st_value
/ 8];
8898 /* Assume deleted functions won't ever be called. */
8900 sym_value
+= adjust
;
8903 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
8904 if (dest
== (bfd_vma
) -1)
8909 + sym_sec
->output_offset
8910 + sym_sec
->output_section
->vma
);
8912 /* Ignore branch to self. */
8913 if (sym_sec
== isec
)
8916 /* If the called function uses the toc, we need a stub. */
8917 if (sym_sec
->has_toc_reloc
8918 || sym_sec
->makes_toc_func_call
)
8924 /* Assume any branch that needs a long branch stub might in fact
8925 need a plt_branch stub. A plt_branch stub uses r2. */
8926 else if (dest
- (isec
->output_offset
8927 + isec
->output_section
->vma
8928 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
8934 /* If calling back to a section in the process of being tested, we
8935 can't say for sure that no toc adjusting stubs are needed, so
8936 don't return zero. */
8937 else if (sym_sec
->call_check_in_progress
)
8940 /* Branches to another section that itself doesn't have any TOC
8941 references are OK. Recursively call ourselves to check. */
8942 else if (sym_sec
->id
<= htab
->top_id
8943 && htab
->stub_group
[sym_sec
->id
].toc_off
== 0)
8947 /* Mark current section as indeterminate, so that other
8948 sections that call back to current won't be marked as
8950 isec
->call_check_in_progress
= 1;
8951 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
8952 isec
->call_check_in_progress
= 0;
8956 /* An error. Exit. */
8960 else if (recur
<= 1)
8962 /* Known result. Mark as checked and set section flag. */
8963 htab
->stub_group
[sym_sec
->id
].toc_off
= 1;
8966 sym_sec
->makes_toc_func_call
= 1;
8973 /* Unknown result. Continue checking. */
8979 if (local_syms
!= NULL
8980 && (elf_tdata (isec
->owner
)->symtab_hdr
.contents
8981 != (unsigned char *) local_syms
))
8983 if (elf_section_data (isec
)->relocs
!= relstart
)
8989 /* The linker repeatedly calls this function for each input section,
8990 in the order that input sections are linked into output sections.
8991 Build lists of input sections to determine groupings between which
8992 we may insert linker stubs. */
8995 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
8997 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8999 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
9000 && isec
->output_section
->index
<= htab
->top_index
)
9002 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
9003 /* Steal the link_sec pointer for our list. */
9004 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
9005 /* This happens to make the list in reverse order,
9006 which is what we want. */
9007 PREV_SEC (isec
) = *list
;
9011 if (htab
->multi_toc_needed
)
9013 /* If a code section has a function that uses the TOC then we need
9014 to use the right TOC (obviously). Also, make sure that .opd gets
9015 the correct TOC value for R_PPC64_TOC relocs that don't have or
9016 can't find their function symbol (shouldn't ever happen now). */
9017 if (isec
->has_toc_reloc
|| (isec
->flags
& SEC_CODE
) == 0)
9019 if (elf_gp (isec
->owner
) != 0)
9020 htab
->toc_curr
= elf_gp (isec
->owner
);
9022 else if (htab
->stub_group
[isec
->id
].toc_off
== 0)
9024 int ret
= toc_adjusting_stub_needed (info
, isec
);
9028 isec
->makes_toc_func_call
= ret
& 1;
9032 /* Functions that don't use the TOC can belong in any TOC group.
9033 Use the last TOC base. This happens to make _init and _fini
9035 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
9039 /* See whether we can group stub sections together. Grouping stub
9040 sections may result in fewer stubs. More importantly, we need to
9041 put all .init* and .fini* stubs at the beginning of the .init or
9042 .fini output sections respectively, because glibc splits the
9043 _init and _fini functions into multiple parts. Putting a stub in
9044 the middle of a function is not a good idea. */
9047 group_sections (struct ppc_link_hash_table
*htab
,
9048 bfd_size_type stub_group_size
,
9049 bfd_boolean stubs_always_before_branch
)
9052 bfd_size_type stub14_group_size
;
9053 bfd_boolean suppress_size_errors
;
9055 suppress_size_errors
= FALSE
;
9056 stub14_group_size
= stub_group_size
;
9057 if (stub_group_size
== 1)
9059 /* Default values. */
9060 if (stubs_always_before_branch
)
9062 stub_group_size
= 0x1e00000;
9063 stub14_group_size
= 0x7800;
9067 stub_group_size
= 0x1c00000;
9068 stub14_group_size
= 0x7000;
9070 suppress_size_errors
= TRUE
;
9073 list
= htab
->input_list
+ htab
->top_index
;
9076 asection
*tail
= *list
;
9077 while (tail
!= NULL
)
9081 bfd_size_type total
;
9082 bfd_boolean big_sec
;
9087 big_sec
= total
> (ppc64_elf_section_data (tail
)->has_14bit_branch
9088 ? stub14_group_size
: stub_group_size
);
9089 if (big_sec
&& !suppress_size_errors
)
9090 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
9092 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
9094 while ((prev
= PREV_SEC (curr
)) != NULL
9095 && ((total
+= curr
->output_offset
- prev
->output_offset
)
9096 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9097 ? stub14_group_size
: stub_group_size
))
9098 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9101 /* OK, the size from the start of CURR to the end is less
9102 than stub_group_size and thus can be handled by one stub
9103 section. (or the tail section is itself larger than
9104 stub_group_size, in which case we may be toast.) We
9105 should really be keeping track of the total size of stubs
9106 added here, as stubs contribute to the final output
9107 section size. That's a little tricky, and this way will
9108 only break if stubs added make the total size more than
9109 2^25, ie. for the default stub_group_size, if stubs total
9110 more than 2097152 bytes, or nearly 75000 plt call stubs. */
9113 prev
= PREV_SEC (tail
);
9114 /* Set up this stub group. */
9115 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9117 while (tail
!= curr
&& (tail
= prev
) != NULL
);
9119 /* But wait, there's more! Input sections up to stub_group_size
9120 bytes before the stub section can be handled by it too.
9121 Don't do this if we have a really large section after the
9122 stubs, as adding more stubs increases the chance that
9123 branches may not reach into the stub section. */
9124 if (!stubs_always_before_branch
&& !big_sec
)
9128 && ((total
+= tail
->output_offset
- prev
->output_offset
)
9129 < (ppc64_elf_section_data (prev
)->has_14bit_branch
9130 ? stub14_group_size
: stub_group_size
))
9131 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
9134 prev
= PREV_SEC (tail
);
9135 htab
->stub_group
[tail
->id
].link_sec
= curr
;
9141 while (list
-- != htab
->input_list
);
9142 free (htab
->input_list
);
9146 /* Determine and set the size of the stub section for a final link.
9148 The basic idea here is to examine all the relocations looking for
9149 PC-relative calls to a target that is unreachable with a "bl"
9153 ppc64_elf_size_stubs (bfd
*output_bfd
,
9154 struct bfd_link_info
*info
,
9155 bfd_signed_vma group_size
,
9156 asection
*(*add_stub_section
) (const char *, asection
*),
9157 void (*layout_sections_again
) (void))
9159 bfd_size_type stub_group_size
;
9160 bfd_boolean stubs_always_before_branch
;
9161 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9163 /* Stash our params away. */
9164 htab
->add_stub_section
= add_stub_section
;
9165 htab
->layout_sections_again
= layout_sections_again
;
9166 stubs_always_before_branch
= group_size
< 0;
9168 stub_group_size
= -group_size
;
9170 stub_group_size
= group_size
;
9172 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
9177 unsigned int bfd_indx
;
9180 htab
->stub_iteration
+= 1;
9182 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
9184 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
9186 Elf_Internal_Shdr
*symtab_hdr
;
9188 Elf_Internal_Sym
*local_syms
= NULL
;
9190 if (!is_ppc64_elf_target (input_bfd
->xvec
))
9193 /* We'll need the symbol table in a second. */
9194 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9195 if (symtab_hdr
->sh_info
== 0)
9198 /* Walk over each section attached to the input bfd. */
9199 for (section
= input_bfd
->sections
;
9201 section
= section
->next
)
9203 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
9205 /* If there aren't any relocs, then there's nothing more
9207 if ((section
->flags
& SEC_RELOC
) == 0
9208 || (section
->flags
& SEC_ALLOC
) == 0
9209 || (section
->flags
& SEC_LOAD
) == 0
9210 || (section
->flags
& SEC_CODE
) == 0
9211 || section
->reloc_count
== 0)
9214 /* If this section is a link-once section that will be
9215 discarded, then don't create any stubs. */
9216 if (section
->output_section
== NULL
9217 || section
->output_section
->owner
!= output_bfd
)
9220 /* Get the relocs. */
9222 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
9224 if (internal_relocs
== NULL
)
9225 goto error_ret_free_local
;
9227 /* Now examine each relocation. */
9228 irela
= internal_relocs
;
9229 irelaend
= irela
+ section
->reloc_count
;
9230 for (; irela
< irelaend
; irela
++)
9232 enum elf_ppc64_reloc_type r_type
;
9233 unsigned int r_indx
;
9234 enum ppc_stub_type stub_type
;
9235 struct ppc_stub_hash_entry
*stub_entry
;
9236 asection
*sym_sec
, *code_sec
;
9238 bfd_vma destination
;
9239 bfd_boolean ok_dest
;
9240 struct ppc_link_hash_entry
*hash
;
9241 struct ppc_link_hash_entry
*fdh
;
9242 struct elf_link_hash_entry
*h
;
9243 Elf_Internal_Sym
*sym
;
9245 const asection
*id_sec
;
9248 r_type
= ELF64_R_TYPE (irela
->r_info
);
9249 r_indx
= ELF64_R_SYM (irela
->r_info
);
9251 if (r_type
>= R_PPC64_max
)
9253 bfd_set_error (bfd_error_bad_value
);
9254 goto error_ret_free_internal
;
9257 /* Only look for stubs on branch instructions. */
9258 if (r_type
!= R_PPC64_REL24
9259 && r_type
!= R_PPC64_REL14
9260 && r_type
!= R_PPC64_REL14_BRTAKEN
9261 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
9264 /* Now determine the call target, its name, value,
9266 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
9268 goto error_ret_free_internal
;
9269 hash
= (struct ppc_link_hash_entry
*) h
;
9276 sym_value
= sym
->st_value
;
9279 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
9280 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
9282 sym_value
= hash
->elf
.root
.u
.def
.value
;
9283 if (sym_sec
->output_section
!= NULL
)
9286 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
9287 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
9289 /* Recognise an old ABI func code entry sym, and
9290 use the func descriptor sym instead if it is
9292 if (hash
->elf
.root
.root
.string
[0] == '.'
9293 && (fdh
= get_fdh (hash
, htab
)) != NULL
)
9295 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
9296 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
9298 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
9299 sym_value
= fdh
->elf
.root
.u
.def
.value
;
9300 if (sym_sec
->output_section
!= NULL
)
9309 bfd_set_error (bfd_error_bad_value
);
9310 goto error_ret_free_internal
;
9316 sym_value
+= irela
->r_addend
;
9317 destination
= (sym_value
9318 + sym_sec
->output_offset
9319 + sym_sec
->output_section
->vma
);
9323 opd_adjust
= get_opd_info (sym_sec
);
9324 if (opd_adjust
!= NULL
)
9330 long adjust
= opd_adjust
[sym_value
/ 8];
9333 sym_value
+= adjust
;
9335 dest
= opd_entry_value (sym_sec
, sym_value
,
9336 &code_sec
, &sym_value
);
9337 if (dest
!= (bfd_vma
) -1)
9342 /* Fixup old ABI sym to point at code
9344 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
9345 hash
->elf
.root
.u
.def
.section
= code_sec
;
9346 hash
->elf
.root
.u
.def
.value
= sym_value
;
9351 /* Determine what (if any) linker stub is needed. */
9352 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
9355 if (stub_type
!= ppc_stub_plt_call
)
9357 /* Check whether we need a TOC adjusting stub.
9358 Since the linker pastes together pieces from
9359 different object files when creating the
9360 _init and _fini functions, it may be that a
9361 call to what looks like a local sym is in
9362 fact a call needing a TOC adjustment. */
9363 if (code_sec
!= NULL
9364 && code_sec
->output_section
!= NULL
9365 && (htab
->stub_group
[code_sec
->id
].toc_off
9366 != htab
->stub_group
[section
->id
].toc_off
)
9367 && (code_sec
->has_toc_reloc
9368 || code_sec
->makes_toc_func_call
))
9369 stub_type
= ppc_stub_long_branch_r2off
;
9372 if (stub_type
== ppc_stub_none
)
9375 /* __tls_get_addr calls might be eliminated. */
9376 if (stub_type
!= ppc_stub_plt_call
9378 && (hash
== htab
->tls_get_addr
9379 || hash
== htab
->tls_get_addr_fd
)
9380 && section
->has_tls_reloc
9381 && irela
!= internal_relocs
)
9386 if (!get_tls_mask (&tls_mask
, NULL
, &local_syms
,
9387 irela
- 1, input_bfd
))
9388 goto error_ret_free_internal
;
9393 /* Support for grouping stub sections. */
9394 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
9396 /* Get the name of this stub. */
9397 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
9399 goto error_ret_free_internal
;
9401 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
9402 stub_name
, FALSE
, FALSE
);
9403 if (stub_entry
!= NULL
)
9405 /* The proper stub has already been created. */
9410 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
9411 if (stub_entry
== NULL
)
9414 error_ret_free_internal
:
9415 if (elf_section_data (section
)->relocs
== NULL
)
9416 free (internal_relocs
);
9417 error_ret_free_local
:
9418 if (local_syms
!= NULL
9419 && (symtab_hdr
->contents
9420 != (unsigned char *) local_syms
))
9425 stub_entry
->stub_type
= stub_type
;
9426 stub_entry
->target_value
= sym_value
;
9427 stub_entry
->target_section
= code_sec
;
9428 stub_entry
->h
= hash
;
9429 stub_entry
->addend
= irela
->r_addend
;
9431 if (stub_entry
->h
!= NULL
)
9432 htab
->stub_globals
+= 1;
9435 /* We're done with the internal relocs, free them. */
9436 if (elf_section_data (section
)->relocs
!= internal_relocs
)
9437 free (internal_relocs
);
9440 if (local_syms
!= NULL
9441 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
9443 if (!info
->keep_memory
)
9446 symtab_hdr
->contents
= (unsigned char *) local_syms
;
9450 /* We may have added some stubs. Find out the new size of the
9452 for (stub_sec
= htab
->stub_bfd
->sections
;
9454 stub_sec
= stub_sec
->next
)
9455 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9457 stub_sec
->rawsize
= stub_sec
->size
;
9459 stub_sec
->reloc_count
= 0;
9460 stub_sec
->flags
&= ~SEC_RELOC
;
9463 htab
->brlt
->size
= 0;
9464 htab
->brlt
->reloc_count
= 0;
9465 htab
->brlt
->flags
&= ~SEC_RELOC
;
9466 if (htab
->relbrlt
!= NULL
)
9467 htab
->relbrlt
->size
= 0;
9469 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
9471 for (stub_sec
= htab
->stub_bfd
->sections
;
9473 stub_sec
= stub_sec
->next
)
9474 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9475 && stub_sec
->rawsize
!= stub_sec
->size
)
9478 /* Exit from this loop when no stubs have been added, and no stubs
9479 have changed size. */
9480 if (stub_sec
== NULL
)
9483 /* Ask the linker to do its stuff. */
9484 (*htab
->layout_sections_again
) ();
9487 /* It would be nice to strip htab->brlt from the output if the
9488 section is empty, but it's too late. If we strip sections here,
9489 the dynamic symbol table is corrupted since the section symbol
9490 for the stripped section isn't written. */
9495 /* Called after we have determined section placement. If sections
9496 move, we'll be called again. Provide a value for TOCstart. */
9499 ppc64_elf_toc (bfd
*obfd
)
9504 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
9505 order. The TOC starts where the first of these sections starts. */
9506 s
= bfd_get_section_by_name (obfd
, ".got");
9508 s
= bfd_get_section_by_name (obfd
, ".toc");
9510 s
= bfd_get_section_by_name (obfd
, ".tocbss");
9512 s
= bfd_get_section_by_name (obfd
, ".plt");
9515 /* This may happen for
9516 o references to TOC base (SYM@toc / TOC[tc0]) without a
9519 o --gc-sections and empty TOC sections
9521 FIXME: Warn user? */
9523 /* Look for a likely section. We probably won't even be
9525 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9526 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
))
9527 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9530 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9531 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
))
9532 == (SEC_ALLOC
| SEC_SMALL_DATA
))
9535 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9536 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
)) == SEC_ALLOC
)
9539 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
9540 if ((s
->flags
& SEC_ALLOC
) == SEC_ALLOC
)
9546 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
9551 /* Build all the stubs associated with the current output file.
9552 The stubs are kept in a hash table attached to the main linker
9553 hash table. This function is called via gldelf64ppc_finish. */
9556 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
9557 struct bfd_link_info
*info
,
9560 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9563 int stub_sec_count
= 0;
9565 htab
->emit_stub_syms
= emit_stub_syms
;
9567 /* Allocate memory to hold the linker stubs. */
9568 for (stub_sec
= htab
->stub_bfd
->sections
;
9570 stub_sec
= stub_sec
->next
)
9571 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
9572 && stub_sec
->size
!= 0)
9574 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
9575 if (stub_sec
->contents
== NULL
)
9577 /* We want to check that built size is the same as calculated
9578 size. rawsize is a convenient location to use. */
9579 stub_sec
->rawsize
= stub_sec
->size
;
9583 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
9588 /* Build the .glink plt call stub. */
9589 if (htab
->emit_stub_syms
)
9591 struct elf_link_hash_entry
*h
;
9592 h
= elf_link_hash_lookup (&htab
->elf
, "__glink", TRUE
, FALSE
, FALSE
);
9595 if (h
->root
.type
== bfd_link_hash_new
)
9597 h
->root
.type
= bfd_link_hash_defined
;
9598 h
->root
.u
.def
.section
= htab
->glink
;
9599 h
->root
.u
.def
.value
= 8;
9602 h
->ref_regular_nonweak
= 1;
9603 h
->forced_local
= 1;
9607 p
= htab
->glink
->contents
;
9608 plt0
= (htab
->plt
->output_section
->vma
9609 + htab
->plt
->output_offset
9610 - (htab
->glink
->output_section
->vma
9611 + htab
->glink
->output_offset
9613 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
9615 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
9617 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
9619 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
9621 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
9623 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
9625 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
9627 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
9629 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
9631 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
9633 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
9635 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
9637 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
9639 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
9643 /* Build the .glink lazy link call stubs. */
9645 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
9649 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
9654 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
9656 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
9659 bfd_put_32 (htab
->glink
->owner
,
9660 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
9664 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
9667 if (htab
->brlt
->size
!= 0)
9669 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
9671 if (htab
->brlt
->contents
== NULL
)
9674 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
9676 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
9677 htab
->relbrlt
->size
);
9678 if (htab
->relbrlt
->contents
== NULL
)
9682 /* Build the stubs as directed by the stub hash table. */
9683 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
9685 if (htab
->relbrlt
!= NULL
)
9686 htab
->relbrlt
->reloc_count
= 0;
9688 for (stub_sec
= htab
->stub_bfd
->sections
;
9690 stub_sec
= stub_sec
->next
)
9691 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
9693 stub_sec_count
+= 1;
9694 if (stub_sec
->rawsize
!= stub_sec
->size
)
9698 if (stub_sec
!= NULL
9699 || htab
->glink
->rawsize
!= htab
->glink
->size
)
9701 htab
->stub_error
= TRUE
;
9702 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
9705 if (htab
->stub_error
)
9710 *stats
= bfd_malloc (500);
9714 sprintf (*stats
, _("linker stubs in %u group%s\n"
9717 " long branch %lu\n"
9718 " long toc adj %lu\n"
9721 stub_sec_count
== 1 ? "" : "s",
9722 htab
->stub_count
[ppc_stub_long_branch
- 1],
9723 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
9724 htab
->stub_count
[ppc_stub_plt_branch
- 1],
9725 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
9726 htab
->stub_count
[ppc_stub_plt_call
- 1]);
9731 /* This function undoes the changes made by add_symbol_adjust. */
9734 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
9736 struct ppc_link_hash_entry
*eh
;
9738 if (h
->root
.type
== bfd_link_hash_indirect
)
9741 if (h
->root
.type
== bfd_link_hash_warning
)
9742 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
9744 eh
= (struct ppc_link_hash_entry
*) h
;
9745 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
9748 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
9753 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
9755 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9756 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
9759 /* What to do when ld finds relocations against symbols defined in
9760 discarded sections. */
9763 ppc64_elf_action_discarded (asection
*sec
)
9765 if (strcmp (".opd", sec
->name
) == 0)
9768 if (strcmp (".toc", sec
->name
) == 0)
9771 if (strcmp (".toc1", sec
->name
) == 0)
9774 return _bfd_elf_default_action_discarded (sec
);
9777 /* The RELOCATE_SECTION function is called by the ELF backend linker
9778 to handle the relocations for a section.
9780 The relocs are always passed as Rela structures; if the section
9781 actually uses Rel structures, the r_addend field will always be
9784 This function is responsible for adjust the section contents as
9785 necessary, and (if using Rela relocs and generating a
9786 relocatable output file) adjusting the reloc addend as
9789 This function does not have to worry about setting the reloc
9790 address or the reloc symbol index.
9792 LOCAL_SYMS is a pointer to the swapped in local symbols.
9794 LOCAL_SECTIONS is an array giving the section in the input file
9795 corresponding to the st_shndx field of each local symbol.
9797 The global hash table entry for the global symbols can be found
9798 via elf_sym_hashes (input_bfd).
9800 When generating relocatable output, this function must handle
9801 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
9802 going to be the section symbol corresponding to the output
9803 section, which means that the addend must be adjusted
9807 ppc64_elf_relocate_section (bfd
*output_bfd
,
9808 struct bfd_link_info
*info
,
9810 asection
*input_section
,
9812 Elf_Internal_Rela
*relocs
,
9813 Elf_Internal_Sym
*local_syms
,
9814 asection
**local_sections
)
9816 struct ppc_link_hash_table
*htab
;
9817 Elf_Internal_Shdr
*symtab_hdr
;
9818 struct elf_link_hash_entry
**sym_hashes
;
9819 Elf_Internal_Rela
*rel
;
9820 Elf_Internal_Rela
*relend
;
9821 Elf_Internal_Rela outrel
;
9823 struct got_entry
**local_got_ents
;
9825 bfd_boolean ret
= TRUE
;
9827 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
9828 bfd_boolean is_power4
= FALSE
;
9829 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
9831 /* Initialize howto table if needed. */
9832 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
9835 htab
= ppc_hash_table (info
);
9837 /* Don't relocate stub sections. */
9838 if (input_section
->owner
== htab
->stub_bfd
)
9841 local_got_ents
= elf_local_got_ents (input_bfd
);
9842 TOCstart
= elf_gp (output_bfd
);
9843 symtab_hdr
= &elf_tdata (input_bfd
)->symtab_hdr
;
9844 sym_hashes
= elf_sym_hashes (input_bfd
);
9845 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
9848 relend
= relocs
+ input_section
->reloc_count
;
9849 for (; rel
< relend
; rel
++)
9851 enum elf_ppc64_reloc_type r_type
;
9852 bfd_vma addend
, orig_addend
;
9853 bfd_reloc_status_type r
;
9854 Elf_Internal_Sym
*sym
;
9856 struct elf_link_hash_entry
*h_elf
;
9857 struct ppc_link_hash_entry
*h
;
9858 struct ppc_link_hash_entry
*fdh
;
9859 const char *sym_name
;
9860 unsigned long r_symndx
, toc_symndx
;
9861 char tls_mask
, tls_gd
, tls_type
;
9864 bfd_boolean unresolved_reloc
;
9866 unsigned long insn
, mask
;
9867 struct ppc_stub_hash_entry
*stub_entry
;
9868 bfd_vma max_br_offset
;
9871 r_type
= ELF64_R_TYPE (rel
->r_info
);
9872 r_symndx
= ELF64_R_SYM (rel
->r_info
);
9874 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
9875 symbol of the previous ADDR64 reloc. The symbol gives us the
9876 proper TOC base to use. */
9877 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
9879 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
9881 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
9887 unresolved_reloc
= FALSE
;
9889 orig_addend
= rel
->r_addend
;
9891 if (r_symndx
< symtab_hdr
->sh_info
)
9893 /* It's a local symbol. */
9896 sym
= local_syms
+ r_symndx
;
9897 sec
= local_sections
[r_symndx
];
9898 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
9899 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
9900 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
9901 opd_adjust
= get_opd_info (sec
);
9902 if (opd_adjust
!= NULL
)
9904 long adjust
= opd_adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
9909 /* If this is a relocation against the opd section sym
9910 and we have edited .opd, adjust the reloc addend so
9911 that ld -r and ld --emit-relocs output is correct.
9912 If it is a reloc against some other .opd symbol,
9913 then the symbol value will be adjusted later. */
9914 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
9915 rel
->r_addend
+= adjust
;
9917 relocation
+= adjust
;
9923 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
9924 r_symndx
, symtab_hdr
, sym_hashes
,
9925 h_elf
, sec
, relocation
,
9926 unresolved_reloc
, warned
);
9927 sym_name
= h_elf
->root
.root
.string
;
9928 sym_type
= h_elf
->type
;
9930 h
= (struct ppc_link_hash_entry
*) h_elf
;
9932 if (sec
!= NULL
&& elf_discarded_section (sec
))
9934 /* For relocs against symbols from removed linkonce sections,
9935 or sections discarded by a linker script, we just want the
9936 section contents zeroed. Avoid any special processing. */
9937 _bfd_clear_contents (ppc64_elf_howto_table
[r_type
], input_bfd
,
9938 contents
+ rel
->r_offset
);
9944 if (info
->relocatable
)
9947 /* TLS optimizations. Replace instruction sequences and relocs
9948 based on information we collected in tls_optimize. We edit
9949 RELOCS so that --emit-relocs will output something sensible
9950 for the final instruction stream. */
9954 if (IS_PPC64_TLS_RELOC (r_type
))
9957 tls_mask
= h
->tls_mask
;
9958 else if (local_got_ents
!= NULL
)
9961 lgot_masks
= (char *) (local_got_ents
+ symtab_hdr
->sh_info
);
9962 tls_mask
= lgot_masks
[r_symndx
];
9964 if (tls_mask
== 0 && r_type
== R_PPC64_TLS
)
9966 /* Check for toc tls entries. */
9969 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
9974 tls_mask
= *toc_tls
;
9978 /* Check that tls relocs are used with tls syms, and non-tls
9979 relocs are used with non-tls syms. */
9981 && r_type
!= R_PPC64_NONE
9983 || h
->elf
.root
.type
== bfd_link_hash_defined
9984 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
9985 && IS_PPC64_TLS_RELOC (r_type
) != (sym_type
== STT_TLS
))
9987 if (r_type
== R_PPC64_TLS
&& tls_mask
!= 0)
9988 /* R_PPC64_TLS is OK against a symbol in the TOC. */
9991 (*_bfd_error_handler
)
9992 (sym_type
== STT_TLS
9993 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
9994 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
9997 (long) rel
->r_offset
,
9998 ppc64_elf_howto_table
[r_type
]->name
,
10002 /* Ensure reloc mapping code below stays sane. */
10003 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
10004 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
10005 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
10006 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
10007 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
10008 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
10009 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
10010 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
10011 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
10012 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
10020 case R_PPC64_TOC16
:
10021 case R_PPC64_TOC16_LO
:
10022 case R_PPC64_TOC16_DS
:
10023 case R_PPC64_TOC16_LO_DS
:
10025 /* Check for toc tls entries. */
10029 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &local_syms
,
10036 tls_mask
= *toc_tls
;
10037 if (r_type
== R_PPC64_TOC16_DS
10038 || r_type
== R_PPC64_TOC16_LO_DS
)
10041 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
10046 /* If we found a GD reloc pair, then we might be
10047 doing a GD->IE transition. */
10050 tls_gd
= TLS_TPRELGD
;
10051 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10052 goto tls_get_addr_check
;
10054 else if (retval
== 3)
10056 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10057 goto tls_get_addr_check
;
10064 case R_PPC64_GOT_TPREL16_DS
:
10065 case R_PPC64_GOT_TPREL16_LO_DS
:
10067 && (tls_mask
& TLS_TPREL
) == 0)
10070 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
10072 insn
|= 0x3c0d0000; /* addis 0,13,0 */
10073 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
10074 r_type
= R_PPC64_TPREL16_HA
;
10075 if (toc_symndx
!= 0)
10077 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10078 /* We changed the symbol. Start over in order to
10079 get h, sym, sec etc. right. */
10084 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10090 && (tls_mask
& TLS_TPREL
) == 0)
10093 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
10094 if ((insn
& ((0x3f << 26) | (31 << 11)))
10095 == ((31 << 26) | (13 << 11)))
10096 rtra
= insn
& ((1 << 26) - (1 << 16));
10097 else if ((insn
& ((0x3f << 26) | (31 << 16)))
10098 == ((31 << 26) | (13 << 16)))
10099 rtra
= (insn
& (31 << 21)) | ((insn
& (31 << 11)) << 5);
10102 if ((insn
& ((1 << 11) - (1 << 1))) == 266 << 1)
10105 else if ((insn
& (31 << 1)) == 23 << 1
10106 && ((insn
& (31 << 6)) < 14 << 6
10107 || ((insn
& (31 << 6)) >= 16 << 6
10108 && (insn
& (31 << 6)) < 24 << 6)))
10109 /* load and store indexed -> dform. */
10110 insn
= (32 | ((insn
>> 6) & 31)) << 26;
10111 else if ((insn
& (31 << 1)) == 21 << 1
10112 && (insn
& (0x1a << 6)) == 0)
10113 /* ldx, ldux, stdx, stdux -> ld, ldu, std, stdu. */
10114 insn
= (((58 | ((insn
>> 6) & 4)) << 26)
10115 | ((insn
>> 6) & 1));
10116 else if ((insn
& (31 << 1)) == 21 << 1
10117 && (insn
& ((1 << 11) - (1 << 1))) == 341 << 1)
10119 insn
= (58 << 26) | 2;
10123 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10124 /* Was PPC64_TLS which sits on insn boundary, now
10125 PPC64_TPREL16_LO which is at low-order half-word. */
10126 rel
->r_offset
+= d_offset
;
10127 r_type
= R_PPC64_TPREL16_LO
;
10128 if (toc_symndx
!= 0)
10130 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
10131 /* We changed the symbol. Start over in order to
10132 get h, sym, sec etc. right. */
10137 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10141 case R_PPC64_GOT_TLSGD16_HI
:
10142 case R_PPC64_GOT_TLSGD16_HA
:
10143 tls_gd
= TLS_TPRELGD
;
10144 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10148 case R_PPC64_GOT_TLSLD16_HI
:
10149 case R_PPC64_GOT_TLSLD16_HA
:
10150 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10153 if ((tls_mask
& tls_gd
) != 0)
10154 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10155 + R_PPC64_GOT_TPREL16_DS
);
10158 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10159 rel
->r_offset
-= d_offset
;
10160 r_type
= R_PPC64_NONE
;
10162 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10166 case R_PPC64_GOT_TLSGD16
:
10167 case R_PPC64_GOT_TLSGD16_LO
:
10168 tls_gd
= TLS_TPRELGD
;
10169 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
10170 goto tls_get_addr_check
;
10173 case R_PPC64_GOT_TLSLD16
:
10174 case R_PPC64_GOT_TLSLD16_LO
:
10175 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
10177 tls_get_addr_check
:
10178 if (rel
+ 1 < relend
)
10180 enum elf_ppc64_reloc_type r_type2
;
10181 unsigned long r_symndx2
;
10182 struct elf_link_hash_entry
*h2
;
10183 bfd_vma insn1
, insn2
, insn3
;
10186 /* The next instruction should be a call to
10187 __tls_get_addr. Peek at the reloc to be sure. */
10188 r_type2
= ELF64_R_TYPE (rel
[1].r_info
);
10189 r_symndx2
= ELF64_R_SYM (rel
[1].r_info
);
10190 if (r_symndx2
< symtab_hdr
->sh_info
10191 || (r_type2
!= R_PPC64_REL14
10192 && r_type2
!= R_PPC64_REL14_BRTAKEN
10193 && r_type2
!= R_PPC64_REL14_BRNTAKEN
10194 && r_type2
!= R_PPC64_REL24
))
10197 h2
= sym_hashes
[r_symndx2
- symtab_hdr
->sh_info
];
10198 while (h2
->root
.type
== bfd_link_hash_indirect
10199 || h2
->root
.type
== bfd_link_hash_warning
)
10200 h2
= (struct elf_link_hash_entry
*) h2
->root
.u
.i
.link
;
10201 if (h2
== NULL
|| (h2
!= &htab
->tls_get_addr
->elf
10202 && h2
!= &htab
->tls_get_addr_fd
->elf
))
10205 /* OK, it checks out. Replace the call. */
10206 offset
= rel
[1].r_offset
;
10207 insn1
= bfd_get_32 (output_bfd
,
10208 contents
+ rel
->r_offset
- d_offset
);
10209 insn3
= bfd_get_32 (output_bfd
,
10210 contents
+ offset
+ 4);
10211 if ((tls_mask
& tls_gd
) != 0)
10214 insn1
&= (1 << 26) - (1 << 2);
10215 insn1
|= 58 << 26; /* ld */
10216 insn2
= 0x7c636a14; /* add 3,3,13 */
10217 rel
[1].r_info
= ELF64_R_INFO (r_symndx2
, R_PPC64_NONE
);
10218 if ((tls_mask
& TLS_EXPLICIT
) == 0)
10219 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
10220 + R_PPC64_GOT_TPREL16_DS
);
10222 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
10223 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10228 insn1
= 0x3c6d0000; /* addis 3,13,0 */
10229 insn2
= 0x38630000; /* addi 3,3,0 */
10232 /* Was an LD reloc. */
10234 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10235 rel
[1].r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10237 else if (toc_symndx
!= 0)
10238 r_symndx
= toc_symndx
;
10239 r_type
= R_PPC64_TPREL16_HA
;
10240 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10241 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
10242 R_PPC64_TPREL16_LO
);
10243 rel
[1].r_offset
+= d_offset
;
10246 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
10250 rel
[1].r_offset
+= 4;
10252 bfd_put_32 (output_bfd
, insn1
, contents
+ rel
->r_offset
- d_offset
);
10253 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
10254 bfd_put_32 (output_bfd
, insn3
, contents
+ offset
+ 4);
10255 if (tls_gd
== 0 || toc_symndx
!= 0)
10257 /* We changed the symbol. Start over in order
10258 to get h, sym, sec etc. right. */
10266 case R_PPC64_DTPMOD64
:
10267 if (rel
+ 1 < relend
10268 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
10269 && rel
[1].r_offset
== rel
->r_offset
+ 8)
10271 if ((tls_mask
& TLS_GD
) == 0)
10273 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
10274 if ((tls_mask
& TLS_TPRELGD
) != 0)
10275 r_type
= R_PPC64_TPREL64
;
10278 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10279 r_type
= R_PPC64_NONE
;
10281 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10286 if ((tls_mask
& TLS_LD
) == 0)
10288 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
10289 r_type
= R_PPC64_NONE
;
10290 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10295 case R_PPC64_TPREL64
:
10296 if ((tls_mask
& TLS_TPREL
) == 0)
10298 r_type
= R_PPC64_NONE
;
10299 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
10304 /* Handle other relocations that tweak non-addend part of insn. */
10306 max_br_offset
= 1 << 25;
10307 addend
= rel
->r_addend
;
10313 /* Branch taken prediction relocations. */
10314 case R_PPC64_ADDR14_BRTAKEN
:
10315 case R_PPC64_REL14_BRTAKEN
:
10316 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
10319 /* Branch not taken prediction relocations. */
10320 case R_PPC64_ADDR14_BRNTAKEN
:
10321 case R_PPC64_REL14_BRNTAKEN
:
10322 insn
|= bfd_get_32 (output_bfd
,
10323 contents
+ rel
->r_offset
) & ~(0x01 << 21);
10326 case R_PPC64_REL14
:
10327 max_br_offset
= 1 << 15;
10330 case R_PPC64_REL24
:
10331 /* Calls to functions with a different TOC, such as calls to
10332 shared objects, need to alter the TOC pointer. This is
10333 done using a linkage stub. A REL24 branching to these
10334 linkage stubs needs to be followed by a nop, as the nop
10335 will be replaced with an instruction to restore the TOC
10340 && (((fdh
= h
->oh
) != NULL
10341 && fdh
->elf
.plt
.plist
!= NULL
)
10342 || (fdh
= h
)->elf
.plt
.plist
!= NULL
))
10344 && sec
->output_section
!= NULL
10345 && sec
->id
<= htab
->top_id
10346 && (htab
->stub_group
[sec
->id
].toc_off
10347 != htab
->stub_group
[input_section
->id
].toc_off
)))
10348 && (stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
,
10349 rel
, htab
)) != NULL
10350 && (stub_entry
->stub_type
== ppc_stub_plt_call
10351 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
10352 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
10354 bfd_boolean can_plt_call
= FALSE
;
10356 if (rel
->r_offset
+ 8 <= input_section
->size
)
10359 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
10361 || nop
== CROR_151515
|| nop
== CROR_313131
)
10363 bfd_put_32 (input_bfd
, LD_R2_40R1
,
10364 contents
+ rel
->r_offset
+ 4);
10365 can_plt_call
= TRUE
;
10371 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
10373 /* If this is a plain branch rather than a branch
10374 and link, don't require a nop. However, don't
10375 allow tail calls in a shared library as they
10376 will result in r2 being corrupted. */
10378 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
10379 if (info
->executable
&& (br
& 1) == 0)
10380 can_plt_call
= TRUE
;
10385 && strcmp (h
->elf
.root
.root
.string
,
10386 ".__libc_start_main") == 0)
10388 /* Allow crt1 branch to go via a toc adjusting stub. */
10389 can_plt_call
= TRUE
;
10393 if (strcmp (input_section
->output_section
->name
,
10395 || strcmp (input_section
->output_section
->name
,
10397 (*_bfd_error_handler
)
10398 (_("%B(%A+0x%lx): automatic multiple TOCs "
10399 "not supported using your crt files; "
10400 "recompile with -mminimal-toc or upgrade gcc"),
10403 (long) rel
->r_offset
);
10405 (*_bfd_error_handler
)
10406 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
10407 "does not allow automatic multiple TOCs; "
10408 "recompile with -mminimal-toc or "
10409 "-fno-optimize-sibling-calls, "
10410 "or make `%s' extern"),
10413 (long) rel
->r_offset
,
10416 bfd_set_error (bfd_error_bad_value
);
10422 && stub_entry
->stub_type
== ppc_stub_plt_call
)
10423 unresolved_reloc
= FALSE
;
10426 if (stub_entry
== NULL
10427 && get_opd_info (sec
) != NULL
)
10429 /* The branch destination is the value of the opd entry. */
10430 bfd_vma off
= (relocation
+ addend
10431 - sec
->output_section
->vma
10432 - sec
->output_offset
);
10433 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
10434 if (dest
!= (bfd_vma
) -1)
10441 /* If the branch is out of reach we ought to have a long
10443 from
= (rel
->r_offset
10444 + input_section
->output_offset
10445 + input_section
->output_section
->vma
);
10447 if (stub_entry
== NULL
10448 && (relocation
+ addend
- from
+ max_br_offset
10449 >= 2 * max_br_offset
)
10450 && r_type
!= R_PPC64_ADDR14_BRTAKEN
10451 && r_type
!= R_PPC64_ADDR14_BRNTAKEN
)
10452 stub_entry
= ppc_get_stub_entry (input_section
, sec
, h
, rel
,
10455 if (stub_entry
!= NULL
)
10457 /* Munge up the value and addend so that we call the stub
10458 rather than the procedure directly. */
10459 relocation
= (stub_entry
->stub_offset
10460 + stub_entry
->stub_sec
->output_offset
10461 + stub_entry
->stub_sec
->output_section
->vma
);
10469 /* Set 'a' bit. This is 0b00010 in BO field for branch
10470 on CR(BI) insns (BO == 001at or 011at), and 0b01000
10471 for branch on CTR insns (BO == 1a00t or 1a01t). */
10472 if ((insn
& (0x14 << 21)) == (0x04 << 21))
10473 insn
|= 0x02 << 21;
10474 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
10475 insn
|= 0x08 << 21;
10481 /* Invert 'y' bit if not the default. */
10482 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
10483 insn
^= 0x01 << 21;
10486 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
10489 /* NOP out calls to undefined weak functions.
10490 We can thus call a weak function without first
10491 checking whether the function is defined. */
10493 && h
->elf
.root
.type
== bfd_link_hash_undefweak
10494 && r_type
== R_PPC64_REL24
10498 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
10504 /* Set `addend'. */
10509 (*_bfd_error_handler
)
10510 (_("%B: unknown relocation type %d for symbol %s"),
10511 input_bfd
, (int) r_type
, sym_name
);
10513 bfd_set_error (bfd_error_bad_value
);
10519 case R_PPC64_GNU_VTINHERIT
:
10520 case R_PPC64_GNU_VTENTRY
:
10523 /* GOT16 relocations. Like an ADDR16 using the symbol's
10524 address in the GOT as relocation value instead of the
10525 symbol's value itself. Also, create a GOT entry for the
10526 symbol and put the symbol value there. */
10527 case R_PPC64_GOT_TLSGD16
:
10528 case R_PPC64_GOT_TLSGD16_LO
:
10529 case R_PPC64_GOT_TLSGD16_HI
:
10530 case R_PPC64_GOT_TLSGD16_HA
:
10531 tls_type
= TLS_TLS
| TLS_GD
;
10534 case R_PPC64_GOT_TLSLD16
:
10535 case R_PPC64_GOT_TLSLD16_LO
:
10536 case R_PPC64_GOT_TLSLD16_HI
:
10537 case R_PPC64_GOT_TLSLD16_HA
:
10538 tls_type
= TLS_TLS
| TLS_LD
;
10541 case R_PPC64_GOT_TPREL16_DS
:
10542 case R_PPC64_GOT_TPREL16_LO_DS
:
10543 case R_PPC64_GOT_TPREL16_HI
:
10544 case R_PPC64_GOT_TPREL16_HA
:
10545 tls_type
= TLS_TLS
| TLS_TPREL
;
10548 case R_PPC64_GOT_DTPREL16_DS
:
10549 case R_PPC64_GOT_DTPREL16_LO_DS
:
10550 case R_PPC64_GOT_DTPREL16_HI
:
10551 case R_PPC64_GOT_DTPREL16_HA
:
10552 tls_type
= TLS_TLS
| TLS_DTPREL
;
10555 case R_PPC64_GOT16
:
10556 case R_PPC64_GOT16_LO
:
10557 case R_PPC64_GOT16_HI
:
10558 case R_PPC64_GOT16_HA
:
10559 case R_PPC64_GOT16_DS
:
10560 case R_PPC64_GOT16_LO_DS
:
10563 /* Relocation is to the entry for this symbol in the global
10568 unsigned long indx
= 0;
10570 if (tls_type
== (TLS_TLS
| TLS_LD
)
10572 || !h
->elf
.def_dynamic
))
10573 offp
= &ppc64_tlsld_got (input_bfd
)->offset
;
10576 struct got_entry
*ent
;
10580 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
10581 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
10584 && SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)))
10585 /* This is actually a static link, or it is a
10586 -Bsymbolic link and the symbol is defined
10587 locally, or the symbol was forced to be local
10588 because of a version file. */
10592 indx
= h
->elf
.dynindx
;
10593 unresolved_reloc
= FALSE
;
10595 ent
= h
->elf
.got
.glist
;
10599 if (local_got_ents
== NULL
)
10601 ent
= local_got_ents
[r_symndx
];
10604 for (; ent
!= NULL
; ent
= ent
->next
)
10605 if (ent
->addend
== orig_addend
10606 && ent
->owner
== input_bfd
10607 && ent
->tls_type
== tls_type
)
10611 offp
= &ent
->got
.offset
;
10614 got
= ppc64_elf_tdata (input_bfd
)->got
;
10618 /* The offset must always be a multiple of 8. We use the
10619 least significant bit to record whether we have already
10620 processed this entry. */
10622 if ((off
& 1) != 0)
10626 /* Generate relocs for the dynamic linker, except in
10627 the case of TLSLD where we'll use one entry per
10629 asection
*relgot
= ppc64_elf_tdata (input_bfd
)->relgot
;
10632 if ((info
->shared
|| indx
!= 0)
10634 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10635 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
10637 outrel
.r_offset
= (got
->output_section
->vma
10638 + got
->output_offset
10640 outrel
.r_addend
= addend
;
10641 if (tls_type
& (TLS_LD
| TLS_GD
))
10643 outrel
.r_addend
= 0;
10644 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
10645 if (tls_type
== (TLS_TLS
| TLS_GD
))
10647 loc
= relgot
->contents
;
10648 loc
+= (relgot
->reloc_count
++
10649 * sizeof (Elf64_External_Rela
));
10650 bfd_elf64_swap_reloca_out (output_bfd
,
10652 outrel
.r_offset
+= 8;
10653 outrel
.r_addend
= addend
;
10655 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10658 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
10659 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
10660 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10661 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
10662 else if (indx
== 0)
10664 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_RELATIVE
);
10666 /* Write the .got section contents for the sake
10668 loc
= got
->contents
+ off
;
10669 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
10673 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
10675 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
10677 outrel
.r_addend
+= relocation
;
10678 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
10679 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
10681 loc
= relgot
->contents
;
10682 loc
+= (relgot
->reloc_count
++
10683 * sizeof (Elf64_External_Rela
));
10684 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
10687 /* Init the .got section contents here if we're not
10688 emitting a reloc. */
10691 relocation
+= addend
;
10692 if (tls_type
== (TLS_TLS
| TLS_LD
))
10694 else if (tls_type
!= 0)
10696 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10697 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
10698 relocation
+= DTP_OFFSET
- TP_OFFSET
;
10700 if (tls_type
== (TLS_TLS
| TLS_GD
))
10702 bfd_put_64 (output_bfd
, relocation
,
10703 got
->contents
+ off
+ 8);
10708 bfd_put_64 (output_bfd
, relocation
,
10709 got
->contents
+ off
);
10713 if (off
>= (bfd_vma
) -2)
10716 relocation
= got
->output_offset
+ off
;
10718 /* TOC base (r2) is TOC start plus 0x8000. */
10719 addend
= -TOC_BASE_OFF
;
10723 case R_PPC64_PLT16_HA
:
10724 case R_PPC64_PLT16_HI
:
10725 case R_PPC64_PLT16_LO
:
10726 case R_PPC64_PLT32
:
10727 case R_PPC64_PLT64
:
10728 /* Relocation is to the entry for this symbol in the
10729 procedure linkage table. */
10731 /* Resolve a PLT reloc against a local symbol directly,
10732 without using the procedure linkage table. */
10736 /* It's possible that we didn't make a PLT entry for this
10737 symbol. This happens when statically linking PIC code,
10738 or when using -Bsymbolic. Go find a match if there is a
10740 if (htab
->plt
!= NULL
)
10742 struct plt_entry
*ent
;
10743 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
10744 if (ent
->addend
== orig_addend
10745 && ent
->plt
.offset
!= (bfd_vma
) -1)
10747 relocation
= (htab
->plt
->output_section
->vma
10748 + htab
->plt
->output_offset
10749 + ent
->plt
.offset
);
10750 unresolved_reloc
= FALSE
;
10756 /* Relocation value is TOC base. */
10757 relocation
= TOCstart
;
10759 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
10760 else if (unresolved_reloc
)
10762 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
10763 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
10765 unresolved_reloc
= TRUE
;
10768 /* TOC16 relocs. We want the offset relative to the TOC base,
10769 which is the address of the start of the TOC plus 0x8000.
10770 The TOC consists of sections .got, .toc, .tocbss, and .plt,
10772 case R_PPC64_TOC16
:
10773 case R_PPC64_TOC16_LO
:
10774 case R_PPC64_TOC16_HI
:
10775 case R_PPC64_TOC16_DS
:
10776 case R_PPC64_TOC16_LO_DS
:
10777 case R_PPC64_TOC16_HA
:
10778 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
10781 /* Relocate against the beginning of the section. */
10782 case R_PPC64_SECTOFF
:
10783 case R_PPC64_SECTOFF_LO
:
10784 case R_PPC64_SECTOFF_HI
:
10785 case R_PPC64_SECTOFF_DS
:
10786 case R_PPC64_SECTOFF_LO_DS
:
10787 case R_PPC64_SECTOFF_HA
:
10789 addend
-= sec
->output_section
->vma
;
10792 case R_PPC64_REL14
:
10793 case R_PPC64_REL14_BRNTAKEN
:
10794 case R_PPC64_REL14_BRTAKEN
:
10795 case R_PPC64_REL24
:
10798 case R_PPC64_TPREL16
:
10799 case R_PPC64_TPREL16_LO
:
10800 case R_PPC64_TPREL16_HI
:
10801 case R_PPC64_TPREL16_HA
:
10802 case R_PPC64_TPREL16_DS
:
10803 case R_PPC64_TPREL16_LO_DS
:
10804 case R_PPC64_TPREL16_HIGHER
:
10805 case R_PPC64_TPREL16_HIGHERA
:
10806 case R_PPC64_TPREL16_HIGHEST
:
10807 case R_PPC64_TPREL16_HIGHESTA
:
10808 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10810 /* The TPREL16 relocs shouldn't really be used in shared
10811 libs as they will result in DT_TEXTREL being set, but
10812 support them anyway. */
10816 case R_PPC64_DTPREL16
:
10817 case R_PPC64_DTPREL16_LO
:
10818 case R_PPC64_DTPREL16_HI
:
10819 case R_PPC64_DTPREL16_HA
:
10820 case R_PPC64_DTPREL16_DS
:
10821 case R_PPC64_DTPREL16_LO_DS
:
10822 case R_PPC64_DTPREL16_HIGHER
:
10823 case R_PPC64_DTPREL16_HIGHERA
:
10824 case R_PPC64_DTPREL16_HIGHEST
:
10825 case R_PPC64_DTPREL16_HIGHESTA
:
10826 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10829 case R_PPC64_DTPMOD64
:
10834 case R_PPC64_TPREL64
:
10835 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
10838 case R_PPC64_DTPREL64
:
10839 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
10842 /* Relocations that may need to be propagated if this is a
10844 case R_PPC64_REL30
:
10845 case R_PPC64_REL32
:
10846 case R_PPC64_REL64
:
10847 case R_PPC64_ADDR14
:
10848 case R_PPC64_ADDR14_BRNTAKEN
:
10849 case R_PPC64_ADDR14_BRTAKEN
:
10850 case R_PPC64_ADDR16
:
10851 case R_PPC64_ADDR16_DS
:
10852 case R_PPC64_ADDR16_HA
:
10853 case R_PPC64_ADDR16_HI
:
10854 case R_PPC64_ADDR16_HIGHER
:
10855 case R_PPC64_ADDR16_HIGHERA
:
10856 case R_PPC64_ADDR16_HIGHEST
:
10857 case R_PPC64_ADDR16_HIGHESTA
:
10858 case R_PPC64_ADDR16_LO
:
10859 case R_PPC64_ADDR16_LO_DS
:
10860 case R_PPC64_ADDR24
:
10861 case R_PPC64_ADDR32
:
10862 case R_PPC64_ADDR64
:
10863 case R_PPC64_UADDR16
:
10864 case R_PPC64_UADDR32
:
10865 case R_PPC64_UADDR64
:
10867 if ((input_section
->flags
& SEC_ALLOC
) == 0)
10870 if (NO_OPD_RELOCS
&& is_opd
)
10875 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
10876 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
10877 && (MUST_BE_DYN_RELOC (r_type
)
10878 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
10879 || (ELIMINATE_COPY_RELOCS
10882 && h
->elf
.dynindx
!= -1
10883 && !h
->elf
.non_got_ref
10884 && h
->elf
.def_dynamic
10885 && !h
->elf
.def_regular
))
10887 Elf_Internal_Rela outrel
;
10888 bfd_boolean skip
, relocate
;
10893 /* When generating a dynamic object, these relocations
10894 are copied into the output file to be resolved at run
10900 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
10901 input_section
, rel
->r_offset
);
10902 if (out_off
== (bfd_vma
) -1)
10904 else if (out_off
== (bfd_vma
) -2)
10905 skip
= TRUE
, relocate
= TRUE
;
10906 out_off
+= (input_section
->output_section
->vma
10907 + input_section
->output_offset
);
10908 outrel
.r_offset
= out_off
;
10909 outrel
.r_addend
= rel
->r_addend
;
10911 /* Optimize unaligned reloc use. */
10912 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
10913 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
10914 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
10915 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
10916 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
10917 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
10918 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
10919 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
10920 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
10923 memset (&outrel
, 0, sizeof outrel
);
10924 else if (!SYMBOL_REFERENCES_LOCAL (info
, &h
->elf
)
10926 && r_type
!= R_PPC64_TOC
)
10927 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
10930 /* This symbol is local, or marked to become local,
10931 or this is an opd section reloc which must point
10932 at a local function. */
10933 outrel
.r_addend
+= relocation
;
10934 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
10936 if (is_opd
&& h
!= NULL
)
10938 /* Lie about opd entries. This case occurs
10939 when building shared libraries and we
10940 reference a function in another shared
10941 lib. The same thing happens for a weak
10942 definition in an application that's
10943 overridden by a strong definition in a
10944 shared lib. (I believe this is a generic
10945 bug in binutils handling of weak syms.)
10946 In these cases we won't use the opd
10947 entry in this lib. */
10948 unresolved_reloc
= FALSE
;
10950 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
10952 /* We need to relocate .opd contents for ld.so.
10953 Prelink also wants simple and consistent rules
10954 for relocs. This make all RELATIVE relocs have
10955 *r_offset equal to r_addend. */
10962 if (bfd_is_abs_section (sec
))
10964 else if (sec
== NULL
|| sec
->owner
== NULL
)
10966 bfd_set_error (bfd_error_bad_value
);
10973 osec
= sec
->output_section
;
10974 indx
= elf_section_data (osec
)->dynindx
;
10978 if ((osec
->flags
& SEC_READONLY
) == 0
10979 && htab
->elf
.data_index_section
!= NULL
)
10980 osec
= htab
->elf
.data_index_section
;
10982 osec
= htab
->elf
.text_index_section
;
10983 indx
= elf_section_data (osec
)->dynindx
;
10985 BFD_ASSERT (indx
!= 0);
10987 /* We are turning this relocation into one
10988 against a section symbol, so subtract out
10989 the output section's address but not the
10990 offset of the input section in the output
10992 outrel
.r_addend
-= osec
->vma
;
10995 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
10999 sreloc
= elf_section_data (input_section
)->sreloc
;
11000 if (sreloc
== NULL
)
11003 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
11006 loc
= sreloc
->contents
;
11007 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11008 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
11010 /* If this reloc is against an external symbol, it will
11011 be computed at runtime, so there's no need to do
11012 anything now. However, for the sake of prelink ensure
11013 that the section contents are a known value. */
11016 unresolved_reloc
= FALSE
;
11017 /* The value chosen here is quite arbitrary as ld.so
11018 ignores section contents except for the special
11019 case of .opd where the contents might be accessed
11020 before relocation. Choose zero, as that won't
11021 cause reloc overflow. */
11024 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
11025 to improve backward compatibility with older
11027 if (r_type
== R_PPC64_ADDR64
)
11028 addend
= outrel
.r_addend
;
11029 /* Adjust pc_relative relocs to have zero in *r_offset. */
11030 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
11031 addend
= (input_section
->output_section
->vma
11032 + input_section
->output_offset
11039 case R_PPC64_GLOB_DAT
:
11040 case R_PPC64_JMP_SLOT
:
11041 case R_PPC64_RELATIVE
:
11042 /* We shouldn't ever see these dynamic relocs in relocatable
11044 /* Fall through. */
11046 case R_PPC64_PLTGOT16
:
11047 case R_PPC64_PLTGOT16_DS
:
11048 case R_PPC64_PLTGOT16_HA
:
11049 case R_PPC64_PLTGOT16_HI
:
11050 case R_PPC64_PLTGOT16_LO
:
11051 case R_PPC64_PLTGOT16_LO_DS
:
11052 case R_PPC64_PLTREL32
:
11053 case R_PPC64_PLTREL64
:
11054 /* These ones haven't been implemented yet. */
11056 (*_bfd_error_handler
)
11057 (_("%B: relocation %s is not supported for symbol %s."),
11059 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
11061 bfd_set_error (bfd_error_invalid_operation
);
11066 /* Do any further special processing. */
11072 case R_PPC64_ADDR16_HA
:
11073 case R_PPC64_ADDR16_HIGHERA
:
11074 case R_PPC64_ADDR16_HIGHESTA
:
11075 case R_PPC64_TOC16_HA
:
11076 case R_PPC64_SECTOFF_HA
:
11077 case R_PPC64_TPREL16_HA
:
11078 case R_PPC64_DTPREL16_HA
:
11079 case R_PPC64_TPREL16_HIGHER
:
11080 case R_PPC64_TPREL16_HIGHERA
:
11081 case R_PPC64_TPREL16_HIGHEST
:
11082 case R_PPC64_TPREL16_HIGHESTA
:
11083 case R_PPC64_DTPREL16_HIGHER
:
11084 case R_PPC64_DTPREL16_HIGHERA
:
11085 case R_PPC64_DTPREL16_HIGHEST
:
11086 case R_PPC64_DTPREL16_HIGHESTA
:
11087 /* It's just possible that this symbol is a weak symbol
11088 that's not actually defined anywhere. In that case,
11089 'sec' would be NULL, and we should leave the symbol
11090 alone (it will be set to zero elsewhere in the link). */
11095 case R_PPC64_GOT16_HA
:
11096 case R_PPC64_PLTGOT16_HA
:
11097 case R_PPC64_PLT16_HA
:
11098 case R_PPC64_GOT_TLSGD16_HA
:
11099 case R_PPC64_GOT_TLSLD16_HA
:
11100 case R_PPC64_GOT_TPREL16_HA
:
11101 case R_PPC64_GOT_DTPREL16_HA
:
11102 /* Add 0x10000 if sign bit in 0:15 is set.
11103 Bits 0:15 are not used. */
11107 case R_PPC64_ADDR16_DS
:
11108 case R_PPC64_ADDR16_LO_DS
:
11109 case R_PPC64_GOT16_DS
:
11110 case R_PPC64_GOT16_LO_DS
:
11111 case R_PPC64_PLT16_LO_DS
:
11112 case R_PPC64_SECTOFF_DS
:
11113 case R_PPC64_SECTOFF_LO_DS
:
11114 case R_PPC64_TOC16_DS
:
11115 case R_PPC64_TOC16_LO_DS
:
11116 case R_PPC64_PLTGOT16_DS
:
11117 case R_PPC64_PLTGOT16_LO_DS
:
11118 case R_PPC64_GOT_TPREL16_DS
:
11119 case R_PPC64_GOT_TPREL16_LO_DS
:
11120 case R_PPC64_GOT_DTPREL16_DS
:
11121 case R_PPC64_GOT_DTPREL16_LO_DS
:
11122 case R_PPC64_TPREL16_DS
:
11123 case R_PPC64_TPREL16_LO_DS
:
11124 case R_PPC64_DTPREL16_DS
:
11125 case R_PPC64_DTPREL16_LO_DS
:
11126 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
11128 /* If this reloc is against an lq insn, then the value must be
11129 a multiple of 16. This is somewhat of a hack, but the
11130 "correct" way to do this by defining _DQ forms of all the
11131 _DS relocs bloats all reloc switches in this file. It
11132 doesn't seem to make much sense to use any of these relocs
11133 in data, so testing the insn should be safe. */
11134 if ((insn
& (0x3f << 26)) == (56u << 26))
11136 if (((relocation
+ addend
) & mask
) != 0)
11138 (*_bfd_error_handler
)
11139 (_("%B: error: relocation %s not a multiple of %d"),
11141 ppc64_elf_howto_table
[r_type
]->name
,
11143 bfd_set_error (bfd_error_bad_value
);
11150 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
11151 because such sections are not SEC_ALLOC and thus ld.so will
11152 not process them. */
11153 if (unresolved_reloc
11154 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
11155 && h
->elf
.def_dynamic
))
11157 (*_bfd_error_handler
)
11158 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
11161 (long) rel
->r_offset
,
11162 ppc64_elf_howto_table
[(int) r_type
]->name
,
11163 h
->elf
.root
.root
.string
);
11167 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
11175 if (r
!= bfd_reloc_ok
)
11177 if (sym_name
== NULL
)
11178 sym_name
= "(null)";
11179 if (r
== bfd_reloc_overflow
)
11184 && h
->elf
.root
.type
== bfd_link_hash_undefweak
11185 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
11187 /* Assume this is a call protected by other code that
11188 detects the symbol is undefined. If this is the case,
11189 we can safely ignore the overflow. If not, the
11190 program is hosed anyway, and a little warning isn't
11196 if (!((*info
->callbacks
->reloc_overflow
)
11197 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
11198 ppc64_elf_howto_table
[r_type
]->name
,
11199 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
11204 (*_bfd_error_handler
)
11205 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
11208 (long) rel
->r_offset
,
11209 ppc64_elf_howto_table
[r_type
]->name
,
11217 /* If we're emitting relocations, then shortly after this function
11218 returns, reloc offsets and addends for this section will be
11219 adjusted. Worse, reloc symbol indices will be for the output
11220 file rather than the input. Save a copy of the relocs for
11221 opd_entry_value. */
11222 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
11225 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
11226 rel
= bfd_alloc (input_bfd
, amt
);
11227 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
11228 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
11231 memcpy (rel
, relocs
, amt
);
11236 /* Adjust the value of any local symbols in opd sections. */
11239 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
11240 const char *name ATTRIBUTE_UNUSED
,
11241 Elf_Internal_Sym
*elfsym
,
11242 asection
*input_sec
,
11243 struct elf_link_hash_entry
*h
)
11245 long *opd_adjust
, adjust
;
11251 opd_adjust
= get_opd_info (input_sec
);
11252 if (opd_adjust
== NULL
)
11255 value
= elfsym
->st_value
- input_sec
->output_offset
;
11256 if (!info
->relocatable
)
11257 value
-= input_sec
->output_section
->vma
;
11259 adjust
= opd_adjust
[value
/ 8];
11261 elfsym
->st_value
= 0;
11263 elfsym
->st_value
+= adjust
;
11267 /* Finish up dynamic symbol handling. We set the contents of various
11268 dynamic sections here. */
11271 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
11272 struct bfd_link_info
*info
,
11273 struct elf_link_hash_entry
*h
,
11274 Elf_Internal_Sym
*sym
)
11276 struct ppc_link_hash_table
*htab
;
11277 struct plt_entry
*ent
;
11278 Elf_Internal_Rela rela
;
11281 htab
= ppc_hash_table (info
);
11283 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
11284 if (ent
->plt
.offset
!= (bfd_vma
) -1)
11286 /* This symbol has an entry in the procedure linkage
11287 table. Set it up. */
11289 if (htab
->plt
== NULL
11290 || htab
->relplt
== NULL
11291 || htab
->glink
== NULL
)
11294 /* Create a JMP_SLOT reloc to inform the dynamic linker to
11295 fill in the PLT entry. */
11296 rela
.r_offset
= (htab
->plt
->output_section
->vma
11297 + htab
->plt
->output_offset
11298 + ent
->plt
.offset
);
11299 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
11300 rela
.r_addend
= ent
->addend
;
11302 loc
= htab
->relplt
->contents
;
11303 loc
+= ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
) / PLT_ENTRY_SIZE
11304 * sizeof (Elf64_External_Rela
));
11305 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11310 Elf_Internal_Rela rela
;
11313 /* This symbol needs a copy reloc. Set it up. */
11315 if (h
->dynindx
== -1
11316 || (h
->root
.type
!= bfd_link_hash_defined
11317 && h
->root
.type
!= bfd_link_hash_defweak
)
11318 || htab
->relbss
== NULL
)
11321 rela
.r_offset
= (h
->root
.u
.def
.value
11322 + h
->root
.u
.def
.section
->output_section
->vma
11323 + h
->root
.u
.def
.section
->output_offset
);
11324 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
11326 loc
= htab
->relbss
->contents
;
11327 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
11328 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
11331 /* Mark some specially defined symbols as absolute. */
11332 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
11333 sym
->st_shndx
= SHN_ABS
;
11338 /* Used to decide how to sort relocs in an optimal manner for the
11339 dynamic linker, before writing them out. */
11341 static enum elf_reloc_type_class
11342 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
11344 enum elf_ppc64_reloc_type r_type
;
11346 r_type
= ELF64_R_TYPE (rela
->r_info
);
11349 case R_PPC64_RELATIVE
:
11350 return reloc_class_relative
;
11351 case R_PPC64_JMP_SLOT
:
11352 return reloc_class_plt
;
11354 return reloc_class_copy
;
11356 return reloc_class_normal
;
11360 /* Finish up the dynamic sections. */
11363 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
11364 struct bfd_link_info
*info
)
11366 struct ppc_link_hash_table
*htab
;
11370 htab
= ppc_hash_table (info
);
11371 dynobj
= htab
->elf
.dynobj
;
11372 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
11374 if (htab
->elf
.dynamic_sections_created
)
11376 Elf64_External_Dyn
*dyncon
, *dynconend
;
11378 if (sdyn
== NULL
|| htab
->got
== NULL
)
11381 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
11382 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
11383 for (; dyncon
< dynconend
; dyncon
++)
11385 Elf_Internal_Dyn dyn
;
11388 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
11395 case DT_PPC64_GLINK
:
11397 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11398 /* We stupidly defined DT_PPC64_GLINK to be the start
11399 of glink rather than the first entry point, which is
11400 what ld.so needs, and now have a bigger stub to
11401 support automatic multiple TOCs. */
11402 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
11406 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11409 dyn
.d_un
.d_ptr
= s
->vma
;
11412 case DT_PPC64_OPDSZ
:
11413 s
= bfd_get_section_by_name (output_bfd
, ".opd");
11416 dyn
.d_un
.d_val
= s
->size
;
11421 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11426 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
11430 dyn
.d_un
.d_val
= htab
->relplt
->size
;
11434 /* Don't count procedure linkage table relocs in the
11435 overall reloc count. */
11439 dyn
.d_un
.d_val
-= s
->size
;
11443 /* We may not be using the standard ELF linker script.
11444 If .rela.plt is the first .rela section, we adjust
11445 DT_RELA to not include it. */
11449 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
11451 dyn
.d_un
.d_ptr
+= s
->size
;
11455 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
11459 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
11461 /* Fill in the first entry in the global offset table.
11462 We use it to hold the link-time TOCbase. */
11463 bfd_put_64 (output_bfd
,
11464 elf_gp (output_bfd
) + TOC_BASE_OFF
,
11465 htab
->got
->contents
);
11467 /* Set .got entry size. */
11468 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
11471 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
11473 /* Set .plt entry size. */
11474 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
11478 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
11479 brlt ourselves if emitrelocations. */
11480 if (htab
->brlt
!= NULL
11481 && htab
->brlt
->reloc_count
!= 0
11482 && !_bfd_elf_link_output_relocs (output_bfd
,
11484 &elf_section_data (htab
->brlt
)->rel_hdr
,
11485 elf_section_data (htab
->brlt
)->relocs
,
11489 /* We need to handle writing out multiple GOT sections ourselves,
11490 since we didn't add them to DYNOBJ. We know dynobj is the first
11492 while ((dynobj
= dynobj
->link_next
) != NULL
)
11496 if (!is_ppc64_elf_target (dynobj
->xvec
))
11499 s
= ppc64_elf_tdata (dynobj
)->got
;
11502 && s
->output_section
!= bfd_abs_section_ptr
11503 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11504 s
->contents
, s
->output_offset
,
11507 s
= ppc64_elf_tdata (dynobj
)->relgot
;
11510 && s
->output_section
!= bfd_abs_section_ptr
11511 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
11512 s
->contents
, s
->output_offset
,
11520 #include "elf64-target.h"