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 _bfd_generic_verify_endian_match
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
88 #define bfd_elf64_bfd_link_just_syms ppc64_elf_link_just_syms
90 #define elf_backend_object_p ppc64_elf_object_p
91 #define elf_backend_grok_prstatus ppc64_elf_grok_prstatus
92 #define elf_backend_grok_psinfo ppc64_elf_grok_psinfo
93 #define elf_backend_write_core_note ppc64_elf_write_core_note
94 #define elf_backend_create_dynamic_sections ppc64_elf_create_dynamic_sections
95 #define elf_backend_copy_indirect_symbol ppc64_elf_copy_indirect_symbol
96 #define elf_backend_add_symbol_hook ppc64_elf_add_symbol_hook
97 #define elf_backend_check_directives ppc64_elf_process_dot_syms
98 #define elf_backend_as_needed_cleanup ppc64_elf_as_needed_cleanup
99 #define elf_backend_archive_symbol_lookup ppc64_elf_archive_symbol_lookup
100 #define elf_backend_check_relocs ppc64_elf_check_relocs
101 #define elf_backend_gc_keep ppc64_elf_gc_keep
102 #define elf_backend_gc_mark_dynamic_ref ppc64_elf_gc_mark_dynamic_ref
103 #define elf_backend_gc_mark_hook ppc64_elf_gc_mark_hook
104 #define elf_backend_gc_sweep_hook ppc64_elf_gc_sweep_hook
105 #define elf_backend_adjust_dynamic_symbol ppc64_elf_adjust_dynamic_symbol
106 #define elf_backend_hide_symbol ppc64_elf_hide_symbol
107 #define elf_backend_always_size_sections ppc64_elf_func_desc_adjust
108 #define elf_backend_size_dynamic_sections ppc64_elf_size_dynamic_sections
109 #define elf_backend_init_index_section _bfd_elf_init_2_index_sections
110 #define elf_backend_action_discarded ppc64_elf_action_discarded
111 #define elf_backend_relocate_section ppc64_elf_relocate_section
112 #define elf_backend_finish_dynamic_symbol ppc64_elf_finish_dynamic_symbol
113 #define elf_backend_reloc_type_class ppc64_elf_reloc_type_class
114 #define elf_backend_finish_dynamic_sections ppc64_elf_finish_dynamic_sections
115 #define elf_backend_link_output_symbol_hook ppc64_elf_output_symbol_hook
116 #define elf_backend_special_sections ppc64_elf_special_sections
117 #define elf_backend_post_process_headers _bfd_elf_set_osabi
119 /* The name of the dynamic interpreter. This is put in the .interp
121 #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so.1"
123 /* The size in bytes of an entry in the procedure linkage table. */
124 #define PLT_ENTRY_SIZE 24
126 /* The initial size of the plt reserved for the dynamic linker. */
127 #define PLT_INITIAL_ENTRY_SIZE PLT_ENTRY_SIZE
129 /* TOC base pointers offset from start of TOC. */
130 #define TOC_BASE_OFF 0x8000
132 /* Offset of tp and dtp pointers from start of TLS block. */
133 #define TP_OFFSET 0x7000
134 #define DTP_OFFSET 0x8000
136 /* .plt call stub instructions. The normal stub is like this, but
137 sometimes the .plt entry crosses a 64k boundary and we need to
138 insert an addi to adjust r12. */
139 #define PLT_CALL_STUB_SIZE (7*4)
140 #define ADDIS_R12_R2 0x3d820000 /* addis %r12,%r2,xxx@ha */
141 #define STD_R2_40R1 0xf8410028 /* std %r2,40(%r1) */
142 #define LD_R11_0R12 0xe96c0000 /* ld %r11,xxx+0@l(%r12) */
143 #define MTCTR_R11 0x7d6903a6 /* mtctr %r11 */
144 #define LD_R2_0R12 0xe84c0000 /* ld %r2,xxx+8@l(%r12) */
145 /* ld %r11,xxx+16@l(%r12) */
146 #define BCTR 0x4e800420 /* bctr */
149 #define ADDIS_R12_R12 0x3d8c0000 /* addis %r12,%r12,off@ha */
150 #define ADDI_R12_R12 0x398c0000 /* addi %r12,%r12,off@l */
151 #define ADDIS_R2_R2 0x3c420000 /* addis %r2,%r2,off@ha */
152 #define ADDI_R2_R2 0x38420000 /* addi %r2,%r2,off@l */
154 #define LD_R11_0R2 0xe9620000 /* ld %r11,xxx+0(%r2) */
155 #define LD_R2_0R2 0xe8420000 /* ld %r2,xxx+0(%r2) */
157 #define LD_R2_40R1 0xe8410028 /* ld %r2,40(%r1) */
159 /* glink call stub instructions. We enter with the index in R0. */
160 #define GLINK_CALL_STUB_SIZE (16*4)
164 #define MFLR_R12 0x7d8802a6 /* mflr %12 */
165 #define BCL_20_31 0x429f0005 /* bcl 20,31,1f */
167 #define MFLR_R11 0x7d6802a6 /* mflr %11 */
168 #define LD_R2_M16R11 0xe84bfff0 /* ld %2,(0b-1b)(%11) */
169 #define MTLR_R12 0x7d8803a6 /* mtlr %12 */
170 #define ADD_R12_R2_R11 0x7d825a14 /* add %12,%2,%11 */
178 #define NOP 0x60000000
180 /* Some other nops. */
181 #define CROR_151515 0x4def7b82
182 #define CROR_313131 0x4ffffb82
184 /* .glink entries for the first 32k functions are two instructions. */
185 #define LI_R0_0 0x38000000 /* li %r0,0 */
186 #define B_DOT 0x48000000 /* b . */
188 /* After that, we need two instructions to load the index, followed by
190 #define LIS_R0_0 0x3c000000 /* lis %r0,0 */
191 #define ORI_R0_R0_0 0x60000000 /* ori %r0,%r0,0 */
193 /* Instructions used by the save and restore reg functions. */
194 #define STD_R0_0R1 0xf8010000 /* std %r0,0(%r1) */
195 #define STD_R0_0R12 0xf80c0000 /* std %r0,0(%r12) */
196 #define LD_R0_0R1 0xe8010000 /* ld %r0,0(%r1) */
197 #define LD_R0_0R12 0xe80c0000 /* ld %r0,0(%r12) */
198 #define STFD_FR0_0R1 0xd8010000 /* stfd %fr0,0(%r1) */
199 #define LFD_FR0_0R1 0xc8010000 /* lfd %fr0,0(%r1) */
200 #define LI_R12_0 0x39800000 /* li %r12,0 */
201 #define STVX_VR0_R12_R0 0x7c0c01ce /* stvx %v0,%r12,%r0 */
202 #define LVX_VR0_R12_R0 0x7c0c00ce /* lvx %v0,%r12,%r0 */
203 #define MTLR_R0 0x7c0803a6 /* mtlr %r0 */
204 #define BLR 0x4e800020 /* blr */
206 /* Since .opd is an array of descriptors and each entry will end up
207 with identical R_PPC64_RELATIVE relocs, there is really no need to
208 propagate .opd relocs; The dynamic linker should be taught to
209 relocate .opd without reloc entries. */
210 #ifndef NO_OPD_RELOCS
211 #define NO_OPD_RELOCS 0
214 #define ONES(n) (((bfd_vma) 1 << ((n) - 1) << 1) - 1)
216 /* Relocation HOWTO's. */
217 static reloc_howto_type
*ppc64_elf_howto_table
[(int) R_PPC64_max
];
219 static reloc_howto_type ppc64_elf_howto_raw
[] = {
220 /* This reloc does nothing. */
221 HOWTO (R_PPC64_NONE
, /* type */
223 2, /* size (0 = byte, 1 = short, 2 = long) */
225 FALSE
, /* pc_relative */
227 complain_overflow_dont
, /* complain_on_overflow */
228 bfd_elf_generic_reloc
, /* special_function */
229 "R_PPC64_NONE", /* name */
230 FALSE
, /* partial_inplace */
233 FALSE
), /* pcrel_offset */
235 /* A standard 32 bit relocation. */
236 HOWTO (R_PPC64_ADDR32
, /* type */
238 2, /* size (0 = byte, 1 = short, 2 = long) */
240 FALSE
, /* pc_relative */
242 complain_overflow_bitfield
, /* complain_on_overflow */
243 bfd_elf_generic_reloc
, /* special_function */
244 "R_PPC64_ADDR32", /* name */
245 FALSE
, /* partial_inplace */
247 0xffffffff, /* dst_mask */
248 FALSE
), /* pcrel_offset */
250 /* An absolute 26 bit branch; the lower two bits must be zero.
251 FIXME: we don't check that, we just clear them. */
252 HOWTO (R_PPC64_ADDR24
, /* type */
254 2, /* size (0 = byte, 1 = short, 2 = long) */
256 FALSE
, /* pc_relative */
258 complain_overflow_bitfield
, /* complain_on_overflow */
259 bfd_elf_generic_reloc
, /* special_function */
260 "R_PPC64_ADDR24", /* name */
261 FALSE
, /* partial_inplace */
263 0x03fffffc, /* dst_mask */
264 FALSE
), /* pcrel_offset */
266 /* A standard 16 bit relocation. */
267 HOWTO (R_PPC64_ADDR16
, /* type */
269 1, /* size (0 = byte, 1 = short, 2 = long) */
271 FALSE
, /* pc_relative */
273 complain_overflow_bitfield
, /* complain_on_overflow */
274 bfd_elf_generic_reloc
, /* special_function */
275 "R_PPC64_ADDR16", /* name */
276 FALSE
, /* partial_inplace */
278 0xffff, /* dst_mask */
279 FALSE
), /* pcrel_offset */
281 /* A 16 bit relocation without overflow. */
282 HOWTO (R_PPC64_ADDR16_LO
, /* type */
284 1, /* size (0 = byte, 1 = short, 2 = long) */
286 FALSE
, /* pc_relative */
288 complain_overflow_dont
,/* complain_on_overflow */
289 bfd_elf_generic_reloc
, /* special_function */
290 "R_PPC64_ADDR16_LO", /* name */
291 FALSE
, /* partial_inplace */
293 0xffff, /* dst_mask */
294 FALSE
), /* pcrel_offset */
296 /* Bits 16-31 of an address. */
297 HOWTO (R_PPC64_ADDR16_HI
, /* type */
299 1, /* size (0 = byte, 1 = short, 2 = long) */
301 FALSE
, /* pc_relative */
303 complain_overflow_dont
, /* complain_on_overflow */
304 bfd_elf_generic_reloc
, /* special_function */
305 "R_PPC64_ADDR16_HI", /* name */
306 FALSE
, /* partial_inplace */
308 0xffff, /* dst_mask */
309 FALSE
), /* pcrel_offset */
311 /* Bits 16-31 of an address, plus 1 if the contents of the low 16
312 bits, treated as a signed number, is negative. */
313 HOWTO (R_PPC64_ADDR16_HA
, /* type */
315 1, /* size (0 = byte, 1 = short, 2 = long) */
317 FALSE
, /* pc_relative */
319 complain_overflow_dont
, /* complain_on_overflow */
320 ppc64_elf_ha_reloc
, /* special_function */
321 "R_PPC64_ADDR16_HA", /* name */
322 FALSE
, /* partial_inplace */
324 0xffff, /* dst_mask */
325 FALSE
), /* pcrel_offset */
327 /* An absolute 16 bit branch; the lower two bits must be zero.
328 FIXME: we don't check that, we just clear them. */
329 HOWTO (R_PPC64_ADDR14
, /* type */
331 2, /* size (0 = byte, 1 = short, 2 = long) */
333 FALSE
, /* pc_relative */
335 complain_overflow_bitfield
, /* complain_on_overflow */
336 ppc64_elf_branch_reloc
, /* special_function */
337 "R_PPC64_ADDR14", /* name */
338 FALSE
, /* partial_inplace */
340 0x0000fffc, /* dst_mask */
341 FALSE
), /* pcrel_offset */
343 /* An absolute 16 bit branch, for which bit 10 should be set to
344 indicate that the branch is expected to be taken. The lower two
345 bits must be zero. */
346 HOWTO (R_PPC64_ADDR14_BRTAKEN
, /* type */
348 2, /* size (0 = byte, 1 = short, 2 = long) */
350 FALSE
, /* pc_relative */
352 complain_overflow_bitfield
, /* complain_on_overflow */
353 ppc64_elf_brtaken_reloc
, /* special_function */
354 "R_PPC64_ADDR14_BRTAKEN",/* name */
355 FALSE
, /* partial_inplace */
357 0x0000fffc, /* dst_mask */
358 FALSE
), /* pcrel_offset */
360 /* An absolute 16 bit branch, for which bit 10 should be set to
361 indicate that the branch is not expected to be taken. The lower
362 two bits must be zero. */
363 HOWTO (R_PPC64_ADDR14_BRNTAKEN
, /* type */
365 2, /* size (0 = byte, 1 = short, 2 = long) */
367 FALSE
, /* pc_relative */
369 complain_overflow_bitfield
, /* complain_on_overflow */
370 ppc64_elf_brtaken_reloc
, /* special_function */
371 "R_PPC64_ADDR14_BRNTAKEN",/* name */
372 FALSE
, /* partial_inplace */
374 0x0000fffc, /* dst_mask */
375 FALSE
), /* pcrel_offset */
377 /* A relative 26 bit branch; the lower two bits must be zero. */
378 HOWTO (R_PPC64_REL24
, /* type */
380 2, /* size (0 = byte, 1 = short, 2 = long) */
382 TRUE
, /* pc_relative */
384 complain_overflow_signed
, /* complain_on_overflow */
385 ppc64_elf_branch_reloc
, /* special_function */
386 "R_PPC64_REL24", /* name */
387 FALSE
, /* partial_inplace */
389 0x03fffffc, /* dst_mask */
390 TRUE
), /* pcrel_offset */
392 /* A relative 16 bit branch; the lower two bits must be zero. */
393 HOWTO (R_PPC64_REL14
, /* type */
395 2, /* size (0 = byte, 1 = short, 2 = long) */
397 TRUE
, /* pc_relative */
399 complain_overflow_signed
, /* complain_on_overflow */
400 ppc64_elf_branch_reloc
, /* special_function */
401 "R_PPC64_REL14", /* name */
402 FALSE
, /* partial_inplace */
404 0x0000fffc, /* dst_mask */
405 TRUE
), /* pcrel_offset */
407 /* A relative 16 bit branch. Bit 10 should be set to indicate that
408 the branch is expected to be taken. The lower two bits must be
410 HOWTO (R_PPC64_REL14_BRTAKEN
, /* type */
412 2, /* size (0 = byte, 1 = short, 2 = long) */
414 TRUE
, /* pc_relative */
416 complain_overflow_signed
, /* complain_on_overflow */
417 ppc64_elf_brtaken_reloc
, /* special_function */
418 "R_PPC64_REL14_BRTAKEN", /* name */
419 FALSE
, /* partial_inplace */
421 0x0000fffc, /* dst_mask */
422 TRUE
), /* pcrel_offset */
424 /* A relative 16 bit branch. Bit 10 should be set to indicate that
425 the branch is not expected to be taken. The lower two bits must
427 HOWTO (R_PPC64_REL14_BRNTAKEN
, /* type */
429 2, /* size (0 = byte, 1 = short, 2 = long) */
431 TRUE
, /* pc_relative */
433 complain_overflow_signed
, /* complain_on_overflow */
434 ppc64_elf_brtaken_reloc
, /* special_function */
435 "R_PPC64_REL14_BRNTAKEN",/* name */
436 FALSE
, /* partial_inplace */
438 0x0000fffc, /* dst_mask */
439 TRUE
), /* pcrel_offset */
441 /* Like R_PPC64_ADDR16, but referring to the GOT table entry for the
443 HOWTO (R_PPC64_GOT16
, /* type */
445 1, /* size (0 = byte, 1 = short, 2 = long) */
447 FALSE
, /* pc_relative */
449 complain_overflow_signed
, /* complain_on_overflow */
450 ppc64_elf_unhandled_reloc
, /* special_function */
451 "R_PPC64_GOT16", /* name */
452 FALSE
, /* partial_inplace */
454 0xffff, /* dst_mask */
455 FALSE
), /* pcrel_offset */
457 /* Like R_PPC64_ADDR16_LO, but referring to the GOT table entry for
459 HOWTO (R_PPC64_GOT16_LO
, /* type */
461 1, /* size (0 = byte, 1 = short, 2 = long) */
463 FALSE
, /* pc_relative */
465 complain_overflow_dont
, /* complain_on_overflow */
466 ppc64_elf_unhandled_reloc
, /* special_function */
467 "R_PPC64_GOT16_LO", /* name */
468 FALSE
, /* partial_inplace */
470 0xffff, /* dst_mask */
471 FALSE
), /* pcrel_offset */
473 /* Like R_PPC64_ADDR16_HI, but referring to the GOT table entry for
475 HOWTO (R_PPC64_GOT16_HI
, /* type */
477 1, /* size (0 = byte, 1 = short, 2 = long) */
479 FALSE
, /* pc_relative */
481 complain_overflow_dont
,/* complain_on_overflow */
482 ppc64_elf_unhandled_reloc
, /* special_function */
483 "R_PPC64_GOT16_HI", /* name */
484 FALSE
, /* partial_inplace */
486 0xffff, /* dst_mask */
487 FALSE
), /* pcrel_offset */
489 /* Like R_PPC64_ADDR16_HA, but referring to the GOT table entry for
491 HOWTO (R_PPC64_GOT16_HA
, /* type */
493 1, /* size (0 = byte, 1 = short, 2 = long) */
495 FALSE
, /* pc_relative */
497 complain_overflow_dont
,/* complain_on_overflow */
498 ppc64_elf_unhandled_reloc
, /* special_function */
499 "R_PPC64_GOT16_HA", /* name */
500 FALSE
, /* partial_inplace */
502 0xffff, /* dst_mask */
503 FALSE
), /* pcrel_offset */
505 /* This is used only by the dynamic linker. The symbol should exist
506 both in the object being run and in some shared library. The
507 dynamic linker copies the data addressed by the symbol from the
508 shared library into the object, because the object being
509 run has to have the data at some particular address. */
510 HOWTO (R_PPC64_COPY
, /* type */
512 0, /* this one is variable size */
514 FALSE
, /* pc_relative */
516 complain_overflow_dont
, /* complain_on_overflow */
517 ppc64_elf_unhandled_reloc
, /* special_function */
518 "R_PPC64_COPY", /* name */
519 FALSE
, /* partial_inplace */
522 FALSE
), /* pcrel_offset */
524 /* Like R_PPC64_ADDR64, but used when setting global offset table
526 HOWTO (R_PPC64_GLOB_DAT
, /* type */
528 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
530 FALSE
, /* pc_relative */
532 complain_overflow_dont
, /* complain_on_overflow */
533 ppc64_elf_unhandled_reloc
, /* special_function */
534 "R_PPC64_GLOB_DAT", /* name */
535 FALSE
, /* partial_inplace */
537 ONES (64), /* dst_mask */
538 FALSE
), /* pcrel_offset */
540 /* Created by the link editor. Marks a procedure linkage table
541 entry for a symbol. */
542 HOWTO (R_PPC64_JMP_SLOT
, /* type */
544 0, /* size (0 = byte, 1 = short, 2 = long) */
546 FALSE
, /* pc_relative */
548 complain_overflow_dont
, /* complain_on_overflow */
549 ppc64_elf_unhandled_reloc
, /* special_function */
550 "R_PPC64_JMP_SLOT", /* name */
551 FALSE
, /* partial_inplace */
554 FALSE
), /* pcrel_offset */
556 /* Used only by the dynamic linker. When the object is run, this
557 doubleword64 is set to the load address of the object, plus the
559 HOWTO (R_PPC64_RELATIVE
, /* type */
561 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
563 FALSE
, /* pc_relative */
565 complain_overflow_dont
, /* complain_on_overflow */
566 bfd_elf_generic_reloc
, /* special_function */
567 "R_PPC64_RELATIVE", /* name */
568 FALSE
, /* partial_inplace */
570 ONES (64), /* dst_mask */
571 FALSE
), /* pcrel_offset */
573 /* Like R_PPC64_ADDR32, but may be unaligned. */
574 HOWTO (R_PPC64_UADDR32
, /* type */
576 2, /* size (0 = byte, 1 = short, 2 = long) */
578 FALSE
, /* pc_relative */
580 complain_overflow_bitfield
, /* complain_on_overflow */
581 bfd_elf_generic_reloc
, /* special_function */
582 "R_PPC64_UADDR32", /* name */
583 FALSE
, /* partial_inplace */
585 0xffffffff, /* dst_mask */
586 FALSE
), /* pcrel_offset */
588 /* Like R_PPC64_ADDR16, but may be unaligned. */
589 HOWTO (R_PPC64_UADDR16
, /* type */
591 1, /* size (0 = byte, 1 = short, 2 = long) */
593 FALSE
, /* pc_relative */
595 complain_overflow_bitfield
, /* complain_on_overflow */
596 bfd_elf_generic_reloc
, /* special_function */
597 "R_PPC64_UADDR16", /* name */
598 FALSE
, /* partial_inplace */
600 0xffff, /* dst_mask */
601 FALSE
), /* pcrel_offset */
603 /* 32-bit PC relative. */
604 HOWTO (R_PPC64_REL32
, /* type */
606 2, /* size (0 = byte, 1 = short, 2 = long) */
608 TRUE
, /* pc_relative */
610 /* FIXME: Verify. Was complain_overflow_bitfield. */
611 complain_overflow_signed
, /* complain_on_overflow */
612 bfd_elf_generic_reloc
, /* special_function */
613 "R_PPC64_REL32", /* name */
614 FALSE
, /* partial_inplace */
616 0xffffffff, /* dst_mask */
617 TRUE
), /* pcrel_offset */
619 /* 32-bit relocation to the symbol's procedure linkage table. */
620 HOWTO (R_PPC64_PLT32
, /* type */
622 2, /* size (0 = byte, 1 = short, 2 = long) */
624 FALSE
, /* pc_relative */
626 complain_overflow_bitfield
, /* complain_on_overflow */
627 ppc64_elf_unhandled_reloc
, /* special_function */
628 "R_PPC64_PLT32", /* name */
629 FALSE
, /* partial_inplace */
631 0xffffffff, /* dst_mask */
632 FALSE
), /* pcrel_offset */
634 /* 32-bit PC relative relocation to the symbol's procedure linkage table.
635 FIXME: R_PPC64_PLTREL32 not supported. */
636 HOWTO (R_PPC64_PLTREL32
, /* type */
638 2, /* size (0 = byte, 1 = short, 2 = long) */
640 TRUE
, /* pc_relative */
642 complain_overflow_signed
, /* complain_on_overflow */
643 bfd_elf_generic_reloc
, /* special_function */
644 "R_PPC64_PLTREL32", /* name */
645 FALSE
, /* partial_inplace */
647 0xffffffff, /* dst_mask */
648 TRUE
), /* pcrel_offset */
650 /* Like R_PPC64_ADDR16_LO, but referring to the PLT table entry for
652 HOWTO (R_PPC64_PLT16_LO
, /* type */
654 1, /* size (0 = byte, 1 = short, 2 = long) */
656 FALSE
, /* pc_relative */
658 complain_overflow_dont
, /* complain_on_overflow */
659 ppc64_elf_unhandled_reloc
, /* special_function */
660 "R_PPC64_PLT16_LO", /* name */
661 FALSE
, /* partial_inplace */
663 0xffff, /* dst_mask */
664 FALSE
), /* pcrel_offset */
666 /* Like R_PPC64_ADDR16_HI, but referring to the PLT table entry for
668 HOWTO (R_PPC64_PLT16_HI
, /* type */
670 1, /* size (0 = byte, 1 = short, 2 = long) */
672 FALSE
, /* pc_relative */
674 complain_overflow_dont
, /* complain_on_overflow */
675 ppc64_elf_unhandled_reloc
, /* special_function */
676 "R_PPC64_PLT16_HI", /* name */
677 FALSE
, /* partial_inplace */
679 0xffff, /* dst_mask */
680 FALSE
), /* pcrel_offset */
682 /* Like R_PPC64_ADDR16_HA, but referring to the PLT table entry for
684 HOWTO (R_PPC64_PLT16_HA
, /* type */
686 1, /* size (0 = byte, 1 = short, 2 = long) */
688 FALSE
, /* pc_relative */
690 complain_overflow_dont
, /* complain_on_overflow */
691 ppc64_elf_unhandled_reloc
, /* special_function */
692 "R_PPC64_PLT16_HA", /* name */
693 FALSE
, /* partial_inplace */
695 0xffff, /* dst_mask */
696 FALSE
), /* pcrel_offset */
698 /* 16-bit section relative relocation. */
699 HOWTO (R_PPC64_SECTOFF
, /* type */
701 1, /* size (0 = byte, 1 = short, 2 = long) */
703 FALSE
, /* pc_relative */
705 complain_overflow_bitfield
, /* complain_on_overflow */
706 ppc64_elf_sectoff_reloc
, /* special_function */
707 "R_PPC64_SECTOFF", /* name */
708 FALSE
, /* partial_inplace */
710 0xffff, /* dst_mask */
711 FALSE
), /* pcrel_offset */
713 /* Like R_PPC64_SECTOFF, but no overflow warning. */
714 HOWTO (R_PPC64_SECTOFF_LO
, /* type */
716 1, /* size (0 = byte, 1 = short, 2 = long) */
718 FALSE
, /* pc_relative */
720 complain_overflow_dont
, /* complain_on_overflow */
721 ppc64_elf_sectoff_reloc
, /* special_function */
722 "R_PPC64_SECTOFF_LO", /* name */
723 FALSE
, /* partial_inplace */
725 0xffff, /* dst_mask */
726 FALSE
), /* pcrel_offset */
728 /* 16-bit upper half section relative relocation. */
729 HOWTO (R_PPC64_SECTOFF_HI
, /* type */
731 1, /* size (0 = byte, 1 = short, 2 = long) */
733 FALSE
, /* pc_relative */
735 complain_overflow_dont
, /* complain_on_overflow */
736 ppc64_elf_sectoff_reloc
, /* special_function */
737 "R_PPC64_SECTOFF_HI", /* name */
738 FALSE
, /* partial_inplace */
740 0xffff, /* dst_mask */
741 FALSE
), /* pcrel_offset */
743 /* 16-bit upper half adjusted section relative relocation. */
744 HOWTO (R_PPC64_SECTOFF_HA
, /* type */
746 1, /* size (0 = byte, 1 = short, 2 = long) */
748 FALSE
, /* pc_relative */
750 complain_overflow_dont
, /* complain_on_overflow */
751 ppc64_elf_sectoff_ha_reloc
, /* special_function */
752 "R_PPC64_SECTOFF_HA", /* name */
753 FALSE
, /* partial_inplace */
755 0xffff, /* dst_mask */
756 FALSE
), /* pcrel_offset */
758 /* Like R_PPC64_REL24 without touching the two least significant bits. */
759 HOWTO (R_PPC64_REL30
, /* type */
761 2, /* size (0 = byte, 1 = short, 2 = long) */
763 TRUE
, /* pc_relative */
765 complain_overflow_dont
, /* complain_on_overflow */
766 bfd_elf_generic_reloc
, /* special_function */
767 "R_PPC64_REL30", /* name */
768 FALSE
, /* partial_inplace */
770 0xfffffffc, /* dst_mask */
771 TRUE
), /* pcrel_offset */
773 /* Relocs in the 64-bit PowerPC ELF ABI, not in the 32-bit ABI. */
775 /* A standard 64-bit relocation. */
776 HOWTO (R_PPC64_ADDR64
, /* type */
778 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
780 FALSE
, /* pc_relative */
782 complain_overflow_dont
, /* complain_on_overflow */
783 bfd_elf_generic_reloc
, /* special_function */
784 "R_PPC64_ADDR64", /* name */
785 FALSE
, /* partial_inplace */
787 ONES (64), /* dst_mask */
788 FALSE
), /* pcrel_offset */
790 /* The bits 32-47 of an address. */
791 HOWTO (R_PPC64_ADDR16_HIGHER
, /* type */
793 1, /* size (0 = byte, 1 = short, 2 = long) */
795 FALSE
, /* pc_relative */
797 complain_overflow_dont
, /* complain_on_overflow */
798 bfd_elf_generic_reloc
, /* special_function */
799 "R_PPC64_ADDR16_HIGHER", /* name */
800 FALSE
, /* partial_inplace */
802 0xffff, /* dst_mask */
803 FALSE
), /* pcrel_offset */
805 /* The bits 32-47 of an address, plus 1 if the contents of the low
806 16 bits, treated as a signed number, is negative. */
807 HOWTO (R_PPC64_ADDR16_HIGHERA
, /* type */
809 1, /* size (0 = byte, 1 = short, 2 = long) */
811 FALSE
, /* pc_relative */
813 complain_overflow_dont
, /* complain_on_overflow */
814 ppc64_elf_ha_reloc
, /* special_function */
815 "R_PPC64_ADDR16_HIGHERA", /* name */
816 FALSE
, /* partial_inplace */
818 0xffff, /* dst_mask */
819 FALSE
), /* pcrel_offset */
821 /* The bits 48-63 of an address. */
822 HOWTO (R_PPC64_ADDR16_HIGHEST
,/* type */
824 1, /* size (0 = byte, 1 = short, 2 = long) */
826 FALSE
, /* pc_relative */
828 complain_overflow_dont
, /* complain_on_overflow */
829 bfd_elf_generic_reloc
, /* special_function */
830 "R_PPC64_ADDR16_HIGHEST", /* name */
831 FALSE
, /* partial_inplace */
833 0xffff, /* dst_mask */
834 FALSE
), /* pcrel_offset */
836 /* The bits 48-63 of an address, plus 1 if the contents of the low
837 16 bits, treated as a signed number, is negative. */
838 HOWTO (R_PPC64_ADDR16_HIGHESTA
,/* type */
840 1, /* size (0 = byte, 1 = short, 2 = long) */
842 FALSE
, /* pc_relative */
844 complain_overflow_dont
, /* complain_on_overflow */
845 ppc64_elf_ha_reloc
, /* special_function */
846 "R_PPC64_ADDR16_HIGHESTA", /* name */
847 FALSE
, /* partial_inplace */
849 0xffff, /* dst_mask */
850 FALSE
), /* pcrel_offset */
852 /* Like ADDR64, but may be unaligned. */
853 HOWTO (R_PPC64_UADDR64
, /* type */
855 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
857 FALSE
, /* pc_relative */
859 complain_overflow_dont
, /* complain_on_overflow */
860 bfd_elf_generic_reloc
, /* special_function */
861 "R_PPC64_UADDR64", /* name */
862 FALSE
, /* partial_inplace */
864 ONES (64), /* dst_mask */
865 FALSE
), /* pcrel_offset */
867 /* 64-bit relative relocation. */
868 HOWTO (R_PPC64_REL64
, /* type */
870 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
872 TRUE
, /* pc_relative */
874 complain_overflow_dont
, /* complain_on_overflow */
875 bfd_elf_generic_reloc
, /* special_function */
876 "R_PPC64_REL64", /* name */
877 FALSE
, /* partial_inplace */
879 ONES (64), /* dst_mask */
880 TRUE
), /* pcrel_offset */
882 /* 64-bit relocation to the symbol's procedure linkage table. */
883 HOWTO (R_PPC64_PLT64
, /* type */
885 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
887 FALSE
, /* pc_relative */
889 complain_overflow_dont
, /* complain_on_overflow */
890 ppc64_elf_unhandled_reloc
, /* special_function */
891 "R_PPC64_PLT64", /* name */
892 FALSE
, /* partial_inplace */
894 ONES (64), /* dst_mask */
895 FALSE
), /* pcrel_offset */
897 /* 64-bit PC relative relocation to the symbol's procedure linkage
899 /* FIXME: R_PPC64_PLTREL64 not supported. */
900 HOWTO (R_PPC64_PLTREL64
, /* type */
902 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
904 TRUE
, /* pc_relative */
906 complain_overflow_dont
, /* complain_on_overflow */
907 ppc64_elf_unhandled_reloc
, /* special_function */
908 "R_PPC64_PLTREL64", /* name */
909 FALSE
, /* partial_inplace */
911 ONES (64), /* dst_mask */
912 TRUE
), /* pcrel_offset */
914 /* 16 bit TOC-relative relocation. */
916 /* R_PPC64_TOC16 47 half16* S + A - .TOC. */
917 HOWTO (R_PPC64_TOC16
, /* type */
919 1, /* size (0 = byte, 1 = short, 2 = long) */
921 FALSE
, /* pc_relative */
923 complain_overflow_signed
, /* complain_on_overflow */
924 ppc64_elf_toc_reloc
, /* special_function */
925 "R_PPC64_TOC16", /* name */
926 FALSE
, /* partial_inplace */
928 0xffff, /* dst_mask */
929 FALSE
), /* pcrel_offset */
931 /* 16 bit TOC-relative relocation without overflow. */
933 /* R_PPC64_TOC16_LO 48 half16 #lo (S + A - .TOC.) */
934 HOWTO (R_PPC64_TOC16_LO
, /* type */
936 1, /* size (0 = byte, 1 = short, 2 = long) */
938 FALSE
, /* pc_relative */
940 complain_overflow_dont
, /* complain_on_overflow */
941 ppc64_elf_toc_reloc
, /* special_function */
942 "R_PPC64_TOC16_LO", /* name */
943 FALSE
, /* partial_inplace */
945 0xffff, /* dst_mask */
946 FALSE
), /* pcrel_offset */
948 /* 16 bit TOC-relative relocation, high 16 bits. */
950 /* R_PPC64_TOC16_HI 49 half16 #hi (S + A - .TOC.) */
951 HOWTO (R_PPC64_TOC16_HI
, /* type */
953 1, /* size (0 = byte, 1 = short, 2 = long) */
955 FALSE
, /* pc_relative */
957 complain_overflow_dont
, /* complain_on_overflow */
958 ppc64_elf_toc_reloc
, /* special_function */
959 "R_PPC64_TOC16_HI", /* name */
960 FALSE
, /* partial_inplace */
962 0xffff, /* dst_mask */
963 FALSE
), /* pcrel_offset */
965 /* 16 bit TOC-relative relocation, high 16 bits, plus 1 if the
966 contents of the low 16 bits, treated as a signed number, is
969 /* R_PPC64_TOC16_HA 50 half16 #ha (S + A - .TOC.) */
970 HOWTO (R_PPC64_TOC16_HA
, /* type */
972 1, /* size (0 = byte, 1 = short, 2 = long) */
974 FALSE
, /* pc_relative */
976 complain_overflow_dont
, /* complain_on_overflow */
977 ppc64_elf_toc_ha_reloc
, /* special_function */
978 "R_PPC64_TOC16_HA", /* name */
979 FALSE
, /* partial_inplace */
981 0xffff, /* dst_mask */
982 FALSE
), /* pcrel_offset */
984 /* 64-bit relocation; insert value of TOC base (.TOC.). */
986 /* R_PPC64_TOC 51 doubleword64 .TOC. */
987 HOWTO (R_PPC64_TOC
, /* type */
989 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
991 FALSE
, /* pc_relative */
993 complain_overflow_bitfield
, /* complain_on_overflow */
994 ppc64_elf_toc64_reloc
, /* special_function */
995 "R_PPC64_TOC", /* name */
996 FALSE
, /* partial_inplace */
998 ONES (64), /* dst_mask */
999 FALSE
), /* pcrel_offset */
1001 /* Like R_PPC64_GOT16, but also informs the link editor that the
1002 value to relocate may (!) refer to a PLT entry which the link
1003 editor (a) may replace with the symbol value. If the link editor
1004 is unable to fully resolve the symbol, it may (b) create a PLT
1005 entry and store the address to the new PLT entry in the GOT.
1006 This permits lazy resolution of function symbols at run time.
1007 The link editor may also skip all of this and just (c) emit a
1008 R_PPC64_GLOB_DAT to tie the symbol to the GOT entry. */
1009 /* FIXME: R_PPC64_PLTGOT16 not implemented. */
1010 HOWTO (R_PPC64_PLTGOT16
, /* type */
1012 1, /* size (0 = byte, 1 = short, 2 = long) */
1014 FALSE
, /* pc_relative */
1016 complain_overflow_signed
, /* complain_on_overflow */
1017 ppc64_elf_unhandled_reloc
, /* special_function */
1018 "R_PPC64_PLTGOT16", /* name */
1019 FALSE
, /* partial_inplace */
1021 0xffff, /* dst_mask */
1022 FALSE
), /* pcrel_offset */
1024 /* Like R_PPC64_PLTGOT16, but without overflow. */
1025 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1026 HOWTO (R_PPC64_PLTGOT16_LO
, /* type */
1028 1, /* size (0 = byte, 1 = short, 2 = long) */
1030 FALSE
, /* pc_relative */
1032 complain_overflow_dont
, /* complain_on_overflow */
1033 ppc64_elf_unhandled_reloc
, /* special_function */
1034 "R_PPC64_PLTGOT16_LO", /* name */
1035 FALSE
, /* partial_inplace */
1037 0xffff, /* dst_mask */
1038 FALSE
), /* pcrel_offset */
1040 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address. */
1041 /* FIXME: R_PPC64_PLTGOT16_HI not implemented. */
1042 HOWTO (R_PPC64_PLTGOT16_HI
, /* type */
1043 16, /* rightshift */
1044 1, /* size (0 = byte, 1 = short, 2 = long) */
1046 FALSE
, /* pc_relative */
1048 complain_overflow_dont
, /* complain_on_overflow */
1049 ppc64_elf_unhandled_reloc
, /* special_function */
1050 "R_PPC64_PLTGOT16_HI", /* name */
1051 FALSE
, /* partial_inplace */
1053 0xffff, /* dst_mask */
1054 FALSE
), /* pcrel_offset */
1056 /* Like R_PPC64_PLT_GOT16, but using bits 16-31 of the address, plus
1057 1 if the contents of the low 16 bits, treated as a signed number,
1059 /* FIXME: R_PPC64_PLTGOT16_HA not implemented. */
1060 HOWTO (R_PPC64_PLTGOT16_HA
, /* type */
1061 16, /* rightshift */
1062 1, /* size (0 = byte, 1 = short, 2 = long) */
1064 FALSE
, /* pc_relative */
1066 complain_overflow_dont
,/* complain_on_overflow */
1067 ppc64_elf_unhandled_reloc
, /* special_function */
1068 "R_PPC64_PLTGOT16_HA", /* name */
1069 FALSE
, /* partial_inplace */
1071 0xffff, /* dst_mask */
1072 FALSE
), /* pcrel_offset */
1074 /* Like R_PPC64_ADDR16, but for instructions with a DS field. */
1075 HOWTO (R_PPC64_ADDR16_DS
, /* type */
1077 1, /* size (0 = byte, 1 = short, 2 = long) */
1079 FALSE
, /* pc_relative */
1081 complain_overflow_bitfield
, /* complain_on_overflow */
1082 bfd_elf_generic_reloc
, /* special_function */
1083 "R_PPC64_ADDR16_DS", /* name */
1084 FALSE
, /* partial_inplace */
1086 0xfffc, /* dst_mask */
1087 FALSE
), /* pcrel_offset */
1089 /* Like R_PPC64_ADDR16_LO, but for instructions with a DS field. */
1090 HOWTO (R_PPC64_ADDR16_LO_DS
, /* type */
1092 1, /* size (0 = byte, 1 = short, 2 = long) */
1094 FALSE
, /* pc_relative */
1096 complain_overflow_dont
,/* complain_on_overflow */
1097 bfd_elf_generic_reloc
, /* special_function */
1098 "R_PPC64_ADDR16_LO_DS",/* name */
1099 FALSE
, /* partial_inplace */
1101 0xfffc, /* dst_mask */
1102 FALSE
), /* pcrel_offset */
1104 /* Like R_PPC64_GOT16, but for instructions with a DS field. */
1105 HOWTO (R_PPC64_GOT16_DS
, /* type */
1107 1, /* size (0 = byte, 1 = short, 2 = long) */
1109 FALSE
, /* pc_relative */
1111 complain_overflow_signed
, /* complain_on_overflow */
1112 ppc64_elf_unhandled_reloc
, /* special_function */
1113 "R_PPC64_GOT16_DS", /* name */
1114 FALSE
, /* partial_inplace */
1116 0xfffc, /* dst_mask */
1117 FALSE
), /* pcrel_offset */
1119 /* Like R_PPC64_GOT16_LO, but for instructions with a DS field. */
1120 HOWTO (R_PPC64_GOT16_LO_DS
, /* type */
1122 1, /* size (0 = byte, 1 = short, 2 = long) */
1124 FALSE
, /* pc_relative */
1126 complain_overflow_dont
, /* complain_on_overflow */
1127 ppc64_elf_unhandled_reloc
, /* special_function */
1128 "R_PPC64_GOT16_LO_DS", /* name */
1129 FALSE
, /* partial_inplace */
1131 0xfffc, /* dst_mask */
1132 FALSE
), /* pcrel_offset */
1134 /* Like R_PPC64_PLT16_LO, but for instructions with a DS field. */
1135 HOWTO (R_PPC64_PLT16_LO_DS
, /* type */
1137 1, /* size (0 = byte, 1 = short, 2 = long) */
1139 FALSE
, /* pc_relative */
1141 complain_overflow_dont
, /* complain_on_overflow */
1142 ppc64_elf_unhandled_reloc
, /* special_function */
1143 "R_PPC64_PLT16_LO_DS", /* name */
1144 FALSE
, /* partial_inplace */
1146 0xfffc, /* dst_mask */
1147 FALSE
), /* pcrel_offset */
1149 /* Like R_PPC64_SECTOFF, but for instructions with a DS field. */
1150 HOWTO (R_PPC64_SECTOFF_DS
, /* type */
1152 1, /* size (0 = byte, 1 = short, 2 = long) */
1154 FALSE
, /* pc_relative */
1156 complain_overflow_bitfield
, /* complain_on_overflow */
1157 ppc64_elf_sectoff_reloc
, /* special_function */
1158 "R_PPC64_SECTOFF_DS", /* name */
1159 FALSE
, /* partial_inplace */
1161 0xfffc, /* dst_mask */
1162 FALSE
), /* pcrel_offset */
1164 /* Like R_PPC64_SECTOFF_LO, but for instructions with a DS field. */
1165 HOWTO (R_PPC64_SECTOFF_LO_DS
, /* type */
1167 1, /* size (0 = byte, 1 = short, 2 = long) */
1169 FALSE
, /* pc_relative */
1171 complain_overflow_dont
, /* complain_on_overflow */
1172 ppc64_elf_sectoff_reloc
, /* special_function */
1173 "R_PPC64_SECTOFF_LO_DS",/* name */
1174 FALSE
, /* partial_inplace */
1176 0xfffc, /* dst_mask */
1177 FALSE
), /* pcrel_offset */
1179 /* Like R_PPC64_TOC16, but for instructions with a DS field. */
1180 HOWTO (R_PPC64_TOC16_DS
, /* type */
1182 1, /* size (0 = byte, 1 = short, 2 = long) */
1184 FALSE
, /* pc_relative */
1186 complain_overflow_signed
, /* complain_on_overflow */
1187 ppc64_elf_toc_reloc
, /* special_function */
1188 "R_PPC64_TOC16_DS", /* name */
1189 FALSE
, /* partial_inplace */
1191 0xfffc, /* dst_mask */
1192 FALSE
), /* pcrel_offset */
1194 /* Like R_PPC64_TOC16_LO, but for instructions with a DS field. */
1195 HOWTO (R_PPC64_TOC16_LO_DS
, /* type */
1197 1, /* size (0 = byte, 1 = short, 2 = long) */
1199 FALSE
, /* pc_relative */
1201 complain_overflow_dont
, /* complain_on_overflow */
1202 ppc64_elf_toc_reloc
, /* special_function */
1203 "R_PPC64_TOC16_LO_DS", /* name */
1204 FALSE
, /* partial_inplace */
1206 0xfffc, /* dst_mask */
1207 FALSE
), /* pcrel_offset */
1209 /* Like R_PPC64_PLTGOT16, but for instructions with a DS field. */
1210 /* FIXME: R_PPC64_PLTGOT16_DS not implemented. */
1211 HOWTO (R_PPC64_PLTGOT16_DS
, /* type */
1213 1, /* size (0 = byte, 1 = short, 2 = long) */
1215 FALSE
, /* pc_relative */
1217 complain_overflow_signed
, /* complain_on_overflow */
1218 ppc64_elf_unhandled_reloc
, /* special_function */
1219 "R_PPC64_PLTGOT16_DS", /* name */
1220 FALSE
, /* partial_inplace */
1222 0xfffc, /* dst_mask */
1223 FALSE
), /* pcrel_offset */
1225 /* Like R_PPC64_PLTGOT16_LO, but for instructions with a DS field. */
1226 /* FIXME: R_PPC64_PLTGOT16_LO not implemented. */
1227 HOWTO (R_PPC64_PLTGOT16_LO_DS
,/* type */
1229 1, /* size (0 = byte, 1 = short, 2 = long) */
1231 FALSE
, /* pc_relative */
1233 complain_overflow_dont
, /* complain_on_overflow */
1234 ppc64_elf_unhandled_reloc
, /* special_function */
1235 "R_PPC64_PLTGOT16_LO_DS",/* name */
1236 FALSE
, /* partial_inplace */
1238 0xfffc, /* dst_mask */
1239 FALSE
), /* pcrel_offset */
1241 /* Marker relocs for TLS. */
1244 2, /* size (0 = byte, 1 = short, 2 = long) */
1246 FALSE
, /* pc_relative */
1248 complain_overflow_dont
, /* complain_on_overflow */
1249 bfd_elf_generic_reloc
, /* special_function */
1250 "R_PPC64_TLS", /* name */
1251 FALSE
, /* partial_inplace */
1254 FALSE
), /* pcrel_offset */
1256 HOWTO (R_PPC64_TLSGD
,
1258 2, /* size (0 = byte, 1 = short, 2 = long) */
1260 FALSE
, /* pc_relative */
1262 complain_overflow_dont
, /* complain_on_overflow */
1263 bfd_elf_generic_reloc
, /* special_function */
1264 "R_PPC64_TLSGD", /* name */
1265 FALSE
, /* partial_inplace */
1268 FALSE
), /* pcrel_offset */
1270 HOWTO (R_PPC64_TLSLD
,
1272 2, /* size (0 = byte, 1 = short, 2 = long) */
1274 FALSE
, /* pc_relative */
1276 complain_overflow_dont
, /* complain_on_overflow */
1277 bfd_elf_generic_reloc
, /* special_function */
1278 "R_PPC64_TLSLD", /* name */
1279 FALSE
, /* partial_inplace */
1282 FALSE
), /* pcrel_offset */
1284 /* Computes the load module index of the load module that contains the
1285 definition of its TLS sym. */
1286 HOWTO (R_PPC64_DTPMOD64
,
1288 4, /* size (0 = byte, 1 = short, 2 = long) */
1290 FALSE
, /* pc_relative */
1292 complain_overflow_dont
, /* complain_on_overflow */
1293 ppc64_elf_unhandled_reloc
, /* special_function */
1294 "R_PPC64_DTPMOD64", /* name */
1295 FALSE
, /* partial_inplace */
1297 ONES (64), /* dst_mask */
1298 FALSE
), /* pcrel_offset */
1300 /* Computes a dtv-relative displacement, the difference between the value
1301 of sym+add and the base address of the thread-local storage block that
1302 contains the definition of sym, minus 0x8000. */
1303 HOWTO (R_PPC64_DTPREL64
,
1305 4, /* size (0 = byte, 1 = short, 2 = long) */
1307 FALSE
, /* pc_relative */
1309 complain_overflow_dont
, /* complain_on_overflow */
1310 ppc64_elf_unhandled_reloc
, /* special_function */
1311 "R_PPC64_DTPREL64", /* name */
1312 FALSE
, /* partial_inplace */
1314 ONES (64), /* dst_mask */
1315 FALSE
), /* pcrel_offset */
1317 /* A 16 bit dtprel reloc. */
1318 HOWTO (R_PPC64_DTPREL16
,
1320 1, /* size (0 = byte, 1 = short, 2 = long) */
1322 FALSE
, /* pc_relative */
1324 complain_overflow_signed
, /* complain_on_overflow */
1325 ppc64_elf_unhandled_reloc
, /* special_function */
1326 "R_PPC64_DTPREL16", /* name */
1327 FALSE
, /* partial_inplace */
1329 0xffff, /* dst_mask */
1330 FALSE
), /* pcrel_offset */
1332 /* Like DTPREL16, but no overflow. */
1333 HOWTO (R_PPC64_DTPREL16_LO
,
1335 1, /* size (0 = byte, 1 = short, 2 = long) */
1337 FALSE
, /* pc_relative */
1339 complain_overflow_dont
, /* complain_on_overflow */
1340 ppc64_elf_unhandled_reloc
, /* special_function */
1341 "R_PPC64_DTPREL16_LO", /* name */
1342 FALSE
, /* partial_inplace */
1344 0xffff, /* dst_mask */
1345 FALSE
), /* pcrel_offset */
1347 /* Like DTPREL16_LO, but next higher group of 16 bits. */
1348 HOWTO (R_PPC64_DTPREL16_HI
,
1349 16, /* rightshift */
1350 1, /* size (0 = byte, 1 = short, 2 = long) */
1352 FALSE
, /* pc_relative */
1354 complain_overflow_dont
, /* complain_on_overflow */
1355 ppc64_elf_unhandled_reloc
, /* special_function */
1356 "R_PPC64_DTPREL16_HI", /* name */
1357 FALSE
, /* partial_inplace */
1359 0xffff, /* dst_mask */
1360 FALSE
), /* pcrel_offset */
1362 /* Like DTPREL16_HI, but adjust for low 16 bits. */
1363 HOWTO (R_PPC64_DTPREL16_HA
,
1364 16, /* rightshift */
1365 1, /* size (0 = byte, 1 = short, 2 = long) */
1367 FALSE
, /* pc_relative */
1369 complain_overflow_dont
, /* complain_on_overflow */
1370 ppc64_elf_unhandled_reloc
, /* special_function */
1371 "R_PPC64_DTPREL16_HA", /* name */
1372 FALSE
, /* partial_inplace */
1374 0xffff, /* dst_mask */
1375 FALSE
), /* pcrel_offset */
1377 /* Like DTPREL16_HI, but next higher group of 16 bits. */
1378 HOWTO (R_PPC64_DTPREL16_HIGHER
,
1379 32, /* rightshift */
1380 1, /* size (0 = byte, 1 = short, 2 = long) */
1382 FALSE
, /* pc_relative */
1384 complain_overflow_dont
, /* complain_on_overflow */
1385 ppc64_elf_unhandled_reloc
, /* special_function */
1386 "R_PPC64_DTPREL16_HIGHER", /* name */
1387 FALSE
, /* partial_inplace */
1389 0xffff, /* dst_mask */
1390 FALSE
), /* pcrel_offset */
1392 /* Like DTPREL16_HIGHER, but adjust for low 16 bits. */
1393 HOWTO (R_PPC64_DTPREL16_HIGHERA
,
1394 32, /* rightshift */
1395 1, /* size (0 = byte, 1 = short, 2 = long) */
1397 FALSE
, /* pc_relative */
1399 complain_overflow_dont
, /* complain_on_overflow */
1400 ppc64_elf_unhandled_reloc
, /* special_function */
1401 "R_PPC64_DTPREL16_HIGHERA", /* name */
1402 FALSE
, /* partial_inplace */
1404 0xffff, /* dst_mask */
1405 FALSE
), /* pcrel_offset */
1407 /* Like DTPREL16_HIGHER, but next higher group of 16 bits. */
1408 HOWTO (R_PPC64_DTPREL16_HIGHEST
,
1409 48, /* rightshift */
1410 1, /* size (0 = byte, 1 = short, 2 = long) */
1412 FALSE
, /* pc_relative */
1414 complain_overflow_dont
, /* complain_on_overflow */
1415 ppc64_elf_unhandled_reloc
, /* special_function */
1416 "R_PPC64_DTPREL16_HIGHEST", /* name */
1417 FALSE
, /* partial_inplace */
1419 0xffff, /* dst_mask */
1420 FALSE
), /* pcrel_offset */
1422 /* Like DTPREL16_HIGHEST, but adjust for low 16 bits. */
1423 HOWTO (R_PPC64_DTPREL16_HIGHESTA
,
1424 48, /* rightshift */
1425 1, /* size (0 = byte, 1 = short, 2 = long) */
1427 FALSE
, /* pc_relative */
1429 complain_overflow_dont
, /* complain_on_overflow */
1430 ppc64_elf_unhandled_reloc
, /* special_function */
1431 "R_PPC64_DTPREL16_HIGHESTA", /* name */
1432 FALSE
, /* partial_inplace */
1434 0xffff, /* dst_mask */
1435 FALSE
), /* pcrel_offset */
1437 /* Like DTPREL16, but for insns with a DS field. */
1438 HOWTO (R_PPC64_DTPREL16_DS
,
1440 1, /* size (0 = byte, 1 = short, 2 = long) */
1442 FALSE
, /* pc_relative */
1444 complain_overflow_signed
, /* complain_on_overflow */
1445 ppc64_elf_unhandled_reloc
, /* special_function */
1446 "R_PPC64_DTPREL16_DS", /* name */
1447 FALSE
, /* partial_inplace */
1449 0xfffc, /* dst_mask */
1450 FALSE
), /* pcrel_offset */
1452 /* Like DTPREL16_DS, but no overflow. */
1453 HOWTO (R_PPC64_DTPREL16_LO_DS
,
1455 1, /* size (0 = byte, 1 = short, 2 = long) */
1457 FALSE
, /* pc_relative */
1459 complain_overflow_dont
, /* complain_on_overflow */
1460 ppc64_elf_unhandled_reloc
, /* special_function */
1461 "R_PPC64_DTPREL16_LO_DS", /* name */
1462 FALSE
, /* partial_inplace */
1464 0xfffc, /* dst_mask */
1465 FALSE
), /* pcrel_offset */
1467 /* Computes a tp-relative displacement, the difference between the value of
1468 sym+add and the value of the thread pointer (r13). */
1469 HOWTO (R_PPC64_TPREL64
,
1471 4, /* size (0 = byte, 1 = short, 2 = long) */
1473 FALSE
, /* pc_relative */
1475 complain_overflow_dont
, /* complain_on_overflow */
1476 ppc64_elf_unhandled_reloc
, /* special_function */
1477 "R_PPC64_TPREL64", /* name */
1478 FALSE
, /* partial_inplace */
1480 ONES (64), /* dst_mask */
1481 FALSE
), /* pcrel_offset */
1483 /* A 16 bit tprel reloc. */
1484 HOWTO (R_PPC64_TPREL16
,
1486 1, /* size (0 = byte, 1 = short, 2 = long) */
1488 FALSE
, /* pc_relative */
1490 complain_overflow_signed
, /* complain_on_overflow */
1491 ppc64_elf_unhandled_reloc
, /* special_function */
1492 "R_PPC64_TPREL16", /* name */
1493 FALSE
, /* partial_inplace */
1495 0xffff, /* dst_mask */
1496 FALSE
), /* pcrel_offset */
1498 /* Like TPREL16, but no overflow. */
1499 HOWTO (R_PPC64_TPREL16_LO
,
1501 1, /* size (0 = byte, 1 = short, 2 = long) */
1503 FALSE
, /* pc_relative */
1505 complain_overflow_dont
, /* complain_on_overflow */
1506 ppc64_elf_unhandled_reloc
, /* special_function */
1507 "R_PPC64_TPREL16_LO", /* name */
1508 FALSE
, /* partial_inplace */
1510 0xffff, /* dst_mask */
1511 FALSE
), /* pcrel_offset */
1513 /* Like TPREL16_LO, but next higher group of 16 bits. */
1514 HOWTO (R_PPC64_TPREL16_HI
,
1515 16, /* rightshift */
1516 1, /* size (0 = byte, 1 = short, 2 = long) */
1518 FALSE
, /* pc_relative */
1520 complain_overflow_dont
, /* complain_on_overflow */
1521 ppc64_elf_unhandled_reloc
, /* special_function */
1522 "R_PPC64_TPREL16_HI", /* name */
1523 FALSE
, /* partial_inplace */
1525 0xffff, /* dst_mask */
1526 FALSE
), /* pcrel_offset */
1528 /* Like TPREL16_HI, but adjust for low 16 bits. */
1529 HOWTO (R_PPC64_TPREL16_HA
,
1530 16, /* rightshift */
1531 1, /* size (0 = byte, 1 = short, 2 = long) */
1533 FALSE
, /* pc_relative */
1535 complain_overflow_dont
, /* complain_on_overflow */
1536 ppc64_elf_unhandled_reloc
, /* special_function */
1537 "R_PPC64_TPREL16_HA", /* name */
1538 FALSE
, /* partial_inplace */
1540 0xffff, /* dst_mask */
1541 FALSE
), /* pcrel_offset */
1543 /* Like TPREL16_HI, but next higher group of 16 bits. */
1544 HOWTO (R_PPC64_TPREL16_HIGHER
,
1545 32, /* rightshift */
1546 1, /* size (0 = byte, 1 = short, 2 = long) */
1548 FALSE
, /* pc_relative */
1550 complain_overflow_dont
, /* complain_on_overflow */
1551 ppc64_elf_unhandled_reloc
, /* special_function */
1552 "R_PPC64_TPREL16_HIGHER", /* name */
1553 FALSE
, /* partial_inplace */
1555 0xffff, /* dst_mask */
1556 FALSE
), /* pcrel_offset */
1558 /* Like TPREL16_HIGHER, but adjust for low 16 bits. */
1559 HOWTO (R_PPC64_TPREL16_HIGHERA
,
1560 32, /* rightshift */
1561 1, /* size (0 = byte, 1 = short, 2 = long) */
1563 FALSE
, /* pc_relative */
1565 complain_overflow_dont
, /* complain_on_overflow */
1566 ppc64_elf_unhandled_reloc
, /* special_function */
1567 "R_PPC64_TPREL16_HIGHERA", /* name */
1568 FALSE
, /* partial_inplace */
1570 0xffff, /* dst_mask */
1571 FALSE
), /* pcrel_offset */
1573 /* Like TPREL16_HIGHER, but next higher group of 16 bits. */
1574 HOWTO (R_PPC64_TPREL16_HIGHEST
,
1575 48, /* rightshift */
1576 1, /* size (0 = byte, 1 = short, 2 = long) */
1578 FALSE
, /* pc_relative */
1580 complain_overflow_dont
, /* complain_on_overflow */
1581 ppc64_elf_unhandled_reloc
, /* special_function */
1582 "R_PPC64_TPREL16_HIGHEST", /* name */
1583 FALSE
, /* partial_inplace */
1585 0xffff, /* dst_mask */
1586 FALSE
), /* pcrel_offset */
1588 /* Like TPREL16_HIGHEST, but adjust for low 16 bits. */
1589 HOWTO (R_PPC64_TPREL16_HIGHESTA
,
1590 48, /* rightshift */
1591 1, /* size (0 = byte, 1 = short, 2 = long) */
1593 FALSE
, /* pc_relative */
1595 complain_overflow_dont
, /* complain_on_overflow */
1596 ppc64_elf_unhandled_reloc
, /* special_function */
1597 "R_PPC64_TPREL16_HIGHESTA", /* name */
1598 FALSE
, /* partial_inplace */
1600 0xffff, /* dst_mask */
1601 FALSE
), /* pcrel_offset */
1603 /* Like TPREL16, but for insns with a DS field. */
1604 HOWTO (R_PPC64_TPREL16_DS
,
1606 1, /* size (0 = byte, 1 = short, 2 = long) */
1608 FALSE
, /* pc_relative */
1610 complain_overflow_signed
, /* complain_on_overflow */
1611 ppc64_elf_unhandled_reloc
, /* special_function */
1612 "R_PPC64_TPREL16_DS", /* name */
1613 FALSE
, /* partial_inplace */
1615 0xfffc, /* dst_mask */
1616 FALSE
), /* pcrel_offset */
1618 /* Like TPREL16_DS, but no overflow. */
1619 HOWTO (R_PPC64_TPREL16_LO_DS
,
1621 1, /* size (0 = byte, 1 = short, 2 = long) */
1623 FALSE
, /* pc_relative */
1625 complain_overflow_dont
, /* complain_on_overflow */
1626 ppc64_elf_unhandled_reloc
, /* special_function */
1627 "R_PPC64_TPREL16_LO_DS", /* name */
1628 FALSE
, /* partial_inplace */
1630 0xfffc, /* dst_mask */
1631 FALSE
), /* pcrel_offset */
1633 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1634 with values (sym+add)@dtpmod and (sym+add)@dtprel, and computes the offset
1635 to the first entry relative to the TOC base (r2). */
1636 HOWTO (R_PPC64_GOT_TLSGD16
,
1638 1, /* size (0 = byte, 1 = short, 2 = long) */
1640 FALSE
, /* pc_relative */
1642 complain_overflow_signed
, /* complain_on_overflow */
1643 ppc64_elf_unhandled_reloc
, /* special_function */
1644 "R_PPC64_GOT_TLSGD16", /* name */
1645 FALSE
, /* partial_inplace */
1647 0xffff, /* dst_mask */
1648 FALSE
), /* pcrel_offset */
1650 /* Like GOT_TLSGD16, but no overflow. */
1651 HOWTO (R_PPC64_GOT_TLSGD16_LO
,
1653 1, /* size (0 = byte, 1 = short, 2 = long) */
1655 FALSE
, /* pc_relative */
1657 complain_overflow_dont
, /* complain_on_overflow */
1658 ppc64_elf_unhandled_reloc
, /* special_function */
1659 "R_PPC64_GOT_TLSGD16_LO", /* name */
1660 FALSE
, /* partial_inplace */
1662 0xffff, /* dst_mask */
1663 FALSE
), /* pcrel_offset */
1665 /* Like GOT_TLSGD16_LO, but next higher group of 16 bits. */
1666 HOWTO (R_PPC64_GOT_TLSGD16_HI
,
1667 16, /* rightshift */
1668 1, /* size (0 = byte, 1 = short, 2 = long) */
1670 FALSE
, /* pc_relative */
1672 complain_overflow_dont
, /* complain_on_overflow */
1673 ppc64_elf_unhandled_reloc
, /* special_function */
1674 "R_PPC64_GOT_TLSGD16_HI", /* name */
1675 FALSE
, /* partial_inplace */
1677 0xffff, /* dst_mask */
1678 FALSE
), /* pcrel_offset */
1680 /* Like GOT_TLSGD16_HI, but adjust for low 16 bits. */
1681 HOWTO (R_PPC64_GOT_TLSGD16_HA
,
1682 16, /* rightshift */
1683 1, /* size (0 = byte, 1 = short, 2 = long) */
1685 FALSE
, /* pc_relative */
1687 complain_overflow_dont
, /* complain_on_overflow */
1688 ppc64_elf_unhandled_reloc
, /* special_function */
1689 "R_PPC64_GOT_TLSGD16_HA", /* name */
1690 FALSE
, /* partial_inplace */
1692 0xffff, /* dst_mask */
1693 FALSE
), /* pcrel_offset */
1695 /* Allocates two contiguous entries in the GOT to hold a tls_index structure,
1696 with values (sym+add)@dtpmod and zero, and computes the offset to the
1697 first entry relative to the TOC base (r2). */
1698 HOWTO (R_PPC64_GOT_TLSLD16
,
1700 1, /* size (0 = byte, 1 = short, 2 = long) */
1702 FALSE
, /* pc_relative */
1704 complain_overflow_signed
, /* complain_on_overflow */
1705 ppc64_elf_unhandled_reloc
, /* special_function */
1706 "R_PPC64_GOT_TLSLD16", /* name */
1707 FALSE
, /* partial_inplace */
1709 0xffff, /* dst_mask */
1710 FALSE
), /* pcrel_offset */
1712 /* Like GOT_TLSLD16, but no overflow. */
1713 HOWTO (R_PPC64_GOT_TLSLD16_LO
,
1715 1, /* size (0 = byte, 1 = short, 2 = long) */
1717 FALSE
, /* pc_relative */
1719 complain_overflow_dont
, /* complain_on_overflow */
1720 ppc64_elf_unhandled_reloc
, /* special_function */
1721 "R_PPC64_GOT_TLSLD16_LO", /* name */
1722 FALSE
, /* partial_inplace */
1724 0xffff, /* dst_mask */
1725 FALSE
), /* pcrel_offset */
1727 /* Like GOT_TLSLD16_LO, but next higher group of 16 bits. */
1728 HOWTO (R_PPC64_GOT_TLSLD16_HI
,
1729 16, /* rightshift */
1730 1, /* size (0 = byte, 1 = short, 2 = long) */
1732 FALSE
, /* pc_relative */
1734 complain_overflow_dont
, /* complain_on_overflow */
1735 ppc64_elf_unhandled_reloc
, /* special_function */
1736 "R_PPC64_GOT_TLSLD16_HI", /* name */
1737 FALSE
, /* partial_inplace */
1739 0xffff, /* dst_mask */
1740 FALSE
), /* pcrel_offset */
1742 /* Like GOT_TLSLD16_HI, but adjust for low 16 bits. */
1743 HOWTO (R_PPC64_GOT_TLSLD16_HA
,
1744 16, /* rightshift */
1745 1, /* size (0 = byte, 1 = short, 2 = long) */
1747 FALSE
, /* pc_relative */
1749 complain_overflow_dont
, /* complain_on_overflow */
1750 ppc64_elf_unhandled_reloc
, /* special_function */
1751 "R_PPC64_GOT_TLSLD16_HA", /* name */
1752 FALSE
, /* partial_inplace */
1754 0xffff, /* dst_mask */
1755 FALSE
), /* pcrel_offset */
1757 /* Allocates an entry in the GOT with value (sym+add)@dtprel, and computes
1758 the offset to the entry relative to the TOC base (r2). */
1759 HOWTO (R_PPC64_GOT_DTPREL16_DS
,
1761 1, /* size (0 = byte, 1 = short, 2 = long) */
1763 FALSE
, /* pc_relative */
1765 complain_overflow_signed
, /* complain_on_overflow */
1766 ppc64_elf_unhandled_reloc
, /* special_function */
1767 "R_PPC64_GOT_DTPREL16_DS", /* name */
1768 FALSE
, /* partial_inplace */
1770 0xfffc, /* dst_mask */
1771 FALSE
), /* pcrel_offset */
1773 /* Like GOT_DTPREL16_DS, but no overflow. */
1774 HOWTO (R_PPC64_GOT_DTPREL16_LO_DS
,
1776 1, /* size (0 = byte, 1 = short, 2 = long) */
1778 FALSE
, /* pc_relative */
1780 complain_overflow_dont
, /* complain_on_overflow */
1781 ppc64_elf_unhandled_reloc
, /* special_function */
1782 "R_PPC64_GOT_DTPREL16_LO_DS", /* name */
1783 FALSE
, /* partial_inplace */
1785 0xfffc, /* dst_mask */
1786 FALSE
), /* pcrel_offset */
1788 /* Like GOT_DTPREL16_LO_DS, but next higher group of 16 bits. */
1789 HOWTO (R_PPC64_GOT_DTPREL16_HI
,
1790 16, /* rightshift */
1791 1, /* size (0 = byte, 1 = short, 2 = long) */
1793 FALSE
, /* pc_relative */
1795 complain_overflow_dont
, /* complain_on_overflow */
1796 ppc64_elf_unhandled_reloc
, /* special_function */
1797 "R_PPC64_GOT_DTPREL16_HI", /* name */
1798 FALSE
, /* partial_inplace */
1800 0xffff, /* dst_mask */
1801 FALSE
), /* pcrel_offset */
1803 /* Like GOT_DTPREL16_HI, but adjust for low 16 bits. */
1804 HOWTO (R_PPC64_GOT_DTPREL16_HA
,
1805 16, /* rightshift */
1806 1, /* size (0 = byte, 1 = short, 2 = long) */
1808 FALSE
, /* pc_relative */
1810 complain_overflow_dont
, /* complain_on_overflow */
1811 ppc64_elf_unhandled_reloc
, /* special_function */
1812 "R_PPC64_GOT_DTPREL16_HA", /* name */
1813 FALSE
, /* partial_inplace */
1815 0xffff, /* dst_mask */
1816 FALSE
), /* pcrel_offset */
1818 /* Allocates an entry in the GOT with value (sym+add)@tprel, and computes the
1819 offset to the entry relative to the TOC base (r2). */
1820 HOWTO (R_PPC64_GOT_TPREL16_DS
,
1822 1, /* size (0 = byte, 1 = short, 2 = long) */
1824 FALSE
, /* pc_relative */
1826 complain_overflow_signed
, /* complain_on_overflow */
1827 ppc64_elf_unhandled_reloc
, /* special_function */
1828 "R_PPC64_GOT_TPREL16_DS", /* name */
1829 FALSE
, /* partial_inplace */
1831 0xfffc, /* dst_mask */
1832 FALSE
), /* pcrel_offset */
1834 /* Like GOT_TPREL16_DS, but no overflow. */
1835 HOWTO (R_PPC64_GOT_TPREL16_LO_DS
,
1837 1, /* size (0 = byte, 1 = short, 2 = long) */
1839 FALSE
, /* pc_relative */
1841 complain_overflow_dont
, /* complain_on_overflow */
1842 ppc64_elf_unhandled_reloc
, /* special_function */
1843 "R_PPC64_GOT_TPREL16_LO_DS", /* name */
1844 FALSE
, /* partial_inplace */
1846 0xfffc, /* dst_mask */
1847 FALSE
), /* pcrel_offset */
1849 /* Like GOT_TPREL16_LO_DS, but next higher group of 16 bits. */
1850 HOWTO (R_PPC64_GOT_TPREL16_HI
,
1851 16, /* rightshift */
1852 1, /* size (0 = byte, 1 = short, 2 = long) */
1854 FALSE
, /* pc_relative */
1856 complain_overflow_dont
, /* complain_on_overflow */
1857 ppc64_elf_unhandled_reloc
, /* special_function */
1858 "R_PPC64_GOT_TPREL16_HI", /* name */
1859 FALSE
, /* partial_inplace */
1861 0xffff, /* dst_mask */
1862 FALSE
), /* pcrel_offset */
1864 /* Like GOT_TPREL16_HI, but adjust for low 16 bits. */
1865 HOWTO (R_PPC64_GOT_TPREL16_HA
,
1866 16, /* rightshift */
1867 1, /* size (0 = byte, 1 = short, 2 = long) */
1869 FALSE
, /* pc_relative */
1871 complain_overflow_dont
, /* complain_on_overflow */
1872 ppc64_elf_unhandled_reloc
, /* special_function */
1873 "R_PPC64_GOT_TPREL16_HA", /* name */
1874 FALSE
, /* partial_inplace */
1876 0xffff, /* dst_mask */
1877 FALSE
), /* pcrel_offset */
1879 HOWTO (R_PPC64_JMP_IREL
, /* type */
1881 0, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1883 FALSE
, /* pc_relative */
1885 complain_overflow_dont
, /* complain_on_overflow */
1886 ppc64_elf_unhandled_reloc
, /* special_function */
1887 "R_PPC64_JMP_IREL", /* name */
1888 FALSE
, /* partial_inplace */
1891 FALSE
), /* pcrel_offset */
1893 HOWTO (R_PPC64_IRELATIVE
, /* type */
1895 4, /* size (0=byte, 1=short, 2=long, 4=64 bits) */
1897 FALSE
, /* pc_relative */
1899 complain_overflow_dont
, /* complain_on_overflow */
1900 bfd_elf_generic_reloc
, /* special_function */
1901 "R_PPC64_IRELATIVE", /* name */
1902 FALSE
, /* partial_inplace */
1904 ONES (64), /* dst_mask */
1905 FALSE
), /* pcrel_offset */
1907 /* A 16 bit relative relocation. */
1908 HOWTO (R_PPC64_REL16
, /* type */
1910 1, /* size (0 = byte, 1 = short, 2 = long) */
1912 TRUE
, /* pc_relative */
1914 complain_overflow_bitfield
, /* complain_on_overflow */
1915 bfd_elf_generic_reloc
, /* special_function */
1916 "R_PPC64_REL16", /* name */
1917 FALSE
, /* partial_inplace */
1919 0xffff, /* dst_mask */
1920 TRUE
), /* pcrel_offset */
1922 /* A 16 bit relative relocation without overflow. */
1923 HOWTO (R_PPC64_REL16_LO
, /* type */
1925 1, /* size (0 = byte, 1 = short, 2 = long) */
1927 TRUE
, /* pc_relative */
1929 complain_overflow_dont
,/* complain_on_overflow */
1930 bfd_elf_generic_reloc
, /* special_function */
1931 "R_PPC64_REL16_LO", /* name */
1932 FALSE
, /* partial_inplace */
1934 0xffff, /* dst_mask */
1935 TRUE
), /* pcrel_offset */
1937 /* The high order 16 bits of a relative address. */
1938 HOWTO (R_PPC64_REL16_HI
, /* type */
1939 16, /* rightshift */
1940 1, /* size (0 = byte, 1 = short, 2 = long) */
1942 TRUE
, /* pc_relative */
1944 complain_overflow_dont
, /* complain_on_overflow */
1945 bfd_elf_generic_reloc
, /* special_function */
1946 "R_PPC64_REL16_HI", /* name */
1947 FALSE
, /* partial_inplace */
1949 0xffff, /* dst_mask */
1950 TRUE
), /* pcrel_offset */
1952 /* The high order 16 bits of a relative address, plus 1 if the contents of
1953 the low 16 bits, treated as a signed number, is negative. */
1954 HOWTO (R_PPC64_REL16_HA
, /* type */
1955 16, /* rightshift */
1956 1, /* size (0 = byte, 1 = short, 2 = long) */
1958 TRUE
, /* pc_relative */
1960 complain_overflow_dont
, /* complain_on_overflow */
1961 ppc64_elf_ha_reloc
, /* special_function */
1962 "R_PPC64_REL16_HA", /* name */
1963 FALSE
, /* partial_inplace */
1965 0xffff, /* dst_mask */
1966 TRUE
), /* pcrel_offset */
1968 /* GNU extension to record C++ vtable hierarchy. */
1969 HOWTO (R_PPC64_GNU_VTINHERIT
, /* type */
1971 0, /* size (0 = byte, 1 = short, 2 = long) */
1973 FALSE
, /* pc_relative */
1975 complain_overflow_dont
, /* complain_on_overflow */
1976 NULL
, /* special_function */
1977 "R_PPC64_GNU_VTINHERIT", /* name */
1978 FALSE
, /* partial_inplace */
1981 FALSE
), /* pcrel_offset */
1983 /* GNU extension to record C++ vtable member usage. */
1984 HOWTO (R_PPC64_GNU_VTENTRY
, /* type */
1986 0, /* size (0 = byte, 1 = short, 2 = long) */
1988 FALSE
, /* pc_relative */
1990 complain_overflow_dont
, /* complain_on_overflow */
1991 NULL
, /* special_function */
1992 "R_PPC64_GNU_VTENTRY", /* name */
1993 FALSE
, /* partial_inplace */
1996 FALSE
), /* pcrel_offset */
2000 /* Initialize the ppc64_elf_howto_table, so that linear accesses can
2004 ppc_howto_init (void)
2006 unsigned int i
, type
;
2009 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2012 type
= ppc64_elf_howto_raw
[i
].type
;
2013 BFD_ASSERT (type
< (sizeof (ppc64_elf_howto_table
)
2014 / sizeof (ppc64_elf_howto_table
[0])));
2015 ppc64_elf_howto_table
[type
] = &ppc64_elf_howto_raw
[i
];
2019 static reloc_howto_type
*
2020 ppc64_elf_reloc_type_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2021 bfd_reloc_code_real_type code
)
2023 enum elf_ppc64_reloc_type r
= R_PPC64_NONE
;
2025 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2026 /* Initialize howto table if needed. */
2034 case BFD_RELOC_NONE
: r
= R_PPC64_NONE
;
2036 case BFD_RELOC_32
: r
= R_PPC64_ADDR32
;
2038 case BFD_RELOC_PPC_BA26
: r
= R_PPC64_ADDR24
;
2040 case BFD_RELOC_16
: r
= R_PPC64_ADDR16
;
2042 case BFD_RELOC_LO16
: r
= R_PPC64_ADDR16_LO
;
2044 case BFD_RELOC_HI16
: r
= R_PPC64_ADDR16_HI
;
2046 case BFD_RELOC_HI16_S
: r
= R_PPC64_ADDR16_HA
;
2048 case BFD_RELOC_PPC_BA16
: r
= R_PPC64_ADDR14
;
2050 case BFD_RELOC_PPC_BA16_BRTAKEN
: r
= R_PPC64_ADDR14_BRTAKEN
;
2052 case BFD_RELOC_PPC_BA16_BRNTAKEN
: r
= R_PPC64_ADDR14_BRNTAKEN
;
2054 case BFD_RELOC_PPC_B26
: r
= R_PPC64_REL24
;
2056 case BFD_RELOC_PPC_B16
: r
= R_PPC64_REL14
;
2058 case BFD_RELOC_PPC_B16_BRTAKEN
: r
= R_PPC64_REL14_BRTAKEN
;
2060 case BFD_RELOC_PPC_B16_BRNTAKEN
: r
= R_PPC64_REL14_BRNTAKEN
;
2062 case BFD_RELOC_16_GOTOFF
: r
= R_PPC64_GOT16
;
2064 case BFD_RELOC_LO16_GOTOFF
: r
= R_PPC64_GOT16_LO
;
2066 case BFD_RELOC_HI16_GOTOFF
: r
= R_PPC64_GOT16_HI
;
2068 case BFD_RELOC_HI16_S_GOTOFF
: r
= R_PPC64_GOT16_HA
;
2070 case BFD_RELOC_PPC_COPY
: r
= R_PPC64_COPY
;
2072 case BFD_RELOC_PPC_GLOB_DAT
: r
= R_PPC64_GLOB_DAT
;
2074 case BFD_RELOC_32_PCREL
: r
= R_PPC64_REL32
;
2076 case BFD_RELOC_32_PLTOFF
: r
= R_PPC64_PLT32
;
2078 case BFD_RELOC_32_PLT_PCREL
: r
= R_PPC64_PLTREL32
;
2080 case BFD_RELOC_LO16_PLTOFF
: r
= R_PPC64_PLT16_LO
;
2082 case BFD_RELOC_HI16_PLTOFF
: r
= R_PPC64_PLT16_HI
;
2084 case BFD_RELOC_HI16_S_PLTOFF
: r
= R_PPC64_PLT16_HA
;
2086 case BFD_RELOC_16_BASEREL
: r
= R_PPC64_SECTOFF
;
2088 case BFD_RELOC_LO16_BASEREL
: r
= R_PPC64_SECTOFF_LO
;
2090 case BFD_RELOC_HI16_BASEREL
: r
= R_PPC64_SECTOFF_HI
;
2092 case BFD_RELOC_HI16_S_BASEREL
: r
= R_PPC64_SECTOFF_HA
;
2094 case BFD_RELOC_CTOR
: r
= R_PPC64_ADDR64
;
2096 case BFD_RELOC_64
: r
= R_PPC64_ADDR64
;
2098 case BFD_RELOC_PPC64_HIGHER
: r
= R_PPC64_ADDR16_HIGHER
;
2100 case BFD_RELOC_PPC64_HIGHER_S
: r
= R_PPC64_ADDR16_HIGHERA
;
2102 case BFD_RELOC_PPC64_HIGHEST
: r
= R_PPC64_ADDR16_HIGHEST
;
2104 case BFD_RELOC_PPC64_HIGHEST_S
: r
= R_PPC64_ADDR16_HIGHESTA
;
2106 case BFD_RELOC_64_PCREL
: r
= R_PPC64_REL64
;
2108 case BFD_RELOC_64_PLTOFF
: r
= R_PPC64_PLT64
;
2110 case BFD_RELOC_64_PLT_PCREL
: r
= R_PPC64_PLTREL64
;
2112 case BFD_RELOC_PPC_TOC16
: r
= R_PPC64_TOC16
;
2114 case BFD_RELOC_PPC64_TOC16_LO
: r
= R_PPC64_TOC16_LO
;
2116 case BFD_RELOC_PPC64_TOC16_HI
: r
= R_PPC64_TOC16_HI
;
2118 case BFD_RELOC_PPC64_TOC16_HA
: r
= R_PPC64_TOC16_HA
;
2120 case BFD_RELOC_PPC64_TOC
: r
= R_PPC64_TOC
;
2122 case BFD_RELOC_PPC64_PLTGOT16
: r
= R_PPC64_PLTGOT16
;
2124 case BFD_RELOC_PPC64_PLTGOT16_LO
: r
= R_PPC64_PLTGOT16_LO
;
2126 case BFD_RELOC_PPC64_PLTGOT16_HI
: r
= R_PPC64_PLTGOT16_HI
;
2128 case BFD_RELOC_PPC64_PLTGOT16_HA
: r
= R_PPC64_PLTGOT16_HA
;
2130 case BFD_RELOC_PPC64_ADDR16_DS
: r
= R_PPC64_ADDR16_DS
;
2132 case BFD_RELOC_PPC64_ADDR16_LO_DS
: r
= R_PPC64_ADDR16_LO_DS
;
2134 case BFD_RELOC_PPC64_GOT16_DS
: r
= R_PPC64_GOT16_DS
;
2136 case BFD_RELOC_PPC64_GOT16_LO_DS
: r
= R_PPC64_GOT16_LO_DS
;
2138 case BFD_RELOC_PPC64_PLT16_LO_DS
: r
= R_PPC64_PLT16_LO_DS
;
2140 case BFD_RELOC_PPC64_SECTOFF_DS
: r
= R_PPC64_SECTOFF_DS
;
2142 case BFD_RELOC_PPC64_SECTOFF_LO_DS
: r
= R_PPC64_SECTOFF_LO_DS
;
2144 case BFD_RELOC_PPC64_TOC16_DS
: r
= R_PPC64_TOC16_DS
;
2146 case BFD_RELOC_PPC64_TOC16_LO_DS
: r
= R_PPC64_TOC16_LO_DS
;
2148 case BFD_RELOC_PPC64_PLTGOT16_DS
: r
= R_PPC64_PLTGOT16_DS
;
2150 case BFD_RELOC_PPC64_PLTGOT16_LO_DS
: r
= R_PPC64_PLTGOT16_LO_DS
;
2152 case BFD_RELOC_PPC_TLS
: r
= R_PPC64_TLS
;
2154 case BFD_RELOC_PPC_TLSGD
: r
= R_PPC64_TLSGD
;
2156 case BFD_RELOC_PPC_TLSLD
: r
= R_PPC64_TLSLD
;
2158 case BFD_RELOC_PPC_DTPMOD
: r
= R_PPC64_DTPMOD64
;
2160 case BFD_RELOC_PPC_TPREL16
: r
= R_PPC64_TPREL16
;
2162 case BFD_RELOC_PPC_TPREL16_LO
: r
= R_PPC64_TPREL16_LO
;
2164 case BFD_RELOC_PPC_TPREL16_HI
: r
= R_PPC64_TPREL16_HI
;
2166 case BFD_RELOC_PPC_TPREL16_HA
: r
= R_PPC64_TPREL16_HA
;
2168 case BFD_RELOC_PPC_TPREL
: r
= R_PPC64_TPREL64
;
2170 case BFD_RELOC_PPC_DTPREL16
: r
= R_PPC64_DTPREL16
;
2172 case BFD_RELOC_PPC_DTPREL16_LO
: r
= R_PPC64_DTPREL16_LO
;
2174 case BFD_RELOC_PPC_DTPREL16_HI
: r
= R_PPC64_DTPREL16_HI
;
2176 case BFD_RELOC_PPC_DTPREL16_HA
: r
= R_PPC64_DTPREL16_HA
;
2178 case BFD_RELOC_PPC_DTPREL
: r
= R_PPC64_DTPREL64
;
2180 case BFD_RELOC_PPC_GOT_TLSGD16
: r
= R_PPC64_GOT_TLSGD16
;
2182 case BFD_RELOC_PPC_GOT_TLSGD16_LO
: r
= R_PPC64_GOT_TLSGD16_LO
;
2184 case BFD_RELOC_PPC_GOT_TLSGD16_HI
: r
= R_PPC64_GOT_TLSGD16_HI
;
2186 case BFD_RELOC_PPC_GOT_TLSGD16_HA
: r
= R_PPC64_GOT_TLSGD16_HA
;
2188 case BFD_RELOC_PPC_GOT_TLSLD16
: r
= R_PPC64_GOT_TLSLD16
;
2190 case BFD_RELOC_PPC_GOT_TLSLD16_LO
: r
= R_PPC64_GOT_TLSLD16_LO
;
2192 case BFD_RELOC_PPC_GOT_TLSLD16_HI
: r
= R_PPC64_GOT_TLSLD16_HI
;
2194 case BFD_RELOC_PPC_GOT_TLSLD16_HA
: r
= R_PPC64_GOT_TLSLD16_HA
;
2196 case BFD_RELOC_PPC_GOT_TPREL16
: r
= R_PPC64_GOT_TPREL16_DS
;
2198 case BFD_RELOC_PPC_GOT_TPREL16_LO
: r
= R_PPC64_GOT_TPREL16_LO_DS
;
2200 case BFD_RELOC_PPC_GOT_TPREL16_HI
: r
= R_PPC64_GOT_TPREL16_HI
;
2202 case BFD_RELOC_PPC_GOT_TPREL16_HA
: r
= R_PPC64_GOT_TPREL16_HA
;
2204 case BFD_RELOC_PPC_GOT_DTPREL16
: r
= R_PPC64_GOT_DTPREL16_DS
;
2206 case BFD_RELOC_PPC_GOT_DTPREL16_LO
: r
= R_PPC64_GOT_DTPREL16_LO_DS
;
2208 case BFD_RELOC_PPC_GOT_DTPREL16_HI
: r
= R_PPC64_GOT_DTPREL16_HI
;
2210 case BFD_RELOC_PPC_GOT_DTPREL16_HA
: r
= R_PPC64_GOT_DTPREL16_HA
;
2212 case BFD_RELOC_PPC64_TPREL16_DS
: r
= R_PPC64_TPREL16_DS
;
2214 case BFD_RELOC_PPC64_TPREL16_LO_DS
: r
= R_PPC64_TPREL16_LO_DS
;
2216 case BFD_RELOC_PPC64_TPREL16_HIGHER
: r
= R_PPC64_TPREL16_HIGHER
;
2218 case BFD_RELOC_PPC64_TPREL16_HIGHERA
: r
= R_PPC64_TPREL16_HIGHERA
;
2220 case BFD_RELOC_PPC64_TPREL16_HIGHEST
: r
= R_PPC64_TPREL16_HIGHEST
;
2222 case BFD_RELOC_PPC64_TPREL16_HIGHESTA
: r
= R_PPC64_TPREL16_HIGHESTA
;
2224 case BFD_RELOC_PPC64_DTPREL16_DS
: r
= R_PPC64_DTPREL16_DS
;
2226 case BFD_RELOC_PPC64_DTPREL16_LO_DS
: r
= R_PPC64_DTPREL16_LO_DS
;
2228 case BFD_RELOC_PPC64_DTPREL16_HIGHER
: r
= R_PPC64_DTPREL16_HIGHER
;
2230 case BFD_RELOC_PPC64_DTPREL16_HIGHERA
: r
= R_PPC64_DTPREL16_HIGHERA
;
2232 case BFD_RELOC_PPC64_DTPREL16_HIGHEST
: r
= R_PPC64_DTPREL16_HIGHEST
;
2234 case BFD_RELOC_PPC64_DTPREL16_HIGHESTA
: r
= R_PPC64_DTPREL16_HIGHESTA
;
2236 case BFD_RELOC_16_PCREL
: r
= R_PPC64_REL16
;
2238 case BFD_RELOC_LO16_PCREL
: r
= R_PPC64_REL16_LO
;
2240 case BFD_RELOC_HI16_PCREL
: r
= R_PPC64_REL16_HI
;
2242 case BFD_RELOC_HI16_S_PCREL
: r
= R_PPC64_REL16_HA
;
2244 case BFD_RELOC_VTABLE_INHERIT
: r
= R_PPC64_GNU_VTINHERIT
;
2246 case BFD_RELOC_VTABLE_ENTRY
: r
= R_PPC64_GNU_VTENTRY
;
2250 return ppc64_elf_howto_table
[r
];
2253 static reloc_howto_type
*
2254 ppc64_elf_reloc_name_lookup (bfd
*abfd ATTRIBUTE_UNUSED
,
2260 i
< sizeof (ppc64_elf_howto_raw
) / sizeof (ppc64_elf_howto_raw
[0]);
2262 if (ppc64_elf_howto_raw
[i
].name
!= NULL
2263 && strcasecmp (ppc64_elf_howto_raw
[i
].name
, r_name
) == 0)
2264 return &ppc64_elf_howto_raw
[i
];
2269 /* Set the howto pointer for a PowerPC ELF reloc. */
2272 ppc64_elf_info_to_howto (bfd
*abfd ATTRIBUTE_UNUSED
, arelent
*cache_ptr
,
2273 Elf_Internal_Rela
*dst
)
2277 /* Initialize howto table if needed. */
2278 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
2281 type
= ELF64_R_TYPE (dst
->r_info
);
2282 if (type
>= (sizeof (ppc64_elf_howto_table
)
2283 / sizeof (ppc64_elf_howto_table
[0])))
2285 (*_bfd_error_handler
) (_("%B: invalid relocation type %d"),
2287 type
= R_PPC64_NONE
;
2289 cache_ptr
->howto
= ppc64_elf_howto_table
[type
];
2292 /* Handle the R_PPC64_ADDR16_HA and similar relocs. */
2294 static bfd_reloc_status_type
2295 ppc64_elf_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2296 void *data
, asection
*input_section
,
2297 bfd
*output_bfd
, char **error_message
)
2299 /* If this is a relocatable link (output_bfd test tells us), just
2300 call the generic function. Any adjustment will be done at final
2302 if (output_bfd
!= NULL
)
2303 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2304 input_section
, output_bfd
, error_message
);
2306 /* Adjust the addend for sign extension of the low 16 bits.
2307 We won't actually be using the low 16 bits, so trashing them
2309 reloc_entry
->addend
+= 0x8000;
2310 return bfd_reloc_continue
;
2313 static bfd_reloc_status_type
2314 ppc64_elf_branch_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2315 void *data
, asection
*input_section
,
2316 bfd
*output_bfd
, char **error_message
)
2318 if (output_bfd
!= NULL
)
2319 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2320 input_section
, output_bfd
, error_message
);
2322 if (strcmp (symbol
->section
->name
, ".opd") == 0
2323 && (symbol
->section
->owner
->flags
& DYNAMIC
) == 0)
2325 bfd_vma dest
= opd_entry_value (symbol
->section
,
2326 symbol
->value
+ reloc_entry
->addend
,
2328 if (dest
!= (bfd_vma
) -1)
2329 reloc_entry
->addend
= dest
- (symbol
->value
2330 + symbol
->section
->output_section
->vma
2331 + symbol
->section
->output_offset
);
2333 return bfd_reloc_continue
;
2336 static bfd_reloc_status_type
2337 ppc64_elf_brtaken_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2338 void *data
, asection
*input_section
,
2339 bfd
*output_bfd
, char **error_message
)
2342 enum elf_ppc64_reloc_type r_type
;
2343 bfd_size_type octets
;
2344 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
2345 bfd_boolean is_power4
= FALSE
;
2347 /* If this is a relocatable link (output_bfd test tells us), just
2348 call the generic function. Any adjustment will be done at final
2350 if (output_bfd
!= NULL
)
2351 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2352 input_section
, output_bfd
, error_message
);
2354 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2355 insn
= bfd_get_32 (abfd
, (bfd_byte
*) data
+ octets
);
2356 insn
&= ~(0x01 << 21);
2357 r_type
= reloc_entry
->howto
->type
;
2358 if (r_type
== R_PPC64_ADDR14_BRTAKEN
2359 || r_type
== R_PPC64_REL14_BRTAKEN
)
2360 insn
|= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
2364 /* Set 'a' bit. This is 0b00010 in BO field for branch
2365 on CR(BI) insns (BO == 001at or 011at), and 0b01000
2366 for branch on CTR insns (BO == 1a00t or 1a01t). */
2367 if ((insn
& (0x14 << 21)) == (0x04 << 21))
2369 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
2379 if (!bfd_is_com_section (symbol
->section
))
2380 target
= symbol
->value
;
2381 target
+= symbol
->section
->output_section
->vma
;
2382 target
+= symbol
->section
->output_offset
;
2383 target
+= reloc_entry
->addend
;
2385 from
= (reloc_entry
->address
2386 + input_section
->output_offset
2387 + input_section
->output_section
->vma
);
2389 /* Invert 'y' bit if not the default. */
2390 if ((bfd_signed_vma
) (target
- from
) < 0)
2393 bfd_put_32 (abfd
, insn
, (bfd_byte
*) data
+ octets
);
2395 return ppc64_elf_branch_reloc (abfd
, reloc_entry
, symbol
, data
,
2396 input_section
, output_bfd
, error_message
);
2399 static bfd_reloc_status_type
2400 ppc64_elf_sectoff_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2401 void *data
, asection
*input_section
,
2402 bfd
*output_bfd
, char **error_message
)
2404 /* If this is a relocatable link (output_bfd test tells us), just
2405 call the generic function. Any adjustment will be done at final
2407 if (output_bfd
!= NULL
)
2408 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2409 input_section
, output_bfd
, error_message
);
2411 /* Subtract the symbol section base address. */
2412 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2413 return bfd_reloc_continue
;
2416 static bfd_reloc_status_type
2417 ppc64_elf_sectoff_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2418 void *data
, asection
*input_section
,
2419 bfd
*output_bfd
, char **error_message
)
2421 /* If this is a relocatable link (output_bfd test tells us), just
2422 call the generic function. Any adjustment will be done at final
2424 if (output_bfd
!= NULL
)
2425 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2426 input_section
, output_bfd
, error_message
);
2428 /* Subtract the symbol section base address. */
2429 reloc_entry
->addend
-= symbol
->section
->output_section
->vma
;
2431 /* Adjust the addend for sign extension of the low 16 bits. */
2432 reloc_entry
->addend
+= 0x8000;
2433 return bfd_reloc_continue
;
2436 static bfd_reloc_status_type
2437 ppc64_elf_toc_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2438 void *data
, asection
*input_section
,
2439 bfd
*output_bfd
, char **error_message
)
2443 /* If this is a relocatable link (output_bfd test tells us), just
2444 call the generic function. Any adjustment will be done at final
2446 if (output_bfd
!= NULL
)
2447 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2448 input_section
, output_bfd
, error_message
);
2450 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2452 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2454 /* Subtract the TOC base address. */
2455 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2456 return bfd_reloc_continue
;
2459 static bfd_reloc_status_type
2460 ppc64_elf_toc_ha_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2461 void *data
, asection
*input_section
,
2462 bfd
*output_bfd
, char **error_message
)
2466 /* If this is a relocatable link (output_bfd test tells us), just
2467 call the generic function. Any adjustment will be done at final
2469 if (output_bfd
!= NULL
)
2470 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2471 input_section
, output_bfd
, error_message
);
2473 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2475 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2477 /* Subtract the TOC base address. */
2478 reloc_entry
->addend
-= TOCstart
+ TOC_BASE_OFF
;
2480 /* Adjust the addend for sign extension of the low 16 bits. */
2481 reloc_entry
->addend
+= 0x8000;
2482 return bfd_reloc_continue
;
2485 static bfd_reloc_status_type
2486 ppc64_elf_toc64_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2487 void *data
, asection
*input_section
,
2488 bfd
*output_bfd
, char **error_message
)
2491 bfd_size_type octets
;
2493 /* If this is a relocatable link (output_bfd test tells us), just
2494 call the generic function. Any adjustment will be done at final
2496 if (output_bfd
!= NULL
)
2497 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2498 input_section
, output_bfd
, error_message
);
2500 TOCstart
= _bfd_get_gp_value (input_section
->output_section
->owner
);
2502 TOCstart
= ppc64_elf_toc (input_section
->output_section
->owner
);
2504 octets
= reloc_entry
->address
* bfd_octets_per_byte (abfd
);
2505 bfd_put_64 (abfd
, TOCstart
+ TOC_BASE_OFF
, (bfd_byte
*) data
+ octets
);
2506 return bfd_reloc_ok
;
2509 static bfd_reloc_status_type
2510 ppc64_elf_unhandled_reloc (bfd
*abfd
, arelent
*reloc_entry
, asymbol
*symbol
,
2511 void *data
, asection
*input_section
,
2512 bfd
*output_bfd
, char **error_message
)
2514 /* If this is a relocatable link (output_bfd test tells us), just
2515 call the generic function. Any adjustment will be done at final
2517 if (output_bfd
!= NULL
)
2518 return bfd_elf_generic_reloc (abfd
, reloc_entry
, symbol
, data
,
2519 input_section
, output_bfd
, error_message
);
2521 if (error_message
!= NULL
)
2523 static char buf
[60];
2524 sprintf (buf
, "generic linker can't handle %s",
2525 reloc_entry
->howto
->name
);
2526 *error_message
= buf
;
2528 return bfd_reloc_dangerous
;
2531 /* Track GOT entries needed for a given symbol. We might need more
2532 than one got entry per symbol. */
2535 struct got_entry
*next
;
2537 /* The symbol addend that we'll be placing in the GOT. */
2540 /* Unlike other ELF targets, we use separate GOT entries for the same
2541 symbol referenced from different input files. This is to support
2542 automatic multiple TOC/GOT sections, where the TOC base can vary
2543 from one input file to another. After partitioning into TOC groups
2544 we merge entries within the group.
2546 Point to the BFD owning this GOT entry. */
2549 /* Zero for non-tls entries, or TLS_TLS and one of TLS_GD, TLS_LD,
2550 TLS_TPREL or TLS_DTPREL for tls entries. */
2551 unsigned char tls_type
;
2553 /* Non-zero if got.ent points to real entry. */
2554 unsigned char is_indirect
;
2556 /* Reference count until size_dynamic_sections, GOT offset thereafter. */
2559 bfd_signed_vma refcount
;
2561 struct got_entry
*ent
;
2565 /* The same for PLT. */
2568 struct plt_entry
*next
;
2574 bfd_signed_vma refcount
;
2579 struct ppc64_elf_obj_tdata
2581 struct elf_obj_tdata elf
;
2583 /* Shortcuts to dynamic linker sections. */
2587 /* Used during garbage collection. We attach global symbols defined
2588 on removed .opd entries to this section so that the sym is removed. */
2589 asection
*deleted_section
;
2591 /* TLS local dynamic got entry handling. Support for multiple GOT
2592 sections means we potentially need one of these for each input bfd. */
2593 struct got_entry tlsld_got
;
2595 /* A copy of relocs before they are modified for --emit-relocs. */
2596 Elf_Internal_Rela
*opd_relocs
;
2598 /* Nonzero if this bfd has small toc/got relocs, ie. that expect
2599 the reloc to be in the range -32768 to 32767. */
2600 unsigned int has_small_toc_reloc
;
2603 #define ppc64_elf_tdata(bfd) \
2604 ((struct ppc64_elf_obj_tdata *) (bfd)->tdata.any)
2606 #define ppc64_tlsld_got(bfd) \
2607 (&ppc64_elf_tdata (bfd)->tlsld_got)
2609 #define is_ppc64_elf(bfd) \
2610 (bfd_get_flavour (bfd) == bfd_target_elf_flavour \
2611 && elf_object_id (bfd) == PPC64_ELF_DATA)
2613 /* Override the generic function because we store some extras. */
2616 ppc64_elf_mkobject (bfd
*abfd
)
2618 return bfd_elf_allocate_object (abfd
, sizeof (struct ppc64_elf_obj_tdata
),
2622 /* Fix bad default arch selected for a 64 bit input bfd when the
2623 default is 32 bit. */
2626 ppc64_elf_object_p (bfd
*abfd
)
2628 if (abfd
->arch_info
->the_default
&& abfd
->arch_info
->bits_per_word
== 32)
2630 Elf_Internal_Ehdr
*i_ehdr
= elf_elfheader (abfd
);
2632 if (i_ehdr
->e_ident
[EI_CLASS
] == ELFCLASS64
)
2634 /* Relies on arch after 32 bit default being 64 bit default. */
2635 abfd
->arch_info
= abfd
->arch_info
->next
;
2636 BFD_ASSERT (abfd
->arch_info
->bits_per_word
== 64);
2642 /* Support for core dump NOTE sections. */
2645 ppc64_elf_grok_prstatus (bfd
*abfd
, Elf_Internal_Note
*note
)
2647 size_t offset
, size
;
2649 if (note
->descsz
!= 504)
2653 elf_tdata (abfd
)->core_signal
= bfd_get_16 (abfd
, note
->descdata
+ 12);
2656 elf_tdata (abfd
)->core_lwpid
= bfd_get_32 (abfd
, note
->descdata
+ 32);
2662 /* Make a ".reg/999" section. */
2663 return _bfd_elfcore_make_pseudosection (abfd
, ".reg",
2664 size
, note
->descpos
+ offset
);
2668 ppc64_elf_grok_psinfo (bfd
*abfd
, Elf_Internal_Note
*note
)
2670 if (note
->descsz
!= 136)
2673 elf_tdata (abfd
)->core_pid
2674 = bfd_get_32 (abfd
, note
->descdata
+ 24);
2675 elf_tdata (abfd
)->core_program
2676 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 40, 16);
2677 elf_tdata (abfd
)->core_command
2678 = _bfd_elfcore_strndup (abfd
, note
->descdata
+ 56, 80);
2684 ppc64_elf_write_core_note (bfd
*abfd
, char *buf
, int *bufsiz
, int note_type
,
2697 va_start (ap
, note_type
);
2698 memset (data
, 0, 40);
2699 strncpy (data
+ 40, va_arg (ap
, const char *), 16);
2700 strncpy (data
+ 56, va_arg (ap
, const char *), 80);
2702 return elfcore_write_note (abfd
, buf
, bufsiz
,
2703 "CORE", note_type
, data
, sizeof (data
));
2714 va_start (ap
, note_type
);
2715 memset (data
, 0, 112);
2716 pid
= va_arg (ap
, long);
2717 bfd_put_32 (abfd
, pid
, data
+ 32);
2718 cursig
= va_arg (ap
, int);
2719 bfd_put_16 (abfd
, cursig
, data
+ 12);
2720 greg
= va_arg (ap
, const void *);
2721 memcpy (data
+ 112, greg
, 384);
2722 memset (data
+ 496, 0, 8);
2724 return elfcore_write_note (abfd
, buf
, bufsiz
,
2725 "CORE", note_type
, data
, sizeof (data
));
2730 /* Add extra PPC sections. */
2732 static const struct bfd_elf_special_section ppc64_elf_special_sections
[]=
2734 { STRING_COMMA_LEN (".plt"), 0, SHT_NOBITS
, 0 },
2735 { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2736 { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2737 { STRING_COMMA_LEN (".toc"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2738 { STRING_COMMA_LEN (".toc1"), 0, SHT_PROGBITS
, SHF_ALLOC
+ SHF_WRITE
},
2739 { STRING_COMMA_LEN (".tocbss"), 0, SHT_NOBITS
, SHF_ALLOC
+ SHF_WRITE
},
2740 { NULL
, 0, 0, 0, 0 }
2743 enum _ppc64_sec_type
{
2749 struct _ppc64_elf_section_data
2751 struct bfd_elf_section_data elf
;
2755 /* An array with one entry for each opd function descriptor. */
2756 struct _opd_sec_data
2758 /* Points to the function code section for local opd entries. */
2759 asection
**func_sec
;
2761 /* After editing .opd, adjust references to opd local syms. */
2765 /* An array for toc sections, indexed by offset/8. */
2766 struct _toc_sec_data
2768 /* Specifies the relocation symbol index used at a given toc offset. */
2771 /* And the relocation addend. */
2776 enum _ppc64_sec_type sec_type
:2;
2778 /* Flag set when small branches are detected. Used to
2779 select suitable defaults for the stub group size. */
2780 unsigned int has_14bit_branch
:1;
2783 #define ppc64_elf_section_data(sec) \
2784 ((struct _ppc64_elf_section_data *) elf_section_data (sec))
2787 ppc64_elf_new_section_hook (bfd
*abfd
, asection
*sec
)
2789 if (!sec
->used_by_bfd
)
2791 struct _ppc64_elf_section_data
*sdata
;
2792 bfd_size_type amt
= sizeof (*sdata
);
2794 sdata
= bfd_zalloc (abfd
, amt
);
2797 sec
->used_by_bfd
= sdata
;
2800 return _bfd_elf_new_section_hook (abfd
, sec
);
2803 static struct _opd_sec_data
*
2804 get_opd_info (asection
* sec
)
2807 && ppc64_elf_section_data (sec
) != NULL
2808 && ppc64_elf_section_data (sec
)->sec_type
== sec_opd
)
2809 return &ppc64_elf_section_data (sec
)->u
.opd
;
2813 /* Parameters for the qsort hook. */
2814 static bfd_boolean synthetic_relocatable
;
2816 /* qsort comparison function for ppc64_elf_get_synthetic_symtab. */
2819 compare_symbols (const void *ap
, const void *bp
)
2821 const asymbol
*a
= * (const asymbol
**) ap
;
2822 const asymbol
*b
= * (const asymbol
**) bp
;
2824 /* Section symbols first. */
2825 if ((a
->flags
& BSF_SECTION_SYM
) && !(b
->flags
& BSF_SECTION_SYM
))
2827 if (!(a
->flags
& BSF_SECTION_SYM
) && (b
->flags
& BSF_SECTION_SYM
))
2830 /* then .opd symbols. */
2831 if (strcmp (a
->section
->name
, ".opd") == 0
2832 && strcmp (b
->section
->name
, ".opd") != 0)
2834 if (strcmp (a
->section
->name
, ".opd") != 0
2835 && strcmp (b
->section
->name
, ".opd") == 0)
2838 /* then other code symbols. */
2839 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2840 == (SEC_CODE
| SEC_ALLOC
)
2841 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2842 != (SEC_CODE
| SEC_ALLOC
))
2845 if ((a
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2846 != (SEC_CODE
| SEC_ALLOC
)
2847 && (b
->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
2848 == (SEC_CODE
| SEC_ALLOC
))
2851 if (synthetic_relocatable
)
2853 if (a
->section
->id
< b
->section
->id
)
2856 if (a
->section
->id
> b
->section
->id
)
2860 if (a
->value
+ a
->section
->vma
< b
->value
+ b
->section
->vma
)
2863 if (a
->value
+ a
->section
->vma
> b
->value
+ b
->section
->vma
)
2866 /* For syms with the same value, prefer strong dynamic global function
2867 syms over other syms. */
2868 if ((a
->flags
& BSF_GLOBAL
) != 0 && (b
->flags
& BSF_GLOBAL
) == 0)
2871 if ((a
->flags
& BSF_GLOBAL
) == 0 && (b
->flags
& BSF_GLOBAL
) != 0)
2874 if ((a
->flags
& BSF_FUNCTION
) != 0 && (b
->flags
& BSF_FUNCTION
) == 0)
2877 if ((a
->flags
& BSF_FUNCTION
) == 0 && (b
->flags
& BSF_FUNCTION
) != 0)
2880 if ((a
->flags
& BSF_WEAK
) == 0 && (b
->flags
& BSF_WEAK
) != 0)
2883 if ((a
->flags
& BSF_WEAK
) != 0 && (b
->flags
& BSF_WEAK
) == 0)
2886 if ((a
->flags
& BSF_DYNAMIC
) != 0 && (b
->flags
& BSF_DYNAMIC
) == 0)
2889 if ((a
->flags
& BSF_DYNAMIC
) == 0 && (b
->flags
& BSF_DYNAMIC
) != 0)
2895 /* Search SYMS for a symbol of the given VALUE. */
2898 sym_exists_at (asymbol
**syms
, long lo
, long hi
, int id
, bfd_vma value
)
2906 mid
= (lo
+ hi
) >> 1;
2907 if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
< value
)
2909 else if (syms
[mid
]->value
+ syms
[mid
]->section
->vma
> value
)
2919 mid
= (lo
+ hi
) >> 1;
2920 if (syms
[mid
]->section
->id
< id
)
2922 else if (syms
[mid
]->section
->id
> id
)
2924 else if (syms
[mid
]->value
< value
)
2926 else if (syms
[mid
]->value
> value
)
2936 section_covers_vma (bfd
*abfd ATTRIBUTE_UNUSED
, asection
*section
, void *ptr
)
2938 bfd_vma vma
= *(bfd_vma
*) ptr
;
2939 return ((section
->flags
& SEC_ALLOC
) != 0
2940 && section
->vma
<= vma
2941 && vma
< section
->vma
+ section
->size
);
2944 /* Create synthetic symbols, effectively restoring "dot-symbol" function
2945 entry syms. Also generate @plt symbols for the glink branch table. */
2948 ppc64_elf_get_synthetic_symtab (bfd
*abfd
,
2949 long static_count
, asymbol
**static_syms
,
2950 long dyn_count
, asymbol
**dyn_syms
,
2957 long symcount
, codesecsym
, codesecsymend
, secsymend
, opdsymend
;
2959 bfd_boolean relocatable
= (abfd
->flags
& (EXEC_P
| DYNAMIC
)) == 0;
2964 opd
= bfd_get_section_by_name (abfd
, ".opd");
2968 symcount
= static_count
;
2970 symcount
+= dyn_count
;
2974 syms
= bfd_malloc ((symcount
+ 1) * sizeof (*syms
));
2978 if (!relocatable
&& static_count
!= 0 && dyn_count
!= 0)
2980 /* Use both symbol tables. */
2981 memcpy (syms
, static_syms
, static_count
* sizeof (*syms
));
2982 memcpy (syms
+ static_count
, dyn_syms
, (dyn_count
+ 1) * sizeof (*syms
));
2984 else if (!relocatable
&& static_count
== 0)
2985 memcpy (syms
, dyn_syms
, (symcount
+ 1) * sizeof (*syms
));
2987 memcpy (syms
, static_syms
, (symcount
+ 1) * sizeof (*syms
));
2989 synthetic_relocatable
= relocatable
;
2990 qsort (syms
, symcount
, sizeof (*syms
), compare_symbols
);
2992 if (!relocatable
&& symcount
> 1)
2995 /* Trim duplicate syms, since we may have merged the normal and
2996 dynamic symbols. Actually, we only care about syms that have
2997 different values, so trim any with the same value. */
2998 for (i
= 1, j
= 1; i
< symcount
; ++i
)
2999 if (syms
[i
- 1]->value
+ syms
[i
- 1]->section
->vma
3000 != syms
[i
]->value
+ syms
[i
]->section
->vma
)
3001 syms
[j
++] = syms
[i
];
3006 if (strcmp (syms
[i
]->section
->name
, ".opd") == 0)
3010 for (; i
< symcount
; ++i
)
3011 if (((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3012 != (SEC_CODE
| SEC_ALLOC
))
3013 || (syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3017 for (; i
< symcount
; ++i
)
3018 if ((syms
[i
]->flags
& BSF_SECTION_SYM
) == 0)
3022 for (; i
< symcount
; ++i
)
3023 if (strcmp (syms
[i
]->section
->name
, ".opd") != 0)
3027 for (; i
< symcount
; ++i
)
3028 if ((syms
[i
]->section
->flags
& (SEC_CODE
| SEC_ALLOC
| SEC_THREAD_LOCAL
))
3029 != (SEC_CODE
| SEC_ALLOC
))
3037 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3042 if (opdsymend
== secsymend
)
3045 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3046 relcount
= (opd
->flags
& SEC_RELOC
) ? opd
->reloc_count
: 0;
3050 if (!(*slurp_relocs
) (abfd
, opd
, static_syms
, FALSE
))
3057 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3061 while (r
< opd
->relocation
+ relcount
3062 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3065 if (r
== opd
->relocation
+ relcount
)
3068 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3071 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3074 sym
= *r
->sym_ptr_ptr
;
3075 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3076 sym
->section
->id
, sym
->value
+ r
->addend
))
3079 size
+= sizeof (asymbol
);
3080 size
+= strlen (syms
[i
]->name
) + 2;
3084 s
= *ret
= bfd_malloc (size
);
3091 names
= (char *) (s
+ count
);
3093 for (i
= secsymend
, r
= opd
->relocation
; i
< opdsymend
; ++i
)
3097 while (r
< opd
->relocation
+ relcount
3098 && r
->address
< syms
[i
]->value
+ opd
->vma
)
3101 if (r
== opd
->relocation
+ relcount
)
3104 if (r
->address
!= syms
[i
]->value
+ opd
->vma
)
3107 if (r
->howto
->type
!= R_PPC64_ADDR64
)
3110 sym
= *r
->sym_ptr_ptr
;
3111 if (!sym_exists_at (syms
, opdsymend
, symcount
,
3112 sym
->section
->id
, sym
->value
+ r
->addend
))
3117 s
->flags
|= BSF_SYNTHETIC
;
3118 s
->section
= sym
->section
;
3119 s
->value
= sym
->value
+ r
->addend
;
3122 len
= strlen (syms
[i
]->name
);
3123 memcpy (names
, syms
[i
]->name
, len
+ 1);
3125 /* Have udata.p point back to the original symbol this
3126 synthetic symbol was derived from. */
3127 s
->udata
.p
= syms
[i
];
3134 bfd_boolean (*slurp_relocs
) (bfd
*, asection
*, asymbol
**, bfd_boolean
);
3138 bfd_vma glink_vma
= 0, resolv_vma
= 0;
3139 asection
*dynamic
, *glink
= NULL
, *relplt
= NULL
;
3142 if (!bfd_malloc_and_get_section (abfd
, opd
, &contents
))
3146 free_contents_and_exit
:
3154 for (i
= secsymend
; i
< opdsymend
; ++i
)
3158 /* Ignore bogus symbols. */
3159 if (syms
[i
]->value
> opd
->size
- 8)
3162 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3163 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3166 size
+= sizeof (asymbol
);
3167 size
+= strlen (syms
[i
]->name
) + 2;
3171 /* Get start of .glink stubs from DT_PPC64_GLINK. */
3173 && (dynamic
= bfd_get_section_by_name (abfd
, ".dynamic")) != NULL
)
3175 bfd_byte
*dynbuf
, *extdyn
, *extdynend
;
3177 void (*swap_dyn_in
) (bfd
*, const void *, Elf_Internal_Dyn
*);
3179 if (!bfd_malloc_and_get_section (abfd
, dynamic
, &dynbuf
))
3180 goto free_contents_and_exit
;
3182 extdynsize
= get_elf_backend_data (abfd
)->s
->sizeof_dyn
;
3183 swap_dyn_in
= get_elf_backend_data (abfd
)->s
->swap_dyn_in
;
3186 extdynend
= extdyn
+ dynamic
->size
;
3187 for (; extdyn
< extdynend
; extdyn
+= extdynsize
)
3189 Elf_Internal_Dyn dyn
;
3190 (*swap_dyn_in
) (abfd
, extdyn
, &dyn
);
3192 if (dyn
.d_tag
== DT_NULL
)
3195 if (dyn
.d_tag
== DT_PPC64_GLINK
)
3197 /* The first glink stub starts at offset 32; see comment in
3198 ppc64_elf_finish_dynamic_sections. */
3199 glink_vma
= dyn
.d_un
.d_val
+ 32;
3200 /* The .glink section usually does not survive the final
3201 link; search for the section (usually .text) where the
3202 glink stubs now reside. */
3203 glink
= bfd_sections_find_if (abfd
, section_covers_vma
,
3214 /* Determine __glink trampoline by reading the relative branch
3215 from the first glink stub. */
3217 if (bfd_get_section_contents (abfd
, glink
, buf
,
3218 glink_vma
+ 4 - glink
->vma
, 4))
3220 unsigned int insn
= bfd_get_32 (abfd
, buf
);
3222 if ((insn
& ~0x3fffffc) == 0)
3223 resolv_vma
= glink_vma
+ 4 + (insn
^ 0x2000000) - 0x2000000;
3227 size
+= sizeof (asymbol
) + sizeof ("__glink_PLTresolve");
3229 relplt
= bfd_get_section_by_name (abfd
, ".rela.plt");
3232 slurp_relocs
= get_elf_backend_data (abfd
)->s
->slurp_reloc_table
;
3233 if (! (*slurp_relocs
) (abfd
, relplt
, dyn_syms
, TRUE
))
3234 goto free_contents_and_exit
;
3236 plt_count
= relplt
->size
/ sizeof (Elf64_External_Rela
);
3237 size
+= plt_count
* sizeof (asymbol
);
3239 p
= relplt
->relocation
;
3240 for (i
= 0; i
< plt_count
; i
++, p
++)
3242 size
+= strlen ((*p
->sym_ptr_ptr
)->name
) + sizeof ("@plt");
3244 size
+= sizeof ("+0x") - 1 + 16;
3249 s
= *ret
= bfd_malloc (size
);
3251 goto free_contents_and_exit
;
3253 names
= (char *) (s
+ count
+ plt_count
+ (resolv_vma
!= 0));
3255 for (i
= secsymend
; i
< opdsymend
; ++i
)
3259 if (syms
[i
]->value
> opd
->size
- 8)
3262 ent
= bfd_get_64 (abfd
, contents
+ syms
[i
]->value
);
3263 if (!sym_exists_at (syms
, opdsymend
, symcount
, -1, ent
))
3267 asection
*sec
= abfd
->sections
;
3274 long mid
= (lo
+ hi
) >> 1;
3275 if (syms
[mid
]->section
->vma
< ent
)
3277 else if (syms
[mid
]->section
->vma
> ent
)
3281 sec
= syms
[mid
]->section
;
3286 if (lo
>= hi
&& lo
> codesecsym
)
3287 sec
= syms
[lo
- 1]->section
;
3289 for (; sec
!= NULL
; sec
= sec
->next
)
3293 /* SEC_LOAD may not be set if SEC is from a separate debug
3295 if ((sec
->flags
& SEC_ALLOC
) == 0)
3297 if ((sec
->flags
& SEC_CODE
) != 0)
3300 s
->flags
|= BSF_SYNTHETIC
;
3301 s
->value
= ent
- s
->section
->vma
;
3304 len
= strlen (syms
[i
]->name
);
3305 memcpy (names
, syms
[i
]->name
, len
+ 1);
3307 /* Have udata.p point back to the original symbol this
3308 synthetic symbol was derived from. */
3309 s
->udata
.p
= syms
[i
];
3315 if (glink
!= NULL
&& relplt
!= NULL
)
3319 /* Add a symbol for the main glink trampoline. */
3320 memset (s
, 0, sizeof *s
);
3322 s
->flags
= BSF_GLOBAL
| BSF_SYNTHETIC
;
3324 s
->value
= resolv_vma
- glink
->vma
;
3326 memcpy (names
, "__glink_PLTresolve", sizeof ("__glink_PLTresolve"));
3327 names
+= sizeof ("__glink_PLTresolve");
3332 /* FIXME: It would be very much nicer to put sym@plt on the
3333 stub rather than on the glink branch table entry. The
3334 objdump disassembler would then use a sensible symbol
3335 name on plt calls. The difficulty in doing so is
3336 a) finding the stubs, and,
3337 b) matching stubs against plt entries, and,
3338 c) there can be multiple stubs for a given plt entry.
3340 Solving (a) could be done by code scanning, but older
3341 ppc64 binaries used different stubs to current code.
3342 (b) is the tricky one since you need to known the toc
3343 pointer for at least one function that uses a pic stub to
3344 be able to calculate the plt address referenced.
3345 (c) means gdb would need to set multiple breakpoints (or
3346 find the glink branch itself) when setting breakpoints
3347 for pending shared library loads. */
3348 p
= relplt
->relocation
;
3349 for (i
= 0; i
< plt_count
; i
++, p
++)
3353 *s
= **p
->sym_ptr_ptr
;
3354 /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
3355 we are defining a symbol, ensure one of them is set. */
3356 if ((s
->flags
& BSF_LOCAL
) == 0)
3357 s
->flags
|= BSF_GLOBAL
;
3358 s
->flags
|= BSF_SYNTHETIC
;
3360 s
->value
= glink_vma
- glink
->vma
;
3363 len
= strlen ((*p
->sym_ptr_ptr
)->name
);
3364 memcpy (names
, (*p
->sym_ptr_ptr
)->name
, len
);
3368 memcpy (names
, "+0x", sizeof ("+0x") - 1);
3369 names
+= sizeof ("+0x") - 1;
3370 bfd_sprintf_vma (abfd
, names
, p
->addend
);
3371 names
+= strlen (names
);
3373 memcpy (names
, "@plt", sizeof ("@plt"));
3374 names
+= sizeof ("@plt");
3389 /* The following functions are specific to the ELF linker, while
3390 functions above are used generally. Those named ppc64_elf_* are
3391 called by the main ELF linker code. They appear in this file more
3392 or less in the order in which they are called. eg.
3393 ppc64_elf_check_relocs is called early in the link process,
3394 ppc64_elf_finish_dynamic_sections is one of the last functions
3397 PowerPC64-ELF uses a similar scheme to PowerPC64-XCOFF in that
3398 functions have both a function code symbol and a function descriptor
3399 symbol. A call to foo in a relocatable object file looks like:
3406 The function definition in another object file might be:
3410 . .quad .TOC.@tocbase
3416 When the linker resolves the call during a static link, the branch
3417 unsurprisingly just goes to .foo and the .opd information is unused.
3418 If the function definition is in a shared library, things are a little
3419 different: The call goes via a plt call stub, the opd information gets
3420 copied to the plt, and the linker patches the nop.
3428 . addis 12,2,Lfoo@toc@ha # in practice, the call stub
3429 . addi 12,12,Lfoo@toc@l # is slightly optimized, but
3430 . std 2,40(1) # this is the general idea
3438 . Lfoo: reloc (R_PPC64_JMP_SLOT, foo)
3440 The "reloc ()" notation is supposed to indicate that the linker emits
3441 an R_PPC64_JMP_SLOT reloc against foo. The dynamic linker does the opd
3444 What are the difficulties here? Well, firstly, the relocations
3445 examined by the linker in check_relocs are against the function code
3446 sym .foo, while the dynamic relocation in the plt is emitted against
3447 the function descriptor symbol, foo. Somewhere along the line, we need
3448 to carefully copy dynamic link information from one symbol to the other.
3449 Secondly, the generic part of the elf linker will make .foo a dynamic
3450 symbol as is normal for most other backends. We need foo dynamic
3451 instead, at least for an application final link. However, when
3452 creating a shared library containing foo, we need to have both symbols
3453 dynamic so that references to .foo are satisfied during the early
3454 stages of linking. Otherwise the linker might decide to pull in a
3455 definition from some other object, eg. a static library.
3457 Update: As of August 2004, we support a new convention. Function
3458 calls may use the function descriptor symbol, ie. "bl foo". This
3459 behaves exactly as "bl .foo". */
3461 /* Of those relocs that might be copied as dynamic relocs, this function
3462 selects those that must be copied when linking a shared library,
3463 even when the symbol is local. */
3466 must_be_dyn_reloc (struct bfd_link_info
*info
,
3467 enum elf_ppc64_reloc_type r_type
)
3479 case R_PPC64_TPREL16
:
3480 case R_PPC64_TPREL16_LO
:
3481 case R_PPC64_TPREL16_HI
:
3482 case R_PPC64_TPREL16_HA
:
3483 case R_PPC64_TPREL16_DS
:
3484 case R_PPC64_TPREL16_LO_DS
:
3485 case R_PPC64_TPREL16_HIGHER
:
3486 case R_PPC64_TPREL16_HIGHERA
:
3487 case R_PPC64_TPREL16_HIGHEST
:
3488 case R_PPC64_TPREL16_HIGHESTA
:
3489 case R_PPC64_TPREL64
:
3490 return !info
->executable
;
3494 /* If ELIMINATE_COPY_RELOCS is non-zero, the linker will try to avoid
3495 copying dynamic variables from a shared lib into an app's dynbss
3496 section, and instead use a dynamic relocation to point into the
3497 shared lib. With code that gcc generates, it's vital that this be
3498 enabled; In the PowerPC64 ABI, the address of a function is actually
3499 the address of a function descriptor, which resides in the .opd
3500 section. gcc uses the descriptor directly rather than going via the
3501 GOT as some other ABI's do, which means that initialized function
3502 pointers must reference the descriptor. Thus, a function pointer
3503 initialized to the address of a function in a shared library will
3504 either require a copy reloc, or a dynamic reloc. Using a copy reloc
3505 redefines the function descriptor symbol to point to the copy. This
3506 presents a problem as a plt entry for that function is also
3507 initialized from the function descriptor symbol and the copy reloc
3508 may not be initialized first. */
3509 #define ELIMINATE_COPY_RELOCS 1
3511 /* Section name for stubs is the associated section name plus this
3513 #define STUB_SUFFIX ".stub"
3516 ppc_stub_long_branch:
3517 Used when a 14 bit branch (or even a 24 bit branch) can't reach its
3518 destination, but a 24 bit branch in a stub section will reach.
3521 ppc_stub_plt_branch:
3522 Similar to the above, but a 24 bit branch in the stub section won't
3523 reach its destination.
3524 . addis %r12,%r2,xxx@toc@ha
3525 . ld %r11,xxx@toc@l(%r12)
3530 Used to call a function in a shared library. If it so happens that
3531 the plt entry referenced crosses a 64k boundary, then an extra
3532 "addi %r12,%r12,xxx@toc@l" will be inserted before the "mtctr".
3533 . addis %r12,%r2,xxx@toc@ha
3535 . ld %r11,xxx+0@toc@l(%r12)
3537 . ld %r2,xxx+8@toc@l(%r12)
3538 . ld %r11,xxx+16@toc@l(%r12)
3541 ppc_stub_long_branch and ppc_stub_plt_branch may also have additional
3542 code to adjust the value and save r2 to support multiple toc sections.
3543 A ppc_stub_long_branch with an r2 offset looks like:
3545 . addis %r2,%r2,off@ha
3546 . addi %r2,%r2,off@l
3549 A ppc_stub_plt_branch with an r2 offset looks like:
3551 . addis %r12,%r2,xxx@toc@ha
3552 . ld %r11,xxx@toc@l(%r12)
3553 . addis %r2,%r2,off@ha
3554 . addi %r2,%r2,off@l
3558 In cases where the "addis" instruction would add zero, the "addis" is
3559 omitted and following instructions modified slightly in some cases.
3562 enum ppc_stub_type
{
3564 ppc_stub_long_branch
,
3565 ppc_stub_long_branch_r2off
,
3566 ppc_stub_plt_branch
,
3567 ppc_stub_plt_branch_r2off
,
3571 struct ppc_stub_hash_entry
{
3573 /* Base hash table entry structure. */
3574 struct bfd_hash_entry root
;
3576 enum ppc_stub_type stub_type
;
3578 /* The stub section. */
3581 /* Offset within stub_sec of the beginning of this stub. */
3582 bfd_vma stub_offset
;
3584 /* Given the symbol's value and its section we can determine its final
3585 value when building the stubs (so the stub knows where to jump. */
3586 bfd_vma target_value
;
3587 asection
*target_section
;
3589 /* The symbol table entry, if any, that this was derived from. */
3590 struct ppc_link_hash_entry
*h
;
3591 struct plt_entry
*plt_ent
;
3593 /* And the reloc addend that this was derived from. */
3596 /* Where this stub is being called from, or, in the case of combined
3597 stub sections, the first input section in the group. */
3601 struct ppc_branch_hash_entry
{
3603 /* Base hash table entry structure. */
3604 struct bfd_hash_entry root
;
3606 /* Offset within branch lookup table. */
3607 unsigned int offset
;
3609 /* Generation marker. */
3613 struct ppc_link_hash_entry
3615 struct elf_link_hash_entry elf
;
3618 /* A pointer to the most recently used stub hash entry against this
3620 struct ppc_stub_hash_entry
*stub_cache
;
3622 /* A pointer to the next symbol starting with a '.' */
3623 struct ppc_link_hash_entry
*next_dot_sym
;
3626 /* Track dynamic relocs copied for this symbol. */
3627 struct elf_dyn_relocs
*dyn_relocs
;
3629 /* Link between function code and descriptor symbols. */
3630 struct ppc_link_hash_entry
*oh
;
3632 /* Flag function code and descriptor symbols. */
3633 unsigned int is_func
:1;
3634 unsigned int is_func_descriptor
:1;
3635 unsigned int fake
:1;
3637 /* Whether global opd/toc sym has been adjusted or not.
3638 After ppc64_elf_edit_opd/ppc64_elf_edit_toc has run, this flag
3639 should be set for all globals defined in any opd/toc section. */
3640 unsigned int adjust_done
:1;
3642 /* Set if we twiddled this symbol to weak at some stage. */
3643 unsigned int was_undefined
:1;
3645 /* Contexts in which symbol is used in the GOT (or TOC).
3646 TLS_GD .. TLS_EXPLICIT bits are or'd into the mask as the
3647 corresponding relocs are encountered during check_relocs.
3648 tls_optimize clears TLS_GD .. TLS_TPREL when optimizing to
3649 indicate the corresponding GOT entry type is not needed.
3650 tls_optimize may also set TLS_TPRELGD when a GD reloc turns into
3651 a TPREL one. We use a separate flag rather than setting TPREL
3652 just for convenience in distinguishing the two cases. */
3653 #define TLS_GD 1 /* GD reloc. */
3654 #define TLS_LD 2 /* LD reloc. */
3655 #define TLS_TPREL 4 /* TPREL reloc, => IE. */
3656 #define TLS_DTPREL 8 /* DTPREL reloc, => LD. */
3657 #define TLS_TLS 16 /* Any TLS reloc. */
3658 #define TLS_EXPLICIT 32 /* Marks TOC section TLS relocs. */
3659 #define TLS_TPRELGD 64 /* TPREL reloc resulting from GD->IE. */
3660 #define PLT_IFUNC 128 /* STT_GNU_IFUNC. */
3661 unsigned char tls_mask
;
3664 /* ppc64 ELF linker hash table. */
3666 struct ppc_link_hash_table
3668 struct elf_link_hash_table elf
;
3670 /* The stub hash table. */
3671 struct bfd_hash_table stub_hash_table
;
3673 /* Another hash table for plt_branch stubs. */
3674 struct bfd_hash_table branch_hash_table
;
3676 /* Linker stub bfd. */
3679 /* Linker call-backs. */
3680 asection
* (*add_stub_section
) (const char *, asection
*);
3681 void (*layout_sections_again
) (void);
3683 /* Array to keep track of which stub sections have been created, and
3684 information on stub grouping. */
3686 /* This is the section to which stubs in the group will be attached. */
3688 /* The stub section. */
3690 /* Along with elf_gp, specifies the TOC pointer used in this group. */
3694 /* Temp used when calculating TOC pointers. */
3697 asection
*toc_first_sec
;
3699 /* Highest input section id. */
3702 /* Highest output section index. */
3705 /* Used when adding symbols. */
3706 struct ppc_link_hash_entry
*dot_syms
;
3708 /* List of input sections for each output section. */
3709 asection
**input_list
;
3711 /* Short-cuts to get to dynamic linker sections. */
3724 /* Shortcut to .__tls_get_addr and __tls_get_addr. */
3725 struct ppc_link_hash_entry
*tls_get_addr
;
3726 struct ppc_link_hash_entry
*tls_get_addr_fd
;
3728 /* The size of reliplt used by got entry relocs. */
3729 bfd_size_type got_reli_size
;
3732 unsigned long stub_count
[ppc_stub_plt_call
];
3734 /* Number of stubs against global syms. */
3735 unsigned long stub_globals
;
3737 /* Set if we should emit symbols for stubs. */
3738 unsigned int emit_stub_syms
:1;
3740 /* Set if __tls_get_addr optimization should not be done. */
3741 unsigned int no_tls_get_addr_opt
:1;
3743 /* Support for multiple toc sections. */
3744 unsigned int do_multi_toc
:1;
3745 unsigned int multi_toc_needed
:1;
3746 unsigned int second_toc_pass
:1;
3747 unsigned int do_toc_opt
:1;
3750 unsigned int stub_error
:1;
3752 /* Temp used by ppc64_elf_process_dot_syms. */
3753 unsigned int twiddled_syms
:1;
3755 /* Incremented every time we size stubs. */
3756 unsigned int stub_iteration
;
3758 /* Small local sym cache. */
3759 struct sym_cache sym_cache
;
3762 /* Rename some of the generic section flags to better document how they
3765 /* Nonzero if this section has TLS related relocations. */
3766 #define has_tls_reloc sec_flg0
3768 /* Nonzero if this section has a call to __tls_get_addr. */
3769 #define has_tls_get_addr_call sec_flg1
3771 /* Nonzero if this section has any toc or got relocs. */
3772 #define has_toc_reloc sec_flg2
3774 /* Nonzero if this section has a call to another section that uses
3776 #define makes_toc_func_call sec_flg3
3778 /* Recursion protection when determining above flag. */
3779 #define call_check_in_progress sec_flg4
3780 #define call_check_done sec_flg5
3782 /* Get the ppc64 ELF linker hash table from a link_info structure. */
3784 #define ppc_hash_table(p) \
3785 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
3786 == PPC64_ELF_DATA ? ((struct ppc_link_hash_table *) ((p)->hash)) : NULL)
3788 #define ppc_stub_hash_lookup(table, string, create, copy) \
3789 ((struct ppc_stub_hash_entry *) \
3790 bfd_hash_lookup ((table), (string), (create), (copy)))
3792 #define ppc_branch_hash_lookup(table, string, create, copy) \
3793 ((struct ppc_branch_hash_entry *) \
3794 bfd_hash_lookup ((table), (string), (create), (copy)))
3796 /* Create an entry in the stub hash table. */
3798 static struct bfd_hash_entry
*
3799 stub_hash_newfunc (struct bfd_hash_entry
*entry
,
3800 struct bfd_hash_table
*table
,
3803 /* Allocate the structure if it has not already been allocated by a
3807 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_stub_hash_entry
));
3812 /* Call the allocation method of the superclass. */
3813 entry
= bfd_hash_newfunc (entry
, table
, string
);
3816 struct ppc_stub_hash_entry
*eh
;
3818 /* Initialize the local fields. */
3819 eh
= (struct ppc_stub_hash_entry
*) entry
;
3820 eh
->stub_type
= ppc_stub_none
;
3821 eh
->stub_sec
= NULL
;
3822 eh
->stub_offset
= 0;
3823 eh
->target_value
= 0;
3824 eh
->target_section
= NULL
;
3832 /* Create an entry in the branch hash table. */
3834 static struct bfd_hash_entry
*
3835 branch_hash_newfunc (struct bfd_hash_entry
*entry
,
3836 struct bfd_hash_table
*table
,
3839 /* Allocate the structure if it has not already been allocated by a
3843 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_branch_hash_entry
));
3848 /* Call the allocation method of the superclass. */
3849 entry
= bfd_hash_newfunc (entry
, table
, string
);
3852 struct ppc_branch_hash_entry
*eh
;
3854 /* Initialize the local fields. */
3855 eh
= (struct ppc_branch_hash_entry
*) entry
;
3863 /* Create an entry in a ppc64 ELF linker hash table. */
3865 static struct bfd_hash_entry
*
3866 link_hash_newfunc (struct bfd_hash_entry
*entry
,
3867 struct bfd_hash_table
*table
,
3870 /* Allocate the structure if it has not already been allocated by a
3874 entry
= bfd_hash_allocate (table
, sizeof (struct ppc_link_hash_entry
));
3879 /* Call the allocation method of the superclass. */
3880 entry
= _bfd_elf_link_hash_newfunc (entry
, table
, string
);
3883 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) entry
;
3885 memset (&eh
->u
.stub_cache
, 0,
3886 (sizeof (struct ppc_link_hash_entry
)
3887 - offsetof (struct ppc_link_hash_entry
, u
.stub_cache
)));
3889 /* When making function calls, old ABI code references function entry
3890 points (dot symbols), while new ABI code references the function
3891 descriptor symbol. We need to make any combination of reference and
3892 definition work together, without breaking archive linking.
3894 For a defined function "foo" and an undefined call to "bar":
3895 An old object defines "foo" and ".foo", references ".bar" (possibly
3897 A new object defines "foo" and references "bar".
3899 A new object thus has no problem with its undefined symbols being
3900 satisfied by definitions in an old object. On the other hand, the
3901 old object won't have ".bar" satisfied by a new object.
3903 Keep a list of newly added dot-symbols. */
3905 if (string
[0] == '.')
3907 struct ppc_link_hash_table
*htab
;
3909 htab
= (struct ppc_link_hash_table
*) table
;
3910 eh
->u
.next_dot_sym
= htab
->dot_syms
;
3911 htab
->dot_syms
= eh
;
3918 /* Create a ppc64 ELF linker hash table. */
3920 static struct bfd_link_hash_table
*
3921 ppc64_elf_link_hash_table_create (bfd
*abfd
)
3923 struct ppc_link_hash_table
*htab
;
3924 bfd_size_type amt
= sizeof (struct ppc_link_hash_table
);
3926 htab
= bfd_zmalloc (amt
);
3930 if (!_bfd_elf_link_hash_table_init (&htab
->elf
, abfd
, link_hash_newfunc
,
3931 sizeof (struct ppc_link_hash_entry
),
3938 /* Init the stub hash table too. */
3939 if (!bfd_hash_table_init (&htab
->stub_hash_table
, stub_hash_newfunc
,
3940 sizeof (struct ppc_stub_hash_entry
)))
3943 /* And the branch hash table. */
3944 if (!bfd_hash_table_init (&htab
->branch_hash_table
, branch_hash_newfunc
,
3945 sizeof (struct ppc_branch_hash_entry
)))
3948 /* Initializing two fields of the union is just cosmetic. We really
3949 only care about glist, but when compiled on a 32-bit host the
3950 bfd_vma fields are larger. Setting the bfd_vma to zero makes
3951 debugger inspection of these fields look nicer. */
3952 htab
->elf
.init_got_refcount
.refcount
= 0;
3953 htab
->elf
.init_got_refcount
.glist
= NULL
;
3954 htab
->elf
.init_plt_refcount
.refcount
= 0;
3955 htab
->elf
.init_plt_refcount
.glist
= NULL
;
3956 htab
->elf
.init_got_offset
.offset
= 0;
3957 htab
->elf
.init_got_offset
.glist
= NULL
;
3958 htab
->elf
.init_plt_offset
.offset
= 0;
3959 htab
->elf
.init_plt_offset
.glist
= NULL
;
3961 return &htab
->elf
.root
;
3964 /* Free the derived linker hash table. */
3967 ppc64_elf_link_hash_table_free (struct bfd_link_hash_table
*hash
)
3969 struct ppc_link_hash_table
*ret
= (struct ppc_link_hash_table
*) hash
;
3971 bfd_hash_table_free (&ret
->stub_hash_table
);
3972 bfd_hash_table_free (&ret
->branch_hash_table
);
3973 _bfd_generic_link_hash_table_free (hash
);
3976 /* Satisfy the ELF linker by filling in some fields in our fake bfd. */
3979 ppc64_elf_init_stub_bfd (bfd
*abfd
, struct bfd_link_info
*info
)
3981 struct ppc_link_hash_table
*htab
;
3983 elf_elfheader (abfd
)->e_ident
[EI_CLASS
] = ELFCLASS64
;
3985 /* Always hook our dynamic sections into the first bfd, which is the
3986 linker created stub bfd. This ensures that the GOT header is at
3987 the start of the output TOC section. */
3988 htab
= ppc_hash_table (info
);
3991 htab
->stub_bfd
= abfd
;
3992 htab
->elf
.dynobj
= abfd
;
3995 /* Build a name for an entry in the stub hash table. */
3998 ppc_stub_name (const asection
*input_section
,
3999 const asection
*sym_sec
,
4000 const struct ppc_link_hash_entry
*h
,
4001 const Elf_Internal_Rela
*rel
)
4006 /* rel->r_addend is actually 64 bit, but who uses more than +/- 2^31
4007 offsets from a sym as a branch target? In fact, we could
4008 probably assume the addend is always zero. */
4009 BFD_ASSERT (((int) rel
->r_addend
& 0xffffffff) == rel
->r_addend
);
4013 len
= 8 + 1 + strlen (h
->elf
.root
.root
.string
) + 1 + 8 + 1;
4014 stub_name
= bfd_malloc (len
);
4015 if (stub_name
== NULL
)
4018 sprintf (stub_name
, "%08x.%s+%x",
4019 input_section
->id
& 0xffffffff,
4020 h
->elf
.root
.root
.string
,
4021 (int) rel
->r_addend
& 0xffffffff);
4025 len
= 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
4026 stub_name
= bfd_malloc (len
);
4027 if (stub_name
== NULL
)
4030 sprintf (stub_name
, "%08x.%x:%x+%x",
4031 input_section
->id
& 0xffffffff,
4032 sym_sec
->id
& 0xffffffff,
4033 (int) ELF64_R_SYM (rel
->r_info
) & 0xffffffff,
4034 (int) rel
->r_addend
& 0xffffffff);
4036 if (stub_name
[len
- 2] == '+' && stub_name
[len
- 1] == '0')
4037 stub_name
[len
- 2] = 0;
4041 /* Look up an entry in the stub hash. Stub entries are cached because
4042 creating the stub name takes a bit of time. */
4044 static struct ppc_stub_hash_entry
*
4045 ppc_get_stub_entry (const asection
*input_section
,
4046 const asection
*sym_sec
,
4047 struct ppc_link_hash_entry
*h
,
4048 const Elf_Internal_Rela
*rel
,
4049 struct ppc_link_hash_table
*htab
)
4051 struct ppc_stub_hash_entry
*stub_entry
;
4052 const asection
*id_sec
;
4054 /* If this input section is part of a group of sections sharing one
4055 stub section, then use the id of the first section in the group.
4056 Stub names need to include a section id, as there may well be
4057 more than one stub used to reach say, printf, and we need to
4058 distinguish between them. */
4059 id_sec
= htab
->stub_group
[input_section
->id
].link_sec
;
4061 if (h
!= NULL
&& h
->u
.stub_cache
!= NULL
4062 && h
->u
.stub_cache
->h
== h
4063 && h
->u
.stub_cache
->id_sec
== id_sec
)
4065 stub_entry
= h
->u
.stub_cache
;
4071 stub_name
= ppc_stub_name (id_sec
, sym_sec
, h
, rel
);
4072 if (stub_name
== NULL
)
4075 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
4076 stub_name
, FALSE
, FALSE
);
4078 h
->u
.stub_cache
= stub_entry
;
4086 /* Add a new stub entry to the stub hash. Not all fields of the new
4087 stub entry are initialised. */
4089 static struct ppc_stub_hash_entry
*
4090 ppc_add_stub (const char *stub_name
,
4092 struct bfd_link_info
*info
)
4094 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4097 struct ppc_stub_hash_entry
*stub_entry
;
4099 link_sec
= htab
->stub_group
[section
->id
].link_sec
;
4100 stub_sec
= htab
->stub_group
[section
->id
].stub_sec
;
4101 if (stub_sec
== NULL
)
4103 stub_sec
= htab
->stub_group
[link_sec
->id
].stub_sec
;
4104 if (stub_sec
== NULL
)
4110 namelen
= strlen (link_sec
->name
);
4111 len
= namelen
+ sizeof (STUB_SUFFIX
);
4112 s_name
= bfd_alloc (htab
->stub_bfd
, len
);
4116 memcpy (s_name
, link_sec
->name
, namelen
);
4117 memcpy (s_name
+ namelen
, STUB_SUFFIX
, sizeof (STUB_SUFFIX
));
4118 stub_sec
= (*htab
->add_stub_section
) (s_name
, link_sec
);
4119 if (stub_sec
== NULL
)
4121 htab
->stub_group
[link_sec
->id
].stub_sec
= stub_sec
;
4123 htab
->stub_group
[section
->id
].stub_sec
= stub_sec
;
4126 /* Enter this entry into the linker stub hash table. */
4127 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
, stub_name
,
4129 if (stub_entry
== NULL
)
4131 info
->callbacks
->einfo (_("%B: cannot create stub entry %s\n"),
4132 section
->owner
, stub_name
);
4136 stub_entry
->stub_sec
= stub_sec
;
4137 stub_entry
->stub_offset
= 0;
4138 stub_entry
->id_sec
= link_sec
;
4142 /* Create sections for linker generated code. */
4145 create_linkage_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4147 struct ppc_link_hash_table
*htab
;
4150 htab
= ppc_hash_table (info
);
4154 /* Create .sfpr for code to save and restore fp regs. */
4155 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_CODE
| SEC_READONLY
4156 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4157 htab
->sfpr
= bfd_make_section_anyway_with_flags (dynobj
, ".sfpr",
4159 if (htab
->sfpr
== NULL
4160 || ! bfd_set_section_alignment (dynobj
, htab
->sfpr
, 2))
4163 /* Create .glink for lazy dynamic linking support. */
4164 htab
->glink
= bfd_make_section_anyway_with_flags (dynobj
, ".glink",
4166 if (htab
->glink
== NULL
4167 || ! bfd_set_section_alignment (dynobj
, htab
->glink
, 3))
4170 flags
= SEC_ALLOC
| SEC_LINKER_CREATED
;
4171 htab
->iplt
= bfd_make_section_anyway_with_flags (dynobj
, ".iplt", flags
);
4172 if (htab
->iplt
== NULL
4173 || ! bfd_set_section_alignment (dynobj
, htab
->iplt
, 3))
4176 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4177 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4178 htab
->reliplt
= bfd_make_section_anyway_with_flags (dynobj
,
4181 if (htab
->reliplt
== NULL
4182 || ! bfd_set_section_alignment (dynobj
, htab
->reliplt
, 3))
4185 /* Create branch lookup table for plt_branch stubs. */
4186 flags
= (SEC_ALLOC
| SEC_LOAD
4187 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4188 htab
->brlt
= bfd_make_section_anyway_with_flags (dynobj
, ".branch_lt",
4190 if (htab
->brlt
== NULL
4191 || ! bfd_set_section_alignment (dynobj
, htab
->brlt
, 3))
4197 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_READONLY
4198 | SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_LINKER_CREATED
);
4199 htab
->relbrlt
= bfd_make_section_anyway_with_flags (dynobj
,
4202 if (htab
->relbrlt
== NULL
4203 || ! bfd_set_section_alignment (dynobj
, htab
->relbrlt
, 3))
4209 /* Create .got and .rela.got sections in ABFD, and .got in dynobj if
4210 not already done. */
4213 create_got_section (bfd
*abfd
, struct bfd_link_info
*info
)
4215 asection
*got
, *relgot
;
4217 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4219 if (!is_ppc64_elf (abfd
))
4226 if (! _bfd_elf_create_got_section (htab
->elf
.dynobj
, info
))
4229 htab
->got
= bfd_get_section_by_name (htab
->elf
.dynobj
, ".got");
4234 flags
= (SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
4235 | SEC_LINKER_CREATED
);
4237 got
= bfd_make_section_anyway_with_flags (abfd
, ".got", flags
);
4239 || !bfd_set_section_alignment (abfd
, got
, 3))
4242 relgot
= bfd_make_section_anyway_with_flags (abfd
, ".rela.got",
4243 flags
| SEC_READONLY
);
4245 || ! bfd_set_section_alignment (abfd
, relgot
, 3))
4248 ppc64_elf_tdata (abfd
)->got
= got
;
4249 ppc64_elf_tdata (abfd
)->relgot
= relgot
;
4253 /* Create the dynamic sections, and set up shortcuts. */
4256 ppc64_elf_create_dynamic_sections (bfd
*dynobj
, struct bfd_link_info
*info
)
4258 struct ppc_link_hash_table
*htab
;
4260 if (!_bfd_elf_create_dynamic_sections (dynobj
, info
))
4263 htab
= ppc_hash_table (info
);
4268 htab
->got
= bfd_get_section_by_name (dynobj
, ".got");
4269 htab
->plt
= bfd_get_section_by_name (dynobj
, ".plt");
4270 htab
->relplt
= bfd_get_section_by_name (dynobj
, ".rela.plt");
4271 htab
->dynbss
= bfd_get_section_by_name (dynobj
, ".dynbss");
4273 htab
->relbss
= bfd_get_section_by_name (dynobj
, ".rela.bss");
4275 if (!htab
->got
|| !htab
->plt
|| !htab
->relplt
|| !htab
->dynbss
4276 || (!info
->shared
&& !htab
->relbss
))
4282 /* Follow indirect and warning symbol links. */
4284 static inline struct bfd_link_hash_entry
*
4285 follow_link (struct bfd_link_hash_entry
*h
)
4287 while (h
->type
== bfd_link_hash_indirect
4288 || h
->type
== bfd_link_hash_warning
)
4293 static inline struct elf_link_hash_entry
*
4294 elf_follow_link (struct elf_link_hash_entry
*h
)
4296 return (struct elf_link_hash_entry
*) follow_link (&h
->root
);
4299 static inline struct ppc_link_hash_entry
*
4300 ppc_follow_link (struct ppc_link_hash_entry
*h
)
4302 return (struct ppc_link_hash_entry
*) follow_link (&h
->elf
.root
);
4305 /* Merge PLT info on FROM with that on TO. */
4308 move_plt_plist (struct ppc_link_hash_entry
*from
,
4309 struct ppc_link_hash_entry
*to
)
4311 if (from
->elf
.plt
.plist
!= NULL
)
4313 if (to
->elf
.plt
.plist
!= NULL
)
4315 struct plt_entry
**entp
;
4316 struct plt_entry
*ent
;
4318 for (entp
= &from
->elf
.plt
.plist
; (ent
= *entp
) != NULL
; )
4320 struct plt_entry
*dent
;
4322 for (dent
= to
->elf
.plt
.plist
; dent
!= NULL
; dent
= dent
->next
)
4323 if (dent
->addend
== ent
->addend
)
4325 dent
->plt
.refcount
+= ent
->plt
.refcount
;
4332 *entp
= to
->elf
.plt
.plist
;
4335 to
->elf
.plt
.plist
= from
->elf
.plt
.plist
;
4336 from
->elf
.plt
.plist
= NULL
;
4340 /* Copy the extra info we tack onto an elf_link_hash_entry. */
4343 ppc64_elf_copy_indirect_symbol (struct bfd_link_info
*info
,
4344 struct elf_link_hash_entry
*dir
,
4345 struct elf_link_hash_entry
*ind
)
4347 struct ppc_link_hash_entry
*edir
, *eind
;
4349 edir
= (struct ppc_link_hash_entry
*) dir
;
4350 eind
= (struct ppc_link_hash_entry
*) ind
;
4352 edir
->is_func
|= eind
->is_func
;
4353 edir
->is_func_descriptor
|= eind
->is_func_descriptor
;
4354 edir
->tls_mask
|= eind
->tls_mask
;
4355 if (eind
->oh
!= NULL
)
4356 edir
->oh
= ppc_follow_link (eind
->oh
);
4358 /* If called to transfer flags for a weakdef during processing
4359 of elf_adjust_dynamic_symbol, don't copy NON_GOT_REF.
4360 We clear it ourselves for ELIMINATE_COPY_RELOCS. */
4361 if (!(ELIMINATE_COPY_RELOCS
4362 && eind
->elf
.root
.type
!= bfd_link_hash_indirect
4363 && edir
->elf
.dynamic_adjusted
))
4364 edir
->elf
.non_got_ref
|= eind
->elf
.non_got_ref
;
4366 edir
->elf
.ref_dynamic
|= eind
->elf
.ref_dynamic
;
4367 edir
->elf
.ref_regular
|= eind
->elf
.ref_regular
;
4368 edir
->elf
.ref_regular_nonweak
|= eind
->elf
.ref_regular_nonweak
;
4369 edir
->elf
.needs_plt
|= eind
->elf
.needs_plt
;
4371 /* If we were called to copy over info for a weak sym, that's all. */
4372 if (eind
->elf
.root
.type
!= bfd_link_hash_indirect
)
4375 /* Copy over any dynamic relocs we may have on the indirect sym. */
4376 if (eind
->dyn_relocs
!= NULL
)
4378 if (edir
->dyn_relocs
!= NULL
)
4380 struct elf_dyn_relocs
**pp
;
4381 struct elf_dyn_relocs
*p
;
4383 /* Add reloc counts against the indirect sym to the direct sym
4384 list. Merge any entries against the same section. */
4385 for (pp
= &eind
->dyn_relocs
; (p
= *pp
) != NULL
; )
4387 struct elf_dyn_relocs
*q
;
4389 for (q
= edir
->dyn_relocs
; q
!= NULL
; q
= q
->next
)
4390 if (q
->sec
== p
->sec
)
4392 q
->pc_count
+= p
->pc_count
;
4393 q
->count
+= p
->count
;
4400 *pp
= edir
->dyn_relocs
;
4403 edir
->dyn_relocs
= eind
->dyn_relocs
;
4404 eind
->dyn_relocs
= NULL
;
4407 /* Copy over got entries that we may have already seen to the
4408 symbol which just became indirect. */
4409 if (eind
->elf
.got
.glist
!= NULL
)
4411 if (edir
->elf
.got
.glist
!= NULL
)
4413 struct got_entry
**entp
;
4414 struct got_entry
*ent
;
4416 for (entp
= &eind
->elf
.got
.glist
; (ent
= *entp
) != NULL
; )
4418 struct got_entry
*dent
;
4420 for (dent
= edir
->elf
.got
.glist
; dent
!= NULL
; dent
= dent
->next
)
4421 if (dent
->addend
== ent
->addend
4422 && dent
->owner
== ent
->owner
4423 && dent
->tls_type
== ent
->tls_type
)
4425 dent
->got
.refcount
+= ent
->got
.refcount
;
4432 *entp
= edir
->elf
.got
.glist
;
4435 edir
->elf
.got
.glist
= eind
->elf
.got
.glist
;
4436 eind
->elf
.got
.glist
= NULL
;
4439 /* And plt entries. */
4440 move_plt_plist (eind
, edir
);
4442 if (eind
->elf
.dynindx
!= -1)
4444 if (edir
->elf
.dynindx
!= -1)
4445 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
4446 edir
->elf
.dynstr_index
);
4447 edir
->elf
.dynindx
= eind
->elf
.dynindx
;
4448 edir
->elf
.dynstr_index
= eind
->elf
.dynstr_index
;
4449 eind
->elf
.dynindx
= -1;
4450 eind
->elf
.dynstr_index
= 0;
4454 /* Find the function descriptor hash entry from the given function code
4455 hash entry FH. Link the entries via their OH fields. */
4457 static struct ppc_link_hash_entry
*
4458 lookup_fdh (struct ppc_link_hash_entry
*fh
, struct ppc_link_hash_table
*htab
)
4460 struct ppc_link_hash_entry
*fdh
= fh
->oh
;
4464 const char *fd_name
= fh
->elf
.root
.root
.string
+ 1;
4466 fdh
= (struct ppc_link_hash_entry
*)
4467 elf_link_hash_lookup (&htab
->elf
, fd_name
, FALSE
, FALSE
, FALSE
);
4471 fdh
->is_func_descriptor
= 1;
4477 return ppc_follow_link (fdh
);
4480 /* Make a fake function descriptor sym for the code sym FH. */
4482 static struct ppc_link_hash_entry
*
4483 make_fdh (struct bfd_link_info
*info
,
4484 struct ppc_link_hash_entry
*fh
)
4488 struct bfd_link_hash_entry
*bh
;
4489 struct ppc_link_hash_entry
*fdh
;
4491 abfd
= fh
->elf
.root
.u
.undef
.abfd
;
4492 newsym
= bfd_make_empty_symbol (abfd
);
4493 newsym
->name
= fh
->elf
.root
.root
.string
+ 1;
4494 newsym
->section
= bfd_und_section_ptr
;
4496 newsym
->flags
= BSF_WEAK
;
4499 if (!_bfd_generic_link_add_one_symbol (info
, abfd
, newsym
->name
,
4500 newsym
->flags
, newsym
->section
,
4501 newsym
->value
, NULL
, FALSE
, FALSE
,
4505 fdh
= (struct ppc_link_hash_entry
*) bh
;
4506 fdh
->elf
.non_elf
= 0;
4508 fdh
->is_func_descriptor
= 1;
4515 /* Fix function descriptor symbols defined in .opd sections to be
4519 ppc64_elf_add_symbol_hook (bfd
*ibfd
,
4520 struct bfd_link_info
*info
,
4521 Elf_Internal_Sym
*isym
,
4522 const char **name ATTRIBUTE_UNUSED
,
4523 flagword
*flags ATTRIBUTE_UNUSED
,
4525 bfd_vma
*value ATTRIBUTE_UNUSED
)
4527 if ((ibfd
->flags
& DYNAMIC
) == 0
4528 && ELF_ST_BIND (isym
->st_info
) == STB_GNU_UNIQUE
)
4529 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4531 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4533 if ((ibfd
->flags
& DYNAMIC
) == 0)
4534 elf_tdata (info
->output_bfd
)->has_gnu_symbols
= TRUE
;
4536 else if (ELF_ST_TYPE (isym
->st_info
) == STT_FUNC
)
4538 else if (*sec
!= NULL
4539 && strcmp ((*sec
)->name
, ".opd") == 0)
4540 isym
->st_info
= ELF_ST_INFO (ELF_ST_BIND (isym
->st_info
), STT_FUNC
);
4545 /* This function makes an old ABI object reference to ".bar" cause the
4546 inclusion of a new ABI object archive that defines "bar".
4547 NAME is a symbol defined in an archive. Return a symbol in the hash
4548 table that might be satisfied by the archive symbols. */
4550 static struct elf_link_hash_entry
*
4551 ppc64_elf_archive_symbol_lookup (bfd
*abfd
,
4552 struct bfd_link_info
*info
,
4555 struct elf_link_hash_entry
*h
;
4559 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, name
);
4561 /* Don't return this sym if it is a fake function descriptor
4562 created by add_symbol_adjust. */
4563 && !(h
->root
.type
== bfd_link_hash_undefweak
4564 && ((struct ppc_link_hash_entry
*) h
)->fake
))
4570 len
= strlen (name
);
4571 dot_name
= bfd_alloc (abfd
, len
+ 2);
4572 if (dot_name
== NULL
)
4573 return (struct elf_link_hash_entry
*) 0 - 1;
4575 memcpy (dot_name
+ 1, name
, len
+ 1);
4576 h
= _bfd_elf_archive_symbol_lookup (abfd
, info
, dot_name
);
4577 bfd_release (abfd
, dot_name
);
4581 /* This function satisfies all old ABI object references to ".bar" if a
4582 new ABI object defines "bar". Well, at least, undefined dot symbols
4583 are made weak. This stops later archive searches from including an
4584 object if we already have a function descriptor definition. It also
4585 prevents the linker complaining about undefined symbols.
4586 We also check and correct mismatched symbol visibility here. The
4587 most restrictive visibility of the function descriptor and the
4588 function entry symbol is used. */
4591 add_symbol_adjust (struct ppc_link_hash_entry
*eh
, struct bfd_link_info
*info
)
4593 struct ppc_link_hash_table
*htab
;
4594 struct ppc_link_hash_entry
*fdh
;
4596 if (eh
->elf
.root
.type
== bfd_link_hash_indirect
)
4599 if (eh
->elf
.root
.type
== bfd_link_hash_warning
)
4600 eh
= (struct ppc_link_hash_entry
*) eh
->elf
.root
.u
.i
.link
;
4602 if (eh
->elf
.root
.root
.string
[0] != '.')
4605 htab
= ppc_hash_table (info
);
4609 fdh
= lookup_fdh (eh
, htab
);
4612 if (!info
->relocatable
4613 && (eh
->elf
.root
.type
== bfd_link_hash_undefined
4614 || eh
->elf
.root
.type
== bfd_link_hash_undefweak
)
4615 && eh
->elf
.ref_regular
)
4617 /* Make an undefweak function descriptor sym, which is enough to
4618 pull in an --as-needed shared lib, but won't cause link
4619 errors. Archives are handled elsewhere. */
4620 fdh
= make_fdh (info
, eh
);
4623 fdh
->elf
.ref_regular
= 1;
4628 unsigned entry_vis
= ELF_ST_VISIBILITY (eh
->elf
.other
) - 1;
4629 unsigned descr_vis
= ELF_ST_VISIBILITY (fdh
->elf
.other
) - 1;
4630 if (entry_vis
< descr_vis
)
4631 fdh
->elf
.other
+= entry_vis
- descr_vis
;
4632 else if (entry_vis
> descr_vis
)
4633 eh
->elf
.other
+= descr_vis
- entry_vis
;
4635 if ((fdh
->elf
.root
.type
== bfd_link_hash_defined
4636 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
4637 && eh
->elf
.root
.type
== bfd_link_hash_undefined
)
4639 eh
->elf
.root
.type
= bfd_link_hash_undefweak
;
4640 eh
->was_undefined
= 1;
4641 htab
->twiddled_syms
= 1;
4648 /* Process list of dot-symbols we made in link_hash_newfunc. */
4651 ppc64_elf_process_dot_syms (bfd
*ibfd
, struct bfd_link_info
*info
)
4653 struct ppc_link_hash_table
*htab
;
4654 struct ppc_link_hash_entry
**p
, *eh
;
4656 if (!is_ppc64_elf (info
->output_bfd
))
4658 htab
= ppc_hash_table (info
);
4662 if (is_ppc64_elf (ibfd
))
4664 p
= &htab
->dot_syms
;
4665 while ((eh
= *p
) != NULL
)
4668 if (!add_symbol_adjust (eh
, info
))
4670 p
= &eh
->u
.next_dot_sym
;
4674 /* Clear the list for non-ppc64 input files. */
4675 p
= &htab
->dot_syms
;
4676 while ((eh
= *p
) != NULL
)
4679 p
= &eh
->u
.next_dot_sym
;
4682 /* We need to fix the undefs list for any syms we have twiddled to
4684 if (htab
->twiddled_syms
)
4686 bfd_link_repair_undef_list (&htab
->elf
.root
);
4687 htab
->twiddled_syms
= 0;
4692 /* Undo hash table changes when an --as-needed input file is determined
4693 not to be needed. */
4696 ppc64_elf_as_needed_cleanup (bfd
*ibfd ATTRIBUTE_UNUSED
,
4697 struct bfd_link_info
*info
)
4699 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
4704 htab
->dot_syms
= NULL
;
4708 /* If --just-symbols against a final linked binary, then assume we need
4709 toc adjusting stubs when calling functions defined there. */
4712 ppc64_elf_link_just_syms (asection
*sec
, struct bfd_link_info
*info
)
4714 if ((sec
->flags
& SEC_CODE
) != 0
4715 && (sec
->owner
->flags
& (EXEC_P
| DYNAMIC
)) != 0
4716 && is_ppc64_elf (sec
->owner
))
4718 asection
*got
= bfd_get_section_by_name (sec
->owner
, ".got");
4720 && got
->size
>= elf_backend_got_header_size
4721 && bfd_get_section_by_name (sec
->owner
, ".opd") != NULL
)
4722 sec
->has_toc_reloc
= 1;
4724 _bfd_elf_link_just_syms (sec
, info
);
4727 static struct plt_entry
**
4728 update_local_sym_info (bfd
*abfd
, Elf_Internal_Shdr
*symtab_hdr
,
4729 unsigned long r_symndx
, bfd_vma r_addend
, int tls_type
)
4731 struct got_entry
**local_got_ents
= elf_local_got_ents (abfd
);
4732 struct plt_entry
**local_plt
;
4733 unsigned char *local_got_tls_masks
;
4735 if (local_got_ents
== NULL
)
4737 bfd_size_type size
= symtab_hdr
->sh_info
;
4739 size
*= (sizeof (*local_got_ents
)
4740 + sizeof (*local_plt
)
4741 + sizeof (*local_got_tls_masks
));
4742 local_got_ents
= bfd_zalloc (abfd
, size
);
4743 if (local_got_ents
== NULL
)
4745 elf_local_got_ents (abfd
) = local_got_ents
;
4748 if ((tls_type
& (PLT_IFUNC
| TLS_EXPLICIT
)) == 0)
4750 struct got_entry
*ent
;
4752 for (ent
= local_got_ents
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
4753 if (ent
->addend
== r_addend
4754 && ent
->owner
== abfd
4755 && ent
->tls_type
== tls_type
)
4759 bfd_size_type amt
= sizeof (*ent
);
4760 ent
= bfd_alloc (abfd
, amt
);
4763 ent
->next
= local_got_ents
[r_symndx
];
4764 ent
->addend
= r_addend
;
4766 ent
->tls_type
= tls_type
;
4767 ent
->is_indirect
= FALSE
;
4768 ent
->got
.refcount
= 0;
4769 local_got_ents
[r_symndx
] = ent
;
4771 ent
->got
.refcount
+= 1;
4774 local_plt
= (struct plt_entry
**) (local_got_ents
+ symtab_hdr
->sh_info
);
4775 local_got_tls_masks
= (unsigned char *) (local_plt
+ symtab_hdr
->sh_info
);
4776 local_got_tls_masks
[r_symndx
] |= tls_type
;
4778 return local_plt
+ r_symndx
;
4782 update_plt_info (bfd
*abfd
, struct plt_entry
**plist
, bfd_vma addend
)
4784 struct plt_entry
*ent
;
4786 for (ent
= *plist
; ent
!= NULL
; ent
= ent
->next
)
4787 if (ent
->addend
== addend
)
4791 bfd_size_type amt
= sizeof (*ent
);
4792 ent
= bfd_alloc (abfd
, amt
);
4796 ent
->addend
= addend
;
4797 ent
->plt
.refcount
= 0;
4800 ent
->plt
.refcount
+= 1;
4805 is_branch_reloc (enum elf_ppc64_reloc_type r_type
)
4807 return (r_type
== R_PPC64_REL24
4808 || r_type
== R_PPC64_REL14
4809 || r_type
== R_PPC64_REL14_BRTAKEN
4810 || r_type
== R_PPC64_REL14_BRNTAKEN
4811 || r_type
== R_PPC64_ADDR24
4812 || r_type
== R_PPC64_ADDR14
4813 || r_type
== R_PPC64_ADDR14_BRTAKEN
4814 || r_type
== R_PPC64_ADDR14_BRNTAKEN
);
4817 /* Look through the relocs for a section during the first phase, and
4818 calculate needed space in the global offset table, procedure
4819 linkage table, and dynamic reloc sections. */
4822 ppc64_elf_check_relocs (bfd
*abfd
, struct bfd_link_info
*info
,
4823 asection
*sec
, const Elf_Internal_Rela
*relocs
)
4825 struct ppc_link_hash_table
*htab
;
4826 Elf_Internal_Shdr
*symtab_hdr
;
4827 struct elf_link_hash_entry
**sym_hashes
;
4828 const Elf_Internal_Rela
*rel
;
4829 const Elf_Internal_Rela
*rel_end
;
4831 asection
**opd_sym_map
;
4832 struct elf_link_hash_entry
*tga
, *dottga
;
4834 if (info
->relocatable
)
4837 /* Don't do anything special with non-loaded, non-alloced sections.
4838 In particular, any relocs in such sections should not affect GOT
4839 and PLT reference counting (ie. we don't allow them to create GOT
4840 or PLT entries), there's no possibility or desire to optimize TLS
4841 relocs, and there's not much point in propagating relocs to shared
4842 libs that the dynamic linker won't relocate. */
4843 if ((sec
->flags
& SEC_ALLOC
) == 0)
4846 BFD_ASSERT (is_ppc64_elf (abfd
));
4848 htab
= ppc_hash_table (info
);
4852 tga
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
4853 FALSE
, FALSE
, TRUE
);
4854 dottga
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
4855 FALSE
, FALSE
, TRUE
);
4856 symtab_hdr
= &elf_symtab_hdr (abfd
);
4857 sym_hashes
= elf_sym_hashes (abfd
);
4860 if (strcmp (sec
->name
, ".opd") == 0)
4862 /* Garbage collection needs some extra help with .opd sections.
4863 We don't want to necessarily keep everything referenced by
4864 relocs in .opd, as that would keep all functions. Instead,
4865 if we reference an .opd symbol (a function descriptor), we
4866 want to keep the function code symbol's section. This is
4867 easy for global symbols, but for local syms we need to keep
4868 information about the associated function section. */
4871 amt
= sec
->size
* sizeof (*opd_sym_map
) / 8;
4872 opd_sym_map
= bfd_zalloc (abfd
, amt
);
4873 if (opd_sym_map
== NULL
)
4875 ppc64_elf_section_data (sec
)->u
.opd
.func_sec
= opd_sym_map
;
4876 BFD_ASSERT (ppc64_elf_section_data (sec
)->sec_type
== sec_normal
);
4877 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
4880 if (htab
->sfpr
== NULL
4881 && !create_linkage_sections (htab
->elf
.dynobj
, info
))
4884 rel_end
= relocs
+ sec
->reloc_count
;
4885 for (rel
= relocs
; rel
< rel_end
; rel
++)
4887 unsigned long r_symndx
;
4888 struct elf_link_hash_entry
*h
;
4889 enum elf_ppc64_reloc_type r_type
;
4891 struct _ppc64_elf_section_data
*ppc64_sec
;
4892 struct plt_entry
**ifunc
;
4894 r_symndx
= ELF64_R_SYM (rel
->r_info
);
4895 if (r_symndx
< symtab_hdr
->sh_info
)
4899 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
4900 h
= elf_follow_link (h
);
4907 if (h
->type
== STT_GNU_IFUNC
)
4910 ifunc
= &h
->plt
.plist
;
4915 Elf_Internal_Sym
*isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
4920 if (ELF_ST_TYPE (isym
->st_info
) == STT_GNU_IFUNC
)
4922 ifunc
= update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
4923 rel
->r_addend
, PLT_IFUNC
);
4928 r_type
= ELF64_R_TYPE (rel
->r_info
);
4929 if (is_branch_reloc (r_type
))
4931 if (h
!= NULL
&& (h
== tga
|| h
== dottga
))
4934 && (ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSGD
4935 || ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_TLSLD
))
4936 /* We have a new-style __tls_get_addr call with a marker
4940 /* Mark this section as having an old-style call. */
4941 sec
->has_tls_get_addr_call
= 1;
4944 /* STT_GNU_IFUNC symbols must have a PLT entry. */
4946 && !update_plt_info (abfd
, ifunc
, rel
->r_addend
))
4954 /* These special tls relocs tie a call to __tls_get_addr with
4955 its parameter symbol. */
4958 case R_PPC64_GOT_TLSLD16
:
4959 case R_PPC64_GOT_TLSLD16_LO
:
4960 case R_PPC64_GOT_TLSLD16_HI
:
4961 case R_PPC64_GOT_TLSLD16_HA
:
4962 tls_type
= TLS_TLS
| TLS_LD
;
4965 case R_PPC64_GOT_TLSGD16
:
4966 case R_PPC64_GOT_TLSGD16_LO
:
4967 case R_PPC64_GOT_TLSGD16_HI
:
4968 case R_PPC64_GOT_TLSGD16_HA
:
4969 tls_type
= TLS_TLS
| TLS_GD
;
4972 case R_PPC64_GOT_TPREL16_DS
:
4973 case R_PPC64_GOT_TPREL16_LO_DS
:
4974 case R_PPC64_GOT_TPREL16_HI
:
4975 case R_PPC64_GOT_TPREL16_HA
:
4976 if (!info
->executable
)
4977 info
->flags
|= DF_STATIC_TLS
;
4978 tls_type
= TLS_TLS
| TLS_TPREL
;
4981 case R_PPC64_GOT_DTPREL16_DS
:
4982 case R_PPC64_GOT_DTPREL16_LO_DS
:
4983 case R_PPC64_GOT_DTPREL16_HI
:
4984 case R_PPC64_GOT_DTPREL16_HA
:
4985 tls_type
= TLS_TLS
| TLS_DTPREL
;
4987 sec
->has_tls_reloc
= 1;
4991 case R_PPC64_GOT16_DS
:
4992 case R_PPC64_GOT16_HA
:
4993 case R_PPC64_GOT16_HI
:
4994 case R_PPC64_GOT16_LO
:
4995 case R_PPC64_GOT16_LO_DS
:
4996 /* This symbol requires a global offset table entry. */
4997 sec
->has_toc_reloc
= 1;
4998 if (r_type
== R_PPC64_GOT_TLSLD16
4999 || r_type
== R_PPC64_GOT_TLSGD16
5000 || r_type
== R_PPC64_GOT_TPREL16_DS
5001 || r_type
== R_PPC64_GOT_DTPREL16_DS
5002 || r_type
== R_PPC64_GOT16
5003 || r_type
== R_PPC64_GOT16_DS
)
5005 htab
->do_multi_toc
= 1;
5006 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5009 if (ppc64_elf_tdata (abfd
)->got
== NULL
5010 && !create_got_section (abfd
, info
))
5015 struct ppc_link_hash_entry
*eh
;
5016 struct got_entry
*ent
;
5018 eh
= (struct ppc_link_hash_entry
*) h
;
5019 for (ent
= eh
->elf
.got
.glist
; ent
!= NULL
; ent
= ent
->next
)
5020 if (ent
->addend
== rel
->r_addend
5021 && ent
->owner
== abfd
5022 && ent
->tls_type
== tls_type
)
5026 bfd_size_type amt
= sizeof (*ent
);
5027 ent
= bfd_alloc (abfd
, amt
);
5030 ent
->next
= eh
->elf
.got
.glist
;
5031 ent
->addend
= rel
->r_addend
;
5033 ent
->tls_type
= tls_type
;
5034 ent
->is_indirect
= FALSE
;
5035 ent
->got
.refcount
= 0;
5036 eh
->elf
.got
.glist
= ent
;
5038 ent
->got
.refcount
+= 1;
5039 eh
->tls_mask
|= tls_type
;
5042 /* This is a global offset table entry for a local symbol. */
5043 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5044 rel
->r_addend
, tls_type
))
5048 case R_PPC64_PLT16_HA
:
5049 case R_PPC64_PLT16_HI
:
5050 case R_PPC64_PLT16_LO
:
5053 /* This symbol requires a procedure linkage table entry. We
5054 actually build the entry in adjust_dynamic_symbol,
5055 because this might be a case of linking PIC code without
5056 linking in any dynamic objects, in which case we don't
5057 need to generate a procedure linkage table after all. */
5060 /* It does not make sense to have a procedure linkage
5061 table entry for a local symbol. */
5062 bfd_set_error (bfd_error_bad_value
);
5067 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5070 if (h
->root
.root
.string
[0] == '.'
5071 && h
->root
.root
.string
[1] != '\0')
5072 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5076 /* The following relocations don't need to propagate the
5077 relocation if linking a shared object since they are
5078 section relative. */
5079 case R_PPC64_SECTOFF
:
5080 case R_PPC64_SECTOFF_LO
:
5081 case R_PPC64_SECTOFF_HI
:
5082 case R_PPC64_SECTOFF_HA
:
5083 case R_PPC64_SECTOFF_DS
:
5084 case R_PPC64_SECTOFF_LO_DS
:
5085 case R_PPC64_DTPREL16
:
5086 case R_PPC64_DTPREL16_LO
:
5087 case R_PPC64_DTPREL16_HI
:
5088 case R_PPC64_DTPREL16_HA
:
5089 case R_PPC64_DTPREL16_DS
:
5090 case R_PPC64_DTPREL16_LO_DS
:
5091 case R_PPC64_DTPREL16_HIGHER
:
5092 case R_PPC64_DTPREL16_HIGHERA
:
5093 case R_PPC64_DTPREL16_HIGHEST
:
5094 case R_PPC64_DTPREL16_HIGHESTA
:
5099 case R_PPC64_REL16_LO
:
5100 case R_PPC64_REL16_HI
:
5101 case R_PPC64_REL16_HA
:
5105 case R_PPC64_TOC16_DS
:
5106 htab
->do_multi_toc
= 1;
5107 ppc64_elf_tdata (abfd
)->has_small_toc_reloc
= 1;
5108 case R_PPC64_TOC16_LO
:
5109 case R_PPC64_TOC16_HI
:
5110 case R_PPC64_TOC16_HA
:
5111 case R_PPC64_TOC16_LO_DS
:
5112 sec
->has_toc_reloc
= 1;
5115 /* This relocation describes the C++ object vtable hierarchy.
5116 Reconstruct it for later use during GC. */
5117 case R_PPC64_GNU_VTINHERIT
:
5118 if (!bfd_elf_gc_record_vtinherit (abfd
, sec
, h
, rel
->r_offset
))
5122 /* This relocation describes which C++ vtable entries are actually
5123 used. Record for later use during GC. */
5124 case R_PPC64_GNU_VTENTRY
:
5125 BFD_ASSERT (h
!= NULL
);
5127 && !bfd_elf_gc_record_vtentry (abfd
, sec
, h
, rel
->r_addend
))
5132 case R_PPC64_REL14_BRTAKEN
:
5133 case R_PPC64_REL14_BRNTAKEN
:
5135 asection
*dest
= NULL
;
5137 /* Heuristic: If jumping outside our section, chances are
5138 we are going to need a stub. */
5141 /* If the sym is weak it may be overridden later, so
5142 don't assume we know where a weak sym lives. */
5143 if (h
->root
.type
== bfd_link_hash_defined
)
5144 dest
= h
->root
.u
.def
.section
;
5148 Elf_Internal_Sym
*isym
;
5150 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5155 dest
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5159 ppc64_elf_section_data (sec
)->has_14bit_branch
= 1;
5164 if (h
!= NULL
&& ifunc
== NULL
)
5166 /* We may need a .plt entry if the function this reloc
5167 refers to is in a shared lib. */
5168 if (!update_plt_info (abfd
, &h
->plt
.plist
, rel
->r_addend
))
5171 if (h
->root
.root
.string
[0] == '.'
5172 && h
->root
.root
.string
[1] != '\0')
5173 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5174 if (h
== tga
|| h
== dottga
)
5175 sec
->has_tls_reloc
= 1;
5179 case R_PPC64_TPREL64
:
5180 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_TPREL
;
5181 if (!info
->executable
)
5182 info
->flags
|= DF_STATIC_TLS
;
5185 case R_PPC64_DTPMOD64
:
5186 if (rel
+ 1 < rel_end
5187 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
5188 && rel
[1].r_offset
== rel
->r_offset
+ 8)
5189 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_GD
;
5191 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_LD
;
5194 case R_PPC64_DTPREL64
:
5195 tls_type
= TLS_EXPLICIT
| TLS_TLS
| TLS_DTPREL
;
5197 && rel
[-1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPMOD64
)
5198 && rel
[-1].r_offset
== rel
->r_offset
- 8)
5199 /* This is the second reloc of a dtpmod, dtprel pair.
5200 Don't mark with TLS_DTPREL. */
5204 sec
->has_tls_reloc
= 1;
5207 struct ppc_link_hash_entry
*eh
;
5208 eh
= (struct ppc_link_hash_entry
*) h
;
5209 eh
->tls_mask
|= tls_type
;
5212 if (!update_local_sym_info (abfd
, symtab_hdr
, r_symndx
,
5213 rel
->r_addend
, tls_type
))
5216 ppc64_sec
= ppc64_elf_section_data (sec
);
5217 if (ppc64_sec
->sec_type
!= sec_toc
)
5221 /* One extra to simplify get_tls_mask. */
5222 amt
= sec
->size
* sizeof (unsigned) / 8 + sizeof (unsigned);
5223 ppc64_sec
->u
.toc
.symndx
= bfd_zalloc (abfd
, amt
);
5224 if (ppc64_sec
->u
.toc
.symndx
== NULL
)
5226 amt
= sec
->size
* sizeof (bfd_vma
) / 8;
5227 ppc64_sec
->u
.toc
.add
= bfd_zalloc (abfd
, amt
);
5228 if (ppc64_sec
->u
.toc
.add
== NULL
)
5230 BFD_ASSERT (ppc64_sec
->sec_type
== sec_normal
);
5231 ppc64_sec
->sec_type
= sec_toc
;
5233 BFD_ASSERT (rel
->r_offset
% 8 == 0);
5234 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8] = r_symndx
;
5235 ppc64_sec
->u
.toc
.add
[rel
->r_offset
/ 8] = rel
->r_addend
;
5237 /* Mark the second slot of a GD or LD entry.
5238 -1 to indicate GD and -2 to indicate LD. */
5239 if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_GD
))
5240 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -1;
5241 else if (tls_type
== (TLS_EXPLICIT
| TLS_TLS
| TLS_LD
))
5242 ppc64_sec
->u
.toc
.symndx
[rel
->r_offset
/ 8 + 1] = -2;
5245 case R_PPC64_TPREL16
:
5246 case R_PPC64_TPREL16_LO
:
5247 case R_PPC64_TPREL16_HI
:
5248 case R_PPC64_TPREL16_HA
:
5249 case R_PPC64_TPREL16_DS
:
5250 case R_PPC64_TPREL16_LO_DS
:
5251 case R_PPC64_TPREL16_HIGHER
:
5252 case R_PPC64_TPREL16_HIGHERA
:
5253 case R_PPC64_TPREL16_HIGHEST
:
5254 case R_PPC64_TPREL16_HIGHESTA
:
5257 if (!info
->executable
)
5258 info
->flags
|= DF_STATIC_TLS
;
5263 case R_PPC64_ADDR64
:
5264 if (opd_sym_map
!= NULL
5265 && rel
+ 1 < rel_end
5266 && ELF64_R_TYPE ((rel
+ 1)->r_info
) == R_PPC64_TOC
)
5270 if (h
->root
.root
.string
[0] == '.'
5271 && h
->root
.root
.string
[1] != 0
5272 && lookup_fdh ((struct ppc_link_hash_entry
*) h
, htab
))
5275 ((struct ppc_link_hash_entry
*) h
)->is_func
= 1;
5280 Elf_Internal_Sym
*isym
;
5282 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5287 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5288 if (s
!= NULL
&& s
!= sec
)
5289 opd_sym_map
[rel
->r_offset
/ 8] = s
;
5297 case R_PPC64_ADDR14
:
5298 case R_PPC64_ADDR14_BRNTAKEN
:
5299 case R_PPC64_ADDR14_BRTAKEN
:
5300 case R_PPC64_ADDR16
:
5301 case R_PPC64_ADDR16_DS
:
5302 case R_PPC64_ADDR16_HA
:
5303 case R_PPC64_ADDR16_HI
:
5304 case R_PPC64_ADDR16_HIGHER
:
5305 case R_PPC64_ADDR16_HIGHERA
:
5306 case R_PPC64_ADDR16_HIGHEST
:
5307 case R_PPC64_ADDR16_HIGHESTA
:
5308 case R_PPC64_ADDR16_LO
:
5309 case R_PPC64_ADDR16_LO_DS
:
5310 case R_PPC64_ADDR24
:
5311 case R_PPC64_ADDR32
:
5312 case R_PPC64_UADDR16
:
5313 case R_PPC64_UADDR32
:
5314 case R_PPC64_UADDR64
:
5316 if (h
!= NULL
&& !info
->shared
)
5317 /* We may need a copy reloc. */
5320 /* Don't propagate .opd relocs. */
5321 if (NO_OPD_RELOCS
&& opd_sym_map
!= NULL
)
5324 /* If we are creating a shared library, and this is a reloc
5325 against a global symbol, or a non PC relative reloc
5326 against a local symbol, then we need to copy the reloc
5327 into the shared library. However, if we are linking with
5328 -Bsymbolic, we do not need to copy a reloc against a
5329 global symbol which is defined in an object we are
5330 including in the link (i.e., DEF_REGULAR is set). At
5331 this point we have not seen all the input files, so it is
5332 possible that DEF_REGULAR is not set now but will be set
5333 later (it is never cleared). In case of a weak definition,
5334 DEF_REGULAR may be cleared later by a strong definition in
5335 a shared library. We account for that possibility below by
5336 storing information in the dyn_relocs field of the hash
5337 table entry. A similar situation occurs when creating
5338 shared libraries and symbol visibility changes render the
5341 If on the other hand, we are creating an executable, we
5342 may need to keep relocations for symbols satisfied by a
5343 dynamic library if we manage to avoid copy relocs for the
5347 && (must_be_dyn_reloc (info
, r_type
)
5349 && (! info
->symbolic
5350 || h
->root
.type
== bfd_link_hash_defweak
5351 || !h
->def_regular
))))
5352 || (ELIMINATE_COPY_RELOCS
5355 && (h
->root
.type
== bfd_link_hash_defweak
5356 || !h
->def_regular
))
5360 struct elf_dyn_relocs
*p
;
5361 struct elf_dyn_relocs
**head
;
5363 /* We must copy these reloc types into the output file.
5364 Create a reloc section in dynobj and make room for
5368 sreloc
= _bfd_elf_make_dynamic_reloc_section
5369 (sec
, htab
->elf
.dynobj
, 3, abfd
, /*rela?*/ TRUE
);
5375 /* If this is a global symbol, we count the number of
5376 relocations we need for this symbol. */
5379 head
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
5383 /* Track dynamic relocs needed for local syms too.
5384 We really need local syms available to do this
5388 Elf_Internal_Sym
*isym
;
5390 isym
= bfd_sym_from_r_symndx (&htab
->sym_cache
,
5395 s
= bfd_section_from_elf_index (abfd
, isym
->st_shndx
);
5399 vpp
= &elf_section_data (s
)->local_dynrel
;
5400 head
= (struct elf_dyn_relocs
**) vpp
;
5404 if (p
== NULL
|| p
->sec
!= sec
)
5406 p
= bfd_alloc (htab
->elf
.dynobj
, sizeof *p
);
5417 if (!must_be_dyn_reloc (info
, r_type
))
5430 /* OFFSET in OPD_SEC specifies a function descriptor. Return the address
5431 of the code entry point, and its section. */
5434 opd_entry_value (asection
*opd_sec
,
5436 asection
**code_sec
,
5439 bfd
*opd_bfd
= opd_sec
->owner
;
5440 Elf_Internal_Rela
*relocs
;
5441 Elf_Internal_Rela
*lo
, *hi
, *look
;
5444 /* No relocs implies we are linking a --just-symbols object. */
5445 if (opd_sec
->reloc_count
== 0)
5449 if (!bfd_get_section_contents (opd_bfd
, opd_sec
, buf
, offset
, 8))
5450 return (bfd_vma
) -1;
5452 val
= bfd_get_64 (opd_bfd
, buf
);
5453 if (code_sec
!= NULL
)
5455 asection
*sec
, *likely
= NULL
;
5456 for (sec
= opd_bfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
5458 && (sec
->flags
& SEC_LOAD
) != 0
5459 && (sec
->flags
& SEC_ALLOC
) != 0)
5464 if (code_off
!= NULL
)
5465 *code_off
= val
- likely
->vma
;
5471 BFD_ASSERT (is_ppc64_elf (opd_bfd
));
5473 relocs
= ppc64_elf_tdata (opd_bfd
)->opd_relocs
;
5475 relocs
= _bfd_elf_link_read_relocs (opd_bfd
, opd_sec
, NULL
, NULL
, TRUE
);
5477 /* Go find the opd reloc at the sym address. */
5479 BFD_ASSERT (lo
!= NULL
);
5480 hi
= lo
+ opd_sec
->reloc_count
- 1; /* ignore last reloc */
5484 look
= lo
+ (hi
- lo
) / 2;
5485 if (look
->r_offset
< offset
)
5487 else if (look
->r_offset
> offset
)
5491 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (opd_bfd
);
5493 if (ELF64_R_TYPE (look
->r_info
) == R_PPC64_ADDR64
5494 && ELF64_R_TYPE ((look
+ 1)->r_info
) == R_PPC64_TOC
)
5496 unsigned long symndx
= ELF64_R_SYM (look
->r_info
);
5499 if (symndx
< symtab_hdr
->sh_info
)
5501 Elf_Internal_Sym
*sym
;
5503 sym
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
5506 sym
= bfd_elf_get_elf_syms (opd_bfd
, symtab_hdr
,
5507 symtab_hdr
->sh_info
,
5508 0, NULL
, NULL
, NULL
);
5511 symtab_hdr
->contents
= (bfd_byte
*) sym
;
5515 val
= sym
->st_value
;
5516 sec
= bfd_section_from_elf_index (opd_bfd
, sym
->st_shndx
);
5517 BFD_ASSERT ((sec
->flags
& SEC_MERGE
) == 0);
5521 struct elf_link_hash_entry
**sym_hashes
;
5522 struct elf_link_hash_entry
*rh
;
5524 sym_hashes
= elf_sym_hashes (opd_bfd
);
5525 rh
= sym_hashes
[symndx
- symtab_hdr
->sh_info
];
5526 rh
= elf_follow_link (rh
);
5527 BFD_ASSERT (rh
->root
.type
== bfd_link_hash_defined
5528 || rh
->root
.type
== bfd_link_hash_defweak
);
5529 val
= rh
->root
.u
.def
.value
;
5530 sec
= rh
->root
.u
.def
.section
;
5532 val
+= look
->r_addend
;
5533 if (code_off
!= NULL
)
5535 if (code_sec
!= NULL
)
5537 if (sec
!= NULL
&& sec
->output_section
!= NULL
)
5538 val
+= sec
->output_section
->vma
+ sec
->output_offset
;
5547 /* Return true if symbol is defined in a regular object file. */
5550 is_static_defined (struct elf_link_hash_entry
*h
)
5552 return ((h
->root
.type
== bfd_link_hash_defined
5553 || h
->root
.type
== bfd_link_hash_defweak
)
5554 && h
->root
.u
.def
.section
!= NULL
5555 && h
->root
.u
.def
.section
->output_section
!= NULL
);
5558 /* If FDH is a function descriptor symbol, return the associated code
5559 entry symbol if it is defined. Return NULL otherwise. */
5561 static struct ppc_link_hash_entry
*
5562 defined_code_entry (struct ppc_link_hash_entry
*fdh
)
5564 if (fdh
->is_func_descriptor
)
5566 struct ppc_link_hash_entry
*fh
= ppc_follow_link (fdh
->oh
);
5567 if (fh
->elf
.root
.type
== bfd_link_hash_defined
5568 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
5574 /* If FH is a function code entry symbol, return the associated
5575 function descriptor symbol if it is defined. Return NULL otherwise. */
5577 static struct ppc_link_hash_entry
*
5578 defined_func_desc (struct ppc_link_hash_entry
*fh
)
5581 && fh
->oh
->is_func_descriptor
)
5583 struct ppc_link_hash_entry
*fdh
= ppc_follow_link (fh
->oh
);
5584 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
5585 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
5591 /* Mark all our entry sym sections, both opd and code section. */
5594 ppc64_elf_gc_keep (struct bfd_link_info
*info
)
5596 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5597 struct bfd_sym_chain
*sym
;
5602 for (sym
= info
->gc_sym_list
; sym
!= NULL
; sym
= sym
->next
)
5604 struct ppc_link_hash_entry
*eh
, *fh
;
5607 eh
= (struct ppc_link_hash_entry
*)
5608 elf_link_hash_lookup (&htab
->elf
, sym
->name
, FALSE
, FALSE
, TRUE
);
5611 if (eh
->elf
.root
.type
!= bfd_link_hash_defined
5612 && eh
->elf
.root
.type
!= bfd_link_hash_defweak
)
5615 fh
= defined_code_entry (eh
);
5618 sec
= fh
->elf
.root
.u
.def
.section
;
5619 sec
->flags
|= SEC_KEEP
;
5621 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5622 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5623 eh
->elf
.root
.u
.def
.value
,
5624 &sec
, NULL
) != (bfd_vma
) -1)
5625 sec
->flags
|= SEC_KEEP
;
5627 sec
= eh
->elf
.root
.u
.def
.section
;
5628 sec
->flags
|= SEC_KEEP
;
5632 /* Mark sections containing dynamically referenced symbols. When
5633 building shared libraries, we must assume that any visible symbol is
5637 ppc64_elf_gc_mark_dynamic_ref (struct elf_link_hash_entry
*h
, void *inf
)
5639 struct bfd_link_info
*info
= (struct bfd_link_info
*) inf
;
5640 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
5641 struct ppc_link_hash_entry
*fdh
;
5643 /* Dynamic linking info is on the func descriptor sym. */
5644 fdh
= defined_func_desc (eh
);
5648 if ((eh
->elf
.root
.type
== bfd_link_hash_defined
5649 || eh
->elf
.root
.type
== bfd_link_hash_defweak
)
5650 && (eh
->elf
.ref_dynamic
5651 || (!info
->executable
5652 && eh
->elf
.def_regular
5653 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_INTERNAL
5654 && ELF_ST_VISIBILITY (eh
->elf
.other
) != STV_HIDDEN
)))
5657 struct ppc_link_hash_entry
*fh
;
5659 eh
->elf
.root
.u
.def
.section
->flags
|= SEC_KEEP
;
5661 /* Function descriptor syms cause the associated
5662 function code sym section to be marked. */
5663 fh
= defined_code_entry (eh
);
5666 code_sec
= fh
->elf
.root
.u
.def
.section
;
5667 code_sec
->flags
|= SEC_KEEP
;
5669 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5670 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5671 eh
->elf
.root
.u
.def
.value
,
5672 &code_sec
, NULL
) != (bfd_vma
) -1)
5673 code_sec
->flags
|= SEC_KEEP
;
5679 /* Return the section that should be marked against GC for a given
5683 ppc64_elf_gc_mark_hook (asection
*sec
,
5684 struct bfd_link_info
*info
,
5685 Elf_Internal_Rela
*rel
,
5686 struct elf_link_hash_entry
*h
,
5687 Elf_Internal_Sym
*sym
)
5691 /* Syms return NULL if we're marking .opd, so we avoid marking all
5692 function sections, as all functions are referenced in .opd. */
5694 if (get_opd_info (sec
) != NULL
)
5699 enum elf_ppc64_reloc_type r_type
;
5700 struct ppc_link_hash_entry
*eh
, *fh
, *fdh
;
5702 r_type
= ELF64_R_TYPE (rel
->r_info
);
5705 case R_PPC64_GNU_VTINHERIT
:
5706 case R_PPC64_GNU_VTENTRY
:
5710 switch (h
->root
.type
)
5712 case bfd_link_hash_defined
:
5713 case bfd_link_hash_defweak
:
5714 eh
= (struct ppc_link_hash_entry
*) h
;
5715 fdh
= defined_func_desc (eh
);
5719 /* Function descriptor syms cause the associated
5720 function code sym section to be marked. */
5721 fh
= defined_code_entry (eh
);
5724 /* They also mark their opd section. */
5725 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5727 rsec
= fh
->elf
.root
.u
.def
.section
;
5729 else if (get_opd_info (eh
->elf
.root
.u
.def
.section
) != NULL
5730 && opd_entry_value (eh
->elf
.root
.u
.def
.section
,
5731 eh
->elf
.root
.u
.def
.value
,
5732 &rsec
, NULL
) != (bfd_vma
) -1)
5733 eh
->elf
.root
.u
.def
.section
->gc_mark
= 1;
5735 rsec
= h
->root
.u
.def
.section
;
5738 case bfd_link_hash_common
:
5739 rsec
= h
->root
.u
.c
.p
->section
;
5743 return _bfd_elf_gc_mark_hook (sec
, info
, rel
, h
, sym
);
5749 struct _opd_sec_data
*opd
;
5751 rsec
= bfd_section_from_elf_index (sec
->owner
, sym
->st_shndx
);
5752 opd
= get_opd_info (rsec
);
5753 if (opd
!= NULL
&& opd
->func_sec
!= NULL
)
5757 rsec
= opd
->func_sec
[(sym
->st_value
+ rel
->r_addend
) / 8];
5764 /* Update the .got, .plt. and dynamic reloc reference counts for the
5765 section being removed. */
5768 ppc64_elf_gc_sweep_hook (bfd
*abfd
, struct bfd_link_info
*info
,
5769 asection
*sec
, const Elf_Internal_Rela
*relocs
)
5771 struct ppc_link_hash_table
*htab
;
5772 Elf_Internal_Shdr
*symtab_hdr
;
5773 struct elf_link_hash_entry
**sym_hashes
;
5774 struct got_entry
**local_got_ents
;
5775 const Elf_Internal_Rela
*rel
, *relend
;
5777 if (info
->relocatable
)
5780 if ((sec
->flags
& SEC_ALLOC
) == 0)
5783 elf_section_data (sec
)->local_dynrel
= NULL
;
5785 htab
= ppc_hash_table (info
);
5789 symtab_hdr
= &elf_symtab_hdr (abfd
);
5790 sym_hashes
= elf_sym_hashes (abfd
);
5791 local_got_ents
= elf_local_got_ents (abfd
);
5793 relend
= relocs
+ sec
->reloc_count
;
5794 for (rel
= relocs
; rel
< relend
; rel
++)
5796 unsigned long r_symndx
;
5797 enum elf_ppc64_reloc_type r_type
;
5798 struct elf_link_hash_entry
*h
= NULL
;
5799 unsigned char tls_type
= 0;
5801 r_symndx
= ELF64_R_SYM (rel
->r_info
);
5802 r_type
= ELF64_R_TYPE (rel
->r_info
);
5803 if (r_symndx
>= symtab_hdr
->sh_info
)
5805 struct ppc_link_hash_entry
*eh
;
5806 struct elf_dyn_relocs
**pp
;
5807 struct elf_dyn_relocs
*p
;
5809 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
5810 h
= elf_follow_link (h
);
5811 eh
= (struct ppc_link_hash_entry
*) h
;
5813 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; pp
= &p
->next
)
5816 /* Everything must go for SEC. */
5822 if (is_branch_reloc (r_type
))
5824 struct plt_entry
**ifunc
= NULL
;
5827 if (h
->type
== STT_GNU_IFUNC
)
5828 ifunc
= &h
->plt
.plist
;
5830 else if (local_got_ents
!= NULL
)
5832 struct plt_entry
**local_plt
= (struct plt_entry
**)
5833 (local_got_ents
+ symtab_hdr
->sh_info
);
5834 unsigned char *local_got_tls_masks
= (unsigned char *)
5835 (local_plt
+ symtab_hdr
->sh_info
);
5836 if ((local_got_tls_masks
[r_symndx
] & PLT_IFUNC
) != 0)
5837 ifunc
= local_plt
+ r_symndx
;
5841 struct plt_entry
*ent
;
5843 for (ent
= *ifunc
; ent
!= NULL
; ent
= ent
->next
)
5844 if (ent
->addend
== rel
->r_addend
)
5848 if (ent
->plt
.refcount
> 0)
5849 ent
->plt
.refcount
-= 1;
5856 case R_PPC64_GOT_TLSLD16
:
5857 case R_PPC64_GOT_TLSLD16_LO
:
5858 case R_PPC64_GOT_TLSLD16_HI
:
5859 case R_PPC64_GOT_TLSLD16_HA
:
5860 tls_type
= TLS_TLS
| TLS_LD
;
5863 case R_PPC64_GOT_TLSGD16
:
5864 case R_PPC64_GOT_TLSGD16_LO
:
5865 case R_PPC64_GOT_TLSGD16_HI
:
5866 case R_PPC64_GOT_TLSGD16_HA
:
5867 tls_type
= TLS_TLS
| TLS_GD
;
5870 case R_PPC64_GOT_TPREL16_DS
:
5871 case R_PPC64_GOT_TPREL16_LO_DS
:
5872 case R_PPC64_GOT_TPREL16_HI
:
5873 case R_PPC64_GOT_TPREL16_HA
:
5874 tls_type
= TLS_TLS
| TLS_TPREL
;
5877 case R_PPC64_GOT_DTPREL16_DS
:
5878 case R_PPC64_GOT_DTPREL16_LO_DS
:
5879 case R_PPC64_GOT_DTPREL16_HI
:
5880 case R_PPC64_GOT_DTPREL16_HA
:
5881 tls_type
= TLS_TLS
| TLS_DTPREL
;
5885 case R_PPC64_GOT16_DS
:
5886 case R_PPC64_GOT16_HA
:
5887 case R_PPC64_GOT16_HI
:
5888 case R_PPC64_GOT16_LO
:
5889 case R_PPC64_GOT16_LO_DS
:
5892 struct got_entry
*ent
;
5897 ent
= local_got_ents
[r_symndx
];
5899 for (; ent
!= NULL
; ent
= ent
->next
)
5900 if (ent
->addend
== rel
->r_addend
5901 && ent
->owner
== abfd
5902 && ent
->tls_type
== tls_type
)
5906 if (ent
->got
.refcount
> 0)
5907 ent
->got
.refcount
-= 1;
5911 case R_PPC64_PLT16_HA
:
5912 case R_PPC64_PLT16_HI
:
5913 case R_PPC64_PLT16_LO
:
5917 case R_PPC64_REL14_BRNTAKEN
:
5918 case R_PPC64_REL14_BRTAKEN
:
5922 struct plt_entry
*ent
;
5924 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
5925 if (ent
->addend
== rel
->r_addend
)
5927 if (ent
!= NULL
&& ent
->plt
.refcount
> 0)
5928 ent
->plt
.refcount
-= 1;
5939 /* The maximum size of .sfpr. */
5940 #define SFPR_MAX (218*4)
5942 struct sfpr_def_parms
5944 const char name
[12];
5945 unsigned char lo
, hi
;
5946 bfd_byte
* (*write_ent
) (bfd
*, bfd_byte
*, int);
5947 bfd_byte
* (*write_tail
) (bfd
*, bfd_byte
*, int);
5950 /* Auto-generate _save*, _rest* functions in .sfpr. */
5953 sfpr_define (struct bfd_link_info
*info
, const struct sfpr_def_parms
*parm
)
5955 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
5957 size_t len
= strlen (parm
->name
);
5958 bfd_boolean writing
= FALSE
;
5964 memcpy (sym
, parm
->name
, len
);
5967 for (i
= parm
->lo
; i
<= parm
->hi
; i
++)
5969 struct elf_link_hash_entry
*h
;
5971 sym
[len
+ 0] = i
/ 10 + '0';
5972 sym
[len
+ 1] = i
% 10 + '0';
5973 h
= elf_link_hash_lookup (&htab
->elf
, sym
, FALSE
, FALSE
, TRUE
);
5977 h
->root
.type
= bfd_link_hash_defined
;
5978 h
->root
.u
.def
.section
= htab
->sfpr
;
5979 h
->root
.u
.def
.value
= htab
->sfpr
->size
;
5982 _bfd_elf_link_hash_hide_symbol (info
, h
, TRUE
);
5984 if (htab
->sfpr
->contents
== NULL
)
5986 htab
->sfpr
->contents
= bfd_alloc (htab
->elf
.dynobj
, SFPR_MAX
);
5987 if (htab
->sfpr
->contents
== NULL
)
5993 bfd_byte
*p
= htab
->sfpr
->contents
+ htab
->sfpr
->size
;
5995 p
= (*parm
->write_ent
) (htab
->elf
.dynobj
, p
, i
);
5997 p
= (*parm
->write_tail
) (htab
->elf
.dynobj
, p
, i
);
5998 htab
->sfpr
->size
= p
- htab
->sfpr
->contents
;
6006 savegpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6008 bfd_put_32 (abfd
, STD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6013 savegpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6015 p
= savegpr0 (abfd
, p
, r
);
6016 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6018 bfd_put_32 (abfd
, BLR
, p
);
6023 restgpr0 (bfd
*abfd
, bfd_byte
*p
, int r
)
6025 bfd_put_32 (abfd
, LD_R0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6030 restgpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6032 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6034 p
= restgpr0 (abfd
, p
, r
);
6035 bfd_put_32 (abfd
, MTLR_R0
, p
);
6039 p
= restgpr0 (abfd
, p
, 30);
6040 p
= restgpr0 (abfd
, p
, 31);
6042 bfd_put_32 (abfd
, BLR
, p
);
6047 savegpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6049 bfd_put_32 (abfd
, STD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6054 savegpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6056 p
= savegpr1 (abfd
, p
, r
);
6057 bfd_put_32 (abfd
, BLR
, p
);
6062 restgpr1 (bfd
*abfd
, bfd_byte
*p
, int r
)
6064 bfd_put_32 (abfd
, LD_R0_0R12
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6069 restgpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6071 p
= restgpr1 (abfd
, p
, r
);
6072 bfd_put_32 (abfd
, BLR
, p
);
6077 savefpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6079 bfd_put_32 (abfd
, STFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6084 savefpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6086 p
= savefpr (abfd
, p
, r
);
6087 bfd_put_32 (abfd
, STD_R0_0R1
+ 16, p
);
6089 bfd_put_32 (abfd
, BLR
, p
);
6094 restfpr (bfd
*abfd
, bfd_byte
*p
, int r
)
6096 bfd_put_32 (abfd
, LFD_FR0_0R1
+ (r
<< 21) + (1 << 16) - (32 - r
) * 8, p
);
6101 restfpr0_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6103 bfd_put_32 (abfd
, LD_R0_0R1
+ 16, p
);
6105 p
= restfpr (abfd
, p
, r
);
6106 bfd_put_32 (abfd
, MTLR_R0
, p
);
6110 p
= restfpr (abfd
, p
, 30);
6111 p
= restfpr (abfd
, p
, 31);
6113 bfd_put_32 (abfd
, BLR
, p
);
6118 savefpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6120 p
= savefpr (abfd
, p
, r
);
6121 bfd_put_32 (abfd
, BLR
, p
);
6126 restfpr1_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6128 p
= restfpr (abfd
, p
, r
);
6129 bfd_put_32 (abfd
, BLR
, p
);
6134 savevr (bfd
*abfd
, bfd_byte
*p
, int r
)
6136 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6138 bfd_put_32 (abfd
, STVX_VR0_R12_R0
+ (r
<< 21), p
);
6143 savevr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6145 p
= savevr (abfd
, p
, r
);
6146 bfd_put_32 (abfd
, BLR
, p
);
6151 restvr (bfd
*abfd
, bfd_byte
*p
, int r
)
6153 bfd_put_32 (abfd
, LI_R12_0
+ (1 << 16) - (32 - r
) * 16, p
);
6155 bfd_put_32 (abfd
, LVX_VR0_R12_R0
+ (r
<< 21), p
);
6160 restvr_tail (bfd
*abfd
, bfd_byte
*p
, int r
)
6162 p
= restvr (abfd
, p
, r
);
6163 bfd_put_32 (abfd
, BLR
, p
);
6167 /* Called via elf_link_hash_traverse to transfer dynamic linking
6168 information on function code symbol entries to their corresponding
6169 function descriptor symbol entries. */
6172 func_desc_adjust (struct elf_link_hash_entry
*h
, void *inf
)
6174 struct bfd_link_info
*info
;
6175 struct ppc_link_hash_table
*htab
;
6176 struct plt_entry
*ent
;
6177 struct ppc_link_hash_entry
*fh
;
6178 struct ppc_link_hash_entry
*fdh
;
6179 bfd_boolean force_local
;
6181 fh
= (struct ppc_link_hash_entry
*) h
;
6182 if (fh
->elf
.root
.type
== bfd_link_hash_indirect
)
6186 htab
= ppc_hash_table (info
);
6190 /* Resolve undefined references to dot-symbols as the value
6191 in the function descriptor, if we have one in a regular object.
6192 This is to satisfy cases like ".quad .foo". Calls to functions
6193 in dynamic objects are handled elsewhere. */
6194 if (fh
->elf
.root
.type
== bfd_link_hash_undefweak
6195 && fh
->was_undefined
6196 && (fdh
= defined_func_desc (fh
)) != NULL
6197 && get_opd_info (fdh
->elf
.root
.u
.def
.section
) != NULL
6198 && opd_entry_value (fdh
->elf
.root
.u
.def
.section
,
6199 fdh
->elf
.root
.u
.def
.value
,
6200 &fh
->elf
.root
.u
.def
.section
,
6201 &fh
->elf
.root
.u
.def
.value
) != (bfd_vma
) -1)
6203 fh
->elf
.root
.type
= fdh
->elf
.root
.type
;
6204 fh
->elf
.forced_local
= 1;
6205 fh
->elf
.def_regular
= fdh
->elf
.def_regular
;
6206 fh
->elf
.def_dynamic
= fdh
->elf
.def_dynamic
;
6209 /* If this is a function code symbol, transfer dynamic linking
6210 information to the function descriptor symbol. */
6214 for (ent
= fh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6215 if (ent
->plt
.refcount
> 0)
6218 || fh
->elf
.root
.root
.string
[0] != '.'
6219 || fh
->elf
.root
.root
.string
[1] == '\0')
6222 /* Find the corresponding function descriptor symbol. Create it
6223 as undefined if necessary. */
6225 fdh
= lookup_fdh (fh
, htab
);
6227 && !info
->executable
6228 && (fh
->elf
.root
.type
== bfd_link_hash_undefined
6229 || fh
->elf
.root
.type
== bfd_link_hash_undefweak
))
6231 fdh
= make_fdh (info
, fh
);
6236 /* Fake function descriptors are made undefweak. If the function
6237 code symbol is strong undefined, make the fake sym the same.
6238 If the function code symbol is defined, then force the fake
6239 descriptor local; We can't support overriding of symbols in a
6240 shared library on a fake descriptor. */
6244 && fdh
->elf
.root
.type
== bfd_link_hash_undefweak
)
6246 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
6248 fdh
->elf
.root
.type
= bfd_link_hash_undefined
;
6249 bfd_link_add_undef (&htab
->elf
.root
, &fdh
->elf
.root
);
6251 else if (fh
->elf
.root
.type
== bfd_link_hash_defined
6252 || fh
->elf
.root
.type
== bfd_link_hash_defweak
)
6254 _bfd_elf_link_hash_hide_symbol (info
, &fdh
->elf
, TRUE
);
6259 && !fdh
->elf
.forced_local
6260 && (!info
->executable
6261 || fdh
->elf
.def_dynamic
6262 || fdh
->elf
.ref_dynamic
6263 || (fdh
->elf
.root
.type
== bfd_link_hash_undefweak
6264 && ELF_ST_VISIBILITY (fdh
->elf
.other
) == STV_DEFAULT
)))
6266 if (fdh
->elf
.dynindx
== -1)
6267 if (! bfd_elf_link_record_dynamic_symbol (info
, &fdh
->elf
))
6269 fdh
->elf
.ref_regular
|= fh
->elf
.ref_regular
;
6270 fdh
->elf
.ref_dynamic
|= fh
->elf
.ref_dynamic
;
6271 fdh
->elf
.ref_regular_nonweak
|= fh
->elf
.ref_regular_nonweak
;
6272 fdh
->elf
.non_got_ref
|= fh
->elf
.non_got_ref
;
6273 if (ELF_ST_VISIBILITY (fh
->elf
.other
) == STV_DEFAULT
)
6275 move_plt_plist (fh
, fdh
);
6276 fdh
->elf
.needs_plt
= 1;
6278 fdh
->is_func_descriptor
= 1;
6283 /* Now that the info is on the function descriptor, clear the
6284 function code sym info. Any function code syms for which we
6285 don't have a definition in a regular file, we force local.
6286 This prevents a shared library from exporting syms that have
6287 been imported from another library. Function code syms that
6288 are really in the library we must leave global to prevent the
6289 linker dragging in a definition from a static library. */
6290 force_local
= (!fh
->elf
.def_regular
6292 || !fdh
->elf
.def_regular
6293 || fdh
->elf
.forced_local
);
6294 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6299 /* Called near the start of bfd_elf_size_dynamic_sections. We use
6300 this hook to a) provide some gcc support functions, and b) transfer
6301 dynamic linking information gathered so far on function code symbol
6302 entries, to their corresponding function descriptor symbol entries. */
6305 ppc64_elf_func_desc_adjust (bfd
*obfd ATTRIBUTE_UNUSED
,
6306 struct bfd_link_info
*info
)
6308 struct ppc_link_hash_table
*htab
;
6310 const struct sfpr_def_parms funcs
[] =
6312 { "_savegpr0_", 14, 31, savegpr0
, savegpr0_tail
},
6313 { "_restgpr0_", 14, 29, restgpr0
, restgpr0_tail
},
6314 { "_restgpr0_", 30, 31, restgpr0
, restgpr0_tail
},
6315 { "_savegpr1_", 14, 31, savegpr1
, savegpr1_tail
},
6316 { "_restgpr1_", 14, 31, restgpr1
, restgpr1_tail
},
6317 { "_savefpr_", 14, 31, savefpr
, savefpr0_tail
},
6318 { "_restfpr_", 14, 29, restfpr
, restfpr0_tail
},
6319 { "_restfpr_", 30, 31, restfpr
, restfpr0_tail
},
6320 { "._savef", 14, 31, savefpr
, savefpr1_tail
},
6321 { "._restf", 14, 31, restfpr
, restfpr1_tail
},
6322 { "_savevr_", 20, 31, savevr
, savevr_tail
},
6323 { "_restvr_", 20, 31, restvr
, restvr_tail
}
6326 htab
= ppc_hash_table (info
);
6330 if (htab
->sfpr
== NULL
)
6331 /* We don't have any relocs. */
6334 /* Provide any missing _save* and _rest* functions. */
6335 htab
->sfpr
->size
= 0;
6336 for (i
= 0; i
< sizeof (funcs
) / sizeof (funcs
[0]); i
++)
6337 if (!sfpr_define (info
, &funcs
[i
]))
6340 elf_link_hash_traverse (&htab
->elf
, func_desc_adjust
, info
);
6342 if (htab
->sfpr
->size
== 0)
6343 htab
->sfpr
->flags
|= SEC_EXCLUDE
;
6348 /* Adjust a symbol defined by a dynamic object and referenced by a
6349 regular object. The current definition is in some section of the
6350 dynamic object, but we're not including those sections. We have to
6351 change the definition to something the rest of the link can
6355 ppc64_elf_adjust_dynamic_symbol (struct bfd_link_info
*info
,
6356 struct elf_link_hash_entry
*h
)
6358 struct ppc_link_hash_table
*htab
;
6361 htab
= ppc_hash_table (info
);
6365 /* Deal with function syms. */
6366 if (h
->type
== STT_FUNC
6367 || h
->type
== STT_GNU_IFUNC
6370 /* Clear procedure linkage table information for any symbol that
6371 won't need a .plt entry. */
6372 struct plt_entry
*ent
;
6373 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
6374 if (ent
->plt
.refcount
> 0)
6377 || (h
->type
!= STT_GNU_IFUNC
6378 && (SYMBOL_CALLS_LOCAL (info
, h
)
6379 || (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
6380 && h
->root
.type
== bfd_link_hash_undefweak
))))
6382 h
->plt
.plist
= NULL
;
6387 h
->plt
.plist
= NULL
;
6389 /* If this is a weak symbol, and there is a real definition, the
6390 processor independent code will have arranged for us to see the
6391 real definition first, and we can just use the same value. */
6392 if (h
->u
.weakdef
!= NULL
)
6394 BFD_ASSERT (h
->u
.weakdef
->root
.type
== bfd_link_hash_defined
6395 || h
->u
.weakdef
->root
.type
== bfd_link_hash_defweak
);
6396 h
->root
.u
.def
.section
= h
->u
.weakdef
->root
.u
.def
.section
;
6397 h
->root
.u
.def
.value
= h
->u
.weakdef
->root
.u
.def
.value
;
6398 if (ELIMINATE_COPY_RELOCS
)
6399 h
->non_got_ref
= h
->u
.weakdef
->non_got_ref
;
6403 /* If we are creating a shared library, we must presume that the
6404 only references to the symbol are via the global offset table.
6405 For such cases we need not do anything here; the relocations will
6406 be handled correctly by relocate_section. */
6410 /* If there are no references to this symbol that do not use the
6411 GOT, we don't need to generate a copy reloc. */
6412 if (!h
->non_got_ref
)
6415 /* Don't generate a copy reloc for symbols defined in the executable. */
6416 if (!h
->def_dynamic
|| !h
->ref_regular
|| h
->def_regular
)
6419 if (ELIMINATE_COPY_RELOCS
)
6421 struct ppc_link_hash_entry
* eh
;
6422 struct elf_dyn_relocs
*p
;
6424 eh
= (struct ppc_link_hash_entry
*) h
;
6425 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
6427 s
= p
->sec
->output_section
;
6428 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
6432 /* If we didn't find any dynamic relocs in read-only sections, then
6433 we'll be keeping the dynamic relocs and avoiding the copy reloc. */
6441 if (h
->plt
.plist
!= NULL
)
6443 /* We should never get here, but unfortunately there are versions
6444 of gcc out there that improperly (for this ABI) put initialized
6445 function pointers, vtable refs and suchlike in read-only
6446 sections. Allow them to proceed, but warn that this might
6447 break at runtime. */
6448 info
->callbacks
->einfo
6449 (_("copy reloc against `%s' requires lazy plt linking; "
6450 "avoid setting LD_BIND_NOW=1 or upgrade gcc\n"),
6451 h
->root
.root
.string
);
6454 /* This is a reference to a symbol defined by a dynamic object which
6455 is not a function. */
6459 info
->callbacks
->einfo (_("dynamic variable `%s' is zero size\n"),
6460 h
->root
.root
.string
);
6464 /* We must allocate the symbol in our .dynbss section, which will
6465 become part of the .bss section of the executable. There will be
6466 an entry for this symbol in the .dynsym section. The dynamic
6467 object will contain position independent code, so all references
6468 from the dynamic object to this symbol will go through the global
6469 offset table. The dynamic linker will use the .dynsym entry to
6470 determine the address it must put in the global offset table, so
6471 both the dynamic object and the regular object will refer to the
6472 same memory location for the variable. */
6474 /* We must generate a R_PPC64_COPY reloc to tell the dynamic linker
6475 to copy the initial value out of the dynamic object and into the
6476 runtime process image. We need to remember the offset into the
6477 .rela.bss section we are going to use. */
6478 if ((h
->root
.u
.def
.section
->flags
& SEC_ALLOC
) != 0)
6480 htab
->relbss
->size
+= sizeof (Elf64_External_Rela
);
6486 return _bfd_elf_adjust_dynamic_copy (h
, s
);
6489 /* If given a function descriptor symbol, hide both the function code
6490 sym and the descriptor. */
6492 ppc64_elf_hide_symbol (struct bfd_link_info
*info
,
6493 struct elf_link_hash_entry
*h
,
6494 bfd_boolean force_local
)
6496 struct ppc_link_hash_entry
*eh
;
6497 _bfd_elf_link_hash_hide_symbol (info
, h
, force_local
);
6499 eh
= (struct ppc_link_hash_entry
*) h
;
6500 if (eh
->is_func_descriptor
)
6502 struct ppc_link_hash_entry
*fh
= eh
->oh
;
6507 struct ppc_link_hash_table
*htab
;
6510 /* We aren't supposed to use alloca in BFD because on
6511 systems which do not have alloca the version in libiberty
6512 calls xmalloc, which might cause the program to crash
6513 when it runs out of memory. This function doesn't have a
6514 return status, so there's no way to gracefully return an
6515 error. So cheat. We know that string[-1] can be safely
6516 accessed; It's either a string in an ELF string table,
6517 or allocated in an objalloc structure. */
6519 p
= eh
->elf
.root
.root
.string
- 1;
6522 htab
= ppc_hash_table (info
);
6526 fh
= (struct ppc_link_hash_entry
*)
6527 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6530 /* Unfortunately, if it so happens that the string we were
6531 looking for was allocated immediately before this string,
6532 then we overwrote the string terminator. That's the only
6533 reason the lookup should fail. */
6536 q
= eh
->elf
.root
.root
.string
+ strlen (eh
->elf
.root
.root
.string
);
6537 while (q
>= eh
->elf
.root
.root
.string
&& *q
== *p
)
6539 if (q
< eh
->elf
.root
.root
.string
&& *p
== '.')
6540 fh
= (struct ppc_link_hash_entry
*)
6541 elf_link_hash_lookup (&htab
->elf
, p
, FALSE
, FALSE
, FALSE
);
6550 _bfd_elf_link_hash_hide_symbol (info
, &fh
->elf
, force_local
);
6555 get_sym_h (struct elf_link_hash_entry
**hp
,
6556 Elf_Internal_Sym
**symp
,
6558 unsigned char **tls_maskp
,
6559 Elf_Internal_Sym
**locsymsp
,
6560 unsigned long r_symndx
,
6563 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
6565 if (r_symndx
>= symtab_hdr
->sh_info
)
6567 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
6568 struct elf_link_hash_entry
*h
;
6570 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
6571 h
= elf_follow_link (h
);
6579 if (symsecp
!= NULL
)
6581 asection
*symsec
= NULL
;
6582 if (h
->root
.type
== bfd_link_hash_defined
6583 || h
->root
.type
== bfd_link_hash_defweak
)
6584 symsec
= h
->root
.u
.def
.section
;
6588 if (tls_maskp
!= NULL
)
6590 struct ppc_link_hash_entry
*eh
;
6592 eh
= (struct ppc_link_hash_entry
*) h
;
6593 *tls_maskp
= &eh
->tls_mask
;
6598 Elf_Internal_Sym
*sym
;
6599 Elf_Internal_Sym
*locsyms
= *locsymsp
;
6601 if (locsyms
== NULL
)
6603 locsyms
= (Elf_Internal_Sym
*) symtab_hdr
->contents
;
6604 if (locsyms
== NULL
)
6605 locsyms
= bfd_elf_get_elf_syms (ibfd
, symtab_hdr
,
6606 symtab_hdr
->sh_info
,
6607 0, NULL
, NULL
, NULL
);
6608 if (locsyms
== NULL
)
6610 *locsymsp
= locsyms
;
6612 sym
= locsyms
+ r_symndx
;
6620 if (symsecp
!= NULL
)
6621 *symsecp
= bfd_section_from_elf_index (ibfd
, sym
->st_shndx
);
6623 if (tls_maskp
!= NULL
)
6625 struct got_entry
**lgot_ents
;
6626 unsigned char *tls_mask
;
6629 lgot_ents
= elf_local_got_ents (ibfd
);
6630 if (lgot_ents
!= NULL
)
6632 struct plt_entry
**local_plt
= (struct plt_entry
**)
6633 (lgot_ents
+ symtab_hdr
->sh_info
);
6634 unsigned char *lgot_masks
= (unsigned char *)
6635 (local_plt
+ symtab_hdr
->sh_info
);
6636 tls_mask
= &lgot_masks
[r_symndx
];
6638 *tls_maskp
= tls_mask
;
6644 /* Returns TLS_MASKP for the given REL symbol. Function return is 0 on
6645 error, 2 on a toc GD type suitable for optimization, 3 on a toc LD
6646 type suitable for optimization, and 1 otherwise. */
6649 get_tls_mask (unsigned char **tls_maskp
,
6650 unsigned long *toc_symndx
,
6651 bfd_vma
*toc_addend
,
6652 Elf_Internal_Sym
**locsymsp
,
6653 const Elf_Internal_Rela
*rel
,
6656 unsigned long r_symndx
;
6658 struct elf_link_hash_entry
*h
;
6659 Elf_Internal_Sym
*sym
;
6663 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6664 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6667 if ((*tls_maskp
!= NULL
&& **tls_maskp
!= 0)
6669 || ppc64_elf_section_data (sec
) == NULL
6670 || ppc64_elf_section_data (sec
)->sec_type
!= sec_toc
)
6673 /* Look inside a TOC section too. */
6676 BFD_ASSERT (h
->root
.type
== bfd_link_hash_defined
);
6677 off
= h
->root
.u
.def
.value
;
6680 off
= sym
->st_value
;
6681 off
+= rel
->r_addend
;
6682 BFD_ASSERT (off
% 8 == 0);
6683 r_symndx
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8];
6684 next_r
= ppc64_elf_section_data (sec
)->u
.toc
.symndx
[off
/ 8 + 1];
6685 if (toc_symndx
!= NULL
)
6686 *toc_symndx
= r_symndx
;
6687 if (toc_addend
!= NULL
)
6688 *toc_addend
= ppc64_elf_section_data (sec
)->u
.toc
.add
[off
/ 8];
6689 if (!get_sym_h (&h
, &sym
, &sec
, tls_maskp
, locsymsp
, r_symndx
, ibfd
))
6691 if ((h
== NULL
|| is_static_defined (h
))
6692 && (next_r
== -1 || next_r
== -2))
6697 /* Adjust all global syms defined in opd sections. In gcc generated
6698 code for the old ABI, these will already have been done. */
6701 adjust_opd_syms (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
6703 struct ppc_link_hash_entry
*eh
;
6705 struct _opd_sec_data
*opd
;
6707 if (h
->root
.type
== bfd_link_hash_indirect
)
6710 if (h
->root
.type
!= bfd_link_hash_defined
6711 && h
->root
.type
!= bfd_link_hash_defweak
)
6714 eh
= (struct ppc_link_hash_entry
*) h
;
6715 if (eh
->adjust_done
)
6718 sym_sec
= eh
->elf
.root
.u
.def
.section
;
6719 opd
= get_opd_info (sym_sec
);
6720 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
6722 long adjust
= opd
->adjust
[eh
->elf
.root
.u
.def
.value
/ 8];
6725 /* This entry has been deleted. */
6726 asection
*dsec
= ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
;
6729 for (dsec
= sym_sec
->owner
->sections
; dsec
; dsec
= dsec
->next
)
6730 if (elf_discarded_section (dsec
))
6732 ppc64_elf_tdata (sym_sec
->owner
)->deleted_section
= dsec
;
6736 eh
->elf
.root
.u
.def
.value
= 0;
6737 eh
->elf
.root
.u
.def
.section
= dsec
;
6740 eh
->elf
.root
.u
.def
.value
+= adjust
;
6741 eh
->adjust_done
= 1;
6746 /* Handles decrementing dynamic reloc counts for the reloc specified by
6747 R_INFO in section SEC. If LOCAL_SYMS is NULL, then H and SYM_SEC
6748 have already been determined. */
6751 dec_dynrel_count (bfd_vma r_info
,
6753 struct bfd_link_info
*info
,
6754 Elf_Internal_Sym
**local_syms
,
6755 struct elf_link_hash_entry
*h
,
6758 enum elf_ppc64_reloc_type r_type
;
6759 struct elf_dyn_relocs
*p
;
6760 struct elf_dyn_relocs
**pp
;
6762 /* Can this reloc be dynamic? This switch, and later tests here
6763 should be kept in sync with the code in check_relocs. */
6764 r_type
= ELF64_R_TYPE (r_info
);
6770 case R_PPC64_TPREL16
:
6771 case R_PPC64_TPREL16_LO
:
6772 case R_PPC64_TPREL16_HI
:
6773 case R_PPC64_TPREL16_HA
:
6774 case R_PPC64_TPREL16_DS
:
6775 case R_PPC64_TPREL16_LO_DS
:
6776 case R_PPC64_TPREL16_HIGHER
:
6777 case R_PPC64_TPREL16_HIGHERA
:
6778 case R_PPC64_TPREL16_HIGHEST
:
6779 case R_PPC64_TPREL16_HIGHESTA
:
6783 case R_PPC64_TPREL64
:
6784 case R_PPC64_DTPMOD64
:
6785 case R_PPC64_DTPREL64
:
6786 case R_PPC64_ADDR64
:
6790 case R_PPC64_ADDR14
:
6791 case R_PPC64_ADDR14_BRNTAKEN
:
6792 case R_PPC64_ADDR14_BRTAKEN
:
6793 case R_PPC64_ADDR16
:
6794 case R_PPC64_ADDR16_DS
:
6795 case R_PPC64_ADDR16_HA
:
6796 case R_PPC64_ADDR16_HI
:
6797 case R_PPC64_ADDR16_HIGHER
:
6798 case R_PPC64_ADDR16_HIGHERA
:
6799 case R_PPC64_ADDR16_HIGHEST
:
6800 case R_PPC64_ADDR16_HIGHESTA
:
6801 case R_PPC64_ADDR16_LO
:
6802 case R_PPC64_ADDR16_LO_DS
:
6803 case R_PPC64_ADDR24
:
6804 case R_PPC64_ADDR32
:
6805 case R_PPC64_UADDR16
:
6806 case R_PPC64_UADDR32
:
6807 case R_PPC64_UADDR64
:
6812 if (local_syms
!= NULL
)
6814 unsigned long r_symndx
;
6815 Elf_Internal_Sym
*sym
;
6816 bfd
*ibfd
= sec
->owner
;
6818 r_symndx
= ELF64_R_SYM (r_info
);
6819 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, local_syms
, r_symndx
, ibfd
))
6824 && (must_be_dyn_reloc (info
, r_type
)
6827 || h
->root
.type
== bfd_link_hash_defweak
6828 || !h
->def_regular
))))
6829 || (ELIMINATE_COPY_RELOCS
6832 && (h
->root
.type
== bfd_link_hash_defweak
6833 || !h
->def_regular
)))
6839 pp
= &((struct ppc_link_hash_entry
*) h
)->dyn_relocs
;
6842 if (sym_sec
!= NULL
)
6844 void *vpp
= &elf_section_data (sym_sec
)->local_dynrel
;
6845 pp
= (struct elf_dyn_relocs
**) vpp
;
6849 void *vpp
= &elf_section_data (sec
)->local_dynrel
;
6850 pp
= (struct elf_dyn_relocs
**) vpp
;
6853 /* elf_gc_sweep may have already removed all dyn relocs associated
6854 with local syms for a given section. Don't report a dynreloc
6860 while ((p
= *pp
) != NULL
)
6864 if (!must_be_dyn_reloc (info
, r_type
))
6874 info
->callbacks
->einfo (_("dynreloc miscount for %B, section %A\n"),
6876 bfd_set_error (bfd_error_bad_value
);
6880 /* Remove unused Official Procedure Descriptor entries. Currently we
6881 only remove those associated with functions in discarded link-once
6882 sections, or weakly defined functions that have been overridden. It
6883 would be possible to remove many more entries for statically linked
6887 ppc64_elf_edit_opd (struct bfd_link_info
*info
, bfd_boolean non_overlapping
)
6890 bfd_boolean some_edited
= FALSE
;
6891 asection
*need_pad
= NULL
;
6893 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
6896 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
6897 Elf_Internal_Shdr
*symtab_hdr
;
6898 Elf_Internal_Sym
*local_syms
;
6900 struct _opd_sec_data
*opd
;
6901 bfd_boolean need_edit
, add_aux_fields
;
6902 bfd_size_type cnt_16b
= 0;
6904 if (!is_ppc64_elf (ibfd
))
6907 sec
= bfd_get_section_by_name (ibfd
, ".opd");
6908 if (sec
== NULL
|| sec
->size
== 0)
6911 if (sec
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
)
6914 if (sec
->output_section
== bfd_abs_section_ptr
)
6917 /* Look through the section relocs. */
6918 if ((sec
->flags
& SEC_RELOC
) == 0 || sec
->reloc_count
== 0)
6922 symtab_hdr
= &elf_symtab_hdr (ibfd
);
6924 /* Read the relocations. */
6925 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
6927 if (relstart
== NULL
)
6930 /* First run through the relocs to check they are sane, and to
6931 determine whether we need to edit this opd section. */
6935 relend
= relstart
+ sec
->reloc_count
;
6936 for (rel
= relstart
; rel
< relend
; )
6938 enum elf_ppc64_reloc_type r_type
;
6939 unsigned long r_symndx
;
6941 struct elf_link_hash_entry
*h
;
6942 Elf_Internal_Sym
*sym
;
6944 /* .opd contains a regular array of 16 or 24 byte entries. We're
6945 only interested in the reloc pointing to a function entry
6947 if (rel
->r_offset
!= offset
6948 || rel
+ 1 >= relend
6949 || (rel
+ 1)->r_offset
!= offset
+ 8)
6951 /* If someone messes with .opd alignment then after a
6952 "ld -r" we might have padding in the middle of .opd.
6953 Also, there's nothing to prevent someone putting
6954 something silly in .opd with the assembler. No .opd
6955 optimization for them! */
6957 (*_bfd_error_handler
)
6958 (_("%B: .opd is not a regular array of opd entries"), ibfd
);
6963 if ((r_type
= ELF64_R_TYPE (rel
->r_info
)) != R_PPC64_ADDR64
6964 || (r_type
= ELF64_R_TYPE ((rel
+ 1)->r_info
)) != R_PPC64_TOC
)
6966 (*_bfd_error_handler
)
6967 (_("%B: unexpected reloc type %u in .opd section"),
6973 r_symndx
= ELF64_R_SYM (rel
->r_info
);
6974 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
6978 if (sym_sec
== NULL
|| sym_sec
->owner
== NULL
)
6980 const char *sym_name
;
6982 sym_name
= h
->root
.root
.string
;
6984 sym_name
= bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
,
6987 (*_bfd_error_handler
)
6988 (_("%B: undefined sym `%s' in .opd section"),
6994 /* opd entries are always for functions defined in the
6995 current input bfd. If the symbol isn't defined in the
6996 input bfd, then we won't be using the function in this
6997 bfd; It must be defined in a linkonce section in another
6998 bfd, or is weak. It's also possible that we are
6999 discarding the function due to a linker script /DISCARD/,
7000 which we test for via the output_section. */
7001 if (sym_sec
->owner
!= ibfd
7002 || sym_sec
->output_section
== bfd_abs_section_ptr
)
7007 || (rel
+ 1 == relend
&& rel
->r_offset
== offset
+ 16))
7009 if (sec
->size
== offset
+ 24)
7014 if (rel
== relend
&& sec
->size
== offset
+ 16)
7022 if (rel
->r_offset
== offset
+ 24)
7024 else if (rel
->r_offset
!= offset
+ 16)
7026 else if (rel
+ 1 < relend
7027 && ELF64_R_TYPE (rel
[0].r_info
) == R_PPC64_ADDR64
7028 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_TOC
)
7033 else if (rel
+ 2 < relend
7034 && ELF64_R_TYPE (rel
[1].r_info
) == R_PPC64_ADDR64
7035 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_TOC
)
7044 add_aux_fields
= non_overlapping
&& cnt_16b
> 0;
7046 if (need_edit
|| add_aux_fields
)
7048 Elf_Internal_Rela
*write_rel
;
7049 Elf_Internal_Shdr
*rel_hdr
;
7050 bfd_byte
*rptr
, *wptr
;
7051 bfd_byte
*new_contents
;
7056 new_contents
= NULL
;
7057 amt
= sec
->size
* sizeof (long) / 8;
7058 opd
= &ppc64_elf_section_data (sec
)->u
.opd
;
7059 opd
->adjust
= bfd_zalloc (sec
->owner
, amt
);
7060 if (opd
->adjust
== NULL
)
7062 ppc64_elf_section_data (sec
)->sec_type
= sec_opd
;
7064 /* This seems a waste of time as input .opd sections are all
7065 zeros as generated by gcc, but I suppose there's no reason
7066 this will always be so. We might start putting something in
7067 the third word of .opd entries. */
7068 if ((sec
->flags
& SEC_IN_MEMORY
) == 0)
7071 if (!bfd_malloc_and_get_section (ibfd
, sec
, &loc
))
7076 if (local_syms
!= NULL
7077 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7079 if (elf_section_data (sec
)->relocs
!= relstart
)
7083 sec
->contents
= loc
;
7084 sec
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7087 elf_section_data (sec
)->relocs
= relstart
;
7089 new_contents
= sec
->contents
;
7092 new_contents
= bfd_malloc (sec
->size
+ cnt_16b
* 8);
7093 if (new_contents
== NULL
)
7097 wptr
= new_contents
;
7098 rptr
= sec
->contents
;
7100 write_rel
= relstart
;
7104 for (rel
= relstart
; rel
< relend
; rel
++)
7106 unsigned long r_symndx
;
7108 struct elf_link_hash_entry
*h
;
7109 Elf_Internal_Sym
*sym
;
7111 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7112 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7116 if (rel
->r_offset
== offset
)
7118 struct ppc_link_hash_entry
*fdh
= NULL
;
7120 /* See if the .opd entry is full 24 byte or
7121 16 byte (with fd_aux entry overlapped with next
7124 if ((rel
+ 2 == relend
&& sec
->size
== offset
+ 16)
7125 || (rel
+ 3 < relend
7126 && rel
[2].r_offset
== offset
+ 16
7127 && rel
[3].r_offset
== offset
+ 24
7128 && ELF64_R_TYPE (rel
[2].r_info
) == R_PPC64_ADDR64
7129 && ELF64_R_TYPE (rel
[3].r_info
) == R_PPC64_TOC
))
7133 && h
->root
.root
.string
[0] == '.')
7135 struct ppc_link_hash_table
*htab
;
7137 htab
= ppc_hash_table (info
);
7139 fdh
= lookup_fdh ((struct ppc_link_hash_entry
*) h
,
7142 && fdh
->elf
.root
.type
!= bfd_link_hash_defined
7143 && fdh
->elf
.root
.type
!= bfd_link_hash_defweak
)
7147 skip
= (sym_sec
->owner
!= ibfd
7148 || sym_sec
->output_section
== bfd_abs_section_ptr
);
7151 if (fdh
!= NULL
&& sym_sec
->owner
== ibfd
)
7153 /* Arrange for the function descriptor sym
7155 fdh
->elf
.root
.u
.def
.value
= 0;
7156 fdh
->elf
.root
.u
.def
.section
= sym_sec
;
7158 opd
->adjust
[rel
->r_offset
/ 8] = -1;
7162 /* We'll be keeping this opd entry. */
7166 /* Redefine the function descriptor symbol to
7167 this location in the opd section. It is
7168 necessary to update the value here rather
7169 than using an array of adjustments as we do
7170 for local symbols, because various places
7171 in the generic ELF code use the value
7172 stored in u.def.value. */
7173 fdh
->elf
.root
.u
.def
.value
= wptr
- new_contents
;
7174 fdh
->adjust_done
= 1;
7177 /* Local syms are a bit tricky. We could
7178 tweak them as they can be cached, but
7179 we'd need to look through the local syms
7180 for the function descriptor sym which we
7181 don't have at the moment. So keep an
7182 array of adjustments. */
7183 opd
->adjust
[rel
->r_offset
/ 8]
7184 = (wptr
- new_contents
) - (rptr
- sec
->contents
);
7187 memcpy (wptr
, rptr
, opd_ent_size
);
7188 wptr
+= opd_ent_size
;
7189 if (add_aux_fields
&& opd_ent_size
== 16)
7191 memset (wptr
, '\0', 8);
7195 rptr
+= opd_ent_size
;
7196 offset
+= opd_ent_size
;
7202 && !info
->relocatable
7203 && !dec_dynrel_count (rel
->r_info
, sec
, info
,
7209 /* We need to adjust any reloc offsets to point to the
7210 new opd entries. While we're at it, we may as well
7211 remove redundant relocs. */
7212 rel
->r_offset
+= opd
->adjust
[(offset
- opd_ent_size
) / 8];
7213 if (write_rel
!= rel
)
7214 memcpy (write_rel
, rel
, sizeof (*rel
));
7219 sec
->size
= wptr
- new_contents
;
7220 sec
->reloc_count
= write_rel
- relstart
;
7223 free (sec
->contents
);
7224 sec
->contents
= new_contents
;
7227 /* Fudge the header size too, as this is used later in
7228 elf_bfd_final_link if we are emitting relocs. */
7229 rel_hdr
= _bfd_elf_single_rel_hdr (sec
);
7230 rel_hdr
->sh_size
= sec
->reloc_count
* rel_hdr
->sh_entsize
;
7233 else if (elf_section_data (sec
)->relocs
!= relstart
)
7236 if (local_syms
!= NULL
7237 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
7239 if (!info
->keep_memory
)
7242 symtab_hdr
->contents
= (unsigned char *) local_syms
;
7247 elf_link_hash_traverse (elf_hash_table (info
), adjust_opd_syms
, NULL
);
7249 /* If we are doing a final link and the last .opd entry is just 16 byte
7250 long, add a 8 byte padding after it. */
7251 if (need_pad
!= NULL
&& !info
->relocatable
)
7255 if ((need_pad
->flags
& SEC_IN_MEMORY
) == 0)
7257 BFD_ASSERT (need_pad
->size
> 0);
7259 p
= bfd_malloc (need_pad
->size
+ 8);
7263 if (! bfd_get_section_contents (need_pad
->owner
, need_pad
,
7264 p
, 0, need_pad
->size
))
7267 need_pad
->contents
= p
;
7268 need_pad
->flags
|= (SEC_IN_MEMORY
| SEC_HAS_CONTENTS
);
7272 p
= bfd_realloc (need_pad
->contents
, need_pad
->size
+ 8);
7276 need_pad
->contents
= p
;
7279 memset (need_pad
->contents
+ need_pad
->size
, 0, 8);
7280 need_pad
->size
+= 8;
7286 /* Set htab->tls_get_addr and call the generic ELF tls_setup function. */
7289 ppc64_elf_tls_setup (struct bfd_link_info
*info
,
7290 int no_tls_get_addr_opt
,
7293 struct ppc_link_hash_table
*htab
;
7295 htab
= ppc_hash_table (info
);
7300 htab
->do_multi_toc
= 0;
7301 else if (!htab
->do_multi_toc
)
7304 htab
->tls_get_addr
= ((struct ppc_link_hash_entry
*)
7305 elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr",
7306 FALSE
, FALSE
, TRUE
));
7307 /* Move dynamic linking info to the function descriptor sym. */
7308 if (htab
->tls_get_addr
!= NULL
)
7309 func_desc_adjust (&htab
->tls_get_addr
->elf
, info
);
7310 htab
->tls_get_addr_fd
= ((struct ppc_link_hash_entry
*)
7311 elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr",
7312 FALSE
, FALSE
, TRUE
));
7313 if (!no_tls_get_addr_opt
)
7315 struct elf_link_hash_entry
*opt
, *opt_fd
, *tga
, *tga_fd
;
7317 opt
= elf_link_hash_lookup (&htab
->elf
, ".__tls_get_addr_opt",
7318 FALSE
, FALSE
, TRUE
);
7320 func_desc_adjust (opt
, info
);
7321 opt_fd
= elf_link_hash_lookup (&htab
->elf
, "__tls_get_addr_opt",
7322 FALSE
, FALSE
, TRUE
);
7324 && (opt_fd
->root
.type
== bfd_link_hash_defined
7325 || opt_fd
->root
.type
== bfd_link_hash_defweak
))
7327 /* If glibc supports an optimized __tls_get_addr call stub,
7328 signalled by the presence of __tls_get_addr_opt, and we'll
7329 be calling __tls_get_addr via a plt call stub, then
7330 make __tls_get_addr point to __tls_get_addr_opt. */
7331 tga_fd
= &htab
->tls_get_addr_fd
->elf
;
7332 if (htab
->elf
.dynamic_sections_created
7334 && (tga_fd
->type
== STT_FUNC
7335 || tga_fd
->needs_plt
)
7336 && !(SYMBOL_CALLS_LOCAL (info
, tga_fd
)
7337 || (ELF_ST_VISIBILITY (tga_fd
->other
) != STV_DEFAULT
7338 && tga_fd
->root
.type
== bfd_link_hash_undefweak
)))
7340 struct plt_entry
*ent
;
7342 for (ent
= tga_fd
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
7343 if (ent
->plt
.refcount
> 0)
7347 tga_fd
->root
.type
= bfd_link_hash_indirect
;
7348 tga_fd
->root
.u
.i
.link
= &opt_fd
->root
;
7349 ppc64_elf_copy_indirect_symbol (info
, opt_fd
, tga_fd
);
7350 if (opt_fd
->dynindx
!= -1)
7352 /* Use __tls_get_addr_opt in dynamic relocations. */
7353 opt_fd
->dynindx
= -1;
7354 _bfd_elf_strtab_delref (elf_hash_table (info
)->dynstr
,
7355 opt_fd
->dynstr_index
);
7356 if (!bfd_elf_link_record_dynamic_symbol (info
, opt_fd
))
7359 htab
->tls_get_addr_fd
= (struct ppc_link_hash_entry
*) opt_fd
;
7360 tga
= &htab
->tls_get_addr
->elf
;
7361 if (opt
!= NULL
&& tga
!= NULL
)
7363 tga
->root
.type
= bfd_link_hash_indirect
;
7364 tga
->root
.u
.i
.link
= &opt
->root
;
7365 ppc64_elf_copy_indirect_symbol (info
, opt
, tga
);
7366 _bfd_elf_link_hash_hide_symbol (info
, opt
,
7368 htab
->tls_get_addr
= (struct ppc_link_hash_entry
*) opt
;
7370 htab
->tls_get_addr_fd
->oh
= htab
->tls_get_addr
;
7371 htab
->tls_get_addr_fd
->is_func_descriptor
= 1;
7372 if (htab
->tls_get_addr
!= NULL
)
7374 htab
->tls_get_addr
->oh
= htab
->tls_get_addr_fd
;
7375 htab
->tls_get_addr
->is_func
= 1;
7381 no_tls_get_addr_opt
= TRUE
;
7383 htab
->no_tls_get_addr_opt
= no_tls_get_addr_opt
;
7384 return _bfd_elf_tls_setup (info
->output_bfd
, info
);
7387 /* Return TRUE iff REL is a branch reloc with a global symbol matching
7391 branch_reloc_hash_match (const bfd
*ibfd
,
7392 const Elf_Internal_Rela
*rel
,
7393 const struct ppc_link_hash_entry
*hash1
,
7394 const struct ppc_link_hash_entry
*hash2
)
7396 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (ibfd
);
7397 enum elf_ppc64_reloc_type r_type
= ELF64_R_TYPE (rel
->r_info
);
7398 unsigned int r_symndx
= ELF64_R_SYM (rel
->r_info
);
7400 if (r_symndx
>= symtab_hdr
->sh_info
&& is_branch_reloc (r_type
))
7402 struct elf_link_hash_entry
**sym_hashes
= elf_sym_hashes (ibfd
);
7403 struct elf_link_hash_entry
*h
;
7405 h
= sym_hashes
[r_symndx
- symtab_hdr
->sh_info
];
7406 h
= elf_follow_link (h
);
7407 if (h
== &hash1
->elf
|| h
== &hash2
->elf
)
7413 /* Run through all the TLS relocs looking for optimization
7414 opportunities. The linker has been hacked (see ppc64elf.em) to do
7415 a preliminary section layout so that we know the TLS segment
7416 offsets. We can't optimize earlier because some optimizations need
7417 to know the tp offset, and we need to optimize before allocating
7418 dynamic relocations. */
7421 ppc64_elf_tls_optimize (struct bfd_link_info
*info
)
7425 struct ppc_link_hash_table
*htab
;
7426 unsigned char *toc_ref
;
7429 if (info
->relocatable
|| !info
->executable
)
7432 htab
= ppc_hash_table (info
);
7436 /* Make two passes over the relocs. On the first pass, mark toc
7437 entries involved with tls relocs, and check that tls relocs
7438 involved in setting up a tls_get_addr call are indeed followed by
7439 such a call. If they are not, we can't do any tls optimization.
7440 On the second pass twiddle tls_mask flags to notify
7441 relocate_section that optimization can be done, and adjust got
7442 and plt refcounts. */
7444 for (pass
= 0; pass
< 2; ++pass
)
7445 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7447 Elf_Internal_Sym
*locsyms
= NULL
;
7448 asection
*toc
= bfd_get_section_by_name (ibfd
, ".toc");
7450 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7451 if (sec
->has_tls_reloc
&& !bfd_is_abs_section (sec
->output_section
))
7453 Elf_Internal_Rela
*relstart
, *rel
, *relend
;
7454 bfd_boolean found_tls_get_addr_arg
= 0;
7456 /* Read the relocations. */
7457 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
7459 if (relstart
== NULL
)
7462 relend
= relstart
+ sec
->reloc_count
;
7463 for (rel
= relstart
; rel
< relend
; rel
++)
7465 enum elf_ppc64_reloc_type r_type
;
7466 unsigned long r_symndx
;
7467 struct elf_link_hash_entry
*h
;
7468 Elf_Internal_Sym
*sym
;
7470 unsigned char *tls_mask
;
7471 unsigned char tls_set
, tls_clear
, tls_type
= 0;
7473 bfd_boolean ok_tprel
, is_local
;
7474 long toc_ref_index
= 0;
7475 int expecting_tls_get_addr
= 0;
7476 bfd_boolean ret
= FALSE
;
7478 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7479 if (!get_sym_h (&h
, &sym
, &sym_sec
, &tls_mask
, &locsyms
,
7483 if (elf_section_data (sec
)->relocs
!= relstart
)
7485 if (toc_ref
!= NULL
)
7488 && (elf_symtab_hdr (ibfd
).contents
7489 != (unsigned char *) locsyms
))
7496 if (h
->root
.type
== bfd_link_hash_defined
7497 || h
->root
.type
== bfd_link_hash_defweak
)
7498 value
= h
->root
.u
.def
.value
;
7499 else if (h
->root
.type
== bfd_link_hash_undefweak
)
7503 found_tls_get_addr_arg
= 0;
7508 /* Symbols referenced by TLS relocs must be of type
7509 STT_TLS. So no need for .opd local sym adjust. */
7510 value
= sym
->st_value
;
7519 && h
->root
.type
== bfd_link_hash_undefweak
)
7523 value
+= sym_sec
->output_offset
;
7524 value
+= sym_sec
->output_section
->vma
;
7525 value
-= htab
->elf
.tls_sec
->vma
;
7526 ok_tprel
= (value
+ TP_OFFSET
+ ((bfd_vma
) 1 << 31)
7527 < (bfd_vma
) 1 << 32);
7531 r_type
= ELF64_R_TYPE (rel
->r_info
);
7532 /* If this section has old-style __tls_get_addr calls
7533 without marker relocs, then check that each
7534 __tls_get_addr call reloc is preceded by a reloc
7535 that conceivably belongs to the __tls_get_addr arg
7536 setup insn. If we don't find matching arg setup
7537 relocs, don't do any tls optimization. */
7539 && sec
->has_tls_get_addr_call
7541 && (h
== &htab
->tls_get_addr
->elf
7542 || h
== &htab
->tls_get_addr_fd
->elf
)
7543 && !found_tls_get_addr_arg
7544 && is_branch_reloc (r_type
))
7546 info
->callbacks
->minfo (_("%H __tls_get_addr lost arg, "
7547 "TLS optimization disabled\n"),
7548 ibfd
, sec
, rel
->r_offset
);
7553 found_tls_get_addr_arg
= 0;
7556 case R_PPC64_GOT_TLSLD16
:
7557 case R_PPC64_GOT_TLSLD16_LO
:
7558 expecting_tls_get_addr
= 1;
7559 found_tls_get_addr_arg
= 1;
7562 case R_PPC64_GOT_TLSLD16_HI
:
7563 case R_PPC64_GOT_TLSLD16_HA
:
7564 /* These relocs should never be against a symbol
7565 defined in a shared lib. Leave them alone if
7566 that turns out to be the case. */
7573 tls_type
= TLS_TLS
| TLS_LD
;
7576 case R_PPC64_GOT_TLSGD16
:
7577 case R_PPC64_GOT_TLSGD16_LO
:
7578 expecting_tls_get_addr
= 1;
7579 found_tls_get_addr_arg
= 1;
7582 case R_PPC64_GOT_TLSGD16_HI
:
7583 case R_PPC64_GOT_TLSGD16_HA
:
7589 tls_set
= TLS_TLS
| TLS_TPRELGD
;
7591 tls_type
= TLS_TLS
| TLS_GD
;
7594 case R_PPC64_GOT_TPREL16_DS
:
7595 case R_PPC64_GOT_TPREL16_LO_DS
:
7596 case R_PPC64_GOT_TPREL16_HI
:
7597 case R_PPC64_GOT_TPREL16_HA
:
7602 tls_clear
= TLS_TPREL
;
7603 tls_type
= TLS_TLS
| TLS_TPREL
;
7610 found_tls_get_addr_arg
= 1;
7615 case R_PPC64_TOC16_LO
:
7616 if (sym_sec
== NULL
|| sym_sec
!= toc
)
7619 /* Mark this toc entry as referenced by a TLS
7620 code sequence. We can do that now in the
7621 case of R_PPC64_TLS, and after checking for
7622 tls_get_addr for the TOC16 relocs. */
7623 if (toc_ref
== NULL
)
7624 toc_ref
= bfd_zmalloc (toc
->output_section
->rawsize
/ 8);
7625 if (toc_ref
== NULL
)
7629 value
= h
->root
.u
.def
.value
;
7631 value
= sym
->st_value
;
7632 value
+= rel
->r_addend
;
7633 BFD_ASSERT (value
< toc
->size
&& value
% 8 == 0);
7634 toc_ref_index
= (value
+ toc
->output_offset
) / 8;
7635 if (r_type
== R_PPC64_TLS
7636 || r_type
== R_PPC64_TLSGD
7637 || r_type
== R_PPC64_TLSLD
)
7639 toc_ref
[toc_ref_index
] = 1;
7643 if (pass
!= 0 && toc_ref
[toc_ref_index
] == 0)
7648 expecting_tls_get_addr
= 2;
7651 case R_PPC64_TPREL64
:
7655 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7660 tls_set
= TLS_EXPLICIT
;
7661 tls_clear
= TLS_TPREL
;
7666 case R_PPC64_DTPMOD64
:
7670 || !toc_ref
[(rel
->r_offset
+ toc
->output_offset
) / 8])
7672 if (rel
+ 1 < relend
7674 == ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
))
7675 && rel
[1].r_offset
== rel
->r_offset
+ 8)
7679 tls_set
= TLS_EXPLICIT
| TLS_GD
;
7682 tls_set
= TLS_EXPLICIT
| TLS_GD
| TLS_TPRELGD
;
7691 tls_set
= TLS_EXPLICIT
;
7702 if (!expecting_tls_get_addr
7703 || !sec
->has_tls_get_addr_call
)
7706 if (rel
+ 1 < relend
7707 && branch_reloc_hash_match (ibfd
, rel
+ 1,
7709 htab
->tls_get_addr_fd
))
7711 if (expecting_tls_get_addr
== 2)
7713 /* Check for toc tls entries. */
7714 unsigned char *toc_tls
;
7717 retval
= get_tls_mask (&toc_tls
, NULL
, NULL
,
7722 if (toc_tls
!= NULL
)
7724 if ((*toc_tls
& (TLS_GD
| TLS_LD
)) != 0)
7725 found_tls_get_addr_arg
= 1;
7727 toc_ref
[toc_ref_index
] = 1;
7733 if (expecting_tls_get_addr
!= 1)
7736 /* Uh oh, we didn't find the expected call. We
7737 could just mark this symbol to exclude it
7738 from tls optimization but it's safer to skip
7739 the entire optimization. */
7740 info
->callbacks
->minfo (_("%H arg lost __tls_get_addr, "
7741 "TLS optimization disabled\n"),
7742 ibfd
, sec
, rel
->r_offset
);
7747 if (expecting_tls_get_addr
&& htab
->tls_get_addr
!= NULL
)
7749 struct plt_entry
*ent
;
7750 for (ent
= htab
->tls_get_addr
->elf
.plt
.plist
;
7753 if (ent
->addend
== 0)
7755 if (ent
->plt
.refcount
> 0)
7757 ent
->plt
.refcount
-= 1;
7758 expecting_tls_get_addr
= 0;
7764 if (expecting_tls_get_addr
&& htab
->tls_get_addr_fd
!= NULL
)
7766 struct plt_entry
*ent
;
7767 for (ent
= htab
->tls_get_addr_fd
->elf
.plt
.plist
;
7770 if (ent
->addend
== 0)
7772 if (ent
->plt
.refcount
> 0)
7773 ent
->plt
.refcount
-= 1;
7781 if ((tls_set
& TLS_EXPLICIT
) == 0)
7783 struct got_entry
*ent
;
7785 /* Adjust got entry for this reloc. */
7789 ent
= elf_local_got_ents (ibfd
)[r_symndx
];
7791 for (; ent
!= NULL
; ent
= ent
->next
)
7792 if (ent
->addend
== rel
->r_addend
7793 && ent
->owner
== ibfd
7794 && ent
->tls_type
== tls_type
)
7801 /* We managed to get rid of a got entry. */
7802 if (ent
->got
.refcount
> 0)
7803 ent
->got
.refcount
-= 1;
7808 /* If we got rid of a DTPMOD/DTPREL reloc pair then
7809 we'll lose one or two dyn relocs. */
7810 if (!dec_dynrel_count (rel
->r_info
, sec
, info
,
7814 if (tls_set
== (TLS_EXPLICIT
| TLS_GD
))
7816 if (!dec_dynrel_count ((rel
+ 1)->r_info
, sec
, info
,
7822 *tls_mask
|= tls_set
;
7823 *tls_mask
&= ~tls_clear
;
7826 if (elf_section_data (sec
)->relocs
!= relstart
)
7831 && (elf_symtab_hdr (ibfd
).contents
!= (unsigned char *) locsyms
))
7833 if (!info
->keep_memory
)
7836 elf_symtab_hdr (ibfd
).contents
= (unsigned char *) locsyms
;
7840 if (toc_ref
!= NULL
)
7845 /* Called via elf_link_hash_traverse from ppc64_elf_edit_toc to adjust
7846 the values of any global symbols in a toc section that has been
7847 edited. Globals in toc sections should be a rarity, so this function
7848 sets a flag if any are found in toc sections other than the one just
7849 edited, so that futher hash table traversals can be avoided. */
7851 struct adjust_toc_info
7854 unsigned long *skip
;
7855 bfd_boolean global_toc_syms
;
7858 enum toc_skip_enum
{ ref_from_discarded
= 1, can_optimize
= 2 };
7861 adjust_toc_syms (struct elf_link_hash_entry
*h
, void *inf
)
7863 struct ppc_link_hash_entry
*eh
;
7864 struct adjust_toc_info
*toc_inf
= (struct adjust_toc_info
*) inf
;
7867 if (h
->root
.type
== bfd_link_hash_indirect
)
7870 if (h
->root
.type
!= bfd_link_hash_defined
7871 && h
->root
.type
!= bfd_link_hash_defweak
)
7874 eh
= (struct ppc_link_hash_entry
*) h
;
7875 if (eh
->adjust_done
)
7878 if (eh
->elf
.root
.u
.def
.section
== toc_inf
->toc
)
7880 if (eh
->elf
.root
.u
.def
.value
> toc_inf
->toc
->rawsize
)
7881 i
= toc_inf
->toc
->rawsize
>> 3;
7883 i
= eh
->elf
.root
.u
.def
.value
>> 3;
7885 if ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
7887 (*_bfd_error_handler
)
7888 (_("%s defined on removed toc entry"), eh
->elf
.root
.root
.string
);
7891 while ((toc_inf
->skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0);
7892 eh
->elf
.root
.u
.def
.value
= (bfd_vma
) i
<< 3;
7895 eh
->elf
.root
.u
.def
.value
-= toc_inf
->skip
[i
];
7896 eh
->adjust_done
= 1;
7898 else if (strcmp (eh
->elf
.root
.u
.def
.section
->name
, ".toc") == 0)
7899 toc_inf
->global_toc_syms
= TRUE
;
7904 /* Examine all relocs referencing .toc sections in order to remove
7905 unused .toc entries. */
7908 ppc64_elf_edit_toc (struct bfd_link_info
*info
)
7911 struct adjust_toc_info toc_inf
;
7912 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
7914 htab
->do_toc_opt
= 1;
7915 toc_inf
.global_toc_syms
= TRUE
;
7916 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
7918 asection
*toc
, *sec
;
7919 Elf_Internal_Shdr
*symtab_hdr
;
7920 Elf_Internal_Sym
*local_syms
;
7921 Elf_Internal_Rela
*relstart
, *rel
, *toc_relocs
;
7922 unsigned long *skip
, *drop
;
7923 unsigned char *used
;
7924 unsigned char *keep
, last
, some_unused
;
7926 if (!is_ppc64_elf (ibfd
))
7929 toc
= bfd_get_section_by_name (ibfd
, ".toc");
7932 || toc
->sec_info_type
== ELF_INFO_TYPE_JUST_SYMS
7933 || elf_discarded_section (toc
))
7938 symtab_hdr
= &elf_symtab_hdr (ibfd
);
7940 /* Look at sections dropped from the final link. */
7943 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
7945 if (sec
->reloc_count
== 0
7946 || !elf_discarded_section (sec
)
7947 || get_opd_info (sec
)
7948 || (sec
->flags
& SEC_ALLOC
) == 0
7949 || (sec
->flags
& SEC_DEBUGGING
) != 0)
7952 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
, FALSE
);
7953 if (relstart
== NULL
)
7956 /* Run through the relocs to see which toc entries might be
7958 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
7960 enum elf_ppc64_reloc_type r_type
;
7961 unsigned long r_symndx
;
7963 struct elf_link_hash_entry
*h
;
7964 Elf_Internal_Sym
*sym
;
7967 r_type
= ELF64_R_TYPE (rel
->r_info
);
7974 case R_PPC64_TOC16_LO
:
7975 case R_PPC64_TOC16_HI
:
7976 case R_PPC64_TOC16_HA
:
7977 case R_PPC64_TOC16_DS
:
7978 case R_PPC64_TOC16_LO_DS
:
7982 r_symndx
= ELF64_R_SYM (rel
->r_info
);
7983 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
7991 val
= h
->root
.u
.def
.value
;
7993 val
= sym
->st_value
;
7994 val
+= rel
->r_addend
;
7996 if (val
>= toc
->size
)
7999 /* Anything in the toc ought to be aligned to 8 bytes.
8000 If not, don't mark as unused. */
8006 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8011 skip
[val
>> 3] = ref_from_discarded
;
8014 if (elf_section_data (sec
)->relocs
!= relstart
)
8018 /* For largetoc loads of address constants, we can convert
8019 . addis rx,2,addr@got@ha
8020 . ld ry,addr@got@l(rx)
8022 . addis rx,2,addr@toc@ha
8023 . addi ry,rx,addr@toc@l
8024 when addr is within 2G of the toc pointer. This then means
8025 that the word storing "addr" in the toc is no longer needed. */
8027 if (!ppc64_elf_tdata (ibfd
)->has_small_toc_reloc
8028 && toc
->output_section
->rawsize
< (bfd_vma
) 1 << 31
8029 && toc
->reloc_count
!= 0)
8031 /* Read toc relocs. */
8032 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8034 if (toc_relocs
== NULL
)
8037 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8039 enum elf_ppc64_reloc_type r_type
;
8040 unsigned long r_symndx
;
8042 struct elf_link_hash_entry
*h
;
8043 Elf_Internal_Sym
*sym
;
8046 r_type
= ELF64_R_TYPE (rel
->r_info
);
8047 if (r_type
!= R_PPC64_ADDR64
)
8050 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8051 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8056 || elf_discarded_section (sym_sec
))
8059 if (!SYMBOL_CALLS_LOCAL (info
, h
))
8064 if (h
->type
== STT_GNU_IFUNC
)
8066 val
= h
->root
.u
.def
.value
;
8070 if (ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
8072 val
= sym
->st_value
;
8074 val
+= rel
->r_addend
;
8075 val
+= sym_sec
->output_section
->vma
+ sym_sec
->output_offset
;
8077 /* We don't yet know the exact toc pointer value, but we
8078 know it will be somewhere in the toc section. Don't
8079 optimize if the difference from any possible toc
8080 pointer is outside [ff..f80008000, 7fff7fff]. */
8081 addr
= toc
->output_section
->vma
+ TOC_BASE_OFF
;
8082 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8085 addr
= toc
->output_section
->vma
+ toc
->output_section
->rawsize
;
8086 if (val
- addr
+ (bfd_vma
) 0x80008000 >= (bfd_vma
) 1 << 32)
8091 skip
= bfd_zmalloc (sizeof (*skip
) * (toc
->size
+ 15) / 8);
8096 skip
[rel
->r_offset
>> 3]
8097 |= can_optimize
| ((rel
- toc_relocs
) << 2);
8104 used
= bfd_zmalloc (sizeof (*used
) * (toc
->size
+ 7) / 8);
8108 if (local_syms
!= NULL
8109 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8113 && elf_section_data (sec
)->relocs
!= relstart
)
8115 if (toc_relocs
!= NULL
8116 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8123 /* Now check all kept sections that might reference the toc.
8124 Check the toc itself last. */
8125 for (sec
= (ibfd
->sections
== toc
&& toc
->next
? toc
->next
8128 sec
= (sec
== toc
? NULL
8129 : sec
->next
== NULL
? toc
8130 : sec
->next
== toc
&& toc
->next
? toc
->next
8135 if (sec
->reloc_count
== 0
8136 || elf_discarded_section (sec
)
8137 || get_opd_info (sec
)
8138 || (sec
->flags
& SEC_ALLOC
) == 0
8139 || (sec
->flags
& SEC_DEBUGGING
) != 0)
8142 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8144 if (relstart
== NULL
)
8147 /* Mark toc entries referenced as used. */
8150 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8152 enum elf_ppc64_reloc_type r_type
;
8153 unsigned long r_symndx
;
8155 struct elf_link_hash_entry
*h
;
8156 Elf_Internal_Sym
*sym
;
8159 r_type
= ELF64_R_TYPE (rel
->r_info
);
8163 case R_PPC64_TOC16_LO
:
8164 case R_PPC64_TOC16_HI
:
8165 case R_PPC64_TOC16_HA
:
8166 case R_PPC64_TOC16_DS
:
8167 case R_PPC64_TOC16_LO_DS
:
8168 /* In case we're taking addresses of toc entries. */
8169 case R_PPC64_ADDR64
:
8176 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8177 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8188 val
= h
->root
.u
.def
.value
;
8190 val
= sym
->st_value
;
8191 val
+= rel
->r_addend
;
8193 if (val
>= toc
->size
)
8196 if ((skip
[val
>> 3] & can_optimize
) != 0)
8203 case R_PPC64_TOC16_HA
:
8206 case R_PPC64_TOC16_LO_DS
:
8207 off
= rel
->r_offset
+ (bfd_big_endian (ibfd
) ? -2 : 3);
8208 if (!bfd_get_section_contents (ibfd
, sec
, &opc
, off
, 1))
8210 if ((opc
& (0x3f << 2)) == (58u << 2))
8215 /* Wrong sort of reloc, or not a ld. We may
8216 as well clear ref_from_discarded too. */
8221 /* For the toc section, we only mark as used if
8222 this entry itself isn't unused. */
8225 && (used
[rel
->r_offset
>> 3]
8226 || !(skip
[rel
->r_offset
>> 3] & ref_from_discarded
)))
8227 /* Do all the relocs again, to catch reference
8235 if (elf_section_data (sec
)->relocs
!= relstart
)
8239 /* Merge the used and skip arrays. Assume that TOC
8240 doublewords not appearing as either used or unused belong
8241 to to an entry more than one doubleword in size. */
8242 for (drop
= skip
, keep
= used
, last
= 0, some_unused
= 0;
8243 drop
< skip
+ (toc
->size
+ 7) / 8;
8248 *drop
&= ~ref_from_discarded
;
8249 if ((*drop
& can_optimize
) != 0)
8256 last
= ref_from_discarded
;
8266 bfd_byte
*contents
, *src
;
8268 Elf_Internal_Sym
*sym
;
8269 bfd_boolean local_toc_syms
= FALSE
;
8271 /* Shuffle the toc contents, and at the same time convert the
8272 skip array from booleans into offsets. */
8273 if (!bfd_malloc_and_get_section (ibfd
, toc
, &contents
))
8276 elf_section_data (toc
)->this_hdr
.contents
= contents
;
8278 for (src
= contents
, off
= 0, drop
= skip
;
8279 src
< contents
+ toc
->size
;
8282 if ((*drop
& (can_optimize
| ref_from_discarded
)) != 0)
8287 memcpy (src
- off
, src
, 8);
8291 toc
->rawsize
= toc
->size
;
8292 toc
->size
= src
- contents
- off
;
8294 /* Adjust addends for relocs against the toc section sym,
8295 and optimize any accesses we can. */
8296 for (sec
= ibfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
8298 if (sec
->reloc_count
== 0
8299 || elf_discarded_section (sec
))
8302 relstart
= _bfd_elf_link_read_relocs (ibfd
, sec
, NULL
, NULL
,
8304 if (relstart
== NULL
)
8307 for (rel
= relstart
; rel
< relstart
+ sec
->reloc_count
; ++rel
)
8309 enum elf_ppc64_reloc_type r_type
;
8310 unsigned long r_symndx
;
8312 struct elf_link_hash_entry
*h
;
8315 r_type
= ELF64_R_TYPE (rel
->r_info
);
8322 case R_PPC64_TOC16_LO
:
8323 case R_PPC64_TOC16_HI
:
8324 case R_PPC64_TOC16_HA
:
8325 case R_PPC64_TOC16_DS
:
8326 case R_PPC64_TOC16_LO_DS
:
8327 case R_PPC64_ADDR64
:
8331 r_symndx
= ELF64_R_SYM (rel
->r_info
);
8332 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
8340 val
= h
->root
.u
.def
.value
;
8343 val
= sym
->st_value
;
8345 local_toc_syms
= TRUE
;
8348 val
+= rel
->r_addend
;
8350 if (val
> toc
->rawsize
)
8352 else if ((skip
[val
>> 3] & ref_from_discarded
) != 0)
8354 else if ((skip
[val
>> 3] & can_optimize
) != 0)
8356 Elf_Internal_Rela
*tocrel
8357 = toc_relocs
+ (skip
[val
>> 3] >> 2);
8358 unsigned long tsym
= ELF64_R_SYM (tocrel
->r_info
);
8362 case R_PPC64_TOC16_HA
:
8363 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_TOC16_HA
);
8366 case R_PPC64_TOC16_LO_DS
:
8367 rel
->r_info
= ELF64_R_INFO (tsym
, R_PPC64_LO_DS_OPT
);
8373 rel
->r_addend
= tocrel
->r_addend
;
8374 elf_section_data (sec
)->relocs
= relstart
;
8378 if (h
!= NULL
|| sym
->st_value
!= 0)
8381 rel
->r_addend
-= skip
[val
>> 3];
8382 elf_section_data (sec
)->relocs
= relstart
;
8385 if (elf_section_data (sec
)->relocs
!= relstart
)
8389 /* We shouldn't have local or global symbols defined in the TOC,
8390 but handle them anyway. */
8391 if (local_syms
!= NULL
)
8392 for (sym
= local_syms
;
8393 sym
< local_syms
+ symtab_hdr
->sh_info
;
8395 if (sym
->st_value
!= 0
8396 && bfd_section_from_elf_index (ibfd
, sym
->st_shndx
) == toc
)
8400 if (sym
->st_value
> toc
->rawsize
)
8401 i
= toc
->rawsize
>> 3;
8403 i
= sym
->st_value
>> 3;
8405 if ((skip
[i
] & (ref_from_discarded
| can_optimize
)) != 0)
8408 (*_bfd_error_handler
)
8409 (_("%s defined on removed toc entry"),
8410 bfd_elf_sym_name (ibfd
, symtab_hdr
, sym
, NULL
));
8413 while ((skip
[i
] & (ref_from_discarded
| can_optimize
)));
8414 sym
->st_value
= (bfd_vma
) i
<< 3;
8417 sym
->st_value
-= skip
[i
];
8418 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8421 /* Adjust any global syms defined in this toc input section. */
8422 if (toc_inf
.global_toc_syms
)
8425 toc_inf
.skip
= skip
;
8426 toc_inf
.global_toc_syms
= FALSE
;
8427 elf_link_hash_traverse (elf_hash_table (info
), adjust_toc_syms
,
8431 if (toc
->reloc_count
!= 0)
8433 Elf_Internal_Shdr
*rel_hdr
;
8434 Elf_Internal_Rela
*wrel
;
8437 /* Remove unused toc relocs, and adjust those we keep. */
8438 if (toc_relocs
== NULL
)
8439 toc_relocs
= _bfd_elf_link_read_relocs (ibfd
, toc
, NULL
, NULL
,
8441 if (toc_relocs
== NULL
)
8445 for (rel
= toc_relocs
; rel
< toc_relocs
+ toc
->reloc_count
; ++rel
)
8446 if ((skip
[rel
->r_offset
>> 3]
8447 & (ref_from_discarded
| can_optimize
)) == 0)
8449 wrel
->r_offset
= rel
->r_offset
- skip
[rel
->r_offset
>> 3];
8450 wrel
->r_info
= rel
->r_info
;
8451 wrel
->r_addend
= rel
->r_addend
;
8454 else if (!dec_dynrel_count (rel
->r_info
, toc
, info
,
8455 &local_syms
, NULL
, NULL
))
8458 elf_section_data (toc
)->relocs
= toc_relocs
;
8459 toc
->reloc_count
= wrel
- toc_relocs
;
8460 rel_hdr
= _bfd_elf_single_rel_hdr (toc
);
8461 sz
= rel_hdr
->sh_entsize
;
8462 rel_hdr
->sh_size
= toc
->reloc_count
* sz
;
8465 else if (toc_relocs
!= NULL
8466 && elf_section_data (toc
)->relocs
!= toc_relocs
)
8469 if (local_syms
!= NULL
8470 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
8472 if (!info
->keep_memory
)
8475 symtab_hdr
->contents
= (unsigned char *) local_syms
;
8483 /* Return true iff input section I references the TOC using
8484 instructions limited to +/-32k offsets. */
8487 ppc64_elf_has_small_toc_reloc (asection
*i
)
8489 return (is_ppc64_elf (i
->owner
)
8490 && ppc64_elf_tdata (i
->owner
)->has_small_toc_reloc
);
8493 /* Allocate space for one GOT entry. */
8496 allocate_got (struct elf_link_hash_entry
*h
,
8497 struct bfd_link_info
*info
,
8498 struct got_entry
*gent
)
8500 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
8502 struct ppc_link_hash_entry
*eh
= (struct ppc_link_hash_entry
*) h
;
8503 int entsize
= (gent
->tls_type
& eh
->tls_mask
& (TLS_GD
| TLS_LD
)
8505 int rentsize
= (gent
->tls_type
& eh
->tls_mask
& TLS_GD
8506 ? 2 : 1) * sizeof (Elf64_External_Rela
);
8507 asection
*got
= ppc64_elf_tdata (gent
->owner
)->got
;
8509 gent
->got
.offset
= got
->size
;
8510 got
->size
+= entsize
;
8512 dyn
= htab
->elf
.dynamic_sections_created
;
8514 || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, 0, h
))
8515 && (ELF_ST_VISIBILITY (h
->other
) == STV_DEFAULT
8516 || h
->root
.type
!= bfd_link_hash_undefweak
))
8518 asection
*relgot
= ppc64_elf_tdata (gent
->owner
)->relgot
;
8519 relgot
->size
+= rentsize
;
8521 else if (h
->type
== STT_GNU_IFUNC
)
8523 asection
*relgot
= htab
->reliplt
;
8524 relgot
->size
+= rentsize
;
8525 htab
->got_reli_size
+= rentsize
;
8529 /* This function merges got entries in the same toc group. */
8532 merge_got_entries (struct got_entry
**pent
)
8534 struct got_entry
*ent
, *ent2
;
8536 for (ent
= *pent
; ent
!= NULL
; ent
= ent
->next
)
8537 if (!ent
->is_indirect
)
8538 for (ent2
= ent
->next
; ent2
!= NULL
; ent2
= ent2
->next
)
8539 if (!ent2
->is_indirect
8540 && ent2
->addend
== ent
->addend
8541 && ent2
->tls_type
== ent
->tls_type
8542 && elf_gp (ent2
->owner
) == elf_gp (ent
->owner
))
8544 ent2
->is_indirect
= TRUE
;
8545 ent2
->got
.ent
= ent
;
8549 /* Allocate space in .plt, .got and associated reloc sections for
8553 allocate_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8555 struct bfd_link_info
*info
;
8556 struct ppc_link_hash_table
*htab
;
8558 struct ppc_link_hash_entry
*eh
;
8559 struct elf_dyn_relocs
*p
;
8560 struct got_entry
**pgent
, *gent
;
8562 if (h
->root
.type
== bfd_link_hash_indirect
)
8565 info
= (struct bfd_link_info
*) inf
;
8566 htab
= ppc_hash_table (info
);
8570 if ((htab
->elf
.dynamic_sections_created
8572 && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info
->shared
, h
))
8573 || h
->type
== STT_GNU_IFUNC
)
8575 struct plt_entry
*pent
;
8576 bfd_boolean doneone
= FALSE
;
8577 for (pent
= h
->plt
.plist
; pent
!= NULL
; pent
= pent
->next
)
8578 if (pent
->plt
.refcount
> 0)
8580 if (!htab
->elf
.dynamic_sections_created
8581 || h
->dynindx
== -1)
8584 pent
->plt
.offset
= s
->size
;
8585 s
->size
+= PLT_ENTRY_SIZE
;
8590 /* If this is the first .plt entry, make room for the special
8594 s
->size
+= PLT_INITIAL_ENTRY_SIZE
;
8596 pent
->plt
.offset
= s
->size
;
8598 /* Make room for this entry. */
8599 s
->size
+= PLT_ENTRY_SIZE
;
8601 /* Make room for the .glink code. */
8604 s
->size
+= GLINK_CALL_STUB_SIZE
;
8605 /* We need bigger stubs past index 32767. */
8606 if (s
->size
>= GLINK_CALL_STUB_SIZE
+ 32768*2*4)
8610 /* We also need to make an entry in the .rela.plt section. */
8613 s
->size
+= sizeof (Elf64_External_Rela
);
8617 pent
->plt
.offset
= (bfd_vma
) -1;
8620 h
->plt
.plist
= NULL
;
8626 h
->plt
.plist
= NULL
;
8630 eh
= (struct ppc_link_hash_entry
*) h
;
8631 /* Run through the TLS GD got entries first if we're changing them
8633 if ((eh
->tls_mask
& TLS_TPRELGD
) != 0)
8634 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8635 if (gent
->got
.refcount
> 0
8636 && (gent
->tls_type
& TLS_GD
) != 0)
8638 /* This was a GD entry that has been converted to TPREL. If
8639 there happens to be a TPREL entry we can use that one. */
8640 struct got_entry
*ent
;
8641 for (ent
= h
->got
.glist
; ent
!= NULL
; ent
= ent
->next
)
8642 if (ent
->got
.refcount
> 0
8643 && (ent
->tls_type
& TLS_TPREL
) != 0
8644 && ent
->addend
== gent
->addend
8645 && ent
->owner
== gent
->owner
)
8647 gent
->got
.refcount
= 0;
8651 /* If not, then we'll be using our own TPREL entry. */
8652 if (gent
->got
.refcount
!= 0)
8653 gent
->tls_type
= TLS_TLS
| TLS_TPREL
;
8656 /* Remove any list entry that won't generate a word in the GOT before
8657 we call merge_got_entries. Otherwise we risk merging to empty
8659 pgent
= &h
->got
.glist
;
8660 while ((gent
= *pgent
) != NULL
)
8661 if (gent
->got
.refcount
> 0)
8663 if ((gent
->tls_type
& TLS_LD
) != 0
8666 ppc64_tlsld_got (gent
->owner
)->got
.refcount
+= 1;
8667 *pgent
= gent
->next
;
8670 pgent
= &gent
->next
;
8673 *pgent
= gent
->next
;
8675 if (!htab
->do_multi_toc
)
8676 merge_got_entries (&h
->got
.glist
);
8678 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
8679 if (!gent
->is_indirect
)
8681 /* Make sure this symbol is output as a dynamic symbol.
8682 Undefined weak syms won't yet be marked as dynamic,
8683 nor will all TLS symbols. */
8684 if (h
->dynindx
== -1
8686 && h
->type
!= STT_GNU_IFUNC
8687 && htab
->elf
.dynamic_sections_created
)
8689 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8693 if (!is_ppc64_elf (gent
->owner
))
8696 allocate_got (h
, info
, gent
);
8699 if (eh
->dyn_relocs
== NULL
8700 || (!htab
->elf
.dynamic_sections_created
8701 && h
->type
!= STT_GNU_IFUNC
))
8704 /* In the shared -Bsymbolic case, discard space allocated for
8705 dynamic pc-relative relocs against symbols which turn out to be
8706 defined in regular objects. For the normal shared case, discard
8707 space for relocs that have become local due to symbol visibility
8712 /* Relocs that use pc_count are those that appear on a call insn,
8713 or certain REL relocs (see must_be_dyn_reloc) that can be
8714 generated via assembly. We want calls to protected symbols to
8715 resolve directly to the function rather than going via the plt.
8716 If people want function pointer comparisons to work as expected
8717 then they should avoid writing weird assembly. */
8718 if (SYMBOL_CALLS_LOCAL (info
, h
))
8720 struct elf_dyn_relocs
**pp
;
8722 for (pp
= &eh
->dyn_relocs
; (p
= *pp
) != NULL
; )
8724 p
->count
-= p
->pc_count
;
8733 /* Also discard relocs on undefined weak syms with non-default
8735 if (eh
->dyn_relocs
!= NULL
8736 && h
->root
.type
== bfd_link_hash_undefweak
)
8738 if (ELF_ST_VISIBILITY (h
->other
) != STV_DEFAULT
)
8739 eh
->dyn_relocs
= NULL
;
8741 /* Make sure this symbol is output as a dynamic symbol.
8742 Undefined weak syms won't yet be marked as dynamic. */
8743 else if (h
->dynindx
== -1
8744 && !h
->forced_local
)
8746 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8751 else if (h
->type
== STT_GNU_IFUNC
)
8753 if (!h
->non_got_ref
)
8754 eh
->dyn_relocs
= NULL
;
8756 else if (ELIMINATE_COPY_RELOCS
)
8758 /* For the non-shared case, discard space for relocs against
8759 symbols which turn out to need copy relocs or are not
8765 /* Make sure this symbol is output as a dynamic symbol.
8766 Undefined weak syms won't yet be marked as dynamic. */
8767 if (h
->dynindx
== -1
8768 && !h
->forced_local
)
8770 if (! bfd_elf_link_record_dynamic_symbol (info
, h
))
8774 /* If that succeeded, we know we'll be keeping all the
8776 if (h
->dynindx
!= -1)
8780 eh
->dyn_relocs
= NULL
;
8785 /* Finally, allocate space. */
8786 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8788 asection
*sreloc
= elf_section_data (p
->sec
)->sreloc
;
8789 if (!htab
->elf
.dynamic_sections_created
)
8790 sreloc
= htab
->reliplt
;
8791 sreloc
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8797 /* Find any dynamic relocs that apply to read-only sections. */
8800 readonly_dynrelocs (struct elf_link_hash_entry
*h
, void *inf
)
8802 struct ppc_link_hash_entry
*eh
;
8803 struct elf_dyn_relocs
*p
;
8805 eh
= (struct ppc_link_hash_entry
*) h
;
8806 for (p
= eh
->dyn_relocs
; p
!= NULL
; p
= p
->next
)
8808 asection
*s
= p
->sec
->output_section
;
8810 if (s
!= NULL
&& (s
->flags
& SEC_READONLY
) != 0)
8812 struct bfd_link_info
*info
= inf
;
8814 info
->flags
|= DF_TEXTREL
;
8816 /* Not an error, just cut short the traversal. */
8823 /* Set the sizes of the dynamic sections. */
8826 ppc64_elf_size_dynamic_sections (bfd
*output_bfd ATTRIBUTE_UNUSED
,
8827 struct bfd_link_info
*info
)
8829 struct ppc_link_hash_table
*htab
;
8834 struct got_entry
*first_tlsld
;
8836 htab
= ppc_hash_table (info
);
8840 dynobj
= htab
->elf
.dynobj
;
8844 if (htab
->elf
.dynamic_sections_created
)
8846 /* Set the contents of the .interp section to the interpreter. */
8847 if (info
->executable
)
8849 s
= bfd_get_section_by_name (dynobj
, ".interp");
8852 s
->size
= sizeof ELF_DYNAMIC_INTERPRETER
;
8853 s
->contents
= (unsigned char *) ELF_DYNAMIC_INTERPRETER
;
8857 /* Set up .got offsets for local syms, and space for local dynamic
8859 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8861 struct got_entry
**lgot_ents
;
8862 struct got_entry
**end_lgot_ents
;
8863 struct plt_entry
**local_plt
;
8864 struct plt_entry
**end_local_plt
;
8865 unsigned char *lgot_masks
;
8866 bfd_size_type locsymcount
;
8867 Elf_Internal_Shdr
*symtab_hdr
;
8870 if (!is_ppc64_elf (ibfd
))
8873 for (s
= ibfd
->sections
; s
!= NULL
; s
= s
->next
)
8875 struct elf_dyn_relocs
*p
;
8877 for (p
= elf_section_data (s
)->local_dynrel
; p
!= NULL
; p
= p
->next
)
8879 if (!bfd_is_abs_section (p
->sec
)
8880 && bfd_is_abs_section (p
->sec
->output_section
))
8882 /* Input section has been discarded, either because
8883 it is a copy of a linkonce section or due to
8884 linker script /DISCARD/, so we'll be discarding
8887 else if (p
->count
!= 0)
8889 srel
= elf_section_data (p
->sec
)->sreloc
;
8890 if (!htab
->elf
.dynamic_sections_created
)
8891 srel
= htab
->reliplt
;
8892 srel
->size
+= p
->count
* sizeof (Elf64_External_Rela
);
8893 if ((p
->sec
->output_section
->flags
& SEC_READONLY
) != 0)
8894 info
->flags
|= DF_TEXTREL
;
8899 lgot_ents
= elf_local_got_ents (ibfd
);
8903 symtab_hdr
= &elf_symtab_hdr (ibfd
);
8904 locsymcount
= symtab_hdr
->sh_info
;
8905 end_lgot_ents
= lgot_ents
+ locsymcount
;
8906 local_plt
= (struct plt_entry
**) end_lgot_ents
;
8907 end_local_plt
= local_plt
+ locsymcount
;
8908 lgot_masks
= (unsigned char *) end_local_plt
;
8909 s
= ppc64_elf_tdata (ibfd
)->got
;
8910 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8911 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
8913 struct got_entry
**pent
, *ent
;
8916 while ((ent
= *pent
) != NULL
)
8917 if (ent
->got
.refcount
> 0)
8919 if ((ent
->tls_type
& *lgot_masks
& TLS_LD
) != 0)
8921 ppc64_tlsld_got (ibfd
)->got
.refcount
+= 1;
8926 unsigned int num
= 1;
8927 ent
->got
.offset
= s
->size
;
8928 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
8932 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
8933 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
8936 += num
* sizeof (Elf64_External_Rela
);
8938 += num
* sizeof (Elf64_External_Rela
);
8947 /* Allocate space for calls to local STT_GNU_IFUNC syms in .iplt. */
8948 for (; local_plt
< end_local_plt
; ++local_plt
)
8950 struct plt_entry
*ent
;
8952 for (ent
= *local_plt
; ent
!= NULL
; ent
= ent
->next
)
8953 if (ent
->plt
.refcount
> 0)
8956 ent
->plt
.offset
= s
->size
;
8957 s
->size
+= PLT_ENTRY_SIZE
;
8959 htab
->reliplt
->size
+= sizeof (Elf64_External_Rela
);
8962 ent
->plt
.offset
= (bfd_vma
) -1;
8966 /* Allocate global sym .plt and .got entries, and space for global
8967 sym dynamic relocs. */
8968 elf_link_hash_traverse (&htab
->elf
, allocate_dynrelocs
, info
);
8971 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
8973 struct got_entry
*ent
;
8975 if (!is_ppc64_elf (ibfd
))
8978 ent
= ppc64_tlsld_got (ibfd
);
8979 if (ent
->got
.refcount
> 0)
8981 if (!htab
->do_multi_toc
&& first_tlsld
!= NULL
)
8983 ent
->is_indirect
= TRUE
;
8984 ent
->got
.ent
= first_tlsld
;
8988 if (first_tlsld
== NULL
)
8990 s
= ppc64_elf_tdata (ibfd
)->got
;
8991 ent
->got
.offset
= s
->size
;
8996 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
8997 srel
->size
+= sizeof (Elf64_External_Rela
);
9002 ent
->got
.offset
= (bfd_vma
) -1;
9005 /* We now have determined the sizes of the various dynamic sections.
9006 Allocate memory for them. */
9008 for (s
= dynobj
->sections
; s
!= NULL
; s
= s
->next
)
9010 if ((s
->flags
& SEC_LINKER_CREATED
) == 0)
9013 if (s
== htab
->brlt
|| s
== htab
->relbrlt
)
9014 /* These haven't been allocated yet; don't strip. */
9016 else if (s
== htab
->got
9020 || s
== htab
->dynbss
)
9022 /* Strip this section if we don't need it; see the
9025 else if (CONST_STRNEQ (s
->name
, ".rela"))
9029 if (s
!= htab
->relplt
)
9032 /* We use the reloc_count field as a counter if we need
9033 to copy relocs into the output file. */
9039 /* It's not one of our sections, so don't allocate space. */
9045 /* If we don't need this section, strip it from the
9046 output file. This is mostly to handle .rela.bss and
9047 .rela.plt. We must create both sections in
9048 create_dynamic_sections, because they must be created
9049 before the linker maps input sections to output
9050 sections. The linker does that before
9051 adjust_dynamic_symbol is called, and it is that
9052 function which decides whether anything needs to go
9053 into these sections. */
9054 s
->flags
|= SEC_EXCLUDE
;
9058 if ((s
->flags
& SEC_HAS_CONTENTS
) == 0)
9061 /* Allocate memory for the section contents. We use bfd_zalloc
9062 here in case unused entries are not reclaimed before the
9063 section's contents are written out. This should not happen,
9064 but this way if it does we get a R_PPC64_NONE reloc in .rela
9065 sections instead of garbage.
9066 We also rely on the section contents being zero when writing
9068 s
->contents
= bfd_zalloc (dynobj
, s
->size
);
9069 if (s
->contents
== NULL
)
9073 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
9075 if (!is_ppc64_elf (ibfd
))
9078 s
= ppc64_elf_tdata (ibfd
)->got
;
9079 if (s
!= NULL
&& s
!= htab
->got
)
9082 s
->flags
|= SEC_EXCLUDE
;
9085 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9086 if (s
->contents
== NULL
)
9090 s
= ppc64_elf_tdata (ibfd
)->relgot
;
9094 s
->flags
|= SEC_EXCLUDE
;
9097 s
->contents
= bfd_zalloc (ibfd
, s
->size
);
9098 if (s
->contents
== NULL
)
9106 if (htab
->elf
.dynamic_sections_created
)
9108 /* Add some entries to the .dynamic section. We fill in the
9109 values later, in ppc64_elf_finish_dynamic_sections, but we
9110 must add the entries now so that we get the correct size for
9111 the .dynamic section. The DT_DEBUG entry is filled in by the
9112 dynamic linker and used by the debugger. */
9113 #define add_dynamic_entry(TAG, VAL) \
9114 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
9116 if (info
->executable
)
9118 if (!add_dynamic_entry (DT_DEBUG
, 0))
9122 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
9124 if (!add_dynamic_entry (DT_PLTGOT
, 0)
9125 || !add_dynamic_entry (DT_PLTRELSZ
, 0)
9126 || !add_dynamic_entry (DT_PLTREL
, DT_RELA
)
9127 || !add_dynamic_entry (DT_JMPREL
, 0)
9128 || !add_dynamic_entry (DT_PPC64_GLINK
, 0))
9134 if (!add_dynamic_entry (DT_PPC64_OPD
, 0)
9135 || !add_dynamic_entry (DT_PPC64_OPDSZ
, 0))
9139 if (!htab
->no_tls_get_addr_opt
9140 && htab
->tls_get_addr_fd
!= NULL
9141 && htab
->tls_get_addr_fd
->elf
.plt
.plist
!= NULL
9142 && !add_dynamic_entry (DT_PPC64_TLSOPT
, 0))
9147 if (!add_dynamic_entry (DT_RELA
, 0)
9148 || !add_dynamic_entry (DT_RELASZ
, 0)
9149 || !add_dynamic_entry (DT_RELAENT
, sizeof (Elf64_External_Rela
)))
9152 /* If any dynamic relocs apply to a read-only section,
9153 then we need a DT_TEXTREL entry. */
9154 if ((info
->flags
& DF_TEXTREL
) == 0)
9155 elf_link_hash_traverse (&htab
->elf
, readonly_dynrelocs
, info
);
9157 if ((info
->flags
& DF_TEXTREL
) != 0)
9159 if (!add_dynamic_entry (DT_TEXTREL
, 0))
9164 #undef add_dynamic_entry
9169 /* Determine the type of stub needed, if any, for a call. */
9171 static inline enum ppc_stub_type
9172 ppc_type_of_stub (asection
*input_sec
,
9173 const Elf_Internal_Rela
*rel
,
9174 struct ppc_link_hash_entry
**hash
,
9175 struct plt_entry
**plt_ent
,
9176 bfd_vma destination
)
9178 struct ppc_link_hash_entry
*h
= *hash
;
9180 bfd_vma branch_offset
;
9181 bfd_vma max_branch_offset
;
9182 enum elf_ppc64_reloc_type r_type
;
9186 struct plt_entry
*ent
;
9187 struct ppc_link_hash_entry
*fdh
= h
;
9189 && h
->oh
->is_func_descriptor
)
9191 fdh
= ppc_follow_link (h
->oh
);
9195 for (ent
= fdh
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
9196 if (ent
->addend
== rel
->r_addend
9197 && ent
->plt
.offset
!= (bfd_vma
) -1)
9200 return ppc_stub_plt_call
;
9203 /* Here, we know we don't have a plt entry. If we don't have a
9204 either a defined function descriptor or a defined entry symbol
9205 in a regular object file, then it is pointless trying to make
9206 any other type of stub. */
9207 if (!is_static_defined (&fdh
->elf
)
9208 && !is_static_defined (&h
->elf
))
9209 return ppc_stub_none
;
9211 else if (elf_local_got_ents (input_sec
->owner
) != NULL
)
9213 Elf_Internal_Shdr
*symtab_hdr
= &elf_symtab_hdr (input_sec
->owner
);
9214 struct plt_entry
**local_plt
= (struct plt_entry
**)
9215 elf_local_got_ents (input_sec
->owner
) + symtab_hdr
->sh_info
;
9216 unsigned long r_symndx
= ELF64_R_SYM (rel
->r_info
);
9218 if (local_plt
[r_symndx
] != NULL
)
9220 struct plt_entry
*ent
;
9222 for (ent
= local_plt
[r_symndx
]; ent
!= NULL
; ent
= ent
->next
)
9223 if (ent
->addend
== rel
->r_addend
9224 && ent
->plt
.offset
!= (bfd_vma
) -1)
9227 return ppc_stub_plt_call
;
9232 /* Determine where the call point is. */
9233 location
= (input_sec
->output_offset
9234 + input_sec
->output_section
->vma
9237 branch_offset
= destination
- location
;
9238 r_type
= ELF64_R_TYPE (rel
->r_info
);
9240 /* Determine if a long branch stub is needed. */
9241 max_branch_offset
= 1 << 25;
9242 if (r_type
!= R_PPC64_REL24
)
9243 max_branch_offset
= 1 << 15;
9245 if (branch_offset
+ max_branch_offset
>= 2 * max_branch_offset
)
9246 /* We need a stub. Figure out whether a long_branch or plt_branch
9248 return ppc_stub_long_branch
;
9250 return ppc_stub_none
;
9253 /* Build a .plt call stub. */
9255 static inline bfd_byte
*
9256 build_plt_stub (bfd
*obfd
, bfd_byte
*p
, int offset
, Elf_Internal_Rela
*r
)
9258 #define PPC_LO(v) ((v) & 0xffff)
9259 #define PPC_HI(v) (((v) >> 16) & 0xffff)
9260 #define PPC_HA(v) PPC_HI ((v) + 0x8000)
9262 if (PPC_HA (offset
) != 0)
9266 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9267 r
[1].r_offset
= r
[0].r_offset
+ 8;
9268 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9269 r
[1].r_addend
= r
[0].r_addend
;
9270 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9272 r
[2].r_offset
= r
[1].r_offset
+ 4;
9273 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO
);
9274 r
[2].r_addend
= r
[0].r_addend
;
9278 r
[2].r_offset
= r
[1].r_offset
+ 8;
9279 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9280 r
[2].r_addend
= r
[0].r_addend
+ 8;
9281 r
[3].r_offset
= r
[2].r_offset
+ 4;
9282 r
[3].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9283 r
[3].r_addend
= r
[0].r_addend
+ 16;
9286 bfd_put_32 (obfd
, ADDIS_R12_R2
| PPC_HA (offset
), p
), p
+= 4;
9287 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9288 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
), p
), p
+= 4;
9289 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9291 bfd_put_32 (obfd
, ADDI_R12_R12
| PPC_LO (offset
), p
), p
+= 4;
9294 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9295 bfd_put_32 (obfd
, LD_R2_0R12
| PPC_LO (offset
+ 8), p
), p
+= 4;
9296 bfd_put_32 (obfd
, LD_R11_0R12
| PPC_LO (offset
+ 16), p
), p
+= 4;
9297 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9304 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9305 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9307 r
[1].r_offset
= r
[0].r_offset
+ 4;
9308 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16
);
9309 r
[1].r_addend
= r
[0].r_addend
;
9313 r
[1].r_offset
= r
[0].r_offset
+ 8;
9314 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9315 r
[1].r_addend
= r
[0].r_addend
+ 16;
9316 r
[2].r_offset
= r
[1].r_offset
+ 4;
9317 r
[2].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9318 r
[2].r_addend
= r
[0].r_addend
+ 8;
9321 bfd_put_32 (obfd
, STD_R2_40R1
, p
), p
+= 4;
9322 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
), p
), p
+= 4;
9323 if (PPC_HA (offset
+ 16) != PPC_HA (offset
))
9325 bfd_put_32 (obfd
, ADDI_R2_R2
| PPC_LO (offset
), p
), p
+= 4;
9328 bfd_put_32 (obfd
, MTCTR_R11
, p
), p
+= 4;
9329 bfd_put_32 (obfd
, LD_R11_0R2
| PPC_LO (offset
+ 16), p
), p
+= 4;
9330 bfd_put_32 (obfd
, LD_R2_0R2
| PPC_LO (offset
+ 8), p
), p
+= 4;
9331 bfd_put_32 (obfd
, BCTR
, p
), p
+= 4;
9336 /* Build a special .plt call stub for __tls_get_addr. */
9338 #define LD_R11_0R3 0xe9630000
9339 #define LD_R12_0R3 0xe9830000
9340 #define MR_R0_R3 0x7c601b78
9341 #define CMPDI_R11_0 0x2c2b0000
9342 #define ADD_R3_R12_R13 0x7c6c6a14
9343 #define BEQLR 0x4d820020
9344 #define MR_R3_R0 0x7c030378
9345 #define MFLR_R11 0x7d6802a6
9346 #define STD_R11_0R1 0xf9610000
9347 #define BCTRL 0x4e800421
9348 #define LD_R11_0R1 0xe9610000
9349 #define LD_R2_0R1 0xe8410000
9350 #define MTLR_R11 0x7d6803a6
9352 static inline bfd_byte
*
9353 build_tls_get_addr_stub (bfd
*obfd
, bfd_byte
*p
, int offset
,
9354 Elf_Internal_Rela
*r
)
9356 bfd_put_32 (obfd
, LD_R11_0R3
+ 0, p
), p
+= 4;
9357 bfd_put_32 (obfd
, LD_R12_0R3
+ 8, p
), p
+= 4;
9358 bfd_put_32 (obfd
, MR_R0_R3
, p
), p
+= 4;
9359 bfd_put_32 (obfd
, CMPDI_R11_0
, p
), p
+= 4;
9360 bfd_put_32 (obfd
, ADD_R3_R12_R13
, p
), p
+= 4;
9361 bfd_put_32 (obfd
, BEQLR
, p
), p
+= 4;
9362 bfd_put_32 (obfd
, MR_R3_R0
, p
), p
+= 4;
9363 bfd_put_32 (obfd
, MFLR_R11
, p
), p
+= 4;
9364 bfd_put_32 (obfd
, STD_R11_0R1
+ 32, p
), p
+= 4;
9367 r
[0].r_offset
+= 9 * 4;
9368 p
= build_plt_stub (obfd
, p
, offset
, r
);
9369 bfd_put_32 (obfd
, BCTRL
, p
- 4);
9371 bfd_put_32 (obfd
, LD_R11_0R1
+ 32, p
), p
+= 4;
9372 bfd_put_32 (obfd
, LD_R2_0R1
+ 40, p
), p
+= 4;
9373 bfd_put_32 (obfd
, MTLR_R11
, p
), p
+= 4;
9374 bfd_put_32 (obfd
, BLR
, p
), p
+= 4;
9379 static Elf_Internal_Rela
*
9380 get_relocs (asection
*sec
, int count
)
9382 Elf_Internal_Rela
*relocs
;
9383 struct bfd_elf_section_data
*elfsec_data
;
9385 elfsec_data
= elf_section_data (sec
);
9386 relocs
= elfsec_data
->relocs
;
9389 bfd_size_type relsize
;
9390 relsize
= sec
->reloc_count
* sizeof (*relocs
);
9391 relocs
= bfd_alloc (sec
->owner
, relsize
);
9394 elfsec_data
->relocs
= relocs
;
9395 elfsec_data
->rela
.hdr
= bfd_zalloc (sec
->owner
,
9396 sizeof (Elf_Internal_Shdr
));
9397 if (elfsec_data
->rela
.hdr
== NULL
)
9399 elfsec_data
->rela
.hdr
->sh_size
= (sec
->reloc_count
9400 * sizeof (Elf64_External_Rela
));
9401 elfsec_data
->rela
.hdr
->sh_entsize
= sizeof (Elf64_External_Rela
);
9402 sec
->reloc_count
= 0;
9404 relocs
+= sec
->reloc_count
;
9405 sec
->reloc_count
+= count
;
9410 get_r2off (struct bfd_link_info
*info
,
9411 struct ppc_stub_hash_entry
*stub_entry
)
9413 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
9414 bfd_vma r2off
= htab
->stub_group
[stub_entry
->target_section
->id
].toc_off
;
9418 /* Support linking -R objects. Get the toc pointer from the
9421 asection
*opd
= stub_entry
->h
->elf
.root
.u
.def
.section
;
9422 bfd_vma opd_off
= stub_entry
->h
->elf
.root
.u
.def
.value
;
9424 if (strcmp (opd
->name
, ".opd") != 0
9425 || opd
->reloc_count
!= 0)
9427 info
->callbacks
->einfo (_("cannot find opd entry toc for %s\n"),
9428 stub_entry
->h
->elf
.root
.root
.string
);
9429 bfd_set_error (bfd_error_bad_value
);
9432 if (!bfd_get_section_contents (opd
->owner
, opd
, buf
, opd_off
+ 8, 8))
9434 r2off
= bfd_get_64 (opd
->owner
, buf
);
9435 r2off
-= elf_gp (info
->output_bfd
);
9437 r2off
-= htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
;
9442 ppc_build_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9444 struct ppc_stub_hash_entry
*stub_entry
;
9445 struct ppc_branch_hash_entry
*br_entry
;
9446 struct bfd_link_info
*info
;
9447 struct ppc_link_hash_table
*htab
;
9452 Elf_Internal_Rela
*r
;
9455 /* Massage our args to the form they really have. */
9456 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9459 htab
= ppc_hash_table (info
);
9463 /* Make a note of the offset within the stubs for this entry. */
9464 stub_entry
->stub_offset
= stub_entry
->stub_sec
->size
;
9465 loc
= stub_entry
->stub_sec
->contents
+ stub_entry
->stub_offset
;
9467 htab
->stub_count
[stub_entry
->stub_type
- 1] += 1;
9468 switch (stub_entry
->stub_type
)
9470 case ppc_stub_long_branch
:
9471 case ppc_stub_long_branch_r2off
:
9472 /* Branches are relative. This is where we are going to. */
9473 off
= dest
= (stub_entry
->target_value
9474 + stub_entry
->target_section
->output_offset
9475 + stub_entry
->target_section
->output_section
->vma
);
9477 /* And this is where we are coming from. */
9478 off
-= (stub_entry
->stub_offset
9479 + stub_entry
->stub_sec
->output_offset
9480 + stub_entry
->stub_sec
->output_section
->vma
);
9483 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9485 bfd_vma r2off
= get_r2off (info
, stub_entry
);
9489 htab
->stub_error
= TRUE
;
9492 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9495 if (PPC_HA (r2off
) != 0)
9498 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9501 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9505 bfd_put_32 (htab
->stub_bfd
, B_DOT
| (off
& 0x3fffffc), loc
);
9507 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9509 info
->callbacks
->einfo (_("long branch stub `%s' offset overflow\n"),
9510 stub_entry
->root
.string
);
9511 htab
->stub_error
= TRUE
;
9515 if (info
->emitrelocations
)
9517 r
= get_relocs (stub_entry
->stub_sec
, 1);
9520 r
->r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9521 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL24
);
9523 if (stub_entry
->h
!= NULL
)
9525 struct elf_link_hash_entry
**hashes
;
9526 unsigned long symndx
;
9527 struct ppc_link_hash_entry
*h
;
9529 hashes
= elf_sym_hashes (htab
->stub_bfd
);
9532 bfd_size_type hsize
;
9534 hsize
= (htab
->stub_globals
+ 1) * sizeof (*hashes
);
9535 hashes
= bfd_zalloc (htab
->stub_bfd
, hsize
);
9538 elf_sym_hashes (htab
->stub_bfd
) = hashes
;
9539 htab
->stub_globals
= 1;
9541 symndx
= htab
->stub_globals
++;
9543 hashes
[symndx
] = &h
->elf
;
9544 r
->r_info
= ELF64_R_INFO (symndx
, R_PPC64_REL24
);
9545 if (h
->oh
!= NULL
&& h
->oh
->is_func
)
9546 h
= ppc_follow_link (h
->oh
);
9547 if (h
->elf
.root
.u
.def
.section
!= stub_entry
->target_section
)
9548 /* H is an opd symbol. The addend must be zero. */
9552 off
= (h
->elf
.root
.u
.def
.value
9553 + h
->elf
.root
.u
.def
.section
->output_offset
9554 + h
->elf
.root
.u
.def
.section
->output_section
->vma
);
9561 case ppc_stub_plt_branch
:
9562 case ppc_stub_plt_branch_r2off
:
9563 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9564 stub_entry
->root
.string
+ 9,
9566 if (br_entry
== NULL
)
9568 info
->callbacks
->einfo (_("can't find branch stub `%s'\n"),
9569 stub_entry
->root
.string
);
9570 htab
->stub_error
= TRUE
;
9574 dest
= (stub_entry
->target_value
9575 + stub_entry
->target_section
->output_offset
9576 + stub_entry
->target_section
->output_section
->vma
);
9578 bfd_put_64 (htab
->brlt
->owner
, dest
,
9579 htab
->brlt
->contents
+ br_entry
->offset
);
9581 if (br_entry
->iter
== htab
->stub_iteration
)
9585 if (htab
->relbrlt
!= NULL
)
9587 /* Create a reloc for the branch lookup table entry. */
9588 Elf_Internal_Rela rela
;
9591 rela
.r_offset
= (br_entry
->offset
9592 + htab
->brlt
->output_offset
9593 + htab
->brlt
->output_section
->vma
);
9594 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9595 rela
.r_addend
= dest
;
9597 rl
= htab
->relbrlt
->contents
;
9598 rl
+= (htab
->relbrlt
->reloc_count
++
9599 * sizeof (Elf64_External_Rela
));
9600 bfd_elf64_swap_reloca_out (htab
->relbrlt
->owner
, &rela
, rl
);
9602 else if (info
->emitrelocations
)
9604 r
= get_relocs (htab
->brlt
, 1);
9607 /* brlt, being SEC_LINKER_CREATED does not go through the
9608 normal reloc processing. Symbols and offsets are not
9609 translated from input file to output file form, so
9610 set up the offset per the output file. */
9611 r
->r_offset
= (br_entry
->offset
9612 + htab
->brlt
->output_offset
9613 + htab
->brlt
->output_section
->vma
);
9614 r
->r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
9619 dest
= (br_entry
->offset
9620 + htab
->brlt
->output_offset
9621 + htab
->brlt
->output_section
->vma
);
9624 - elf_gp (htab
->brlt
->output_section
->owner
)
9625 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9627 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9629 info
->callbacks
->einfo
9630 (_("linkage table error against `%s'\n"),
9631 stub_entry
->root
.string
);
9632 bfd_set_error (bfd_error_bad_value
);
9633 htab
->stub_error
= TRUE
;
9637 if (info
->emitrelocations
)
9639 r
= get_relocs (stub_entry
->stub_sec
, 1 + (PPC_HA (off
) != 0));
9642 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9643 if (bfd_big_endian (info
->output_bfd
))
9645 if (stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
)
9647 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_DS
);
9648 r
[0].r_addend
= dest
;
9649 if (PPC_HA (off
) != 0)
9651 r
[0].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_HA
);
9652 r
[1].r_offset
= r
[0].r_offset
+ 4;
9653 r
[1].r_info
= ELF64_R_INFO (0, R_PPC64_TOC16_LO_DS
);
9654 r
[1].r_addend
= r
[0].r_addend
;
9658 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9660 if (PPC_HA (off
) != 0)
9663 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9665 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9670 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9675 bfd_vma r2off
= get_r2off (info
, stub_entry
);
9679 htab
->stub_error
= TRUE
;
9683 bfd_put_32 (htab
->stub_bfd
, STD_R2_40R1
, loc
);
9686 if (PPC_HA (off
) != 0)
9689 bfd_put_32 (htab
->stub_bfd
, ADDIS_R12_R2
| PPC_HA (off
), loc
);
9691 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R12
| PPC_LO (off
), loc
);
9696 bfd_put_32 (htab
->stub_bfd
, LD_R11_0R2
| PPC_LO (off
), loc
);
9700 if (PPC_HA (r2off
) != 0)
9703 bfd_put_32 (htab
->stub_bfd
, ADDIS_R2_R2
| PPC_HA (r2off
), loc
);
9706 bfd_put_32 (htab
->stub_bfd
, ADDI_R2_R2
| PPC_LO (r2off
), loc
);
9709 bfd_put_32 (htab
->stub_bfd
, MTCTR_R11
, loc
);
9711 bfd_put_32 (htab
->stub_bfd
, BCTR
, loc
);
9714 case ppc_stub_plt_call
:
9715 if (stub_entry
->h
!= NULL
9716 && stub_entry
->h
->is_func_descriptor
9717 && stub_entry
->h
->oh
!= NULL
)
9719 struct ppc_link_hash_entry
*fh
= ppc_follow_link (stub_entry
->h
->oh
);
9721 /* If the old-ABI "dot-symbol" is undefined make it weak so
9722 we don't get a link error from RELOC_FOR_GLOBAL_SYMBOL.
9723 FIXME: We used to define the symbol on one of the call
9724 stubs instead, which is why we test symbol section id
9725 against htab->top_id in various places. Likely all
9726 these checks could now disappear. */
9727 if (fh
->elf
.root
.type
== bfd_link_hash_undefined
)
9728 fh
->elf
.root
.type
= bfd_link_hash_undefweak
;
9729 /* Stop undo_symbol_twiddle changing it back to undefined. */
9730 fh
->was_undefined
= 0;
9733 /* Now build the stub. */
9734 dest
= stub_entry
->plt_ent
->plt
.offset
& ~1;
9735 if (dest
>= (bfd_vma
) -2)
9739 if (!htab
->elf
.dynamic_sections_created
9740 || stub_entry
->h
== NULL
9741 || stub_entry
->h
->elf
.dynindx
== -1)
9744 dest
+= plt
->output_offset
+ plt
->output_section
->vma
;
9746 if (stub_entry
->h
== NULL
9747 && (stub_entry
->plt_ent
->plt
.offset
& 1) == 0)
9749 Elf_Internal_Rela rela
;
9752 rela
.r_offset
= dest
;
9753 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
9754 rela
.r_addend
= (stub_entry
->target_value
9755 + stub_entry
->target_section
->output_offset
9756 + stub_entry
->target_section
->output_section
->vma
);
9758 rl
= (htab
->reliplt
->contents
9759 + (htab
->reliplt
->reloc_count
++
9760 * sizeof (Elf64_External_Rela
)));
9761 bfd_elf64_swap_reloca_out (info
->output_bfd
, &rela
, rl
);
9762 stub_entry
->plt_ent
->plt
.offset
|= 1;
9766 - elf_gp (plt
->output_section
->owner
)
9767 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9769 if (off
+ 0x80008000 > 0xffffffff || (off
& 7) != 0)
9771 info
->callbacks
->einfo
9772 (_("linkage table error against `%s'\n"),
9773 stub_entry
->h
!= NULL
9774 ? stub_entry
->h
->elf
.root
.root
.string
9776 bfd_set_error (bfd_error_bad_value
);
9777 htab
->stub_error
= TRUE
;
9782 if (info
->emitrelocations
)
9784 r
= get_relocs (stub_entry
->stub_sec
,
9785 (2 + (PPC_HA (off
) != 0)
9786 + (PPC_HA (off
+ 16) == PPC_HA (off
))));
9789 r
[0].r_offset
= loc
- stub_entry
->stub_sec
->contents
;
9790 if (bfd_big_endian (info
->output_bfd
))
9792 r
[0].r_addend
= dest
;
9794 if (stub_entry
->h
!= NULL
9795 && (stub_entry
->h
== htab
->tls_get_addr_fd
9796 || stub_entry
->h
== htab
->tls_get_addr
)
9797 && !htab
->no_tls_get_addr_opt
)
9798 p
= build_tls_get_addr_stub (htab
->stub_bfd
, loc
, off
, r
);
9800 p
= build_plt_stub (htab
->stub_bfd
, loc
, off
, r
);
9809 stub_entry
->stub_sec
->size
+= size
;
9811 if (htab
->emit_stub_syms
)
9813 struct elf_link_hash_entry
*h
;
9816 const char *const stub_str
[] = { "long_branch",
9817 "long_branch_r2off",
9822 len1
= strlen (stub_str
[stub_entry
->stub_type
- 1]);
9823 len2
= strlen (stub_entry
->root
.string
);
9824 name
= bfd_malloc (len1
+ len2
+ 2);
9827 memcpy (name
, stub_entry
->root
.string
, 9);
9828 memcpy (name
+ 9, stub_str
[stub_entry
->stub_type
- 1], len1
);
9829 memcpy (name
+ len1
+ 9, stub_entry
->root
.string
+ 8, len2
- 8 + 1);
9830 h
= elf_link_hash_lookup (&htab
->elf
, name
, TRUE
, FALSE
, FALSE
);
9833 if (h
->root
.type
== bfd_link_hash_new
)
9835 h
->root
.type
= bfd_link_hash_defined
;
9836 h
->root
.u
.def
.section
= stub_entry
->stub_sec
;
9837 h
->root
.u
.def
.value
= stub_entry
->stub_offset
;
9840 h
->ref_regular_nonweak
= 1;
9841 h
->forced_local
= 1;
9849 /* As above, but don't actually build the stub. Just bump offset so
9850 we know stub section sizes, and select plt_branch stubs where
9851 long_branch stubs won't do. */
9854 ppc_size_one_stub (struct bfd_hash_entry
*gen_entry
, void *in_arg
)
9856 struct ppc_stub_hash_entry
*stub_entry
;
9857 struct bfd_link_info
*info
;
9858 struct ppc_link_hash_table
*htab
;
9862 /* Massage our args to the form they really have. */
9863 stub_entry
= (struct ppc_stub_hash_entry
*) gen_entry
;
9866 htab
= ppc_hash_table (info
);
9870 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
9873 off
= stub_entry
->plt_ent
->plt
.offset
& ~(bfd_vma
) 1;
9874 if (off
>= (bfd_vma
) -2)
9877 if (!htab
->elf
.dynamic_sections_created
9878 || stub_entry
->h
== NULL
9879 || stub_entry
->h
->elf
.dynindx
== -1)
9881 off
+= (plt
->output_offset
9882 + plt
->output_section
->vma
9883 - elf_gp (plt
->output_section
->owner
)
9884 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9886 size
= PLT_CALL_STUB_SIZE
;
9887 if (PPC_HA (off
) == 0)
9889 if (PPC_HA (off
+ 16) != PPC_HA (off
))
9891 if (stub_entry
->h
!= NULL
9892 && (stub_entry
->h
== htab
->tls_get_addr_fd
9893 || stub_entry
->h
== htab
->tls_get_addr
)
9894 && !htab
->no_tls_get_addr_opt
)
9896 if (info
->emitrelocations
)
9898 stub_entry
->stub_sec
->reloc_count
9899 += 2 + (PPC_HA (off
) != 0) + (PPC_HA (off
+ 16) == PPC_HA (off
));
9900 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9905 /* ppc_stub_long_branch or ppc_stub_plt_branch, or their r2off
9909 off
= (stub_entry
->target_value
9910 + stub_entry
->target_section
->output_offset
9911 + stub_entry
->target_section
->output_section
->vma
);
9912 off
-= (stub_entry
->stub_sec
->size
9913 + stub_entry
->stub_sec
->output_offset
9914 + stub_entry
->stub_sec
->output_section
->vma
);
9916 /* Reset the stub type from the plt variant in case we now
9917 can reach with a shorter stub. */
9918 if (stub_entry
->stub_type
>= ppc_stub_plt_branch
)
9919 stub_entry
->stub_type
+= ppc_stub_long_branch
- ppc_stub_plt_branch
;
9922 if (stub_entry
->stub_type
== ppc_stub_long_branch_r2off
)
9924 r2off
= get_r2off (info
, stub_entry
);
9927 htab
->stub_error
= TRUE
;
9931 if (PPC_HA (r2off
) != 0)
9936 /* If the branch offset if too big, use a ppc_stub_plt_branch. */
9937 if (off
+ (1 << 25) >= (bfd_vma
) (1 << 26))
9939 struct ppc_branch_hash_entry
*br_entry
;
9941 br_entry
= ppc_branch_hash_lookup (&htab
->branch_hash_table
,
9942 stub_entry
->root
.string
+ 9,
9944 if (br_entry
== NULL
)
9946 info
->callbacks
->einfo (_("can't build branch stub `%s'\n"),
9947 stub_entry
->root
.string
);
9948 htab
->stub_error
= TRUE
;
9952 if (br_entry
->iter
!= htab
->stub_iteration
)
9954 br_entry
->iter
= htab
->stub_iteration
;
9955 br_entry
->offset
= htab
->brlt
->size
;
9956 htab
->brlt
->size
+= 8;
9958 if (htab
->relbrlt
!= NULL
)
9959 htab
->relbrlt
->size
+= sizeof (Elf64_External_Rela
);
9960 else if (info
->emitrelocations
)
9962 htab
->brlt
->reloc_count
+= 1;
9963 htab
->brlt
->flags
|= SEC_RELOC
;
9967 stub_entry
->stub_type
+= ppc_stub_plt_branch
- ppc_stub_long_branch
;
9968 off
= (br_entry
->offset
9969 + htab
->brlt
->output_offset
9970 + htab
->brlt
->output_section
->vma
9971 - elf_gp (htab
->brlt
->output_section
->owner
)
9972 - htab
->stub_group
[stub_entry
->id_sec
->id
].toc_off
);
9974 if (info
->emitrelocations
)
9976 stub_entry
->stub_sec
->reloc_count
+= 1 + (PPC_HA (off
) != 0);
9977 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
9980 if (stub_entry
->stub_type
!= ppc_stub_plt_branch_r2off
)
9983 if (PPC_HA (off
) != 0)
9989 if (PPC_HA (off
) != 0)
9992 if (PPC_HA (r2off
) != 0)
9996 else if (info
->emitrelocations
)
9998 stub_entry
->stub_sec
->reloc_count
+= 1;
9999 stub_entry
->stub_sec
->flags
|= SEC_RELOC
;
10003 stub_entry
->stub_sec
->size
+= size
;
10007 /* Set up various things so that we can make a list of input sections
10008 for each output section included in the link. Returns -1 on error,
10009 0 when no stubs will be needed, and 1 on success. */
10012 ppc64_elf_setup_section_lists
10013 (struct bfd_link_info
*info
,
10014 asection
*(*add_stub_section
) (const char *, asection
*),
10015 void (*layout_sections_again
) (void))
10018 int top_id
, top_index
, id
;
10020 asection
**input_list
;
10022 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10026 /* Stash our params away. */
10027 htab
->add_stub_section
= add_stub_section
;
10028 htab
->layout_sections_again
= layout_sections_again
;
10030 if (htab
->brlt
== NULL
)
10033 /* Find the top input section id. */
10034 for (input_bfd
= info
->input_bfds
, top_id
= 3;
10036 input_bfd
= input_bfd
->link_next
)
10038 for (section
= input_bfd
->sections
;
10040 section
= section
->next
)
10042 if (top_id
< section
->id
)
10043 top_id
= section
->id
;
10047 htab
->top_id
= top_id
;
10048 amt
= sizeof (struct map_stub
) * (top_id
+ 1);
10049 htab
->stub_group
= bfd_zmalloc (amt
);
10050 if (htab
->stub_group
== NULL
)
10053 /* Set toc_off for com, und, abs and ind sections. */
10054 for (id
= 0; id
< 3; id
++)
10055 htab
->stub_group
[id
].toc_off
= TOC_BASE_OFF
;
10057 /* We can't use output_bfd->section_count here to find the top output
10058 section index as some sections may have been removed, and
10059 strip_excluded_output_sections doesn't renumber the indices. */
10060 for (section
= info
->output_bfd
->sections
, top_index
= 0;
10062 section
= section
->next
)
10064 if (top_index
< section
->index
)
10065 top_index
= section
->index
;
10068 htab
->top_index
= top_index
;
10069 amt
= sizeof (asection
*) * (top_index
+ 1);
10070 input_list
= bfd_zmalloc (amt
);
10071 htab
->input_list
= input_list
;
10072 if (input_list
== NULL
)
10078 /* Set up for first pass at multitoc partitioning. */
10081 ppc64_elf_start_multitoc_partition (struct bfd_link_info
*info
)
10083 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10085 elf_gp (info
->output_bfd
) = ppc64_elf_toc (info
->output_bfd
);
10086 htab
->toc_curr
= elf_gp (info
->output_bfd
);
10087 htab
->toc_bfd
= NULL
;
10088 htab
->toc_first_sec
= NULL
;
10091 /* The linker repeatedly calls this function for each TOC input section
10092 and linker generated GOT section. Group input bfds such that the toc
10093 within a group is less than 64k in size. */
10096 ppc64_elf_next_toc_section (struct bfd_link_info
*info
, asection
*isec
)
10098 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10099 bfd_vma addr
, off
, limit
;
10104 if (!htab
->second_toc_pass
)
10106 /* Keep track of the first .toc or .got section for this input bfd. */
10107 if (htab
->toc_bfd
!= isec
->owner
)
10109 htab
->toc_bfd
= isec
->owner
;
10110 htab
->toc_first_sec
= isec
;
10113 addr
= isec
->output_offset
+ isec
->output_section
->vma
;
10114 off
= addr
- htab
->toc_curr
;
10115 limit
= 0x80008000;
10116 if (ppc64_elf_tdata (isec
->owner
)->has_small_toc_reloc
)
10118 if (off
+ isec
->size
> limit
)
10120 addr
= (htab
->toc_first_sec
->output_offset
10121 + htab
->toc_first_sec
->output_section
->vma
);
10122 htab
->toc_curr
= addr
;
10125 /* toc_curr is the base address of this toc group. Set elf_gp
10126 for the input section to be the offset relative to the
10127 output toc base plus 0x8000. Making the input elf_gp an
10128 offset allows us to move the toc as a whole without
10129 recalculating input elf_gp. */
10130 off
= htab
->toc_curr
- elf_gp (isec
->output_section
->owner
);
10131 off
+= TOC_BASE_OFF
;
10133 /* Die if someone uses a linker script that doesn't keep input
10134 file .toc and .got together. */
10135 if (elf_gp (isec
->owner
) != 0
10136 && elf_gp (isec
->owner
) != off
)
10139 elf_gp (isec
->owner
) = off
;
10143 /* During the second pass toc_first_sec points to the start of
10144 a toc group, and toc_curr is used to track the old elf_gp.
10145 We use toc_bfd to ensure we only look at each bfd once. */
10146 if (htab
->toc_bfd
== isec
->owner
)
10148 htab
->toc_bfd
= isec
->owner
;
10150 if (htab
->toc_first_sec
== NULL
10151 || htab
->toc_curr
!= elf_gp (isec
->owner
))
10153 htab
->toc_curr
= elf_gp (isec
->owner
);
10154 htab
->toc_first_sec
= isec
;
10156 addr
= (htab
->toc_first_sec
->output_offset
10157 + htab
->toc_first_sec
->output_section
->vma
);
10158 off
= addr
- elf_gp (isec
->output_section
->owner
) + TOC_BASE_OFF
;
10159 elf_gp (isec
->owner
) = off
;
10164 /* Called via elf_link_hash_traverse to merge GOT entries for global
10168 merge_global_got (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
10170 if (h
->root
.type
== bfd_link_hash_indirect
)
10173 merge_got_entries (&h
->got
.glist
);
10178 /* Called via elf_link_hash_traverse to allocate GOT entries for global
10182 reallocate_got (struct elf_link_hash_entry
*h
, void *inf
)
10184 struct got_entry
*gent
;
10186 if (h
->root
.type
== bfd_link_hash_indirect
)
10189 for (gent
= h
->got
.glist
; gent
!= NULL
; gent
= gent
->next
)
10190 if (!gent
->is_indirect
)
10191 allocate_got (h
, (struct bfd_link_info
*) inf
, gent
);
10195 /* Called on the first multitoc pass after the last call to
10196 ppc64_elf_next_toc_section. This function removes duplicate GOT
10200 ppc64_elf_layout_multitoc (struct bfd_link_info
*info
)
10202 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10203 struct bfd
*ibfd
, *ibfd2
;
10204 bfd_boolean done_something
;
10206 htab
->multi_toc_needed
= htab
->toc_curr
!= elf_gp (info
->output_bfd
);
10208 if (!htab
->do_multi_toc
)
10211 /* Merge global sym got entries within a toc group. */
10212 elf_link_hash_traverse (&htab
->elf
, merge_global_got
, info
);
10214 /* And tlsld_got. */
10215 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10217 struct got_entry
*ent
, *ent2
;
10219 if (!is_ppc64_elf (ibfd
))
10222 ent
= ppc64_tlsld_got (ibfd
);
10223 if (!ent
->is_indirect
10224 && ent
->got
.offset
!= (bfd_vma
) -1)
10226 for (ibfd2
= ibfd
->link_next
; ibfd2
!= NULL
; ibfd2
= ibfd2
->link_next
)
10228 if (!is_ppc64_elf (ibfd2
))
10231 ent2
= ppc64_tlsld_got (ibfd2
);
10232 if (!ent2
->is_indirect
10233 && ent2
->got
.offset
!= (bfd_vma
) -1
10234 && elf_gp (ibfd2
) == elf_gp (ibfd
))
10236 ent2
->is_indirect
= TRUE
;
10237 ent2
->got
.ent
= ent
;
10243 /* Zap sizes of got sections. */
10244 htab
->reliplt
->rawsize
= htab
->reliplt
->size
;
10245 htab
->reliplt
->size
-= htab
->got_reli_size
;
10246 htab
->got_reli_size
= 0;
10248 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10250 asection
*got
, *relgot
;
10252 if (!is_ppc64_elf (ibfd
))
10255 got
= ppc64_elf_tdata (ibfd
)->got
;
10258 got
->rawsize
= got
->size
;
10260 relgot
= ppc64_elf_tdata (ibfd
)->relgot
;
10261 relgot
->rawsize
= relgot
->size
;
10266 /* Now reallocate the got, local syms first. We don't need to
10267 allocate section contents again since we never increase size. */
10268 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10270 struct got_entry
**lgot_ents
;
10271 struct got_entry
**end_lgot_ents
;
10272 struct plt_entry
**local_plt
;
10273 struct plt_entry
**end_local_plt
;
10274 unsigned char *lgot_masks
;
10275 bfd_size_type locsymcount
;
10276 Elf_Internal_Shdr
*symtab_hdr
;
10277 asection
*s
, *srel
;
10279 if (!is_ppc64_elf (ibfd
))
10282 lgot_ents
= elf_local_got_ents (ibfd
);
10286 symtab_hdr
= &elf_symtab_hdr (ibfd
);
10287 locsymcount
= symtab_hdr
->sh_info
;
10288 end_lgot_ents
= lgot_ents
+ locsymcount
;
10289 local_plt
= (struct plt_entry
**) end_lgot_ents
;
10290 end_local_plt
= local_plt
+ locsymcount
;
10291 lgot_masks
= (unsigned char *) end_local_plt
;
10292 s
= ppc64_elf_tdata (ibfd
)->got
;
10293 srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10294 for (; lgot_ents
< end_lgot_ents
; ++lgot_ents
, ++lgot_masks
)
10296 struct got_entry
*ent
;
10298 for (ent
= *lgot_ents
; ent
!= NULL
; ent
= ent
->next
)
10300 unsigned int num
= 1;
10301 ent
->got
.offset
= s
->size
;
10302 if ((ent
->tls_type
& *lgot_masks
& TLS_GD
) != 0)
10304 s
->size
+= num
* 8;
10306 srel
->size
+= num
* sizeof (Elf64_External_Rela
);
10307 else if ((*lgot_masks
& PLT_IFUNC
) != 0)
10309 htab
->reliplt
->size
10310 += num
* sizeof (Elf64_External_Rela
);
10311 htab
->got_reli_size
10312 += num
* sizeof (Elf64_External_Rela
);
10318 elf_link_hash_traverse (&htab
->elf
, reallocate_got
, info
);
10320 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10322 struct got_entry
*ent
;
10324 if (!is_ppc64_elf (ibfd
))
10327 ent
= ppc64_tlsld_got (ibfd
);
10328 if (!ent
->is_indirect
10329 && ent
->got
.offset
!= (bfd_vma
) -1)
10331 asection
*s
= ppc64_elf_tdata (ibfd
)->got
;
10332 ent
->got
.offset
= s
->size
;
10336 asection
*srel
= ppc64_elf_tdata (ibfd
)->relgot
;
10337 srel
->size
+= sizeof (Elf64_External_Rela
);
10342 done_something
= htab
->reliplt
->rawsize
!= htab
->reliplt
->size
;
10343 if (!done_something
)
10344 for (ibfd
= info
->input_bfds
; ibfd
!= NULL
; ibfd
= ibfd
->link_next
)
10348 if (!is_ppc64_elf (ibfd
))
10351 got
= ppc64_elf_tdata (ibfd
)->got
;
10354 done_something
= got
->rawsize
!= got
->size
;
10355 if (done_something
)
10360 if (done_something
)
10361 (*htab
->layout_sections_again
) ();
10363 /* Set up for second pass over toc sections to recalculate elf_gp
10364 on input sections. */
10365 htab
->toc_bfd
= NULL
;
10366 htab
->toc_first_sec
= NULL
;
10367 htab
->second_toc_pass
= TRUE
;
10368 return done_something
;
10371 /* Called after second pass of multitoc partitioning. */
10374 ppc64_elf_finish_multitoc_partition (struct bfd_link_info
*info
)
10376 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10378 /* After the second pass, toc_curr tracks the TOC offset used
10379 for code sections below in ppc64_elf_next_input_section. */
10380 htab
->toc_curr
= TOC_BASE_OFF
;
10383 /* No toc references were found in ISEC. If the code in ISEC makes no
10384 calls, then there's no need to use toc adjusting stubs when branching
10385 into ISEC. Actually, indirect calls from ISEC are OK as they will
10386 load r2. Returns -1 on error, 0 for no stub needed, 1 for stub
10387 needed, and 2 if a cyclical call-graph was found but no other reason
10388 for a stub was detected. If called from the top level, a return of
10389 2 means the same as a return of 0. */
10392 toc_adjusting_stub_needed (struct bfd_link_info
*info
, asection
*isec
)
10396 /* Mark this section as checked. */
10397 isec
->call_check_done
= 1;
10399 /* We know none of our code bearing sections will need toc stubs. */
10400 if ((isec
->flags
& SEC_LINKER_CREATED
) != 0)
10403 if (isec
->size
== 0)
10406 if (isec
->output_section
== NULL
)
10410 if (isec
->reloc_count
!= 0)
10412 Elf_Internal_Rela
*relstart
, *rel
;
10413 Elf_Internal_Sym
*local_syms
;
10414 struct ppc_link_hash_table
*htab
;
10416 relstart
= _bfd_elf_link_read_relocs (isec
->owner
, isec
, NULL
, NULL
,
10417 info
->keep_memory
);
10418 if (relstart
== NULL
)
10421 /* Look for branches to outside of this section. */
10423 htab
= ppc_hash_table (info
);
10427 for (rel
= relstart
; rel
< relstart
+ isec
->reloc_count
; ++rel
)
10429 enum elf_ppc64_reloc_type r_type
;
10430 unsigned long r_symndx
;
10431 struct elf_link_hash_entry
*h
;
10432 struct ppc_link_hash_entry
*eh
;
10433 Elf_Internal_Sym
*sym
;
10435 struct _opd_sec_data
*opd
;
10439 r_type
= ELF64_R_TYPE (rel
->r_info
);
10440 if (r_type
!= R_PPC64_REL24
10441 && r_type
!= R_PPC64_REL14
10442 && r_type
!= R_PPC64_REL14_BRTAKEN
10443 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10446 r_symndx
= ELF64_R_SYM (rel
->r_info
);
10447 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
, r_symndx
,
10454 /* Calls to dynamic lib functions go through a plt call stub
10456 eh
= (struct ppc_link_hash_entry
*) h
;
10458 && (eh
->elf
.plt
.plist
!= NULL
10460 && ppc_follow_link (eh
->oh
)->elf
.plt
.plist
!= NULL
)))
10466 if (sym_sec
== NULL
)
10467 /* Ignore other undefined symbols. */
10470 /* Assume branches to other sections not included in the
10471 link need stubs too, to cover -R and absolute syms. */
10472 if (sym_sec
->output_section
== NULL
)
10479 sym_value
= sym
->st_value
;
10482 if (h
->root
.type
!= bfd_link_hash_defined
10483 && h
->root
.type
!= bfd_link_hash_defweak
)
10485 sym_value
= h
->root
.u
.def
.value
;
10487 sym_value
+= rel
->r_addend
;
10489 /* If this branch reloc uses an opd sym, find the code section. */
10490 opd
= get_opd_info (sym_sec
);
10493 if (h
== NULL
&& opd
->adjust
!= NULL
)
10497 adjust
= opd
->adjust
[sym
->st_value
/ 8];
10499 /* Assume deleted functions won't ever be called. */
10501 sym_value
+= adjust
;
10504 dest
= opd_entry_value (sym_sec
, sym_value
, &sym_sec
, NULL
);
10505 if (dest
== (bfd_vma
) -1)
10510 + sym_sec
->output_offset
10511 + sym_sec
->output_section
->vma
);
10513 /* Ignore branch to self. */
10514 if (sym_sec
== isec
)
10517 /* If the called function uses the toc, we need a stub. */
10518 if (sym_sec
->has_toc_reloc
10519 || sym_sec
->makes_toc_func_call
)
10525 /* Assume any branch that needs a long branch stub might in fact
10526 need a plt_branch stub. A plt_branch stub uses r2. */
10527 else if (dest
- (isec
->output_offset
10528 + isec
->output_section
->vma
10529 + rel
->r_offset
) + (1 << 25) >= (2 << 25))
10535 /* If calling back to a section in the process of being
10536 tested, we can't say for sure that no toc adjusting stubs
10537 are needed, so don't return zero. */
10538 else if (sym_sec
->call_check_in_progress
)
10541 /* Branches to another section that itself doesn't have any TOC
10542 references are OK. Recursively call ourselves to check. */
10543 else if (!sym_sec
->call_check_done
)
10547 /* Mark current section as indeterminate, so that other
10548 sections that call back to current won't be marked as
10550 isec
->call_check_in_progress
= 1;
10551 recur
= toc_adjusting_stub_needed (info
, sym_sec
);
10552 isec
->call_check_in_progress
= 0;
10563 if (local_syms
!= NULL
10564 && (elf_symtab_hdr (isec
->owner
).contents
10565 != (unsigned char *) local_syms
))
10567 if (elf_section_data (isec
)->relocs
!= relstart
)
10572 && isec
->map_head
.s
!= NULL
10573 && (strcmp (isec
->output_section
->name
, ".init") == 0
10574 || strcmp (isec
->output_section
->name
, ".fini") == 0))
10576 if (isec
->map_head
.s
->has_toc_reloc
10577 || isec
->map_head
.s
->makes_toc_func_call
)
10579 else if (!isec
->map_head
.s
->call_check_done
)
10582 isec
->call_check_in_progress
= 1;
10583 recur
= toc_adjusting_stub_needed (info
, isec
->map_head
.s
);
10584 isec
->call_check_in_progress
= 0;
10591 isec
->makes_toc_func_call
= 1;
10596 /* The linker repeatedly calls this function for each input section,
10597 in the order that input sections are linked into output sections.
10598 Build lists of input sections to determine groupings between which
10599 we may insert linker stubs. */
10602 ppc64_elf_next_input_section (struct bfd_link_info
*info
, asection
*isec
)
10604 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10609 if ((isec
->output_section
->flags
& SEC_CODE
) != 0
10610 && isec
->output_section
->index
<= htab
->top_index
)
10612 asection
**list
= htab
->input_list
+ isec
->output_section
->index
;
10613 /* Steal the link_sec pointer for our list. */
10614 #define PREV_SEC(sec) (htab->stub_group[(sec)->id].link_sec)
10615 /* This happens to make the list in reverse order,
10616 which is what we want. */
10617 PREV_SEC (isec
) = *list
;
10621 if (htab
->multi_toc_needed
)
10623 /* If a code section has a function that uses the TOC then we need
10624 to use the right TOC (obviously). Also, make sure that .opd gets
10625 the correct TOC value for R_PPC64_TOC relocs that don't have or
10626 can't find their function symbol (shouldn't ever happen now).
10627 Also specially treat .fixup for the linux kernel. .fixup
10628 contains branches, but only back to the function that hit an
10630 if (isec
->has_toc_reloc
10631 || (isec
->flags
& SEC_CODE
) == 0
10632 || strcmp (isec
->name
, ".fixup") == 0)
10634 if (elf_gp (isec
->owner
) != 0)
10635 htab
->toc_curr
= elf_gp (isec
->owner
);
10639 if (!isec
->call_check_done
10640 && toc_adjusting_stub_needed (info
, isec
) < 0)
10642 /* If we make a local call from this section, ie. a branch
10643 without a following nop, then we have no place to put a
10644 toc restoring insn. We must use the same toc group as
10646 Testing makes_toc_func_call actually tests for *any*
10647 calls to functions that need a good toc pointer. A more
10648 precise test would be better, as this one will set
10649 incorrect values for pasted .init/.fini fragments.
10650 (Fixed later in check_pasted_section.) */
10651 if (isec
->makes_toc_func_call
10652 && elf_gp (isec
->owner
) != 0)
10653 htab
->toc_curr
= elf_gp (isec
->owner
);
10657 /* Functions that don't use the TOC can belong in any TOC group.
10658 Use the last TOC base. */
10659 htab
->stub_group
[isec
->id
].toc_off
= htab
->toc_curr
;
10663 /* Check that all .init and .fini sections use the same toc, if they
10664 have toc relocs. */
10667 check_pasted_section (struct bfd_link_info
*info
, const char *name
)
10669 asection
*o
= bfd_get_section_by_name (info
->output_bfd
, name
);
10673 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10674 bfd_vma toc_off
= 0;
10677 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10678 if (i
->has_toc_reloc
)
10681 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10682 else if (toc_off
!= htab
->stub_group
[i
->id
].toc_off
)
10687 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10688 if (i
->makes_toc_func_call
)
10690 toc_off
= htab
->stub_group
[i
->id
].toc_off
;
10694 /* Make sure the whole pasted function uses the same toc offset. */
10696 for (i
= o
->map_head
.s
; i
!= NULL
; i
= i
->map_head
.s
)
10697 htab
->stub_group
[i
->id
].toc_off
= toc_off
;
10703 ppc64_elf_check_init_fini (struct bfd_link_info
*info
)
10705 return (check_pasted_section (info
, ".init")
10706 & check_pasted_section (info
, ".fini"));
10709 /* See whether we can group stub sections together. Grouping stub
10710 sections may result in fewer stubs. More importantly, we need to
10711 put all .init* and .fini* stubs at the beginning of the .init or
10712 .fini output sections respectively, because glibc splits the
10713 _init and _fini functions into multiple parts. Putting a stub in
10714 the middle of a function is not a good idea. */
10717 group_sections (struct ppc_link_hash_table
*htab
,
10718 bfd_size_type stub_group_size
,
10719 bfd_boolean stubs_always_before_branch
)
10722 bfd_size_type stub14_group_size
;
10723 bfd_boolean suppress_size_errors
;
10725 suppress_size_errors
= FALSE
;
10726 stub14_group_size
= stub_group_size
;
10727 if (stub_group_size
== 1)
10729 /* Default values. */
10730 if (stubs_always_before_branch
)
10732 stub_group_size
= 0x1e00000;
10733 stub14_group_size
= 0x7800;
10737 stub_group_size
= 0x1c00000;
10738 stub14_group_size
= 0x7000;
10740 suppress_size_errors
= TRUE
;
10743 list
= htab
->input_list
+ htab
->top_index
;
10746 asection
*tail
= *list
;
10747 while (tail
!= NULL
)
10751 bfd_size_type total
;
10752 bfd_boolean big_sec
;
10756 total
= tail
->size
;
10757 big_sec
= total
> (ppc64_elf_section_data (tail
) != NULL
10758 && ppc64_elf_section_data (tail
)->has_14bit_branch
10759 ? stub14_group_size
: stub_group_size
);
10760 if (big_sec
&& !suppress_size_errors
)
10761 (*_bfd_error_handler
) (_("%B section %A exceeds stub group size"),
10762 tail
->owner
, tail
);
10763 curr_toc
= htab
->stub_group
[tail
->id
].toc_off
;
10765 while ((prev
= PREV_SEC (curr
)) != NULL
10766 && ((total
+= curr
->output_offset
- prev
->output_offset
)
10767 < (ppc64_elf_section_data (prev
) != NULL
10768 && ppc64_elf_section_data (prev
)->has_14bit_branch
10769 ? stub14_group_size
: stub_group_size
))
10770 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10773 /* OK, the size from the start of CURR to the end is less
10774 than stub_group_size and thus can be handled by one stub
10775 section. (or the tail section is itself larger than
10776 stub_group_size, in which case we may be toast.) We
10777 should really be keeping track of the total size of stubs
10778 added here, as stubs contribute to the final output
10779 section size. That's a little tricky, and this way will
10780 only break if stubs added make the total size more than
10781 2^25, ie. for the default stub_group_size, if stubs total
10782 more than 2097152 bytes, or nearly 75000 plt call stubs. */
10785 prev
= PREV_SEC (tail
);
10786 /* Set up this stub group. */
10787 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10789 while (tail
!= curr
&& (tail
= prev
) != NULL
);
10791 /* But wait, there's more! Input sections up to stub_group_size
10792 bytes before the stub section can be handled by it too.
10793 Don't do this if we have a really large section after the
10794 stubs, as adding more stubs increases the chance that
10795 branches may not reach into the stub section. */
10796 if (!stubs_always_before_branch
&& !big_sec
)
10799 while (prev
!= NULL
10800 && ((total
+= tail
->output_offset
- prev
->output_offset
)
10801 < (ppc64_elf_section_data (prev
) != NULL
10802 && ppc64_elf_section_data (prev
)->has_14bit_branch
10803 ? stub14_group_size
: stub_group_size
))
10804 && htab
->stub_group
[prev
->id
].toc_off
== curr_toc
)
10807 prev
= PREV_SEC (tail
);
10808 htab
->stub_group
[tail
->id
].link_sec
= curr
;
10814 while (list
-- != htab
->input_list
);
10815 free (htab
->input_list
);
10819 /* Determine and set the size of the stub section for a final link.
10821 The basic idea here is to examine all the relocations looking for
10822 PC-relative calls to a target that is unreachable with a "bl"
10826 ppc64_elf_size_stubs (struct bfd_link_info
*info
, bfd_signed_vma group_size
)
10828 bfd_size_type stub_group_size
;
10829 bfd_boolean stubs_always_before_branch
;
10830 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
10835 stubs_always_before_branch
= group_size
< 0;
10836 if (group_size
< 0)
10837 stub_group_size
= -group_size
;
10839 stub_group_size
= group_size
;
10841 group_sections (htab
, stub_group_size
, stubs_always_before_branch
);
10846 unsigned int bfd_indx
;
10847 asection
*stub_sec
;
10849 htab
->stub_iteration
+= 1;
10851 for (input_bfd
= info
->input_bfds
, bfd_indx
= 0;
10853 input_bfd
= input_bfd
->link_next
, bfd_indx
++)
10855 Elf_Internal_Shdr
*symtab_hdr
;
10857 Elf_Internal_Sym
*local_syms
= NULL
;
10859 if (!is_ppc64_elf (input_bfd
))
10862 /* We'll need the symbol table in a second. */
10863 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
10864 if (symtab_hdr
->sh_info
== 0)
10867 /* Walk over each section attached to the input bfd. */
10868 for (section
= input_bfd
->sections
;
10870 section
= section
->next
)
10872 Elf_Internal_Rela
*internal_relocs
, *irelaend
, *irela
;
10874 /* If there aren't any relocs, then there's nothing more
10876 if ((section
->flags
& SEC_RELOC
) == 0
10877 || (section
->flags
& SEC_ALLOC
) == 0
10878 || (section
->flags
& SEC_LOAD
) == 0
10879 || (section
->flags
& SEC_CODE
) == 0
10880 || section
->reloc_count
== 0)
10883 /* If this section is a link-once section that will be
10884 discarded, then don't create any stubs. */
10885 if (section
->output_section
== NULL
10886 || section
->output_section
->owner
!= info
->output_bfd
)
10889 /* Get the relocs. */
10891 = _bfd_elf_link_read_relocs (input_bfd
, section
, NULL
, NULL
,
10892 info
->keep_memory
);
10893 if (internal_relocs
== NULL
)
10894 goto error_ret_free_local
;
10896 /* Now examine each relocation. */
10897 irela
= internal_relocs
;
10898 irelaend
= irela
+ section
->reloc_count
;
10899 for (; irela
< irelaend
; irela
++)
10901 enum elf_ppc64_reloc_type r_type
;
10902 unsigned int r_indx
;
10903 enum ppc_stub_type stub_type
;
10904 struct ppc_stub_hash_entry
*stub_entry
;
10905 asection
*sym_sec
, *code_sec
;
10906 bfd_vma sym_value
, code_value
;
10907 bfd_vma destination
;
10908 bfd_boolean ok_dest
;
10909 struct ppc_link_hash_entry
*hash
;
10910 struct ppc_link_hash_entry
*fdh
;
10911 struct elf_link_hash_entry
*h
;
10912 Elf_Internal_Sym
*sym
;
10914 const asection
*id_sec
;
10915 struct _opd_sec_data
*opd
;
10916 struct plt_entry
*plt_ent
;
10918 r_type
= ELF64_R_TYPE (irela
->r_info
);
10919 r_indx
= ELF64_R_SYM (irela
->r_info
);
10921 if (r_type
>= R_PPC64_max
)
10923 bfd_set_error (bfd_error_bad_value
);
10924 goto error_ret_free_internal
;
10927 /* Only look for stubs on branch instructions. */
10928 if (r_type
!= R_PPC64_REL24
10929 && r_type
!= R_PPC64_REL14
10930 && r_type
!= R_PPC64_REL14_BRTAKEN
10931 && r_type
!= R_PPC64_REL14_BRNTAKEN
)
10934 /* Now determine the call target, its name, value,
10936 if (!get_sym_h (&h
, &sym
, &sym_sec
, NULL
, &local_syms
,
10937 r_indx
, input_bfd
))
10938 goto error_ret_free_internal
;
10939 hash
= (struct ppc_link_hash_entry
*) h
;
10946 sym_value
= sym
->st_value
;
10949 else if (hash
->elf
.root
.type
== bfd_link_hash_defined
10950 || hash
->elf
.root
.type
== bfd_link_hash_defweak
)
10952 sym_value
= hash
->elf
.root
.u
.def
.value
;
10953 if (sym_sec
->output_section
!= NULL
)
10956 else if (hash
->elf
.root
.type
== bfd_link_hash_undefweak
10957 || hash
->elf
.root
.type
== bfd_link_hash_undefined
)
10959 /* Recognise an old ABI func code entry sym, and
10960 use the func descriptor sym instead if it is
10962 if (hash
->elf
.root
.root
.string
[0] == '.'
10963 && (fdh
= lookup_fdh (hash
, htab
)) != NULL
)
10965 if (fdh
->elf
.root
.type
== bfd_link_hash_defined
10966 || fdh
->elf
.root
.type
== bfd_link_hash_defweak
)
10968 sym_sec
= fdh
->elf
.root
.u
.def
.section
;
10969 sym_value
= fdh
->elf
.root
.u
.def
.value
;
10970 if (sym_sec
->output_section
!= NULL
)
10979 bfd_set_error (bfd_error_bad_value
);
10980 goto error_ret_free_internal
;
10986 sym_value
+= irela
->r_addend
;
10987 destination
= (sym_value
10988 + sym_sec
->output_offset
10989 + sym_sec
->output_section
->vma
);
10992 code_sec
= sym_sec
;
10993 code_value
= sym_value
;
10994 opd
= get_opd_info (sym_sec
);
10999 if (hash
== NULL
&& opd
->adjust
!= NULL
)
11001 long adjust
= opd
->adjust
[sym_value
/ 8];
11004 code_value
+= adjust
;
11005 sym_value
+= adjust
;
11007 dest
= opd_entry_value (sym_sec
, sym_value
,
11008 &code_sec
, &code_value
);
11009 if (dest
!= (bfd_vma
) -1)
11011 destination
= dest
;
11014 /* Fixup old ABI sym to point at code
11016 hash
->elf
.root
.type
= bfd_link_hash_defweak
;
11017 hash
->elf
.root
.u
.def
.section
= code_sec
;
11018 hash
->elf
.root
.u
.def
.value
= code_value
;
11023 /* Determine what (if any) linker stub is needed. */
11025 stub_type
= ppc_type_of_stub (section
, irela
, &hash
,
11026 &plt_ent
, destination
);
11028 if (stub_type
!= ppc_stub_plt_call
)
11030 /* Check whether we need a TOC adjusting stub.
11031 Since the linker pastes together pieces from
11032 different object files when creating the
11033 _init and _fini functions, it may be that a
11034 call to what looks like a local sym is in
11035 fact a call needing a TOC adjustment. */
11036 if (code_sec
!= NULL
11037 && code_sec
->output_section
!= NULL
11038 && (htab
->stub_group
[code_sec
->id
].toc_off
11039 != htab
->stub_group
[section
->id
].toc_off
)
11040 && (code_sec
->has_toc_reloc
11041 || code_sec
->makes_toc_func_call
))
11042 stub_type
= ppc_stub_long_branch_r2off
;
11045 if (stub_type
== ppc_stub_none
)
11048 /* __tls_get_addr calls might be eliminated. */
11049 if (stub_type
!= ppc_stub_plt_call
11051 && (hash
== htab
->tls_get_addr
11052 || hash
== htab
->tls_get_addr_fd
)
11053 && section
->has_tls_reloc
11054 && irela
!= internal_relocs
)
11056 /* Get tls info. */
11057 unsigned char *tls_mask
;
11059 if (!get_tls_mask (&tls_mask
, NULL
, NULL
, &local_syms
,
11060 irela
- 1, input_bfd
))
11061 goto error_ret_free_internal
;
11062 if (*tls_mask
!= 0)
11066 /* Support for grouping stub sections. */
11067 id_sec
= htab
->stub_group
[section
->id
].link_sec
;
11069 /* Get the name of this stub. */
11070 stub_name
= ppc_stub_name (id_sec
, sym_sec
, hash
, irela
);
11072 goto error_ret_free_internal
;
11074 stub_entry
= ppc_stub_hash_lookup (&htab
->stub_hash_table
,
11075 stub_name
, FALSE
, FALSE
);
11076 if (stub_entry
!= NULL
)
11078 /* The proper stub has already been created. */
11083 stub_entry
= ppc_add_stub (stub_name
, section
, info
);
11084 if (stub_entry
== NULL
)
11087 error_ret_free_internal
:
11088 if (elf_section_data (section
)->relocs
== NULL
)
11089 free (internal_relocs
);
11090 error_ret_free_local
:
11091 if (local_syms
!= NULL
11092 && (symtab_hdr
->contents
11093 != (unsigned char *) local_syms
))
11098 stub_entry
->stub_type
= stub_type
;
11099 if (stub_type
!= ppc_stub_plt_call
)
11101 stub_entry
->target_value
= code_value
;
11102 stub_entry
->target_section
= code_sec
;
11106 stub_entry
->target_value
= sym_value
;
11107 stub_entry
->target_section
= sym_sec
;
11109 stub_entry
->h
= hash
;
11110 stub_entry
->plt_ent
= plt_ent
;
11111 stub_entry
->addend
= irela
->r_addend
;
11113 if (stub_entry
->h
!= NULL
)
11114 htab
->stub_globals
+= 1;
11117 /* We're done with the internal relocs, free them. */
11118 if (elf_section_data (section
)->relocs
!= internal_relocs
)
11119 free (internal_relocs
);
11122 if (local_syms
!= NULL
11123 && symtab_hdr
->contents
!= (unsigned char *) local_syms
)
11125 if (!info
->keep_memory
)
11128 symtab_hdr
->contents
= (unsigned char *) local_syms
;
11132 /* We may have added some stubs. Find out the new size of the
11134 for (stub_sec
= htab
->stub_bfd
->sections
;
11136 stub_sec
= stub_sec
->next
)
11137 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11139 stub_sec
->rawsize
= stub_sec
->size
;
11140 stub_sec
->size
= 0;
11141 stub_sec
->reloc_count
= 0;
11142 stub_sec
->flags
&= ~SEC_RELOC
;
11145 htab
->brlt
->size
= 0;
11146 htab
->brlt
->reloc_count
= 0;
11147 htab
->brlt
->flags
&= ~SEC_RELOC
;
11148 if (htab
->relbrlt
!= NULL
)
11149 htab
->relbrlt
->size
= 0;
11151 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_size_one_stub
, info
);
11153 if (info
->emitrelocations
11154 && htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11156 htab
->glink
->reloc_count
= 1;
11157 htab
->glink
->flags
|= SEC_RELOC
;
11160 for (stub_sec
= htab
->stub_bfd
->sections
;
11162 stub_sec
= stub_sec
->next
)
11163 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11164 && stub_sec
->rawsize
!= stub_sec
->size
)
11167 /* Exit from this loop when no stubs have been added, and no stubs
11168 have changed size. */
11169 if (stub_sec
== NULL
)
11172 /* Ask the linker to do its stuff. */
11173 (*htab
->layout_sections_again
) ();
11176 /* It would be nice to strip htab->brlt from the output if the
11177 section is empty, but it's too late. If we strip sections here,
11178 the dynamic symbol table is corrupted since the section symbol
11179 for the stripped section isn't written. */
11184 /* Called after we have determined section placement. If sections
11185 move, we'll be called again. Provide a value for TOCstart. */
11188 ppc64_elf_toc (bfd
*obfd
)
11193 /* The TOC consists of sections .got, .toc, .tocbss, .plt in that
11194 order. The TOC starts where the first of these sections starts. */
11195 s
= bfd_get_section_by_name (obfd
, ".got");
11196 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11197 s
= bfd_get_section_by_name (obfd
, ".toc");
11198 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11199 s
= bfd_get_section_by_name (obfd
, ".tocbss");
11200 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11201 s
= bfd_get_section_by_name (obfd
, ".plt");
11202 if (s
== NULL
|| (s
->flags
& SEC_EXCLUDE
) != 0)
11204 /* This may happen for
11205 o references to TOC base (SYM@toc / TOC[tc0]) without a
11207 o bad linker script
11208 o --gc-sections and empty TOC sections
11210 FIXME: Warn user? */
11212 /* Look for a likely section. We probably won't even be
11214 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11215 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_READONLY
11217 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11220 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11221 if ((s
->flags
& (SEC_ALLOC
| SEC_SMALL_DATA
| SEC_EXCLUDE
))
11222 == (SEC_ALLOC
| SEC_SMALL_DATA
))
11225 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11226 if ((s
->flags
& (SEC_ALLOC
| SEC_READONLY
| SEC_EXCLUDE
))
11230 for (s
= obfd
->sections
; s
!= NULL
; s
= s
->next
)
11231 if ((s
->flags
& (SEC_ALLOC
| SEC_EXCLUDE
)) == SEC_ALLOC
)
11237 TOCstart
= s
->output_section
->vma
+ s
->output_offset
;
11242 /* Build all the stubs associated with the current output file.
11243 The stubs are kept in a hash table attached to the main linker
11244 hash table. This function is called via gldelf64ppc_finish. */
11247 ppc64_elf_build_stubs (bfd_boolean emit_stub_syms
,
11248 struct bfd_link_info
*info
,
11251 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11252 asection
*stub_sec
;
11254 int stub_sec_count
= 0;
11259 htab
->emit_stub_syms
= emit_stub_syms
;
11261 /* Allocate memory to hold the linker stubs. */
11262 for (stub_sec
= htab
->stub_bfd
->sections
;
11264 stub_sec
= stub_sec
->next
)
11265 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0
11266 && stub_sec
->size
!= 0)
11268 stub_sec
->contents
= bfd_zalloc (htab
->stub_bfd
, stub_sec
->size
);
11269 if (stub_sec
->contents
== NULL
)
11271 /* We want to check that built size is the same as calculated
11272 size. rawsize is a convenient location to use. */
11273 stub_sec
->rawsize
= stub_sec
->size
;
11274 stub_sec
->size
= 0;
11277 if (htab
->glink
!= NULL
&& htab
->glink
->size
!= 0)
11282 /* Build the .glink plt call stub. */
11283 if (htab
->emit_stub_syms
)
11285 struct elf_link_hash_entry
*h
;
11286 h
= elf_link_hash_lookup (&htab
->elf
, "__glink_PLTresolve",
11287 TRUE
, FALSE
, FALSE
);
11290 if (h
->root
.type
== bfd_link_hash_new
)
11292 h
->root
.type
= bfd_link_hash_defined
;
11293 h
->root
.u
.def
.section
= htab
->glink
;
11294 h
->root
.u
.def
.value
= 8;
11295 h
->ref_regular
= 1;
11296 h
->def_regular
= 1;
11297 h
->ref_regular_nonweak
= 1;
11298 h
->forced_local
= 1;
11302 plt0
= htab
->plt
->output_section
->vma
+ htab
->plt
->output_offset
- 16;
11303 if (info
->emitrelocations
)
11305 Elf_Internal_Rela
*r
= get_relocs (htab
->glink
, 1);
11308 r
->r_offset
= (htab
->glink
->output_offset
11309 + htab
->glink
->output_section
->vma
);
11310 r
->r_info
= ELF64_R_INFO (0, R_PPC64_REL64
);
11311 r
->r_addend
= plt0
;
11313 p
= htab
->glink
->contents
;
11314 plt0
-= htab
->glink
->output_section
->vma
+ htab
->glink
->output_offset
;
11315 bfd_put_64 (htab
->glink
->owner
, plt0
, p
);
11317 bfd_put_32 (htab
->glink
->owner
, MFLR_R12
, p
);
11319 bfd_put_32 (htab
->glink
->owner
, BCL_20_31
, p
);
11321 bfd_put_32 (htab
->glink
->owner
, MFLR_R11
, p
);
11323 bfd_put_32 (htab
->glink
->owner
, LD_R2_M16R11
, p
);
11325 bfd_put_32 (htab
->glink
->owner
, MTLR_R12
, p
);
11327 bfd_put_32 (htab
->glink
->owner
, ADD_R12_R2_R11
, p
);
11329 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
, p
);
11331 bfd_put_32 (htab
->glink
->owner
, LD_R2_0R12
| 8, p
);
11333 bfd_put_32 (htab
->glink
->owner
, MTCTR_R11
, p
);
11335 bfd_put_32 (htab
->glink
->owner
, LD_R11_0R12
| 16, p
);
11337 bfd_put_32 (htab
->glink
->owner
, BCTR
, p
);
11339 while (p
- htab
->glink
->contents
< GLINK_CALL_STUB_SIZE
)
11341 bfd_put_32 (htab
->glink
->owner
, NOP
, p
);
11345 /* Build the .glink lazy link call stubs. */
11347 while (p
< htab
->glink
->contents
+ htab
->glink
->size
)
11351 bfd_put_32 (htab
->glink
->owner
, LI_R0_0
| indx
, p
);
11356 bfd_put_32 (htab
->glink
->owner
, LIS_R0_0
| PPC_HI (indx
), p
);
11358 bfd_put_32 (htab
->glink
->owner
, ORI_R0_R0_0
| PPC_LO (indx
), p
);
11361 bfd_put_32 (htab
->glink
->owner
,
11362 B_DOT
| ((htab
->glink
->contents
- p
+ 8) & 0x3fffffc), p
);
11366 htab
->glink
->rawsize
= p
- htab
->glink
->contents
;
11369 if (htab
->brlt
->size
!= 0)
11371 htab
->brlt
->contents
= bfd_zalloc (htab
->brlt
->owner
,
11373 if (htab
->brlt
->contents
== NULL
)
11376 if (htab
->relbrlt
!= NULL
&& htab
->relbrlt
->size
!= 0)
11378 htab
->relbrlt
->contents
= bfd_zalloc (htab
->relbrlt
->owner
,
11379 htab
->relbrlt
->size
);
11380 if (htab
->relbrlt
->contents
== NULL
)
11384 /* Build the stubs as directed by the stub hash table. */
11385 bfd_hash_traverse (&htab
->stub_hash_table
, ppc_build_one_stub
, info
);
11387 if (htab
->relbrlt
!= NULL
)
11388 htab
->relbrlt
->reloc_count
= 0;
11390 for (stub_sec
= htab
->stub_bfd
->sections
;
11392 stub_sec
= stub_sec
->next
)
11393 if ((stub_sec
->flags
& SEC_LINKER_CREATED
) == 0)
11395 stub_sec_count
+= 1;
11396 if (stub_sec
->rawsize
!= stub_sec
->size
)
11400 if (stub_sec
!= NULL
11401 || htab
->glink
->rawsize
!= htab
->glink
->size
)
11403 htab
->stub_error
= TRUE
;
11404 info
->callbacks
->einfo (_("stubs don't match calculated size\n"));
11407 if (htab
->stub_error
)
11412 *stats
= bfd_malloc (500);
11413 if (*stats
== NULL
)
11416 sprintf (*stats
, _("linker stubs in %u group%s\n"
11418 " toc adjust %lu\n"
11419 " long branch %lu\n"
11420 " long toc adj %lu\n"
11423 stub_sec_count
== 1 ? "" : "s",
11424 htab
->stub_count
[ppc_stub_long_branch
- 1],
11425 htab
->stub_count
[ppc_stub_long_branch_r2off
- 1],
11426 htab
->stub_count
[ppc_stub_plt_branch
- 1],
11427 htab
->stub_count
[ppc_stub_plt_branch_r2off
- 1],
11428 htab
->stub_count
[ppc_stub_plt_call
- 1]);
11433 /* This function undoes the changes made by add_symbol_adjust. */
11436 undo_symbol_twiddle (struct elf_link_hash_entry
*h
, void *inf ATTRIBUTE_UNUSED
)
11438 struct ppc_link_hash_entry
*eh
;
11440 if (h
->root
.type
== bfd_link_hash_indirect
)
11443 eh
= (struct ppc_link_hash_entry
*) h
;
11444 if (eh
->elf
.root
.type
!= bfd_link_hash_undefweak
|| !eh
->was_undefined
)
11447 eh
->elf
.root
.type
= bfd_link_hash_undefined
;
11452 ppc64_elf_restore_symbols (struct bfd_link_info
*info
)
11454 struct ppc_link_hash_table
*htab
= ppc_hash_table (info
);
11457 elf_link_hash_traverse (&htab
->elf
, undo_symbol_twiddle
, info
);
11460 /* What to do when ld finds relocations against symbols defined in
11461 discarded sections. */
11463 static unsigned int
11464 ppc64_elf_action_discarded (asection
*sec
)
11466 if (strcmp (".opd", sec
->name
) == 0)
11469 if (strcmp (".toc", sec
->name
) == 0)
11472 if (strcmp (".toc1", sec
->name
) == 0)
11475 return _bfd_elf_default_action_discarded (sec
);
11478 /* REL points to a low-part reloc on a largetoc instruction sequence.
11479 Find the matching high-part reloc instruction and verify that it
11480 is addis REG,x,imm. If so, set *REG to x and return a pointer to
11481 the high-part reloc. */
11483 static const Elf_Internal_Rela
*
11484 ha_reloc_match (const Elf_Internal_Rela
*relocs
,
11485 const Elf_Internal_Rela
*rel
,
11487 bfd_boolean match_addend
,
11488 const bfd
*input_bfd
,
11489 const bfd_byte
*contents
)
11491 enum elf_ppc64_reloc_type r_type
, r_type_ha
;
11492 bfd_vma r_info_ha
, r_addend
;
11494 r_type
= ELF64_R_TYPE (rel
->r_info
);
11497 case R_PPC64_GOT_TLSLD16_LO
:
11498 case R_PPC64_GOT_TLSGD16_LO
:
11499 case R_PPC64_GOT_TPREL16_LO_DS
:
11500 case R_PPC64_GOT_DTPREL16_LO_DS
:
11501 case R_PPC64_GOT16_LO
:
11502 case R_PPC64_TOC16_LO
:
11503 r_type_ha
= r_type
+ 2;
11505 case R_PPC64_GOT16_LO_DS
:
11506 r_type_ha
= R_PPC64_GOT16_HA
;
11508 case R_PPC64_TOC16_LO_DS
:
11509 r_type_ha
= R_PPC64_TOC16_HA
;
11514 r_info_ha
= ELF64_R_INFO (ELF64_R_SYM (rel
->r_info
), r_type_ha
);
11515 r_addend
= rel
->r_addend
;
11517 while (--rel
>= relocs
)
11518 if (rel
->r_info
== r_info_ha
11520 || rel
->r_addend
== r_addend
))
11522 const bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
11523 unsigned int insn
= bfd_get_32 (input_bfd
, p
);
11524 if ((insn
& (0x3f << 26)) == (15u << 26) /* addis rt,x,imm */
11525 && (insn
& (0x1f << 21)) == (*reg
<< 21))
11527 *reg
= (insn
>> 16) & 0x1f;
11535 /* The RELOCATE_SECTION function is called by the ELF backend linker
11536 to handle the relocations for a section.
11538 The relocs are always passed as Rela structures; if the section
11539 actually uses Rel structures, the r_addend field will always be
11542 This function is responsible for adjust the section contents as
11543 necessary, and (if using Rela relocs and generating a
11544 relocatable output file) adjusting the reloc addend as
11547 This function does not have to worry about setting the reloc
11548 address or the reloc symbol index.
11550 LOCAL_SYMS is a pointer to the swapped in local symbols.
11552 LOCAL_SECTIONS is an array giving the section in the input file
11553 corresponding to the st_shndx field of each local symbol.
11555 The global hash table entry for the global symbols can be found
11556 via elf_sym_hashes (input_bfd).
11558 When generating relocatable output, this function must handle
11559 STB_LOCAL/STT_SECTION symbols specially. The output symbol is
11560 going to be the section symbol corresponding to the output
11561 section, which means that the addend must be adjusted
11565 ppc64_elf_relocate_section (bfd
*output_bfd
,
11566 struct bfd_link_info
*info
,
11568 asection
*input_section
,
11569 bfd_byte
*contents
,
11570 Elf_Internal_Rela
*relocs
,
11571 Elf_Internal_Sym
*local_syms
,
11572 asection
**local_sections
)
11574 struct ppc_link_hash_table
*htab
;
11575 Elf_Internal_Shdr
*symtab_hdr
;
11576 struct elf_link_hash_entry
**sym_hashes
;
11577 Elf_Internal_Rela
*rel
;
11578 Elf_Internal_Rela
*relend
;
11579 Elf_Internal_Rela outrel
;
11581 struct got_entry
**local_got_ents
;
11582 unsigned char *ha_opt
;
11584 bfd_boolean no_ha_opt
;
11585 bfd_boolean ret
= TRUE
;
11586 bfd_boolean is_opd
;
11587 /* Disabled until we sort out how ld should choose 'y' vs 'at'. */
11588 bfd_boolean is_power4
= FALSE
;
11589 bfd_vma d_offset
= (bfd_big_endian (output_bfd
) ? 2 : 0);
11591 /* Initialize howto table if needed. */
11592 if (!ppc64_elf_howto_table
[R_PPC64_ADDR32
])
11595 htab
= ppc_hash_table (info
);
11599 /* Don't relocate stub sections. */
11600 if (input_section
->owner
== htab
->stub_bfd
)
11603 BFD_ASSERT (is_ppc64_elf (input_bfd
));
11605 local_got_ents
= elf_local_got_ents (input_bfd
);
11606 TOCstart
= elf_gp (output_bfd
);
11607 symtab_hdr
= &elf_symtab_hdr (input_bfd
);
11608 sym_hashes
= elf_sym_hashes (input_bfd
);
11609 is_opd
= ppc64_elf_section_data (input_section
)->sec_type
== sec_opd
;
11614 relend
= relocs
+ input_section
->reloc_count
;
11615 for (; rel
< relend
; rel
++)
11617 enum elf_ppc64_reloc_type r_type
;
11618 bfd_vma addend
, orig_addend
;
11619 bfd_reloc_status_type r
;
11620 Elf_Internal_Sym
*sym
;
11622 struct elf_link_hash_entry
*h_elf
;
11623 struct ppc_link_hash_entry
*h
;
11624 struct ppc_link_hash_entry
*fdh
;
11625 const char *sym_name
;
11626 unsigned long r_symndx
, toc_symndx
;
11627 bfd_vma toc_addend
;
11628 unsigned char tls_mask
, tls_gd
, tls_type
;
11629 unsigned char sym_type
;
11630 bfd_vma relocation
;
11631 bfd_boolean unresolved_reloc
;
11632 bfd_boolean warned
;
11635 struct ppc_stub_hash_entry
*stub_entry
;
11636 bfd_vma max_br_offset
;
11639 r_type
= ELF64_R_TYPE (rel
->r_info
);
11640 r_symndx
= ELF64_R_SYM (rel
->r_info
);
11642 /* For old style R_PPC64_TOC relocs with a zero symbol, use the
11643 symbol of the previous ADDR64 reloc. The symbol gives us the
11644 proper TOC base to use. */
11645 if (rel
->r_info
== ELF64_R_INFO (0, R_PPC64_TOC
)
11647 && ELF64_R_TYPE (rel
[-1].r_info
) == R_PPC64_ADDR64
11649 r_symndx
= ELF64_R_SYM (rel
[-1].r_info
);
11655 unresolved_reloc
= FALSE
;
11657 orig_addend
= rel
->r_addend
;
11659 if (r_symndx
< symtab_hdr
->sh_info
)
11661 /* It's a local symbol. */
11662 struct _opd_sec_data
*opd
;
11664 sym
= local_syms
+ r_symndx
;
11665 sec
= local_sections
[r_symndx
];
11666 sym_name
= bfd_elf_sym_name (input_bfd
, symtab_hdr
, sym
, sec
);
11667 sym_type
= ELF64_ST_TYPE (sym
->st_info
);
11668 relocation
= _bfd_elf_rela_local_sym (output_bfd
, sym
, &sec
, rel
);
11669 opd
= get_opd_info (sec
);
11670 if (opd
!= NULL
&& opd
->adjust
!= NULL
)
11672 long adjust
= opd
->adjust
[(sym
->st_value
+ rel
->r_addend
) / 8];
11677 /* If this is a relocation against the opd section sym
11678 and we have edited .opd, adjust the reloc addend so
11679 that ld -r and ld --emit-relocs output is correct.
11680 If it is a reloc against some other .opd symbol,
11681 then the symbol value will be adjusted later. */
11682 if (ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
)
11683 rel
->r_addend
+= adjust
;
11685 relocation
+= adjust
;
11691 RELOC_FOR_GLOBAL_SYMBOL (info
, input_bfd
, input_section
, rel
,
11692 r_symndx
, symtab_hdr
, sym_hashes
,
11693 h_elf
, sec
, relocation
,
11694 unresolved_reloc
, warned
);
11695 sym_name
= h_elf
->root
.root
.string
;
11696 sym_type
= h_elf
->type
;
11698 h
= (struct ppc_link_hash_entry
*) h_elf
;
11700 if (sec
!= NULL
&& elf_discarded_section (sec
))
11701 RELOC_AGAINST_DISCARDED_SECTION (info
, input_bfd
, input_section
,
11703 ppc64_elf_howto_table
[r_type
],
11706 if (info
->relocatable
)
11709 /* TLS optimizations. Replace instruction sequences and relocs
11710 based on information we collected in tls_optimize. We edit
11711 RELOCS so that --emit-relocs will output something sensible
11712 for the final instruction stream. */
11717 tls_mask
= h
->tls_mask
;
11718 else if (local_got_ents
!= NULL
)
11720 struct plt_entry
**local_plt
= (struct plt_entry
**)
11721 (local_got_ents
+ symtab_hdr
->sh_info
);
11722 unsigned char *lgot_masks
= (unsigned char *)
11723 (local_plt
+ symtab_hdr
->sh_info
);
11724 tls_mask
= lgot_masks
[r_symndx
];
11727 && (r_type
== R_PPC64_TLS
11728 || r_type
== R_PPC64_TLSGD
11729 || r_type
== R_PPC64_TLSLD
))
11731 /* Check for toc tls entries. */
11732 unsigned char *toc_tls
;
11734 if (!get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11735 &local_syms
, rel
, input_bfd
))
11739 tls_mask
= *toc_tls
;
11742 /* Check that tls relocs are used with tls syms, and non-tls
11743 relocs are used with non-tls syms. */
11744 if (r_symndx
!= STN_UNDEF
11745 && r_type
!= R_PPC64_NONE
11747 || h
->elf
.root
.type
== bfd_link_hash_defined
11748 || h
->elf
.root
.type
== bfd_link_hash_defweak
)
11749 && (IS_PPC64_TLS_RELOC (r_type
)
11750 != (sym_type
== STT_TLS
11751 || (sym_type
== STT_SECTION
11752 && (sec
->flags
& SEC_THREAD_LOCAL
) != 0))))
11755 && (r_type
== R_PPC64_TLS
11756 || r_type
== R_PPC64_TLSGD
11757 || r_type
== R_PPC64_TLSLD
))
11758 /* R_PPC64_TLS is OK against a symbol in the TOC. */
11761 info
->callbacks
->einfo
11762 (!IS_PPC64_TLS_RELOC (r_type
)
11763 ? _("%H: %s used with TLS symbol %s\n")
11764 : _("%H: %s used with non-TLS symbol %s\n"),
11765 input_bfd
, input_section
, rel
->r_offset
,
11766 ppc64_elf_howto_table
[r_type
]->name
,
11770 /* Ensure reloc mapping code below stays sane. */
11771 if (R_PPC64_TOC16_LO_DS
!= R_PPC64_TOC16_DS
+ 1
11772 || R_PPC64_TOC16_LO
!= R_PPC64_TOC16
+ 1
11773 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TLSGD16
& 3)
11774 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TLSGD16_LO
& 3)
11775 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TLSGD16_HI
& 3)
11776 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TLSGD16_HA
& 3)
11777 || (R_PPC64_GOT_TLSLD16
& 3) != (R_PPC64_GOT_TPREL16_DS
& 3)
11778 || (R_PPC64_GOT_TLSLD16_LO
& 3) != (R_PPC64_GOT_TPREL16_LO_DS
& 3)
11779 || (R_PPC64_GOT_TLSLD16_HI
& 3) != (R_PPC64_GOT_TPREL16_HI
& 3)
11780 || (R_PPC64_GOT_TLSLD16_HA
& 3) != (R_PPC64_GOT_TPREL16_HA
& 3))
11788 case R_PPC64_LO_DS_OPT
:
11789 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11790 if ((insn
& (0x3f << 26)) != 58u << 26)
11792 insn
+= (14u << 26) - (58u << 26);
11793 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11794 r_type
= R_PPC64_TOC16_LO
;
11795 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11798 case R_PPC64_TOC16
:
11799 case R_PPC64_TOC16_LO
:
11800 case R_PPC64_TOC16_DS
:
11801 case R_PPC64_TOC16_LO_DS
:
11803 /* Check for toc tls entries. */
11804 unsigned char *toc_tls
;
11807 retval
= get_tls_mask (&toc_tls
, &toc_symndx
, &toc_addend
,
11808 &local_syms
, rel
, input_bfd
);
11814 tls_mask
= *toc_tls
;
11815 if (r_type
== R_PPC64_TOC16_DS
11816 || r_type
== R_PPC64_TOC16_LO_DS
)
11819 && (tls_mask
& (TLS_DTPREL
| TLS_TPREL
)) == 0)
11824 /* If we found a GD reloc pair, then we might be
11825 doing a GD->IE transition. */
11828 tls_gd
= TLS_TPRELGD
;
11829 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11832 else if (retval
== 3)
11834 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11842 case R_PPC64_GOT_TPREL16_HI
:
11843 case R_PPC64_GOT_TPREL16_HA
:
11845 && (tls_mask
& TLS_TPREL
) == 0)
11847 rel
->r_offset
-= d_offset
;
11848 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11849 r_type
= R_PPC64_NONE
;
11850 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11854 case R_PPC64_GOT_TPREL16_DS
:
11855 case R_PPC64_GOT_TPREL16_LO_DS
:
11857 && (tls_mask
& TLS_TPREL
) == 0)
11860 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
- d_offset
);
11862 insn
|= 0x3c0d0000; /* addis 0,13,0 */
11863 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
- d_offset
);
11864 r_type
= R_PPC64_TPREL16_HA
;
11865 if (toc_symndx
!= 0)
11867 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11868 rel
->r_addend
= toc_addend
;
11869 /* We changed the symbol. Start over in order to
11870 get h, sym, sec etc. right. */
11875 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11881 && (tls_mask
& TLS_TPREL
) == 0)
11883 insn
= bfd_get_32 (output_bfd
, contents
+ rel
->r_offset
);
11884 insn
= _bfd_elf_ppc_at_tls_transform (insn
, 13);
11887 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
11888 /* Was PPC64_TLS which sits on insn boundary, now
11889 PPC64_TPREL16_LO which is at low-order half-word. */
11890 rel
->r_offset
+= d_offset
;
11891 r_type
= R_PPC64_TPREL16_LO
;
11892 if (toc_symndx
!= 0)
11894 rel
->r_info
= ELF64_R_INFO (toc_symndx
, r_type
);
11895 rel
->r_addend
= toc_addend
;
11896 /* We changed the symbol. Start over in order to
11897 get h, sym, sec etc. right. */
11902 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11906 case R_PPC64_GOT_TLSGD16_HI
:
11907 case R_PPC64_GOT_TLSGD16_HA
:
11908 tls_gd
= TLS_TPRELGD
;
11909 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11913 case R_PPC64_GOT_TLSLD16_HI
:
11914 case R_PPC64_GOT_TLSLD16_HA
:
11915 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11918 if ((tls_mask
& tls_gd
) != 0)
11919 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11920 + R_PPC64_GOT_TPREL16_DS
);
11923 rel
->r_offset
-= d_offset
;
11924 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
11925 r_type
= R_PPC64_NONE
;
11927 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11931 case R_PPC64_GOT_TLSGD16
:
11932 case R_PPC64_GOT_TLSGD16_LO
:
11933 tls_gd
= TLS_TPRELGD
;
11934 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
11938 case R_PPC64_GOT_TLSLD16
:
11939 case R_PPC64_GOT_TLSLD16_LO
:
11940 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
11942 unsigned int insn1
, insn2
, insn3
;
11946 offset
= (bfd_vma
) -1;
11947 /* If not using the newer R_PPC64_TLSGD/LD to mark
11948 __tls_get_addr calls, we must trust that the call
11949 stays with its arg setup insns, ie. that the next
11950 reloc is the __tls_get_addr call associated with
11951 the current reloc. Edit both insns. */
11952 if (input_section
->has_tls_get_addr_call
11953 && rel
+ 1 < relend
11954 && branch_reloc_hash_match (input_bfd
, rel
+ 1,
11955 htab
->tls_get_addr
,
11956 htab
->tls_get_addr_fd
))
11957 offset
= rel
[1].r_offset
;
11958 if ((tls_mask
& tls_gd
) != 0)
11961 insn1
= bfd_get_32 (output_bfd
,
11962 contents
+ rel
->r_offset
- d_offset
);
11963 insn1
&= (1 << 26) - (1 << 2);
11964 insn1
|= 58 << 26; /* ld */
11965 insn2
= 0x7c636a14; /* add 3,3,13 */
11966 if (offset
!= (bfd_vma
) -1)
11967 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
11968 if ((tls_mask
& TLS_EXPLICIT
) == 0)
11969 r_type
= (((r_type
- (R_PPC64_GOT_TLSGD16
& 3)) & 3)
11970 + R_PPC64_GOT_TPREL16_DS
);
11972 r_type
+= R_PPC64_TOC16_DS
- R_PPC64_TOC16
;
11973 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
11978 insn1
= 0x3c6d0000; /* addis 3,13,0 */
11979 insn2
= 0x38630000; /* addi 3,3,0 */
11982 /* Was an LD reloc. */
11984 sec
= local_sections
[toc_symndx
];
11986 r_symndx
< symtab_hdr
->sh_info
;
11988 if (local_sections
[r_symndx
] == sec
)
11990 if (r_symndx
>= symtab_hdr
->sh_info
)
11991 r_symndx
= STN_UNDEF
;
11992 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
11993 if (r_symndx
!= STN_UNDEF
)
11994 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
11995 + sec
->output_offset
11996 + sec
->output_section
->vma
);
11998 else if (toc_symndx
!= 0)
12000 r_symndx
= toc_symndx
;
12001 rel
->r_addend
= toc_addend
;
12003 r_type
= R_PPC64_TPREL16_HA
;
12004 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12005 if (offset
!= (bfd_vma
) -1)
12007 rel
[1].r_info
= ELF64_R_INFO (r_symndx
,
12008 R_PPC64_TPREL16_LO
);
12009 rel
[1].r_offset
= offset
+ d_offset
;
12010 rel
[1].r_addend
= rel
->r_addend
;
12013 bfd_put_32 (output_bfd
, insn1
,
12014 contents
+ rel
->r_offset
- d_offset
);
12015 if (offset
!= (bfd_vma
) -1)
12017 insn3
= bfd_get_32 (output_bfd
,
12018 contents
+ offset
+ 4);
12020 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12022 rel
[1].r_offset
+= 4;
12023 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12026 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12028 if ((tls_mask
& tls_gd
) == 0
12029 && (tls_gd
== 0 || toc_symndx
!= 0))
12031 /* We changed the symbol. Start over in order
12032 to get h, sym, sec etc. right. */
12039 case R_PPC64_TLSGD
:
12040 if (tls_mask
!= 0 && (tls_mask
& TLS_GD
) == 0)
12042 unsigned int insn2
, insn3
;
12043 bfd_vma offset
= rel
->r_offset
;
12045 if ((tls_mask
& TLS_TPRELGD
) != 0)
12048 r_type
= R_PPC64_NONE
;
12049 insn2
= 0x7c636a14; /* add 3,3,13 */
12054 if (toc_symndx
!= 0)
12056 r_symndx
= toc_symndx
;
12057 rel
->r_addend
= toc_addend
;
12059 r_type
= R_PPC64_TPREL16_LO
;
12060 rel
->r_offset
= offset
+ d_offset
;
12061 insn2
= 0x38630000; /* addi 3,3,0 */
12063 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12064 /* Zap the reloc on the _tls_get_addr call too. */
12065 BFD_ASSERT (offset
== rel
[1].r_offset
);
12066 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
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
);
12077 if ((tls_mask
& TLS_TPRELGD
) == 0 && toc_symndx
!= 0)
12085 case R_PPC64_TLSLD
:
12086 if (tls_mask
!= 0 && (tls_mask
& TLS_LD
) == 0)
12088 unsigned int insn2
, insn3
;
12089 bfd_vma offset
= rel
->r_offset
;
12092 sec
= local_sections
[toc_symndx
];
12094 r_symndx
< symtab_hdr
->sh_info
;
12096 if (local_sections
[r_symndx
] == sec
)
12098 if (r_symndx
>= symtab_hdr
->sh_info
)
12099 r_symndx
= STN_UNDEF
;
12100 rel
->r_addend
= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12101 if (r_symndx
!= STN_UNDEF
)
12102 rel
->r_addend
-= (local_syms
[r_symndx
].st_value
12103 + sec
->output_offset
12104 + sec
->output_section
->vma
);
12106 r_type
= R_PPC64_TPREL16_LO
;
12107 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12108 rel
->r_offset
= offset
+ d_offset
;
12109 /* Zap the reloc on the _tls_get_addr call too. */
12110 BFD_ASSERT (offset
== rel
[1].r_offset
);
12111 rel
[1].r_info
= ELF64_R_INFO (STN_UNDEF
, R_PPC64_NONE
);
12112 insn2
= 0x38630000; /* addi 3,3,0 */
12113 insn3
= bfd_get_32 (output_bfd
,
12114 contents
+ offset
+ 4);
12116 || insn3
== CROR_151515
|| insn3
== CROR_313131
)
12118 rel
->r_offset
+= 4;
12119 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
+ 4);
12122 bfd_put_32 (output_bfd
, insn2
, contents
+ offset
);
12128 case R_PPC64_DTPMOD64
:
12129 if (rel
+ 1 < relend
12130 && rel
[1].r_info
== ELF64_R_INFO (r_symndx
, R_PPC64_DTPREL64
)
12131 && rel
[1].r_offset
== rel
->r_offset
+ 8)
12133 if ((tls_mask
& TLS_GD
) == 0)
12135 rel
[1].r_info
= ELF64_R_INFO (r_symndx
, R_PPC64_NONE
);
12136 if ((tls_mask
& TLS_TPRELGD
) != 0)
12137 r_type
= R_PPC64_TPREL64
;
12140 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12141 r_type
= R_PPC64_NONE
;
12143 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12148 if ((tls_mask
& TLS_LD
) == 0)
12150 bfd_put_64 (output_bfd
, 1, contents
+ rel
->r_offset
);
12151 r_type
= R_PPC64_NONE
;
12152 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12157 case R_PPC64_TPREL64
:
12158 if ((tls_mask
& TLS_TPREL
) == 0)
12160 r_type
= R_PPC64_NONE
;
12161 rel
->r_info
= ELF64_R_INFO (r_symndx
, r_type
);
12166 /* Handle other relocations that tweak non-addend part of insn. */
12168 max_br_offset
= 1 << 25;
12169 addend
= rel
->r_addend
;
12175 /* Branch taken prediction relocations. */
12176 case R_PPC64_ADDR14_BRTAKEN
:
12177 case R_PPC64_REL14_BRTAKEN
:
12178 insn
= 0x01 << 21; /* 'y' or 't' bit, lowest bit of BO field. */
12181 /* Branch not taken prediction relocations. */
12182 case R_PPC64_ADDR14_BRNTAKEN
:
12183 case R_PPC64_REL14_BRNTAKEN
:
12184 insn
|= bfd_get_32 (output_bfd
,
12185 contents
+ rel
->r_offset
) & ~(0x01 << 21);
12188 case R_PPC64_REL14
:
12189 max_br_offset
= 1 << 15;
12192 case R_PPC64_REL24
:
12193 /* Calls to functions with a different TOC, such as calls to
12194 shared objects, need to alter the TOC pointer. This is
12195 done using a linkage stub. A REL24 branching to these
12196 linkage stubs needs to be followed by a nop, as the nop
12197 will be replaced with an instruction to restore the TOC
12202 && h
->oh
->is_func_descriptor
)
12203 fdh
= ppc_follow_link (h
->oh
);
12204 stub_entry
= ppc_get_stub_entry (input_section
, sec
, fdh
, rel
, htab
);
12205 if (stub_entry
!= NULL
12206 && (stub_entry
->stub_type
== ppc_stub_plt_call
12207 || stub_entry
->stub_type
== ppc_stub_plt_branch_r2off
12208 || stub_entry
->stub_type
== ppc_stub_long_branch_r2off
))
12210 bfd_boolean can_plt_call
= FALSE
;
12212 if (rel
->r_offset
+ 8 <= input_section
->size
)
12215 nop
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
+ 4);
12217 || nop
== CROR_151515
|| nop
== CROR_313131
)
12220 && (h
== htab
->tls_get_addr_fd
12221 || h
== htab
->tls_get_addr
)
12222 && !htab
->no_tls_get_addr_opt
)
12224 /* Special stub used, leave nop alone. */
12227 bfd_put_32 (input_bfd
, LD_R2_40R1
,
12228 contents
+ rel
->r_offset
+ 4);
12229 can_plt_call
= TRUE
;
12235 if (stub_entry
->stub_type
== ppc_stub_plt_call
)
12237 /* If this is a plain branch rather than a branch
12238 and link, don't require a nop. However, don't
12239 allow tail calls in a shared library as they
12240 will result in r2 being corrupted. */
12242 br
= bfd_get_32 (input_bfd
, contents
+ rel
->r_offset
);
12243 if (info
->executable
&& (br
& 1) == 0)
12244 can_plt_call
= TRUE
;
12249 && strcmp (h
->elf
.root
.root
.string
,
12250 ".__libc_start_main") == 0)
12252 /* Allow crt1 branch to go via a toc adjusting stub. */
12253 can_plt_call
= TRUE
;
12257 if (strcmp (input_section
->output_section
->name
,
12259 || strcmp (input_section
->output_section
->name
,
12261 info
->callbacks
->einfo
12262 (_("%H: automatic multiple TOCs "
12263 "not supported using your crt files; "
12264 "recompile with -mminimal-toc or upgrade gcc\n"),
12265 input_bfd
, input_section
, rel
->r_offset
);
12267 info
->callbacks
->einfo
12268 (_("%H: sibling call optimization to `%s' "
12269 "does not allow automatic multiple TOCs; "
12270 "recompile with -mminimal-toc or "
12271 "-fno-optimize-sibling-calls, "
12272 "or make `%s' extern\n"),
12273 input_bfd
, input_section
, rel
->r_offset
,
12276 bfd_set_error (bfd_error_bad_value
);
12282 && stub_entry
->stub_type
== ppc_stub_plt_call
)
12283 unresolved_reloc
= FALSE
;
12286 if ((stub_entry
== NULL
12287 || stub_entry
->stub_type
== ppc_stub_long_branch
12288 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12289 && get_opd_info (sec
) != NULL
)
12291 /* The branch destination is the value of the opd entry. */
12292 bfd_vma off
= (relocation
+ addend
12293 - sec
->output_section
->vma
12294 - sec
->output_offset
);
12295 bfd_vma dest
= opd_entry_value (sec
, off
, NULL
, NULL
);
12296 if (dest
!= (bfd_vma
) -1)
12303 /* If the branch is out of reach we ought to have a long
12305 from
= (rel
->r_offset
12306 + input_section
->output_offset
12307 + input_section
->output_section
->vma
);
12309 if (stub_entry
!= NULL
12310 && (stub_entry
->stub_type
== ppc_stub_long_branch
12311 || stub_entry
->stub_type
== ppc_stub_plt_branch
)
12312 && (r_type
== R_PPC64_ADDR14_BRTAKEN
12313 || r_type
== R_PPC64_ADDR14_BRNTAKEN
12314 || (relocation
+ addend
- from
+ max_br_offset
12315 < 2 * max_br_offset
)))
12316 /* Don't use the stub if this branch is in range. */
12319 if (stub_entry
!= NULL
)
12321 /* Munge up the value and addend so that we call the stub
12322 rather than the procedure directly. */
12323 relocation
= (stub_entry
->stub_offset
12324 + stub_entry
->stub_sec
->output_offset
12325 + stub_entry
->stub_sec
->output_section
->vma
);
12333 /* Set 'a' bit. This is 0b00010 in BO field for branch
12334 on CR(BI) insns (BO == 001at or 011at), and 0b01000
12335 for branch on CTR insns (BO == 1a00t or 1a01t). */
12336 if ((insn
& (0x14 << 21)) == (0x04 << 21))
12337 insn
|= 0x02 << 21;
12338 else if ((insn
& (0x14 << 21)) == (0x10 << 21))
12339 insn
|= 0x08 << 21;
12345 /* Invert 'y' bit if not the default. */
12346 if ((bfd_signed_vma
) (relocation
+ addend
- from
) < 0)
12347 insn
^= 0x01 << 21;
12350 bfd_put_32 (output_bfd
, insn
, contents
+ rel
->r_offset
);
12353 /* NOP out calls to undefined weak functions.
12354 We can thus call a weak function without first
12355 checking whether the function is defined. */
12357 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12358 && h
->elf
.dynindx
== -1
12359 && r_type
== R_PPC64_REL24
12363 bfd_put_32 (output_bfd
, NOP
, contents
+ rel
->r_offset
);
12369 /* Set `addend'. */
12374 info
->callbacks
->einfo
12375 (_("%B: unknown relocation type %d for symbol %s\n"),
12376 input_bfd
, (int) r_type
, sym_name
);
12378 bfd_set_error (bfd_error_bad_value
);
12384 case R_PPC64_TLSGD
:
12385 case R_PPC64_TLSLD
:
12386 case R_PPC64_GNU_VTINHERIT
:
12387 case R_PPC64_GNU_VTENTRY
:
12390 /* GOT16 relocations. Like an ADDR16 using the symbol's
12391 address in the GOT as relocation value instead of the
12392 symbol's value itself. Also, create a GOT entry for the
12393 symbol and put the symbol value there. */
12394 case R_PPC64_GOT_TLSGD16
:
12395 case R_PPC64_GOT_TLSGD16_LO
:
12396 case R_PPC64_GOT_TLSGD16_HI
:
12397 case R_PPC64_GOT_TLSGD16_HA
:
12398 tls_type
= TLS_TLS
| TLS_GD
;
12401 case R_PPC64_GOT_TLSLD16
:
12402 case R_PPC64_GOT_TLSLD16_LO
:
12403 case R_PPC64_GOT_TLSLD16_HI
:
12404 case R_PPC64_GOT_TLSLD16_HA
:
12405 tls_type
= TLS_TLS
| TLS_LD
;
12408 case R_PPC64_GOT_TPREL16_DS
:
12409 case R_PPC64_GOT_TPREL16_LO_DS
:
12410 case R_PPC64_GOT_TPREL16_HI
:
12411 case R_PPC64_GOT_TPREL16_HA
:
12412 tls_type
= TLS_TLS
| TLS_TPREL
;
12415 case R_PPC64_GOT_DTPREL16_DS
:
12416 case R_PPC64_GOT_DTPREL16_LO_DS
:
12417 case R_PPC64_GOT_DTPREL16_HI
:
12418 case R_PPC64_GOT_DTPREL16_HA
:
12419 tls_type
= TLS_TLS
| TLS_DTPREL
;
12422 case R_PPC64_GOT16
:
12423 case R_PPC64_GOT16_LO
:
12424 case R_PPC64_GOT16_HI
:
12425 case R_PPC64_GOT16_HA
:
12426 case R_PPC64_GOT16_DS
:
12427 case R_PPC64_GOT16_LO_DS
:
12430 /* Relocation is to the entry for this symbol in the global
12435 unsigned long indx
= 0;
12436 struct got_entry
*ent
;
12438 if (tls_type
== (TLS_TLS
| TLS_LD
)
12440 || !h
->elf
.def_dynamic
))
12441 ent
= ppc64_tlsld_got (input_bfd
);
12447 bfd_boolean dyn
= htab
->elf
.dynamic_sections_created
;
12448 if (!WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn
, info
->shared
,
12451 && SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12452 /* This is actually a static link, or it is a
12453 -Bsymbolic link and the symbol is defined
12454 locally, or the symbol was forced to be local
12455 because of a version file. */
12459 indx
= h
->elf
.dynindx
;
12460 unresolved_reloc
= FALSE
;
12462 ent
= h
->elf
.got
.glist
;
12466 if (local_got_ents
== NULL
)
12468 ent
= local_got_ents
[r_symndx
];
12471 for (; ent
!= NULL
; ent
= ent
->next
)
12472 if (ent
->addend
== orig_addend
12473 && ent
->owner
== input_bfd
12474 && ent
->tls_type
== tls_type
)
12480 if (ent
->is_indirect
)
12481 ent
= ent
->got
.ent
;
12482 offp
= &ent
->got
.offset
;
12483 got
= ppc64_elf_tdata (ent
->owner
)->got
;
12487 /* The offset must always be a multiple of 8. We use the
12488 least significant bit to record whether we have already
12489 processed this entry. */
12491 if ((off
& 1) != 0)
12495 /* Generate relocs for the dynamic linker, except in
12496 the case of TLSLD where we'll use one entry per
12504 ? h
->elf
.type
== STT_GNU_IFUNC
12505 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
);
12506 if ((info
->shared
|| indx
!= 0)
12508 || (tls_type
== (TLS_TLS
| TLS_LD
)
12509 && !h
->elf
.def_dynamic
)
12510 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12511 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
))
12512 relgot
= ppc64_elf_tdata (ent
->owner
)->relgot
;
12514 relgot
= htab
->reliplt
;
12515 if (relgot
!= NULL
)
12517 outrel
.r_offset
= (got
->output_section
->vma
12518 + got
->output_offset
12520 outrel
.r_addend
= addend
;
12521 if (tls_type
& (TLS_LD
| TLS_GD
))
12523 outrel
.r_addend
= 0;
12524 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPMOD64
);
12525 if (tls_type
== (TLS_TLS
| TLS_GD
))
12527 loc
= relgot
->contents
;
12528 loc
+= (relgot
->reloc_count
++
12529 * sizeof (Elf64_External_Rela
));
12530 bfd_elf64_swap_reloca_out (output_bfd
,
12532 outrel
.r_offset
+= 8;
12533 outrel
.r_addend
= addend
;
12535 = ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12538 else if (tls_type
== (TLS_TLS
| TLS_DTPREL
))
12539 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_DTPREL64
);
12540 else if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12541 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_TPREL64
);
12542 else if (indx
!= 0)
12543 outrel
.r_info
= ELF64_R_INFO (indx
, R_PPC64_GLOB_DAT
);
12547 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12549 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12551 /* Write the .got section contents for the sake
12553 loc
= got
->contents
+ off
;
12554 bfd_put_64 (output_bfd
, outrel
.r_addend
+ relocation
,
12558 if (indx
== 0 && tls_type
!= (TLS_TLS
| TLS_LD
))
12560 outrel
.r_addend
+= relocation
;
12561 if (tls_type
& (TLS_GD
| TLS_DTPREL
| TLS_TPREL
))
12562 outrel
.r_addend
-= htab
->elf
.tls_sec
->vma
;
12564 loc
= relgot
->contents
;
12565 loc
+= (relgot
->reloc_count
++
12566 * sizeof (Elf64_External_Rela
));
12567 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12570 /* Init the .got section contents here if we're not
12571 emitting a reloc. */
12574 relocation
+= addend
;
12575 if (tls_type
== (TLS_TLS
| TLS_LD
))
12577 else if (tls_type
!= 0)
12579 relocation
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12580 if (tls_type
== (TLS_TLS
| TLS_TPREL
))
12581 relocation
+= DTP_OFFSET
- TP_OFFSET
;
12583 if (tls_type
== (TLS_TLS
| TLS_GD
))
12585 bfd_put_64 (output_bfd
, relocation
,
12586 got
->contents
+ off
+ 8);
12591 bfd_put_64 (output_bfd
, relocation
,
12592 got
->contents
+ off
);
12596 if (off
>= (bfd_vma
) -2)
12599 relocation
= got
->output_section
->vma
+ got
->output_offset
+ off
;
12600 addend
= -(TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
);
12604 case R_PPC64_PLT16_HA
:
12605 case R_PPC64_PLT16_HI
:
12606 case R_PPC64_PLT16_LO
:
12607 case R_PPC64_PLT32
:
12608 case R_PPC64_PLT64
:
12609 /* Relocation is to the entry for this symbol in the
12610 procedure linkage table. */
12612 /* Resolve a PLT reloc against a local symbol directly,
12613 without using the procedure linkage table. */
12617 /* It's possible that we didn't make a PLT entry for this
12618 symbol. This happens when statically linking PIC code,
12619 or when using -Bsymbolic. Go find a match if there is a
12621 if (htab
->plt
!= NULL
)
12623 struct plt_entry
*ent
;
12624 for (ent
= h
->elf
.plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
12625 if (ent
->addend
== orig_addend
12626 && ent
->plt
.offset
!= (bfd_vma
) -1)
12628 relocation
= (htab
->plt
->output_section
->vma
12629 + htab
->plt
->output_offset
12630 + ent
->plt
.offset
);
12631 unresolved_reloc
= FALSE
;
12637 /* Relocation value is TOC base. */
12638 relocation
= TOCstart
;
12639 if (r_symndx
== STN_UNDEF
)
12640 relocation
+= htab
->stub_group
[input_section
->id
].toc_off
;
12641 else if (unresolved_reloc
)
12643 else if (sec
!= NULL
&& sec
->id
<= htab
->top_id
)
12644 relocation
+= htab
->stub_group
[sec
->id
].toc_off
;
12646 unresolved_reloc
= TRUE
;
12649 /* TOC16 relocs. We want the offset relative to the TOC base,
12650 which is the address of the start of the TOC plus 0x8000.
12651 The TOC consists of sections .got, .toc, .tocbss, and .plt,
12653 case R_PPC64_TOC16
:
12654 case R_PPC64_TOC16_LO
:
12655 case R_PPC64_TOC16_HI
:
12656 case R_PPC64_TOC16_DS
:
12657 case R_PPC64_TOC16_LO_DS
:
12658 case R_PPC64_TOC16_HA
:
12659 addend
-= TOCstart
+ htab
->stub_group
[input_section
->id
].toc_off
;
12662 /* Relocate against the beginning of the section. */
12663 case R_PPC64_SECTOFF
:
12664 case R_PPC64_SECTOFF_LO
:
12665 case R_PPC64_SECTOFF_HI
:
12666 case R_PPC64_SECTOFF_DS
:
12667 case R_PPC64_SECTOFF_LO_DS
:
12668 case R_PPC64_SECTOFF_HA
:
12670 addend
-= sec
->output_section
->vma
;
12673 case R_PPC64_REL16
:
12674 case R_PPC64_REL16_LO
:
12675 case R_PPC64_REL16_HI
:
12676 case R_PPC64_REL16_HA
:
12679 case R_PPC64_REL14
:
12680 case R_PPC64_REL14_BRNTAKEN
:
12681 case R_PPC64_REL14_BRTAKEN
:
12682 case R_PPC64_REL24
:
12685 case R_PPC64_TPREL16
:
12686 case R_PPC64_TPREL16_LO
:
12687 case R_PPC64_TPREL16_HI
:
12688 case R_PPC64_TPREL16_HA
:
12689 case R_PPC64_TPREL16_DS
:
12690 case R_PPC64_TPREL16_LO_DS
:
12691 case R_PPC64_TPREL16_HIGHER
:
12692 case R_PPC64_TPREL16_HIGHERA
:
12693 case R_PPC64_TPREL16_HIGHEST
:
12694 case R_PPC64_TPREL16_HIGHESTA
:
12696 && h
->elf
.root
.type
== bfd_link_hash_undefweak
12697 && h
->elf
.dynindx
== -1)
12699 /* Make this relocation against an undefined weak symbol
12700 resolve to zero. This is really just a tweak, since
12701 code using weak externs ought to check that they are
12702 defined before using them. */
12703 bfd_byte
*p
= contents
+ rel
->r_offset
- d_offset
;
12705 insn
= bfd_get_32 (output_bfd
, p
);
12706 insn
= _bfd_elf_ppc_at_tprel_transform (insn
, 13);
12708 bfd_put_32 (output_bfd
, insn
, p
);
12711 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12713 /* The TPREL16 relocs shouldn't really be used in shared
12714 libs as they will result in DT_TEXTREL being set, but
12715 support them anyway. */
12719 case R_PPC64_DTPREL16
:
12720 case R_PPC64_DTPREL16_LO
:
12721 case R_PPC64_DTPREL16_HI
:
12722 case R_PPC64_DTPREL16_HA
:
12723 case R_PPC64_DTPREL16_DS
:
12724 case R_PPC64_DTPREL16_LO_DS
:
12725 case R_PPC64_DTPREL16_HIGHER
:
12726 case R_PPC64_DTPREL16_HIGHERA
:
12727 case R_PPC64_DTPREL16_HIGHEST
:
12728 case R_PPC64_DTPREL16_HIGHESTA
:
12729 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12732 case R_PPC64_DTPMOD64
:
12737 case R_PPC64_TPREL64
:
12738 addend
-= htab
->elf
.tls_sec
->vma
+ TP_OFFSET
;
12741 case R_PPC64_DTPREL64
:
12742 addend
-= htab
->elf
.tls_sec
->vma
+ DTP_OFFSET
;
12745 /* Relocations that may need to be propagated if this is a
12747 case R_PPC64_REL30
:
12748 case R_PPC64_REL32
:
12749 case R_PPC64_REL64
:
12750 case R_PPC64_ADDR14
:
12751 case R_PPC64_ADDR14_BRNTAKEN
:
12752 case R_PPC64_ADDR14_BRTAKEN
:
12753 case R_PPC64_ADDR16
:
12754 case R_PPC64_ADDR16_DS
:
12755 case R_PPC64_ADDR16_HA
:
12756 case R_PPC64_ADDR16_HI
:
12757 case R_PPC64_ADDR16_HIGHER
:
12758 case R_PPC64_ADDR16_HIGHERA
:
12759 case R_PPC64_ADDR16_HIGHEST
:
12760 case R_PPC64_ADDR16_HIGHESTA
:
12761 case R_PPC64_ADDR16_LO
:
12762 case R_PPC64_ADDR16_LO_DS
:
12763 case R_PPC64_ADDR24
:
12764 case R_PPC64_ADDR32
:
12765 case R_PPC64_ADDR64
:
12766 case R_PPC64_UADDR16
:
12767 case R_PPC64_UADDR32
:
12768 case R_PPC64_UADDR64
:
12770 if ((input_section
->flags
& SEC_ALLOC
) == 0)
12773 if (NO_OPD_RELOCS
&& is_opd
)
12778 || ELF_ST_VISIBILITY (h
->elf
.other
) == STV_DEFAULT
12779 || h
->elf
.root
.type
!= bfd_link_hash_undefweak
)
12780 && (must_be_dyn_reloc (info
, r_type
)
12781 || !SYMBOL_CALLS_LOCAL (info
, &h
->elf
)))
12782 || (ELIMINATE_COPY_RELOCS
12785 && h
->elf
.dynindx
!= -1
12786 && !h
->elf
.non_got_ref
12787 && !h
->elf
.def_regular
)
12790 ? h
->elf
.type
== STT_GNU_IFUNC
12791 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)))
12793 bfd_boolean skip
, relocate
;
12797 /* When generating a dynamic object, these relocations
12798 are copied into the output file to be resolved at run
12804 out_off
= _bfd_elf_section_offset (output_bfd
, info
,
12805 input_section
, rel
->r_offset
);
12806 if (out_off
== (bfd_vma
) -1)
12808 else if (out_off
== (bfd_vma
) -2)
12809 skip
= TRUE
, relocate
= TRUE
;
12810 out_off
+= (input_section
->output_section
->vma
12811 + input_section
->output_offset
);
12812 outrel
.r_offset
= out_off
;
12813 outrel
.r_addend
= rel
->r_addend
;
12815 /* Optimize unaligned reloc use. */
12816 if ((r_type
== R_PPC64_ADDR64
&& (out_off
& 7) != 0)
12817 || (r_type
== R_PPC64_UADDR64
&& (out_off
& 7) == 0))
12818 r_type
^= R_PPC64_ADDR64
^ R_PPC64_UADDR64
;
12819 else if ((r_type
== R_PPC64_ADDR32
&& (out_off
& 3) != 0)
12820 || (r_type
== R_PPC64_UADDR32
&& (out_off
& 3) == 0))
12821 r_type
^= R_PPC64_ADDR32
^ R_PPC64_UADDR32
;
12822 else if ((r_type
== R_PPC64_ADDR16
&& (out_off
& 1) != 0)
12823 || (r_type
== R_PPC64_UADDR16
&& (out_off
& 1) == 0))
12824 r_type
^= R_PPC64_ADDR16
^ R_PPC64_UADDR16
;
12827 memset (&outrel
, 0, sizeof outrel
);
12828 else if (!SYMBOL_CALLS_LOCAL (info
, &h
->elf
)
12830 && r_type
!= R_PPC64_TOC
)
12831 outrel
.r_info
= ELF64_R_INFO (h
->elf
.dynindx
, r_type
);
12834 /* This symbol is local, or marked to become local,
12835 or this is an opd section reloc which must point
12836 at a local function. */
12837 outrel
.r_addend
+= relocation
;
12838 if (r_type
== R_PPC64_ADDR64
|| r_type
== R_PPC64_TOC
)
12840 if (is_opd
&& h
!= NULL
)
12842 /* Lie about opd entries. This case occurs
12843 when building shared libraries and we
12844 reference a function in another shared
12845 lib. The same thing happens for a weak
12846 definition in an application that's
12847 overridden by a strong definition in a
12848 shared lib. (I believe this is a generic
12849 bug in binutils handling of weak syms.)
12850 In these cases we won't use the opd
12851 entry in this lib. */
12852 unresolved_reloc
= FALSE
;
12855 && r_type
== R_PPC64_ADDR64
12857 ? h
->elf
.type
== STT_GNU_IFUNC
12858 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
))
12859 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_IRELATIVE
);
12862 outrel
.r_info
= ELF64_R_INFO (0, R_PPC64_RELATIVE
);
12864 /* We need to relocate .opd contents for ld.so.
12865 Prelink also wants simple and consistent rules
12866 for relocs. This make all RELATIVE relocs have
12867 *r_offset equal to r_addend. */
12876 ? h
->elf
.type
== STT_GNU_IFUNC
12877 : ELF_ST_TYPE (sym
->st_info
) == STT_GNU_IFUNC
)
12879 info
->callbacks
->einfo
12880 (_("%H: relocation %s for indirect "
12881 "function %s unsupported\n"),
12882 input_bfd
, input_section
, rel
->r_offset
,
12883 ppc64_elf_howto_table
[r_type
]->name
,
12887 else if (r_symndx
== STN_UNDEF
|| bfd_is_abs_section (sec
))
12889 else if (sec
== NULL
|| sec
->owner
== NULL
)
12891 bfd_set_error (bfd_error_bad_value
);
12898 osec
= sec
->output_section
;
12899 indx
= elf_section_data (osec
)->dynindx
;
12903 if ((osec
->flags
& SEC_READONLY
) == 0
12904 && htab
->elf
.data_index_section
!= NULL
)
12905 osec
= htab
->elf
.data_index_section
;
12907 osec
= htab
->elf
.text_index_section
;
12908 indx
= elf_section_data (osec
)->dynindx
;
12910 BFD_ASSERT (indx
!= 0);
12912 /* We are turning this relocation into one
12913 against a section symbol, so subtract out
12914 the output section's address but not the
12915 offset of the input section in the output
12917 outrel
.r_addend
-= osec
->vma
;
12920 outrel
.r_info
= ELF64_R_INFO (indx
, r_type
);
12924 sreloc
= elf_section_data (input_section
)->sreloc
;
12925 if (!htab
->elf
.dynamic_sections_created
)
12926 sreloc
= htab
->reliplt
;
12927 if (sreloc
== NULL
)
12930 if (sreloc
->reloc_count
* sizeof (Elf64_External_Rela
)
12933 loc
= sreloc
->contents
;
12934 loc
+= sreloc
->reloc_count
++ * sizeof (Elf64_External_Rela
);
12935 bfd_elf64_swap_reloca_out (output_bfd
, &outrel
, loc
);
12937 /* If this reloc is against an external symbol, it will
12938 be computed at runtime, so there's no need to do
12939 anything now. However, for the sake of prelink ensure
12940 that the section contents are a known value. */
12943 unresolved_reloc
= FALSE
;
12944 /* The value chosen here is quite arbitrary as ld.so
12945 ignores section contents except for the special
12946 case of .opd where the contents might be accessed
12947 before relocation. Choose zero, as that won't
12948 cause reloc overflow. */
12951 /* Use *r_offset == r_addend for R_PPC64_ADDR64 relocs
12952 to improve backward compatibility with older
12954 if (r_type
== R_PPC64_ADDR64
)
12955 addend
= outrel
.r_addend
;
12956 /* Adjust pc_relative relocs to have zero in *r_offset. */
12957 else if (ppc64_elf_howto_table
[r_type
]->pc_relative
)
12958 addend
= (input_section
->output_section
->vma
12959 + input_section
->output_offset
12966 case R_PPC64_GLOB_DAT
:
12967 case R_PPC64_JMP_SLOT
:
12968 case R_PPC64_JMP_IREL
:
12969 case R_PPC64_RELATIVE
:
12970 /* We shouldn't ever see these dynamic relocs in relocatable
12972 /* Fall through. */
12974 case R_PPC64_PLTGOT16
:
12975 case R_PPC64_PLTGOT16_DS
:
12976 case R_PPC64_PLTGOT16_HA
:
12977 case R_PPC64_PLTGOT16_HI
:
12978 case R_PPC64_PLTGOT16_LO
:
12979 case R_PPC64_PLTGOT16_LO_DS
:
12980 case R_PPC64_PLTREL32
:
12981 case R_PPC64_PLTREL64
:
12982 /* These ones haven't been implemented yet. */
12984 info
->callbacks
->einfo
12985 (_("%B: relocation %s is not supported for symbol %s\n"),
12987 ppc64_elf_howto_table
[r_type
]->name
, sym_name
);
12989 bfd_set_error (bfd_error_invalid_operation
);
12994 /* Multi-instruction sequences that access the TOC can be
12995 optimized, eg. addis ra,r2,0; addi rb,ra,x;
12996 to nop; addi rb,r2,x; */
13002 case R_PPC64_GOT_TLSLD16_HI
:
13003 case R_PPC64_GOT_TLSGD16_HI
:
13004 case R_PPC64_GOT_TPREL16_HI
:
13005 case R_PPC64_GOT_DTPREL16_HI
:
13006 case R_PPC64_GOT16_HI
:
13007 case R_PPC64_TOC16_HI
:
13008 /* These relocs would only be useful if building up an
13009 offset to later add to r2, perhaps in an indexed
13010 addressing mode instruction. Don't try to optimize.
13011 Unfortunately, the possibility of someone building up an
13012 offset like this or even with the HA relocs, means that
13013 we need to check the high insn when optimizing the low
13017 case R_PPC64_GOT_TLSLD16_HA
:
13018 case R_PPC64_GOT_TLSGD16_HA
:
13019 case R_PPC64_GOT_TPREL16_HA
:
13020 case R_PPC64_GOT_DTPREL16_HA
:
13021 case R_PPC64_GOT16_HA
:
13022 case R_PPC64_TOC16_HA
:
13023 /* nop is done later. */
13026 case R_PPC64_GOT_TLSLD16_LO
:
13027 case R_PPC64_GOT_TLSGD16_LO
:
13028 case R_PPC64_GOT_TPREL16_LO_DS
:
13029 case R_PPC64_GOT_DTPREL16_LO_DS
:
13030 case R_PPC64_GOT16_LO
:
13031 case R_PPC64_GOT16_LO_DS
:
13032 case R_PPC64_TOC16_LO
:
13033 case R_PPC64_TOC16_LO_DS
:
13034 if (htab
->do_toc_opt
&& relocation
+ addend
+ 0x8000 < 0x10000)
13036 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13037 insn
= bfd_get_32 (input_bfd
, p
);
13038 if ((insn
& (0x3f << 26)) == 14u << 26 /* addi */
13039 || (insn
& (0x3f << 26)) == 32u << 26 /* lwz */
13040 || (insn
& (0x3f << 26)) == 34u << 26 /* lbz */
13041 || (insn
& (0x3f << 26)) == 36u << 26 /* stw */
13042 || (insn
& (0x3f << 26)) == 38u << 26 /* stb */
13043 || (insn
& (0x3f << 26)) == 40u << 26 /* lhz */
13044 || (insn
& (0x3f << 26)) == 42u << 26 /* lha */
13045 || (insn
& (0x3f << 26)) == 44u << 26 /* sth */
13046 || (insn
& (0x3f << 26)) == 46u << 26 /* lmw */
13047 || (insn
& (0x3f << 26)) == 47u << 26 /* stmw */
13048 || (insn
& (0x3f << 26)) == 48u << 26 /* lfs */
13049 || (insn
& (0x3f << 26)) == 50u << 26 /* lfd */
13050 || (insn
& (0x3f << 26)) == 52u << 26 /* stfs */
13051 || (insn
& (0x3f << 26)) == 54u << 26 /* stfd */
13052 || ((insn
& (0x3f << 26)) == 58u << 26 /* lwa,ld,lmd */
13053 && (insn
& 3) != 1)
13054 || ((insn
& (0x3f << 26)) == 62u << 26 /* std, stmd */
13055 && ((insn
& 3) == 0 || (insn
& 3) == 3)))
13057 unsigned int reg
= (insn
>> 16) & 0x1f;
13058 const Elf_Internal_Rela
*ha
;
13059 bfd_boolean match_addend
;
13061 match_addend
= (sym
!= NULL
13062 && ELF_ST_TYPE (sym
->st_info
) == STT_SECTION
);
13063 ha
= ha_reloc_match (relocs
, rel
, ®
, match_addend
,
13064 input_bfd
, contents
);
13067 insn
&= ~(0x1f << 16);
13069 bfd_put_32 (input_bfd
, insn
, p
);
13070 if (ha_opt
== NULL
)
13072 ha_opt
= bfd_zmalloc (input_section
->reloc_count
);
13073 if (ha_opt
== NULL
)
13076 ha_opt
[ha
- relocs
] = 1;
13079 /* If we don't find a matching high part insn,
13080 something is fishy. Refuse to nop any high
13081 part insn in this section. */
13088 /* Do any further special processing. */
13094 case R_PPC64_ADDR16_HA
:
13095 case R_PPC64_REL16_HA
:
13096 case R_PPC64_ADDR16_HIGHERA
:
13097 case R_PPC64_ADDR16_HIGHESTA
:
13098 case R_PPC64_TOC16_HA
:
13099 case R_PPC64_SECTOFF_HA
:
13100 case R_PPC64_TPREL16_HA
:
13101 case R_PPC64_DTPREL16_HA
:
13102 case R_PPC64_TPREL16_HIGHER
:
13103 case R_PPC64_TPREL16_HIGHERA
:
13104 case R_PPC64_TPREL16_HIGHEST
:
13105 case R_PPC64_TPREL16_HIGHESTA
:
13106 case R_PPC64_DTPREL16_HIGHER
:
13107 case R_PPC64_DTPREL16_HIGHERA
:
13108 case R_PPC64_DTPREL16_HIGHEST
:
13109 case R_PPC64_DTPREL16_HIGHESTA
:
13110 /* It's just possible that this symbol is a weak symbol
13111 that's not actually defined anywhere. In that case,
13112 'sec' would be NULL, and we should leave the symbol
13113 alone (it will be set to zero elsewhere in the link). */
13118 case R_PPC64_GOT16_HA
:
13119 case R_PPC64_PLTGOT16_HA
:
13120 case R_PPC64_PLT16_HA
:
13121 case R_PPC64_GOT_TLSGD16_HA
:
13122 case R_PPC64_GOT_TLSLD16_HA
:
13123 case R_PPC64_GOT_TPREL16_HA
:
13124 case R_PPC64_GOT_DTPREL16_HA
:
13125 /* Add 0x10000 if sign bit in 0:15 is set.
13126 Bits 0:15 are not used. */
13130 case R_PPC64_ADDR16_DS
:
13131 case R_PPC64_ADDR16_LO_DS
:
13132 case R_PPC64_GOT16_DS
:
13133 case R_PPC64_GOT16_LO_DS
:
13134 case R_PPC64_PLT16_LO_DS
:
13135 case R_PPC64_SECTOFF_DS
:
13136 case R_PPC64_SECTOFF_LO_DS
:
13137 case R_PPC64_TOC16_DS
:
13138 case R_PPC64_TOC16_LO_DS
:
13139 case R_PPC64_PLTGOT16_DS
:
13140 case R_PPC64_PLTGOT16_LO_DS
:
13141 case R_PPC64_GOT_TPREL16_DS
:
13142 case R_PPC64_GOT_TPREL16_LO_DS
:
13143 case R_PPC64_GOT_DTPREL16_DS
:
13144 case R_PPC64_GOT_DTPREL16_LO_DS
:
13145 case R_PPC64_TPREL16_DS
:
13146 case R_PPC64_TPREL16_LO_DS
:
13147 case R_PPC64_DTPREL16_DS
:
13148 case R_PPC64_DTPREL16_LO_DS
:
13149 insn
= bfd_get_32 (input_bfd
, contents
+ (rel
->r_offset
& ~3));
13151 /* If this reloc is against an lq insn, then the value must be
13152 a multiple of 16. This is somewhat of a hack, but the
13153 "correct" way to do this by defining _DQ forms of all the
13154 _DS relocs bloats all reloc switches in this file. It
13155 doesn't seem to make much sense to use any of these relocs
13156 in data, so testing the insn should be safe. */
13157 if ((insn
& (0x3f << 26)) == (56u << 26))
13159 if (((relocation
+ addend
) & mask
) != 0)
13161 info
->callbacks
->einfo
13162 (_("%H: error: %s not a multiple of %u\n"),
13163 input_bfd
, input_section
, rel
->r_offset
,
13164 ppc64_elf_howto_table
[r_type
]->name
,
13166 bfd_set_error (bfd_error_bad_value
);
13173 /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
13174 because such sections are not SEC_ALLOC and thus ld.so will
13175 not process them. */
13176 if (unresolved_reloc
13177 && !((input_section
->flags
& SEC_DEBUGGING
) != 0
13178 && h
->elf
.def_dynamic
))
13180 info
->callbacks
->einfo
13181 (_("%H: unresolvable %s relocation against symbol `%s'\n"),
13182 input_bfd
, input_section
, rel
->r_offset
,
13183 ppc64_elf_howto_table
[(int) r_type
]->name
,
13184 h
->elf
.root
.root
.string
);
13188 r
= _bfd_final_link_relocate (ppc64_elf_howto_table
[(int) r_type
],
13196 if (r
!= bfd_reloc_ok
)
13198 if (sym_name
== NULL
)
13199 sym_name
= "(null)";
13200 if (r
== bfd_reloc_overflow
)
13205 && h
->elf
.root
.type
== bfd_link_hash_undefweak
13206 && ppc64_elf_howto_table
[r_type
]->pc_relative
)
13208 /* Assume this is a call protected by other code that
13209 detects the symbol is undefined. If this is the case,
13210 we can safely ignore the overflow. If not, the
13211 program is hosed anyway, and a little warning isn't
13217 if (!((*info
->callbacks
->reloc_overflow
)
13218 (info
, (h
? &h
->elf
.root
: NULL
), sym_name
,
13219 ppc64_elf_howto_table
[r_type
]->name
,
13220 orig_addend
, input_bfd
, input_section
, rel
->r_offset
)))
13225 info
->callbacks
->einfo
13226 (_("%H: %s reloc against `%s': error %d\n"),
13227 input_bfd
, input_section
, rel
->r_offset
,
13228 ppc64_elf_howto_table
[r_type
]->name
,
13236 if (ha_opt
!= NULL
)
13240 unsigned char *opt
= ha_opt
;
13242 relend
= relocs
+ input_section
->reloc_count
;
13243 for (; rel
< relend
; opt
++, rel
++)
13246 bfd_byte
*p
= contents
+ (rel
->r_offset
& ~3);
13247 bfd_put_32 (input_bfd
, NOP
, p
);
13253 /* If we're emitting relocations, then shortly after this function
13254 returns, reloc offsets and addends for this section will be
13255 adjusted. Worse, reloc symbol indices will be for the output
13256 file rather than the input. Save a copy of the relocs for
13257 opd_entry_value. */
13258 if (is_opd
&& (info
->emitrelocations
|| info
->relocatable
))
13261 amt
= input_section
->reloc_count
* sizeof (Elf_Internal_Rela
);
13262 rel
= bfd_alloc (input_bfd
, amt
);
13263 BFD_ASSERT (ppc64_elf_tdata (input_bfd
)->opd_relocs
== NULL
);
13264 ppc64_elf_tdata (input_bfd
)->opd_relocs
= rel
;
13267 memcpy (rel
, relocs
, amt
);
13272 /* Adjust the value of any local symbols in opd sections. */
13275 ppc64_elf_output_symbol_hook (struct bfd_link_info
*info
,
13276 const char *name ATTRIBUTE_UNUSED
,
13277 Elf_Internal_Sym
*elfsym
,
13278 asection
*input_sec
,
13279 struct elf_link_hash_entry
*h
)
13281 struct _opd_sec_data
*opd
;
13288 opd
= get_opd_info (input_sec
);
13289 if (opd
== NULL
|| opd
->adjust
== NULL
)
13292 value
= elfsym
->st_value
- input_sec
->output_offset
;
13293 if (!info
->relocatable
)
13294 value
-= input_sec
->output_section
->vma
;
13296 adjust
= opd
->adjust
[value
/ 8];
13300 elfsym
->st_value
+= adjust
;
13304 /* Finish up dynamic symbol handling. We set the contents of various
13305 dynamic sections here. */
13308 ppc64_elf_finish_dynamic_symbol (bfd
*output_bfd
,
13309 struct bfd_link_info
*info
,
13310 struct elf_link_hash_entry
*h
,
13311 Elf_Internal_Sym
*sym
)
13313 struct ppc_link_hash_table
*htab
;
13314 struct plt_entry
*ent
;
13315 Elf_Internal_Rela rela
;
13318 htab
= ppc_hash_table (info
);
13322 for (ent
= h
->plt
.plist
; ent
!= NULL
; ent
= ent
->next
)
13323 if (ent
->plt
.offset
!= (bfd_vma
) -1)
13325 /* This symbol has an entry in the procedure linkage
13326 table. Set it up. */
13327 if (!htab
->elf
.dynamic_sections_created
13328 || h
->dynindx
== -1)
13330 BFD_ASSERT (h
->type
== STT_GNU_IFUNC
13332 && (h
->root
.type
== bfd_link_hash_defined
13333 || h
->root
.type
== bfd_link_hash_defweak
));
13334 rela
.r_offset
= (htab
->iplt
->output_section
->vma
13335 + htab
->iplt
->output_offset
13336 + ent
->plt
.offset
);
13337 rela
.r_info
= ELF64_R_INFO (0, R_PPC64_JMP_IREL
);
13338 rela
.r_addend
= (h
->root
.u
.def
.value
13339 + h
->root
.u
.def
.section
->output_offset
13340 + h
->root
.u
.def
.section
->output_section
->vma
13342 loc
= (htab
->reliplt
->contents
13343 + (htab
->reliplt
->reloc_count
++
13344 * sizeof (Elf64_External_Rela
)));
13348 rela
.r_offset
= (htab
->plt
->output_section
->vma
13349 + htab
->plt
->output_offset
13350 + ent
->plt
.offset
);
13351 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_JMP_SLOT
);
13352 rela
.r_addend
= ent
->addend
;
13353 loc
= (htab
->relplt
->contents
13354 + ((ent
->plt
.offset
- PLT_INITIAL_ENTRY_SIZE
)
13355 / (PLT_ENTRY_SIZE
/ sizeof (Elf64_External_Rela
))));
13357 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13362 /* This symbol needs a copy reloc. Set it up. */
13364 if (h
->dynindx
== -1
13365 || (h
->root
.type
!= bfd_link_hash_defined
13366 && h
->root
.type
!= bfd_link_hash_defweak
)
13367 || htab
->relbss
== NULL
)
13370 rela
.r_offset
= (h
->root
.u
.def
.value
13371 + h
->root
.u
.def
.section
->output_section
->vma
13372 + h
->root
.u
.def
.section
->output_offset
);
13373 rela
.r_info
= ELF64_R_INFO (h
->dynindx
, R_PPC64_COPY
);
13375 loc
= htab
->relbss
->contents
;
13376 loc
+= htab
->relbss
->reloc_count
++ * sizeof (Elf64_External_Rela
);
13377 bfd_elf64_swap_reloca_out (output_bfd
, &rela
, loc
);
13380 /* Mark some specially defined symbols as absolute. */
13381 if (strcmp (h
->root
.root
.string
, "_DYNAMIC") == 0)
13382 sym
->st_shndx
= SHN_ABS
;
13387 /* Used to decide how to sort relocs in an optimal manner for the
13388 dynamic linker, before writing them out. */
13390 static enum elf_reloc_type_class
13391 ppc64_elf_reloc_type_class (const Elf_Internal_Rela
*rela
)
13393 enum elf_ppc64_reloc_type r_type
;
13395 r_type
= ELF64_R_TYPE (rela
->r_info
);
13398 case R_PPC64_RELATIVE
:
13399 return reloc_class_relative
;
13400 case R_PPC64_JMP_SLOT
:
13401 return reloc_class_plt
;
13403 return reloc_class_copy
;
13405 return reloc_class_normal
;
13409 /* Finish up the dynamic sections. */
13412 ppc64_elf_finish_dynamic_sections (bfd
*output_bfd
,
13413 struct bfd_link_info
*info
)
13415 struct ppc_link_hash_table
*htab
;
13419 htab
= ppc_hash_table (info
);
13423 dynobj
= htab
->elf
.dynobj
;
13424 sdyn
= bfd_get_section_by_name (dynobj
, ".dynamic");
13426 if (htab
->elf
.dynamic_sections_created
)
13428 Elf64_External_Dyn
*dyncon
, *dynconend
;
13430 if (sdyn
== NULL
|| htab
->got
== NULL
)
13433 dyncon
= (Elf64_External_Dyn
*) sdyn
->contents
;
13434 dynconend
= (Elf64_External_Dyn
*) (sdyn
->contents
+ sdyn
->size
);
13435 for (; dyncon
< dynconend
; dyncon
++)
13437 Elf_Internal_Dyn dyn
;
13440 bfd_elf64_swap_dyn_in (dynobj
, dyncon
, &dyn
);
13447 case DT_PPC64_GLINK
:
13449 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13450 /* We stupidly defined DT_PPC64_GLINK to be the start
13451 of glink rather than the first entry point, which is
13452 what ld.so needs, and now have a bigger stub to
13453 support automatic multiple TOCs. */
13454 dyn
.d_un
.d_ptr
+= GLINK_CALL_STUB_SIZE
- 32;
13458 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13461 dyn
.d_un
.d_ptr
= s
->vma
;
13464 case DT_PPC64_OPDSZ
:
13465 s
= bfd_get_section_by_name (output_bfd
, ".opd");
13468 dyn
.d_un
.d_val
= s
->size
;
13473 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13478 dyn
.d_un
.d_ptr
= s
->output_section
->vma
+ s
->output_offset
;
13482 dyn
.d_un
.d_val
= htab
->relplt
->size
;
13486 /* Don't count procedure linkage table relocs in the
13487 overall reloc count. */
13491 dyn
.d_un
.d_val
-= s
->size
;
13495 /* We may not be using the standard ELF linker script.
13496 If .rela.plt is the first .rela section, we adjust
13497 DT_RELA to not include it. */
13501 if (dyn
.d_un
.d_ptr
!= s
->output_section
->vma
+ s
->output_offset
)
13503 dyn
.d_un
.d_ptr
+= s
->size
;
13507 bfd_elf64_swap_dyn_out (output_bfd
, &dyn
, dyncon
);
13511 if (htab
->got
!= NULL
&& htab
->got
->size
!= 0)
13513 /* Fill in the first entry in the global offset table.
13514 We use it to hold the link-time TOCbase. */
13515 bfd_put_64 (output_bfd
,
13516 elf_gp (output_bfd
) + TOC_BASE_OFF
,
13517 htab
->got
->contents
);
13519 /* Set .got entry size. */
13520 elf_section_data (htab
->got
->output_section
)->this_hdr
.sh_entsize
= 8;
13523 if (htab
->plt
!= NULL
&& htab
->plt
->size
!= 0)
13525 /* Set .plt entry size. */
13526 elf_section_data (htab
->plt
->output_section
)->this_hdr
.sh_entsize
13530 /* brlt is SEC_LINKER_CREATED, so we need to write out relocs for
13531 brlt ourselves if emitrelocations. */
13532 if (htab
->brlt
!= NULL
13533 && htab
->brlt
->reloc_count
!= 0
13534 && !_bfd_elf_link_output_relocs (output_bfd
,
13536 elf_section_data (htab
->brlt
)->rela
.hdr
,
13537 elf_section_data (htab
->brlt
)->relocs
,
13541 if (htab
->glink
!= NULL
13542 && htab
->glink
->reloc_count
!= 0
13543 && !_bfd_elf_link_output_relocs (output_bfd
,
13545 elf_section_data (htab
->glink
)->rela
.hdr
,
13546 elf_section_data (htab
->glink
)->relocs
,
13550 /* We need to handle writing out multiple GOT sections ourselves,
13551 since we didn't add them to DYNOBJ. We know dynobj is the first
13553 while ((dynobj
= dynobj
->link_next
) != NULL
)
13557 if (!is_ppc64_elf (dynobj
))
13560 s
= ppc64_elf_tdata (dynobj
)->got
;
13563 && s
->output_section
!= bfd_abs_section_ptr
13564 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13565 s
->contents
, s
->output_offset
,
13568 s
= ppc64_elf_tdata (dynobj
)->relgot
;
13571 && s
->output_section
!= bfd_abs_section_ptr
13572 && !bfd_set_section_contents (output_bfd
, s
->output_section
,
13573 s
->contents
, s
->output_offset
,
13581 #include "elf64-target.h"