1 /* PowerPC64-specific support for 64-bit ELF.
2 Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
3 2009, 2010, 2011 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.
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 3 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. */
25 /* The 64-bit PowerPC ELF ABI may be found at
26 http://www.linuxbase.org/spec/ELF/ppc64/PPC-elf64abi.txt, and
27 http://www.linuxbase.org/spec/ELF/ppc64/spec/book1.html */
35 #include "elf/ppc64.h"
36 #include "elf64-ppc.h"
38 static bfd_reloc_status_type ppc64_elf_ha_reloc
39 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
40 static bfd_reloc_status_type ppc64_elf_branch_reloc
41 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
42 static bfd_reloc_status_type ppc64_elf_brtaken_reloc
43 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
44 static bfd_reloc_status_type ppc64_elf_sectoff_reloc
45 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
46 static bfd_reloc_status_type ppc64_elf_sectoff_ha_reloc
47 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
48 static bfd_reloc_status_type ppc64_elf_toc_reloc
49 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
50 static bfd_reloc_status_type ppc64_elf_toc_ha_reloc
51 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
52 static bfd_reloc_status_type ppc64_elf_toc64_reloc
53 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
54 static bfd_reloc_status_type ppc64_elf_unhandled_reloc
55 (bfd
*, arelent
*, asymbol
*, void *, asection
*, bfd
*, char **);
56 static bfd_vma opd_entry_value
57 (asection
*, bfd_vma
, asection
**, bfd_vma
*);
59 #define TARGET_LITTLE_SYM bfd_elf64_powerpcle_vec
60 #define TARGET_LITTLE_NAME "elf64-powerpcle"
61 #define TARGET_BIG_SYM bfd_elf64_powerpc_vec
62 #define TARGET_BIG_NAME "elf64-powerpc"
63 #define ELF_ARCH bfd_arch_powerpc
64 #define ELF_TARGET_ID PPC64_ELF_DATA
65 #define ELF_MACHINE_CODE EM_PPC64
66 #define ELF_MAXPAGESIZE 0x10000
67 #define ELF_COMMONPAGESIZE 0x1000
68 #define elf_info_to_howto ppc64_elf_info_to_howto
70 #define elf_backend_want_got_sym 0
71 #define elf_backend_want_plt_sym 0
72 #define elf_backend_plt_alignment 3
73 #define elf_backend_plt_not_loaded 1
74 #define elf_backend_got_header_size 8
75 #define elf_backend_can_gc_sections 1
76 #define elf_backend_can_refcount 1
77 #define elf_backend_rela_normal 1
78 #define elf_backend_default_execstack 0
80 #define bfd_elf64_mkobject ppc64_elf_mkobject
81 #define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
82 #define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
83 #define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
84 #define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
85 #define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
86 #define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
87 #define bfd_elf64_get_synthetic_symtab ppc64_elf_get_synthetic_symtab
89 #define elf_backend_object_p ppc64_elf_object_p
90 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
91 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
92 #define elf_backend_write_core_note ppc64_elf_write_core_note
93 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
94 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
95 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
96 #define elf_backend_check_directives ppc64_elf_process_dot_syms
97 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
98 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
99 #define elf_backend_check_relocs ppc64_elf_check_relocs
100 #define elf_backend_gc_keep ppc64_elf_gc_keep
101 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
102 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
103 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
104 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
105 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
106 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
107 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
108 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
109 #define elf_backend_action_discarded ppc64_elf_action_discarded
110 #define elf_backend_relocate_section ppc64_elf_relocate_section
111 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
112 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
113 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
114 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
115 #define elf_backend_special_sections ppc64_elf_special_sections
116 #define elf_backend_post_process_headers _bfd_elf_set_osabi
118 /* The name of the dynamic interpreter. This is put in the .interp
120 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
122 /* The size in bytes of an entry in the procedure linkage table. */
123 #define PLT_ENTRY_SIZE 24
125 /* The initial size of the plt reserved for the dynamic linker. */
126 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
128 /* TOC base pointers offset from start of TOC. */
129 #define TOC_BASE_OFF 0x8000
131 /* Offset of tp and dtp pointers from start of TLS block. */
132 #define TP_OFFSET 0x7000
133 #define DTP_OFFSET 0x8000
135 /* .plt call stub instructions. The normal stub is like this, but
136 sometimes the .plt entry crosses a 64k boundary and we need to
137 insert an addi to adjust r12. */
138 #define PLT_CALL_STUB_SIZE (7*4)
139 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
140 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
141 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
142 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
143 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
144 /* ld %r11,xxx+16@l(%r12) */
145 #define BCTR 0x4e800420 /* bctr */
148 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
149 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
150 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
151 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
153 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
154 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
156 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
158 /* glink call stub instructions. We enter with the index in R0. */
159 #define GLINK_CALL_STUB_SIZE (16*4)
163 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
164 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
166 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
167 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
168 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
169 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
177 #define NOP 0x60000000
179 /* Some other nops. */
180 #define CROR_151515 0x4def7b82
181 #define CROR_313131 0x4ffffb82
183 /* .glink entries for the first 32k functions are two instructions. */
184 #define LI_R0_0 0x38000000 /* li %r0,0 */
185 #define B_DOT 0x48000000 /* b . */
187 /* After that, we need two instructions to load the index, followed by
189 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
190 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
192 /* Instructions used by the save and restore reg functions. */
193 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
194 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
195 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
196 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
197 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
198 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
199 #define LI_R12_0 0x39800000 /* li %r12,0 */
200 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
201 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
202 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
203 #define BLR 0x4e800020 /* blr */
205 /* Since .opd is an array of descriptors and each entry will end up
206 with identical R_PPC64_RELATIVE relocs, there is really no need to
207 propagate .opd relocs; The dynamic linker should be taught to
208 relocate .opd without reloc entries. */
209 #ifndef NO_OPD_RELOCS
210 #define NO_OPD_RELOCS 0
213 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
215 /* Relocation HOWTO's. */
216 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
218 static reloc_howto_type ppc64_elf_howto_raw
[] = {
219 /* This reloc does nothing. */
220 HOWTO (R_PPC64_NONE
, /* type */
222 2, /* size (0 = byte, 1 = short, 2 = long) */
224 FALSE
, /* pc_relative */
226 complain_overflow_dont
, /* complain_on_overflow */
227 bfd_elf_generic_reloc
, /* special_function */
228 "R_PPC64_NONE", /* name */
229 FALSE
, /* partial_inplace */
232 FALSE
), /* pcrel_offset */
234 /* A standard 32 bit relocation. */
235 HOWTO (R_PPC64_ADDR32
, /* type */
237 2, /* size (0 = byte, 1 = short, 2 = long) */
239 FALSE
, /* pc_relative */
241 complain_overflow_bitfield
, /* complain_on_overflow */
242 bfd_elf_generic_reloc
, /* special_function */
243 "R_PPC64_ADDR32", /* name */
244 FALSE
, /* partial_inplace */
246 0xffffffff, /* dst_mask */
247 FALSE
), /* pcrel_offset */
249 /* An absolute 26 bit branch; the lower two bits must be zero.
250 FIXME: we don't check that, we just clear them. */
251 HOWTO (R_PPC64_ADDR24
, /* type */
253 2, /* size (0 = byte, 1 = short, 2 = long) */
255 FALSE
, /* pc_relative */
257 complain_overflow_bitfield
, /* complain_on_overflow */
258 bfd_elf_generic_reloc
, /* special_function */
259 "R_PPC64_ADDR24", /* name */
260 FALSE
, /* partial_inplace */
262 0x03fffffc, /* dst_mask */
263 FALSE
), /* pcrel_offset */
265 /* A standard 16 bit relocation. */
266 HOWTO (R_PPC64_ADDR16
, /* type */
268 1, /* size (0 = byte, 1 = short, 2 = long) */
270 FALSE
, /* pc_relative */
272 complain_overflow_bitfield
, /* complain_on_overflow */
273 bfd_elf_generic_reloc
, /* special_function */
274 "R_PPC64_ADDR16", /* name */
275 FALSE
, /* partial_inplace */
277 0xffff, /* dst_mask */
278 FALSE
), /* pcrel_offset */
280 /* A 16 bit relocation without overflow. */
281 HOWTO (R_PPC64_ADDR16_LO
, /* type */
283 1, /* size (0 = byte, 1 = short, 2 = long) */
285 FALSE
, /* pc_relative */
287 complain_overflow_dont
,/* complain_on_overflow */
288 bfd_elf_generic_reloc
, /* special_function */
289 "R_PPC64_ADDR16_LO", /* name */
290 FALSE
, /* partial_inplace */
292 0xffff, /* dst_mask */
293 FALSE
), /* pcrel_offset */
295 /* Bits 16-31 of an address. */
296 HOWTO (R_PPC64_ADDR16_HI
, /* type */
298 1, /* size (0 = byte, 1 = short, 2 = long) */
300 FALSE
, /* pc_relative */
302 complain_overflow_dont
, /* complain_on_overflow */
303 bfd_elf_generic_reloc
, /* special_function */
304 "R_PPC64_ADDR16_HI", /* name */
305 FALSE
, /* partial_inplace */
307 0xffff, /* dst_mask */
308 FALSE
), /* pcrel_offset */
310 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
311 bits, treated as a signed number, is negative. */
312 HOWTO (R_PPC64_ADDR16_HA
, /* type */
314 1, /* size (0 = byte, 1 = short, 2 = long) */
316 FALSE
, /* pc_relative */
318 complain_overflow_dont
, /* complain_on_overflow */
319 ppc64_elf_ha_reloc
, /* special_function */
320 "R_PPC64_ADDR16_HA", /* name */
321 FALSE
, /* partial_inplace */
323 0xffff, /* dst_mask */
324 FALSE
), /* pcrel_offset */
326 /* An absolute 16 bit branch; the lower two bits must be zero.
327 FIXME: we don't check that, we just clear them. */
328 HOWTO (R_PPC64_ADDR14
, /* type */
330 2, /* size (0 = byte, 1 = short, 2 = long) */
332 FALSE
, /* pc_relative */
334 complain_overflow_bitfield
, /* complain_on_overflow */
335 ppc64_elf_branch_reloc
, /* special_function */
336 "R_PPC64_ADDR14", /* name */
337 FALSE
, /* partial_inplace */
339 0x0000fffc, /* dst_mask */
340 FALSE
), /* pcrel_offset */
342 /* An absolute 16 bit branch, for which bit 10 should be set to
343 indicate that the branch is expected to be taken. The lower two
344 bits must be zero. */
345 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
347 2, /* size (0 = byte, 1 = short, 2 = long) */
349 FALSE
, /* pc_relative */
351 complain_overflow_bitfield
, /* complain_on_overflow */
352 ppc64_elf_brtaken_reloc
, /* special_function */
353 "R_PPC64_ADDR14_BRTAKEN",/* name */
354 FALSE
, /* partial_inplace */
356 0x0000fffc, /* dst_mask */
357 FALSE
), /* pcrel_offset */
359 /* An absolute 16 bit branch, for which bit 10 should be set to
360 indicate that the branch is not expected to be taken. The lower
361 two bits must be zero. */
362 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
364 2, /* size (0 = byte, 1 = short, 2 = long) */
366 FALSE
, /* pc_relative */
368 complain_overflow_bitfield
, /* complain_on_overflow */
369 ppc64_elf_brtaken_reloc
, /* special_function */
370 "R_PPC64_ADDR14_BRNTAKEN",/* name */
371 FALSE
, /* partial_inplace */
373 0x0000fffc, /* dst_mask */
374 FALSE
), /* pcrel_offset */
376 /* A relative 26 bit branch; the lower two bits must be zero. */
377 HOWTO (R_PPC64_REL24
, /* type */
379 2, /* size (0 = byte, 1 = short, 2 = long) */
381 TRUE
, /* pc_relative */
383 complain_overflow_signed
, /* complain_on_overflow */
384 ppc64_elf_branch_reloc
, /* special_function */
385 "R_PPC64_REL24", /* name */
386 FALSE
, /* partial_inplace */
388 0x03fffffc, /* dst_mask */
389 TRUE
), /* pcrel_offset */
391 /* A relative 16 bit branch; the lower two bits must be zero. */
392 HOWTO (R_PPC64_REL14
, /* type */
394 2, /* size (0 = byte, 1 = short, 2 = long) */
396 TRUE
, /* pc_relative */
398 complain_overflow_signed
, /* complain_on_overflow */
399 ppc64_elf_branch_reloc
, /* special_function */
400 "R_PPC64_REL14", /* name */
401 FALSE
, /* partial_inplace */
403 0x0000fffc, /* dst_mask */
404 TRUE
), /* pcrel_offset */
406 /* A relative 16 bit branch. Bit 10 should be set to indicate that
407 the branch is expected to be taken. The lower two bits must be
409 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
411 2, /* size (0 = byte, 1 = short, 2 = long) */
413 TRUE
, /* pc_relative */
415 complain_overflow_signed
, /* complain_on_overflow */
416 ppc64_elf_brtaken_reloc
, /* special_function */
417 "R_PPC64_REL14_BRTAKEN", /* name */
418 FALSE
, /* partial_inplace */
420 0x0000fffc, /* dst_mask */
421 TRUE
), /* pcrel_offset */
423 /* A relative 16 bit branch. Bit 10 should be set to indicate that
424 the branch is not expected to be taken. The lower two bits must
426 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
428 2, /* size (0 = byte, 1 = short, 2 = long) */
430 TRUE
, /* pc_relative */
432 complain_overflow_signed
, /* complain_on_overflow */
433 ppc64_elf_brtaken_reloc
, /* special_function */
434 "R_PPC64_REL14_BRNTAKEN",/* name */
435 FALSE
, /* partial_inplace */
437 0x0000fffc, /* dst_mask */
438 TRUE
), /* pcrel_offset */
440 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
442 HOWTO (R_PPC64_GOT16
, /* type */
444 1, /* size (0 = byte, 1 = short, 2 = long) */
446 FALSE
, /* pc_relative */
448 complain_overflow_signed
, /* complain_on_overflow */
449 ppc64_elf_unhandled_reloc
, /* special_function */
450 "R_PPC64_GOT16", /* name */
451 FALSE
, /* partial_inplace */
453 0xffff, /* dst_mask */
454 FALSE
), /* pcrel_offset */
456 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
458 HOWTO (R_PPC64_GOT16_LO
, /* type */
460 1, /* size (0 = byte, 1 = short, 2 = long) */
462 FALSE
, /* pc_relative */
464 complain_overflow_dont
, /* complain_on_overflow */
465 ppc64_elf_unhandled_reloc
, /* special_function */
466 "R_PPC64_GOT16_LO", /* name */
467 FALSE
, /* partial_inplace */
469 0xffff, /* dst_mask */
470 FALSE
), /* pcrel_offset */
472 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
474 HOWTO (R_PPC64_GOT16_HI
, /* type */
476 1, /* size (0 = byte, 1 = short, 2 = long) */
478 FALSE
, /* pc_relative */
480 complain_overflow_dont
,/* complain_on_overflow */
481 ppc64_elf_unhandled_reloc
, /* special_function */
482 "R_PPC64_GOT16_HI", /* name */
483 FALSE
, /* partial_inplace */
485 0xffff, /* dst_mask */
486 FALSE
), /* pcrel_offset */
488 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
490 HOWTO (R_PPC64_GOT16_HA
, /* type */
492 1, /* size (0 = byte, 1 = short, 2 = long) */
494 FALSE
, /* pc_relative */
496 complain_overflow_dont
,/* complain_on_overflow */
497 ppc64_elf_unhandled_reloc
, /* special_function */
498 "R_PPC64_GOT16_HA", /* name */
499 FALSE
, /* partial_inplace */
501 0xffff, /* dst_mask */
502 FALSE
), /* pcrel_offset */
504 /* This is used only by the dynamic linker. The symbol should exist
505 both in the object being run and in some shared library. The
506 dynamic linker copies the data addressed by the symbol from the
507 shared library into the object, because the object being
508 run has to have the data at some particular address. */
509 HOWTO (R_PPC64_COPY
, /* type */
511 0, /* this one is variable size */
513 FALSE
, /* pc_relative */
515 complain_overflow_dont
, /* complain_on_overflow */
516 ppc64_elf_unhandled_reloc
, /* special_function */
517 "R_PPC64_COPY", /* name */
518 FALSE
, /* partial_inplace */
521 FALSE
), /* pcrel_offset */
523 /* Like R_PPC64_ADDR64, but used when setting global offset table
525 HOWTO (R_PPC64_GLOB_DAT
, /* type */
527 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
529 FALSE
, /* pc_relative */
531 complain_overflow_dont
, /* complain_on_overflow */
532 ppc64_elf_unhandled_reloc
, /* special_function */
533 "R_PPC64_GLOB_DAT", /* name */
534 FALSE
, /* partial_inplace */
536 ONES (64), /* dst_mask */
537 FALSE
), /* pcrel_offset */
539 /* Created by the link editor. Marks a procedure linkage table
540 entry for a symbol. */
541 HOWTO (R_PPC64_JMP_SLOT
, /* type */
543 0, /* size (0 = byte, 1 = short, 2 = long) */
545 FALSE
, /* pc_relative */
547 complain_overflow_dont
, /* complain_on_overflow */
548 ppc64_elf_unhandled_reloc
, /* special_function */
549 "R_PPC64_JMP_SLOT", /* name */
550 FALSE
, /* partial_inplace */
553 FALSE
), /* pcrel_offset */
555 /* Used only by the dynamic linker. When the object is run, this
556 doubleword64 is set to the load address of the object, plus the
558 HOWTO (R_PPC64_RELATIVE
, /* type */
560 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
562 FALSE
, /* pc_relative */
564 complain_overflow_dont
, /* complain_on_overflow */
565 bfd_elf_generic_reloc
, /* special_function */
566 "R_PPC64_RELATIVE", /* name */
567 FALSE
, /* partial_inplace */
569 ONES (64), /* dst_mask */
570 FALSE
), /* pcrel_offset */
572 /* Like R_PPC64_ADDR32, but may be unaligned. */
573 HOWTO (R_PPC64_UADDR32
, /* type */
575 2, /* size (0 = byte, 1 = short, 2 = long) */
577 FALSE
, /* pc_relative */
579 complain_overflow_bitfield
, /* complain_on_overflow */
580 bfd_elf_generic_reloc
, /* special_function */
581 "R_PPC64_UADDR32", /* name */
582 FALSE
, /* partial_inplace */
584 0xffffffff, /* dst_mask */
585 FALSE
), /* pcrel_offset */
587 /* Like R_PPC64_ADDR16, but may be unaligned. */
588 HOWTO (R_PPC64_UADDR16
, /* type */
590 1, /* size (0 = byte, 1 = short, 2 = long) */
592 FALSE
, /* pc_relative */
594 complain_overflow_bitfield
, /* complain_on_overflow */
595 bfd_elf_generic_reloc
, /* special_function */
596 "R_PPC64_UADDR16", /* name */
597 FALSE
, /* partial_inplace */
599 0xffff, /* dst_mask */
600 FALSE
), /* pcrel_offset */
602 /* 32-bit PC relative. */
603 HOWTO (R_PPC64_REL32
, /* type */
605 2, /* size (0 = byte, 1 = short, 2 = long) */
607 TRUE
, /* pc_relative */
609 /* FIXME: Verify. Was complain_overflow_bitfield. */
610 complain_overflow_signed
, /* complain_on_overflow */
611 bfd_elf_generic_reloc
, /* special_function */
612 "R_PPC64_REL32", /* name */
613 FALSE
, /* partial_inplace */
615 0xffffffff, /* dst_mask */
616 TRUE
), /* pcrel_offset */
618 /* 32-bit relocation to the symbol's procedure linkage table. */
619 HOWTO (R_PPC64_PLT32
, /* type */
621 2, /* size (0 = byte, 1 = short, 2 = long) */
623 FALSE
, /* pc_relative */
625 complain_overflow_bitfield
, /* complain_on_overflow */
626 ppc64_elf_unhandled_reloc
, /* special_function */
627 "R_PPC64_PLT32", /* name */
628 FALSE
, /* partial_inplace */
630 0xffffffff, /* dst_mask */
631 FALSE
), /* pcrel_offset */
633 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
634 FIXME: R_PPC64_PLTREL32 not supported. */
635 HOWTO (R_PPC64_PLTREL32
, /* type */
637 2, /* size (0 = byte, 1 = short, 2 = long) */
639 TRUE
, /* pc_relative */
641 complain_overflow_signed
, /* complain_on_overflow */
642 bfd_elf_generic_reloc
, /* special_function */
643 "R_PPC64_PLTREL32", /* name */
644 FALSE
, /* partial_inplace */
646 0xffffffff, /* dst_mask */
647 TRUE
), /* pcrel_offset */
649 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
651 HOWTO (R_PPC64_PLT16_LO
, /* type */
653 1, /* size (0 = byte, 1 = short, 2 = long) */
655 FALSE
, /* pc_relative */
657 complain_overflow_dont
, /* complain_on_overflow */
658 ppc64_elf_unhandled_reloc
, /* special_function */
659 "R_PPC64_PLT16_LO", /* name */
660 FALSE
, /* partial_inplace */
662 0xffff, /* dst_mask */
663 FALSE
), /* pcrel_offset */
665 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
667 HOWTO (R_PPC64_PLT16_HI
, /* type */
669 1, /* size (0 = byte, 1 = short, 2 = long) */
671 FALSE
, /* pc_relative */
673 complain_overflow_dont
, /* complain_on_overflow */
674 ppc64_elf_unhandled_reloc
, /* special_function */
675 "R_PPC64_PLT16_HI", /* name */
676 FALSE
, /* partial_inplace */
678 0xffff, /* dst_mask */
679 FALSE
), /* pcrel_offset */
681 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
683 HOWTO (R_PPC64_PLT16_HA
, /* type */
685 1, /* size (0 = byte, 1 = short, 2 = long) */
687 FALSE
, /* pc_relative */
689 complain_overflow_dont
, /* complain_on_overflow */
690 ppc64_elf_unhandled_reloc
, /* special_function */
691 "R_PPC64_PLT16_HA", /* name */
692 FALSE
, /* partial_inplace */
694 0xffff, /* dst_mask */
695 FALSE
), /* pcrel_offset */
697 /* 16-bit section relative relocation. */
698 HOWTO (R_PPC64_SECTOFF
, /* type */
700 1, /* size (0 = byte, 1 = short, 2 = long) */
702 FALSE
, /* pc_relative */
704 complain_overflow_bitfield
, /* complain_on_overflow */
705 ppc64_elf_sectoff_reloc
, /* special_function */
706 "R_PPC64_SECTOFF", /* name */
707 FALSE
, /* partial_inplace */
709 0xffff, /* dst_mask */
710 FALSE
), /* pcrel_offset */
712 /* Like R_PPC64_SECTOFF, but no overflow warning. */
713 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
715 1, /* size (0 = byte, 1 = short, 2 = long) */
717 FALSE
, /* pc_relative */
719 complain_overflow_dont
, /* complain_on_overflow */
720 ppc64_elf_sectoff_reloc
, /* special_function */
721 "R_PPC64_SECTOFF_LO", /* name */
722 FALSE
, /* partial_inplace */
724 0xffff, /* dst_mask */
725 FALSE
), /* pcrel_offset */
727 /* 16-bit upper half section relative relocation. */
728 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
730 1, /* size (0 = byte, 1 = short, 2 = long) */
732 FALSE
, /* pc_relative */
734 complain_overflow_dont
, /* complain_on_overflow */
735 ppc64_elf_sectoff_reloc
, /* special_function */
736 "R_PPC64_SECTOFF_HI", /* name */
737 FALSE
, /* partial_inplace */
739 0xffff, /* dst_mask */
740 FALSE
), /* pcrel_offset */
742 /* 16-bit upper half adjusted section relative relocation. */
743 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
745 1, /* size (0 = byte, 1 = short, 2 = long) */
747 FALSE
, /* pc_relative */
749 complain_overflow_dont
, /* complain_on_overflow */
750 ppc64_elf_sectoff_ha_reloc
, /* special_function */
751 "R_PPC64_SECTOFF_HA", /* name */
752 FALSE
, /* partial_inplace */
754 0xffff, /* dst_mask */
755 FALSE
), /* pcrel_offset */
757 /* Like R_PPC64_REL24 without touching the two least significant bits. */
758 HOWTO (R_PPC64_REL30
, /* type */
760 2, /* size (0 = byte, 1 = short, 2 = long) */
762 TRUE
, /* pc_relative */
764 complain_overflow_dont
, /* complain_on_overflow */
765 bfd_elf_generic_reloc
, /* special_function */
766 "R_PPC64_REL30", /* name */
767 FALSE
, /* partial_inplace */
769 0xfffffffc, /* dst_mask */
770 TRUE
), /* pcrel_offset */
772 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
774 /* A standard 64-bit relocation. */
775 HOWTO (R_PPC64_ADDR64
, /* type */
777 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
779 FALSE
, /* pc_relative */
781 complain_overflow_dont
, /* complain_on_overflow */
782 bfd_elf_generic_reloc
, /* special_function */
783 "R_PPC64_ADDR64", /* name */
784 FALSE
, /* partial_inplace */
786 ONES (64), /* dst_mask */
787 FALSE
), /* pcrel_offset */
789 /* The bits 32-47 of an address. */
790 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
792 1, /* size (0 = byte, 1 = short, 2 = long) */
794 FALSE
, /* pc_relative */
796 complain_overflow_dont
, /* complain_on_overflow */
797 bfd_elf_generic_reloc
, /* special_function */
798 "R_PPC64_ADDR16_HIGHER", /* name */
799 FALSE
, /* partial_inplace */
801 0xffff, /* dst_mask */
802 FALSE
), /* pcrel_offset */
804 /* The bits 32-47 of an address, plus 1 if the contents of the low
805 16 bits, treated as a signed number, is negative. */
806 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
808 1, /* size (0 = byte, 1 = short, 2 = long) */
810 FALSE
, /* pc_relative */
812 complain_overflow_dont
, /* complain_on_overflow */
813 ppc64_elf_ha_reloc
, /* special_function */
814 "R_PPC64_ADDR16_HIGHERA", /* name */
815 FALSE
, /* partial_inplace */
817 0xffff, /* dst_mask */
818 FALSE
), /* pcrel_offset */
820 /* The bits 48-63 of an address. */
821 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
823 1, /* size (0 = byte, 1 = short, 2 = long) */
825 FALSE
, /* pc_relative */
827 complain_overflow_dont
, /* complain_on_overflow */
828 bfd_elf_generic_reloc
, /* special_function */
829 "R_PPC64_ADDR16_HIGHEST", /* name */
830 FALSE
, /* partial_inplace */
832 0xffff, /* dst_mask */
833 FALSE
), /* pcrel_offset */
835 /* The bits 48-63 of an address, plus 1 if the contents of the low
836 16 bits, treated as a signed number, is negative. */
837 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
839 1, /* size (0 = byte, 1 = short, 2 = long) */
841 FALSE
, /* pc_relative */
843 complain_overflow_dont
, /* complain_on_overflow */
844 ppc64_elf_ha_reloc
, /* special_function */
845 "R_PPC64_ADDR16_HIGHESTA", /* name */
846 FALSE
, /* partial_inplace */
848 0xffff, /* dst_mask */
849 FALSE
), /* pcrel_offset */
851 /* Like ADDR64, but may be unaligned. */
852 HOWTO (R_PPC64_UADDR64
, /* type */
854 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
856 FALSE
, /* pc_relative */
858 complain_overflow_dont
, /* complain_on_overflow */
859 bfd_elf_generic_reloc
, /* special_function */
860 "R_PPC64_UADDR64", /* name */
861 FALSE
, /* partial_inplace */
863 ONES (64), /* dst_mask */
864 FALSE
), /* pcrel_offset */
866 /* 64-bit relative relocation. */
867 HOWTO (R_PPC64_REL64
, /* type */
869 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
871 TRUE
, /* pc_relative */
873 complain_overflow_dont
, /* complain_on_overflow */
874 bfd_elf_generic_reloc
, /* special_function */
875 "R_PPC64_REL64", /* name */
876 FALSE
, /* partial_inplace */
878 ONES (64), /* dst_mask */
879 TRUE
), /* pcrel_offset */
881 /* 64-bit relocation to the symbol's procedure linkage table. */
882 HOWTO (R_PPC64_PLT64
, /* type */
884 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
886 FALSE
, /* pc_relative */
888 complain_overflow_dont
, /* complain_on_overflow */
889 ppc64_elf_unhandled_reloc
, /* special_function */
890 "R_PPC64_PLT64", /* name */
891 FALSE
, /* partial_inplace */
893 ONES (64), /* dst_mask */
894 FALSE
), /* pcrel_offset */
896 /* 64-bit PC relative relocation to the symbol's procedure linkage
898 /* FIXME: R_PPC64_PLTREL64 not supported. */
899 HOWTO (R_PPC64_PLTREL64
, /* type */
901 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
903 TRUE
, /* pc_relative */
905 complain_overflow_dont
, /* complain_on_overflow */
906 ppc64_elf_unhandled_reloc
, /* special_function */
907 "R_PPC64_PLTREL64", /* name */
908 FALSE
, /* partial_inplace */
910 ONES (64), /* dst_mask */
911 TRUE
), /* pcrel_offset */
913 /* 16 bit TOC-relative relocation. */
915 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
916 HOWTO (R_PPC64_TOC16
, /* type */
918 1, /* size (0 = byte, 1 = short, 2 = long) */
920 FALSE
, /* pc_relative */
922 complain_overflow_signed
, /* complain_on_overflow */
923 ppc64_elf_toc_reloc
, /* special_function */
924 "R_PPC64_TOC16", /* name */
925 FALSE
, /* partial_inplace */
927 0xffff, /* dst_mask */
928 FALSE
), /* pcrel_offset */
930 /* 16 bit TOC-relative relocation without overflow. */
932 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
933 HOWTO (R_PPC64_TOC16_LO
, /* type */
935 1, /* size (0 = byte, 1 = short, 2 = long) */
937 FALSE
, /* pc_relative */
939 complain_overflow_dont
, /* complain_on_overflow */
940 ppc64_elf_toc_reloc
, /* special_function */
941 "R_PPC64_TOC16_LO", /* name */
942 FALSE
, /* partial_inplace */
944 0xffff, /* dst_mask */
945 FALSE
), /* pcrel_offset */
947 /* 16 bit TOC-relative relocation, high 16 bits. */
949 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
950 HOWTO (R_PPC64_TOC16_HI
, /* type */
952 1, /* size (0 = byte, 1 = short, 2 = long) */
954 FALSE
, /* pc_relative */
956 complain_overflow_dont
, /* complain_on_overflow */
957 ppc64_elf_toc_reloc
, /* special_function */
958 "R_PPC64_TOC16_HI", /* name */
959 FALSE
, /* partial_inplace */
961 0xffff, /* dst_mask */
962 FALSE
), /* pcrel_offset */
964 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
965 contents of the low 16 bits, treated as a signed number, is
968 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
969 HOWTO (R_PPC64_TOC16_HA
, /* type */
971 1, /* size (0 = byte, 1 = short, 2 = long) */
973 FALSE
, /* pc_relative */
975 complain_overflow_dont
, /* complain_on_overflow */
976 ppc64_elf_toc_ha_reloc
, /* special_function */
977 "R_PPC64_TOC16_HA", /* name */
978 FALSE
, /* partial_inplace */
980 0xffff, /* dst_mask */
981 FALSE
), /* pcrel_offset */
983 /* 64-bit relocation; insert value of TOC base (.TOC.). */
985 /* R_PPC64_TOC 51 doubleword64 .TOC. */
986 HOWTO (R_PPC64_TOC
, /* type */
988 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
990 FALSE
, /* pc_relative */
992 complain_overflow_bitfield
, /* complain_on_overflow */
993 ppc64_elf_toc64_reloc
, /* special_function */
994 "R_PPC64_TOC", /* name */
995 FALSE
, /* partial_inplace */
997 ONES (64), /* dst_mask */
998 FALSE
), /* pcrel_offset */
1000 /* Like R_PPC64_GOT16, but also informs the link editor that the
1001 value to relocate may (!) refer to a PLT entry which the link
1002 editor (a) may replace with the symbol value. If the link editor
1003 is unable to fully resolve the symbol, it may (b) create a PLT
1004 entry and store the address to the new PLT entry in the GOT.
1005 This permits lazy resolution of function symbols at run time.
1006 The link editor may also skip all of this and just (c) emit a
1007 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1008 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1009 HOWTO (R_PPC64_PLTGOT16
, /* type */
1011 1, /* size (0 = byte, 1 = short, 2 = long) */
1013 FALSE
, /* pc_relative */
1015 complain_overflow_signed
, /* complain_on_overflow */
1016 ppc64_elf_unhandled_reloc
, /* special_function */
1017 "R_PPC64_PLTGOT16", /* name */
1018 FALSE
, /* partial_inplace */
1020 0xffff, /* dst_mask */
1021 FALSE
), /* pcrel_offset */
1023 /* Like R_PPC64_PLTGOT16, but without overflow. */
1024 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1025 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1027 1, /* size (0 = byte, 1 = short, 2 = long) */
1029 FALSE
, /* pc_relative */
1031 complain_overflow_dont
, /* complain_on_overflow */
1032 ppc64_elf_unhandled_reloc
, /* special_function */
1033 "R_PPC64_PLTGOT16_LO", /* name */
1034 FALSE
, /* partial_inplace */
1036 0xffff, /* dst_mask */
1037 FALSE
), /* pcrel_offset */
1039 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1040 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1041 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1042 16, /* rightshift */
1043 1, /* size (0 = byte, 1 = short, 2 = long) */
1045 FALSE
, /* pc_relative */
1047 complain_overflow_dont
, /* complain_on_overflow */
1048 ppc64_elf_unhandled_reloc
, /* special_function */
1049 "R_PPC64_PLTGOT16_HI", /* name */
1050 FALSE
, /* partial_inplace */
1052 0xffff, /* dst_mask */
1053 FALSE
), /* pcrel_offset */
1055 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1056 1 if the contents of the low 16 bits, treated as a signed number,
1058 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1059 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1060 16, /* rightshift */
1061 1, /* size (0 = byte, 1 = short, 2 = long) */
1063 FALSE
, /* pc_relative */
1065 complain_overflow_dont
,/* complain_on_overflow */
1066 ppc64_elf_unhandled_reloc
, /* special_function */
1067 "R_PPC64_PLTGOT16_HA", /* name */
1068 FALSE
, /* partial_inplace */
1070 0xffff, /* dst_mask */
1071 FALSE
), /* pcrel_offset */
1073 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1074 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1076 1, /* size (0 = byte, 1 = short, 2 = long) */
1078 FALSE
, /* pc_relative */
1080 complain_overflow_bitfield
, /* complain_on_overflow */
1081 bfd_elf_generic_reloc
, /* special_function */
1082 "R_PPC64_ADDR16_DS", /* name */
1083 FALSE
, /* partial_inplace */
1085 0xfffc, /* dst_mask */
1086 FALSE
), /* pcrel_offset */
1088 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1089 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1091 1, /* size (0 = byte, 1 = short, 2 = long) */
1093 FALSE
, /* pc_relative */
1095 complain_overflow_dont
,/* complain_on_overflow */
1096 bfd_elf_generic_reloc
, /* special_function */
1097 "R_PPC64_ADDR16_LO_DS",/* name */
1098 FALSE
, /* partial_inplace */
1100 0xfffc, /* dst_mask */
1101 FALSE
), /* pcrel_offset */
1103 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1104 HOWTO (R_PPC64_GOT16_DS
, /* type */
1106 1, /* size (0 = byte, 1 = short, 2 = long) */
1108 FALSE
, /* pc_relative */
1110 complain_overflow_signed
, /* complain_on_overflow */
1111 ppc64_elf_unhandled_reloc
, /* special_function */
1112 "R_PPC64_GOT16_DS", /* name */
1113 FALSE
, /* partial_inplace */
1115 0xfffc, /* dst_mask */
1116 FALSE
), /* pcrel_offset */
1118 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1119 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1121 1, /* size (0 = byte, 1 = short, 2 = long) */
1123 FALSE
, /* pc_relative */
1125 complain_overflow_dont
, /* complain_on_overflow */
1126 ppc64_elf_unhandled_reloc
, /* special_function */
1127 "R_PPC64_GOT16_LO_DS", /* name */
1128 FALSE
, /* partial_inplace */
1130 0xfffc, /* dst_mask */
1131 FALSE
), /* pcrel_offset */
1133 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1134 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1136 1, /* size (0 = byte, 1 = short, 2 = long) */
1138 FALSE
, /* pc_relative */
1140 complain_overflow_dont
, /* complain_on_overflow */
1141 ppc64_elf_unhandled_reloc
, /* special_function */
1142 "R_PPC64_PLT16_LO_DS", /* name */
1143 FALSE
, /* partial_inplace */
1145 0xfffc, /* dst_mask */
1146 FALSE
), /* pcrel_offset */
1148 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1149 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1151 1, /* size (0 = byte, 1 = short, 2 = long) */
1153 FALSE
, /* pc_relative */
1155 complain_overflow_bitfield
, /* complain_on_overflow */
1156 ppc64_elf_sectoff_reloc
, /* special_function */
1157 "R_PPC64_SECTOFF_DS", /* name */
1158 FALSE
, /* partial_inplace */
1160 0xfffc, /* dst_mask */
1161 FALSE
), /* pcrel_offset */
1163 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1164 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1166 1, /* size (0 = byte, 1 = short, 2 = long) */
1168 FALSE
, /* pc_relative */
1170 complain_overflow_dont
, /* complain_on_overflow */
1171 ppc64_elf_sectoff_reloc
, /* special_function */
1172 "R_PPC64_SECTOFF_LO_DS",/* name */
1173 FALSE
, /* partial_inplace */
1175 0xfffc, /* dst_mask */
1176 FALSE
), /* pcrel_offset */
1178 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1179 HOWTO (R_PPC64_TOC16_DS
, /* type */
1181 1, /* size (0 = byte, 1 = short, 2 = long) */
1183 FALSE
, /* pc_relative */
1185 complain_overflow_signed
, /* complain_on_overflow */
1186 ppc64_elf_toc_reloc
, /* special_function */
1187 "R_PPC64_TOC16_DS", /* name */
1188 FALSE
, /* partial_inplace */
1190 0xfffc, /* dst_mask */
1191 FALSE
), /* pcrel_offset */
1193 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1194 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1196 1, /* size (0 = byte, 1 = short, 2 = long) */
1198 FALSE
, /* pc_relative */
1200 complain_overflow_dont
, /* complain_on_overflow */
1201 ppc64_elf_toc_reloc
, /* special_function */
1202 "R_PPC64_TOC16_LO_DS", /* name */
1203 FALSE
, /* partial_inplace */
1205 0xfffc, /* dst_mask */
1206 FALSE
), /* pcrel_offset */
1208 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1209 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1210 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1212 1, /* size (0 = byte, 1 = short, 2 = long) */
1214 FALSE
, /* pc_relative */
1216 complain_overflow_signed
, /* complain_on_overflow */
1217 ppc64_elf_unhandled_reloc
, /* special_function */
1218 "R_PPC64_PLTGOT16_DS", /* name */
1219 FALSE
, /* partial_inplace */
1221 0xfffc, /* dst_mask */
1222 FALSE
), /* pcrel_offset */
1224 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1225 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1226 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1228 1, /* size (0 = byte, 1 = short, 2 = long) */
1230 FALSE
, /* pc_relative */
1232 complain_overflow_dont
, /* complain_on_overflow */
1233 ppc64_elf_unhandled_reloc
, /* special_function */
1234 "R_PPC64_PLTGOT16_LO_DS",/* name */
1235 FALSE
, /* partial_inplace */
1237 0xfffc, /* dst_mask */
1238 FALSE
), /* pcrel_offset */
1240 /* Marker relocs for TLS. */
1243 2, /* size (0 = byte, 1 = short, 2 = long) */
1245 FALSE
, /* pc_relative */
1247 complain_overflow_dont
, /* complain_on_overflow */
1248 bfd_elf_generic_reloc
, /* special_function */
1249 "R_PPC64_TLS", /* name */
1250 FALSE
, /* partial_inplace */
1253 FALSE
), /* pcrel_offset */
1255 HOWTO (R_PPC64_TLSGD
,
1257 2, /* size (0 = byte, 1 = short, 2 = long) */
1259 FALSE
, /* pc_relative */
1261 complain_overflow_dont
, /* complain_on_overflow */
1262 bfd_elf_generic_reloc
, /* special_function */
1263 "R_PPC64_TLSGD", /* name */
1264 FALSE
, /* partial_inplace */
1267 FALSE
), /* pcrel_offset */
1269 HOWTO (R_PPC64_TLSLD
,
1271 2, /* size (0 = byte, 1 = short, 2 = long) */
1273 FALSE
, /* pc_relative */
1275 complain_overflow_dont
, /* complain_on_overflow */
1276 bfd_elf_generic_reloc
, /* special_function */
1277 "R_PPC64_TLSLD", /* name */
1278 FALSE
, /* partial_inplace */
1281 FALSE
), /* pcrel_offset */
1283 /* Computes the load module index of the load module that contains the
1284 definition of its TLS sym. */
1285 HOWTO (R_PPC64_DTPMOD64
,
1287 4, /* size (0 = byte, 1 = short, 2 = long) */
1289 FALSE
, /* pc_relative */
1291 complain_overflow_dont
, /* complain_on_overflow */
1292 ppc64_elf_unhandled_reloc
, /* special_function */
1293 "R_PPC64_DTPMOD64", /* name */
1294 FALSE
, /* partial_inplace */
1296 ONES (64), /* dst_mask */
1297 FALSE
), /* pcrel_offset */
1299 /* Computes a dtv-relative displacement, the difference between the value
1300 of sym+add and the base address of the thread-local storage block that
1301 contains the definition of sym, minus 0x8000. */
1302 HOWTO (R_PPC64_DTPREL64
,
1304 4, /* size (0 = byte, 1 = short, 2 = long) */
1306 FALSE
, /* pc_relative */
1308 complain_overflow_dont
, /* complain_on_overflow */
1309 ppc64_elf_unhandled_reloc
, /* special_function */
1310 "R_PPC64_DTPREL64", /* name */
1311 FALSE
, /* partial_inplace */
1313 ONES (64), /* dst_mask */
1314 FALSE
), /* pcrel_offset */
1316 /* A 16 bit dtprel reloc. */
1317 HOWTO (R_PPC64_DTPREL16
,
1319 1, /* size (0 = byte, 1 = short, 2 = long) */
1321 FALSE
, /* pc_relative */
1323 complain_overflow_signed
, /* complain_on_overflow */
1324 ppc64_elf_unhandled_reloc
, /* special_function */
1325 "R_PPC64_DTPREL16", /* name */
1326 FALSE
, /* partial_inplace */
1328 0xffff, /* dst_mask */
1329 FALSE
), /* pcrel_offset */
1331 /* Like DTPREL16, but no overflow. */
1332 HOWTO (R_PPC64_DTPREL16_LO
,
1334 1, /* size (0 = byte, 1 = short, 2 = long) */
1336 FALSE
, /* pc_relative */
1338 complain_overflow_dont
, /* complain_on_overflow */
1339 ppc64_elf_unhandled_reloc
, /* special_function */
1340 "R_PPC64_DTPREL16_LO", /* name */
1341 FALSE
, /* partial_inplace */
1343 0xffff, /* dst_mask */
1344 FALSE
), /* pcrel_offset */
1346 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1347 HOWTO (R_PPC64_DTPREL16_HI
,
1348 16, /* rightshift */
1349 1, /* size (0 = byte, 1 = short, 2 = long) */
1351 FALSE
, /* pc_relative */
1353 complain_overflow_dont
, /* complain_on_overflow */
1354 ppc64_elf_unhandled_reloc
, /* special_function */
1355 "R_PPC64_DTPREL16_HI", /* name */
1356 FALSE
, /* partial_inplace */
1358 0xffff, /* dst_mask */
1359 FALSE
), /* pcrel_offset */
1361 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1362 HOWTO (R_PPC64_DTPREL16_HA
,
1363 16, /* rightshift */
1364 1, /* size (0 = byte, 1 = short, 2 = long) */
1366 FALSE
, /* pc_relative */
1368 complain_overflow_dont
, /* complain_on_overflow */
1369 ppc64_elf_unhandled_reloc
, /* special_function */
1370 "R_PPC64_DTPREL16_HA", /* name */
1371 FALSE
, /* partial_inplace */
1373 0xffff, /* dst_mask */
1374 FALSE
), /* pcrel_offset */
1376 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1377 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1378 32, /* rightshift */
1379 1, /* size (0 = byte, 1 = short, 2 = long) */
1381 FALSE
, /* pc_relative */
1383 complain_overflow_dont
, /* complain_on_overflow */
1384 ppc64_elf_unhandled_reloc
, /* special_function */
1385 "R_PPC64_DTPREL16_HIGHER", /* name */
1386 FALSE
, /* partial_inplace */
1388 0xffff, /* dst_mask */
1389 FALSE
), /* pcrel_offset */
1391 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1392 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1393 32, /* rightshift */
1394 1, /* size (0 = byte, 1 = short, 2 = long) */
1396 FALSE
, /* pc_relative */
1398 complain_overflow_dont
, /* complain_on_overflow */
1399 ppc64_elf_unhandled_reloc
, /* special_function */
1400 "R_PPC64_DTPREL16_HIGHERA", /* name */
1401 FALSE
, /* partial_inplace */
1403 0xffff, /* dst_mask */
1404 FALSE
), /* pcrel_offset */
1406 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1407 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1408 48, /* rightshift */
1409 1, /* size (0 = byte, 1 = short, 2 = long) */
1411 FALSE
, /* pc_relative */
1413 complain_overflow_dont
, /* complain_on_overflow */
1414 ppc64_elf_unhandled_reloc
, /* special_function */
1415 "R_PPC64_DTPREL16_HIGHEST", /* name */
1416 FALSE
, /* partial_inplace */
1418 0xffff, /* dst_mask */
1419 FALSE
), /* pcrel_offset */
1421 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1422 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1423 48, /* rightshift */
1424 1, /* size (0 = byte, 1 = short, 2 = long) */
1426 FALSE
, /* pc_relative */
1428 complain_overflow_dont
, /* complain_on_overflow */
1429 ppc64_elf_unhandled_reloc
, /* special_function */
1430 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1431 FALSE
, /* partial_inplace */
1433 0xffff, /* dst_mask */
1434 FALSE
), /* pcrel_offset */
1436 /* Like DTPREL16, but for insns with a DS field. */
1437 HOWTO (R_PPC64_DTPREL16_DS
,
1439 1, /* size (0 = byte, 1 = short, 2 = long) */
1441 FALSE
, /* pc_relative */
1443 complain_overflow_signed
, /* complain_on_overflow */
1444 ppc64_elf_unhandled_reloc
, /* special_function */
1445 "R_PPC64_DTPREL16_DS", /* name */
1446 FALSE
, /* partial_inplace */
1448 0xfffc, /* dst_mask */
1449 FALSE
), /* pcrel_offset */
1451 /* Like DTPREL16_DS, but no overflow. */
1452 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1454 1, /* size (0 = byte, 1 = short, 2 = long) */
1456 FALSE
, /* pc_relative */
1458 complain_overflow_dont
, /* complain_on_overflow */
1459 ppc64_elf_unhandled_reloc
, /* special_function */
1460 "R_PPC64_DTPREL16_LO_DS", /* name */
1461 FALSE
, /* partial_inplace */
1463 0xfffc, /* dst_mask */
1464 FALSE
), /* pcrel_offset */
1466 /* Computes a tp-relative displacement, the difference between the value of
1467 sym+add and the value of the thread pointer (r13). */
1468 HOWTO (R_PPC64_TPREL64
,
1470 4, /* size (0 = byte, 1 = short, 2 = long) */
1472 FALSE
, /* pc_relative */
1474 complain_overflow_dont
, /* complain_on_overflow */
1475 ppc64_elf_unhandled_reloc
, /* special_function */
1476 "R_PPC64_TPREL64", /* name */
1477 FALSE
, /* partial_inplace */
1479 ONES (64), /* dst_mask */
1480 FALSE
), /* pcrel_offset */
1482 /* A 16 bit tprel reloc. */
1483 HOWTO (R_PPC64_TPREL16
,
1485 1, /* size (0 = byte, 1 = short, 2 = long) */
1487 FALSE
, /* pc_relative */
1489 complain_overflow_signed
, /* complain_on_overflow */
1490 ppc64_elf_unhandled_reloc
, /* special_function */
1491 "R_PPC64_TPREL16", /* name */
1492 FALSE
, /* partial_inplace */
1494 0xffff, /* dst_mask */
1495 FALSE
), /* pcrel_offset */
1497 /* Like TPREL16, but no overflow. */
1498 HOWTO (R_PPC64_TPREL16_LO
,
1500 1, /* size (0 = byte, 1 = short, 2 = long) */
1502 FALSE
, /* pc_relative */
1504 complain_overflow_dont
, /* complain_on_overflow */
1505 ppc64_elf_unhandled_reloc
, /* special_function */
1506 "R_PPC64_TPREL16_LO", /* name */
1507 FALSE
, /* partial_inplace */
1509 0xffff, /* dst_mask */
1510 FALSE
), /* pcrel_offset */
1512 /* Like TPREL16_LO, but next higher group of 16 bits. */
1513 HOWTO (R_PPC64_TPREL16_HI
,
1514 16, /* rightshift */
1515 1, /* size (0 = byte, 1 = short, 2 = long) */
1517 FALSE
, /* pc_relative */
1519 complain_overflow_dont
, /* complain_on_overflow */
1520 ppc64_elf_unhandled_reloc
, /* special_function */
1521 "R_PPC64_TPREL16_HI", /* name */
1522 FALSE
, /* partial_inplace */
1524 0xffff, /* dst_mask */
1525 FALSE
), /* pcrel_offset */
1527 /* Like TPREL16_HI, but adjust for low 16 bits. */
1528 HOWTO (R_PPC64_TPREL16_HA
,
1529 16, /* rightshift */
1530 1, /* size (0 = byte, 1 = short, 2 = long) */
1532 FALSE
, /* pc_relative */
1534 complain_overflow_dont
, /* complain_on_overflow */
1535 ppc64_elf_unhandled_reloc
, /* special_function */
1536 "R_PPC64_TPREL16_HA", /* name */
1537 FALSE
, /* partial_inplace */
1539 0xffff, /* dst_mask */
1540 FALSE
), /* pcrel_offset */
1542 /* Like TPREL16_HI, but next higher group of 16 bits. */
1543 HOWTO (R_PPC64_TPREL16_HIGHER
,
1544 32, /* rightshift */
1545 1, /* size (0 = byte, 1 = short, 2 = long) */
1547 FALSE
, /* pc_relative */
1549 complain_overflow_dont
, /* complain_on_overflow */
1550 ppc64_elf_unhandled_reloc
, /* special_function */
1551 "R_PPC64_TPREL16_HIGHER", /* name */
1552 FALSE
, /* partial_inplace */
1554 0xffff, /* dst_mask */
1555 FALSE
), /* pcrel_offset */
1557 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1558 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1559 32, /* rightshift */
1560 1, /* size (0 = byte, 1 = short, 2 = long) */
1562 FALSE
, /* pc_relative */
1564 complain_overflow_dont
, /* complain_on_overflow */
1565 ppc64_elf_unhandled_reloc
, /* special_function */
1566 "R_PPC64_TPREL16_HIGHERA", /* name */
1567 FALSE
, /* partial_inplace */
1569 0xffff, /* dst_mask */
1570 FALSE
), /* pcrel_offset */
1572 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1573 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1574 48, /* rightshift */
1575 1, /* size (0 = byte, 1 = short, 2 = long) */
1577 FALSE
, /* pc_relative */
1579 complain_overflow_dont
, /* complain_on_overflow */
1580 ppc64_elf_unhandled_reloc
, /* special_function */
1581 "R_PPC64_TPREL16_HIGHEST", /* name */
1582 FALSE
, /* partial_inplace */
1584 0xffff, /* dst_mask */
1585 FALSE
), /* pcrel_offset */
1587 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1588 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1589 48, /* rightshift */
1590 1, /* size (0 = byte, 1 = short, 2 = long) */
1592 FALSE
, /* pc_relative */
1594 complain_overflow_dont
, /* complain_on_overflow */
1595 ppc64_elf_unhandled_reloc
, /* special_function */
1596 "R_PPC64_TPREL16_HIGHESTA", /* name */
1597 FALSE
, /* partial_inplace */
1599 0xffff, /* dst_mask */
1600 FALSE
), /* pcrel_offset */
1602 /* Like TPREL16, but for insns with a DS field. */
1603 HOWTO (R_PPC64_TPREL16_DS
,
1605 1, /* size (0 = byte, 1 = short, 2 = long) */
1607 FALSE
, /* pc_relative */
1609 complain_overflow_signed
, /* complain_on_overflow */
1610 ppc64_elf_unhandled_reloc
, /* special_function */
1611 "R_PPC64_TPREL16_DS", /* name */
1612 FALSE
, /* partial_inplace */
1614 0xfffc, /* dst_mask */
1615 FALSE
), /* pcrel_offset */
1617 /* Like TPREL16_DS, but no overflow. */
1618 HOWTO (R_PPC64_TPREL16_LO_DS
,
1620 1, /* size (0 = byte, 1 = short, 2 = long) */
1622 FALSE
, /* pc_relative */
1624 complain_overflow_dont
, /* complain_on_overflow */
1625 ppc64_elf_unhandled_reloc
, /* special_function */
1626 "R_PPC64_TPREL16_LO_DS", /* name */
1627 FALSE
, /* partial_inplace */
1629 0xfffc, /* dst_mask */
1630 FALSE
), /* pcrel_offset */
1632 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1633 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1634 to the first entry relative to the TOC base (r2). */
1635 HOWTO (R_PPC64_GOT_TLSGD16
,
1637 1, /* size (0 = byte, 1 = short, 2 = long) */
1639 FALSE
, /* pc_relative */
1641 complain_overflow_signed
, /* complain_on_overflow */
1642 ppc64_elf_unhandled_reloc
, /* special_function */
1643 "R_PPC64_GOT_TLSGD16", /* name */
1644 FALSE
, /* partial_inplace */
1646 0xffff, /* dst_mask */
1647 FALSE
), /* pcrel_offset */
1649 /* Like GOT_TLSGD16, but no overflow. */
1650 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1652 1, /* size (0 = byte, 1 = short, 2 = long) */
1654 FALSE
, /* pc_relative */
1656 complain_overflow_dont
, /* complain_on_overflow */
1657 ppc64_elf_unhandled_reloc
, /* special_function */
1658 "R_PPC64_GOT_TLSGD16_LO", /* name */
1659 FALSE
, /* partial_inplace */
1661 0xffff, /* dst_mask */
1662 FALSE
), /* pcrel_offset */
1664 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1665 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1666 16, /* rightshift */
1667 1, /* size (0 = byte, 1 = short, 2 = long) */
1669 FALSE
, /* pc_relative */
1671 complain_overflow_dont
, /* complain_on_overflow */
1672 ppc64_elf_unhandled_reloc
, /* special_function */
1673 "R_PPC64_GOT_TLSGD16_HI", /* name */
1674 FALSE
, /* partial_inplace */
1676 0xffff, /* dst_mask */
1677 FALSE
), /* pcrel_offset */
1679 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1680 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1681 16, /* rightshift */
1682 1, /* size (0 = byte, 1 = short, 2 = long) */
1684 FALSE
, /* pc_relative */
1686 complain_overflow_dont
, /* complain_on_overflow */
1687 ppc64_elf_unhandled_reloc
, /* special_function */
1688 "R_PPC64_GOT_TLSGD16_HA", /* name */
1689 FALSE
, /* partial_inplace */
1691 0xffff, /* dst_mask */
1692 FALSE
), /* pcrel_offset */
1694 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1695 with values (sym+add)@dtpmod and zero, and computes the offset to the
1696 first entry relative to the TOC base (r2). */
1697 HOWTO (R_PPC64_GOT_TLSLD16
,
1699 1, /* size (0 = byte, 1 = short, 2 = long) */
1701 FALSE
, /* pc_relative */
1703 complain_overflow_signed
, /* complain_on_overflow */
1704 ppc64_elf_unhandled_reloc
, /* special_function */
1705 "R_PPC64_GOT_TLSLD16", /* name */
1706 FALSE
, /* partial_inplace */
1708 0xffff, /* dst_mask */
1709 FALSE
), /* pcrel_offset */
1711 /* Like GOT_TLSLD16, but no overflow. */
1712 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1714 1, /* size (0 = byte, 1 = short, 2 = long) */
1716 FALSE
, /* pc_relative */
1718 complain_overflow_dont
, /* complain_on_overflow */
1719 ppc64_elf_unhandled_reloc
, /* special_function */
1720 "R_PPC64_GOT_TLSLD16_LO", /* name */
1721 FALSE
, /* partial_inplace */
1723 0xffff, /* dst_mask */
1724 FALSE
), /* pcrel_offset */
1726 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1727 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1728 16, /* rightshift */
1729 1, /* size (0 = byte, 1 = short, 2 = long) */
1731 FALSE
, /* pc_relative */
1733 complain_overflow_dont
, /* complain_on_overflow */
1734 ppc64_elf_unhandled_reloc
, /* special_function */
1735 "R_PPC64_GOT_TLSLD16_HI", /* name */
1736 FALSE
, /* partial_inplace */
1738 0xffff, /* dst_mask */
1739 FALSE
), /* pcrel_offset */
1741 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1742 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1743 16, /* rightshift */
1744 1, /* size (0 = byte, 1 = short, 2 = long) */
1746 FALSE
, /* pc_relative */
1748 complain_overflow_dont
, /* complain_on_overflow */
1749 ppc64_elf_unhandled_reloc
, /* special_function */
1750 "R_PPC64_GOT_TLSLD16_HA", /* name */
1751 FALSE
, /* partial_inplace */
1753 0xffff, /* dst_mask */
1754 FALSE
), /* pcrel_offset */
1756 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1757 the offset to the entry relative to the TOC base (r2). */
1758 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1760 1, /* size (0 = byte, 1 = short, 2 = long) */
1762 FALSE
, /* pc_relative */
1764 complain_overflow_signed
, /* complain_on_overflow */
1765 ppc64_elf_unhandled_reloc
, /* special_function */
1766 "R_PPC64_GOT_DTPREL16_DS", /* name */
1767 FALSE
, /* partial_inplace */
1769 0xfffc, /* dst_mask */
1770 FALSE
), /* pcrel_offset */
1772 /* Like GOT_DTPREL16_DS, but no overflow. */
1773 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1775 1, /* size (0 = byte, 1 = short, 2 = long) */
1777 FALSE
, /* pc_relative */
1779 complain_overflow_dont
, /* complain_on_overflow */
1780 ppc64_elf_unhandled_reloc
, /* special_function */
1781 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1782 FALSE
, /* partial_inplace */
1784 0xfffc, /* dst_mask */
1785 FALSE
), /* pcrel_offset */
1787 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1788 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1789 16, /* rightshift */
1790 1, /* size (0 = byte, 1 = short, 2 = long) */
1792 FALSE
, /* pc_relative */
1794 complain_overflow_dont
, /* complain_on_overflow */
1795 ppc64_elf_unhandled_reloc
, /* special_function */
1796 "R_PPC64_GOT_DTPREL16_HI", /* name */
1797 FALSE
, /* partial_inplace */
1799 0xffff, /* dst_mask */
1800 FALSE
), /* pcrel_offset */
1802 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1803 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1804 16, /* rightshift */
1805 1, /* size (0 = byte, 1 = short, 2 = long) */
1807 FALSE
, /* pc_relative */
1809 complain_overflow_dont
, /* complain_on_overflow */
1810 ppc64_elf_unhandled_reloc
, /* special_function */
1811 "R_PPC64_GOT_DTPREL16_HA", /* name */
1812 FALSE
, /* partial_inplace */
1814 0xffff, /* dst_mask */
1815 FALSE
), /* pcrel_offset */
1817 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1818 offset to the entry relative to the TOC base (r2). */
1819 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1821 1, /* size (0 = byte, 1 = short, 2 = long) */
1823 FALSE
, /* pc_relative */
1825 complain_overflow_signed
, /* complain_on_overflow */
1826 ppc64_elf_unhandled_reloc
, /* special_function */
1827 "R_PPC64_GOT_TPREL16_DS", /* name */
1828 FALSE
, /* partial_inplace */
1830 0xfffc, /* dst_mask */
1831 FALSE
), /* pcrel_offset */
1833 /* Like GOT_TPREL16_DS, but no overflow. */
1834 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1836 1, /* size (0 = byte, 1 = short, 2 = long) */
1838 FALSE
, /* pc_relative */
1840 complain_overflow_dont
, /* complain_on_overflow */
1841 ppc64_elf_unhandled_reloc
, /* special_function */
1842 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1843 FALSE
, /* partial_inplace */
1845 0xfffc, /* dst_mask */
1846 FALSE
), /* pcrel_offset */
1848 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1849 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1850 16, /* rightshift */
1851 1, /* size (0 = byte, 1 = short, 2 = long) */
1853 FALSE
, /* pc_relative */
1855 complain_overflow_dont
, /* complain_on_overflow */
1856 ppc64_elf_unhandled_reloc
, /* special_function */
1857 "R_PPC64_GOT_TPREL16_HI", /* name */
1858 FALSE
, /* partial_inplace */
1860 0xffff, /* dst_mask */
1861 FALSE
), /* pcrel_offset */
1863 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1864 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1865 16, /* rightshift */
1866 1, /* size (0 = byte, 1 = short, 2 = long) */
1868 FALSE
, /* pc_relative */
1870 complain_overflow_dont
, /* complain_on_overflow */
1871 ppc64_elf_unhandled_reloc
, /* special_function */
1872 "R_PPC64_GOT_TPREL16_HA", /* name */
1873 FALSE
, /* partial_inplace */
1875 0xffff, /* dst_mask */
1876 FALSE
), /* pcrel_offset */
1878 HOWTO (R_PPC64_JMP_IREL
, /* type */
1880 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1882 FALSE
, /* pc_relative */
1884 complain_overflow_dont
, /* complain_on_overflow */
1885 ppc64_elf_unhandled_reloc
, /* special_function */
1886 "R_PPC64_JMP_IREL", /* name */
1887 FALSE
, /* partial_inplace */
1890 FALSE
), /* pcrel_offset */
1892 HOWTO (R_PPC64_IRELATIVE
, /* type */
1894 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1896 FALSE
, /* pc_relative */
1898 complain_overflow_dont
, /* complain_on_overflow */
1899 bfd_elf_generic_reloc
, /* special_function */
1900 "R_PPC64_IRELATIVE", /* name */
1901 FALSE
, /* partial_inplace */
1903 ONES (64), /* dst_mask */
1904 FALSE
), /* pcrel_offset */
1906 /* A 16 bit relative relocation. */
1907 HOWTO (R_PPC64_REL16
, /* type */
1909 1, /* size (0 = byte, 1 = short, 2 = long) */
1911 TRUE
, /* pc_relative */
1913 complain_overflow_bitfield
, /* complain_on_overflow */
1914 bfd_elf_generic_reloc
, /* special_function */
1915 "R_PPC64_REL16", /* name */
1916 FALSE
, /* partial_inplace */
1918 0xffff, /* dst_mask */
1919 TRUE
), /* pcrel_offset */
1921 /* A 16 bit relative relocation without overflow. */
1922 HOWTO (R_PPC64_REL16_LO
, /* type */
1924 1, /* size (0 = byte, 1 = short, 2 = long) */
1926 TRUE
, /* pc_relative */
1928 complain_overflow_dont
,/* complain_on_overflow */
1929 bfd_elf_generic_reloc
, /* special_function */
1930 "R_PPC64_REL16_LO", /* name */
1931 FALSE
, /* partial_inplace */
1933 0xffff, /* dst_mask */
1934 TRUE
), /* pcrel_offset */
1936 /* The high order 16 bits of a relative address. */
1937 HOWTO (R_PPC64_REL16_HI
, /* type */
1938 16, /* rightshift */
1939 1, /* size (0 = byte, 1 = short, 2 = long) */
1941 TRUE
, /* pc_relative */
1943 complain_overflow_dont
, /* complain_on_overflow */
1944 bfd_elf_generic_reloc
, /* special_function */
1945 "R_PPC64_REL16_HI", /* name */
1946 FALSE
, /* partial_inplace */
1948 0xffff, /* dst_mask */
1949 TRUE
), /* pcrel_offset */
1951 /* The high order 16 bits of a relative address, plus 1 if the contents of
1952 the low 16 bits, treated as a signed number, is negative. */
1953 HOWTO (R_PPC64_REL16_HA
, /* type */
1954 16, /* rightshift */
1955 1, /* size (0 = byte, 1 = short, 2 = long) */
1957 TRUE
, /* pc_relative */
1959 complain_overflow_dont
, /* complain_on_overflow */
1960 ppc64_elf_ha_reloc
, /* special_function */
1961 "R_PPC64_REL16_HA", /* name */
1962 FALSE
, /* partial_inplace */
1964 0xffff, /* dst_mask */
1965 TRUE
), /* pcrel_offset */
1967 /* GNU extension to record C++ vtable hierarchy. */
1968 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1970 0, /* size (0 = byte, 1 = short, 2 = long) */
1972 FALSE
, /* pc_relative */
1974 complain_overflow_dont
, /* complain_on_overflow */
1975 NULL
, /* special_function */
1976 "R_PPC64_GNU_VTINHERIT", /* name */
1977 FALSE
, /* partial_inplace */
1980 FALSE
), /* pcrel_offset */
1982 /* GNU extension to record C++ vtable member usage. */
1983 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1985 0, /* size (0 = byte, 1 = short, 2 = long) */
1987 FALSE
, /* pc_relative */
1989 complain_overflow_dont
, /* complain_on_overflow */
1990 NULL
, /* special_function */
1991 "R_PPC64_GNU_VTENTRY", /* name */
1992 FALSE
, /* partial_inplace */
1995 FALSE
), /* pcrel_offset */
1999 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2003 ppc_howto_init (void)
2005 unsigned int i
, type
;
2008 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2011 type
= ppc64_elf_howto_raw
[i
].type
;
2012 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2013 / sizeof (ppc64_elf_howto_table
[0])));
2014 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2018 static reloc_howto_type
*
2019 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2020 bfd_reloc_code_real_type code
)
2022 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2024 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2025 /* Initialize howto table if needed. */
2033 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2035 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2037 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2039 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2041 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2043 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2045 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2047 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2049 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2051 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2053 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2055 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2057 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2059 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2061 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2063 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2065 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2067 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2069 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2071 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2073 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2075 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2077 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2079 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2081 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2083 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2085 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2087 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2089 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2091 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2093 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2095 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2097 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2099 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2101 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2103 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2105 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2107 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2109 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2111 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2113 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2115 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2117 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2119 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2121 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2123 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2125 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2127 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2129 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2131 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2133 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2135 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2137 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2139 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2141 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2143 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2145 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2147 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2149 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2151 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2153 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2155 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2157 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2159 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2161 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2163 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2165 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2167 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2169 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2171 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2173 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2175 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2177 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2179 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2181 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2183 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2185 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2187 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2189 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2191 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2193 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2195 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2197 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2199 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2201 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2203 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2205 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2207 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2209 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2211 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2213 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2215 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2217 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2219 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2221 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2223 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2225 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2227 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2229 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2231 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2233 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2235 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2237 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2239 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2241 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2243 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2245 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2249 return ppc64_elf_howto_table
[r
];
2252 static reloc_howto_type
*
2253 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2259 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2261 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2262 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2263 return &ppc64_elf_howto_raw
[i
];
2268 /* Set the howto pointer for a PowerPC ELF reloc. */
2271 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2272 Elf_Internal_Rela
*dst
)
2276 /* Initialize howto table if needed. */
2277 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2280 type
= ELF64_R_TYPE (dst
->r_info
);
2281 if (type
>= (sizeof (ppc64_elf_howto_table
)
2282 / sizeof (ppc64_elf_howto_table
[0])))
2284 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2286 type
= R_PPC64_NONE
;
2288 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2291 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2293 static bfd_reloc_status_type
2294 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2295 void *data
, asection
*input_section
,
2296 bfd
*output_bfd
, char **error_message
)
2298 /* If this is a relocatable link (output_bfd test tells us), just
2299 call the generic function. Any adjustment will be done at final
2301 if (output_bfd
!= NULL
)
2302 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2303 input_section
, output_bfd
, error_message
);
2305 /* Adjust the addend for sign extension of the low 16 bits.
2306 We won't actually be using the low 16 bits, so trashing them
2308 reloc_entry
->addend
+= 0x8000;
2309 return bfd_reloc_continue
;
2312 static bfd_reloc_status_type
2313 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2314 void *data
, asection
*input_section
,
2315 bfd
*output_bfd
, char **error_message
)
2317 if (output_bfd
!= NULL
)
2318 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2319 input_section
, output_bfd
, error_message
);
2321 if (strcmp (symbol
->section
->name
, ".opd") == 0
2322 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2324 bfd_vma dest
= opd_entry_value (symbol
->section
,
2325 symbol
->value
+ reloc_entry
->addend
,
2327 if (dest
!= (bfd_vma
) -1)
2328 reloc_entry
->addend
= dest
- (symbol
->value
2329 + symbol
->section
->output_section
->vma
2330 + symbol
->section
->output_offset
);
2332 return bfd_reloc_continue
;
2335 static bfd_reloc_status_type
2336 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2337 void *data
, asection
*input_section
,
2338 bfd
*output_bfd
, char **error_message
)
2341 enum elf_ppc64_reloc_type r_type
;
2342 bfd_size_type octets
;
2343 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2344 bfd_boolean is_power4
= FALSE
;
2346 /* If this is a relocatable link (output_bfd test tells us), just
2347 call the generic function. Any adjustment will be done at final
2349 if (output_bfd
!= NULL
)
2350 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2351 input_section
, output_bfd
, error_message
);
2353 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2354 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2355 insn
&= ~(0x01 << 21);
2356 r_type
= reloc_entry
->howto
->type
;
2357 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2358 || r_type
== R_PPC64_REL14_BRTAKEN
)
2359 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2363 /* Set 'a' bit. This is 0b00010 in BO field for branch
2364 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2365 for branch on CTR insns (BO == 1a00t or 1a01t). */
2366 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2368 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2378 if (!bfd_is_com_section (symbol
->section
))
2379 target
= symbol
->value
;
2380 target
+= symbol
->section
->output_section
->vma
;
2381 target
+= symbol
->section
->output_offset
;
2382 target
+= reloc_entry
->addend
;
2384 from
= (reloc_entry
->address
2385 + input_section
->output_offset
2386 + input_section
->output_section
->vma
);
2388 /* Invert 'y' bit if not the default. */
2389 if ((bfd_signed_vma
) (target
- from
) < 0)
2392 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2394 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2395 input_section
, output_bfd
, error_message
);
2398 static bfd_reloc_status_type
2399 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2400 void *data
, asection
*input_section
,
2401 bfd
*output_bfd
, char **error_message
)
2403 /* If this is a relocatable link (output_bfd test tells us), just
2404 call the generic function. Any adjustment will be done at final
2406 if (output_bfd
!= NULL
)
2407 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2408 input_section
, output_bfd
, error_message
);
2410 /* Subtract the symbol section base address. */
2411 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2412 return bfd_reloc_continue
;
2415 static bfd_reloc_status_type
2416 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2417 void *data
, asection
*input_section
,
2418 bfd
*output_bfd
, char **error_message
)
2420 /* If this is a relocatable link (output_bfd test tells us), just
2421 call the generic function. Any adjustment will be done at final
2423 if (output_bfd
!= NULL
)
2424 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2425 input_section
, output_bfd
, error_message
);
2427 /* Subtract the symbol section base address. */
2428 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2430 /* Adjust the addend for sign extension of the low 16 bits. */
2431 reloc_entry
->addend
+= 0x8000;
2432 return bfd_reloc_continue
;
2435 static bfd_reloc_status_type
2436 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2437 void *data
, asection
*input_section
,
2438 bfd
*output_bfd
, char **error_message
)
2442 /* If this is a relocatable link (output_bfd test tells us), just
2443 call the generic function. Any adjustment will be done at final
2445 if (output_bfd
!= NULL
)
2446 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2447 input_section
, output_bfd
, error_message
);
2449 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2451 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2453 /* Subtract the TOC base address. */
2454 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2455 return bfd_reloc_continue
;
2458 static bfd_reloc_status_type
2459 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2460 void *data
, asection
*input_section
,
2461 bfd
*output_bfd
, char **error_message
)
2465 /* If this is a relocatable link (output_bfd test tells us), just
2466 call the generic function. Any adjustment will be done at final
2468 if (output_bfd
!= NULL
)
2469 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2470 input_section
, output_bfd
, error_message
);
2472 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2474 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2476 /* Subtract the TOC base address. */
2477 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2479 /* Adjust the addend for sign extension of the low 16 bits. */
2480 reloc_entry
->addend
+= 0x8000;
2481 return bfd_reloc_continue
;
2484 static bfd_reloc_status_type
2485 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2486 void *data
, asection
*input_section
,
2487 bfd
*output_bfd
, char **error_message
)
2490 bfd_size_type octets
;
2492 /* If this is a relocatable link (output_bfd test tells us), just
2493 call the generic function. Any adjustment will be done at final
2495 if (output_bfd
!= NULL
)
2496 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2497 input_section
, output_bfd
, error_message
);
2499 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2501 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2503 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2504 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2505 return bfd_reloc_ok
;
2508 static bfd_reloc_status_type
2509 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2510 void *data
, asection
*input_section
,
2511 bfd
*output_bfd
, char **error_message
)
2513 /* If this is a relocatable link (output_bfd test tells us), just
2514 call the generic function. Any adjustment will be done at final
2516 if (output_bfd
!= NULL
)
2517 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2518 input_section
, output_bfd
, error_message
);
2520 if (error_message
!= NULL
)
2522 static char buf
[60];
2523 sprintf (buf
, "generic linker can't handle %s",
2524 reloc_entry
->howto
->name
);
2525 *error_message
= buf
;
2527 return bfd_reloc_dangerous
;
2530 /* Track GOT entries needed for a given symbol. We might need more
2531 than one got entry per symbol. */
2534 struct got_entry
*next
;
2536 /* The symbol addend that we'll be placing in the GOT. */
2539 /* Unlike other ELF targets, we use separate GOT entries for the same
2540 symbol referenced from different input files. This is to support
2541 automatic multiple TOC/GOT sections, where the TOC base can vary
2542 from one input file to another. After partitioning into TOC groups
2543 we merge entries within the group.
2545 Point to the BFD owning this GOT entry. */
2548 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2549 TLS_TPREL or TLS_DTPREL for tls entries. */
2550 unsigned char tls_type
;
2552 /* Non-zero if got.ent points to real entry. */
2553 unsigned char is_indirect
;
2555 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2558 bfd_signed_vma refcount
;
2560 struct got_entry
*ent
;
2564 /* The same for PLT. */
2567 struct plt_entry
*next
;
2573 bfd_signed_vma refcount
;
2578 struct ppc64_elf_obj_tdata
2580 struct elf_obj_tdata elf
;
2582 /* Shortcuts to dynamic linker sections. */
2586 /* Used during garbage collection. We attach global symbols defined
2587 on removed .opd entries to this section so that the sym is removed. */
2588 asection
*deleted_section
;
2590 /* TLS local dynamic got entry handling. Support for multiple GOT
2591 sections means we potentially need one of these for each input bfd. */
2592 struct got_entry tlsld_got
;
2594 /* A copy of relocs before they are modified for --emit-relocs. */
2595 Elf_Internal_Rela
*opd_relocs
;
2597 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2598 the reloc to be in the range -32768 to 32767. */
2599 unsigned int has_small_toc_reloc
;
2602 #define ppc64_elf_tdata(bfd) \
2603 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2605 #define ppc64_tlsld_got(bfd) \
2606 (&ppc64_elf_tdata (bfd)->tlsld_got)
2608 #define is_ppc64_elf(bfd) \
2609 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2610 && elf_object_id (bfd) == PPC64_ELF_DATA)
2612 /* Override the generic function because we store some extras. */
2615 ppc64_elf_mkobject (bfd
*abfd
)
2617 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2621 /* Fix bad default arch selected for a 64 bit input bfd when the
2622 default is 32 bit. */
2625 ppc64_elf_object_p (bfd
*abfd
)
2627 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2629 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2631 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2633 /* Relies on arch after 32 bit default being 64 bit default. */
2634 abfd
->arch_info
= abfd
->arch_info
->next
;
2635 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2641 /* Support for core dump NOTE sections. */
2644 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2646 size_t offset
, size
;
2648 if (note
->descsz
!= 504)
2652 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2655 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2661 /* Make a ".reg/999" section. */
2662 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2663 size
, note
->descpos
+ offset
);
2667 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2669 if (note
->descsz
!= 136)
2672 elf_tdata (abfd
)->core_program
2673 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2674 elf_tdata (abfd
)->core_command
2675 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2681 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2694 va_start (ap
, note_type
);
2695 memset (data
, 0, 40);
2696 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2697 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2699 return elfcore_write_note (abfd
, buf
, bufsiz
,
2700 "CORE", note_type
, data
, sizeof (data
));
2711 va_start (ap
, note_type
);
2712 memset (data
, 0, 112);
2713 pid
= va_arg (ap
, long);
2714 bfd_put_32 (abfd
, pid
, data
+ 32);
2715 cursig
= va_arg (ap
, int);
2716 bfd_put_16 (abfd
, cursig
, data
+ 12);
2717 greg
= va_arg (ap
, const void *);
2718 memcpy (data
+ 112, greg
, 384);
2719 memset (data
+ 496, 0, 8);
2721 return elfcore_write_note (abfd
, buf
, bufsiz
,
2722 "CORE", note_type
, data
, sizeof (data
));
2727 /* Merge backend specific data from an object file to the output
2728 object file when linking. */
2731 ppc64_elf_merge_private_bfd_data (bfd
*ibfd
, bfd
*obfd
)
2733 /* Check if we have the same endianess. */
2734 if (ibfd
->xvec
->byteorder
!= obfd
->xvec
->byteorder
2735 && ibfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
2736 && obfd
->xvec
->byteorder
!= BFD_ENDIAN_UNKNOWN
)
2740 if (bfd_big_endian (ibfd
))
2741 msg
= _("%B: compiled for a big endian system "
2742 "and target is little endian");
2744 msg
= _("%B: compiled for a little endian system "
2745 "and target is big endian");
2747 (*_bfd_error_handler
) (msg
, ibfd
);
2749 bfd_set_error (bfd_error_wrong_format
);
2756 /* Add extra PPC sections. */
2758 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2760 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2761 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2762 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2763 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2764 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2765 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2766 { NULL
, 0, 0, 0, 0 }
2769 enum _ppc64_sec_type
{
2775 struct _ppc64_elf_section_data
2777 struct bfd_elf_section_data elf
;
2781 /* An array with one entry for each opd function descriptor. */
2782 struct _opd_sec_data
2784 /* Points to the function code section for local opd entries. */
2785 asection
**func_sec
;
2787 /* After editing .opd, adjust references to opd local syms. */
2791 /* An array for toc sections, indexed by offset/8. */
2792 struct _toc_sec_data
2794 /* Specifies the relocation symbol index used at a given toc offset. */
2797 /* And the relocation addend. */
2802 enum _ppc64_sec_type sec_type
:2;
2804 /* Flag set when small branches are detected. Used to
2805 select suitable defaults for the stub group size. */
2806 unsigned int has_14bit_branch
:1;
2809 #define ppc64_elf_section_data(sec) \
2810 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2813 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2815 if (!sec
->used_by_bfd
)
2817 struct _ppc64_elf_section_data
*sdata
;
2818 bfd_size_type amt
= sizeof (*sdata
);
2820 sdata
= bfd_zalloc (abfd
, amt
);
2823 sec
->used_by_bfd
= sdata
;
2826 return _bfd_elf_new_section_hook (abfd
, sec
);
2829 static struct _opd_sec_data
*
2830 get_opd_info (asection
* sec
)
2833 && ppc64_elf_section_data (sec
) != NULL
2834 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2835 return &ppc64_elf_section_data (sec
)->u
.opd
;
2839 /* Parameters for the qsort hook. */
2840 static bfd_boolean synthetic_relocatable
;
2842 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2845 compare_symbols (const void *ap
, const void *bp
)
2847 const asymbol
*a
= * (const asymbol
**) ap
;
2848 const asymbol
*b
= * (const asymbol
**) bp
;
2850 /* Section symbols first. */
2851 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2853 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2856 /* then .opd symbols. */
2857 if (strcmp (a
->section
->name
, ".opd") == 0
2858 && strcmp (b
->section
->name
, ".opd") != 0)
2860 if (strcmp (a
->section
->name
, ".opd") != 0
2861 && strcmp (b
->section
->name
, ".opd") == 0)
2864 /* then other code symbols. */
2865 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2866 == (SEC_CODE
| SEC_ALLOC
)
2867 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2868 != (SEC_CODE
| SEC_ALLOC
))
2871 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2872 != (SEC_CODE
| SEC_ALLOC
)
2873 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2874 == (SEC_CODE
| SEC_ALLOC
))
2877 if (synthetic_relocatable
)
2879 if (a
->section
->id
< b
->section
->id
)
2882 if (a
->section
->id
> b
->section
->id
)
2886 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2889 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2892 /* For syms with the same value, prefer strong dynamic global function
2893 syms over other syms. */
2894 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2897 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2900 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2903 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2906 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2909 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2912 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2915 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2921 /* Search SYMS for a symbol of the given VALUE. */
2924 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2932 mid
= (lo
+ hi
) >> 1;
2933 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2935 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2945 mid
= (lo
+ hi
) >> 1;
2946 if (syms
[mid
]->section
->id
< id
)
2948 else if (syms
[mid
]->section
->id
> id
)
2950 else if (syms
[mid
]->value
< value
)
2952 else if (syms
[mid
]->value
> value
)
2962 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2964 bfd_vma vma
= *(bfd_vma
*) ptr
;
2965 return ((section
->flags
& SEC_ALLOC
) != 0
2966 && section
->vma
<= vma
2967 && vma
< section
->vma
+ section
->size
);
2970 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2971 entry syms. Also generate @plt symbols for the glink branch table. */
2974 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2975 long static_count
, asymbol
**static_syms
,
2976 long dyn_count
, asymbol
**dyn_syms
,
2983 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2985 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2990 opd
= bfd_get_section_by_name (abfd
, ".opd");
2994 symcount
= static_count
;
2996 symcount
+= dyn_count
;
3000 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
3004 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
3006 /* Use both symbol tables. */
3007 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
3008 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
3010 else if (!relocatable
&& static_count
== 0)
3011 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
3013 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
3015 synthetic_relocatable
= relocatable
;
3016 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
3018 if (!relocatable
&& symcount
> 1)
3021 /* Trim duplicate syms, since we may have merged the normal and
3022 dynamic symbols. Actually, we only care about syms that have
3023 different values, so trim any with the same value. */
3024 for (i
= 1, j
= 1; i
< symcount
; ++i
)
3025 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3026 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3027 syms
[j
++] = syms
[i
];
3032 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3036 for (; i
< symcount
; ++i
)
3037 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3038 != (SEC_CODE
| SEC_ALLOC
))
3039 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3043 for (; i
< symcount
; ++i
)
3044 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3048 for (; i
< symcount
; ++i
)
3049 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3053 for (; i
< symcount
; ++i
)
3054 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3055 != (SEC_CODE
| SEC_ALLOC
))
3063 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3068 if (opdsymend
== secsymend
)
3071 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3072 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3076 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3083 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3087 while (r
< opd
->relocation
+ relcount
3088 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3091 if (r
== opd
->relocation
+ relcount
)
3094 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3097 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3100 sym
= *r
->sym_ptr_ptr
;
3101 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3102 sym
->section
->id
, sym
->value
+ r
->addend
))
3105 size
+= sizeof (asymbol
);
3106 size
+= strlen (syms
[i
]->name
) + 2;
3110 s
= *ret
= bfd_malloc (size
);
3117 names
= (char *) (s
+ count
);
3119 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3123 while (r
< opd
->relocation
+ relcount
3124 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3127 if (r
== opd
->relocation
+ relcount
)
3130 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3133 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3136 sym
= *r
->sym_ptr_ptr
;
3137 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3138 sym
->section
->id
, sym
->value
+ r
->addend
))
3143 s
->flags
|= BSF_SYNTHETIC
;
3144 s
->section
= sym
->section
;
3145 s
->value
= sym
->value
+ r
->addend
;
3148 len
= strlen (syms
[i
]->name
);
3149 memcpy (names
, syms
[i
]->name
, len
+ 1);
3151 /* Have udata.p point back to the original symbol this
3152 synthetic symbol was derived from. */
3153 s
->udata
.p
= syms
[i
];
3160 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3164 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3165 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3168 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3172 free_contents_and_exit
:
3180 for (i
= secsymend
; i
< opdsymend
; ++i
)
3184 /* Ignore bogus symbols. */
3185 if (syms
[i
]->value
> opd
->size
- 8)
3188 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3189 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3192 size
+= sizeof (asymbol
);
3193 size
+= strlen (syms
[i
]->name
) + 2;
3197 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3199 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3201 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3203 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3205 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3206 goto free_contents_and_exit
;
3208 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3209 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3212 extdynend
= extdyn
+ dynamic
->size
;
3213 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3215 Elf_Internal_Dyn dyn
;
3216 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3218 if (dyn
.d_tag
== DT_NULL
)
3221 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3223 /* The first glink stub starts at offset 32; see comment in
3224 ppc64_elf_finish_dynamic_sections. */
3225 glink_vma
= dyn
.d_un
.d_val
+ 32;
3226 /* The .glink section usually does not survive the final
3227 link; search for the section (usually .text) where the
3228 glink stubs now reside. */
3229 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3240 /* Determine __glink trampoline by reading the relative branch
3241 from the first glink stub. */
3243 if (bfd_get_section_contents (abfd
, glink
, buf
,
3244 glink_vma
+ 4 - glink
->vma
, 4))
3246 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3248 if ((insn
& ~0x3fffffc) == 0)
3249 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3253 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3255 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3258 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3259 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3260 goto free_contents_and_exit
;
3262 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3263 size
+= plt_count
* sizeof (asymbol
);
3265 p
= relplt
->relocation
;
3266 for (i
= 0; i
< plt_count
; i
++, p
++)
3268 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3270 size
+= sizeof ("+0x") - 1 + 16;
3275 s
= *ret
= bfd_malloc (size
);
3277 goto free_contents_and_exit
;
3279 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3281 for (i
= secsymend
; i
< opdsymend
; ++i
)
3285 if (syms
[i
]->value
> opd
->size
- 8)
3288 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3289 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3293 asection
*sec
= abfd
->sections
;
3300 long mid
= (lo
+ hi
) >> 1;
3301 if (syms
[mid
]->section
->vma
< ent
)
3303 else if (syms
[mid
]->section
->vma
> ent
)
3307 sec
= syms
[mid
]->section
;
3312 if (lo
>= hi
&& lo
> codesecsym
)
3313 sec
= syms
[lo
- 1]->section
;
3315 for (; sec
!= NULL
; sec
= sec
->next
)
3319 if ((sec
->flags
& SEC_ALLOC
) == 0
3320 || (sec
->flags
& SEC_LOAD
) == 0)
3322 if ((sec
->flags
& SEC_CODE
) != 0)
3325 s
->flags
|= BSF_SYNTHETIC
;
3326 s
->value
= ent
- s
->section
->vma
;
3329 len
= strlen (syms
[i
]->name
);
3330 memcpy (names
, syms
[i
]->name
, len
+ 1);
3332 /* Have udata.p point back to the original symbol this
3333 synthetic symbol was derived from. */
3334 s
->udata
.p
= syms
[i
];
3340 if (glink
!= NULL
&& relplt
!= NULL
)
3344 /* Add a symbol for the main glink trampoline. */
3345 memset (s
, 0, sizeof *s
);
3347 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3349 s
->value
= resolv_vma
- glink
->vma
;
3351 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3352 names
+= sizeof ("__glink_PLTresolve");
3357 /* FIXME: It would be very much nicer to put sym@plt on the
3358 stub rather than on the glink branch table entry. The
3359 objdump disassembler would then use a sensible symbol
3360 name on plt calls. The difficulty in doing so is
3361 a) finding the stubs, and,
3362 b) matching stubs against plt entries, and,
3363 c) there can be multiple stubs for a given plt entry.
3365 Solving (a) could be done by code scanning, but older
3366 ppc64 binaries used different stubs to current code.
3367 (b) is the tricky one since you need to known the toc
3368 pointer for at least one function that uses a pic stub to
3369 be able to calculate the plt address referenced.
3370 (c) means gdb would need to set multiple breakpoints (or
3371 find the glink branch itself) when setting breakpoints
3372 for pending shared library loads. */
3373 p
= relplt
->relocation
;
3374 for (i
= 0; i
< plt_count
; i
++, p
++)
3378 *s
= **p
->sym_ptr_ptr
;
3379 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3380 we are defining a symbol, ensure one of them is set. */
3381 if ((s
->flags
& BSF_LOCAL
) == 0)
3382 s
->flags
|= BSF_GLOBAL
;
3383 s
->flags
|= BSF_SYNTHETIC
;
3385 s
->value
= glink_vma
- glink
->vma
;
3388 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3389 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3393 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3394 names
+= sizeof ("+0x") - 1;
3395 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3396 names
+= strlen (names
);
3398 memcpy (names
, "@plt", sizeof ("@plt"));
3399 names
+= sizeof ("@plt");
3414 /* The following functions are specific to the ELF linker, while
3415 functions above are used generally. Those named ppc64_elf_* are
3416 called by the main ELF linker code. They appear in this file more
3417 or less in the order in which they are called. eg.
3418 ppc64_elf_check_relocs is called early in the link process,
3419 ppc64_elf_finish_dynamic_sections is one of the last functions
3422 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3423 functions have both a function code symbol and a function descriptor
3424 symbol. A call to foo in a relocatable object file looks like:
3431 The function definition in another object file might be:
3435 . .quad .TOC.@tocbase
3441 When the linker resolves the call during a static link, the branch
3442 unsurprisingly just goes to .foo and the .opd information is unused.
3443 If the function definition is in a shared library, things are a little
3444 different: The call goes via a plt call stub, the opd information gets
3445 copied to the plt, and the linker patches the nop.
3453 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3454 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3455 . std 2,40(1) # this is the general idea
3463 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3465 The "reloc ()" notation is supposed to indicate that the linker emits
3466 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3469 What are the difficulties here? Well, firstly, the relocations
3470 examined by the linker in check_relocs are against the function code
3471 sym .foo, while the dynamic relocation in the plt is emitted against
3472 the function descriptor symbol, foo. Somewhere along the line, we need
3473 to carefully copy dynamic link information from one symbol to the other.
3474 Secondly, the generic part of the elf linker will make .foo a dynamic
3475 symbol as is normal for most other backends. We need foo dynamic
3476 instead, at least for an application final link. However, when
3477 creating a shared library containing foo, we need to have both symbols
3478 dynamic so that references to .foo are satisfied during the early
3479 stages of linking. Otherwise the linker might decide to pull in a
3480 definition from some other object, eg. a static library.
3482 Update: As of August 2004, we support a new convention. Function
3483 calls may use the function descriptor symbol, ie. "bl foo". This
3484 behaves exactly as "bl .foo". */
3486 /* The linker needs to keep track of the number of relocs that it
3487 decides to copy as dynamic relocs in check_relocs for each symbol.
3488 This is so that it can later discard them if they are found to be
3489 unnecessary. We store the information in a field extending the
3490 regular ELF linker hash table. */
3492 struct ppc_dyn_relocs
3494 struct ppc_dyn_relocs
*next
;
3496 /* The input section of the reloc. */
3499 /* Total number of relocs copied for the input section. */
3500 bfd_size_type count
;
3502 /* Number of pc-relative relocs copied for the input section. */
3503 bfd_size_type pc_count
;
3506 /* Of those relocs that might be copied as dynamic relocs, this function
3507 selects those that must be copied when linking a shared library,
3508 even when the symbol is local. */
3511 must_be_dyn_reloc (struct bfd_link_info
*info
,
3512 enum elf_ppc64_reloc_type r_type
)
3524 case R_PPC64_TPREL16
:
3525 case R_PPC64_TPREL16_LO
:
3526 case R_PPC64_TPREL16_HI
:
3527 case R_PPC64_TPREL16_HA
:
3528 case R_PPC64_TPREL16_DS
:
3529 case R_PPC64_TPREL16_LO_DS
:
3530 case R_PPC64_TPREL16_HIGHER
:
3531 case R_PPC64_TPREL16_HIGHERA
:
3532 case R_PPC64_TPREL16_HIGHEST
:
3533 case R_PPC64_TPREL16_HIGHESTA
:
3534 case R_PPC64_TPREL64
:
3535 return !info
->executable
;
3539 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3540 copying dynamic variables from a shared lib into an app's dynbss
3541 section, and instead use a dynamic relocation to point into the
3542 shared lib. With code that gcc generates, it's vital that this be
3543 enabled; In the PowerPC64 ABI, the address of a function is actually
3544 the address of a function descriptor, which resides in the .opd
3545 section. gcc uses the descriptor directly rather than going via the
3546 GOT as some other ABI's do, which means that initialized function
3547 pointers must reference the descriptor. Thus, a function pointer
3548 initialized to the address of a function in a shared library will
3549 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3550 redefines the function descriptor symbol to point to the copy. This
3551 presents a problem as a plt entry for that function is also
3552 initialized from the function descriptor symbol and the copy reloc
3553 may not be initialized first. */
3554 #define ELIMINATE_COPY_RELOCS 1
3556 /* Section name for stubs is the associated section name plus this
3558 #define STUB_SUFFIX ".stub"
3561 ppc_stub_long_branch:
3562 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3563 destination, but a 24 bit branch in a stub section will reach.
3566 ppc_stub_plt_branch:
3567 Similar to the above, but a 24 bit branch in the stub section won't
3568 reach its destination.
3569 . addis %r12,%r2,xxx@toc@ha
3570 . ld %r11,xxx@toc@l(%r12)
3575 Used to call a function in a shared library. If it so happens that
3576 the plt entry referenced crosses a 64k boundary, then an extra
3577 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3578 . addis %r12,%r2,xxx@toc@ha
3580 . ld %r11,xxx+0@toc@l(%r12)
3582 . ld %r2,xxx+8@toc@l(%r12)
3583 . ld %r11,xxx+16@toc@l(%r12)
3586 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3587 code to adjust the value and save r2 to support multiple toc sections.
3588 A ppc_stub_long_branch with an r2 offset looks like:
3590 . addis %r2,%r2,off@ha
3591 . addi %r2,%r2,off@l
3594 A ppc_stub_plt_branch with an r2 offset looks like:
3596 . addis %r12,%r2,xxx@toc@ha
3597 . ld %r11,xxx@toc@l(%r12)
3598 . addis %r2,%r2,off@ha
3599 . addi %r2,%r2,off@l
3603 In cases where the "addis" instruction would add zero, the "addis" is
3604 omitted and following instructions modified slightly in some cases.
3607 enum ppc_stub_type
{
3609 ppc_stub_long_branch
,
3610 ppc_stub_long_branch_r2off
,
3611 ppc_stub_plt_branch
,
3612 ppc_stub_plt_branch_r2off
,
3616 struct ppc_stub_hash_entry
{
3618 /* Base hash table entry structure. */
3619 struct bfd_hash_entry root
;
3621 enum ppc_stub_type stub_type
;
3623 /* The stub section. */
3626 /* Offset within stub_sec of the beginning of this stub. */
3627 bfd_vma stub_offset
;
3629 /* Given the symbol's value and its section we can determine its final
3630 value when building the stubs (so the stub knows where to jump. */
3631 bfd_vma target_value
;
3632 asection
*target_section
;
3634 /* The symbol table entry, if any, that this was derived from. */
3635 struct ppc_link_hash_entry
*h
;
3636 struct plt_entry
*plt_ent
;
3638 /* And the reloc addend that this was derived from. */
3641 /* Where this stub is being called from, or, in the case of combined
3642 stub sections, the first input section in the group. */
3646 struct ppc_branch_hash_entry
{
3648 /* Base hash table entry structure. */
3649 struct bfd_hash_entry root
;
3651 /* Offset within branch lookup table. */
3652 unsigned int offset
;
3654 /* Generation marker. */
3658 struct ppc_link_hash_entry
3660 struct elf_link_hash_entry elf
;
3663 /* A pointer to the most recently used stub hash entry against this
3665 struct ppc_stub_hash_entry
*stub_cache
;
3667 /* A pointer to the next symbol starting with a '.' */
3668 struct ppc_link_hash_entry
*next_dot_sym
;
3671 /* Track dynamic relocs copied for this symbol. */
3672 struct ppc_dyn_relocs
*dyn_relocs
;
3674 /* Link between function code and descriptor symbols. */
3675 struct ppc_link_hash_entry
*oh
;
3677 /* Flag function code and descriptor symbols. */
3678 unsigned int is_func
:1;
3679 unsigned int is_func_descriptor
:1;
3680 unsigned int fake
:1;
3682 /* Whether global opd/toc sym has been adjusted or not.
3683 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3684 should be set for all globals defined in any opd/toc section. */
3685 unsigned int adjust_done
:1;
3687 /* Set if we twiddled this symbol to weak at some stage. */
3688 unsigned int was_undefined
:1;
3690 /* Contexts in which symbol is used in the GOT (or TOC).
3691 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3692 corresponding relocs are encountered during check_relocs.
3693 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3694 indicate the corresponding GOT entry type is not needed.
3695 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3696 a TPREL one. We use a separate flag rather than setting TPREL
3697 just for convenience in distinguishing the two cases. */
3698 #define TLS_GD 1 /* GD reloc. */
3699 #define TLS_LD 2 /* LD reloc. */
3700 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3701 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3702 #define TLS_TLS 16 /* Any TLS reloc. */
3703 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3704 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3705 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3706 unsigned char tls_mask
;
3709 /* ppc64 ELF linker hash table. */
3711 struct ppc_link_hash_table
3713 struct elf_link_hash_table elf
;
3715 /* The stub hash table. */
3716 struct bfd_hash_table stub_hash_table
;
3718 /* Another hash table for plt_branch stubs. */
3719 struct bfd_hash_table branch_hash_table
;
3721 /* Linker stub bfd. */
3724 /* Linker call-backs. */
3725 asection
* (*add_stub_section
) (const char *, asection
*);
3726 void (*layout_sections_again
) (void);
3728 /* Array to keep track of which stub sections have been created, and
3729 information on stub grouping. */
3731 /* This is the section to which stubs in the group will be attached. */
3733 /* The stub section. */
3735 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3739 /* Temp used when calculating TOC pointers. */
3742 asection
*toc_first_sec
;
3744 /* Highest input section id. */
3747 /* Highest output section index. */
3750 /* Used when adding symbols. */
3751 struct ppc_link_hash_entry
*dot_syms
;
3753 /* List of input sections for each output section. */
3754 asection
**input_list
;
3756 /* Short-cuts to get to dynamic linker sections. */
3769 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3770 struct ppc_link_hash_entry
*tls_get_addr
;
3771 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3773 /* The size of reliplt used by got entry relocs. */
3774 bfd_size_type got_reli_size
;
3777 unsigned long stub_count
[ppc_stub_plt_call
];
3779 /* Number of stubs against global syms. */
3780 unsigned long stub_globals
;
3782 /* Set if we should emit symbols for stubs. */
3783 unsigned int emit_stub_syms
:1;
3785 /* Set if __tls_get_addr optimization should not be done. */
3786 unsigned int no_tls_get_addr_opt
:1;
3788 /* Support for multiple toc sections. */
3789 unsigned int do_multi_toc
:1;
3790 unsigned int multi_toc_needed
:1;
3791 unsigned int second_toc_pass
:1;
3792 unsigned int do_toc_opt
:1;
3795 unsigned int stub_error
:1;
3797 /* Temp used by ppc64_elf_process_dot_syms. */
3798 unsigned int twiddled_syms
:1;
3800 /* Incremented every time we size stubs. */
3801 unsigned int stub_iteration
;
3803 /* Small local sym cache. */
3804 struct sym_cache sym_cache
;
3807 /* Rename some of the generic section flags to better document how they
3810 /* Nonzero if this section has TLS related relocations. */
3811 #define has_tls_reloc sec_flg0
3813 /* Nonzero if this section has a call to __tls_get_addr. */
3814 #define has_tls_get_addr_call sec_flg1
3816 /* Nonzero if this section has any toc or got relocs. */
3817 #define has_toc_reloc sec_flg2
3819 /* Nonzero if this section has a call to another section that uses
3821 #define makes_toc_func_call sec_flg3
3823 /* Recursion protection when determining above flag. */
3824 #define call_check_in_progress sec_flg4
3825 #define call_check_done sec_flg5
3827 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3829 #define ppc_hash_table(p) \
3830 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3831 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3833 #define ppc_stub_hash_lookup(table, string, create, copy) \
3834 ((struct ppc_stub_hash_entry *) \
3835 bfd_hash_lookup ((table), (string), (create), (copy)))
3837 #define ppc_branch_hash_lookup(table, string, create, copy) \
3838 ((struct ppc_branch_hash_entry *) \
3839 bfd_hash_lookup ((table), (string), (create), (copy)))
3841 /* Create an entry in the stub hash table. */
3843 static struct bfd_hash_entry
*
3844 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3845 struct bfd_hash_table
*table
,
3848 /* Allocate the structure if it has not already been allocated by a
3852 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3857 /* Call the allocation method of the superclass. */
3858 entry
= bfd_hash_newfunc (entry
, table
, string
);
3861 struct ppc_stub_hash_entry
*eh
;
3863 /* Initialize the local fields. */
3864 eh
= (struct ppc_stub_hash_entry
*) entry
;
3865 eh
->stub_type
= ppc_stub_none
;
3866 eh
->stub_sec
= NULL
;
3867 eh
->stub_offset
= 0;
3868 eh
->target_value
= 0;
3869 eh
->target_section
= NULL
;
3877 /* Create an entry in the branch hash table. */
3879 static struct bfd_hash_entry
*
3880 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3881 struct bfd_hash_table
*table
,
3884 /* Allocate the structure if it has not already been allocated by a
3888 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3893 /* Call the allocation method of the superclass. */
3894 entry
= bfd_hash_newfunc (entry
, table
, string
);
3897 struct ppc_branch_hash_entry
*eh
;
3899 /* Initialize the local fields. */
3900 eh
= (struct ppc_branch_hash_entry
*) entry
;
3908 /* Create an entry in a ppc64 ELF linker hash table. */
3910 static struct bfd_hash_entry
*
3911 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3912 struct bfd_hash_table
*table
,
3915 /* Allocate the structure if it has not already been allocated by a
3919 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3924 /* Call the allocation method of the superclass. */
3925 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3928 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3930 memset (&eh
->u
.stub_cache
, 0,
3931 (sizeof (struct ppc_link_hash_entry
)
3932 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3934 /* When making function calls, old ABI code references function entry
3935 points (dot symbols), while new ABI code references the function
3936 descriptor symbol. We need to make any combination of reference and
3937 definition work together, without breaking archive linking.
3939 For a defined function "foo" and an undefined call to "bar":
3940 An old object defines "foo" and ".foo", references ".bar" (possibly
3942 A new object defines "foo" and references "bar".
3944 A new object thus has no problem with its undefined symbols being
3945 satisfied by definitions in an old object. On the other hand, the
3946 old object won't have ".bar" satisfied by a new object.
3948 Keep a list of newly added dot-symbols. */
3950 if (string
[0] == '.')
3952 struct ppc_link_hash_table
*htab
;
3954 htab
= (struct ppc_link_hash_table
*) table
;
3955 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3956 htab
->dot_syms
= eh
;
3963 /* Create a ppc64 ELF linker hash table. */
3965 static struct bfd_link_hash_table
*
3966 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3968 struct ppc_link_hash_table
*htab
;
3969 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3971 htab
= bfd_zmalloc (amt
);
3975 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3976 sizeof (struct ppc_link_hash_entry
),
3983 /* Init the stub hash table too. */
3984 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3985 sizeof (struct ppc_stub_hash_entry
)))
3988 /* And the branch hash table. */
3989 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3990 sizeof (struct ppc_branch_hash_entry
)))
3993 /* Initializing two fields of the union is just cosmetic. We really
3994 only care about glist, but when compiled on a 32-bit host the
3995 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3996 debugger inspection of these fields look nicer. */
3997 htab
->elf
.init_got_refcount
.refcount
= 0;
3998 htab
->elf
.init_got_refcount
.glist
= NULL
;
3999 htab
->elf
.init_plt_refcount
.refcount
= 0;
4000 htab
->elf
.init_plt_refcount
.glist
= NULL
;
4001 htab
->elf
.init_got_offset
.offset
= 0;
4002 htab
->elf
.init_got_offset
.glist
= NULL
;
4003 htab
->elf
.init_plt_offset
.offset
= 0;
4004 htab
->elf
.init_plt_offset
.glist
= NULL
;
4006 return &htab
->elf
.root
;
4009 /* Free the derived linker hash table. */
4012 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
4014 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
4016 bfd_hash_table_free (&ret
->stub_hash_table
);
4017 bfd_hash_table_free (&ret
->branch_hash_table
);
4018 _bfd_generic_link_hash_table_free (hash
);
4021 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
4024 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
4026 struct ppc_link_hash_table
*htab
;
4028 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
4030 /* Always hook our dynamic sections into the first bfd, which is the
4031 linker created stub bfd. This ensures that the GOT header is at
4032 the start of the output TOC section. */
4033 htab
= ppc_hash_table (info
);
4036 htab
->stub_bfd
= abfd
;
4037 htab
->elf
.dynobj
= abfd
;
4040 /* Build a name for an entry in the stub hash table. */
4043 ppc_stub_name (const asection
*input_section
,
4044 const asection
*sym_sec
,
4045 const struct ppc_link_hash_entry
*h
,
4046 const Elf_Internal_Rela
*rel
)
4051 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4052 offsets from a sym as a branch target? In fact, we could
4053 probably assume the addend is always zero. */
4054 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4058 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4059 stub_name
= bfd_malloc (len
);
4060 if (stub_name
== NULL
)
4063 sprintf (stub_name
, "%08x.%s+%x",
4064 input_section
->id
& 0xffffffff,
4065 h
->elf
.root
.root
.string
,
4066 (int) rel
->r_addend
& 0xffffffff);
4070 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4071 stub_name
= bfd_malloc (len
);
4072 if (stub_name
== NULL
)
4075 sprintf (stub_name
, "%08x.%x:%x+%x",
4076 input_section
->id
& 0xffffffff,
4077 sym_sec
->id
& 0xffffffff,
4078 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4079 (int) rel
->r_addend
& 0xffffffff);
4081 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4082 stub_name
[len
- 2] = 0;
4086 /* Look up an entry in the stub hash. Stub entries are cached because
4087 creating the stub name takes a bit of time. */
4089 static struct ppc_stub_hash_entry
*
4090 ppc_get_stub_entry (const asection
*input_section
,
4091 const asection
*sym_sec
,
4092 struct ppc_link_hash_entry
*h
,
4093 const Elf_Internal_Rela
*rel
,
4094 struct ppc_link_hash_table
*htab
)
4096 struct ppc_stub_hash_entry
*stub_entry
;
4097 const asection
*id_sec
;
4099 /* If this input section is part of a group of sections sharing one
4100 stub section, then use the id of the first section in the group.
4101 Stub names need to include a section id, as there may well be
4102 more than one stub used to reach say, printf, and we need to
4103 distinguish between them. */
4104 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4106 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4107 && h
->u
.stub_cache
->h
== h
4108 && h
->u
.stub_cache
->id_sec
== id_sec
)
4110 stub_entry
= h
->u
.stub_cache
;
4116 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4117 if (stub_name
== NULL
)
4120 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4121 stub_name
, FALSE
, FALSE
);
4123 h
->u
.stub_cache
= stub_entry
;
4131 /* Add a new stub entry to the stub hash. Not all fields of the new
4132 stub entry are initialised. */
4134 static struct ppc_stub_hash_entry
*
4135 ppc_add_stub (const char *stub_name
,
4137 struct ppc_link_hash_table
*htab
)
4141 struct ppc_stub_hash_entry
*stub_entry
;
4143 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4144 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4145 if (stub_sec
== NULL
)
4147 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4148 if (stub_sec
== NULL
)
4154 namelen
= strlen (link_sec
->name
);
4155 len
= namelen
+ sizeof (STUB_SUFFIX
);
4156 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4160 memcpy (s_name
, link_sec
->name
, namelen
);
4161 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4162 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4163 if (stub_sec
== NULL
)
4165 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4167 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4170 /* Enter this entry into the linker stub hash table. */
4171 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4173 if (stub_entry
== NULL
)
4175 (*_bfd_error_handler
) (_("%B: cannot create stub entry %s"),
4176 section
->owner
, stub_name
);
4180 stub_entry
->stub_sec
= stub_sec
;
4181 stub_entry
->stub_offset
= 0;
4182 stub_entry
->id_sec
= link_sec
;
4186 /* Create sections for linker generated code. */
4189 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4191 struct ppc_link_hash_table
*htab
;
4194 htab
= ppc_hash_table (info
);
4198 /* Create .sfpr for code to save and restore fp regs. */
4199 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4200 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4201 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4203 if (htab
->sfpr
== NULL
4204 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4207 /* Create .glink for lazy dynamic linking support. */
4208 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4210 if (htab
->glink
== NULL
4211 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4214 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4215 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4216 if (htab
->iplt
== NULL
4217 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4220 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4221 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4222 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4225 if (htab
->reliplt
== NULL
4226 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4229 /* Create branch lookup table for plt_branch stubs. */
4230 flags
= (SEC_ALLOC
| SEC_LOAD
4231 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4232 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4234 if (htab
->brlt
== NULL
4235 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4241 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4242 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4243 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4246 if (htab
->relbrlt
== NULL
4247 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4253 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4254 not already done. */
4257 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4259 asection
*got
, *relgot
;
4261 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4263 if (!is_ppc64_elf (abfd
))
4270 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4273 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4278 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4279 | SEC_LINKER_CREATED
);
4281 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4283 || !bfd_set_section_alignment (abfd
, got
, 3))
4286 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4287 flags
| SEC_READONLY
);
4289 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4292 ppc64_elf_tdata (abfd
)->got
= got
;
4293 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4297 /* Create the dynamic sections, and set up shortcuts. */
4300 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4302 struct ppc_link_hash_table
*htab
;
4304 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4307 htab
= ppc_hash_table (info
);
4312 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4313 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4314 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4315 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4317 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4319 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4320 || (!info
->shared
&& !htab
->relbss
))
4326 /* Follow indirect and warning symbol links. */
4328 static inline struct bfd_link_hash_entry
*
4329 follow_link (struct bfd_link_hash_entry
*h
)
4331 while (h
->type
== bfd_link_hash_indirect
4332 || h
->type
== bfd_link_hash_warning
)
4337 static inline struct elf_link_hash_entry
*
4338 elf_follow_link (struct elf_link_hash_entry
*h
)
4340 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4343 static inline struct ppc_link_hash_entry
*
4344 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4346 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4349 /* Merge PLT info on FROM with that on TO. */
4352 move_plt_plist (struct ppc_link_hash_entry
*from
,
4353 struct ppc_link_hash_entry
*to
)
4355 if (from
->elf
.plt
.plist
!= NULL
)
4357 if (to
->elf
.plt
.plist
!= NULL
)
4359 struct plt_entry
**entp
;
4360 struct plt_entry
*ent
;
4362 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4364 struct plt_entry
*dent
;
4366 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4367 if (dent
->addend
== ent
->addend
)
4369 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4376 *entp
= to
->elf
.plt
.plist
;
4379 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4380 from
->elf
.plt
.plist
= NULL
;
4384 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4387 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4388 struct elf_link_hash_entry
*dir
,
4389 struct elf_link_hash_entry
*ind
)
4391 struct ppc_link_hash_entry
*edir
, *eind
;
4393 edir
= (struct ppc_link_hash_entry
*) dir
;
4394 eind
= (struct ppc_link_hash_entry
*) ind
;
4396 /* Copy over any dynamic relocs we may have on the indirect sym. */
4397 if (eind
->dyn_relocs
!= NULL
)
4399 if (edir
->dyn_relocs
!= NULL
)
4401 struct ppc_dyn_relocs
**pp
;
4402 struct ppc_dyn_relocs
*p
;
4404 /* Add reloc counts against the indirect sym to the direct sym
4405 list. Merge any entries against the same section. */
4406 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4408 struct ppc_dyn_relocs
*q
;
4410 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4411 if (q
->sec
== p
->sec
)
4413 q
->pc_count
+= p
->pc_count
;
4414 q
->count
+= p
->count
;
4421 *pp
= edir
->dyn_relocs
;
4424 edir
->dyn_relocs
= eind
->dyn_relocs
;
4425 eind
->dyn_relocs
= NULL
;
4428 edir
->is_func
|= eind
->is_func
;
4429 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4430 edir
->tls_mask
|= eind
->tls_mask
;
4431 if (eind
->oh
!= NULL
)
4432 edir
->oh
= ppc_follow_link (eind
->oh
);
4434 /* If called to transfer flags for a weakdef during processing
4435 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4436 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4437 if (!(ELIMINATE_COPY_RELOCS
4438 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4439 && edir
->elf
.dynamic_adjusted
))
4440 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4442 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4443 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4444 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4445 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4447 /* If we were called to copy over info for a weak sym, that's all. */
4448 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4451 /* Copy over got entries that we may have already seen to the
4452 symbol which just became indirect. */
4453 if (eind
->elf
.got
.glist
!= NULL
)
4455 if (edir
->elf
.got
.glist
!= NULL
)
4457 struct got_entry
**entp
;
4458 struct got_entry
*ent
;
4460 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4462 struct got_entry
*dent
;
4464 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4465 if (dent
->addend
== ent
->addend
4466 && dent
->owner
== ent
->owner
4467 && dent
->tls_type
== ent
->tls_type
)
4469 dent
->got
.refcount
+= ent
->got
.refcount
;
4476 *entp
= edir
->elf
.got
.glist
;
4479 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4480 eind
->elf
.got
.glist
= NULL
;
4483 /* And plt entries. */
4484 move_plt_plist (eind
, edir
);
4486 if (eind
->elf
.dynindx
!= -1)
4488 if (edir
->elf
.dynindx
!= -1)
4489 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4490 edir
->elf
.dynstr_index
);
4491 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4492 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4493 eind
->elf
.dynindx
= -1;
4494 eind
->elf
.dynstr_index
= 0;
4498 /* Find the function descriptor hash entry from the given function code
4499 hash entry FH. Link the entries via their OH fields. */
4501 static struct ppc_link_hash_entry
*
4502 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4504 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4508 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4510 fdh
= (struct ppc_link_hash_entry
*)
4511 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4515 fdh
->is_func_descriptor
= 1;
4521 return ppc_follow_link (fdh
);
4524 /* Make a fake function descriptor sym for the code sym FH. */
4526 static struct ppc_link_hash_entry
*
4527 make_fdh (struct bfd_link_info
*info
,
4528 struct ppc_link_hash_entry
*fh
)
4532 struct bfd_link_hash_entry
*bh
;
4533 struct ppc_link_hash_entry
*fdh
;
4535 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4536 newsym
= bfd_make_empty_symbol (abfd
);
4537 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4538 newsym
->section
= bfd_und_section_ptr
;
4540 newsym
->flags
= BSF_WEAK
;
4543 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4544 newsym
->flags
, newsym
->section
,
4545 newsym
->value
, NULL
, FALSE
, FALSE
,
4549 fdh
= (struct ppc_link_hash_entry
*) bh
;
4550 fdh
->elf
.non_elf
= 0;
4552 fdh
->is_func_descriptor
= 1;
4559 /* Fix function descriptor symbols defined in .opd sections to be
4563 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4564 struct bfd_link_info
*info
,
4565 Elf_Internal_Sym
*isym
,
4566 const char **name ATTRIBUTE_UNUSED
,
4567 flagword
*flags ATTRIBUTE_UNUSED
,
4569 bfd_vma
*value ATTRIBUTE_UNUSED
)
4571 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4573 if ((ibfd
->flags
& DYNAMIC
) == 0)
4574 elf_tdata (info
->output_bfd
)->has_ifunc_symbols
= TRUE
;
4576 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4578 else if (*sec
!= NULL
4579 && strcmp ((*sec
)->name
, ".opd") == 0)
4580 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4585 /* This function makes an old ABI object reference to ".bar" cause the
4586 inclusion of a new ABI object archive that defines "bar".
4587 NAME is a symbol defined in an archive. Return a symbol in the hash
4588 table that might be satisfied by the archive symbols. */
4590 static struct elf_link_hash_entry
*
4591 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4592 struct bfd_link_info
*info
,
4595 struct elf_link_hash_entry
*h
;
4599 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4601 /* Don't return this sym if it is a fake function descriptor
4602 created by add_symbol_adjust. */
4603 && !(h
->root
.type
== bfd_link_hash_undefweak
4604 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4610 len
= strlen (name
);
4611 dot_name
= bfd_alloc (abfd
, len
+ 2);
4612 if (dot_name
== NULL
)
4613 return (struct elf_link_hash_entry
*) 0 - 1;
4615 memcpy (dot_name
+ 1, name
, len
+ 1);
4616 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4617 bfd_release (abfd
, dot_name
);
4621 /* This function satisfies all old ABI object references to ".bar" if a
4622 new ABI object defines "bar". Well, at least, undefined dot symbols
4623 are made weak. This stops later archive searches from including an
4624 object if we already have a function descriptor definition. It also
4625 prevents the linker complaining about undefined symbols.
4626 We also check and correct mismatched symbol visibility here. The
4627 most restrictive visibility of the function descriptor and the
4628 function entry symbol is used. */
4631 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4633 struct ppc_link_hash_table
*htab
;
4634 struct ppc_link_hash_entry
*fdh
;
4636 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4639 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4640 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4642 if (eh
->elf
.root
.root
.string
[0] != '.')
4645 htab
= ppc_hash_table (info
);
4649 fdh
= lookup_fdh (eh
, htab
);
4652 if (!info
->relocatable
4653 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4654 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4655 && eh
->elf
.ref_regular
)
4657 /* Make an undefweak function descriptor sym, which is enough to
4658 pull in an --as-needed shared lib, but won't cause link
4659 errors. Archives are handled elsewhere. */
4660 fdh
= make_fdh (info
, eh
);
4663 fdh
->elf
.ref_regular
= 1;
4668 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4669 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4670 if (entry_vis
< descr_vis
)
4671 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4672 else if (entry_vis
> descr_vis
)
4673 eh
->elf
.other
+= descr_vis
- entry_vis
;
4675 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4676 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4677 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4679 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4680 eh
->was_undefined
= 1;
4681 htab
->twiddled_syms
= 1;
4688 /* Process list of dot-symbols we made in link_hash_newfunc. */
4691 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4693 struct ppc_link_hash_table
*htab
;
4694 struct ppc_link_hash_entry
**p
, *eh
;
4696 if (!is_ppc64_elf (info
->output_bfd
))
4698 htab
= ppc_hash_table (info
);
4702 if (is_ppc64_elf (ibfd
))
4704 p
= &htab
->dot_syms
;
4705 while ((eh
= *p
) != NULL
)
4708 if (!add_symbol_adjust (eh
, info
))
4710 p
= &eh
->u
.next_dot_sym
;
4714 /* Clear the list for non-ppc64 input files. */
4715 p
= &htab
->dot_syms
;
4716 while ((eh
= *p
) != NULL
)
4719 p
= &eh
->u
.next_dot_sym
;
4722 /* We need to fix the undefs list for any syms we have twiddled to
4724 if (htab
->twiddled_syms
)
4726 bfd_link_repair_undef_list (&htab
->elf
.root
);
4727 htab
->twiddled_syms
= 0;
4732 /* Undo hash table changes when an --as-needed input file is determined
4733 not to be needed. */
4736 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4737 struct bfd_link_info
*info
)
4739 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4744 htab
->dot_syms
= NULL
;
4748 static struct plt_entry
**
4749 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4750 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4752 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4753 struct plt_entry
**local_plt
;
4754 unsigned char *local_got_tls_masks
;
4756 if (local_got_ents
== NULL
)
4758 bfd_size_type size
= symtab_hdr
->sh_info
;
4760 size
*= (sizeof (*local_got_ents
)
4761 + sizeof (*local_plt
)
4762 + sizeof (*local_got_tls_masks
));
4763 local_got_ents
= bfd_zalloc (abfd
, size
);
4764 if (local_got_ents
== NULL
)
4766 elf_local_got_ents (abfd
) = local_got_ents
;
4769 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4771 struct got_entry
*ent
;
4773 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4774 if (ent
->addend
== r_addend
4775 && ent
->owner
== abfd
4776 && ent
->tls_type
== tls_type
)
4780 bfd_size_type amt
= sizeof (*ent
);
4781 ent
= bfd_alloc (abfd
, amt
);
4784 ent
->next
= local_got_ents
[r_symndx
];
4785 ent
->addend
= r_addend
;
4787 ent
->tls_type
= tls_type
;
4788 ent
->is_indirect
= FALSE
;
4789 ent
->got
.refcount
= 0;
4790 local_got_ents
[r_symndx
] = ent
;
4792 ent
->got
.refcount
+= 1;
4795 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4796 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4797 local_got_tls_masks
[r_symndx
] |= tls_type
;
4799 return local_plt
+ r_symndx
;
4803 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4805 struct plt_entry
*ent
;
4807 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4808 if (ent
->addend
== addend
)
4812 bfd_size_type amt
= sizeof (*ent
);
4813 ent
= bfd_alloc (abfd
, amt
);
4817 ent
->addend
= addend
;
4818 ent
->plt
.refcount
= 0;
4821 ent
->plt
.refcount
+= 1;
4826 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4828 return (r_type
== R_PPC64_REL24
4829 || r_type
== R_PPC64_REL14
4830 || r_type
== R_PPC64_REL14_BRTAKEN
4831 || r_type
== R_PPC64_REL14_BRNTAKEN
4832 || r_type
== R_PPC64_ADDR24
4833 || r_type
== R_PPC64_ADDR14
4834 || r_type
== R_PPC64_ADDR14_BRTAKEN
4835 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4838 /* Look through the relocs for a section during the first phase, and
4839 calculate needed space in the global offset table, procedure
4840 linkage table, and dynamic reloc sections. */
4843 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4844 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4846 struct ppc_link_hash_table
*htab
;
4847 Elf_Internal_Shdr
*symtab_hdr
;
4848 struct elf_link_hash_entry
**sym_hashes
;
4849 const Elf_Internal_Rela
*rel
;
4850 const Elf_Internal_Rela
*rel_end
;
4852 asection
**opd_sym_map
;
4853 struct elf_link_hash_entry
*tga
, *dottga
;
4855 if (info
->relocatable
)
4858 /* Don't do anything special with non-loaded, non-alloced sections.
4859 In particular, any relocs in such sections should not affect GOT
4860 and PLT reference counting (ie. we don't allow them to create GOT
4861 or PLT entries), there's no possibility or desire to optimize TLS
4862 relocs, and there's not much point in propagating relocs to shared
4863 libs that the dynamic linker won't relocate. */
4864 if ((sec
->flags
& SEC_ALLOC
) == 0)
4867 BFD_ASSERT (is_ppc64_elf (abfd
));
4869 htab
= ppc_hash_table (info
);
4873 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4874 FALSE
, FALSE
, TRUE
);
4875 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4876 FALSE
, FALSE
, TRUE
);
4877 symtab_hdr
= &elf_symtab_hdr (abfd
);
4878 sym_hashes
= elf_sym_hashes (abfd
);
4881 if (strcmp (sec
->name
, ".opd") == 0)
4883 /* Garbage collection needs some extra help with .opd sections.
4884 We don't want to necessarily keep everything referenced by
4885 relocs in .opd, as that would keep all functions. Instead,
4886 if we reference an .opd symbol (a function descriptor), we
4887 want to keep the function code symbol's section. This is
4888 easy for global symbols, but for local syms we need to keep
4889 information about the associated function section. */
4892 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4893 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4894 if (opd_sym_map
== NULL
)
4896 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4897 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4898 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4901 if (htab
->sfpr
== NULL
4902 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4905 rel_end
= relocs
+ sec
->reloc_count
;
4906 for (rel
= relocs
; rel
< rel_end
; rel
++)
4908 unsigned long r_symndx
;
4909 struct elf_link_hash_entry
*h
;
4910 enum elf_ppc64_reloc_type r_type
;
4912 struct _ppc64_elf_section_data
*ppc64_sec
;
4913 struct plt_entry
**ifunc
;
4915 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4916 if (r_symndx
< symtab_hdr
->sh_info
)
4920 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4921 h
= elf_follow_link (h
);
4928 if (h
->type
== STT_GNU_IFUNC
)
4931 ifunc
= &h
->plt
.plist
;
4936 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4941 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4943 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4944 rel
->r_addend
, PLT_IFUNC
);
4949 r_type
= ELF64_R_TYPE (rel
->r_info
);
4950 if (is_branch_reloc (r_type
))
4952 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4955 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4956 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4957 /* We have a new-style __tls_get_addr call with a marker
4961 /* Mark this section as having an old-style call. */
4962 sec
->has_tls_get_addr_call
= 1;
4965 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4967 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
4975 /* These special tls relocs tie a call to __tls_get_addr with
4976 its parameter symbol. */
4979 case R_PPC64_GOT_TLSLD16
:
4980 case R_PPC64_GOT_TLSLD16_LO
:
4981 case R_PPC64_GOT_TLSLD16_HI
:
4982 case R_PPC64_GOT_TLSLD16_HA
:
4983 tls_type
= TLS_TLS
| TLS_LD
;
4986 case R_PPC64_GOT_TLSGD16
:
4987 case R_PPC64_GOT_TLSGD16_LO
:
4988 case R_PPC64_GOT_TLSGD16_HI
:
4989 case R_PPC64_GOT_TLSGD16_HA
:
4990 tls_type
= TLS_TLS
| TLS_GD
;
4993 case R_PPC64_GOT_TPREL16_DS
:
4994 case R_PPC64_GOT_TPREL16_LO_DS
:
4995 case R_PPC64_GOT_TPREL16_HI
:
4996 case R_PPC64_GOT_TPREL16_HA
:
4997 if (!info
->executable
)
4998 info
->flags
|= DF_STATIC_TLS
;
4999 tls_type
= TLS_TLS
| TLS_TPREL
;
5002 case R_PPC64_GOT_DTPREL16_DS
:
5003 case R_PPC64_GOT_DTPREL16_LO_DS
:
5004 case R_PPC64_GOT_DTPREL16_HI
:
5005 case R_PPC64_GOT_DTPREL16_HA
:
5006 tls_type
= TLS_TLS
| TLS_DTPREL
;
5008 sec
->has_tls_reloc
= 1;
5012 case R_PPC64_GOT16_DS
:
5013 case R_PPC64_GOT16_HA
:
5014 case R_PPC64_GOT16_HI
:
5015 case R_PPC64_GOT16_LO
:
5016 case R_PPC64_GOT16_LO_DS
:
5017 /* This symbol requires a global offset table entry. */
5018 sec
->has_toc_reloc
= 1;
5019 if (r_type
== R_PPC64_GOT_TLSLD16
5020 || r_type
== R_PPC64_GOT_TLSGD16
5021 || r_type
== R_PPC64_GOT_TPREL16_DS
5022 || r_type
== R_PPC64_GOT_DTPREL16_DS
5023 || r_type
== R_PPC64_GOT16
5024 || r_type
== R_PPC64_GOT16_DS
)
5026 htab
->do_multi_toc
= 1;
5027 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5030 if (ppc64_elf_tdata (abfd
)->got
== NULL
5031 && !create_got_section (abfd
, info
))
5036 struct ppc_link_hash_entry
*eh
;
5037 struct got_entry
*ent
;
5039 eh
= (struct ppc_link_hash_entry
*) h
;
5040 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5041 if (ent
->addend
== rel
->r_addend
5042 && ent
->owner
== abfd
5043 && ent
->tls_type
== tls_type
)
5047 bfd_size_type amt
= sizeof (*ent
);
5048 ent
= bfd_alloc (abfd
, amt
);
5051 ent
->next
= eh
->elf
.got
.glist
;
5052 ent
->addend
= rel
->r_addend
;
5054 ent
->tls_type
= tls_type
;
5055 ent
->is_indirect
= FALSE
;
5056 ent
->got
.refcount
= 0;
5057 eh
->elf
.got
.glist
= ent
;
5059 ent
->got
.refcount
+= 1;
5060 eh
->tls_mask
|= tls_type
;
5063 /* This is a global offset table entry for a local symbol. */
5064 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5065 rel
->r_addend
, tls_type
))
5069 case R_PPC64_PLT16_HA
:
5070 case R_PPC64_PLT16_HI
:
5071 case R_PPC64_PLT16_LO
:
5074 /* This symbol requires a procedure linkage table entry. We
5075 actually build the entry in adjust_dynamic_symbol,
5076 because this might be a case of linking PIC code without
5077 linking in any dynamic objects, in which case we don't
5078 need to generate a procedure linkage table after all. */
5081 /* It does not make sense to have a procedure linkage
5082 table entry for a local symbol. */
5083 bfd_set_error (bfd_error_bad_value
);
5088 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5091 if (h
->root
.root
.string
[0] == '.'
5092 && h
->root
.root
.string
[1] != '\0')
5093 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5097 /* The following relocations don't need to propagate the
5098 relocation if linking a shared object since they are
5099 section relative. */
5100 case R_PPC64_SECTOFF
:
5101 case R_PPC64_SECTOFF_LO
:
5102 case R_PPC64_SECTOFF_HI
:
5103 case R_PPC64_SECTOFF_HA
:
5104 case R_PPC64_SECTOFF_DS
:
5105 case R_PPC64_SECTOFF_LO_DS
:
5106 case R_PPC64_DTPREL16
:
5107 case R_PPC64_DTPREL16_LO
:
5108 case R_PPC64_DTPREL16_HI
:
5109 case R_PPC64_DTPREL16_HA
:
5110 case R_PPC64_DTPREL16_DS
:
5111 case R_PPC64_DTPREL16_LO_DS
:
5112 case R_PPC64_DTPREL16_HIGHER
:
5113 case R_PPC64_DTPREL16_HIGHERA
:
5114 case R_PPC64_DTPREL16_HIGHEST
:
5115 case R_PPC64_DTPREL16_HIGHESTA
:
5120 case R_PPC64_REL16_LO
:
5121 case R_PPC64_REL16_HI
:
5122 case R_PPC64_REL16_HA
:
5126 case R_PPC64_TOC16_DS
:
5127 htab
->do_multi_toc
= 1;
5128 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5129 case R_PPC64_TOC16_LO
:
5130 case R_PPC64_TOC16_HI
:
5131 case R_PPC64_TOC16_HA
:
5132 case R_PPC64_TOC16_LO_DS
:
5133 sec
->has_toc_reloc
= 1;
5136 /* This relocation describes the C++ object vtable hierarchy.
5137 Reconstruct it for later use during GC. */
5138 case R_PPC64_GNU_VTINHERIT
:
5139 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5143 /* This relocation describes which C++ vtable entries are actually
5144 used. Record for later use during GC. */
5145 case R_PPC64_GNU_VTENTRY
:
5146 BFD_ASSERT (h
!= NULL
);
5148 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5153 case R_PPC64_REL14_BRTAKEN
:
5154 case R_PPC64_REL14_BRNTAKEN
:
5156 asection
*dest
= NULL
;
5158 /* Heuristic: If jumping outside our section, chances are
5159 we are going to need a stub. */
5162 /* If the sym is weak it may be overridden later, so
5163 don't assume we know where a weak sym lives. */
5164 if (h
->root
.type
== bfd_link_hash_defined
)
5165 dest
= h
->root
.u
.def
.section
;
5169 Elf_Internal_Sym
*isym
;
5171 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5176 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5180 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5185 if (h
!= NULL
&& ifunc
== NULL
)
5187 /* We may need a .plt entry if the function this reloc
5188 refers to is in a shared lib. */
5189 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5192 if (h
->root
.root
.string
[0] == '.'
5193 && h
->root
.root
.string
[1] != '\0')
5194 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5195 if (h
== tga
|| h
== dottga
)
5196 sec
->has_tls_reloc
= 1;
5200 case R_PPC64_TPREL64
:
5201 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5202 if (!info
->executable
)
5203 info
->flags
|= DF_STATIC_TLS
;
5206 case R_PPC64_DTPMOD64
:
5207 if (rel
+ 1 < rel_end
5208 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5209 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5210 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5212 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5215 case R_PPC64_DTPREL64
:
5216 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5218 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5219 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5220 /* This is the second reloc of a dtpmod, dtprel pair.
5221 Don't mark with TLS_DTPREL. */
5225 sec
->has_tls_reloc
= 1;
5228 struct ppc_link_hash_entry
*eh
;
5229 eh
= (struct ppc_link_hash_entry
*) h
;
5230 eh
->tls_mask
|= tls_type
;
5233 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5234 rel
->r_addend
, tls_type
))
5237 ppc64_sec
= ppc64_elf_section_data (sec
);
5238 if (ppc64_sec
->sec_type
!= sec_toc
)
5242 /* One extra to simplify get_tls_mask. */
5243 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5244 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5245 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5247 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5248 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5249 if (ppc64_sec
->u
.toc
.add
== NULL
)
5251 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5252 ppc64_sec
->sec_type
= sec_toc
;
5254 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5255 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5256 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5258 /* Mark the second slot of a GD or LD entry.
5259 -1 to indicate GD and -2 to indicate LD. */
5260 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5261 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5262 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5263 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5266 case R_PPC64_TPREL16
:
5267 case R_PPC64_TPREL16_LO
:
5268 case R_PPC64_TPREL16_HI
:
5269 case R_PPC64_TPREL16_HA
:
5270 case R_PPC64_TPREL16_DS
:
5271 case R_PPC64_TPREL16_LO_DS
:
5272 case R_PPC64_TPREL16_HIGHER
:
5273 case R_PPC64_TPREL16_HIGHERA
:
5274 case R_PPC64_TPREL16_HIGHEST
:
5275 case R_PPC64_TPREL16_HIGHESTA
:
5278 if (!info
->executable
)
5279 info
->flags
|= DF_STATIC_TLS
;
5284 case R_PPC64_ADDR64
:
5285 if (opd_sym_map
!= NULL
5286 && rel
+ 1 < rel_end
5287 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5291 if (h
->root
.root
.string
[0] == '.'
5292 && h
->root
.root
.string
[1] != 0
5293 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5296 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5301 Elf_Internal_Sym
*isym
;
5303 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5308 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5309 if (s
!= NULL
&& s
!= sec
)
5310 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5318 case R_PPC64_ADDR14
:
5319 case R_PPC64_ADDR14_BRNTAKEN
:
5320 case R_PPC64_ADDR14_BRTAKEN
:
5321 case R_PPC64_ADDR16
:
5322 case R_PPC64_ADDR16_DS
:
5323 case R_PPC64_ADDR16_HA
:
5324 case R_PPC64_ADDR16_HI
:
5325 case R_PPC64_ADDR16_HIGHER
:
5326 case R_PPC64_ADDR16_HIGHERA
:
5327 case R_PPC64_ADDR16_HIGHEST
:
5328 case R_PPC64_ADDR16_HIGHESTA
:
5329 case R_PPC64_ADDR16_LO
:
5330 case R_PPC64_ADDR16_LO_DS
:
5331 case R_PPC64_ADDR24
:
5332 case R_PPC64_ADDR32
:
5333 case R_PPC64_UADDR16
:
5334 case R_PPC64_UADDR32
:
5335 case R_PPC64_UADDR64
:
5337 if (h
!= NULL
&& !info
->shared
)
5338 /* We may need a copy reloc. */
5341 /* Don't propagate .opd relocs. */
5342 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5345 /* If we are creating a shared library, and this is a reloc
5346 against a global symbol, or a non PC relative reloc
5347 against a local symbol, then we need to copy the reloc
5348 into the shared library. However, if we are linking with
5349 -Bsymbolic, we do not need to copy a reloc against a
5350 global symbol which is defined in an object we are
5351 including in the link (i.e., DEF_REGULAR is set). At
5352 this point we have not seen all the input files, so it is
5353 possible that DEF_REGULAR is not set now but will be set
5354 later (it is never cleared). In case of a weak definition,
5355 DEF_REGULAR may be cleared later by a strong definition in
5356 a shared library. We account for that possibility below by
5357 storing information in the dyn_relocs field of the hash
5358 table entry. A similar situation occurs when creating
5359 shared libraries and symbol visibility changes render the
5362 If on the other hand, we are creating an executable, we
5363 may need to keep relocations for symbols satisfied by a
5364 dynamic library if we manage to avoid copy relocs for the
5368 && (must_be_dyn_reloc (info
, r_type
)
5370 && (! info
->symbolic
5371 || h
->root
.type
== bfd_link_hash_defweak
5372 || !h
->def_regular
))))
5373 || (ELIMINATE_COPY_RELOCS
5376 && (h
->root
.type
== bfd_link_hash_defweak
5377 || !h
->def_regular
))
5381 struct ppc_dyn_relocs
*p
;
5382 struct ppc_dyn_relocs
**head
;
5384 /* We must copy these reloc types into the output file.
5385 Create a reloc section in dynobj and make room for
5389 sreloc
= _bfd_elf_make_dynamic_reloc_section
5390 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5396 /* If this is a global symbol, we count the number of
5397 relocations we need for this symbol. */
5400 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5404 /* Track dynamic relocs needed for local syms too.
5405 We really need local syms available to do this
5409 Elf_Internal_Sym
*isym
;
5411 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5416 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5420 vpp
= &elf_section_data (s
)->local_dynrel
;
5421 head
= (struct ppc_dyn_relocs
**) vpp
;
5425 if (p
== NULL
|| p
->sec
!= sec
)
5427 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5438 if (!must_be_dyn_reloc (info
, r_type
))
5451 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5452 of the code entry point, and its section. */
5455 opd_entry_value (asection
*opd_sec
,
5457 asection
**code_sec
,
5460 bfd
*opd_bfd
= opd_sec
->owner
;
5461 Elf_Internal_Rela
*relocs
;
5462 Elf_Internal_Rela
*lo
, *hi
, *look
;
5465 /* No relocs implies we are linking a --just-symbols object. */
5466 if (opd_sec
->reloc_count
== 0)
5468 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, &val
, offset
, 8))
5469 return (bfd_vma
) -1;
5471 if (code_sec
!= NULL
)
5473 asection
*sec
, *likely
= NULL
;
5474 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5476 && (sec
->flags
& SEC_LOAD
) != 0
5477 && (sec
->flags
& SEC_ALLOC
) != 0)
5482 if (code_off
!= NULL
)
5483 *code_off
= val
- likely
->vma
;
5489 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5491 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5493 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5495 /* Go find the opd reloc at the sym address. */
5497 BFD_ASSERT (lo
!= NULL
);
5498 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5502 look
= lo
+ (hi
- lo
) / 2;
5503 if (look
->r_offset
< offset
)
5505 else if (look
->r_offset
> offset
)
5509 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5511 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5512 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5514 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5517 if (symndx
< symtab_hdr
->sh_info
)
5519 Elf_Internal_Sym
*sym
;
5521 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5524 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5525 symtab_hdr
->sh_info
,
5526 0, NULL
, NULL
, NULL
);
5529 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5533 val
= sym
->st_value
;
5534 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5535 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5539 struct elf_link_hash_entry
**sym_hashes
;
5540 struct elf_link_hash_entry
*rh
;
5542 sym_hashes
= elf_sym_hashes (opd_bfd
);
5543 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5544 rh
= elf_follow_link (rh
);
5545 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5546 || rh
->root
.type
== bfd_link_hash_defweak
);
5547 val
= rh
->root
.u
.def
.value
;
5548 sec
= rh
->root
.u
.def
.section
;
5550 val
+= look
->r_addend
;
5551 if (code_off
!= NULL
)
5553 if (code_sec
!= NULL
)
5555 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5556 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5565 /* Return true if symbol is defined in a regular object file. */
5568 is_static_defined (struct elf_link_hash_entry
*h
)
5570 return ((h
->root
.type
== bfd_link_hash_defined
5571 || h
->root
.type
== bfd_link_hash_defweak
)
5572 && h
->root
.u
.def
.section
!= NULL
5573 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5576 /* If FDH is a function descriptor symbol, return the associated code
5577 entry symbol if it is defined. Return NULL otherwise. */
5579 static struct ppc_link_hash_entry
*
5580 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5582 if (fdh
->is_func_descriptor
)
5584 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5585 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5586 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5592 /* If FH is a function code entry symbol, return the associated
5593 function descriptor symbol if it is defined. Return NULL otherwise. */
5595 static struct ppc_link_hash_entry
*
5596 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5599 && fh
->oh
->is_func_descriptor
)
5601 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5602 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5603 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5609 /* Mark all our entry sym sections, both opd and code section. */
5612 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5614 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5615 struct bfd_sym_chain
*sym
;
5620 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5622 struct ppc_link_hash_entry
*eh
, *fh
;
5625 eh
= (struct ppc_link_hash_entry
*)
5626 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5629 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5630 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5633 fh
= defined_code_entry (eh
);
5636 sec
= fh
->elf
.root
.u
.def
.section
;
5637 sec
->flags
|= SEC_KEEP
;
5639 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5640 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5641 eh
->elf
.root
.u
.def
.value
,
5642 &sec
, NULL
) != (bfd_vma
) -1)
5643 sec
->flags
|= SEC_KEEP
;
5645 sec
= eh
->elf
.root
.u
.def
.section
;
5646 sec
->flags
|= SEC_KEEP
;
5650 /* Mark sections containing dynamically referenced symbols. When
5651 building shared libraries, we must assume that any visible symbol is
5655 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5657 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5658 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5659 struct ppc_link_hash_entry
*fdh
;
5661 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
5662 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
5664 /* Dynamic linking info is on the func descriptor sym. */
5665 fdh
= defined_func_desc (eh
);
5669 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5670 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5671 && (eh
->elf
.ref_dynamic
5672 || (!info
->executable
5673 && eh
->elf
.def_regular
5674 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5675 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5678 struct ppc_link_hash_entry
*fh
;
5680 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5682 /* Function descriptor syms cause the associated
5683 function code sym section to be marked. */
5684 fh
= defined_code_entry (eh
);
5687 code_sec
= fh
->elf
.root
.u
.def
.section
;
5688 code_sec
->flags
|= SEC_KEEP
;
5690 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5691 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5692 eh
->elf
.root
.u
.def
.value
,
5693 &code_sec
, NULL
) != (bfd_vma
) -1)
5694 code_sec
->flags
|= SEC_KEEP
;
5700 /* Return the section that should be marked against GC for a given
5704 ppc64_elf_gc_mark_hook (asection
*sec
,
5705 struct bfd_link_info
*info
,
5706 Elf_Internal_Rela
*rel
,
5707 struct elf_link_hash_entry
*h
,
5708 Elf_Internal_Sym
*sym
)
5712 /* Syms return NULL if we're marking .opd, so we avoid marking all
5713 function sections, as all functions are referenced in .opd. */
5715 if (get_opd_info (sec
) != NULL
)
5720 enum elf_ppc64_reloc_type r_type
;
5721 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5723 r_type
= ELF64_R_TYPE (rel
->r_info
);
5726 case R_PPC64_GNU_VTINHERIT
:
5727 case R_PPC64_GNU_VTENTRY
:
5731 switch (h
->root
.type
)
5733 case bfd_link_hash_defined
:
5734 case bfd_link_hash_defweak
:
5735 eh
= (struct ppc_link_hash_entry
*) h
;
5736 fdh
= defined_func_desc (eh
);
5740 /* Function descriptor syms cause the associated
5741 function code sym section to be marked. */
5742 fh
= defined_code_entry (eh
);
5745 /* They also mark their opd section. */
5746 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5748 rsec
= fh
->elf
.root
.u
.def
.section
;
5750 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5751 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5752 eh
->elf
.root
.u
.def
.value
,
5753 &rsec
, NULL
) != (bfd_vma
) -1)
5754 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5756 rsec
= h
->root
.u
.def
.section
;
5759 case bfd_link_hash_common
:
5760 rsec
= h
->root
.u
.c
.p
->section
;
5764 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5770 struct _opd_sec_data
*opd
;
5772 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5773 opd
= get_opd_info (rsec
);
5774 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5778 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5785 /* Update the .got, .plt. and dynamic reloc reference counts for the
5786 section being removed. */
5789 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5790 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5792 struct ppc_link_hash_table
*htab
;
5793 Elf_Internal_Shdr
*symtab_hdr
;
5794 struct elf_link_hash_entry
**sym_hashes
;
5795 struct got_entry
**local_got_ents
;
5796 const Elf_Internal_Rela
*rel
, *relend
;
5798 if (info
->relocatable
)
5801 if ((sec
->flags
& SEC_ALLOC
) == 0)
5804 elf_section_data (sec
)->local_dynrel
= NULL
;
5806 htab
= ppc_hash_table (info
);
5810 symtab_hdr
= &elf_symtab_hdr (abfd
);
5811 sym_hashes
= elf_sym_hashes (abfd
);
5812 local_got_ents
= elf_local_got_ents (abfd
);
5814 relend
= relocs
+ sec
->reloc_count
;
5815 for (rel
= relocs
; rel
< relend
; rel
++)
5817 unsigned long r_symndx
;
5818 enum elf_ppc64_reloc_type r_type
;
5819 struct elf_link_hash_entry
*h
= NULL
;
5820 unsigned char tls_type
= 0;
5822 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5823 r_type
= ELF64_R_TYPE (rel
->r_info
);
5824 if (r_symndx
>= symtab_hdr
->sh_info
)
5826 struct ppc_link_hash_entry
*eh
;
5827 struct ppc_dyn_relocs
**pp
;
5828 struct ppc_dyn_relocs
*p
;
5830 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5831 h
= elf_follow_link (h
);
5832 eh
= (struct ppc_link_hash_entry
*) h
;
5834 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5837 /* Everything must go for SEC. */
5843 if (is_branch_reloc (r_type
))
5845 struct plt_entry
**ifunc
= NULL
;
5848 if (h
->type
== STT_GNU_IFUNC
)
5849 ifunc
= &h
->plt
.plist
;
5851 else if (local_got_ents
!= NULL
)
5853 struct plt_entry
**local_plt
= (struct plt_entry
**)
5854 (local_got_ents
+ symtab_hdr
->sh_info
);
5855 unsigned char *local_got_tls_masks
= (unsigned char *)
5856 (local_plt
+ symtab_hdr
->sh_info
);
5857 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5858 ifunc
= local_plt
+ r_symndx
;
5862 struct plt_entry
*ent
;
5864 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5865 if (ent
->addend
== rel
->r_addend
)
5869 if (ent
->plt
.refcount
> 0)
5870 ent
->plt
.refcount
-= 1;
5877 case R_PPC64_GOT_TLSLD16
:
5878 case R_PPC64_GOT_TLSLD16_LO
:
5879 case R_PPC64_GOT_TLSLD16_HI
:
5880 case R_PPC64_GOT_TLSLD16_HA
:
5881 tls_type
= TLS_TLS
| TLS_LD
;
5884 case R_PPC64_GOT_TLSGD16
:
5885 case R_PPC64_GOT_TLSGD16_LO
:
5886 case R_PPC64_GOT_TLSGD16_HI
:
5887 case R_PPC64_GOT_TLSGD16_HA
:
5888 tls_type
= TLS_TLS
| TLS_GD
;
5891 case R_PPC64_GOT_TPREL16_DS
:
5892 case R_PPC64_GOT_TPREL16_LO_DS
:
5893 case R_PPC64_GOT_TPREL16_HI
:
5894 case R_PPC64_GOT_TPREL16_HA
:
5895 tls_type
= TLS_TLS
| TLS_TPREL
;
5898 case R_PPC64_GOT_DTPREL16_DS
:
5899 case R_PPC64_GOT_DTPREL16_LO_DS
:
5900 case R_PPC64_GOT_DTPREL16_HI
:
5901 case R_PPC64_GOT_DTPREL16_HA
:
5902 tls_type
= TLS_TLS
| TLS_DTPREL
;
5906 case R_PPC64_GOT16_DS
:
5907 case R_PPC64_GOT16_HA
:
5908 case R_PPC64_GOT16_HI
:
5909 case R_PPC64_GOT16_LO
:
5910 case R_PPC64_GOT16_LO_DS
:
5913 struct got_entry
*ent
;
5918 ent
= local_got_ents
[r_symndx
];
5920 for (; ent
!= NULL
; ent
= ent
->next
)
5921 if (ent
->addend
== rel
->r_addend
5922 && ent
->owner
== abfd
5923 && ent
->tls_type
== tls_type
)
5927 if (ent
->got
.refcount
> 0)
5928 ent
->got
.refcount
-= 1;
5932 case R_PPC64_PLT16_HA
:
5933 case R_PPC64_PLT16_HI
:
5934 case R_PPC64_PLT16_LO
:
5938 case R_PPC64_REL14_BRNTAKEN
:
5939 case R_PPC64_REL14_BRTAKEN
:
5943 struct plt_entry
*ent
;
5945 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5946 if (ent
->addend
== rel
->r_addend
)
5948 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5949 ent
->plt
.refcount
-= 1;
5960 /* The maximum size of .sfpr. */
5961 #define SFPR_MAX (218*4)
5963 struct sfpr_def_parms
5965 const char name
[12];
5966 unsigned char lo
, hi
;
5967 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5968 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5971 /* Auto-generate _save*, _rest* functions in .sfpr. */
5974 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5976 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5978 size_t len
= strlen (parm
->name
);
5979 bfd_boolean writing
= FALSE
;
5985 memcpy (sym
, parm
->name
, len
);
5988 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5990 struct elf_link_hash_entry
*h
;
5992 sym
[len
+ 0] = i
/ 10 + '0';
5993 sym
[len
+ 1] = i
% 10 + '0';
5994 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5998 h
->root
.type
= bfd_link_hash_defined
;
5999 h
->root
.u
.def
.section
= htab
->sfpr
;
6000 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
6003 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
6005 if (htab
->sfpr
->contents
== NULL
)
6007 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
6008 if (htab
->sfpr
->contents
== NULL
)
6014 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
6016 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
6018 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
6019 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6027 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6029 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6034 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6036 p
= savegpr0 (abfd
, p
, r
);
6037 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6039 bfd_put_32 (abfd
, BLR
, p
);
6044 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6046 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6051 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6053 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6055 p
= restgpr0 (abfd
, p
, r
);
6056 bfd_put_32 (abfd
, MTLR_R0
, p
);
6060 p
= restgpr0 (abfd
, p
, 30);
6061 p
= restgpr0 (abfd
, p
, 31);
6063 bfd_put_32 (abfd
, BLR
, p
);
6068 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6070 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6075 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6077 p
= savegpr1 (abfd
, p
, r
);
6078 bfd_put_32 (abfd
, BLR
, p
);
6083 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6085 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6090 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6092 p
= restgpr1 (abfd
, p
, r
);
6093 bfd_put_32 (abfd
, BLR
, p
);
6098 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6100 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6105 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6107 p
= savefpr (abfd
, p
, r
);
6108 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6110 bfd_put_32 (abfd
, BLR
, p
);
6115 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6117 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6122 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6124 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6126 p
= restfpr (abfd
, p
, r
);
6127 bfd_put_32 (abfd
, MTLR_R0
, p
);
6131 p
= restfpr (abfd
, p
, 30);
6132 p
= restfpr (abfd
, p
, 31);
6134 bfd_put_32 (abfd
, BLR
, p
);
6139 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6141 p
= savefpr (abfd
, p
, r
);
6142 bfd_put_32 (abfd
, BLR
, p
);
6147 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6149 p
= restfpr (abfd
, p
, r
);
6150 bfd_put_32 (abfd
, BLR
, p
);
6155 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6157 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6159 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6164 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6166 p
= savevr (abfd
, p
, r
);
6167 bfd_put_32 (abfd
, BLR
, p
);
6172 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6174 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6176 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6181 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6183 p
= restvr (abfd
, p
, r
);
6184 bfd_put_32 (abfd
, BLR
, p
);
6188 /* Called via elf_link_hash_traverse to transfer dynamic linking
6189 information on function code symbol entries to their corresponding
6190 function descriptor symbol entries. */
6193 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6195 struct bfd_link_info
*info
;
6196 struct ppc_link_hash_table
*htab
;
6197 struct plt_entry
*ent
;
6198 struct ppc_link_hash_entry
*fh
;
6199 struct ppc_link_hash_entry
*fdh
;
6200 bfd_boolean force_local
;
6202 fh
= (struct ppc_link_hash_entry
*) h
;
6203 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6206 if (fh
->elf
.root
.type
== bfd_link_hash_warning
)
6207 fh
= (struct ppc_link_hash_entry
*) fh
->elf
.root
.u
.i
.link
;
6210 htab
= ppc_hash_table (info
);
6214 /* Resolve undefined references to dot-symbols as the value
6215 in the function descriptor, if we have one in a regular object.
6216 This is to satisfy cases like ".quad .foo". Calls to functions
6217 in dynamic objects are handled elsewhere. */
6218 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6219 && fh
->was_undefined
6220 && (fdh
= defined_func_desc (fh
)) != NULL
6221 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6222 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6223 fdh
->elf
.root
.u
.def
.value
,
6224 &fh
->elf
.root
.u
.def
.section
,
6225 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6227 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6228 fh
->elf
.forced_local
= 1;
6229 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6230 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6233 /* If this is a function code symbol, transfer dynamic linking
6234 information to the function descriptor symbol. */
6238 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6239 if (ent
->plt
.refcount
> 0)
6242 || fh
->elf
.root
.root
.string
[0] != '.'
6243 || fh
->elf
.root
.root
.string
[1] == '\0')
6246 /* Find the corresponding function descriptor symbol. Create it
6247 as undefined if necessary. */
6249 fdh
= lookup_fdh (fh
, htab
);
6251 && !info
->executable
6252 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6253 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6255 fdh
= make_fdh (info
, fh
);
6260 /* Fake function descriptors are made undefweak. If the function
6261 code symbol is strong undefined, make the fake sym the same.
6262 If the function code symbol is defined, then force the fake
6263 descriptor local; We can't support overriding of symbols in a
6264 shared library on a fake descriptor. */
6268 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6270 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6272 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6273 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6275 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6276 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6278 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6283 && !fdh
->elf
.forced_local
6284 && (!info
->executable
6285 || fdh
->elf
.def_dynamic
6286 || fdh
->elf
.ref_dynamic
6287 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6288 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6290 if (fdh
->elf
.dynindx
== -1)
6291 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6293 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6294 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6295 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6296 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6297 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6299 move_plt_plist (fh
, fdh
);
6300 fdh
->elf
.needs_plt
= 1;
6302 fdh
->is_func_descriptor
= 1;
6307 /* Now that the info is on the function descriptor, clear the
6308 function code sym info. Any function code syms for which we
6309 don't have a definition in a regular file, we force local.
6310 This prevents a shared library from exporting syms that have
6311 been imported from another library. Function code syms that
6312 are really in the library we must leave global to prevent the
6313 linker dragging in a definition from a static library. */
6314 force_local
= (!fh
->elf
.def_regular
6316 || !fdh
->elf
.def_regular
6317 || fdh
->elf
.forced_local
);
6318 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6323 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6324 this hook to a) provide some gcc support functions, and b) transfer
6325 dynamic linking information gathered so far on function code symbol
6326 entries, to their corresponding function descriptor symbol entries. */
6329 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6330 struct bfd_link_info
*info
)
6332 struct ppc_link_hash_table
*htab
;
6334 const struct sfpr_def_parms funcs
[] =
6336 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6337 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6338 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6339 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6340 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6341 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6342 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6343 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6344 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6345 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6346 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6347 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6350 htab
= ppc_hash_table (info
);
6354 if (htab
->sfpr
== NULL
)
6355 /* We don't have any relocs. */
6358 /* Provide any missing _save* and _rest* functions. */
6359 htab
->sfpr
->size
= 0;
6360 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6361 if (!sfpr_define (info
, &funcs
[i
]))
6364 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6366 if (htab
->sfpr
->size
== 0)
6367 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6372 /* Adjust a symbol defined by a dynamic object and referenced by a
6373 regular object. The current definition is in some section of the
6374 dynamic object, but we're not including those sections. We have to
6375 change the definition to something the rest of the link can
6379 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6380 struct elf_link_hash_entry
*h
)
6382 struct ppc_link_hash_table
*htab
;
6385 htab
= ppc_hash_table (info
);
6389 /* Deal with function syms. */
6390 if (h
->type
== STT_FUNC
6391 || h
->type
== STT_GNU_IFUNC
6394 /* Clear procedure linkage table information for any symbol that
6395 won't need a .plt entry. */
6396 struct plt_entry
*ent
;
6397 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6398 if (ent
->plt
.refcount
> 0)
6401 || (h
->type
!= STT_GNU_IFUNC
6402 && (SYMBOL_CALLS_LOCAL (info
, h
)
6403 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6404 && h
->root
.type
== bfd_link_hash_undefweak
))))
6406 h
->plt
.plist
= NULL
;
6411 h
->plt
.plist
= NULL
;
6413 /* If this is a weak symbol, and there is a real definition, the
6414 processor independent code will have arranged for us to see the
6415 real definition first, and we can just use the same value. */
6416 if (h
->u
.weakdef
!= NULL
)
6418 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6419 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6420 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6421 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6422 if (ELIMINATE_COPY_RELOCS
)
6423 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6427 /* If we are creating a shared library, we must presume that the
6428 only references to the symbol are via the global offset table.
6429 For such cases we need not do anything here; the relocations will
6430 be handled correctly by relocate_section. */
6434 /* If there are no references to this symbol that do not use the
6435 GOT, we don't need to generate a copy reloc. */
6436 if (!h
->non_got_ref
)
6439 /* Don't generate a copy reloc for symbols defined in the executable. */
6440 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6443 if (ELIMINATE_COPY_RELOCS
)
6445 struct ppc_link_hash_entry
* eh
;
6446 struct ppc_dyn_relocs
*p
;
6448 eh
= (struct ppc_link_hash_entry
*) h
;
6449 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6451 s
= p
->sec
->output_section
;
6452 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6456 /* If we didn't find any dynamic relocs in read-only sections, then
6457 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6465 if (h
->plt
.plist
!= NULL
)
6467 /* We should never get here, but unfortunately there are versions
6468 of gcc out there that improperly (for this ABI) put initialized
6469 function pointers, vtable refs and suchlike in read-only
6470 sections. Allow them to proceed, but warn that this might
6471 break at runtime. */
6472 (*_bfd_error_handler
)
6473 (_("copy reloc against `%s' requires lazy plt linking; "
6474 "avoid setting LD_BIND_NOW=1 or upgrade gcc"),
6475 h
->root
.root
.string
);
6478 /* This is a reference to a symbol defined by a dynamic object which
6479 is not a function. */
6483 (*_bfd_error_handler
) (_("dynamic variable `%s' is zero size"),
6484 h
->root
.root
.string
);
6488 /* We must allocate the symbol in our .dynbss section, which will
6489 become part of the .bss section of the executable. There will be
6490 an entry for this symbol in the .dynsym section. The dynamic
6491 object will contain position independent code, so all references
6492 from the dynamic object to this symbol will go through the global
6493 offset table. The dynamic linker will use the .dynsym entry to
6494 determine the address it must put in the global offset table, so
6495 both the dynamic object and the regular object will refer to the
6496 same memory location for the variable. */
6498 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6499 to copy the initial value out of the dynamic object and into the
6500 runtime process image. We need to remember the offset into the
6501 .rela.bss section we are going to use. */
6502 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6504 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6510 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6513 /* If given a function descriptor symbol, hide both the function code
6514 sym and the descriptor. */
6516 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6517 struct elf_link_hash_entry
*h
,
6518 bfd_boolean force_local
)
6520 struct ppc_link_hash_entry
*eh
;
6521 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6523 eh
= (struct ppc_link_hash_entry
*) h
;
6524 if (eh
->is_func_descriptor
)
6526 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6531 struct ppc_link_hash_table
*htab
;
6534 /* We aren't supposed to use alloca in BFD because on
6535 systems which do not have alloca the version in libiberty
6536 calls xmalloc, which might cause the program to crash
6537 when it runs out of memory. This function doesn't have a
6538 return status, so there's no way to gracefully return an
6539 error. So cheat. We know that string[-1] can be safely
6540 accessed; It's either a string in an ELF string table,
6541 or allocated in an objalloc structure. */
6543 p
= eh
->elf
.root
.root
.string
- 1;
6546 htab
= ppc_hash_table (info
);
6550 fh
= (struct ppc_link_hash_entry
*)
6551 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6554 /* Unfortunately, if it so happens that the string we were
6555 looking for was allocated immediately before this string,
6556 then we overwrote the string terminator. That's the only
6557 reason the lookup should fail. */
6560 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6561 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6563 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6564 fh
= (struct ppc_link_hash_entry
*)
6565 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6574 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6579 get_sym_h (struct elf_link_hash_entry
**hp
,
6580 Elf_Internal_Sym
**symp
,
6582 unsigned char **tls_maskp
,
6583 Elf_Internal_Sym
**locsymsp
,
6584 unsigned long r_symndx
,
6587 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6589 if (r_symndx
>= symtab_hdr
->sh_info
)
6591 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6592 struct elf_link_hash_entry
*h
;
6594 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6595 h
= elf_follow_link (h
);
6603 if (symsecp
!= NULL
)
6605 asection
*symsec
= NULL
;
6606 if (h
->root
.type
== bfd_link_hash_defined
6607 || h
->root
.type
== bfd_link_hash_defweak
)
6608 symsec
= h
->root
.u
.def
.section
;
6612 if (tls_maskp
!= NULL
)
6614 struct ppc_link_hash_entry
*eh
;
6616 eh
= (struct ppc_link_hash_entry
*) h
;
6617 *tls_maskp
= &eh
->tls_mask
;
6622 Elf_Internal_Sym
*sym
;
6623 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6625 if (locsyms
== NULL
)
6627 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6628 if (locsyms
== NULL
)
6629 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6630 symtab_hdr
->sh_info
,
6631 0, NULL
, NULL
, NULL
);
6632 if (locsyms
== NULL
)
6634 *locsymsp
= locsyms
;
6636 sym
= locsyms
+ r_symndx
;
6644 if (symsecp
!= NULL
)
6645 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6647 if (tls_maskp
!= NULL
)
6649 struct got_entry
**lgot_ents
;
6650 unsigned char *tls_mask
;
6653 lgot_ents
= elf_local_got_ents (ibfd
);
6654 if (lgot_ents
!= NULL
)
6656 struct plt_entry
**local_plt
= (struct plt_entry
**)
6657 (lgot_ents
+ symtab_hdr
->sh_info
);
6658 unsigned char *lgot_masks
= (unsigned char *)
6659 (local_plt
+ symtab_hdr
->sh_info
);
6660 tls_mask
= &lgot_masks
[r_symndx
];
6662 *tls_maskp
= tls_mask
;
6668 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6669 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6670 type suitable for optimization, and 1 otherwise. */
6673 get_tls_mask (unsigned char **tls_maskp
,
6674 unsigned long *toc_symndx
,
6675 bfd_vma
*toc_addend
,
6676 Elf_Internal_Sym
**locsymsp
,
6677 const Elf_Internal_Rela
*rel
,
6680 unsigned long r_symndx
;
6682 struct elf_link_hash_entry
*h
;
6683 Elf_Internal_Sym
*sym
;
6687 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6688 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6691 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6693 || ppc64_elf_section_data (sec
) == NULL
6694 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6697 /* Look inside a TOC section too. */
6700 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6701 off
= h
->root
.u
.def
.value
;
6704 off
= sym
->st_value
;
6705 off
+= rel
->r_addend
;
6706 BFD_ASSERT (off
% 8 == 0);
6707 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6708 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6709 if (toc_symndx
!= NULL
)
6710 *toc_symndx
= r_symndx
;
6711 if (toc_addend
!= NULL
)
6712 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6713 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6715 if ((h
== NULL
|| is_static_defined (h
))
6716 && (next_r
== -1 || next_r
== -2))
6721 /* Adjust all global syms defined in opd sections. In gcc generated
6722 code for the old ABI, these will already have been done. */
6725 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6727 struct ppc_link_hash_entry
*eh
;
6729 struct _opd_sec_data
*opd
;
6731 if (h
->root
.type
== bfd_link_hash_indirect
)
6734 if (h
->root
.type
== bfd_link_hash_warning
)
6735 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
6737 if (h
->root
.type
!= bfd_link_hash_defined
6738 && h
->root
.type
!= bfd_link_hash_defweak
)
6741 eh
= (struct ppc_link_hash_entry
*) h
;
6742 if (eh
->adjust_done
)
6745 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6746 opd
= get_opd_info (sym_sec
);
6747 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6749 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6752 /* This entry has been deleted. */
6753 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6756 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6757 if (elf_discarded_section (dsec
))
6759 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6763 eh
->elf
.root
.u
.def
.value
= 0;
6764 eh
->elf
.root
.u
.def
.section
= dsec
;
6767 eh
->elf
.root
.u
.def
.value
+= adjust
;
6768 eh
->adjust_done
= 1;
6773 /* Handles decrementing dynamic reloc counts for the reloc specified by
6774 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6775 have already been determined. */
6778 dec_dynrel_count (bfd_vma r_info
,
6780 struct bfd_link_info
*info
,
6781 Elf_Internal_Sym
**local_syms
,
6782 struct elf_link_hash_entry
*h
,
6785 enum elf_ppc64_reloc_type r_type
;
6786 struct ppc_dyn_relocs
*p
;
6787 struct ppc_dyn_relocs
**pp
;
6789 /* Can this reloc be dynamic? This switch, and later tests here
6790 should be kept in sync with the code in check_relocs. */
6791 r_type
= ELF64_R_TYPE (r_info
);
6797 case R_PPC64_TPREL16
:
6798 case R_PPC64_TPREL16_LO
:
6799 case R_PPC64_TPREL16_HI
:
6800 case R_PPC64_TPREL16_HA
:
6801 case R_PPC64_TPREL16_DS
:
6802 case R_PPC64_TPREL16_LO_DS
:
6803 case R_PPC64_TPREL16_HIGHER
:
6804 case R_PPC64_TPREL16_HIGHERA
:
6805 case R_PPC64_TPREL16_HIGHEST
:
6806 case R_PPC64_TPREL16_HIGHESTA
:
6810 case R_PPC64_TPREL64
:
6811 case R_PPC64_DTPMOD64
:
6812 case R_PPC64_DTPREL64
:
6813 case R_PPC64_ADDR64
:
6817 case R_PPC64_ADDR14
:
6818 case R_PPC64_ADDR14_BRNTAKEN
:
6819 case R_PPC64_ADDR14_BRTAKEN
:
6820 case R_PPC64_ADDR16
:
6821 case R_PPC64_ADDR16_DS
:
6822 case R_PPC64_ADDR16_HA
:
6823 case R_PPC64_ADDR16_HI
:
6824 case R_PPC64_ADDR16_HIGHER
:
6825 case R_PPC64_ADDR16_HIGHERA
:
6826 case R_PPC64_ADDR16_HIGHEST
:
6827 case R_PPC64_ADDR16_HIGHESTA
:
6828 case R_PPC64_ADDR16_LO
:
6829 case R_PPC64_ADDR16_LO_DS
:
6830 case R_PPC64_ADDR24
:
6831 case R_PPC64_ADDR32
:
6832 case R_PPC64_UADDR16
:
6833 case R_PPC64_UADDR32
:
6834 case R_PPC64_UADDR64
:
6839 if (local_syms
!= NULL
)
6841 unsigned long r_symndx
;
6842 Elf_Internal_Sym
*sym
;
6843 bfd
*ibfd
= sec
->owner
;
6845 r_symndx
= ELF64_R_SYM (r_info
);
6846 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6851 && (must_be_dyn_reloc (info
, r_type
)
6854 || h
->root
.type
== bfd_link_hash_defweak
6855 || !h
->def_regular
))))
6856 || (ELIMINATE_COPY_RELOCS
6859 && (h
->root
.type
== bfd_link_hash_defweak
6860 || !h
->def_regular
)))
6866 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6869 if (sym_sec
!= NULL
)
6871 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6872 pp
= (struct ppc_dyn_relocs
**) vpp
;
6876 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6877 pp
= (struct ppc_dyn_relocs
**) vpp
;
6880 /* elf_gc_sweep may have already removed all dyn relocs associated
6881 with local syms for a given section. Don't report a dynreloc
6887 while ((p
= *pp
) != NULL
)
6891 if (!must_be_dyn_reloc (info
, r_type
))
6901 (*_bfd_error_handler
) (_("dynreloc miscount for %B, section %A"),
6903 bfd_set_error (bfd_error_bad_value
);
6907 /* Remove unused Official Procedure Descriptor entries. Currently we
6908 only remove those associated with functions in discarded link-once
6909 sections, or weakly defined functions that have been overridden. It
6910 would be possible to remove many more entries for statically linked
6914 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
6917 bfd_boolean some_edited
= FALSE
;
6918 asection
*need_pad
= NULL
;
6920 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6923 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6924 Elf_Internal_Shdr
*symtab_hdr
;
6925 Elf_Internal_Sym
*local_syms
;
6927 struct _opd_sec_data
*opd
;
6928 bfd_boolean need_edit
, add_aux_fields
;
6929 bfd_size_type cnt_16b
= 0;
6931 if (!is_ppc64_elf (ibfd
))
6934 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6935 if (sec
== NULL
|| sec
->size
== 0)
6938 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6941 if (sec
->output_section
== bfd_abs_section_ptr
)
6944 /* Look through the section relocs. */
6945 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6949 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6951 /* Read the relocations. */
6952 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6954 if (relstart
== NULL
)
6957 /* First run through the relocs to check they are sane, and to
6958 determine whether we need to edit this opd section. */
6962 relend
= relstart
+ sec
->reloc_count
;
6963 for (rel
= relstart
; rel
< relend
; )
6965 enum elf_ppc64_reloc_type r_type
;
6966 unsigned long r_symndx
;
6968 struct elf_link_hash_entry
*h
;
6969 Elf_Internal_Sym
*sym
;
6971 /* .opd contains a regular array of 16 or 24 byte entries. We're
6972 only interested in the reloc pointing to a function entry
6974 if (rel
->r_offset
!= offset
6975 || rel
+ 1 >= relend
6976 || (rel
+ 1)->r_offset
!= offset
+ 8)
6978 /* If someone messes with .opd alignment then after a
6979 "ld -r" we might have padding in the middle of .opd.
6980 Also, there's nothing to prevent someone putting
6981 something silly in .opd with the assembler. No .opd
6982 optimization for them! */
6984 (*_bfd_error_handler
)
6985 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6990 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6991 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6993 (*_bfd_error_handler
)
6994 (_("%B: unexpected reloc type %u in .opd section"),
7000 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7001 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7005 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
7007 const char *sym_name
;
7009 sym_name
= h
->root
.root
.string
;
7011 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
7014 (*_bfd_error_handler
)
7015 (_("%B: undefined sym `%s' in .opd section"),
7021 /* opd entries are always for functions defined in the
7022 current input bfd. If the symbol isn't defined in the
7023 input bfd, then we won't be using the function in this
7024 bfd; It must be defined in a linkonce section in another
7025 bfd, or is weak. It's also possible that we are
7026 discarding the function due to a linker script /DISCARD/,
7027 which we test for via the output_section. */
7028 if (sym_sec
->owner
!= ibfd
7029 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7034 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7036 if (sec
->size
== offset
+ 24)
7041 if (rel
== relend
&& sec
->size
== offset
+ 16)
7049 if (rel
->r_offset
== offset
+ 24)
7051 else if (rel
->r_offset
!= offset
+ 16)
7053 else if (rel
+ 1 < relend
7054 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7055 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7060 else if (rel
+ 2 < relend
7061 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7062 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7071 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7073 if (need_edit
|| add_aux_fields
)
7075 Elf_Internal_Rela
*write_rel
;
7076 Elf_Internal_Shdr
*rel_hdr
;
7077 bfd_byte
*rptr
, *wptr
;
7078 bfd_byte
*new_contents
;
7083 new_contents
= NULL
;
7084 amt
= sec
->size
* sizeof (long) / 8;
7085 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7086 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7087 if (opd
->adjust
== NULL
)
7089 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7091 /* This seems a waste of time as input .opd sections are all
7092 zeros as generated by gcc, but I suppose there's no reason
7093 this will always be so. We might start putting something in
7094 the third word of .opd entries. */
7095 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7098 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7103 if (local_syms
!= NULL
7104 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7106 if (elf_section_data (sec
)->relocs
!= relstart
)
7110 sec
->contents
= loc
;
7111 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7114 elf_section_data (sec
)->relocs
= relstart
;
7116 new_contents
= sec
->contents
;
7119 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7120 if (new_contents
== NULL
)
7124 wptr
= new_contents
;
7125 rptr
= sec
->contents
;
7127 write_rel
= relstart
;
7131 for (rel
= relstart
; rel
< relend
; rel
++)
7133 unsigned long r_symndx
;
7135 struct elf_link_hash_entry
*h
;
7136 Elf_Internal_Sym
*sym
;
7138 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7139 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7143 if (rel
->r_offset
== offset
)
7145 struct ppc_link_hash_entry
*fdh
= NULL
;
7147 /* See if the .opd entry is full 24 byte or
7148 16 byte (with fd_aux entry overlapped with next
7151 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7152 || (rel
+ 3 < relend
7153 && rel
[2].r_offset
== offset
+ 16
7154 && rel
[3].r_offset
== offset
+ 24
7155 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7156 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7160 && h
->root
.root
.string
[0] == '.')
7162 struct ppc_link_hash_table
*htab
;
7164 htab
= ppc_hash_table (info
);
7166 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7169 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7170 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7174 skip
= (sym_sec
->owner
!= ibfd
7175 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7178 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7180 /* Arrange for the function descriptor sym
7182 fdh
->elf
.root
.u
.def
.value
= 0;
7183 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7185 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7189 /* We'll be keeping this opd entry. */
7193 /* Redefine the function descriptor symbol to
7194 this location in the opd section. It is
7195 necessary to update the value here rather
7196 than using an array of adjustments as we do
7197 for local symbols, because various places
7198 in the generic ELF code use the value
7199 stored in u.def.value. */
7200 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7201 fdh
->adjust_done
= 1;
7204 /* Local syms are a bit tricky. We could
7205 tweak them as they can be cached, but
7206 we'd need to look through the local syms
7207 for the function descriptor sym which we
7208 don't have at the moment. So keep an
7209 array of adjustments. */
7210 opd
->adjust
[rel
->r_offset
/ 8]
7211 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7214 memcpy (wptr
, rptr
, opd_ent_size
);
7215 wptr
+= opd_ent_size
;
7216 if (add_aux_fields
&& opd_ent_size
== 16)
7218 memset (wptr
, '\0', 8);
7222 rptr
+= opd_ent_size
;
7223 offset
+= opd_ent_size
;
7229 && !info
->relocatable
7230 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7236 /* We need to adjust any reloc offsets to point to the
7237 new opd entries. While we're at it, we may as well
7238 remove redundant relocs. */
7239 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7240 if (write_rel
!= rel
)
7241 memcpy (write_rel
, rel
, sizeof (*rel
));
7246 sec
->size
= wptr
- new_contents
;
7247 sec
->reloc_count
= write_rel
- relstart
;
7250 free (sec
->contents
);
7251 sec
->contents
= new_contents
;
7254 /* Fudge the header size too, as this is used later in
7255 elf_bfd_final_link if we are emitting relocs. */
7256 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7257 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7260 else if (elf_section_data (sec
)->relocs
!= relstart
)
7263 if (local_syms
!= NULL
7264 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7266 if (!info
->keep_memory
)
7269 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7274 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7276 /* If we are doing a final link and the last .opd entry is just 16 byte
7277 long, add a 8 byte padding after it. */
7278 if (need_pad
!= NULL
&& !info
->relocatable
)
7282 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7284 BFD_ASSERT (need_pad
->size
> 0);
7286 p
= bfd_malloc (need_pad
->size
+ 8);
7290 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7291 p
, 0, need_pad
->size
))
7294 need_pad
->contents
= p
;
7295 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7299 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7303 need_pad
->contents
= p
;
7306 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7307 need_pad
->size
+= 8;
7313 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7316 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7317 int no_tls_get_addr_opt
,
7320 struct ppc_link_hash_table
*htab
;
7322 htab
= ppc_hash_table (info
);
7327 htab
->do_multi_toc
= 0;
7328 else if (!htab
->do_multi_toc
)
7331 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7332 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7333 FALSE
, FALSE
, TRUE
));
7334 /* Move dynamic linking info to the function descriptor sym. */
7335 if (htab
->tls_get_addr
!= NULL
)
7336 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7337 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7338 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7339 FALSE
, FALSE
, TRUE
));
7340 if (!no_tls_get_addr_opt
)
7342 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7344 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7345 FALSE
, FALSE
, TRUE
);
7347 func_desc_adjust (opt
, info
);
7348 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7349 FALSE
, FALSE
, TRUE
);
7351 && (opt_fd
->root
.type
== bfd_link_hash_defined
7352 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7354 /* If glibc supports an optimized __tls_get_addr call stub,
7355 signalled by the presence of __tls_get_addr_opt, and we'll
7356 be calling __tls_get_addr via a plt call stub, then
7357 make __tls_get_addr point to __tls_get_addr_opt. */
7358 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7359 if (htab
->elf
.dynamic_sections_created
7361 && (tga_fd
->type
== STT_FUNC
7362 || tga_fd
->needs_plt
)
7363 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7364 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7365 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7367 struct plt_entry
*ent
;
7369 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7370 if (ent
->plt
.refcount
> 0)
7374 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7375 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7376 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7377 if (opt_fd
->dynindx
!= -1)
7379 /* Use __tls_get_addr_opt in dynamic relocations. */
7380 opt_fd
->dynindx
= -1;
7381 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7382 opt_fd
->dynstr_index
);
7383 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7386 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7387 tga
= &htab
->tls_get_addr
->elf
;
7388 if (opt
!= NULL
&& tga
!= NULL
)
7390 tga
->root
.type
= bfd_link_hash_indirect
;
7391 tga
->root
.u
.i
.link
= &opt
->root
;
7392 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7393 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7395 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7397 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7398 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7399 if (htab
->tls_get_addr
!= NULL
)
7401 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7402 htab
->tls_get_addr
->is_func
= 1;
7408 no_tls_get_addr_opt
= TRUE
;
7410 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7411 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7414 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7418 branch_reloc_hash_match (const bfd
*ibfd
,
7419 const Elf_Internal_Rela
*rel
,
7420 const struct ppc_link_hash_entry
*hash1
,
7421 const struct ppc_link_hash_entry
*hash2
)
7423 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7424 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7425 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7427 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7429 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7430 struct elf_link_hash_entry
*h
;
7432 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7433 h
= elf_follow_link (h
);
7434 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7440 /* Run through all the TLS relocs looking for optimization
7441 opportunities. The linker has been hacked (see ppc64elf.em) to do
7442 a preliminary section layout so that we know the TLS segment
7443 offsets. We can't optimize earlier because some optimizations need
7444 to know the tp offset, and we need to optimize before allocating
7445 dynamic relocations. */
7448 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7452 struct ppc_link_hash_table
*htab
;
7455 if (info
->relocatable
|| !info
->executable
)
7458 htab
= ppc_hash_table (info
);
7462 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7464 Elf_Internal_Sym
*locsyms
= NULL
;
7465 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7466 unsigned char *toc_ref
= NULL
;
7468 /* Look at all the sections for this file. Make two passes over
7469 the relocs. On the first pass, mark toc entries involved
7470 with tls relocs, and check that tls relocs involved in
7471 setting up a tls_get_addr call are indeed followed by such a
7472 call. If they are not, exclude them from the optimizations
7473 done on the second pass. */
7474 for (pass
= 0; pass
< 2; ++pass
)
7475 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7476 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7478 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7480 /* Read the relocations. */
7481 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7483 if (relstart
== NULL
)
7486 relend
= relstart
+ sec
->reloc_count
;
7487 for (rel
= relstart
; rel
< relend
; rel
++)
7489 enum elf_ppc64_reloc_type r_type
;
7490 unsigned long r_symndx
;
7491 struct elf_link_hash_entry
*h
;
7492 Elf_Internal_Sym
*sym
;
7494 unsigned char *tls_mask
;
7495 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7497 bfd_boolean ok_tprel
, is_local
;
7498 long toc_ref_index
= 0;
7499 int expecting_tls_get_addr
= 0;
7501 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7502 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7506 if (elf_section_data (sec
)->relocs
!= relstart
)
7508 if (toc_ref
!= NULL
)
7511 && (elf_symtab_hdr (ibfd
).contents
7512 != (unsigned char *) locsyms
))
7519 if (h
->root
.type
== bfd_link_hash_defined
7520 || h
->root
.type
== bfd_link_hash_defweak
)
7521 value
= h
->root
.u
.def
.value
;
7522 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7528 /* Symbols referenced by TLS relocs must be of type
7529 STT_TLS. So no need for .opd local sym adjust. */
7530 value
= sym
->st_value
;
7539 && h
->root
.type
== bfd_link_hash_undefweak
)
7543 value
+= sym_sec
->output_offset
;
7544 value
+= sym_sec
->output_section
->vma
;
7545 value
-= htab
->elf
.tls_sec
->vma
;
7546 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7547 < (bfd_vma
) 1 << 32);
7551 r_type
= ELF64_R_TYPE (rel
->r_info
);
7554 case R_PPC64_GOT_TLSLD16
:
7555 case R_PPC64_GOT_TLSLD16_LO
:
7556 expecting_tls_get_addr
= 1;
7559 case R_PPC64_GOT_TLSLD16_HI
:
7560 case R_PPC64_GOT_TLSLD16_HA
:
7561 /* These relocs should never be against a symbol
7562 defined in a shared lib. Leave them alone if
7563 that turns out to be the case. */
7570 tls_type
= TLS_TLS
| TLS_LD
;
7573 case R_PPC64_GOT_TLSGD16
:
7574 case R_PPC64_GOT_TLSGD16_LO
:
7575 expecting_tls_get_addr
= 1;
7578 case R_PPC64_GOT_TLSGD16_HI
:
7579 case R_PPC64_GOT_TLSGD16_HA
:
7585 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7587 tls_type
= TLS_TLS
| TLS_GD
;
7590 case R_PPC64_GOT_TPREL16_DS
:
7591 case R_PPC64_GOT_TPREL16_LO_DS
:
7592 case R_PPC64_GOT_TPREL16_HI
:
7593 case R_PPC64_GOT_TPREL16_HA
:
7598 tls_clear
= TLS_TPREL
;
7599 tls_type
= TLS_TLS
| TLS_TPREL
;
7605 case R_PPC64_TOC16_LO
:
7609 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7612 /* Mark this toc entry as referenced by a TLS
7613 code sequence. We can do that now in the
7614 case of R_PPC64_TLS, and after checking for
7615 tls_get_addr for the TOC16 relocs. */
7616 if (toc_ref
== NULL
)
7618 toc_ref
= bfd_zmalloc (toc
->size
/ 8);
7619 if (toc_ref
== NULL
)
7623 value
= h
->root
.u
.def
.value
;
7625 value
= sym
->st_value
;
7626 value
+= rel
->r_addend
;
7627 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7628 toc_ref_index
= value
/ 8;
7629 if (r_type
== R_PPC64_TLS
7630 || r_type
== R_PPC64_TLSGD
7631 || r_type
== R_PPC64_TLSLD
)
7633 toc_ref
[toc_ref_index
] = 1;
7637 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7642 expecting_tls_get_addr
= 2;
7645 case R_PPC64_TPREL64
:
7649 || !toc_ref
[rel
->r_offset
/ 8])
7654 tls_set
= TLS_EXPLICIT
;
7655 tls_clear
= TLS_TPREL
;
7660 case R_PPC64_DTPMOD64
:
7664 || !toc_ref
[rel
->r_offset
/ 8])
7666 if (rel
+ 1 < relend
7668 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7669 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7673 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7676 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7685 tls_set
= TLS_EXPLICIT
;
7696 if (!expecting_tls_get_addr
7697 || !sec
->has_tls_get_addr_call
)
7700 if (rel
+ 1 < relend
7701 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7703 htab
->tls_get_addr_fd
))
7705 if (expecting_tls_get_addr
== 2)
7707 /* Check for toc tls entries. */
7708 unsigned char *toc_tls
;
7711 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7716 if (retval
> 1 && toc_tls
!= NULL
)
7717 toc_ref
[toc_ref_index
] = 1;
7722 if (expecting_tls_get_addr
!= 1)
7725 /* Uh oh, we didn't find the expected call. We
7726 could just mark this symbol to exclude it
7727 from tls optimization but it's safer to skip
7728 the entire section. */
7729 sec
->has_tls_reloc
= 0;
7733 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7735 struct plt_entry
*ent
;
7736 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7739 if (ent
->addend
== 0)
7741 if (ent
->plt
.refcount
> 0)
7743 ent
->plt
.refcount
-= 1;
7744 expecting_tls_get_addr
= 0;
7750 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7752 struct plt_entry
*ent
;
7753 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7756 if (ent
->addend
== 0)
7758 if (ent
->plt
.refcount
> 0)
7759 ent
->plt
.refcount
-= 1;
7767 if ((tls_set
& TLS_EXPLICIT
) == 0)
7769 struct got_entry
*ent
;
7771 /* Adjust got entry for this reloc. */
7775 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7777 for (; ent
!= NULL
; ent
= ent
->next
)
7778 if (ent
->addend
== rel
->r_addend
7779 && ent
->owner
== ibfd
7780 && ent
->tls_type
== tls_type
)
7787 /* We managed to get rid of a got entry. */
7788 if (ent
->got
.refcount
> 0)
7789 ent
->got
.refcount
-= 1;
7794 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7795 we'll lose one or two dyn relocs. */
7796 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7800 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7802 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7808 *tls_mask
|= tls_set
;
7809 *tls_mask
&= ~tls_clear
;
7812 if (elf_section_data (sec
)->relocs
!= relstart
)
7816 if (toc_ref
!= NULL
)
7820 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7822 if (!info
->keep_memory
)
7825 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7831 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7832 the values of any global symbols in a toc section that has been
7833 edited. Globals in toc sections should be a rarity, so this function
7834 sets a flag if any are found in toc sections other than the one just
7835 edited, so that futher hash table traversals can be avoided. */
7837 struct adjust_toc_info
7840 unsigned long *skip
;
7841 bfd_boolean global_toc_syms
;
7844 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7847 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7849 struct ppc_link_hash_entry
*eh
;
7850 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7853 if (h
->root
.type
== bfd_link_hash_indirect
)
7856 if (h
->root
.type
== bfd_link_hash_warning
)
7857 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
7859 if (h
->root
.type
!= bfd_link_hash_defined
7860 && h
->root
.type
!= bfd_link_hash_defweak
)
7863 eh
= (struct ppc_link_hash_entry
*) h
;
7864 if (eh
->adjust_done
)
7867 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7869 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7870 i
= toc_inf
->toc
->rawsize
>> 3;
7872 i
= eh
->elf
.root
.u
.def
.value
>> 3;
7874 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
7876 (*_bfd_error_handler
)
7877 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
7880 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
7881 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
7884 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
7885 eh
->adjust_done
= 1;
7887 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7888 toc_inf
->global_toc_syms
= TRUE
;
7893 /* Examine all relocs referencing .toc sections in order to remove
7894 unused .toc entries. */
7897 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7900 struct adjust_toc_info toc_inf
;
7901 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7903 htab
->do_toc_opt
= 1;
7904 toc_inf
.global_toc_syms
= TRUE
;
7905 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7907 asection
*toc
, *sec
;
7908 Elf_Internal_Shdr
*symtab_hdr
;
7909 Elf_Internal_Sym
*local_syms
;
7910 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
7911 unsigned long *skip
, *drop
;
7912 unsigned char *used
;
7913 unsigned char *keep
, last
, some_unused
;
7915 if (!is_ppc64_elf (ibfd
))
7918 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7921 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7922 || elf_discarded_section (toc
))
7927 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7929 /* Look at sections dropped from the final link. */
7932 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7934 if (sec
->reloc_count
== 0
7935 || !elf_discarded_section (sec
)
7936 || get_opd_info (sec
)
7937 || (sec
->flags
& SEC_ALLOC
) == 0
7938 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7941 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7942 if (relstart
== NULL
)
7945 /* Run through the relocs to see which toc entries might be
7947 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7949 enum elf_ppc64_reloc_type r_type
;
7950 unsigned long r_symndx
;
7952 struct elf_link_hash_entry
*h
;
7953 Elf_Internal_Sym
*sym
;
7956 r_type
= ELF64_R_TYPE (rel
->r_info
);
7963 case R_PPC64_TOC16_LO
:
7964 case R_PPC64_TOC16_HI
:
7965 case R_PPC64_TOC16_HA
:
7966 case R_PPC64_TOC16_DS
:
7967 case R_PPC64_TOC16_LO_DS
:
7971 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7972 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7980 val
= h
->root
.u
.def
.value
;
7982 val
= sym
->st_value
;
7983 val
+= rel
->r_addend
;
7985 if (val
>= toc
->size
)
7988 /* Anything in the toc ought to be aligned to 8 bytes.
7989 If not, don't mark as unused. */
7995 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8000 skip
[val
>> 3] = ref_from_discarded
;
8003 if (elf_section_data (sec
)->relocs
!= relstart
)
8007 /* For largetoc loads of address constants, we can convert
8008 . addis rx,2,addr@got@ha
8009 . ld ry,addr@got@l(rx)
8011 . addis rx,2,addr@toc@ha
8012 . addi ry,rx,addr@toc@l
8013 when addr is within 2G of the toc pointer. This then means
8014 that the word storing "addr" in the toc is no longer needed. */
8016 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8017 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8018 && toc
->reloc_count
!= 0)
8020 /* Read toc relocs. */
8021 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8023 if (toc_relocs
== NULL
)
8026 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8028 enum elf_ppc64_reloc_type r_type
;
8029 unsigned long r_symndx
;
8031 struct elf_link_hash_entry
*h
;
8032 Elf_Internal_Sym
*sym
;
8035 r_type
= ELF64_R_TYPE (rel
->r_info
);
8036 if (r_type
!= R_PPC64_ADDR64
)
8039 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8040 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8045 || elf_discarded_section (sym_sec
))
8048 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8053 if (h
->type
== STT_GNU_IFUNC
)
8055 val
= h
->root
.u
.def
.value
;
8059 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8061 val
= sym
->st_value
;
8063 val
+= rel
->r_addend
;
8064 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8066 /* We don't yet know the exact toc pointer value, but we
8067 know it will be somewhere in the toc section. Don't
8068 optimize if the difference from any possible toc
8069 pointer is outside [ff..f80008000, 7fff7fff]. */
8070 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8071 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8074 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8075 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8080 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8085 skip
[rel
->r_offset
>> 3]
8086 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8093 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8097 if (local_syms
!= NULL
8098 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8102 && elf_section_data (sec
)->relocs
!= relstart
)
8104 if (toc_relocs
!= NULL
8105 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8112 /* Now check all kept sections that might reference the toc.
8113 Check the toc itself last. */
8114 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8117 sec
= (sec
== toc
? NULL
8118 : sec
->next
== NULL
? toc
8119 : sec
->next
== toc
&& toc
->next
? toc
->next
8124 if (sec
->reloc_count
== 0
8125 || elf_discarded_section (sec
)
8126 || get_opd_info (sec
)
8127 || (sec
->flags
& SEC_ALLOC
) == 0
8128 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8131 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8133 if (relstart
== NULL
)
8136 /* Mark toc entries referenced as used. */
8139 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8141 enum elf_ppc64_reloc_type r_type
;
8142 unsigned long r_symndx
;
8144 struct elf_link_hash_entry
*h
;
8145 Elf_Internal_Sym
*sym
;
8148 r_type
= ELF64_R_TYPE (rel
->r_info
);
8152 case R_PPC64_TOC16_LO
:
8153 case R_PPC64_TOC16_HI
:
8154 case R_PPC64_TOC16_HA
:
8155 case R_PPC64_TOC16_DS
:
8156 case R_PPC64_TOC16_LO_DS
:
8157 /* In case we're taking addresses of toc entries. */
8158 case R_PPC64_ADDR64
:
8165 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8166 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8177 val
= h
->root
.u
.def
.value
;
8179 val
= sym
->st_value
;
8180 val
+= rel
->r_addend
;
8182 if (val
>= toc
->size
)
8185 if ((skip
[val
>> 3] & can_optimize
) != 0)
8192 case R_PPC64_TOC16_HA
:
8195 case R_PPC64_TOC16_LO_DS
:
8196 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8197 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8199 if ((opc
& (0x3f << 2)) == (58u << 2))
8204 /* Wrong sort of reloc, or not a ld. We may
8205 as well clear ref_from_discarded too. */
8210 /* For the toc section, we only mark as used if
8211 this entry itself isn't unused. */
8214 && (used
[rel
->r_offset
>> 3]
8215 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8216 /* Do all the relocs again, to catch reference
8224 if (elf_section_data (sec
)->relocs
!= relstart
)
8228 /* Merge the used and skip arrays. Assume that TOC
8229 doublewords not appearing as either used or unused belong
8230 to to an entry more than one doubleword in size. */
8231 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8232 drop
< skip
+ (toc
->size
+ 7) / 8;
8237 *drop
&= ~ref_from_discarded
;
8238 if ((*drop
& can_optimize
) != 0)
8245 last
= ref_from_discarded
;
8255 bfd_byte
*contents
, *src
;
8257 Elf_Internal_Sym
*sym
;
8258 bfd_boolean local_toc_syms
= FALSE
;
8260 /* Shuffle the toc contents, and at the same time convert the
8261 skip array from booleans into offsets. */
8262 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8265 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8267 for (src
= contents
, off
= 0, drop
= skip
;
8268 src
< contents
+ toc
->size
;
8271 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8276 memcpy (src
- off
, src
, 8);
8280 toc
->rawsize
= toc
->size
;
8281 toc
->size
= src
- contents
- off
;
8283 /* Adjust addends for relocs against the toc section sym,
8284 and optimize any accesses we can. */
8285 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8287 if (sec
->reloc_count
== 0
8288 || elf_discarded_section (sec
))
8291 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8293 if (relstart
== NULL
)
8296 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8298 enum elf_ppc64_reloc_type r_type
;
8299 unsigned long r_symndx
;
8301 struct elf_link_hash_entry
*h
;
8304 r_type
= ELF64_R_TYPE (rel
->r_info
);
8311 case R_PPC64_TOC16_LO
:
8312 case R_PPC64_TOC16_HI
:
8313 case R_PPC64_TOC16_HA
:
8314 case R_PPC64_TOC16_DS
:
8315 case R_PPC64_TOC16_LO_DS
:
8316 case R_PPC64_ADDR64
:
8320 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8321 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8329 val
= h
->root
.u
.def
.value
;
8332 val
= sym
->st_value
;
8334 local_toc_syms
= TRUE
;
8337 val
+= rel
->r_addend
;
8339 if (val
> toc
->rawsize
)
8341 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8343 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8345 Elf_Internal_Rela
*tocrel
8346 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8347 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8351 case R_PPC64_TOC16_HA
:
8352 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8355 case R_PPC64_TOC16_LO_DS
:
8356 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8362 rel
->r_addend
= tocrel
->r_addend
;
8363 elf_section_data (sec
)->relocs
= relstart
;
8367 if (h
!= NULL
|| sym
->st_value
!= 0)
8370 rel
->r_addend
-= skip
[val
>> 3];
8371 elf_section_data (sec
)->relocs
= relstart
;
8374 if (elf_section_data (sec
)->relocs
!= relstart
)
8378 /* We shouldn't have local or global symbols defined in the TOC,
8379 but handle them anyway. */
8380 if (local_syms
!= NULL
)
8381 for (sym
= local_syms
;
8382 sym
< local_syms
+ symtab_hdr
->sh_info
;
8384 if (sym
->st_value
!= 0
8385 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8389 if (sym
->st_value
> toc
->rawsize
)
8390 i
= toc
->rawsize
>> 3;
8392 i
= sym
->st_value
>> 3;
8394 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8397 (*_bfd_error_handler
)
8398 (_("%s defined on removed toc entry"),
8399 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8402 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8403 sym
->st_value
= (bfd_vma
) i
<< 3;
8406 sym
->st_value
-= skip
[i
];
8407 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8410 /* Adjust any global syms defined in this toc input section. */
8411 if (toc_inf
.global_toc_syms
)
8414 toc_inf
.skip
= skip
;
8415 toc_inf
.global_toc_syms
= FALSE
;
8416 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8420 if (toc
->reloc_count
!= 0)
8422 Elf_Internal_Shdr
*rel_hdr
;
8423 Elf_Internal_Rela
*wrel
;
8426 /* Remove unused toc relocs, and adjust those we keep. */
8428 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8429 if ((skip
[rel
->r_offset
>> 3]
8430 & (ref_from_discarded
| can_optimize
)) == 0)
8432 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8433 wrel
->r_info
= rel
->r_info
;
8434 wrel
->r_addend
= rel
->r_addend
;
8437 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8438 &local_syms
, NULL
, NULL
))
8441 elf_section_data (toc
)->relocs
= toc_relocs
;
8442 toc
->reloc_count
= wrel
- toc_relocs
;
8443 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8444 sz
= rel_hdr
->sh_entsize
;
8445 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8448 else if (elf_section_data (toc
)->relocs
!= toc_relocs
)
8451 if (local_syms
!= NULL
8452 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8454 if (!info
->keep_memory
)
8457 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8465 /* Return true iff input section I references the TOC using
8466 instructions limited to +/-32k offsets. */
8469 ppc64_elf_has_small_toc_reloc (asection
*i
)
8471 return (is_ppc64_elf (i
->owner
)
8472 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8475 /* Allocate space for one GOT entry. */
8478 allocate_got (struct elf_link_hash_entry
*h
,
8479 struct bfd_link_info
*info
,
8480 struct got_entry
*gent
)
8482 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8484 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8485 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8487 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8488 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8489 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8491 gent
->got
.offset
= got
->size
;
8492 got
->size
+= entsize
;
8494 dyn
= htab
->elf
.dynamic_sections_created
;
8496 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8497 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8498 || h
->root
.type
!= bfd_link_hash_undefweak
))
8500 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8501 relgot
->size
+= rentsize
;
8503 else if (h
->type
== STT_GNU_IFUNC
)
8505 asection
*relgot
= htab
->reliplt
;
8506 relgot
->size
+= rentsize
;
8507 htab
->got_reli_size
+= rentsize
;
8511 /* This function merges got entries in the same toc group. */
8514 merge_got_entries (struct got_entry
**pent
)
8516 struct got_entry
*ent
, *ent2
;
8518 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8519 if (!ent
->is_indirect
)
8520 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8521 if (!ent2
->is_indirect
8522 && ent2
->addend
== ent
->addend
8523 && ent2
->tls_type
== ent
->tls_type
8524 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8526 ent2
->is_indirect
= TRUE
;
8527 ent2
->got
.ent
= ent
;
8531 /* Allocate space in .plt, .got and associated reloc sections for
8535 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8537 struct bfd_link_info
*info
;
8538 struct ppc_link_hash_table
*htab
;
8540 struct ppc_link_hash_entry
*eh
;
8541 struct ppc_dyn_relocs
*p
;
8542 struct got_entry
**pgent
, *gent
;
8544 if (h
->root
.type
== bfd_link_hash_indirect
)
8547 if (h
->root
.type
== bfd_link_hash_warning
)
8548 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8550 info
= (struct bfd_link_info
*) inf
;
8551 htab
= ppc_hash_table (info
);
8555 if ((htab
->elf
.dynamic_sections_created
8557 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8558 || h
->type
== STT_GNU_IFUNC
)
8560 struct plt_entry
*pent
;
8561 bfd_boolean doneone
= FALSE
;
8562 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8563 if (pent
->plt
.refcount
> 0)
8565 if (!htab
->elf
.dynamic_sections_created
8566 || h
->dynindx
== -1)
8569 pent
->plt
.offset
= s
->size
;
8570 s
->size
+= PLT_ENTRY_SIZE
;
8575 /* If this is the first .plt entry, make room for the special
8579 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8581 pent
->plt
.offset
= s
->size
;
8583 /* Make room for this entry. */
8584 s
->size
+= PLT_ENTRY_SIZE
;
8586 /* Make room for the .glink code. */
8589 s
->size
+= GLINK_CALL_STUB_SIZE
;
8590 /* We need bigger stubs past index 32767. */
8591 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8595 /* We also need to make an entry in the .rela.plt section. */
8598 s
->size
+= sizeof (Elf64_External_Rela
);
8602 pent
->plt
.offset
= (bfd_vma
) -1;
8605 h
->plt
.plist
= NULL
;
8611 h
->plt
.plist
= NULL
;
8615 eh
= (struct ppc_link_hash_entry
*) h
;
8616 /* Run through the TLS GD got entries first if we're changing them
8618 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8619 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8620 if (gent
->got
.refcount
> 0
8621 && (gent
->tls_type
& TLS_GD
) != 0)
8623 /* This was a GD entry that has been converted to TPREL. If
8624 there happens to be a TPREL entry we can use that one. */
8625 struct got_entry
*ent
;
8626 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8627 if (ent
->got
.refcount
> 0
8628 && (ent
->tls_type
& TLS_TPREL
) != 0
8629 && ent
->addend
== gent
->addend
8630 && ent
->owner
== gent
->owner
)
8632 gent
->got
.refcount
= 0;
8636 /* If not, then we'll be using our own TPREL entry. */
8637 if (gent
->got
.refcount
!= 0)
8638 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8641 /* Remove any list entry that won't generate a word in the GOT before
8642 we call merge_got_entries. Otherwise we risk merging to empty
8644 pgent
= &h
->got
.glist
;
8645 while ((gent
= *pgent
) != NULL
)
8646 if (gent
->got
.refcount
> 0)
8648 if ((gent
->tls_type
& TLS_LD
) != 0
8651 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8652 *pgent
= gent
->next
;
8655 pgent
= &gent
->next
;
8658 *pgent
= gent
->next
;
8660 if (!htab
->do_multi_toc
)
8661 merge_got_entries (&h
->got
.glist
);
8663 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8664 if (!gent
->is_indirect
)
8666 /* Make sure this symbol is output as a dynamic symbol.
8667 Undefined weak syms won't yet be marked as dynamic,
8668 nor will all TLS symbols. */
8669 if (h
->dynindx
== -1
8671 && h
->type
!= STT_GNU_IFUNC
8672 && htab
->elf
.dynamic_sections_created
)
8674 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8678 if (!is_ppc64_elf (gent
->owner
))
8681 allocate_got (h
, info
, gent
);
8684 if (eh
->dyn_relocs
== NULL
8685 || (!htab
->elf
.dynamic_sections_created
8686 && h
->type
!= STT_GNU_IFUNC
))
8689 /* In the shared -Bsymbolic case, discard space allocated for
8690 dynamic pc-relative relocs against symbols which turn out to be
8691 defined in regular objects. For the normal shared case, discard
8692 space for relocs that have become local due to symbol visibility
8697 /* Relocs that use pc_count are those that appear on a call insn,
8698 or certain REL relocs (see must_be_dyn_reloc) that can be
8699 generated via assembly. We want calls to protected symbols to
8700 resolve directly to the function rather than going via the plt.
8701 If people want function pointer comparisons to work as expected
8702 then they should avoid writing weird assembly. */
8703 if (SYMBOL_CALLS_LOCAL (info
, h
))
8705 struct ppc_dyn_relocs
**pp
;
8707 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8709 p
->count
-= p
->pc_count
;
8718 /* Also discard relocs on undefined weak syms with non-default
8720 if (eh
->dyn_relocs
!= NULL
8721 && h
->root
.type
== bfd_link_hash_undefweak
)
8723 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8724 eh
->dyn_relocs
= NULL
;
8726 /* Make sure this symbol is output as a dynamic symbol.
8727 Undefined weak syms won't yet be marked as dynamic. */
8728 else if (h
->dynindx
== -1
8729 && !h
->forced_local
)
8731 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8736 else if (h
->type
== STT_GNU_IFUNC
)
8738 if (!h
->non_got_ref
)
8739 eh
->dyn_relocs
= NULL
;
8741 else if (ELIMINATE_COPY_RELOCS
)
8743 /* For the non-shared case, discard space for relocs against
8744 symbols which turn out to need copy relocs or are not
8750 /* Make sure this symbol is output as a dynamic symbol.
8751 Undefined weak syms won't yet be marked as dynamic. */
8752 if (h
->dynindx
== -1
8753 && !h
->forced_local
)
8755 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8759 /* If that succeeded, we know we'll be keeping all the
8761 if (h
->dynindx
!= -1)
8765 eh
->dyn_relocs
= NULL
;
8770 /* Finally, allocate space. */
8771 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8773 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8774 if (!htab
->elf
.dynamic_sections_created
)
8775 sreloc
= htab
->reliplt
;
8776 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8782 /* Find any dynamic relocs that apply to read-only sections. */
8785 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8787 struct ppc_link_hash_entry
*eh
;
8788 struct ppc_dyn_relocs
*p
;
8790 if (h
->root
.type
== bfd_link_hash_warning
)
8791 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
8793 eh
= (struct ppc_link_hash_entry
*) h
;
8794 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8796 asection
*s
= p
->sec
->output_section
;
8798 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8800 struct bfd_link_info
*info
= inf
;
8802 info
->flags
|= DF_TEXTREL
;
8804 /* Not an error, just cut short the traversal. */
8811 /* Set the sizes of the dynamic sections. */
8814 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8815 struct bfd_link_info
*info
)
8817 struct ppc_link_hash_table
*htab
;
8822 struct got_entry
*first_tlsld
;
8824 htab
= ppc_hash_table (info
);
8828 dynobj
= htab
->elf
.dynobj
;
8832 if (htab
->elf
.dynamic_sections_created
)
8834 /* Set the contents of the .interp section to the interpreter. */
8835 if (info
->executable
)
8837 s
= bfd_get_section_by_name (dynobj
, ".interp");
8840 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8841 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8845 /* Set up .got offsets for local syms, and space for local dynamic
8847 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8849 struct got_entry
**lgot_ents
;
8850 struct got_entry
**end_lgot_ents
;
8851 struct plt_entry
**local_plt
;
8852 struct plt_entry
**end_local_plt
;
8853 unsigned char *lgot_masks
;
8854 bfd_size_type locsymcount
;
8855 Elf_Internal_Shdr
*symtab_hdr
;
8858 if (!is_ppc64_elf (ibfd
))
8861 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8863 struct ppc_dyn_relocs
*p
;
8865 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8867 if (!bfd_is_abs_section (p
->sec
)
8868 && bfd_is_abs_section (p
->sec
->output_section
))
8870 /* Input section has been discarded, either because
8871 it is a copy of a linkonce section or due to
8872 linker script /DISCARD/, so we'll be discarding
8875 else if (p
->count
!= 0)
8877 srel
= elf_section_data (p
->sec
)->sreloc
;
8878 if (!htab
->elf
.dynamic_sections_created
)
8879 srel
= htab
->reliplt
;
8880 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8881 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8882 info
->flags
|= DF_TEXTREL
;
8887 lgot_ents
= elf_local_got_ents (ibfd
);
8891 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8892 locsymcount
= symtab_hdr
->sh_info
;
8893 end_lgot_ents
= lgot_ents
+ locsymcount
;
8894 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8895 end_local_plt
= local_plt
+ locsymcount
;
8896 lgot_masks
= (unsigned char *) end_local_plt
;
8897 s
= ppc64_elf_tdata (ibfd
)->got
;
8898 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8899 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8901 struct got_entry
**pent
, *ent
;
8904 while ((ent
= *pent
) != NULL
)
8905 if (ent
->got
.refcount
> 0)
8907 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8909 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8914 unsigned int num
= 1;
8915 ent
->got
.offset
= s
->size
;
8916 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8920 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8921 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
8924 += num
* sizeof (Elf64_External_Rela
);
8926 += num
* sizeof (Elf64_External_Rela
);
8935 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8936 for (; local_plt
< end_local_plt
; ++local_plt
)
8938 struct plt_entry
*ent
;
8940 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
8941 if (ent
->plt
.refcount
> 0)
8944 ent
->plt
.offset
= s
->size
;
8945 s
->size
+= PLT_ENTRY_SIZE
;
8947 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
8950 ent
->plt
.offset
= (bfd_vma
) -1;
8954 /* Allocate global sym .plt and .got entries, and space for global
8955 sym dynamic relocs. */
8956 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8959 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8961 struct got_entry
*ent
;
8963 if (!is_ppc64_elf (ibfd
))
8966 ent
= ppc64_tlsld_got (ibfd
);
8967 if (ent
->got
.refcount
> 0)
8969 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
8971 ent
->is_indirect
= TRUE
;
8972 ent
->got
.ent
= first_tlsld
;
8976 if (first_tlsld
== NULL
)
8978 s
= ppc64_elf_tdata (ibfd
)->got
;
8979 ent
->got
.offset
= s
->size
;
8984 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8985 srel
->size
+= sizeof (Elf64_External_Rela
);
8990 ent
->got
.offset
= (bfd_vma
) -1;
8993 /* We now have determined the sizes of the various dynamic sections.
8994 Allocate memory for them. */
8996 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
8998 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9001 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9002 /* These haven't been allocated yet; don't strip. */
9004 else if (s
== htab
->got
9008 || s
== htab
->dynbss
)
9010 /* Strip this section if we don't need it; see the
9013 else if (CONST_STRNEQ (s
->name
, ".rela"))
9017 if (s
!= htab
->relplt
)
9020 /* We use the reloc_count field as a counter if we need
9021 to copy relocs into the output file. */
9027 /* It's not one of our sections, so don't allocate space. */
9033 /* If we don't need this section, strip it from the
9034 output file. This is mostly to handle .rela.bss and
9035 .rela.plt. We must create both sections in
9036 create_dynamic_sections, because they must be created
9037 before the linker maps input sections to output
9038 sections. The linker does that before
9039 adjust_dynamic_symbol is called, and it is that
9040 function which decides whether anything needs to go
9041 into these sections. */
9042 s
->flags
|= SEC_EXCLUDE
;
9046 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9049 /* Allocate memory for the section contents. We use bfd_zalloc
9050 here in case unused entries are not reclaimed before the
9051 section's contents are written out. This should not happen,
9052 but this way if it does we get a R_PPC64_NONE reloc in .rela
9053 sections instead of garbage.
9054 We also rely on the section contents being zero when writing
9056 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9057 if (s
->contents
== NULL
)
9061 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9063 if (!is_ppc64_elf (ibfd
))
9066 s
= ppc64_elf_tdata (ibfd
)->got
;
9067 if (s
!= NULL
&& s
!= htab
->got
)
9070 s
->flags
|= SEC_EXCLUDE
;
9073 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9074 if (s
->contents
== NULL
)
9078 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9082 s
->flags
|= SEC_EXCLUDE
;
9085 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9086 if (s
->contents
== NULL
)
9094 if (htab
->elf
.dynamic_sections_created
)
9096 /* Add some entries to the .dynamic section. We fill in the
9097 values later, in ppc64_elf_finish_dynamic_sections, but we
9098 must add the entries now so that we get the correct size for
9099 the .dynamic section. The DT_DEBUG entry is filled in by the
9100 dynamic linker and used by the debugger. */
9101 #define add_dynamic_entry(TAG, VAL) \
9102 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9104 if (info
->executable
)
9106 if (!add_dynamic_entry (DT_DEBUG
, 0))
9110 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9112 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9113 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9114 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9115 || !add_dynamic_entry (DT_JMPREL
, 0)
9116 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9122 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9123 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9127 if (!htab
->no_tls_get_addr_opt
9128 && htab
->tls_get_addr_fd
!= NULL
9129 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9130 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9135 if (!add_dynamic_entry (DT_RELA
, 0)
9136 || !add_dynamic_entry (DT_RELASZ
, 0)
9137 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9140 /* If any dynamic relocs apply to a read-only section,
9141 then we need a DT_TEXTREL entry. */
9142 if ((info
->flags
& DF_TEXTREL
) == 0)
9143 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9145 if ((info
->flags
& DF_TEXTREL
) != 0)
9147 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9152 #undef add_dynamic_entry
9157 /* Determine the type of stub needed, if any, for a call. */
9159 static inline enum ppc_stub_type
9160 ppc_type_of_stub (asection
*input_sec
,
9161 const Elf_Internal_Rela
*rel
,
9162 struct ppc_link_hash_entry
**hash
,
9163 struct plt_entry
**plt_ent
,
9164 bfd_vma destination
)
9166 struct ppc_link_hash_entry
*h
= *hash
;
9168 bfd_vma branch_offset
;
9169 bfd_vma max_branch_offset
;
9170 enum elf_ppc64_reloc_type r_type
;
9174 struct plt_entry
*ent
;
9175 struct ppc_link_hash_entry
*fdh
= h
;
9177 && h
->oh
->is_func_descriptor
)
9179 fdh
= ppc_follow_link (h
->oh
);
9183 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9184 if (ent
->addend
== rel
->r_addend
9185 && ent
->plt
.offset
!= (bfd_vma
) -1)
9188 return ppc_stub_plt_call
;
9191 /* Here, we know we don't have a plt entry. If we don't have a
9192 either a defined function descriptor or a defined entry symbol
9193 in a regular object file, then it is pointless trying to make
9194 any other type of stub. */
9195 if (!is_static_defined (&fdh
->elf
)
9196 && !is_static_defined (&h
->elf
))
9197 return ppc_stub_none
;
9199 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9201 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9202 struct plt_entry
**local_plt
= (struct plt_entry
**)
9203 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9204 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9206 if (local_plt
[r_symndx
] != NULL
)
9208 struct plt_entry
*ent
;
9210 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9211 if (ent
->addend
== rel
->r_addend
9212 && ent
->plt
.offset
!= (bfd_vma
) -1)
9215 return ppc_stub_plt_call
;
9220 /* Determine where the call point is. */
9221 location
= (input_sec
->output_offset
9222 + input_sec
->output_section
->vma
9225 branch_offset
= destination
- location
;
9226 r_type
= ELF64_R_TYPE (rel
->r_info
);
9228 /* Determine if a long branch stub is needed. */
9229 max_branch_offset
= 1 << 25;
9230 if (r_type
!= R_PPC64_REL24
)
9231 max_branch_offset
= 1 << 15;
9233 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9234 /* We need a stub. Figure out whether a long_branch or plt_branch
9236 return ppc_stub_long_branch
;
9238 return ppc_stub_none
;
9241 /* Build a .plt call stub. */
9243 static inline bfd_byte
*
9244 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9246 #define PPC_LO(v) ((v) & 0xffff)
9247 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9248 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9250 if (PPC_HA (offset
) != 0)
9254 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9255 r
[1].r_offset
= r
[0].r_offset
+ 8;
9256 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9257 r
[1].r_addend
= r
[0].r_addend
;
9258 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9260 r
[2].r_offset
= r
[1].r_offset
+ 4;
9261 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9262 r
[2].r_addend
= r
[0].r_addend
;
9266 r
[2].r_offset
= r
[1].r_offset
+ 8;
9267 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9268 r
[2].r_addend
= r
[0].r_addend
+ 8;
9269 r
[3].r_offset
= r
[2].r_offset
+ 4;
9270 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9271 r
[3].r_addend
= r
[0].r_addend
+ 16;
9274 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9275 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9276 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9277 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9279 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9282 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9283 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9284 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9285 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9292 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9293 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9295 r
[1].r_offset
= r
[0].r_offset
+ 4;
9296 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9297 r
[1].r_addend
= r
[0].r_addend
;
9301 r
[1].r_offset
= r
[0].r_offset
+ 8;
9302 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9303 r
[1].r_addend
= r
[0].r_addend
+ 16;
9304 r
[2].r_offset
= r
[1].r_offset
+ 4;
9305 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9306 r
[2].r_addend
= r
[0].r_addend
+ 8;
9309 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9310 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9311 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9313 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9316 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9317 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9318 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9319 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9324 /* Build a special .plt call stub for __tls_get_addr. */
9326 #define LD_R11_0R3 0xe9630000
9327 #define LD_R12_0R3 0xe9830000
9328 #define MR_R0_R3 0x7c601b78
9329 #define CMPDI_R11_0 0x2c2b0000
9330 #define ADD_R3_R12_R13 0x7c6c6a14
9331 #define BEQLR 0x4d820020
9332 #define MR_R3_R0 0x7c030378
9333 #define MFLR_R11 0x7d6802a6
9334 #define STD_R11_0R1 0xf9610000
9335 #define BCTRL 0x4e800421
9336 #define LD_R11_0R1 0xe9610000
9337 #define LD_R2_0R1 0xe8410000
9338 #define MTLR_R11 0x7d6803a6
9340 static inline bfd_byte
*
9341 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9342 Elf_Internal_Rela
*r
)
9344 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9345 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9346 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9347 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9348 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9349 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9350 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9351 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9352 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9355 r
[0].r_offset
+= 9 * 4;
9356 p
= build_plt_stub (obfd
, p
, offset
, r
);
9357 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9359 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9360 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9361 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9362 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9367 static Elf_Internal_Rela
*
9368 get_relocs (asection
*sec
, int count
)
9370 Elf_Internal_Rela
*relocs
;
9371 struct bfd_elf_section_data
*elfsec_data
;
9373 elfsec_data
= elf_section_data (sec
);
9374 relocs
= elfsec_data
->relocs
;
9377 bfd_size_type relsize
;
9378 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9379 relocs
= bfd_alloc (sec
->owner
, relsize
);
9382 elfsec_data
->relocs
= relocs
;
9383 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9384 sizeof (Elf_Internal_Shdr
));
9385 if (elfsec_data
->rela
.hdr
== NULL
)
9387 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9388 * sizeof (Elf64_External_Rela
));
9389 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9390 sec
->reloc_count
= 0;
9392 relocs
+= sec
->reloc_count
;
9393 sec
->reloc_count
+= count
;
9398 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9400 struct ppc_stub_hash_entry
*stub_entry
;
9401 struct ppc_branch_hash_entry
*br_entry
;
9402 struct bfd_link_info
*info
;
9403 struct ppc_link_hash_table
*htab
;
9408 Elf_Internal_Rela
*r
;
9411 /* Massage our args to the form they really have. */
9412 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9415 htab
= ppc_hash_table (info
);
9419 /* Make a note of the offset within the stubs for this entry. */
9420 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9421 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9423 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9424 switch (stub_entry
->stub_type
)
9426 case ppc_stub_long_branch
:
9427 case ppc_stub_long_branch_r2off
:
9428 /* Branches are relative. This is where we are going to. */
9429 off
= dest
= (stub_entry
->target_value
9430 + stub_entry
->target_section
->output_offset
9431 + stub_entry
->target_section
->output_section
->vma
);
9433 /* And this is where we are coming from. */
9434 off
-= (stub_entry
->stub_offset
9435 + stub_entry
->stub_sec
->output_offset
9436 + stub_entry
->stub_sec
->output_section
->vma
);
9439 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9443 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9444 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9445 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9448 if (PPC_HA (r2off
) != 0)
9451 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9454 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9458 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9460 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9462 (*_bfd_error_handler
) (_("long branch stub `%s' offset overflow"),
9463 stub_entry
->root
.string
);
9464 htab
->stub_error
= TRUE
;
9468 if (info
->emitrelocations
)
9470 r
= get_relocs (stub_entry
->stub_sec
, 1);
9473 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9474 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9476 if (stub_entry
->h
!= NULL
)
9478 struct elf_link_hash_entry
**hashes
;
9479 unsigned long symndx
;
9480 struct ppc_link_hash_entry
*h
;
9482 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9485 bfd_size_type hsize
;
9487 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9488 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9491 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9492 htab
->stub_globals
= 1;
9494 symndx
= htab
->stub_globals
++;
9496 hashes
[symndx
] = &h
->elf
;
9497 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9498 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9499 h
= ppc_follow_link (h
->oh
);
9500 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9501 /* H is an opd symbol. The addend must be zero. */
9505 off
= (h
->elf
.root
.u
.def
.value
9506 + h
->elf
.root
.u
.def
.section
->output_offset
9507 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9514 case ppc_stub_plt_branch
:
9515 case ppc_stub_plt_branch_r2off
:
9516 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9517 stub_entry
->root
.string
+ 9,
9519 if (br_entry
== NULL
)
9521 (*_bfd_error_handler
) (_("can't find branch stub `%s'"),
9522 stub_entry
->root
.string
);
9523 htab
->stub_error
= TRUE
;
9527 dest
= (stub_entry
->target_value
9528 + stub_entry
->target_section
->output_offset
9529 + stub_entry
->target_section
->output_section
->vma
);
9531 bfd_put_64 (htab
->brlt
->owner
, dest
,
9532 htab
->brlt
->contents
+ br_entry
->offset
);
9534 if (br_entry
->iter
== htab
->stub_iteration
)
9538 if (htab
->relbrlt
!= NULL
)
9540 /* Create a reloc for the branch lookup table entry. */
9541 Elf_Internal_Rela rela
;
9544 rela
.r_offset
= (br_entry
->offset
9545 + htab
->brlt
->output_offset
9546 + htab
->brlt
->output_section
->vma
);
9547 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9548 rela
.r_addend
= dest
;
9550 rl
= htab
->relbrlt
->contents
;
9551 rl
+= (htab
->relbrlt
->reloc_count
++
9552 * sizeof (Elf64_External_Rela
));
9553 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9555 else if (info
->emitrelocations
)
9557 r
= get_relocs (htab
->brlt
, 1);
9560 /* brlt, being SEC_LINKER_CREATED does not go through the
9561 normal reloc processing. Symbols and offsets are not
9562 translated from input file to output file form, so
9563 set up the offset per the output file. */
9564 r
->r_offset
= (br_entry
->offset
9565 + htab
->brlt
->output_offset
9566 + htab
->brlt
->output_section
->vma
);
9567 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9572 dest
= (br_entry
->offset
9573 + htab
->brlt
->output_offset
9574 + htab
->brlt
->output_section
->vma
);
9577 - elf_gp (htab
->brlt
->output_section
->owner
)
9578 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9580 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9582 (*_bfd_error_handler
)
9583 (_("linkage table error against `%s'"),
9584 stub_entry
->root
.string
);
9585 bfd_set_error (bfd_error_bad_value
);
9586 htab
->stub_error
= TRUE
;
9590 if (info
->emitrelocations
)
9592 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9595 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9596 if (bfd_big_endian (info
->output_bfd
))
9598 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9600 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9601 r
[0].r_addend
= dest
;
9602 if (PPC_HA (off
) != 0)
9604 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9605 r
[1].r_offset
= r
[0].r_offset
+ 4;
9606 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9607 r
[1].r_addend
= r
[0].r_addend
;
9611 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9613 if (PPC_HA (off
) != 0)
9616 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9618 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9623 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9630 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9631 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9632 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9635 if (PPC_HA (off
) != 0)
9638 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9640 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9645 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9649 if (PPC_HA (r2off
) != 0)
9652 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9655 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9658 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9660 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9663 case ppc_stub_plt_call
:
9664 if (stub_entry
->h
!= NULL
9665 && stub_entry
->h
->is_func_descriptor
9666 && stub_entry
->h
->oh
!= NULL
)
9668 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9670 /* If the old-ABI "dot-symbol" is undefined make it weak so
9671 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9672 FIXME: We used to define the symbol on one of the call
9673 stubs instead, which is why we test symbol section id
9674 against htab->top_id in various places. Likely all
9675 these checks could now disappear. */
9676 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9677 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9680 /* Now build the stub. */
9681 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9682 if (dest
>= (bfd_vma
) -2)
9686 if (!htab
->elf
.dynamic_sections_created
9687 || stub_entry
->h
== NULL
9688 || stub_entry
->h
->elf
.dynindx
== -1)
9691 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9693 if (stub_entry
->h
== NULL
9694 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9696 Elf_Internal_Rela rela
;
9699 rela
.r_offset
= dest
;
9700 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9701 rela
.r_addend
= (stub_entry
->target_value
9702 + stub_entry
->target_section
->output_offset
9703 + stub_entry
->target_section
->output_section
->vma
);
9705 rl
= (htab
->reliplt
->contents
9706 + (htab
->reliplt
->reloc_count
++
9707 * sizeof (Elf64_External_Rela
)));
9708 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9709 stub_entry
->plt_ent
->plt
.offset
|= 1;
9713 - elf_gp (plt
->output_section
->owner
)
9714 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9716 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9718 (*_bfd_error_handler
)
9719 (_("linkage table error against `%s'"),
9720 stub_entry
->h
!= NULL
9721 ? stub_entry
->h
->elf
.root
.root
.string
9723 bfd_set_error (bfd_error_bad_value
);
9724 htab
->stub_error
= TRUE
;
9729 if (info
->emitrelocations
)
9731 r
= get_relocs (stub_entry
->stub_sec
,
9732 (2 + (PPC_HA (off
) != 0)
9733 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9736 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9737 if (bfd_big_endian (info
->output_bfd
))
9739 r
[0].r_addend
= dest
;
9741 if (stub_entry
->h
!= NULL
9742 && (stub_entry
->h
== htab
->tls_get_addr_fd
9743 || stub_entry
->h
== htab
->tls_get_addr
)
9744 && !htab
->no_tls_get_addr_opt
)
9745 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9747 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9756 stub_entry
->stub_sec
->size
+= size
;
9758 if (htab
->emit_stub_syms
)
9760 struct elf_link_hash_entry
*h
;
9763 const char *const stub_str
[] = { "long_branch",
9764 "long_branch_r2off",
9769 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9770 len2
= strlen (stub_entry
->root
.string
);
9771 name
= bfd_malloc (len1
+ len2
+ 2);
9774 memcpy (name
, stub_entry
->root
.string
, 9);
9775 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9776 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9777 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9780 if (h
->root
.type
== bfd_link_hash_new
)
9782 h
->root
.type
= bfd_link_hash_defined
;
9783 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9784 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9787 h
->ref_regular_nonweak
= 1;
9788 h
->forced_local
= 1;
9796 /* As above, but don't actually build the stub. Just bump offset so
9797 we know stub section sizes, and select plt_branch stubs where
9798 long_branch stubs won't do. */
9801 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9803 struct ppc_stub_hash_entry
*stub_entry
;
9804 struct bfd_link_info
*info
;
9805 struct ppc_link_hash_table
*htab
;
9809 /* Massage our args to the form they really have. */
9810 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9813 htab
= ppc_hash_table (info
);
9817 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9820 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9821 if (off
>= (bfd_vma
) -2)
9824 if (!htab
->elf
.dynamic_sections_created
9825 || stub_entry
->h
== NULL
9826 || stub_entry
->h
->elf
.dynindx
== -1)
9828 off
+= (plt
->output_offset
9829 + plt
->output_section
->vma
9830 - elf_gp (plt
->output_section
->owner
)
9831 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9833 size
= PLT_CALL_STUB_SIZE
;
9834 if (PPC_HA (off
) == 0)
9836 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9838 if (stub_entry
->h
!= NULL
9839 && (stub_entry
->h
== htab
->tls_get_addr_fd
9840 || stub_entry
->h
== htab
->tls_get_addr
)
9841 && !htab
->no_tls_get_addr_opt
)
9843 if (info
->emitrelocations
)
9845 stub_entry
->stub_sec
->reloc_count
9846 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9847 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9852 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9856 off
= (stub_entry
->target_value
9857 + stub_entry
->target_section
->output_offset
9858 + stub_entry
->target_section
->output_section
->vma
);
9859 off
-= (stub_entry
->stub_sec
->size
9860 + stub_entry
->stub_sec
->output_offset
9861 + stub_entry
->stub_sec
->output_section
->vma
);
9863 /* Reset the stub type from the plt variant in case we now
9864 can reach with a shorter stub. */
9865 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9866 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9869 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9871 r2off
= (htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
9872 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9874 if (PPC_HA (r2off
) != 0)
9879 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9880 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9882 struct ppc_branch_hash_entry
*br_entry
;
9884 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9885 stub_entry
->root
.string
+ 9,
9887 if (br_entry
== NULL
)
9889 (*_bfd_error_handler
) (_("can't build branch stub `%s'"),
9890 stub_entry
->root
.string
);
9891 htab
->stub_error
= TRUE
;
9895 if (br_entry
->iter
!= htab
->stub_iteration
)
9897 br_entry
->iter
= htab
->stub_iteration
;
9898 br_entry
->offset
= htab
->brlt
->size
;
9899 htab
->brlt
->size
+= 8;
9901 if (htab
->relbrlt
!= NULL
)
9902 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9903 else if (info
->emitrelocations
)
9905 htab
->brlt
->reloc_count
+= 1;
9906 htab
->brlt
->flags
|= SEC_RELOC
;
9910 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9911 off
= (br_entry
->offset
9912 + htab
->brlt
->output_offset
9913 + htab
->brlt
->output_section
->vma
9914 - elf_gp (htab
->brlt
->output_section
->owner
)
9915 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9917 if (info
->emitrelocations
)
9919 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9920 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9923 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9926 if (PPC_HA (off
) != 0)
9932 if (PPC_HA (off
) != 0)
9935 if (PPC_HA (r2off
) != 0)
9939 else if (info
->emitrelocations
)
9941 stub_entry
->stub_sec
->reloc_count
+= 1;
9942 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9946 stub_entry
->stub_sec
->size
+= size
;
9950 /* Set up various things so that we can make a list of input sections
9951 for each output section included in the link. Returns -1 on error,
9952 0 when no stubs will be needed, and 1 on success. */
9955 ppc64_elf_setup_section_lists
9956 (struct bfd_link_info
*info
,
9957 asection
*(*add_stub_section
) (const char *, asection
*),
9958 void (*layout_sections_again
) (void))
9961 int top_id
, top_index
, id
;
9963 asection
**input_list
;
9965 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9969 /* Stash our params away. */
9970 htab
->add_stub_section
= add_stub_section
;
9971 htab
->layout_sections_again
= layout_sections_again
;
9973 if (htab
->brlt
== NULL
)
9976 /* Find the top input section id. */
9977 for (input_bfd
= info
->input_bfds
, top_id
= 3;
9979 input_bfd
= input_bfd
->link_next
)
9981 for (section
= input_bfd
->sections
;
9983 section
= section
->next
)
9985 if (top_id
< section
->id
)
9986 top_id
= section
->id
;
9990 htab
->top_id
= top_id
;
9991 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
9992 htab
->stub_group
= bfd_zmalloc (amt
);
9993 if (htab
->stub_group
== NULL
)
9996 /* Set toc_off for com, und, abs and ind sections. */
9997 for (id
= 0; id
< 3; id
++)
9998 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10000 /* We can't use output_bfd->section_count here to find the top output
10001 section index as some sections may have been removed, and
10002 strip_excluded_output_sections doesn't renumber the indices. */
10003 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10005 section
= section
->next
)
10007 if (top_index
< section
->index
)
10008 top_index
= section
->index
;
10011 htab
->top_index
= top_index
;
10012 amt
= sizeof (asection
*) * (top_index
+ 1);
10013 input_list
= bfd_zmalloc (amt
);
10014 htab
->input_list
= input_list
;
10015 if (input_list
== NULL
)
10021 /* Set up for first pass at multitoc partitioning. */
10024 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10026 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10028 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10029 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10030 htab
->toc_bfd
= NULL
;
10031 htab
->toc_first_sec
= NULL
;
10034 /* The linker repeatedly calls this function for each TOC input section
10035 and linker generated GOT section. Group input bfds such that the toc
10036 within a group is less than 64k in size. */
10039 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10041 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10042 bfd_vma addr
, off
, limit
;
10047 if (!htab
->second_toc_pass
)
10049 /* Keep track of the first .toc or .got section for this input bfd. */
10050 if (htab
->toc_bfd
!= isec
->owner
)
10052 htab
->toc_bfd
= isec
->owner
;
10053 htab
->toc_first_sec
= isec
;
10056 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10057 off
= addr
- htab
->toc_curr
;
10058 limit
= 0x80008000;
10059 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10061 if (off
+ isec
->size
> limit
)
10063 addr
= (htab
->toc_first_sec
->output_offset
10064 + htab
->toc_first_sec
->output_section
->vma
);
10065 htab
->toc_curr
= addr
;
10068 /* toc_curr is the base address of this toc group. Set elf_gp
10069 for the input section to be the offset relative to the
10070 output toc base plus 0x8000. Making the input elf_gp an
10071 offset allows us to move the toc as a whole without
10072 recalculating input elf_gp. */
10073 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10074 off
+= TOC_BASE_OFF
;
10076 /* Die if someone uses a linker script that doesn't keep input
10077 file .toc and .got together. */
10078 if (elf_gp (isec
->owner
) != 0
10079 && elf_gp (isec
->owner
) != off
)
10082 elf_gp (isec
->owner
) = off
;
10086 /* During the second pass toc_first_sec points to the start of
10087 a toc group, and toc_curr is used to track the old elf_gp.
10088 We use toc_bfd to ensure we only look at each bfd once. */
10089 if (htab
->toc_bfd
== isec
->owner
)
10091 htab
->toc_bfd
= isec
->owner
;
10093 if (htab
->toc_first_sec
== NULL
10094 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10096 htab
->toc_curr
= elf_gp (isec
->owner
);
10097 htab
->toc_first_sec
= isec
;
10099 addr
= (htab
->toc_first_sec
->output_offset
10100 + htab
->toc_first_sec
->output_section
->vma
);
10101 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10102 elf_gp (isec
->owner
) = off
;
10107 /* Called via elf_link_hash_traverse to merge GOT entries for global
10111 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10113 if (h
->root
.type
== bfd_link_hash_indirect
)
10116 if (h
->root
.type
== bfd_link_hash_warning
)
10117 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10119 merge_got_entries (&h
->got
.glist
);
10124 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10128 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10130 struct got_entry
*gent
;
10132 if (h
->root
.type
== bfd_link_hash_indirect
)
10135 if (h
->root
.type
== bfd_link_hash_warning
)
10136 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
10138 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10139 if (!gent
->is_indirect
)
10140 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10144 /* Called on the first multitoc pass after the last call to
10145 ppc64_elf_next_toc_section. This function removes duplicate GOT
10149 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10151 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10152 struct bfd
*ibfd
, *ibfd2
;
10153 bfd_boolean done_something
;
10155 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10157 if (!htab
->do_multi_toc
)
10160 /* Merge global sym got entries within a toc group. */
10161 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10163 /* And tlsld_got. */
10164 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10166 struct got_entry
*ent
, *ent2
;
10168 if (!is_ppc64_elf (ibfd
))
10171 ent
= ppc64_tlsld_got (ibfd
);
10172 if (!ent
->is_indirect
10173 && ent
->got
.offset
!= (bfd_vma
) -1)
10175 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10177 if (!is_ppc64_elf (ibfd2
))
10180 ent2
= ppc64_tlsld_got (ibfd2
);
10181 if (!ent2
->is_indirect
10182 && ent2
->got
.offset
!= (bfd_vma
) -1
10183 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10185 ent2
->is_indirect
= TRUE
;
10186 ent2
->got
.ent
= ent
;
10192 /* Zap sizes of got sections. */
10193 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10194 htab
->reliplt
->size
-= htab
->got_reli_size
;
10195 htab
->got_reli_size
= 0;
10197 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10199 asection
*got
, *relgot
;
10201 if (!is_ppc64_elf (ibfd
))
10204 got
= ppc64_elf_tdata (ibfd
)->got
;
10207 got
->rawsize
= got
->size
;
10209 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10210 relgot
->rawsize
= relgot
->size
;
10215 /* Now reallocate the got, local syms first. We don't need to
10216 allocate section contents again since we never increase size. */
10217 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10219 struct got_entry
**lgot_ents
;
10220 struct got_entry
**end_lgot_ents
;
10221 struct plt_entry
**local_plt
;
10222 struct plt_entry
**end_local_plt
;
10223 unsigned char *lgot_masks
;
10224 bfd_size_type locsymcount
;
10225 Elf_Internal_Shdr
*symtab_hdr
;
10226 asection
*s
, *srel
;
10228 if (!is_ppc64_elf (ibfd
))
10231 lgot_ents
= elf_local_got_ents (ibfd
);
10235 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10236 locsymcount
= symtab_hdr
->sh_info
;
10237 end_lgot_ents
= lgot_ents
+ locsymcount
;
10238 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10239 end_local_plt
= local_plt
+ locsymcount
;
10240 lgot_masks
= (unsigned char *) end_local_plt
;
10241 s
= ppc64_elf_tdata (ibfd
)->got
;
10242 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10243 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10245 struct got_entry
*ent
;
10247 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10249 unsigned int num
= 1;
10250 ent
->got
.offset
= s
->size
;
10251 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10253 s
->size
+= num
* 8;
10255 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10256 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10258 htab
->reliplt
->size
10259 += num
* sizeof (Elf64_External_Rela
);
10260 htab
->got_reli_size
10261 += num
* sizeof (Elf64_External_Rela
);
10267 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10269 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10271 struct got_entry
*ent
;
10273 if (!is_ppc64_elf (ibfd
))
10276 ent
= ppc64_tlsld_got (ibfd
);
10277 if (!ent
->is_indirect
10278 && ent
->got
.offset
!= (bfd_vma
) -1)
10280 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10281 ent
->got
.offset
= s
->size
;
10285 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10286 srel
->size
+= sizeof (Elf64_External_Rela
);
10291 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10292 if (!done_something
)
10293 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10297 if (!is_ppc64_elf (ibfd
))
10300 got
= ppc64_elf_tdata (ibfd
)->got
;
10303 done_something
= got
->rawsize
!= got
->size
;
10304 if (done_something
)
10309 if (done_something
)
10310 (*htab
->layout_sections_again
) ();
10312 /* Set up for second pass over toc sections to recalculate elf_gp
10313 on input sections. */
10314 htab
->toc_bfd
= NULL
;
10315 htab
->toc_first_sec
= NULL
;
10316 htab
->second_toc_pass
= TRUE
;
10317 return done_something
;
10320 /* Called after second pass of multitoc partitioning. */
10323 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10325 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10327 /* After the second pass, toc_curr tracks the TOC offset used
10328 for code sections below in ppc64_elf_next_input_section. */
10329 htab
->toc_curr
= TOC_BASE_OFF
;
10332 /* No toc references were found in ISEC. If the code in ISEC makes no
10333 calls, then there's no need to use toc adjusting stubs when branching
10334 into ISEC. Actually, indirect calls from ISEC are OK as they will
10335 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10336 needed, and 2 if a cyclical call-graph was found but no other reason
10337 for a stub was detected. If called from the top level, a return of
10338 2 means the same as a return of 0. */
10341 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10345 /* Mark this section as checked. */
10346 isec
->call_check_done
= 1;
10348 /* We know none of our code bearing sections will need toc stubs. */
10349 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10352 if (isec
->size
== 0)
10355 if (isec
->output_section
== NULL
)
10359 if (isec
->reloc_count
!= 0)
10361 Elf_Internal_Rela
*relstart
, *rel
;
10362 Elf_Internal_Sym
*local_syms
;
10363 struct ppc_link_hash_table
*htab
;
10365 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10366 info
->keep_memory
);
10367 if (relstart
== NULL
)
10370 /* Look for branches to outside of this section. */
10372 htab
= ppc_hash_table (info
);
10376 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10378 enum elf_ppc64_reloc_type r_type
;
10379 unsigned long r_symndx
;
10380 struct elf_link_hash_entry
*h
;
10381 struct ppc_link_hash_entry
*eh
;
10382 Elf_Internal_Sym
*sym
;
10384 struct _opd_sec_data
*opd
;
10388 r_type
= ELF64_R_TYPE (rel
->r_info
);
10389 if (r_type
!= R_PPC64_REL24
10390 && r_type
!= R_PPC64_REL14
10391 && r_type
!= R_PPC64_REL14_BRTAKEN
10392 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10395 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10396 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10403 /* Calls to dynamic lib functions go through a plt call stub
10405 eh
= (struct ppc_link_hash_entry
*) h
;
10407 && (eh
->elf
.plt
.plist
!= NULL
10409 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10415 if (sym_sec
== NULL
)
10416 /* Ignore other undefined symbols. */
10419 /* Assume branches to other sections not included in the
10420 link need stubs too, to cover -R and absolute syms. */
10421 if (sym_sec
->output_section
== NULL
)
10428 sym_value
= sym
->st_value
;
10431 if (h
->root
.type
!= bfd_link_hash_defined
10432 && h
->root
.type
!= bfd_link_hash_defweak
)
10434 sym_value
= h
->root
.u
.def
.value
;
10436 sym_value
+= rel
->r_addend
;
10438 /* If this branch reloc uses an opd sym, find the code section. */
10439 opd
= get_opd_info (sym_sec
);
10442 if (h
== NULL
&& opd
->adjust
!= NULL
)
10446 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10448 /* Assume deleted functions won't ever be called. */
10450 sym_value
+= adjust
;
10453 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10454 if (dest
== (bfd_vma
) -1)
10459 + sym_sec
->output_offset
10460 + sym_sec
->output_section
->vma
);
10462 /* Ignore branch to self. */
10463 if (sym_sec
== isec
)
10466 /* If the called function uses the toc, we need a stub. */
10467 if (sym_sec
->has_toc_reloc
10468 || sym_sec
->makes_toc_func_call
)
10474 /* Assume any branch that needs a long branch stub might in fact
10475 need a plt_branch stub. A plt_branch stub uses r2. */
10476 else if (dest
- (isec
->output_offset
10477 + isec
->output_section
->vma
10478 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10484 /* If calling back to a section in the process of being
10485 tested, we can't say for sure that no toc adjusting stubs
10486 are needed, so don't return zero. */
10487 else if (sym_sec
->call_check_in_progress
)
10490 /* Branches to another section that itself doesn't have any TOC
10491 references are OK. Recursively call ourselves to check. */
10492 else if (!sym_sec
->call_check_done
)
10496 /* Mark current section as indeterminate, so that other
10497 sections that call back to current won't be marked as
10499 isec
->call_check_in_progress
= 1;
10500 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10501 isec
->call_check_in_progress
= 0;
10512 if (local_syms
!= NULL
10513 && (elf_symtab_hdr (isec
->owner
).contents
10514 != (unsigned char *) local_syms
))
10516 if (elf_section_data (isec
)->relocs
!= relstart
)
10521 && isec
->map_head
.s
!= NULL
10522 && (strcmp (isec
->output_section
->name
, ".init") == 0
10523 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10525 if (isec
->map_head
.s
->has_toc_reloc
10526 || isec
->map_head
.s
->makes_toc_func_call
)
10528 else if (!isec
->map_head
.s
->call_check_done
)
10531 isec
->call_check_in_progress
= 1;
10532 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10533 isec
->call_check_in_progress
= 0;
10540 isec
->makes_toc_func_call
= 1;
10545 /* The linker repeatedly calls this function for each input section,
10546 in the order that input sections are linked into output sections.
10547 Build lists of input sections to determine groupings between which
10548 we may insert linker stubs. */
10551 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10553 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10558 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10559 && isec
->output_section
->index
<= htab
->top_index
)
10561 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10562 /* Steal the link_sec pointer for our list. */
10563 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10564 /* This happens to make the list in reverse order,
10565 which is what we want. */
10566 PREV_SEC (isec
) = *list
;
10570 if (htab
->multi_toc_needed
)
10572 /* If a code section has a function that uses the TOC then we need
10573 to use the right TOC (obviously). Also, make sure that .opd gets
10574 the correct TOC value for R_PPC64_TOC relocs that don't have or
10575 can't find their function symbol (shouldn't ever happen now).
10576 Also specially treat .fixup for the linux kernel. .fixup
10577 contains branches, but only back to the function that hit an
10579 if (isec
->has_toc_reloc
10580 || (isec
->flags
& SEC_CODE
) == 0
10581 || strcmp (isec
->name
, ".fixup") == 0)
10583 if (elf_gp (isec
->owner
) != 0)
10584 htab
->toc_curr
= elf_gp (isec
->owner
);
10588 if (!isec
->call_check_done
10589 && toc_adjusting_stub_needed (info
, isec
) < 0)
10591 /* If we make a local call from this section, ie. a branch
10592 without a following nop, then we have no place to put a
10593 toc restoring insn. We must use the same toc group as
10595 Testing makes_toc_func_call actually tests for *any*
10596 calls to functions that need a good toc pointer. A more
10597 precise test would be better, as this one will set
10598 incorrect values for pasted .init/.fini fragments.
10599 (Fixed later in check_pasted_section.) */
10600 if (isec
->makes_toc_func_call
10601 && elf_gp (isec
->owner
) != 0)
10602 htab
->toc_curr
= elf_gp (isec
->owner
);
10606 /* Functions that don't use the TOC can belong in any TOC group.
10607 Use the last TOC base. */
10608 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10612 /* Check that all .init and .fini sections use the same toc, if they
10613 have toc relocs. */
10616 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10618 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10622 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10623 bfd_vma toc_off
= 0;
10626 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10627 if (i
->has_toc_reloc
)
10630 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10631 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10636 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10637 if (i
->makes_toc_func_call
)
10639 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10643 /* Make sure the whole pasted function uses the same toc offset. */
10645 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10646 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10652 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10654 return (check_pasted_section (info
, ".init")
10655 & check_pasted_section (info
, ".fini"));
10658 /* See whether we can group stub sections together. Grouping stub
10659 sections may result in fewer stubs. More importantly, we need to
10660 put all .init* and .fini* stubs at the beginning of the .init or
10661 .fini output sections respectively, because glibc splits the
10662 _init and _fini functions into multiple parts. Putting a stub in
10663 the middle of a function is not a good idea. */
10666 group_sections (struct ppc_link_hash_table
*htab
,
10667 bfd_size_type stub_group_size
,
10668 bfd_boolean stubs_always_before_branch
)
10671 bfd_size_type stub14_group_size
;
10672 bfd_boolean suppress_size_errors
;
10674 suppress_size_errors
= FALSE
;
10675 stub14_group_size
= stub_group_size
;
10676 if (stub_group_size
== 1)
10678 /* Default values. */
10679 if (stubs_always_before_branch
)
10681 stub_group_size
= 0x1e00000;
10682 stub14_group_size
= 0x7800;
10686 stub_group_size
= 0x1c00000;
10687 stub14_group_size
= 0x7000;
10689 suppress_size_errors
= TRUE
;
10692 list
= htab
->input_list
+ htab
->top_index
;
10695 asection
*tail
= *list
;
10696 while (tail
!= NULL
)
10700 bfd_size_type total
;
10701 bfd_boolean big_sec
;
10705 total
= tail
->size
;
10706 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
10707 && ppc64_elf_section_data (tail
)->has_14bit_branch
10708 ? stub14_group_size
: stub_group_size
);
10709 if (big_sec
&& !suppress_size_errors
)
10710 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10711 tail
->owner
, tail
);
10712 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10714 while ((prev
= PREV_SEC (curr
)) != NULL
10715 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10716 < (ppc64_elf_section_data (prev
) != NULL
10717 && ppc64_elf_section_data (prev
)->has_14bit_branch
10718 ? stub14_group_size
: stub_group_size
))
10719 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10722 /* OK, the size from the start of CURR to the end is less
10723 than stub_group_size and thus can be handled by one stub
10724 section. (or the tail section is itself larger than
10725 stub_group_size, in which case we may be toast.) We
10726 should really be keeping track of the total size of stubs
10727 added here, as stubs contribute to the final output
10728 section size. That's a little tricky, and this way will
10729 only break if stubs added make the total size more than
10730 2^25, ie. for the default stub_group_size, if stubs total
10731 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10734 prev
= PREV_SEC (tail
);
10735 /* Set up this stub group. */
10736 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10738 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10740 /* But wait, there's more! Input sections up to stub_group_size
10741 bytes before the stub section can be handled by it too.
10742 Don't do this if we have a really large section after the
10743 stubs, as adding more stubs increases the chance that
10744 branches may not reach into the stub section. */
10745 if (!stubs_always_before_branch
&& !big_sec
)
10748 while (prev
!= NULL
10749 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10750 < (ppc64_elf_section_data (prev
) != NULL
10751 && ppc64_elf_section_data (prev
)->has_14bit_branch
10752 ? stub14_group_size
: stub_group_size
))
10753 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10756 prev
= PREV_SEC (tail
);
10757 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10763 while (list
-- != htab
->input_list
);
10764 free (htab
->input_list
);
10768 /* Determine and set the size of the stub section for a final link.
10770 The basic idea here is to examine all the relocations looking for
10771 PC-relative calls to a target that is unreachable with a "bl"
10775 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10777 bfd_size_type stub_group_size
;
10778 bfd_boolean stubs_always_before_branch
;
10779 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10784 stubs_always_before_branch
= group_size
< 0;
10785 if (group_size
< 0)
10786 stub_group_size
= -group_size
;
10788 stub_group_size
= group_size
;
10790 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10795 unsigned int bfd_indx
;
10796 asection
*stub_sec
;
10798 htab
->stub_iteration
+= 1;
10800 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10802 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10804 Elf_Internal_Shdr
*symtab_hdr
;
10806 Elf_Internal_Sym
*local_syms
= NULL
;
10808 if (!is_ppc64_elf (input_bfd
))
10811 /* We'll need the symbol table in a second. */
10812 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10813 if (symtab_hdr
->sh_info
== 0)
10816 /* Walk over each section attached to the input bfd. */
10817 for (section
= input_bfd
->sections
;
10819 section
= section
->next
)
10821 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10823 /* If there aren't any relocs, then there's nothing more
10825 if ((section
->flags
& SEC_RELOC
) == 0
10826 || (section
->flags
& SEC_ALLOC
) == 0
10827 || (section
->flags
& SEC_LOAD
) == 0
10828 || (section
->flags
& SEC_CODE
) == 0
10829 || section
->reloc_count
== 0)
10832 /* If this section is a link-once section that will be
10833 discarded, then don't create any stubs. */
10834 if (section
->output_section
== NULL
10835 || section
->output_section
->owner
!= info
->output_bfd
)
10838 /* Get the relocs. */
10840 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10841 info
->keep_memory
);
10842 if (internal_relocs
== NULL
)
10843 goto error_ret_free_local
;
10845 /* Now examine each relocation. */
10846 irela
= internal_relocs
;
10847 irelaend
= irela
+ section
->reloc_count
;
10848 for (; irela
< irelaend
; irela
++)
10850 enum elf_ppc64_reloc_type r_type
;
10851 unsigned int r_indx
;
10852 enum ppc_stub_type stub_type
;
10853 struct ppc_stub_hash_entry
*stub_entry
;
10854 asection
*sym_sec
, *code_sec
;
10855 bfd_vma sym_value
, code_value
;
10856 bfd_vma destination
;
10857 bfd_boolean ok_dest
;
10858 struct ppc_link_hash_entry
*hash
;
10859 struct ppc_link_hash_entry
*fdh
;
10860 struct elf_link_hash_entry
*h
;
10861 Elf_Internal_Sym
*sym
;
10863 const asection
*id_sec
;
10864 struct _opd_sec_data
*opd
;
10865 struct plt_entry
*plt_ent
;
10867 r_type
= ELF64_R_TYPE (irela
->r_info
);
10868 r_indx
= ELF64_R_SYM (irela
->r_info
);
10870 if (r_type
>= R_PPC64_max
)
10872 bfd_set_error (bfd_error_bad_value
);
10873 goto error_ret_free_internal
;
10876 /* Only look for stubs on branch instructions. */
10877 if (r_type
!= R_PPC64_REL24
10878 && r_type
!= R_PPC64_REL14
10879 && r_type
!= R_PPC64_REL14_BRTAKEN
10880 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10883 /* Now determine the call target, its name, value,
10885 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
10886 r_indx
, input_bfd
))
10887 goto error_ret_free_internal
;
10888 hash
= (struct ppc_link_hash_entry
*) h
;
10895 sym_value
= sym
->st_value
;
10898 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
10899 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
10901 sym_value
= hash
->elf
.root
.u
.def
.value
;
10902 if (sym_sec
->output_section
!= NULL
)
10905 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
10906 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
10908 /* Recognise an old ABI func code entry sym, and
10909 use the func descriptor sym instead if it is
10911 if (hash
->elf
.root
.root
.string
[0] == '.'
10912 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
10914 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
10915 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
10917 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
10918 sym_value
= fdh
->elf
.root
.u
.def
.value
;
10919 if (sym_sec
->output_section
!= NULL
)
10928 bfd_set_error (bfd_error_bad_value
);
10929 goto error_ret_free_internal
;
10935 sym_value
+= irela
->r_addend
;
10936 destination
= (sym_value
10937 + sym_sec
->output_offset
10938 + sym_sec
->output_section
->vma
);
10941 code_sec
= sym_sec
;
10942 code_value
= sym_value
;
10943 opd
= get_opd_info (sym_sec
);
10948 if (hash
== NULL
&& opd
->adjust
!= NULL
)
10950 long adjust
= opd
->adjust
[sym_value
/ 8];
10953 code_value
+= adjust
;
10954 sym_value
+= adjust
;
10956 dest
= opd_entry_value (sym_sec
, sym_value
,
10957 &code_sec
, &code_value
);
10958 if (dest
!= (bfd_vma
) -1)
10960 destination
= dest
;
10963 /* Fixup old ABI sym to point at code
10965 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
10966 hash
->elf
.root
.u
.def
.section
= code_sec
;
10967 hash
->elf
.root
.u
.def
.value
= code_value
;
10972 /* Determine what (if any) linker stub is needed. */
10974 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
10975 &plt_ent
, destination
);
10977 if (stub_type
!= ppc_stub_plt_call
)
10979 /* Check whether we need a TOC adjusting stub.
10980 Since the linker pastes together pieces from
10981 different object files when creating the
10982 _init and _fini functions, it may be that a
10983 call to what looks like a local sym is in
10984 fact a call needing a TOC adjustment. */
10985 if (code_sec
!= NULL
10986 && code_sec
->output_section
!= NULL
10987 && (htab
->stub_group
[code_sec
->id
].toc_off
10988 != htab
->stub_group
[section
->id
].toc_off
)
10989 && (code_sec
->has_toc_reloc
10990 || code_sec
->makes_toc_func_call
))
10991 stub_type
= ppc_stub_long_branch_r2off
;
10994 if (stub_type
== ppc_stub_none
)
10997 /* __tls_get_addr calls might be eliminated. */
10998 if (stub_type
!= ppc_stub_plt_call
11000 && (hash
== htab
->tls_get_addr
11001 || hash
== htab
->tls_get_addr_fd
)
11002 && section
->has_tls_reloc
11003 && irela
!= internal_relocs
)
11005 /* Get tls info. */
11006 unsigned char *tls_mask
;
11008 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11009 irela
- 1, input_bfd
))
11010 goto error_ret_free_internal
;
11011 if (*tls_mask
!= 0)
11015 /* Support for grouping stub sections. */
11016 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11018 /* Get the name of this stub. */
11019 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11021 goto error_ret_free_internal
;
11023 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11024 stub_name
, FALSE
, FALSE
);
11025 if (stub_entry
!= NULL
)
11027 /* The proper stub has already been created. */
11032 stub_entry
= ppc_add_stub (stub_name
, section
, htab
);
11033 if (stub_entry
== NULL
)
11036 error_ret_free_internal
:
11037 if (elf_section_data (section
)->relocs
== NULL
)
11038 free (internal_relocs
);
11039 error_ret_free_local
:
11040 if (local_syms
!= NULL
11041 && (symtab_hdr
->contents
11042 != (unsigned char *) local_syms
))
11047 stub_entry
->stub_type
= stub_type
;
11048 if (stub_type
!= ppc_stub_plt_call
)
11050 stub_entry
->target_value
= code_value
;
11051 stub_entry
->target_section
= code_sec
;
11055 stub_entry
->target_value
= sym_value
;
11056 stub_entry
->target_section
= sym_sec
;
11058 stub_entry
->h
= hash
;
11059 stub_entry
->plt_ent
= plt_ent
;
11060 stub_entry
->addend
= irela
->r_addend
;
11062 if (stub_entry
->h
!= NULL
)
11063 htab
->stub_globals
+= 1;
11066 /* We're done with the internal relocs, free them. */
11067 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11068 free (internal_relocs
);
11071 if (local_syms
!= NULL
11072 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11074 if (!info
->keep_memory
)
11077 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11081 /* We may have added some stubs. Find out the new size of the
11083 for (stub_sec
= htab
->stub_bfd
->sections
;
11085 stub_sec
= stub_sec
->next
)
11086 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11088 stub_sec
->rawsize
= stub_sec
->size
;
11089 stub_sec
->size
= 0;
11090 stub_sec
->reloc_count
= 0;
11091 stub_sec
->flags
&= ~SEC_RELOC
;
11094 htab
->brlt
->size
= 0;
11095 htab
->brlt
->reloc_count
= 0;
11096 htab
->brlt
->flags
&= ~SEC_RELOC
;
11097 if (htab
->relbrlt
!= NULL
)
11098 htab
->relbrlt
->size
= 0;
11100 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11102 if (info
->emitrelocations
11103 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11105 htab
->glink
->reloc_count
= 1;
11106 htab
->glink
->flags
|= SEC_RELOC
;
11109 for (stub_sec
= htab
->stub_bfd
->sections
;
11111 stub_sec
= stub_sec
->next
)
11112 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11113 && stub_sec
->rawsize
!= stub_sec
->size
)
11116 /* Exit from this loop when no stubs have been added, and no stubs
11117 have changed size. */
11118 if (stub_sec
== NULL
)
11121 /* Ask the linker to do its stuff. */
11122 (*htab
->layout_sections_again
) ();
11125 /* It would be nice to strip htab->brlt from the output if the
11126 section is empty, but it's too late. If we strip sections here,
11127 the dynamic symbol table is corrupted since the section symbol
11128 for the stripped section isn't written. */
11133 /* Called after we have determined section placement. If sections
11134 move, we'll be called again. Provide a value for TOCstart. */
11137 ppc64_elf_toc (bfd
*obfd
)
11142 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11143 order. The TOC starts where the first of these sections starts. */
11144 s
= bfd_get_section_by_name (obfd
, ".got");
11145 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11146 s
= bfd_get_section_by_name (obfd
, ".toc");
11147 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11148 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11149 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11150 s
= bfd_get_section_by_name (obfd
, ".plt");
11151 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11153 /* This may happen for
11154 o references to TOC base (SYM@toc / TOC[tc0]) without a
11156 o bad linker script
11157 o --gc-sections and empty TOC sections
11159 FIXME: Warn user? */
11161 /* Look for a likely section. We probably won't even be
11163 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11164 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11166 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11169 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11170 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11171 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11174 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11175 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11179 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11180 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11186 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11191 /* Build all the stubs associated with the current output file.
11192 The stubs are kept in a hash table attached to the main linker
11193 hash table. This function is called via gldelf64ppc_finish. */
11196 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11197 struct bfd_link_info
*info
,
11200 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11201 asection
*stub_sec
;
11203 int stub_sec_count
= 0;
11208 htab
->emit_stub_syms
= emit_stub_syms
;
11210 /* Allocate memory to hold the linker stubs. */
11211 for (stub_sec
= htab
->stub_bfd
->sections
;
11213 stub_sec
= stub_sec
->next
)
11214 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11215 && stub_sec
->size
!= 0)
11217 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11218 if (stub_sec
->contents
== NULL
)
11220 /* We want to check that built size is the same as calculated
11221 size. rawsize is a convenient location to use. */
11222 stub_sec
->rawsize
= stub_sec
->size
;
11223 stub_sec
->size
= 0;
11226 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11231 /* Build the .glink plt call stub. */
11232 if (htab
->emit_stub_syms
)
11234 struct elf_link_hash_entry
*h
;
11235 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11236 TRUE
, FALSE
, FALSE
);
11239 if (h
->root
.type
== bfd_link_hash_new
)
11241 h
->root
.type
= bfd_link_hash_defined
;
11242 h
->root
.u
.def
.section
= htab
->glink
;
11243 h
->root
.u
.def
.value
= 8;
11244 h
->ref_regular
= 1;
11245 h
->def_regular
= 1;
11246 h
->ref_regular_nonweak
= 1;
11247 h
->forced_local
= 1;
11251 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11252 if (info
->emitrelocations
)
11254 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11257 r
->r_offset
= (htab
->glink
->output_offset
11258 + htab
->glink
->output_section
->vma
);
11259 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11260 r
->r_addend
= plt0
;
11262 p
= htab
->glink
->contents
;
11263 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11264 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11266 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11268 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11270 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11272 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11274 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11276 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11278 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11280 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11282 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11284 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11286 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11288 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11290 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11294 /* Build the .glink lazy link call stubs. */
11296 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11300 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11305 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11307 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11310 bfd_put_32 (htab
->glink
->owner
,
11311 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11315 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11318 if (htab
->brlt
->size
!= 0)
11320 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11322 if (htab
->brlt
->contents
== NULL
)
11325 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11327 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11328 htab
->relbrlt
->size
);
11329 if (htab
->relbrlt
->contents
== NULL
)
11333 /* Build the stubs as directed by the stub hash table. */
11334 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11336 if (htab
->relbrlt
!= NULL
)
11337 htab
->relbrlt
->reloc_count
= 0;
11339 for (stub_sec
= htab
->stub_bfd
->sections
;
11341 stub_sec
= stub_sec
->next
)
11342 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11344 stub_sec_count
+= 1;
11345 if (stub_sec
->rawsize
!= stub_sec
->size
)
11349 if (stub_sec
!= NULL
11350 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11352 htab
->stub_error
= TRUE
;
11353 (*_bfd_error_handler
) (_("stubs don't match calculated size"));
11356 if (htab
->stub_error
)
11361 *stats
= bfd_malloc (500);
11362 if (*stats
== NULL
)
11365 sprintf (*stats
, _("linker stubs in %u group%s\n"
11367 " toc adjust %lu\n"
11368 " long branch %lu\n"
11369 " long toc adj %lu\n"
11372 stub_sec_count
== 1 ? "" : "s",
11373 htab
->stub_count
[ppc_stub_long_branch
- 1],
11374 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11375 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11376 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11377 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11382 /* This function undoes the changes made by add_symbol_adjust. */
11385 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11387 struct ppc_link_hash_entry
*eh
;
11389 if (h
->root
.type
== bfd_link_hash_indirect
)
11392 if (h
->root
.type
== bfd_link_hash_warning
)
11393 h
= (struct elf_link_hash_entry
*) h
->root
.u
.i
.link
;
11395 eh
= (struct ppc_link_hash_entry
*) h
;
11396 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11399 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11404 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11406 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11409 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11412 /* What to do when ld finds relocations against symbols defined in
11413 discarded sections. */
11415 static unsigned int
11416 ppc64_elf_action_discarded (asection
*sec
)
11418 if (strcmp (".opd", sec
->name
) == 0)
11421 if (strcmp (".toc", sec
->name
) == 0)
11424 if (strcmp (".toc1", sec
->name
) == 0)
11427 return _bfd_elf_default_action_discarded (sec
);
11430 /* REL points to a low-part reloc on a largetoc instruction sequence.
11431 Find the matching high-part reloc instruction and verify that it
11432 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11433 the high-part reloc. */
11435 static const Elf_Internal_Rela
*
11436 ha_reloc_match (const Elf_Internal_Rela
*relocs
,
11437 const Elf_Internal_Rela
*rel
,
11439 bfd_boolean match_addend
,
11440 const bfd
*input_bfd
,
11441 const bfd_byte
*contents
)
11443 enum elf_ppc64_reloc_type r_type
, r_type_ha
;
11444 bfd_vma r_info_ha
, r_addend
;
11446 r_type
= ELF64_R_TYPE (rel
->r_info
);
11449 case R_PPC64_GOT_TLSLD16_LO
:
11450 case R_PPC64_GOT_TLSGD16_LO
:
11451 case R_PPC64_GOT_TPREL16_LO_DS
:
11452 case R_PPC64_GOT_DTPREL16_LO_DS
:
11453 case R_PPC64_GOT16_LO
:
11454 case R_PPC64_TOC16_LO
:
11455 r_type_ha
= r_type
+ 2;
11457 case R_PPC64_GOT16_LO_DS
:
11458 r_type_ha
= R_PPC64_GOT16_HA
;
11460 case R_PPC64_TOC16_LO_DS
:
11461 r_type_ha
= R_PPC64_TOC16_HA
;
11466 r_info_ha
= ELF64_R_INFO (ELF64_R_SYM (rel
->r_info
), r_type_ha
);
11467 r_addend
= rel
->r_addend
;
11469 while (--rel
>= relocs
)
11470 if (rel
->r_info
== r_info_ha
11472 || rel
->r_addend
== r_addend
))
11474 const bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
11475 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
11476 if ((insn
& (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11477 && (insn
& (0x1f << 21)) == (*reg
<< 21))
11479 *reg
= (insn
>> 16) & 0x1f;
11487 /* The RELOCATE_SECTION function is called by the ELF backend linker
11488 to handle the relocations for a section.
11490 The relocs are always passed as Rela structures; if the section
11491 actually uses Rel structures, the r_addend field will always be
11494 This function is responsible for adjust the section contents as
11495 necessary, and (if using Rela relocs and generating a
11496 relocatable output file) adjusting the reloc addend as
11499 This function does not have to worry about setting the reloc
11500 address or the reloc symbol index.
11502 LOCAL_SYMS is a pointer to the swapped in local symbols.
11504 LOCAL_SECTIONS is an array giving the section in the input file
11505 corresponding to the st_shndx field of each local symbol.
11507 The global hash table entry for the global symbols can be found
11508 via elf_sym_hashes (input_bfd).
11510 When generating relocatable output, this function must handle
11511 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11512 going to be the section symbol corresponding to the output
11513 section, which means that the addend must be adjusted
11517 ppc64_elf_relocate_section (bfd
*output_bfd
,
11518 struct bfd_link_info
*info
,
11520 asection
*input_section
,
11521 bfd_byte
*contents
,
11522 Elf_Internal_Rela
*relocs
,
11523 Elf_Internal_Sym
*local_syms
,
11524 asection
**local_sections
)
11526 struct ppc_link_hash_table
*htab
;
11527 Elf_Internal_Shdr
*symtab_hdr
;
11528 struct elf_link_hash_entry
**sym_hashes
;
11529 Elf_Internal_Rela
*rel
;
11530 Elf_Internal_Rela
*relend
;
11531 Elf_Internal_Rela outrel
;
11533 struct got_entry
**local_got_ents
;
11534 unsigned char *ha_opt
;
11536 bfd_boolean no_ha_opt
;
11537 bfd_boolean ret
= TRUE
;
11538 bfd_boolean is_opd
;
11539 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11540 bfd_boolean is_power4
= FALSE
;
11541 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11543 /* Initialize howto table if needed. */
11544 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11547 htab
= ppc_hash_table (info
);
11551 /* Don't relocate stub sections. */
11552 if (input_section
->owner
== htab
->stub_bfd
)
11555 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11557 local_got_ents
= elf_local_got_ents (input_bfd
);
11558 TOCstart
= elf_gp (output_bfd
);
11559 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11560 sym_hashes
= elf_sym_hashes (input_bfd
);
11561 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11566 relend
= relocs
+ input_section
->reloc_count
;
11567 for (; rel
< relend
; rel
++)
11569 enum elf_ppc64_reloc_type r_type
;
11570 bfd_vma addend
, orig_addend
;
11571 bfd_reloc_status_type r
;
11572 Elf_Internal_Sym
*sym
;
11574 struct elf_link_hash_entry
*h_elf
;
11575 struct ppc_link_hash_entry
*h
;
11576 struct ppc_link_hash_entry
*fdh
;
11577 const char *sym_name
;
11578 unsigned long r_symndx
, toc_symndx
;
11579 bfd_vma toc_addend
;
11580 unsigned char tls_mask
, tls_gd
, tls_type
;
11581 unsigned char sym_type
;
11582 bfd_vma relocation
;
11583 bfd_boolean unresolved_reloc
;
11584 bfd_boolean warned
;
11587 struct ppc_stub_hash_entry
*stub_entry
;
11588 bfd_vma max_br_offset
;
11591 r_type
= ELF64_R_TYPE (rel
->r_info
);
11592 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11594 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11595 symbol of the previous ADDR64 reloc. The symbol gives us the
11596 proper TOC base to use. */
11597 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11599 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11601 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11607 unresolved_reloc
= FALSE
;
11609 orig_addend
= rel
->r_addend
;
11611 if (r_symndx
< symtab_hdr
->sh_info
)
11613 /* It's a local symbol. */
11614 struct _opd_sec_data
*opd
;
11616 sym
= local_syms
+ r_symndx
;
11617 sec
= local_sections
[r_symndx
];
11618 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11619 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11620 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11621 opd
= get_opd_info (sec
);
11622 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11624 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11629 /* If this is a relocation against the opd section sym
11630 and we have edited .opd, adjust the reloc addend so
11631 that ld -r and ld --emit-relocs output is correct.
11632 If it is a reloc against some other .opd symbol,
11633 then the symbol value will be adjusted later. */
11634 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11635 rel
->r_addend
+= adjust
;
11637 relocation
+= adjust
;
11643 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11644 r_symndx
, symtab_hdr
, sym_hashes
,
11645 h_elf
, sec
, relocation
,
11646 unresolved_reloc
, warned
);
11647 sym_name
= h_elf
->root
.root
.string
;
11648 sym_type
= h_elf
->type
;
11650 h
= (struct ppc_link_hash_entry
*) h_elf
;
11652 if (sec
!= NULL
&& elf_discarded_section (sec
))
11653 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
11655 ppc64_elf_howto_table
[r_type
],
11658 if (info
->relocatable
)
11661 /* TLS optimizations. Replace instruction sequences and relocs
11662 based on information we collected in tls_optimize. We edit
11663 RELOCS so that --emit-relocs will output something sensible
11664 for the final instruction stream. */
11669 tls_mask
= h
->tls_mask
;
11670 else if (local_got_ents
!= NULL
)
11672 struct plt_entry
**local_plt
= (struct plt_entry
**)
11673 (local_got_ents
+ symtab_hdr
->sh_info
);
11674 unsigned char *lgot_masks
= (unsigned char *)
11675 (local_plt
+ symtab_hdr
->sh_info
);
11676 tls_mask
= lgot_masks
[r_symndx
];
11679 && (r_type
== R_PPC64_TLS
11680 || r_type
== R_PPC64_TLSGD
11681 || r_type
== R_PPC64_TLSLD
))
11683 /* Check for toc tls entries. */
11684 unsigned char *toc_tls
;
11686 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11687 &local_syms
, rel
, input_bfd
))
11691 tls_mask
= *toc_tls
;
11694 /* Check that tls relocs are used with tls syms, and non-tls
11695 relocs are used with non-tls syms. */
11696 if (r_symndx
!= STN_UNDEF
11697 && r_type
!= R_PPC64_NONE
11699 || h
->elf
.root
.type
== bfd_link_hash_defined
11700 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11701 && (IS_PPC64_TLS_RELOC (r_type
)
11702 != (sym_type
== STT_TLS
11703 || (sym_type
== STT_SECTION
11704 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11707 && (r_type
== R_PPC64_TLS
11708 || r_type
== R_PPC64_TLSGD
11709 || r_type
== R_PPC64_TLSLD
))
11710 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11713 (*_bfd_error_handler
)
11714 (!IS_PPC64_TLS_RELOC (r_type
)
11715 ? _("%B(%A+0x%lx): %s used with TLS symbol %s")
11716 : _("%B(%A+0x%lx): %s used with non-TLS symbol %s"),
11719 (long) rel
->r_offset
,
11720 ppc64_elf_howto_table
[r_type
]->name
,
11724 /* Ensure reloc mapping code below stays sane. */
11725 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11726 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11727 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11728 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11729 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11730 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11731 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11732 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11733 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11734 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11742 case R_PPC64_LO_DS_OPT
:
11743 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11744 if ((insn
& (0x3f << 26)) != 58u << 26)
11746 insn
+= (14u << 26) - (58u << 26);
11747 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11748 r_type
= R_PPC64_TOC16_LO
;
11749 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11752 case R_PPC64_TOC16
:
11753 case R_PPC64_TOC16_LO
:
11754 case R_PPC64_TOC16_DS
:
11755 case R_PPC64_TOC16_LO_DS
:
11757 /* Check for toc tls entries. */
11758 unsigned char *toc_tls
;
11761 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11762 &local_syms
, rel
, input_bfd
);
11768 tls_mask
= *toc_tls
;
11769 if (r_type
== R_PPC64_TOC16_DS
11770 || r_type
== R_PPC64_TOC16_LO_DS
)
11773 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11778 /* If we found a GD reloc pair, then we might be
11779 doing a GD->IE transition. */
11782 tls_gd
= TLS_TPRELGD
;
11783 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11786 else if (retval
== 3)
11788 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11796 case R_PPC64_GOT_TPREL16_HI
:
11797 case R_PPC64_GOT_TPREL16_HA
:
11799 && (tls_mask
& TLS_TPREL
) == 0)
11801 rel
->r_offset
-= d_offset
;
11802 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11803 r_type
= R_PPC64_NONE
;
11804 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11808 case R_PPC64_GOT_TPREL16_DS
:
11809 case R_PPC64_GOT_TPREL16_LO_DS
:
11811 && (tls_mask
& TLS_TPREL
) == 0)
11814 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11816 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11817 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11818 r_type
= R_PPC64_TPREL16_HA
;
11819 if (toc_symndx
!= 0)
11821 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11822 rel
->r_addend
= toc_addend
;
11823 /* We changed the symbol. Start over in order to
11824 get h, sym, sec etc. right. */
11829 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11835 && (tls_mask
& TLS_TPREL
) == 0)
11837 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11838 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11841 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11842 /* Was PPC64_TLS which sits on insn boundary, now
11843 PPC64_TPREL16_LO which is at low-order half-word. */
11844 rel
->r_offset
+= d_offset
;
11845 r_type
= R_PPC64_TPREL16_LO
;
11846 if (toc_symndx
!= 0)
11848 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11849 rel
->r_addend
= toc_addend
;
11850 /* We changed the symbol. Start over in order to
11851 get h, sym, sec etc. right. */
11856 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11860 case R_PPC64_GOT_TLSGD16_HI
:
11861 case R_PPC64_GOT_TLSGD16_HA
:
11862 tls_gd
= TLS_TPRELGD
;
11863 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11867 case R_PPC64_GOT_TLSLD16_HI
:
11868 case R_PPC64_GOT_TLSLD16_HA
:
11869 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11872 if ((tls_mask
& tls_gd
) != 0)
11873 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11874 + R_PPC64_GOT_TPREL16_DS
);
11877 rel
->r_offset
-= d_offset
;
11878 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11879 r_type
= R_PPC64_NONE
;
11881 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11885 case R_PPC64_GOT_TLSGD16
:
11886 case R_PPC64_GOT_TLSGD16_LO
:
11887 tls_gd
= TLS_TPRELGD
;
11888 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11892 case R_PPC64_GOT_TLSLD16
:
11893 case R_PPC64_GOT_TLSLD16_LO
:
11894 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11896 unsigned int insn1
, insn2
, insn3
;
11900 offset
= (bfd_vma
) -1;
11901 /* If not using the newer R_PPC64_TLSGD/LD to mark
11902 __tls_get_addr calls, we must trust that the call
11903 stays with its arg setup insns, ie. that the next
11904 reloc is the __tls_get_addr call associated with
11905 the current reloc. Edit both insns. */
11906 if (input_section
->has_tls_get_addr_call
11907 && rel
+ 1 < relend
11908 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
11909 htab
->tls_get_addr
,
11910 htab
->tls_get_addr_fd
))
11911 offset
= rel
[1].r_offset
;
11912 if ((tls_mask
& tls_gd
) != 0)
11915 insn1
= bfd_get_32 (output_bfd
,
11916 contents
+ rel
->r_offset
- d_offset
);
11917 insn1
&= (1 << 26) - (1 << 2);
11918 insn1
|= 58 << 26; /* ld */
11919 insn2
= 0x7c636a14; /* add 3,3,13 */
11920 if (offset
!= (bfd_vma
) -1)
11921 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11922 if ((tls_mask
& TLS_EXPLICIT
) == 0)
11923 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11924 + R_PPC64_GOT_TPREL16_DS
);
11926 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
11927 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11932 insn1
= 0x3c6d0000; /* addis 3,13,0 */
11933 insn2
= 0x38630000; /* addi 3,3,0 */
11936 /* Was an LD reloc. */
11938 sec
= local_sections
[toc_symndx
];
11940 r_symndx
< symtab_hdr
->sh_info
;
11942 if (local_sections
[r_symndx
] == sec
)
11944 if (r_symndx
>= symtab_hdr
->sh_info
)
11945 r_symndx
= STN_UNDEF
;
11946 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11947 if (r_symndx
!= STN_UNDEF
)
11948 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11949 + sec
->output_offset
11950 + sec
->output_section
->vma
);
11952 else if (toc_symndx
!= 0)
11954 r_symndx
= toc_symndx
;
11955 rel
->r_addend
= toc_addend
;
11957 r_type
= R_PPC64_TPREL16_HA
;
11958 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11959 if (offset
!= (bfd_vma
) -1)
11961 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
11962 R_PPC64_TPREL16_LO
);
11963 rel
[1].r_offset
= offset
+ d_offset
;
11964 rel
[1].r_addend
= rel
->r_addend
;
11967 bfd_put_32 (output_bfd
, insn1
,
11968 contents
+ rel
->r_offset
- d_offset
);
11969 if (offset
!= (bfd_vma
) -1)
11971 insn3
= bfd_get_32 (output_bfd
,
11972 contents
+ offset
+ 4);
11974 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
11976 rel
[1].r_offset
+= 4;
11977 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
11980 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
11982 if ((tls_mask
& tls_gd
) == 0
11983 && (tls_gd
== 0 || toc_symndx
!= 0))
11985 /* We changed the symbol. Start over in order
11986 to get h, sym, sec etc. right. */
11993 case R_PPC64_TLSGD
:
11994 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11996 unsigned int insn2
, insn3
;
11997 bfd_vma offset
= rel
->r_offset
;
11999 if ((tls_mask
& TLS_TPRELGD
) != 0)
12002 r_type
= R_PPC64_NONE
;
12003 insn2
= 0x7c636a14; /* add 3,3,13 */
12008 if (toc_symndx
!= 0)
12010 r_symndx
= toc_symndx
;
12011 rel
->r_addend
= toc_addend
;
12013 r_type
= R_PPC64_TPREL16_LO
;
12014 rel
->r_offset
= offset
+ d_offset
;
12015 insn2
= 0x38630000; /* addi 3,3,0 */
12017 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12018 /* Zap the reloc on the _tls_get_addr call too. */
12019 BFD_ASSERT (offset
== rel
[1].r_offset
);
12020 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12021 insn3
= bfd_get_32 (output_bfd
,
12022 contents
+ offset
+ 4);
12024 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12026 rel
->r_offset
+= 4;
12027 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12030 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12031 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12039 case R_PPC64_TLSLD
:
12040 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12042 unsigned int insn2
, insn3
;
12043 bfd_vma offset
= rel
->r_offset
;
12046 sec
= local_sections
[toc_symndx
];
12048 r_symndx
< symtab_hdr
->sh_info
;
12050 if (local_sections
[r_symndx
] == sec
)
12052 if (r_symndx
>= symtab_hdr
->sh_info
)
12053 r_symndx
= STN_UNDEF
;
12054 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12055 if (r_symndx
!= STN_UNDEF
)
12056 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12057 + sec
->output_offset
12058 + sec
->output_section
->vma
);
12060 r_type
= R_PPC64_TPREL16_LO
;
12061 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12062 rel
->r_offset
= offset
+ d_offset
;
12063 /* Zap the reloc on the _tls_get_addr call too. */
12064 BFD_ASSERT (offset
== rel
[1].r_offset
);
12065 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12066 insn2
= 0x38630000; /* addi 3,3,0 */
12067 insn3
= bfd_get_32 (output_bfd
,
12068 contents
+ offset
+ 4);
12070 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12072 rel
->r_offset
+= 4;
12073 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12076 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12082 case R_PPC64_DTPMOD64
:
12083 if (rel
+ 1 < relend
12084 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12085 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12087 if ((tls_mask
& TLS_GD
) == 0)
12089 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12090 if ((tls_mask
& TLS_TPRELGD
) != 0)
12091 r_type
= R_PPC64_TPREL64
;
12094 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12095 r_type
= R_PPC64_NONE
;
12097 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12102 if ((tls_mask
& TLS_LD
) == 0)
12104 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12105 r_type
= R_PPC64_NONE
;
12106 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12111 case R_PPC64_TPREL64
:
12112 if ((tls_mask
& TLS_TPREL
) == 0)
12114 r_type
= R_PPC64_NONE
;
12115 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12120 /* Handle other relocations that tweak non-addend part of insn. */
12122 max_br_offset
= 1 << 25;
12123 addend
= rel
->r_addend
;
12129 /* Branch taken prediction relocations. */
12130 case R_PPC64_ADDR14_BRTAKEN
:
12131 case R_PPC64_REL14_BRTAKEN
:
12132 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12135 /* Branch not taken prediction relocations. */
12136 case R_PPC64_ADDR14_BRNTAKEN
:
12137 case R_PPC64_REL14_BRNTAKEN
:
12138 insn
|= bfd_get_32 (output_bfd
,
12139 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12142 case R_PPC64_REL14
:
12143 max_br_offset
= 1 << 15;
12146 case R_PPC64_REL24
:
12147 /* Calls to functions with a different TOC, such as calls to
12148 shared objects, need to alter the TOC pointer. This is
12149 done using a linkage stub. A REL24 branching to these
12150 linkage stubs needs to be followed by a nop, as the nop
12151 will be replaced with an instruction to restore the TOC
12156 && h
->oh
->is_func_descriptor
)
12157 fdh
= ppc_follow_link (h
->oh
);
12158 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12159 if (stub_entry
!= NULL
12160 && (stub_entry
->stub_type
== ppc_stub_plt_call
12161 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12162 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12164 bfd_boolean can_plt_call
= FALSE
;
12166 if (rel
->r_offset
+ 8 <= input_section
->size
)
12169 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12171 || nop
== CROR_151515
|| nop
== CROR_313131
)
12174 && (h
== htab
->tls_get_addr_fd
12175 || h
== htab
->tls_get_addr
)
12176 && !htab
->no_tls_get_addr_opt
)
12178 /* Special stub used, leave nop alone. */
12181 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12182 contents
+ rel
->r_offset
+ 4);
12183 can_plt_call
= TRUE
;
12189 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12191 /* If this is a plain branch rather than a branch
12192 and link, don't require a nop. However, don't
12193 allow tail calls in a shared library as they
12194 will result in r2 being corrupted. */
12196 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12197 if (info
->executable
&& (br
& 1) == 0)
12198 can_plt_call
= TRUE
;
12203 && strcmp (h
->elf
.root
.root
.string
,
12204 ".__libc_start_main") == 0)
12206 /* Allow crt1 branch to go via a toc adjusting stub. */
12207 can_plt_call
= TRUE
;
12211 if (strcmp (input_section
->output_section
->name
,
12213 || strcmp (input_section
->output_section
->name
,
12215 (*_bfd_error_handler
)
12216 (_("%B(%A+0x%lx): automatic multiple TOCs "
12217 "not supported using your crt files; "
12218 "recompile with -mminimal-toc or upgrade gcc"),
12221 (long) rel
->r_offset
);
12223 (*_bfd_error_handler
)
12224 (_("%B(%A+0x%lx): sibling call optimization to `%s' "
12225 "does not allow automatic multiple TOCs; "
12226 "recompile with -mminimal-toc or "
12227 "-fno-optimize-sibling-calls, "
12228 "or make `%s' extern"),
12231 (long) rel
->r_offset
,
12234 bfd_set_error (bfd_error_bad_value
);
12240 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12241 unresolved_reloc
= FALSE
;
12244 if ((stub_entry
== NULL
12245 || stub_entry
->stub_type
== ppc_stub_long_branch
12246 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12247 && get_opd_info (sec
) != NULL
)
12249 /* The branch destination is the value of the opd entry. */
12250 bfd_vma off
= (relocation
+ addend
12251 - sec
->output_section
->vma
12252 - sec
->output_offset
);
12253 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12254 if (dest
!= (bfd_vma
) -1)
12261 /* If the branch is out of reach we ought to have a long
12263 from
= (rel
->r_offset
12264 + input_section
->output_offset
12265 + input_section
->output_section
->vma
);
12267 if (stub_entry
!= NULL
12268 && (stub_entry
->stub_type
== ppc_stub_long_branch
12269 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12270 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12271 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12272 || (relocation
+ addend
- from
+ max_br_offset
12273 < 2 * max_br_offset
)))
12274 /* Don't use the stub if this branch is in range. */
12277 if (stub_entry
!= NULL
)
12279 /* Munge up the value and addend so that we call the stub
12280 rather than the procedure directly. */
12281 relocation
= (stub_entry
->stub_offset
12282 + stub_entry
->stub_sec
->output_offset
12283 + stub_entry
->stub_sec
->output_section
->vma
);
12291 /* Set 'a' bit. This is 0b00010 in BO field for branch
12292 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12293 for branch on CTR insns (BO == 1a00t or 1a01t). */
12294 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12295 insn
|= 0x02 << 21;
12296 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12297 insn
|= 0x08 << 21;
12303 /* Invert 'y' bit if not the default. */
12304 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12305 insn
^= 0x01 << 21;
12308 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12311 /* NOP out calls to undefined weak functions.
12312 We can thus call a weak function without first
12313 checking whether the function is defined. */
12315 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12316 && h
->elf
.dynindx
== -1
12317 && r_type
== R_PPC64_REL24
12321 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12327 /* Set `addend'. */
12332 (*_bfd_error_handler
)
12333 (_("%B: unknown relocation type %d for symbol %s"),
12334 input_bfd
, (int) r_type
, sym_name
);
12336 bfd_set_error (bfd_error_bad_value
);
12342 case R_PPC64_TLSGD
:
12343 case R_PPC64_TLSLD
:
12344 case R_PPC64_GNU_VTINHERIT
:
12345 case R_PPC64_GNU_VTENTRY
:
12348 /* GOT16 relocations. Like an ADDR16 using the symbol's
12349 address in the GOT as relocation value instead of the
12350 symbol's value itself. Also, create a GOT entry for the
12351 symbol and put the symbol value there. */
12352 case R_PPC64_GOT_TLSGD16
:
12353 case R_PPC64_GOT_TLSGD16_LO
:
12354 case R_PPC64_GOT_TLSGD16_HI
:
12355 case R_PPC64_GOT_TLSGD16_HA
:
12356 tls_type
= TLS_TLS
| TLS_GD
;
12359 case R_PPC64_GOT_TLSLD16
:
12360 case R_PPC64_GOT_TLSLD16_LO
:
12361 case R_PPC64_GOT_TLSLD16_HI
:
12362 case R_PPC64_GOT_TLSLD16_HA
:
12363 tls_type
= TLS_TLS
| TLS_LD
;
12366 case R_PPC64_GOT_TPREL16_DS
:
12367 case R_PPC64_GOT_TPREL16_LO_DS
:
12368 case R_PPC64_GOT_TPREL16_HI
:
12369 case R_PPC64_GOT_TPREL16_HA
:
12370 tls_type
= TLS_TLS
| TLS_TPREL
;
12373 case R_PPC64_GOT_DTPREL16_DS
:
12374 case R_PPC64_GOT_DTPREL16_LO_DS
:
12375 case R_PPC64_GOT_DTPREL16_HI
:
12376 case R_PPC64_GOT_DTPREL16_HA
:
12377 tls_type
= TLS_TLS
| TLS_DTPREL
;
12380 case R_PPC64_GOT16
:
12381 case R_PPC64_GOT16_LO
:
12382 case R_PPC64_GOT16_HI
:
12383 case R_PPC64_GOT16_HA
:
12384 case R_PPC64_GOT16_DS
:
12385 case R_PPC64_GOT16_LO_DS
:
12388 /* Relocation is to the entry for this symbol in the global
12393 unsigned long indx
= 0;
12394 struct got_entry
*ent
;
12396 if (tls_type
== (TLS_TLS
| TLS_LD
)
12398 || !h
->elf
.def_dynamic
))
12399 ent
= ppc64_tlsld_got (input_bfd
);
12405 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12406 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12409 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12410 /* This is actually a static link, or it is a
12411 -Bsymbolic link and the symbol is defined
12412 locally, or the symbol was forced to be local
12413 because of a version file. */
12417 indx
= h
->elf
.dynindx
;
12418 unresolved_reloc
= FALSE
;
12420 ent
= h
->elf
.got
.glist
;
12424 if (local_got_ents
== NULL
)
12426 ent
= local_got_ents
[r_symndx
];
12429 for (; ent
!= NULL
; ent
= ent
->next
)
12430 if (ent
->addend
== orig_addend
12431 && ent
->owner
== input_bfd
12432 && ent
->tls_type
== tls_type
)
12438 if (ent
->is_indirect
)
12439 ent
= ent
->got
.ent
;
12440 offp
= &ent
->got
.offset
;
12441 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12445 /* The offset must always be a multiple of 8. We use the
12446 least significant bit to record whether we have already
12447 processed this entry. */
12449 if ((off
& 1) != 0)
12453 /* Generate relocs for the dynamic linker, except in
12454 the case of TLSLD where we'll use one entry per
12462 ? h
->elf
.type
== STT_GNU_IFUNC
12463 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12464 if ((info
->shared
|| indx
!= 0)
12466 || (tls_type
== (TLS_TLS
| TLS_LD
)
12467 && !h
->elf
.def_dynamic
)
12468 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12469 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12470 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12472 relgot
= htab
->reliplt
;
12473 if (relgot
!= NULL
)
12475 outrel
.r_offset
= (got
->output_section
->vma
12476 + got
->output_offset
12478 outrel
.r_addend
= addend
;
12479 if (tls_type
& (TLS_LD
| TLS_GD
))
12481 outrel
.r_addend
= 0;
12482 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12483 if (tls_type
== (TLS_TLS
| TLS_GD
))
12485 loc
= relgot
->contents
;
12486 loc
+= (relgot
->reloc_count
++
12487 * sizeof (Elf64_External_Rela
));
12488 bfd_elf64_swap_reloca_out (output_bfd
,
12490 outrel
.r_offset
+= 8;
12491 outrel
.r_addend
= addend
;
12493 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12496 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12497 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12498 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12499 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12500 else if (indx
!= 0)
12501 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12505 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12507 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12509 /* Write the .got section contents for the sake
12511 loc
= got
->contents
+ off
;
12512 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12516 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12518 outrel
.r_addend
+= relocation
;
12519 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12520 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12522 loc
= relgot
->contents
;
12523 loc
+= (relgot
->reloc_count
++
12524 * sizeof (Elf64_External_Rela
));
12525 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12528 /* Init the .got section contents here if we're not
12529 emitting a reloc. */
12532 relocation
+= addend
;
12533 if (tls_type
== (TLS_TLS
| TLS_LD
))
12535 else if (tls_type
!= 0)
12537 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12538 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12539 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12541 if (tls_type
== (TLS_TLS
| TLS_GD
))
12543 bfd_put_64 (output_bfd
, relocation
,
12544 got
->contents
+ off
+ 8);
12549 bfd_put_64 (output_bfd
, relocation
,
12550 got
->contents
+ off
);
12554 if (off
>= (bfd_vma
) -2)
12557 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12558 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12562 case R_PPC64_PLT16_HA
:
12563 case R_PPC64_PLT16_HI
:
12564 case R_PPC64_PLT16_LO
:
12565 case R_PPC64_PLT32
:
12566 case R_PPC64_PLT64
:
12567 /* Relocation is to the entry for this symbol in the
12568 procedure linkage table. */
12570 /* Resolve a PLT reloc against a local symbol directly,
12571 without using the procedure linkage table. */
12575 /* It's possible that we didn't make a PLT entry for this
12576 symbol. This happens when statically linking PIC code,
12577 or when using -Bsymbolic. Go find a match if there is a
12579 if (htab
->plt
!= NULL
)
12581 struct plt_entry
*ent
;
12582 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12583 if (ent
->addend
== orig_addend
12584 && ent
->plt
.offset
!= (bfd_vma
) -1)
12586 relocation
= (htab
->plt
->output_section
->vma
12587 + htab
->plt
->output_offset
12588 + ent
->plt
.offset
);
12589 unresolved_reloc
= FALSE
;
12595 /* Relocation value is TOC base. */
12596 relocation
= TOCstart
;
12597 if (r_symndx
== STN_UNDEF
)
12598 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12599 else if (unresolved_reloc
)
12601 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12602 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12604 unresolved_reloc
= TRUE
;
12607 /* TOC16 relocs. We want the offset relative to the TOC base,
12608 which is the address of the start of the TOC plus 0x8000.
12609 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12611 case R_PPC64_TOC16
:
12612 case R_PPC64_TOC16_LO
:
12613 case R_PPC64_TOC16_HI
:
12614 case R_PPC64_TOC16_DS
:
12615 case R_PPC64_TOC16_LO_DS
:
12616 case R_PPC64_TOC16_HA
:
12617 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12620 /* Relocate against the beginning of the section. */
12621 case R_PPC64_SECTOFF
:
12622 case R_PPC64_SECTOFF_LO
:
12623 case R_PPC64_SECTOFF_HI
:
12624 case R_PPC64_SECTOFF_DS
:
12625 case R_PPC64_SECTOFF_LO_DS
:
12626 case R_PPC64_SECTOFF_HA
:
12628 addend
-= sec
->output_section
->vma
;
12631 case R_PPC64_REL16
:
12632 case R_PPC64_REL16_LO
:
12633 case R_PPC64_REL16_HI
:
12634 case R_PPC64_REL16_HA
:
12637 case R_PPC64_REL14
:
12638 case R_PPC64_REL14_BRNTAKEN
:
12639 case R_PPC64_REL14_BRTAKEN
:
12640 case R_PPC64_REL24
:
12643 case R_PPC64_TPREL16
:
12644 case R_PPC64_TPREL16_LO
:
12645 case R_PPC64_TPREL16_HI
:
12646 case R_PPC64_TPREL16_HA
:
12647 case R_PPC64_TPREL16_DS
:
12648 case R_PPC64_TPREL16_LO_DS
:
12649 case R_PPC64_TPREL16_HIGHER
:
12650 case R_PPC64_TPREL16_HIGHERA
:
12651 case R_PPC64_TPREL16_HIGHEST
:
12652 case R_PPC64_TPREL16_HIGHESTA
:
12654 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12655 && h
->elf
.dynindx
== -1)
12657 /* Make this relocation against an undefined weak symbol
12658 resolve to zero. This is really just a tweak, since
12659 code using weak externs ought to check that they are
12660 defined before using them. */
12661 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12663 insn
= bfd_get_32 (output_bfd
, p
);
12664 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12666 bfd_put_32 (output_bfd
, insn
, p
);
12669 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12671 /* The TPREL16 relocs shouldn't really be used in shared
12672 libs as they will result in DT_TEXTREL being set, but
12673 support them anyway. */
12677 case R_PPC64_DTPREL16
:
12678 case R_PPC64_DTPREL16_LO
:
12679 case R_PPC64_DTPREL16_HI
:
12680 case R_PPC64_DTPREL16_HA
:
12681 case R_PPC64_DTPREL16_DS
:
12682 case R_PPC64_DTPREL16_LO_DS
:
12683 case R_PPC64_DTPREL16_HIGHER
:
12684 case R_PPC64_DTPREL16_HIGHERA
:
12685 case R_PPC64_DTPREL16_HIGHEST
:
12686 case R_PPC64_DTPREL16_HIGHESTA
:
12687 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12690 case R_PPC64_DTPMOD64
:
12695 case R_PPC64_TPREL64
:
12696 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12699 case R_PPC64_DTPREL64
:
12700 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12703 /* Relocations that may need to be propagated if this is a
12705 case R_PPC64_REL30
:
12706 case R_PPC64_REL32
:
12707 case R_PPC64_REL64
:
12708 case R_PPC64_ADDR14
:
12709 case R_PPC64_ADDR14_BRNTAKEN
:
12710 case R_PPC64_ADDR14_BRTAKEN
:
12711 case R_PPC64_ADDR16
:
12712 case R_PPC64_ADDR16_DS
:
12713 case R_PPC64_ADDR16_HA
:
12714 case R_PPC64_ADDR16_HI
:
12715 case R_PPC64_ADDR16_HIGHER
:
12716 case R_PPC64_ADDR16_HIGHERA
:
12717 case R_PPC64_ADDR16_HIGHEST
:
12718 case R_PPC64_ADDR16_HIGHESTA
:
12719 case R_PPC64_ADDR16_LO
:
12720 case R_PPC64_ADDR16_LO_DS
:
12721 case R_PPC64_ADDR24
:
12722 case R_PPC64_ADDR32
:
12723 case R_PPC64_ADDR64
:
12724 case R_PPC64_UADDR16
:
12725 case R_PPC64_UADDR32
:
12726 case R_PPC64_UADDR64
:
12728 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12731 if (NO_OPD_RELOCS
&& is_opd
)
12736 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12737 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12738 && (must_be_dyn_reloc (info
, r_type
)
12739 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12740 || (ELIMINATE_COPY_RELOCS
12743 && h
->elf
.dynindx
!= -1
12744 && !h
->elf
.non_got_ref
12745 && !h
->elf
.def_regular
)
12748 ? h
->elf
.type
== STT_GNU_IFUNC
12749 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12751 bfd_boolean skip
, relocate
;
12755 /* When generating a dynamic object, these relocations
12756 are copied into the output file to be resolved at run
12762 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12763 input_section
, rel
->r_offset
);
12764 if (out_off
== (bfd_vma
) -1)
12766 else if (out_off
== (bfd_vma
) -2)
12767 skip
= TRUE
, relocate
= TRUE
;
12768 out_off
+= (input_section
->output_section
->vma
12769 + input_section
->output_offset
);
12770 outrel
.r_offset
= out_off
;
12771 outrel
.r_addend
= rel
->r_addend
;
12773 /* Optimize unaligned reloc use. */
12774 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12775 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12776 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12777 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12778 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12779 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12780 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12781 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12782 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12785 memset (&outrel
, 0, sizeof outrel
);
12786 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
12788 && r_type
!= R_PPC64_TOC
)
12789 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12792 /* This symbol is local, or marked to become local,
12793 or this is an opd section reloc which must point
12794 at a local function. */
12795 outrel
.r_addend
+= relocation
;
12796 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12798 if (is_opd
&& h
!= NULL
)
12800 /* Lie about opd entries. This case occurs
12801 when building shared libraries and we
12802 reference a function in another shared
12803 lib. The same thing happens for a weak
12804 definition in an application that's
12805 overridden by a strong definition in a
12806 shared lib. (I believe this is a generic
12807 bug in binutils handling of weak syms.)
12808 In these cases we won't use the opd
12809 entry in this lib. */
12810 unresolved_reloc
= FALSE
;
12813 && r_type
== R_PPC64_ADDR64
12815 ? h
->elf
.type
== STT_GNU_IFUNC
12816 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12817 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12820 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12822 /* We need to relocate .opd contents for ld.so.
12823 Prelink also wants simple and consistent rules
12824 for relocs. This make all RELATIVE relocs have
12825 *r_offset equal to r_addend. */
12834 ? h
->elf
.type
== STT_GNU_IFUNC
12835 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12837 (*_bfd_error_handler
)
12838 (_("%B(%A+0x%lx): relocation %s for indirect "
12839 "function %s unsupported"),
12842 (long) rel
->r_offset
,
12843 ppc64_elf_howto_table
[r_type
]->name
,
12847 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
12849 else if (sec
== NULL
|| sec
->owner
== NULL
)
12851 bfd_set_error (bfd_error_bad_value
);
12858 osec
= sec
->output_section
;
12859 indx
= elf_section_data (osec
)->dynindx
;
12863 if ((osec
->flags
& SEC_READONLY
) == 0
12864 && htab
->elf
.data_index_section
!= NULL
)
12865 osec
= htab
->elf
.data_index_section
;
12867 osec
= htab
->elf
.text_index_section
;
12868 indx
= elf_section_data (osec
)->dynindx
;
12870 BFD_ASSERT (indx
!= 0);
12872 /* We are turning this relocation into one
12873 against a section symbol, so subtract out
12874 the output section's address but not the
12875 offset of the input section in the output
12877 outrel
.r_addend
-= osec
->vma
;
12880 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
12884 sreloc
= elf_section_data (input_section
)->sreloc
;
12885 if (!htab
->elf
.dynamic_sections_created
)
12886 sreloc
= htab
->reliplt
;
12887 if (sreloc
== NULL
)
12890 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
12893 loc
= sreloc
->contents
;
12894 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12895 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12897 /* If this reloc is against an external symbol, it will
12898 be computed at runtime, so there's no need to do
12899 anything now. However, for the sake of prelink ensure
12900 that the section contents are a known value. */
12903 unresolved_reloc
= FALSE
;
12904 /* The value chosen here is quite arbitrary as ld.so
12905 ignores section contents except for the special
12906 case of .opd where the contents might be accessed
12907 before relocation. Choose zero, as that won't
12908 cause reloc overflow. */
12911 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12912 to improve backward compatibility with older
12914 if (r_type
== R_PPC64_ADDR64
)
12915 addend
= outrel
.r_addend
;
12916 /* Adjust pc_relative relocs to have zero in *r_offset. */
12917 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
12918 addend
= (input_section
->output_section
->vma
12919 + input_section
->output_offset
12926 case R_PPC64_GLOB_DAT
:
12927 case R_PPC64_JMP_SLOT
:
12928 case R_PPC64_JMP_IREL
:
12929 case R_PPC64_RELATIVE
:
12930 /* We shouldn't ever see these dynamic relocs in relocatable
12932 /* Fall through. */
12934 case R_PPC64_PLTGOT16
:
12935 case R_PPC64_PLTGOT16_DS
:
12936 case R_PPC64_PLTGOT16_HA
:
12937 case R_PPC64_PLTGOT16_HI
:
12938 case R_PPC64_PLTGOT16_LO
:
12939 case R_PPC64_PLTGOT16_LO_DS
:
12940 case R_PPC64_PLTREL32
:
12941 case R_PPC64_PLTREL64
:
12942 /* These ones haven't been implemented yet. */
12944 (*_bfd_error_handler
)
12945 (_("%B: relocation %s is not supported for symbol %s."),
12947 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
12949 bfd_set_error (bfd_error_invalid_operation
);
12954 /* Multi-instruction sequences that access the TOC can be
12955 optimized, eg. addis ra,r2,0; addi rb,ra,x;
12956 to nop; addi rb,r2,x; */
12962 case R_PPC64_GOT_TLSLD16_HI
:
12963 case R_PPC64_GOT_TLSGD16_HI
:
12964 case R_PPC64_GOT_TPREL16_HI
:
12965 case R_PPC64_GOT_DTPREL16_HI
:
12966 case R_PPC64_GOT16_HI
:
12967 case R_PPC64_TOC16_HI
:
12968 /* These relocs would only be useful if building up an
12969 offset to later add to r2, perhaps in an indexed
12970 addressing mode instruction. Don't try to optimize.
12971 Unfortunately, the possibility of someone building up an
12972 offset like this or even with the HA relocs, means that
12973 we need to check the high insn when optimizing the low
12977 case R_PPC64_GOT_TLSLD16_HA
:
12978 case R_PPC64_GOT_TLSGD16_HA
:
12979 case R_PPC64_GOT_TPREL16_HA
:
12980 case R_PPC64_GOT_DTPREL16_HA
:
12981 case R_PPC64_GOT16_HA
:
12982 case R_PPC64_TOC16_HA
:
12983 /* nop is done later. */
12986 case R_PPC64_GOT_TLSLD16_LO
:
12987 case R_PPC64_GOT_TLSGD16_LO
:
12988 case R_PPC64_GOT_TPREL16_LO_DS
:
12989 case R_PPC64_GOT_DTPREL16_LO_DS
:
12990 case R_PPC64_GOT16_LO
:
12991 case R_PPC64_GOT16_LO_DS
:
12992 case R_PPC64_TOC16_LO
:
12993 case R_PPC64_TOC16_LO_DS
:
12994 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
12996 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
12997 insn
= bfd_get_32 (input_bfd
, p
);
12998 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
12999 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
13000 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
13001 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
13002 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
13003 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
13004 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
13005 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
13006 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
13007 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
13008 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
13009 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
13010 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
13011 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
13012 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13013 && (insn
& 3) != 1)
13014 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
13015 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
13017 unsigned int reg
= (insn
>> 16) & 0x1f;
13018 const Elf_Internal_Rela
*ha
;
13019 bfd_boolean match_addend
;
13021 match_addend
= (sym
!= NULL
13022 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
);
13023 ha
= ha_reloc_match (relocs
, rel
, ®
, match_addend
,
13024 input_bfd
, contents
);
13027 insn
&= ~(0x1f << 16);
13029 bfd_put_32 (input_bfd
, insn
, p
);
13030 if (ha_opt
== NULL
)
13032 ha_opt
= bfd_zmalloc (input_section
->reloc_count
);
13033 if (ha_opt
== NULL
)
13036 ha_opt
[ha
- relocs
] = 1;
13039 /* If we don't find a matching high part insn,
13040 something is fishy. Refuse to nop any high
13041 part insn in this section. */
13048 /* Do any further special processing. */
13054 case R_PPC64_ADDR16_HA
:
13055 case R_PPC64_REL16_HA
:
13056 case R_PPC64_ADDR16_HIGHERA
:
13057 case R_PPC64_ADDR16_HIGHESTA
:
13058 case R_PPC64_TOC16_HA
:
13059 case R_PPC64_SECTOFF_HA
:
13060 case R_PPC64_TPREL16_HA
:
13061 case R_PPC64_DTPREL16_HA
:
13062 case R_PPC64_TPREL16_HIGHER
:
13063 case R_PPC64_TPREL16_HIGHERA
:
13064 case R_PPC64_TPREL16_HIGHEST
:
13065 case R_PPC64_TPREL16_HIGHESTA
:
13066 case R_PPC64_DTPREL16_HIGHER
:
13067 case R_PPC64_DTPREL16_HIGHERA
:
13068 case R_PPC64_DTPREL16_HIGHEST
:
13069 case R_PPC64_DTPREL16_HIGHESTA
:
13070 /* It's just possible that this symbol is a weak symbol
13071 that's not actually defined anywhere. In that case,
13072 'sec' would be NULL, and we should leave the symbol
13073 alone (it will be set to zero elsewhere in the link). */
13078 case R_PPC64_GOT16_HA
:
13079 case R_PPC64_PLTGOT16_HA
:
13080 case R_PPC64_PLT16_HA
:
13081 case R_PPC64_GOT_TLSGD16_HA
:
13082 case R_PPC64_GOT_TLSLD16_HA
:
13083 case R_PPC64_GOT_TPREL16_HA
:
13084 case R_PPC64_GOT_DTPREL16_HA
:
13085 /* Add 0x10000 if sign bit in 0:15 is set.
13086 Bits 0:15 are not used. */
13090 case R_PPC64_ADDR16_DS
:
13091 case R_PPC64_ADDR16_LO_DS
:
13092 case R_PPC64_GOT16_DS
:
13093 case R_PPC64_GOT16_LO_DS
:
13094 case R_PPC64_PLT16_LO_DS
:
13095 case R_PPC64_SECTOFF_DS
:
13096 case R_PPC64_SECTOFF_LO_DS
:
13097 case R_PPC64_TOC16_DS
:
13098 case R_PPC64_TOC16_LO_DS
:
13099 case R_PPC64_PLTGOT16_DS
:
13100 case R_PPC64_PLTGOT16_LO_DS
:
13101 case R_PPC64_GOT_TPREL16_DS
:
13102 case R_PPC64_GOT_TPREL16_LO_DS
:
13103 case R_PPC64_GOT_DTPREL16_DS
:
13104 case R_PPC64_GOT_DTPREL16_LO_DS
:
13105 case R_PPC64_TPREL16_DS
:
13106 case R_PPC64_TPREL16_LO_DS
:
13107 case R_PPC64_DTPREL16_DS
:
13108 case R_PPC64_DTPREL16_LO_DS
:
13109 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13111 /* If this reloc is against an lq insn, then the value must be
13112 a multiple of 16. This is somewhat of a hack, but the
13113 "correct" way to do this by defining _DQ forms of all the
13114 _DS relocs bloats all reloc switches in this file. It
13115 doesn't seem to make much sense to use any of these relocs
13116 in data, so testing the insn should be safe. */
13117 if ((insn
& (0x3f << 26)) == (56u << 26))
13119 if (((relocation
+ addend
) & mask
) != 0)
13121 (*_bfd_error_handler
)
13122 (_("%B: error: relocation %s not a multiple of %d"),
13124 ppc64_elf_howto_table
[r_type
]->name
,
13126 bfd_set_error (bfd_error_bad_value
);
13133 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13134 because such sections are not SEC_ALLOC and thus ld.so will
13135 not process them. */
13136 if (unresolved_reloc
13137 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13138 && h
->elf
.def_dynamic
))
13140 (*_bfd_error_handler
)
13141 (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
13144 (long) rel
->r_offset
,
13145 ppc64_elf_howto_table
[(int) r_type
]->name
,
13146 h
->elf
.root
.root
.string
);
13150 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13158 if (r
!= bfd_reloc_ok
)
13160 if (sym_name
== NULL
)
13161 sym_name
= "(null)";
13162 if (r
== bfd_reloc_overflow
)
13167 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13168 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13170 /* Assume this is a call protected by other code that
13171 detects the symbol is undefined. If this is the case,
13172 we can safely ignore the overflow. If not, the
13173 program is hosed anyway, and a little warning isn't
13179 if (!((*info
->callbacks
->reloc_overflow
)
13180 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13181 ppc64_elf_howto_table
[r_type
]->name
,
13182 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13187 (*_bfd_error_handler
)
13188 (_("%B(%A+0x%lx): %s reloc against `%s': error %d"),
13191 (long) rel
->r_offset
,
13192 ppc64_elf_howto_table
[r_type
]->name
,
13200 if (ha_opt
!= NULL
)
13204 unsigned char *opt
= ha_opt
;
13206 relend
= relocs
+ input_section
->reloc_count
;
13207 for (; rel
< relend
; opt
++, rel
++)
13210 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13211 bfd_put_32 (input_bfd
, NOP
, p
);
13217 /* If we're emitting relocations, then shortly after this function
13218 returns, reloc offsets and addends for this section will be
13219 adjusted. Worse, reloc symbol indices will be for the output
13220 file rather than the input. Save a copy of the relocs for
13221 opd_entry_value. */
13222 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13225 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13226 rel
= bfd_alloc (input_bfd
, amt
);
13227 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13228 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13231 memcpy (rel
, relocs
, amt
);
13236 /* Adjust the value of any local symbols in opd sections. */
13239 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13240 const char *name ATTRIBUTE_UNUSED
,
13241 Elf_Internal_Sym
*elfsym
,
13242 asection
*input_sec
,
13243 struct elf_link_hash_entry
*h
)
13245 struct _opd_sec_data
*opd
;
13252 opd
= get_opd_info (input_sec
);
13253 if (opd
== NULL
|| opd
->adjust
== NULL
)
13256 value
= elfsym
->st_value
- input_sec
->output_offset
;
13257 if (!info
->relocatable
)
13258 value
-= input_sec
->output_section
->vma
;
13260 adjust
= opd
->adjust
[value
/ 8];
13264 elfsym
->st_value
+= adjust
;
13268 /* Finish up dynamic symbol handling. We set the contents of various
13269 dynamic sections here. */
13272 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13273 struct bfd_link_info
*info
,
13274 struct elf_link_hash_entry
*h
,
13275 Elf_Internal_Sym
*sym
)
13277 struct ppc_link_hash_table
*htab
;
13278 struct plt_entry
*ent
;
13279 Elf_Internal_Rela rela
;
13282 htab
= ppc_hash_table (info
);
13286 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13287 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13289 /* This symbol has an entry in the procedure linkage
13290 table. Set it up. */
13291 if (!htab
->elf
.dynamic_sections_created
13292 || h
->dynindx
== -1)
13294 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13296 && (h
->root
.type
== bfd_link_hash_defined
13297 || h
->root
.type
== bfd_link_hash_defweak
));
13298 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13299 + htab
->iplt
->output_offset
13300 + ent
->plt
.offset
);
13301 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13302 rela
.r_addend
= (h
->root
.u
.def
.value
13303 + h
->root
.u
.def
.section
->output_offset
13304 + h
->root
.u
.def
.section
->output_section
->vma
13306 loc
= (htab
->reliplt
->contents
13307 + (htab
->reliplt
->reloc_count
++
13308 * sizeof (Elf64_External_Rela
)));
13312 rela
.r_offset
= (htab
->plt
->output_section
->vma
13313 + htab
->plt
->output_offset
13314 + ent
->plt
.offset
);
13315 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13316 rela
.r_addend
= ent
->addend
;
13317 loc
= (htab
->relplt
->contents
13318 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13319 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13321 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13326 /* This symbol needs a copy reloc. Set it up. */
13328 if (h
->dynindx
== -1
13329 || (h
->root
.type
!= bfd_link_hash_defined
13330 && h
->root
.type
!= bfd_link_hash_defweak
)
13331 || htab
->relbss
== NULL
)
13334 rela
.r_offset
= (h
->root
.u
.def
.value
13335 + h
->root
.u
.def
.section
->output_section
->vma
13336 + h
->root
.u
.def
.section
->output_offset
);
13337 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13339 loc
= htab
->relbss
->contents
;
13340 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13341 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13344 /* Mark some specially defined symbols as absolute. */
13345 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13346 sym
->st_shndx
= SHN_ABS
;
13351 /* Used to decide how to sort relocs in an optimal manner for the
13352 dynamic linker, before writing them out. */
13354 static enum elf_reloc_type_class
13355 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13357 enum elf_ppc64_reloc_type r_type
;
13359 r_type
= ELF64_R_TYPE (rela
->r_info
);
13362 case R_PPC64_RELATIVE
:
13363 return reloc_class_relative
;
13364 case R_PPC64_JMP_SLOT
:
13365 return reloc_class_plt
;
13367 return reloc_class_copy
;
13369 return reloc_class_normal
;
13373 /* Finish up the dynamic sections. */
13376 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13377 struct bfd_link_info
*info
)
13379 struct ppc_link_hash_table
*htab
;
13383 htab
= ppc_hash_table (info
);
13387 dynobj
= htab
->elf
.dynobj
;
13388 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13390 if (htab
->elf
.dynamic_sections_created
)
13392 Elf64_External_Dyn
*dyncon
, *dynconend
;
13394 if (sdyn
== NULL
|| htab
->got
== NULL
)
13397 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13398 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13399 for (; dyncon
< dynconend
; dyncon
++)
13401 Elf_Internal_Dyn dyn
;
13404 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13411 case DT_PPC64_GLINK
:
13413 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13414 /* We stupidly defined DT_PPC64_GLINK to be the start
13415 of glink rather than the first entry point, which is
13416 what ld.so needs, and now have a bigger stub to
13417 support automatic multiple TOCs. */
13418 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13422 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13425 dyn
.d_un
.d_ptr
= s
->vma
;
13428 case DT_PPC64_OPDSZ
:
13429 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13432 dyn
.d_un
.d_val
= s
->size
;
13437 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13442 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13446 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13450 /* Don't count procedure linkage table relocs in the
13451 overall reloc count. */
13455 dyn
.d_un
.d_val
-= s
->size
;
13459 /* We may not be using the standard ELF linker script.
13460 If .rela.plt is the first .rela section, we adjust
13461 DT_RELA to not include it. */
13465 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13467 dyn
.d_un
.d_ptr
+= s
->size
;
13471 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13475 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13477 /* Fill in the first entry in the global offset table.
13478 We use it to hold the link-time TOCbase. */
13479 bfd_put_64 (output_bfd
,
13480 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13481 htab
->got
->contents
);
13483 /* Set .got entry size. */
13484 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13487 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13489 /* Set .plt entry size. */
13490 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13494 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13495 brlt ourselves if emitrelocations. */
13496 if (htab
->brlt
!= NULL
13497 && htab
->brlt
->reloc_count
!= 0
13498 && !_bfd_elf_link_output_relocs (output_bfd
,
13500 elf_section_data (htab
->brlt
)->rela
.hdr
,
13501 elf_section_data (htab
->brlt
)->relocs
,
13505 if (htab
->glink
!= NULL
13506 && htab
->glink
->reloc_count
!= 0
13507 && !_bfd_elf_link_output_relocs (output_bfd
,
13509 elf_section_data (htab
->glink
)->rela
.hdr
,
13510 elf_section_data (htab
->glink
)->relocs
,
13514 /* We need to handle writing out multiple GOT sections ourselves,
13515 since we didn't add them to DYNOBJ. We know dynobj is the first
13517 while ((dynobj
= dynobj
->link_next
) != NULL
)
13521 if (!is_ppc64_elf (dynobj
))
13524 s
= ppc64_elf_tdata (dynobj
)->got
;
13527 && s
->output_section
!= bfd_abs_section_ptr
13528 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13529 s
->contents
, s
->output_offset
,
13532 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13535 && s
->output_section
!= bfd_abs_section_ptr
13536 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13537 s
->contents
, s
->output_offset
,
13545 #include "elf64-target.h"